Commit Graph

6 Commits

Author SHA1 Message Date
Jeremy Fitzhardinge
70a7d3cc13 swiotlb: add hwdev to swiotlb_phys_to_bus() / swiotlb_sg_to_bus()
Impact: extend functions with a (yet unused) parameter, update callsites

Some architectures need it - in preparation for highmem swiotlb.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-28 09:54:52 +01:00
Ian Campbell
b81ea27b23 swiotlb: add arch hook to force mapping
Impact: generalize the sw-IOTLB range checks

Some architectures require special rules to determine whether a range
needs mapping or not.  This adds a weak function for architectures to
override.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-17 18:58:13 +01:00
Ian Campbell
e08e1f7adb swiotlb: allow architectures to override phys<->bus<->phys conversions
Impact: generalize phys<->bus<->phys conversions in the swiotlb code

Architectures may need to override these conversions. Implement a
__weak hook point containing the default implementation.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-17 18:58:09 +01:00
Ian Campbell
0016fdee92 swiotlb: move some definitions to header
Impact: cleanup

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16 21:31:40 +01:00
Jeremy Fitzhardinge
8c5df16bec swiotlb: allow architectures to override swiotlb pool allocation
Impact: generalize swiotlb allocation code

Architectures may need to allocate memory specially for use with
the swiotlb.  Create the weak function swiotlb_alloc_boot() and
swiotlb_alloc() defaulting to the current behaviour.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16 21:31:38 +01:00
Joerg Roedel
1648993fb0 introduce generic header file for the software IO/TLB
A series of patches introduce a generic header file for the software
IO/TLB implementation in lib/swiotlb.c.  Currently each architecture using
this code defines the prototypes itself.  The prototypes are moved to
include/linux/swiotlb.h and this file is included in architecture specific
code for X86 and IA64.

This patch:

Create include/linux/swiotlb.h file which contains all function prototypes
for the lib/swiotlb.c file.

(akpm: the dependent patches will be trickled through arch trees)

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-16 11:21:28 -07:00