1334 lines
43 KiB
C
1334 lines
43 KiB
C
/*
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* Core definitions and data structures shareable across OS platforms.
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*
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* Copyright (c) 1994-2001 Justin T. Gibbs.
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* Copyright (c) 2000-2001 Adaptec Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*
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* $Id: //depot/aic7xxx/aic7xxx/aic7xxx.h#85 $
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*
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* $FreeBSD$
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*/
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#ifndef _AIC7XXX_H_
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#define _AIC7XXX_H_
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/* Register Definitions */
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#include "aic7xxx_reg.h"
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/************************* Forward Declarations *******************************/
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struct ahc_platform_data;
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struct scb_platform_data;
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struct seeprom_descriptor;
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/****************************** Useful Macros *********************************/
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#ifndef TRUE
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#define TRUE 1
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#endif
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#ifndef FALSE
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#define FALSE 0
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#endif
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#define ALL_CHANNELS '\0'
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#define ALL_TARGETS_MASK 0xFFFF
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#define INITIATOR_WILDCARD (~0)
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#define SCSIID_TARGET(ahc, scsiid) \
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(((scsiid) & ((((ahc)->features & AHC_TWIN) != 0) ? TWIN_TID : TID)) \
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>> TID_SHIFT)
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#define SCSIID_OUR_ID(scsiid) \
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((scsiid) & OID)
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#define SCSIID_CHANNEL(ahc, scsiid) \
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((((ahc)->features & AHC_TWIN) != 0) \
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? ((((scsiid) & TWIN_CHNLB) != 0) ? 'B' : 'A') \
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: 'A')
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#define SCB_IS_SCSIBUS_B(ahc, scb) \
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(SCSIID_CHANNEL(ahc, (scb)->hscb->scsiid) == 'B')
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#define SCB_GET_OUR_ID(scb) \
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SCSIID_OUR_ID((scb)->hscb->scsiid)
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#define SCB_GET_TARGET(ahc, scb) \
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SCSIID_TARGET((ahc), (scb)->hscb->scsiid)
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#define SCB_GET_CHANNEL(ahc, scb) \
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SCSIID_CHANNEL(ahc, (scb)->hscb->scsiid)
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#define SCB_GET_LUN(scb) \
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((scb)->hscb->lun & LID)
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#define SCB_GET_TARGET_OFFSET(ahc, scb) \
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(SCB_GET_TARGET(ahc, scb) + (SCB_IS_SCSIBUS_B(ahc, scb) ? 8 : 0))
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#define SCB_GET_TARGET_MASK(ahc, scb) \
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(0x01 << (SCB_GET_TARGET_OFFSET(ahc, scb)))
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#ifdef AHC_DEBUG
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#define SCB_IS_SILENT(scb) \
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((ahc_debug & AHC_SHOW_MASKED_ERRORS) == 0 \
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&& (((scb)->flags & SCB_SILENT) != 0))
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#else
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#define SCB_IS_SILENT(scb) \
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(((scb)->flags & SCB_SILENT) != 0)
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#endif
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#define TCL_TARGET_OFFSET(tcl) \
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((((tcl) >> 4) & TID) >> 4)
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#define TCL_LUN(tcl) \
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(tcl & (AHC_NUM_LUNS - 1))
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#define BUILD_TCL(scsiid, lun) \
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((lun) | (((scsiid) & TID) << 4))
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#ifndef AHC_TARGET_MODE
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#undef AHC_TMODE_ENABLE
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#define AHC_TMODE_ENABLE 0
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#endif
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/**************************** Driver Constants ********************************/
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/*
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* The maximum number of supported targets.
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*/
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#define AHC_NUM_TARGETS 16
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/*
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* The maximum number of supported luns.
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* The identify message only supports 64 luns in SPI3.
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* You can have 2^64 luns when information unit transfers are enabled,
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* but it is doubtful this driver will ever support IUTs.
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*/
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#define AHC_NUM_LUNS 64
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/*
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* The maximum transfer per S/G segment.
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*/
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#define AHC_MAXTRANSFER_SIZE 0x00ffffff /* limited by 24bit counter */
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/*
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* The maximum amount of SCB storage in hardware on a controller.
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* This value represents an upper bound. Controllers vary in the number
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* they actually support.
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*/
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#define AHC_SCB_MAX 255
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/*
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* The maximum number of concurrent transactions supported per driver instance.
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* Sequencer Control Blocks (SCBs) store per-transaction information. Although
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* the space for SCBs on the host adapter varies by model, the driver will
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* page the SCBs between host and controller memory as needed. We are limited
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* to 253 because:
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* 1) The 8bit nature of the RISC engine holds us to an 8bit value.
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* 2) We reserve one value, 255, to represent the invalid element.
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* 3) Our input queue scheme requires one SCB to always be reserved
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* in advance of queuing any SCBs. This takes us down to 254.
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* 4) To handle our output queue correctly on machines that only
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* support 32bit stores, we must clear the array 4 bytes at a
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* time. To avoid colliding with a DMA write from the sequencer,
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* we must be sure that 4 slots are empty when we write to clear
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* the queue. This reduces us to 253 SCBs: 1 that just completed
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* and the known three additional empty slots in the queue that
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* precede it.
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*/
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#define AHC_MAX_QUEUE 253
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/*
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* The maximum amount of SCB storage we allocate in host memory. This
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* number should reflect the 1 additional SCB we require to handle our
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* qinfifo mechanism.
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*/
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#define AHC_SCB_MAX_ALLOC (AHC_MAX_QUEUE+1)
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/*
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* Ring Buffer of incoming target commands.
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* We allocate 256 to simplify the logic in the sequencer
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* by using the natural wrap point of an 8bit counter.
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*/
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#define AHC_TMODE_CMDS 256
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/* Reset line assertion time in us */
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#define AHC_BUSRESET_DELAY 25
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/******************* Chip Characteristics/Operating Settings *****************/
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/*
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* Chip Type
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* The chip order is from least sophisticated to most sophisticated.
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*/
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typedef enum {
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AHC_NONE = 0x0000,
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AHC_CHIPID_MASK = 0x00FF,
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AHC_AIC7770 = 0x0001,
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AHC_AIC7850 = 0x0002,
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AHC_AIC7855 = 0x0003,
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AHC_AIC7859 = 0x0004,
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AHC_AIC7860 = 0x0005,
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AHC_AIC7870 = 0x0006,
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AHC_AIC7880 = 0x0007,
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AHC_AIC7895 = 0x0008,
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AHC_AIC7895C = 0x0009,
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AHC_AIC7890 = 0x000a,
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AHC_AIC7896 = 0x000b,
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AHC_AIC7892 = 0x000c,
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AHC_AIC7899 = 0x000d,
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AHC_VL = 0x0100, /* Bus type VL */
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AHC_EISA = 0x0200, /* Bus type EISA */
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AHC_PCI = 0x0400, /* Bus type PCI */
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AHC_BUS_MASK = 0x0F00
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} ahc_chip;
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/*
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* Features available in each chip type.
