[net-next-2.6.git] / drivers / gpu / drm / radeon / radeon_gart.c

/*
 * Copyright 2008 Advanced Micro Devices, Inc.
 * Copyright 2008 Red Hat Inc.
 * Copyright 2009 Jerome Glisse.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: Dave Airlie
 *          Alex Deucher
 *          Jerome Glisse
 */
#include "drmP.h"
#include "radeon_drm.h"
#include "radeon.h"
#include "radeon_reg.h"

/*
 * Common GART table functions.
 */
int radeon_gart_table_ram_alloc(struct radeon_device *rdev)
{
	void *ptr;

	ptr = pci_alloc_consistent(rdev->pdev, rdev->gart.table_size,
				   &rdev->gart.table_addr);
	if (ptr == NULL) {
		return -ENOMEM;
	}
#ifdef CONFIG_X86
	if (rdev->family == CHIP_RS400 || rdev->family == CHIP_RS480 ||
	    rdev->family == CHIP_RS690 || rdev->family == CHIP_RS740) {
		set_memory_uc((unsigned long)ptr,
			      rdev->gart.table_size >> PAGE_SHIFT);
	}
#endif
	rdev->gart.table.ram.ptr = ptr;
	memset((void *)rdev->gart.table.ram.ptr, 0, rdev->gart.table_size);
	return 0;
}

void radeon_gart_table_ram_free(struct radeon_device *rdev)
{
	if (rdev->gart.table.ram.ptr == NULL) {
		return;
	}
#ifdef CONFIG_X86
	if (rdev->family == CHIP_RS400 || rdev->family == CHIP_RS480 ||
	    rdev->family == CHIP_RS690 || rdev->family == CHIP_RS740) {
		set_memory_wb((unsigned long)rdev->gart.table.ram.ptr,
			      rdev->gart.table_size >> PAGE_SHIFT);
	}
#endif
	pci_free_consistent(rdev->pdev, rdev->gart.table_size,
			    (void *)rdev->gart.table.ram.ptr,
			    rdev->gart.table_addr);
	rdev->gart.table.ram.ptr = NULL;
	rdev->gart.table_addr = 0;
}

int radeon_gart_table_vram_alloc(struct radeon_device *rdev)
{
	int r;

	if (rdev->gart.table.vram.robj == NULL) {
		r = radeon_object_create(rdev, NULL,
					 rdev->gart.table_size,
					 true,
					 RADEON_GEM_DOMAIN_VRAM,
					 false, &rdev->gart.table.vram.robj);
		if (r) {
			return r;
		}
	}
	return 0;
}

int radeon_gart_table_vram_pin(struct radeon_device *rdev)
{
	uint64_t gpu_addr;
	int r;

	r = radeon_object_pin(rdev->gart.table.vram.robj,
			      RADEON_GEM_DOMAIN_VRAM, &gpu_addr);
	if (r) {
		radeon_object_unref(&rdev->gart.table.vram.robj);
		return r;
	}
	r = radeon_object_kmap(rdev->gart.table.vram.robj,
			       (void **)&rdev->gart.table.vram.ptr);
	if (r) {
		radeon_object_unpin(rdev->gart.table.vram.robj);
		radeon_object_unref(&rdev->gart.table.vram.robj);
		DRM_ERROR("radeon: failed to map gart vram table.\n");
		return r;
	}
	rdev->gart.table_addr = gpu_addr;
	return 0;
}

void radeon_gart_table_vram_free(struct radeon_device *rdev)
{
	if (rdev->gart.table.vram.robj == NULL) {
		return;
	}
	radeon_object_kunmap(rdev->gart.table.vram.robj);
	radeon_object_unpin(rdev->gart.table.vram.robj);
	radeon_object_unref(&rdev->gart.table.vram.robj);
}


/*
 * Common gart functions.
 */
void radeon_gart_unbind(struct radeon_device *rdev, unsigned offset,
			int pages)
{
	unsigned t;
	unsigned p;
	int i, j;

	if (!rdev->gart.ready) {
		WARN(1, "trying to unbind memory to unitialized GART !\n");
		return;
	}
	t = offset / 4096;
	p = t / (PAGE_SIZE / 4096);
	for (i = 0; i < pages; i++, p++) {
		if (rdev->gart.pages[p]) {
			pci_unmap_page(rdev->pdev, rdev->gart.pages_addr[p],
				       PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
			rdev->gart.pages[p] = NULL;
			rdev->gart.pages_addr[p] = 0;
			for (j = 0; j < (PAGE_SIZE / 4096); j++, t++) {
				radeon_gart_set_page(rdev, t, 0);
			}
		}
	}
	mb();
	radeon_gart_tlb_flush(rdev);
}

int radeon_gart_bind(struct radeon_device *rdev, unsigned offset,
		     int pages, struct page **pagelist)
{
	unsigned t;
	unsigned p;
	uint64_t page_base;
	int i, j;

