Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
kernel-fxtec-pro1x/drivers/scsi/qla2xxx/qla_isr.c
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00

2387 lines
64 KiB
C
Raw Blame History

/*
* QLogic Fibre Channel HBA Driver
* Copyright (c) 2003-2008 QLogic Corporation
*
* See LICENSE.qla2xxx for copyright and licensing details.
*/
#include "qla_def.h"
#include <linux/delay.h>
#include <linux/slab.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_bsg_fc.h>
static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
static void qla2x00_process_completed_request(struct scsi_qla_host *,
struct req_que *, uint32_t);
static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
static void qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
sts_entry_t *);
/**
* qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
* @irq:
* @dev_id: SCSI driver HA context
*
* Called by system whenever the host adapter generates an interrupt.
*
* Returns handled flag.
*/
irqreturn_t
qla2100_intr_handler(int irq, void *dev_id)
{
scsi_qla_host_t *vha;
struct qla_hw_data *ha;
struct device_reg_2xxx __iomem *reg;
int status;
unsigned long iter;
uint16_t hccr;
uint16_t mb[4];
struct rsp_que *rsp;
unsigned long flags;
rsp = (struct rsp_que *) dev_id;
if (!rsp) {
printk(KERN_INFO
"%s(): NULL response queue pointer\n", __func__);
return (IRQ_NONE);
}
ha = rsp->hw;
reg = &ha->iobase->isp;
status = 0;
spin_lock_irqsave(&ha->hardware_lock, flags);
vha = pci_get_drvdata(ha->pdev);
for (iter = 50; iter--; ) {
hccr = RD_REG_WORD(&reg->hccr);
if (hccr & HCCR_RISC_PAUSE) {
if (pci_channel_offline(ha->pdev))
break;
/*
* 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);
ha->isp_ops->fw_dump(vha, 1);
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
break;
} else 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. */
mb[0] = RD_MAILBOX_REG(ha, reg, 0);
if (mb[0] > 0x3fff && mb[0] < 0x8000) {
qla2x00_mbx_completion(vha, mb[0]);
status |= MBX_INTERRUPT;
} else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
mb[1] = RD_MAILBOX_REG(ha, reg, 1);
mb[2] = RD_MAILBOX_REG(ha, reg, 2);
mb[3] = RD_MAILBOX_REG(ha, reg, 3);
qla2x00_async_event(vha, rsp, mb);
} else {
/*EMPTY*/
DEBUG2(printk("scsi(%ld): Unrecognized "
"interrupt type (%d).\n",
vha->host_no, mb[0]));
}
/* Release mailbox registers. */
WRT_REG_WORD(&reg->semaphore, 0);
RD_REG_WORD(&reg->semaphore);
} else {
qla2x00_process_response_queue(rsp);
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) {
set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
complete(&ha->mbx_intr_comp);
}
return (IRQ_HANDLED);
}
/**
* qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
* @irq:
* @dev_id: SCSI driver HA context
*
* Called by system whenever the host adapter generates an interrupt.
*
* Returns handled flag.
*/
irqreturn_t
qla2300_intr_handler(int irq, void *dev_id)
{
scsi_qla_host_t *vha;
struct device_reg_2xxx __iomem *reg;
int status;
unsigned long iter;
uint32_t stat;
uint16_t hccr;
uint16_t mb[4];
struct rsp_que *rsp;
struct qla_hw_data *ha;
unsigned long flags;
rsp = (struct rsp_que *) dev_id;
if (!rsp) {
printk(KERN_INFO
"%s(): NULL response queue pointer\n", __func__);
return (IRQ_NONE);
}
ha = rsp->hw;
reg = &ha->iobase->isp;
status = 0;
spin_lock_irqsave(&ha->hardware_lock, flags);
vha = pci_get_drvdata(ha->pdev);
for (iter = 50; iter--; ) {
stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
if (stat & HSR_RISC_PAUSED) {
if (unlikely(pci_channel_offline(ha->pdev)))
break;
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, Dumping firmware!\n", hccr);
else
qla_printk(KERN_INFO, ha, "RISC paused -- "
"HCCR=%x, Dumping firmware!\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);
ha->isp_ops->fw_dump(vha, 1);
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
break;
} else if ((stat & HSR_RISC_INT) == 0)
break;
switch (stat & 0xff) {
case 0x1:
case 0x2:
case 0x10:
case 0x11:
qla2x00_mbx_completion(vha, MSW(stat));
status |= MBX_INTERRUPT;
/* Release mailbox registers. */
WRT_REG_WORD(&reg->semaphore, 0);
break;
case 0x12:
mb[0] = MSW(stat);
mb[1] = RD_MAILBOX_REG(ha, reg, 1);
mb[2] = RD_MAILBOX_REG(ha, reg, 2);
mb[3] = RD_MAILBOX_REG(ha, reg, 3);
qla2x00_async_event(vha, rsp, mb);
break;
case 0x13:
qla2x00_process_response_queue(rsp);
break;
case 0x15:
mb[0] = MBA_CMPLT_1_16BIT;
mb[1] = MSW(stat);
qla2x00_async_event(vha, rsp, mb);
break;
case 0x16:
mb[0] = MBA_SCSI_COMPLETION;
mb[1] = MSW(stat);
mb[2] = RD_MAILBOX_REG(ha, reg, 2);
qla2x00_async_event(vha, rsp, mb);
break;
default:
DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
"(%d).\n",
vha->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) {
set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
complete(&ha->mbx_intr_comp);
}
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 *vha, uint16_t mb0)
{
uint16_t cnt;
uint16_t __iomem *wptr;
struct qla_hw_data *ha = vha->hw;
struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
/* 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__, vha->host_no, ha->mcp->mb[0]));
} else {
DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
__func__, vha->host_no));
}
}
static void
qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
{
static char *event[] =
{ "Complete", "Request Notification", "Time Extension" };
int rval;
struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
uint16_t __iomem *wptr;
uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
/* Seed data -- mailbox1 -> mailbox7. */
wptr = (uint16_t __iomem *)&reg24->mailbox1;
for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
mb[cnt] = RD_REG_WORD(wptr);
DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
"%04x %04x %04x %04x %04x %04x %04x.\n", vha->host_no,
event[aen & 0xff],
mb[0], mb[1], mb[2], mb[3], mb[4], mb[5], mb[6]));
/* Acknowledgement needed? [Notify && non-zero timeout]. */
timeout = (descr >> 8) & 0xf;
if (aen != MBA_IDC_NOTIFY || !timeout)
return;
DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
"ACK timeout=%d.\n", vha->host_no, event[aen & 0xff], timeout));
rval = qla2x00_post_idc_ack_work(vha, mb);
if (rval != QLA_SUCCESS)
qla_printk(KERN_WARNING, vha->hw,
"IDC failed to post ACK.\n");
}
/**
* qla2x00_async_event() - Process aynchronous events.
