On 11/17/2014 10:54 AM, Sumit.Saxena@xxxxxxxxxxxxx wrote:
> In OCR(Online Controller Reset) path, driver sets adapter state to MEGASAS_HBA_OPERATIONAL before getting new RAID map.
> There will be a small window where IO will come from OS with old RAID map.
> This patch will update adapter state to MEGASAS_HBA_OPERATIONAL, only after driver has new RAID map to avoid
> any IOs getting build using old RAID map.
>
> Signed-off-by: Sumit Saxena <sumit.saxena@xxxxxxxxxxxxx>
> Signed-off-by: Kashyap Desai <kashyap.desai@xxxxxxxxxxxxx>
> ---
> drivers/scsi/megaraid/megaraid_sas.h | 3 +-
> drivers/scsi/megaraid/megaraid_sas_base.c | 82 +++++++++++++++++++++++----
> drivers/scsi/megaraid/megaraid_sas_fusion.c | 55 +++++-------------
> drivers/scsi/megaraid/megaraid_sas_fusion.h | 2 -
> 4 files changed, 85 insertions(+), 57 deletions(-)
>
> diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
> index 401f4a2..0d44d91 100644
> --- a/drivers/scsi/megaraid/megaraid_sas.h
> +++ b/drivers/scsi/megaraid/megaraid_sas.h
> @@ -1931,8 +1931,7 @@ u16 get_updated_dev_handle(struct megasas_instance *instance,
> struct LD_LOAD_BALANCE_INFO *lbInfo, struct IO_REQUEST_INFO *in_info);
> void mr_update_load_balance_params(struct MR_DRV_RAID_MAP_ALL *map,
> struct LD_LOAD_BALANCE_INFO *lbInfo);
> -int megasas_get_ctrl_info(struct megasas_instance *instance,
> - struct megasas_ctrl_info *ctrl_info);
> +int megasas_get_ctrl_info(struct megasas_instance *instance);
> int megasas_set_crash_dump_params(struct megasas_instance *instance,
> u8 crash_buf_state);
> void megasas_free_host_crash_buffer(struct megasas_instance *instance);
> diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
> index 3781920..8262067 100644
> --- a/drivers/scsi/megaraid/megaraid_sas_base.c
> +++ b/drivers/scsi/megaraid/megaraid_sas_base.c
> @@ -4033,25 +4033,83 @@ megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
> return ret;
> }
>
> +/*
> + * megasas_update_ext_vd_details : Update details w.r.t Extended VD
> + * instance : Controller's instance
> +*/
> +static void megasas_update_ext_vd_details(struct megasas_instance *instance)
> +{
> + struct fusion_context *fusion;
> + u32 old_map_sz;
> + u32 new_map_sz;
> +
> + fusion = instance->ctrl_context;
> + /* For MFI based controllers return dummy success */
> + if (!fusion)
> + return;
> +
> + instance->supportmax256vd =
> + instance->ctrl_info->adapterOperations3.supportMaxExtLDs;
> + /* Below is additional check to address future FW enhancement */
> + if (instance->ctrl_info->max_lds > 64)
> + instance->supportmax256vd = 1;
> +
> + instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
> + * MEGASAS_MAX_DEV_PER_CHANNEL;
> + instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
> + * MEGASAS_MAX_DEV_PER_CHANNEL;
> + if (instance->supportmax256vd) {
> + instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
> + instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
> + } else {
> + instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
> + instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
> + }
> + dev_info(&instance->pdev->dev, "Firmware supports %d VD %d PD\n",
> + instance->fw_supported_vd_count,
> + instance->fw_supported_pd_count);
> + dev_info(&instance->pdev->dev, "Driver supports %d VD %d PD\n",
> + instance->drv_supported_vd_count,
> + instance->drv_supported_pd_count);
> +
> + old_map_sz = sizeof(struct MR_FW_RAID_MAP) +
> + (sizeof(struct MR_LD_SPAN_MAP) *
> + (instance->fw_supported_vd_count - 1));
> + new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
> + fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP) +
> + (sizeof(struct MR_LD_SPAN_MAP) *
> + (instance->drv_supported_vd_count - 1));
> +
> + fusion->max_map_sz = max(old_map_sz, new_map_sz);
> +
> +
> + if (instance->supportmax256vd)
> + fusion->current_map_sz = new_map_sz;
> + else
> + fusion->current_map_sz = old_map_sz;
> +
> +}
> +
> /**
> * megasas_get_controller_info - Returns FW's controller structure
> * @instance: Adapter soft state
> - * @ctrl_info: Controller information structure
> *
> * Issues an internal command (DCMD) to get the FW's controller structure.