	if (!rdev->gart.ready) {
		DRM_ERROR("trying to bind memory to unitialized GART !\n");
		return -EINVAL;
	}
	t = offset / 4096;
	p = t / (PAGE_SIZE / 4096);

	for (i = 0; i < pages; i++, p++) {
		/* we need to support large memory configurations */
		/* assume that unbind have already been call on the range */
		rdev->gart.pages_addr[p] = pci_map_page(rdev->pdev, pagelist[i],
							0, PAGE_SIZE,
							PCI_DMA_BIDIRECTIONAL);
		if (pci_dma_mapping_error(rdev->pdev, rdev->gart.pages_addr[p])) {
			/* FIXME: failed to map page (return -ENOMEM?) */
			radeon_gart_unbind(rdev, offset, pages);
			return -ENOMEM;
		}
		rdev->gart.pages[p] = pagelist[i];
		page_base = rdev->gart.pages_addr[p];
		for (j = 0; j < (PAGE_SIZE / 4096); j++, t++) {
			radeon_gart_set_page(rdev, t, page_base);
			page_base += 4096;
		}
	}
	mb();
	radeon_gart_tlb_flush(rdev);
	return 0;
}

int radeon_gart_init(struct radeon_device *rdev)
{
	if (rdev->gart.pages) {
		return 0;
	}
	/* We need PAGE_SIZE >= 4096 */
	if (PAGE_SIZE < 4096) {
		DRM_ERROR("Page size is smaller than GPU page size!\n");
		return -EINVAL;
	}
	/* Compute table size */
	rdev->gart.num_cpu_pages = rdev->mc.gtt_size / PAGE_SIZE;
	rdev->gart.num_gpu_pages = rdev->mc.gtt_size / 4096;
	DRM_INFO("GART: num cpu pages %u, num gpu pages %u\n",
		 rdev->gart.num_cpu_pages, rdev->gart.num_gpu_pages);
	/* Allocate pages table */
	rdev->gart.pages = kzalloc(sizeof(void *) * rdev->gart.num_cpu_pages,
				   GFP_KERNEL);
	if (rdev->gart.pages == NULL) {
		radeon_gart_fini(rdev);
		return -ENOMEM;
	}
	rdev->gart.pages_addr = kzalloc(sizeof(dma_addr_t) *
					rdev->gart.num_cpu_pages, GFP_KERNEL);
	if (rdev->gart.pages_addr == NULL) {
		radeon_gart_fini(rdev);
		return -ENOMEM;
	}
	return 0;
}

