Patch which fix the issue reported as below. http://marc.info/?l=linux-scsi&m=143694494104544&w=2 This patch will try to do chip reset from driver load time. Driver load time, if firmware is not comming to ready state, driver try chip reset calling adp_reset() callback. For fusion adapter, that call back was void, so it will not do any chip reset. Now, using this patch megasas_adp_reset_fusion() will have chip reset logic for Fusion adapter. Signed-off-by: Sumit Saxena <sumit.saxena@xxxxxxxxxxxxx> Signed-off-by: Kashyap Desai <kashyap.desai@xxxxxxxxxxxxx> --- drivers/scsi/megaraid/megaraid_sas_fusion.c | 143 +++++++++++++-------------- 1 files changed, 68 insertions(+), 75 deletions(-) diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index d1ff580..9f39859 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -2511,6 +2511,70 @@ static int megasas_adp_reset_fusion(struct megasas_instance *instance, struct megasas_register_set __iomem *regs) { + u32 host_diag, abs_state, retry; + + /* Now try to reset the chip */ + writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); + writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset); + writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset); + writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset); + writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); + writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); + writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); + + /* Check that the diag write enable (DRWE) bit is on */ + host_diag = readl(&instance->reg_set->fusion_host_diag); + retry = 0; + while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) { + msleep(100); + host_diag = readl(&instance->reg_set->fusion_host_diag); + if (retry++ == 100) { + dev_warn(&instance->pdev->dev, + "Host diag unlock failed from %s %d\n", + __func__, __LINE__); + break; + } + } + if (!(host_diag & HOST_DIAG_WRITE_ENABLE)) + return -1; + + /* Send chip reset command */ + writel(host_diag | HOST_DIAG_RESET_ADAPTER, + &instance->reg_set->fusion_host_diag); + msleep(3000); + + /* Make sure reset adapter bit is cleared */ + host_diag = readl(&instance->reg_set->fusion_host_diag); + retry = 0; + while (host_diag & HOST_DIAG_RESET_ADAPTER) { + msleep(100); + host_diag = readl(&instance->reg_set->fusion_host_diag); + if (retry++ == 1000) { + dev_warn(&instance->pdev->dev, + "Diag reset adapter never cleared %s %d\n", + __func__, __LINE__); + break; + } + } + if (host_diag & HOST_DIAG_RESET_ADAPTER) + return -1; + + abs_state = instance->instancet->read_fw_status_reg(instance->reg_set) + & MFI_STATE_MASK; + retry = 0; + + while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) { + msleep(100); + abs_state = instance->instancet-> + read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; + } + if (abs_state <= MFI_STATE_FW_INIT) { + dev_warn(&instance->pdev->dev, + "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n", + abs_state, __func__, __LINE__); + return -1; + } + return 0; } @@ -2676,11 +2740,11 @@ out: /* Core fusion reset function */ int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout) { - int retval = SUCCESS, i, retry = 0, convert = 0; + int retval = SUCCESS, i, convert = 0; struct megasas_instance *instance; struct megasas_cmd_fusion *cmd_fusion; struct fusion_context *fusion; - u32 host_diag, abs_state, status_reg, reset_adapter; + u32 abs_state, status_reg, reset_adapter; u32 io_timeout_in_crash_mode = 0; struct scsi_cmnd *scmd_local = NULL; @@ -2834,81 +2898,10 @@ int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout) /* Now try to reset the chip */ for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) { - writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, - &instance->reg_set->fusion_seq_offset); - writel(MPI2_WRSEQ_1ST_KEY_VALUE, - &instance->reg_set->fusion_seq_offset); - writel(MPI2_WRSEQ_2ND_KEY_VALUE, - &instance->reg_set->fusion_seq_offset); - writel(MPI2_WRSEQ_3RD_KEY_VALUE, - &instance->reg_set->fusion_seq_offset); - writel(MPI2_WRSEQ_4TH_KEY_VALUE, - &instance->reg_set->fusion_seq_offset); - writel(MPI2_WRSEQ_5TH_KEY_VALUE, - &instance->reg_set->fusion_seq_offset); - writel(MPI2_WRSEQ_6TH_KEY_VALUE, - &instance->reg_set->fusion_seq_offset); - - /* Check that the diag write enable (DRWE) bit is on */ - host_diag = readl(&instance->reg_set->fusion_host_diag); - retry = 0; - while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) { - msleep(100); - host_diag = - readl(&instance->reg_set->fusion_host_diag); - if (retry++ == 100) { - printk(KERN_WARNING "megaraid_sas: " - "Host diag unlock failed! " - "for scsi%d\n", - instance->host->host_no); - break; - } - } - if (!(host_diag & HOST_DIAG_WRITE_ENABLE)) - continue; - - /* Send chip reset command */ - writel(host_diag | HOST_DIAG_RESET_ADAPTER, - &instance->reg_set->fusion_host_diag); - msleep(3000); - - /* Make sure reset adapter bit is cleared */ - host_diag = readl(&instance->reg_set->fusion_host_diag); - retry = 0; - while (host_diag & HOST_DIAG_RESET_ADAPTER) { - msleep(100); - host_diag = - readl(&instance->reg_set->fusion_host_diag); - if (retry++ == 1000) { - printk(KERN_WARNING "megaraid_sas: " - "Diag reset adapter never " - "cleared for scsi%d!\n", - instance->host->host_no); - break; - } - } - if (host_diag & HOST_DIAG_RESET_ADAPTER) - continue; - abs_state = - instance->instancet->read_fw_status_reg( - instance->reg_set) & MFI_STATE_MASK; - retry = 0; - - while ((abs_state <= MFI_STATE_FW_INIT) && - (retry++ < 1000)) { - msleep(100); - abs_state = - instance->instancet->read_fw_status_reg( - instance->reg_set) & MFI_STATE_MASK; - } - if (abs_state <= MFI_STATE_FW_INIT) { - printk(KERN_WARNING "megaraid_sas: firmware " - "state < MFI_STATE_FW_INIT, state = " - "0x%x for scsi%d\n", abs_state, - instance->host->host_no); + if (instance->instancet->adp_reset + (instance, instance->reg_set)) continue; - } /* Wait for FW to become ready */ if (megasas_transition_to_ready(instance, 1)) { -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