* @ha: SCSI driver HA context
* @mb: Mailbox registers (0 - 3)
*/
void
qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
{
#define LS_UNKNOWN 2
static char *link_speeds[] = { "1", "2", "?", "4", "8", "10" };
char *link_speed;
uint16_t handle_cnt;
uint16_t cnt, mbx;
uint32_t handles[5];
struct qla_hw_data *ha = vha->hw;
struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
uint32_t rscn_entry, host_pid;
uint8_t rscn_queue_index;
unsigned long flags;
/* Setup to process RIO completion. */
handle_cnt = 0;
if (IS_QLA81XX(ha))
goto skip_rio;
switch (mb[0]) {
case MBA_SCSI_COMPLETION:
handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
handle_cnt = 1;
break;
case MBA_CMPLT_1_16BIT:
handles[0] = mb[1];
handle_cnt = 1;
mb[0] = MBA_SCSI_COMPLETION;
break;
case MBA_CMPLT_2_16BIT:
handles[0] = mb[1];
handles[1] = mb[2];
handle_cnt = 2;
mb[0] = MBA_SCSI_COMPLETION;
break;
case MBA_CMPLT_3_16BIT:
handles[0] = mb[1];
handles[1] = mb[2];
handles[2] = mb[3];
handle_cnt = 3;
mb[0] = MBA_SCSI_COMPLETION;
break;
case MBA_CMPLT_4_16BIT:
handles[0] = mb[1];
handles[1] = mb[2];
handles[2] = mb[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] = mb[1];
handles[1] = mb[2];
handles[2] = mb[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)((mb[2] << 16) | mb[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;
}
skip_rio:
switch (mb[0]) {
case MBA_SCSI_COMPLETION: /* Fast Post */
if (!vha->flags.online)
break;
for (cnt = 0; cnt < handle_cnt; cnt++)
qla2x00_process_completed_request(vha, rsp->req,
handles[cnt]);
break;
case MBA_RESET: /* Reset */
DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n",
vha->host_no));
set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
break;
case MBA_SYSTEM_ERR: /* System Error */
mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox7) : 0;
qla_printk(KERN_INFO, ha,
"ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh "
"mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
ha->isp_ops->fw_dump(vha, 1);
if (IS_FWI2_CAPABLE(ha)) {
if (mb[1] == 0 && mb[2] == 0) {
qla_printk(KERN_ERR, ha,
"Unrecoverable Hardware Error: adapter "
"marked OFFLINE!\n");
vha->flags.online = 0;
} else
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
} else if (mb[1] == 0) {
qla_printk(KERN_INFO, ha,
"Unrecoverable Hardware Error: adapter marked "
"OFFLINE!\n");
vha->flags.online = 0;
} else
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
break;
case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
DEBUG2(printk("scsi(%ld): ISP Request Transfer Error (%x).\n",
vha->host_no, mb[1]));
qla_printk(KERN_WARNING, ha,
"ISP Request Transfer Error (%x).\n", mb[1]);
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
break;
case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
vha->host_no));
qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
break;
case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
vha->host_no));
break;
case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
DEBUG2(printk("scsi(%ld): LIP occurred (%x).\n", vha->host_no,
mb[1]));
qla_printk(KERN_INFO, ha, "LIP occurred (%x).\n", mb[1]);
if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
atomic_set(&vha->loop_state, LOOP_DOWN);
atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
qla2x00_mark_all_devices_lost(vha, 1);
}
if (vha->vp_idx) {
atomic_set(&vha->vp_state, VP_FAILED);
fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
}
set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
vha->flags.management_server_logged_in = 0;
qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
break;
case MBA_LOOP_UP: /* Loop Up Event */
if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
link_speed = link_speeds[0];
ha->link_data_rate = PORT_SPEED_1GB;
} else {
link_speed = link_speeds[LS_UNKNOWN];
if (mb[1] < 5)
link_speed = link_speeds[mb[1]];
else if (mb[1] == 0x13)
link_speed = link_speeds[5];
ha->link_data_rate = mb[1];
}
DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
vha->host_no, link_speed));
qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
link_speed);
vha->flags.management_server_logged_in = 0;
qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
break;
case MBA_LOOP_DOWN: /* Loop Down Event */
mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox4) : 0;
DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN "
"(%x %x %x %x).\n", vha->host_no, mb[1], mb[2], mb[3],
mbx));
qla_printk(KERN_INFO, ha,
"LOOP DOWN detected (%x %x %x %x).\n", mb[1], mb[2], mb[3],
mbx);
if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
atomic_set(&vha->loop_state, LOOP_DOWN);
atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
vha->device_flags |= DFLG_NO_CABLE;
qla2x00_mark_all_devices_lost(vha, 1);
}
if (vha->vp_idx) {
atomic_set(&vha->vp_state, VP_FAILED);
fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
}
vha->flags.management_server_logged_in = 0;
ha->link_data_rate = PORT_SPEED_UNKNOWN;
qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
break;
case MBA_LIP_RESET: /* LIP reset occurred */
DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
vha->host_no, mb[1]));
qla_printk(KERN_INFO, ha,
"LIP reset occurred (%x).\n", mb[1]);
if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
atomic_set(&vha->loop_state, LOOP_DOWN);
atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
qla2x00_mark_all_devices_lost(vha, 1);
}
if (vha->vp_idx) {
atomic_set(&vha->vp_state, VP_FAILED);
fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
}
set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
ha->operating_mode = LOOP;
vha->flags.management_server_logged_in = 0;
qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
break;
/* case MBA_DCBX_COMPLETE: */
case MBA_POINT_TO_POINT: /* Point-to-Point */
if (IS_QLA2100(ha))
break;
if (IS_QLA81XX(ha))
DEBUG2(printk("scsi(%ld): DCBX Completed -- %04x %04x "
"%04x\n", vha->host_no, mb[1], mb[2], mb[3]));
else
DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE "
"received.\n", vha->host_no));
/*
* Until there's a transition from loop down to loop up, treat
* this as loop down only.
*/
if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
atomic_set(&vha->loop_state, LOOP_DOWN);
if (!atomic_read(&vha->loop_down_timer))
atomic_set(&vha->loop_down_timer,
LOOP_DOWN_TIME);
qla2x00_mark_all_devices_lost(vha, 1);
}
if (vha->vp_idx) {
atomic_set(&vha->vp_state, VP_FAILED);
fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
}
if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
ha->flags.gpsc_supported = 1;
vha->flags.management_server_logged_in = 0;
break;
case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
if (IS_QLA2100(ha))
break;
DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
"received.\n",
vha->host_no));
qla_printk(KERN_INFO, ha,
"Configuration change detected: value=%x.\n", mb[1]);
if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
atomic_set(&vha->loop_state, LOOP_DOWN);
if (!atomic_read(&vha->loop_down_timer))
atomic_set(&vha->loop_down_timer,
LOOP_DOWN_TIME);
qla2x00_mark_all_devices_lost(vha, 1);
}
if (vha->vp_idx) {
atomic_set(&vha->vp_state, VP_FAILED);
fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
}
set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
break;
case MBA_PORT_UPDATE: /* Port database update */
/*
* Handle only global and vn-port update events
*
* Relevant inputs:
* mb[1] = N_Port handle of changed port
* OR 0xffff for global event
* mb[2] = New login state
* 7 = Port logged out
* mb[3] = LSB is vp_idx, 0xff = all vps
*
* Skip processing if:
* Event is global, vp_idx is NOT all vps,
* vp_idx does not match
* Event is not global, vp_idx does not match
*/
if ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff)
|| (mb[1] != 0xffff)) {
if (vha->vp_idx != (mb[3] & 0xff))
break;
}
/* Global event -- port logout or port unavailable. */
if (mb[1] == 0xffff && mb[2] == 0x7) {
DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
vha->host_no));
DEBUG(printk(KERN_INFO
"scsi(%ld): Port unavailable %04x %04x %04x.\n",
vha->host_no, mb[1], mb[2], mb[3]));
if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
atomic_set(&vha->loop_state, LOOP_DOWN);
atomic_set(&vha->loop_down_timer,
LOOP_DOWN_TIME);
vha->device_flags |= DFLG_NO_CABLE;
qla2x00_mark_all_devices_lost(vha, 1);
}
if (vha->vp_idx) {
atomic_set(&vha->vp_state, VP_FAILED);
fc_vport_set_state(vha->fc_vport,
FC_VPORT_FAILED);
qla2x00_mark_all_devices_lost(vha, 1);
}
vha->flags.management_server_logged_in = 0;
ha->link_data_rate = PORT_SPEED_UNKNOWN;
break;
}
/*
* If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
* event etc. earlier indicating loop is down) then process
* it. Otherwise ignore it and Wait for RSCN to come in.
