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libata: fix CFA handling in ide_timing_compute()
Use standard cycle timing for CFA PIO5 and PIO6 modes.
Based on commit 74638c8
for IDE subsystem.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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parent
02d1d6160f
commit
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@ -3211,6 +3211,7 @@ const struct ata_timing *ata_timing_find_mode(u8 xfer_mode)
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int ata_timing_compute(struct ata_device *adev, unsigned short speed,
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struct ata_timing *t, int T, int UT)
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{
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const u16 *id = adev->id;
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const struct ata_timing *s;
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struct ata_timing p;
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@ -3228,14 +3229,18 @@ int ata_timing_compute(struct ata_device *adev, unsigned short speed,
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* PIO/MW_DMA cycle timing.
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*/
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if (adev->id[ATA_ID_FIELD_VALID] & 2) { /* EIDE drive */
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if (id[ATA_ID_FIELD_VALID] & 2) { /* EIDE drive */
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memset(&p, 0, sizeof(p));
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if (speed >= XFER_PIO_0 && speed <= XFER_SW_DMA_0) {
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if (speed <= XFER_PIO_2) p.cycle = p.cyc8b = adev->id[ATA_ID_EIDE_PIO];
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else p.cycle = p.cyc8b = adev->id[ATA_ID_EIDE_PIO_IORDY];
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} else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2) {
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p.cycle = adev->id[ATA_ID_EIDE_DMA_MIN];
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}
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if (speed <= XFER_PIO_2)
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p.cycle = p.cyc8b = id[ATA_ID_EIDE_PIO];
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else if ((speed <= XFER_PIO_4) ||
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(speed == XFER_PIO_5 && !ata_id_is_cfa(id)))
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p.cycle = p.cyc8b = id[ATA_ID_EIDE_PIO_IORDY];
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} else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2)
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p.cycle = id[ATA_ID_EIDE_DMA_MIN];
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ata_timing_merge(&p, t, t, ATA_TIMING_CYCLE | ATA_TIMING_CYC8B);
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}
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