From: Becky Bruce <beckyb@kernel.crashing.org>
To: linux-kernel@vger.kernel.org, mingo@elte.hu, jeremy@goop.org,
fujita.tomonori@lab.ntt.co.jp, ian.campbell@citrix.com
Cc: Becky Bruce <beckyb@kernel.crashing.org>
Subject: [PATCH 4/7] swiotlb: Allow arch override of address_needs_mapping
Date: Fri, 3 Apr 2009 20:56:46 -0500 [thread overview]
Message-ID: <1238810209-24499-5-git-send-email-beckyb@kernel.crashing.org> (raw)
In-Reply-To: <1238810209-24499-4-git-send-email-beckyb@kernel.crashing.org>
Some architectures require additional checking to determine
if a device can dma to an address and need to provide their
own address_needs_mapping..
Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
---
lib/swiotlb.c | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index eb6dbbd..af2ec25 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -145,6 +145,12 @@ static void *swiotlb_bus_to_virt(dma_addr_t address)
return phys_to_virt(swiotlb_bus_to_phys(address));
}
+int __weak swiotlb_arch_address_needs_mapping(struct device *hwdev,
+ dma_addr_t addr, size_t size)
+{
+ return !is_buffer_dma_capable(dma_get_mask(hwdev), addr, size);
+}
+
int __weak swiotlb_arch_range_needs_mapping(phys_addr_t paddr, size_t size)
{
return 0;
@@ -309,10 +315,10 @@ cleanup1:
return -ENOMEM;
}
-static int
+static inline int
address_needs_mapping(struct device *hwdev, dma_addr_t addr, size_t size)
{
- return !is_buffer_dma_capable(dma_get_mask(hwdev), addr, size);
+ return swiotlb_arch_address_needs_mapping(hwdev, addr, size);
}
static inline int range_needs_mapping(phys_addr_t paddr, size_t size)
--
1.5.6.6
next prev parent reply other threads:[~2009-04-04 1:59 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-04 1:56 [PATCH V2 0/7] swiotlb: changes for powerpc/highmem Becky Bruce
2009-04-04 1:56 ` [PATCH 1/7] swiotlb: comment corrections (no code changes) Becky Bruce
2009-04-04 1:56 ` [PATCH 2/7] swiotlb: fix compile warning Becky Bruce
2009-04-04 1:56 ` [PATCH 3/7] swiotlb: map_page fix for highmem systems Becky Bruce
2009-04-04 1:56 ` Becky Bruce [this message]
2009-04-04 1:56 ` [PATCH 5/7] swiotlb: (re)Create swiotlb_unmap_single Becky Bruce
2009-04-04 1:56 ` [PATCH 6/7] swiotlb: Use swiotlb_sync_single instead of duplicating code Becky Bruce
2009-04-04 1:56 ` [PATCH 7/7] swiotlb: Change swiotlb_bus_to[phys,virt] prototypes Becky Bruce
2009-04-07 2:24 ` [PATCH 5/7] swiotlb: (re)Create swiotlb_unmap_single FUJITA Tomonori
2009-04-07 6:34 ` Kumar Gala
2009-04-07 9:09 ` FUJITA Tomonori
2009-04-07 15:32 ` Kumar Gala
2009-04-07 16:37 ` FUJITA Tomonori
2009-04-07 16:50 ` Kumar Gala
2009-04-07 17:22 ` FUJITA Tomonori
2009-04-07 17:32 ` Kumar Gala
2009-04-07 18:18 ` FUJITA Tomonori
2009-04-08 12:43 ` Ingo Molnar
2009-04-08 13:35 ` Kumar Gala
2009-04-08 14:05 ` Ingo Molnar
2009-04-08 14:10 ` Kumar Gala
2009-04-07 2:24 ` [PATCH V2 0/7] swiotlb: changes for powerpc/highmem FUJITA Tomonori
2009-04-08 14:09 [PATCH V3 " Kumar Gala
2009-04-08 14:09 ` [PATCH 1/7] swiotlb: comment corrections (no code changes) Kumar Gala
2009-04-08 14:09 ` [PATCH 2/7] swiotlb: fix compile warning Kumar Gala
2009-04-08 14:09 ` [PATCH 3/7] swiotlb: map_page fix for highmem systems Kumar Gala
2009-04-08 14:09 ` [PATCH 4/7] swiotlb: Allow arch override of address_needs_mapping Kumar Gala
2009-04-08 20:38 ` Christoph Hellwig
2009-04-08 20:56 ` Kumar Gala
2009-04-08 21:15 ` FUJITA Tomonori
2009-04-08 21:55 ` Jeremy Fitzhardinge
2009-04-08 22:10 ` FUJITA Tomonori
2009-04-08 22:36 ` Jeremy Fitzhardinge
2009-04-08 23:01 ` FUJITA Tomonori
2009-04-08 23:16 ` Jeremy Fitzhardinge
2009-04-08 23:37 ` FUJITA Tomonori
2009-04-09 0:09 ` Jeremy Fitzhardinge
2009-04-09 4:43 ` Kumar Gala
2009-04-09 18:34 ` FUJITA Tomonori
2009-04-09 19:19 ` Jeremy Fitzhardinge
2009-04-09 19:43 ` FUJITA Tomonori
2009-04-09 19:50 ` FUJITA Tomonori
2009-04-09 19:54 ` Jeremy Fitzhardinge
2009-04-09 4:59 ` Kumar Gala
2009-04-09 18:50 ` FUJITA Tomonori
2009-04-09 20:10 ` Kumar Gala
2009-04-09 20:25 ` Kumar Gala
2009-04-08 22:24 ` Christoph Hellwig
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