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linux/drivers/infiniband/hw/qib/qib_iba7322.c

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/*
* Copyright (c) 2012 Intel Corporation. All rights reserved.
* Copyright (c) 2008 - 2012 QLogic Corporation. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/*
* This file contains all of the code that is specific to the
* InfiniPath 7322 chip
*/
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/jiffies.h>
#include <linux/module.h>
#include <rdma/ib_verbs.h>
#include <rdma/ib_smi.h>
#ifdef CONFIG_INFINIBAND_QIB_DCA
#include <linux/dca.h>
#endif
#include "qib.h"
#include "qib_7322_regs.h"
#include "qib_qsfp.h"
#include "qib_mad.h"
#include "qib_verbs.h"
#undef pr_fmt
#define pr_fmt(fmt) QIB_DRV_NAME " " fmt
static void qib_setup_7322_setextled(struct qib_pportdata *, u32);
static void qib_7322_handle_hwerrors(struct qib_devdata *, char *, size_t);
static void sendctrl_7322_mod(struct qib_pportdata *ppd, u32 op);
static irqreturn_t qib_7322intr(int irq, void *data);
static irqreturn_t qib_7322bufavail(int irq, void *data);
static irqreturn_t sdma_intr(int irq, void *data);
static irqreturn_t sdma_idle_intr(int irq, void *data);
static irqreturn_t sdma_progress_intr(int irq, void *data);
static irqreturn_t sdma_cleanup_intr(int irq, void *data);
static void qib_7322_txchk_change(struct qib_devdata *, u32, u32, u32,
struct qib_ctxtdata *rcd);
static u8 qib_7322_phys_portstate(u64);
static u32 qib_7322_iblink_state(u64);
static void qib_set_ib_7322_lstate(struct qib_pportdata *ppd, u16 linkcmd,
u16 linitcmd);
static void force_h1(struct qib_pportdata *);
static void adj_tx_serdes(struct qib_pportdata *);
static u32 qib_7322_setpbc_control(struct qib_pportdata *, u32, u8, u8);
static void qib_7322_mini_pcs_reset(struct qib_pportdata *);
static u32 ahb_mod(struct qib_devdata *, int, int, int, u32, u32);
static void ibsd_wr_allchans(struct qib_pportdata *, int, unsigned, unsigned);
static void serdes_7322_los_enable(struct qib_pportdata *, int);
static int serdes_7322_init_old(struct qib_pportdata *);
static int serdes_7322_init_new(struct qib_pportdata *);
static void dump_sdma_7322_state(struct qib_pportdata *);
#define BMASK(msb, lsb) (((1 << ((msb) + 1 - (lsb))) - 1) << (lsb))
/* LE2 serdes values for different cases */
#define LE2_DEFAULT 5
#define LE2_5m 4
#define LE2_QME 0
/* Below is special-purpose, so only really works for the IB SerDes blocks. */
#define IBSD(hw_pidx) (hw_pidx + 2)
/* these are variables for documentation and experimentation purposes */
static const unsigned rcv_int_timeout = 375;
static const unsigned rcv_int_count = 16;
static const unsigned sdma_idle_cnt = 64;
/* Time to stop altering Rx Equalization parameters, after link up. */
#define RXEQ_DISABLE_MSECS 2500
/*
* Number of VLs we are configured to use (to allow for more
* credits per vl, etc.)
*/
ushort qib_num_cfg_vls = 2;
module_param_named(num_vls, qib_num_cfg_vls, ushort, S_IRUGO);
MODULE_PARM_DESC(num_vls, "Set number of Virtual Lanes to use (1-8)");
static ushort qib_chase = 1;
module_param_named(chase, qib_chase, ushort, S_IRUGO);
MODULE_PARM_DESC(chase, "Enable state chase handling");
static ushort qib_long_atten = 10; /* 10 dB ~= 5m length */
module_param_named(long_attenuation, qib_long_atten, ushort, S_IRUGO);
MODULE_PARM_DESC(long_attenuation,
"attenuation cutoff (dB) for long copper cable setup");
static ushort qib_singleport;
module_param_named(singleport, qib_singleport, ushort, S_IRUGO);
MODULE_PARM_DESC(singleport, "Use only IB port 1; more per-port buffer space");
static ushort qib_krcvq01_no_msi;
module_param_named(krcvq01_no_msi, qib_krcvq01_no_msi, ushort, S_IRUGO);
MODULE_PARM_DESC(krcvq01_no_msi, "No MSI for kctx < 2");
/*
* Receive header queue sizes
*/
static unsigned qib_rcvhdrcnt;
module_param_named(rcvhdrcnt, qib_rcvhdrcnt, uint, S_IRUGO);
MODULE_PARM_DESC(rcvhdrcnt, "receive header count");
static unsigned qib_rcvhdrsize;
module_param_named(rcvhdrsize, qib_rcvhdrsize, uint, S_IRUGO);
MODULE_PARM_DESC(rcvhdrsize, "receive header size in 32-bit words");
static unsigned qib_rcvhdrentsize;
module_param_named(rcvhdrentsize, qib_rcvhdrentsize, uint, S_IRUGO);
MODULE_PARM_DESC(rcvhdrentsize, "receive header entry size in 32-bit words");
#define MAX_ATTEN_LEN 64 /* plenty for any real system */
/* for read back, default index is ~5m copper cable */
static char txselect_list[MAX_ATTEN_LEN] = "10";
static struct kparam_string kp_txselect = {
.string = txselect_list,
.maxlen = MAX_ATTEN_LEN
};
static int setup_txselect(const char *, struct kernel_param *);
module_param_call(txselect, setup_txselect, param_get_string,
&kp_txselect, S_IWUSR | S_IRUGO);
MODULE_PARM_DESC(txselect,
"Tx serdes indices (for no QSFP or invalid QSFP data)");
#define BOARD_QME7342 5
#define BOARD_QMH7342 6
#define BOARD_QMH7360 9
#define IS_QMH(dd) (SYM_FIELD((dd)->revision, Revision, BoardID) == \
BOARD_QMH7342)
#define IS_QME(dd) (SYM_FIELD((dd)->revision, Revision, BoardID) == \
BOARD_QME7342)
#define KREG_IDX(regname) (QIB_7322_##regname##_OFFS / sizeof(u64))
#define KREG_IBPORT_IDX(regname) ((QIB_7322_##regname##_0_OFFS / sizeof(u64)))
#define MASK_ACROSS(lsb, msb) \
(((1ULL << ((msb) + 1 - (lsb))) - 1) << (lsb))
#define SYM_RMASK(regname, fldname) ((u64) \
QIB_7322_##regname##_##fldname##_RMASK)
#define SYM_MASK(regname, fldname) ((u64) \
QIB_7322_##regname##_##fldname##_RMASK << \
QIB_7322_##regname##_##fldname##_LSB)
#define SYM_FIELD(value, regname, fldname) ((u64) \
(((value) >> SYM_LSB(regname, fldname)) & \
SYM_RMASK(regname, fldname)))
/* useful for things like LaFifoEmpty_0...7, TxCreditOK_0...7, etc. */
#define SYM_FIELD_ACROSS(value, regname, fldname, nbits) \
(((value) >> SYM_LSB(regname, fldname)) & MASK_ACROSS(0, nbits))
#define HWE_MASK(fldname) SYM_MASK(HwErrMask, fldname##Mask)
#define ERR_MASK(fldname) SYM_MASK(ErrMask, fldname##Mask)
#define ERR_MASK_N(fldname) SYM_MASK(ErrMask_0, fldname##Mask)
#define INT_MASK(fldname) SYM_MASK(IntMask, fldname##IntMask)
#define INT_MASK_P(fldname, port) SYM_MASK(IntMask, fldname##IntMask##_##port)
/* Below because most, but not all, fields of IntMask have that full suffix */
#define INT_MASK_PM(fldname, port) SYM_MASK(IntMask, fldname##Mask##_##port)
#define SYM_LSB(regname, fldname) (QIB_7322_##regname##_##fldname##_LSB)
/*
* the size bits give us 2^N, in KB units. 0 marks as invalid,
* and 7 is reserved. We currently use only 2KB and 4KB
*/
#define IBA7322_TID_SZ_SHIFT QIB_7322_RcvTIDArray0_RT_BufSize_LSB
#define IBA7322_TID_SZ_2K (1UL<<IBA7322_TID_SZ_SHIFT) /* 2KB */
#define IBA7322_TID_SZ_4K (2UL<<IBA7322_TID_SZ_SHIFT) /* 4KB */
#define IBA7322_TID_PA_SHIFT 11U /* TID addr in chip stored w/o low bits */
#define SendIBSLIDAssignMask \
QIB_7322_SendIBSLIDAssign_0_SendIBSLIDAssign_15_0_RMASK
#define SendIBSLMCMask \
QIB_7322_SendIBSLIDMask_0_SendIBSLIDMask_15_0_RMASK
#define ExtLED_IB1_YEL SYM_MASK(EXTCtrl, LEDPort0YellowOn)
#define ExtLED_IB1_GRN SYM_MASK(EXTCtrl, LEDPort0GreenOn)
#define ExtLED_IB2_YEL SYM_MASK(EXTCtrl, LEDPort1YellowOn)
#define ExtLED_IB2_GRN SYM_MASK(EXTCtrl, LEDPort1GreenOn)
#define ExtLED_IB1_MASK (ExtLED_IB1_YEL | ExtLED_IB1_GRN)
#define ExtLED_IB2_MASK (ExtLED_IB2_YEL | ExtLED_IB2_GRN)
#define _QIB_GPIO_SDA_NUM 1
#define _QIB_GPIO_SCL_NUM 0
#define QIB_EEPROM_WEN_NUM 14
#define QIB_TWSI_EEPROM_DEV 0xA2 /* All Production 7322 cards. */
/* HW counter clock is at 4nsec */
#define QIB_7322_PSXMITWAIT_CHECK_RATE 4000
/* full speed IB port 1 only */
#define PORT_SPD_CAP (QIB_IB_SDR | QIB_IB_DDR | QIB_IB_QDR)
#define PORT_SPD_CAP_SHIFT 3
/* full speed featuremask, both ports */
#define DUAL_PORT_CAP (PORT_SPD_CAP | (PORT_SPD_CAP << PORT_SPD_CAP_SHIFT))
/*
* This file contains almost all the chip-specific register information and
* access functions for the FAKED QLogic InfiniPath 7322 PCI-Express chip.
*/
/* Use defines to tie machine-generated names to lower-case names */
#define kr_contextcnt KREG_IDX(ContextCnt)
#define kr_control KREG_IDX(Control)
#define kr_counterregbase KREG_IDX(CntrRegBase)
#define kr_errclear KREG_IDX(ErrClear)
#define kr_errmask KREG_IDX(ErrMask)
#define kr_errstatus KREG_IDX(ErrStatus)
#define kr_extctrl KREG_IDX(EXTCtrl)
#define kr_extstatus KREG_IDX(EXTStatus)
#define kr_gpio_clear KREG_IDX(GPIOClear)
#define kr_gpio_mask KREG_IDX(GPIOMask)
#define kr_gpio_out KREG_IDX(GPIOOut)
#define kr_gpio_status KREG_IDX(GPIOStatus)
#define kr_hwdiagctrl KREG_IDX(HwDiagCtrl)
#define kr_debugportval KREG_IDX(DebugPortValueReg)
#define kr_fmask KREG_IDX(feature_mask)
#define kr_act_fmask KREG_IDX(active_feature_mask)
#define kr_hwerrclear KREG_IDX(HwErrClear)
#define kr_hwerrmask KREG_IDX(HwErrMask)
#define kr_hwerrstatus KREG_IDX(HwErrStatus)
#define kr_intclear KREG_IDX(IntClear)
#define kr_intmask KREG_IDX(IntMask)
#define kr_intredirect KREG_IDX(IntRedirect0)
#define kr_intstatus KREG_IDX(IntStatus)
#define kr_pagealign KREG_IDX(PageAlign)
#define kr_rcvavailtimeout KREG_IDX(RcvAvailTimeOut0)
#define kr_rcvctrl KREG_IDX(RcvCtrl) /* Common, but chip also has per-port */
#define kr_rcvegrbase KREG_IDX(RcvEgrBase)
#define kr_rcvegrcnt KREG_IDX(RcvEgrCnt)
#define kr_rcvhdrcnt KREG_IDX(RcvHdrCnt)
#define kr_rcvhdrentsize KREG_IDX(RcvHdrEntSize)
#define kr_rcvhdrsize KREG_IDX(RcvHdrSize)
#define kr_rcvtidbase KREG_IDX(RcvTIDBase)
#define kr_rcvtidcnt KREG_IDX(RcvTIDCnt)
#define kr_revision KREG_IDX(Revision)
#define kr_scratch KREG_IDX(Scratch)
#define kr_sendbuffererror KREG_IDX(SendBufErr0) /* and base for 1 and 2 */
#define kr_sendcheckmask KREG_IDX(SendCheckMask0) /* and 1, 2 */
#define kr_sendctrl KREG_IDX(SendCtrl)
#define kr_sendgrhcheckmask KREG_IDX(SendGRHCheckMask0) /* and 1, 2 */
#define kr_sendibpktmask KREG_IDX(SendIBPacketMask0) /* and 1, 2 */
#define kr_sendpioavailaddr KREG_IDX(SendBufAvailAddr)
#define kr_sendpiobufbase KREG_IDX(SendBufBase)
#define kr_sendpiobufcnt KREG_IDX(SendBufCnt)
#define kr_sendpiosize KREG_IDX(SendBufSize)
#define kr_sendregbase KREG_IDX(SendRegBase)
#define kr_sendbufavail0 KREG_IDX(SendBufAvail0)
#define kr_userregbase KREG_IDX(UserRegBase)
#define kr_intgranted KREG_IDX(Int_Granted)
#define kr_vecclr_wo_int KREG_IDX(vec_clr_without_int)
#define kr_intblocked KREG_IDX(IntBlocked)
#define kr_r_access KREG_IDX(SPC_JTAG_ACCESS_REG)
/*
* per-port kernel registers. Access only with qib_read_kreg_port()
* or qib_write_kreg_port()
*/
#define krp_errclear KREG_IBPORT_IDX(ErrClear)
#define krp_errmask KREG_IBPORT_IDX(ErrMask)
#define krp_errstatus KREG_IBPORT_IDX(ErrStatus)
#define krp_highprio_0 KREG_IBPORT_IDX(HighPriority0)
#define krp_highprio_limit KREG_IBPORT_IDX(HighPriorityLimit)
#define krp_hrtbt_guid KREG_IBPORT_IDX(HRTBT_GUID)
#define krp_ib_pcsconfig KREG_IBPORT_IDX(IBPCSConfig)
#define krp_ibcctrl_a KREG_IBPORT_IDX(IBCCtrlA)
#define krp_ibcctrl_b KREG_IBPORT_IDX(IBCCtrlB)
#define krp_ibcctrl_c KREG_IBPORT_IDX(IBCCtrlC)
#define krp_ibcstatus_a KREG_IBPORT_IDX(IBCStatusA)
#define krp_ibcstatus_b KREG_IBPORT_IDX(IBCStatusB)
#define krp_txestatus KREG_IBPORT_IDX(TXEStatus)
#define krp_lowprio_0 KREG_IBPORT_IDX(LowPriority0)
#define krp_ncmodectrl KREG_IBPORT_IDX(IBNCModeCtrl)
#define krp_partitionkey KREG_IBPORT_IDX(RcvPartitionKey)
#define krp_psinterval KREG_IBPORT_IDX(PSInterval)
#define krp_psstart KREG_IBPORT_IDX(PSStart)
#define krp_psstat KREG_IBPORT_IDX(PSStat)
#define krp_rcvbthqp KREG_IBPORT_IDX(RcvBTHQP)
#define krp_rcvctrl KREG_IBPORT_IDX(RcvCtrl)
#define krp_rcvpktledcnt KREG_IBPORT_IDX(RcvPktLEDCnt)
#define krp_rcvqpmaptable KREG_IBPORT_IDX(RcvQPMapTableA)
#define krp_rxcreditvl0 KREG_IBPORT_IDX(RxCreditVL0)
#define krp_rxcreditvl15 (KREG_IBPORT_IDX(RxCreditVL0)+15)
#define krp_sendcheckcontrol KREG_IBPORT_IDX(SendCheckControl)
#define krp_sendctrl KREG_IBPORT_IDX(SendCtrl)
#define krp_senddmabase KREG_IBPORT_IDX(SendDmaBase)
#define krp_senddmabufmask0 KREG_IBPORT_IDX(SendDmaBufMask0)
#define krp_senddmabufmask1 (KREG_IBPORT_IDX(SendDmaBufMask0) + 1)
#define krp_senddmabufmask2 (KREG_IBPORT_IDX(SendDmaBufMask0) + 2)
#define krp_senddmabuf_use0 KREG_IBPORT_IDX(SendDmaBufUsed0)
#define krp_senddmabuf_use1 (KREG_IBPORT_IDX(SendDmaBufUsed0) + 1)
#define krp_senddmabuf_use2 (KREG_IBPORT_IDX(SendDmaBufUsed0) + 2)
#define krp_senddmadesccnt KREG_IBPORT_IDX(SendDmaDescCnt)
#define krp_senddmahead KREG_IBPORT_IDX(SendDmaHead)
#define krp_senddmaheadaddr KREG_IBPORT_IDX(SendDmaHeadAddr)
#define krp_senddmaidlecnt KREG_IBPORT_IDX(SendDmaIdleCnt)
#define krp_senddmalengen KREG_IBPORT_IDX(SendDmaLenGen)
#define krp_senddmaprioritythld KREG_IBPORT_IDX(SendDmaPriorityThld)
#define krp_senddmareloadcnt KREG_IBPORT_IDX(SendDmaReloadCnt)
#define krp_senddmastatus KREG_IBPORT_IDX(SendDmaStatus)
#define krp_senddmatail KREG_IBPORT_IDX(SendDmaTail)
#define krp_sendhdrsymptom KREG_IBPORT_IDX(SendHdrErrSymptom)
#define krp_sendslid KREG_IBPORT_IDX(SendIBSLIDAssign)
#define krp_sendslidmask KREG_IBPORT_IDX(SendIBSLIDMask)
#define krp_ibsdtestiftx KREG_IBPORT_IDX(IB_SDTEST_IF_TX)
#define krp_adapt_dis_timer KREG_IBPORT_IDX(ADAPT_DISABLE_TIMER_THRESHOLD)
#define krp_tx_deemph_override KREG_IBPORT_IDX(IBSD_TX_DEEMPHASIS_OVERRIDE)
#define krp_serdesctrl KREG_IBPORT_IDX(IBSerdesCtrl)
/*
* Per-context kernel registers. Access only with qib_read_kreg_ctxt()
* or qib_write_kreg_ctxt()
*/
#define krc_rcvhdraddr KREG_IDX(RcvHdrAddr0)
#define krc_rcvhdrtailaddr KREG_IDX(RcvHdrTailAddr0)
/*
* TID Flow table, per context. Reduces
* number of hdrq updates to one per flow (or on errors).
* context 0 and 1 share same memory, but have distinct
* addresses. Since for now, we never use expected sends
* on kernel contexts, we don't worry about that (we initialize
* those entries for ctxt 0/1 on driver load twice, for example).
*/
#define NUM_TIDFLOWS_CTXT 0x20 /* 0x20 per context; have to hardcode */
#define ur_rcvflowtable (KREG_IDX(RcvTIDFlowTable0) - KREG_IDX(RcvHdrTail0))
/* these are the error bits in the tid flows, and are W1C */
#define TIDFLOW_ERRBITS ( \
(SYM_MASK(RcvTIDFlowTable0, GenMismatch) << \
SYM_LSB(RcvTIDFlowTable0, GenMismatch)) | \
(SYM_MASK(RcvTIDFlowTable0, SeqMismatch) << \
SYM_LSB(RcvTIDFlowTable0, SeqMismatch)))
/* Most (not all) Counters are per-IBport.
* Requires LBIntCnt is at offset 0 in the group
*/
#define CREG_IDX(regname) \
((QIB_7322_##regname##_0_OFFS - QIB_7322_LBIntCnt_OFFS) / sizeof(u64))
#define crp_badformat CREG_IDX(RxVersionErrCnt)
#define crp_err_rlen CREG_IDX(RxLenErrCnt)
#define crp_erricrc CREG_IDX(RxICRCErrCnt)
#define crp_errlink CREG_IDX(RxLinkMalformCnt)
#define crp_errlpcrc CREG_IDX(RxLPCRCErrCnt)
#define crp_errpkey CREG_IDX(RxPKeyMismatchCnt)
#define crp_errvcrc CREG_IDX(RxVCRCErrCnt)
#define crp_excessbufferovfl CREG_IDX(ExcessBufferOvflCnt)
#define crp_iblinkdown CREG_IDX(IBLinkDownedCnt)
#define crp_iblinkerrrecov CREG_IDX(IBLinkErrRecoveryCnt)
#define crp_ibstatuschange CREG_IDX(IBStatusChangeCnt)
#define crp_ibsymbolerr CREG_IDX(IBSymbolErrCnt)
#define crp_invalidrlen CREG_IDX(RxMaxMinLenErrCnt)
#define crp_locallinkintegrityerr CREG_IDX(LocalLinkIntegrityErrCnt)
#define crp_pktrcv CREG_IDX(RxDataPktCnt)
#define crp_pktrcvflowctrl CREG_IDX(RxFlowPktCnt)
#define crp_pktsend CREG_IDX(TxDataPktCnt)
#define crp_pktsendflow CREG_IDX(TxFlowPktCnt)
#define crp_psrcvdatacount CREG_IDX(PSRcvDataCount)
#define crp_psrcvpktscount CREG_IDX(PSRcvPktsCount)
#define crp_psxmitdatacount CREG_IDX(PSXmitDataCount)
#define crp_psxmitpktscount CREG_IDX(PSXmitPktsCount)
#define crp_psxmitwaitcount CREG_IDX(PSXmitWaitCount)
#define crp_rcvebp CREG_IDX(RxEBPCnt)
#define crp_rcvflowctrlviol CREG_IDX(RxFlowCtrlViolCnt)
#define crp_rcvovfl CREG_IDX(RxBufOvflCnt)
#define crp_rxdlidfltr CREG_IDX(RxDlidFltrCnt)
#define crp_rxdroppkt CREG_IDX(RxDroppedPktCnt)
#define crp_rxotherlocalphyerr CREG_IDX(RxOtherLocalPhyErrCnt)
#define crp_rxqpinvalidctxt CREG_IDX(RxQPInvalidContextCnt)
#define crp_rxvlerr CREG_IDX(RxVlErrCnt)
#define crp_sendstall CREG_IDX(TxFlowStallCnt)
#define crp_txdroppedpkt CREG_IDX(TxDroppedPktCnt)
#define crp_txhdrerr CREG_IDX(TxHeadersErrCnt)
#define crp_txlenerr CREG_IDX(TxLenErrCnt)
#define crp_txminmaxlenerr CREG_IDX(TxMaxMinLenErrCnt)
#define crp_txsdmadesc CREG_IDX(TxSDmaDescCnt)
#define crp_txunderrun CREG_IDX(TxUnderrunCnt)
#define crp_txunsupvl CREG_IDX(TxUnsupVLErrCnt)
#define crp_vl15droppedpkt CREG_IDX(RxVL15DroppedPktCnt)
#define crp_wordrcv CREG_IDX(RxDwordCnt)
#define crp_wordsend CREG_IDX(TxDwordCnt)
#define crp_tx_creditstalls CREG_IDX(TxCreditUpToDateTimeOut)
/* these are the (few) counters that are not port-specific */
#define CREG_DEVIDX(regname) ((QIB_7322_##regname##_OFFS - \
QIB_7322_LBIntCnt_OFFS) / sizeof(u64))
#define cr_base_egrovfl CREG_DEVIDX(RxP0HdrEgrOvflCnt)
#define cr_lbint CREG_DEVIDX(LBIntCnt)
#define cr_lbstall CREG_DEVIDX(LBFlowStallCnt)
#define cr_pcieretrydiag CREG_DEVIDX(PcieRetryBufDiagQwordCnt)
#define cr_rxtidflowdrop CREG_DEVIDX(RxTidFlowDropCnt)
#define cr_tidfull CREG_DEVIDX(RxTIDFullErrCnt)
#define cr_tidinvalid CREG_DEVIDX(RxTIDValidErrCnt)
/* no chip register for # of IB ports supported, so define */
#define NUM_IB_PORTS 2
/* 1 VL15 buffer per hardware IB port, no register for this, so define */
#define NUM_VL15_BUFS NUM_IB_PORTS
/*
* context 0 and 1 are special, and there is no chip register that
* defines this value, so we have to define it here.
* These are all allocated to either 0 or 1 for single port
* hardware configuration, otherwise each gets half
*/
#define KCTXT0_EGRCNT 2048
/* values for vl and port fields in PBC, 7322-specific */
#define PBC_PORT_SEL_LSB 26
#define PBC_PORT_SEL_RMASK 1
#define PBC_VL_NUM_LSB 27
#define PBC_VL_NUM_RMASK 7
#define PBC_7322_VL15_SEND (1ULL << 63) /* pbc; VL15, no credit check */
#define PBC_7322_VL15_SEND_CTRL (1ULL << 31) /* control version of same */
static u8 ib_rate_to_delay[IB_RATE_120_GBPS + 1] = {
[IB_RATE_2_5_GBPS] = 16,
[IB_RATE_5_GBPS] = 8,
[IB_RATE_10_GBPS] = 4,
[IB_RATE_20_GBPS] = 2,
[IB_RATE_30_GBPS] = 2,
[IB_RATE_40_GBPS] = 1
};
#define IBA7322_LINKSPEED_SHIFT SYM_LSB(IBCStatusA_0, LinkSpeedActive)
#define IBA7322_LINKWIDTH_SHIFT SYM_LSB(IBCStatusA_0, LinkWidthActive)
/* link training states, from IBC */
#define IB_7322_LT_STATE_DISABLED 0x00
#define IB_7322_LT_STATE_LINKUP 0x01
#define IB_7322_LT_STATE_POLLACTIVE 0x02
#define IB_7322_LT_STATE_POLLQUIET 0x03
#define IB_7322_LT_STATE_SLEEPDELAY 0x04
#define IB_7322_LT_STATE_SLEEPQUIET 0x05
#define IB_7322_LT_STATE_CFGDEBOUNCE 0x08
#define IB_7322_LT_STATE_CFGRCVFCFG 0x09
#define IB_7322_LT_STATE_CFGWAITRMT 0x0a
#define IB_7322_LT_STATE_CFGIDLE 0x0b
#define IB_7322_LT_STATE_RECOVERRETRAIN 0x0c
#define IB_7322_LT_STATE_TXREVLANES 0x0d
#define IB_7322_LT_STATE_RECOVERWAITRMT 0x0e
#define IB_7322_LT_STATE_RECOVERIDLE 0x0f
#define IB_7322_LT_STATE_CFGENH 0x10
#define IB_7322_LT_STATE_CFGTEST 0x11
#define IB_7322_LT_STATE_CFGWAITRMTTEST 0x12
#define IB_7322_LT_STATE_CFGWAITENH 0x13
/* link state machine states from IBC */
#define IB_7322_L_STATE_DOWN 0x0
#define IB_7322_L_STATE_INIT 0x1
#define IB_7322_L_STATE_ARM 0x2
#define IB_7322_L_STATE_ACTIVE 0x3
#define IB_7322_L_STATE_ACT_DEFER 0x4
static const u8 qib_7322_physportstate[0x20] = {
[IB_7322_LT_STATE_DISABLED] = IB_PHYSPORTSTATE_DISABLED,
[IB_7322_LT_STATE_LINKUP] = IB_PHYSPORTSTATE_LINKUP,
[IB_7322_LT_STATE_POLLACTIVE] = IB_PHYSPORTSTATE_POLL,
[IB_7322_LT_STATE_POLLQUIET] = IB_PHYSPORTSTATE_POLL,
[IB_7322_LT_STATE_SLEEPDELAY] = IB_PHYSPORTSTATE_SLEEP,
[IB_7322_LT_STATE_SLEEPQUIET] = IB_PHYSPORTSTATE_SLEEP,
[IB_7322_LT_STATE_CFGDEBOUNCE] = IB_PHYSPORTSTATE_CFG_TRAIN,
[IB_7322_LT_STATE_CFGRCVFCFG] =
IB_PHYSPORTSTATE_CFG_TRAIN,
[IB_7322_LT_STATE_CFGWAITRMT] =
IB_PHYSPORTSTATE_CFG_TRAIN,
[IB_7322_LT_STATE_CFGIDLE] = IB_PHYSPORTSTATE_CFG_IDLE,
[IB_7322_LT_STATE_RECOVERRETRAIN] =
IB_PHYSPORTSTATE_LINK_ERR_RECOVER,
[IB_7322_LT_STATE_RECOVERWAITRMT] =
IB_PHYSPORTSTATE_LINK_ERR_RECOVER,
[IB_7322_LT_STATE_RECOVERIDLE] =
IB_PHYSPORTSTATE_LINK_ERR_RECOVER,
[IB_7322_LT_STATE_CFGENH] = IB_PHYSPORTSTATE_CFG_ENH,
[IB_7322_LT_STATE_CFGTEST] = IB_PHYSPORTSTATE_CFG_TRAIN,
[IB_7322_LT_STATE_CFGWAITRMTTEST] =
IB_PHYSPORTSTATE_CFG_TRAIN,
[IB_7322_LT_STATE_CFGWAITENH] =
IB_PHYSPORTSTATE_CFG_WAIT_ENH,
[0x14] = IB_PHYSPORTSTATE_CFG_TRAIN,
[0x15] = IB_PHYSPORTSTATE_CFG_TRAIN,
[0x16] = IB_PHYSPORTSTATE_CFG_TRAIN,
[0x17] = IB_PHYSPORTSTATE_CFG_TRAIN
};
#ifdef CONFIG_INFINIBAND_QIB_DCA
struct qib_irq_notify {
int rcv;
void *arg;
struct irq_affinity_notify notify;
};
#endif
struct qib_chip_specific {
u64 __iomem *cregbase;
u64 *cntrs;
spinlock_t rcvmod_lock; /* protect rcvctrl shadow changes */
spinlock_t gpio_lock; /* RMW of shadows/regs for ExtCtrl and GPIO */
u64 main_int_mask; /* clear bits which have dedicated handlers */
u64 int_enable_mask; /* for per port interrupts in single port mode */
u64 errormask;
u64 hwerrmask;
u64 gpio_out; /* shadow of kr_gpio_out, for rmw ops */
u64 gpio_mask; /* shadow the gpio mask register */
u64 extctrl; /* shadow the gpio output enable, etc... */
u32 ncntrs;
u32 nportcntrs;
u32 cntrnamelen;
u32 portcntrnamelen;
u32 numctxts;
u32 rcvegrcnt;
u32 updthresh; /* current AvailUpdThld */
u32 updthresh_dflt; /* default AvailUpdThld */
u32 r1;
int irq;
u32 num_msix_entries;
u32 sdmabufcnt;
u32 lastbuf_for_pio;
u32 stay_in_freeze;
u32 recovery_ports_initted;
#ifdef CONFIG_INFINIBAND_QIB_DCA
u32 dca_ctrl;
int rhdr_cpu[18];
int sdma_cpu[2];
u64 dca_rcvhdr_ctrl[5]; /* B, C, D, E, F */
#endif
struct qib_msix_entry *msix_entries;
unsigned long *sendchkenable;
unsigned long *sendgrhchk;
unsigned long *sendibchk;
u32 rcvavail_timeout[18];
char emsgbuf[128]; /* for device error interrupt msg buffer */
};
/* Table of entries in "human readable" form Tx Emphasis. */
struct txdds_ent {
u8 amp;
u8 pre;
u8 main;
u8 post;
};
struct vendor_txdds_ent {
u8 oui[QSFP_VOUI_LEN];
u8 *partnum;
struct txdds_ent sdr;
struct txdds_ent ddr;
struct txdds_ent qdr;
};
static void write_tx_serdes_param(struct qib_pportdata *, struct txdds_ent *);
#define TXDDS_TABLE_SZ 16 /* number of entries per speed in onchip table */
#define TXDDS_EXTRA_SZ 18 /* number of extra tx settings entries */
#define TXDDS_MFG_SZ 2 /* number of mfg tx settings entries */
#define SERDES_CHANS 4 /* yes, it's obvious, but one less magic number */
#define H1_FORCE_VAL 8
#define H1_FORCE_QME 1 /* may be overridden via setup_txselect() */
#define H1_FORCE_QMH 7 /* may be overridden via setup_txselect() */
/* The static and dynamic registers are paired, and the pairs indexed by spd */
#define krp_static_adapt_dis(spd) (KREG_IBPORT_IDX(ADAPT_DISABLE_STATIC_SDR) \
+ ((spd) * 2))
#define QDR_DFE_DISABLE_DELAY 4000 /* msec after LINKUP */
#define QDR_STATIC_ADAPT_DOWN 0xf0f0f0f0ULL /* link down, H1-H4 QDR adapts */
#define QDR_STATIC_ADAPT_DOWN_R1 0ULL /* r1 link down, H1-H4 QDR adapts */
#define QDR_STATIC_ADAPT_INIT 0xffffffffffULL /* up, disable H0,H1-8, LE */
#define QDR_STATIC_ADAPT_INIT_R1 0xf0ffffffffULL /* r1 up, disable H0,H1-8 */
struct qib_chippport_specific {
u64 __iomem *kpregbase;
u64 __iomem *cpregbase;
u64 *portcntrs;
struct qib_pportdata *ppd;
wait_queue_head_t autoneg_wait;
struct delayed_work autoneg_work;
struct delayed_work ipg_work;
struct timer_list chase_timer;
/*
* these 5 fields are used to establish deltas for IB symbol
* errors and linkrecovery errors. They can be reported on
* some chips during link negotiation prior to INIT, and with
* DDR when faking DDR negotiations with non-IBTA switches.
* The chip counters are adjusted at driver unload if there is
* a non-zero delta.
*/
u64 ibdeltainprog;
u64 ibsymdelta;
u64 ibsymsnap;
u64 iblnkerrdelta;
u64 iblnkerrsnap;
u64 iblnkdownsnap;
u64 iblnkdowndelta;
u64 ibmalfdelta;
u64 ibmalfsnap;
u64 ibcctrl_a; /* krp_ibcctrl_a shadow */
u64 ibcctrl_b; /* krp_ibcctrl_b shadow */
unsigned long qdr_dfe_time;
unsigned long chase_end;
u32 autoneg_tries;
u32 recovery_init;
u32 qdr_dfe_on;
u32 qdr_reforce;
/*
* Per-bay per-channel rcv QMH H1 values and Tx values for QDR.
* entry zero is unused, to simplify indexing
*/
u8 h1_val;
u8 no_eep; /* txselect table index to use if no qsfp info */
u8 ipg_tries;
u8 ibmalfusesnap;
struct qib_qsfp_data qsfp_data;
char epmsgbuf[192]; /* for port error interrupt msg buffer */
char sdmamsgbuf[192]; /* for per-port sdma error messages */
};
static struct {
const char *name;
irq_handler_t handler;
int lsb;
int port; /* 0 if not port-specific, else port # */
int dca;
} irq_table[] = {
{ "", qib_7322intr, -1, 0, 0 },
{ " (buf avail)", qib_7322bufavail,
SYM_LSB(IntStatus, SendBufAvail), 0, 0},
{ " (sdma 0)", sdma_intr,
SYM_LSB(IntStatus, SDmaInt_0), 1, 1 },
{ " (sdma 1)", sdma_intr,
SYM_LSB(IntStatus, SDmaInt_1), 2, 1 },
{ " (sdmaI 0)", sdma_idle_intr,
SYM_LSB(IntStatus, SDmaIdleInt_0), 1, 1},
{ " (sdmaI 1)", sdma_idle_intr,
SYM_LSB(IntStatus, SDmaIdleInt_1), 2, 1},
{ " (sdmaP 0)", sdma_progress_intr,
SYM_LSB(IntStatus, SDmaProgressInt_0), 1, 1 },
{ " (sdmaP 1)", sdma_progress_intr,
SYM_LSB(IntStatus, SDmaProgressInt_1), 2, 1 },
{ " (sdmaC 0)", sdma_cleanup_intr,
SYM_LSB(IntStatus, SDmaCleanupDone_0), 1, 0 },
{ " (sdmaC 1)", sdma_cleanup_intr,
SYM_LSB(IntStatus, SDmaCleanupDone_1), 2 , 0},
};
#ifdef CONFIG_INFINIBAND_QIB_DCA
static const struct dca_reg_map {
int shadow_inx;
int lsb;
u64 mask;
u16 regno;
} dca_rcvhdr_reg_map[] = {
{ 0, SYM_LSB(DCACtrlB, RcvHdrq0DCAOPH),
~SYM_MASK(DCACtrlB, RcvHdrq0DCAOPH) , KREG_IDX(DCACtrlB) },
{ 0, SYM_LSB(DCACtrlB, RcvHdrq1DCAOPH),
~SYM_MASK(DCACtrlB, RcvHdrq1DCAOPH) , KREG_IDX(DCACtrlB) },
{ 0, SYM_LSB(DCACtrlB, RcvHdrq2DCAOPH),
~SYM_MASK(DCACtrlB, RcvHdrq2DCAOPH) , KREG_IDX(DCACtrlB) },
{ 0, SYM_LSB(DCACtrlB, RcvHdrq3DCAOPH),
~SYM_MASK(DCACtrlB, RcvHdrq3DCAOPH) , KREG_IDX(DCACtrlB) },
{ 1, SYM_LSB(DCACtrlC, RcvHdrq4DCAOPH),
~SYM_MASK(DCACtrlC, RcvHdrq4DCAOPH) , KREG_IDX(DCACtrlC) },
{ 1, SYM_LSB(DCACtrlC, RcvHdrq5DCAOPH),
~SYM_MASK(DCACtrlC, RcvHdrq5DCAOPH) , KREG_IDX(DCACtrlC) },
{ 1, SYM_LSB(DCACtrlC, RcvHdrq6DCAOPH),
~SYM_MASK(DCACtrlC, RcvHdrq6DCAOPH) , KREG_IDX(DCACtrlC) },
{ 1, SYM_LSB(DCACtrlC, RcvHdrq7DCAOPH),
~SYM_MASK(DCACtrlC, RcvHdrq7DCAOPH) , KREG_IDX(DCACtrlC) },
{ 2, SYM_LSB(DCACtrlD, RcvHdrq8DCAOPH),
~SYM_MASK(DCACtrlD, RcvHdrq8DCAOPH) , KREG_IDX(DCACtrlD) },
{ 2, SYM_LSB(DCACtrlD, RcvHdrq9DCAOPH),
~SYM_MASK(DCACtrlD, RcvHdrq9DCAOPH) , KREG_IDX(DCACtrlD) },
{ 2, SYM_LSB(DCACtrlD, RcvHdrq10DCAOPH),
~SYM_MASK(DCACtrlD, RcvHdrq10DCAOPH) , KREG_IDX(DCACtrlD) },
{ 2, SYM_LSB(DCACtrlD, RcvHdrq11DCAOPH),
~SYM_MASK(DCACtrlD, RcvHdrq11DCAOPH) , KREG_IDX(DCACtrlD) },
{ 3, SYM_LSB(DCACtrlE, RcvHdrq12DCAOPH),
~SYM_MASK(DCACtrlE, RcvHdrq12DCAOPH) , KREG_IDX(DCACtrlE) },
{ 3, SYM_LSB(DCACtrlE, RcvHdrq13DCAOPH),
~SYM_MASK(DCACtrlE, RcvHdrq13DCAOPH) , KREG_IDX(DCACtrlE) },
{ 3, SYM_LSB(DCACtrlE, RcvHdrq14DCAOPH),
~SYM_MASK(DCACtrlE, RcvHdrq14DCAOPH) , KREG_IDX(DCACtrlE) },
{ 3, SYM_LSB(DCACtrlE, RcvHdrq15DCAOPH),
~SYM_MASK(DCACtrlE, RcvHdrq15DCAOPH) , KREG_IDX(DCACtrlE) },
{ 4, SYM_LSB(DCACtrlF, RcvHdrq16DCAOPH),
~SYM_MASK(DCACtrlF, RcvHdrq16DCAOPH) , KREG_IDX(DCACtrlF) },
{ 4, SYM_LSB(DCACtrlF, RcvHdrq17DCAOPH),
~SYM_MASK(DCACtrlF, RcvHdrq17DCAOPH) , KREG_IDX(DCACtrlF) },
};
#endif
/* ibcctrl bits */
#define QLOGIC_IB_IBCC_LINKINITCMD_DISABLE 1
/* cycle through TS1/TS2 till OK */
#define QLOGIC_IB_IBCC_LINKINITCMD_POLL 2
/* wait for TS1, then go on */
#define QLOGIC_IB_IBCC_LINKINITCMD_SLEEP 3
#define QLOGIC_IB_IBCC_LINKINITCMD_SHIFT 16
#define QLOGIC_IB_IBCC_LINKCMD_DOWN 1 /* move to 0x11 */
#define QLOGIC_IB_IBCC_LINKCMD_ARMED 2 /* move to 0x21 */
#define QLOGIC_IB_IBCC_LINKCMD_ACTIVE 3 /* move to 0x31 */
#define BLOB_7322_IBCHG 0x101
static inline void qib_write_kreg(const struct qib_devdata *dd,
const u32 regno, u64 value);
static inline u32 qib_read_kreg32(const struct qib_devdata *, const u32);
static void write_7322_initregs(struct qib_devdata *);
static void write_7322_init_portregs(struct qib_pportdata *);
static void setup_7322_link_recovery(struct qib_pportdata *, u32);
static void check_7322_rxe_status(struct qib_pportdata *);
static u32 __iomem *qib_7322_getsendbuf(struct qib_pportdata *, u64, u32 *);
#ifdef CONFIG_INFINIBAND_QIB_DCA
static void qib_setup_dca(struct qib_devdata *dd);
static void setup_dca_notifier(struct qib_devdata *dd,
struct qib_msix_entry *m);
static void reset_dca_notifier(struct qib_devdata *dd,
struct qib_msix_entry *m);
#endif
/**
* qib_read_ureg32 - read 32-bit virtualized per-context register
* @dd: device
* @regno: register number
* @ctxt: context number
*
* Return the contents of a register that is virtualized to be per context.
* Returns -1 on errors (not distinguishable from valid contents at
* runtime; we may add a separate error variable at some point).
*/
static inline u32 qib_read_ureg32(const struct qib_devdata *dd,
enum qib_ureg regno, int ctxt)
{
if (!dd->kregbase || !(dd->flags & QIB_PRESENT))
return 0;
return readl(regno + (u64 __iomem *)(
(dd->ureg_align * ctxt) + (dd->userbase ?
(char __iomem *)dd->userbase :
(char __iomem *)dd->kregbase + dd->uregbase)));
}
/**
* qib_read_ureg - read virtualized per-context register
* @dd: device
* @regno: register number
* @ctxt: context number
*
* Return the contents of a register that is virtualized to be per context.
* Returns -1 on errors (not distinguishable from valid contents at
* runtime; we may add a separate error variable at some point).
*/
static inline u64 qib_read_ureg(const struct qib_devdata *dd,
enum qib_ureg regno, int ctxt)
{
if (!dd->kregbase || !(dd->flags & QIB_PRESENT))
return 0;
return readq(regno + (u64 __iomem *)(
(dd->ureg_align * ctxt) + (dd->userbase ?
(char __iomem *)dd->userbase :
(char __iomem *)dd->kregbase + dd->uregbase)));
}
/**
* qib_write_ureg - write virtualized per-context register
* @dd: device
* @regno: register number
* @value: value
* @ctxt: context
*
* Write the contents of a register that is virtualized to be per context.
*/
static inline void qib_write_ureg(const struct qib_devdata *dd,
enum qib_ureg regno, u64 value, int ctxt)
{
u64 __iomem *ubase;
if (dd->userbase)
ubase = (u64 __iomem *)
((char __iomem *) dd->userbase +
dd->ureg_align * ctxt);
else
ubase = (u64 __iomem *)
(dd->uregbase +
(char __iomem *) dd->kregbase +
dd->ureg_align * ctxt);
if (dd->kregbase && (dd->flags & QIB_PRESENT))
writeq(value, &ubase[regno]);
}
static inline u32 qib_read_kreg32(const struct qib_devdata *dd,
const u32 regno)
{
if (!dd->kregbase || !(dd->flags & QIB_PRESENT))
return -1;
return readl((u32 __iomem *) &dd->kregbase[regno]);
}
static inline u64 qib_read_kreg64(const struct qib_devdata *dd,
const u32 regno)
{
if (!dd->kregbase || !(dd->flags & QIB_PRESENT))
return -1;
return readq(&dd->kregbase[regno]);
}
static inline void qib_write_kreg(const struct qib_devdata *dd,
const u32 regno, u64 value)
{
if (dd->kregbase && (dd->flags & QIB_PRESENT))
writeq(value, &dd->kregbase[regno]);
}
/*
* not many sanity checks for the port-specific kernel register routines,
* since they are only used when it's known to be safe.
