vserver 1.9.5.x5
[linux-2.6.git] / drivers / block / cciss_scsi.c
index 9df82b8..6f6bc09 100644 (file)
@@ -16,7 +16,7 @@
  *    along with this program; if not, write to the Free Software
  *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  *
- *    Questions/Comments/Bugfixes to arrays@compaq.com
+ *    Questions/Comments/Bugfixes to iss_storagedev@hp.com
  *    
  *    Author: Stephen M. Cameron
  */
@@ -28,7 +28,9 @@
    through the array controller.  Note in particular, neither 
    physical nor logical disks are presented through the scsi layer. */
 
-#include "../scsi/scsi.h" 
+#include <scsi/scsi.h> 
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
 #include <scsi/scsi_host.h> 
 #include <asm/atomic.h>
 #include <linux/timer.h>
@@ -61,15 +63,8 @@ int cciss_scsi_proc_info(
                int length,        /* length of data in buffer */
                int func);         /* 0 == read, 1 == write */
 
-int cciss_scsi_queue_command (Scsi_Cmnd *cmd, void (* done)(Scsi_Cmnd *));
-#if 0
-int cciss_scsi_abort(Scsi_Cmnd *cmd);
-#if defined SCSI_RESET_SYNCHRONOUS && defined SCSI_RESET_ASYNCHRONOUS
-int cciss_scsi_reset(Scsi_Cmnd *cmd, unsigned int reset_flags);
-#else
-int cciss_scsi_reset(Scsi_Cmnd *cmd);
-#endif
-#endif
+int cciss_scsi_queue_command (struct scsi_cmnd *cmd, 
+               void (* done)(struct scsi_cmnd *));
 
 static struct cciss_scsi_hba_t ccissscsi[MAX_CTLR] = {
        { .name = "cciss0", .ndevices = 0 },
@@ -82,7 +77,7 @@ static struct cciss_scsi_hba_t ccissscsi[MAX_CTLR] = {
        { .name = "cciss7", .ndevices = 0 },
 };
 
-static Scsi_Host_Template cciss_driver_template = {
+static struct scsi_host_template cciss_driver_template = {
        .module                 = THIS_MODULE,
        .name                   = "cciss",
        .proc_name              = "cciss",
@@ -539,7 +534,7 @@ cciss_scsi_setup(int cntl_num)
        if (shba == NULL)
                return;
        shba->scsi_host = NULL;
-       shba->lock = SPIN_LOCK_UNLOCKED;
+       spin_lock_init(&shba->lock);
        shba->registered = 0;
        if (scsi_cmd_stack_setup(cntl_num, shba) != 0) {
                kfree(shba);
@@ -552,7 +547,7 @@ cciss_scsi_setup(int cntl_num)
 static void
 complete_scsi_command( CommandList_struct *cp, int timeout, __u32 tag)
 {
-       Scsi_Cmnd *cmd;
+       struct scsi_cmnd *cmd;
        ctlr_info_t *ctlr;
        u64bit addr64;
        ErrorInfo_struct *ei;
@@ -565,7 +560,7 @@ complete_scsi_command( CommandList_struct *cp, int timeout, __u32 tag)
                return;
        }
 
-       cmd = (Scsi_Cmnd *) cp->scsi_cmd;       
+       cmd = (struct scsi_cmnd *) cp->scsi_cmd;        
        ctlr = hba[cp->ctlr];
 
        /* undo the DMA mappings */
@@ -573,14 +568,14 @@ complete_scsi_command( CommandList_struct *cp, int timeout, __u32 tag)
        if (cmd->use_sg) {
                pci_unmap_sg(ctlr->pdev,
                        cmd->buffer, cmd->use_sg,
-                               scsi_to_pci_dma_dir(cmd->sc_data_direction)); 
+                               cmd->sc_data_direction); 
        }
        else if (cmd->request_bufflen) {
                addr64.val32.lower = cp->SG[0].Addr.lower;
                 addr64.val32.upper = cp->SG[0].Addr.upper;
                 pci_unmap_single(ctlr->pdev, (dma_addr_t) addr64.val,
                        cmd->request_bufflen, 
-                               scsi_to_pci_dma_dir(cmd->sc_data_direction));
+                               cmd->sc_data_direction);
        }
 
        cmd->result = (DID_OK << 16);           /* host byte */
@@ -696,14 +691,13 @@ static int
 cciss_scsi_detect(int ctlr)
 {
        struct Scsi_Host *sh;
+       int error;
 
        sh = scsi_host_alloc(&cciss_driver_template, sizeof(struct ctlr_info *));
        if (sh == NULL)
-               return 0;
-
+               goto fail;
        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;  
 
