This patch will add support for Single Server High Availability(SSHA) cluster support.
Here is the short decsription of changes done to add support for SSHA-
1) Host will send system's Unique ID based on DMI_PRODUCT_UUID to firmware.
2) Toggle the devhandle in LDIO path for Remote LDs.
Signed-off-by: Kashyap Desai <kashyap.desai@xxxxxxxxxxxxx>
Signed-off-by: Sumit Saxena <sumit.saxena@xxxxxxxxxxxxx>
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>
Reviewed-by: Tomas Henzl <thenzl@xxxxxxxxxx>
---
drivers/scsi/megaraid/megaraid_sas.h | 17 +++++++++++++++--
drivers/scsi/megaraid/megaraid_sas_base.c | 15 ++++++++++++++-
drivers/scsi/megaraid/megaraid_sas_fusion.c | 20 ++++++++++++++++++++
3 files changed, 49 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 1c8cb85..ab488e0 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -1271,8 +1271,10 @@ struct megasas_init_frame {
u32 queue_info_new_phys_addr_hi; /*1Ch */
u32 queue_info_old_phys_addr_lo; /*20h */
u32 queue_info_old_phys_addr_hi; /*24h */
-
- u32 reserved_4[6]; /*28h */
+ u32 reserved_4[2]; /*28h */
+ u32 system_info_lo; /*30h */
+ u32 system_info_hi; /*34h */
+ u32 reserved_5[2]; /*38h */
} __attribute__ ((packed));
@@ -1649,12 +1651,22 @@ struct megasas_irq_context {
u32 MSIxIndex;
};
+struct MR_DRV_SYSTEM_INFO {
+ u8 infoVersion;
+ u8 systemIdLength;
+ u16 reserved0;
+ u8 systemId[64];
+ u8 reserved[1980];
+};
+
struct megasas_instance {
u32 *producer;
dma_addr_t producer_h;
u32 *consumer;
dma_addr_t consumer_h;
+ struct MR_DRV_SYSTEM_INFO *system_info_buf;
+ dma_addr_t system_info_h;
struct MR_LD_VF_AFFILIATION *vf_affiliation;
dma_addr_t vf_affiliation_h;
struct MR_LD_VF_AFFILIATION_111 *vf_affiliation_111;
@@ -1769,6 +1781,7 @@ struct megasas_instance {
u16 throttlequeuedepth;
u8 mask_interrupts;
u8 is_imr;
+ bool dev_handle;
};
struct MR_LD_VF_MAP {
u32 size;
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 0c4a324..efb908c 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -5269,6 +5269,13 @@ static int megasas_probe_one(struct pci_dev *pdev,
break;
}
+ instance->system_info_buf = pci_zalloc_consistent(pdev,
+ sizeof(struct MR_DRV_SYSTEM_INFO),
+ &instance->system_info_h);
+
+ if (!instance->system_info_buf)
+ dev_info(&instance->pdev->dev, "Can't allocate system info buffer\n");
+
/* Crash dump feature related initialisation*/
instance->drv_buf_index = 0;
instance->drv_buf_alloc = 0;
@@ -5680,8 +5687,10 @@ megasas_resume(struct pci_dev *pdev)
&instance->sriov_heartbeat_timer,
megasas_sriov_heartbeat_handler,
MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
- else
+ else {
instance->skip_heartbeat_timer_del = 1;
+ goto fail_init_mfi;
+ }
}
instance->instancet->enable_intr(instance);
@@ -5837,6 +5846,10 @@ static void megasas_detach_one(struct pci_dev *pdev)
pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE,
instance->crash_dump_buf, instance->crash_dump_h);
+ if (instance->system_info_buf)
+ pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO),
+ instance->system_info_buf, instance->system_info_h);
+
scsi_host_put(host);
pci_disable_device(pdev);
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 6f07f91..ad1238f 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -53,6 +53,7 @@
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_dbg.h>
+#include <linux/dmi.h>
#include "megaraid_sas_fusion.h"
#include "megaraid_sas.h"
@@ -579,6 +580,7 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
int i;
struct megasas_header *frame_hdr;
+ const char *sys_info;
fusion = instance->ctrl_context;
@@ -641,6 +643,16 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
/* Convert capability to LE32 */
cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
+ sys_info = dmi_get_system_info(DMI_PRODUCT_UUID);
+ if (instance->system_info_buf && sys_info) {
+ memcpy(instance->system_info_buf->systemId, sys_info,
+ strlen(sys_info) > 64 ? 64 : strlen(sys_info));
+ instance->system_info_buf->systemIdLength =
+ strlen(sys_info) > 64 ? 64 : strlen(sys_info);
+ init_frame->system_info_lo = instance->system_info_h;
+ init_frame->system_info_hi = 0;
+ }
+
init_frame->queue_info_new_phys_addr_hi =
cpu_to_le32(upper_32_bits(ioc_init_handle));
init_frame->queue_info_new_phys_addr_lo =
@@ -1572,6 +1584,14 @@ megasas_build_ldio_fusion(struct megasas_instance *instance,
cmd->pd_r1_lb = io_info.pd_after_lb;
} else
scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
+
+ if ((raidLUN[0] == 1) &&
+ (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 2)) {
+ instance->dev_handle = !(instance->dev_handle);
+ io_info.devHandle =
+ local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle];
+ }
+
cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
io_request->DevHandle = io_info.devHandle;
/* populate the LUN field */
--
1.7.1
--
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