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linux/drivers/scsi/qla2xxx/qla_isr.c

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/*
* QLOGIC LINUX SOFTWARE
*
* QLogic ISP2x00 device driver for Linux 2.6.x
* Copyright (C) 2003-2004 QLogic Corporation
* (www.qlogic.com)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
*/
#include "qla_def.h"
static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
static void qla2x00_async_event(scsi_qla_host_t *, uint32_t);
static void qla2x00_process_completed_request(struct scsi_qla_host *, uint32_t);
void qla2x00_process_response_queue(struct scsi_qla_host *);
static void qla2x00_status_entry(scsi_qla_host_t *, sts_entry_t *);
static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *);
static void qla2x00_error_entry(scsi_qla_host_t *, sts_entry_t *);
static void qla2x00_ms_entry(scsi_qla_host_t *, ms_iocb_entry_t *);
/**
* qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
* @irq:
* @dev_id: SCSI driver HA context
* @regs:
*
* Called by system whenever the host adapter generates an interrupt.
*
* Returns handled flag.
*/
irqreturn_t
qla2100_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
{
scsi_qla_host_t *ha;
device_reg_t __iomem *reg;
int status;
unsigned long flags;
unsigned long iter;
uint32_t mbx;
ha = (scsi_qla_host_t *) dev_id;
if (!ha) {
printk(KERN_INFO
"%s(): NULL host pointer\n", __func__);
return (IRQ_NONE);
}
reg = ha->iobase;
status = 0;
spin_lock_irqsave(&ha->hardware_lock, flags);
for (iter = 50; iter--; ) {
if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
break;
if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
RD_REG_WORD(&reg->hccr);
/* Get mailbox data. */
mbx = RD_MAILBOX_REG(ha, reg, 0);
if (mbx > 0x3fff && mbx < 0x8000) {
qla2x00_mbx_completion(ha, (uint16_t)mbx);
status |= MBX_INTERRUPT;
} else if (mbx > 0x7fff && mbx < 0xc000) {
qla2x00_async_event(ha, mbx);
} else {
/*EMPTY*/
DEBUG2(printk("scsi(%ld): Unrecognized "
"interrupt type (%d)\n",
ha->host_no, mbx));
}
/* Release mailbox registers. */
WRT_REG_WORD(&reg->semaphore, 0);
RD_REG_WORD(&reg->semaphore);
} else {
qla2x00_process_response_queue(ha);
WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
RD_REG_WORD(&reg->hccr);
}
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
(status & MBX_INTERRUPT) && ha->flags.mbox_int) {
spin_lock_irqsave(&ha->mbx_reg_lock, flags);
set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
up(&ha->mbx_intr_sem);
spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
}
return (IRQ_HANDLED);
}
/**
* qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
* @irq:
* @dev_id: SCSI driver HA context
* @regs:
*
* Called by system whenever the host adapter generates an interrupt.
*
* Returns handled flag.
*/
irqreturn_t
qla2300_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
{
scsi_qla_host_t *ha;
device_reg_t __iomem *reg;
int status;
unsigned long flags;
unsigned long iter;
uint32_t stat;
uint32_t mbx;
uint16_t hccr;
ha = (scsi_qla_host_t *) dev_id;
if (!ha) {
printk(KERN_INFO
"%s(): NULL host pointer\n", __func__);
return (IRQ_NONE);
}
reg = ha->iobase;
status = 0;
spin_lock_irqsave(&ha->hardware_lock, flags);
for (iter = 50; iter--; ) {
stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
if (stat & HSR_RISC_PAUSED) {
hccr = RD_REG_WORD(&reg->hccr);
if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
qla_printk(KERN_INFO, ha,
"Parity error -- HCCR=%x.\n", hccr);
else
qla_printk(KERN_INFO, ha,
"RISC paused -- HCCR=%x\n", hccr);
/*
* Issue a "HARD" reset in order for the RISC
* interrupt bit to be cleared. Schedule a big
* hammmer to get out of the RISC PAUSED state.