*/
atomic_set(&vha->loop_down_timer, 0);
if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
atomic_read(&vha->loop_state) != LOOP_DEAD) {
DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
"ignored %04x/%04x/%04x.\n", vha->host_no, mb[1],
mb[2], mb[3]));
break;
}
DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
vha->host_no));
DEBUG(printk(KERN_INFO
"scsi(%ld): Port database changed %04x %04x %04x.\n",
vha->host_no, mb[1], mb[2], mb[3]));
/*
* Mark all devices as missing so we will login again.
*/
atomic_set(&vha->loop_state, LOOP_UP);
qla2x00_mark_all_devices_lost(vha, 1);
vha->flags.rscn_queue_overflow = 1;
set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
break;
case MBA_RSCN_UPDATE: /* State Change Registration */
/* Check if the Vport has issued a SCR */
if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
break;
/* Only handle SCNs for our Vport index. */
if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
break;
DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
vha->host_no));
DEBUG(printk(KERN_INFO
"scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
vha->host_no, mb[1], mb[2], mb[3]));
rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
| vha->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",
vha->host_no, host_pid));
break;
}
/* Ignore reserved bits from RSCN-payload. */
rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
rscn_queue_index = vha->rscn_in_ptr + 1;
if (rscn_queue_index == MAX_RSCN_COUNT)
rscn_queue_index = 0;
if (rscn_queue_index != vha->rscn_out_ptr) {
vha->rscn_queue[vha->rscn_in_ptr] = rscn_entry;
vha->rscn_in_ptr = rscn_queue_index;
} else {
vha->flags.rscn_queue_overflow = 1;
}
atomic_set(&vha->loop_state, LOOP_UPDATE);
atomic_set(&vha->loop_down_timer, 0);
vha->flags.management_server_logged_in = 0;
set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
set_bit(RSCN_UPDATE, &vha->dpc_flags);
qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
break;
/* case MBA_RIO_RESPONSE: */
case MBA_ZIO_RESPONSE:
DEBUG3(printk("scsi(%ld): [R|Z]IO update completion.\n",
vha->host_no));
if (IS_FWI2_CAPABLE(ha))
qla24xx_process_response_queue(vha, rsp);
else
qla2x00_process_response_queue(rsp);
break;
case MBA_DISCARD_RND_FRAME:
DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
"%04x.\n", vha->host_no, mb[1], mb[2], mb[3]));
break;
case MBA_TRACE_NOTIFICATION:
DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
vha->host_no, mb[1], mb[2]));
break;
case MBA_ISP84XX_ALERT:
DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- "
"%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
switch (mb[1]) {
case A84_PANIC_RECOVERY:
qla_printk(KERN_INFO, ha, "Alert 84XX: panic recovery "
"%04x %04x\n", mb[2], mb[3]);
break;
case A84_OP_LOGIN_COMPLETE:
ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
"firmware version %x\n", ha->cs84xx->op_fw_version));
break;
case A84_DIAG_LOGIN_COMPLETE:
ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
"diagnostic firmware version %x\n",
ha->cs84xx->diag_fw_version));
break;
case A84_GOLD_LOGIN_COMPLETE:
ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
ha->cs84xx->fw_update = 1;
DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX: gold "
"firmware version %x\n",
ha->cs84xx->gold_fw_version));
break;
default:
qla_printk(KERN_ERR, ha,
"Alert 84xx: Invalid Alert %04x %04x %04x\n",
mb[1], mb[2], mb[3]);
}
spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
break;
case MBA_DCBX_START:
DEBUG2(printk("scsi(%ld): DCBX Started -- %04x %04x %04x\n",
vha->host_no, mb[1], mb[2], mb[3]));
break;
case MBA_DCBX_PARAM_UPDATE:
DEBUG2(printk("scsi(%ld): DCBX Parameters Updated -- "
"%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
break;
case MBA_FCF_CONF_ERR:
DEBUG2(printk("scsi(%ld): FCF Configuration Error -- "
"%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
break;
case MBA_IDC_COMPLETE:
case MBA_IDC_NOTIFY:
case MBA_IDC_TIME_EXT:
qla81xx_idc_event(vha, mb[0], mb[1]);
break;
}
if (!vha->vp_idx && ha->num_vhosts)
qla2x00_alert_all_vps(rsp, mb);
}
/**
* 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 *vha,
struct req_que *req, uint32_t index)
{
srb_t *sp;
struct qla_hw_data *ha = vha->hw;
/* Validate handle. */
if (index >= MAX_OUTSTANDING_COMMANDS) {
DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
vha->host_no, index));
qla_printk(KERN_WARNING, ha,
"Invalid SCSI completion handle %d.\n", index);
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
return;
}
sp = req->outstanding_cmds[index];
if (sp) {
/* Free outstanding command slot. */
req->outstanding_cmds[index] = NULL;
/* Save ISP completion status */
sp->cmd->result = DID_OK << 16;
qla2x00_sp_compl(ha, sp);
} else {
DEBUG2(printk("scsi(%ld) Req:%d: Invalid ISP SCSI completion"
" handle(%d)\n", vha->host_no, req->id, index));
qla_printk(KERN_WARNING, ha,
"Invalid ISP SCSI completion handle\n");
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
}
}
static srb_t *
qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
struct req_que *req, void *iocb)
{
struct qla_hw_data *ha = vha->hw;
sts_entry_t *pkt = iocb;
srb_t *sp = NULL;
uint16_t index;
index = LSW(pkt->handle);
if (index >= MAX_OUTSTANDING_COMMANDS) {
qla_printk(KERN_WARNING, ha,
"%s: Invalid completion handle (%x).\n", func, index);
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
goto done;
}
sp = req->outstanding_cmds[index];
if (!sp) {
qla_printk(KERN_WARNING, ha,
"%s: Invalid completion handle (%x) -- timed-out.\n", func,
index);
return sp;
}
if (sp->handle != index) {
qla_printk(KERN_WARNING, ha,
"%s: SRB handle (%x) mismatch %x.\n", func, sp->handle,
index);
return NULL;
}
req->outstanding_cmds[index] = NULL;
done:
return sp;
}
static void
qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
struct mbx_entry *mbx)
{
const char func[] = "MBX-IOCB";
const char *type;
struct qla_hw_data *ha = vha->hw;
fc_port_t *fcport;
srb_t *sp;
struct srb_logio *lio;
uint16_t data[2];
sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
if (!sp)
return;
type = NULL;
lio = sp->ctx;
switch (lio->ctx.type) {
case SRB_LOGIN_CMD:
type = "login";
break;
case SRB_LOGOUT_CMD:
type = "logout";
break;
default:
qla_printk(KERN_WARNING, ha,
"%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
lio->ctx.type);
return;
}
del_timer(&lio->ctx.timer);
fcport = sp->fcport;
data[0] = data[1] = 0;
if (mbx->entry_status) {
DEBUG2(printk(KERN_WARNING
"scsi(%ld:%x): Async-%s error entry - entry-status=%x "
"status=%x state-flag=%x status-flags=%x.\n",
fcport->vha->host_no, sp->handle, type,
mbx->entry_status, le16_to_cpu(mbx->status),
le16_to_cpu(mbx->state_flags),
le16_to_cpu(mbx->status_flags)));
DEBUG2(qla2x00_dump_buffer((uint8_t *)mbx, sizeof(*mbx)));
data[0] = MBS_COMMAND_ERROR;
data[1] = lio->flags & SRB_LOGIN_RETRIED ?
