Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
[linux-2.6.git] / drivers / scsi / nsp32.c
index 3e9765f0281d948669347b1ef6e309ce36122adb..7fed35372150afe68d619d61d4faa4a2a4588437 100644 (file)
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_ioctl.h>
 
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
-# include <linux/blk.h>
-#endif
-
 #include "nsp32.h"
 
 
@@ -199,17 +195,9 @@ static int  __init    init_nsp32  (void);
 static void __exit    exit_nsp32  (void);
 
 /* struct struct scsi_host_template */
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
 static int         nsp32_proc_info   (struct Scsi_Host *, char *, char **, off_t, int, int);
-#else
-static int         nsp32_proc_info   (char *, char **, off_t, int, int, int);
-#endif
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
 static int         nsp32_detect      (struct pci_dev *pdev);
-#else
-static int         nsp32_detect      (struct scsi_host_template *);
-#endif
 static int         nsp32_queuecommand(struct scsi_cmnd *,
                void (*done)(struct scsi_cmnd *));
 static const char *nsp32_info        (struct Scsi_Host *);
@@ -296,15 +284,7 @@ static struct scsi_host_template nsp32_template = {
        .eh_abort_handler               = nsp32_eh_abort,
        .eh_bus_reset_handler           = nsp32_eh_bus_reset,
        .eh_host_reset_handler          = nsp32_eh_host_reset,
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,74))
-       .detect                         = nsp32_detect,
-       .release                        = nsp32_release,
-#endif
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,2))
-       .use_new_eh_code                = 1,
-#else
 /*     .highmem_io                     = 1, */
-#endif
 };
 
 #include "nsp32_io.h"
@@ -739,7 +719,7 @@ static int nsp32_selection_autoscsi(struct scsi_cmnd *SCpnt)
        command = 0;
        command |= (TRANSFER_GO | ALL_COUNTER_CLR);
        if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
-               if (SCpnt->request_bufflen > 0) {
+               if (scsi_bufflen(SCpnt) > 0) {
                        command |= BM_START;
                }
        } else if (data->trans_method & NSP32_TRANSFER_MMIO) {
@@ -888,31 +868,28 @@ static int nsp32_reselection(struct scsi_cmnd *SCpnt, unsigned char newlun)
 static int nsp32_setup_sg_table(struct scsi_cmnd *SCpnt)
 {
        nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
-       struct scatterlist   *sgl;
+       struct scatterlist *sg;
        nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt;
        int num, i;
        u32_le l;
 
-       if (SCpnt->request_bufflen == 0) {
-               return TRUE;
-       }
-
        if (sgt == NULL) {
                nsp32_dbg(NSP32_DEBUG_SGLIST, "SGT == null");
                return FALSE;
        }
 
-       if (SCpnt->use_sg) {
-               sgl = (struct scatterlist *)SCpnt->request_buffer;
-               num = pci_map_sg(data->Pci, sgl, SCpnt->use_sg,
-                                SCpnt->sc_data_direction);
-               for (i = 0; i < num; i++) {
+       num = scsi_dma_map(SCpnt);
+       if (!num)
+               return TRUE;
+       else if (num < 0)
+               return FALSE;
+       else {
+               scsi_for_each_sg(SCpnt, sg, num, i) {
                        /*
                         * Build nsp32_sglist, substitute sg dma addresses.
                         */
-                       sgt[i].addr = cpu_to_le32(sg_dma_address(sgl));
-                       sgt[i].len  = cpu_to_le32(sg_dma_len(sgl));
-                       sgl++;
+                       sgt[i].addr = cpu_to_le32(sg_dma_address(sg));
+                       sgt[i].len  = cpu_to_le32(sg_dma_len(sg));
 
                        if (le32_to_cpu(sgt[i].len) > 0x10000) {
                                nsp32_msg(KERN_ERR,
@@ -929,23 +906,6 @@ static int nsp32_setup_sg_table(struct scsi_cmnd *SCpnt)
                /* set end mark */
                l = le32_to_cpu(sgt[num-1].len);
                sgt[num-1].len = cpu_to_le32(l | SGTEND);
-
-       } else {
-               SCpnt->SCp.have_data_in = pci_map_single(data->Pci,
-                       SCpnt->request_buffer, SCpnt->request_bufflen,
-                       SCpnt->sc_data_direction);
-
-               sgt[0].addr = cpu_to_le32(SCpnt->SCp.have_data_in);
-               sgt[0].len  = cpu_to_le32(SCpnt->request_bufflen | SGTEND); /* set end mark */
-
-               if (SCpnt->request_bufflen > 0x10000) {
-                       nsp32_msg(KERN_ERR,
-                                 "can't transfer over 64KB at a time, size=0x%lx", SCpnt->request_bufflen);
-                       return FALSE;
-               }
-               nsp32_dbg(NSP32_DEBUG_SGLIST, "single : addr 0x%lx len=0x%lx",
-                         le32_to_cpu(sgt[0].addr),
-                         le32_to_cpu(sgt[0].len ));
        }
 
        return TRUE;
@@ -962,7 +922,7 @@ static int nsp32_queuecommand(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_
                  "enter. target: 0x%x LUN: 0x%x cmnd: 0x%x cmndlen: 0x%x "
                  "use_sg: 0x%x reqbuf: 0x%lx reqlen: 0x%x",
                  SCpnt->device->id, SCpnt->device->lun, SCpnt->cmnd[0], SCpnt->cmd_len,
-                 SCpnt->use_sg, SCpnt->request_buffer, SCpnt->request_bufflen);
+                 scsi_sg_count(SCpnt), scsi_sglist(SCpnt), scsi_bufflen(SCpnt));
 
        if (data->CurrentSC != NULL) {
                nsp32_msg(KERN_ERR, "Currentsc != NULL. Cancel this command request");
@@ -994,10 +954,10 @@ static int nsp32_queuecommand(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_
        data->CurrentSC      = SCpnt;
        SCpnt->SCp.Status    = CHECK_CONDITION;
        SCpnt->SCp.Message   = 0;
-       SCpnt->resid         = SCpnt->request_bufflen;
+       scsi_set_resid(SCpnt, scsi_bufflen(SCpnt));
 
-       SCpnt->SCp.ptr              = (char *) SCpnt->request_buffer;
-       SCpnt->SCp.this_residual    = SCpnt->request_bufflen;
+       SCpnt->SCp.ptr              = (char *)scsi_sglist(SCpnt);
+       SCpnt->SCp.this_residual    = scsi_bufflen(SCpnt);
        SCpnt->SCp.buffer           = NULL;
        SCpnt->SCp.buffers_residual = 0;
 
@@ -1210,13 +1170,9 @@ static irqreturn_t do_nsp32_isr(int irq, void *dev_id)
        unsigned long flags;
        int ret;
        int handled = 0;
-
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
        struct Scsi_Host *host = data->Host;
+
        spin_lock_irqsave(host->host_lock, flags);
-#else
-       spin_lock_irqsave(&io_request_lock, flags);
-#endif
 
        /*
         * IRQ check, then enable IRQ mask
@@ -1312,7 +1268,7 @@ static irqreturn_t do_nsp32_isr(int irq, void *dev_id)
                }
 
                if ((auto_stat & DATA_IN_PHASE) &&
-                   (SCpnt->resid > 0) &&
+                   (scsi_get_resid(SCpnt) > 0) &&
                    ((nsp32_read2(base, FIFO_REST_CNT) & FIFO_REST_MASK) != 0)) {
                        printk( "auto+fifo\n");
                        //nsp32_pio_read(SCpnt);
@@ -1333,7 +1289,7 @@ static irqreturn_t do_nsp32_isr(int irq, void *dev_id)
                        nsp32_dbg(NSP32_DEBUG_INTR, "SSACK=0x%lx", 
                                    nsp32_read4(base, SAVED_SACK_CNT));
 
-                       SCpnt->resid = 0; /* all data transfered! */
+                       scsi_set_resid(SCpnt, 0); /* all data transfered! */
                }
 
                /*
@@ -1480,11 +1436,7 @@ static irqreturn_t do_nsp32_isr(int irq, void *dev_id)
        nsp32_write2(base, IRQ_CONTROL, 0);
 
  out2:
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
        spin_unlock_irqrestore(host->host_lock, flags);
-#else
-       spin_unlock_irqrestore(&io_request_lock, flags);
-#endif
 
        nsp32_dbg(NSP32_DEBUG_INTR, "exit");
 
@@ -1499,28 +1451,15 @@ static irqreturn_t do_nsp32_isr(int irq, void *dev_id)
                        nsp32_dbg(NSP32_DEBUG_PROC, "buffer=0x%p pos=0x%p length=%d %d\n", buffer, pos, length,  length - (pos - buffer));\
                } \
        } while(0)
-static int nsp32_proc_info(
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73)) 
-       struct Scsi_Host *host,
-#endif
-       char             *buffer,
-       char            **start,
-       off_t             offset,
-       int               length,
-#if !(LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73)) 
-       int               hostno,
-#endif
-       int               inout)
+
+static int nsp32_proc_info(struct Scsi_Host *host, char *buffer, char **start,
+                          off_t offset, int length, int inout)
 {
        char             *pos = buffer;
        int               thislength;
        unsigned long     flags;
        nsp32_hw_data    *data;
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73)) 
        int               hostno;
-#else
-       struct Scsi_Host *host;
-#endif
        unsigned int      base;
        unsigned char     mode_reg;
        int               id, speed;
@@ -1531,15 +1470,7 @@ static int nsp32_proc_info(
                return -EINVAL;
        }
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73)) 
        hostno = host->host_no;
-#else
-       /* search this HBA host */
-       host = scsi_host_hn_get(hostno);
-       if (host == NULL) {
-               return -ESRCH;
-       }
-#endif
        data = (nsp32_hw_data *)host->hostdata;
        base = host->io_port;
 
