diff options
| author | Sumit.Saxena@avagotech.com <Sumit.Saxena@avagotech.com> | 2015-04-23 16:32:09 +0530 |
|---|---|---|
| committer | James Bottomley <JBottomley@Odin.com> | 2015-05-25 08:46:29 -0700 |
| commit | 5765c5b8b38ad8a5e2c5716ea9af29ff3f1d2a62 (patch) | |
| tree | 7514614b72e0a469f28d9f33bfac2caea8964d04 /drivers/scsi/megaraid/megaraid_sas_fusion.c | |
| parent | 09fced191739963ff7ca8e61b67f80bd55c205f0 (diff) | |
| download | linux-5765c5b8b38ad8a5e2c5716ea9af29ff3f1d2a62.tar.bz2 | |
megaraid_sas : Support for Avago's Single server High Availability product
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@avagotech.com>
Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas_fusion.c')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index 6f07f9119066..ad1238fc47d3 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 */ |