*/
static inline u64 qib_read_kreg_port(const struct qib_pportdata *ppd,
const u16 regno)
{
if (!ppd->cpspec->kpregbase || !(ppd->dd->flags & QIB_PRESENT))
return 0ULL;
return readq(&ppd->cpspec->kpregbase[regno]);
}
static inline void qib_write_kreg_port(const struct qib_pportdata *ppd,
const u16 regno, u64 value)
{
if (ppd->cpspec && ppd->dd && ppd->cpspec->kpregbase &&
(ppd->dd->flags & QIB_PRESENT))
writeq(value, &ppd->cpspec->kpregbase[regno]);
}
/**
* qib_write_kreg_ctxt - write a device's per-ctxt 64-bit kernel register
* @dd: the qlogic_ib device
* @regno: the register number to write
* @ctxt: the context containing the register
* @value: the value to write
*/
static inline void qib_write_kreg_ctxt(const struct qib_devdata *dd,
const u16 regno, unsigned ctxt,
u64 value)
{
qib_write_kreg(dd, regno + ctxt, value);
}
static inline u64 read_7322_creg(const struct qib_devdata *dd, u16 regno)
{
if (!dd->cspec->cregbase || !(dd->flags & QIB_PRESENT))
return 0;
return readq(&dd->cspec->cregbase[regno]);
}
static inline u32 read_7322_creg32(const struct qib_devdata *dd, u16 regno)
{
if (!dd->cspec->cregbase || !(dd->flags & QIB_PRESENT))
return 0;
return readl(&dd->cspec->cregbase[regno]);
}
static inline void write_7322_creg_port(const struct qib_pportdata *ppd,
u16 regno, u64 value)
{
if (ppd->cpspec && ppd->cpspec->cpregbase &&
(ppd->dd->flags & QIB_PRESENT))
writeq(value, &ppd->cpspec->cpregbase[regno]);
}
static inline u64 read_7322_creg_port(const struct qib_pportdata *ppd,
u16 regno)
{
if (!ppd->cpspec || !ppd->cpspec->cpregbase ||
!(ppd->dd->flags & QIB_PRESENT))
return 0;
return readq(&ppd->cpspec->cpregbase[regno]);
}
static inline u32 read_7322_creg32_port(const struct qib_pportdata *ppd,
u16 regno)
{
if (!ppd->cpspec || !ppd->cpspec->cpregbase ||
!(ppd->dd->flags & QIB_PRESENT))
return 0;
return readl(&ppd->cpspec->cpregbase[regno]);
}
/* bits in Control register */
#define QLOGIC_IB_C_RESET SYM_MASK(Control, SyncReset)
#define QLOGIC_IB_C_SDMAFETCHPRIOEN SYM_MASK(Control, SDmaDescFetchPriorityEn)
/* bits in general interrupt regs */
#define QIB_I_RCVURG_LSB SYM_LSB(IntMask, RcvUrg0IntMask)
#define QIB_I_RCVURG_RMASK MASK_ACROSS(0, 17)
#define QIB_I_RCVURG_MASK (QIB_I_RCVURG_RMASK << QIB_I_RCVURG_LSB)
#define QIB_I_RCVAVAIL_LSB SYM_LSB(IntMask, RcvAvail0IntMask)
#define QIB_I_RCVAVAIL_RMASK MASK_ACROSS(0, 17)
#define QIB_I_RCVAVAIL_MASK (QIB_I_RCVAVAIL_RMASK << QIB_I_RCVAVAIL_LSB)
#define QIB_I_C_ERROR INT_MASK(Err)
#define QIB_I_SPIOSENT (INT_MASK_P(SendDone, 0) | INT_MASK_P(SendDone, 1))
#define QIB_I_SPIOBUFAVAIL INT_MASK(SendBufAvail)
#define QIB_I_GPIO INT_MASK(AssertGPIO)
#define QIB_I_P_SDMAINT(pidx) \
(INT_MASK_P(SDma, pidx) | INT_MASK_P(SDmaIdle, pidx) | \
INT_MASK_P(SDmaProgress, pidx) | \
INT_MASK_PM(SDmaCleanupDone, pidx))
/* Interrupt bits that are "per port" */
#define QIB_I_P_BITSEXTANT(pidx) \
(INT_MASK_P(Err, pidx) | INT_MASK_P(SendDone, pidx) | \
INT_MASK_P(SDma, pidx) | INT_MASK_P(SDmaIdle, pidx) | \
INT_MASK_P(SDmaProgress, pidx) | \
INT_MASK_PM(SDmaCleanupDone, pidx))
/* Interrupt bits that are common to a device */
/* currently unused: QIB_I_SPIOSENT */
#define QIB_I_C_BITSEXTANT \
(QIB_I_RCVURG_MASK | QIB_I_RCVAVAIL_MASK | \
QIB_I_SPIOSENT | \
QIB_I_C_ERROR | QIB_I_SPIOBUFAVAIL | QIB_I_GPIO)
#define QIB_I_BITSEXTANT (QIB_I_C_BITSEXTANT | \
QIB_I_P_BITSEXTANT(0) | QIB_I_P_BITSEXTANT(1))
/*
* Error bits that are "per port".
*/
#define QIB_E_P_IBSTATUSCHANGED ERR_MASK_N(IBStatusChanged)
#define QIB_E_P_SHDR ERR_MASK_N(SHeadersErr)
#define QIB_E_P_VL15_BUF_MISUSE ERR_MASK_N(VL15BufMisuseErr)
#define QIB_E_P_SND_BUF_MISUSE ERR_MASK_N(SendBufMisuseErr)
#define QIB_E_P_SUNSUPVL ERR_MASK_N(SendUnsupportedVLErr)
#define QIB_E_P_SUNEXP_PKTNUM ERR_MASK_N(SendUnexpectedPktNumErr)
#define QIB_E_P_SDROP_DATA ERR_MASK_N(SendDroppedDataPktErr)
#define QIB_E_P_SDROP_SMP ERR_MASK_N(SendDroppedSmpPktErr)
#define QIB_E_P_SPKTLEN ERR_MASK_N(SendPktLenErr)
#define QIB_E_P_SUNDERRUN ERR_MASK_N(SendUnderRunErr)
#define QIB_E_P_SMAXPKTLEN ERR_MASK_N(SendMaxPktLenErr)
#define QIB_E_P_SMINPKTLEN ERR_MASK_N(SendMinPktLenErr)
#define QIB_E_P_RIBLOSTLINK ERR_MASK_N(RcvIBLostLinkErr)
#define QIB_E_P_RHDR ERR_MASK_N(RcvHdrErr)
#define QIB_E_P_RHDRLEN ERR_MASK_N(RcvHdrLenErr)
#define QIB_E_P_RBADTID ERR_MASK_N(RcvBadTidErr)
#define QIB_E_P_RBADVERSION ERR_MASK_N(RcvBadVersionErr)
#define QIB_E_P_RIBFLOW ERR_MASK_N(RcvIBFlowErr)
#define QIB_E_P_REBP ERR_MASK_N(RcvEBPErr)
#define QIB_E_P_RUNSUPVL ERR_MASK_N(RcvUnsupportedVLErr)
#define QIB_E_P_RUNEXPCHAR ERR_MASK_N(RcvUnexpectedCharErr)
#define QIB_E_P_RSHORTPKTLEN ERR_MASK_N(RcvShortPktLenErr)
#define QIB_E_P_RLONGPKTLEN ERR_MASK_N(RcvLongPktLenErr)
#define QIB_E_P_RMAXPKTLEN ERR_MASK_N(RcvMaxPktLenErr)
#define QIB_E_P_RMINPKTLEN ERR_MASK_N(RcvMinPktLenErr)
#define QIB_E_P_RICRC ERR_MASK_N(RcvICRCErr)
#define QIB_E_P_RVCRC ERR_MASK_N(RcvVCRCErr)
#define QIB_E_P_RFORMATERR ERR_MASK_N(RcvFormatErr)
#define QIB_E_P_SDMA1STDESC ERR_MASK_N(SDma1stDescErr)
#define QIB_E_P_SDMABASE ERR_MASK_N(SDmaBaseErr)
#define QIB_E_P_SDMADESCADDRMISALIGN ERR_MASK_N(SDmaDescAddrMisalignErr)
#define QIB_E_P_SDMADWEN ERR_MASK_N(SDmaDwEnErr)
#define QIB_E_P_SDMAGENMISMATCH ERR_MASK_N(SDmaGenMismatchErr)
#define QIB_E_P_SDMAHALT ERR_MASK_N(SDmaHaltErr)
#define QIB_E_P_SDMAMISSINGDW ERR_MASK_N(SDmaMissingDwErr)
#define QIB_E_P_SDMAOUTOFBOUND ERR_MASK_N(SDmaOutOfBoundErr)
#define QIB_E_P_SDMARPYTAG ERR_MASK_N(SDmaRpyTagErr)
#define QIB_E_P_SDMATAILOUTOFBOUND ERR_MASK_N(SDmaTailOutOfBoundErr)
#define QIB_E_P_SDMAUNEXPDATA ERR_MASK_N(SDmaUnexpDataErr)
/* Error bits that are common to a device */
#define QIB_E_RESET ERR_MASK(ResetNegated)
#define QIB_E_HARDWARE ERR_MASK(HardwareErr)
#define QIB_E_INVALIDADDR ERR_MASK(InvalidAddrErr)
/*
* Per chip (rather than per-port) errors. Most either do
* nothing but trigger a print (because they self-recover, or
* always occur in tandem with other errors that handle the
* issue), or because they indicate errors with no recovery,
* but we want to know that they happened.
*/
#define QIB_E_SBUF_VL15_MISUSE ERR_MASK(SBufVL15MisUseErr)
#define QIB_E_BADEEP ERR_MASK(InvalidEEPCmd)
#define QIB_E_VLMISMATCH ERR_MASK(SendVLMismatchErr)
#define QIB_E_ARMLAUNCH ERR_MASK(SendArmLaunchErr)
#define QIB_E_SPCLTRIG ERR_MASK(SendSpecialTriggerErr)
#define QIB_E_RRCVHDRFULL ERR_MASK(RcvHdrFullErr)
#define QIB_E_RRCVEGRFULL ERR_MASK(RcvEgrFullErr)
#define QIB_E_RCVCTXTSHARE ERR_MASK(RcvContextShareErr)
/* SDMA chip errors (not per port)
* QIB_E_SDMA_BUF_DUP needs no special handling, because we will also get
* the SDMAHALT error immediately, so we just print the dup error via the
* E_AUTO mechanism. This is true of most of the per-port fatal errors
* as well, but since this is port-independent, by definition, it's
* handled a bit differently. SDMA_VL15 and SDMA_WRONG_PORT are per
* packet send errors, and so are handled in the same manner as other
* per-packet errors.
*/
#define QIB_E_SDMA_VL15 ERR_MASK(SDmaVL15Err)
#define QIB_E_SDMA_WRONG_PORT ERR_MASK(SDmaWrongPortErr)
#define QIB_E_SDMA_BUF_DUP ERR_MASK(SDmaBufMaskDuplicateErr)
/*
* Below functionally equivalent to legacy QLOGIC_IB_E_PKTERRS
* it is used to print "common" packet errors.
*/
#define QIB_E_P_PKTERRS (QIB_E_P_SPKTLEN |\
QIB_E_P_SDROP_DATA | QIB_E_P_RVCRC |\
QIB_E_P_RICRC | QIB_E_P_RSHORTPKTLEN |\
QIB_E_P_VL15_BUF_MISUSE | QIB_E_P_SHDR | \
QIB_E_P_REBP)
/* Error Bits that Packet-related (Receive, per-port) */
#define QIB_E_P_RPKTERRS (\
QIB_E_P_RHDRLEN | QIB_E_P_RBADTID | \
QIB_E_P_RBADVERSION | QIB_E_P_RHDR | \
QIB_E_P_RLONGPKTLEN | QIB_E_P_RSHORTPKTLEN |\
QIB_E_P_RMAXPKTLEN | QIB_E_P_RMINPKTLEN | \
QIB_E_P_RFORMATERR | QIB_E_P_RUNSUPVL | \
QIB_E_P_RUNEXPCHAR | QIB_E_P_RIBFLOW | QIB_E_P_REBP)
/*
* Error bits that are Send-related (per port)
* (ARMLAUNCH excluded from E_SPKTERRS because it gets special handling).
* All of these potentially need to have a buffer disarmed
*/
#define QIB_E_P_SPKTERRS (\
QIB_E_P_SUNEXP_PKTNUM |\
QIB_E_P_SDROP_DATA | QIB_E_P_SDROP_SMP |\
QIB_E_P_SMAXPKTLEN |\
QIB_E_P_VL15_BUF_MISUSE | QIB_E_P_SHDR | \
QIB_E_P_SMINPKTLEN | QIB_E_P_SPKTLEN | \
QIB_E_P_SND_BUF_MISUSE | QIB_E_P_SUNSUPVL)
#define QIB_E_SPKTERRS ( \
QIB_E_SBUF_VL15_MISUSE | QIB_E_VLMISMATCH | \
ERR_MASK_N(SendUnsupportedVLErr) | \
QIB_E_SPCLTRIG | QIB_E_SDMA_VL15 | QIB_E_SDMA_WRONG_PORT)
#define QIB_E_P_SDMAERRS ( \
QIB_E_P_SDMAHALT | \
QIB_E_P_SDMADESCADDRMISALIGN | \
QIB_E_P_SDMAUNEXPDATA | \
QIB_E_P_SDMAMISSINGDW | \
QIB_E_P_SDMADWEN | \
QIB_E_P_SDMARPYTAG | \
QIB_E_P_SDMA1STDESC | \
QIB_E_P_SDMABASE | \
QIB_E_P_SDMATAILOUTOFBOUND | \
QIB_E_P_SDMAOUTOFBOUND | \
QIB_E_P_SDMAGENMISMATCH)
/*
* This sets some bits more than once, but makes it more obvious which
* bits are not handled under other categories, and the repeat definition
* is not a problem.
*/
#define QIB_E_P_BITSEXTANT ( \
QIB_E_P_SPKTERRS | QIB_E_P_PKTERRS | QIB_E_P_RPKTERRS | \
QIB_E_P_RIBLOSTLINK | QIB_E_P_IBSTATUSCHANGED | \
QIB_E_P_SND_BUF_MISUSE | QIB_E_P_SUNDERRUN | \
QIB_E_P_SHDR | QIB_E_P_VL15_BUF_MISUSE | QIB_E_P_SDMAERRS \
)
/*
* These are errors that can occur when the link
* changes state while a packet is being sent or received. This doesn't
* cover things like EBP or VCRC that can be the result of a sending
* having the link change state, so we receive a "known bad" packet.
* All of these are "per port", so renamed:
*/
#define QIB_E_P_LINK_PKTERRS (\
QIB_E_P_SDROP_DATA | QIB_E_P_SDROP_SMP |\
QIB_E_P_SMINPKTLEN | QIB_E_P_SPKTLEN |\
QIB_E_P_RSHORTPKTLEN | QIB_E_P_RMINPKTLEN |\
QIB_E_P_RUNEXPCHAR)
/*
* This sets some bits more than once, but makes it more obvious which
* bits are not handled under other categories (such as QIB_E_SPKTERRS),
* and the repeat definition is not a problem.
*/
#define QIB_E_C_BITSEXTANT (\
QIB_E_HARDWARE | QIB_E_INVALIDADDR | QIB_E_BADEEP |\
QIB_E_ARMLAUNCH | QIB_E_VLMISMATCH | QIB_E_RRCVHDRFULL |\
QIB_E_RRCVEGRFULL | QIB_E_RESET | QIB_E_SBUF_VL15_MISUSE)
/* Likewise Neuter E_SPKT_ERRS_IGNORE */
#define E_SPKT_ERRS_IGNORE 0
#define QIB_EXTS_MEMBIST_DISABLED \
SYM_MASK(EXTStatus, MemBISTDisabled)
#define QIB_EXTS_MEMBIST_ENDTEST \
SYM_MASK(EXTStatus, MemBISTEndTest)
#define QIB_E_SPIOARMLAUNCH \
ERR_MASK(SendArmLaunchErr)
#define IBA7322_IBCC_LINKINITCMD_MASK SYM_RMASK(IBCCtrlA_0, LinkInitCmd)
#define IBA7322_IBCC_LINKCMD_SHIFT SYM_LSB(IBCCtrlA_0, LinkCmd)
/*
* IBTA_1_2 is set when multiple speeds are enabled (normal),
* and also if forced QDR (only QDR enabled). It's enabled for the
* forced QDR case so that scrambling will be enabled by the TS3
* exchange, when supported by both sides of the link.
*/
#define IBA7322_IBC_IBTA_1_2_MASK SYM_MASK(IBCCtrlB_0, IB_ENHANCED_MODE)
#define IBA7322_IBC_MAX_SPEED_MASK SYM_MASK(IBCCtrlB_0, SD_SPEED)
#define IBA7322_IBC_SPEED_QDR SYM_MASK(IBCCtrlB_0, SD_SPEED_QDR)
#define IBA7322_IBC_SPEED_DDR SYM_MASK(IBCCtrlB_0, SD_SPEED_DDR)
#define IBA7322_IBC_SPEED_SDR SYM_MASK(IBCCtrlB_0, SD_SPEED_SDR)
#define IBA7322_IBC_SPEED_MASK (SYM_MASK(IBCCtrlB_0, SD_SPEED_SDR) | \
SYM_MASK(IBCCtrlB_0, SD_SPEED_DDR) | SYM_MASK(IBCCtrlB_0, SD_SPEED_QDR))
#define IBA7322_IBC_SPEED_LSB SYM_LSB(IBCCtrlB_0, SD_SPEED_SDR)
#define IBA7322_LEDBLINK_OFF_SHIFT SYM_LSB(RcvPktLEDCnt_0, OFFperiod)
#define IBA7322_LEDBLINK_ON_SHIFT SYM_LSB(RcvPktLEDCnt_0, ONperiod)
#define IBA7322_IBC_WIDTH_AUTONEG SYM_MASK(IBCCtrlB_0, IB_NUM_CHANNELS)
#define IBA7322_IBC_WIDTH_4X_ONLY (1<<SYM_LSB(IBCCtrlB_0, IB_NUM_CHANNELS))
#define IBA7322_IBC_WIDTH_1X_ONLY (0<<SYM_LSB(IBCCtrlB_0, IB_NUM_CHANNELS))
#define IBA7322_IBC_RXPOL_MASK SYM_MASK(IBCCtrlB_0, IB_POLARITY_REV_SUPP)
#define IBA7322_IBC_RXPOL_LSB SYM_LSB(IBCCtrlB_0, IB_POLARITY_REV_SUPP)
#define IBA7322_IBC_HRTBT_MASK (SYM_MASK(IBCCtrlB_0, HRTBT_AUTO) | \
SYM_MASK(IBCCtrlB_0, HRTBT_ENB))
#define IBA7322_IBC_HRTBT_RMASK (IBA7322_IBC_HRTBT_MASK >> \
SYM_LSB(IBCCtrlB_0, HRTBT_ENB))
#define IBA7322_IBC_HRTBT_LSB SYM_LSB(IBCCtrlB_0, HRTBT_ENB)
#define IBA7322_REDIRECT_VEC_PER_REG 12
#define IBA7322_SENDCHK_PKEY SYM_MASK(SendCheckControl_0, PKey_En)
#define IBA7322_SENDCHK_BTHQP SYM_MASK(SendCheckControl_0, BTHQP_En)
#define IBA7322_SENDCHK_SLID SYM_MASK(SendCheckControl_0, SLID_En)
#define IBA7322_SENDCHK_RAW_IPV6 SYM_MASK(SendCheckControl_0, RawIPV6_En)
#define IBA7322_SENDCHK_MINSZ SYM_MASK(SendCheckControl_0, PacketTooSmall_En)
#define AUTONEG_TRIES 3 /* sequential retries to negotiate DDR */
#define HWE_AUTO(fldname) { .mask = SYM_MASK(HwErrMask, fldname##Mask), \
.msg = #fldname , .sz = sizeof(#fldname) }
#define HWE_AUTO_P(fldname, port) { .mask = SYM_MASK(HwErrMask, \
fldname##Mask##_##port), .msg = #fldname , .sz = sizeof(#fldname) }
static const struct qib_hwerror_msgs qib_7322_hwerror_msgs[] = {
HWE_AUTO_P(IBSerdesPClkNotDetect, 1),
HWE_AUTO_P(IBSerdesPClkNotDetect, 0),
HWE_AUTO(PCIESerdesPClkNotDetect),
HWE_AUTO(PowerOnBISTFailed),
HWE_AUTO(TempsenseTholdReached),
HWE_AUTO(MemoryErr),
HWE_AUTO(PCIeBusParityErr),
HWE_AUTO(PcieCplTimeout),
HWE_AUTO(PciePoisonedTLP),
HWE_AUTO_P(SDmaMemReadErr, 1),
HWE_AUTO_P(SDmaMemReadErr, 0),
HWE_AUTO_P(IBCBusFromSPCParityErr, 1),
HWE_AUTO_P(IBCBusToSPCParityErr, 1),
HWE_AUTO_P(IBCBusFromSPCParityErr, 0),
HWE_AUTO(statusValidNoEop),
HWE_AUTO(LATriggered),
{ .mask = 0, .sz = 0 }
};
#define E_AUTO(fldname) { .mask = SYM_MASK(ErrMask, fldname##Mask), \
.msg = #fldname, .sz = sizeof(#fldname) }
#define E_P_AUTO(fldname) { .mask = SYM_MASK(ErrMask_0, fldname##Mask), \
.msg = #fldname, .sz = sizeof(#fldname) }
static const struct qib_hwerror_msgs qib_7322error_msgs[] = {
E_AUTO(RcvEgrFullErr),
E_AUTO(RcvHdrFullErr),
E_AUTO(ResetNegated),
E_AUTO(HardwareErr),
E_AUTO(InvalidAddrErr),
E_AUTO(SDmaVL15Err),
E_AUTO(SBufVL15MisUseErr),
E_AUTO(InvalidEEPCmd),
E_AUTO(RcvContextShareErr),
E_AUTO(SendVLMismatchErr),
E_AUTO(SendArmLaunchErr),
E_AUTO(SendSpecialTriggerErr),
E_AUTO(SDmaWrongPortErr),
E_AUTO(SDmaBufMaskDuplicateErr),
{ .mask = 0, .sz = 0 }
};
static const struct qib_hwerror_msgs qib_7322p_error_msgs[] = {
E_P_AUTO(IBStatusChanged),
E_P_AUTO(SHeadersErr),
E_P_AUTO(VL15BufMisuseErr),
/*
* SDmaHaltErr is not really an error, make it clearer;
*/
{.mask = SYM_MASK(ErrMask_0, SDmaHaltErrMask), .msg = "SDmaHalted",
.sz = 11},
E_P_AUTO(SDmaDescAddrMisalignErr),
E_P_AUTO(SDmaUnexpDataErr),
E_P_AUTO(SDmaMissingDwErr),
E_P_AUTO(SDmaDwEnErr),
E_P_AUTO(SDmaRpyTagErr),
E_P_AUTO(SDma1stDescErr),
E_P_AUTO(SDmaBaseErr),
E_P_AUTO(SDmaTailOutOfBoundErr),
E_P_AUTO(SDmaOutOfBoundErr),
E_P_AUTO(SDmaGenMismatchErr),
E_P_AUTO(SendBufMisuseErr),
E_P_AUTO(SendUnsupportedVLErr),
E_P_AUTO(SendUnexpectedPktNumErr),
E_P_AUTO(SendDroppedDataPktErr),
E_P_AUTO(SendDroppedSmpPktErr),
E_P_AUTO(SendPktLenErr),
E_P_AUTO(SendUnderRunErr),
E_P_AUTO(SendMaxPktLenErr),
E_P_AUTO(SendMinPktLenErr),
E_P_AUTO(RcvIBLostLinkErr),
E_P_AUTO(RcvHdrErr),
E_P_AUTO(RcvHdrLenErr),
E_P_AUTO(RcvBadTidErr),
E_P_AUTO(RcvBadVersionErr),
E_P_AUTO(RcvIBFlowErr),
E_P_AUTO(RcvEBPErr),
E_P_AUTO(RcvUnsupportedVLErr),
E_P_AUTO(RcvUnexpectedCharErr),
E_P_AUTO(RcvShortPktLenErr),
E_P_AUTO(RcvLongPktLenErr),
E_P_AUTO(RcvMaxPktLenErr),
E_P_AUTO(RcvMinPktLenErr),
E_P_AUTO(RcvICRCErr),
E_P_AUTO(RcvVCRCErr),
E_P_AUTO(RcvFormatErr),
{ .mask = 0, .sz = 0 }
};
/*
* Below generates "auto-message" for interrupts not specific to any port or
* context
*/
#define INTR_AUTO(fldname) { .mask = SYM_MASK(IntMask, fldname##Mask), \
.msg = #fldname, .sz = sizeof(#fldname) }
/* Below generates "auto-message" for interrupts specific to a port */
#define INTR_AUTO_P(fldname) { .mask = MASK_ACROSS(\
SYM_LSB(IntMask, fldname##Mask##_0), \
SYM_LSB(IntMask, fldname##Mask##_1)), \
.msg = #fldname "_P", .sz = sizeof(#fldname "_P") }
/* For some reason, the SerDesTrimDone bits are reversed */
#define INTR_AUTO_PI(fldname) { .mask = MASK_ACROSS(\
SYM_LSB(IntMask, fldname##Mask##_1), \
SYM_LSB(IntMask, fldname##Mask##_0)), \
.msg = #fldname "_P", .sz = sizeof(#fldname "_P") }
/*
* Below generates "auto-message" for interrupts specific to a context,
* with ctxt-number appended
*/
#define INTR_AUTO_C(fldname) { .mask = MASK_ACROSS(\
SYM_LSB(IntMask, fldname##0IntMask), \
SYM_LSB(IntMask, fldname##17IntMask)), \
.msg = #fldname "_C", .sz = sizeof(#fldname "_C") }
static const struct qib_hwerror_msgs qib_7322_intr_msgs[] = {
INTR_AUTO_P(SDmaInt),
INTR_AUTO_P(SDmaProgressInt),
INTR_AUTO_P(SDmaIdleInt),
INTR_AUTO_P(SDmaCleanupDone),
INTR_AUTO_C(RcvUrg),
INTR_AUTO_P(ErrInt),
INTR_AUTO(ErrInt), /* non-port-specific errs */
INTR_AUTO(AssertGPIOInt),
INTR_AUTO_P(SendDoneInt),
INTR_AUTO(SendBufAvailInt),
INTR_AUTO_C(RcvAvail),
{ .mask = 0, .sz = 0 }
};
#define TXSYMPTOM_AUTO_P(fldname) \
{ .mask = SYM_MASK(SendHdrErrSymptom_0, fldname), \
.msg = #fldname, .sz = sizeof(#fldname) }
static const struct qib_hwerror_msgs hdrchk_msgs[] = {
TXSYMPTOM_AUTO_P(NonKeyPacket),
TXSYMPTOM_AUTO_P(GRHFail),
TXSYMPTOM_AUTO_P(PkeyFail),
TXSYMPTOM_AUTO_P(QPFail),
TXSYMPTOM_AUTO_P(SLIDFail),
TXSYMPTOM_AUTO_P(RawIPV6),
TXSYMPTOM_AUTO_P(PacketTooSmall),
{ .mask = 0, .sz = 0 }
};
#define IBA7322_HDRHEAD_PKTINT_SHIFT 32 /* interrupt cnt in upper 32 bits */
/*
* Called when we might have an error that is specific to a particular
* PIO buffer, and may need to cancel that buffer, so it can be re-used,
* because we don't need to force the update of pioavail
*/
static void qib_disarm_7322_senderrbufs(struct qib_pportdata *ppd)
{
struct qib_devdata *dd = ppd->dd;
u32 i;
int any;
u32 piobcnt = dd->piobcnt2k + dd->piobcnt4k + NUM_VL15_BUFS;
u32 regcnt = (piobcnt + BITS_PER_LONG - 1) / BITS_PER_LONG;
unsigned long sbuf[4];
/*
* It's possible that sendbuffererror could have bits set; might
* have already done this as a result of hardware error handling.
*/
any = 0;
for (i = 0; i < regcnt; ++i) {
sbuf[i] = qib_read_kreg64(dd, kr_sendbuffererror + i);
if (sbuf[i]) {
any = 1;
qib_write_kreg(dd, kr_sendbuffererror + i, sbuf[i]);
}
}
if (any)
qib_disarm_piobufs_set(dd, sbuf, piobcnt);
}
/* No txe_recover yet, if ever */
/* No decode__errors yet */
static void err_decode(char *msg, size_t len, u64 errs,
const struct qib_hwerror_msgs *msp)
{
u64 these, lmask;
int took, multi, n = 0;
while (errs && msp && msp->mask) {
multi = (msp->mask & (msp->mask - 1));
while (errs & msp->mask) {
these = (errs & msp->mask);
lmask = (these & (these - 1)) ^ these;
if (len) {
if (n++) {
/* separate the strings */
*msg++ = ',';
len--;
}
BUG_ON(!msp->sz);
/* msp->sz counts the nul */
took = min_t(size_t, msp->sz - (size_t)1, len);
memcpy(msg, msp->msg, took);
len -= took;
msg += took;
if (len)
*msg = '\0';
}
errs &= ~lmask;
if (len && multi) {
/* More than one bit this mask */
int idx = -1;
while (lmask & msp->mask) {
++idx;
lmask >>= 1;
}
took = scnprintf(msg, len, "_%d", idx);
len -= took;
msg += took;
}
}
++msp;
}
/* If some bits are left, show in hex. */
if (len && errs)
snprintf(msg, len, "%sMORE:%llX", n ? "," : "",
(unsigned long long) errs);
}
/* only called if r1 set */
static void flush_fifo(struct qib_pportdata *ppd)
{
struct qib_devdata *dd = ppd->dd;
u32 __iomem *piobuf;
u32 bufn;
u32 *hdr;
u64 pbc;
const unsigned hdrwords = 7;
static struct qib_ib_header ibhdr = {
.lrh[0] = cpu_to_be16(0xF000 | QIB_LRH_BTH),
.lrh[1] = IB_LID_PERMISSIVE,
.lrh[2] = cpu_to_be16(hdrwords + SIZE_OF_CRC),
.lrh[3] = IB_LID_PERMISSIVE,
.u.oth.bth[0] = cpu_to_be32(
(IB_OPCODE_UD_SEND_ONLY << 24) | QIB_DEFAULT_P_KEY),
.u.oth.bth[1] = cpu_to_be32(0),
.u.oth.bth[2] = cpu_to_be32(0),
.u.oth.u.ud.deth[0] = cpu_to_be32(0),
.u.oth.u.ud.deth[1] = cpu_to_be32(0),
};
/*
* Send a dummy VL15 packet to flush the launch FIFO.
* This will not actually be sent since the TxeBypassIbc bit is set.
*/
pbc = PBC_7322_VL15_SEND |
(((u64)ppd->hw_pidx) << (PBC_PORT_SEL_LSB + 32)) |
(hdrwords + SIZE_OF_CRC);
piobuf = qib_7322_getsendbuf(ppd, pbc, &bufn);
if (!piobuf)
return;
writeq(pbc, piobuf);
hdr = (u32 *) &ibhdr;
if (dd->flags & QIB_PIO_FLUSH_WC) {
qib_flush_wc();
qib_pio_copy(piobuf + 2, hdr, hdrwords - 1);
qib_flush_wc();
__raw_writel(hdr[hdrwords - 1], piobuf + hdrwords + 1);
qib_flush_wc();
} else
qib_pio_copy(piobuf + 2, hdr, hdrwords);
qib_sendbuf_done(dd, bufn);
}
/*
* This is called with interrupts disabled and sdma_lock held.
*/
static void qib_7322_sdma_sendctrl(struct qib_pportdata *ppd, unsigned op)
{
struct qib_devdata *dd = ppd->dd;
u64 set_sendctrl = 0;
u64 clr_sendctrl = 0;
if (op & QIB_SDMA_SENDCTRL_OP_ENABLE)
set_sendctrl |= SYM_MASK(SendCtrl_0, SDmaEnable);
else
clr_sendctrl |= SYM_MASK(SendCtrl_0, SDmaEnable);
if (op & QIB_SDMA_SENDCTRL_OP_INTENABLE)
set_sendctrl |= SYM_MASK(SendCtrl_0, SDmaIntEnable);
else
clr_sendctrl |= SYM_MASK(SendCtrl_0, SDmaIntEnable);
if (op & QIB_SDMA_SENDCTRL_OP_HALT)
set_sendctrl |= SYM_MASK(SendCtrl_0, SDmaHalt);
else
clr_sendctrl |= SYM_MASK(SendCtrl_0, SDmaHalt);
if (op & QIB_SDMA_SENDCTRL_OP_DRAIN)
set_sendctrl |= SYM_MASK(SendCtrl_0, TxeBypassIbc) |
SYM_MASK(SendCtrl_0, TxeAbortIbc) |
SYM_MASK(SendCtrl_0, TxeDrainRmFifo);
else
clr_sendctrl |= SYM_MASK(SendCtrl_0, TxeBypassIbc) |
SYM_MASK(SendCtrl_0, TxeAbortIbc) |
SYM_MASK(SendCtrl_0, TxeDrainRmFifo);
spin_lock(&dd->sendctrl_lock);
/* If we are draining everything, block sends first */
if (op & QIB_SDMA_SENDCTRL_OP_DRAIN) {
ppd->p_sendctrl &= ~SYM_MASK(SendCtrl_0, SendEnable);
qib_write_kreg_port(ppd, krp_sendctrl, ppd->p_sendctrl);
qib_write_kreg(dd, kr_scratch, 0);
}
ppd->p_sendctrl |= set_sendctrl;
ppd->p_sendctrl &= ~clr_sendctrl;
if (op & QIB_SDMA_SENDCTRL_OP_CLEANUP)
qib_write_kreg_port(ppd, krp_sendctrl,
ppd->p_sendctrl |
SYM_MASK(SendCtrl_0, SDmaCleanup));
else
qib_write_kreg_port(ppd, krp_sendctrl, ppd->p_sendctrl);
qib_write_kreg(dd, kr_scratch, 0);
if (op & QIB_SDMA_SENDCTRL_OP_DRAIN) {
ppd->p_sendctrl |= SYM_MASK(SendCtrl_0, SendEnable);
qib_write_kreg_port(ppd, krp_sendctrl, ppd->p_sendctrl);
qib_write_kreg(dd, kr_scratch, 0);
}
spin_unlock(&dd->sendctrl_lock);
if ((op & QIB_SDMA_SENDCTRL_OP_DRAIN) && ppd->dd->cspec->r1)
flush_fifo(ppd);
}
static void qib_7322_sdma_hw_clean_up(struct qib_pportdata *ppd)
{
__qib_sdma_process_event(ppd, qib_sdma_event_e50_hw_cleaned);
}
static void qib_sdma_7322_setlengen(struct qib_pportdata *ppd)
{
/*
* Set SendDmaLenGen and clear and set
* the MSB of the generation count to enable generation checking
* and load the internal generation counter.
*/
qib_write_kreg_port(ppd, krp_senddmalengen, ppd->sdma_descq_cnt);
qib_write_kreg_port(ppd, krp_senddmalengen,
ppd->sdma_descq_cnt |
(1ULL << QIB_7322_SendDmaLenGen_0_Generation_MSB));
}
/*
* Must be called with sdma_lock held, or before init finished.
*/
static void qib_sdma_update_7322_tail(struct qib_pportdata *ppd, u16 tail)
{
/* Commit writes to memory and advance the tail on the chip */
wmb();
ppd->sdma_descq_tail = tail;
qib_write_kreg_port(ppd, krp_senddmatail, tail);
}
/*
* This is called with interrupts disabled and sdma_lock held.
*/
static void qib_7322_sdma_hw_start_up(struct qib_pportdata *ppd)
{
/*
* Drain all FIFOs.
* The hardware doesn't require this but we do it so that verbs
* and user applications don't wait for link active to send stale
* data.
*/
sendctrl_7322_mod(ppd, QIB_SENDCTRL_FLUSH);
qib_sdma_7322_setlengen(ppd);
qib_sdma_update_7322_tail(ppd, 0); /* Set SendDmaTail */
ppd->sdma_head_dma[0] = 0;
qib_7322_sdma_sendctrl(ppd,
ppd->sdma_state.current_op | QIB_SDMA_SENDCTRL_OP_CLEANUP);
}
#define DISABLES_SDMA ( \
QIB_E_P_SDMAHALT | \
QIB_E_P_SDMADESCADDRMISALIGN | \
QIB_E_P_SDMAMISSINGDW | \
QIB_E_P_SDMADWEN | \
QIB_E_P_SDMARPYTAG | \
QIB_E_P_SDMA1STDESC | \
QIB_E_P_SDMABASE | \
QIB_E_P_SDMATAILOUTOFBOUND | \
QIB_E_P_SDMAOUTOFBOUND | \
QIB_E_P_SDMAGENMISMATCH)
static void sdma_7322_p_errors(struct qib_pportdata *ppd, u64 errs)
{
unsigned long flags;
struct qib_devdata *dd = ppd->dd;
errs &= QIB_E_P_SDMAERRS;
err_decode(ppd->cpspec->sdmamsgbuf, sizeof(ppd->cpspec->sdmamsgbuf),
errs, qib_7322p_error_msgs);
if (errs & QIB_E_P_SDMAUNEXPDATA)
qib_dev_err(dd, "IB%u:%u SDmaUnexpData\n", dd->unit,
ppd->port);
spin_lock_irqsave(&ppd->sdma_lock, flags);
if (errs != QIB_E_P_SDMAHALT) {
/* SDMA errors have QIB_E_P_SDMAHALT and another bit set */
qib_dev_porterr(dd, ppd->port,
"SDMA %s 0x%016llx %s\n",
qib_sdma_state_names[ppd->sdma_state.current_state],
errs, ppd->cpspec->sdmamsgbuf);
dump_sdma_7322_state(ppd);
}
switch (ppd->sdma_state.current_state) {
case qib_sdma_state_s00_hw_down:
break;
case qib_sdma_state_s10_hw_start_up_wait:
if (errs & QIB_E_P_SDMAHALT)
__qib_sdma_process_event(ppd,
qib_sdma_event_e20_hw_started);
break;
case qib_sdma_state_s20_idle:
break;
case qib_sdma_state_s30_sw_clean_up_wait:
break;
case qib_sdma_state_s40_hw_clean_up_wait:
if (errs & QIB_E_P_SDMAHALT)
__qib_sdma_process_event(ppd,
qib_sdma_event_e50_hw_cleaned);
break;
case qib_sdma_state_s50_hw_halt_wait:
if (errs & QIB_E_P_SDMAHALT)
__qib_sdma_process_event(ppd,
qib_sdma_event_e60_hw_halted);
break;
case qib_sdma_state_s99_running:
__qib_sdma_process_event(ppd, qib_sdma_event_e7322_err_halted);
__qib_sdma_process_event(ppd, qib_sdma_event_e60_hw_halted);
break;
}
spin_unlock_irqrestore(&ppd->sdma_lock, flags);
}
/*
* handle per-device errors (not per-port errors)
*/
static noinline void handle_7322_errors(struct qib_devdata *dd)
{
char *msg;
u64 iserr = 0;
u64 errs;
u64 mask;
int log_idx;
qib_stats.sps_errints++;
errs = qib_read_kreg64(dd, kr_errstatus);
if (!errs) {
qib_devinfo(dd->pcidev,
"device error interrupt, but no error bits set!\n");
goto done;
}
/* don't report errors that are masked */
errs &= dd->cspec->errormask;
msg = dd->cspec->emsgbuf;
/* do these first, they are most important */
if (errs & QIB_E_HARDWARE) {
*msg = '\0';
qib_7322_handle_hwerrors(dd, msg, sizeof(dd->cspec->emsgbuf));
} else
for (log_idx = 0; log_idx < QIB_EEP_LOG_CNT; ++log_idx)
if (errs & dd->eep_st_masks[log_idx].errs_to_log)
qib_inc_eeprom_err(dd, log_idx, 1);
if (errs & QIB_E_SPKTERRS) {
qib_disarm_7322_senderrbufs(dd->pport);
qib_stats.sps_txerrs++;
} else if (errs & QIB_E_INVALIDADDR)
qib_stats.sps_txerrs++;
else if (errs & QIB_E_ARMLAUNCH) {
qib_stats.sps_txerrs++;
qib_disarm_7322_senderrbufs(dd->pport);
}
qib_write_kreg(dd, kr_errclear, errs);
/*
* The ones we mask off are handled specially below
* or above. Also mask SDMADISABLED by default as it
* is too chatty.
*/
mask = QIB_E_HARDWARE;
*msg = '\0';
err_decode(msg, sizeof(dd->cspec->emsgbuf), errs & ~mask,
qib_7322error_msgs);
/*
* Getting reset is a tragedy for all ports. Mark the device
* _and_ the ports as "offline" in way meaningful to each.
*/
if (errs & QIB_E_RESET) {
int pidx;
qib_dev_err(dd,
"Got reset, requires re-init (unload and reload driver)\n");
dd->flags &= ~QIB_INITTED; /* needs re-init */
/* mark as having had error */
*dd->devstatusp |= QIB_STATUS_HWERROR;
for (pidx = 0; pidx < dd->num_pports; ++pidx)
if (dd->pport[pidx].link_speed_supported)
*dd->pport[pidx].statusp &= ~QIB_STATUS_IB_CONF;
}
if (*msg && iserr)
qib_dev_err(dd, "%s error\n", msg);
/*
* If there were hdrq or egrfull errors, wake up any processes
* waiting in poll. We used to try to check which contexts had
* the overflow, but given the cost of that and the chip reads
* to support it, it's better to just wake everybody up if we
* get an overflow; waiters can poll again if it's not them.
*/
if (errs & (ERR_MASK(RcvEgrFullErr) | ERR_MASK(RcvHdrFullErr))) {
qib_handle_urcv(dd, ~0U);
if (errs & ERR_MASK(RcvEgrFullErr))
qib_stats.sps_buffull++;
else
qib_stats.sps_hdrfull++;
}
done:
return;
}
static void qib_error_tasklet(unsigned long data)
{
struct qib_devdata *dd = (struct qib_devdata *)data;
handle_7322_errors(dd);
qib_write_kreg(dd, kr_errmask, dd->cspec->errormask);
}
static void reenable_chase(unsigned long opaque)
{
struct qib_pportdata *ppd = (struct qib_pportdata *)opaque;
ppd->cpspec->chase_timer.expires = 0;
qib_set_ib_7322_lstate(ppd, QLOGIC_IB_IBCC_LINKCMD_DOWN,
QLOGIC_IB_IBCC_LINKINITCMD_POLL);
}
static void disable_chase(struct qib_pportdata *ppd, unsigned long tnow,
u8 ibclt)
{
ppd->cpspec->chase_end = 0;
if (!qib_chase)
return;
qib_set_ib_7322_lstate(ppd, QLOGIC_IB_IBCC_LINKCMD_DOWN,
QLOGIC_IB_IBCC_LINKINITCMD_DISABLE);
ppd->cpspec->chase_timer.expires = jiffies + QIB_CHASE_DIS_TIME;
add_timer(&ppd->cpspec->chase_timer);
}
static void handle_serdes_issues(struct qib_pportdata *ppd, u64 ibcst)
{
u8 ibclt;
unsigned long tnow;
ibclt = (u8)SYM_FIELD(ibcst, IBCStatusA_0, LinkTrainingState);
/*
* Detect and handle the state chase issue, where we can
* get stuck if we are unlucky on timing on both sides of
* the link. If we are, we disable, set a timer, and
* then re-enable.
*/
switch (ibclt) {
case IB_7322_LT_STATE_CFGRCVFCFG:
case IB_7322_LT_STATE_CFGWAITRMT:
case IB_7322_LT_STATE_TXREVLANES:
case IB_7322_LT_STATE_CFGENH:
tnow = jiffies;
if (ppd->cpspec->chase_end &&
time_after(tnow, ppd->cpspec->chase_end))
disable_chase(ppd, tnow, ibclt);
else if (!ppd->cpspec->chase_end)
ppd->cpspec->chase_end = tnow + QIB_CHASE_TIME;
break;
default:
ppd->cpspec->chase_end = 0;
break;
}
if (((ibclt >= IB_7322_LT_STATE_CFGTEST &&
ibclt <= IB_7322_LT_STATE_CFGWAITENH) ||
ibclt == IB_7322_LT_STATE_LINKUP) &&
(ibcst & SYM_MASK(IBCStatusA_0, LinkSpeedQDR))) {
force_h1(ppd);
ppd->cpspec->qdr_reforce = 1;
if (!ppd->dd->cspec->r1)
serdes_7322_los_enable(ppd, 0);
} else if (ppd->cpspec->qdr_reforce &&
(ibcst & SYM_MASK(IBCStatusA_0, LinkSpeedQDR)) &&
(ibclt == IB_7322_LT_STATE_CFGENH ||
ibclt == IB_7322_LT_STATE_CFGIDLE ||
ibclt == IB_7322_LT_STATE_LINKUP))
force_h1(ppd);
if ((IS_QMH(ppd->dd) || IS_QME(ppd->dd)) &&
ppd->link_speed_enabled == QIB_IB_QDR &&
(ibclt == IB_7322_LT_STATE_CFGTEST ||
ibclt == IB_7322_LT_STATE_CFGENH ||
(ibclt >= IB_7322_LT_STATE_POLLACTIVE &&
ibclt <= IB_7322_LT_STATE_SLEEPQUIET)))
adj_tx_serdes(ppd);
if (ibclt != IB_7322_LT_STATE_LINKUP) {
u8 ltstate = qib_7322_phys_portstate(ibcst);
u8 pibclt = (u8)SYM_FIELD(ppd->lastibcstat, IBCStatusA_0,
LinkTrainingState);
if (!ppd->dd->cspec->r1 &&
pibclt == IB_7322_LT_STATE_LINKUP &&
ltstate != IB_PHYSPORTSTATE_LINK_ERR_RECOVER &&
ltstate != IB_PHYSPORTSTATE_RECOVERY_RETRAIN &&
ltstate != IB_PHYSPORTSTATE_RECOVERY_WAITRMT &&
ltstate != IB_PHYSPORTSTATE_RECOVERY_IDLE)
/* If the link went down (but no into recovery,
* turn LOS back on */
serdes_7322_los_enable(ppd, 1);
if (!ppd->cpspec->qdr_dfe_on &&
ibclt <= IB_7322_LT_STATE_SLEEPQUIET) {
ppd->cpspec->qdr_dfe_on = 1;
ppd->cpspec->qdr_dfe_time = 0;
/* On link down, reenable QDR adaptation */
qib_write_kreg_port(ppd, krp_static_adapt_dis(2),
ppd->dd->cspec->r1 ?