> * This information is mainly used to find out the maximum IO transfer per
> * command supported by the FW.
> */
> int
> -megasas_get_ctrl_info(struct megasas_instance *instance,
> - struct megasas_ctrl_info *ctrl_info)
> +megasas_get_ctrl_info(struct megasas_instance *instance)
> {
> int ret = 0;
> struct megasas_cmd *cmd;
> struct megasas_dcmd_frame *dcmd;
> struct megasas_ctrl_info *ci;
> + struct megasas_ctrl_info *ctrl_info;
> dma_addr_t ci_h = 0;
>
> + ctrl_info = instance->ctrl_info;
> +
> cmd = megasas_get_cmd(instance);
>
> if (!cmd) {
> @@ -4091,8 +4149,13 @@ megasas_get_ctrl_info(struct megasas_instance *instance,
> else
> ret = megasas_issue_polled(instance, cmd);
>
> - if (!ret)
> + if (!ret) {
> memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
> + le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
> + le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
> + le32_to_cpus((u32 *)&ctrl_info->adapterOperations3);
> + megasas_update_ext_vd_details(instance);
> + }
>
> pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
> ci, ci_h);
> @@ -4294,7 +4357,7 @@ megasas_init_adapter_mfi(struct megasas_instance *instance)
> if (megasas_issue_init_mfi(instance))
> goto fail_fw_init;
>
> - if (megasas_get_ctrl_info(instance, instance->ctrl_info)) {
> + if (megasas_get_ctrl_info(instance)) {
> dev_err(&instance->pdev->dev, "(%d): Could get controller info "
> "Fail from %s %d\n", instance->unique_id,
> __func__, __LINE__);
> @@ -4532,12 +4595,8 @@ static int megasas_init_fw(struct megasas_instance *instance)
> dev_info(&instance->pdev->dev,
> "Controller type: iMR\n");
> }
> - /* OnOffProperties are converted into CPU arch*/
> - le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
> instance->disableOnlineCtrlReset =
> ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
> - /* adapterOperations2 are converted into CPU arch*/
> - le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
> instance->mpio = ctrl_info->adapterOperations2.mpio;
> instance->UnevenSpanSupport =
> ctrl_info->adapterOperations2.supportUnevenSpans;
> @@ -4567,7 +4626,6 @@ static int megasas_init_fw(struct megasas_instance *instance)
> "requestorId %d\n", instance->requestorId);
> }
>
> - le32_to_cpus((u32 *)&ctrl_info->adapterOperations3);
> instance->crash_dump_fw_support =
> ctrl_info->adapterOperations3.supportCrashDump;
> instance->crash_dump_drv_support =
> @@ -4592,8 +4650,6 @@ static int megasas_init_fw(struct megasas_instance *instance)
> if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
> instance->max_sectors_per_req = tmp_sectors;
>
> - kfree(ctrl_info);
> -
> /* Check for valid throttlequeuedepth module parameter */
> if (instance->is_imr) {
> if (throttlequeuedepth > (instance->max_fw_cmds -
> @@ -5084,6 +5140,8 @@ static int megasas_probe_one(struct pci_dev *pdev,
> goto fail_alloc_dma_buf;
> }
> fusion = instance->ctrl_context;
> + memset(fusion, 0,
> + ((1 << PAGE_SHIFT) << instance->ctrl_context_pages));
> INIT_LIST_HEAD(&fusion->cmd_pool);
> spin_lock_init(&fusion->mpt_pool_lock);
> memset(fusion->load_balance_info, 0,
> diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
> index 92f3354..98dfc1d 100644
> --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
> +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
> @@ -1067,48 +1067,16 @@ megasas_init_adapter_fusion(struct megasas_instance *instance)
> goto fail_ioc_init;
>
> megasas_display_intel_branding(instance);
> - if (megasas_get_ctrl_info(instance, instance->ctrl_info)) {
> + if (megasas_get_ctrl_info(instance)) {