*/
WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
RD_REG_WORD(&reg->hccr);
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
break;
} else if ((stat & HSR_RISC_INT) == 0)
break;
mbx = MSW(stat);
switch (stat & 0xff) {
case 0x13:
qla2x00_process_response_queue(ha);
break;
case 0x1:
case 0x2:
case 0x10:
case 0x11:
qla2x00_mbx_completion(ha, (uint16_t)mbx);
status |= MBX_INTERRUPT;
/* Release mailbox registers. */
WRT_REG_WORD(&reg->semaphore, 0);
break;
case 0x12:
qla2x00_async_event(ha, mbx);
break;
case 0x15:
mbx = mbx << 16 | MBA_CMPLT_1_16BIT;
qla2x00_async_event(ha, mbx);
break;
case 0x16:
mbx = mbx << 16 | MBA_SCSI_COMPLETION;
qla2x00_async_event(ha, mbx);
break;
default:
DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
"(%d)\n",
ha->host_no, stat & 0xff));
break;
}
WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
RD_REG_WORD_RELAXED(&reg->hccr);
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
(status & MBX_INTERRUPT) && ha->flags.mbox_int) {
spin_lock_irqsave(&ha->mbx_reg_lock, flags);
set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
up(&ha->mbx_intr_sem);
spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
}
return (IRQ_HANDLED);
}
/**
* qla2x00_mbx_completion() - Process mailbox command completions.
* @ha: SCSI driver HA context
* @mb0: Mailbox0 register
*/
static void
qla2x00_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
{
uint16_t cnt;
uint16_t __iomem *wptr;
device_reg_t __iomem *reg = ha->iobase;
/* Load return mailbox registers. */
ha->flags.mbox_int = 1;
ha->mailbox_out[0] = mb0;
wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
for (cnt = 1; cnt < ha->mbx_count; cnt++) {
if (IS_QLA2200(ha) && cnt == 8)
wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
if (cnt == 4 || cnt == 5)
ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
else
ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
wptr++;
}
if (ha->mcp) {
DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
__func__, ha->host_no, ha->mcp->mb[0]));
} else {
DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
__func__, ha->host_no));
}
}
/**
* qla2x00_async_event() - Process aynchronous events.
* @ha: SCSI driver HA context
* @mb0: Mailbox0 register
*/
static void
qla2x00_async_event(scsi_qla_host_t *ha, uint32_t mbx)
{
static char *link_speeds[5] = { "1", "2", "4", "?", "10" };
char *link_speed;
uint16_t mb[4];
uint16_t handle_cnt;
uint16_t cnt;
uint32_t handles[5];
device_reg_t __iomem *reg = ha->iobase;
uint32_t rscn_entry, host_pid;
uint8_t rscn_queue_index;
/* Setup to process RIO completion. */
handle_cnt = 0;
mb[0] = LSW(mbx);
switch (mb[0]) {
case MBA_SCSI_COMPLETION:
if (IS_QLA2100(ha) || IS_QLA2200(ha))
handles[0] = le32_to_cpu(
((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) |
RD_MAILBOX_REG(ha, reg, 1));
else
handles[0] = le32_to_cpu(
((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) |
MSW(mbx));
handle_cnt = 1;
break;
case MBA_CMPLT_1_16BIT:
if (IS_QLA2100(ha) || IS_QLA2200(ha))
handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
else
handles[0] = MSW(mbx);
handle_cnt = 1;
mb[0] = MBA_SCSI_COMPLETION;
break;
case MBA_CMPLT_2_16BIT:
handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
handle_cnt = 2;
mb[0] = MBA_SCSI_COMPLETION;
break;
case MBA_CMPLT_3_16BIT:
handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3);
handle_cnt = 3;
mb[0] = MBA_SCSI_COMPLETION;
break;
case MBA_CMPLT_4_16BIT:
handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3);
handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
handle_cnt = 4;
mb[0] = MBA_SCSI_COMPLETION;
break;
case MBA_CMPLT_5_16BIT:
handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3);
handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
handle_cnt = 5;
mb[0] = MBA_SCSI_COMPLETION;
break;
case MBA_CMPLT_2_32BIT:
handles[0] = le32_to_cpu(
((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) |
RD_MAILBOX_REG(ha, reg, 1));
handles[1] = le32_to_cpu(
((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
RD_MAILBOX_REG(ha, reg, 6));
handle_cnt = 2;
mb[0] = MBA_SCSI_COMPLETION;
break;
default:
break;
}
switch (mb[0]) {
case MBA_SCSI_COMPLETION: /* Fast Post */
if (!ha->flags.online)
break;
for (cnt = 0; cnt < handle_cnt; cnt++)
qla2x00_process_completed_request(ha, handles[cnt]);
break;
case MBA_RESET: /* Reset */
DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n", ha->host_no));
set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
break;
case MBA_SYSTEM_ERR: /* System Error */
mb[1] = RD_MAILBOX_REG(ha, reg, 1);
mb[2] = RD_MAILBOX_REG(ha, reg, 2);