QLA_LOGIO_LOGIN_RETRIED: 0;
goto done_post_logio_done_work;
}
if (!mbx->status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
DEBUG2(printk(KERN_DEBUG
"scsi(%ld:%x): Async-%s complete - mbx1=%x.\n",
fcport->vha->host_no, sp->handle, type,
le16_to_cpu(mbx->mb1)));
data[0] = MBS_COMMAND_COMPLETE;
if (lio->ctx.type == SRB_LOGIN_CMD && le16_to_cpu(mbx->mb1) & BIT_1)
fcport->flags |= FCF_FCP2_DEVICE;
goto done_post_logio_done_work;
}
data[0] = le16_to_cpu(mbx->mb0);
switch (data[0]) {
case MBS_PORT_ID_USED:
data[1] = le16_to_cpu(mbx->mb1);
break;
case MBS_LOOP_ID_USED:
break;
default:
data[0] = MBS_COMMAND_ERROR;
data[1] = lio->flags & SRB_LOGIN_RETRIED ?
QLA_LOGIO_LOGIN_RETRIED: 0;
break;
}
DEBUG2(printk(KERN_WARNING
"scsi(%ld:%x): Async-%s failed - status=%x mb0=%x mb1=%x mb2=%x "
"mb6=%x mb7=%x.\n",
fcport->vha->host_no, sp->handle, type, le16_to_cpu(mbx->status),
le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
le16_to_cpu(mbx->mb7)));
done_post_logio_done_work:
lio->ctx.type == SRB_LOGIN_CMD ?
qla2x00_post_async_login_done_work(fcport->vha, fcport, data):
qla2x00_post_async_logout_done_work(fcport->vha, fcport, data);
lio->ctx.free(sp);
}
static void
qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
struct sts_entry_24xx *pkt, int iocb_type)
{
const char func[] = "ELS_CT_IOCB";
const char *type;
struct qla_hw_data *ha = vha->hw;
srb_t *sp;
struct srb_bsg *sp_bsg;
struct fc_bsg_job *bsg_job;
uint16_t comp_status;
uint32_t fw_status[3];
uint8_t* fw_sts_ptr;
sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
if (!sp)
return;
sp_bsg = (struct srb_bsg*)sp->ctx;
bsg_job = sp_bsg->bsg_job;
type = NULL;
switch (sp_bsg->ctx.type) {
case SRB_ELS_CMD_RPT:
case SRB_ELS_CMD_HST:
type = "els";
break;
case SRB_CT_CMD:
type = "ct pass-through";
break;
default:
qla_printk(KERN_WARNING, ha,
"%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
sp_bsg->ctx.type);
return;
}
comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1);
fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2);
/* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
* fc payload to the caller
*/
bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
if (comp_status != CS_COMPLETE) {
if (comp_status == CS_DATA_UNDERRUN) {
bsg_job->reply->result = DID_OK << 16;
bsg_job->reply->reply_payload_rcv_len =
le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->total_byte_count);
DEBUG2(qla_printk(KERN_WARNING, ha,
"scsi(%ld:0x%x): ELS-CT pass-through-%s error comp_status-status=0x%x "
"error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
vha->host_no, sp->handle, type, comp_status, fw_status[1], fw_status[2],
le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->total_byte_count)));
fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
}
else {
DEBUG2(qla_printk(KERN_WARNING, ha,
"scsi(%ld:0x%x): ELS-CT pass-through-%s error comp_status-status=0x%x "
"error subcode 1=0x%x error subcode 2=0x%x.\n",
vha->host_no, sp->handle, type, comp_status,
le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1),
le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2)));
bsg_job->reply->result = DID_ERROR << 16;
bsg_job->reply->reply_payload_rcv_len = 0;
fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
}
DEBUG2(qla2x00_dump_buffer((uint8_t *)pkt, sizeof(*pkt)));
}
else {
bsg_job->reply->result = DID_OK << 16;;
bsg_job->reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
bsg_job->reply_len = 0;
}
dma_unmap_sg(&ha->pdev->dev,
bsg_job->request_payload.sg_list,
bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
dma_unmap_sg(&ha->pdev->dev,
bsg_job->reply_payload.sg_list,
bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
if ((sp_bsg->ctx.type == SRB_ELS_CMD_HST) ||
(sp_bsg->ctx.type == SRB_CT_CMD))
kfree(sp->fcport);
kfree(sp->ctx);
mempool_free(sp, ha->srb_mempool);
bsg_job->job_done(bsg_job);
}
static void
qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
struct logio_entry_24xx *logio)
{
const char func[] = "LOGIO-IOCB";
const char *type;
struct qla_hw_data *ha = vha->hw;
fc_port_t *fcport;
srb_t *sp;
struct srb_logio *lio;
uint16_t data[2];
uint32_t iop[2];
sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
if (!sp)
return;
type = NULL;
lio = sp->ctx;
switch (lio->ctx.type) {
case SRB_LOGIN_CMD:
type = "login";
break;
case SRB_LOGOUT_CMD:
type = "logout";
break;
default:
qla_printk(KERN_WARNING, ha,
"%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
lio->ctx.type);
return;
}
del_timer(&lio->ctx.timer);
fcport = sp->fcport;
data[0] = data[1] = 0;
if (logio->entry_status) {
DEBUG2(printk(KERN_WARNING
"scsi(%ld:%x): Async-%s error entry - entry-status=%x.\n",
fcport->vha->host_no, sp->handle, type,
logio->entry_status));
DEBUG2(qla2x00_dump_buffer((uint8_t *)logio, sizeof(*logio)));
data[0] = MBS_COMMAND_ERROR;
data[1] = lio->flags & SRB_LOGIN_RETRIED ?
QLA_LOGIO_LOGIN_RETRIED: 0;
goto done_post_logio_done_work;
}
if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
DEBUG2(printk(KERN_DEBUG
"scsi(%ld:%x): Async-%s complete - iop0=%x.\n",
fcport->vha->host_no, sp->handle, type,
le32_to_cpu(logio->io_parameter[0])));
data[0] = MBS_COMMAND_COMPLETE;
if (lio->ctx.type == SRB_LOGOUT_CMD)
goto done_post_logio_done_work;
iop[0] = le32_to_cpu(logio->io_parameter[0]);
if (iop[0] & BIT_4) {
fcport->port_type = FCT_TARGET;
if (iop[0] & BIT_8)
fcport->flags |= FCF_FCP2_DEVICE;
}
if (iop[0] & BIT_5)
fcport->port_type = FCT_INITIATOR;
if (logio->io_parameter[7] || logio->io_parameter[8])
fcport->supported_classes |= FC_COS_CLASS2;
if (logio->io_parameter[9] || logio->io_parameter[10])
fcport->supported_classes |= FC_COS_CLASS3;
goto done_post_logio_done_work;
}
iop[0] = le32_to_cpu(logio->io_parameter[0]);
iop[1] = le32_to_cpu(logio->io_parameter[1]);
switch (iop[0]) {
case LSC_SCODE_PORTID_USED:
data[0] = MBS_PORT_ID_USED;
data[1] = LSW(iop[1]);
break;
case LSC_SCODE_NPORT_USED:
data[0] = MBS_LOOP_ID_USED;
break;
case LSC_SCODE_CMD_FAILED:
if ((iop[1] & 0xff) == 0x05) {
data[0] = MBS_NOT_LOGGED_IN;
break;
}
/* Fall through. */
default:
data[0] = MBS_COMMAND_ERROR;
data[1] = lio->flags & SRB_LOGIN_RETRIED ?
