#define pci64_dma_build(hi,lo) \
((dma_addr_t)(((u64)(lo))|(((u64)(hi))<<32)))
-#include "qlogicfc.h"
+/*
+ * With the qlogic interface, every queue slot can hold a SCSI
+ * command with up to 2 scatter/gather entries. If we need more
+ * than 2 entries, continuation entries can be used that hold
+ * another 5 entries each. Unlike for other drivers, this means
+ * that the maximum number of scatter/gather entries we can
+ * support at any given time is a function of the number of queue
+ * slots available. That is, host->can_queue and host->sg_tablesize
+ * are dynamic and _not_ independent. This all works fine because
+ * requests are queued serially and the scatter/gather limit is
+ * determined for each queue request anew.
+ */
+
+#define DATASEGS_PER_COMMAND 2
+#define DATASEGS_PER_CONT 5
+
+#define QLOGICFC_REQ_QUEUE_LEN 255 /* must be power of two - 1 */
+#define QLOGICFC_MAX_SG(ql) (DATASEGS_PER_COMMAND + (((ql) > 0) ? DATASEGS_PER_CONT*((ql) - 1) : 0))
+#define QLOGICFC_CMD_PER_LUN 8
/* Configuration section **************************************************** */
}
-int isp2x00_detect(Scsi_Host_Template * tmpt)
+static int isp2x00_detect(Scsi_Host_Template * tmpt)
{
int hosts = 0;
unsigned long wait_time;
#endif /* ISP2x00_FABRIC */
-int isp2x00_release(struct Scsi_Host *host)
+static int isp2x00_release(struct Scsi_Host *host)
{
struct isp2x00_hostdata *hostdata;
dma_addr_t busaddr;
}
-const char *isp2x00_info(struct Scsi_Host *host)
+static const char *isp2x00_info(struct Scsi_Host *host)
{
static char buf[80];
struct isp2x00_hostdata *hostdata;
* interrupt handler may call this routine as part of
* request-completion handling).
*/
-int isp2x00_queuecommand(Scsi_Cmnd * Cmnd, void (*done) (Scsi_Cmnd *))
+static int isp2x00_queuecommand(Scsi_Cmnd * Cmnd, void (*done) (Scsi_Cmnd *))
{
int i, sg_count, n, num_free;
u_int in_ptr, out_ptr;
if (Cmnd->use_sg) {
sg = (struct scatterlist *) Cmnd->request_buffer;
- sg_count = pci_map_sg(hostdata->pci_dev, sg, Cmnd->use_sg, scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
+ sg_count = pci_map_sg(hostdata->pci_dev, sg, Cmnd->use_sg, Cmnd->sc_data_direction);
cmd->segment_cnt = cpu_to_le16(sg_count);
ds = cmd->dataseg;
/* fill in first two sg entries: */
dma_addr_t busaddr = pci_map_page(hostdata->pci_dev,
page, offset,
Cmnd->request_bufflen,
- scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
+ Cmnd->sc_data_direction);
Cmnd->SCp.dma_handle = busaddr;
cmd->dataseg[0].d_base = cpu_to_le32(pci64_dma_lo32(busaddr));
cmd->segment_cnt = cpu_to_le16(1); /* Shouldn't this be 0? */
}
- if (Cmnd->sc_data_direction == SCSI_DATA_WRITE)
+ if (Cmnd->sc_data_direction == DMA_TO_DEVICE)
cmd->control_flags = cpu_to_le16(CFLAG_WRITE);
else
cmd->control_flags = cpu_to_le16(CFLAG_READ);
pci_unmap_sg(hostdata->pci_dev,
(struct scatterlist *)Cmnd->buffer,
Cmnd->use_sg,
- scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
+ Cmnd->sc_data_direction);
else if (Cmnd->request_bufflen &&
Cmnd->sc_data_direction != PCI_DMA_NONE) {
pci_unmap_page(hostdata->pci_dev,
Cmnd->SCp.dma_handle,
Cmnd->request_bufflen,
- scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
+ Cmnd->sc_data_direction);
}
hostdata->handle_ptrs[i]->result = DID_SOFT_ERROR << 16;
pci_unmap_sg(hostdata->pci_dev,
(struct scatterlist *)Cmnd->buffer,
Cmnd->use_sg,
- scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
+ Cmnd->sc_data_direction);
else if (Cmnd->request_bufflen &&
Cmnd->sc_data_direction != PCI_DMA_NONE)
pci_unmap_page(hostdata->pci_dev,
Cmnd->SCp.dma_handle,
Cmnd->request_bufflen,
- scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
+ Cmnd->sc_data_direction);
Cmnd->result = 0x0;
(*Cmnd->scsi_done) (Cmnd);
} else
if (Cmnd->use_sg)
pci_unmap_sg(hostdata->pci_dev,
(struct scatterlist *)Cmnd->buffer, Cmnd->use_sg,
- scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
+ Cmnd->sc_data_direction);
else if (Cmnd->request_bufflen && Cmnd->sc_data_direction != PCI_DMA_NONE)
pci_unmap_page(hostdata->pci_dev,
Cmnd->SCp.dma_handle,
Cmnd->request_bufflen,
- scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
+ Cmnd->sc_data_direction);
/*
* if any of the following are true we do not
}
-int isp2x00_abort(Scsi_Cmnd * Cmnd)
+static int isp2x00_abort(Scsi_Cmnd * Cmnd)
{
u_short param[8];
int i;
}
-int isp2x00_reset(Scsi_Cmnd * Cmnd, unsigned int reset_flags)
-{
- u_short param[8];
- struct Scsi_Host *host;
- struct isp2x00_hostdata *hostdata;
- int return_status = SCSI_RESET_SUCCESS;
-
- ENTER("isp2x00_reset");
-
- host = Cmnd->device->host;
- hostdata = (struct isp2x00_hostdata *) host->hostdata;
- param[0] = MBOX_BUS_RESET;
- param[1] = 3;
-
- isp2x00_disable_irqs(host);
-
- isp2x00_mbox_command(host, param);
-
- if (param[0] != MBOX_COMMAND_COMPLETE) {
- printk("qlogicfc%d : scsi bus reset failure: %x\n", hostdata->host_id, param[0]);
- return_status = SCSI_RESET_ERROR;
- }
- isp2x00_enable_irqs(host);
-
- LEAVE("isp2x00_reset");
-
- return return_status;
-}
-
-
-int isp2x00_biosparam(struct scsi_device *sdev, struct block_device *n,
+static int isp2x00_biosparam(struct scsi_device *sdev, struct block_device *n,
sector_t capacity, int ip[])
{
int size = capacity;
git://git.onelab.eu / linux-2.6.git / blobdiff