[SCSI] qla2xxx: Query additional RISC information during a pause.

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Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=05236a050f8e3a20962bad98ad8ceb94bbdb748c
Commit:     05236a050f8e3a20962bad98ad8ceb94bbdb748c
Parent:     14e660e677ddd3574247495aae4ef63eb8899072
Author:     Andrew Vasquez <[EMAIL PROTECTED]>
AuthorDate: Thu Sep 20 14:07:37 2007 -0700
Committer:  James Bottomley <[EMAIL PROTECTED]>
CommitDate: Fri Oct 12 14:49:51 2007 -0400

    [SCSI] qla2xxx: Query additional RISC information during a pause.
    
    Signed-off-by: Andrew Vasquez <[EMAIL PROTECTED]>
    Signed-off-by: James Bottomley <[EMAIL PROTECTED]>
---
 drivers/scsi/qla2xxx/qla_fw.h  |    4 ++-
 drivers/scsi/qla2xxx/qla_isr.c |   53 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+), 1 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_fw.h b/drivers/scsi/qla2xxx/qla_fw.h
index d5344d7..db63386 100644
--- a/drivers/scsi/qla2xxx/qla_fw.h
+++ b/drivers/scsi/qla2xxx/qla_fw.h
@@ -942,7 +942,9 @@ struct device_reg_24xx {
        uint16_t mailbox31;
 
        uint32_t iobase_window;
-       uint32_t unused_4[8];           /* Gap. */
+       uint32_t unused_4;              /* Gap. */
+       uint32_t iobase_c8;
+       uint32_t unused_4_1[6];         /* Gap. */
        uint32_t iobase_q;
        uint32_t unused_5[2];           /* Gap. */
        uint32_t iobase_select;
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index dcfb24b..f61c2fe 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -6,6 +6,7 @@
  */
 #include "qla_def.h"
 
+#include <linux/delay.h>
 #include <scsi/scsi_tcq.h>
 
 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
@@ -1484,6 +1485,52 @@ qla24xx_process_response_queue(struct scsi_qla_host *ha)
        WRT_REG_DWORD(&reg->rsp_q_out, ha->rsp_ring_index);
 }
 
+static void
+qla2xxx_check_risc_status(scsi_qla_host_t *ha)
+{
+       int rval;
+       uint32_t cnt;
+       struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
+
+       if (!IS_QLA25XX(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:
@@ -1526,6 +1573,9 @@ qla24xx_intr_handler(int irq, void *dev_id)
 
                        qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
                            "Dumping firmware!\n", hccr);
+
+                       qla2xxx_check_risc_status(ha);
+
                        ha->isp_ops->fw_dump(ha, 1);
                        set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
                        break;
@@ -1663,6 +1713,9 @@ qla24xx_msix_default(int irq, void *dev_id)
 
                        qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
                            "Dumping firmware!\n", hccr);
+
+                       qla2xxx_check_risc_status(ha);
+
                        ha->isp_ops->fw_dump(ha, 1);
                        set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
                        break;
-
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