QLA_LOGIO_LOGIN_RETRIED: 0;
break;
}
DEBUG2(printk(KERN_WARNING
"scsi(%ld:%x): Async-%s failed - comp=%x iop0=%x iop1=%x.\n",
fcport->vha->host_no, sp->handle, type,
le16_to_cpu(logio->comp_status),
le32_to_cpu(logio->io_parameter[0]),
le32_to_cpu(logio->io_parameter[1])));
done_post_logio_done_work:
lio->ctx.type == SRB_LOGIN_CMD ?
qla2x00_post_async_login_done_work(fcport->vha, fcport, data):
qla2x00_post_async_logout_done_work(fcport->vha, fcport, data);
lio->ctx.free(sp);
}
/**
* qla2x00_process_response_queue() - Process response queue entries.
* @ha: SCSI driver HA context
*/
void
qla2x00_process_response_queue(struct rsp_que *rsp)
{
struct scsi_qla_host *vha;
struct qla_hw_data *ha = rsp->hw;
struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
sts_entry_t *pkt;
uint16_t handle_cnt;
uint16_t cnt;
vha = pci_get_drvdata(ha->pdev);
if (!vha->flags.online)
return;
while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
pkt = (sts_entry_t *)rsp->ring_ptr;
rsp->ring_index++;
if (rsp->ring_index == rsp->length) {
rsp->ring_index = 0;
rsp->ring_ptr = rsp->ring;
} else {
rsp->ring_ptr++;
}
if (pkt->entry_status != 0) {
DEBUG3(printk(KERN_INFO
"scsi(%ld): Process error entry.\n", vha->host_no));
qla2x00_error_entry(vha, rsp, pkt);
((response_t *)pkt)->signature = RESPONSE_PROCESSED;
wmb();
continue;
}
switch (pkt->entry_type) {
case STATUS_TYPE:
qla2x00_status_entry(vha, rsp, 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(vha, rsp->req,
((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(vha, rsp->req,
((sts22_entry_t *)pkt)->handle[cnt]);
}
break;
case STATUS_CONT_TYPE:
qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
break;
case MBX_IOCB_TYPE:
qla2x00_mbx_iocb_entry(vha, rsp->req,
(struct mbx_entry *)pkt);
default:
/* Type Not Supported. */
DEBUG4(printk(KERN_WARNING
"scsi(%ld): Received unknown response pkt type %x "
"entry status=%x.\n",
vha->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), rsp->ring_index);
}
static inline void
qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t sense_len,
struct rsp_que *rsp)
{
struct scsi_cmnd *cp = sp->cmd;
if (sense_len >= SCSI_SENSE_BUFFERSIZE)
sense_len = SCSI_SENSE_BUFFERSIZE;
sp->request_sense_length = sense_len;
sp->request_sense_ptr = cp->sense_buffer;
if (sp->request_sense_length > 32)
sense_len = 32;
memcpy(cp->sense_buffer, sense_data, sense_len);
sp->request_sense_ptr += sense_len;
sp->request_sense_length -= sense_len;
if (sp->request_sense_length != 0)
rsp->status_srb = sp;
DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
"cmd=%p pid=%ld\n", __func__, sp->fcport->vha->host_no,
cp->device->channel, cp->device->id, cp->device->lun, cp,
cp->serial_number));
if (sense_len)
DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, sense_len));
}
/**
* 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 *vha, struct rsp_que *rsp, void *pkt)
{
srb_t *sp;
fc_port_t *fcport;
struct scsi_cmnd *cp;
sts_entry_t *sts;
struct sts_entry_24xx *sts24;
uint16_t comp_status;
uint16_t scsi_status;
uint8_t lscsi_status;
int32_t resid;
uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len;
uint8_t *rsp_info, *sense_data;
struct qla_hw_data *ha = vha->hw;
uint32_t handle;
uint16_t que;
struct req_que *req;
sts = (sts_entry_t *) pkt;
sts24 = (struct sts_entry_24xx *) pkt;
if (IS_FWI2_CAPABLE(ha)) {
comp_status = le16_to_cpu(sts24->comp_status);
scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
} else {
comp_status = le16_to_cpu(sts->comp_status);
scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
}
handle = (uint32_t) LSW(sts->handle);
que = MSW(sts->handle);
req = ha->req_q_map[que];
/* Fast path completion. */
if (comp_status == CS_COMPLETE && scsi_status == 0) {
qla2x00_process_completed_request(vha, req, handle);
return;
}
/* Validate handle. */
if (handle < MAX_OUTSTANDING_COMMANDS) {
sp = req->outstanding_cmds[handle];
req->outstanding_cmds[handle] = NULL;
} else
sp = NULL;
if (sp == NULL) {
DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
vha->host_no));
qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
qla2xxx_wake_dpc(vha);
return;
}
cp = sp->cmd;
if (cp == NULL) {
DEBUG2(printk("scsi(%ld): Command already returned back to OS "
"pkt->handle=%d sp=%p.\n", vha->host_no, handle, sp));
qla_printk(KERN_WARNING, ha,
"Command is NULL: already returned to OS (sp=%p)\n", sp);
return;
}
lscsi_status = scsi_status & STATUS_MASK;
fcport = sp->fcport;
sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
if (IS_FWI2_CAPABLE(ha)) {
if (scsi_status & SS_SENSE_LEN_VALID)
sense_len = le32_to_cpu(sts24->sense_len);
if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
resid_len = le32_to_cpu(sts24->rsp_residual_count);
if (comp_status == CS_DATA_UNDERRUN)
fw_resid_len = le32_to_cpu(sts24->residual_len);
rsp_info = sts24->data;
sense_data = sts24->data;
host_to_fcp_swap(sts24->data, sizeof(sts24->data));
} else {
if (scsi_status & SS_SENSE_LEN_VALID)
sense_len = le16_to_cpu(sts->req_sense_length);
if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
rsp_info_len = le16_to_cpu(sts->rsp_info_len);
resid_len = le32_to_cpu(sts->residual_length);
rsp_info = sts->rsp_info;
sense_data = sts->req_sense_data;
}
/* Check for any FCP transport errors. */
if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
/* Sense data lies beyond any FCP RESPONSE data. */
if (IS_FWI2_CAPABLE(ha))
sense_data += rsp_info_len;
if (rsp_info_len > 3 && 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", vha->host_no,
cp->device->channel, cp->device->id,
cp->device->lun, rsp_info_len, rsp_info[0],
rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
rsp_info[5], rsp_info[6], rsp_info[7]));
cp->result = DID_BUS_BUSY << 16;
qla2x00_sp_compl(ha, sp);
return;
}
}
/* Check for overrun. */
if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
scsi_status & SS_RESIDUAL_OVER)
comp_status = CS_DATA_OVERRUN;
/*
* Based on Host and scsi status generate status code for Linux
*/
switch (comp_status) {
case CS_COMPLETE:
case CS_QUEUE_FULL:
if (scsi_status == 0) {
cp->result = DID_OK << 16;
break;
}
if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
resid = resid_len;
scsi_set_resid(cp, resid);
if (!lscsi_status &&
((unsigned)(scsi_bufflen(cp) - 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", vha->host_no,
cp->device->channel, cp->device->id,
cp->device->lun, resid,
scsi_bufflen(cp));