QDR_STATIC_ADAPT_DOWN_R1 :
QDR_STATIC_ADAPT_DOWN);
pr_info(
"IB%u:%u re-enabled QDR adaptation ibclt %x\n",
ppd->dd->unit, ppd->port, ibclt);
}
}
}
static int qib_7322_set_ib_cfg(struct qib_pportdata *, int, u32);
/*
* This is per-pport error handling.
* will likely get it's own MSIx interrupt (one for each port,
* although just a single handler).
*/
static noinline void handle_7322_p_errors(struct qib_pportdata *ppd)
{
char *msg;
u64 ignore_this_time = 0, iserr = 0, errs, fmask;
struct qib_devdata *dd = ppd->dd;
/* do this as soon as possible */
fmask = qib_read_kreg64(dd, kr_act_fmask);
if (!fmask)
check_7322_rxe_status(ppd);
errs = qib_read_kreg_port(ppd, krp_errstatus);
if (!errs)
qib_devinfo(dd->pcidev,
"Port%d error interrupt, but no error bits set!\n",
ppd->port);
if (!fmask)
errs &= ~QIB_E_P_IBSTATUSCHANGED;
if (!errs)
goto done;
msg = ppd->cpspec->epmsgbuf;
*msg = '\0';
if (errs & ~QIB_E_P_BITSEXTANT) {
err_decode(msg, sizeof(ppd->cpspec->epmsgbuf),
errs & ~QIB_E_P_BITSEXTANT, qib_7322p_error_msgs);
if (!*msg)
snprintf(msg, sizeof(ppd->cpspec->epmsgbuf),
"no others");
qib_dev_porterr(dd, ppd->port,
"error interrupt with unknown errors 0x%016Lx set (and %s)\n",
(errs & ~QIB_E_P_BITSEXTANT), msg);
*msg = '\0';
}
if (errs & QIB_E_P_SHDR) {
u64 symptom;
/* determine cause, then write to clear */
symptom = qib_read_kreg_port(ppd, krp_sendhdrsymptom);
qib_write_kreg_port(ppd, krp_sendhdrsymptom, 0);
err_decode(msg, sizeof(ppd->cpspec->epmsgbuf), symptom,
hdrchk_msgs);
*msg = '\0';
/* senderrbuf cleared in SPKTERRS below */
}
if (errs & QIB_E_P_SPKTERRS) {
if ((errs & QIB_E_P_LINK_PKTERRS) &&
!(ppd->lflags & QIBL_LINKACTIVE)) {
/*
* This can happen when trying to bring the link
* up, but the IB link changes state at the "wrong"
* time. The IB logic then complains that the packet
* isn't valid. We don't want to confuse people, so
* we just don't print them, except at debug
*/
err_decode(msg, sizeof(ppd->cpspec->epmsgbuf),
(errs & QIB_E_P_LINK_PKTERRS),
qib_7322p_error_msgs);
*msg = '\0';
ignore_this_time = errs & QIB_E_P_LINK_PKTERRS;
}
qib_disarm_7322_senderrbufs(ppd);
} else if ((errs & QIB_E_P_LINK_PKTERRS) &&
!(ppd->lflags & QIBL_LINKACTIVE)) {
/*
* This can happen when SMA is trying to bring the link
* up, but the IB link changes state at the "wrong" time.
* The IB logic then complains that the packet isn't
* valid. We don't want to confuse people, so we just
* don't print them, except at debug
*/
err_decode(msg, sizeof(ppd->cpspec->epmsgbuf), errs,
qib_7322p_error_msgs);
ignore_this_time = errs & QIB_E_P_LINK_PKTERRS;
*msg = '\0';
}
qib_write_kreg_port(ppd, krp_errclear, errs);
errs &= ~ignore_this_time;
if (!errs)
goto done;
if (errs & QIB_E_P_RPKTERRS)
qib_stats.sps_rcverrs++;
if (errs & QIB_E_P_SPKTERRS)
qib_stats.sps_txerrs++;
iserr = errs & ~(QIB_E_P_RPKTERRS | QIB_E_P_PKTERRS);
if (errs & QIB_E_P_SDMAERRS)
sdma_7322_p_errors(ppd, errs);
if (errs & QIB_E_P_IBSTATUSCHANGED) {
u64 ibcs;
u8 ltstate;
ibcs = qib_read_kreg_port(ppd, krp_ibcstatus_a);
ltstate = qib_7322_phys_portstate(ibcs);
if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG))
handle_serdes_issues(ppd, ibcs);
if (!(ppd->cpspec->ibcctrl_a &
SYM_MASK(IBCCtrlA_0, IBStatIntReductionEn))) {
/*
* We got our interrupt, so init code should be
* happy and not try alternatives. Now squelch
* other "chatter" from link-negotiation (pre Init)
*/
ppd->cpspec->ibcctrl_a |=
SYM_MASK(IBCCtrlA_0, IBStatIntReductionEn);
qib_write_kreg_port(ppd, krp_ibcctrl_a,
ppd->cpspec->ibcctrl_a);
}
/* Update our picture of width and speed from chip */
ppd->link_width_active =
(ibcs & SYM_MASK(IBCStatusA_0, LinkWidthActive)) ?
IB_WIDTH_4X : IB_WIDTH_1X;
ppd->link_speed_active = (ibcs & SYM_MASK(IBCStatusA_0,
LinkSpeedQDR)) ? QIB_IB_QDR : (ibcs &
SYM_MASK(IBCStatusA_0, LinkSpeedActive)) ?
QIB_IB_DDR : QIB_IB_SDR;
if ((ppd->lflags & QIBL_IB_LINK_DISABLED) && ltstate !=
IB_PHYSPORTSTATE_DISABLED)
qib_set_ib_7322_lstate(ppd, 0,
QLOGIC_IB_IBCC_LINKINITCMD_DISABLE);
else
/*
* Since going into a recovery state causes the link
* state to go down and since recovery is transitory,
* it is better if we "miss" ever seeing the link
* training state go into recovery (i.e., ignore this
* transition for link state special handling purposes)
* without updating lastibcstat.
*/
if (ltstate != IB_PHYSPORTSTATE_LINK_ERR_RECOVER &&
ltstate != IB_PHYSPORTSTATE_RECOVERY_RETRAIN &&
ltstate != IB_PHYSPORTSTATE_RECOVERY_WAITRMT &&
ltstate != IB_PHYSPORTSTATE_RECOVERY_IDLE)
qib_handle_e_ibstatuschanged(ppd, ibcs);
}
if (*msg && iserr)
qib_dev_porterr(dd, ppd->port, "%s error\n", msg);
if (ppd->state_wanted & ppd->lflags)
wake_up_interruptible(&ppd->state_wait);
done:
return;
}
/* enable/disable chip from delivering interrupts */
static void qib_7322_set_intr_state(struct qib_devdata *dd, u32 enable)
{
if (enable) {
if (dd->flags & QIB_BADINTR)
return;
qib_write_kreg(dd, kr_intmask, dd->cspec->int_enable_mask);
/* cause any pending enabled interrupts to be re-delivered */
qib_write_kreg(dd, kr_intclear, 0ULL);
if (dd->cspec->num_msix_entries) {
/* and same for MSIx */
u64 val = qib_read_kreg64(dd, kr_intgranted);
if (val)
qib_write_kreg(dd, kr_intgranted, val);
}
} else
qib_write_kreg(dd, kr_intmask, 0ULL);
}
/*
* Try to cleanup as much as possible for anything that might have gone
* wrong while in freeze mode, such as pio buffers being written by user
* processes (causing armlaunch), send errors due to going into freeze mode,
* etc., and try to avoid causing extra interrupts while doing so.
* Forcibly update the in-memory pioavail register copies after cleanup
* because the chip won't do it while in freeze mode (the register values
* themselves are kept correct).
* Make sure that we don't lose any important interrupts by using the chip
* feature that says that writing 0 to a bit in *clear that is set in
* *status will cause an interrupt to be generated again (if allowed by
* the *mask value).
* This is in chip-specific code because of all of the register accesses,
* even though the details are similar on most chips.
*/
static void qib_7322_clear_freeze(struct qib_devdata *dd)
{
int pidx;
/* disable error interrupts, to avoid confusion */
qib_write_kreg(dd, kr_errmask, 0ULL);
for (pidx = 0; pidx < dd->num_pports; ++pidx)
if (dd->pport[pidx].link_speed_supported)
qib_write_kreg_port(dd->pport + pidx, krp_errmask,
0ULL);
/* also disable interrupts; errormask is sometimes overwriten */
qib_7322_set_intr_state(dd, 0);
/* clear the freeze, and be sure chip saw it */
qib_write_kreg(dd, kr_control, dd->control);
qib_read_kreg32(dd, kr_scratch);
/*
* Force new interrupt if any hwerr, error or interrupt bits are
* still set, and clear "safe" send packet errors related to freeze
* and cancelling sends. Re-enable error interrupts before possible
* force of re-interrupt on pending interrupts.
*/
qib_write_kreg(dd, kr_hwerrclear, 0ULL);
qib_write_kreg(dd, kr_errclear, E_SPKT_ERRS_IGNORE);
qib_write_kreg(dd, kr_errmask, dd->cspec->errormask);
/* We need to purge per-port errs and reset mask, too */
for (pidx = 0; pidx < dd->num_pports; ++pidx) {
if (!dd->pport[pidx].link_speed_supported)
continue;
qib_write_kreg_port(dd->pport + pidx, krp_errclear, ~0Ull);
qib_write_kreg_port(dd->pport + pidx, krp_errmask, ~0Ull);
}
qib_7322_set_intr_state(dd, 1);
}
/* no error handling to speak of */
/**
* qib_7322_handle_hwerrors - display hardware errors.
* @dd: the qlogic_ib device
* @msg: the output buffer
* @msgl: the size of the output buffer
*
* Use same msg buffer as regular errors to avoid excessive stack
* use. Most hardware errors are catastrophic, but for right now,
* we'll print them and continue. We reuse the same message buffer as
* qib_handle_errors() to avoid excessive stack usage.
*/
static void qib_7322_handle_hwerrors(struct qib_devdata *dd, char *msg,
size_t msgl)
{
u64 hwerrs;
u32 ctrl;
int isfatal = 0;
hwerrs = qib_read_kreg64(dd, kr_hwerrstatus);
if (!hwerrs)
goto bail;
if (hwerrs == ~0ULL) {
qib_dev_err(dd,
"Read of hardware error status failed (all bits set); ignoring\n");
goto bail;
}
qib_stats.sps_hwerrs++;
/* Always clear the error status register, except BIST fail */
qib_write_kreg(dd, kr_hwerrclear, hwerrs &
~HWE_MASK(PowerOnBISTFailed));
hwerrs &= dd->cspec->hwerrmask;
/* no EEPROM logging, yet */
if (hwerrs)
qib_devinfo(dd->pcidev,
"Hardware error: hwerr=0x%llx (cleared)\n",
(unsigned long long) hwerrs);
ctrl = qib_read_kreg32(dd, kr_control);
if ((ctrl & SYM_MASK(Control, FreezeMode)) && !dd->diag_client) {
/*
* No recovery yet...
*/
if ((hwerrs & ~HWE_MASK(LATriggered)) ||
dd->cspec->stay_in_freeze) {
/*
* If any set that we aren't ignoring only make the
* complaint once, in case it's stuck or recurring,
* and we get here multiple times
* Force link down, so switch knows, and
* LEDs are turned off.
*/
if (dd->flags & QIB_INITTED)
isfatal = 1;
} else
qib_7322_clear_freeze(dd);
}
if (hwerrs & HWE_MASK(PowerOnBISTFailed)) {
isfatal = 1;
strlcpy(msg,
"[Memory BIST test failed, InfiniPath hardware unusable]",
msgl);
/* ignore from now on, so disable until driver reloaded */
dd->cspec->hwerrmask &= ~HWE_MASK(PowerOnBISTFailed);
qib_write_kreg(dd, kr_hwerrmask, dd->cspec->hwerrmask);
}
err_decode(msg, msgl, hwerrs, qib_7322_hwerror_msgs);
/* Ignore esoteric PLL failures et al. */
qib_dev_err(dd, "%s hardware error\n", msg);
if (hwerrs &
(SYM_MASK(HwErrMask, SDmaMemReadErrMask_0) |
SYM_MASK(HwErrMask, SDmaMemReadErrMask_1))) {
int pidx = 0;
int err;
unsigned long flags;
struct qib_pportdata *ppd = dd->pport;
for (; pidx < dd->num_pports; ++pidx, ppd++) {
err = 0;
if (pidx == 0 && (hwerrs &
SYM_MASK(HwErrMask, SDmaMemReadErrMask_0)))
err++;
if (pidx == 1 && (hwerrs &
SYM_MASK(HwErrMask, SDmaMemReadErrMask_1)))
err++;
if (err) {
spin_lock_irqsave(&ppd->sdma_lock, flags);
dump_sdma_7322_state(ppd);
spin_unlock_irqrestore(&ppd->sdma_lock, flags);
}
}
}
if (isfatal && !dd->diag_client) {
qib_dev_err(dd,
"Fatal Hardware Error, no longer usable, SN %.16s\n",
dd->serial);
/*
* for /sys status file and user programs to print; if no
* trailing brace is copied, we'll know it was truncated.
*/
if (dd->freezemsg)
snprintf(dd->freezemsg, dd->freezelen,
"{%s}", msg);
qib_disable_after_error(dd);
}
bail:;
}
/**
* qib_7322_init_hwerrors - enable hardware errors
* @dd: the qlogic_ib device
*
* now that we have finished initializing everything that might reasonably
* cause a hardware error, and cleared those errors bits as they occur,
* we can enable hardware errors in the mask (potentially enabling
* freeze mode), and enable hardware errors as errors (along with
* everything else) in errormask
*/
static void qib_7322_init_hwerrors(struct qib_devdata *dd)
{
int pidx;
u64 extsval;
extsval = qib_read_kreg64(dd, kr_extstatus);
if (!(extsval & (QIB_EXTS_MEMBIST_DISABLED |
QIB_EXTS_MEMBIST_ENDTEST)))
qib_dev_err(dd, "MemBIST did not complete!\n");
/* never clear BIST failure, so reported on each driver load */
qib_write_kreg(dd, kr_hwerrclear, ~HWE_MASK(PowerOnBISTFailed));
qib_write_kreg(dd, kr_hwerrmask, dd->cspec->hwerrmask);
/* clear all */
qib_write_kreg(dd, kr_errclear, ~0ULL);
/* enable errors that are masked, at least this first time. */
qib_write_kreg(dd, kr_errmask, ~0ULL);
dd->cspec->errormask = qib_read_kreg64(dd, kr_errmask);
for (pidx = 0; pidx < dd->num_pports; ++pidx)
if (dd->pport[pidx].link_speed_supported)
qib_write_kreg_port(dd->pport + pidx, krp_errmask,
~0ULL);
}
/*
* Disable and enable the armlaunch error. Used for PIO bandwidth testing
* on chips that are count-based, rather than trigger-based. There is no
* reference counting, but that's also fine, given the intended use.
* Only chip-specific because it's all register accesses
*/
static void qib_set_7322_armlaunch(struct qib_devdata *dd, u32 enable)
{
if (enable) {
qib_write_kreg(dd, kr_errclear, QIB_E_SPIOARMLAUNCH);
dd->cspec->errormask |= QIB_E_SPIOARMLAUNCH;
} else
dd->cspec->errormask &= ~QIB_E_SPIOARMLAUNCH;
qib_write_kreg(dd, kr_errmask, dd->cspec->errormask);
}
/*
* Formerly took parameter <which> in pre-shifted,
* pre-merged form with LinkCmd and LinkInitCmd
* together, and assuming the zero was NOP.
*/
static void qib_set_ib_7322_lstate(struct qib_pportdata *ppd, u16 linkcmd,
u16 linitcmd)
{
u64 mod_wd;
struct qib_devdata *dd = ppd->dd;
unsigned long flags;
if (linitcmd == QLOGIC_IB_IBCC_LINKINITCMD_DISABLE) {
/*
* If we are told to disable, note that so link-recovery
* code does not attempt to bring us back up.
* Also reset everything that we can, so we start
* completely clean when re-enabled (before we
* actually issue the disable to the IBC)
*/
qib_7322_mini_pcs_reset(ppd);
spin_lock_irqsave(&ppd->lflags_lock, flags);
ppd->lflags |= QIBL_IB_LINK_DISABLED;
spin_unlock_irqrestore(&ppd->lflags_lock, flags);
} else if (linitcmd || linkcmd == QLOGIC_IB_IBCC_LINKCMD_DOWN) {
/*
* Any other linkinitcmd will lead to LINKDOWN and then
* to INIT (if all is well), so clear flag to let
* link-recovery code attempt to bring us back up.
*/
spin_lock_irqsave(&ppd->lflags_lock, flags);
ppd->lflags &= ~QIBL_IB_LINK_DISABLED;
spin_unlock_irqrestore(&ppd->lflags_lock, flags);
/*
* Clear status change interrupt reduction so the
* new state is seen.
*/
ppd->cpspec->ibcctrl_a &=
~SYM_MASK(IBCCtrlA_0, IBStatIntReductionEn);
}
mod_wd = (linkcmd << IBA7322_IBCC_LINKCMD_SHIFT) |
(linitcmd << QLOGIC_IB_IBCC_LINKINITCMD_SHIFT);
qib_write_kreg_port(ppd, krp_ibcctrl_a, ppd->cpspec->ibcctrl_a |
mod_wd);
/* write to chip to prevent back-to-back writes of ibc reg */
qib_write_kreg(dd, kr_scratch, 0);
}
/*
* The total RCV buffer memory is 64KB, used for both ports, and is
* in units of 64 bytes (same as IB flow control credit unit).
* The consumedVL unit in the same registers are in 32 byte units!
* So, a VL15 packet needs 4.50 IB credits, and 9 rx buffer chunks,
* and we can therefore allocate just 9 IB credits for 2 VL15 packets
* in krp_rxcreditvl15, rather than 10.
*/
#define RCV_BUF_UNITSZ 64
#define NUM_RCV_BUF_UNITS(dd) ((64 * 1024) / (RCV_BUF_UNITSZ * dd->num_pports))
static void set_vls(struct qib_pportdata *ppd)
{
int i, numvls, totcred, cred_vl, vl0extra;
struct qib_devdata *dd = ppd->dd;
u64 val;
numvls = qib_num_vls(ppd->vls_operational);
/*
* Set up per-VL credits. Below is kluge based on these assumptions:
* 1) port is disabled at the time early_init is called.
* 2) give VL15 17 credits, for two max-plausible packets.
* 3) Give VL0-N the rest, with any rounding excess used for VL0
*/
/* 2 VL15 packets @ 288 bytes each (including IB headers) */
totcred = NUM_RCV_BUF_UNITS(dd);
cred_vl = (2 * 288 + RCV_BUF_UNITSZ - 1) / RCV_BUF_UNITSZ;
totcred -= cred_vl;
qib_write_kreg_port(ppd, krp_rxcreditvl15, (u64) cred_vl);
cred_vl = totcred / numvls;
vl0extra = totcred - cred_vl * numvls;
qib_write_kreg_port(ppd, krp_rxcreditvl0, cred_vl + vl0extra);
for (i = 1; i < numvls; i++)
qib_write_kreg_port(ppd, krp_rxcreditvl0 + i, cred_vl);
for (; i < 8; i++) /* no buffer space for other VLs */
qib_write_kreg_port(ppd, krp_rxcreditvl0 + i, 0);
/* Notify IBC that credits need to be recalculated */
val = qib_read_kreg_port(ppd, krp_ibsdtestiftx);
val |= SYM_MASK(IB_SDTEST_IF_TX_0, CREDIT_CHANGE);
qib_write_kreg_port(ppd, krp_ibsdtestiftx, val);
qib_write_kreg(dd, kr_scratch, 0ULL);
val &= ~SYM_MASK(IB_SDTEST_IF_TX_0, CREDIT_CHANGE);
qib_write_kreg_port(ppd, krp_ibsdtestiftx, val);
for (i = 0; i < numvls; i++)
val = qib_read_kreg_port(ppd, krp_rxcreditvl0 + i);
val = qib_read_kreg_port(ppd, krp_rxcreditvl15);
/* Change the number of operational VLs */
ppd->cpspec->ibcctrl_a = (ppd->cpspec->ibcctrl_a &
~SYM_MASK(IBCCtrlA_0, NumVLane)) |
((u64)(numvls - 1) << SYM_LSB(IBCCtrlA_0, NumVLane));
qib_write_kreg_port(ppd, krp_ibcctrl_a, ppd->cpspec->ibcctrl_a);
qib_write_kreg(dd, kr_scratch, 0ULL);
}
/*
* The code that deals with actual SerDes is in serdes_7322_init().
* Compared to the code for iba7220, it is minimal.
*/
static int serdes_7322_init(struct qib_pportdata *ppd);
/**
* qib_7322_bringup_serdes - bring up the serdes
* @ppd: physical port on the qlogic_ib device
*/
static int qib_7322_bringup_serdes(struct qib_pportdata *ppd)
{
struct qib_devdata *dd = ppd->dd;
u64 val, guid, ibc;
unsigned long flags;
int ret = 0;
/*
* SerDes model not in Pd, but still need to
* set up much of IBCCtrl and IBCDDRCtrl; move elsewhere
* eventually.
*/
/* Put IBC in reset, sends disabled (should be in reset already) */
ppd->cpspec->ibcctrl_a &= ~SYM_MASK(IBCCtrlA_0, IBLinkEn);
qib_write_kreg_port(ppd, krp_ibcctrl_a, ppd->cpspec->ibcctrl_a);
qib_write_kreg(dd, kr_scratch, 0ULL);
/* ensure previous Tx parameters are not still forced */
qib_write_kreg_port(ppd, krp_tx_deemph_override,
SYM_MASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
reset_tx_deemphasis_override));
if (qib_compat_ddr_negotiate) {
ppd->cpspec->ibdeltainprog = 1;
ppd->cpspec->ibsymsnap = read_7322_creg32_port(ppd,
crp_ibsymbolerr);
ppd->cpspec->iblnkerrsnap = read_7322_creg32_port(ppd,
crp_iblinkerrrecov);
}
/* flowcontrolwatermark is in units of KBytes */
ibc = 0x5ULL << SYM_LSB(IBCCtrlA_0, FlowCtrlWaterMark);
/*
* Flow control is sent this often, even if no changes in
* buffer space occur. Units are 128ns for this chip.
* Set to 3usec.
*/
ibc |= 24ULL << SYM_LSB(IBCCtrlA_0, FlowCtrlPeriod);
/* max error tolerance */
ibc |= 0xfULL << SYM_LSB(IBCCtrlA_0, PhyerrThreshold);
/* IB credit flow control. */
ibc |= 0xfULL << SYM_LSB(IBCCtrlA_0, OverrunThreshold);
/*
* set initial max size pkt IBC will send, including ICRC; it's the
* PIO buffer size in dwords, less 1; also see qib_set_mtu()
*/
ibc |= ((u64)(ppd->ibmaxlen >> 2) + 1) <<
SYM_LSB(IBCCtrlA_0, MaxPktLen);
ppd->cpspec->ibcctrl_a = ibc; /* without linkcmd or linkinitcmd! */
/*
* Reset the PCS interface to the serdes (and also ibc, which is still
* in reset from above). Writes new value of ibcctrl_a as last step.
*/
qib_7322_mini_pcs_reset(ppd);
if (!ppd->cpspec->ibcctrl_b) {
unsigned lse = ppd->link_speed_enabled;
/*
* Not on re-init after reset, establish shadow
* and force initial config.
*/
ppd->cpspec->ibcctrl_b = qib_read_kreg_port(ppd,
krp_ibcctrl_b);
ppd->cpspec->ibcctrl_b &= ~(IBA7322_IBC_SPEED_QDR |
IBA7322_IBC_SPEED_DDR |
IBA7322_IBC_SPEED_SDR |
IBA7322_IBC_WIDTH_AUTONEG |
SYM_MASK(IBCCtrlB_0, IB_LANE_REV_SUPPORTED));
if (lse & (lse - 1)) /* Muliple speeds enabled */
ppd->cpspec->ibcctrl_b |=
(lse << IBA7322_IBC_SPEED_LSB) |
IBA7322_IBC_IBTA_1_2_MASK |
IBA7322_IBC_MAX_SPEED_MASK;
else
ppd->cpspec->ibcctrl_b |= (lse == QIB_IB_QDR) ?
IBA7322_IBC_SPEED_QDR |
IBA7322_IBC_IBTA_1_2_MASK :
(lse == QIB_IB_DDR) ?
IBA7322_IBC_SPEED_DDR :
IBA7322_IBC_SPEED_SDR;
if ((ppd->link_width_enabled & (IB_WIDTH_1X | IB_WIDTH_4X)) ==
(IB_WIDTH_1X | IB_WIDTH_4X))
ppd->cpspec->ibcctrl_b |= IBA7322_IBC_WIDTH_AUTONEG;
else
ppd->cpspec->ibcctrl_b |=
ppd->link_width_enabled == IB_WIDTH_4X ?
IBA7322_IBC_WIDTH_4X_ONLY :
IBA7322_IBC_WIDTH_1X_ONLY;
/* always enable these on driver reload, not sticky */
ppd->cpspec->ibcctrl_b |= (IBA7322_IBC_RXPOL_MASK |
IBA7322_IBC_HRTBT_MASK);
}
qib_write_kreg_port(ppd, krp_ibcctrl_b, ppd->cpspec->ibcctrl_b);
/* setup so we have more time at CFGTEST to change H1 */
val = qib_read_kreg_port(ppd, krp_ibcctrl_c);
val &= ~SYM_MASK(IBCCtrlC_0, IB_FRONT_PORCH);
val |= 0xfULL << SYM_LSB(IBCCtrlC_0, IB_FRONT_PORCH);
qib_write_kreg_port(ppd, krp_ibcctrl_c, val);
serdes_7322_init(ppd);
guid = be64_to_cpu(ppd->guid);
if (!guid) {
if (dd->base_guid)
guid = be64_to_cpu(dd->base_guid) + ppd->port - 1;
ppd->guid = cpu_to_be64(guid);
}
qib_write_kreg_port(ppd, krp_hrtbt_guid, guid);
/* write to chip to prevent back-to-back writes of ibc reg */
qib_write_kreg(dd, kr_scratch, 0);
/* Enable port */
ppd->cpspec->ibcctrl_a |= SYM_MASK(IBCCtrlA_0, IBLinkEn);
set_vls(ppd);
/* initially come up DISABLED, without sending anything. */
val = ppd->cpspec->ibcctrl_a | (QLOGIC_IB_IBCC_LINKINITCMD_DISABLE <<
QLOGIC_IB_IBCC_LINKINITCMD_SHIFT);
qib_write_kreg_port(ppd, krp_ibcctrl_a, val);
qib_write_kreg(dd, kr_scratch, 0ULL);
/* clear the linkinit cmds */
ppd->cpspec->ibcctrl_a = val & ~SYM_MASK(IBCCtrlA_0, LinkInitCmd);
/* be paranoid against later code motion, etc. */
spin_lock_irqsave(&dd->cspec->rcvmod_lock, flags);
ppd->p_rcvctrl |= SYM_MASK(RcvCtrl_0, RcvIBPortEnable);
qib_write_kreg_port(ppd, krp_rcvctrl, ppd->p_rcvctrl);
spin_unlock_irqrestore(&dd->cspec->rcvmod_lock, flags);
/* Also enable IBSTATUSCHG interrupt. */
val = qib_read_kreg_port(ppd, krp_errmask);
qib_write_kreg_port(ppd, krp_errmask,
val | ERR_MASK_N(IBStatusChanged));
/* Always zero until we start messing with SerDes for real */
return ret;
}
/**
* qib_7322_quiet_serdes - set serdes to txidle
* @dd: the qlogic_ib device
* Called when driver is being unloaded
*/
static void qib_7322_mini_quiet_serdes(struct qib_pportdata *ppd)
{
u64 val;
unsigned long flags;
qib_set_ib_7322_lstate(ppd, 0, QLOGIC_IB_IBCC_LINKINITCMD_DISABLE);
spin_lock_irqsave(&ppd->lflags_lock, flags);
ppd->lflags &= ~QIBL_IB_AUTONEG_INPROG;
spin_unlock_irqrestore(&ppd->lflags_lock, flags);
wake_up(&ppd->cpspec->autoneg_wait);
cancel_delayed_work_sync(&ppd->cpspec->autoneg_work);
if (ppd->dd->cspec->r1)
cancel_delayed_work_sync(&ppd->cpspec->ipg_work);
ppd->cpspec->chase_end = 0;
if (ppd->cpspec->chase_timer.data) /* if initted */
del_timer_sync(&ppd->cpspec->chase_timer);
/*
* Despite the name, actually disables IBC as well. Do it when
* we are as sure as possible that no more packets can be
* received, following the down and the PCS reset.
* The actual disabling happens in qib_7322_mini_pci_reset(),
* along with the PCS being reset.
*/
ppd->cpspec->ibcctrl_a &= ~SYM_MASK(IBCCtrlA_0, IBLinkEn);
qib_7322_mini_pcs_reset(ppd);
/*
* Update the adjusted counters so the adjustment persists
* across driver reload.
*/
if (ppd->cpspec->ibsymdelta || ppd->cpspec->iblnkerrdelta ||
ppd->cpspec->ibdeltainprog || ppd->cpspec->iblnkdowndelta) {
struct qib_devdata *dd = ppd->dd;
u64 diagc;
/* enable counter writes */
diagc = qib_read_kreg64(dd, kr_hwdiagctrl);
qib_write_kreg(dd, kr_hwdiagctrl,
diagc | SYM_MASK(HwDiagCtrl, CounterWrEnable));
if (ppd->cpspec->ibsymdelta || ppd->cpspec->ibdeltainprog) {
val = read_7322_creg32_port(ppd, crp_ibsymbolerr);
if (ppd->cpspec->ibdeltainprog)
val -= val - ppd->cpspec->ibsymsnap;
val -= ppd->cpspec->ibsymdelta;
write_7322_creg_port(ppd, crp_ibsymbolerr, val);
}
if (ppd->cpspec->iblnkerrdelta || ppd->cpspec->ibdeltainprog) {
val = read_7322_creg32_port(ppd, crp_iblinkerrrecov);
if (ppd->cpspec->ibdeltainprog)
val -= val - ppd->cpspec->iblnkerrsnap;
val -= ppd->cpspec->iblnkerrdelta;
write_7322_creg_port(ppd, crp_iblinkerrrecov, val);
}
if (ppd->cpspec->iblnkdowndelta) {
val = read_7322_creg32_port(ppd, crp_iblinkdown);
val += ppd->cpspec->iblnkdowndelta;
write_7322_creg_port(ppd, crp_iblinkdown, val);
}
/*
* No need to save ibmalfdelta since IB perfcounters
* are cleared on driver reload.
*/
/* and disable counter writes */
qib_write_kreg(dd, kr_hwdiagctrl, diagc);
}
}
/**
* qib_setup_7322_setextled - set the state of the two external LEDs
* @ppd: physical port on the qlogic_ib device
* @on: whether the link is up or not
*
* The exact combo of LEDs if on is true is determined by looking
* at the ibcstatus.
*
* These LEDs indicate the physical and logical state of IB link.
* For this chip (at least with recommended board pinouts), LED1
* is Yellow (logical state) and LED2 is Green (physical state),
*
* Note: We try to match the Mellanox HCA LED behavior as best
* we can. Green indicates physical link state is OK (something is
* plugged in, and we can train).
* Amber indicates the link is logically up (ACTIVE).
* Mellanox further blinks the amber LED to indicate data packet
* activity, but we have no hardware support for that, so it would
* require waking up every 10-20 msecs and checking the counters
* on the chip, and then turning the LED off if appropriate. That's
* visible overhead, so not something we will do.
*/
static void qib_setup_7322_setextled(struct qib_pportdata *ppd, u32 on)
{
struct qib_devdata *dd = ppd->dd;
u64 extctl, ledblink = 0, val;
unsigned long flags;
int yel, grn;
/*
* The diags use the LED to indicate diag info, so we leave
* the external LED alone when the diags are running.
*/
if (dd->diag_client)
return;
/* Allow override of LED display for, e.g. Locating system in rack */
if (ppd->led_override) {
grn = (ppd->led_override & QIB_LED_PHYS);
yel = (ppd->led_override & QIB_LED_LOG);
} else if (on) {
val = qib_read_kreg_port(ppd, krp_ibcstatus_a);
grn = qib_7322_phys_portstate(val) ==
IB_PHYSPORTSTATE_LINKUP;
yel = qib_7322_iblink_state(val) == IB_PORT_ACTIVE;
} else {
grn = 0;
yel = 0;
}
spin_lock_irqsave(&dd->cspec->gpio_lock, flags);
extctl = dd->cspec->extctrl & (ppd->port == 1 ?
~ExtLED_IB1_MASK : ~ExtLED_IB2_MASK);
if (grn) {
extctl |= ppd->port == 1 ? ExtLED_IB1_GRN : ExtLED_IB2_GRN;
/*
* Counts are in chip clock (4ns) periods.
* This is 1/16 sec (66.6ms) on,
* 3/16 sec (187.5 ms) off, with packets rcvd.
*/
ledblink = ((66600 * 1000UL / 4) << IBA7322_LEDBLINK_ON_SHIFT) |
((187500 * 1000UL / 4) << IBA7322_LEDBLINK_OFF_SHIFT);
}
if (yel)
extctl |= ppd->port == 1 ? ExtLED_IB1_YEL : ExtLED_IB2_YEL;
dd->cspec->extctrl = extctl;
qib_write_kreg(dd, kr_extctrl, dd->cspec->extctrl);
spin_unlock_irqrestore(&dd->cspec->gpio_lock, flags);
if (ledblink) /* blink the LED on packet receive */
qib_write_kreg_port(ppd, krp_rcvpktledcnt, ledblink);
}
#ifdef CONFIG_INFINIBAND_QIB_DCA
static int qib_7322_notify_dca(struct qib_devdata *dd, unsigned long event)
{
switch (event) {
case DCA_PROVIDER_ADD:
if (dd->flags & QIB_DCA_ENABLED)
break;
if (!dca_add_requester(&dd->pcidev->dev)) {
qib_devinfo(dd->pcidev, "DCA enabled\n");
dd->flags |= QIB_DCA_ENABLED;
qib_setup_dca(dd);
}
break;
case DCA_PROVIDER_REMOVE:
if (dd->flags & QIB_DCA_ENABLED) {
dca_remove_requester(&dd->pcidev->dev);
dd->flags &= ~QIB_DCA_ENABLED;
dd->cspec->dca_ctrl = 0;
qib_write_kreg(dd, KREG_IDX(DCACtrlA),
dd->cspec->dca_ctrl);
}
break;
}
return 0;
}
static void qib_update_rhdrq_dca(struct qib_ctxtdata *rcd, int cpu)
{
struct qib_devdata *dd = rcd->dd;
struct qib_chip_specific *cspec = dd->cspec;
if (!(dd->flags & QIB_DCA_ENABLED))
return;
if (cspec->rhdr_cpu[rcd->ctxt] != cpu) {
const struct dca_reg_map *rmp;
cspec->rhdr_cpu[rcd->ctxt] = cpu;
rmp = &dca_rcvhdr_reg_map[rcd->ctxt];
cspec->dca_rcvhdr_ctrl[rmp->shadow_inx] &= rmp->mask;
cspec->dca_rcvhdr_ctrl[rmp->shadow_inx] |=
(u64) dca3_get_tag(&dd->pcidev->dev, cpu) << rmp->lsb;
qib_devinfo(dd->pcidev,
"Ctxt %d cpu %d dca %llx\n", rcd->ctxt, cpu,
(long long) cspec->dca_rcvhdr_ctrl[rmp->shadow_inx]);
qib_write_kreg(dd, rmp->regno,
cspec->dca_rcvhdr_ctrl[rmp->shadow_inx]);
cspec->dca_ctrl |= SYM_MASK(DCACtrlA, RcvHdrqDCAEnable);
qib_write_kreg(dd, KREG_IDX(DCACtrlA), cspec->dca_ctrl);
}
}
static void qib_update_sdma_dca(struct qib_pportdata *ppd, int cpu)
{
struct qib_devdata *dd = ppd->dd;
struct qib_chip_specific *cspec = dd->cspec;
unsigned pidx = ppd->port - 1;
if (!(dd->flags & QIB_DCA_ENABLED))
return;
if (cspec->sdma_cpu[pidx] != cpu) {
cspec->sdma_cpu[pidx] = cpu;
cspec->dca_rcvhdr_ctrl[4] &= ~(ppd->hw_pidx ?
SYM_MASK(DCACtrlF, SendDma1DCAOPH) :
SYM_MASK(DCACtrlF, SendDma0DCAOPH));
cspec->dca_rcvhdr_ctrl[4] |=
(u64) dca3_get_tag(&dd->pcidev->dev, cpu) <<
(ppd->hw_pidx ?
SYM_LSB(DCACtrlF, SendDma1DCAOPH) :
SYM_LSB(DCACtrlF, SendDma0DCAOPH));
qib_devinfo(dd->pcidev,
"sdma %d cpu %d dca %llx\n", ppd->hw_pidx, cpu,
(long long) cspec->dca_rcvhdr_ctrl[4]);
qib_write_kreg(dd, KREG_IDX(DCACtrlF),
cspec->dca_rcvhdr_ctrl[4]);
cspec->dca_ctrl |= ppd->hw_pidx ?
SYM_MASK(DCACtrlA, SendDMAHead1DCAEnable) :
SYM_MASK(DCACtrlA, SendDMAHead0DCAEnable);
qib_write_kreg(dd, KREG_IDX(DCACtrlA), cspec->dca_ctrl);
}
}
static void qib_setup_dca(struct qib_devdata *dd)
{
struct qib_chip_specific *cspec = dd->cspec;
int i;
for (i = 0; i < ARRAY_SIZE(cspec->rhdr_cpu); i++)
cspec->rhdr_cpu[i] = -1;
for (i = 0; i < ARRAY_SIZE(cspec->sdma_cpu); i++)
cspec->sdma_cpu[i] = -1;
cspec->dca_rcvhdr_ctrl[0] =
(1ULL << SYM_LSB(DCACtrlB, RcvHdrq0DCAXfrCnt)) |
(1ULL << SYM_LSB(DCACtrlB, RcvHdrq1DCAXfrCnt)) |
(1ULL << SYM_LSB(DCACtrlB, RcvHdrq2DCAXfrCnt)) |
(1ULL << SYM_LSB(DCACtrlB, RcvHdrq3DCAXfrCnt));
cspec->dca_rcvhdr_ctrl[1] =
(1ULL << SYM_LSB(DCACtrlC, RcvHdrq4DCAXfrCnt)) |
(1ULL << SYM_LSB(DCACtrlC, RcvHdrq5DCAXfrCnt)) |
(1ULL << SYM_LSB(DCACtrlC, RcvHdrq6DCAXfrCnt)) |
(1ULL << SYM_LSB(DCACtrlC, RcvHdrq7DCAXfrCnt));
cspec->dca_rcvhdr_ctrl[2] =
(1ULL << SYM_LSB(DCACtrlD, RcvHdrq8DCAXfrCnt)) |
(1ULL << SYM_LSB(DCACtrlD, RcvHdrq9DCAXfrCnt)) |
(1ULL << SYM_LSB(DCACtrlD, RcvHdrq10DCAXfrCnt)) |
(1ULL << SYM_LSB(DCACtrlD, RcvHdrq11DCAXfrCnt));
cspec->dca_rcvhdr_ctrl[3] =
(1ULL << SYM_LSB(DCACtrlE, RcvHdrq12DCAXfrCnt)) |
(1ULL << SYM_LSB(DCACtrlE, RcvHdrq13DCAXfrCnt)) |
(1ULL << SYM_LSB(DCACtrlE, RcvHdrq14DCAXfrCnt)) |
(1ULL << SYM_LSB(DCACtrlE, RcvHdrq15DCAXfrCnt));
cspec->dca_rcvhdr_ctrl[4] =
(1ULL << SYM_LSB(DCACtrlF, RcvHdrq16DCAXfrCnt)) |
(1ULL << SYM_LSB(DCACtrlF, RcvHdrq17DCAXfrCnt));
for (i = 0; i < ARRAY_SIZE(cspec->sdma_cpu); i++)
qib_write_kreg(dd, KREG_IDX(DCACtrlB) + i,
cspec->dca_rcvhdr_ctrl[i]);
for (i = 0; i < cspec->num_msix_entries; i++)
setup_dca_notifier(dd, &cspec->msix_entries[i]);
}
static void qib_irq_notifier_notify(struct irq_affinity_notify *notify,
const cpumask_t *mask)
{
struct qib_irq_notify *n =
container_of(notify, struct qib_irq_notify, notify);
int cpu = cpumask_first(mask);
if (n->rcv) {
struct qib_ctxtdata *rcd = (struct qib_ctxtdata *)n->arg;
qib_update_rhdrq_dca(rcd, cpu);
} else {
struct qib_pportdata *ppd = (struct qib_pportdata *)n->arg;
qib_update_sdma_dca(ppd, cpu);
}
}
static void qib_irq_notifier_release(struct kref *ref)
{
struct qib_irq_notify *n =
container_of(ref, struct qib_irq_notify, notify.kref);
struct qib_devdata *dd;
if (n->rcv) {
struct qib_ctxtdata *rcd = (struct qib_ctxtdata *)n->arg;
dd = rcd->dd;
} else {
struct qib_pportdata *ppd = (struct qib_pportdata *)n->arg;
dd = ppd->dd;
}
qib_devinfo(dd->pcidev,
"release on HCA notify 0x%p n 0x%p\n", ref, n);
kfree(n);
}
#endif
/*
* Disable MSIx interrupt if enabled, call generic MSIx code
* to cleanup, and clear pending MSIx interrupts.
* Used for fallback to INTx, after reset, and when MSIx setup fails.