mb[3] = RD_MAILBOX_REG(ha, reg, 3);
qla_printk(KERN_INFO, ha,
"ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
mb[1], mb[2], mb[3]);
if (IS_QLA2100(ha) || IS_QLA2200(ha))
qla2100_fw_dump(ha, 1);
else
qla2300_fw_dump(ha, 1);
if (mb[1] == 0) {
qla_printk(KERN_INFO, ha,
"Unrecoverable Hardware Error: adapter marked "
"OFFLINE!\n");
ha->flags.online = 0;
} else
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
break;
case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n",
ha->host_no));
qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n");
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
break;
case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
ha->host_no));
qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
break;
case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
ha->host_no));
break;
case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
mb[1] = RD_MAILBOX_REG(ha, reg, 1);
DEBUG2(printk("scsi(%ld): LIP occured (%x).\n", ha->host_no,
mb[1]));
qla_printk(KERN_INFO, ha, "LIP occured (%x).\n", mb[1]);
if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
atomic_set(&ha->loop_state, LOOP_DOWN);
atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
qla2x00_mark_all_devices_lost(ha);
}
set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
ha->flags.management_server_logged_in = 0;
/* Update AEN queue. */
qla2x00_enqueue_aen(ha, MBA_LIP_OCCURRED, NULL);
break;
case MBA_LOOP_UP: /* Loop Up Event */
mb[1] = RD_MAILBOX_REG(ha, reg, 1);
ha->link_data_rate = 0;
if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
link_speed = link_speeds[0];
} else {
link_speed = link_speeds[3];
if (mb[1] < 5)
link_speed = link_speeds[mb[1]];
ha->link_data_rate = mb[1];
}
DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
ha->host_no, link_speed));
qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
link_speed);
ha->flags.management_server_logged_in = 0;
/* Update AEN queue. */
qla2x00_enqueue_aen(ha, MBA_LOOP_UP, NULL);
break;
case MBA_LOOP_DOWN: /* Loop Down Event */
DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN.\n",
ha->host_no));
qla_printk(KERN_INFO, ha, "LOOP DOWN detected.\n");
if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
atomic_set(&ha->loop_state, LOOP_DOWN);
atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
ha->device_flags |= DFLG_NO_CABLE;
qla2x00_mark_all_devices_lost(ha);
}
ha->flags.management_server_logged_in = 0;
ha->link_data_rate = 0;
/* Update AEN queue. */
qla2x00_enqueue_aen(ha, MBA_LOOP_DOWN, NULL);
break;
case MBA_LIP_RESET: /* LIP reset occurred */
mb[1] = RD_MAILBOX_REG(ha, reg, 1);
DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
ha->host_no, mb[1]));
qla_printk(KERN_INFO, ha,
"LIP reset occured (%x).\n", mb[1]);
if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
atomic_set(&ha->loop_state, LOOP_DOWN);
atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
qla2x00_mark_all_devices_lost(ha);
}
set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
ha->operating_mode = LOOP;
ha->flags.management_server_logged_in = 0;
/* Update AEN queue. */
qla2x00_enqueue_aen(ha, MBA_LIP_RESET, NULL);
break;
case MBA_POINT_TO_POINT: /* Point-to-Point */
if (IS_QLA2100(ha))
break;
DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n",
ha->host_no));
/*
* Until there's a transition from loop down to loop up, treat
* this as loop down only.
*/
if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
atomic_set(&ha->loop_state, LOOP_DOWN);
if (!atomic_read(&ha->loop_down_timer))
atomic_set(&ha->loop_down_timer,
LOOP_DOWN_TIME);
qla2x00_mark_all_devices_lost(ha);
}
if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
}
set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
break;
case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
if (IS_QLA2100(ha))
break;
mb[1] = RD_MAILBOX_REG(ha, reg, 1);
DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
"received.\n",
ha->host_no));
qla_printk(KERN_INFO, ha,
"Configuration change detected: value=%x.\n", mb[1]);
if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
atomic_set(&ha->loop_state, LOOP_DOWN);
if (!atomic_read(&ha->loop_down_timer))
atomic_set(&ha->loop_down_timer,
LOOP_DOWN_TIME);
qla2x00_mark_all_devices_lost(ha);
}
set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
break;
case MBA_PORT_UPDATE: /* Port database update */
mb[1] = RD_MAILBOX_REG(ha, reg, 1);
mb[2] = RD_MAILBOX_REG(ha, reg, 2);
/*
* If a single remote port just logged into (or logged out of)
* us, create a new entry in our rscn fcports list and handle
* the event like an RSCN.
