Alan & Albert, I just tried the patch-2.6.17-ide1.gz libata PATA patch on a sparc64 box in which I had put an Ultra133TX2 PCI card (pdc20269) and an old 80GB IBM Deskstar disk. The results were excellent: did lots of I/O with no kernel errors, and I got about 45MB/s read speed at udma5. (A minor nit: the patch kit doesn't have a config option for pata_pdc2027x, so I had to hack one in. See below.) In contrast, the old IDE pdc202xx_new driver had lots of problems with CRC errors causing it to disable DMA. I wasn't able to manually tune it above udma3 without getting more errors. This isn't sparc64-specific: I've had similar negative experience with the old IDE Promise drivers in a PowerMac. /Mikael --- linux-2.6.17/drivers/scsi/Kconfig.~1~ 2006-07-17 23:30:25.000000000 +0200 +++ linux-2.6.17/drivers/scsi/Kconfig 2006-07-17 23:39:25.000000000 +0200 @@ -843,6 +843,10 @@ config SCSI_PATA_PDC_OLD If unsure, say N. +config SCSI_PATA_PDC_NEW + tristate "Newer Promise PATA controller support (Raving Lunatic)" + depends on SCSI_SATA && PCI && EXPERIMENTAL + config SCSI_PATA_QDI tristate "QDI VLB PATA support" depends on SCSI_SATA --- linux-2.6.17/drivers/scsi/Makefile.~1~ 2006-07-17 23:30:25.000000000 +0200 +++ linux-2.6.17/drivers/scsi/Makefile 2006-07-17 23:40:06.000000000 +0200 @@ -161,6 +161,7 @@ obj-$(CONFIG_SCSI_PATA_OPTI) += libata.o obj-$(CONFIG_SCSI_PATA_OPTIDMA) += libata.o pata_optidma.o obj-$(CONFIG_SCSI_PATA_PCMCIA) += libata.o pata_pcmcia.o obj-$(CONFIG_SCSI_PATA_PDC_OLD) += libata.o pata_pdc202xx_old.o +obj-$(CONFIG_SCSI_PATA_PDC_NEW) += libata.o pata_pdc2027x.o obj-$(CONFIG_SCSI_PATA_QDI) += libata.o pata_qdi.o obj-$(CONFIG_SCSI_PATA_RADISYS) += libata.o pata_radisys.o obj-$(CONFIG_SCSI_PATA_RZ1000) += libata.o pata_rz1000.o - : send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