cp->result = DID_ERROR << 16;
break;
}
}
cp->result = DID_OK << 16 | lscsi_status;
if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
DEBUG2(printk(KERN_INFO
"scsi(%ld): QUEUE FULL status detected "
"0x%x-0x%x.\n", vha->host_no, comp_status,
scsi_status));
break;
}
if (lscsi_status != SS_CHECK_CONDITION)
break;
memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
if (!(scsi_status & SS_SENSE_LEN_VALID))
break;
qla2x00_handle_sense(sp, sense_data, sense_len, rsp);
break;
case CS_DATA_UNDERRUN:
DEBUG2(printk(KERN_INFO
"scsi(%ld:%d:%d) UNDERRUN status detected 0x%x-0x%x. "
"resid=0x%x fw_resid=0x%x cdb=0x%x os_underflow=0x%x\n",
vha->host_no, cp->device->id, cp->device->lun, comp_status,
scsi_status, resid_len, fw_resid_len, cp->cmnd[0],
cp->underflow));
/* Use F/W calculated residual length. */
resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
scsi_set_resid(cp, resid);
if (scsi_status & SS_RESIDUAL_UNDER) {
if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
DEBUG2(printk(
"scsi(%ld:%d:%d:%d) Dropped frame(s) "
"detected (%x of %x bytes)...residual "
"length mismatch...retrying command.\n",
vha->host_no, cp->device->channel,
cp->device->id, cp->device->lun, resid,
scsi_bufflen(cp)));
cp->result = DID_ERROR << 16 | lscsi_status;
break;
}
if (!lscsi_status &&
((unsigned)(scsi_bufflen(cp) - 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", vha->host_no,
cp->device->channel, cp->device->id,
cp->device->lun, resid, scsi_bufflen(cp));
cp->result = DID_ERROR << 16;
break;
}
} else if (!lscsi_status) {
DEBUG2(printk(
"scsi(%ld:%d:%d:%d) Dropped frame(s) detected "
"(%x of %x bytes)...firmware reported underrun..."
"retrying command.\n", vha->host_no,
cp->device->channel, cp->device->id,
cp->device->lun, resid, scsi_bufflen(cp)));
cp->result = DID_ERROR << 16;
break;
}
cp->result = DID_OK << 16 | lscsi_status;
/*
* Check to see if SCSI Status is non zero. If so report SCSI
* Status.
*/
if (lscsi_status != 0) {
if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
DEBUG2(printk(KERN_INFO
"scsi(%ld): QUEUE FULL status detected "
"0x%x-0x%x.\n", vha->host_no, comp_status,
scsi_status));
break;
}
if (lscsi_status != SS_CHECK_CONDITION)
break;
memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
if (!(scsi_status & SS_SENSE_LEN_VALID))
break;
qla2x00_handle_sense(sp, sense_data, sense_len, rsp);
}
break;
case CS_DATA_OVERRUN:
DEBUG2(printk(KERN_INFO
"scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
vha->host_no, cp->device->id, cp->device->lun, 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, scsi_bufflen(cp), resid_len));
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",
vha->host_no, cp->device->id, cp->device->lun,
cp->serial_number, comp_status,
atomic_read(&fcport->state)));
/*
* We are going to have the fc class block the rport
* while we try to recover so instruct the mid layer
* to requeue until the class decides how to handle this.
*/
cp->result = DID_TRANSPORT_DISRUPTED << 16;
if (atomic_read(&fcport->state) == FCS_ONLINE)
qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
break;
case CS_RESET:
DEBUG2(printk(KERN_INFO
"scsi(%ld): RESET status detected 0x%x-0x%x.\n",
vha->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",
vha->host_no, comp_status, scsi_status));
cp->result = DID_RESET << 16;
break;
case CS_TIMEOUT:
/*
* We are going to have the fc class block the rport
* while we try to recover so instruct the mid layer
* to requeue until the class decides how to handle this.
*/
cp->result = DID_TRANSPORT_DISRUPTED << 16;
if (IS_FWI2_CAPABLE(ha)) {
DEBUG2(printk(KERN_INFO
"scsi(%ld:%d:%d:%d): TIMEOUT status detected "
"0x%x-0x%x\n", vha->host_no, cp->device->channel,
cp->device->id, cp->device->lun, comp_status,
scsi_status));
break;
}
DEBUG2(printk(KERN_INFO
"scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
"sflags=%x.\n", vha->host_no, cp->device->channel,
cp->device->id, cp->device->lun, comp_status, scsi_status,
le16_to_cpu(sts->status_flags)));
/* Check to see if logout occurred. */
if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
break;
default:
DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
"0x%x-0x%x.\n", vha->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 (rsp->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(struct rsp_que *rsp, sts_cont_entry_t *pkt)
{
uint8_t sense_sz = 0;
struct qla_hw_data *ha = rsp->hw;
srb_t *sp = rsp->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.\n", __func__, sp));
qla_printk(KERN_INFO, ha,
"cmd is NULL: already returned to OS (sp=%p)\n",
sp);
rsp->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. */
if (IS_FWI2_CAPABLE(ha))
host_to_fcp_swap(pkt->data, sizeof(pkt->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) {
rsp->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 *vha, struct rsp_que *rsp, sts_entry_t *pkt)
{
srb_t *sp;
struct qla_hw_data *ha = vha->hw;
uint32_t handle = LSW(pkt->handle);
uint16_t que = MSW(pkt->handle);
struct req_que *req = ha->req_q_map[que];
#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 (handle < MAX_OUTSTANDING_COMMANDS)
sp = req->outstanding_cmds[handle];
else
sp = NULL;
if (sp) {
/* Free outstanding command slot. */
req->outstanding_cmds[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 || pkt->entry_type == COMMAND_TYPE_7) {
DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
vha->host_no));
qla_printk(KERN_WARNING, ha,
"Error entry - invalid handle\n");
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
qla2xxx_wake_dpc(vha);
}
}
/**
* qla24xx_mbx_completion() - Process mailbox command completions.
* @ha: SCSI driver HA context
* @mb0: Mailbox0 register
*/
static void
qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
{
uint16_t cnt;
uint16_t __iomem *wptr;
struct qla_hw_data *ha = vha->hw;
struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
/* Load return mailbox registers. */
ha->flags.mbox_int = 1;
ha->mailbox_out[0] = mb0;
wptr = (uint16_t __iomem *)&reg->mailbox1;
for (cnt = 1; cnt < ha->mbx_count; cnt++) {
ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
wptr++;
}
if (ha->mcp) {
DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
__func__, vha->host_no, ha->mcp->mb[0]));
} else {
DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
__func__, vha->host_no));
}
}
/**
* qla24xx_process_response_queue() - Process response queue entries.