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*/
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typedef enum {
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AHC_FENONE = 0x00000,
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AHC_ULTRA = 0x00001, /* Supports 20MHz Transfers */
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AHC_ULTRA2 = 0x00002, /* Supports 40MHz Transfers */
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AHC_WIDE = 0x00004, /* Wide Channel */
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AHC_TWIN = 0x00008, /* Twin Channel */
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AHC_MORE_SRAM = 0x00010, /* 80 bytes instead of 64 */
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AHC_CMD_CHAN = 0x00020, /* Has a Command DMA Channel */
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AHC_QUEUE_REGS = 0x00040, /* Has Queue management registers */
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AHC_SG_PRELOAD = 0x00080, /* Can perform auto-SG preload */
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AHC_SPIOCAP = 0x00100, /* Has a Serial Port I/O Cap Register */
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AHC_MULTI_TID = 0x00200, /* Has bitmask of TIDs for select-in */
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AHC_HS_MAILBOX = 0x00400, /* Has HS_MAILBOX register */
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AHC_DT = 0x00800, /* Double Transition transfers */
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AHC_NEW_TERMCTL = 0x01000, /* Newer termination scheme */
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AHC_MULTI_FUNC = 0x02000, /* Multi-Function Twin Channel Device */
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AHC_LARGE_SCBS = 0x04000, /* 64byte SCBs */
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AHC_AUTORATE = 0x08000, /* Automatic update of SCSIRATE/OFFSET*/
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AHC_AUTOPAUSE = 0x10000, /* Automatic pause on register access */
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AHC_TARGETMODE = 0x20000, /* Has tested target mode support */
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AHC_MULTIROLE = 0x40000, /* Space for two roles at a time */
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AHC_REMOVABLE = 0x80000, /* Hot-Swap supported */
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AHC_HVD = 0x100000, /* HVD rather than SE */
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AHC_AIC7770_FE = AHC_FENONE,
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/*
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* The real 7850 does not support Ultra modes, but there are
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* several cards that use the generic 7850 PCI ID even though
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* they are using an Ultra capable chip (7859/7860). We start
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* out with the AHC_ULTRA feature set and then check the DEVSTATUS
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* register to determine if the capability is really present.
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*/
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AHC_AIC7850_FE = AHC_SPIOCAP|AHC_AUTOPAUSE|AHC_TARGETMODE|AHC_ULTRA,
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AHC_AIC7860_FE = AHC_AIC7850_FE,
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AHC_AIC7870_FE = AHC_TARGETMODE|AHC_AUTOPAUSE,
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AHC_AIC7880_FE = AHC_AIC7870_FE|AHC_ULTRA,
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/*
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* Although we have space for both the initiator and
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* target roles on ULTRA2 chips, we currently disable
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* the initiator role to allow multi-scsi-id target mode
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* configurations. We can only respond on the same SCSI
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* ID as our initiator role if we allow initiator operation.
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* At some point, we should add a configuration knob to
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* allow both roles to be loaded.
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*/
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AHC_AIC7890_FE = AHC_MORE_SRAM|AHC_CMD_CHAN|AHC_ULTRA2
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|AHC_QUEUE_REGS|AHC_SG_PRELOAD|AHC_MULTI_TID
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|AHC_HS_MAILBOX|AHC_NEW_TERMCTL|AHC_LARGE_SCBS
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|AHC_TARGETMODE,
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AHC_AIC7892_FE = AHC_AIC7890_FE|AHC_DT|AHC_AUTORATE|AHC_AUTOPAUSE,
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AHC_AIC7895_FE = AHC_AIC7880_FE|AHC_MORE_SRAM|AHC_AUTOPAUSE
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|AHC_CMD_CHAN|AHC_MULTI_FUNC|AHC_LARGE_SCBS,
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AHC_AIC7895C_FE = AHC_AIC7895_FE|AHC_MULTI_TID,
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AHC_AIC7896_FE = AHC_AIC7890_FE|AHC_MULTI_FUNC,
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AHC_AIC7899_FE = AHC_AIC7892_FE|AHC_MULTI_FUNC
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} ahc_feature;
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/*
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* Bugs in the silicon that we work around in software.
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*/
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typedef enum {
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AHC_BUGNONE = 0x00,
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/*
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* On all chips prior to the U2 product line,
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* the WIDEODD S/G segment feature does not
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* work during scsi->HostBus transfers.
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*/
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AHC_TMODE_WIDEODD_BUG = 0x01,
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/*
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* On the aic7890/91 Rev 0 chips, the autoflush
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* feature does not work. A manual flush of
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* the DMA FIFO is required.
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*/
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AHC_AUTOFLUSH_BUG = 0x02,
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/*
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* On many chips, cacheline streaming does not work.
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*/
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AHC_CACHETHEN_BUG = 0x04,
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/*
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* On the aic7896/97 chips, cacheline
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* streaming must be enabled.
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*/
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AHC_CACHETHEN_DIS_BUG = 0x08,
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/*
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* PCI 2.1 Retry failure on non-empty data fifo.
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*/
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AHC_PCI_2_1_RETRY_BUG = 0x10,
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/*
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* Controller does not handle cacheline residuals
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* properly on S/G segments if PCI MWI instructions
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* are allowed.
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*/
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AHC_PCI_MWI_BUG = 0x20,
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/*
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* An SCB upload using the SCB channel's
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* auto array entry copy feature may
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* corrupt data. This appears to only
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* occur on 66MHz systems.
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*/
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AHC_SCBCHAN_UPLOAD_BUG = 0x40
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} ahc_bug;
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/*
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* Configuration specific settings.
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* The driver determines these settings by probing the
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* chip/controller's configuration.
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*/
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typedef enum {
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AHC_FNONE = 0x000,
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AHC_PRIMARY_CHANNEL = 0x003, /*
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* The channel that should
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* be probed first.
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*/
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AHC_USEDEFAULTS = 0x004, /*
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* For cards without an seeprom
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* or a BIOS to initialize the chip's
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* SRAM, we use the default target
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* settings.
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*/
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AHC_SEQUENCER_DEBUG = 0x008,
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AHC_SHARED_SRAM = 0x010,
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AHC_LARGE_SEEPROM = 0x020, /* Uses C56_66 not C46 */
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AHC_RESET_BUS_A = 0x040,
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AHC_RESET_BUS_B = 0x080,
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AHC_EXTENDED_TRANS_A = 0x100,
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AHC_EXTENDED_TRANS_B = 0x200,
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AHC_TERM_ENB_A = 0x400,
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AHC_TERM_ENB_B = 0x800,
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AHC_INITIATORROLE = 0x1000, /*
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* Allow initiator operations on
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* this controller.
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*/
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AHC_TARGETROLE = 0x2000, /*
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* Allow target operations on this
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* controller.
