Author: mav
Date: Thu Sep 2 12:32:29 2010
New Revision: 212146
URL: http://svn.freebsd.org/changeset/base/212146
Log:
Add fix for SiI3114 and SiI3512 chips bug, which caused sending R_ERR in
response to DMA activate FIS under certain circumstances. This is
recommended fix from chip datasheet. If triggered, this bug most likely
cause write command timeout.
MFC after: 2 weeks
Modified:
head/sys/dev/ata/chipsets/ata-siliconimage.c
Modified: head/sys/dev/ata/chipsets/ata-siliconimage.c
==============================================================================
--- head/sys/dev/ata/chipsets/ata-siliconimage.c Thu Sep 2 11:18:43
2010 (r212145)
+++ head/sys/dev/ata/chipsets/ata-siliconimage.c Thu Sep 2 12:32:29
2010 (r212146)
@@ -365,7 +365,15 @@ ata_sii_status(device_t dev)
static void
ata_sii_reset(device_t dev)
{
+ struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
struct ata_channel *ch = device_get_softc(dev);
+ int offset = ((ch->unit & 1) << 7) + ((ch->unit & 2) << 8);
+ uint32_t val;
+
+ /* Apply R_ERR on DMA activate FIS errata workaround. */
+ val = ATA_INL(ctlr->r_res2, 0x14c + offset);
+ if ((val & 0x3) == 0x1)
+ ATA_OUTL(ctlr->r_res2, 0x14c + offset, val & ~0x3);
if (ata_sata_phy_reset(dev, -1, 1))
ata_generic_reset(dev);
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