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Diffstat (limited to 'drivers/ieee1394/sbp2.h')
-rw-r--r--drivers/ieee1394/sbp2.h33
1 files changed, 11 insertions, 22 deletions
diff --git a/drivers/ieee1394/sbp2.h b/drivers/ieee1394/sbp2.h
index 875428b..c5036f1 100644
--- a/drivers/ieee1394/sbp2.h
+++ b/drivers/ieee1394/sbp2.h
@@ -139,13 +139,10 @@ struct sbp2_logout_orb {
u32 status_fifo_lo;
} __attribute__((packed));
-#define PAGE_TABLE_SET_SEGMENT_BASE_HI(v) ((v) & 0xffff)
-#define PAGE_TABLE_SET_SEGMENT_LENGTH(v) (((v) & 0xffff) << 16)
-
struct sbp2_unrestricted_page_table {
- u32 length_segment_base_hi;
- u32 segment_base_lo;
-} __attribute__((packed));
+ __be32 high;
+ __be32 low;
+};
#define RESP_STATUS_REQUEST_COMPLETE 0x0
#define RESP_STATUS_TRANSPORT_FAILURE 0x1
@@ -216,15 +213,18 @@ struct sbp2_status_block {
#define SBP2_UNIT_SPEC_ID_ENTRY 0x0000609e
#define SBP2_SW_VERSION_ENTRY 0x00010483
-
/*
- * SCSI specific definitions
+ * The default maximum s/g segment size of a FireWire controller is
+ * usually 0x10000, but SBP-2 only allows 0xffff. Since buffers have to
+ * be quadlet-aligned, we set the length limit to 0xffff & ~3.
*/
+#define SBP2_MAX_SEG_SIZE 0xfffc
-#define SBP2_MAX_SG_ELEMENT_LENGTH 0xf000
-/* There is no real limitation of the queue depth (i.e. length of the linked
+/*
+ * There is no real limitation of the queue depth (i.e. length of the linked
* list of command ORBs) at the target. The chosen depth is merely an
- * implementation detail of the sbp2 driver. */
+ * implementation detail of the sbp2 driver.
+ */
#define SBP2_MAX_CMDS 8
#define SBP2_SCSI_STATUS_GOOD 0x0
@@ -240,12 +240,6 @@ struct sbp2_status_block {
* Representations of commands and devices
*/
-enum sbp2_dma_types {
- CMD_DMA_NONE,
- CMD_DMA_PAGE,
- CMD_DMA_SINGLE
-};
-
/* Per SCSI command */
struct sbp2_command_info {
struct list_head list;
@@ -258,11 +252,6 @@ struct sbp2_command_info {
struct sbp2_unrestricted_page_table
scatter_gather_element[SG_ALL] __attribute__((aligned(8)));
dma_addr_t sge_dma;
- void *sge_buffer;
- dma_addr_t cmd_dma;
- enum sbp2_dma_types dma_type;
- unsigned long dma_size;
- enum dma_data_direction dma_dir;
};
/* Per FireWire host */
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