[deliverable/linux.git] / arch / ia64 / kernel / pci-swiotlb.c

/* Glue code to lib/swiotlb.c */

#include <linux/pci.h>
#include <linux/gfp.h>
#include <linux/cache.h>
#include <linux/module.h>
#include <linux/dma-mapping.h>

#include <asm/swiotlb.h>
#include <asm/dma.h>
#include <asm/iommu.h>
#include <asm/machvec.h>

int swiotlb __read_mostly;
EXPORT_SYMBOL(swiotlb);

static void *ia64_swiotlb_alloc_coherent(struct device *dev, size_t size,
					 dma_addr_t *dma_handle, gfp_t gfp,
					 struct dma_attrs *attrs)
{
	if (dev->coherent_dma_mask != DMA_BIT_MASK(64))
		gfp |= GFP_DMA;
	return swiotlb_alloc_coherent(dev, size, dma_handle, gfp);
}

static void ia64_swiotlb_free_coherent(struct device *dev, size_t size,
				       void *vaddr, dma_addr_t dma_addr,
				       struct dma_attrs *attrs)
{
	swiotlb_free_coherent(dev, size, vaddr, dma_addr);
}

struct dma_map_ops swiotlb_dma_ops = {
	.alloc = ia64_swiotlb_alloc_coherent,
	.free = ia64_swiotlb_free_coherent,
	.map_page = swiotlb_map_page,
	.unmap_page = swiotlb_unmap_page,
	.map_sg = swiotlb_map_sg_attrs,
	.unmap_sg = swiotlb_unmap_sg_attrs,
	.sync_single_for_cpu = swiotlb_sync_single_for_cpu,
	.sync_single_for_device = swiotlb_sync_single_for_device,
	.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
	.sync_sg_for_device = swiotlb_sync_sg_for_device,
	.dma_supported = swiotlb_dma_supported,
	.mapping_error = swiotlb_dma_mapping_error,
};

void __init swiotlb_dma_init(void)
{
	dma_ops = &swiotlb_dma_ops;
	swiotlb_init(1);
}

void __init pci_swiotlb_init(void)
{
	if (!iommu_detected) {
#ifdef CONFIG_IA64_GENERIC
		swiotlb = 1;
		printk(KERN_INFO "PCI-DMA: Re-initialize machine vector.\n");
		machvec_init("dig");
		swiotlb_init(1);
		dma_ops = &swiotlb_dma_ops;
#else
		panic("Unable to find Intel IOMMU");
#endif
	}
}
Commit	Line	Data
62fdd767 FY	1	/* Glue code to lib/swiotlb.c */
	2
	3	#include <linux/pci.h>
5a0e3ad6	4	#include <linux/gfp.h>
62fdd767 FY	5	#include <linux/cache.h>
	6	#include <linux/module.h>
	7	#include <linux/dma-mapping.h>
	8
	9	#include <asm/swiotlb.h>
	10	#include <asm/dma.h>
	11	#include <asm/iommu.h>
	12	#include <asm/machvec.h>
	13
	14	int swiotlb __read_mostly;
	15	EXPORT_SYMBOL(swiotlb);
	16
97d9800d	17	static void ia64_swiotlb_alloc_coherent(struct device dev, size_t size,
baa676fc AP	18	dma_addr_t *dma_handle, gfp_t gfp,
baa676fc AP	19	struct dma_attrs *attrs)
97d9800d	20	{
e930438c	21	if (dev->coherent_dma_mask != DMA_BIT_MASK(64))
97d9800d FT	22	gfp \|= GFP_DMA;
	23	return swiotlb_alloc_coherent(dev, size, dma_handle, gfp);
	24	}
	25
baa676fc AP	26	static void ia64_swiotlb_free_coherent(struct device *dev, size_t size,
	27	void *vaddr, dma_addr_t dma_addr,
	28	struct dma_attrs *attrs)
	29	{
	30	swiotlb_free_coherent(dev, size, vaddr, dma_addr);
	31	}
	32
160c1d8e	33	struct dma_map_ops swiotlb_dma_ops = {
baa676fc AP	34	.alloc = ia64_swiotlb_alloc_coherent,
baa676fc AP	35	.free = ia64_swiotlb_free_coherent,
160c1d8e FT	36	.map_page = swiotlb_map_page,
	37	.unmap_page = swiotlb_unmap_page,
	38	.map_sg = swiotlb_map_sg_attrs,
	39	.unmap_sg = swiotlb_unmap_sg_attrs,
62fdd767 FY	40	.sync_single_for_cpu = swiotlb_sync_single_for_cpu,
62fdd767 FY	41	.sync_single_for_device = swiotlb_sync_single_for_device,
62fdd767 FY	42	.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
62fdd767 FY	43	.sync_sg_for_device = swiotlb_sync_sg_for_device,
160c1d8e	44	.dma_supported = swiotlb_dma_supported,
c82e4417	45	.mapping_error = swiotlb_dma_mapping_error,
62fdd767 FY	46	};
62fdd767 FY	47
07716e4d	48	void __init swiotlb_dma_init(void)
4d9b977c FT	49	{
4d9b977c FT	50	dma_ops = &swiotlb_dma_ops;
ad32e8cb	51	swiotlb_init(1);
4d9b977c FT	52	}
4d9b977c FT	53
62fdd767 FY	54	void __init pci_swiotlb_init(void)
62fdd767 FY	55	{
ba6c5487	56	if (!iommu_detected) {
62fdd767 FY	57	#ifdef CONFIG_IA64_GENERIC
	58	swiotlb = 1;
	59	printk(KERN_INFO "PCI-DMA: Re-initialize machine vector.\n");
	60	machvec_init("dig");
ad32e8cb	61	swiotlb_init(1);
62fdd767 FY	62	dma_ops = &swiotlb_dma_ops;
	63	#else
	64	panic("Unable to find Intel IOMMU");
	65	#endif
	66	}
	67	}