*/
if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA6312(ha) &&
!IS_QLA6322(ha) && ha->flags.init_done && mb[1] != 0xffff &&
((ha->operating_mode == P2P && mb[1] != 0) ||
(ha->operating_mode != P2P && mb[1] !=
SNS_FIRST_LOOP_ID)) && (mb[2] == 6 || mb[2] == 7)) {
int rval;
fc_port_t *rscn_fcport;
/* Create new fcport for login. */
rscn_fcport = qla2x00_alloc_rscn_fcport(ha, GFP_ATOMIC);
if (rscn_fcport) {
DEBUG14(printk("scsi(%ld): Port Update -- "
"creating RSCN fcport %p for %x/%x.\n",
ha->host_no, rscn_fcport, mb[1], mb[2]));
rscn_fcport->loop_id = mb[1];
rscn_fcport->d_id.b24 = INVALID_PORT_ID;
atomic_set(&rscn_fcport->state,
FCS_DEVICE_LOST);
list_add_tail(&rscn_fcport->list,
&ha->rscn_fcports);
rval = qla2x00_handle_port_rscn(ha, 0,
rscn_fcport, 1);
if (rval == QLA_SUCCESS)
break;
} else {
DEBUG14(printk("scsi(%ld): Port Update -- "
"-- unable to allocate RSCN fcport "
"login.\n", ha->host_no));
}
}
/*
* If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
* event etc. earlier indicating loop is down) then process
* it. Otherwise ignore it and Wait for RSCN to come in.
*/
atomic_set(&ha->loop_down_timer, 0);
if (atomic_read(&ha->loop_state) != LOOP_DOWN &&
atomic_read(&ha->loop_state) != LOOP_DEAD) {
DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
"ignored.\n", ha->host_no));
break;
}
DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
ha->host_no));
DEBUG(printk(KERN_INFO
"scsi(%ld): Port database changed %04x %04x.\n",
ha->host_no, mb[1], mb[2]));
/*
* Mark all devices as missing so we will login again.
*/
atomic_set(&ha->loop_state, LOOP_UP);
qla2x00_mark_all_devices_lost(ha);
ha->flags.rscn_queue_overflow = 1;
set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
/* Update AEN queue. */
qla2x00_enqueue_aen(ha, MBA_PORT_UPDATE, NULL);
break;
case MBA_RSCN_UPDATE: /* State Change Registration */
mb[1] = RD_MAILBOX_REG(ha, reg, 1);
mb[2] = RD_MAILBOX_REG(ha, reg, 2);
DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
ha->host_no));
DEBUG(printk(KERN_INFO
"scsi(%ld): RSCN database changed -- %04x %04x.\n",
ha->host_no, mb[1], mb[2]));
rscn_entry = (mb[1] << 16) | mb[2];
host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
ha->d_id.b.al_pa;
if (rscn_entry == host_pid) {
DEBUG(printk(KERN_INFO
"scsi(%ld): Ignoring RSCN update to local host "
"port ID (%06x)\n",
ha->host_no, host_pid));
break;
}
rscn_queue_index = ha->rscn_in_ptr + 1;
if (rscn_queue_index == MAX_RSCN_COUNT)
rscn_queue_index = 0;
if (rscn_queue_index != ha->rscn_out_ptr) {
ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry;
ha->rscn_in_ptr = rscn_queue_index;
} else {
ha->flags.rscn_queue_overflow = 1;
}
atomic_set(&ha->loop_state, LOOP_UPDATE);
atomic_set(&ha->loop_down_timer, 0);
ha->flags.management_server_logged_in = 0;
set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
set_bit(RSCN_UPDATE, &ha->dpc_flags);
/* Update AEN queue. */
qla2x00_enqueue_aen(ha, MBA_RSCN_UPDATE, &mb[0]);
break;
/* case MBA_RIO_RESPONSE: */
case MBA_ZIO_RESPONSE:
DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n",
ha->host_no));
DEBUG(printk(KERN_INFO
"scsi(%ld): [R|Z]IO update completion.\n",
ha->host_no));
qla2x00_process_response_queue(ha);
break;
}
}
/**
* qla2x00_process_completed_request() - Process a Fast Post response.
