From 81e403ce3c6a34cd705bf54d4cdeefdeb7068a8d Mon Sep 17 00:00:00 2001 From: "Yang, Bo" Date: Tue, 6 Oct 2009 14:27:54 -0600 Subject: [SCSI] megaraid_sas: infrastructure to get PDs from FW Add system PDs to OS. Driver implemented the get_pd_list function to get the system PD from FW. Signed-off-by Bo Yang Signed-off-by: James Bottomley --- drivers/scsi/megaraid/megaraid_sas.c | 96 ++++++++++++++++++++++++++++++++++++ 1 file changed, 96 insertions(+) (limited to 'drivers/scsi/megaraid/megaraid_sas.c') diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c index b6e43271883..48c3658d73a 100644 --- a/drivers/scsi/megaraid/megaraid_sas.c +++ b/drivers/scsi/megaraid/megaraid_sas.c @@ -2036,6 +2036,98 @@ static int megasas_alloc_cmds(struct megasas_instance *instance) return 0; } +/* + * megasas_get_pd_list_info - Returns FW's pd_list structure + * @instance: Adapter soft state + * @pd_list: pd_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_pd_list(struct megasas_instance *instance) +{ + int ret = 0, pd_index = 0; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct MR_PD_LIST *ci; + struct MR_PD_ADDRESS *pd_addr; + dma_addr_t ci_h = 0; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n"); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + ci = pci_alloc_consistent(instance->pdev, + MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h); + + if (!ci) { + printk(KERN_DEBUG "Failed to alloc mem for pd_list\n"); + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + + memset(ci, 0, sizeof(*ci)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; + dcmd->mbox.b[1] = 0; + 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 = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST); + dcmd->opcode = MR_DCMD_PD_LIST_QUERY; + dcmd->sgl.sge32[0].phys_addr = ci_h; + dcmd->sgl.sge32[0].length = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST); + + if (!megasas_issue_polled(instance, cmd)) { + ret = 0; + } else { + ret = -1; + } + + /* + * the following function will get the instance PD LIST. + */ + + pd_addr = ci->addr; + + if ( ret == 0 && + (ci->count < + (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) { + + memset(instance->pd_list, 0, + MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); + + for (pd_index = 0; pd_index < ci->count; pd_index++) { + + instance->pd_list[pd_addr->deviceId].tid = + pd_addr->deviceId; + instance->pd_list[pd_addr->deviceId].driveType = + pd_addr->scsiDevType; + instance->pd_list[pd_addr->deviceId].driveState = + MR_PD_STATE_SYSTEM; + pd_addr++; + } + } + + pci_free_consistent(instance->pdev, + MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), + ci, ci_h); + megasas_return_cmd(instance, cmd); + + return ret; +} + + /** * megasas_get_controller_info - Returns FW's controller structure * @instance: Adapter soft state @@ -2326,6 +2418,10 @@ static int megasas_init_mfi(struct megasas_instance *instance) if (megasas_issue_init_mfi(instance)) goto fail_fw_init; + memset(instance->pd_list, 0 , + (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); + megasas_get_pd_list(instance); + ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL); /* -- cgit v1.2.3-70-g09d2