};
/* File operations struct for character device */
-static struct file_operations twa_fops = {
+static const struct file_operations twa_fops = {
.owner = THIS_MODULE,
.ioctl = twa_chrdev_ioctl,
.open = twa_chrdev_open,
}
/* Allocate event info space */
- tw_dev->event_queue[0] = kmalloc(sizeof(TW_Event) * TW_Q_LENGTH, GFP_KERNEL);
+ tw_dev->event_queue[0] = kcalloc(TW_Q_LENGTH, sizeof(TW_Event), GFP_KERNEL);
if (!tw_dev->event_queue[0]) {
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x18, "Event info memory allocation failed");
goto out;
}
- memset(tw_dev->event_queue[0], 0, sizeof(TW_Event) * TW_Q_LENGTH);
for (i = 0; i < TW_Q_LENGTH; i++) {
tw_dev->event_queue[i] = (TW_Event *)((unsigned char *)tw_dev->event_queue[0] + (i * sizeof(TW_Event)));
wake_up(&tw_dev->ioctl_wqueue);
}
} else {
+ struct scsi_cmnd *cmd;
+
+ cmd = tw_dev->srb[request_id];
+
twa_scsiop_execute_scsi_complete(tw_dev, request_id);
/* If no error command was a success */
if (error == 0) {
- tw_dev->srb[request_id]->result = (DID_OK << 16);
+ cmd->result = (DID_OK << 16);
}
/* If error, command failed */
if (error == 1) {
/* Ask for a host reset */
- tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
+ cmd->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
}
/* Report residual bytes for single sgl */
- if ((tw_dev->srb[request_id]->use_sg <= 1) && (full_command_packet->command.newcommand.status == 0)) {
- if (full_command_packet->command.newcommand.sg_list[0].length < tw_dev->srb[request_id]->request_bufflen)
- tw_dev->srb[request_id]->resid = tw_dev->srb[request_id]->request_bufflen - full_command_packet->command.newcommand.sg_list[0].length;
+ if ((scsi_sg_count(cmd) <= 1) && (full_command_packet->command.newcommand.status == 0)) {
+ if (full_command_packet->command.newcommand.sg_list[0].length < scsi_bufflen(tw_dev->srb[request_id]))
+ scsi_set_resid(cmd, scsi_bufflen(cmd) - full_command_packet->command.newcommand.sg_list[0].length);
}
/* Now complete the io */
{
int use_sg;
struct scsi_cmnd *cmd = tw_dev->srb[request_id];
- struct pci_dev *pdev = tw_dev->tw_pci_dev;
- int retval = 0;
-
- if (cmd->use_sg == 0)
- goto out;
-
- 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)
+ return 0;
+ else if (use_sg < 0) {
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1c, "Failed to map scatter gather list");
- goto out;
+ return 0;
}
cmd->SCp.phase = TW_PHASE_SGLIST;
cmd->SCp.have_data_in = use_sg;
- retval = use_sg;
-out:
- return retval;
-} /* End twa_map_scsi_sg_data() */
-
-/* This function will perform a pci-dma map for a single buffer */
-static dma_addr_t twa_map_scsi_single_data(TW_Device_Extension *tw_dev, int request_id)
-{
- dma_addr_t mapping;
- struct scsi_cmnd *cmd = tw_dev->srb[request_id];
- struct pci_dev *pdev = tw_dev->tw_pci_dev;
- dma_addr_t retval = 0;
-
- if (cmd->request_bufflen == 0) {
- retval = 0;
- goto out;
- }
-
- mapping = pci_map_single(pdev, cmd->request_buffer, cmd->request_bufflen, DMA_BIDIRECTIONAL);
-
- if (mapping == 0) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1d, "Failed to map page");
- goto out;
- }
- cmd->SCp.phase = TW_PHASE_SINGLE;
- cmd->SCp.have_data_in = mapping;
- retval = mapping;
-out:
- return retval;
-} /* End twa_map_scsi_single_data() */
+ return use_sg;
+} /* End twa_map_scsi_sg_data() */
/* This function will poll for a response interrupt of a request */
static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds)
u32 num_sectors = 0x0;
int i, sg_count;
struct scsi_cmnd *srb = NULL;
- struct scatterlist *sglist = NULL;
- dma_addr_t buffaddr = 0x0;
+ struct scatterlist *sglist = NULL, *sg;
int retval = 1;
if (tw_dev->srb[request_id]) {
- if (tw_dev->srb[request_id]->request_buffer) {
- sglist = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer;
- }
srb = tw_dev->srb[request_id];
+ if (scsi_sglist(srb))
+ sglist = scsi_sglist(srb);
}
/* Initialize command packet */
if (!sglistarg) {
/* Map sglist from scsi layer to cmd packet */
- if (tw_dev->srb[request_id]->use_sg == 0) {
- if (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH) {
- command_packet->sg_list[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]);
- command_packet->sg_list[0].length = cpu_to_le32(TW_MIN_SGL_LENGTH);
- if (tw_dev->srb[request_id]->sc_data_direction == DMA_TO_DEVICE || tw_dev->srb[request_id]->sc_data_direction == DMA_BIDIRECTIONAL)
- memcpy(tw_dev->generic_buffer_virt[request_id], tw_dev->srb[request_id]->request_buffer, tw_dev->srb[request_id]->request_bufflen);
- } else {
- buffaddr = twa_map_scsi_single_data(tw_dev, request_id);
- if (buffaddr == 0)
- goto out;
-
- command_packet->sg_list[0].address = TW_CPU_TO_SGL(buffaddr);
- command_packet->sg_list[0].length = cpu_to_le32(tw_dev->srb[request_id]->request_bufflen);
- }
- command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN((srb->device->lun >> 4), 1));
- if (command_packet->sg_list[0].address & TW_CPU_TO_SGL(TW_ALIGNMENT_9000_SGL)) {
- TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2d, "Found unaligned address during execute scsi");
- goto out;
- }
- }
-
- if (tw_dev->srb[request_id]->use_sg > 0) {
- if ((tw_dev->srb[request_id]->use_sg == 1) && (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH)) {
- if (tw_dev->srb[request_id]->sc_data_direction == DMA_TO_DEVICE || tw_dev->srb[request_id]->sc_data_direction == DMA_BIDIRECTIONAL) {
- struct scatterlist *sg = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer;
+ if (scsi_sg_count(srb)) {
+ if ((scsi_sg_count(srb) == 1) &&
+ (scsi_bufflen(srb) < TW_MIN_SGL_LENGTH)) {
+ if (srb->sc_data_direction == DMA_TO_DEVICE || srb->sc_data_direction == DMA_BIDIRECTIONAL) {
+ struct scatterlist *sg = scsi_sglist(srb);
char *buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
memcpy(tw_dev->generic_buffer_virt[request_id], buf, sg->length);
kunmap_atomic(buf - sg->offset, KM_IRQ0);
if (sg_count == 0)
goto out;
- for (i = 0; i < sg_count; i++) {
- command_packet->sg_list[i].address = TW_CPU_TO_SGL(sg_dma_address(&sglist[i]));
- command_packet->sg_list[i].length = cpu_to_le32(sg_dma_len(&sglist[i]));
+ scsi_for_each_sg(srb, sg, sg_count, i) {
+ command_packet->sg_list[i].address = TW_CPU_TO_SGL(sg_dma_address(sg));
+ command_packet->sg_list[i].length = cpu_to_le32(sg_dma_len(sg));
if (command_packet->sg_list[i].address & TW_CPU_TO_SGL(TW_ALIGNMENT_9000_SGL)) {
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2e, "Found unaligned sgl address during execute scsi");
goto out;
}
}
}
- command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN((srb->device->lun >> 4), tw_dev->srb[request_id]->use_sg));
+ command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN((srb->device->lun >> 4), scsi_sg_count(tw_dev->srb[request_id])));
}
} else {
/* Internal cdb post */
/* Update SG statistics */
if (srb) {
- 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 completes an execute scsi operation */
static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id)
{
- if (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH &&
- (tw_dev->srb[request_id]->sc_data_direction == DMA_FROM_DEVICE ||
- tw_dev->srb[request_id]->sc_data_direction == DMA_BIDIRECTIONAL)) {
- if (tw_dev->srb[request_id]->use_sg == 0) {
- memcpy(tw_dev->srb[request_id]->request_buffer,
- tw_dev->generic_buffer_virt[request_id],
- tw_dev->srb[request_id]->request_bufflen);
- }
- if (tw_dev->srb[request_id]->use_sg == 1) {
- struct scatterlist *sg = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer;
+ struct scsi_cmnd *cmd = tw_dev->srb[request_id];
+
+ if (scsi_bufflen(cmd) < TW_MIN_SGL_LENGTH &&
+ (cmd->sc_data_direction == DMA_FROM_DEVICE ||
+ cmd->sc_data_direction == DMA_BIDIRECTIONAL)) {
+ if (scsi_sg_count(cmd) == 1) {
+ struct scatterlist *sg = scsi_sglist(tw_dev->srb[request_id]);
char *buf;
unsigned long flags = 0;
local_irq_save(flags);
static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id)
{
struct scsi_cmnd *cmd = tw_dev->srb[request_id];
- struct pci_dev *pdev = tw_dev->tw_pci_dev;
- switch(cmd->SCp.phase) {
- case TW_PHASE_SINGLE:
- pci_unmap_single(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 twa_unmap_scsi_data() */
/* scsi_host_template initializer */
projects / linux-2.6-omap-h63xx.git / blobdiff