[SCSI] iscsi class: user device_for_each_child instead of duplicating session list
[safe/jmp/linux-2.6] / drivers / scsi / megaraid.c
index 40ee07d..18551aa 100644 (file)
@@ -151,19 +151,19 @@ mega_setup_mailbox(adapter_t *adapter)
         */
        if( adapter->flag & BOARD_IOMAP ) {
 
-               outb_p(adapter->mbox_dma & 0xFF,
+               outb(adapter->mbox_dma & 0xFF,
                                adapter->host->io_port + MBOX_PORT0);
 
-               outb_p((adapter->mbox_dma >> 8) & 0xFF,
+               outb((adapter->mbox_dma >> 8) & 0xFF,
                                adapter->host->io_port + MBOX_PORT1);
 
-               outb_p((adapter->mbox_dma >> 16) & 0xFF,
+               outb((adapter->mbox_dma >> 16) & 0xFF,
                                adapter->host->io_port + MBOX_PORT2);
 
-               outb_p((adapter->mbox_dma >> 24) & 0xFF,
+               outb((adapter->mbox_dma >> 24) & 0xFF,
                                adapter->host->io_port + MBOX_PORT3);
 
-               outb_p(ENABLE_MBOX_BYTE,
+               outb(ENABLE_MBOX_BYTE,
                                adapter->host->io_port + ENABLE_MBOX_REGION);
 
                irq_ack(adapter);
@@ -523,10 +523,8 @@ mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
        /*
         * filter the internal and ioctl commands
         */
-       if((cmd->cmnd[0] == MEGA_INTERNAL_CMD)) {
-               return cmd->request_buffer;
-       }
-
+       if((cmd->cmnd[0] == MEGA_INTERNAL_CMD))
+               return (scb_t *)cmd->host_scribble;
 
        /*
         * We know what channels our logical drives are on - mega_find_card()
@@ -657,22 +655,14 @@ mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
 
                case MODE_SENSE: {
                        char *buf;
+                       struct scatterlist *sg;
 
-                       if (cmd->use_sg) {
-                               struct scatterlist *sg;
+                       sg = scsi_sglist(cmd);
+                       buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
 
-                               sg = (struct scatterlist *)cmd->request_buffer;
-                               buf = kmap_atomic(sg->page, KM_IRQ0) +
-                                       sg->offset;
-                       } else
-                               buf = cmd->request_buffer;
                        memset(buf, 0, cmd->cmnd[4]);
-                       if (cmd->use_sg) {
-                               struct scatterlist *sg;
+                       kunmap_atomic(buf - sg->offset, KM_IRQ0);
 
-                               sg = (struct scatterlist *)cmd->request_buffer;
-                               kunmap_atomic(buf - sg->offset, KM_IRQ0);
-                       }
                        cmd->result = (DID_OK << 16);
                        cmd->scsi_done(cmd);
                        return NULL;
@@ -1551,23 +1541,13 @@ mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
                islogical = adapter->logdrv_chan[cmd->device->channel];
                if( cmd->cmnd[0] == INQUIRY && !islogical ) {
 
-                       if( cmd->use_sg ) {
-                               sgl = (struct scatterlist *)
-                                       cmd->request_buffer;
-
-                               if( sgl->page ) {
-                                       c = *(unsigned char *)
-                                       page_address((&sgl[0])->page) +
-                                       (&sgl[0])->offset; 
-                               }
-                               else {
-                                       printk(KERN_WARNING
-                                               "megaraid: invalid sg.\n");
-                                       c = 0;
-                               }
-                       }
-                       else {
-                               c = *(u8 *)cmd->request_buffer;
+                       sgl = scsi_sglist(cmd);
+                       if( sg_page(sgl) ) {
+                               c = *(unsigned char *) sg_virt(&sgl[0]);
+                       } else {
+                               printk(KERN_WARNING
+                                      "megaraid: invalid sg.\n");
+                               c = 0;
                        }
 
                        if(IS_RAID_CH(adapter, cmd->device->channel) &&
@@ -1704,30 +1684,14 @@ mega_rundoneq (adapter_t *adapter)
 static void
 mega_free_scb(adapter_t *adapter, scb_t *scb)
 {
-       unsigned long length;
-
        switch( scb->dma_type ) {
 
        case MEGA_DMA_TYPE_NONE:
                break;
 
-       case MEGA_BULK_DATA:
-               if (scb->cmd->use_sg == 0)
-                       length = scb->cmd->request_bufflen;
-               else {
-                       struct scatterlist *sgl =
-                               (struct scatterlist *)scb->cmd->request_buffer;
-                       length = sgl->length;
-               }
-               pci_unmap_page(adapter->dev, scb->dma_h_bulkdata,
-                              length, scb->dma_direction);
-               break;
-
        case MEGA_SGLIST:
-               pci_unmap_sg(adapter->dev, scb->cmd->request_buffer,
-                       scb->cmd->use_sg, scb->dma_direction);
+               scsi_dma_unmap(scb->cmd);
                break;
-
        default:
                break;
        }
@@ -1767,80 +1731,41 @@ __mega_busywait_mbox (adapter_t *adapter)
 static int
 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
 {
-       struct scatterlist      *sgl;
-       struct page     *page;
-       unsigned long   offset;
-       unsigned int    length;
+       struct scatterlist *sg;
        Scsi_Cmnd       *cmd;
        int     sgcnt;
        int     idx;
 
        cmd = scb->cmd;
 
