Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp

Conflicts:
	litmus/sched_cedf.c

1 files changed, 39 insertions, 23 deletions

diff --git a/drivers/block/cciss_scsi.c b/drivers/block/cciss_scsi.c
index 575495f3c4b8..696100241a6f 100644
--- a/drivers/block/cciss_scsi.c
+++ b/drivers/block/cciss_scsi.c
@@ -62,8 +62,8 @@ static int cciss_scsi_proc_info(
                 int length,        /* length of data in buffer */
                 int func);         /* 0 == read, 1 == write */
 
-static int cciss_scsi_queue_command (struct scsi_cmnd *cmd,
-                void (* done)(struct scsi_cmnd *));
+static int cciss_scsi_queue_command (struct Scsi_Host *h,
+                                     struct scsi_cmnd *cmd);
 static int cciss_eh_device_reset_handler(struct scsi_cmnd *);
 static int cciss_eh_abort_handler(struct scsi_cmnd *);
 
@@ -84,7 +84,6 @@ static struct scsi_host_template cciss_driver_template = {
         .proc_name              = "cciss",
         .proc_info              = cciss_scsi_proc_info,
         .queuecommand           = cciss_scsi_queue_command,
-        .can_queue              = SCSI_CCISS_CAN_QUEUE,
         .this_id                = 7,
         .cmd_per_lun            = 1,
         .use_clustering         = DISABLE_CLUSTERING,
@@ -108,16 +107,13 @@ struct cciss_scsi_cmd_stack_elem_t {
 
 #pragma pack()
 
-#define CMD_STACK_SIZE (SCSI_CCISS_CAN_QUEUE * \
-                CCISS_MAX_SCSI_DEVS_PER_HBA + 2)
-                        // plus two for init time usage
-
 #pragma pack(1)
 struct cciss_scsi_cmd_stack_t {
         struct cciss_scsi_cmd_stack_elem_t *pool;
-        struct cciss_scsi_cmd_stack_elem_t *elem[CMD_STACK_SIZE];
+        struct cciss_scsi_cmd_stack_elem_t **elem;
         dma_addr_t cmd_pool_handle;
         int top;
+        int nelems;
 };
 #pragma pack()
 
@@ -191,7 +187,7 @@ scsi_cmd_free(ctlr_info_t *h, CommandList_struct *c)
         sa = h->scsi_ctlr;
         stk = &sa->cmd_stack; 
         stk->top++;
-        if (stk->top >= CMD_STACK_SIZE) {
+        if (stk->top >= stk->nelems) {
                 dev_err(&h->pdev->dev,
                         "scsi_cmd_free called too many times.\n");
                 BUG();
@@ -206,13 +202,14 @@ scsi_cmd_stack_setup(ctlr_info_t *h, struct cciss_scsi_adapter_data_t *sa)
         struct cciss_scsi_cmd_stack_t *stk;
         size_t size;
 
+        stk = &sa->cmd_stack;
+        stk->nelems = cciss_tape_cmds + 2;
         sa->cmd_sg_list = cciss_allocate_sg_chain_blocks(h,
-                h->chainsize, CMD_STACK_SIZE);
+                h->chainsize, stk->nelems);
         if (!sa->cmd_sg_list && h->chainsize > 0)
                 return -ENOMEM;
 
-        stk = &sa->cmd_stack; 
-        size = sizeof(struct cciss_scsi_cmd_stack_elem_t) * CMD_STACK_SIZE;
+        size = sizeof(struct cciss_scsi_cmd_stack_elem_t) * stk->nelems;
 
         /* Check alignment, see cciss_cmd.h near CommandList_struct def. */
         BUILD_BUG_ON((sizeof(*stk->pool) % COMMANDLIST_ALIGNMENT) != 0);
@@ -221,18 +218,23 @@ scsi_cmd_stack_setup(ctlr_info_t *h, struct cciss_scsi_adapter_data_t *sa)
                 pci_alloc_consistent(h->pdev, size, &stk->cmd_pool_handle);
 
         if (stk->pool == NULL) {
-                cciss_free_sg_chain_blocks(sa->cmd_sg_list, CMD_STACK_SIZE);
+                cciss_free_sg_chain_blocks(sa->cmd_sg_list, stk->nelems);
                 sa->cmd_sg_list = NULL;
                 return -ENOMEM;
         }
-
-        for (i=0; i<CMD_STACK_SIZE; i++) {
+        stk->elem = kmalloc(sizeof(stk->elem[0]) * stk->nelems, GFP_KERNEL);
+        if (!stk->elem) {
+                pci_free_consistent(h->pdev, size, stk->pool,
+                stk->cmd_pool_handle);
+                return -1;
+        }
+        for (i = 0; i < stk->nelems; i++) {
                 stk->elem[i] = &stk->pool[i];
                 stk->elem[i]->busaddr = (__u32) (stk->cmd_pool_handle + 
                         (sizeof(struct cciss_scsi_cmd_stack_elem_t) * i));
                 stk->elem[i]->cmdindex = i;
         }
-        stk->top = CMD_STACK_SIZE-1;
+        stk->top = stk->nelems-1;
         return 0;
 }
 