* @ha: SCSI driver HA context
*/
void qla24xx_process_response_queue(struct scsi_qla_host *vha,
struct rsp_que *rsp)
{
struct sts_entry_24xx *pkt;
if (!vha->flags.online)
return;
while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
rsp->ring_index++;
if (rsp->ring_index == rsp->length) {
rsp->ring_index = 0;
rsp->ring_ptr = rsp->ring;
} else {
rsp->ring_ptr++;
}
if (pkt->entry_status != 0) {
DEBUG3(printk(KERN_INFO
"scsi(%ld): Process error entry.\n", vha->host_no));
qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
((response_t *)pkt)->signature = RESPONSE_PROCESSED;
wmb();
continue;
}
switch (pkt->entry_type) {
case STATUS_TYPE:
qla2x00_status_entry(vha, rsp, pkt);
break;
case STATUS_CONT_TYPE:
qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
break;
case VP_RPT_ID_IOCB_TYPE:
qla24xx_report_id_acquisition(vha,
(struct vp_rpt_id_entry_24xx *)pkt);
break;
case LOGINOUT_PORT_IOCB_TYPE:
qla24xx_logio_entry(vha, rsp->req,
(struct logio_entry_24xx *)pkt);
break;
case CT_IOCB_TYPE:
qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
clear_bit(MBX_INTERRUPT, &vha->hw->mbx_cmd_flags);
break;
case ELS_IOCB_TYPE:
qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
break;
default:
/* Type Not Supported. */
DEBUG4(printk(KERN_WARNING
"scsi(%ld): Received unknown response pkt type %x "
"entry status=%x.\n",
vha->host_no, pkt->entry_type, pkt->entry_status));
break;
}
((response_t *)pkt)->signature = RESPONSE_PROCESSED;
wmb();
}
/* Adjust ring index */
WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
}
static void
qla2xxx_check_risc_status(scsi_qla_host_t *vha)
{
int rval;
uint32_t cnt;
struct qla_hw_data *ha = vha->hw;
struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha))
return;
rval = QLA_SUCCESS;
WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
RD_REG_DWORD(&reg->iobase_addr);
WRT_REG_DWORD(&reg->iobase_window, 0x0001);
for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
rval == QLA_SUCCESS; cnt--) {
if (cnt) {
WRT_REG_DWORD(&reg->iobase_window, 0x0001);
udelay(10);
} else
rval = QLA_FUNCTION_TIMEOUT;
}
if (rval == QLA_SUCCESS)
goto next_test;
WRT_REG_DWORD(&reg->iobase_window, 0x0003);
for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
rval == QLA_SUCCESS; cnt--) {
if (cnt) {
WRT_REG_DWORD(&reg->iobase_window, 0x0003);
udelay(10);
} else
rval = QLA_FUNCTION_TIMEOUT;
}
if (rval != QLA_SUCCESS)
goto done;
next_test:
if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");
done:
WRT_REG_DWORD(&reg->iobase_window, 0x0000);
RD_REG_DWORD(&reg->iobase_window);
}
/**
* qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
* @irq:
* @dev_id: SCSI driver HA context
*
* Called by system whenever the host adapter generates an interrupt.
*
* Returns handled flag.
*/
irqreturn_t
qla24xx_intr_handler(int irq, void *dev_id)
{
scsi_qla_host_t *vha;
struct qla_hw_data *ha;
struct device_reg_24xx __iomem *reg;
int status;
unsigned long iter;
uint32_t stat;
uint32_t hccr;
uint16_t mb[4];
struct rsp_que *rsp;
unsigned long flags;
rsp = (struct rsp_que *) dev_id;
if (!rsp) {
printk(KERN_INFO
"%s(): NULL response queue pointer\n", __func__);
return IRQ_NONE;
}
ha = rsp->hw;
reg = &ha->iobase->isp24;
status = 0;
if (unlikely(pci_channel_offline(ha->pdev)))
return IRQ_HANDLED;
spin_lock_irqsave(&ha->hardware_lock, flags);
vha = pci_get_drvdata(ha->pdev);
for (iter = 50; iter--; ) {
stat = RD_REG_DWORD(&reg->host_status);
if (stat & HSRX_RISC_PAUSED) {
if (unlikely(pci_channel_offline(ha->pdev)))
break;
hccr = RD_REG_DWORD(&reg->hccr);
qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
"Dumping firmware!\n", hccr);
qla2xxx_check_risc_status(vha);
ha->isp_ops->fw_dump(vha, 1);
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
break;
} else if ((stat & HSRX_RISC_INT) == 0)
break;
switch (stat & 0xff) {
case 0x1:
case 0x2:
case 0x10:
case 0x11:
qla24xx_mbx_completion(vha, MSW(stat));
status |= MBX_INTERRUPT;
break;
case 0x12:
mb[0] = MSW(stat);
mb[1] = RD_REG_WORD(&reg->mailbox1);
mb[2] = RD_REG_WORD(&reg->mailbox2);
mb[3] = RD_REG_WORD(&reg->mailbox3);
qla2x00_async_event(vha, rsp, mb);
break;
case 0x13:
case 0x14:
qla24xx_process_response_queue(vha, rsp);
break;
default:
DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
"(%d).\n",
vha->host_no, stat & 0xff));
break;
}
WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
RD_REG_DWORD_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) {
set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
complete(&ha->mbx_intr_comp);
}
return IRQ_HANDLED;
}
static irqreturn_t
qla24xx_msix_rsp_q(int irq, void *dev_id)
{
struct qla_hw_data *ha;
struct rsp_que *rsp;
struct device_reg_24xx __iomem *reg;
struct scsi_qla_host *vha;
unsigned long flags;
rsp = (struct rsp_que *) dev_id;
if (!rsp) {
printk(KERN_INFO
"%s(): NULL response queue pointer\n", __func__);
return IRQ_NONE;
}
ha = rsp->hw;
reg = &ha->iobase->isp24;
spin_lock_irqsave(&ha->hardware_lock, flags);
vha = pci_get_drvdata(ha->pdev);
qla24xx_process_response_queue(vha, rsp);
if (!ha->flags.disable_msix_handshake) {
WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
RD_REG_DWORD_RELAXED(&reg->hccr);
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return IRQ_HANDLED;
}
static irqreturn_t
qla25xx_msix_rsp_q(int irq, void *dev_id)
{
struct qla_hw_data *ha;
struct rsp_que *rsp;
struct device_reg_24xx __iomem *reg;
unsigned long flags;
rsp = (struct rsp_que *) dev_id;
if (!rsp) {
printk(KERN_INFO
"%s(): NULL response queue pointer\n", __func__);
return IRQ_NONE;
}
ha = rsp->hw;
/* Clear the interrupt, if enabled, for this response queue */
if (rsp->options & ~BIT_6) {
reg = &ha->iobase->isp24;
spin_lock_irqsave(&ha->hardware_lock, flags);
WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
RD_REG_DWORD_RELAXED(&reg->hccr);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);
return IRQ_HANDLED;
}
static irqreturn_t
qla24xx_msix_default(int irq, void *dev_id)
{
scsi_qla_host_t *vha;
struct qla_hw_data *ha;
struct rsp_que *rsp;
struct device_reg_24xx __iomem *reg;
int status;
uint32_t stat;
uint32_t hccr;
uint16_t mb[4];
unsigned long flags;
rsp = (struct rsp_que *) dev_id;
if (!rsp) {
DEBUG(printk(
"%s(): NULL response queue pointer\n", __func__));
return IRQ_NONE;
}
ha = rsp->hw;
reg = &ha->iobase->isp24;
status = 0;
spin_lock_irqsave(&ha->hardware_lock, flags);
vha = pci_get_drvdata(ha->pdev);
do {
stat = RD_REG_DWORD(&reg->host_status);
if (stat & HSRX_RISC_PAUSED) {