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*/
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AHC_NEWEEPROM_FMT = 0x4000,
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AHC_TQINFIFO_BLOCKED = 0x10000, /* Blocked waiting for ATIOs */
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AHC_INT50_SPEEDFLEX = 0x20000, /*
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* Internal 50pin connector
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* sits behind an aic3860
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*/
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AHC_SCB_BTT = 0x40000, /*
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* The busy targets table is
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* stored in SCB space rather
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* than SRAM.
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*/
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AHC_BIOS_ENABLED = 0x80000,
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AHC_ALL_INTERRUPTS = 0x100000,
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AHC_PAGESCBS = 0x400000, /* Enable SCB paging */
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AHC_EDGE_INTERRUPT = 0x800000, /* Device uses edge triggered ints */
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AHC_39BIT_ADDRESSING = 0x1000000, /* Use 39 bit addressing scheme. */
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AHC_LSCBS_ENABLED = 0x2000000, /* 64Byte SCBs enabled */
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AHC_SCB_CONFIG_USED = 0x4000000, /* No SEEPROM but SCB2 had info. */
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AHC_NO_BIOS_INIT = 0x8000000, /* No BIOS left over settings. */
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AHC_DISABLE_PCI_PERR = 0x10000000,
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AHC_HAS_TERM_LOGIC = 0x20000000
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} ahc_flag;
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/************************* Hardware SCB Definition ***************************/
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/*
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* The driver keeps up to MAX_SCB scb structures per card in memory. The SCB
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* consists of a "hardware SCB" mirroring the fields available on the card
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* and additional information the kernel stores for each transaction.
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*
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* To minimize space utilization, a portion of the hardware scb stores
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* different data during different portions of a SCSI transaction.
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* As initialized by the host driver for the initiator role, this area
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* contains the SCSI cdb (or a pointer to the cdb) to be executed. After
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* the cdb has been presented to the target, this area serves to store
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* residual transfer information and the SCSI status byte.
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* For the target role, the contents of this area do not change, but
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* still serve a different purpose than for the initiator role. See
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* struct target_data for details.
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*/
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/*
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* Status information embedded in the shared poriton of
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* an SCB after passing the cdb to the target. The kernel
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* driver will only read this data for transactions that
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* complete abnormally (non-zero status byte).
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*/
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struct status_pkt {
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uint32_t residual_datacnt; /* Residual in the current S/G seg */
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uint32_t residual_sg_ptr; /* The next S/G for this transfer */
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uint8_t scsi_status; /* Standard SCSI status byte */
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};
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/*
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* Target mode version of the shared data SCB segment.
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*/
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struct target_data {
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uint32_t residual_datacnt; /* Residual in the current S/G seg */
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uint32_t residual_sg_ptr; /* The next S/G for this transfer */
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uint8_t scsi_status; /* SCSI status to give to initiator */
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uint8_t target_phases; /* Bitmap of phases to execute */
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uint8_t data_phase; /* Data-In or Data-Out */
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uint8_t initiator_tag; /* Initiator's transaction tag */
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};
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struct hardware_scb {
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/*0*/ union {
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/*
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* If the cdb is 12 bytes or less, we embed it directly
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* in the SCB. For longer cdbs, we embed the address
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* of the cdb payload as seen by the chip and a DMA
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* is used to pull it in.
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*/
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uint8_t cdb[12];
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uint32_t cdb_ptr;
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struct status_pkt status;
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struct target_data tdata;
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} shared_data;
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/*
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* A word about residuals.
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* The scb is presented to the sequencer with the dataptr and datacnt
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* fields initialized to the contents of the first S/G element to
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* transfer. The sgptr field is initialized to the bus address for
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* the S/G element that follows the first in the in core S/G array
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* or'ed with the SG_FULL_RESID flag. Sgptr may point to an invalid
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* S/G entry for this transfer (single S/G element transfer with the
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* first elements address and length preloaded in the dataptr/datacnt
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* fields). If no transfer is to occur, sgptr is set to SG_LIST_NULL.
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* The SG_FULL_RESID flag ensures that the residual will be correctly
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* noted even if no data transfers occur. Once the data phase is entered,
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* the residual sgptr and datacnt are loaded from the sgptr and the
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* datacnt fields. After each S/G element's dataptr and length are
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* loaded into the hardware, the residual sgptr is advanced. After
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* each S/G element is expired, its datacnt field is checked to see
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* if the LAST_SEG flag is set. If so, SG_LIST_NULL is set in the
|
|
* residual sg ptr and the transfer is considered complete. If the
|
|
* sequencer determines that there is a residual in the tranfer, it
|
|
* will set the SG_RESID_VALID flag in sgptr and dma the scb back into
|
|
* host memory. To sumarize:
|
|
*
|
|
* Sequencer:
|
|
* o A residual has occurred if SG_FULL_RESID is set in sgptr,
|
|
* or residual_sgptr does not have SG_LIST_NULL set.
|
|
*
|
|
* o We are transfering the last segment if residual_datacnt has
|
|
* the SG_LAST_SEG flag set.
|
|
*
|
|
* Host:
|
|
* o A residual has occurred if a completed scb has the
|
|
* SG_RESID_VALID flag set.
|
|
*
|
|
* o residual_sgptr and sgptr refer to the "next" sg entry
|
|
* and so may point beyond the last valid sg entry for the
|
|
* transfer.
|
|
*/
|
|
/*12*/ uint32_t dataptr;
|
|
/*16*/ uint32_t datacnt; /*
|
|
* Byte 3 (numbered from 0) of
|
|
* the datacnt is really the
|
|
* 4th byte in that data address.
|
|
*/
|
|
/*20*/ uint32_t sgptr;
|
|
#define SG_PTR_MASK 0xFFFFFFF8
|
|
/*24*/ uint8_t control; /* See SCB_CONTROL in aic7xxx.reg for details */
|
|
/*25*/ uint8_t scsiid; /* what to load in the SCSIID register */
|
|
/*26*/ uint8_t lun;
|
|
/*27*/ uint8_t tag; /*
|
|
* Index into our kernel SCB array.
|
|
* Also used as the tag for tagged I/O
|
|
*/
|
|
/*28*/ uint8_t cdb_len;
|
|
/*29*/ uint8_t scsirate; /* Value for SCSIRATE register */
|
|
/*30*/ uint8_t scsioffset; /* Value for SCSIOFFSET register */
|
|
/*31*/ uint8_t next; /*
|
|
* Used for threading SCBs in the
|
|
* "Waiting for Selection" and
|
|
* "Disconnected SCB" lists down
|
|
* in the sequencer.
|
|
*/
|
|
/*32*/ uint8_t cdb32[32]; /*
|
|
* CDB storage for cdbs of size
|
|
* 13->32. We store them here
|
|
* because hardware scbs are
|
|
* allocated from DMA safe
|
|
* memory so we are guaranteed
|
|
* the controller can access
|
|
* this data.
|
|
*/
|
|
};
|
|
|
|
/************************ Kernel SCB Definitions ******************************/
|
|
/*
|
|
* Some fields of the SCB are OS dependent. Here we collect the
|
|
* definitions for elements that all OS platforms need to include
|
|
* in there SCB definition.
