[SCSI] ipr: Enable multi-initator RAID support
Enables multi-initiator support on ipr RAID adapters that support it.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index d9f2083..b15dfcb 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -92,6 +92,7 @@
static unsigned int ipr_transop_timeout = 0;
static unsigned int ipr_enable_cache = 1;
static unsigned int ipr_debug = 0;
+static unsigned int ipr_dual_ioa_raid = 1;
static DEFINE_SPINLOCK(ipr_driver_lock);
/* This table describes the differences between DMA controller chips */
@@ -158,6 +159,8 @@
MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
module_param_named(debug, ipr_debug, int, 0);
MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
+module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
+MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
MODULE_LICENSE("GPL");
MODULE_VERSION(IPR_DRIVER_VERSION);
@@ -5882,6 +5885,94 @@
}
/**
+ * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
+ * @ipr_cmd: ipr command struct
+ *
+ * This function enables dual IOA RAID support if possible.
+ *
+ * Return value:
+ * IPR_RC_JOB_RETURN
+ **/
+static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
+{
+ struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
+ struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
+ struct ipr_mode_page24 *mode_page;
+ int length;
+
+ ENTER;
+ mode_page = ipr_get_mode_page(mode_pages, 0x24,
+ sizeof(struct ipr_mode_page24));
+
+ if (mode_page)
+ mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
+
+ length = mode_pages->hdr.length + 1;
+ mode_pages->hdr.length = 0;
+
+ ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
+ ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
+ length);
+
+ ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
+ ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
+
+ LEAVE;
+ return IPR_RC_JOB_RETURN;
+}
+
+/**
+ * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
+ * @ipr_cmd: ipr command struct
+ *
+ * This function handles the failure of a Mode Sense to the IOAFP.
+ * Some adapters do not handle all mode pages.
+ *
+ * Return value:
+ * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
+ **/
+static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
+{
+ u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
+
+ if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
+ ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
+ return IPR_RC_JOB_CONTINUE;
+ }
+
+ return ipr_reset_cmd_failed(ipr_cmd);
+}
+
+/**
+ * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
+ * @ipr_cmd: ipr command struct
+ *
+ * This function send a mode sense to the IOA to retrieve
+ * the IOA Advanced Function Control mode page.
+ *
+ * Return value:
+ * IPR_RC_JOB_RETURN
+ **/
+static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
+{
+ struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
+
+ ENTER;
+ ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
+ 0x24, ioa_cfg->vpd_cbs_dma +
+ offsetof(struct ipr_misc_cbs, mode_pages),
+ sizeof(struct ipr_mode_pages));
+
+ ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
+ ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
+
+ ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
+
+ LEAVE;
+ return IPR_RC_JOB_RETURN;
+}
+
+/**
* ipr_init_res_table - Initialize the resource table
* @ipr_cmd: ipr command struct
*
@@ -5949,7 +6040,10 @@
}
}
- ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
+ if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
+ ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
+ else
+ ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
LEAVE;
return IPR_RC_JOB_CONTINUE;
@@ -5971,8 +6065,11 @@
struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
+ struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
ENTER;
+ if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
+ ioa_cfg->dual_raid = 1;
dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
ucode_vpd->major_release, ucode_vpd->card_type,
ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
@@ -6056,6 +6153,37 @@
}
/**
+ * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
+ * @ipr_cmd: ipr command struct
+ *
+ * This function sends a Page 0xD0 inquiry to the adapter
+ * to retrieve adapter capabilities.
+ *
+ * Return value:
+ * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
+ **/
+static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
+{
+ struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
+ struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
+ struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
+
+ ENTER;
+ ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
+ memset(cap, 0, sizeof(*cap));
+
+ if (ipr_inquiry_page_supported(page0, 0xD0)) {
+ ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
+ ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
+ sizeof(struct ipr_inquiry_cap));
+ return IPR_RC_JOB_RETURN;
+ }
+
+ LEAVE;
+ return IPR_RC_JOB_CONTINUE;
+}
+
+/**
* ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
* @ipr_cmd: ipr command struct
*
@@ -6075,7 +6203,7 @@
if (!ipr_inquiry_page_supported(page0, 1))
ioa_cfg->cache_state = CACHE_NONE;
- ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
+ ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
ipr_ioafp_inquiry(ipr_cmd, 1, 3,
ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
@@ -6679,12 +6807,14 @@
ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
- if (shutdown_type == IPR_SHUTDOWN_ABBREV)
- timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
+ if (shutdown_type == IPR_SHUTDOWN_NORMAL)
+ timeout = IPR_SHUTDOWN_TIMEOUT;
else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
timeout = IPR_INTERNAL_TIMEOUT;
+ else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
+ timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
else
- timeout = IPR_SHUTDOWN_TIMEOUT;
+ timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);