[SCSI] megaraid_sas: add the logical drive list to driver
Driver issue the get ld list to fw to get the logic drive list.
Driver will keep the logic drive list for the internal use after
driver load.
Signed-off-by Bo Yang<bo.yang@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index 18d3a31..a92998f 100644
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -875,6 +875,12 @@
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 @@
} 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 @@
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 @@
(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);
/*