diff options
| 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-iops.c | |
| parent | c4199930b119eb9c1ffb102ed57eaac4d4424d08 (diff) | |
| download | lwn-74638c84821c066d02c158bc843c84499ddc9764.tar.gz lwn-74638c84821c066d02c158bc843c84499ddc9764.zip | |
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-iops.c')
| -rw-r--r-- | drivers/ide/ide-iops.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c index 0e62698146b6..0caca342802d 100644 --- a/drivers/ide/ide-iops.c +++ b/drivers/ide/ide-iops.c @@ -306,6 +306,7 @@ int ide_driveid_update(ide_drive_t *drive) drive->id[ATA_ID_UDMA_MODES] = id[ATA_ID_UDMA_MODES]; drive->id[ATA_ID_MWDMA_MODES] = id[ATA_ID_MWDMA_MODES]; drive->id[ATA_ID_SWDMA_MODES] = id[ATA_ID_SWDMA_MODES]; + drive->id[ATA_ID_CFA_MODES] = id[ATA_ID_CFA_MODES]; /* anything more ? */ kfree(id); @@ -390,7 +391,10 @@ int ide_config_drive_speed(ide_drive_t *drive, u8 speed) id[ATA_ID_UDMA_MODES] &= ~0xFF00; id[ATA_ID_MWDMA_MODES] &= ~0x0700; id[ATA_ID_SWDMA_MODES] &= ~0x0700; - } + if (ata_id_is_cfa(id)) + id[ATA_ID_CFA_MODES] &= ~0x0E00; + } else if (ata_id_is_cfa(id)) + id[ATA_ID_CFA_MODES] &= ~0x01C0; skip: #ifdef CONFIG_BLK_DEV_IDEDMA @@ -403,12 +407,18 @@ int ide_config_drive_speed(ide_drive_t *drive, u8 speed) if (speed >= XFER_UDMA_0) { i = 1 << (speed - XFER_UDMA_0); id[ATA_ID_UDMA_MODES] |= (i << 8 | i); + } else if (ata_id_is_cfa(id) && speed >= XFER_MW_DMA_3) { + i = speed - XFER_MW_DMA_2; + id[ATA_ID_CFA_MODES] |= i << 9; } else if (speed >= XFER_MW_DMA_0) { i = 1 << (speed - XFER_MW_DMA_0); id[ATA_ID_MWDMA_MODES] |= (i << 8 | i); } else if (speed >= XFER_SW_DMA_0) { i = 1 << (speed - XFER_SW_DMA_0); id[ATA_ID_SWDMA_MODES] |= (i << 8 | i); + } else if (ata_id_is_cfa(id) && speed >= XFER_PIO_5) { + i = speed - XFER_PIO_4; + id[ATA_ID_CFA_MODES] |= i << 6; } if (!drive->init_speed) |