* @ha: SCSI driver HA context
* @index: SRB index
*/
static void
qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
{
srb_t *sp;
/* Validate handle. */
if (index >= MAX_OUTSTANDING_COMMANDS) {
DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
ha->host_no, index));
qla_printk(KERN_WARNING, ha,
"Invalid SCSI completion handle %d.\n", index);
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
return;
}
sp = ha->outstanding_cmds[index];
if (sp) {
/* Free outstanding command slot. */
ha->outstanding_cmds[index] = NULL;
CMD_COMPL_STATUS(sp->cmd) = 0L;
CMD_SCSI_STATUS(sp->cmd) = 0L;
/* Save ISP completion status */
sp->cmd->result = DID_OK << 16;
qla2x00_sp_compl(ha, sp);
} else {
DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
ha->host_no));
qla_printk(KERN_WARNING, ha,
"Invalid ISP SCSI completion handle\n");
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
}
}
/**
* qla2x00_process_response_queue() - Process response queue entries.
* @ha: SCSI driver HA context
*/
void
qla2x00_process_response_queue(struct scsi_qla_host *ha)
{
device_reg_t __iomem *reg = ha->iobase;
sts_entry_t *pkt;
uint16_t handle_cnt;
uint16_t cnt;
if (!ha->flags.online)
return;
while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
pkt = (sts_entry_t *)ha->response_ring_ptr;
ha->rsp_ring_index++;
if (ha->rsp_ring_index == ha->response_q_length) {
ha->rsp_ring_index = 0;
ha->response_ring_ptr = ha->response_ring;
} else {
ha->response_ring_ptr++;
}
if (pkt->entry_status != 0) {
DEBUG3(printk(KERN_INFO
"scsi(%ld): Process error entry.\n", ha->host_no));
qla2x00_error_entry(ha, pkt);
((response_t *)pkt)->signature = RESPONSE_PROCESSED;
wmb();
continue;
}
switch (pkt->entry_type) {
case STATUS_TYPE:
qla2x00_status_entry(ha, pkt);
break;
case STATUS_TYPE_21:
handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
for (cnt = 0; cnt < handle_cnt; cnt++) {
qla2x00_process_completed_request(ha,
((sts21_entry_t *)pkt)->handle[cnt]);
}
break;
case STATUS_TYPE_22:
handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
for (cnt = 0; cnt < handle_cnt; cnt++) {
qla2x00_process_completed_request(ha,
((sts22_entry_t *)pkt)->handle[cnt]);
}
break;
case STATUS_CONT_TYPE:
qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
break;
case MS_IOCB_TYPE:
qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt);
break;
case MBX_IOCB_TYPE:
if (!IS_QLA2100(ha) && !IS_QLA2200(ha) &&
!IS_QLA6312(ha) && !IS_QLA6322(ha)) {
if (pkt->sys_define == SOURCE_ASYNC_IOCB) {
qla2x00_process_iodesc(ha,
(struct mbx_entry *)pkt);
} else {
/* MBX IOCB Type Not Supported. */
DEBUG4(printk(KERN_WARNING
"scsi(%ld): Received unknown MBX "
"IOCB response pkt type=%x "
"source=%x entry status=%x.\n",
ha->host_no, pkt->entry_type,
pkt->sys_define,
pkt->entry_status));
}
break;
}
/* Fallthrough. */
default:
/* Type Not Supported. */
DEBUG4(printk(KERN_WARNING
"scsi(%ld): Received unknown response pkt type %x "
"entry status=%x.\n",
ha->host_no, pkt->entry_type, pkt->entry_status));
break;
}
((response_t *)pkt)->signature = RESPONSE_PROCESSED;
wmb();
}
/* Adjust ring index */
WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
}
/**
* qla2x00_status_entry() - Process a Status IOCB entry.
