[SCSI] qla2xxx: Remove support for reading/writing HW-event-log.

Software should not touch this region of flash, as the firmware
will be the only writer and consumer of the region.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

7 files changed, 2 insertions, 186 deletions

diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index a29c95204975..fc50221d1a99 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -2136,7 +2136,6 @@ struct qla_msix_entry {
 /* Work events.  */
 enum qla_work_type {
         QLA_EVT_AEN,
-        QLA_EVT_HWE_LOG,
 };
 
 
@@ -2151,10 +2150,6 @@ struct qla_work_evt {
                         enum fc_host_event_code code;
                         u32 data;
                 } aen;
-                struct {
-                        uint16_t code;
-                        uint16_t d1, d2, d3;
-                } hwe;
         } u;
 };
 
@@ -2489,10 +2484,6 @@ struct qla_hw_data {
         uint64_t        fce_wr, fce_rd;
         struct mutex    fce_mutex;
 
-        uint32_t        hw_event_start;
-        uint32_t        hw_event_ptr;
-        uint32_t        hw_event_pause_errors;
-
         uint32_t        pci_attr;
         uint16_t        chip_revision;
 
@@ -2533,7 +2524,6 @@ struct qla_hw_data {
         uint32_t        flt_region_boot;
         uint32_t        flt_region_fw;
         uint32_t        flt_region_vpd_nvram;
-        uint32_t        flt_region_hw_event;
         uint32_t        flt_region_npiv_conf;
 
         /* Needed for BEACON */
diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h
index 0011e31205db..450a05c5d33b 100644
--- a/drivers/scsi/qla2xxx/qla_gbl.h
+++ b/drivers/scsi/qla2xxx/qla_gbl.h
@@ -69,8 +69,6 @@ extern int qla2x00_loop_reset(scsi_qla_host_t *);
 extern void qla2x00_abort_all_cmds(scsi_qla_host_t *, int);
 extern int qla2x00_post_aen_work(struct scsi_qla_host *, enum
     fc_host_event_code, u32);
-extern int qla2x00_post_hwe_work(struct scsi_qla_host *, uint16_t , uint16_t,
-    uint16_t, uint16_t);
 
 extern void qla2x00_abort_fcport_cmds(fc_port_t *);
 extern struct scsi_qla_host *qla2x00_create_host(struct scsi_host_template *,
@@ -317,9 +315,6 @@ extern uint8_t *qla25xx_read_optrom_data(struct scsi_qla_host *, uint8_t *,
 extern int qla2x00_get_flash_version(scsi_qla_host_t *, void *);
 extern int qla24xx_get_flash_version(scsi_qla_host_t *, void *);
 
-extern int qla2xxx_hw_event_log(scsi_qla_host_t *, uint16_t , uint16_t,
-    uint16_t, uint16_t);
-
 extern int qla2xxx_get_flash_info(scsi_qla_host_t *);
 extern int qla2xxx_get_vpd_field(scsi_qla_host_t *, char *, char *, size_t);
 
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 52ed56ecf195..521d2158d7a9 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -552,10 +552,6 @@ qla24xx_reset_risc(scsi_qla_host_t *vha)
                 d2 = RD_REG_DWORD(&reg->ctrl_status);
                 barrier();
         }
-        if (cnt == 0 || hw_evt)
-                qla2xxx_hw_event_log(vha, HW_EVENT_RESET_ERR,
-                    RD_REG_WORD(&reg->mailbox1), RD_REG_WORD(&reg->mailbox2),
-                    RD_REG_WORD(&reg->mailbox3));
 
         WRT_REG_DWORD(&reg->hccr, HCCRX_SET_RISC_RESET);
         RD_REG_DWORD(&reg->hccr);
@@ -1665,10 +1661,6 @@ qla2x00_nvram_config(scsi_qla_host_t *vha)
                 qla_printk(KERN_WARNING, ha, "Falling back to functioning (yet "
                     "invalid -- WWPN) defaults.\n");
 
-                if (chksum)
-                        qla2xxx_hw_event_log(vha, HW_EVENT_NVRAM_CHKSUM_ERR, 0,
-                            MSW(chksum), LSW(chksum));
-
                 /*
                  * Set default initialization control block.
                  */
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index d5fb79a88001..6447eb13db8c 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -362,7 +362,6 @@ qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
                     "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
                     mb[1], mb[2], mb[3]);
 