*/
static void qib_7322_nomsix(struct qib_devdata *dd)
{
u64 intgranted;
int n;
dd->cspec->main_int_mask = ~0ULL;
n = dd->cspec->num_msix_entries;
if (n) {
int i;
dd->cspec->num_msix_entries = 0;
for (i = 0; i < n; i++) {
#ifdef CONFIG_INFINIBAND_QIB_DCA
reset_dca_notifier(dd, &dd->cspec->msix_entries[i]);
#endif
irq_set_affinity_hint(
dd->cspec->msix_entries[i].msix.vector, NULL);
free_cpumask_var(dd->cspec->msix_entries[i].mask);
free_irq(dd->cspec->msix_entries[i].msix.vector,
dd->cspec->msix_entries[i].arg);
}
qib_nomsix(dd);
}
/* make sure no MSIx interrupts are left pending */
intgranted = qib_read_kreg64(dd, kr_intgranted);
if (intgranted)
qib_write_kreg(dd, kr_intgranted, intgranted);
}
static void qib_7322_free_irq(struct qib_devdata *dd)
{
if (dd->cspec->irq) {
free_irq(dd->cspec->irq, dd);
dd->cspec->irq = 0;
}
qib_7322_nomsix(dd);
}
static void qib_setup_7322_cleanup(struct qib_devdata *dd)
{
int i;
#ifdef CONFIG_INFINIBAND_QIB_DCA
if (dd->flags & QIB_DCA_ENABLED) {
dca_remove_requester(&dd->pcidev->dev);
dd->flags &= ~QIB_DCA_ENABLED;
dd->cspec->dca_ctrl = 0;
qib_write_kreg(dd, KREG_IDX(DCACtrlA), dd->cspec->dca_ctrl);
}
#endif
qib_7322_free_irq(dd);
kfree(dd->cspec->cntrs);
kfree(dd->cspec->sendchkenable);
kfree(dd->cspec->sendgrhchk);
kfree(dd->cspec->sendibchk);
kfree(dd->cspec->msix_entries);
for (i = 0; i < dd->num_pports; i++) {
unsigned long flags;
u32 mask = QSFP_GPIO_MOD_PRS_N |
(QSFP_GPIO_MOD_PRS_N << QSFP_GPIO_PORT2_SHIFT);
kfree(dd->pport[i].cpspec->portcntrs);
if (dd->flags & QIB_HAS_QSFP) {
spin_lock_irqsave(&dd->cspec->gpio_lock, flags);
dd->cspec->gpio_mask &= ~mask;
qib_write_kreg(dd, kr_gpio_mask, dd->cspec->gpio_mask);
spin_unlock_irqrestore(&dd->cspec->gpio_lock, flags);
qib_qsfp_deinit(&dd->pport[i].cpspec->qsfp_data);
}
if (dd->pport[i].ibport_data.smi_ah)
ib_destroy_ah(&dd->pport[i].ibport_data.smi_ah->ibah);
}
}
/* handle SDMA interrupts */
static void sdma_7322_intr(struct qib_devdata *dd, u64 istat)
{
struct qib_pportdata *ppd0 = &dd->pport[0];
struct qib_pportdata *ppd1 = &dd->pport[1];
u64 intr0 = istat & (INT_MASK_P(SDma, 0) |
INT_MASK_P(SDmaIdle, 0) | INT_MASK_P(SDmaProgress, 0));
u64 intr1 = istat & (INT_MASK_P(SDma, 1) |
INT_MASK_P(SDmaIdle, 1) | INT_MASK_P(SDmaProgress, 1));
if (intr0)
qib_sdma_intr(ppd0);
if (intr1)
qib_sdma_intr(ppd1);
if (istat & INT_MASK_PM(SDmaCleanupDone, 0))
qib_sdma_process_event(ppd0, qib_sdma_event_e20_hw_started);
if (istat & INT_MASK_PM(SDmaCleanupDone, 1))
qib_sdma_process_event(ppd1, qib_sdma_event_e20_hw_started);
}
/*
* Set or clear the Send buffer available interrupt enable bit.
*/
static void qib_wantpiobuf_7322_intr(struct qib_devdata *dd, u32 needint)
{
unsigned long flags;
spin_lock_irqsave(&dd->sendctrl_lock, flags);
if (needint)
dd->sendctrl |= SYM_MASK(SendCtrl, SendIntBufAvail);
else
dd->sendctrl &= ~SYM_MASK(SendCtrl, SendIntBufAvail);
qib_write_kreg(dd, kr_sendctrl, dd->sendctrl);
qib_write_kreg(dd, kr_scratch, 0ULL);
spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
}
/*
* Somehow got an interrupt with reserved bits set in interrupt status.
* Print a message so we know it happened, then clear them.
* keep mainline interrupt handler cache-friendly
*/
static noinline void unknown_7322_ibits(struct qib_devdata *dd, u64 istat)
{
u64 kills;
char msg[128];
kills = istat & ~QIB_I_BITSEXTANT;
qib_dev_err(dd,
"Clearing reserved interrupt(s) 0x%016llx: %s\n",
(unsigned long long) kills, msg);
qib_write_kreg(dd, kr_intmask, (dd->cspec->int_enable_mask & ~kills));
}
/* keep mainline interrupt handler cache-friendly */
static noinline void unknown_7322_gpio_intr(struct qib_devdata *dd)
{
u32 gpiostatus;
int handled = 0;
int pidx;
/*
* Boards for this chip currently don't use GPIO interrupts,
* so clear by writing GPIOstatus to GPIOclear, and complain
* to developer. To avoid endless repeats, clear
* the bits in the mask, since there is some kind of
* programming error or chip problem.
*/
gpiostatus = qib_read_kreg32(dd, kr_gpio_status);
/*
* In theory, writing GPIOstatus to GPIOclear could
* have a bad side-effect on some diagnostic that wanted
* to poll for a status-change, but the various shadows
* make that problematic at best. Diags will just suppress
* all GPIO interrupts during such tests.
*/
qib_write_kreg(dd, kr_gpio_clear, gpiostatus);
/*
* Check for QSFP MOD_PRS changes
* only works for single port if IB1 != pidx1
*/
for (pidx = 0; pidx < dd->num_pports && (dd->flags & QIB_HAS_QSFP);
++pidx) {
struct qib_pportdata *ppd;
struct qib_qsfp_data *qd;
u32 mask;
if (!dd->pport[pidx].link_speed_supported)
continue;
mask = QSFP_GPIO_MOD_PRS_N;
ppd = dd->pport + pidx;
mask <<= (QSFP_GPIO_PORT2_SHIFT * ppd->hw_pidx);
if (gpiostatus & dd->cspec->gpio_mask & mask) {
u64 pins;
qd = &ppd->cpspec->qsfp_data;
gpiostatus &= ~mask;
pins = qib_read_kreg64(dd, kr_extstatus);
pins >>= SYM_LSB(EXTStatus, GPIOIn);
if (!(pins & mask)) {
++handled;
qd->t_insert = jiffies;
queue_work(ib_wq, &qd->work);
}
}
}
if (gpiostatus && !handled) {
const u32 mask = qib_read_kreg32(dd, kr_gpio_mask);
u32 gpio_irq = mask & gpiostatus;
/*
* Clear any troublemakers, and update chip from shadow
*/
dd->cspec->gpio_mask &= ~gpio_irq;
qib_write_kreg(dd, kr_gpio_mask, dd->cspec->gpio_mask);
}
}
/*
* Handle errors and unusual events first, separate function
* to improve cache hits for fast path interrupt handling.
*/
static noinline void unlikely_7322_intr(struct qib_devdata *dd, u64 istat)
{
if (istat & ~QIB_I_BITSEXTANT)
unknown_7322_ibits(dd, istat);
if (istat & QIB_I_GPIO)
unknown_7322_gpio_intr(dd);
if (istat & QIB_I_C_ERROR) {
qib_write_kreg(dd, kr_errmask, 0ULL);
tasklet_schedule(&dd->error_tasklet);
}
if (istat & INT_MASK_P(Err, 0) && dd->rcd[0])
handle_7322_p_errors(dd->rcd[0]->ppd);
if (istat & INT_MASK_P(Err, 1) && dd->rcd[1])
handle_7322_p_errors(dd->rcd[1]->ppd);
}
/*
* Dynamically adjust the rcv int timeout for a context based on incoming
* packet rate.
*/
static void adjust_rcv_timeout(struct qib_ctxtdata *rcd, int npkts)
{
struct qib_devdata *dd = rcd->dd;
u32 timeout = dd->cspec->rcvavail_timeout[rcd->ctxt];
/*
* Dynamically adjust idle timeout on chip
* based on number of packets processed.
*/
if (npkts < rcv_int_count && timeout > 2)
timeout >>= 1;
else if (npkts >= rcv_int_count && timeout < rcv_int_timeout)
timeout = min(timeout << 1, rcv_int_timeout);
else
return;
dd->cspec->rcvavail_timeout[rcd->ctxt] = timeout;
qib_write_kreg(dd, kr_rcvavailtimeout + rcd->ctxt, timeout);
}
/*
* This is the main interrupt handler.
* It will normally only be used for low frequency interrupts but may
* have to handle all interrupts if INTx is enabled or fewer than normal
* MSIx interrupts were allocated.
* This routine should ignore the interrupt bits for any of the
* dedicated MSIx handlers.
*/
static irqreturn_t qib_7322intr(int irq, void *data)
{
struct qib_devdata *dd = data;
irqreturn_t ret;
u64 istat;
u64 ctxtrbits;
u64 rmask;
unsigned i;
u32 npkts;
if ((dd->flags & (QIB_PRESENT | QIB_BADINTR)) != QIB_PRESENT) {
/*
* This return value is not great, but we do not want the
* interrupt core code to remove our interrupt handler
* because we don't appear to be handling an interrupt
* during a chip reset.
*/
ret = IRQ_HANDLED;
goto bail;
}
istat = qib_read_kreg64(dd, kr_intstatus);
if (unlikely(istat == ~0ULL)) {
qib_bad_intrstatus(dd);
qib_dev_err(dd, "Interrupt status all f's, skipping\n");
/* don't know if it was our interrupt or not */
ret = IRQ_NONE;
goto bail;
}
istat &= dd->cspec->main_int_mask;
if (unlikely(!istat)) {
/* already handled, or shared and not us */
ret = IRQ_NONE;
goto bail;
}
this_cpu_inc(*dd->int_counter);
/* handle "errors" of various kinds first, device ahead of port */
if (unlikely(istat & (~QIB_I_BITSEXTANT | QIB_I_GPIO |
QIB_I_C_ERROR | INT_MASK_P(Err, 0) |
INT_MASK_P(Err, 1))))
unlikely_7322_intr(dd, istat);
/*
* Clear the interrupt bits we found set, relatively early, so we
* "know" know the chip will have seen this by the time we process
* the queue, and will re-interrupt if necessary. The processor
* itself won't take the interrupt again until we return.
*/
qib_write_kreg(dd, kr_intclear, istat);
/*
* Handle kernel receive queues before checking for pio buffers
* available since receives can overflow; piobuf waiters can afford
* a few extra cycles, since they were waiting anyway.
*/
ctxtrbits = istat & (QIB_I_RCVAVAIL_MASK | QIB_I_RCVURG_MASK);
if (ctxtrbits) {
rmask = (1ULL << QIB_I_RCVAVAIL_LSB) |
(1ULL << QIB_I_RCVURG_LSB);
for (i = 0; i < dd->first_user_ctxt; i++) {
if (ctxtrbits & rmask) {
ctxtrbits &= ~rmask;
if (dd->rcd[i])
qib_kreceive(dd->rcd[i], NULL, &npkts);
}
rmask <<= 1;
}
if (ctxtrbits) {
ctxtrbits = (ctxtrbits >> QIB_I_RCVAVAIL_LSB) |
(ctxtrbits >> QIB_I_RCVURG_LSB);
qib_handle_urcv(dd, ctxtrbits);
}
}
if (istat & (QIB_I_P_SDMAINT(0) | QIB_I_P_SDMAINT(1)))
sdma_7322_intr(dd, istat);
if ((istat & QIB_I_SPIOBUFAVAIL) && (dd->flags & QIB_INITTED))
qib_ib_piobufavail(dd);
ret = IRQ_HANDLED;
bail:
return ret;
}
/*
* Dedicated receive packet available interrupt handler.
*/
static irqreturn_t qib_7322pintr(int irq, void *data)
{
struct qib_ctxtdata *rcd = data;
struct qib_devdata *dd = rcd->dd;
u32 npkts;
if ((dd->flags & (QIB_PRESENT | QIB_BADINTR)) != QIB_PRESENT)
/*
* This return value is not great, but we do not want the
* interrupt core code to remove our interrupt handler
* because we don't appear to be handling an interrupt
* during a chip reset.
*/
return IRQ_HANDLED;
this_cpu_inc(*dd->int_counter);
/* Clear the interrupt bit we expect to be set. */
qib_write_kreg(dd, kr_intclear, ((1ULL << QIB_I_RCVAVAIL_LSB) |
(1ULL << QIB_I_RCVURG_LSB)) << rcd->ctxt);
qib_kreceive(rcd, NULL, &npkts);
return IRQ_HANDLED;
}
/*
* Dedicated Send buffer available interrupt handler.
*/
static irqreturn_t qib_7322bufavail(int irq, void *data)
{
struct qib_devdata *dd = data;
if ((dd->flags & (QIB_PRESENT | QIB_BADINTR)) != QIB_PRESENT)
/*
* This return value is not great, but we do not want the
* interrupt core code to remove our interrupt handler
* because we don't appear to be handling an interrupt
* during a chip reset.
*/
return IRQ_HANDLED;
this_cpu_inc(*dd->int_counter);
/* Clear the interrupt bit we expect to be set. */
qib_write_kreg(dd, kr_intclear, QIB_I_SPIOBUFAVAIL);
/* qib_ib_piobufavail() will clear the want PIO interrupt if needed */
if (dd->flags & QIB_INITTED)
qib_ib_piobufavail(dd);
else
qib_wantpiobuf_7322_intr(dd, 0);
return IRQ_HANDLED;
}
/*
* Dedicated Send DMA interrupt handler.
*/
static irqreturn_t sdma_intr(int irq, void *data)
{
struct qib_pportdata *ppd = data;
struct qib_devdata *dd = ppd->dd;
if ((dd->flags & (QIB_PRESENT | QIB_BADINTR)) != QIB_PRESENT)
/*
* This return value is not great, but we do not want the
* interrupt core code to remove our interrupt handler
* because we don't appear to be handling an interrupt
* during a chip reset.
*/
return IRQ_HANDLED;
this_cpu_inc(*dd->int_counter);
/* Clear the interrupt bit we expect to be set. */
qib_write_kreg(dd, kr_intclear, ppd->hw_pidx ?
INT_MASK_P(SDma, 1) : INT_MASK_P(SDma, 0));
qib_sdma_intr(ppd);
return IRQ_HANDLED;
}
/*
* Dedicated Send DMA idle interrupt handler.
*/
static irqreturn_t sdma_idle_intr(int irq, void *data)
{
struct qib_pportdata *ppd = data;
struct qib_devdata *dd = ppd->dd;
if ((dd->flags & (QIB_PRESENT | QIB_BADINTR)) != QIB_PRESENT)
/*
* This return value is not great, but we do not want the
* interrupt core code to remove our interrupt handler
* because we don't appear to be handling an interrupt
* during a chip reset.
*/
return IRQ_HANDLED;
this_cpu_inc(*dd->int_counter);
/* Clear the interrupt bit we expect to be set. */
qib_write_kreg(dd, kr_intclear, ppd->hw_pidx ?
INT_MASK_P(SDmaIdle, 1) : INT_MASK_P(SDmaIdle, 0));
qib_sdma_intr(ppd);
return IRQ_HANDLED;
}
/*
* Dedicated Send DMA progress interrupt handler.
*/
static irqreturn_t sdma_progress_intr(int irq, void *data)
{
struct qib_pportdata *ppd = data;
struct qib_devdata *dd = ppd->dd;
if ((dd->flags & (QIB_PRESENT | QIB_BADINTR)) != QIB_PRESENT)
/*
* This return value is not great, but we do not want the
* interrupt core code to remove our interrupt handler
* because we don't appear to be handling an interrupt
* during a chip reset.
*/
return IRQ_HANDLED;
this_cpu_inc(*dd->int_counter);
/* Clear the interrupt bit we expect to be set. */
qib_write_kreg(dd, kr_intclear, ppd->hw_pidx ?
INT_MASK_P(SDmaProgress, 1) :
INT_MASK_P(SDmaProgress, 0));
qib_sdma_intr(ppd);
return IRQ_HANDLED;
}
/*
* Dedicated Send DMA cleanup interrupt handler.
*/
static irqreturn_t sdma_cleanup_intr(int irq, void *data)
{
struct qib_pportdata *ppd = data;
struct qib_devdata *dd = ppd->dd;
if ((dd->flags & (QIB_PRESENT | QIB_BADINTR)) != QIB_PRESENT)
/*
* This return value is not great, but we do not want the
* interrupt core code to remove our interrupt handler
* because we don't appear to be handling an interrupt
* during a chip reset.
*/
return IRQ_HANDLED;
this_cpu_inc(*dd->int_counter);
/* Clear the interrupt bit we expect to be set. */
qib_write_kreg(dd, kr_intclear, ppd->hw_pidx ?
INT_MASK_PM(SDmaCleanupDone, 1) :
INT_MASK_PM(SDmaCleanupDone, 0));
qib_sdma_process_event(ppd, qib_sdma_event_e20_hw_started);
return IRQ_HANDLED;
}
#ifdef CONFIG_INFINIBAND_QIB_DCA
static void reset_dca_notifier(struct qib_devdata *dd, struct qib_msix_entry *m)
{
if (!m->dca)
return;
qib_devinfo(dd->pcidev,
"Disabling notifier on HCA %d irq %d\n",
dd->unit,
m->msix.vector);
irq_set_affinity_notifier(
m->msix.vector,
NULL);
m->notifier = NULL;
}
static void setup_dca_notifier(struct qib_devdata *dd, struct qib_msix_entry *m)
{
struct qib_irq_notify *n;
if (!m->dca)
return;
n = kzalloc(sizeof(*n), GFP_KERNEL);
if (n) {
int ret;
m->notifier = n;
n->notify.irq = m->msix.vector;
n->notify.notify = qib_irq_notifier_notify;
n->notify.release = qib_irq_notifier_release;
n->arg = m->arg;
n->rcv = m->rcv;
qib_devinfo(dd->pcidev,
"set notifier irq %d rcv %d notify %p\n",
n->notify.irq, n->rcv, &n->notify);
ret = irq_set_affinity_notifier(
n->notify.irq,
&n->notify);
if (ret) {
m->notifier = NULL;
kfree(n);
}
}
}
#endif
/*
* Set up our chip-specific interrupt handler.
* The interrupt type has already been setup, so
* we just need to do the registration and error checking.
* If we are using MSIx interrupts, we may fall back to
* INTx later, if the interrupt handler doesn't get called
* within 1/2 second (see verify_interrupt()).
*/
static void qib_setup_7322_interrupt(struct qib_devdata *dd, int clearpend)
{
int ret, i, msixnum;
u64 redirect[6];
u64 mask;
const struct cpumask *local_mask;
int firstcpu, secondcpu = 0, currrcvcpu = 0;
if (!dd->num_pports)
return;
if (clearpend) {
/*
* if not switching interrupt types, be sure interrupts are
* disabled, and then clear anything pending at this point,
* because we are starting clean.
*/
qib_7322_set_intr_state(dd, 0);
/* clear the reset error, init error/hwerror mask */
qib_7322_init_hwerrors(dd);
/* clear any interrupt bits that might be set */
qib_write_kreg(dd, kr_intclear, ~0ULL);
/* make sure no pending MSIx intr, and clear diag reg */
qib_write_kreg(dd, kr_intgranted, ~0ULL);
qib_write_kreg(dd, kr_vecclr_wo_int, ~0ULL);
}
if (!dd->cspec->num_msix_entries) {
/* Try to get INTx interrupt */
try_intx:
if (!dd->pcidev->irq) {
qib_dev_err(dd,
"irq is 0, BIOS error? Interrupts won't work\n");
goto bail;
}
ret = request_irq(dd->pcidev->irq, qib_7322intr,
IRQF_SHARED, QIB_DRV_NAME, dd);
if (ret) {
qib_dev_err(dd,
"Couldn't setup INTx interrupt (irq=%d): %d\n",
dd->pcidev->irq, ret);
goto bail;
}
dd->cspec->irq = dd->pcidev->irq;
dd->cspec->main_int_mask = ~0ULL;
goto bail;
}
/* Try to get MSIx interrupts */
memset(redirect, 0, sizeof(redirect));
mask = ~0ULL;
msixnum = 0;
local_mask = cpumask_of_pcibus(dd->pcidev->bus);
firstcpu = cpumask_first(local_mask);
if (firstcpu >= nr_cpu_ids ||
cpumask_weight(local_mask) == num_online_cpus()) {
local_mask = topology_core_cpumask(0);
firstcpu = cpumask_first(local_mask);
}
if (firstcpu < nr_cpu_ids) {
secondcpu = cpumask_next(firstcpu, local_mask);
if (secondcpu >= nr_cpu_ids)
secondcpu = firstcpu;
currrcvcpu = secondcpu;
}
for (i = 0; msixnum < dd->cspec->num_msix_entries; i++) {
irq_handler_t handler;
void *arg;
u64 val;
int lsb, reg, sh;
#ifdef CONFIG_INFINIBAND_QIB_DCA
int dca = 0;
#endif
dd->cspec->msix_entries[msixnum].
name[sizeof(dd->cspec->msix_entries[msixnum].name) - 1]
= '\0';
if (i < ARRAY_SIZE(irq_table)) {
if (irq_table[i].port) {
/* skip if for a non-configured port */
if (irq_table[i].port > dd->num_pports)
continue;
arg = dd->pport + irq_table[i].port - 1;
} else
arg = dd;
#ifdef CONFIG_INFINIBAND_QIB_DCA
dca = irq_table[i].dca;
#endif
lsb = irq_table[i].lsb;
handler = irq_table[i].handler;
snprintf(dd->cspec->msix_entries[msixnum].name,
sizeof(dd->cspec->msix_entries[msixnum].name)
- 1,
QIB_DRV_NAME "%d%s", dd->unit,
irq_table[i].name);
} else {
unsigned ctxt;
ctxt = i - ARRAY_SIZE(irq_table);
/* per krcvq context receive interrupt */
arg = dd->rcd[ctxt];
if (!arg)
continue;
if (qib_krcvq01_no_msi && ctxt < 2)
continue;
#ifdef CONFIG_INFINIBAND_QIB_DCA
dca = 1;
#endif
lsb = QIB_I_RCVAVAIL_LSB + ctxt;
handler = qib_7322pintr;
snprintf(dd->cspec->msix_entries[msixnum].name,
sizeof(dd->cspec->msix_entries[msixnum].name)
- 1,
QIB_DRV_NAME "%d (kctx)", dd->unit);
}
ret = request_irq(
dd->cspec->msix_entries[msixnum].msix.vector,
handler, 0, dd->cspec->msix_entries[msixnum].name,
arg);
if (ret) {
/*
* Shouldn't happen since the enable said we could
* have as many as we are trying to setup here.
*/
qib_dev_err(dd,
"Couldn't setup MSIx interrupt (vec=%d, irq=%d): %d\n",
msixnum,
dd->cspec->msix_entries[msixnum].msix.vector,
ret);
qib_7322_nomsix(dd);
goto try_intx;
}
dd->cspec->msix_entries[msixnum].arg = arg;
#ifdef CONFIG_INFINIBAND_QIB_DCA
dd->cspec->msix_entries[msixnum].dca = dca;
dd->cspec->msix_entries[msixnum].rcv =
handler == qib_7322pintr;
#endif
if (lsb >= 0) {
reg = lsb / IBA7322_REDIRECT_VEC_PER_REG;
sh = (lsb % IBA7322_REDIRECT_VEC_PER_REG) *
SYM_LSB(IntRedirect0, vec1);
mask &= ~(1ULL << lsb);
redirect[reg] |= ((u64) msixnum) << sh;
}
val = qib_read_kreg64(dd, 2 * msixnum + 1 +
(QIB_7322_MsixTable_OFFS / sizeof(u64)));
if (firstcpu < nr_cpu_ids &&
zalloc_cpumask_var(
&dd->cspec->msix_entries[msixnum].mask,
GFP_KERNEL)) {
if (handler == qib_7322pintr) {
cpumask_set_cpu(currrcvcpu,
dd->cspec->msix_entries[msixnum].mask);
currrcvcpu = cpumask_next(currrcvcpu,
local_mask);
if (currrcvcpu >= nr_cpu_ids)
currrcvcpu = secondcpu;
} else {
cpumask_set_cpu(firstcpu,
dd->cspec->msix_entries[msixnum].mask);
}
irq_set_affinity_hint(
dd->cspec->msix_entries[msixnum].msix.vector,
dd->cspec->msix_entries[msixnum].mask);
}
msixnum++;
}
/* Initialize the vector mapping */
for (i = 0; i < ARRAY_SIZE(redirect); i++)
qib_write_kreg(dd, kr_intredirect + i, redirect[i]);
dd->cspec->main_int_mask = mask;
tasklet_init(&dd->error_tasklet, qib_error_tasklet,
(unsigned long)dd);
bail:;
}
/**
* qib_7322_boardname - fill in the board name and note features
* @dd: the qlogic_ib device
*
* info will be based on the board revision register
*/
static unsigned qib_7322_boardname(struct qib_devdata *dd)
{
/* Will need enumeration of board-types here */
char *n;
u32 boardid, namelen;
unsigned features = DUAL_PORT_CAP;
boardid = SYM_FIELD(dd->revision, Revision, BoardID);
switch (boardid) {
case 0:
n = "InfiniPath_QLE7342_Emulation";
break;
case 1:
n = "InfiniPath_QLE7340";
dd->flags |= QIB_HAS_QSFP;
features = PORT_SPD_CAP;
break;
case 2:
n = "InfiniPath_QLE7342";
dd->flags |= QIB_HAS_QSFP;
break;
case 3:
n = "InfiniPath_QMI7342";
break;
case 4:
n = "InfiniPath_Unsupported7342";
qib_dev_err(dd, "Unsupported version of QMH7342\n");
features = 0;
break;
case BOARD_QMH7342:
n = "InfiniPath_QMH7342";
features = 0x24;
break;
case BOARD_QME7342:
n = "InfiniPath_QME7342";
break;
case 8:
n = "InfiniPath_QME7362";
dd->flags |= QIB_HAS_QSFP;
break;
case BOARD_QMH7360:
n = "Intel IB QDR 1P FLR-QSFP Adptr";
dd->flags |= QIB_HAS_QSFP;
break;
case 15:
n = "InfiniPath_QLE7342_TEST";
dd->flags |= QIB_HAS_QSFP;
break;
default:
n = "InfiniPath_QLE73xy_UNKNOWN";
qib_dev_err(dd, "Unknown 7322 board type %u\n", boardid);
break;
}
dd->board_atten = 1; /* index into txdds_Xdr */
namelen = strlen(n) + 1;
dd->boardname = kmalloc(namelen, GFP_KERNEL);
if (!dd->boardname)
qib_dev_err(dd, "Failed allocation for board name: %s\n", n);
else
snprintf(dd->boardname, namelen, "%s", n);
snprintf(dd->boardversion, sizeof(dd->boardversion),
"ChipABI %u.%u, %s, InfiniPath%u %u.%u, SW Compat %u\n",
QIB_CHIP_VERS_MAJ, QIB_CHIP_VERS_MIN, dd->boardname,
(unsigned)SYM_FIELD(dd->revision, Revision_R, Arch),
dd->majrev, dd->minrev,
(unsigned)SYM_FIELD(dd->revision, Revision_R, SW));
if (qib_singleport && (features >> PORT_SPD_CAP_SHIFT) & PORT_SPD_CAP) {
qib_devinfo(dd->pcidev,
"IB%u: Forced to single port mode by module parameter\n",
dd->unit);
features &= PORT_SPD_CAP;
}
return features;
}
/*
* This routine sleeps, so it can only be called from user context, not
* from interrupt context.
*/
static int qib_do_7322_reset(struct qib_devdata *dd)
{
u64 val;
u64 *msix_vecsave;
int i, msix_entries, ret = 1;
u16 cmdval;
u8 int_line, clinesz;
unsigned long flags;
/* Use dev_err so it shows up in logs, etc. */
qib_dev_err(dd, "Resetting InfiniPath unit %u\n", dd->unit);
qib_pcie_getcmd(dd, &cmdval, &int_line, &clinesz);
msix_entries = dd->cspec->num_msix_entries;
/* no interrupts till re-initted */
qib_7322_set_intr_state(dd, 0);
if (msix_entries) {
qib_7322_nomsix(dd);
/* can be up to 512 bytes, too big for stack */
msix_vecsave = kmalloc(2 * dd->cspec->num_msix_entries *
sizeof(u64), GFP_KERNEL);
if (!msix_vecsave)
qib_dev_err(dd, "No mem to save MSIx data\n");
} else
msix_vecsave = NULL;
/*
* Core PCI (as of 2.6.18) doesn't save or rewrite the full vector
* info that is set up by the BIOS, so we have to save and restore
* it ourselves. There is some risk something could change it,
* after we save it, but since we have disabled the MSIx, it
* shouldn't be touched...
*/
for (i = 0; i < msix_entries; i++) {
u64 vecaddr, vecdata;
vecaddr = qib_read_kreg64(dd, 2 * i +
(QIB_7322_MsixTable_OFFS / sizeof(u64)));
vecdata = qib_read_kreg64(dd, 1 + 2 * i +
(QIB_7322_MsixTable_OFFS / sizeof(u64)));
if (msix_vecsave) {
msix_vecsave[2 * i] = vecaddr;
/* save it without the masked bit set */
msix_vecsave[1 + 2 * i] = vecdata & ~0x100000000ULL;
}
}
dd->pport->cpspec->ibdeltainprog = 0;
dd->pport->cpspec->ibsymdelta = 0;
dd->pport->cpspec->iblnkerrdelta = 0;
dd->pport->cpspec->ibmalfdelta = 0;
/* so we check interrupts work again */
dd->z_int_counter = qib_int_counter(dd);
/*
* Keep chip from being accessed until we are ready. Use
* writeq() directly, to allow the write even though QIB_PRESENT
* isn't set.
*/
dd->flags &= ~(QIB_INITTED | QIB_PRESENT | QIB_BADINTR);
dd->flags |= QIB_DOING_RESET;
val = dd->control | QLOGIC_IB_C_RESET;
writeq(val, &dd->kregbase[kr_control]);
for (i = 1; i <= 5; i++) {
/*
* Allow MBIST, etc. to complete; longer on each retry.
* We sometimes get machine checks from bus timeout if no
* response, so for now, make it *really* long.
*/
msleep(1000 + (1 + i) * 3000);
qib_pcie_reenable(dd, cmdval, int_line, clinesz);
/*
* Use readq directly, so we don't need to mark it as PRESENT
* until we get a successful indication that all is well.
*/
val = readq(&dd->kregbase[kr_revision]);
if (val == dd->revision)
break;
if (i == 5) {
qib_dev_err(dd,
"Failed to initialize after reset, unusable\n");
ret = 0;
goto bail;
}
}
dd->flags |= QIB_PRESENT; /* it's back */
if (msix_entries) {
/* restore the MSIx vector address and data if saved above */
for (i = 0; i < msix_entries; i++) {
dd->cspec->msix_entries[i].msix.entry = i;
if (!msix_vecsave || !msix_vecsave[2 * i])
continue;
qib_write_kreg(dd, 2 * i +
(QIB_7322_MsixTable_OFFS / sizeof(u64)),
msix_vecsave[2 * i]);
qib_write_kreg(dd, 1 + 2 * i +
(QIB_7322_MsixTable_OFFS / sizeof(u64)),
msix_vecsave[1 + 2 * i]);
}
}
/* initialize the remaining registers. */
for (i = 0; i < dd->num_pports; ++i)
write_7322_init_portregs(&dd->pport[i]);
write_7322_initregs(dd);
if (qib_pcie_params(dd, dd->lbus_width,
&dd->cspec->num_msix_entries,
dd->cspec->msix_entries))
qib_dev_err(dd,
"Reset failed to setup PCIe or interrupts; continuing anyway\n");
qib_setup_7322_interrupt(dd, 1);
for (i = 0; i < dd->num_pports; ++i) {
struct qib_pportdata *ppd = &dd->pport[i];
spin_lock_irqsave(&ppd->lflags_lock, flags);
ppd->lflags |= QIBL_IB_FORCE_NOTIFY;
ppd->lflags &= ~QIBL_IB_AUTONEG_FAILED;
spin_unlock_irqrestore(&ppd->lflags_lock, flags);
}
bail:
dd->flags &= ~QIB_DOING_RESET; /* OK or not, no longer resetting */
kfree(msix_vecsave);
return ret;
}
/**
* qib_7322_put_tid - write a TID to the chip
* @dd: the qlogic_ib device
* @tidptr: pointer to the expected TID (in chip) to update
* @tidtype: 0 for eager, 1 for expected
* @pa: physical address of in memory buffer; tidinvalid if freeing
*/
static void qib_7322_put_tid(struct qib_devdata *dd, u64 __iomem *tidptr,
u32 type, unsigned long pa)
{
if (!(dd->flags & QIB_PRESENT))
return;
if (pa != dd->tidinvalid) {
u64 chippa = pa >> IBA7322_TID_PA_SHIFT;
/* paranoia checks */
if (pa != (chippa << IBA7322_TID_PA_SHIFT)) {
qib_dev_err(dd, "Physaddr %lx not 2KB aligned!\n",
pa);
return;
}
if (chippa >= (1UL << IBA7322_TID_SZ_SHIFT)) {
qib_dev_err(dd,
"Physical page address 0x%lx larger than supported\n",
pa);
return;
}
if (type == RCVHQ_RCV_TYPE_EAGER)
chippa |= dd->tidtemplate;
else /* for now, always full 4KB page */
chippa |= IBA7322_TID_SZ_4K;
pa = chippa;
}
writeq(pa, tidptr);
mmiowb();
}
/**
* qib_7322_clear_tids - clear all TID entries for a ctxt, expected and eager
* @dd: the qlogic_ib device
* @ctxt: the ctxt
*
* clear all TID entries for a ctxt, expected and eager.
* Used from qib_close().
*/
static void qib_7322_clear_tids(struct qib_devdata *dd,
struct qib_ctxtdata *rcd)
{
u64 __iomem *tidbase;
unsigned long tidinv;
u32 ctxt;
int i;
if (!dd->kregbase || !rcd)
return;
ctxt = rcd->ctxt;
tidinv = dd->tidinvalid;
tidbase = (u64 __iomem *)
((char __iomem *) dd->kregbase +
dd->rcvtidbase +
ctxt * dd->rcvtidcnt * sizeof(*tidbase));
for (i = 0; i < dd->rcvtidcnt; i++)
qib_7322_put_tid(dd, &tidbase[i], RCVHQ_RCV_TYPE_EXPECTED,
tidinv);
tidbase = (u64 __iomem *)
((char __iomem *) dd->kregbase +
dd->rcvegrbase +
rcd->rcvegr_tid_base * sizeof(*tidbase));
for (i = 0; i < rcd->rcvegrcnt; i++)
qib_7322_put_tid(dd, &tidbase[i], RCVHQ_RCV_TYPE_EAGER,
tidinv);
}
/**
* qib_7322_tidtemplate - setup constants for TID updates
* @dd: the qlogic_ib device
*
* We setup stuff that we use a lot, to avoid calculating each time
*/
static void qib_7322_tidtemplate(struct qib_devdata *dd)
{
/*
* For now, we always allocate 4KB buffers (at init) so we can
* receive max size packets. We may want a module parameter to
* specify 2KB or 4KB and/or make it per port instead of per device
* for those who want to reduce memory footprint. Note that the
* rcvhdrentsize size must be large enough to hold the largest
* IB header (currently 96 bytes) that we expect to handle (plus of
* course the 2 dwords of RHF).
*/
if (dd->rcvegrbufsize == 2048)
dd->tidtemplate = IBA7322_TID_SZ_2K;
else if (dd->rcvegrbufsize == 4096)
dd->tidtemplate = IBA7322_TID_SZ_4K;
dd->tidinvalid = 0;
}
/**
* qib_init_7322_get_base_info - set chip-specific flags for user code
* @rcd: the qlogic_ib ctxt
* @kbase: qib_base_info pointer
*
* We set the PCIE flag because the lower bandwidth on PCIe vs
* HyperTransport can affect some user packet algorithims.
*/
static int qib_7322_get_base_info(struct qib_ctxtdata *rcd,
struct qib_base_info *kinfo)
{
kinfo->spi_runtime_flags |= QIB_RUNTIME_CTXT_MSB_IN_QP |
QIB_RUNTIME_PCIE | QIB_RUNTIME_NODMA_RTAIL |
QIB_RUNTIME_HDRSUPP | QIB_RUNTIME_SDMA;
if (rcd->dd->cspec->r1)
kinfo->spi_runtime_flags |= QIB_RUNTIME_RCHK;
if (rcd->dd->flags & QIB_USE_SPCL_TRIG)
kinfo->spi_runtime_flags |= QIB_RUNTIME_SPECIAL_TRIGGER;
return 0;
}
static struct qib_message_header *
qib_7322_get_msgheader(struct qib_devdata *dd, __le32 *rhf_addr)
{
u32 offset = qib_hdrget_offset(rhf_addr);
return (struct qib_message_header *)
(rhf_addr - dd->rhf_offset + offset);
}
/*
* Configure number of contexts.
*/
static void qib_7322_config_ctxts(struct qib_devdata *dd)
{
unsigned long flags;
u32 nchipctxts;
nchipctxts = qib_read_kreg32(dd, kr_contextcnt);
dd->cspec->numctxts = nchipctxts;
if (qib_n_krcv_queues > 1 && dd->num_pports) {
dd->first_user_ctxt = NUM_IB_PORTS +
(qib_n_krcv_queues - 1) * dd->num_pports;
if (dd->first_user_ctxt > nchipctxts)
dd->first_user_ctxt = nchipctxts;
dd->n_krcv_queues = dd->first_user_ctxt / dd->num_pports;
} else {
dd->first_user_ctxt = NUM_IB_PORTS;
dd->n_krcv_queues = 1;
}
if (!qib_cfgctxts) {
int nctxts = dd->first_user_ctxt + num_online_cpus();
if (nctxts <= 6)
dd->ctxtcnt = 6;
else if (nctxts <= 10)
dd->ctxtcnt = 10;
else if (nctxts <= nchipctxts)
dd->ctxtcnt = nchipctxts;
} else if (qib_cfgctxts < dd->num_pports)
dd->ctxtcnt = dd->num_pports;
else if (qib_cfgctxts <= nchipctxts)
dd->ctxtcnt = qib_cfgctxts;
if (!dd->ctxtcnt) /* none of the above, set to max */
dd->ctxtcnt = nchipctxts;
/*
* Chip can be configured for 6, 10, or 18 ctxts, and choice
* affects number of eager TIDs per ctxt (1K, 2K, 4K).
* Lock to be paranoid about later motion, etc.
*/
spin_lock_irqsave(&dd->cspec->rcvmod_lock, flags);
if (dd->ctxtcnt > 10)
dd->rcvctrl |= 2ULL << SYM_LSB(RcvCtrl, ContextCfg);
else if (dd->ctxtcnt > 6)
dd->rcvctrl |= 1ULL << SYM_LSB(RcvCtrl, ContextCfg);
/* else configure for default 6 receive ctxts */
/* The XRC opcode is 5. */
dd->rcvctrl |= 5ULL << SYM_LSB(RcvCtrl, XrcTypeCode);
/*
* RcvCtrl *must* be written here so that the
* chip understands how to change rcvegrcnt below.
*/
qib_write_kreg(dd, kr_rcvctrl, dd->rcvctrl);
spin_unlock_irqrestore(&dd->cspec->rcvmod_lock, flags);
/* kr_rcvegrcnt changes based on the number of contexts enabled */
dd->cspec->rcvegrcnt = qib_read_kreg32(dd, kr_rcvegrcnt);
if (qib_rcvhdrcnt)
dd->rcvhdrcnt = max(dd->cspec->rcvegrcnt, qib_rcvhdrcnt);
else
dd->rcvhdrcnt = 2 * max(dd->cspec->rcvegrcnt,
dd->num_pports > 1 ? 1024U : 2048U);
}
static int qib_7322_get_ib_cfg(struct qib_pportdata *ppd, int which)
{
int lsb, ret = 0;
u64 maskr; /* right-justified mask */
switch (which) {
case QIB_IB_CFG_LWID_ENB: /* Get allowed Link-width */
ret = ppd->link_width_enabled;
goto done;
case QIB_IB_CFG_LWID: /* Get currently active Link-width */
ret = ppd->link_width_active;
goto done;
case QIB_IB_CFG_SPD_ENB: /* Get allowed Link speeds */
ret = ppd->link_speed_enabled;
goto done;
case QIB_IB_CFG_SPD: /* Get current Link spd */
ret = ppd->link_speed_active;
goto done;
case QIB_IB_CFG_RXPOL_ENB: /* Get Auto-RX-polarity enable */
lsb = SYM_LSB(IBCCtrlB_0, IB_POLARITY_REV_SUPP);
maskr = SYM_RMASK(IBCCtrlB_0, IB_POLARITY_REV_SUPP);
break;
case QIB_IB_CFG_LREV_ENB: /* Get Auto-Lane-reversal enable */
lsb = SYM_LSB(IBCCtrlB_0, IB_LANE_REV_SUPPORTED);
maskr = SYM_RMASK(IBCCtrlB_0, IB_LANE_REV_SUPPORTED);
break;
case QIB_IB_CFG_LINKLATENCY:
ret = qib_read_kreg_port(ppd, krp_ibcstatus_b) &
SYM_MASK(IBCStatusB_0, LinkRoundTripLatency);
goto done;
case QIB_IB_CFG_OP_VLS:
ret = ppd->vls_operational;
goto done;
case QIB_IB_CFG_VL_HIGH_CAP:
ret = 16;
goto done;
case QIB_IB_CFG_VL_LOW_CAP:
ret = 16;
goto done;
case QIB_IB_CFG_OVERRUN_THRESH: /* IB overrun threshold */
ret = SYM_FIELD(ppd->cpspec->ibcctrl_a, IBCCtrlA_0,
OverrunThreshold);
goto done;
case QIB_IB_CFG_PHYERR_THRESH: /* IB PHY error threshold */
ret = SYM_FIELD(ppd->cpspec->ibcctrl_a, IBCCtrlA_0,
PhyerrThreshold);
goto done;
case QIB_IB_CFG_LINKDEFAULT: /* IB link default (sleep/poll) */
/* will only take effect when the link state changes */
ret = (ppd->cpspec->ibcctrl_a &
SYM_MASK(IBCCtrlA_0, LinkDownDefaultState)) ?
IB_LINKINITCMD_SLEEP : IB_LINKINITCMD_POLL;
goto done;
case QIB_IB_CFG_HRTBT: /* Get Heartbeat off/enable/auto */
lsb = IBA7322_IBC_HRTBT_LSB;
maskr = IBA7322_IBC_HRTBT_RMASK; /* OR of AUTO and ENB */
break;
case QIB_IB_CFG_PMA_TICKS:
/*
* 0x00 = 10x link transfer rate or 4 nsec. for 2.5Gbs
* Since the clock is always 250MHz, the value is 3, 1 or 0.
*/
if (ppd->link_speed_active == QIB_IB_QDR)
ret = 3;
else if (ppd->link_speed_active == QIB_IB_DDR)
ret = 1;
else
ret = 0;
goto done;
default:
ret = -EINVAL;
goto done;
}
ret = (int)((ppd->cpspec->ibcctrl_b >> lsb) & maskr);
done:
return ret;
}
/*
* Below again cribbed liberally from older version. Do not lean
* heavily on it.
*/
#define IBA7322_IBC_DLIDLMC_SHIFT QIB_7322_IBCCtrlB_0_IB_DLID_LSB
#define IBA7322_IBC_DLIDLMC_MASK (QIB_7322_IBCCtrlB_0_IB_DLID_RMASK \
| (QIB_7322_IBCCtrlB_0_IB_DLID_MASK_RMASK << 16))
static int qib_7322_set_ib_cfg(struct qib_pportdata *ppd, int which, u32 val)
{
struct qib_devdata *dd = ppd->dd;
u64 maskr; /* right-justified mask */
int lsb, ret = 0;
u16 lcmd, licmd;
unsigned long flags;
switch (which) {
case QIB_IB_CFG_LIDLMC:
/*
* Set LID and LMC. Combined to avoid possible hazard
* caller puts LMC in 16MSbits, DLID in 16LSbits of val
*/
lsb = IBA7322_IBC_DLIDLMC_SHIFT;
maskr = IBA7322_IBC_DLIDLMC_MASK;
/*
* For header-checking, the SLID in the packet will
* be masked with SendIBSLMCMask, and compared
* with SendIBSLIDAssignMask. Make sure we do not
* set any bits not covered by the mask, or we get
* false-positives.
*/
qib_write_kreg_port(ppd, krp_sendslid,
val & (val >> 16) & SendIBSLIDAssignMask);
qib_write_kreg_port(ppd, krp_sendslidmask,
(val >> 16) & SendIBSLMCMask);
break;
case QIB_IB_CFG_LWID_ENB: /* set allowed Link-width */
ppd->link_width_enabled = val;
/* convert IB value to chip register value */
if (val == IB_WIDTH_1X)
val = 0;
else if (val == IB_WIDTH_4X)
val = 1;
else
val = 3;
maskr = SYM_RMASK(IBCCtrlB_0, IB_NUM_CHANNELS);
lsb = SYM_LSB(IBCCtrlB_0, IB_NUM_CHANNELS);
break;
case QIB_IB_CFG_SPD_ENB: /* set allowed Link speeds */
/*
* As with width, only write the actual register if the
* link is currently down, otherwise takes effect on next
* link change. Since setting is being explicitly requested
* (via MAD or sysfs), clear autoneg failure status if speed
* autoneg is enabled.
