kernel/git/stable/linux.git/drivers/dma/ioat_dca.c, branch master

ioat: move to drivers/dma/ioat/

2009-07-28T21:32:12+00:00

When first created the ioat driver was the only inhabitant of drivers/dma/. Now, it is the only multi-file (more than a .c and a .h) driver in the directory. Moving it to an ioat/ subdirectory allows the naming convention to be cleaned up, and allows for future splitting of the source files by hardware version (v1, v2, and v3). Signed-off-by: Maciej Sosnowski Signed-off-by: Dan Williams

I/OAT: update driver version and copyright dates

2009-03-04T23:04:40+00:00

Together with new fixes update driver version and extend copyright dates ranges. Signed-off-by: Maciej Sosnowski Signed-off-by: Shannon Nelson Acked-by: Jeff Kirsher Signed-off-by: Dan Williams

I/OAT: add verification for proper APICID_TAG_MAP setting by BIOS

2009-03-04T23:04:39+00:00

BIOS versions for systems with I/OAT ver.2 have been found which fail to program APICID_TAG_MAP for DCA. The ioatdma driver should recognize incorrectly set APICID_TAG_MAP and disable DCA in that case. Signed-off-by: Maciej Sosnowski Signed-off-by: Shannon Nelson Acked-by: Jeff Kirsher Signed-off-by: Dan Williams

I/OAT: I/OAT version 3.0 support

2008-07-23T00:30:57+00:00

This patch adds to ioatdma and dca modules support for Intel I/OAT DMA engine ver.3 (aka CB3 device). The main features of I/OAT ver.3 are: * 8 single channel DMA devices (8 channels total) * 8 DCA providers, each can accept 2 requesters * 8-bit TAG values and 32-bit extended APIC IDs Signed-off-by: Maciej Sosnowski Signed-off-by: Dan Williams

ioat_dca __iomem annotations

2008-03-30T21:18:41+00:00

Signed-off-by: Al Viro Signed-off-by: Linus Torvalds

I/OAT: Add support for version 2 of ioatdma device

2007-11-15T02:45:41+00:00

Add support for version 2 of the ioatdma device. This device handles the descriptor chain and DCA services slightly differently: - Instead of moving the dma descriptors between a busy and an idle chain, this new version uses a single circular chain so that we don't have rewrite the next_descriptor pointers as we add new requests, and the device doesn't need to re-read the last descriptor. - The new device has the DCA tags defined internally instead of needing them defined statically. Signed-off-by: Shannon Nelson Cc: "Williams, Dan J" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

I/OAT: clean up error handling and some print messages

2007-10-18T21:37:32+00:00

Make better use of dev_err(), and catch an error where the transaction creation might fail. Signed-off-by: Shannon Nelson Cc: Dan Williams Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

I/OAT: Add DCA services

2007-10-16T16:43:09+00:00

Add code to connect to the DCA driver and provide cpu tags for use by drivers that would like to use Direct Cache Access hints. [Adrian Bunk] Several Kconfig cleanup items [Andrew Morten, Chris Leech] Fix for using cpu_physical_id() even when built for uni-processor Signed-off-by: Shannon Nelson Acked-by: David S. Miller Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds