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| author | Sergei Shtylyov <sshtylyov@ru.mvista.com> | 2009-03-31 20:15:28 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-03-31 20:15:28 +0200 |
| commit | 74638c84821c066d02c158bc843c84499ddc9764 (patch) | |
| tree | cd6f79f34d87d25a621aaf1369ce226923de3c14 /drivers/ide/ide-dma.c | |
| parent | c4199930b119eb9c1ffb102ed57eaac4d4424d08 (diff) | |
| download | op-kernel-dev-74638c84821c066d02c158bc843c84499ddc9764.zip op-kernel-dev-74638c84821c066d02c158bc843c84499ddc9764.tar.gz | |
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>
Diffstat (limited to 'drivers/ide/ide-dma.c')
| -rw-r--r-- | drivers/ide/ide-dma.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c index f9c9175..a0b8cab1 100644 --- a/drivers/ide/ide-dma.c +++ b/drivers/ide/ide-dma.c @@ -261,6 +261,14 @@ static unsigned int ide_get_mode_mask(ide_drive_t *drive, u8 base, u8 req_mode) break; case XFER_MW_DMA_0: mask = id[ATA_ID_MWDMA_MODES]; + + /* Also look for the CF specific MWDMA modes... */ + if (ata_id_is_cfa(id) && (id[ATA_ID_CFA_MODES] & 0x38)) { + u8 mode = ((id[ATA_ID_CFA_MODES] & 0x38) >> 3) - 1; + + mask |= ((2 << mode) - 1) << 3; + } + if (port_ops && port_ops->mdma_filter) mask &= port_ops->mdma_filter(drive); else |