*/
ppd->link_speed_enabled = val;
val <<= IBA7322_IBC_SPEED_LSB;
maskr = IBA7322_IBC_SPEED_MASK | IBA7322_IBC_IBTA_1_2_MASK |
IBA7322_IBC_MAX_SPEED_MASK;
if (val & (val - 1)) {
/* Muliple speeds enabled */
val |= IBA7322_IBC_IBTA_1_2_MASK |
IBA7322_IBC_MAX_SPEED_MASK;
spin_lock_irqsave(&ppd->lflags_lock, flags);
ppd->lflags &= ~QIBL_IB_AUTONEG_FAILED;
spin_unlock_irqrestore(&ppd->lflags_lock, flags);
} else if (val & IBA7322_IBC_SPEED_QDR)
val |= IBA7322_IBC_IBTA_1_2_MASK;
/* IBTA 1.2 mode + min/max + speed bits are contiguous */
lsb = SYM_LSB(IBCCtrlB_0, IB_ENHANCED_MODE);
break;
case QIB_IB_CFG_RXPOL_ENB: /* set Auto-RX-polarity enable */
lsb = SYM_LSB(IBCCtrlB_0, IB_POLARITY_REV_SUPP);
maskr = SYM_RMASK(IBCCtrlB_0, IB_POLARITY_REV_SUPP);
break;
case QIB_IB_CFG_LREV_ENB: /* set Auto-Lane-reversal enable */
lsb = SYM_LSB(IBCCtrlB_0, IB_LANE_REV_SUPPORTED);
maskr = SYM_RMASK(IBCCtrlB_0, IB_LANE_REV_SUPPORTED);
break;
case QIB_IB_CFG_OVERRUN_THRESH: /* IB overrun threshold */
maskr = SYM_FIELD(ppd->cpspec->ibcctrl_a, IBCCtrlA_0,
OverrunThreshold);
if (maskr != val) {
ppd->cpspec->ibcctrl_a &=
~SYM_MASK(IBCCtrlA_0, OverrunThreshold);
ppd->cpspec->ibcctrl_a |= (u64) val <<
SYM_LSB(IBCCtrlA_0, OverrunThreshold);
qib_write_kreg_port(ppd, krp_ibcctrl_a,
ppd->cpspec->ibcctrl_a);
qib_write_kreg(dd, kr_scratch, 0ULL);
}
goto bail;
case QIB_IB_CFG_PHYERR_THRESH: /* IB PHY error threshold */
maskr = SYM_FIELD(ppd->cpspec->ibcctrl_a, IBCCtrlA_0,
PhyerrThreshold);
if (maskr != val) {
ppd->cpspec->ibcctrl_a &=
~SYM_MASK(IBCCtrlA_0, PhyerrThreshold);
ppd->cpspec->ibcctrl_a |= (u64) val <<
SYM_LSB(IBCCtrlA_0, PhyerrThreshold);
qib_write_kreg_port(ppd, krp_ibcctrl_a,
ppd->cpspec->ibcctrl_a);
qib_write_kreg(dd, kr_scratch, 0ULL);
}
goto bail;
case QIB_IB_CFG_PKEYS: /* update pkeys */
maskr = (u64) ppd->pkeys[0] | ((u64) ppd->pkeys[1] << 16) |
((u64) ppd->pkeys[2] << 32) |
((u64) ppd->pkeys[3] << 48);
qib_write_kreg_port(ppd, krp_partitionkey, maskr);
goto bail;
case QIB_IB_CFG_LINKDEFAULT: /* IB link default (sleep/poll) */
/* will only take effect when the link state changes */
if (val == IB_LINKINITCMD_POLL)
ppd->cpspec->ibcctrl_a &=
~SYM_MASK(IBCCtrlA_0, LinkDownDefaultState);
else /* SLEEP */
ppd->cpspec->ibcctrl_a |=
SYM_MASK(IBCCtrlA_0, LinkDownDefaultState);
qib_write_kreg_port(ppd, krp_ibcctrl_a, ppd->cpspec->ibcctrl_a);
qib_write_kreg(dd, kr_scratch, 0ULL);
goto bail;
case QIB_IB_CFG_MTU: /* update the MTU in IBC */
/*
* Update our housekeeping variables, and set IBC max
* size, same as init code; max IBC is max we allow in
* buffer, less the qword pbc, plus 1 for ICRC, in dwords
* Set even if it's unchanged, print debug message only
* on changes.
*/
val = (ppd->ibmaxlen >> 2) + 1;
ppd->cpspec->ibcctrl_a &= ~SYM_MASK(IBCCtrlA_0, MaxPktLen);
ppd->cpspec->ibcctrl_a |= (u64)val <<
SYM_LSB(IBCCtrlA_0, MaxPktLen);
qib_write_kreg_port(ppd, krp_ibcctrl_a,
ppd->cpspec->ibcctrl_a);
qib_write_kreg(dd, kr_scratch, 0ULL);
goto bail;
case QIB_IB_CFG_LSTATE: /* set the IB link state */
switch (val & 0xffff0000) {
case IB_LINKCMD_DOWN:
lcmd = QLOGIC_IB_IBCC_LINKCMD_DOWN;
ppd->cpspec->ibmalfusesnap = 1;
ppd->cpspec->ibmalfsnap = read_7322_creg32_port(ppd,
crp_errlink);
if (!ppd->cpspec->ibdeltainprog &&
qib_compat_ddr_negotiate) {
ppd->cpspec->ibdeltainprog = 1;
ppd->cpspec->ibsymsnap =
read_7322_creg32_port(ppd,
crp_ibsymbolerr);
ppd->cpspec->iblnkerrsnap =
read_7322_creg32_port(ppd,
crp_iblinkerrrecov);
}
break;
case IB_LINKCMD_ARMED:
lcmd = QLOGIC_IB_IBCC_LINKCMD_ARMED;
if (ppd->cpspec->ibmalfusesnap) {
ppd->cpspec->ibmalfusesnap = 0;
ppd->cpspec->ibmalfdelta +=
read_7322_creg32_port(ppd,
crp_errlink) -
ppd->cpspec->ibmalfsnap;
}
break;
case IB_LINKCMD_ACTIVE:
lcmd = QLOGIC_IB_IBCC_LINKCMD_ACTIVE;
break;
default:
ret = -EINVAL;
qib_dev_err(dd, "bad linkcmd req 0x%x\n", val >> 16);
goto bail;
}
switch (val & 0xffff) {
case IB_LINKINITCMD_NOP:
licmd = 0;
break;
case IB_LINKINITCMD_POLL:
licmd = QLOGIC_IB_IBCC_LINKINITCMD_POLL;
break;
case IB_LINKINITCMD_SLEEP:
licmd = QLOGIC_IB_IBCC_LINKINITCMD_SLEEP;
break;
case IB_LINKINITCMD_DISABLE:
licmd = QLOGIC_IB_IBCC_LINKINITCMD_DISABLE;
ppd->cpspec->chase_end = 0;
/*
* stop state chase counter and timer, if running.
* wait forpending timer, but don't clear .data (ppd)!
*/
if (ppd->cpspec->chase_timer.expires) {
del_timer_sync(&ppd->cpspec->chase_timer);
ppd->cpspec->chase_timer.expires = 0;
}
break;
default:
ret = -EINVAL;
qib_dev_err(dd, "bad linkinitcmd req 0x%x\n",
val & 0xffff);
goto bail;
}
qib_set_ib_7322_lstate(ppd, lcmd, licmd);
goto bail;
case QIB_IB_CFG_OP_VLS:
if (ppd->vls_operational != val) {
ppd->vls_operational = val;
set_vls(ppd);
}
goto bail;
case QIB_IB_CFG_VL_HIGH_LIMIT:
qib_write_kreg_port(ppd, krp_highprio_limit, val);
goto bail;
case QIB_IB_CFG_HRTBT: /* set Heartbeat off/enable/auto */
if (val > 3) {
ret = -EINVAL;
goto bail;
}
lsb = IBA7322_IBC_HRTBT_LSB;
maskr = IBA7322_IBC_HRTBT_RMASK; /* OR of AUTO and ENB */
break;
case QIB_IB_CFG_PORT:
/* val is the port number of the switch we are connected to. */
if (ppd->dd->cspec->r1) {
cancel_delayed_work(&ppd->cpspec->ipg_work);
ppd->cpspec->ipg_tries = 0;
}
goto bail;
default:
ret = -EINVAL;
goto bail;
}
ppd->cpspec->ibcctrl_b &= ~(maskr << lsb);
ppd->cpspec->ibcctrl_b |= (((u64) val & maskr) << lsb);
qib_write_kreg_port(ppd, krp_ibcctrl_b, ppd->cpspec->ibcctrl_b);
qib_write_kreg(dd, kr_scratch, 0);
bail:
return ret;
}
static int qib_7322_set_loopback(struct qib_pportdata *ppd, const char *what)
{
int ret = 0;
u64 val, ctrlb;
/* only IBC loopback, may add serdes and xgxs loopbacks later */
if (!strncmp(what, "ibc", 3)) {
ppd->cpspec->ibcctrl_a |= SYM_MASK(IBCCtrlA_0,
Loopback);
val = 0; /* disable heart beat, so link will come up */
qib_devinfo(ppd->dd->pcidev, "Enabling IB%u:%u IBC loopback\n",
ppd->dd->unit, ppd->port);
} else if (!strncmp(what, "off", 3)) {
ppd->cpspec->ibcctrl_a &= ~SYM_MASK(IBCCtrlA_0,
Loopback);
/* enable heart beat again */
val = IBA7322_IBC_HRTBT_RMASK << IBA7322_IBC_HRTBT_LSB;
qib_devinfo(ppd->dd->pcidev,
"Disabling IB%u:%u IBC loopback (normal)\n",
ppd->dd->unit, ppd->port);
} else
ret = -EINVAL;
if (!ret) {
qib_write_kreg_port(ppd, krp_ibcctrl_a,
ppd->cpspec->ibcctrl_a);
ctrlb = ppd->cpspec->ibcctrl_b & ~(IBA7322_IBC_HRTBT_MASK
<< IBA7322_IBC_HRTBT_LSB);
ppd->cpspec->ibcctrl_b = ctrlb | val;
qib_write_kreg_port(ppd, krp_ibcctrl_b,
ppd->cpspec->ibcctrl_b);
qib_write_kreg(ppd->dd, kr_scratch, 0);
}
return ret;
}
static void get_vl_weights(struct qib_pportdata *ppd, unsigned regno,
struct ib_vl_weight_elem *vl)
{
unsigned i;
for (i = 0; i < 16; i++, regno++, vl++) {
u32 val = qib_read_kreg_port(ppd, regno);
vl->vl = (val >> SYM_LSB(LowPriority0_0, VirtualLane)) &
SYM_RMASK(LowPriority0_0, VirtualLane);
vl->weight = (val >> SYM_LSB(LowPriority0_0, Weight)) &
SYM_RMASK(LowPriority0_0, Weight);
}
}
static void set_vl_weights(struct qib_pportdata *ppd, unsigned regno,
struct ib_vl_weight_elem *vl)
{
unsigned i;
for (i = 0; i < 16; i++, regno++, vl++) {
u64 val;
val = ((vl->vl & SYM_RMASK(LowPriority0_0, VirtualLane)) <<
SYM_LSB(LowPriority0_0, VirtualLane)) |
((vl->weight & SYM_RMASK(LowPriority0_0, Weight)) <<
SYM_LSB(LowPriority0_0, Weight));
qib_write_kreg_port(ppd, regno, val);
}
if (!(ppd->p_sendctrl & SYM_MASK(SendCtrl_0, IBVLArbiterEn))) {
struct qib_devdata *dd = ppd->dd;
unsigned long flags;
spin_lock_irqsave(&dd->sendctrl_lock, flags);
ppd->p_sendctrl |= SYM_MASK(SendCtrl_0, IBVLArbiterEn);
qib_write_kreg_port(ppd, krp_sendctrl, ppd->p_sendctrl);
qib_write_kreg(dd, kr_scratch, 0);
spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
}
}
static int qib_7322_get_ib_table(struct qib_pportdata *ppd, int which, void *t)
{
switch (which) {
case QIB_IB_TBL_VL_HIGH_ARB:
get_vl_weights(ppd, krp_highprio_0, t);
break;
case QIB_IB_TBL_VL_LOW_ARB:
get_vl_weights(ppd, krp_lowprio_0, t);
break;
default:
return -EINVAL;
}
return 0;
}
static int qib_7322_set_ib_table(struct qib_pportdata *ppd, int which, void *t)
{
switch (which) {
case QIB_IB_TBL_VL_HIGH_ARB:
set_vl_weights(ppd, krp_highprio_0, t);
break;
case QIB_IB_TBL_VL_LOW_ARB:
set_vl_weights(ppd, krp_lowprio_0, t);
break;
default:
return -EINVAL;
}
return 0;
}
static void qib_update_7322_usrhead(struct qib_ctxtdata *rcd, u64 hd,
u32 updegr, u32 egrhd, u32 npkts)
{
/*
* Need to write timeout register before updating rcvhdrhead to ensure
* that the timer is enabled on reception of a packet.
*/
if (hd >> IBA7322_HDRHEAD_PKTINT_SHIFT)
adjust_rcv_timeout(rcd, npkts);
if (updegr)
qib_write_ureg(rcd->dd, ur_rcvegrindexhead, egrhd, rcd->ctxt);
mmiowb();
qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
mmiowb();
}
static u32 qib_7322_hdrqempty(struct qib_ctxtdata *rcd)
{
u32 head, tail;
head = qib_read_ureg32(rcd->dd, ur_rcvhdrhead, rcd->ctxt);
if (rcd->rcvhdrtail_kvaddr)
tail = qib_get_rcvhdrtail(rcd);
else
tail = qib_read_ureg32(rcd->dd, ur_rcvhdrtail, rcd->ctxt);
return head == tail;
}
#define RCVCTRL_COMMON_MODS (QIB_RCVCTRL_CTXT_ENB | \
QIB_RCVCTRL_CTXT_DIS | \
QIB_RCVCTRL_TIDFLOW_ENB | \
QIB_RCVCTRL_TIDFLOW_DIS | \
QIB_RCVCTRL_TAILUPD_ENB | \
QIB_RCVCTRL_TAILUPD_DIS | \
QIB_RCVCTRL_INTRAVAIL_ENB | \
QIB_RCVCTRL_INTRAVAIL_DIS | \
QIB_RCVCTRL_BP_ENB | \
QIB_RCVCTRL_BP_DIS)
#define RCVCTRL_PORT_MODS (QIB_RCVCTRL_CTXT_ENB | \
QIB_RCVCTRL_CTXT_DIS | \
QIB_RCVCTRL_PKEY_DIS | \
QIB_RCVCTRL_PKEY_ENB)
/*
* Modify the RCVCTRL register in chip-specific way. This
* is a function because bit positions and (future) register
* location is chip-specifc, but the needed operations are
* generic. <op> is a bit-mask because we often want to
* do multiple modifications.
*/
static void rcvctrl_7322_mod(struct qib_pportdata *ppd, unsigned int op,
int ctxt)
{
struct qib_devdata *dd = ppd->dd;
struct qib_ctxtdata *rcd;
u64 mask, val;
unsigned long flags;
spin_lock_irqsave(&dd->cspec->rcvmod_lock, flags);
if (op & QIB_RCVCTRL_TIDFLOW_ENB)
dd->rcvctrl |= SYM_MASK(RcvCtrl, TidFlowEnable);
if (op & QIB_RCVCTRL_TIDFLOW_DIS)
dd->rcvctrl &= ~SYM_MASK(RcvCtrl, TidFlowEnable);
if (op & QIB_RCVCTRL_TAILUPD_ENB)
dd->rcvctrl |= SYM_MASK(RcvCtrl, TailUpd);
if (op & QIB_RCVCTRL_TAILUPD_DIS)
dd->rcvctrl &= ~SYM_MASK(RcvCtrl, TailUpd);
if (op & QIB_RCVCTRL_PKEY_ENB)
ppd->p_rcvctrl &= ~SYM_MASK(RcvCtrl_0, RcvPartitionKeyDisable);
if (op & QIB_RCVCTRL_PKEY_DIS)
ppd->p_rcvctrl |= SYM_MASK(RcvCtrl_0, RcvPartitionKeyDisable);
if (ctxt < 0) {
mask = (1ULL << dd->ctxtcnt) - 1;
rcd = NULL;
} else {
mask = (1ULL << ctxt);
rcd = dd->rcd[ctxt];
}
if ((op & QIB_RCVCTRL_CTXT_ENB) && rcd) {
ppd->p_rcvctrl |=
(mask << SYM_LSB(RcvCtrl_0, ContextEnableKernel));
if (!(dd->flags & QIB_NODMA_RTAIL)) {
op |= QIB_RCVCTRL_TAILUPD_ENB; /* need reg write */
dd->rcvctrl |= SYM_MASK(RcvCtrl, TailUpd);
}
/* Write these registers before the context is enabled. */
qib_write_kreg_ctxt(dd, krc_rcvhdrtailaddr, ctxt,
rcd->rcvhdrqtailaddr_phys);
qib_write_kreg_ctxt(dd, krc_rcvhdraddr, ctxt,
rcd->rcvhdrq_phys);
rcd->seq_cnt = 1;
}
if (op & QIB_RCVCTRL_CTXT_DIS)
ppd->p_rcvctrl &=
~(mask << SYM_LSB(RcvCtrl_0, ContextEnableKernel));
if (op & QIB_RCVCTRL_BP_ENB)
dd->rcvctrl |= mask << SYM_LSB(RcvCtrl, dontDropRHQFull);
if (op & QIB_RCVCTRL_BP_DIS)
dd->rcvctrl &= ~(mask << SYM_LSB(RcvCtrl, dontDropRHQFull));
if (op & QIB_RCVCTRL_INTRAVAIL_ENB)
dd->rcvctrl |= (mask << SYM_LSB(RcvCtrl, IntrAvail));
if (op & QIB_RCVCTRL_INTRAVAIL_DIS)
dd->rcvctrl &= ~(mask << SYM_LSB(RcvCtrl, IntrAvail));
/*
* Decide which registers to write depending on the ops enabled.
* Special case is "flush" (no bits set at all)
* which needs to write both.
*/
if (op == 0 || (op & RCVCTRL_COMMON_MODS))
qib_write_kreg(dd, kr_rcvctrl, dd->rcvctrl);
if (op == 0 || (op & RCVCTRL_PORT_MODS))
qib_write_kreg_port(ppd, krp_rcvctrl, ppd->p_rcvctrl);
if ((op & QIB_RCVCTRL_CTXT_ENB) && dd->rcd[ctxt]) {
/*
* Init the context registers also; if we were
* disabled, tail and head should both be zero
* already from the enable, but since we don't
* know, we have to do it explicitly.
*/
val = qib_read_ureg32(dd, ur_rcvegrindextail, ctxt);
qib_write_ureg(dd, ur_rcvegrindexhead, val, ctxt);
/* be sure enabling write seen; hd/tl should be 0 */
(void) qib_read_kreg32(dd, kr_scratch);
val = qib_read_ureg32(dd, ur_rcvhdrtail, ctxt);
dd->rcd[ctxt]->head = val;
/* If kctxt, interrupt on next receive. */
if (ctxt < dd->first_user_ctxt)
val |= dd->rhdrhead_intr_off;
qib_write_ureg(dd, ur_rcvhdrhead, val, ctxt);
} else if ((op & QIB_RCVCTRL_INTRAVAIL_ENB) &&
dd->rcd[ctxt] && dd->rhdrhead_intr_off) {
/* arm rcv interrupt */
val = dd->rcd[ctxt]->head | dd->rhdrhead_intr_off;
qib_write_ureg(dd, ur_rcvhdrhead, val, ctxt);
}
if (op & QIB_RCVCTRL_CTXT_DIS) {
unsigned f;
/* Now that the context is disabled, clear these registers. */
if (ctxt >= 0) {
qib_write_kreg_ctxt(dd, krc_rcvhdrtailaddr, ctxt, 0);
qib_write_kreg_ctxt(dd, krc_rcvhdraddr, ctxt, 0);
for (f = 0; f < NUM_TIDFLOWS_CTXT; f++)
qib_write_ureg(dd, ur_rcvflowtable + f,
TIDFLOW_ERRBITS, ctxt);
} else {
unsigned i;
for (i = 0; i < dd->cfgctxts; i++) {
qib_write_kreg_ctxt(dd, krc_rcvhdrtailaddr,
i, 0);
qib_write_kreg_ctxt(dd, krc_rcvhdraddr, i, 0);
for (f = 0; f < NUM_TIDFLOWS_CTXT; f++)
qib_write_ureg(dd, ur_rcvflowtable + f,
TIDFLOW_ERRBITS, i);
}
}
}
spin_unlock_irqrestore(&dd->cspec->rcvmod_lock, flags);
}
/*
* Modify the SENDCTRL register in chip-specific way. This
* is a function where there are multiple such registers with
* slightly different layouts.
* The chip doesn't allow back-to-back sendctrl writes, so write
* the scratch register after writing sendctrl.
*
* Which register is written depends on the operation.
* Most operate on the common register, while
* SEND_ENB and SEND_DIS operate on the per-port ones.
* SEND_ENB is included in common because it can change SPCL_TRIG
*/
#define SENDCTRL_COMMON_MODS (\
QIB_SENDCTRL_CLEAR | \
QIB_SENDCTRL_AVAIL_DIS | \
QIB_SENDCTRL_AVAIL_ENB | \
QIB_SENDCTRL_AVAIL_BLIP | \
QIB_SENDCTRL_DISARM | \
QIB_SENDCTRL_DISARM_ALL | \
QIB_SENDCTRL_SEND_ENB)
#define SENDCTRL_PORT_MODS (\
QIB_SENDCTRL_CLEAR | \
QIB_SENDCTRL_SEND_ENB | \
QIB_SENDCTRL_SEND_DIS | \
QIB_SENDCTRL_FLUSH)
static void sendctrl_7322_mod(struct qib_pportdata *ppd, u32 op)
{
struct qib_devdata *dd = ppd->dd;
u64 tmp_dd_sendctrl;
unsigned long flags;
spin_lock_irqsave(&dd->sendctrl_lock, flags);
/* First the dd ones that are "sticky", saved in shadow */
if (op & QIB_SENDCTRL_CLEAR)
dd->sendctrl = 0;
if (op & QIB_SENDCTRL_AVAIL_DIS)
dd->sendctrl &= ~SYM_MASK(SendCtrl, SendBufAvailUpd);
else if (op & QIB_SENDCTRL_AVAIL_ENB) {
dd->sendctrl |= SYM_MASK(SendCtrl, SendBufAvailUpd);
if (dd->flags & QIB_USE_SPCL_TRIG)
dd->sendctrl |= SYM_MASK(SendCtrl, SpecialTriggerEn);
}
/* Then the ppd ones that are "sticky", saved in shadow */
if (op & QIB_SENDCTRL_SEND_DIS)
ppd->p_sendctrl &= ~SYM_MASK(SendCtrl_0, SendEnable);
else if (op & QIB_SENDCTRL_SEND_ENB)
ppd->p_sendctrl |= SYM_MASK(SendCtrl_0, SendEnable);
if (op & QIB_SENDCTRL_DISARM_ALL) {
u32 i, last;
tmp_dd_sendctrl = dd->sendctrl;
last = dd->piobcnt2k + dd->piobcnt4k + NUM_VL15_BUFS;
/*
* Disarm any buffers that are not yet launched,
* disabling updates until done.
*/
tmp_dd_sendctrl &= ~SYM_MASK(SendCtrl, SendBufAvailUpd);
for (i = 0; i < last; i++) {
qib_write_kreg(dd, kr_sendctrl,
tmp_dd_sendctrl |
SYM_MASK(SendCtrl, Disarm) | i);
qib_write_kreg(dd, kr_scratch, 0);
}
}
if (op & QIB_SENDCTRL_FLUSH) {
u64 tmp_ppd_sendctrl = ppd->p_sendctrl;
/*
* Now drain all the fifos. The Abort bit should never be
* needed, so for now, at least, we don't use it.
*/
tmp_ppd_sendctrl |=
SYM_MASK(SendCtrl_0, TxeDrainRmFifo) |
SYM_MASK(SendCtrl_0, TxeDrainLaFifo) |
SYM_MASK(SendCtrl_0, TxeBypassIbc);
qib_write_kreg_port(ppd, krp_sendctrl, tmp_ppd_sendctrl);
qib_write_kreg(dd, kr_scratch, 0);
}
tmp_dd_sendctrl = dd->sendctrl;
if (op & QIB_SENDCTRL_DISARM)
tmp_dd_sendctrl |= SYM_MASK(SendCtrl, Disarm) |
((op & QIB_7322_SendCtrl_DisarmSendBuf_RMASK) <<
SYM_LSB(SendCtrl, DisarmSendBuf));
if ((op & QIB_SENDCTRL_AVAIL_BLIP) &&
(dd->sendctrl & SYM_MASK(SendCtrl, SendBufAvailUpd)))
tmp_dd_sendctrl &= ~SYM_MASK(SendCtrl, SendBufAvailUpd);
if (op == 0 || (op & SENDCTRL_COMMON_MODS)) {
qib_write_kreg(dd, kr_sendctrl, tmp_dd_sendctrl);
qib_write_kreg(dd, kr_scratch, 0);
}
if (op == 0 || (op & SENDCTRL_PORT_MODS)) {
qib_write_kreg_port(ppd, krp_sendctrl, ppd->p_sendctrl);
qib_write_kreg(dd, kr_scratch, 0);
}
if (op & QIB_SENDCTRL_AVAIL_BLIP) {
qib_write_kreg(dd, kr_sendctrl, dd->sendctrl);
qib_write_kreg(dd, kr_scratch, 0);
}
spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
if (op & QIB_SENDCTRL_FLUSH) {
u32 v;
/*
* ensure writes have hit chip, then do a few
* more reads, to allow DMA of pioavail registers
* to occur, so in-memory copy is in sync with
* the chip. Not always safe to sleep.
*/
v = qib_read_kreg32(dd, kr_scratch);
qib_write_kreg(dd, kr_scratch, v);
v = qib_read_kreg32(dd, kr_scratch);
qib_write_kreg(dd, kr_scratch, v);
qib_read_kreg32(dd, kr_scratch);
}
}
#define _PORT_VIRT_FLAG 0x8000U /* "virtual", need adjustments */
#define _PORT_64BIT_FLAG 0x10000U /* not "virtual", but 64bit */
#define _PORT_CNTR_IDXMASK 0x7fffU /* mask off flags above */
/**
* qib_portcntr_7322 - read a per-port chip counter
* @ppd: the qlogic_ib pport
* @creg: the counter to read (not a chip offset)
*/
static u64 qib_portcntr_7322(struct qib_pportdata *ppd, u32 reg)
{
struct qib_devdata *dd = ppd->dd;
u64 ret = 0ULL;
u16 creg;
/* 0xffff for unimplemented or synthesized counters */
static const u32 xlator[] = {
[QIBPORTCNTR_PKTSEND] = crp_pktsend | _PORT_64BIT_FLAG,
[QIBPORTCNTR_WORDSEND] = crp_wordsend | _PORT_64BIT_FLAG,
[QIBPORTCNTR_PSXMITDATA] = crp_psxmitdatacount,
[QIBPORTCNTR_PSXMITPKTS] = crp_psxmitpktscount,
[QIBPORTCNTR_PSXMITWAIT] = crp_psxmitwaitcount,
[QIBPORTCNTR_SENDSTALL] = crp_sendstall,
[QIBPORTCNTR_PKTRCV] = crp_pktrcv | _PORT_64BIT_FLAG,
[QIBPORTCNTR_PSRCVDATA] = crp_psrcvdatacount,
[QIBPORTCNTR_PSRCVPKTS] = crp_psrcvpktscount,
[QIBPORTCNTR_RCVEBP] = crp_rcvebp,
[QIBPORTCNTR_RCVOVFL] = crp_rcvovfl,
[QIBPORTCNTR_WORDRCV] = crp_wordrcv | _PORT_64BIT_FLAG,
[QIBPORTCNTR_RXDROPPKT] = 0xffff, /* not needed for 7322 */
[QIBPORTCNTR_RXLOCALPHYERR] = crp_rxotherlocalphyerr,
[QIBPORTCNTR_RXVLERR] = crp_rxvlerr,
[QIBPORTCNTR_ERRICRC] = crp_erricrc,
[QIBPORTCNTR_ERRVCRC] = crp_errvcrc,
[QIBPORTCNTR_ERRLPCRC] = crp_errlpcrc,
[QIBPORTCNTR_BADFORMAT] = crp_badformat,
[QIBPORTCNTR_ERR_RLEN] = crp_err_rlen,
[QIBPORTCNTR_IBSYMBOLERR] = crp_ibsymbolerr,
[QIBPORTCNTR_INVALIDRLEN] = crp_invalidrlen,
[QIBPORTCNTR_UNSUPVL] = crp_txunsupvl,
[QIBPORTCNTR_EXCESSBUFOVFL] = crp_excessbufferovfl,
[QIBPORTCNTR_ERRLINK] = crp_errlink,
[QIBPORTCNTR_IBLINKDOWN] = crp_iblinkdown,
[QIBPORTCNTR_IBLINKERRRECOV] = crp_iblinkerrrecov,
[QIBPORTCNTR_LLI] = crp_locallinkintegrityerr,
[QIBPORTCNTR_VL15PKTDROP] = crp_vl15droppedpkt,
[QIBPORTCNTR_ERRPKEY] = crp_errpkey,
/*
* the next 3 aren't really counters, but were implemented
* as counters in older chips, so still get accessed as
* though they were counters from this code.
*/
[QIBPORTCNTR_PSINTERVAL] = krp_psinterval,
[QIBPORTCNTR_PSSTART] = krp_psstart,
[QIBPORTCNTR_PSSTAT] = krp_psstat,
/* pseudo-counter, summed for all ports */
[QIBPORTCNTR_KHDROVFL] = 0xffff,
};
if (reg >= ARRAY_SIZE(xlator)) {
qib_devinfo(ppd->dd->pcidev,
"Unimplemented portcounter %u\n", reg);
goto done;
}
creg = xlator[reg] & _PORT_CNTR_IDXMASK;
/* handle non-counters and special cases first */
if (reg == QIBPORTCNTR_KHDROVFL) {
int i;
/* sum over all kernel contexts (skip if mini_init) */
for (i = 0; dd->rcd && i < dd->first_user_ctxt; i++) {
struct qib_ctxtdata *rcd = dd->rcd[i];
if (!rcd || rcd->ppd != ppd)
continue;
ret += read_7322_creg32(dd, cr_base_egrovfl + i);
}
goto done;
} else if (reg == QIBPORTCNTR_RXDROPPKT) {
/*
* Used as part of the synthesis of port_rcv_errors
* in the verbs code for IBTA counters. Not needed for 7322,
* because all the errors are already counted by other cntrs.
*/
goto done;
} else if (reg == QIBPORTCNTR_PSINTERVAL ||
reg == QIBPORTCNTR_PSSTART || reg == QIBPORTCNTR_PSSTAT) {
/* were counters in older chips, now per-port kernel regs */
ret = qib_read_kreg_port(ppd, creg);
goto done;
}
/*
* Only fast increment counters are 64 bits; use 32 bit reads to
* avoid two independent reads when on Opteron.
*/
if (xlator[reg] & _PORT_64BIT_FLAG)
ret = read_7322_creg_port(ppd, creg);
else
ret = read_7322_creg32_port(ppd, creg);
if (creg == crp_ibsymbolerr) {
if (ppd->cpspec->ibdeltainprog)
ret -= ret - ppd->cpspec->ibsymsnap;
ret -= ppd->cpspec->ibsymdelta;
} else if (creg == crp_iblinkerrrecov) {
if (ppd->cpspec->ibdeltainprog)
ret -= ret - ppd->cpspec->iblnkerrsnap;
ret -= ppd->cpspec->iblnkerrdelta;
} else if (creg == crp_errlink)
ret -= ppd->cpspec->ibmalfdelta;
else if (creg == crp_iblinkdown)
ret += ppd->cpspec->iblnkdowndelta;
done:
return ret;
}
/*
* Device counter names (not port-specific), one line per stat,
* single string. Used by utilities like ipathstats to print the stats
* in a way which works for different versions of drivers, without changing
* the utility. Names need to be 12 chars or less (w/o newline), for proper
* display by utility.
* Non-error counters are first.
* Start of "error" conters is indicated by a leading "E " on the first
* "error" counter, and doesn't count in label length.
* The EgrOvfl list needs to be last so we truncate them at the configured
* context count for the device.
* cntr7322indices contains the corresponding register indices.
*/
static const char cntr7322names[] =
"Interrupts\n"
"HostBusStall\n"
"E RxTIDFull\n"
"RxTIDInvalid\n"
"RxTIDFloDrop\n" /* 7322 only */
"Ctxt0EgrOvfl\n"
"Ctxt1EgrOvfl\n"
"Ctxt2EgrOvfl\n"
"Ctxt3EgrOvfl\n"
"Ctxt4EgrOvfl\n"
"Ctxt5EgrOvfl\n"
"Ctxt6EgrOvfl\n"
"Ctxt7EgrOvfl\n"
"Ctxt8EgrOvfl\n"
"Ctxt9EgrOvfl\n"
"Ctx10EgrOvfl\n"
"Ctx11EgrOvfl\n"
"Ctx12EgrOvfl\n"
"Ctx13EgrOvfl\n"
"Ctx14EgrOvfl\n"
"Ctx15EgrOvfl\n"
"Ctx16EgrOvfl\n"
"Ctx17EgrOvfl\n"
;
static const u32 cntr7322indices[] = {
cr_lbint | _PORT_64BIT_FLAG,
cr_lbstall | _PORT_64BIT_FLAG,
cr_tidfull,
cr_tidinvalid,
cr_rxtidflowdrop,
cr_base_egrovfl + 0,
cr_base_egrovfl + 1,
cr_base_egrovfl + 2,
cr_base_egrovfl + 3,
cr_base_egrovfl + 4,
cr_base_egrovfl + 5,
cr_base_egrovfl + 6,
cr_base_egrovfl + 7,
cr_base_egrovfl + 8,
cr_base_egrovfl + 9,
cr_base_egrovfl + 10,
cr_base_egrovfl + 11,
cr_base_egrovfl + 12,
cr_base_egrovfl + 13,
cr_base_egrovfl + 14,
cr_base_egrovfl + 15,
cr_base_egrovfl + 16,
cr_base_egrovfl + 17,
};
/*
* same as cntr7322names and cntr7322indices, but for port-specific counters.
* portcntr7322indices is somewhat complicated by some registers needing
* adjustments of various kinds, and those are ORed with _PORT_VIRT_FLAG
*/
static const char portcntr7322names[] =
"TxPkt\n"
"TxFlowPkt\n"
"TxWords\n"
"RxPkt\n"
"RxFlowPkt\n"
"RxWords\n"
"TxFlowStall\n"
"TxDmaDesc\n" /* 7220 and 7322-only */
"E RxDlidFltr\n" /* 7220 and 7322-only */
"IBStatusChng\n"
"IBLinkDown\n"
"IBLnkRecov\n"
"IBRxLinkErr\n"
"IBSymbolErr\n"
"RxLLIErr\n"
"RxBadFormat\n"
"RxBadLen\n"
"RxBufOvrfl\n"
"RxEBP\n"
"RxFlowCtlErr\n"
"RxICRCerr\n"
"RxLPCRCerr\n"
"RxVCRCerr\n"
"RxInvalLen\n"
"RxInvalPKey\n"
"RxPktDropped\n"
"TxBadLength\n"
"TxDropped\n"
"TxInvalLen\n"
"TxUnderrun\n"
"TxUnsupVL\n"
"RxLclPhyErr\n" /* 7220 and 7322-only from here down */
"RxVL15Drop\n"
"RxVlErr\n"
"XcessBufOvfl\n"
"RxQPBadCtxt\n" /* 7322-only from here down */
"TXBadHeader\n"
;
static const u32 portcntr7322indices[] = {
QIBPORTCNTR_PKTSEND | _PORT_VIRT_FLAG,
crp_pktsendflow,
QIBPORTCNTR_WORDSEND | _PORT_VIRT_FLAG,
QIBPORTCNTR_PKTRCV | _PORT_VIRT_FLAG,
crp_pktrcvflowctrl,
QIBPORTCNTR_WORDRCV | _PORT_VIRT_FLAG,
QIBPORTCNTR_SENDSTALL | _PORT_VIRT_FLAG,
crp_txsdmadesc | _PORT_64BIT_FLAG,
crp_rxdlidfltr,
crp_ibstatuschange,
QIBPORTCNTR_IBLINKDOWN | _PORT_VIRT_FLAG,
QIBPORTCNTR_IBLINKERRRECOV | _PORT_VIRT_FLAG,
QIBPORTCNTR_ERRLINK | _PORT_VIRT_FLAG,
QIBPORTCNTR_IBSYMBOLERR | _PORT_VIRT_FLAG,
QIBPORTCNTR_LLI | _PORT_VIRT_FLAG,
QIBPORTCNTR_BADFORMAT | _PORT_VIRT_FLAG,
QIBPORTCNTR_ERR_RLEN | _PORT_VIRT_FLAG,
QIBPORTCNTR_RCVOVFL | _PORT_VIRT_FLAG,
QIBPORTCNTR_RCVEBP | _PORT_VIRT_FLAG,
crp_rcvflowctrlviol,
QIBPORTCNTR_ERRICRC | _PORT_VIRT_FLAG,
QIBPORTCNTR_ERRLPCRC | _PORT_VIRT_FLAG,
QIBPORTCNTR_ERRVCRC | _PORT_VIRT_FLAG,
QIBPORTCNTR_INVALIDRLEN | _PORT_VIRT_FLAG,
QIBPORTCNTR_ERRPKEY | _PORT_VIRT_FLAG,
QIBPORTCNTR_RXDROPPKT | _PORT_VIRT_FLAG,
crp_txminmaxlenerr,
crp_txdroppedpkt,
crp_txlenerr,
crp_txunderrun,
crp_txunsupvl,
QIBPORTCNTR_RXLOCALPHYERR | _PORT_VIRT_FLAG,
QIBPORTCNTR_VL15PKTDROP | _PORT_VIRT_FLAG,
QIBPORTCNTR_RXVLERR | _PORT_VIRT_FLAG,
QIBPORTCNTR_EXCESSBUFOVFL | _PORT_VIRT_FLAG,
crp_rxqpinvalidctxt,
crp_txhdrerr,
};
/* do all the setup to make the counter reads efficient later */
static void init_7322_cntrnames(struct qib_devdata *dd)
{
int i, j = 0;
char *s;
for (i = 0, s = (char *)cntr7322names; s && j <= dd->cfgctxts;
i++) {
/* we always have at least one counter before the egrovfl */
if (!j && !strncmp("Ctxt0EgrOvfl", s + 1, 12))
j = 1;
s = strchr(s + 1, '\n');
if (s && j)
j++;
}
dd->cspec->ncntrs = i;
if (!s)
/* full list; size is without terminating null */
dd->cspec->cntrnamelen = sizeof(cntr7322names) - 1;
else
dd->cspec->cntrnamelen = 1 + s - cntr7322names;
dd->cspec->cntrs = kmalloc(dd->cspec->ncntrs
* sizeof(u64), GFP_KERNEL);
if (!dd->cspec->cntrs)
qib_dev_err(dd, "Failed allocation for counters\n");
for (i = 0, s = (char *)portcntr7322names; s; i++)
s = strchr(s + 1, '\n');
dd->cspec->nportcntrs = i - 1;
dd->cspec->portcntrnamelen = sizeof(portcntr7322names) - 1;
for (i = 0; i < dd->num_pports; ++i) {
dd->pport[i].cpspec->portcntrs = kmalloc(dd->cspec->nportcntrs
* sizeof(u64), GFP_KERNEL);
if (!dd->pport[i].cpspec->portcntrs)
qib_dev_err(dd,
"Failed allocation for portcounters\n");
}
}
static u32 qib_read_7322cntrs(struct qib_devdata *dd, loff_t pos, char **namep,
u64 **cntrp)
{
u32 ret;
if (namep) {
ret = dd->cspec->cntrnamelen;
if (pos >= ret)
ret = 0; /* final read after getting everything */
else
*namep = (char *) cntr7322names;
} else {
u64 *cntr = dd->cspec->cntrs;
int i;
ret = dd->cspec->ncntrs * sizeof(u64);
if (!cntr || pos >= ret) {
/* everything read, or couldn't get memory */
ret = 0;
goto done;
}
*cntrp = cntr;
for (i = 0; i < dd->cspec->ncntrs; i++)
if (cntr7322indices[i] & _PORT_64BIT_FLAG)
*cntr++ = read_7322_creg(dd,
cntr7322indices[i] &
_PORT_CNTR_IDXMASK);
else
*cntr++ = read_7322_creg32(dd,
cntr7322indices[i]);
}
done:
return ret;
}
static u32 qib_read_7322portcntrs(struct qib_devdata *dd, loff_t pos, u32 port,
char **namep, u64 **cntrp)
{
u32 ret;
if (namep) {
ret = dd->cspec->portcntrnamelen;
if (pos >= ret)
ret = 0; /* final read after getting everything */
else
*namep = (char *)portcntr7322names;
} else {
struct qib_pportdata *ppd = &dd->pport[port];
u64 *cntr = ppd->cpspec->portcntrs;
int i;
ret = dd->cspec->nportcntrs * sizeof(u64);
if (!cntr || pos >= ret) {
/* everything read, or couldn't get memory */
ret = 0;
goto done;
}
*cntrp = cntr;
for (i = 0; i < dd->cspec->nportcntrs; i++) {
if (portcntr7322indices[i] & _PORT_VIRT_FLAG)
*cntr++ = qib_portcntr_7322(ppd,
portcntr7322indices[i] &
_PORT_CNTR_IDXMASK);
else if (portcntr7322indices[i] & _PORT_64BIT_FLAG)
*cntr++ = read_7322_creg_port(ppd,
portcntr7322indices[i] &
_PORT_CNTR_IDXMASK);
else
*cntr++ = read_7322_creg32_port(ppd,
portcntr7322indices[i]);
}
}
done:
return ret;
}
/**
* qib_get_7322_faststats - get word counters from chip before they overflow
* @opaque - contains a pointer to the qlogic_ib device qib_devdata
*
* VESTIGIAL IBA7322 has no "small fast counters", so the only
* real purpose of this function is to maintain the notion of
* "active time", which in turn is only logged into the eeprom,
* which we don;t have, yet, for 7322-based boards.
*
* called from add_timer
*/
static void qib_get_7322_faststats(unsigned long opaque)
{
struct qib_devdata *dd = (struct qib_devdata *) opaque;
struct qib_pportdata *ppd;
unsigned long flags;
u64 traffic_wds;
int pidx;
for (pidx = 0; pidx < dd->num_pports; ++pidx) {
ppd = dd->pport + pidx;
/*
* If port isn't enabled or not operational ports, or
* diags is running (can cause memory diags to fail)
* skip this port this time.
*/
if (!ppd->link_speed_supported || !(dd->flags & QIB_INITTED)
|| dd->diag_client)
continue;
/*
* Maintain an activity timer, based on traffic
* exceeding a threshold, so we need to check the word-counts
* even if they are 64-bit.
*/
traffic_wds = qib_portcntr_7322(ppd, QIBPORTCNTR_WORDRCV) +
qib_portcntr_7322(ppd, QIBPORTCNTR_WORDSEND);
spin_lock_irqsave(&ppd->dd->eep_st_lock, flags);
traffic_wds -= ppd->dd->traffic_wds;
ppd->dd->traffic_wds += traffic_wds;
spin_unlock_irqrestore(&ppd->dd->eep_st_lock, flags);
if (ppd->cpspec->qdr_dfe_on && (ppd->link_speed_active &
QIB_IB_QDR) &&
(ppd->lflags & (QIBL_LINKINIT | QIBL_LINKARMED |
QIBL_LINKACTIVE)) &&
ppd->cpspec->qdr_dfe_time &&
time_is_before_jiffies(ppd->cpspec->qdr_dfe_time)) {
ppd->cpspec->qdr_dfe_on = 0;
qib_write_kreg_port(ppd, krp_static_adapt_dis(2),
ppd->dd->cspec->r1 ?
QDR_STATIC_ADAPT_INIT_R1 :
QDR_STATIC_ADAPT_INIT);
force_h1(ppd);
}
}
mod_timer(&dd->stats_timer, jiffies + HZ * ACTIVITY_TIMER);
}
/*
* If we were using MSIx, try to fallback to INTx.
*/
static int qib_7322_intr_fallback(struct qib_devdata *dd)
{
if (!dd->cspec->num_msix_entries)
return 0; /* already using INTx */
qib_devinfo(dd->pcidev,
"MSIx interrupt not detected, trying INTx interrupts\n");
qib_7322_nomsix(dd);
qib_enable_intx(dd->pcidev);
qib_setup_7322_interrupt(dd, 0);
return 1;
}
/*
* Reset the XGXS (between serdes and IBC). Slightly less intrusive
* than resetting the IBC or external link state, and useful in some
* cases to cause some retraining. To do this right, we reset IBC
* as well, then return to previous state (which may be still in reset)
* NOTE: some callers of this "know" this writes the current value
* of cpspec->ibcctrl_a as part of it's operation, so if that changes,
* check all callers.
