From b352e57dc3bb5033996adaa67c2f69b795eddd39 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Thu, 10 Aug 2006 18:52:12 +0100 Subject: [PATCH] libata: Add CompactFlash support The CFA world has some additional rules and drive modes we need to support for newer expansion cards and on embedded boxes Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 62 +++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 54 insertions(+), 8 deletions(-) (limited to 'drivers/ata') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 0ac0b519cf2d..9092416a6301 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -386,9 +386,13 @@ static const char *ata_mode_string(unsigned int xfer_mask) "PIO2", "PIO3", "PIO4", + "PIO5", + "PIO6", "MWDMA0", "MWDMA1", "MWDMA2", + "MWDMA3", + "MWDMA4", "UDMA/16", "UDMA/25", "UDMA/33", @@ -875,6 +879,23 @@ static unsigned int ata_id_xfermask(const u16 *id) mwdma_mask = id[ATA_ID_MWDMA_MODES] & 0x07; + if (ata_id_is_cfa(id)) { + /* + * Process compact flash extended modes + */ + int pio = id[163] & 0x7; + int dma = (id[163] >> 3) & 7; + + if (pio) + pio_mask |= (1 << 5); + if (pio > 1) + pio_mask |= (1 << 6); + if (dma) + mwdma_mask |= (1 << 3); + if (dma > 1) + mwdma_mask |= (1 << 4); + } + udma_mask = 0; if (id[ATA_ID_FIELD_VALID] & (1 << 2)) udma_mask = id[ATA_ID_UDMA_MODES] & 0xff; @@ -1356,6 +1377,7 @@ int ata_dev_configure(struct ata_device *dev, int print_info) struct ata_port *ap = dev->ap; const u16 *id = dev->id; unsigned int xfer_mask; + char revbuf[7]; /* XYZ-99\0 */ int rc; if (!ata_dev_enabled(dev) && ata_msg_info(ap)) { @@ -1399,6 +1421,15 @@ int ata_dev_configure(struct ata_device *dev, int print_info) /* ATA-specific feature tests */ if (dev->class == ATA_DEV_ATA) { + if (ata_id_is_cfa(id)) { + if (id[162] & 1) /* CPRM may make this media unusable */ + ata_dev_printk(dev, KERN_WARNING, "ata%u: device %u supports DRM functions and may not be fully accessable.\n", + ap->id, dev->devno); + snprintf(revbuf, 7, "CFA"); + } + else + snprintf(revbuf, 7, "ATA-%d", ata_id_major_version(id)); + dev->n_sectors = ata_id_n_sectors(id); if (ata_id_has_lba(id)) { @@ -1417,9 +1448,9 @@ int ata_dev_configure(struct ata_device *dev, int print_info) /* print device info to dmesg */ if (ata_msg_drv(ap) && print_info) - ata_dev_printk(dev, KERN_INFO, "ATA-%d, " + ata_dev_printk(dev, KERN_INFO, "%s, " "max %s, %Lu sectors: %s %s\n", - ata_id_major_version(id), + revbuf, ata_mode_string(xfer_mask), (unsigned long long)dev->n_sectors, lba_desc, ncq_desc); @@ -1440,9 +1471,9 @@ int ata_dev_configure(struct ata_device *dev, int print_info) /* print device info to dmesg */ if (ata_msg_drv(ap) && print_info) - ata_dev_printk(dev, KERN_INFO, "ATA-%d, " + ata_dev_printk(dev, KERN_INFO, "%s, " "max %s, %Lu sectors: CHS %u/%u/%u\n", - ata_id_major_version(id), + revbuf, ata_mode_string(xfer_mask), (unsigned long long)dev->n_sectors, dev->cylinders, dev->heads, @@ -1900,10 +1931,11 @@ int sata_set_spd(struct ata_port *ap) * drivers/ide/ide-timing.h and was originally written by Vojtech Pavlik */ /* - * PIO 0-5, MWDMA 0-2 and UDMA 0-6 timings (in nanoseconds). + * PIO 0-4, MWDMA 0-2 and UDMA 0-6 timings (in nanoseconds). * These were taken from ATA/ATAPI-6 standard, rev 0a, except - * for PIO 5, which is a nonstandard extension and UDMA6, which - * is currently supported only by Maxtor drives. + * for UDMA6, which is currently supported only by Maxtor drives. + * + * For PIO 5/6 MWDMA 3/4 see the CFA specification 3.0. */ static const struct ata_timing ata_timing[] = { @@ -1913,6 +1945,8 @@ static const struct ata_timing ata_timing[] = { { XFER_UDMA_4, 0, 0, 0, 0, 0, 0, 0, 30 }, { XFER_UDMA_3, 0, 0, 0, 0, 0, 0, 0, 45 }, + { 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_UDMA_2, 0, 0, 0, 0, 0, 0, 0, 60 }, { XFER_UDMA_1, 0, 0, 0, 0, 0, 0, 0, 80 }, { XFER_UDMA_0, 0, 0, 0, 0, 0, 0, 0, 120 }, @@ -1927,7 +1961,8 @@ static const struct ata_timing ata_timing[] = { { 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 }, @@ -3062,6 +3097,17 @@ static void ata_dev_xfermask(struct ata_device *dev) dev->mwdma_mask, dev->udma_mask); xfer_mask &= ata_id_xfermask(dev->id); + /* + * CFA Advanced TrueIDE timings are not allowed on a shared + * cable + */ + if (ata_dev_pair(dev)) { + /* No PIO5 or PIO6 */ + xfer_mask &= ~(0x03 << (ATA_SHIFT_PIO + 5)); + /* No MWDMA3 or MWDMA 4 */ + xfer_mask &= ~(0x03 << (ATA_SHIFT_MWDMA + 3)); + } + if (ata_dma_blacklisted(dev)) { xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA); ata_dev_printk(dev, KERN_WARNING, -- cgit v1.2.2