-                qla2x00_post_hwe_work(vha, mb[0], mb[1], mb[2], mb[3]);
                 ha->isp_ops->fw_dump(vha, 1);
 
                 if (IS_FWI2_CAPABLE(ha)) {
@@ -387,7 +386,6 @@ qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
                     vha->host_no));
                 qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n");
 
-                qla2x00_post_hwe_work(vha, mb[0], mb[1], mb[2], mb[3]);
                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                 break;
 
@@ -396,7 +394,6 @@ qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
                     vha->host_no));
                 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
 
-                qla2x00_post_hwe_work(vha, mb[0], mb[1], mb[2], mb[3]);
                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                 break;
 
@@ -1590,12 +1587,6 @@ qla24xx_intr_handler(int irq, void *dev_id)
                         if (pci_channel_offline(ha->pdev))
                                 break;
 
-                        if (ha->hw_event_pause_errors == 0)
-                                qla2x00_post_hwe_work(vha, HW_EVENT_PARITY_ERR,
-                                    0, MSW(stat), LSW(stat));
-                        else if (ha->hw_event_pause_errors < 0xffffffff)
-                                ha->hw_event_pause_errors++;
-
                         hccr = RD_REG_DWORD(&reg->hccr);
 
                         qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
@@ -1740,12 +1731,6 @@ qla24xx_msix_default(int irq, void *dev_id)
                         if (pci_channel_offline(ha->pdev))
                                 break;
 
-                        if (ha->hw_event_pause_errors == 0)
-                                qla2x00_post_hwe_work(vha, HW_EVENT_PARITY_ERR,
-                                    0, MSW(stat), LSW(stat));
-                        else if (ha->hw_event_pause_errors < 0xffffffff)
-                                ha->hw_event_pause_errors++;
-
                         hccr = RD_REG_DWORD(&reg->hccr);
 
                         qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index a99976f5fabd..f03de8c79681 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -568,7 +568,6 @@ int
 qla2x00_mbx_reg_test(scsi_qla_host_t *vha)
 {
         int rval;
-        struct qla_hw_data *ha = vha->hw;
         mbx_cmd_t mc;
         mbx_cmd_t *mcp = &mc;
 
@@ -595,14 +594,6 @@ qla2x00_mbx_reg_test(scsi_qla_host_t *vha)
                 if (mcp->mb[5] != 0xA5A5 || mcp->mb[6] != 0x5A5A ||
                     mcp->mb[7] != 0x2525)
                         rval = QLA_FUNCTION_FAILED;
-                if (rval == QLA_FUNCTION_FAILED) {
-                        struct device_reg_24xx __iomem *reg =
-                            &ha->iobase->isp24;
-
-                        qla2xxx_hw_event_log(vha, HW_EVENT_ISP_ERR, 0,
-                            LSW(RD_REG_DWORD(&reg->hccr)),
-                            LSW(RD_REG_DWORD(&reg->istatus)));
-                }
         }
 
         if (rval != QLA_SUCCESS) {
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 8ea927788b3f..3b1b68c1f6f2 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -2458,23 +2458,6 @@ qla2x00_post_aen_work(struct scsi_qla_host *vha, enum fc_host_event_code code,
         return qla2x00_post_work(vha, e, 1);
 }
 
