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Message-Id: <dc8a79267b2a2beb7566.1229458655@abulafia.goop.org>
Date: Tue, 16 Dec 2008 12:17:35 -0800
From: Jeremy Fitzhardinge <jeremy@...p.org>
To: Ingo Molnar <mingo@...e.hu>
Cc: linux-kernel@...r.kernel.org,
Xen-devel <xen-devel@...ts.xensource.com>,
the arch/x86 maintainers <x86@...nel.org>,
Ian Campbell <ian.campbell@...rix.com>,
Jan Beulich <jbeulich@...ell.com>,
FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Subject: [PATCH 11 of 14] x86: add swiotlb allocation functions
Add x86-specific swiotlb allocation functions. These are purely
default for the moment.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>
---
arch/x86/kernel/pci-swiotlb_64.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/x86/kernel/pci-swiotlb_64.c b/arch/x86/kernel/pci-swiotlb_64.c
--- a/arch/x86/kernel/pci-swiotlb_64.c
+++ b/arch/x86/kernel/pci-swiotlb_64.c
@@ -3,6 +3,8 @@
#include <linux/pci.h>
#include <linux/cache.h>
#include <linux/module.h>
+#include <linux/swiotlb.h>
+#include <linux/bootmem.h>
#include <linux/dma-mapping.h>
#include <asm/iommu.h>
@@ -11,6 +13,16 @@
int swiotlb __read_mostly;
+void *swiotlb_alloc_boot(size_t size, unsigned long nslabs)
+{
+ return alloc_bootmem_low_pages(size);
+}
+
+void *swiotlb_alloc(unsigned order, unsigned long nslabs)
+{
+ return (void *)__get_free_pages(GFP_DMA | __GFP_NOWARN, order);
+}
+
static dma_addr_t
swiotlb_map_single_phys(struct device *hwdev, phys_addr_t paddr, size_t size,
int direction)
--
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