|
|
*/
|
|
|
|
/*
|
|
* Definition of a scatter/gather element as transfered to the controller.
|
|
* The aic7xxx chips only support a 24bit length. We use the top byte of
|
|
* the length to store additional address bits and a flag to indicate
|
|
* that a given segment terminates the transfer. This gives us an
|
|
* addressable range of 512GB on machines with 64bit PCI or with chips
|
|
* that can support dual address cycles on 32bit PCI busses.
|
|
*/
|
|
struct ahc_dma_seg {
|
|
uint32_t addr;
|
|
uint32_t len;
|
|
#define AHC_DMA_LAST_SEG 0x80000000
|
|
#define AHC_SG_HIGH_ADDR_MASK 0x7F000000
|
|
#define AHC_SG_LEN_MASK 0x00FFFFFF
|
|
};
|
|
|
|
struct sg_map_node {
|
|
bus_dmamap_t sg_dmamap;
|
|
dma_addr_t sg_physaddr;
|
|
struct ahc_dma_seg* sg_vaddr;
|
|
SLIST_ENTRY(sg_map_node) links;
|
|
};
|
|
|
|
/*
|
|
* The current state of this SCB.
|
|
*/
|
|
typedef enum {
|
|
SCB_FREE = 0x0000,
|
|
SCB_OTHERTCL_TIMEOUT = 0x0002,/*
|
|
* Another device was active
|
|
* during the first timeout for
|
|
* this SCB so we gave ourselves
|
|
* an additional timeout period
|
|
* in case it was hogging the
|
|
* bus.
|
|
*/
|
|
SCB_DEVICE_RESET = 0x0004,
|
|
SCB_SENSE = 0x0008,
|
|
SCB_CDB32_PTR = 0x0010,
|
|
SCB_RECOVERY_SCB = 0x0020,
|
|
SCB_AUTO_NEGOTIATE = 0x0040,/* Negotiate to achieve goal. */
|
|
SCB_NEGOTIATE = 0x0080,/* Negotiation forced for command. */
|
|
SCB_ABORT = 0x0100,
|
|
SCB_UNTAGGEDQ = 0x0200,
|
|
SCB_ACTIVE = 0x0400,
|
|
SCB_TARGET_IMMEDIATE = 0x0800,
|
|
SCB_TRANSMISSION_ERROR = 0x1000,/*
|
|
* We detected a parity or CRC
|
|
* error that has effected the
|
|
* payload of the command. This
|
|
* flag is checked when normal
|
|
* status is returned to catch
|
|
* the case of a target not
|
|
* responding to our attempt
|
|
* to report the error.
|
|
*/
|
|
SCB_TARGET_SCB = 0x2000,
|
|
SCB_SILENT = 0x4000 /*
|
|
* Be quiet about transmission type
|
|
* errors. They are expected and we
|
|
* don't want to upset the user. This
|
|
* flag is typically used during DV.
|
|
*/
|
|
} scb_flag;
|
|
|
|
struct scb {
|
|
struct hardware_scb *hscb;
|
|
union {
|
|
SLIST_ENTRY(scb) sle;
|
|
TAILQ_ENTRY(scb) tqe;
|
|
} links;
|
|
LIST_ENTRY(scb) pending_links;
|
|
ahc_io_ctx_t io_ctx;
|
|
struct ahc_softc *ahc_softc;
|
|
scb_flag flags;
|
|
#ifndef __linux__
|
|
bus_dmamap_t dmamap;
|
|
#endif
|
|
struct scb_platform_data *platform_data;
|
|
struct sg_map_node *sg_map;
|
|
struct ahc_dma_seg *sg_list;
|
|
dma_addr_t sg_list_phys;
|
|
u_int sg_count;/* How full ahc_dma_seg is */
|
|
};
|
|
|
|
struct scb_data {
|
|
SLIST_HEAD(, scb) free_scbs; /*
|
|
* Pool of SCBs ready to be assigned
|
|
* commands to execute.
|
|
*/
|
|
struct scb *scbindex[256]; /*
|
|
* Mapping from tag to SCB.
|
|
* As tag identifiers are an
|
|
* 8bit value, we provide space
|
|
* for all possible tag values.
|
|
* Any lookups to entries at or
|
|
* above AHC_SCB_MAX_ALLOC will
|
|
* always fail.
|
|
*/
|
|
struct hardware_scb *hscbs; /* Array of hardware SCBs */
|
|
struct scb *scbarray; /* Array of kernel SCBs */
|
|
struct scsi_sense_data *sense; /* Per SCB sense data */
|
|
|
|
/*
|
|
* "Bus" addresses of our data structures.
|
|
*/
|
|
bus_dma_tag_t hscb_dmat; /* dmat for our hardware SCB array */
|
|
bus_dmamap_t hscb_dmamap;
|
|
dma_addr_t hscb_busaddr;
|
|
bus_dma_tag_t sense_dmat;
|
|
bus_dmamap_t sense_dmamap;
|
|
dma_addr_t sense_busaddr;
|
|
bus_dma_tag_t sg_dmat; /* dmat for our sg segments */
|
|
SLIST_HEAD(, sg_map_node) sg_maps;
|
|
uint8_t numscbs;
|
|
uint8_t maxhscbs; /* Number of SCBs on the card */
|
|
uint8_t init_level; /*
|
|
* How far we've initialized
|
|
* this structure.
|
|
*/
|
|
};
|
|
|
|
/************************ Target Mode Definitions *****************************/
|
|
|
|
/*
|
|
* Connection desciptor for select-in requests in target mode.
|
|
*/
|
|
struct target_cmd {
|
|
uint8_t scsiid; /* Our ID and the initiator's ID */
|
|
uint8_t identify; /* Identify message */
|
|
uint8_t bytes[22]; /*
|
|
* Bytes contains any additional message
|
|
* bytes terminated by 0xFF. The remainder
|
|
* is the cdb to execute.
|
|
*/
|
|
uint8_t cmd_valid; /*
|
|
* When a command is complete, the firmware
|
|
* will set cmd_valid to all bits set.
|
|
* After the host has seen the command,
|
|
* the bits are cleared. This allows us
|
|
* to just peek at host memory to determine
|
|
* if more work is complete. cmd_valid is on
|
|
* an 8 byte boundary to simplify setting
|
|
* it on aic7880 hardware which only has
|
|
* limited direct access to the DMA FIFO.
|
|
*/
|
|
uint8_t pad[7];
|
|
};
|
|
|
|
/*
|
|
* Number of events we can buffer up if we run out
|
|
* of immediate notify ccbs.
|
|
*/
|
|
#define AHC_TMODE_EVENT_BUFFER_SIZE 8
|
|
struct ahc_tmode_event {
|
|
uint8_t initiator_id;
|
|
uint8_t event_type; /* MSG type or EVENT_TYPE_BUS_RESET */
|
|
#define EVENT_TYPE_BUS_RESET 0xFF
|
|
uint8_t event_arg;
|
|
};
|
|
|
|
/*
|
|
* Per enabled lun target mode state.
|
|
* As this state is directly influenced by the host OS'es target mode
|
|
* environment, we let the OS module define it. Forward declare the
|
|
* structure here so we can store arrays of them, etc. in OS neutral
|
|
* data structures.
|
|
*/
|
|
#ifdef AHC_TARGET_MODE
|
|
struct ahc_tmode_lstate {
|
|
struct cam_path *path;
|
|
struct ccb_hdr_slist accept_tios;
|
|
struct ccb_hdr_slist immed_notifies;
|
|
struct ahc_tmode_event event_buffer[AHC_TMODE_EVENT_BUFFER_SIZE];
|
|
uint8_t event_r_idx;
|
|
uint8_t event_w_idx;
|
|
};
|
|
#else
|
|
struct ahc_tmode_lstate;
|
|
#endif
|
|
|
|
/******************** Transfer Negotiation Datastructures *********************/
|
|
#define AHC_TRANS_CUR 0x01 /* Modify current neogtiation status */
|
|
#define AHC_TRANS_ACTIVE 0x03 /* Assume this target is on the bus */
|
|
#define AHC_TRANS_GOAL 0x04 /* Modify negotiation goal */
|
|
#define AHC_TRANS_USER 0x08 /* Modify user negotiation settings */
|
|
|
|
#define AHC_WIDTH_UNKNOWN 0xFF
|
|
#define AHC_PERIOD_UNKNOWN 0xFF
|
|
#define AHC_OFFSET_UNKNOWN 0xFF
|
|
#define AHC_PPR_OPTS_UNKNOWN 0xFF
|
|
|
|
/*
|
|
* Transfer Negotiation Information.
|
|
*/
|
|
struct ahc_transinfo {
|
|
uint8_t protocol_version; /* SCSI Revision level */
|
|
uint8_t transport_version; /* SPI Revision level */
|
|
uint8_t width; /* Bus width */
|
|
uint8_t period; /* Sync rate factor */
|
|
uint8_t offset; /* Sync offset */
|
|
uint8_t ppr_options; /* Parallel Protocol Request options */
|
|
};
|
|
|
|
/*
|
|
* Per-initiator current, goal and user transfer negotiation information. */
|
|
struct ahc_initiator_tinfo {
|
|
uint8_t scsirate; /* Computed value for SCSIRATE reg */
|
|
struct ahc_transinfo curr;
|
|
struct ahc_transinfo goal;
|
|
struct ahc_transinfo user;
|
|
};
|
|
|
|
/*
|
|
* Per enabled target ID state.
|
|
* Pointers to lun target state as well as sync/wide negotiation information
|
|
* for each initiator<->target mapping. For the initiator role we pretend
|
|
* that we are the target and the targets are the initiators since the
|
|
* negotiation is the same regardless of role.
|
|
*/
|
|
struct ahc_tmode_tstate {
|
|
struct ahc_tmode_lstate* enabled_luns[AHC_NUM_LUNS];
|
|
struct ahc_initiator_tinfo transinfo[AHC_NUM_TARGETS];
|
|
|
|
/*
|
|
* Per initiator state bitmasks.
|
|
*/
|
|
uint16_t auto_negotiate;/* Auto Negotiation Required */
|
|
uint16_t ultraenb; /* Using ultra sync rate */
|
|
uint16_t discenable; /* Disconnection allowed */
|
|
uint16_t tagenable; /* Tagged Queuing allowed */
|
|
};
|
|
|
|
/*
|
|
* Data structure for our table of allowed synchronous transfer rates.
|
|
*/
|
|
struct ahc_syncrate {
|
|
u_int sxfr_u2; /* Value of the SXFR parameter for Ultra2+ Chips */
|
|
u_int sxfr; /* Value of the SXFR parameter for <= Ultra Chips */
|
|
#define ULTRA_SXFR 0x100 /* Rate Requires Ultra Mode set */
|
|
#define ST_SXFR 0x010 /* Rate Single Transition Only */
|
|
#define DT_SXFR 0x040 /* Rate Double Transition Only */
|
|
uint8_t period; /* Period to send to SCSI target */
|
|
char *rate;
|
|
};
|
|
|
|
/* Safe and valid period for async negotiations. */
|
|
#define AHC_ASYNC_XFER_PERIOD 0x45
|
|
#define AHC_ULTRA2_XFER_PERIOD 0x0a
|
|
|
|
/*
|
|
* Indexes into our table of syncronous transfer rates.
|
|
*/
|
|
#define AHC_SYNCRATE_DT 0
|
|
#define AHC_SYNCRATE_ULTRA2 1
|
|
#define AHC_SYNCRATE_ULTRA 3
|
|
#define AHC_SYNCRATE_FAST 6
|
|
#define AHC_SYNCRATE_MAX AHC_SYNCRATE_DT
|
|
#define AHC_SYNCRATE_MIN 13
|
|
|
|
/***************************** Lookup Tables **********************************/
|
|
/*
|
|
* Phase -> name and message out response
|
|
* to parity errors in each phase table.