        ((struct cciss_scsi_adapter_data_t *) 
@@ -711,10 +705,16 @@ cciss_scsi_detect(int ctlr)
        sh->hostdata[0] = (unsigned long) hba[ctlr];
        sh->irq = hba[ctlr]->intr;
        sh->unique_id = sh->irq;
-       scsi_add_host(sh, &hba[ctlr]->pdev->dev); /* XXX handle failure */
+       error = scsi_add_host(sh, &hba[ctlr]->pdev->dev);
+       if (error)
+               goto fail_host_put;
        scsi_scan_host(sh);
-
        return 1;
+
+ fail_host_put:
+       scsi_host_put(sh);
+ fail:
+       return 0;
 }
 
 static void __exit cleanup_cciss_module(void);
@@ -783,9 +783,8 @@ cciss_scsi_do_simple_cmd(ctlr_info_t *c,
        cp->Request.Type.Direction = direction;
 
        /* Fill in the SG list and do dma mapping */
-       cciss_map_one(c->pdev, cp, 
-                       (unsigned char *) buf, bufsize,
-                       scsi_to_pci_dma_dir(SCSI_DATA_READ)); 
+       cciss_map_one(c->pdev, cp, (unsigned char *) buf,
+                       bufsize, DMA_FROM_DEVICE); 
 
        cp->waiting = &wait;
 
@@ -799,9 +798,7 @@ cciss_scsi_do_simple_cmd(ctlr_info_t *c,
        wait_for_completion(&wait);
 
        /* undo the dma mapping */
-       cciss_unmap_one(c->pdev, cp, bufsize,
-                               scsi_to_pci_dma_dir(SCSI_DATA_READ)); 
-
+       cciss_unmap_one(c->pdev, cp, bufsize, DMA_FROM_DEVICE);
        return(0);
 }
 
@@ -1180,14 +1177,14 @@ cciss_scsi_info(struct Scsi_Host *sa)
 }
 
 
-/* cciss_scatter_gather takes a Scsi_Cmnd, (cmd), and does the pci 
+/* cciss_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci 
    dma mapping  and fills in the scatter gather entries of the 
    cciss command, cp. */
 
 static void
 cciss_scatter_gather(struct pci_dev *pdev, 
                CommandList_struct *cp, 
-               Scsi_Cmnd *cmd)
+               struct scsi_cmnd *cmd)
 {
        unsigned int use_sg, nsegs=0, len;
        struct scatterlist *scatter = (struct scatterlist *) cmd->buffer;
@@ -1200,7 +1197,7 @@ cciss_scatter_gather(struct pci_dev *pdev,
                        addr64 = (__u64) pci_map_single(pdev, 
                                cmd->request_buffer, 
                                cmd->request_bufflen, 
-                               scsi_to_pci_dma_dir(cmd->sc_data_direction)); 
+                               cmd->sc_data_direction); 
        
                        cp->SG[0].Addr.lower = 
                          (__u32) (addr64 & (__u64) 0x00000000FFFFFFFF);
@@ -1213,7 +1210,7 @@ cciss_scatter_gather(struct pci_dev *pdev,
        else if (cmd->use_sg <= MAXSGENTRIES) { /* not too many addrs? */
 
                use_sg = pci_map_sg(pdev, cmd->buffer, cmd->use_sg, 
-                       scsi_to_pci_dma_dir(cmd->sc_data_direction));
+                       cmd->sc_data_direction);
 
                for (nsegs=0; nsegs < use_sg; nsegs++) {
                        addr64 = (__u64) sg_dma_address(&scatter[nsegs]);
@@ -1234,7 +1231,7 @@ cciss_scatter_gather(struct pci_dev *pdev,
 
 
 int 
-cciss_scsi_queue_command (Scsi_Cmnd *cmd, void (* done)(Scsi_Cmnd *))
+cciss_scsi_queue_command (struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
 {
        ctlr_info_t **c;
        int ctlr, rc;
@@ -1302,11 +1299,10 @@ cciss_scsi_queue_command (Scsi_Cmnd *cmd, void (* done)(Scsi_Cmnd *))
        cp->Request.Type.Attribute = ATTR_SIMPLE;
        switch(cmd->sc_data_direction)
        {
-         case SCSI_DATA_WRITE: cp->Request.Type.Direction = XFER_WRITE; break;
-         case SCSI_DATA_READ: cp->Request.Type.Direction = XFER_READ; break;
-         case SCSI_DATA_NONE: cp->Request.Type.Direction = XFER_NONE; break;
-
-         case SCSI_DATA_UNKNOWN:
+         case DMA_TO_DEVICE: cp->Request.Type.Direction = XFER_WRITE; break;
+         case DMA_FROM_DEVICE: cp->Request.Type.Direction = XFER_READ; break;
+         case DMA_NONE: cp->Request.Type.Direction = XFER_NONE; break;
+         case DMA_BIDIRECTIONAL:
                // This can happen if a buggy application does a scsi passthru
                // and sets both inlen and outlen to non-zero. ( see
                // ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )