} /* End tw_chrdev_open() */
/* File operations struct for character device */
-static struct file_operations tw_fops = {
+static const struct file_operations tw_fops = {
.owner = THIS_MODULE,
.ioctl = tw_chrdev_ioctl,
.open = tw_chrdev_open,
int use_sg;
dprintk(KERN_WARNING "3w-xxxx: tw_map_scsi_sg_data()\n");
-
- if (cmd->use_sg == 0)
- return 0;
- use_sg = pci_map_sg(pdev, cmd->request_buffer, cmd->use_sg, DMA_BIDIRECTIONAL);
-
- if (use_sg == 0) {
+ use_sg = scsi_dma_map(cmd);
+ if (use_sg < 0) {
printk(KERN_WARNING "3w-xxxx: tw_map_scsi_sg_data(): pci_map_sg() failed.\n");
return 0;
}
cmd->SCp.phase = TW_PHASE_SGLIST;
cmd->SCp.have_data_in = use_sg;
-
+
return use_sg;
} /* End tw_map_scsi_sg_data() */
-static u32 tw_map_scsi_single_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
-{
- dma_addr_t mapping;
-
- dprintk(KERN_WARNING "3w-xxxx: tw_map_scsi_single_data()\n");
-
- if (cmd->request_bufflen == 0)
- return 0;
-
- mapping = pci_map_page(pdev, virt_to_page(cmd->request_buffer), offset_in_page(cmd->request_buffer), cmd->request_bufflen, DMA_BIDIRECTIONAL);
-
- if (mapping == 0) {
- printk(KERN_WARNING "3w-xxxx: tw_map_scsi_single_data(): pci_map_page() failed.\n");
- return 0;
- }
-
- cmd->SCp.phase = TW_PHASE_SINGLE;
- cmd->SCp.have_data_in = mapping;
-
- return mapping;
-} /* End tw_map_scsi_single_data() */
-
static void tw_unmap_scsi_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
{
dprintk(KERN_WARNING "3w-xxxx: tw_unmap_scsi_data()\n");
- switch(cmd->SCp.phase) {
- case TW_PHASE_SINGLE:
- pci_unmap_page(pdev, cmd->SCp.have_data_in, cmd->request_bufflen, DMA_BIDIRECTIONAL);
- break;
- case TW_PHASE_SGLIST:
- pci_unmap_sg(pdev, cmd->request_buffer, cmd->use_sg, DMA_BIDIRECTIONAL);
- break;
- }
+ scsi_dma_unmap(cmd);
} /* End tw_unmap_scsi_data() */
/* This function will reset a device extension */
void *data, unsigned int len)
{
struct scsi_cmnd *cmd = tw_dev->srb[request_id];
- void *buf;
- unsigned int transfer_len;
- unsigned long flags = 0;
-
- if (cmd->use_sg) {
- struct scatterlist *sg =
- (struct scatterlist *)cmd->request_buffer;
- local_irq_save(flags);
- buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
- transfer_len = min(sg->length, len);
- } else {
- buf = cmd->request_buffer;
- transfer_len = min(cmd->request_bufflen, len);
- }
-
- memcpy(buf, data, transfer_len);
-
- if (cmd->use_sg) {
- struct scatterlist *sg;
+ unsigned long flags;
- sg = (struct scatterlist *)cmd->request_buffer;
- kunmap_atomic(buf - sg->offset, KM_IRQ0);
- local_irq_restore(flags);
- }
+ local_irq_save(flags);
+ scsi_sg_copy_from_buffer(cmd, data, len);
+ local_irq_restore(flags);
}
/* This function is called by the isr to complete an inquiry command */
{
TW_Command *command_packet;
unsigned long command_que_value;
- u32 lba = 0x0, num_sectors = 0x0, buffaddr = 0x0;
+ u32 lba = 0x0, num_sectors = 0x0;
int i, use_sg;
struct scsi_cmnd *srb;
- struct scatterlist *sglist;
+ struct scatterlist *sglist, *sg;
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write()\n");
- if (tw_dev->srb[request_id]->request_buffer == NULL) {
+ srb = tw_dev->srb[request_id];
+
+ sglist = scsi_sglist(srb);
+ if (!sglist) {
printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Request buffer NULL.\n");
return 1;
}
- sglist = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer;
- srb = tw_dev->srb[request_id];
/* Initialize command packet */
command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
command_packet->byte8.io.lba = lba;
command_packet->byte6.block_count = num_sectors;
- /* Do this if there are no sg list entries */
- if (tw_dev->srb[request_id]->use_sg == 0) {
- dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): SG = 0\n");
- buffaddr = tw_map_scsi_single_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]);
- if (buffaddr == 0)
- return 1;
+ use_sg = tw_map_scsi_sg_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]);
+ if (!use_sg)
+ return 1;
- command_packet->byte8.io.sgl[0].address = buffaddr;
- command_packet->byte8.io.sgl[0].length = tw_dev->srb[request_id]->request_bufflen;
+ scsi_for_each_sg(tw_dev->srb[request_id], sg, use_sg, i) {
+ command_packet->byte8.io.sgl[i].address = sg_dma_address(sg);
+ command_packet->byte8.io.sgl[i].length = sg_dma_len(sg);
command_packet->size+=2;
}
- /* Do this if we have multiple sg list entries */
- if (tw_dev->srb[request_id]->use_sg > 0) {
- use_sg = tw_map_scsi_sg_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]);
- if (use_sg == 0)
- return 1;
-
- for (i=0;i<use_sg; i++) {
- command_packet->byte8.io.sgl[i].address = sg_dma_address(&sglist[i]);
- command_packet->byte8.io.sgl[i].length = sg_dma_len(&sglist[i]);
- command_packet->size+=2;
- }
- }
-
/* Update SG statistics */
- tw_dev->sgl_entries = tw_dev->srb[request_id]->use_sg;
+ tw_dev->sgl_entries = scsi_sg_count(tw_dev->srb[request_id]);
if (tw_dev->sgl_entries > tw_dev->max_sgl_entries)
tw_dev->max_sgl_entries = tw_dev->sgl_entries;
/* This function will handle the request sense scsi command */
static int tw_scsiop_request_sense(TW_Device_Extension *tw_dev, int request_id)
{
+ char request_buffer[18];
+
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_request_sense()\n");
- /* For now we just zero the request buffer */
- memset(tw_dev->srb[request_id]->request_buffer, 0, tw_dev->srb[request_id]->request_bufflen);
+ memset(request_buffer, 0, sizeof(request_buffer));
+ request_buffer[0] = 0x70; /* Immediate fixed format */
+ request_buffer[7] = 10; /* minimum size per SPC: 18 bytes */
+ /* leave all other fields zero, giving effectively NO_SENSE return */
+ tw_transfer_internal(tw_dev, request_id, request_buffer,
+ sizeof(request_buffer));
+
tw_dev->state[request_id] = TW_S_COMPLETED;
tw_state_request_finish(tw_dev, request_id);
}
tw_dev = (TW_Device_Extension *)host->hostdata;
- memset(tw_dev, 0, sizeof(TW_Device_Extension));
-
/* Save values to device extension */
tw_dev->host = host;
tw_dev->tw_pci_dev = pdev;
projects / linux-2.6-omap-h63xx.git / blobdiff