|
|
*/
|
|
struct ahc_phase_table_entry {
|
|
uint8_t phase;
|
|
uint8_t mesg_out; /* Message response to parity errors */
|
|
char *phasemsg;
|
|
};
|
|
|
|
/************************** Serial EEPROM Format ******************************/
|
|
|
|
struct seeprom_config {
|
|
/*
|
|
* Per SCSI ID Configuration Flags
|
|
*/
|
|
uint16_t device_flags[16]; /* words 0-15 */
|
|
#define CFXFER 0x0007 /* synchronous transfer rate */
|
|
#define CFSYNCH 0x0008 /* enable synchronous transfer */
|
|
#define CFDISC 0x0010 /* enable disconnection */
|
|
#define CFWIDEB 0x0020 /* wide bus device */
|
|
#define CFSYNCHISULTRA 0x0040 /* CFSYNCH is an ultra offset (2940AU)*/
|
|
#define CFSYNCSINGLE 0x0080 /* Single-Transition signalling */
|
|
#define CFSTART 0x0100 /* send start unit SCSI command */
|
|
#define CFINCBIOS 0x0200 /* include in BIOS scan */
|
|
#define CFRNFOUND 0x0400 /* report even if not found */
|
|
#define CFMULTILUNDEV 0x0800 /* Probe multiple luns in BIOS scan */
|
|
#define CFWBCACHEENB 0x4000 /* Enable W-Behind Cache on disks */
|
|
#define CFWBCACHENOP 0xc000 /* Don't touch W-Behind Cache */
|
|
|
|
/*
|
|
* BIOS Control Bits
|
|
*/
|
|
uint16_t bios_control; /* word 16 */
|
|
#define CFSUPREM 0x0001 /* support all removeable drives */
|
|
#define CFSUPREMB 0x0002 /* support removeable boot drives */
|
|
#define CFBIOSEN 0x0004 /* BIOS enabled */
|
|
#define CFBIOS_BUSSCAN 0x0008 /* Have the BIOS Scan the Bus */
|
|
#define CFSM2DRV 0x0010 /* support more than two drives */
|
|
#define CFSTPWLEVEL 0x0010 /* Termination level control */
|
|
#define CF284XEXTEND 0x0020 /* extended translation (284x cards) */
|
|
#define CFCTRL_A 0x0020 /* BIOS displays Ctrl-A message */
|
|
#define CFTERM_MENU 0x0040 /* BIOS displays termination menu */
|
|
#define CFEXTEND 0x0080 /* extended translation enabled */
|
|
#define CFSCAMEN 0x0100 /* SCAM enable */
|
|
#define CFMSG_LEVEL 0x0600 /* BIOS Message Level */
|
|
#define CFMSG_VERBOSE 0x0000
|
|
#define CFMSG_SILENT 0x0200
|
|
#define CFMSG_DIAG 0x0400
|
|
#define CFBOOTCD 0x0800 /* Support Bootable CD-ROM */
|
|
/* UNUSED 0xff00 */
|
|
|
|
/*
|
|
* Host Adapter Control Bits
|
|
*/
|
|
uint16_t adapter_control; /* word 17 */
|
|
#define CFAUTOTERM 0x0001 /* Perform Auto termination */
|
|
#define CFULTRAEN 0x0002 /* Ultra SCSI speed enable */
|
|
#define CF284XSELTO 0x0003 /* Selection timeout (284x cards) */
|
|
#define CF284XFIFO 0x000C /* FIFO Threshold (284x cards) */
|
|
#define CFSTERM 0x0004 /* SCSI low byte termination */
|
|
#define CFWSTERM 0x0008 /* SCSI high byte termination */
|
|
#define CFSPARITY 0x0010 /* SCSI parity */
|
|
#define CF284XSTERM 0x0020 /* SCSI low byte term (284x cards) */
|
|
#define CFMULTILUN 0x0020
|
|
#define CFRESETB 0x0040 /* reset SCSI bus at boot */
|
|
#define CFCLUSTERENB 0x0080 /* Cluster Enable */
|
|
#define CFBOOTCHAN 0x0300 /* probe this channel first */
|
|
#define CFBOOTCHANSHIFT 8
|
|
#define CFSEAUTOTERM 0x0400 /* Ultra2 Perform secondary Auto Term*/
|
|
#define CFSELOWTERM 0x0800 /* Ultra2 secondary low term */
|
|
#define CFSEHIGHTERM 0x1000 /* Ultra2 secondary high term */
|
|
#define CFENABLEDV 0x4000 /* Perform Domain Validation*/
|
|
|
|
/*
|
|
* Bus Release Time, Host Adapter ID
|
|
*/
|
|
uint16_t brtime_id; /* word 18 */
|
|
#define CFSCSIID 0x000f /* host adapter SCSI ID */
|
|
/* UNUSED 0x00f0 */
|
|
#define CFBRTIME 0xff00 /* bus release time */
|
|
|
|
/*
|
|
* Maximum targets
|
|
*/
|
|
uint16_t max_targets; /* word 19 */
|
|
#define CFMAXTARG 0x00ff /* maximum targets */
|
|
#define CFBOOTLUN 0x0f00 /* Lun to boot from */
|
|
#define CFBOOTID 0xf000 /* Target to boot from */
|
|
uint16_t res_1[10]; /* words 20-29 */
|
|
uint16_t signature; /* Signature == 0x250 */
|
|
#define CFSIGNATURE 0x250
|
|
#define CFSIGNATURE2 0x300
|
|
uint16_t checksum; /* word 31 */
|
|
};
|
|
|
|
/**************************** Message Buffer *********************************/
|
|
typedef enum {
|
|
MSG_TYPE_NONE = 0x00,
|
|
MSG_TYPE_INITIATOR_MSGOUT = 0x01,
|
|
MSG_TYPE_INITIATOR_MSGIN = 0x02,
|
|
MSG_TYPE_TARGET_MSGOUT = 0x03,
|
|
MSG_TYPE_TARGET_MSGIN = 0x04
|
|
} ahc_msg_type;
|
|
|
|
typedef enum {
|
|
MSGLOOP_IN_PROG,
|
|
MSGLOOP_MSGCOMPLETE,
|
|
MSGLOOP_TERMINATED
|
|
} msg_loop_stat;
|
|
|
|
/*********************** Software Configuration Structure *********************/
|
|
TAILQ_HEAD(scb_tailq, scb);
|
|
|
|
struct ahc_aic7770_softc {
|
|
/*
|
|
* Saved register state used for chip_init().
|
|
*/
|
|
uint8_t busspd;
|
|
uint8_t bustime;
|
|
};
|
|
|
|
struct ahc_pci_softc {
|
|
/*
|
|
* Saved register state used for chip_init().
|
|
*/
|
|
uint32_t devconfig;
|
|
uint16_t targcrccnt;
|
|
uint8_t command;
|
|
uint8_t csize_lattime;
|
|
uint8_t optionmode;
|
|
uint8_t crccontrol1;
|
|
uint8_t dscommand0;
|
|
uint8_t dspcistatus;
|
|
uint8_t scbbaddr;
|
|
uint8_t dff_thrsh;
|
|
};
|
|
|
|
union ahc_bus_softc {
|
|
struct ahc_aic7770_softc aic7770_softc;
|
|
struct ahc_pci_softc pci_softc;
|
|
};
|
|
|
|
typedef void (*ahc_bus_intr_t)(struct ahc_softc *);
|
|
typedef int (*ahc_bus_chip_init_t)(struct ahc_softc *);
|
|
typedef int (*ahc_bus_suspend_t)(struct ahc_softc *);
|
|
typedef int (*ahc_bus_resume_t)(struct ahc_softc *);
|
|
typedef void ahc_callback_t (void *);
|
|
|
|
struct ahc_softc {
|
|
bus_space_tag_t tag;
|
|
bus_space_handle_t bsh;
|
|
#ifndef __linux__
|
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bus_dma_tag_t buffer_dmat; /* dmat for buffer I/O */
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#endif
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struct scb_data *scb_data;
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struct scb *next_queued_scb;
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/*
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* SCBs that have been sent to the controller
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*/
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LIST_HEAD(, scb) pending_scbs;
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/*
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* Counting lock for deferring the release of additional
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* untagged transactions from the untagged_queues. When
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* the lock is decremented to 0, all queues in the
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* untagged_queues array are run.
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*/
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u_int untagged_queue_lock;
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/*
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* Per-target queue of untagged-transactions. The
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* transaction at the head of the queue is the
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* currently pending untagged transaction for the
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* target. The driver only allows a single untagged
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* transaction per target.
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*/
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struct scb_tailq untagged_queues[AHC_NUM_TARGETS];
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/*
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* Bus attachment specific data.
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*/
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union ahc_bus_softc bus_softc;
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/*
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* Platform specific data.
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*/
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struct ahc_platform_data *platform_data;
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/*
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* Platform specific device information.
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*/
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ahc_dev_softc_t dev_softc;
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/*
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* Bus specific device information.