*/
static void qib_7322_mini_pcs_reset(struct qib_pportdata *ppd)
{
u64 val;
struct qib_devdata *dd = ppd->dd;
const u64 reset_bits = SYM_MASK(IBPCSConfig_0, xcv_rreset) |
SYM_MASK(IBPCSConfig_0, xcv_treset) |
SYM_MASK(IBPCSConfig_0, tx_rx_reset);
val = qib_read_kreg_port(ppd, krp_ib_pcsconfig);
qib_write_kreg(dd, kr_hwerrmask,
dd->cspec->hwerrmask & ~HWE_MASK(statusValidNoEop));
qib_write_kreg_port(ppd, krp_ibcctrl_a,
ppd->cpspec->ibcctrl_a &
~SYM_MASK(IBCCtrlA_0, IBLinkEn));
qib_write_kreg_port(ppd, krp_ib_pcsconfig, val | reset_bits);
qib_read_kreg32(dd, kr_scratch);
qib_write_kreg_port(ppd, krp_ib_pcsconfig, val & ~reset_bits);
qib_write_kreg_port(ppd, krp_ibcctrl_a, ppd->cpspec->ibcctrl_a);
qib_write_kreg(dd, kr_scratch, 0ULL);
qib_write_kreg(dd, kr_hwerrclear,
SYM_MASK(HwErrClear, statusValidNoEopClear));
qib_write_kreg(dd, kr_hwerrmask, dd->cspec->hwerrmask);
}
/*
* This code for non-IBTA-compliant IB speed negotiation is only known to
* work for the SDR to DDR transition, and only between an HCA and a switch
* with recent firmware. It is based on observed heuristics, rather than
* actual knowledge of the non-compliant speed negotiation.
* It has a number of hard-coded fields, since the hope is to rewrite this
* when a spec is available on how the negoation is intended to work.
*/
static void autoneg_7322_sendpkt(struct qib_pportdata *ppd, u32 *hdr,
u32 dcnt, u32 *data)
{
int i;
u64 pbc;
u32 __iomem *piobuf;
u32 pnum, control, len;
struct qib_devdata *dd = ppd->dd;
i = 0;
len = 7 + dcnt + 1; /* 7 dword header, dword data, icrc */
control = qib_7322_setpbc_control(ppd, len, 0, 15);
pbc = ((u64) control << 32) | len;
while (!(piobuf = qib_7322_getsendbuf(ppd, pbc, &pnum))) {
if (i++ > 15)
return;
udelay(2);
}
/* disable header check on this packet, since it can't be valid */
dd->f_txchk_change(dd, pnum, 1, TXCHK_CHG_TYPE_DIS1, NULL);
writeq(pbc, piobuf);
qib_flush_wc();
qib_pio_copy(piobuf + 2, hdr, 7);
qib_pio_copy(piobuf + 9, data, dcnt);
if (dd->flags & QIB_USE_SPCL_TRIG) {
u32 spcl_off = (pnum >= dd->piobcnt2k) ? 2047 : 1023;
qib_flush_wc();
__raw_writel(0xaebecede, piobuf + spcl_off);
}
qib_flush_wc();
qib_sendbuf_done(dd, pnum);
/* and re-enable hdr check */
dd->f_txchk_change(dd, pnum, 1, TXCHK_CHG_TYPE_ENAB1, NULL);
}
/*
* _start packet gets sent twice at start, _done gets sent twice at end
*/
static void qib_autoneg_7322_send(struct qib_pportdata *ppd, int which)
{
struct qib_devdata *dd = ppd->dd;
static u32 swapped;
u32 dw, i, hcnt, dcnt, *data;
static u32 hdr[7] = { 0xf002ffff, 0x48ffff, 0x6400abba };
static u32 madpayload_start[0x40] = {
0x1810103, 0x1, 0x0, 0x0, 0x2c90000, 0x2c9, 0x0, 0x0,
0xffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x1, 0x1388, 0x15e, 0x1, /* rest 0's */
};
static u32 madpayload_done[0x40] = {
0x1810103, 0x1, 0x0, 0x0, 0x2c90000, 0x2c9, 0x0, 0x0,
0xffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x40000001, 0x1388, 0x15e, /* rest 0's */
};
dcnt = ARRAY_SIZE(madpayload_start);
hcnt = ARRAY_SIZE(hdr);
if (!swapped) {
/* for maintainability, do it at runtime */
for (i = 0; i < hcnt; i++) {
dw = (__force u32) cpu_to_be32(hdr[i]);
hdr[i] = dw;
}
for (i = 0; i < dcnt; i++) {
dw = (__force u32) cpu_to_be32(madpayload_start[i]);
madpayload_start[i] = dw;
dw = (__force u32) cpu_to_be32(madpayload_done[i]);
madpayload_done[i] = dw;
}
swapped = 1;
}
data = which ? madpayload_done : madpayload_start;
autoneg_7322_sendpkt(ppd, hdr, dcnt, data);
qib_read_kreg64(dd, kr_scratch);
udelay(2);
autoneg_7322_sendpkt(ppd, hdr, dcnt, data);
qib_read_kreg64(dd, kr_scratch);
udelay(2);
}
/*
* Do the absolute minimum to cause an IB speed change, and make it
* ready, but don't actually trigger the change. The caller will
* do that when ready (if link is in Polling training state, it will
* happen immediately, otherwise when link next goes down)
*
* This routine should only be used as part of the DDR autonegotation
* code for devices that are not compliant with IB 1.2 (or code that
* fixes things up for same).
*
* When link has gone down, and autoneg enabled, or autoneg has
* failed and we give up until next time we set both speeds, and
* then we want IBTA enabled as well as "use max enabled speed.
*/
static void set_7322_ibspeed_fast(struct qib_pportdata *ppd, u32 speed)
{
u64 newctrlb;
newctrlb = ppd->cpspec->ibcctrl_b & ~(IBA7322_IBC_SPEED_MASK |
IBA7322_IBC_IBTA_1_2_MASK |
IBA7322_IBC_MAX_SPEED_MASK);
if (speed & (speed - 1)) /* multiple speeds */
newctrlb |= (speed << IBA7322_IBC_SPEED_LSB) |
IBA7322_IBC_IBTA_1_2_MASK |
IBA7322_IBC_MAX_SPEED_MASK;
else
newctrlb |= speed == QIB_IB_QDR ?
IBA7322_IBC_SPEED_QDR | IBA7322_IBC_IBTA_1_2_MASK :
((speed == QIB_IB_DDR ?
IBA7322_IBC_SPEED_DDR : IBA7322_IBC_SPEED_SDR));
if (newctrlb == ppd->cpspec->ibcctrl_b)
return;
ppd->cpspec->ibcctrl_b = newctrlb;
qib_write_kreg_port(ppd, krp_ibcctrl_b, ppd->cpspec->ibcctrl_b);
qib_write_kreg(ppd->dd, kr_scratch, 0);
}
/*
* This routine is only used when we are not talking to another
* IB 1.2-compliant device that we think can do DDR.
* (This includes all existing switch chips as of Oct 2007.)
* 1.2-compliant devices go directly to DDR prior to reaching INIT
*/
static void try_7322_autoneg(struct qib_pportdata *ppd)
{
unsigned long flags;
spin_lock_irqsave(&ppd->lflags_lock, flags);
ppd->lflags |= QIBL_IB_AUTONEG_INPROG;
spin_unlock_irqrestore(&ppd->lflags_lock, flags);
qib_autoneg_7322_send(ppd, 0);
set_7322_ibspeed_fast(ppd, QIB_IB_DDR);
qib_7322_mini_pcs_reset(ppd);
/* 2 msec is minimum length of a poll cycle */
queue_delayed_work(ib_wq, &ppd->cpspec->autoneg_work,
msecs_to_jiffies(2));
}
/*
* Handle the empirically determined mechanism for auto-negotiation
* of DDR speed with switches.
*/
static void autoneg_7322_work(struct work_struct *work)
{
struct qib_pportdata *ppd;
struct qib_devdata *dd;
u64 startms;
u32 i;
unsigned long flags;
ppd = container_of(work, struct qib_chippport_specific,
autoneg_work.work)->ppd;
dd = ppd->dd;
startms = jiffies_to_msecs(jiffies);
/*
* Busy wait for this first part, it should be at most a
* few hundred usec, since we scheduled ourselves for 2msec.
*/
for (i = 0; i < 25; i++) {
if (SYM_FIELD(ppd->lastibcstat, IBCStatusA_0, LinkState)
== IB_7322_LT_STATE_POLLQUIET) {
qib_set_linkstate(ppd, QIB_IB_LINKDOWN_DISABLE);
break;
}
udelay(100);
}
if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG))
goto done; /* we got there early or told to stop */
/* we expect this to timeout */
if (wait_event_timeout(ppd->cpspec->autoneg_wait,
!(ppd->lflags & QIBL_IB_AUTONEG_INPROG),
msecs_to_jiffies(90)))
goto done;
qib_7322_mini_pcs_reset(ppd);
/* we expect this to timeout */
if (wait_event_timeout(ppd->cpspec->autoneg_wait,
!(ppd->lflags & QIBL_IB_AUTONEG_INPROG),
msecs_to_jiffies(1700)))
goto done;
qib_7322_mini_pcs_reset(ppd);
set_7322_ibspeed_fast(ppd, QIB_IB_SDR);
/*
* Wait up to 250 msec for link to train and get to INIT at DDR;
* this should terminate early.
*/
wait_event_timeout(ppd->cpspec->autoneg_wait,
!(ppd->lflags & QIBL_IB_AUTONEG_INPROG),
msecs_to_jiffies(250));
done:
if (ppd->lflags & QIBL_IB_AUTONEG_INPROG) {
spin_lock_irqsave(&ppd->lflags_lock, flags);
ppd->lflags &= ~QIBL_IB_AUTONEG_INPROG;
if (ppd->cpspec->autoneg_tries == AUTONEG_TRIES) {
ppd->lflags |= QIBL_IB_AUTONEG_FAILED;
ppd->cpspec->autoneg_tries = 0;
}
spin_unlock_irqrestore(&ppd->lflags_lock, flags);
set_7322_ibspeed_fast(ppd, ppd->link_speed_enabled);
}
}
/*
* This routine is used to request IPG set in the QLogic switch.
* Only called if r1.
*/
static void try_7322_ipg(struct qib_pportdata *ppd)
{
struct qib_ibport *ibp = &ppd->ibport_data;
struct ib_mad_send_buf *send_buf;
struct ib_mad_agent *agent;
struct ib_smp *smp;
unsigned delay;
int ret;
agent = ibp->send_agent;
if (!agent)
goto retry;
send_buf = ib_create_send_mad(agent, 0, 0, 0, IB_MGMT_MAD_HDR,
IB_MGMT_MAD_DATA, GFP_ATOMIC,
IB_MGMT_BASE_VERSION);
if (IS_ERR(send_buf))
goto retry;
if (!ibp->smi_ah) {
struct ib_ah *ah;
ah = qib_create_qp0_ah(ibp, be16_to_cpu(IB_LID_PERMISSIVE));
if (IS_ERR(ah))
ret = PTR_ERR(ah);
else {
send_buf->ah = ah;
ibp->smi_ah = to_iah(ah);
ret = 0;
}
} else {
send_buf->ah = &ibp->smi_ah->ibah;
ret = 0;
}
smp = send_buf->mad;
smp->base_version = IB_MGMT_BASE_VERSION;
smp->mgmt_class = IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE;
smp->class_version = 1;
smp->method = IB_MGMT_METHOD_SEND;
smp->hop_cnt = 1;
smp->attr_id = QIB_VENDOR_IPG;
smp->attr_mod = 0;
if (!ret)
ret = ib_post_send_mad(send_buf, NULL);
if (ret)
ib_free_send_mad(send_buf);
retry:
delay = 2 << ppd->cpspec->ipg_tries;
queue_delayed_work(ib_wq, &ppd->cpspec->ipg_work,
msecs_to_jiffies(delay));
}
/*
* Timeout handler for setting IPG.
* Only called if r1.
*/
static void ipg_7322_work(struct work_struct *work)
{
struct qib_pportdata *ppd;
ppd = container_of(work, struct qib_chippport_specific,
ipg_work.work)->ppd;
if ((ppd->lflags & (QIBL_LINKINIT | QIBL_LINKARMED | QIBL_LINKACTIVE))
&& ++ppd->cpspec->ipg_tries <= 10)
try_7322_ipg(ppd);
}
static u32 qib_7322_iblink_state(u64 ibcs)
{
u32 state = (u32)SYM_FIELD(ibcs, IBCStatusA_0, LinkState);
switch (state) {
case IB_7322_L_STATE_INIT:
state = IB_PORT_INIT;
break;
case IB_7322_L_STATE_ARM:
state = IB_PORT_ARMED;
break;
case IB_7322_L_STATE_ACTIVE:
/* fall through */
case IB_7322_L_STATE_ACT_DEFER:
state = IB_PORT_ACTIVE;
break;
default: /* fall through */
case IB_7322_L_STATE_DOWN:
state = IB_PORT_DOWN;
break;
}
return state;
}
/* returns the IBTA port state, rather than the IBC link training state */
static u8 qib_7322_phys_portstate(u64 ibcs)
{
u8 state = (u8)SYM_FIELD(ibcs, IBCStatusA_0, LinkTrainingState);
return qib_7322_physportstate[state];
}
static int qib_7322_ib_updown(struct qib_pportdata *ppd, int ibup, u64 ibcs)
{
int ret = 0, symadj = 0;
unsigned long flags;
int mult;
spin_lock_irqsave(&ppd->lflags_lock, flags);
ppd->lflags &= ~QIBL_IB_FORCE_NOTIFY;
spin_unlock_irqrestore(&ppd->lflags_lock, flags);
/* Update our picture of width and speed from chip */
if (ibcs & SYM_MASK(IBCStatusA_0, LinkSpeedQDR)) {
ppd->link_speed_active = QIB_IB_QDR;
mult = 4;
} else if (ibcs & SYM_MASK(IBCStatusA_0, LinkSpeedActive)) {
ppd->link_speed_active = QIB_IB_DDR;
mult = 2;
} else {
ppd->link_speed_active = QIB_IB_SDR;
mult = 1;
}
if (ibcs & SYM_MASK(IBCStatusA_0, LinkWidthActive)) {
ppd->link_width_active = IB_WIDTH_4X;
mult *= 4;
} else
ppd->link_width_active = IB_WIDTH_1X;
ppd->delay_mult = ib_rate_to_delay[mult_to_ib_rate(mult)];
if (!ibup) {
u64 clr;
/* Link went down. */
/* do IPG MAD again after linkdown, even if last time failed */
ppd->cpspec->ipg_tries = 0;
clr = qib_read_kreg_port(ppd, krp_ibcstatus_b) &
(SYM_MASK(IBCStatusB_0, heartbeat_timed_out) |
SYM_MASK(IBCStatusB_0, heartbeat_crosstalk));
if (clr)
qib_write_kreg_port(ppd, krp_ibcstatus_b, clr);
if (!(ppd->lflags & (QIBL_IB_AUTONEG_FAILED |
QIBL_IB_AUTONEG_INPROG)))
set_7322_ibspeed_fast(ppd, ppd->link_speed_enabled);
if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG)) {
struct qib_qsfp_data *qd =
&ppd->cpspec->qsfp_data;
/* unlock the Tx settings, speed may change */
qib_write_kreg_port(ppd, krp_tx_deemph_override,
SYM_MASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
reset_tx_deemphasis_override));
qib_cancel_sends(ppd);
/* on link down, ensure sane pcs state */
qib_7322_mini_pcs_reset(ppd);
/* schedule the qsfp refresh which should turn the link
off */
if (ppd->dd->flags & QIB_HAS_QSFP) {
qd->t_insert = jiffies;
queue_work(ib_wq, &qd->work);
}
spin_lock_irqsave(&ppd->sdma_lock, flags);
if (__qib_sdma_running(ppd))
__qib_sdma_process_event(ppd,
qib_sdma_event_e70_go_idle);
spin_unlock_irqrestore(&ppd->sdma_lock, flags);
}
clr = read_7322_creg32_port(ppd, crp_iblinkdown);
if (clr == ppd->cpspec->iblnkdownsnap)
ppd->cpspec->iblnkdowndelta++;
} else {
if (qib_compat_ddr_negotiate &&
!(ppd->lflags & (QIBL_IB_AUTONEG_FAILED |
QIBL_IB_AUTONEG_INPROG)) &&
ppd->link_speed_active == QIB_IB_SDR &&
(ppd->link_speed_enabled & QIB_IB_DDR)
&& ppd->cpspec->autoneg_tries < AUTONEG_TRIES) {
/* we are SDR, and auto-negotiation enabled */
++ppd->cpspec->autoneg_tries;
if (!ppd->cpspec->ibdeltainprog) {
ppd->cpspec->ibdeltainprog = 1;
ppd->cpspec->ibsymdelta +=
read_7322_creg32_port(ppd,
crp_ibsymbolerr) -
ppd->cpspec->ibsymsnap;
ppd->cpspec->iblnkerrdelta +=
read_7322_creg32_port(ppd,
crp_iblinkerrrecov) -
ppd->cpspec->iblnkerrsnap;
}
try_7322_autoneg(ppd);
ret = 1; /* no other IB status change processing */
} else if ((ppd->lflags & QIBL_IB_AUTONEG_INPROG) &&
ppd->link_speed_active == QIB_IB_SDR) {
qib_autoneg_7322_send(ppd, 1);
set_7322_ibspeed_fast(ppd, QIB_IB_DDR);
qib_7322_mini_pcs_reset(ppd);
udelay(2);
ret = 1; /* no other IB status change processing */
} else if ((ppd->lflags & QIBL_IB_AUTONEG_INPROG) &&
(ppd->link_speed_active & QIB_IB_DDR)) {
spin_lock_irqsave(&ppd->lflags_lock, flags);
ppd->lflags &= ~(QIBL_IB_AUTONEG_INPROG |
QIBL_IB_AUTONEG_FAILED);
spin_unlock_irqrestore(&ppd->lflags_lock, flags);
ppd->cpspec->autoneg_tries = 0;
/* re-enable SDR, for next link down */
set_7322_ibspeed_fast(ppd, ppd->link_speed_enabled);
wake_up(&ppd->cpspec->autoneg_wait);
symadj = 1;
} else if (ppd->lflags & QIBL_IB_AUTONEG_FAILED) {
/*
* Clear autoneg failure flag, and do setup
* so we'll try next time link goes down and
* back to INIT (possibly connected to a
* different device).
*/
spin_lock_irqsave(&ppd->lflags_lock, flags);
ppd->lflags &= ~QIBL_IB_AUTONEG_FAILED;
spin_unlock_irqrestore(&ppd->lflags_lock, flags);
ppd->cpspec->ibcctrl_b |= IBA7322_IBC_IBTA_1_2_MASK;
symadj = 1;
}
if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG)) {
symadj = 1;
if (ppd->dd->cspec->r1 && ppd->cpspec->ipg_tries <= 10)
try_7322_ipg(ppd);
if (!ppd->cpspec->recovery_init)
setup_7322_link_recovery(ppd, 0);
ppd->cpspec->qdr_dfe_time = jiffies +
msecs_to_jiffies(QDR_DFE_DISABLE_DELAY);
}
ppd->cpspec->ibmalfusesnap = 0;
ppd->cpspec->ibmalfsnap = read_7322_creg32_port(ppd,
crp_errlink);
}
if (symadj) {
ppd->cpspec->iblnkdownsnap =
read_7322_creg32_port(ppd, crp_iblinkdown);
if (ppd->cpspec->ibdeltainprog) {
ppd->cpspec->ibdeltainprog = 0;
ppd->cpspec->ibsymdelta += read_7322_creg32_port(ppd,
crp_ibsymbolerr) - ppd->cpspec->ibsymsnap;
ppd->cpspec->iblnkerrdelta += read_7322_creg32_port(ppd,
crp_iblinkerrrecov) - ppd->cpspec->iblnkerrsnap;
}
} else if (!ibup && qib_compat_ddr_negotiate &&
!ppd->cpspec->ibdeltainprog &&
!(ppd->lflags & QIBL_IB_AUTONEG_INPROG)) {
ppd->cpspec->ibdeltainprog = 1;
ppd->cpspec->ibsymsnap = read_7322_creg32_port(ppd,
crp_ibsymbolerr);
ppd->cpspec->iblnkerrsnap = read_7322_creg32_port(ppd,
crp_iblinkerrrecov);
}
if (!ret)
qib_setup_7322_setextled(ppd, ibup);
return ret;
}
/*
* Does read/modify/write to appropriate registers to
* set output and direction bits selected by mask.
* these are in their canonical postions (e.g. lsb of
* dir will end up in D48 of extctrl on existing chips).
* returns contents of GP Inputs.
*/
static int gpio_7322_mod(struct qib_devdata *dd, u32 out, u32 dir, u32 mask)
{
u64 read_val, new_out;
unsigned long flags;
if (mask) {
/* some bits being written, lock access to GPIO */
dir &= mask;
out &= mask;
spin_lock_irqsave(&dd->cspec->gpio_lock, flags);
dd->cspec->extctrl &= ~((u64)mask << SYM_LSB(EXTCtrl, GPIOOe));
dd->cspec->extctrl |= ((u64) dir << SYM_LSB(EXTCtrl, GPIOOe));
new_out = (dd->cspec->gpio_out & ~mask) | out;
qib_write_kreg(dd, kr_extctrl, dd->cspec->extctrl);
qib_write_kreg(dd, kr_gpio_out, new_out);
dd->cspec->gpio_out = new_out;
spin_unlock_irqrestore(&dd->cspec->gpio_lock, flags);
}
/*
* It is unlikely that a read at this time would get valid
* data on a pin whose direction line was set in the same
* call to this function. We include the read here because
* that allows us to potentially combine a change on one pin with
* a read on another, and because the old code did something like
* this.
*/
read_val = qib_read_kreg64(dd, kr_extstatus);
return SYM_FIELD(read_val, EXTStatus, GPIOIn);
}
/* Enable writes to config EEPROM, if possible. Returns previous state */
static int qib_7322_eeprom_wen(struct qib_devdata *dd, int wen)
{
int prev_wen;
u32 mask;
mask = 1 << QIB_EEPROM_WEN_NUM;
prev_wen = ~gpio_7322_mod(dd, 0, 0, 0) >> QIB_EEPROM_WEN_NUM;
gpio_7322_mod(dd, wen ? 0 : mask, mask, mask);
return prev_wen & 1;
}
/*
* Read fundamental info we need to use the chip. These are
* the registers that describe chip capabilities, and are
* saved in shadow registers.
*/
static void get_7322_chip_params(struct qib_devdata *dd)
{
u64 val;
u32 piobufs;
int mtu;
dd->palign = qib_read_kreg32(dd, kr_pagealign);
dd->uregbase = qib_read_kreg32(dd, kr_userregbase);
dd->rcvtidcnt = qib_read_kreg32(dd, kr_rcvtidcnt);
dd->rcvtidbase = qib_read_kreg32(dd, kr_rcvtidbase);
dd->rcvegrbase = qib_read_kreg32(dd, kr_rcvegrbase);
dd->piobufbase = qib_read_kreg64(dd, kr_sendpiobufbase);
dd->pio2k_bufbase = dd->piobufbase & 0xffffffff;
val = qib_read_kreg64(dd, kr_sendpiobufcnt);
dd->piobcnt2k = val & ~0U;
dd->piobcnt4k = val >> 32;
val = qib_read_kreg64(dd, kr_sendpiosize);
dd->piosize2k = val & ~0U;
dd->piosize4k = val >> 32;
mtu = ib_mtu_enum_to_int(qib_ibmtu);
if (mtu == -1)
mtu = QIB_DEFAULT_MTU;
dd->pport[0].ibmtu = (u32)mtu;
dd->pport[1].ibmtu = (u32)mtu;
/* these may be adjusted in init_chip_wc_pat() */
dd->pio2kbase = (u32 __iomem *)
((char __iomem *) dd->kregbase + dd->pio2k_bufbase);
dd->pio4kbase = (u32 __iomem *)
((char __iomem *) dd->kregbase +
(dd->piobufbase >> 32));
/*
* 4K buffers take 2 pages; we use roundup just to be
* paranoid; we calculate it once here, rather than on
* ever buf allocate
*/
dd->align4k = ALIGN(dd->piosize4k, dd->palign);
piobufs = dd->piobcnt4k + dd->piobcnt2k + NUM_VL15_BUFS;
dd->pioavregs = ALIGN(piobufs, sizeof(u64) * BITS_PER_BYTE / 2) /
(sizeof(u64) * BITS_PER_BYTE / 2);
}
/*
* The chip base addresses in cspec and cpspec have to be set
* after possible init_chip_wc_pat(), rather than in
* get_7322_chip_params(), so split out as separate function
*/
static void qib_7322_set_baseaddrs(struct qib_devdata *dd)
{
u32 cregbase;
cregbase = qib_read_kreg32(dd, kr_counterregbase);
dd->cspec->cregbase = (u64 __iomem *)(cregbase +
(char __iomem *)dd->kregbase);
dd->egrtidbase = (u64 __iomem *)
((char __iomem *) dd->kregbase + dd->rcvegrbase);
/* port registers are defined as relative to base of chip */
dd->pport[0].cpspec->kpregbase =
(u64 __iomem *)((char __iomem *)dd->kregbase);
dd->pport[1].cpspec->kpregbase =
(u64 __iomem *)(dd->palign +
(char __iomem *)dd->kregbase);
dd->pport[0].cpspec->cpregbase =
(u64 __iomem *)(qib_read_kreg_port(&dd->pport[0],
kr_counterregbase) + (char __iomem *)dd->kregbase);
dd->pport[1].cpspec->cpregbase =
(u64 __iomem *)(qib_read_kreg_port(&dd->pport[1],
kr_counterregbase) + (char __iomem *)dd->kregbase);
}
/*
* This is a fairly special-purpose observer, so we only support
* the port-specific parts of SendCtrl
*/
#define SENDCTRL_SHADOWED (SYM_MASK(SendCtrl_0, SendEnable) | \
SYM_MASK(SendCtrl_0, SDmaEnable) | \
SYM_MASK(SendCtrl_0, SDmaIntEnable) | \
SYM_MASK(SendCtrl_0, SDmaSingleDescriptor) | \
SYM_MASK(SendCtrl_0, SDmaHalt) | \
SYM_MASK(SendCtrl_0, IBVLArbiterEn) | \
SYM_MASK(SendCtrl_0, ForceCreditUpToDate))
static int sendctrl_hook(struct qib_devdata *dd,
const struct diag_observer *op, u32 offs,
u64 *data, u64 mask, int only_32)
{
unsigned long flags;
unsigned idx;
unsigned pidx;
struct qib_pportdata *ppd = NULL;
u64 local_data, all_bits;
/*
* The fixed correspondence between Physical ports and pports is
* severed. We need to hunt for the ppd that corresponds
* to the offset we got. And we have to do that without admitting
* we know the stride, apparently.
*/
for (pidx = 0; pidx < dd->num_pports; ++pidx) {
u64 __iomem *psptr;
u32 psoffs;
ppd = dd->pport + pidx;
if (!ppd->cpspec->kpregbase)
continue;
psptr = ppd->cpspec->kpregbase + krp_sendctrl;
psoffs = (u32) (psptr - dd->kregbase) * sizeof(*psptr);
if (psoffs == offs)
break;
}
/* If pport is not being managed by driver, just avoid shadows. */
if (pidx >= dd->num_pports)
ppd = NULL;
/* In any case, "idx" is flat index in kreg space */
idx = offs / sizeof(u64);
all_bits = ~0ULL;
if (only_32)
all_bits >>= 32;
spin_lock_irqsave(&dd->sendctrl_lock, flags);
if (!ppd || (mask & all_bits) != all_bits) {
/*
* At least some mask bits are zero, so we need
* to read. The judgement call is whether from
* reg or shadow. First-cut: read reg, and complain
* if any bits which should be shadowed are different
* from their shadowed value.
*/
if (only_32)
local_data = (u64)qib_read_kreg32(dd, idx);
else
local_data = qib_read_kreg64(dd, idx);
*data = (local_data & ~mask) | (*data & mask);
}
if (mask) {
/*
* At least some mask bits are one, so we need
* to write, but only shadow some bits.
*/
u64 sval, tval; /* Shadowed, transient */
/*
* New shadow val is bits we don't want to touch,
* ORed with bits we do, that are intended for shadow.
*/
if (ppd) {
sval = ppd->p_sendctrl & ~mask;
sval |= *data & SENDCTRL_SHADOWED & mask;
ppd->p_sendctrl = sval;
} else
sval = *data & SENDCTRL_SHADOWED & mask;
tval = sval | (*data & ~SENDCTRL_SHADOWED & mask);
qib_write_kreg(dd, idx, tval);
qib_write_kreg(dd, kr_scratch, 0Ull);
}
spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
return only_32 ? 4 : 8;
}
static const struct diag_observer sendctrl_0_observer = {
sendctrl_hook, KREG_IDX(SendCtrl_0) * sizeof(u64),
KREG_IDX(SendCtrl_0) * sizeof(u64)
};
static const struct diag_observer sendctrl_1_observer = {
sendctrl_hook, KREG_IDX(SendCtrl_1) * sizeof(u64),
KREG_IDX(SendCtrl_1) * sizeof(u64)
};
static ushort sdma_fetch_prio = 8;
module_param_named(sdma_fetch_prio, sdma_fetch_prio, ushort, S_IRUGO);
MODULE_PARM_DESC(sdma_fetch_prio, "SDMA descriptor fetch priority");
/* Besides logging QSFP events, we set appropriate TxDDS values */
static void init_txdds_table(struct qib_pportdata *ppd, int override);
static void qsfp_7322_event(struct work_struct *work)
{
struct qib_qsfp_data *qd;
struct qib_pportdata *ppd;
unsigned long pwrup;
unsigned long flags;
int ret;
u32 le2;
qd = container_of(work, struct qib_qsfp_data, work);
ppd = qd->ppd;
pwrup = qd->t_insert +
msecs_to_jiffies(QSFP_PWR_LAG_MSEC - QSFP_MODPRS_LAG_MSEC);
/* Delay for 20 msecs to allow ModPrs resistor to setup */
mdelay(QSFP_MODPRS_LAG_MSEC);
if (!qib_qsfp_mod_present(ppd)) {
ppd->cpspec->qsfp_data.modpresent = 0;
/* Set the physical link to disabled */
qib_set_ib_7322_lstate(ppd, 0,
QLOGIC_IB_IBCC_LINKINITCMD_DISABLE);
spin_lock_irqsave(&ppd->lflags_lock, flags);
ppd->lflags &= ~QIBL_LINKV;
spin_unlock_irqrestore(&ppd->lflags_lock, flags);
} else {
/*
* Some QSFP's not only do not respond until the full power-up
* time, but may behave badly if we try. So hold off responding
* to insertion.
*/
while (1) {
if (time_is_before_jiffies(pwrup))
break;
msleep(20);
}
ret = qib_refresh_qsfp_cache(ppd, &qd->cache);
/*
* Need to change LE2 back to defaults if we couldn't
* read the cable type (to handle cable swaps), so do this
* even on failure to read cable information. We don't
* get here for QME, so IS_QME check not needed here.
*/
if (!ret && !ppd->dd->cspec->r1) {
if (QSFP_IS_ACTIVE_FAR(qd->cache.tech))
le2 = LE2_QME;
else if (qd->cache.atten[1] >= qib_long_atten &&
QSFP_IS_CU(qd->cache.tech))
le2 = LE2_5m;
else
le2 = LE2_DEFAULT;
} else
le2 = LE2_DEFAULT;
ibsd_wr_allchans(ppd, 13, (le2 << 7), BMASK(9, 7));
/*
* We always change parameteters, since we can choose
* values for cables without eeproms, and the cable may have
* changed from a cable with full or partial eeprom content
* to one with partial or no content.
*/
init_txdds_table(ppd, 0);
/* The physical link is being re-enabled only when the
* previous state was DISABLED and the VALID bit is not
* set. This should only happen when the cable has been
* physically pulled. */
if (!ppd->cpspec->qsfp_data.modpresent &&
(ppd->lflags & (QIBL_LINKV | QIBL_IB_LINK_DISABLED))) {
ppd->cpspec->qsfp_data.modpresent = 1;
qib_set_ib_7322_lstate(ppd, 0,
QLOGIC_IB_IBCC_LINKINITCMD_SLEEP);
spin_lock_irqsave(&ppd->lflags_lock, flags);
ppd->lflags |= QIBL_LINKV;
spin_unlock_irqrestore(&ppd->lflags_lock, flags);
}
}
}
/*
* There is little we can do but complain to the user if QSFP
* initialization fails.
*/
static void qib_init_7322_qsfp(struct qib_pportdata *ppd)
{
unsigned long flags;
struct qib_qsfp_data *qd = &ppd->cpspec->qsfp_data;
struct qib_devdata *dd = ppd->dd;
u64 mod_prs_bit = QSFP_GPIO_MOD_PRS_N;
mod_prs_bit <<= (QSFP_GPIO_PORT2_SHIFT * ppd->hw_pidx);
qd->ppd = ppd;
qib_qsfp_init(qd, qsfp_7322_event);
spin_lock_irqsave(&dd->cspec->gpio_lock, flags);
dd->cspec->extctrl |= (mod_prs_bit << SYM_LSB(EXTCtrl, GPIOInvert));
dd->cspec->gpio_mask |= mod_prs_bit;
qib_write_kreg(dd, kr_extctrl, dd->cspec->extctrl);
qib_write_kreg(dd, kr_gpio_mask, dd->cspec->gpio_mask);
spin_unlock_irqrestore(&dd->cspec->gpio_lock, flags);
}
/*
* called at device initialization time, and also if the txselect
* module parameter is changed. This is used for cables that don't
* have valid QSFP EEPROMs (not present, or attenuation is zero).
* We initialize to the default, then if there is a specific
* unit,port match, we use that (and set it immediately, for the
* current speed, if the link is at INIT or better).
* String format is "default# unit#,port#=# ... u,p=#", separators must
* be a SPACE character. A newline terminates. The u,p=# tuples may
* optionally have "u,p=#,#", where the final # is the H1 value
* The last specific match is used (actually, all are used, but last
* one is the one that winds up set); if none at all, fall back on default.
*/
static void set_no_qsfp_atten(struct qib_devdata *dd, int change)
{
char *nxt, *str;
u32 pidx, unit, port, deflt, h1;
unsigned long val;
int any = 0, seth1;
int txdds_size;
str = txselect_list;
/* default number is validated in setup_txselect() */
deflt = simple_strtoul(str, &nxt, 0);
for (pidx = 0; pidx < dd->num_pports; ++pidx)
dd->pport[pidx].cpspec->no_eep = deflt;
txdds_size = TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ;
if (IS_QME(dd) || IS_QMH(dd))
txdds_size += TXDDS_MFG_SZ;
while (*nxt && nxt[1]) {
str = ++nxt;
unit = simple_strtoul(str, &nxt, 0);
if (nxt == str || !*nxt || *nxt != ',') {
while (*nxt && *nxt++ != ' ') /* skip to next, if any */
;
continue;
}
str = ++nxt;
port = simple_strtoul(str, &nxt, 0);
if (nxt == str || *nxt != '=') {
while (*nxt && *nxt++ != ' ') /* skip to next, if any */
;
continue;
}
str = ++nxt;
val = simple_strtoul(str, &nxt, 0);
if (nxt == str) {
while (*nxt && *nxt++ != ' ') /* skip to next, if any */
;
continue;
}
if (val >= txdds_size)
continue;
seth1 = 0;
h1 = 0; /* gcc thinks it might be used uninitted */
if (*nxt == ',' && nxt[1]) {
str = ++nxt;
h1 = (u32)simple_strtoul(str, &nxt, 0);
if (nxt == str)
while (*nxt && *nxt++ != ' ') /* skip */
;
else
seth1 = 1;
}
for (pidx = 0; dd->unit == unit && pidx < dd->num_pports;
++pidx) {
struct qib_pportdata *ppd = &dd->pport[pidx];
if (ppd->port != port || !ppd->link_speed_supported)
continue;
ppd->cpspec->no_eep = val;
if (seth1)
ppd->cpspec->h1_val = h1;
/* now change the IBC and serdes, overriding generic */
init_txdds_table(ppd, 1);
/* Re-enable the physical state machine on mezz boards
* now that the correct settings have been set.
* QSFP boards are handles by the QSFP event handler */
if (IS_QMH(dd) || IS_QME(dd))
qib_set_ib_7322_lstate(ppd, 0,
QLOGIC_IB_IBCC_LINKINITCMD_SLEEP);
any++;
}
if (*nxt == '\n')
break; /* done */
}
if (change && !any) {
/* no specific setting, use the default.
* Change the IBC and serdes, but since it's
* general, don't override specific settings.
*/
for (pidx = 0; pidx < dd->num_pports; ++pidx)
if (dd->pport[pidx].link_speed_supported)
init_txdds_table(&dd->pport[pidx], 0);
}
}
/* handle the txselect parameter changing */
static int setup_txselect(const char *str, struct kernel_param *kp)
{
struct qib_devdata *dd;
unsigned long val;
char *n;
if (strlen(str) >= MAX_ATTEN_LEN) {
pr_info("txselect_values string too long\n");
return -ENOSPC;
}
val = simple_strtoul(str, &n, 0);
if (n == str || val >= (TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ +
TXDDS_MFG_SZ)) {
pr_info("txselect_values must start with a number < %d\n",
TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ + TXDDS_MFG_SZ);
return -EINVAL;
}
strcpy(txselect_list, str);
list_for_each_entry(dd, &qib_dev_list, list)
if (dd->deviceid == PCI_DEVICE_ID_QLOGIC_IB_7322)
set_no_qsfp_atten(dd, 1);
return 0;
}
/*
* Write the final few registers that depend on some of the
* init setup. Done late in init, just before bringing up
* the serdes.
*/
static int qib_late_7322_initreg(struct qib_devdata *dd)
{
int ret = 0, n;
u64 val;
qib_write_kreg(dd, kr_rcvhdrentsize, dd->rcvhdrentsize);
qib_write_kreg(dd, kr_rcvhdrsize, dd->rcvhdrsize);
qib_write_kreg(dd, kr_rcvhdrcnt, dd->rcvhdrcnt);
qib_write_kreg(dd, kr_sendpioavailaddr, dd->pioavailregs_phys);
val = qib_read_kreg64(dd, kr_sendpioavailaddr);
if (val != dd->pioavailregs_phys) {
qib_dev_err(dd,
"Catastrophic software error, SendPIOAvailAddr written as %lx, read back as %llx\n",
(unsigned long) dd->pioavailregs_phys,
(unsigned long long) val);
ret = -EINVAL;
}
n = dd->piobcnt2k + dd->piobcnt4k + NUM_VL15_BUFS;
qib_7322_txchk_change(dd, 0, n, TXCHK_CHG_TYPE_KERN, NULL);
/* driver sends get pkey, lid, etc. checking also, to catch bugs */
qib_7322_txchk_change(dd, 0, n, TXCHK_CHG_TYPE_ENAB1, NULL);
qib_register_observer(dd, &sendctrl_0_observer);
qib_register_observer(dd, &sendctrl_1_observer);
dd->control &= ~QLOGIC_IB_C_SDMAFETCHPRIOEN;
qib_write_kreg(dd, kr_control, dd->control);
/*
* Set SendDmaFetchPriority and init Tx params, including
* QSFP handler on boards that have QSFP.
* First set our default attenuation entry for cables that
* don't have valid attenuation.
*/
set_no_qsfp_atten(dd, 0);
for (n = 0; n < dd->num_pports; ++n) {
struct qib_pportdata *ppd = dd->pport + n;
qib_write_kreg_port(ppd, krp_senddmaprioritythld,
sdma_fetch_prio & 0xf);
/* Initialize qsfp if present on board. */
if (dd->flags & QIB_HAS_QSFP)
qib_init_7322_qsfp(ppd);
}
dd->control |= QLOGIC_IB_C_SDMAFETCHPRIOEN;
qib_write_kreg(dd, kr_control, dd->control);
return ret;
}
/* per IB port errors. */
#define SENDCTRL_PIBP (MASK_ACROSS(0, 1) | MASK_ACROSS(3, 3) | \
MASK_ACROSS(8, 15))
#define RCVCTRL_PIBP (MASK_ACROSS(0, 17) | MASK_ACROSS(39, 41))
#define ERRS_PIBP (MASK_ACROSS(57, 58) | MASK_ACROSS(54, 54) | \
MASK_ACROSS(36, 49) | MASK_ACROSS(29, 34) | MASK_ACROSS(14, 17) | \
MASK_ACROSS(0, 11))
/*
* Write the initialization per-port registers that need to be done at
* driver load and after reset completes (i.e., that aren't done as part
* of other init procedures called from qib_init.c).
* Some of these should be redundant on reset, but play safe.
*/
static void write_7322_init_portregs(struct qib_pportdata *ppd)
{
u64 val;
int i;
if (!ppd->link_speed_supported) {
/* no buffer credits for this port */
for (i = 1; i < 8; i++)
qib_write_kreg_port(ppd, krp_rxcreditvl0 + i, 0);
qib_write_kreg_port(ppd, krp_ibcctrl_b, 0);
qib_write_kreg(ppd->dd, kr_scratch, 0);
return;
}
/*
* Set the number of supported virtual lanes in IBC,
* for flow control packet handling on unsupported VLs
*/
val = qib_read_kreg_port(ppd, krp_ibsdtestiftx);
val &= ~SYM_MASK(IB_SDTEST_IF_TX_0, VL_CAP);
val |= (u64)(ppd->vls_supported - 1) <<
SYM_LSB(IB_SDTEST_IF_TX_0, VL_CAP);
qib_write_kreg_port(ppd, krp_ibsdtestiftx, val);
qib_write_kreg_port(ppd, krp_rcvbthqp, QIB_KD_QP);
/* enable tx header checking */
qib_write_kreg_port(ppd, krp_sendcheckcontrol, IBA7322_SENDCHK_PKEY |
IBA7322_SENDCHK_BTHQP | IBA7322_SENDCHK_SLID |
IBA7322_SENDCHK_RAW_IPV6 | IBA7322_SENDCHK_MINSZ);
qib_write_kreg_port(ppd, krp_ncmodectrl,
SYM_MASK(IBNCModeCtrl_0, ScrambleCapLocal));
/*
* Unconditionally clear the bufmask bits. If SDMA is
* enabled, we'll set them appropriately later.
*/
qib_write_kreg_port(ppd, krp_senddmabufmask0, 0);
qib_write_kreg_port(ppd, krp_senddmabufmask1, 0);
qib_write_kreg_port(ppd, krp_senddmabufmask2, 0);
if (ppd->dd->cspec->r1)
ppd->p_sendctrl |= SYM_MASK(SendCtrl_0, ForceCreditUpToDate);
}
/*
* Write the initialization per-device registers that need to be done at
* driver load and after reset completes (i.e., that aren't done as part
* of other init procedures called from qib_init.c). Also write per-port
* registers that are affected by overall device config, such as QP mapping
* Some of these should be redundant on reset, but play safe.
*/
static void write_7322_initregs(struct qib_devdata *dd)
{
struct qib_pportdata *ppd;
int i, pidx;
u64 val;
/* Set Multicast QPs received by port 2 to map to context one. */
qib_write_kreg(dd, KREG_IDX(RcvQPMulticastContext_1), 1);
for (pidx = 0; pidx < dd->num_pports; ++pidx) {
unsigned n, regno;
unsigned long flags;
if (dd->n_krcv_queues < 2 ||
!dd->pport[pidx].link_speed_supported)
continue;
ppd = &dd->pport[pidx];
/* be paranoid against later code motion, etc. */
spin_lock_irqsave(&dd->cspec->rcvmod_lock, flags);
ppd->p_rcvctrl |= SYM_MASK(RcvCtrl_0, RcvQPMapEnable);
spin_unlock_irqrestore(&dd->cspec->rcvmod_lock, flags);
/* Initialize QP to context mapping */
regno = krp_rcvqpmaptable;
val = 0;
if (dd->num_pports > 1)
n = dd->first_user_ctxt / dd->num_pports;
else
n = dd->first_user_ctxt - 1;
for (i = 0; i < 32; ) {
unsigned ctxt;
if (dd->num_pports > 1)
ctxt = (i % n) * dd->num_pports + pidx;
else if (i % n)
ctxt = (i % n) + 1;
else
ctxt = ppd->hw_pidx;
val |= ctxt << (5 * (i % 6));
i++;
if (i % 6 == 0) {
qib_write_kreg_port(ppd, regno, val);
val = 0;
regno++;
}
}
qib_write_kreg_port(ppd, regno, val);
}
/*
* Setup up interrupt mitigation for kernel contexts, but
* not user contexts (user contexts use interrupts when
* stalled waiting for any packet, so want those interrupts
* right away).
*/
for (i = 0; i < dd->first_user_ctxt; i++) {
dd->cspec->rcvavail_timeout[i] = rcv_int_timeout;
qib_write_kreg(dd, kr_rcvavailtimeout + i, rcv_int_timeout);
}
/*
* Initialize as (disabled) rcvflow tables. Application code
* will setup each flow as it uses the flow.
* Doesn't clear any of the error bits that might be set.