if (unlikely(pci_channel_offline(ha->pdev)))
break;
hccr = RD_REG_DWORD(&reg->hccr);
qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
"Dumping firmware!\n", hccr);
qla2xxx_check_risc_status(vha);
ha->isp_ops->fw_dump(vha, 1);
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
break;
} else if ((stat & HSRX_RISC_INT) == 0)
break;
switch (stat & 0xff) {
case 0x1:
case 0x2:
case 0x10:
case 0x11:
qla24xx_mbx_completion(vha, MSW(stat));
status |= MBX_INTERRUPT;
break;
case 0x12:
mb[0] = MSW(stat);
mb[1] = RD_REG_WORD(&reg->mailbox1);
mb[2] = RD_REG_WORD(&reg->mailbox2);
mb[3] = RD_REG_WORD(&reg->mailbox3);
qla2x00_async_event(vha, rsp, mb);
break;
case 0x13:
case 0x14:
qla24xx_process_response_queue(vha, rsp);
break;
default:
DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
"(%d).\n",
vha->host_no, stat & 0xff));
break;
}
WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
} while (0);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
(status & MBX_INTERRUPT) && ha->flags.mbox_int) {
set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
complete(&ha->mbx_intr_comp);
}
return IRQ_HANDLED;
}
/* Interrupt handling helpers. */
struct qla_init_msix_entry {
const char *name;
irq_handler_t handler;
};
static struct qla_init_msix_entry msix_entries[3] = {
{ "qla2xxx (default)", qla24xx_msix_default },
{ "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
{ "qla2xxx (multiq)", qla25xx_msix_rsp_q },
};
static void
qla24xx_disable_msix(struct qla_hw_data *ha)
{
int i;
struct qla_msix_entry *qentry;
for (i = 0; i < ha->msix_count; i++) {
qentry = &ha->msix_entries[i];
if (qentry->have_irq)
free_irq(qentry->vector, qentry->rsp);
}
pci_disable_msix(ha->pdev);
kfree(ha->msix_entries);
ha->msix_entries = NULL;
ha->flags.msix_enabled = 0;
}
static int
qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
{
#define MIN_MSIX_COUNT 2
int i, ret;
struct msix_entry *entries;
struct qla_msix_entry *qentry;
entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
GFP_KERNEL);
if (!entries)
return -ENOMEM;
for (i = 0; i < ha->msix_count; i++)
entries[i].entry = i;
ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
if (ret) {
if (ret < MIN_MSIX_COUNT)
goto msix_failed;
qla_printk(KERN_WARNING, ha,
"MSI-X: Failed to enable support -- %d/%d\n"
" Retry with %d vectors\n", ha->msix_count, ret, ret);
ha->msix_count = ret;
ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
if (ret) {
msix_failed:
qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
" support, giving up -- %d/%d\n",
ha->msix_count, ret);
goto msix_out;
}
ha->max_rsp_queues = ha->msix_count - 1;
}
ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
ha->msix_count, GFP_KERNEL);
if (!ha->msix_entries) {
ret = -ENOMEM;
goto msix_out;
}
ha->flags.msix_enabled = 1;
for (i = 0; i < ha->msix_count; i++) {
qentry = &ha->msix_entries[i];
qentry->vector = entries[i].vector;
qentry->entry = entries[i].entry;
qentry->have_irq = 0;
qentry->rsp = NULL;
}
/* Enable MSI-X vectors for the base queue */
for (i = 0; i < 2; i++) {
qentry = &ha->msix_entries[i];
ret = request_irq(qentry->vector, msix_entries[i].handler,
0, msix_entries[i].name, rsp);
if (ret) {
qla_printk(KERN_WARNING, ha,
"MSI-X: Unable to register handler -- %x/%d.\n",
qentry->vector, ret);
qla24xx_disable_msix(ha);
ha->mqenable = 0;
goto msix_out;
}
qentry->have_irq = 1;
qentry->rsp = rsp;
rsp->msix = qentry;
}
/* Enable MSI-X vector for response queue update for queue 0 */
if (ha->mqiobase && (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
ha->mqenable = 1;
msix_out:
kfree(entries);
return ret;
}
int
qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
{
int ret;
device_reg_t __iomem *reg = ha->iobase;
/* If possible, enable MSI-X. */
if (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
!IS_QLA8432(ha) && !IS_QLA8001(ha))
goto skip_msix;
if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX ||
!QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
DEBUG2(qla_printk(KERN_WARNING, ha,
"MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
ha->pdev->revision, ha->fw_attributes));
goto skip_msix;
}
if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
(ha->pdev->subsystem_device == 0x7040 ||
ha->pdev->subsystem_device == 0x7041 ||
ha->pdev->subsystem_device == 0x1705)) {
DEBUG2(qla_printk(KERN_WARNING, ha,
"MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X, 0x%X).\n",
ha->pdev->subsystem_vendor,
ha->pdev->subsystem_device));
goto skip_msi;
}
ret = qla24xx_enable_msix(ha, rsp);
if (!ret) {
DEBUG2(qla_printk(KERN_INFO, ha,
"MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
ha->fw_attributes));
goto clear_risc_ints;
}
qla_printk(KERN_WARNING, ha,
"MSI-X: Falling back-to INTa mode -- %d.\n", ret);
skip_msix:
if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
!IS_QLA8001(ha))
goto skip_msi;
ret = pci_enable_msi(ha->pdev);
if (!ret) {
DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
ha->flags.msi_enabled = 1;
}
skip_msi:
ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
IRQF_SHARED, QLA2XXX_DRIVER_NAME, rsp);
if (ret) {
qla_printk(KERN_WARNING, ha,
"Failed to reserve interrupt %d already in use.\n",
ha->pdev->irq);
goto fail;
}
ha->flags.inta_enabled = 1;
clear_risc_ints:
/*
* FIXME: Noted that 8014s were being dropped during NK testing.
* Timing deltas during MSI-X/INTa transitions?
*/
if (IS_QLA81XX(ha))
goto fail;
spin_lock_irq(&ha->hardware_lock);
if (IS_FWI2_CAPABLE(ha)) {
WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
} else {
WRT_REG_WORD(&reg->isp.semaphore, 0);
WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
}
spin_unlock_irq(&ha->hardware_lock);
fail:
return ret;
}
void
qla2x00_free_irqs(scsi_qla_host_t *vha)
{
struct qla_hw_data *ha = vha->hw;
struct rsp_que *rsp = ha->rsp_q_map[0];
if (ha->flags.msix_enabled)
qla24xx_disable_msix(ha);
else if (ha->flags.msi_enabled) {
free_irq(ha->pdev->irq, rsp);
pci_disable_msi(ha->pdev);
} else
free_irq(ha->pdev->irq, rsp);
}
int qla25xx_request_irq(struct rsp_que *rsp)
{
struct qla_hw_data *ha = rsp->hw;
struct qla_init_msix_entry *intr = &msix_entries[2];
struct qla_msix_entry *msix = rsp->msix;
int ret;
ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
if (ret) {
qla_printk(KERN_WARNING, ha,
"MSI-X: Unable to register handler -- %x/%d.\n",
msix->vector, ret);
return ret;
}
msix->have_irq = 1;
msix->rsp = rsp;
return ret;
}
Reference in a new issue View git blame Copy permalink