* @ha: SCSI driver HA context
* @pkt: Entry pointer
*/
static void
qla2x00_status_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
{
unsigned b, t, l;
srb_t *sp;
fc_port_t *fcport;
struct scsi_cmnd *cp;
uint16_t comp_status;
uint16_t scsi_status;
uint8_t lscsi_status;
int32_t resid;
uint8_t sense_sz = 0;
uint16_t rsp_info_len;
/* Fast path completion. */
if (le16_to_cpu(pkt->comp_status) == CS_COMPLETE &&
(le16_to_cpu(pkt->scsi_status) & SS_MASK) == 0) {
qla2x00_process_completed_request(ha, pkt->handle);
return;
}
/* Validate handle. */
if (pkt->handle < MAX_OUTSTANDING_COMMANDS) {
sp = ha->outstanding_cmds[pkt->handle];
ha->outstanding_cmds[pkt->handle] = NULL;
} else
sp = NULL;
if (sp == NULL) {
DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
ha->host_no));
qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
if (ha->dpc_wait && !ha->dpc_active)
up(ha->dpc_wait);
return;
}
cp = sp->cmd;
if (cp == NULL) {
DEBUG2(printk("scsi(%ld): Command already returned back to OS "
"pkt->handle=%d sp=%p sp->state:%d\n",
ha->host_no, pkt->handle, sp, sp->state));
qla_printk(KERN_WARNING, ha,
"Command is NULL: already returned to OS (sp=%p)\n", sp);
return;
}
comp_status = le16_to_cpu(pkt->comp_status);
/* Mask of reserved bits 12-15, before we examine the scsi status */
scsi_status = le16_to_cpu(pkt->scsi_status) & SS_MASK;
lscsi_status = scsi_status & STATUS_MASK;
CMD_ENTRY_STATUS(cp) = pkt->entry_status;
CMD_COMPL_STATUS(cp) = comp_status;
CMD_SCSI_STATUS(cp) = scsi_status;
/* Generate LU queue on cntrl, target, LUN */
b = cp->device->channel;
t = cp->device->id;
l = cp->device->lun,
fcport = sp->fcport;
/* Check for any FCP transport errors. */
if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
rsp_info_len = le16_to_cpu(pkt->rsp_info_len);
if (rsp_info_len > 3 && pkt->rsp_info[3]) {
DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
"failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
"retrying command\n", ha->host_no, b, t, l,
rsp_info_len, pkt->rsp_info[0], pkt->rsp_info[1],
pkt->rsp_info[2], pkt->rsp_info[3],
pkt->rsp_info[4], pkt->rsp_info[5],
pkt->rsp_info[6], pkt->rsp_info[7]));
cp->result = DID_BUS_BUSY << 16;
qla2x00_sp_compl(ha, sp);
return;
}
}
/*
* Based on Host and scsi status generate status code for Linux
*/
switch (comp_status) {
case CS_COMPLETE:
if (scsi_status == 0) {
cp->result = DID_OK << 16;
break;
}
if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
resid = le32_to_cpu(pkt->residual_length);
cp->resid = resid;
CMD_RESID_LEN(cp) = resid;
}
cp->result = DID_OK << 16 | lscsi_status;
if (lscsi_status != SS_CHECK_CONDITION)
break;
/*
* Copy Sense Data into sense buffer
*/
memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
if (!(scsi_status & SS_SENSE_LEN_VALID))
break;
if (le16_to_cpu(pkt->req_sense_length) <
sizeof(cp->sense_buffer))
sense_sz = le16_to_cpu(pkt->req_sense_length);
else
sense_sz = sizeof(cp->sense_buffer);
CMD_ACTUAL_SNSLEN(cp) = sense_sz;
sp->request_sense_length = sense_sz;
sp->request_sense_ptr = cp->sense_buffer;
if (sp->request_sense_length > 32)
sense_sz = 32;
memcpy(cp->sense_buffer, pkt->req_sense_data, sense_sz);
sp->request_sense_ptr += sense_sz;
sp->request_sense_length -= sense_sz;
if (sp->request_sense_length != 0)
ha->status_srb = sp;
DEBUG5(printk("%s(): Check condition Sense data, "
"scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
__func__, ha->host_no, b, t, l, cp,
cp->serial_number));
if (sense_sz)
DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
CMD_ACTUAL_SNSLEN(cp)));
break;
case CS_DATA_UNDERRUN:
DEBUG2(printk(KERN_INFO
"scsi(%ld:%d:%d) UNDERRUN status detected 0x%x-0x%x.\n",
ha->host_no, t, l, comp_status, scsi_status));
resid = le32_to_cpu(pkt->residual_length);
if (scsi_status & SS_RESIDUAL_UNDER) {
cp->resid = resid;
CMD_RESID_LEN(cp) = resid;
}
/*
* Check to see if SCSI Status is non zero. If so report SCSI
* Status.