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*/
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ahc_bus_intr_t bus_intr;
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/*
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* Bus specific initialization required
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* after a chip reset.
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*/
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ahc_bus_chip_init_t bus_chip_init;
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/*
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* Bus specific suspend routine.
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*/
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ahc_bus_suspend_t bus_suspend;
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/*
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* Bus specific resume routine.
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*/
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ahc_bus_resume_t bus_resume;
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/*
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* Target mode related state kept on a per enabled lun basis.
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* Targets that are not enabled will have null entries.
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* As an initiator, we keep one target entry for our initiator
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* ID to store our sync/wide transfer settings.
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*/
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struct ahc_tmode_tstate *enabled_targets[AHC_NUM_TARGETS];
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/*
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* The black hole device responsible for handling requests for
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* disabled luns on enabled targets.
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*/
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struct ahc_tmode_lstate *black_hole;
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/*
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* Device instance currently on the bus awaiting a continue TIO
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* for a command that was not given the disconnect priveledge.
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*/
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struct ahc_tmode_lstate *pending_device;
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/*
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* Card characteristics
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*/
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ahc_chip chip;
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ahc_feature features;
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ahc_bug bugs;
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ahc_flag flags;
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struct seeprom_config *seep_config;
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/* Values to store in the SEQCTL register for pause and unpause */
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uint8_t unpause;
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uint8_t pause;
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/* Command Queues */
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uint8_t qoutfifonext;
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uint8_t qinfifonext;
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uint8_t *qoutfifo;
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uint8_t *qinfifo;
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/* Critical Section Data */
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struct cs *critical_sections;
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u_int num_critical_sections;
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/* Channel Names ('A', 'B', etc.) */
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char channel;
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char channel_b;
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/* Initiator Bus ID */
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uint8_t our_id;
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uint8_t our_id_b;
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/*
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* PCI error detection.
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*/
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int unsolicited_ints;
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/*
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* Target incoming command FIFO.
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*/
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struct target_cmd *targetcmds;
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uint8_t tqinfifonext;
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/*
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* Cached copy of the sequencer control register.
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*/
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uint8_t seqctl;
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/*
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* Incoming and outgoing message handling.
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*/
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uint8_t send_msg_perror;
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ahc_msg_type msg_type;
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uint8_t msgout_buf[12];/* Message we are sending */
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uint8_t msgin_buf[12];/* Message we are receiving */
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u_int msgout_len; /* Length of message to send */
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u_int msgout_index; /* Current index in msgout */
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u_int msgin_index; /* Current index in msgin */
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/*
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* Mapping information for data structures shared
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* between the sequencer and kernel.
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*/
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bus_dma_tag_t parent_dmat;
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bus_dma_tag_t shared_data_dmat;
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bus_dmamap_t shared_data_dmamap;
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dma_addr_t shared_data_busaddr;
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/*
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* Bus address of the one byte buffer used to
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* work-around a DMA bug for chips <= aic7880
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* in target mode.
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*/
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dma_addr_t dma_bug_buf;
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/* Number of enabled target mode device on this card */
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u_int enabled_luns;
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/* Initialization level of this data structure */
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u_int init_level;
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/* PCI cacheline size. */
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u_int pci_cachesize;
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/*
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* Count of parity errors we have seen as a target.
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* We auto-disable parity error checking after seeing
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* AHC_PCI_TARGET_PERR_THRESH number of errors.
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*/
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u_int pci_target_perr_count;
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#define AHC_PCI_TARGET_PERR_THRESH 10
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/* Maximum number of sequencer instructions supported. */
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u_int instruction_ram_size;
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/* Per-Unit descriptive information */
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const char *description;
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char *name;
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int unit;
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/* Selection Timer settings */
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int seltime;
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int seltime_b;
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uint16_t user_discenable;/* Disconnection allowed */
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uint16_t user_tagenable;/* Tagged Queuing allowed */
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};
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/************************ Active Device Information ***************************/
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typedef enum {
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ROLE_UNKNOWN,
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ROLE_INITIATOR,
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ROLE_TARGET
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} role_t;
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struct ahc_devinfo {
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int our_scsiid;
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int target_offset;
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uint16_t target_mask;
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u_int target;
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u_int lun;
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char channel;
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role_t role; /*
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* Only guaranteed to be correct if not
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* in the busfree state.
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*/
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};
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/****************************** PCI Structures ********************************/
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typedef int (ahc_device_setup_t)(struct ahc_softc *);
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struct ahc_pci_identity {
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uint64_t full_id;
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uint64_t id_mask;
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char *name;
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ahc_device_setup_t *setup;
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};
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/***************************** VL/EISA Declarations ***************************/
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struct aic7770_identity {
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uint32_t full_id;
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uint32_t id_mask;
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const char *name;
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ahc_device_setup_t *setup;
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};
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extern struct aic7770_identity aic7770_ident_table[];
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extern const int ahc_num_aic7770_devs;
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#define AHC_EISA_SLOT_OFFSET 0xc00
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#define AHC_EISA_IOSIZE 0x100
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/*************************** Function Declarations ****************************/
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/******************************************************************************/
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u_int ahc_index_busy_tcl(struct ahc_softc *ahc, u_int tcl);
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void ahc_unbusy_tcl(struct ahc_softc *ahc, u_int tcl);
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void ahc_busy_tcl(struct ahc_softc *ahc,
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u_int tcl, u_int busyid);
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/***************************** PCI Front End *********************************/
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struct ahc_pci_identity *ahc_find_pci_device(ahc_dev_softc_t);
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int ahc_pci_config(struct ahc_softc *,
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struct ahc_pci_identity *);
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int ahc_pci_test_register_access(struct ahc_softc *);
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/*************************** EISA/VL Front End ********************************/
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struct aic7770_identity *aic7770_find_device(uint32_t);
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int aic7770_config(struct ahc_softc *ahc,
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struct aic7770_identity *,
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u_int port);
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/************************** SCB and SCB queue management **********************/
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int ahc_probe_scbs(struct ahc_softc *);
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void ahc_run_untagged_queues(struct ahc_softc *ahc);
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void ahc_run_untagged_queue(struct ahc_softc *ahc,
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struct scb_tailq *queue);
