diff options
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas.c')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c index 18d3a312c29..a92998fe246 100644 --- a/drivers/scsi/megaraid/megaraid_sas.c +++ b/drivers/scsi/megaraid/megaraid_sas.c @@ -875,6 +875,12 @@ megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, pthru->sge_count = megasas_make_sgl32(instance, scp, &pthru->sgl); + if (pthru->sge_count > instance->max_num_sge) { + printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n", + pthru->sge_count); + return 0; + } + /* * Sense info specific */ @@ -1001,6 +1007,12 @@ megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, } else ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); + if (ldio->sge_count > instance->max_num_sge) { + printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n", + ldio->sge_count); + return 0; + } + /* * Sense info specific */ @@ -2296,6 +2308,86 @@ megasas_get_pd_list(struct megasas_instance *instance) return ret; } +/* + * megasas_get_ld_list_info - Returns FW's ld_list structure + * @instance: Adapter soft state + * @ld_list: ld_list structure + * + * Issues an internal command (DCMD) to get the FW's controller PD + * list structure. This information is mainly used to find out SYSTEM + * supported by the FW. + */ +static int +megasas_get_ld_list(struct megasas_instance *instance) +{ + int ret = 0, ld_index = 0, ids = 0; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct MR_LD_LIST *ci; + dma_addr_t ci_h = 0; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n"); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + ci = pci_alloc_consistent(instance->pdev, + sizeof(struct MR_LD_LIST), + &ci_h); + + if (!ci) { + printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n"); + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + + memset(ci, 0, sizeof(*ci)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0xFF; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_READ; + dcmd->timeout = 0; + dcmd->data_xfer_len = sizeof(struct MR_LD_LIST); + dcmd->opcode = MR_DCMD_LD_GET_LIST; + dcmd->sgl.sge32[0].phys_addr = ci_h; + dcmd->sgl.sge32[0].length = sizeof(struct MR_LD_LIST); + dcmd->pad_0 = 0; + + if (!megasas_issue_polled(instance, cmd)) { + ret = 0; + } else { + ret = -1; + } + + /* the following function will get the instance PD LIST */ + + if ((ret == 0) && (ci->ldCount < MAX_LOGICAL_DRIVES)) { + memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); + + for (ld_index = 0; ld_index < ci->ldCount; ld_index++) { + if (ci->ldList[ld_index].state != 0) { + ids = ci->ldList[ld_index].ref.targetId; + instance->ld_ids[ids] = + ci->ldList[ld_index].ref.targetId; + } + } + } + + pci_free_consistent(instance->pdev, + sizeof(struct MR_LD_LIST), + ci, + ci_h); + + megasas_return_cmd(instance, cmd); + return ret; +} + /** * megasas_get_controller_info - Returns FW's controller structure * @instance: Adapter soft state @@ -2593,6 +2685,9 @@ static int megasas_init_mfi(struct megasas_instance *instance) (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); megasas_get_pd_list(instance); + memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); + megasas_get_ld_list(instance); + ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL); /* |