*/
if (lscsi_status != 0) {
cp->result = DID_OK << 16 | lscsi_status;
if (lscsi_status != SS_CHECK_CONDITION)
break;
/* Copy Sense Data into sense buffer */
memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
if (!(scsi_status & SS_SENSE_LEN_VALID))
break;
if (le16_to_cpu(pkt->req_sense_length) <
sizeof(cp->sense_buffer))
sense_sz = le16_to_cpu(pkt->req_sense_length);
else
sense_sz = sizeof(cp->sense_buffer);
CMD_ACTUAL_SNSLEN(cp) = sense_sz;
sp->request_sense_length = sense_sz;
sp->request_sense_ptr = cp->sense_buffer;
if (sp->request_sense_length > 32)
sense_sz = 32;
memcpy(cp->sense_buffer, pkt->req_sense_data, sense_sz);
sp->request_sense_ptr += sense_sz;
sp->request_sense_length -= sense_sz;
if (sp->request_sense_length != 0)
ha->status_srb = sp;
DEBUG5(printk("%s(): Check condition Sense data, "
"scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
__func__, ha->host_no, b, t, l, cp,
cp->serial_number));
if (sense_sz)
DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
CMD_ACTUAL_SNSLEN(cp)));
} else {
/*
* If RISC reports underrun and target does not report
* it then we must have a lost frame, so tell upper
* layer to retry it by reporting a bus busy.
*/
if (!(scsi_status & SS_RESIDUAL_UNDER)) {
DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
"frame(s) detected (%x of %x bytes)..."
"retrying command.\n",
ha->host_no, b, t, l, resid,
cp->request_bufflen));
cp->result = DID_BUS_BUSY << 16;
break;
}
/* Handle mid-layer underflow */
if ((unsigned)(cp->request_bufflen - resid) <
cp->underflow) {
qla_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d:%d): Mid-layer underflow "
"detected (%x of %x bytes)...returning "
"error status.\n",
ha->host_no, b, t, l, resid,
cp->request_bufflen);
cp->result = DID_ERROR << 16;
break;
}
/* Everybody online, looking good... */
cp->result = DID_OK << 16;
}
break;
case CS_DATA_OVERRUN:
DEBUG2(printk(KERN_INFO
"scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
ha->host_no, t, l, comp_status, scsi_status));
DEBUG2(printk(KERN_INFO
"CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
cp->cmnd[4], cp->cmnd[5]));
DEBUG2(printk(KERN_INFO
"PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
"status!\n",
cp->serial_number, cp->request_bufflen,
le32_to_cpu(pkt->residual_length)));
cp->result = DID_ERROR << 16;
break;
case CS_PORT_LOGGED_OUT:
case CS_PORT_CONFIG_CHG:
case CS_PORT_BUSY:
case CS_INCOMPLETE:
case CS_PORT_UNAVAILABLE:
/*
* If the port is in Target Down state, return all IOs for this
* Target with DID_NO_CONNECT ELSE Queue the IOs in the
* retry_queue.
*/
DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
"pid=%ld, compl status=0x%x, port state=0x%x\n",
ha->host_no, t, l, cp->serial_number, comp_status,
atomic_read(&fcport->state)));
cp->result = DID_BUS_BUSY << 16;
if (atomic_read(&fcport->state) == FCS_ONLINE) {
qla2x00_mark_device_lost(ha, fcport, 1);
}
break;
case CS_RESET:
DEBUG2(printk(KERN_INFO
"scsi(%ld): RESET status detected 0x%x-0x%x.\n",
ha->host_no, comp_status, scsi_status));
cp->result = DID_RESET << 16;
break;
case CS_ABORTED:
/*
* hv2.19.12 - DID_ABORT does not retry the request if we
* aborted this request then abort otherwise it must be a
* reset.
*/
DEBUG2(printk(KERN_INFO
"scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
ha->host_no, comp_status, scsi_status));
cp->result = DID_RESET << 16;
break;
case CS_TIMEOUT:
DEBUG2(printk(KERN_INFO
"scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
"sflags=%x.\n", ha->host_no, b, t, l, comp_status,
scsi_status, le16_to_cpu(pkt->status_flags)));
cp->result = DID_BUS_BUSY << 16;
/* Check to see if logout occurred */
if ((le16_to_cpu(pkt->status_flags) & SF_LOGOUT_SENT)) {
qla2x00_mark_device_lost(ha, fcport, 1);
}
break;
case CS_QUEUE_FULL:
DEBUG2(printk(KERN_INFO
"scsi(%ld): QUEUE FULL status detected 0x%x-0x%x.\n",
ha->host_no, comp_status, scsi_status));
/* SCSI Mid-Layer handles device queue full */
cp->result = DID_OK << 16 | lscsi_status;
break;
default:
DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
"0x%x-0x%x.\n",
ha->host_no, comp_status, scsi_status));
qla_printk(KERN_INFO, ha,
"Unknown status detected 0x%x-0x%x.\n",
comp_status, scsi_status);
cp->result = DID_ERROR << 16;
break;
}
/* Place command on done queue. */
if (ha->status_srb == NULL)
qla2x00_sp_compl(ha, sp);
}
/**
* qla2x00_status_cont_entry() - Process a Status Continuations entry.
