23 Jul, 2008

1 commit

• 7f1b358a2   I/OAT: I/OAT version 3.0 support ... Browse Code »

  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

  Maciej Sosnowski

  2008-07-23 08:30:57 +0800  

15 Nov, 2007

1 commit

• 7bb67c14f   I/OAT: Add support for version 2 of ioatdma device ... Browse Code »

  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

  Shannon Nelson

  2007-11-15 10:45:41 +0800  

19 Oct, 2007

3 commits

• 5149fd010   I/OAT: clean up error handling and some print messages ... Browse Code »

  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

  Shannon Nelson

  2007-10-19 05:37:32 +0800  
• dfe2299e7   I/OAT: clean up of dca provider start and stop ... Browse Code »

  Don't start ioat_dca if ioat_dma didn't start, and then stop ioat_dca
  before stopping ioat_dma. Since the ioat_dma side does the pci device
  work, This takes care of ioat_dca trying to use a bad device reference.

  Signed-off-by: Shannon Nelson
  Cc: Dan Williams
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  Shannon Nelson

  2007-10-19 05:37:32 +0800  
• 7df7cf067   I/OAT: cleanup pci issues ... Browse Code »

  Reorder the pci release actions
  Letting go of the resources in the right order helps get rid of
  occasional kernel complaints.

  Fix the pci_driver object name [Randy Dunlap]
  Rename the struct pci_driver data so that false section mismatch
  warnings won't be produced.

  Cc: Randy Dunlap
  Signed-off-by: Shannon Nelson
  Cc: Dan Williams
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  Shannon Nelson

  2007-10-19 05:37:32 +0800  

17 Oct, 2007

2 commits

• 2ed6dc34f   I/OAT: Add DCA services ... Browse Code »

  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

  Shannon Nelson

  2007-10-17 00:43:09 +0800  
• 8ab89567d   I/OAT: Split PCI startup from DMA handling code ... Browse Code »

  Split the general PCI startup from the DMA handling code in order to
  prepare for adding support for DCA services and future versions of the
  ioatdma device.

  [Rusty Russell] Removal of __unsafe() usage.

  Signed-off-by: Shannon Nelson
  Acked-by: David S. Miller
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  Shannon Nelson

  2007-10-17 00:43:09 +0800