ChangeSet 1.1541, 2005/02/02 04:09:43-05:00, [EMAIL PROTECTED]
[libata] add DMA blacklist
Blacklist devices that seem to have some problem with DMA.
From drivers/ide/ide-dma.c blacklist.
libata-core.c | 92 +++++++++++++++++++++++++++++++++++++++++++++++++++++++---
1 files changed, 88 insertions(+), 4 deletions(-)
diff -Nru a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
--- a/drivers/scsi/libata-core.c 2005-02-07 13:03:23 -08:00
+++ b/drivers/scsi/libata-core.c 2005-02-07 13:03:23 -08:00
@@ -1699,6 +1699,70 @@
DPRINTK("EXIT\n");
}
+static void ata_pr_blacklisted(struct ata_port *ap, struct ata_device *dev)
+{
+ printk(KERN_WARNING "ata%u: dev %u is on DMA blacklist, disabling
DMA\n",
+ ap->id, dev->devno);
+}
+
+static const char * ata_dma_blacklist [] = {
+ "WDC AC11000H",
+ "WDC AC22100H",
+ "WDC AC32500H",
+ "WDC AC33100H",
+ "WDC AC31600H",
+ "WDC AC32100H",
+ "WDC AC23200L",
+ "Compaq CRD-8241B",
+ "CRD-8400B",
+ "CRD-8480B",
+ "CRD-8480C",
+ "CRD-8482B",
+ "CRD-84",
+ "SanDisk SDP3B",
+ "SanDisk SDP3B-64",
+ "SANYO CD-ROM CRD",
+ "HITACHI CDR-8",
+ "HITACHI CDR-8335",
+ "HITACHI CDR-8435",
+ "Toshiba CD-ROM XM-6202B",
+ "CD-532E-A",
+ "E-IDE CD-ROM CR-840",
+ "CD-ROM Drive/F5A",
+ "WPI CDD-820",
+ "SAMSUNG CD-ROM SC-148C",
+ "SAMSUNG CD-ROM SC",
+ "SanDisk SDP3B-64",
+ "SAMSUNG CD-ROM SN-124",
+ "ATAPI CD-ROM DRIVE 40X MAXIMUM",
+ "_NEC DV5800A",
+};
+
+static int ata_dma_blacklisted(struct ata_port *ap, struct ata_device *dev)
+{
+ unsigned char model_num[40];
+ char *s;
+ unsigned int len;
+ int i;
+
+ ata_dev_id_string(dev->id, model_num, ATA_ID_PROD_OFS,
+ sizeof(model_num));
+ s = &model_num[0];
+ len = strnlen(s, sizeof(model_num));
+
+ /* ATAPI specifies that empty space is blank-filled; remove blanks */
+ while ((len > 0) && (s[len - 1] == ' ')) {
+ len--;
+ s[len] = 0;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(ata_dma_blacklist); i++)
+ if (!strncmp(ata_dma_blacklist[i], s, len))
+ return 1;
+
+ return 0;
+}
+
static unsigned int ata_get_mode_mask(struct ata_port *ap, int shift)
{
struct ata_device *master, *slave;
@@ -1711,17 +1775,37 @@
if (shift == ATA_SHIFT_UDMA) {
mask = ap->udma_mask;
- if (ata_dev_present(master))
+ if (ata_dev_present(master)) {
mask &= (master->id[ATA_ID_UDMA_MODES] & 0xff);
- if (ata_dev_present(slave))
+ if (ata_dma_blacklisted(ap, master)) {
+ mask = 0;
+ ata_pr_blacklisted(ap, master);
+ }
+ }
+ if (ata_dev_present(slave)) {
mask &= (slave->id[ATA_ID_UDMA_MODES] & 0xff);
+ if (ata_dma_blacklisted(ap, slave)) {
+ mask = 0;
+ ata_pr_blacklisted(ap, slave);
+ }
+ }
}
else if (shift == ATA_SHIFT_MWDMA) {
mask = ap->mwdma_mask;
- if (ata_dev_present(master))
+ if (ata_dev_present(master)) {
mask &= (master->id[ATA_ID_MWDMA_MODES] & 0x07);
- if (ata_dev_present(slave))
+ if (ata_dma_blacklisted(ap, master)) {
+ mask = 0;
+ ata_pr_blacklisted(ap, master);
+ }
+ }
+ if (ata_dev_present(slave)) {
mask &= (slave->id[ATA_ID_MWDMA_MODES] & 0x07);
+ if (ata_dma_blacklisted(ap, slave)) {
+ mask = 0;
+ ata_pr_blacklisted(ap, slave);
+ }
+ }
}
else if (shift == ATA_SHIFT_PIO) {
mask = ap->pio_mask;
-
To unsubscribe from this list: send the line "unsubscribe bk-commits-24" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