> dev_err(&instance->pdev->dev,
> "Could not get controller info. Fail from %s %d\n",
> __func__, __LINE__);
> goto fail_ioc_init;
> }
>
> - instance->supportmax256vd =
> - instance->ctrl_info->adapterOperations3.supportMaxExtLDs;
> - /* Below is additional check to address future FW enhancement */
> - if (instance->ctrl_info->max_lds > 64)
> - instance->supportmax256vd = 1;
> - instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
> - * MEGASAS_MAX_DEV_PER_CHANNEL;
> - instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
> - * MEGASAS_MAX_DEV_PER_CHANNEL;
> - if (instance->supportmax256vd) {
> - instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
> - instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
> - } else {
> - instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
> - instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
> - }
> - dev_info(&instance->pdev->dev, "Firmware supports %d VDs %d PDs\n"
> - "Driver supports %d VDs %d PDs\n",
> - instance->fw_supported_vd_count,
> - instance->fw_supported_pd_count,
> - instance->drv_supported_vd_count,
> - instance->drv_supported_pd_count);
> -
> instance->flag_ieee = 1;
> fusion->fast_path_io = 0;
>
> - fusion->old_map_sz =
> - sizeof(struct MR_FW_RAID_MAP) + (sizeof(struct MR_LD_SPAN_MAP) *
> - (instance->fw_supported_vd_count - 1));
> - fusion->new_map_sz =
> - sizeof(struct MR_FW_RAID_MAP_EXT);
> - fusion->drv_map_sz =
> - sizeof(struct MR_DRV_RAID_MAP) + (sizeof(struct MR_LD_SPAN_MAP) *
> - (instance->drv_supported_vd_count - 1));
> -
> fusion->drv_map_pages = get_order(fusion->drv_map_sz);
> for (i = 0; i < 2; i++) {
> fusion->ld_map[i] = NULL;
> @@ -1123,16 +1091,10 @@ megasas_init_adapter_fusion(struct megasas_instance *instance)
> fusion->drv_map_pages);
> goto fail_ioc_init;
> }
> + memset(fusion->ld_drv_map[i], 0,
> + ((1 << PAGE_SHIFT) << fusion->drv_map_pages));
> }
>
> - fusion->max_map_sz = max(fusion->old_map_sz, fusion->new_map_sz);
> -
> - if (instance->supportmax256vd)
> - fusion->current_map_sz = fusion->new_map_sz;
> - else
> - fusion->current_map_sz = fusion->old_map_sz;
> -
> -
> for (i = 0; i < 2; i++) {
> fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
> fusion->max_map_sz,
> @@ -2387,6 +2349,8 @@ megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
> "memory allocation failed at index %d\n", i);
> break;
> }
> + memset(instance->crash_buf[i], 0,
> + ((1 << PAGE_SHIFT) << instance->crash_buf_pages));
> }
> instance->drv_buf_alloc = i;
> }
> @@ -2844,6 +2808,15 @@ int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout)
> instance->instancet->enable_intr(instance);
> instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
>
> + if (megasas_get_ctrl_info(instance)) {
> + dev_info(&instance->pdev->dev,
> + "Failed from %s %d\n",
> + __func__, __LINE__);
> + instance->adprecovery =
> + MEGASAS_HW_CRITICAL_ERROR;
> + megaraid_sas_kill_hba(instance);
> + retval = FAILED;
> + }
> /* Reset load balance info */
> memset(fusion->load_balance_info, 0,
> sizeof(struct LD_LOAD_BALANCE_INFO)
> diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h
> index 92ecd39..5ab7dae 100644
> --- a/drivers/scsi/megaraid/megaraid_sas_fusion.h
> +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h
> @@ -836,8 +836,6 @@ struct fusion_context {
>
> u32 max_map_sz;
> u32 current_map_sz;
> - u32 old_map_sz;
> - u32 new_map_sz;
> u32 drv_map_sz;
> u32 drv_map_pages;
> u8 fast_path_io;
Reviewed-by: Tomas Henzl <thenzl@xxxxxxxxxx>
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