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void ahc_qinfifo_requeue_tail(struct ahc_softc *ahc,
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struct scb *scb);
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int ahc_match_scb(struct ahc_softc *ahc, struct scb *scb,
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int target, char channel, int lun,
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u_int tag, role_t role);
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/****************************** Initialization ********************************/
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struct ahc_softc *ahc_alloc(void *platform_arg, char *name);
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int ahc_softc_init(struct ahc_softc *);
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void ahc_controller_info(struct ahc_softc *ahc, char *buf);
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int ahc_chip_init(struct ahc_softc *ahc);
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int ahc_init(struct ahc_softc *ahc);
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void ahc_intr_enable(struct ahc_softc *ahc, int enable);
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void ahc_pause_and_flushwork(struct ahc_softc *ahc);
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int ahc_suspend(struct ahc_softc *ahc);
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int ahc_resume(struct ahc_softc *ahc);
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void ahc_set_unit(struct ahc_softc *, int);
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void ahc_set_name(struct ahc_softc *, char *);
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void ahc_alloc_scbs(struct ahc_softc *ahc);
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void ahc_free(struct ahc_softc *ahc);
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int ahc_reset(struct ahc_softc *ahc, int reinit);
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void ahc_shutdown(void *arg);
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/*************************** Interrupt Services *******************************/
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void ahc_clear_intstat(struct ahc_softc *ahc);
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void ahc_run_qoutfifo(struct ahc_softc *ahc);
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#ifdef AHC_TARGET_MODE
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void ahc_run_tqinfifo(struct ahc_softc *ahc, int paused);
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#endif
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void ahc_handle_brkadrint(struct ahc_softc *ahc);
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void ahc_handle_seqint(struct ahc_softc *ahc, u_int intstat);
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void ahc_handle_scsiint(struct ahc_softc *ahc,
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u_int intstat);
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void ahc_clear_critical_section(struct ahc_softc *ahc);
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/***************************** Error Recovery *********************************/
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typedef enum {
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SEARCH_COMPLETE,
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SEARCH_COUNT,
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SEARCH_REMOVE
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} ahc_search_action;
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int ahc_search_qinfifo(struct ahc_softc *ahc, int target,
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char channel, int lun, u_int tag,
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role_t role, uint32_t status,
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ahc_search_action action);
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int ahc_search_untagged_queues(struct ahc_softc *ahc,
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ahc_io_ctx_t ctx,
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int target, char channel,
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int lun, uint32_t status,
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ahc_search_action action);
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int ahc_search_disc_list(struct ahc_softc *ahc, int target,
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char channel, int lun, u_int tag,
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int stop_on_first, int remove,
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int save_state);
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void ahc_freeze_devq(struct ahc_softc *ahc, struct scb *scb);
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int ahc_reset_channel(struct ahc_softc *ahc, char channel,
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int initiate_reset);
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int ahc_abort_scbs(struct ahc_softc *ahc, int target,
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char channel, int lun, u_int tag,
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role_t role, uint32_t status);
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void ahc_restart(struct ahc_softc *ahc);
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void ahc_calc_residual(struct ahc_softc *ahc,
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struct scb *scb);
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/*************************** Utility Functions ********************************/
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struct ahc_phase_table_entry*
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ahc_lookup_phase_entry(int phase);
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void ahc_compile_devinfo(struct ahc_devinfo *devinfo,
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u_int our_id, u_int target,
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u_int lun, char channel,
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role_t role);
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/************************** Transfer Negotiation ******************************/
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struct ahc_syncrate* ahc_find_syncrate(struct ahc_softc *ahc, u_int *period,
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u_int *ppr_options, u_int maxsync);
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u_int ahc_find_period(struct ahc_softc *ahc,
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u_int scsirate, u_int maxsync);
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void ahc_validate_offset(struct ahc_softc *ahc,
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struct ahc_initiator_tinfo *tinfo,
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struct ahc_syncrate *syncrate,
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u_int *offset, int wide,
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role_t role);
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void ahc_validate_width(struct ahc_softc *ahc,
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struct ahc_initiator_tinfo *tinfo,
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u_int *bus_width,
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role_t role);
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/*
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* Negotiation types. These are used to qualify if we should renegotiate
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* even if our goal and current transport parameters are identical.
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*/
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typedef enum {
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AHC_NEG_TO_GOAL, /* Renegotiate only if goal and curr differ. */
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AHC_NEG_IF_NON_ASYNC, /* Renegotiate so long as goal is non-async. */
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AHC_NEG_ALWAYS /* Renegotiat even if goal is async. */
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} ahc_neg_type;
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int ahc_update_neg_request(struct ahc_softc*,
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struct ahc_devinfo*,
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struct ahc_tmode_tstate*,
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struct ahc_initiator_tinfo*,
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ahc_neg_type);
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void ahc_set_width(struct ahc_softc *ahc,
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struct ahc_devinfo *devinfo,
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u_int width, u_int type, int paused);
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void ahc_set_syncrate(struct ahc_softc *ahc,
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struct ahc_devinfo *devinfo,
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struct ahc_syncrate *syncrate,
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u_int period, u_int offset,
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u_int ppr_options,
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u_int type, int paused);
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typedef enum {
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AHC_QUEUE_NONE,
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AHC_QUEUE_BASIC,
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AHC_QUEUE_TAGGED
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} ahc_queue_alg;
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void ahc_set_tags(struct ahc_softc *ahc,
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struct scsi_cmnd *cmd,
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struct ahc_devinfo *devinfo,
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ahc_queue_alg alg);
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/**************************** Target Mode *************************************/
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#ifdef AHC_TARGET_MODE
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void ahc_send_lstate_events(struct ahc_softc *,
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struct ahc_tmode_lstate *);
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void ahc_handle_en_lun(struct ahc_softc *ahc,
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struct cam_sim *sim, union ccb *ccb);
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cam_status ahc_find_tmode_devs(struct ahc_softc *ahc,
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struct cam_sim *sim, union ccb *ccb,
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struct ahc_tmode_tstate **tstate,
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struct ahc_tmode_lstate **lstate,
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int notfound_failure);
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#ifndef AHC_TMODE_ENABLE
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#define AHC_TMODE_ENABLE 0
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#endif
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#endif
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/******************************* Debug ***************************************/
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#ifdef AHC_DEBUG
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extern uint32_t ahc_debug;
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#define AHC_SHOW_MISC 0x0001
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#define AHC_SHOW_SENSE 0x0002
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#define AHC_DUMP_SEEPROM 0x0004
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#define AHC_SHOW_TERMCTL 0x0008
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#define AHC_SHOW_MEMORY 0x0010
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#define AHC_SHOW_MESSAGES 0x0020
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#define AHC_SHOW_DV 0x0040
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#define AHC_SHOW_SELTO 0x0080
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#define AHC_SHOW_QFULL 0x0200
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#define AHC_SHOW_QUEUE 0x0400
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#define AHC_SHOW_TQIN 0x0800
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#define AHC_SHOW_MASKED_ERRORS 0x1000
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#define AHC_DEBUG_SEQUENCER 0x2000
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#endif
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void ahc_print_scb(struct scb *scb);
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void ahc_print_devinfo(struct ahc_softc *ahc,
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struct ahc_devinfo *dev);
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void ahc_dump_card_state(struct ahc_softc *ahc);
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int ahc_print_register(ahc_reg_parse_entry_t *table,
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u_int num_entries,
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const char *name,
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u_int address,
|
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u_int value,
|
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u_int *cur_column,
|
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u_int wrap_point);
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/******************************* SEEPROM *************************************/
|
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int ahc_acquire_seeprom(struct ahc_softc *ahc,
|
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struct seeprom_descriptor *sd);
|
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void ahc_release_seeprom(struct seeprom_descriptor *sd);
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#endif /* _AIC7XXX_H_ */
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