ide: add support for CFA specified transfer modes (take 3)
Add support for the CompactFlash specific PIO modes 5/6 and MWDMA modes 3/4.
Since there were no PIO5 capable hard drives produced and one would also need
66 MHz IDE clock to actually get the difference WRT the address setup timings
programmed, I decided to simply replace the old non-standard PIO mode 5 timings
with the CFA specified ones.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: stf_xl@wp.pl
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-timings.c b/drivers/ide/ide-timings.c
index 81f527a..001a563 100644
--- a/drivers/ide/ide-timings.c
+++ b/drivers/ide/ide-timings.c
@@ -43,6 +43,8 @@
{ XFER_UDMA_1, 0, 0, 0, 0, 0, 0, 0, 80 },
{ XFER_UDMA_0, 0, 0, 0, 0, 0, 0, 0, 120 },
+ { XFER_MW_DMA_4, 25, 0, 0, 0, 55, 20, 80, 0 },
+ { XFER_MW_DMA_3, 25, 0, 0, 0, 65, 25, 100, 0 },
{ XFER_MW_DMA_2, 25, 0, 0, 0, 70, 25, 120, 0 },
{ XFER_MW_DMA_1, 45, 0, 0, 0, 80, 50, 150, 0 },
{ XFER_MW_DMA_0, 60, 0, 0, 0, 215, 215, 480, 0 },
@@ -51,7 +53,8 @@
{ XFER_SW_DMA_1, 90, 0, 0, 0, 240, 240, 480, 0 },
{ XFER_SW_DMA_0, 120, 0, 0, 0, 480, 480, 960, 0 },
- { XFER_PIO_5, 20, 50, 30, 100, 50, 30, 100, 0 },
+ { XFER_PIO_6, 10, 55, 20, 80, 55, 20, 80, 0 },
+ { XFER_PIO_5, 15, 65, 25, 100, 65, 25, 100, 0 },
{ XFER_PIO_4, 25, 70, 25, 120, 70, 25, 120, 0 },
{ XFER_PIO_3, 30, 80, 70, 180, 80, 70, 180, 0 },
@@ -90,6 +93,10 @@
/* conservative "downgrade" for all pre-ATA2 drives */
if (pio < 3 && cycle < t->cycle)
cycle = 0; /* use standard timing */
+
+ /* Use the standard timing for the CF specific modes too */
+ if (pio > 4 && ata_id_is_cfa(id))
+ cycle = 0;
}
return cycle ? cycle : t->cycle;
@@ -161,7 +168,8 @@
if (speed <= XFER_PIO_2)
p.cycle = p.cyc8b = id[ATA_ID_EIDE_PIO];
- else if (speed <= XFER_PIO_5)
+ else if ((speed <= XFER_PIO_4) ||
+ (speed == XFER_PIO_5 && !ata_id_is_cfa(id)))
p.cycle = p.cyc8b = id[ATA_ID_EIDE_PIO_IORDY];
else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2)
p.cycle = id[ATA_ID_EIDE_DMA_MIN];