-int
-qla2x00_post_hwe_work(struct scsi_qla_host *vha, uint16_t code, uint16_t d1,
-    uint16_t d2, uint16_t d3)
-{
-        struct qla_work_evt *e;
-
-        e = qla2x00_alloc_work(vha, QLA_EVT_HWE_LOG, 1);
-        if (!e)
-                return QLA_FUNCTION_FAILED;
-
-        e->u.hwe.code = code;
-        e->u.hwe.d1 = d1;
-        e->u.hwe.d2 = d2;
-        e->u.hwe.d3 = d3;
-        return qla2x00_post_work(vha, e, 1);
-}
-
 static void
 qla2x00_do_work(struct scsi_qla_host *vha)
 {
@@ -2492,10 +2475,6 @@ qla2x00_do_work(struct scsi_qla_host *vha)
                         fc_host_post_event(vha->host, fc_get_event_number(),
                             e->u.aen.code, e->u.aen.data);
                         break;
-                case QLA_EVT_HWE_LOG:
-                        qla2xxx_hw_event_log(vha, e->u.hwe.code, e->u.hwe.d1,
-                            e->u.hwe.d2, e->u.hwe.d3);
-                        break;
                 }
                 if (e->flags & QLA_EVT_FLAG_FREE)
                         kfree(e);
diff --git a/drivers/scsi/qla2xxx/qla_sup.c b/drivers/scsi/qla2xxx/qla_sup.c
index c538ee1b1a31..628d79c09733 100644
--- a/drivers/scsi/qla2xxx/qla_sup.c
+++ b/drivers/scsi/qla2xxx/qla_sup.c
@@ -676,14 +676,6 @@ qla2xxx_get_flt_info(scsi_qla_host_t *vha, uint32_t flt_addr)
                 case FLT_REG_FDT:
                         ha->flt_region_fdt = start;
                         break;
-                case FLT_REG_HW_EVENT_0:
-                        if (!PCI_FUNC(ha->pdev->devfn))
-                                ha->flt_region_hw_event = start;
-                        break;
-                case FLT_REG_HW_EVENT_1:
-                        if (PCI_FUNC(ha->pdev->devfn))
-                                ha->flt_region_hw_event = start;
-                        break;
                 case FLT_REG_NPIV_CONF_0:
                         if (!PCI_FUNC(ha->pdev->devfn))
                                 ha->flt_region_npiv_conf = start;
@@ -704,17 +696,14 @@ no_flash_data:
         ha->flt_region_vpd_nvram = FA_VPD_NVRAM_ADDR;
         ha->flt_region_fdt = IS_QLA24XX_TYPE(ha) ? FA_FLASH_DESCR_ADDR_24:
             FA_FLASH_DESCR_ADDR;
-        ha->flt_region_hw_event = !PCI_FUNC(ha->pdev->devfn) ?
-            FA_HW_EVENT0_ADDR: FA_HW_EVENT1_ADDR;
         ha->flt_region_npiv_conf = !PCI_FUNC(ha->pdev->devfn) ?
             (IS_QLA24XX_TYPE(ha) ? FA_NPIV_CONF0_ADDR_24: FA_NPIV_CONF0_ADDR):
             (IS_QLA24XX_TYPE(ha) ? FA_NPIV_CONF1_ADDR_24: FA_NPIV_CONF1_ADDR);
 done:
         DEBUG2(qla_printk(KERN_DEBUG, ha, "FLT[%s]: boot=0x%x fw=0x%x "
-            "vpd_nvram=0x%x fdt=0x%x flt=0x%x hwe=0x%x npiv=0x%x.\n", loc,
+            "vpd_nvram=0x%x fdt=0x%x flt=0x%x npiv=0x%x.\n", loc,
             ha->flt_region_boot, ha->flt_region_fw, ha->flt_region_vpd_nvram,
-            ha->flt_region_fdt, ha->flt_region_flt, ha->flt_region_hw_event,
-            ha->flt_region_npiv_conf));
+            ha->flt_region_fdt, ha->flt_region_flt, ha->flt_region_npiv_conf));
 }
 
 static void
@@ -2648,108 +2637,3 @@ qla2xxx_get_vpd_field(scsi_qla_host_t *vha, char *key, char *str, size_t size)
 