*/
val = TIDFLOW_ERRBITS; /* these are W1C */
for (i = 0; i < dd->cfgctxts; i++) {
int flow;
for (flow = 0; flow < NUM_TIDFLOWS_CTXT; flow++)
qib_write_ureg(dd, ur_rcvflowtable+flow, val, i);
}
/*
* dual cards init to dual port recovery, single port cards to
* the one port. Dual port cards may later adjust to 1 port,
* and then back to dual port if both ports are connected
* */
if (dd->num_pports)
setup_7322_link_recovery(dd->pport, dd->num_pports > 1);
}
static int qib_init_7322_variables(struct qib_devdata *dd)
{
struct qib_pportdata *ppd;
unsigned features, pidx, sbufcnt;
int ret, mtu;
u32 sbufs, updthresh;
resource_size_t vl15off;
/* pport structs are contiguous, allocated after devdata */
ppd = (struct qib_pportdata *)(dd + 1);
dd->pport = ppd;
ppd[0].dd = dd;
ppd[1].dd = dd;
dd->cspec = (struct qib_chip_specific *)(ppd + 2);
ppd[0].cpspec = (struct qib_chippport_specific *)(dd->cspec + 1);
ppd[1].cpspec = &ppd[0].cpspec[1];
ppd[0].cpspec->ppd = &ppd[0]; /* for autoneg_7322_work() */
ppd[1].cpspec->ppd = &ppd[1]; /* for autoneg_7322_work() */
spin_lock_init(&dd->cspec->rcvmod_lock);
spin_lock_init(&dd->cspec->gpio_lock);
/* we haven't yet set QIB_PRESENT, so use read directly */
dd->revision = readq(&dd->kregbase[kr_revision]);
if ((dd->revision & 0xffffffffU) == 0xffffffffU) {
qib_dev_err(dd,
"Revision register read failure, giving up initialization\n");
ret = -ENODEV;
goto bail;
}
dd->flags |= QIB_PRESENT; /* now register routines work */
dd->majrev = (u8) SYM_FIELD(dd->revision, Revision_R, ChipRevMajor);
dd->minrev = (u8) SYM_FIELD(dd->revision, Revision_R, ChipRevMinor);
dd->cspec->r1 = dd->minrev == 1;
get_7322_chip_params(dd);
features = qib_7322_boardname(dd);
/* now that piobcnt2k and 4k set, we can allocate these */
sbufcnt = dd->piobcnt2k + dd->piobcnt4k +
NUM_VL15_BUFS + BITS_PER_LONG - 1;
sbufcnt /= BITS_PER_LONG;
dd->cspec->sendchkenable = kmalloc(sbufcnt *
sizeof(*dd->cspec->sendchkenable), GFP_KERNEL);
dd->cspec->sendgrhchk = kmalloc(sbufcnt *
sizeof(*dd->cspec->sendgrhchk), GFP_KERNEL);
dd->cspec->sendibchk = kmalloc(sbufcnt *
sizeof(*dd->cspec->sendibchk), GFP_KERNEL);
if (!dd->cspec->sendchkenable || !dd->cspec->sendgrhchk ||
!dd->cspec->sendibchk) {
qib_dev_err(dd, "Failed allocation for hdrchk bitmaps\n");
ret = -ENOMEM;
goto bail;
}
ppd = dd->pport;
/*
* GPIO bits for TWSI data and clock,
* used for serial EEPROM.
*/
dd->gpio_sda_num = _QIB_GPIO_SDA_NUM;
dd->gpio_scl_num = _QIB_GPIO_SCL_NUM;
dd->twsi_eeprom_dev = QIB_TWSI_EEPROM_DEV;
dd->flags |= QIB_HAS_INTX | QIB_HAS_LINK_LATENCY |
QIB_NODMA_RTAIL | QIB_HAS_VLSUPP | QIB_HAS_HDRSUPP |
QIB_HAS_THRESH_UPDATE |
(sdma_idle_cnt ? QIB_HAS_SDMA_TIMEOUT : 0);
dd->flags |= qib_special_trigger ?
QIB_USE_SPCL_TRIG : QIB_HAS_SEND_DMA;
/*
* Setup initial values. These may change when PAT is enabled, but
* we need these to do initial chip register accesses.
*/
qib_7322_set_baseaddrs(dd);
mtu = ib_mtu_enum_to_int(qib_ibmtu);
if (mtu == -1)
mtu = QIB_DEFAULT_MTU;
dd->cspec->int_enable_mask = QIB_I_BITSEXTANT;
/* all hwerrors become interrupts, unless special purposed */
dd->cspec->hwerrmask = ~0ULL;
/* link_recovery setup causes these errors, so ignore them,
* other than clearing them when they occur */
dd->cspec->hwerrmask &=
~(SYM_MASK(HwErrMask, IBSerdesPClkNotDetectMask_0) |
SYM_MASK(HwErrMask, IBSerdesPClkNotDetectMask_1) |
HWE_MASK(LATriggered));
for (pidx = 0; pidx < NUM_IB_PORTS; ++pidx) {
struct qib_chippport_specific *cp = ppd->cpspec;
ppd->link_speed_supported = features & PORT_SPD_CAP;
features >>= PORT_SPD_CAP_SHIFT;
if (!ppd->link_speed_supported) {
/* single port mode (7340, or configured) */
dd->skip_kctxt_mask |= 1 << pidx;
if (pidx == 0) {
/* Make sure port is disabled. */
qib_write_kreg_port(ppd, krp_rcvctrl, 0);
qib_write_kreg_port(ppd, krp_ibcctrl_a, 0);
ppd[0] = ppd[1];
dd->cspec->hwerrmask &= ~(SYM_MASK(HwErrMask,
IBSerdesPClkNotDetectMask_0)
| SYM_MASK(HwErrMask,
SDmaMemReadErrMask_0));
dd->cspec->int_enable_mask &= ~(
SYM_MASK(IntMask, SDmaCleanupDoneMask_0) |
SYM_MASK(IntMask, SDmaIdleIntMask_0) |
SYM_MASK(IntMask, SDmaProgressIntMask_0) |
SYM_MASK(IntMask, SDmaIntMask_0) |
SYM_MASK(IntMask, ErrIntMask_0) |
SYM_MASK(IntMask, SendDoneIntMask_0));
} else {
/* Make sure port is disabled. */
qib_write_kreg_port(ppd, krp_rcvctrl, 0);
qib_write_kreg_port(ppd, krp_ibcctrl_a, 0);
dd->cspec->hwerrmask &= ~(SYM_MASK(HwErrMask,
IBSerdesPClkNotDetectMask_1)
| SYM_MASK(HwErrMask,
SDmaMemReadErrMask_1));
dd->cspec->int_enable_mask &= ~(
SYM_MASK(IntMask, SDmaCleanupDoneMask_1) |
SYM_MASK(IntMask, SDmaIdleIntMask_1) |
SYM_MASK(IntMask, SDmaProgressIntMask_1) |
SYM_MASK(IntMask, SDmaIntMask_1) |
SYM_MASK(IntMask, ErrIntMask_1) |
SYM_MASK(IntMask, SendDoneIntMask_1));
}
continue;
}
dd->num_pports++;
ret = qib_init_pportdata(ppd, dd, pidx, dd->num_pports);
if (ret) {
dd->num_pports--;
goto bail;
}
ppd->link_width_supported = IB_WIDTH_1X | IB_WIDTH_4X;
ppd->link_width_enabled = IB_WIDTH_4X;
ppd->link_speed_enabled = ppd->link_speed_supported;
/*
* Set the initial values to reasonable default, will be set
* for real when link is up.
*/
ppd->link_width_active = IB_WIDTH_4X;
ppd->link_speed_active = QIB_IB_SDR;
ppd->delay_mult = ib_rate_to_delay[IB_RATE_10_GBPS];
switch (qib_num_cfg_vls) {
case 1:
ppd->vls_supported = IB_VL_VL0;
break;
case 2:
ppd->vls_supported = IB_VL_VL0_1;
break;
default:
qib_devinfo(dd->pcidev,
"Invalid num_vls %u, using 4 VLs\n",
qib_num_cfg_vls);
qib_num_cfg_vls = 4;
/* fall through */
case 4:
ppd->vls_supported = IB_VL_VL0_3;
break;
case 8:
if (mtu <= 2048)
ppd->vls_supported = IB_VL_VL0_7;
else {
qib_devinfo(dd->pcidev,
"Invalid num_vls %u for MTU %d , using 4 VLs\n",
qib_num_cfg_vls, mtu);
ppd->vls_supported = IB_VL_VL0_3;
qib_num_cfg_vls = 4;
}
break;
}
ppd->vls_operational = ppd->vls_supported;
init_waitqueue_head(&cp->autoneg_wait);
INIT_DELAYED_WORK(&cp->autoneg_work,
autoneg_7322_work);
if (ppd->dd->cspec->r1)
INIT_DELAYED_WORK(&cp->ipg_work, ipg_7322_work);
/*
* For Mez and similar cards, no qsfp info, so do
* the "cable info" setup here. Can be overridden
* in adapter-specific routines.
*/
if (!(dd->flags & QIB_HAS_QSFP)) {
if (!IS_QMH(dd) && !IS_QME(dd))
qib_devinfo(dd->pcidev,
"IB%u:%u: Unknown mezzanine card type\n",
dd->unit, ppd->port);
cp->h1_val = IS_QMH(dd) ? H1_FORCE_QMH : H1_FORCE_QME;
/*
* Choose center value as default tx serdes setting
* until changed through module parameter.
*/
ppd->cpspec->no_eep = IS_QMH(dd) ?
TXDDS_TABLE_SZ + 2 : TXDDS_TABLE_SZ + 4;
} else
cp->h1_val = H1_FORCE_VAL;
/* Avoid writes to chip for mini_init */
if (!qib_mini_init)
write_7322_init_portregs(ppd);
init_timer(&cp->chase_timer);
cp->chase_timer.function = reenable_chase;
cp->chase_timer.data = (unsigned long)ppd;
ppd++;
}
dd->rcvhdrentsize = qib_rcvhdrentsize ?
qib_rcvhdrentsize : QIB_RCVHDR_ENTSIZE;
dd->rcvhdrsize = qib_rcvhdrsize ?
qib_rcvhdrsize : QIB_DFLT_RCVHDRSIZE;
dd->rhf_offset = dd->rcvhdrentsize - sizeof(u64) / sizeof(u32);
/* we always allocate at least 2048 bytes for eager buffers */
dd->rcvegrbufsize = max(mtu, 2048);
BUG_ON(!is_power_of_2(dd->rcvegrbufsize));
dd->rcvegrbufsize_shift = ilog2(dd->rcvegrbufsize);
qib_7322_tidtemplate(dd);
/*
* We can request a receive interrupt for 1 or
* more packets from current offset.
*/
dd->rhdrhead_intr_off =
(u64) rcv_int_count << IBA7322_HDRHEAD_PKTINT_SHIFT;
/* setup the stats timer; the add_timer is done at end of init */
init_timer(&dd->stats_timer);
dd->stats_timer.function = qib_get_7322_faststats;
dd->stats_timer.data = (unsigned long) dd;
dd->ureg_align = 0x10000; /* 64KB alignment */
dd->piosize2kmax_dwords = dd->piosize2k >> 2;
qib_7322_config_ctxts(dd);
qib_set_ctxtcnt(dd);
/*
* We do not set WC on the VL15 buffers to avoid
* a rare problem with unaligned writes from
* interrupt-flushed store buffers, so we need
* to map those separately here. We can't solve
* this for the rarely used mtrr case.
*/
ret = init_chip_wc_pat(dd, 0);
if (ret)
goto bail;
/* vl15 buffers start just after the 4k buffers */
vl15off = dd->physaddr + (dd->piobufbase >> 32) +
dd->piobcnt4k * dd->align4k;
dd->piovl15base = ioremap_nocache(vl15off,
NUM_VL15_BUFS * dd->align4k);
if (!dd->piovl15base) {
ret = -ENOMEM;
goto bail;
}
qib_7322_set_baseaddrs(dd); /* set chip access pointers now */
ret = 0;
if (qib_mini_init)
goto bail;
if (!dd->num_pports) {
qib_dev_err(dd, "No ports enabled, giving up initialization\n");
goto bail; /* no error, so can still figure out why err */
}
write_7322_initregs(dd);
ret = qib_create_ctxts(dd);
init_7322_cntrnames(dd);
updthresh = 8U; /* update threshold */
/* use all of 4KB buffers for the kernel SDMA, zero if !SDMA.
* reserve the update threshold amount for other kernel use, such
* as sending SMI, MAD, and ACKs, or 3, whichever is greater,
* unless we aren't enabling SDMA, in which case we want to use
* all the 4k bufs for the kernel.
* if this was less than the update threshold, we could wait
* a long time for an update. Coded this way because we
* sometimes change the update threshold for various reasons,
* and we want this to remain robust.
*/
if (dd->flags & QIB_HAS_SEND_DMA) {
dd->cspec->sdmabufcnt = dd->piobcnt4k;
sbufs = updthresh > 3 ? updthresh : 3;
} else {
dd->cspec->sdmabufcnt = 0;
sbufs = dd->piobcnt4k;
}
dd->cspec->lastbuf_for_pio = dd->piobcnt2k + dd->piobcnt4k -
dd->cspec->sdmabufcnt;
dd->lastctxt_piobuf = dd->cspec->lastbuf_for_pio - sbufs;
dd->cspec->lastbuf_for_pio--; /* range is <= , not < */
dd->last_pio = dd->cspec->lastbuf_for_pio;
dd->pbufsctxt = (dd->cfgctxts > dd->first_user_ctxt) ?
dd->lastctxt_piobuf / (dd->cfgctxts - dd->first_user_ctxt) : 0;
/*
* If we have 16 user contexts, we will have 7 sbufs
* per context, so reduce the update threshold to match. We
* want to update before we actually run out, at low pbufs/ctxt
* so give ourselves some margin.
*/
if (dd->pbufsctxt >= 2 && dd->pbufsctxt - 2 < updthresh)
updthresh = dd->pbufsctxt - 2;
dd->cspec->updthresh_dflt = updthresh;
dd->cspec->updthresh = updthresh;
/* before full enable, no interrupts, no locking needed */
dd->sendctrl |= ((updthresh & SYM_RMASK(SendCtrl, AvailUpdThld))
<< SYM_LSB(SendCtrl, AvailUpdThld)) |
SYM_MASK(SendCtrl, SendBufAvailPad64Byte);
dd->psxmitwait_supported = 1;
dd->psxmitwait_check_rate = QIB_7322_PSXMITWAIT_CHECK_RATE;
bail:
if (!dd->ctxtcnt)
dd->ctxtcnt = 1; /* for other initialization code */
return ret;
}
static u32 __iomem *qib_7322_getsendbuf(struct qib_pportdata *ppd, u64 pbc,
u32 *pbufnum)
{
u32 first, last, plen = pbc & QIB_PBC_LENGTH_MASK;
struct qib_devdata *dd = ppd->dd;
/* last is same for 2k and 4k, because we use 4k if all 2k busy */
if (pbc & PBC_7322_VL15_SEND) {
first = dd->piobcnt2k + dd->piobcnt4k + ppd->hw_pidx;
last = first;
} else {
if ((plen + 1) > dd->piosize2kmax_dwords)
first = dd->piobcnt2k;
else
first = 0;
last = dd->cspec->lastbuf_for_pio;
}
return qib_getsendbuf_range(dd, pbufnum, first, last);
}
static void qib_set_cntr_7322_sample(struct qib_pportdata *ppd, u32 intv,
u32 start)
{
qib_write_kreg_port(ppd, krp_psinterval, intv);
qib_write_kreg_port(ppd, krp_psstart, start);
}
/*
* Must be called with sdma_lock held, or before init finished.
*/
static void qib_sdma_set_7322_desc_cnt(struct qib_pportdata *ppd, unsigned cnt)
{
qib_write_kreg_port(ppd, krp_senddmadesccnt, cnt);
}
/*
* sdma_lock should be acquired before calling this routine
*/
static void dump_sdma_7322_state(struct qib_pportdata *ppd)
{
u64 reg, reg1, reg2;
reg = qib_read_kreg_port(ppd, krp_senddmastatus);
qib_dev_porterr(ppd->dd, ppd->port,
"SDMA senddmastatus: 0x%016llx\n", reg);
reg = qib_read_kreg_port(ppd, krp_sendctrl);
qib_dev_porterr(ppd->dd, ppd->port,
"SDMA sendctrl: 0x%016llx\n", reg);
reg = qib_read_kreg_port(ppd, krp_senddmabase);
qib_dev_porterr(ppd->dd, ppd->port,
"SDMA senddmabase: 0x%016llx\n", reg);
reg = qib_read_kreg_port(ppd, krp_senddmabufmask0);
reg1 = qib_read_kreg_port(ppd, krp_senddmabufmask1);
reg2 = qib_read_kreg_port(ppd, krp_senddmabufmask2);
qib_dev_porterr(ppd->dd, ppd->port,
"SDMA senddmabufmask 0:%llx 1:%llx 2:%llx\n",
reg, reg1, reg2);
/* get bufuse bits, clear them, and print them again if non-zero */
reg = qib_read_kreg_port(ppd, krp_senddmabuf_use0);
qib_write_kreg_port(ppd, krp_senddmabuf_use0, reg);
reg1 = qib_read_kreg_port(ppd, krp_senddmabuf_use1);
qib_write_kreg_port(ppd, krp_senddmabuf_use0, reg1);
reg2 = qib_read_kreg_port(ppd, krp_senddmabuf_use2);
qib_write_kreg_port(ppd, krp_senddmabuf_use0, reg2);
/* 0 and 1 should always be zero, so print as short form */
qib_dev_porterr(ppd->dd, ppd->port,
"SDMA current senddmabuf_use 0:%llx 1:%llx 2:%llx\n",
reg, reg1, reg2);
reg = qib_read_kreg_port(ppd, krp_senddmabuf_use0);
reg1 = qib_read_kreg_port(ppd, krp_senddmabuf_use1);
reg2 = qib_read_kreg_port(ppd, krp_senddmabuf_use2);
/* 0 and 1 should always be zero, so print as short form */
qib_dev_porterr(ppd->dd, ppd->port,
"SDMA cleared senddmabuf_use 0:%llx 1:%llx 2:%llx\n",
reg, reg1, reg2);
reg = qib_read_kreg_port(ppd, krp_senddmatail);
qib_dev_porterr(ppd->dd, ppd->port,
"SDMA senddmatail: 0x%016llx\n", reg);
reg = qib_read_kreg_port(ppd, krp_senddmahead);
qib_dev_porterr(ppd->dd, ppd->port,
"SDMA senddmahead: 0x%016llx\n", reg);
reg = qib_read_kreg_port(ppd, krp_senddmaheadaddr);
qib_dev_porterr(ppd->dd, ppd->port,
"SDMA senddmaheadaddr: 0x%016llx\n", reg);
reg = qib_read_kreg_port(ppd, krp_senddmalengen);
qib_dev_porterr(ppd->dd, ppd->port,
"SDMA senddmalengen: 0x%016llx\n", reg);
reg = qib_read_kreg_port(ppd, krp_senddmadesccnt);
qib_dev_porterr(ppd->dd, ppd->port,
"SDMA senddmadesccnt: 0x%016llx\n", reg);
reg = qib_read_kreg_port(ppd, krp_senddmaidlecnt);
qib_dev_porterr(ppd->dd, ppd->port,
"SDMA senddmaidlecnt: 0x%016llx\n", reg);
reg = qib_read_kreg_port(ppd, krp_senddmaprioritythld);
qib_dev_porterr(ppd->dd, ppd->port,
"SDMA senddmapriorityhld: 0x%016llx\n", reg);
reg = qib_read_kreg_port(ppd, krp_senddmareloadcnt);
qib_dev_porterr(ppd->dd, ppd->port,
"SDMA senddmareloadcnt: 0x%016llx\n", reg);
dump_sdma_state(ppd);
}
static struct sdma_set_state_action sdma_7322_action_table[] = {
[qib_sdma_state_s00_hw_down] = {
.go_s99_running_tofalse = 1,
.op_enable = 0,
.op_intenable = 0,
.op_halt = 0,
.op_drain = 0,
},
[qib_sdma_state_s10_hw_start_up_wait] = {
.op_enable = 0,
.op_intenable = 1,
.op_halt = 1,
.op_drain = 0,
},
[qib_sdma_state_s20_idle] = {
.op_enable = 1,
.op_intenable = 1,
.op_halt = 1,
.op_drain = 0,
},
[qib_sdma_state_s30_sw_clean_up_wait] = {
.op_enable = 0,
.op_intenable = 1,
.op_halt = 1,
.op_drain = 0,
},
[qib_sdma_state_s40_hw_clean_up_wait] = {
.op_enable = 1,
.op_intenable = 1,
.op_halt = 1,
.op_drain = 0,
},
[qib_sdma_state_s50_hw_halt_wait] = {
.op_enable = 1,
.op_intenable = 1,
.op_halt = 1,
.op_drain = 1,
},
[qib_sdma_state_s99_running] = {
.op_enable = 1,
.op_intenable = 1,
.op_halt = 0,
.op_drain = 0,
.go_s99_running_totrue = 1,
},
};
static void qib_7322_sdma_init_early(struct qib_pportdata *ppd)
{
ppd->sdma_state.set_state_action = sdma_7322_action_table;
}
static int init_sdma_7322_regs(struct qib_pportdata *ppd)
{
struct qib_devdata *dd = ppd->dd;
unsigned lastbuf, erstbuf;
u64 senddmabufmask[3] = { 0 };
int n, ret = 0;
qib_write_kreg_port(ppd, krp_senddmabase, ppd->sdma_descq_phys);
qib_sdma_7322_setlengen(ppd);
qib_sdma_update_7322_tail(ppd, 0); /* Set SendDmaTail */
qib_write_kreg_port(ppd, krp_senddmareloadcnt, sdma_idle_cnt);
qib_write_kreg_port(ppd, krp_senddmadesccnt, 0);
qib_write_kreg_port(ppd, krp_senddmaheadaddr, ppd->sdma_head_phys);
if (dd->num_pports)
n = dd->cspec->sdmabufcnt / dd->num_pports; /* no remainder */
else
n = dd->cspec->sdmabufcnt; /* failsafe for init */
erstbuf = (dd->piobcnt2k + dd->piobcnt4k) -
((dd->num_pports == 1 || ppd->port == 2) ? n :
dd->cspec->sdmabufcnt);
lastbuf = erstbuf + n;
ppd->sdma_state.first_sendbuf = erstbuf;
ppd->sdma_state.last_sendbuf = lastbuf;
for (; erstbuf < lastbuf; ++erstbuf) {
unsigned word = erstbuf / BITS_PER_LONG;
unsigned bit = erstbuf & (BITS_PER_LONG - 1);
BUG_ON(word >= 3);
senddmabufmask[word] |= 1ULL << bit;
}
qib_write_kreg_port(ppd, krp_senddmabufmask0, senddmabufmask[0]);
qib_write_kreg_port(ppd, krp_senddmabufmask1, senddmabufmask[1]);
qib_write_kreg_port(ppd, krp_senddmabufmask2, senddmabufmask[2]);
return ret;
}
/* sdma_lock must be held */
static u16 qib_sdma_7322_gethead(struct qib_pportdata *ppd)
{
struct qib_devdata *dd = ppd->dd;
int sane;
int use_dmahead;
u16 swhead;
u16 swtail;
u16 cnt;
u16 hwhead;
use_dmahead = __qib_sdma_running(ppd) &&
(dd->flags & QIB_HAS_SDMA_TIMEOUT);
retry:
hwhead = use_dmahead ?
(u16) le64_to_cpu(*ppd->sdma_head_dma) :
(u16) qib_read_kreg_port(ppd, krp_senddmahead);
swhead = ppd->sdma_descq_head;
swtail = ppd->sdma_descq_tail;
cnt = ppd->sdma_descq_cnt;
if (swhead < swtail)
/* not wrapped */
sane = (hwhead >= swhead) & (hwhead <= swtail);
else if (swhead > swtail)
/* wrapped around */
sane = ((hwhead >= swhead) && (hwhead < cnt)) ||
(hwhead <= swtail);
else
/* empty */
sane = (hwhead == swhead);
if (unlikely(!sane)) {
if (use_dmahead) {
/* try one more time, directly from the register */
use_dmahead = 0;
goto retry;
}
/* proceed as if no progress */
hwhead = swhead;
}
return hwhead;
}
static int qib_sdma_7322_busy(struct qib_pportdata *ppd)
{
u64 hwstatus = qib_read_kreg_port(ppd, krp_senddmastatus);
return (hwstatus & SYM_MASK(SendDmaStatus_0, ScoreBoardDrainInProg)) ||
(hwstatus & SYM_MASK(SendDmaStatus_0, HaltInProg)) ||
!(hwstatus & SYM_MASK(SendDmaStatus_0, InternalSDmaHalt)) ||
!(hwstatus & SYM_MASK(SendDmaStatus_0, ScbEmpty));
}
/*
* Compute the amount of delay before sending the next packet if the
* port's send rate differs from the static rate set for the QP.
* The delay affects the next packet and the amount of the delay is
* based on the length of the this packet.
*/
static u32 qib_7322_setpbc_control(struct qib_pportdata *ppd, u32 plen,
u8 srate, u8 vl)
{
u8 snd_mult = ppd->delay_mult;
u8 rcv_mult = ib_rate_to_delay[srate];
u32 ret;
ret = rcv_mult > snd_mult ? ((plen + 1) >> 1) * snd_mult : 0;
/* Indicate VL15, else set the VL in the control word */
if (vl == 15)
ret |= PBC_7322_VL15_SEND_CTRL;
else
ret |= vl << PBC_VL_NUM_LSB;
ret |= ((u32)(ppd->hw_pidx)) << PBC_PORT_SEL_LSB;
return ret;
}
/*
* Enable the per-port VL15 send buffers for use.
* They follow the rest of the buffers, without a config parameter.
* This was in initregs, but that is done before the shadow
* is set up, and this has to be done after the shadow is
* set up.
*/
static void qib_7322_initvl15_bufs(struct qib_devdata *dd)
{
unsigned vl15bufs;
vl15bufs = dd->piobcnt2k + dd->piobcnt4k;
qib_chg_pioavailkernel(dd, vl15bufs, NUM_VL15_BUFS,
TXCHK_CHG_TYPE_KERN, NULL);
}
static void qib_7322_init_ctxt(struct qib_ctxtdata *rcd)
{
if (rcd->ctxt < NUM_IB_PORTS) {
if (rcd->dd->num_pports > 1) {
rcd->rcvegrcnt = KCTXT0_EGRCNT / 2;
rcd->rcvegr_tid_base = rcd->ctxt ? rcd->rcvegrcnt : 0;
} else {
rcd->rcvegrcnt = KCTXT0_EGRCNT;
rcd->rcvegr_tid_base = 0;
}
} else {
rcd->rcvegrcnt = rcd->dd->cspec->rcvegrcnt;
rcd->rcvegr_tid_base = KCTXT0_EGRCNT +
(rcd->ctxt - NUM_IB_PORTS) * rcd->rcvegrcnt;
}
}
#define QTXSLEEPS 5000
static void qib_7322_txchk_change(struct qib_devdata *dd, u32 start,
u32 len, u32 which, struct qib_ctxtdata *rcd)
{
int i;
const int last = start + len - 1;
const int lastr = last / BITS_PER_LONG;
u32 sleeps = 0;
int wait = rcd != NULL;
unsigned long flags;
while (wait) {
unsigned long shadow;
int cstart, previ = -1;
/*
* when flipping from kernel to user, we can't change
* the checking type if the buffer is allocated to the
* driver. It's OK the other direction, because it's
* from close, and we have just disarm'ed all the
* buffers. All the kernel to kernel changes are also
* OK.
*/
for (cstart = start; cstart <= last; cstart++) {
i = ((2 * cstart) + QLOGIC_IB_SENDPIOAVAIL_BUSY_SHIFT)
/ BITS_PER_LONG;
if (i != previ) {
shadow = (unsigned long)
le64_to_cpu(dd->pioavailregs_dma[i]);
previ = i;
}
if (test_bit(((2 * cstart) +
QLOGIC_IB_SENDPIOAVAIL_BUSY_SHIFT)
% BITS_PER_LONG, &shadow))
break;
}
if (cstart > last)
break;
if (sleeps == QTXSLEEPS)
break;
/* make sure we see an updated copy next time around */
sendctrl_7322_mod(dd->pport, QIB_SENDCTRL_AVAIL_BLIP);
sleeps++;
msleep(20);
}
switch (which) {
case TXCHK_CHG_TYPE_DIS1:
/*
* disable checking on a range; used by diags; just
* one buffer, but still written generically
*/
for (i = start; i <= last; i++)
clear_bit(i, dd->cspec->sendchkenable);
break;
case TXCHK_CHG_TYPE_ENAB1:
/*
* (re)enable checking on a range; used by diags; just
* one buffer, but still written generically; read
* scratch to be sure buffer actually triggered, not
* just flushed from processor.
*/
qib_read_kreg32(dd, kr_scratch);
for (i = start; i <= last; i++)
set_bit(i, dd->cspec->sendchkenable);
break;
case TXCHK_CHG_TYPE_KERN:
/* usable by kernel */
for (i = start; i <= last; i++) {
set_bit(i, dd->cspec->sendibchk);
clear_bit(i, dd->cspec->sendgrhchk);
}
spin_lock_irqsave(&dd->uctxt_lock, flags);
/* see if we need to raise avail update threshold */
for (i = dd->first_user_ctxt;
dd->cspec->updthresh != dd->cspec->updthresh_dflt
&& i < dd->cfgctxts; i++)
if (dd->rcd[i] && dd->rcd[i]->subctxt_cnt &&
((dd->rcd[i]->piocnt / dd->rcd[i]->subctxt_cnt) - 1)
< dd->cspec->updthresh_dflt)
break;
spin_unlock_irqrestore(&dd->uctxt_lock, flags);
if (i == dd->cfgctxts) {
spin_lock_irqsave(&dd->sendctrl_lock, flags);
dd->cspec->updthresh = dd->cspec->updthresh_dflt;
dd->sendctrl &= ~SYM_MASK(SendCtrl, AvailUpdThld);
dd->sendctrl |= (dd->cspec->updthresh &
SYM_RMASK(SendCtrl, AvailUpdThld)) <<
SYM_LSB(SendCtrl, AvailUpdThld);
spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
sendctrl_7322_mod(dd->pport, QIB_SENDCTRL_AVAIL_BLIP);
}
break;
case TXCHK_CHG_TYPE_USER:
/* for user process */
for (i = start; i <= last; i++) {
clear_bit(i, dd->cspec->sendibchk);
set_bit(i, dd->cspec->sendgrhchk);
}
spin_lock_irqsave(&dd->sendctrl_lock, flags);
if (rcd && rcd->subctxt_cnt && ((rcd->piocnt
/ rcd->subctxt_cnt) - 1) < dd->cspec->updthresh) {
dd->cspec->updthresh = (rcd->piocnt /
rcd->subctxt_cnt) - 1;
dd->sendctrl &= ~SYM_MASK(SendCtrl, AvailUpdThld);
dd->sendctrl |= (dd->cspec->updthresh &
SYM_RMASK(SendCtrl, AvailUpdThld))
<< SYM_LSB(SendCtrl, AvailUpdThld);
spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
sendctrl_7322_mod(dd->pport, QIB_SENDCTRL_AVAIL_BLIP);
} else
spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
break;
default:
break;
}
for (i = start / BITS_PER_LONG; which >= 2 && i <= lastr; ++i)
qib_write_kreg(dd, kr_sendcheckmask + i,
dd->cspec->sendchkenable[i]);
for (i = start / BITS_PER_LONG; which < 2 && i <= lastr; ++i) {
qib_write_kreg(dd, kr_sendgrhcheckmask + i,
dd->cspec->sendgrhchk[i]);
qib_write_kreg(dd, kr_sendibpktmask + i,
dd->cspec->sendibchk[i]);
}
/*
* Be sure whatever we did was seen by the chip and acted upon,
* before we return. Mostly important for which >= 2.
*/
qib_read_kreg32(dd, kr_scratch);
}
/* useful for trigger analyzers, etc. */
static void writescratch(struct qib_devdata *dd, u32 val)
{
qib_write_kreg(dd, kr_scratch, val);
}
/* Dummy for now, use chip regs soon */
static int qib_7322_tempsense_rd(struct qib_devdata *dd, int regnum)
{
return -ENXIO;
}
/**
* qib_init_iba7322_funcs - set up the chip-specific function pointers
* @dev: the pci_dev for qlogic_ib device
* @ent: pci_device_id struct for this dev
*
* Also allocates, inits, and returns the devdata struct for this
* device instance
*
* This is global, and is called directly at init to set up the
* chip-specific function pointers for later use.
*/
struct qib_devdata *qib_init_iba7322_funcs(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct qib_devdata *dd;
int ret, i;
u32 tabsize, actual_cnt = 0;
dd = qib_alloc_devdata(pdev,
NUM_IB_PORTS * sizeof(struct qib_pportdata) +
sizeof(struct qib_chip_specific) +
NUM_IB_PORTS * sizeof(struct qib_chippport_specific));
if (IS_ERR(dd))
goto bail;
dd->f_bringup_serdes = qib_7322_bringup_serdes;
dd->f_cleanup = qib_setup_7322_cleanup;
dd->f_clear_tids = qib_7322_clear_tids;
dd->f_free_irq = qib_7322_free_irq;
dd->f_get_base_info = qib_7322_get_base_info;
dd->f_get_msgheader = qib_7322_get_msgheader;
dd->f_getsendbuf = qib_7322_getsendbuf;
dd->f_gpio_mod = gpio_7322_mod;
dd->f_eeprom_wen = qib_7322_eeprom_wen;
dd->f_hdrqempty = qib_7322_hdrqempty;
dd->f_ib_updown = qib_7322_ib_updown;
dd->f_init_ctxt = qib_7322_init_ctxt;
dd->f_initvl15_bufs = qib_7322_initvl15_bufs;
dd->f_intr_fallback = qib_7322_intr_fallback;
dd->f_late_initreg = qib_late_7322_initreg;
dd->f_setpbc_control = qib_7322_setpbc_control;
dd->f_portcntr = qib_portcntr_7322;
dd->f_put_tid = qib_7322_put_tid;
dd->f_quiet_serdes = qib_7322_mini_quiet_serdes;
dd->f_rcvctrl = rcvctrl_7322_mod;
dd->f_read_cntrs = qib_read_7322cntrs;
dd->f_read_portcntrs = qib_read_7322portcntrs;
dd->f_reset = qib_do_7322_reset;
dd->f_init_sdma_regs = init_sdma_7322_regs;
dd->f_sdma_busy = qib_sdma_7322_busy;
dd->f_sdma_gethead = qib_sdma_7322_gethead;
dd->f_sdma_sendctrl = qib_7322_sdma_sendctrl;
dd->f_sdma_set_desc_cnt = qib_sdma_set_7322_desc_cnt;
dd->f_sdma_update_tail = qib_sdma_update_7322_tail;
dd->f_sendctrl = sendctrl_7322_mod;
dd->f_set_armlaunch = qib_set_7322_armlaunch;
dd->f_set_cntr_sample = qib_set_cntr_7322_sample;
dd->f_iblink_state = qib_7322_iblink_state;
dd->f_ibphys_portstate = qib_7322_phys_portstate;
dd->f_get_ib_cfg = qib_7322_get_ib_cfg;
dd->f_set_ib_cfg = qib_7322_set_ib_cfg;
dd->f_set_ib_loopback = qib_7322_set_loopback;
dd->f_get_ib_table = qib_7322_get_ib_table;
dd->f_set_ib_table = qib_7322_set_ib_table;
dd->f_set_intr_state = qib_7322_set_intr_state;
dd->f_setextled = qib_setup_7322_setextled;
dd->f_txchk_change = qib_7322_txchk_change;
dd->f_update_usrhead = qib_update_7322_usrhead;
dd->f_wantpiobuf_intr = qib_wantpiobuf_7322_intr;
dd->f_xgxs_reset = qib_7322_mini_pcs_reset;
dd->f_sdma_hw_clean_up = qib_7322_sdma_hw_clean_up;
dd->f_sdma_hw_start_up = qib_7322_sdma_hw_start_up;
dd->f_sdma_init_early = qib_7322_sdma_init_early;
dd->f_writescratch = writescratch;
dd->f_tempsense_rd = qib_7322_tempsense_rd;
#ifdef CONFIG_INFINIBAND_QIB_DCA
dd->f_notify_dca = qib_7322_notify_dca;
#endif
/*
* Do remaining PCIe setup and save PCIe values in dd.
* Any error printing is already done by the init code.
* On return, we have the chip mapped, but chip registers
* are not set up until start of qib_init_7322_variables.
*/
ret = qib_pcie_ddinit(dd, pdev, ent);
if (ret < 0)
goto bail_free;
/* initialize chip-specific variables */
ret = qib_init_7322_variables(dd);
if (ret)
goto bail_cleanup;
if (qib_mini_init || !dd->num_pports)
goto bail;
/*
* Determine number of vectors we want; depends on port count
* and number of configured kernel receive queues actually used.
* Should also depend on whether sdma is enabled or not, but
* that's such a rare testing case it's not worth worrying about.
*/
tabsize = dd->first_user_ctxt + ARRAY_SIZE(irq_table);
for (i = 0; i < tabsize; i++)
if ((i < ARRAY_SIZE(irq_table) &&
irq_table[i].port <= dd->num_pports) ||
(i >= ARRAY_SIZE(irq_table) &&
dd->rcd[i - ARRAY_SIZE(irq_table)]))
actual_cnt++;
/* reduce by ctxt's < 2 */
if (qib_krcvq01_no_msi)
actual_cnt -= dd->num_pports;
tabsize = actual_cnt;
dd->cspec->msix_entries = kzalloc(tabsize *
sizeof(struct qib_msix_entry), GFP_KERNEL);
if (!dd->cspec->msix_entries) {
qib_dev_err(dd, "No memory for MSIx table\n");
tabsize = 0;
}
for (i = 0; i < tabsize; i++)
dd->cspec->msix_entries[i].msix.entry = i;
if (qib_pcie_params(dd, 8, &tabsize, dd->cspec->msix_entries))
qib_dev_err(dd,
"Failed to setup PCIe or interrupts; continuing anyway\n");
/* may be less than we wanted, if not enough available */
dd->cspec->num_msix_entries = tabsize;
/* setup interrupt handler */
qib_setup_7322_interrupt(dd, 1);
/* clear diagctrl register, in case diags were running and crashed */
qib_write_kreg(dd, kr_hwdiagctrl, 0);
#ifdef CONFIG_INFINIBAND_QIB_DCA
if (!dca_add_requester(&pdev->dev)) {
qib_devinfo(dd->pcidev, "DCA enabled\n");
dd->flags |= QIB_DCA_ENABLED;
qib_setup_dca(dd);
}
#endif
goto bail;
bail_cleanup:
qib_pcie_ddcleanup(dd);
bail_free:
qib_free_devdata(dd);
dd = ERR_PTR(ret);
bail:
return dd;
}
/*
* Set the table entry at the specified index from the table specifed.
* There are 3 * TXDDS_TABLE_SZ entries in all per port, with the first
* TXDDS_TABLE_SZ for SDR, the next for DDR, and the last for QDR.
* 'idx' below addresses the correct entry, while its 4 LSBs select the
* corresponding entry (one of TXDDS_TABLE_SZ) from the selected table.
*/
#define DDS_ENT_AMP_LSB 14
#define DDS_ENT_MAIN_LSB 9
#define DDS_ENT_POST_LSB 5
#define DDS_ENT_PRE_XTRA_LSB 3
#define DDS_ENT_PRE_LSB 0
/*
* Set one entry in the TxDDS table for spec'd port
* ridx picks one of the entries, while tp points
* to the appropriate table entry.
*/
static void set_txdds(struct qib_pportdata *ppd, int ridx,
const struct txdds_ent *tp)
{
struct qib_devdata *dd = ppd->dd;
u32 pack_ent;
int regidx;
/* Get correct offset in chip-space, and in source table */
regidx = KREG_IBPORT_IDX(IBSD_DDS_MAP_TABLE) + ridx;
/*
* We do not use qib_write_kreg_port() because it was intended
* only for registers in the lower "port specific" pages.
* So do index calculation by hand.
*/
if (ppd->hw_pidx)
regidx += (dd->palign / sizeof(u64));
pack_ent = tp->amp << DDS_ENT_AMP_LSB;
pack_ent |= tp->main << DDS_ENT_MAIN_LSB;
pack_ent |= tp->pre << DDS_ENT_PRE_LSB;
pack_ent |= tp->post << DDS_ENT_POST_LSB;
qib_write_kreg(dd, regidx, pack_ent);
/* Prevent back-to-back writes by hitting scratch */
qib_write_kreg(ppd->dd, kr_scratch, 0);
}
static const struct vendor_txdds_ent vendor_txdds[] = {
{ /* Amphenol 1m 30awg NoEq */
{ 0x41, 0x50, 0x48 }, "584470002 ",
{ 10, 0, 0, 5 }, { 10, 0, 0, 9 }, { 7, 1, 0, 13 },
},
{ /* Amphenol 3m 28awg NoEq */
{ 0x41, 0x50, 0x48 }, "584470004 ",
{ 0, 0, 0, 8 }, { 0, 0, 0, 11 }, { 0, 1, 7, 15 },
},
{ /* Finisar 3m OM2 Optical */
{ 0x00, 0x90, 0x65 }, "FCBG410QB1C03-QL",
{ 0, 0, 0, 3 }, { 0, 0, 0, 4 }, { 0, 0, 0, 13 },
},
{ /* Finisar 30m OM2 Optical */
{ 0x00, 0x90, 0x65 }, "FCBG410QB1C30-QL",
{ 0, 0, 0, 1 }, { 0, 0, 0, 5 }, { 0, 0, 0, 11 },
},
{ /* Finisar Default OM2 Optical */
{ 0x00, 0x90, 0x65 }, NULL,
{ 0, 0, 0, 2 }, { 0, 0, 0, 5 }, { 0, 0, 0, 12 },
},
{ /* Gore 1m 30awg NoEq */
{ 0x00, 0x21, 0x77 }, "QSN3300-1 ",
{ 0, 0, 0, 6 }, { 0, 0, 0, 9 }, { 0, 1, 0, 15 },
},
{ /* Gore 2m 30awg NoEq */
{ 0x00, 0x21, 0x77 }, "QSN3300-2 ",
{ 0, 0, 0, 8 }, { 0, 0, 0, 10 }, { 0, 1, 7, 15 },
},
{ /* Gore 1m 28awg NoEq */
{ 0x00, 0x21, 0x77 }, "QSN3800-1 ",
{ 0, 0, 0, 6 }, { 0, 0, 0, 8 }, { 0, 1, 0, 15 },
},
{ /* Gore 3m 28awg NoEq */
{ 0x00, 0x21, 0x77 }, "QSN3800-3 ",
{ 0, 0, 0, 9 }, { 0, 0, 0, 13 }, { 0, 1, 7, 15 },
},
{ /* Gore 5m 24awg Eq */
{ 0x00, 0x21, 0x77 }, "QSN7000-5 ",
{ 0, 0, 0, 7 }, { 0, 0, 0, 9 }, { 0, 1, 3, 15 },
},
{ /* Gore 7m 24awg Eq */
{ 0x00, 0x21, 0x77 }, "QSN7000-7 ",
{ 0, 0, 0, 9 }, { 0, 0, 0, 11 }, { 0, 2, 6, 15 },
},
{ /* Gore 5m 26awg Eq */
{ 0x00, 0x21, 0x77 }, "QSN7600-5 ",
{ 0, 0, 0, 8 }, { 0, 0, 0, 11 }, { 0, 1, 9, 13 },
},
{ /* Gore 7m 26awg Eq */
{ 0x00, 0x21, 0x77 }, "QSN7600-7 ",
{ 0, 0, 0, 8 }, { 0, 0, 0, 11 }, { 10, 1, 8, 15 },
},
{ /* Intersil 12m 24awg Active */
{ 0x00, 0x30, 0xB4 }, "QLX4000CQSFP1224",
{ 0, 0, 0, 2 }, { 0, 0, 0, 5 }, { 0, 3, 0, 9 },
},
{ /* Intersil 10m 28awg Active */
{ 0x00, 0x30, 0xB4 }, "QLX4000CQSFP1028",
{ 0, 0, 0, 6 }, { 0, 0, 0, 4 }, { 0, 2, 0, 2 },
},
{ /* Intersil 7m 30awg Active */
{ 0x00, 0x30, 0xB4 }, "QLX4000CQSFP0730",
{ 0, 0, 0, 6 }, { 0, 0, 0, 4 }, { 0, 1, 0, 3 },
},
{ /* Intersil 5m 32awg Active */
{ 0x00, 0x30, 0xB4 }, "QLX4000CQSFP0532",
{ 0, 0, 0, 6 }, { 0, 0, 0, 6 }, { 0, 2, 0, 8 },
},
{ /* Intersil Default Active */
{ 0x00, 0x30, 0xB4 }, NULL,
{ 0, 0, 0, 6 }, { 0, 0, 0, 5 }, { 0, 2, 0, 5 },
},
{ /* Luxtera 20m Active Optical */
{ 0x00, 0x25, 0x63 }, NULL,
{ 0, 0, 0, 5 }, { 0, 0, 0, 8 }, { 0, 2, 0, 12 },
},
{ /* Molex 1M Cu loopback */
{ 0x00, 0x09, 0x3A }, "74763-0025 ",
{ 2, 2, 6, 15 }, { 2, 2, 6, 15 }, { 2, 2, 6, 15 },
},
{ /* Molex 2m 28awg NoEq */
{ 0x00, 0x09, 0x3A }, "74757-2201 ",
{ 0, 0, 0, 6 }, { 0, 0, 0, 9 }, { 0, 1, 1, 15 },
},
};
static const struct txdds_ent txdds_sdr[TXDDS_TABLE_SZ] = {
/* amp, pre, main, post */
{ 2, 2, 15, 6 }, /* Loopback */
{ 0, 0, 0, 1 }, /* 2 dB */
{ 0, 0, 0, 2 }, /* 3 dB */
{ 0, 0, 0, 3 }, /* 4 dB */
{ 0, 0, 0, 4 }, /* 5 dB */
{ 0, 0, 0, 5 }, /* 6 dB */
{ 0, 0, 0, 6 }, /* 7 dB */
{ 0, 0, 0, 7 }, /* 8 dB */
{ 0, 0, 0, 8 }, /* 9 dB */
{ 0, 0, 0, 9 }, /* 10 dB */
{ 0, 0, 0, 10 }, /* 11 dB */
{ 0, 0, 0, 11 }, /* 12 dB */
{ 0, 0, 0, 12 }, /* 13 dB */
{ 0, 0, 0, 13 }, /* 14 dB */
{ 0, 0, 0, 14 }, /* 15 dB */
{ 0, 0, 0, 15 }, /* 16 dB */
};
static const struct txdds_ent txdds_ddr[TXDDS_TABLE_SZ] = {
/* amp, pre, main, post */
{ 2, 2, 15, 6 }, /* Loopback */
{ 0, 0, 0, 8 }, /* 2 dB */
{ 0, 0, 0, 8 }, /* 3 dB */
{ 0, 0, 0, 9 }, /* 4 dB */
{ 0, 0, 0, 9 }, /* 5 dB */
{ 0, 0, 0, 10 }, /* 6 dB */
{ 0, 0, 0, 10 }, /* 7 dB */
{ 0, 0, 0, 11 }, /* 8 dB */
{ 0, 0, 0, 11 }, /* 9 dB */
{ 0, 0, 0, 12 }, /* 10 dB */
{ 0, 0, 0, 12 }, /* 11 dB */
{ 0, 0, 0, 13 }, /* 12 dB */
{ 0, 0, 0, 13 }, /* 13 dB */
{ 0, 0, 0, 14 }, /* 14 dB */
{ 0, 0, 0, 14 }, /* 15 dB */
{ 0, 0, 0, 15 }, /* 16 dB */
};
static const struct txdds_ent txdds_qdr[TXDDS_TABLE_SZ] = {
/* amp, pre, main, post */
{ 2, 2, 15, 6 }, /* Loopback */
{ 0, 1, 0, 7 }, /* 2 dB (also QMH7342) */
{ 0, 1, 0, 9 }, /* 3 dB (also QMH7342) */
{ 0, 1, 0, 11 }, /* 4 dB */
{ 0, 1, 0, 13 }, /* 5 dB */
{ 0, 1, 0, 15 }, /* 6 dB */
{ 0, 1, 3, 15 }, /* 7 dB */
{ 0, 1, 7, 15 }, /* 8 dB */
{ 0, 1, 7, 15 }, /* 9 dB */
{ 0, 1, 8, 15 }, /* 10 dB */
{ 0, 1, 9, 15 }, /* 11 dB */
{ 0, 1, 10, 15 }, /* 12 dB */
{ 0, 2, 6, 15 }, /* 13 dB */
{ 0, 2, 7, 15 }, /* 14 dB */
{ 0, 2, 8, 15 }, /* 15 dB */
{ 0, 2, 9, 15 }, /* 16 dB */
};
/*
* extra entries for use with txselect, for indices >= TXDDS_TABLE_SZ.