* @ha: SCSI driver HA context
* @pkt: Entry pointer
*
* Extended sense data.
*/
static void
qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
{
uint8_t sense_sz = 0;
srb_t *sp = ha->status_srb;
struct scsi_cmnd *cp;
if (sp != NULL && sp->request_sense_length != 0) {
cp = sp->cmd;
if (cp == NULL) {
DEBUG2(printk("%s(): Cmd already returned back to OS "
"sp=%p sp->state:%d\n", __func__, sp, sp->state));
qla_printk(KERN_INFO, ha,
"cmd is NULL: already returned to OS (sp=%p)\n",
sp);
ha->status_srb = NULL;
return;
}
if (sp->request_sense_length > sizeof(pkt->data)) {
sense_sz = sizeof(pkt->data);
} else {
sense_sz = sp->request_sense_length;
}
/* Move sense data. */
memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
sp->request_sense_ptr += sense_sz;
sp->request_sense_length -= sense_sz;
/* Place command on done queue. */
if (sp->request_sense_length == 0) {
ha->status_srb = NULL;
qla2x00_sp_compl(ha, sp);
}
}
}
/**
* qla2x00_error_entry() - Process an error entry.
* @ha: SCSI driver HA context
* @pkt: Entry pointer
*/
static void
qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
{
srb_t *sp;
#if defined(QL_DEBUG_LEVEL_2)
if (pkt->entry_status & RF_INV_E_ORDER)
qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
else if (pkt->entry_status & RF_INV_E_COUNT)
qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
else if (pkt->entry_status & RF_INV_E_PARAM)
qla_printk(KERN_ERR, ha,
"%s: Invalid Entry Parameter\n", __func__);
else if (pkt->entry_status & RF_INV_E_TYPE)
qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
else if (pkt->entry_status & RF_BUSY)
qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
else
qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
#endif
/* Validate handle. */
if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
sp = ha->outstanding_cmds[pkt->handle];
else
sp = NULL;
if (sp) {
/* Free outstanding command slot. */
ha->outstanding_cmds[pkt->handle] = NULL;
/* Bad payload or header */
if (pkt->entry_status &
(RF_INV_E_ORDER | RF_INV_E_COUNT |
RF_INV_E_PARAM | RF_INV_E_TYPE)) {
sp->cmd->result = DID_ERROR << 16;
} else if (pkt->entry_status & RF_BUSY) {
sp->cmd->result = DID_BUS_BUSY << 16;
} else {
sp->cmd->result = DID_ERROR << 16;
}
qla2x00_sp_compl(ha, sp);
} else if (pkt->entry_type == COMMAND_A64_TYPE ||
pkt->entry_type == COMMAND_TYPE) {
DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
ha->host_no));
qla_printk(KERN_WARNING, ha,
"Error entry - invalid handle\n");
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
if (ha->dpc_wait && !ha->dpc_active)
up(ha->dpc_wait);
}
}
/**
* qla2x00_ms_entry() - Process a Management Server entry.
* @ha: SCSI driver HA context
* @index: Response queue out pointer
*/
static void
qla2x00_ms_entry(scsi_qla_host_t *ha, ms_iocb_entry_t *pkt)
{
srb_t *sp;
DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
__func__, ha->host_no, pkt, pkt->handle1));
/* Validate handle. */
if (pkt->handle1 < MAX_OUTSTANDING_COMMANDS)
sp = ha->outstanding_cmds[pkt->handle1];
else
sp = NULL;
if (sp == NULL) {
DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
ha->host_no));
qla_printk(KERN_WARNING, ha, "MS entry - invalid handle\n");
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
return;
}
CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->status);
CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
/* Free outstanding command slot. */
ha->outstanding_cmds[pkt->handle1] = NULL;
qla2x00_sp_compl(ha, sp);
}
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