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authorFinn Thain <fthain@telegraphics.com.au>2008-04-25 10:06:05 -0500
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-04-27 12:19:57 -0500
commit6fe07aaffbf086a0ce9134ef27ce4a8921ff5947 (patch)
tree3df572890c012b0a23662141fc4e538a36b66b10 /drivers/scsi/esp_scsi.h
parent6d9d63b9480e1c7ea41845646de803c2d3f0eae2 (diff)
downloadlinux-6fe07aaffbf086a0ce9134ef27ce4a8921ff5947.tar.bz2
[SCSI] m68k: new mac_esp scsi driver
Replace the mac_esp driver with a new one based on the esp_scsi core. For esp_scsi: add support for sync transfers for the PIO mode, add a new esp_driver_ops method to get the maximum dma transfer size (like the old NCR53C9x driver), and some cleanups. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/esp_scsi.h')
-rw-r--r--drivers/scsi/esp_scsi.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/scsi/esp_scsi.h b/drivers/scsi/esp_scsi.h
index 9367a88d3974..bb43a1388188 100644
--- a/drivers/scsi/esp_scsi.h
+++ b/drivers/scsi/esp_scsi.h
@@ -224,7 +224,7 @@
#define ESP_TIMEO_CONST 8192
#define ESP_NEG_DEFP(mhz, cfact) \
((ESP_BUS_TIMEOUT * ((mhz) / 1000)) / (8192 * (cfact)))
-#define ESP_MHZ_TO_CYCLE(mhertz) ((1000000000) / ((mhertz) / 1000))
+#define ESP_HZ_TO_CYCLE(hertz) ((1000000000) / ((hertz) / 1000))
#define ESP_TICK(ccf, cycle) ((7682 * (ccf) * (cycle) / 1000))
/* For slow to medium speed input clock rates we shoot for 5mb/s, but for high
@@ -368,6 +368,12 @@ struct esp_driver_ops {
*/
int (*irq_pending)(struct esp *esp);
+ /* Return the maximum allowable size of a DMA transfer for a
+ * given buffer.
+ */
+ u32 (*dma_length_limit)(struct esp *esp, u32 dma_addr,
+ u32 dma_len);
+
/* Reset the DMA engine entirely. On return, ESP interrupts
* should be enabled. Often the interrupt enabling is
* controlled in the DMA engine.
@@ -471,6 +477,7 @@ struct esp {
#define ESP_FLAG_DOING_SLOWCMD 0x00000004
#define ESP_FLAG_WIDE_CAPABLE 0x00000008
#define ESP_FLAG_QUICKIRQ_CHECK 0x00000010
+#define ESP_FLAG_DISABLE_SYNC 0x00000020
u8 select_state;
#define ESP_SELECT_NONE 0x00 /* Not selecting */