* These are mostly used for mez cards going through connectors
* and backplane traces, but can be used to add other "unusual"
* table values as well.
*/
static const struct txdds_ent txdds_extra_sdr[TXDDS_EXTRA_SZ] = {
/* amp, pre, main, post */
{ 0, 0, 0, 1 }, /* QMH7342 backplane settings */
{ 0, 0, 0, 1 }, /* QMH7342 backplane settings */
{ 0, 0, 0, 2 }, /* QMH7342 backplane settings */
{ 0, 0, 0, 2 }, /* QMH7342 backplane settings */
{ 0, 0, 0, 3 }, /* QMH7342 backplane settings */
{ 0, 0, 0, 4 }, /* QMH7342 backplane settings */
{ 0, 1, 4, 15 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 3, 15 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 0, 12 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 0, 11 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 0, 9 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 0, 14 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 2, 15 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 0, 11 }, /* QME7342 backplane settings 1.1 */
{ 0, 1, 0, 7 }, /* QME7342 backplane settings 1.1 */
{ 0, 1, 0, 9 }, /* QME7342 backplane settings 1.1 */
{ 0, 1, 0, 6 }, /* QME7342 backplane settings 1.1 */
{ 0, 1, 0, 8 }, /* QME7342 backplane settings 1.1 */
};
static const struct txdds_ent txdds_extra_ddr[TXDDS_EXTRA_SZ] = {
/* amp, pre, main, post */
{ 0, 0, 0, 7 }, /* QMH7342 backplane settings */
{ 0, 0, 0, 7 }, /* QMH7342 backplane settings */
{ 0, 0, 0, 8 }, /* QMH7342 backplane settings */
{ 0, 0, 0, 8 }, /* QMH7342 backplane settings */
{ 0, 0, 0, 9 }, /* QMH7342 backplane settings */
{ 0, 0, 0, 10 }, /* QMH7342 backplane settings */
{ 0, 1, 4, 15 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 3, 15 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 0, 12 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 0, 11 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 0, 9 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 0, 14 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 2, 15 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 0, 11 }, /* QME7342 backplane settings 1.1 */
{ 0, 1, 0, 7 }, /* QME7342 backplane settings 1.1 */
{ 0, 1, 0, 9 }, /* QME7342 backplane settings 1.1 */
{ 0, 1, 0, 6 }, /* QME7342 backplane settings 1.1 */
{ 0, 1, 0, 8 }, /* QME7342 backplane settings 1.1 */
};
static const struct txdds_ent txdds_extra_qdr[TXDDS_EXTRA_SZ] = {
/* amp, pre, main, post */
{ 0, 1, 0, 4 }, /* QMH7342 backplane settings */
{ 0, 1, 0, 5 }, /* QMH7342 backplane settings */
{ 0, 1, 0, 6 }, /* QMH7342 backplane settings */
{ 0, 1, 0, 8 }, /* QMH7342 backplane settings */
{ 0, 1, 0, 10 }, /* QMH7342 backplane settings */
{ 0, 1, 0, 12 }, /* QMH7342 backplane settings */
{ 0, 1, 4, 15 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 3, 15 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 0, 12 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 0, 11 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 0, 9 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 0, 14 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 2, 15 }, /* QME7342 backplane settings 1.0 */
{ 0, 1, 0, 11 }, /* QME7342 backplane settings 1.1 */
{ 0, 1, 0, 7 }, /* QME7342 backplane settings 1.1 */
{ 0, 1, 0, 9 }, /* QME7342 backplane settings 1.1 */
{ 0, 1, 0, 6 }, /* QME7342 backplane settings 1.1 */
{ 0, 1, 0, 8 }, /* QME7342 backplane settings 1.1 */
};
static const struct txdds_ent txdds_extra_mfg[TXDDS_MFG_SZ] = {
/* amp, pre, main, post */
{ 0, 0, 0, 0 }, /* QME7342 mfg settings */
{ 0, 0, 0, 6 }, /* QME7342 P2 mfg settings */
};
static const struct txdds_ent *get_atten_table(const struct txdds_ent *txdds,
unsigned atten)
{
/*
* The attenuation table starts at 2dB for entry 1,
* with entry 0 being the loopback entry.
*/
if (atten <= 2)
atten = 1;
else if (atten > TXDDS_TABLE_SZ)
atten = TXDDS_TABLE_SZ - 1;
else
atten--;
return txdds + atten;
}
/*
* if override is set, the module parameter txselect has a value
* for this specific port, so use it, rather than our normal mechanism.
*/
static void find_best_ent(struct qib_pportdata *ppd,
const struct txdds_ent **sdr_dds,
const struct txdds_ent **ddr_dds,
const struct txdds_ent **qdr_dds, int override)
{
struct qib_qsfp_cache *qd = &ppd->cpspec->qsfp_data.cache;
int idx;
/* Search table of known cables */
for (idx = 0; !override && idx < ARRAY_SIZE(vendor_txdds); ++idx) {
const struct vendor_txdds_ent *v = vendor_txdds + idx;
if (!memcmp(v->oui, qd->oui, QSFP_VOUI_LEN) &&
(!v->partnum ||
!memcmp(v->partnum, qd->partnum, QSFP_PN_LEN))) {
*sdr_dds = &v->sdr;
*ddr_dds = &v->ddr;
*qdr_dds = &v->qdr;
return;
}
}
/* Active cables don't have attenuation so we only set SERDES
* settings to account for the attenuation of the board traces. */
if (!override && QSFP_IS_ACTIVE(qd->tech)) {
*sdr_dds = txdds_sdr + ppd->dd->board_atten;
*ddr_dds = txdds_ddr + ppd->dd->board_atten;
*qdr_dds = txdds_qdr + ppd->dd->board_atten;
return;
}
if (!override && QSFP_HAS_ATTEN(qd->tech) && (qd->atten[0] ||
qd->atten[1])) {
*sdr_dds = get_atten_table(txdds_sdr, qd->atten[0]);
*ddr_dds = get_atten_table(txdds_ddr, qd->atten[0]);
*qdr_dds = get_atten_table(txdds_qdr, qd->atten[1]);
return;
} else if (ppd->cpspec->no_eep < TXDDS_TABLE_SZ) {
/*
* If we have no (or incomplete) data from the cable
* EEPROM, or no QSFP, or override is set, use the
* module parameter value to index into the attentuation
* table.
*/
idx = ppd->cpspec->no_eep;
*sdr_dds = &txdds_sdr[idx];
*ddr_dds = &txdds_ddr[idx];
*qdr_dds = &txdds_qdr[idx];
} else if (ppd->cpspec->no_eep < (TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ)) {
/* similar to above, but index into the "extra" table. */
idx = ppd->cpspec->no_eep - TXDDS_TABLE_SZ;
*sdr_dds = &txdds_extra_sdr[idx];
*ddr_dds = &txdds_extra_ddr[idx];
*qdr_dds = &txdds_extra_qdr[idx];
} else if ((IS_QME(ppd->dd) || IS_QMH(ppd->dd)) &&
ppd->cpspec->no_eep < (TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ +
TXDDS_MFG_SZ)) {
idx = ppd->cpspec->no_eep - (TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ);
pr_info("IB%u:%u use idx %u into txdds_mfg\n",
ppd->dd->unit, ppd->port, idx);
*sdr_dds = &txdds_extra_mfg[idx];
*ddr_dds = &txdds_extra_mfg[idx];
*qdr_dds = &txdds_extra_mfg[idx];
} else {
/* this shouldn't happen, it's range checked */
*sdr_dds = txdds_sdr + qib_long_atten;
*ddr_dds = txdds_ddr + qib_long_atten;
*qdr_dds = txdds_qdr + qib_long_atten;
}
}
static void init_txdds_table(struct qib_pportdata *ppd, int override)
{
const struct txdds_ent *sdr_dds, *ddr_dds, *qdr_dds;
struct txdds_ent *dds;
int idx;
int single_ent = 0;
find_best_ent(ppd, &sdr_dds, &ddr_dds, &qdr_dds, override);
/* for mez cards or override, use the selected value for all entries */
if (!(ppd->dd->flags & QIB_HAS_QSFP) || override)
single_ent = 1;
/* Fill in the first entry with the best entry found. */
set_txdds(ppd, 0, sdr_dds);
set_txdds(ppd, TXDDS_TABLE_SZ, ddr_dds);
set_txdds(ppd, 2 * TXDDS_TABLE_SZ, qdr_dds);
if (ppd->lflags & (QIBL_LINKINIT | QIBL_LINKARMED |
QIBL_LINKACTIVE)) {
dds = (struct txdds_ent *)(ppd->link_speed_active ==
QIB_IB_QDR ? qdr_dds :
(ppd->link_speed_active ==
QIB_IB_DDR ? ddr_dds : sdr_dds));
write_tx_serdes_param(ppd, dds);
}
/* Fill in the remaining entries with the default table values. */
for (idx = 1; idx < ARRAY_SIZE(txdds_sdr); ++idx) {
set_txdds(ppd, idx, single_ent ? sdr_dds : txdds_sdr + idx);
set_txdds(ppd, idx + TXDDS_TABLE_SZ,
single_ent ? ddr_dds : txdds_ddr + idx);
set_txdds(ppd, idx + 2 * TXDDS_TABLE_SZ,
single_ent ? qdr_dds : txdds_qdr + idx);
}
}
#define KR_AHB_ACC KREG_IDX(ahb_access_ctrl)
#define KR_AHB_TRANS KREG_IDX(ahb_transaction_reg)
#define AHB_TRANS_RDY SYM_MASK(ahb_transaction_reg, ahb_rdy)
#define AHB_ADDR_LSB SYM_LSB(ahb_transaction_reg, ahb_address)
#define AHB_DATA_LSB SYM_LSB(ahb_transaction_reg, ahb_data)
#define AHB_WR SYM_MASK(ahb_transaction_reg, write_not_read)
#define AHB_TRANS_TRIES 10
/*
* The chan argument is 0=chan0, 1=chan1, 2=pll, 3=chan2, 4=chan4,
* 5=subsystem which is why most calls have "chan + chan >> 1"
* for the channel argument.
*/
static u32 ahb_mod(struct qib_devdata *dd, int quad, int chan, int addr,
u32 data, u32 mask)
{
u32 rd_data, wr_data, sz_mask;
u64 trans, acc, prev_acc;
u32 ret = 0xBAD0BAD;
int tries;
prev_acc = qib_read_kreg64(dd, KR_AHB_ACC);
/* From this point on, make sure we return access */
acc = (quad << 1) | 1;
qib_write_kreg(dd, KR_AHB_ACC, acc);
for (tries = 1; tries < AHB_TRANS_TRIES; ++tries) {
trans = qib_read_kreg64(dd, KR_AHB_TRANS);
if (trans & AHB_TRANS_RDY)
break;
}
if (tries >= AHB_TRANS_TRIES) {
qib_dev_err(dd, "No ahb_rdy in %d tries\n", AHB_TRANS_TRIES);
goto bail;
}
/* If mask is not all 1s, we need to read, but different SerDes
* entities have different sizes
*/
sz_mask = (1UL << ((quad == 1) ? 32 : 16)) - 1;
wr_data = data & mask & sz_mask;
if ((~mask & sz_mask) != 0) {
trans = ((chan << 6) | addr) << (AHB_ADDR_LSB + 1);
qib_write_kreg(dd, KR_AHB_TRANS, trans);
for (tries = 1; tries < AHB_TRANS_TRIES; ++tries) {
trans = qib_read_kreg64(dd, KR_AHB_TRANS);
if (trans & AHB_TRANS_RDY)
break;
}
if (tries >= AHB_TRANS_TRIES) {
qib_dev_err(dd, "No Rd ahb_rdy in %d tries\n",
AHB_TRANS_TRIES);
goto bail;
}
/* Re-read in case host split reads and read data first */
trans = qib_read_kreg64(dd, KR_AHB_TRANS);
rd_data = (uint32_t)(trans >> AHB_DATA_LSB);
wr_data |= (rd_data & ~mask & sz_mask);
}
/* If mask is not zero, we need to write. */
if (mask & sz_mask) {
trans = ((chan << 6) | addr) << (AHB_ADDR_LSB + 1);
trans |= ((uint64_t)wr_data << AHB_DATA_LSB);
trans |= AHB_WR;
qib_write_kreg(dd, KR_AHB_TRANS, trans);
for (tries = 1; tries < AHB_TRANS_TRIES; ++tries) {
trans = qib_read_kreg64(dd, KR_AHB_TRANS);
if (trans & AHB_TRANS_RDY)
break;
}
if (tries >= AHB_TRANS_TRIES) {
qib_dev_err(dd, "No Wr ahb_rdy in %d tries\n",
AHB_TRANS_TRIES);
goto bail;
}
}
ret = wr_data;
bail:
qib_write_kreg(dd, KR_AHB_ACC, prev_acc);
return ret;
}
static void ibsd_wr_allchans(struct qib_pportdata *ppd, int addr, unsigned data,
unsigned mask)
{
struct qib_devdata *dd = ppd->dd;
int chan;
u32 rbc;
for (chan = 0; chan < SERDES_CHANS; ++chan) {
ahb_mod(dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)), addr,
data, mask);
rbc = ahb_mod(dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)),
addr, 0, 0);
}
}
static void serdes_7322_los_enable(struct qib_pportdata *ppd, int enable)
{
u64 data = qib_read_kreg_port(ppd, krp_serdesctrl);
u8 state = SYM_FIELD(data, IBSerdesCtrl_0, RXLOSEN);
if (enable && !state) {
pr_info("IB%u:%u Turning LOS on\n",
ppd->dd->unit, ppd->port);
data |= SYM_MASK(IBSerdesCtrl_0, RXLOSEN);
} else if (!enable && state) {
pr_info("IB%u:%u Turning LOS off\n",
ppd->dd->unit, ppd->port);
data &= ~SYM_MASK(IBSerdesCtrl_0, RXLOSEN);
}
qib_write_kreg_port(ppd, krp_serdesctrl, data);
}
static int serdes_7322_init(struct qib_pportdata *ppd)
{
int ret = 0;
if (ppd->dd->cspec->r1)
ret = serdes_7322_init_old(ppd);
else
ret = serdes_7322_init_new(ppd);
return ret;
}
static int serdes_7322_init_old(struct qib_pportdata *ppd)
{
u32 le_val;
/*
* Initialize the Tx DDS tables. Also done every QSFP event,
* for adapters with QSFP
*/
init_txdds_table(ppd, 0);
/* ensure no tx overrides from earlier driver loads */
qib_write_kreg_port(ppd, krp_tx_deemph_override,
SYM_MASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
reset_tx_deemphasis_override));
/* Patch some SerDes defaults to "Better for IB" */
/* Timing Loop Bandwidth: cdr_timing[11:9] = 0 */
ibsd_wr_allchans(ppd, 2, 0, BMASK(11, 9));
/* Termination: rxtermctrl_r2d addr 11 bits [12:11] = 1 */
ibsd_wr_allchans(ppd, 11, (1 << 11), BMASK(12, 11));
/* Enable LE2: rxle2en_r2a addr 13 bit [6] = 1 */
ibsd_wr_allchans(ppd, 13, (1 << 6), (1 << 6));
/* May be overridden in qsfp_7322_event */
le_val = IS_QME(ppd->dd) ? LE2_QME : LE2_DEFAULT;
ibsd_wr_allchans(ppd, 13, (le_val << 7), BMASK(9, 7));
/* enable LE1 adaptation for all but QME, which is disabled */
le_val = IS_QME(ppd->dd) ? 0 : 1;
ibsd_wr_allchans(ppd, 13, (le_val << 5), (1 << 5));
/* Clear cmode-override, may be set from older driver */
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 10, 0 << 14, 1 << 14);
/* Timing Recovery: rxtapsel addr 5 bits [9:8] = 0 */
ibsd_wr_allchans(ppd, 5, (0 << 8), BMASK(9, 8));
/* setup LoS params; these are subsystem, so chan == 5 */
/* LoS filter threshold_count on, ch 0-3, set to 8 */
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 5, 8 << 11, BMASK(14, 11));
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 7, 8 << 4, BMASK(7, 4));
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 8, 8 << 11, BMASK(14, 11));
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 10, 8 << 4, BMASK(7, 4));
/* LoS filter threshold_count off, ch 0-3, set to 4 */
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 6, 4 << 0, BMASK(3, 0));
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 7, 4 << 8, BMASK(11, 8));
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 9, 4 << 0, BMASK(3, 0));
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 10, 4 << 8, BMASK(11, 8));
/* LoS filter select enabled */
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 9, 1 << 15, 1 << 15);
/* LoS target data: SDR=4, DDR=2, QDR=1 */
ibsd_wr_allchans(ppd, 14, (1 << 3), BMASK(5, 3)); /* QDR */
ibsd_wr_allchans(ppd, 20, (2 << 10), BMASK(12, 10)); /* DDR */
ibsd_wr_allchans(ppd, 20, (4 << 13), BMASK(15, 13)); /* SDR */
serdes_7322_los_enable(ppd, 1);
/* rxbistena; set 0 to avoid effects of it switch later */
ibsd_wr_allchans(ppd, 9, 0 << 15, 1 << 15);
/* Configure 4 DFE taps, and only they adapt */
ibsd_wr_allchans(ppd, 16, 0 << 0, BMASK(1, 0));
/* gain hi stop 32 (22) (6:1) lo stop 7 (10:7) target 22 (13) (15:11) */
le_val = (ppd->dd->cspec->r1 || IS_QME(ppd->dd)) ? 0xb6c0 : 0x6bac;
ibsd_wr_allchans(ppd, 21, le_val, 0xfffe);
/*
* Set receive adaptation mode. SDR and DDR adaptation are
* always on, and QDR is initially enabled; later disabled.
*/
qib_write_kreg_port(ppd, krp_static_adapt_dis(0), 0ULL);
qib_write_kreg_port(ppd, krp_static_adapt_dis(1), 0ULL);
qib_write_kreg_port(ppd, krp_static_adapt_dis(2),
ppd->dd->cspec->r1 ?
QDR_STATIC_ADAPT_DOWN_R1 : QDR_STATIC_ADAPT_DOWN);
ppd->cpspec->qdr_dfe_on = 1;
/* FLoop LOS gate: PPM filter enabled */
ibsd_wr_allchans(ppd, 38, 0 << 10, 1 << 10);
/* rx offset center enabled */
ibsd_wr_allchans(ppd, 12, 1 << 4, 1 << 4);
if (!ppd->dd->cspec->r1) {
ibsd_wr_allchans(ppd, 12, 1 << 12, 1 << 12);
ibsd_wr_allchans(ppd, 12, 2 << 8, 0x0f << 8);
}
/* Set the frequency loop bandwidth to 15 */
ibsd_wr_allchans(ppd, 2, 15 << 5, BMASK(8, 5));
return 0;
}
static int serdes_7322_init_new(struct qib_pportdata *ppd)
{
unsigned long tend;
u32 le_val, rxcaldone;
int chan, chan_done = (1 << SERDES_CHANS) - 1;
/* Clear cmode-override, may be set from older driver */
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 10, 0 << 14, 1 << 14);
/* ensure no tx overrides from earlier driver loads */
qib_write_kreg_port(ppd, krp_tx_deemph_override,
SYM_MASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
reset_tx_deemphasis_override));
/* START OF LSI SUGGESTED SERDES BRINGUP */
/* Reset - Calibration Setup */
/* Stop DFE adaptaion */
ibsd_wr_allchans(ppd, 1, 0, BMASK(9, 1));
/* Disable LE1 */
ibsd_wr_allchans(ppd, 13, 0, BMASK(5, 5));
/* Disable autoadapt for LE1 */
ibsd_wr_allchans(ppd, 1, 0, BMASK(15, 15));
/* Disable LE2 */
ibsd_wr_allchans(ppd, 13, 0, BMASK(6, 6));
/* Disable VGA */
ibsd_wr_allchans(ppd, 5, 0, BMASK(0, 0));
/* Disable AFE Offset Cancel */
ibsd_wr_allchans(ppd, 12, 0, BMASK(12, 12));
/* Disable Timing Loop */
ibsd_wr_allchans(ppd, 2, 0, BMASK(3, 3));
/* Disable Frequency Loop */
ibsd_wr_allchans(ppd, 2, 0, BMASK(4, 4));
/* Disable Baseline Wander Correction */
ibsd_wr_allchans(ppd, 13, 0, BMASK(13, 13));
/* Disable RX Calibration */
ibsd_wr_allchans(ppd, 4, 0, BMASK(10, 10));
/* Disable RX Offset Calibration */
ibsd_wr_allchans(ppd, 12, 0, BMASK(4, 4));
/* Select BB CDR */
ibsd_wr_allchans(ppd, 2, (1 << 15), BMASK(15, 15));
/* CDR Step Size */
ibsd_wr_allchans(ppd, 5, 0, BMASK(9, 8));
/* Enable phase Calibration */
ibsd_wr_allchans(ppd, 12, (1 << 5), BMASK(5, 5));
/* DFE Bandwidth [2:14-12] */
ibsd_wr_allchans(ppd, 2, (4 << 12), BMASK(14, 12));
/* DFE Config (4 taps only) */
ibsd_wr_allchans(ppd, 16, 0, BMASK(1, 0));
/* Gain Loop Bandwidth */
if (!ppd->dd->cspec->r1) {
ibsd_wr_allchans(ppd, 12, 1 << 12, BMASK(12, 12));
ibsd_wr_allchans(ppd, 12, 2 << 8, BMASK(11, 8));
} else {
ibsd_wr_allchans(ppd, 19, (3 << 11), BMASK(13, 11));
}
/* Baseline Wander Correction Gain [13:4-0] (leave as default) */
/* Baseline Wander Correction Gain [3:7-5] (leave as default) */
/* Data Rate Select [5:7-6] (leave as default) */
/* RX Parallel Word Width [3:10-8] (leave as default) */
/* RX REST */
/* Single- or Multi-channel reset */
/* RX Analog reset */
/* RX Digital reset */
ibsd_wr_allchans(ppd, 0, 0, BMASK(15, 13));
msleep(20);
/* RX Analog reset */
ibsd_wr_allchans(ppd, 0, (1 << 14), BMASK(14, 14));
msleep(20);
/* RX Digital reset */
ibsd_wr_allchans(ppd, 0, (1 << 13), BMASK(13, 13));
msleep(20);
/* setup LoS params; these are subsystem, so chan == 5 */
/* LoS filter threshold_count on, ch 0-3, set to 8 */
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 5, 8 << 11, BMASK(14, 11));
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 7, 8 << 4, BMASK(7, 4));
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 8, 8 << 11, BMASK(14, 11));
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 10, 8 << 4, BMASK(7, 4));
/* LoS filter threshold_count off, ch 0-3, set to 4 */
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 6, 4 << 0, BMASK(3, 0));
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 7, 4 << 8, BMASK(11, 8));
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 9, 4 << 0, BMASK(3, 0));
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 10, 4 << 8, BMASK(11, 8));
/* LoS filter select enabled */
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 9, 1 << 15, 1 << 15);
/* LoS target data: SDR=4, DDR=2, QDR=1 */
ibsd_wr_allchans(ppd, 14, (1 << 3), BMASK(5, 3)); /* QDR */
ibsd_wr_allchans(ppd, 20, (2 << 10), BMASK(12, 10)); /* DDR */
ibsd_wr_allchans(ppd, 20, (4 << 13), BMASK(15, 13)); /* SDR */
/* Turn on LOS on initial SERDES init */
serdes_7322_los_enable(ppd, 1);
/* FLoop LOS gate: PPM filter enabled */
ibsd_wr_allchans(ppd, 38, 0 << 10, 1 << 10);
/* RX LATCH CALIBRATION */
/* Enable Eyefinder Phase Calibration latch */
ibsd_wr_allchans(ppd, 15, 1, BMASK(0, 0));
/* Enable RX Offset Calibration latch */
ibsd_wr_allchans(ppd, 12, (1 << 4), BMASK(4, 4));
msleep(20);
/* Start Calibration */
ibsd_wr_allchans(ppd, 4, (1 << 10), BMASK(10, 10));
tend = jiffies + msecs_to_jiffies(500);
while (chan_done && !time_is_before_jiffies(tend)) {
msleep(20);
for (chan = 0; chan < SERDES_CHANS; ++chan) {
rxcaldone = ahb_mod(ppd->dd, IBSD(ppd->hw_pidx),
(chan + (chan >> 1)),
25, 0, 0);
if ((~rxcaldone & (u32)BMASK(9, 9)) == 0 &&
(~chan_done & (1 << chan)) == 0)
chan_done &= ~(1 << chan);
}
}
if (chan_done) {
pr_info("Serdes %d calibration not done after .5 sec: 0x%x\n",
IBSD(ppd->hw_pidx), chan_done);
} else {
for (chan = 0; chan < SERDES_CHANS; ++chan) {
rxcaldone = ahb_mod(ppd->dd, IBSD(ppd->hw_pidx),
(chan + (chan >> 1)),
25, 0, 0);
if ((~rxcaldone & (u32)BMASK(10, 10)) == 0)
pr_info("Serdes %d chan %d calibration failed\n",
IBSD(ppd->hw_pidx), chan);
}
}
/* Turn off Calibration */
ibsd_wr_allchans(ppd, 4, 0, BMASK(10, 10));
msleep(20);
/* BRING RX UP */
/* Set LE2 value (May be overridden in qsfp_7322_event) */
le_val = IS_QME(ppd->dd) ? LE2_QME : LE2_DEFAULT;
ibsd_wr_allchans(ppd, 13, (le_val << 7), BMASK(9, 7));
/* Set LE2 Loop bandwidth */
ibsd_wr_allchans(ppd, 3, (7 << 5), BMASK(7, 5));
/* Enable LE2 */
ibsd_wr_allchans(ppd, 13, (1 << 6), BMASK(6, 6));
msleep(20);
/* Enable H0 only */
ibsd_wr_allchans(ppd, 1, 1, BMASK(9, 1));
/* gain hi stop 32 (22) (6:1) lo stop 7 (10:7) target 22 (13) (15:11) */
le_val = (ppd->dd->cspec->r1 || IS_QME(ppd->dd)) ? 0xb6c0 : 0x6bac;
ibsd_wr_allchans(ppd, 21, le_val, 0xfffe);
/* Enable VGA */
ibsd_wr_allchans(ppd, 5, 0, BMASK(0, 0));
msleep(20);
/* Set Frequency Loop Bandwidth */
ibsd_wr_allchans(ppd, 2, (15 << 5), BMASK(8, 5));
/* Enable Frequency Loop */
ibsd_wr_allchans(ppd, 2, (1 << 4), BMASK(4, 4));
/* Set Timing Loop Bandwidth */
ibsd_wr_allchans(ppd, 2, 0, BMASK(11, 9));
/* Enable Timing Loop */
ibsd_wr_allchans(ppd, 2, (1 << 3), BMASK(3, 3));
msleep(50);
/* Enable DFE
* Set receive adaptation mode. SDR and DDR adaptation are
* always on, and QDR is initially enabled; later disabled.
*/
qib_write_kreg_port(ppd, krp_static_adapt_dis(0), 0ULL);
qib_write_kreg_port(ppd, krp_static_adapt_dis(1), 0ULL);
qib_write_kreg_port(ppd, krp_static_adapt_dis(2),
ppd->dd->cspec->r1 ?
QDR_STATIC_ADAPT_DOWN_R1 : QDR_STATIC_ADAPT_DOWN);
ppd->cpspec->qdr_dfe_on = 1;
/* Disable LE1 */
ibsd_wr_allchans(ppd, 13, (0 << 5), (1 << 5));
/* Disable auto adapt for LE1 */
ibsd_wr_allchans(ppd, 1, (0 << 15), BMASK(15, 15));
msleep(20);
/* Enable AFE Offset Cancel */
ibsd_wr_allchans(ppd, 12, (1 << 12), BMASK(12, 12));
/* Enable Baseline Wander Correction */
ibsd_wr_allchans(ppd, 12, (1 << 13), BMASK(13, 13));
/* Termination: rxtermctrl_r2d addr 11 bits [12:11] = 1 */
ibsd_wr_allchans(ppd, 11, (1 << 11), BMASK(12, 11));
/* VGA output common mode */
ibsd_wr_allchans(ppd, 12, (3 << 2), BMASK(3, 2));
/*
* Initialize the Tx DDS tables. Also done every QSFP event,
* for adapters with QSFP
*/
init_txdds_table(ppd, 0);
return 0;
}
/* start adjust QMH serdes parameters */
static void set_man_code(struct qib_pportdata *ppd, int chan, int code)
{
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)),
9, code << 9, 0x3f << 9);
}
static void set_man_mode_h1(struct qib_pportdata *ppd, int chan,
int enable, u32 tapenable)
{
if (enable)
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)),
1, 3 << 10, 0x1f << 10);
else
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)),
1, 0, 0x1f << 10);
}
/* Set clock to 1, 0, 1, 0 */
static void clock_man(struct qib_pportdata *ppd, int chan)
{
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)),
4, 0x4000, 0x4000);
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)),
4, 0, 0x4000);
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)),
4, 0x4000, 0x4000);
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)),
4, 0, 0x4000);
}
/*
* write the current Tx serdes pre,post,main,amp settings into the serdes.
* The caller must pass the settings appropriate for the current speed,
* or not care if they are correct for the current speed.
*/
static void write_tx_serdes_param(struct qib_pportdata *ppd,
struct txdds_ent *txdds)
{
u64 deemph;
deemph = qib_read_kreg_port(ppd, krp_tx_deemph_override);
/* field names for amp, main, post, pre, respectively */
deemph &= ~(SYM_MASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0, txampcntl_d2a) |
SYM_MASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0, txc0_ena) |
SYM_MASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0, txcp1_ena) |
SYM_MASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0, txcn1_ena));
deemph |= SYM_MASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
tx_override_deemphasis_select);
deemph |= (txdds->amp & SYM_RMASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
txampcntl_d2a)) << SYM_LSB(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
txampcntl_d2a);
deemph |= (txdds->main & SYM_RMASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
txc0_ena)) << SYM_LSB(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
txc0_ena);
deemph |= (txdds->post & SYM_RMASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
txcp1_ena)) << SYM_LSB(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
txcp1_ena);
deemph |= (txdds->pre & SYM_RMASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
txcn1_ena)) << SYM_LSB(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
txcn1_ena);
qib_write_kreg_port(ppd, krp_tx_deemph_override, deemph);
}
/*
* Set the parameters for mez cards on link bounce, so they are
* always exactly what was requested. Similar logic to init_txdds
* but does just the serdes.
*/
static void adj_tx_serdes(struct qib_pportdata *ppd)
{
const struct txdds_ent *sdr_dds, *ddr_dds, *qdr_dds;
struct txdds_ent *dds;
find_best_ent(ppd, &sdr_dds, &ddr_dds, &qdr_dds, 1);
dds = (struct txdds_ent *)(ppd->link_speed_active == QIB_IB_QDR ?
qdr_dds : (ppd->link_speed_active == QIB_IB_DDR ?
ddr_dds : sdr_dds));
write_tx_serdes_param(ppd, dds);
}
/* set QDR forced value for H1, if needed */
static void force_h1(struct qib_pportdata *ppd)
{
int chan;
ppd->cpspec->qdr_reforce = 0;
if (!ppd->dd->cspec->r1)
return;
for (chan = 0; chan < SERDES_CHANS; chan++) {
set_man_mode_h1(ppd, chan, 1, 0);
set_man_code(ppd, chan, ppd->cpspec->h1_val);
clock_man(ppd, chan);
set_man_mode_h1(ppd, chan, 0, 0);
}
}
#define SJA_EN SYM_MASK(SPC_JTAG_ACCESS_REG, SPC_JTAG_ACCESS_EN)
#define BISTEN_LSB SYM_LSB(SPC_JTAG_ACCESS_REG, bist_en)
#define R_OPCODE_LSB 3
#define R_OP_NOP 0
#define R_OP_SHIFT 2
#define R_OP_UPDATE 3
#define R_TDI_LSB 2
#define R_TDO_LSB 1
#define R_RDY 1
static int qib_r_grab(struct qib_devdata *dd)
{
u64 val = SJA_EN;
qib_write_kreg(dd, kr_r_access, val);
qib_read_kreg32(dd, kr_scratch);
return 0;
}
/* qib_r_wait_for_rdy() not only waits for the ready bit, it
* returns the current state of R_TDO
*/
static int qib_r_wait_for_rdy(struct qib_devdata *dd)
{
u64 val;
int timeout;
for (timeout = 0; timeout < 100 ; ++timeout) {
val = qib_read_kreg32(dd, kr_r_access);
if (val & R_RDY)
return (val >> R_TDO_LSB) & 1;
}
return -1;
}
static int qib_r_shift(struct qib_devdata *dd, int bisten,
int len, u8 *inp, u8 *outp)
{
u64 valbase, val;
int ret, pos;
valbase = SJA_EN | (bisten << BISTEN_LSB) |
(R_OP_SHIFT << R_OPCODE_LSB);
ret = qib_r_wait_for_rdy(dd);
if (ret < 0)
goto bail;
for (pos = 0; pos < len; ++pos) {
val = valbase;
if (outp) {
outp[pos >> 3] &= ~(1 << (pos & 7));
outp[pos >> 3] |= (ret << (pos & 7));
}
if (inp) {
int tdi = inp[pos >> 3] >> (pos & 7);
val |= ((tdi & 1) << R_TDI_LSB);
}
qib_write_kreg(dd, kr_r_access, val);
qib_read_kreg32(dd, kr_scratch);
ret = qib_r_wait_for_rdy(dd);
if (ret < 0)
break;
}
/* Restore to NOP between operations. */
val = SJA_EN | (bisten << BISTEN_LSB);
qib_write_kreg(dd, kr_r_access, val);
qib_read_kreg32(dd, kr_scratch);
ret = qib_r_wait_for_rdy(dd);
if (ret >= 0)
ret = pos;
bail:
return ret;
}
static int qib_r_update(struct qib_devdata *dd, int bisten)
{
u64 val;
int ret;
val = SJA_EN | (bisten << BISTEN_LSB) | (R_OP_UPDATE << R_OPCODE_LSB);
ret = qib_r_wait_for_rdy(dd);
if (ret >= 0) {
qib_write_kreg(dd, kr_r_access, val);
qib_read_kreg32(dd, kr_scratch);
}
return ret;
}
#define BISTEN_PORT_SEL 15
#define LEN_PORT_SEL 625
#define BISTEN_AT 17
#define LEN_AT 156
#define BISTEN_ETM 16
#define LEN_ETM 632
#define BIT2BYTE(x) (((x) + BITS_PER_BYTE - 1) / BITS_PER_BYTE)
/* these are common for all IB port use cases. */
static u8 reset_at[BIT2BYTE(LEN_AT)] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00,
};
static u8 reset_atetm[BIT2BYTE(LEN_ETM)] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x80, 0xe3, 0x81, 0x73, 0x3c, 0x70, 0x8e,
0x07, 0xce, 0xf1, 0xc0, 0x39, 0x1e, 0x38, 0xc7, 0x03, 0xe7,
0x78, 0xe0, 0x1c, 0x0f, 0x9c, 0x7f, 0x80, 0x73, 0x0f, 0x70,
0xde, 0x01, 0xce, 0x39, 0xc0, 0xf9, 0x06, 0x38, 0xd7, 0x00,
0xe7, 0x19, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,
};
static u8 at[BIT2BYTE(LEN_AT)] = {
0x00, 0x00, 0x18, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00,
};
/* used for IB1 or IB2, only one in use */
static u8 atetm_1port[BIT2BYTE(LEN_ETM)] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x10, 0xf2, 0x80, 0x83, 0x1e, 0x38, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x50, 0xf4, 0x41, 0x00, 0x18, 0x78, 0xc8, 0x03,
0x07, 0x7b, 0xa0, 0x3e, 0x00, 0x02, 0x00, 0x00, 0x18, 0x00,
0x18, 0x00, 0x00, 0x00, 0x00, 0x4b, 0x00, 0x00, 0x00,
};
/* used when both IB1 and IB2 are in use */
static u8 atetm_2port[BIT2BYTE(LEN_ETM)] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x79,
0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xf8, 0x80, 0x83, 0x1e, 0x38, 0xe0, 0x03, 0x05,
0x7b, 0xa0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80,
0xa2, 0x0f, 0x50, 0xf4, 0x41, 0x00, 0x18, 0x78, 0xd1, 0x07,
0x02, 0x7c, 0x80, 0x3e, 0x00, 0x02, 0x00, 0x00, 0x3e, 0x00,
0x02, 0x00, 0x00, 0x00, 0x00, 0x64, 0x00, 0x00, 0x00,
};
/* used when only IB1 is in use */
static u8 portsel_port1[BIT2BYTE(LEN_PORT_SEL)] = {
0x32, 0x65, 0xa4, 0x7b, 0x10, 0x98, 0xdc, 0xfe, 0x13, 0x13,
0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x73, 0x0c, 0x0c, 0x0c,
0x0c, 0x0c, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
0x13, 0x78, 0x78, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x74, 0x32,
0x32, 0x32, 0x32, 0x32, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14,
0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14,
0x14, 0x14, 0x9f, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
};
/* used when only IB2 is in use */
static u8 portsel_port2[BIT2BYTE(LEN_PORT_SEL)] = {
0x32, 0x65, 0xa4, 0x7b, 0x10, 0x98, 0xdc, 0xfe, 0x39, 0x39,
0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x73, 0x32, 0x32, 0x32,
0x32, 0x32, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39,
0x39, 0x78, 0x78, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39,
0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x74, 0x32,
0x32, 0x32, 0x32, 0x32, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a,
0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a,
0x3a, 0x3a, 0x9f, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01,
};
/* used when both IB1 and IB2 are in use */
static u8 portsel_2port[BIT2BYTE(LEN_PORT_SEL)] = {
0x32, 0xba, 0x54, 0x76, 0x10, 0x98, 0xdc, 0xfe, 0x13, 0x13,
0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x73, 0x0c, 0x0c, 0x0c,
0x0c, 0x0c, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x74, 0x32,
0x32, 0x32, 0x32, 0x32, 0x14, 0x14, 0x14, 0x14, 0x14, 0x3a,
0x3a, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14,
0x14, 0x14, 0x9f, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
};
/*
* Do setup to properly handle IB link recovery; if port is zero, we
* are initializing to cover both ports; otherwise we are initializing
* to cover a single port card, or the port has reached INIT and we may
* need to switch coverage types.
*/
static void setup_7322_link_recovery(struct qib_pportdata *ppd, u32 both)
{
u8 *portsel, *etm;
struct qib_devdata *dd = ppd->dd;
if (!ppd->dd->cspec->r1)
return;
if (!both) {
dd->cspec->recovery_ports_initted++;
ppd->cpspec->recovery_init = 1;
}
if (!both && dd->cspec->recovery_ports_initted == 1) {
portsel = ppd->port == 1 ? portsel_port1 : portsel_port2;
etm = atetm_1port;
} else {
portsel = portsel_2port;
etm = atetm_2port;
}
if (qib_r_grab(dd) < 0 ||
qib_r_shift(dd, BISTEN_ETM, LEN_ETM, reset_atetm, NULL) < 0 ||
qib_r_update(dd, BISTEN_ETM) < 0 ||
qib_r_shift(dd, BISTEN_AT, LEN_AT, reset_at, NULL) < 0 ||
qib_r_update(dd, BISTEN_AT) < 0 ||
qib_r_shift(dd, BISTEN_PORT_SEL, LEN_PORT_SEL,
portsel, NULL) < 0 ||
qib_r_update(dd, BISTEN_PORT_SEL) < 0 ||
qib_r_shift(dd, BISTEN_AT, LEN_AT, at, NULL) < 0 ||
qib_r_update(dd, BISTEN_AT) < 0 ||
qib_r_shift(dd, BISTEN_ETM, LEN_ETM, etm, NULL) < 0 ||
qib_r_update(dd, BISTEN_ETM) < 0)
qib_dev_err(dd, "Failed IB link recovery setup\n");
}
static void check_7322_rxe_status(struct qib_pportdata *ppd)
{
struct qib_devdata *dd = ppd->dd;
u64 fmask;
if (dd->cspec->recovery_ports_initted != 1)
return; /* rest doesn't apply to dualport */
qib_write_kreg(dd, kr_control, dd->control |
SYM_MASK(Control, FreezeMode));
(void)qib_read_kreg64(dd, kr_scratch);
udelay(3); /* ibcreset asserted 400ns, be sure that's over */
fmask = qib_read_kreg64(dd, kr_act_fmask);
if (!fmask) {
/*
* require a powercycle before we'll work again, and make
* sure we get no more interrupts, and don't turn off
* freeze.
*/
ppd->dd->cspec->stay_in_freeze = 1;
qib_7322_set_intr_state(ppd->dd, 0);
qib_write_kreg(dd, kr_fmask, 0ULL);
qib_dev_err(dd, "HCA unusable until powercycled\n");
return; /* eventually reset */
}
qib_write_kreg(ppd->dd, kr_hwerrclear,
SYM_MASK(HwErrClear, IBSerdesPClkNotDetectClear_1));
/* don't do the full clear_freeze(), not needed for this */
qib_write_kreg(dd, kr_control, dd->control);
qib_read_kreg32(dd, kr_scratch);
/* take IBC out of reset */
if (ppd->link_speed_supported) {
ppd->cpspec->ibcctrl_a &=
~SYM_MASK(IBCCtrlA_0, IBStatIntReductionEn);
qib_write_kreg_port(ppd, krp_ibcctrl_a,
ppd->cpspec->ibcctrl_a);
qib_read_kreg32(dd, kr_scratch);
if (ppd->lflags & QIBL_IB_LINK_DISABLED)
qib_set_ib_7322_lstate(ppd, 0,
QLOGIC_IB_IBCC_LINKINITCMD_DISABLE);
}
}
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