         return 0;
 }
-
-static int
-qla2xxx_hw_event_store(scsi_qla_host_t *vha, uint32_t *fdata)
-{
-        uint32_t d[2], faddr;
-        struct qla_hw_data *ha = vha->hw;
-
-        /* Locate first empty entry. */
-        for (;;) {
-                if (ha->hw_event_ptr >=
-                    ha->flt_region_hw_event + FA_HW_EVENT_SIZE) {
-                        DEBUG2(qla_printk(KERN_WARNING, ha,
-                            "HW event -- Log Full!\n"));
-                        return QLA_MEMORY_ALLOC_FAILED;
-                }
-
-                qla24xx_read_flash_data(vha, d, ha->hw_event_ptr, 2);
-                faddr = flash_data_to_access_addr(ha->hw_event_ptr);
-                ha->hw_event_ptr += FA_HW_EVENT_ENTRY_SIZE;
-                if (d[0] == __constant_cpu_to_le32(0xffffffff) &&
-                    d[1] == __constant_cpu_to_le32(0xffffffff)) {
-                        qla24xx_unprotect_flash(ha);
-
-                        qla24xx_write_flash_dword(ha, faddr++,
-                            cpu_to_le32(jiffies));
-                        qla24xx_write_flash_dword(ha, faddr++, 0);
-                        qla24xx_write_flash_dword(ha, faddr++, *fdata++);
-                        qla24xx_write_flash_dword(ha, faddr++, *fdata);
-
-                        qla24xx_protect_flash(ha);
-                        break;
-                }
-        }
-        return QLA_SUCCESS;
-}
-
-int
-qla2xxx_hw_event_log(scsi_qla_host_t *vha, uint16_t code, uint16_t d1,
-    uint16_t d2, uint16_t d3)
-{
-#define QMARK(a, b, c, d) \
-    cpu_to_le32(LSB(a) << 24 | LSB(b) << 16 | LSB(c) << 8 | LSB(d))
-        struct qla_hw_data *ha = vha->hw;
-        int rval;
-        uint32_t marker[2], fdata[4];
-
-        if (ha->flt_region_hw_event == 0)
-                return QLA_FUNCTION_FAILED;
-
-        DEBUG2(qla_printk(KERN_WARNING, ha,
-            "HW event -- code=%x, d1=%x, d2=%x, d3=%x.\n", code, d1, d2, d3));
-
-        /* If marker not already found, locate or write.  */
-        if (!ha->flags.hw_event_marker_found) {
-                /* Create marker. */
-                marker[0] = QMARK('L', ha->fw_major_version,
-                    ha->fw_minor_version, ha->fw_subminor_version);
-                marker[1] = QMARK(QLA_DRIVER_MAJOR_VER, QLA_DRIVER_MINOR_VER,
-                    QLA_DRIVER_PATCH_VER, QLA_DRIVER_BETA_VER);
-
-                /* Locate marker. */
-                ha->hw_event_ptr = ha->flt_region_hw_event;
-                for (;;) {
-                        qla24xx_read_flash_data(vha, fdata, ha->hw_event_ptr,
-                            4);
-                        if (fdata[0] == __constant_cpu_to_le32(0xffffffff) &&
-                            fdata[1] == __constant_cpu_to_le32(0xffffffff))
-                                break;
-                        ha->hw_event_ptr += FA_HW_EVENT_ENTRY_SIZE;
-                        if (ha->hw_event_ptr >=
-                            ha->flt_region_hw_event + FA_HW_EVENT_SIZE) {
-                                DEBUG2(qla_printk(KERN_WARNING, ha,
-                                    "HW event -- Log Full!\n"));
-                                return QLA_MEMORY_ALLOC_FAILED;
-                        }
-                        if (fdata[2] == marker[0] && fdata[3] == marker[1]) {
-                                ha->flags.hw_event_marker_found = 1;
-                                break;
-                        }
-                }
-                /* No marker, write it. */
-                if (!ha->flags.hw_event_marker_found) {
-                        rval = qla2xxx_hw_event_store(vha, marker);
-                        if (rval != QLA_SUCCESS) {
-                                DEBUG2(qla_printk(KERN_WARNING, ha,
-                                    "HW event -- Failed marker write=%x.!\n",
-                                    rval));
-                                return rval;
-                        }
-                        ha->flags.hw_event_marker_found = 1;
-                }
-        }
-
-        /* Store error.  */
-        fdata[0] = cpu_to_le32(code << 16 | d1);
-        fdata[1] = cpu_to_le32(d2 << 16 | d3);
-        rval = qla2xxx_hw_event_store(vha, fdata);
-        if (rval != QLA_SUCCESS) {
-                DEBUG2(qla_printk(KERN_WARNING, ha,
-                    "HW event -- Failed error write=%x.!\n",
-                    rval));
-        }
-
-        return rval;
-}