-       /* Scatter-gather not used */
-       if( cmd->use_sg == 0 || (cmd->use_sg == 1 && 
-                                !adapter->has_64bit_addr)) {
-
-               if (cmd->use_sg == 0) {
-                       page = virt_to_page(cmd->request_buffer);
-                       offset = offset_in_page(cmd->request_buffer);
-                       length = cmd->request_bufflen;
-               } else {
-                       sgl = (struct scatterlist *)cmd->request_buffer;
-                       page = sgl->page;
-                       offset = sgl->offset;
-                       length = sgl->length;
-               }
-
-               scb->dma_h_bulkdata = pci_map_page(adapter->dev,
-                                                 page, offset,
-                                                 length,
-                                                 scb->dma_direction);
-               scb->dma_type = MEGA_BULK_DATA;
-
-               /*
-                * We need to handle special 64-bit commands that need a
-                * minimum of 1 SG
-                */
-               if( adapter->has_64bit_addr ) {
-                       scb->sgl64[0].address = scb->dma_h_bulkdata;
-                       scb->sgl64[0].length = length;
-                       *buf = (u32)scb->sgl_dma_addr;
-                       *len = (u32)length;
-                       return 1;
-               }
-               else {
-                       *buf = (u32)scb->dma_h_bulkdata;
-                       *len = (u32)length;
-               }
-               return 0;
-       }
-
-       sgl = (struct scatterlist *)cmd->request_buffer;
-
        /*
         * Copy Scatter-Gather list info into controller structure.
         *
         * The number of sg elements returned must not exceed our limit
         */
-       sgcnt = pci_map_sg(adapter->dev, sgl, cmd->use_sg,
-                       scb->dma_direction);
+       sgcnt = scsi_dma_map(cmd);
 
        scb->dma_type = MEGA_SGLIST;
 
-       BUG_ON(sgcnt > adapter->sglen);
+       BUG_ON(sgcnt > adapter->sglen || sgcnt < 0);
 
        *len = 0;
 
-       for( idx = 0; idx < sgcnt; idx++, sgl++ ) {
+       if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) {
+               sg = scsi_sglist(cmd);
+               scb->dma_h_bulkdata = sg_dma_address(sg);
+               *buf = (u32)scb->dma_h_bulkdata;
+               *len = sg_dma_len(sg);
+               return 0;
+       }
 
-               if( adapter->has_64bit_addr ) {
-                       scb->sgl64[idx].address = sg_dma_address(sgl);
-                       *len += scb->sgl64[idx].length = sg_dma_len(sgl);
-               }
-               else {
-                       scb->sgl[idx].address = sg_dma_address(sgl);
-                       *len += scb->sgl[idx].length = sg_dma_len(sgl);
+       scsi_for_each_sg(cmd, sg, sgcnt, idx) {
+               if (adapter->has_64bit_addr) {
+                       scb->sgl64[idx].address = sg_dma_address(sg);
+                       *len += scb->sgl64[idx].length = sg_dma_len(sg);
+               else {
+                       scb->sgl[idx].address = sg_dma_address(sg);
+                       *len += scb->sgl[idx].length = sg_dma_len(sg);
                }
        }
 
@@ -4489,12 +4414,11 @@ mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
        scmd = &adapter->int_scmd;
        memset(scmd, 0, sizeof(Scsi_Cmnd));
 
-       sdev = kmalloc(sizeof(struct scsi_device), GFP_KERNEL);
-       memset(sdev, 0, sizeof(struct scsi_device));
+       sdev = kzalloc(sizeof(struct scsi_device), GFP_KERNEL);
        scmd->device = sdev;
 
        scmd->device->host = adapter->host;
-       scmd->request_buffer = (void *)scb;
+       scmd->host_scribble = (void *)scb;
        scmd->cmnd[0] = MEGA_INTERNAL_CMD;
 
        scb->state |= SCB_ACTIVE;
@@ -4964,7 +4888,7 @@ __megaraid_shutdown(adapter_t *adapter)
                mdelay(1000);
 }
 
-static void
+static void __devexit
 megaraid_remove_one(struct pci_dev *pdev)
 {
        struct Scsi_Host *host = pci_get_drvdata(pdev);
@@ -5072,7 +4996,7 @@ static int __init megaraid_init(void)
                max_mbox_busy_wait = MBOX_BUSY_WAIT;
 
 #ifdef CONFIG_PROC_FS
-       mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root);
+       mega_proc_dir_entry = proc_mkdir("megaraid", NULL);
        if (!mega_proc_dir_entry) {
                printk(KERN_WARNING
                                "megaraid: failed to create megaraid root\n");
@@ -5081,7 +5005,7 @@ static int __init megaraid_init(void)
        error = pci_register_driver(&megaraid_pci_driver);
        if (error) {
 #ifdef CONFIG_PROC_FS
-               remove_proc_entry("megaraid", &proc_root);
+               remove_proc_entry("megaraid", NULL);
 #endif
                return error;
        }
@@ -5111,7 +5035,7 @@ static void __exit megaraid_exit(void)
        pci_unregister_driver(&megaraid_pci_driver);
 
 #ifdef CONFIG_PROC_FS
-       remove_proc_entry("megaraid", &proc_root);
+       remove_proc_entry("megaraid", NULL);
 #endif
 }