@@ -1626,25 +1557,8 @@ static void nsp32_scsi_done(struct scsi_cmnd *SCpnt)
        nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
        unsigned int   base = SCpnt->device->host->io_port;
 
-       /*
-        * unmap pci
-        */
-       if (SCpnt->request_bufflen == 0) {
-               goto skip;
-       }
+       scsi_dma_unmap(SCpnt);
 
-       if (SCpnt->use_sg) {
-               pci_unmap_sg(data->Pci,
-                            (struct scatterlist *)SCpnt->request_buffer,
-                            SCpnt->use_sg, SCpnt->sc_data_direction);
-       } else {
-               pci_unmap_single(data->Pci,
-                                (u32)SCpnt->SCp.have_data_in,
-                                SCpnt->request_bufflen,
-                                SCpnt->sc_data_direction);
-       }
-
- skip:
        /*
         * clear TRANSFERCONTROL_BM_START
         */
@@ -1800,7 +1714,7 @@ static int nsp32_busfree_occur(struct scsi_cmnd *SCpnt, unsigned short execph)
                SCpnt->SCp.Message = 0;
                nsp32_dbg(NSP32_DEBUG_BUSFREE, 
                          "normal end stat=0x%x resid=0x%x\n",
-                         SCpnt->SCp.Status, SCpnt->resid);
+                         SCpnt->SCp.Status, scsi_get_resid(SCpnt));
                SCpnt->result = (DID_OK             << 16) |
                                (SCpnt->SCp.Message <<  8) |
                                (SCpnt->SCp.Status  <<  0);
@@ -1844,7 +1758,7 @@ static void nsp32_adjust_busfree(struct scsi_cmnd *SCpnt, unsigned int s_sacklen
        unsigned int          restlen, sentlen;
        u32_le                len, addr;
 
-       nsp32_dbg(NSP32_DEBUG_SGLIST, "old resid=0x%x", SCpnt->resid);
+       nsp32_dbg(NSP32_DEBUG_SGLIST, "old resid=0x%x", scsi_get_resid(SCpnt));
 
        /* adjust saved SACK count with 4 byte start address boundary */
        s_sacklen -= le32_to_cpu(sgt[old_entry].addr) & 3;
@@ -1888,12 +1802,12 @@ static void nsp32_adjust_busfree(struct scsi_cmnd *SCpnt, unsigned int s_sacklen
        return;
 
  last:
-       if (SCpnt->resid < sentlen) {
+       if (scsi_get_resid(SCpnt) < sentlen) {
                nsp32_msg(KERN_ERR, "resid underflow");
        }
 
-       SCpnt->resid -= sentlen;
-       nsp32_dbg(NSP32_DEBUG_SGLIST, "new resid=0x%x", SCpnt->resid);
+       scsi_set_resid(SCpnt, scsi_get_resid(SCpnt) - sentlen);
+       nsp32_dbg(NSP32_DEBUG_SGLIST, "new resid=0x%x", scsi_get_resid(SCpnt));
 
        /* update hostdata and lun */
 
@@ -2022,7 +1936,7 @@ static void nsp32_restart_autoscsi(struct scsi_cmnd *SCpnt, unsigned short comma
        transfer = 0;
        transfer |= (TRANSFER_GO | ALL_COUNTER_CLR);
        if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
-               if (SCpnt->request_bufflen > 0) {
+               if (scsi_bufflen(SCpnt) > 0) {
                        transfer |= BM_START;
                }
        } else if (data->trans_method & NSP32_TRANSFER_MMIO) {
@@ -2674,17 +2588,7 @@ static void nsp32_sack_negate(nsp32_hw_data *data)
  *     0x900-0xbff: (map same 0x800-0x8ff I/O port image repeatedly)
  *     0xc00-0xfff: CardBus status registers
  */
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
-#define DETECT_OK 0
-#define DETECT_NG 1
-#define PCIDEV    pdev
 static int nsp32_detect(struct pci_dev *pdev)
-#else
-#define DETECT_OK 1
-#define DETECT_NG 0
-#define PCIDEV    (data->Pci)
-static int nsp32_detect(struct scsi_host_template *sht)
-#endif
 {
        struct Scsi_Host *host; /* registered host structure */
        struct resource  *res;
@@ -2697,11 +2601,7 @@ static int nsp32_detect(struct scsi_host_template *sht)
        /*
         * register this HBA as SCSI device
         */
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
        host = scsi_host_alloc(&nsp32_template, sizeof(nsp32_hw_data));
-#else
-       host = scsi_register(sht, sizeof(nsp32_hw_data));
-#endif
        if (host == NULL) {
                nsp32_msg (KERN_ERR, "failed to scsi register");
                goto err;
@@ -2719,9 +2619,6 @@ static int nsp32_detect(struct scsi_host_template *sht)
        host->unique_id = data->BaseAddress;
        host->n_io_port = data->NumAddress;
        host->base      = (unsigned long)data->MmioAddress;
-#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,5,63))
-       scsi_set_pci_device(host, PCIDEV);
-#endif
 