@@ -245,16 +247,18 @@ scsi_cmd_stack_free(ctlr_info_t *h)
 
         sa = h->scsi_ctlr;
         stk = &sa->cmd_stack; 
-        if (stk->top != CMD_STACK_SIZE-1) {
+        if (stk->top != stk->nelems-1) {
                 dev_warn(&h->pdev->dev,
                         "bug: %d scsi commands are still outstanding.\n",
-                        CMD_STACK_SIZE - stk->top);
+                        stk->nelems - stk->top);
         }
-        size = sizeof(struct cciss_scsi_cmd_stack_elem_t) * CMD_STACK_SIZE;
+        size = sizeof(struct cciss_scsi_cmd_stack_elem_t) * stk->nelems;
 
         pci_free_consistent(h->pdev, size, stk->pool, stk->cmd_pool_handle);
         stk->pool = NULL;
-        cciss_free_sg_chain_blocks(sa->cmd_sg_list, CMD_STACK_SIZE);
+        cciss_free_sg_chain_blocks(sa->cmd_sg_list, stk->nelems);
+        kfree(stk->elem);
+        stk->elem = NULL;
 }
 
 #if 0
@@ -824,13 +828,18 @@ static void complete_scsi_command(CommandList_struct *c, int timeout,
                         break;
                         case CMD_UNSOLICITED_ABORT:
                                 cmd->result = DID_ABORT << 16;
-                                dev_warn(&h->pdev->dev, "%p aborted do to an "
+                                dev_warn(&h->pdev->dev, "%p aborted due to an "
                                         "unsolicited abort\n", c);
                         break;
                         case CMD_TIMEOUT:
                                 cmd->result = DID_TIME_OUT << 16;
                                 dev_warn(&h->pdev->dev, "%p timedout\n", c);
                         break;
+                        case CMD_UNABORTABLE:
+                                cmd->result = DID_ERROR << 16;
+                                dev_warn(&h->pdev->dev, "c %p command "
+                                        "unabortable\n", c);
+                        break;
                         default:
                                 cmd->result = DID_ERROR << 16;
                                 dev_warn(&h->pdev->dev,
@@ -854,6 +863,7 @@ cciss_scsi_detect(ctlr_info_t *h)
         sh->io_port = 0;        // good enough?  FIXME, 
         sh->n_io_port = 0;      // I don't think we use these two...
         sh->this_id = SELF_SCSI_ID;  
+        sh->can_queue = cciss_tape_cmds;
         sh->sg_tablesize = h->maxsgentries;
         sh->max_cmd_len = MAX_COMMAND_SIZE;
 
@@ -1007,11 +1017,15 @@ cciss_scsi_interpret_error(ctlr_info_t *h, CommandList_struct *c)
                 break;
                 case CMD_UNSOLICITED_ABORT:
                         dev_warn(&h->pdev->dev,
-                                "%p aborted do to an unsolicited abort\n", c);
+                                "%p aborted due to an unsolicited abort\n", c);
                 break;
                 case CMD_TIMEOUT:
                         dev_warn(&h->pdev->dev, "%p timedout\n", c);
                 break;
+                case CMD_UNABORTABLE:
+                        dev_warn(&h->pdev->dev,
+                                "%p unabortable\n", c);
+                break;
                 default:
                         dev_warn(&h->pdev->dev,
                                 "%p returned unknown status %x\n",
@@ -1406,7 +1420,7 @@ static void cciss_scatter_gather(ctlr_info_t *h, CommandList_struct *c,
 
 
 static int
-cciss_scsi_queue_command (struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
+cciss_scsi_queue_command_lck(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 {
         ctlr_info_t *h;
         int rc;
@@ -1504,6 +1518,8 @@ cciss_scsi_queue_command (struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd
         return 0;
 }
 
+static DEF_SCSI_QCMD(cciss_scsi_queue_command)
+
 static void cciss_unregister_scsi(ctlr_info_t *h)
 {
         struct cciss_scsi_adapter_data_t *sa;