On 04/20/2015 02:33 PM, Sumit.Saxena@xxxxxxxxxxxxx wrote:
> 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>
>
> ---
> 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 680d90b..225d806 100644
> --- a/drivers/scsi/megaraid/megaraid_sas.h
> +++ b/drivers/scsi/megaraid/megaraid_sas.h
> @@ -1272,8 +1272,10 @@ 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));
>
> @@ -1650,12 +1652,22 @@ 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;
> @@ -1770,6 +1782,7 @@ 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 6c84f88..2424ab2 100644
> --- a/drivers/scsi/megaraid/megaraid_sas_base.c
> +++ b/drivers/scsi/megaraid/megaraid_sas_base.c
> @@ -5246,6 +5246,13 @@ static int megasas_probe_one(struct pci_dev *pdev,
> break;
> }
>
> + instance->system_info_buf = pci_alloc_consistent(pdev,
> + sizeof(struct MR_DRV_SYSTEM_INFO),
> + &instance->system_info_h);
I haven't found the place where the driver send the information to firmware,
anyway weren't here a pci_zalloc_consistent better?
Tomas
> +
> + 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;
> @@ -5673,8 +5680,10 @@ 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);
> @@ -5838,6 +5847,10 @@ 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 9ce4813..59848e9 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"
> @@ -609,6 +610,7 @@ 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;
>
> @@ -671,6 +673,16 @@ 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 =
> @@ -1602,6 +1614,14 @@ 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 */
--
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