        data->Host      = host;
        spin_lock_init(&(data->Lock));
@@ -2776,7 +2673,7 @@ static int nsp32_detect(struct scsi_host_template *sht)
        /*
         * setup DMA 
         */
-       if (pci_set_dma_mask(PCIDEV, DMA_32BIT_MASK) != 0) {
+       if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0) {
                nsp32_msg (KERN_ERR, "failed to set PCI DMA mask");
                goto scsi_unregister;
        }
@@ -2784,7 +2681,7 @@ static int nsp32_detect(struct scsi_host_template *sht)
        /*
         * allocate autoparam DMA resource.
         */
-       data->autoparam = pci_alloc_consistent(PCIDEV, sizeof(nsp32_autoparam), &(data->auto_paddr));
+       data->autoparam = pci_alloc_consistent(pdev, sizeof(nsp32_autoparam), &(data->auto_paddr));
        if (data->autoparam == NULL) {
                nsp32_msg(KERN_ERR, "failed to allocate DMA memory");
                goto scsi_unregister;
@@ -2793,7 +2690,7 @@ static int nsp32_detect(struct scsi_host_template *sht)
        /*
         * allocate scatter-gather DMA resource.
         */
-       data->sg_list = pci_alloc_consistent(PCIDEV, NSP32_SG_TABLE_SIZE,
+       data->sg_list = pci_alloc_consistent(pdev, NSP32_SG_TABLE_SIZE,
                                             &(data->sg_paddr));
        if (data->sg_list == NULL) {
                nsp32_msg(KERN_ERR, "failed to allocate DMA memory");
@@ -2883,16 +2780,14 @@ static int nsp32_detect(struct scsi_host_template *sht)
                goto free_irq;
         }
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
-       ret = scsi_add_host(host, &PCIDEV->dev);
+       ret = scsi_add_host(host, &pdev->dev);
        if (ret) {
                nsp32_msg(KERN_ERR, "failed to add scsi host");
                goto free_region;
        }
        scsi_scan_host(host);
-#endif
-       pci_set_drvdata(PCIDEV, host);
-       return DETECT_OK;
+       pci_set_drvdata(pdev, host);
+       return 0;
 
  free_region:
        release_region(host->io_port, host->n_io_port);
@@ -2901,22 +2796,19 @@ static int nsp32_detect(struct scsi_host_template *sht)
        free_irq(host->irq, data);
 
  free_sg_list:
-       pci_free_consistent(PCIDEV, NSP32_SG_TABLE_SIZE,
+       pci_free_consistent(pdev, NSP32_SG_TABLE_SIZE,
                            data->sg_list, data->sg_paddr);
 
  free_autoparam:
-       pci_free_consistent(PCIDEV, sizeof(nsp32_autoparam),
+       pci_free_consistent(pdev, sizeof(nsp32_autoparam),
                            data->autoparam, data->auto_paddr);
        
  scsi_unregister:
        scsi_host_put(host);
 
  err:
-       return DETECT_NG;
+       return 1;
 }
-#undef DETECT_OK
-#undef DETECT_NG
-#undef PCIDEV
 
 static int nsp32_release(struct Scsi_Host *host)
 {
@@ -3516,11 +3408,7 @@ static int __devinit nsp32_probe(struct pci_dev *pdev, const struct pci_device_i
 
        pci_set_master(pdev);
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
        ret = nsp32_detect(pdev);
-#else
-       ret = scsi_register_host(&nsp32_template);
-#endif
 
        nsp32_msg(KERN_INFO, "irq: %i mmio: %p+0x%lx slot: %s model: %s",
                  pdev->irq,
@@ -3535,25 +3423,17 @@ static int __devinit nsp32_probe(struct pci_dev *pdev, const struct pci_device_i
 
 static void __devexit nsp32_remove(struct pci_dev *pdev)
 {
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
        struct Scsi_Host *host = pci_get_drvdata(pdev);
-#endif
 
        nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
         scsi_remove_host(host);
 
        nsp32_release(host);
 
        scsi_host_put(host);
-#else
-       scsi_unregister_host(&nsp32_template);  
-#endif
 }
 
-
-
 static struct pci_driver nsp32_driver = {
        .name           = "nsp32",
        .id_table       = nsp32_pci_table,