void radeon_gart_fini(struct radeon_device *rdev)
{
	if (rdev->gart.pages && rdev->gart.pages_addr && rdev->gart.ready) {
		/* unbind pages */
		radeon_gart_unbind(rdev, 0, rdev->gart.num_cpu_pages);
	}
	rdev->gart.ready = false;
	kfree(rdev->gart.pages);
	kfree(rdev->gart.pages_addr);
	rdev->gart.pages = NULL;
	rdev->gart.pages_addr = NULL;
}
Commit	Line	Data
771fe6b9 JG	1	/*
	2	* Copyright 2008 Advanced Micro Devices, Inc.
	3	* Copyright 2008 Red Hat Inc.
	4	* Copyright 2009 Jerome Glisse.
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a
	7	* copy of this software and associated documentation files (the "Software"),
	8	* to deal in the Software without restriction, including without limitation
	9	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	10	* and/or sell copies of the Software, and to permit persons to whom the
	11	* Software is furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	20	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	21	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	22	* OTHER DEALINGS IN THE SOFTWARE.
	23	*
	24	* Authors: Dave Airlie
	25	* Alex Deucher
	26	* Jerome Glisse
	27	*/
	28	#include "drmP.h"
	29	#include "radeon_drm.h"
	30	#include "radeon.h"
	31	#include "radeon_reg.h"
	32
	33	/*
	34	* Common GART table functions.
	35	*/
	36	int radeon_gart_table_ram_alloc(struct radeon_device *rdev)
	37	{
	38	void *ptr;
	39
	40	ptr = pci_alloc_consistent(rdev->pdev, rdev->gart.table_size,
	41	&rdev->gart.table_addr);
	42	if (ptr == NULL) {
	43	return -ENOMEM;
	44	}
	45	#ifdef CONFIG_X86
	46	if (rdev->family == CHIP_RS400 \|\| rdev->family == CHIP_RS480 \|\|
	47	rdev->family == CHIP_RS690 \|\| rdev->family == CHIP_RS740) {
	48	set_memory_uc((unsigned long)ptr,
	49	rdev->gart.table_size >> PAGE_SHIFT);
	50	}
	51	#endif
	52	rdev->gart.table.ram.ptr = ptr;
	53	memset((void *)rdev->gart.table.ram.ptr, 0, rdev->gart.table_size);
	54	return 0;
	55	}
	56
	57	void radeon_gart_table_ram_free(struct radeon_device *rdev)
	58	{
	59	if (rdev->gart.table.ram.ptr == NULL) {
	60	return;
	61	}
	62	#ifdef CONFIG_X86
	63	if (rdev->family == CHIP_RS400 \|\| rdev->family == CHIP_RS480 \|\|
	64	rdev->family == CHIP_RS690 \|\| rdev->family == CHIP_RS740) {
65	set_memory_wb((unsigned long)rdev->gart.table.ram.ptr,
66	rdev->gart.table_size >> PAGE_SHIFT);
67	}
68	#endif
69	pci_free_consistent(rdev->pdev, rdev->gart.table_size,
70	(void *)rdev->gart.table.ram.ptr,
71	rdev->gart.table_addr);
72	rdev->gart.table.ram.ptr = NULL;
73	rdev->gart.table_addr = 0;
74	}
75
76	int radeon_gart_table_vram_alloc(struct radeon_device *rdev)
77	{
771fe6b9 JG	78	int r;
	79
	80	if (rdev->gart.table.vram.robj == NULL) {
	81	r = radeon_object_create(rdev, NULL,
	82	rdev->gart.table_size,
	83	true,
	84	RADEON_GEM_DOMAIN_VRAM,
	85	false, &rdev->gart.table.vram.robj);
	86	if (r) {
	87	return r;
	88	}
	89	}
4aac0473 JG	90	return 0;
	91	}
	92
	93	int radeon_gart_table_vram_pin(struct radeon_device *rdev)
	94	{
	95	uint64_t gpu_addr;
	96	int r;
	97
771fe6b9 JG	98	r = radeon_object_pin(rdev->gart.table.vram.robj,
	99	RADEON_GEM_DOMAIN_VRAM, &gpu_addr);
	100	if (r) {
	101	radeon_object_unref(&rdev->gart.table.vram.robj);
	102	return r;
	103	}
	104	r = radeon_object_kmap(rdev->gart.table.vram.robj,
	105	(void **)&rdev->gart.table.vram.ptr);
	106	if (r) {
	107	radeon_object_unpin(rdev->gart.table.vram.robj);
	108	radeon_object_unref(&rdev->gart.table.vram.robj);
	109	DRM_ERROR("radeon: failed to map gart vram table.\n");
	110	return r;
	111	}
	112	rdev->gart.table_addr = gpu_addr;
	113	return 0;
	114	}
	115
	116	void radeon_gart_table_vram_free(struct radeon_device *rdev)
	117	{
	118	if (rdev->gart.table.vram.robj == NULL) {
	119	return;
	120	}
	121	radeon_object_kunmap(rdev->gart.table.vram.robj);
	122	radeon_object_unpin(rdev->gart.table.vram.robj);
	123	radeon_object_unref(&rdev->gart.table.vram.robj);
	124	}
	125
	126
	127
	128
	129	/*
	130	* Common gart functions.
	131	*/
	132	void radeon_gart_unbind(struct radeon_device *rdev, unsigned offset,
	133	int pages)
	134	{
	135	unsigned t;
	136	unsigned p;
	137	int i, j;
	138
	139	if (!rdev->gart.ready) {
	140	WARN(1, "trying to unbind memory to unitialized GART !\n");
	141	return;
	142	}
	143	t = offset / 4096;
	144	p = t / (PAGE_SIZE / 4096);
	145	for (i = 0; i < pages; i++, p++) {
	146	if (rdev->gart.pages[p]) {
	147	pci_unmap_page(rdev->pdev, rdev->gart.pages_addr[p],
	148	PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
	149	rdev->gart.pages[p] = NULL;
	150	rdev->gart.pages_addr[p] = 0;
	151	for (j = 0; j < (PAGE_SIZE / 4096); j++, t++) {
	152	radeon_gart_set_page(rdev, t, 0);
	153	}
	154	}
	155	}
	156	mb();
	157	radeon_gart_tlb_flush(rdev);
	158	}
	159
	160	int radeon_gart_bind(struct radeon_device *rdev, unsigned offset,
	161	int pages, struct page **pagelist)
162	{
163	unsigned t;
164	unsigned p;
165	uint64_t page_base;
166	int i, j;
167
168	if (!rdev->gart.ready) {
169	DRM_ERROR("trying to bind memory to unitialized GART !\n");
170	return -EINVAL;
171	}
172	t = offset / 4096;
173	p = t / (PAGE_SIZE / 4096);
174
175	for (i = 0; i < pages; i++, p++) {
176	/* we need to support large memory configurations */
177	/* assume that unbind have already been call on the range */
178	rdev->gart.pages_addr[p] = pci_map_page(rdev->pdev, pagelist[i],
179	0, PAGE_SIZE,
180	PCI_DMA_BIDIRECTIONAL);
181	if (pci_dma_mapping_error(rdev->pdev, rdev->gart.pages_addr[p])) {
182	/* FIXME: failed to map page (return -ENOMEM?) */
183	radeon_gart_unbind(rdev, offset, pages);
184	return -ENOMEM;
185	}
186	rdev->gart.pages[p] = pagelist[i];
ed10f95d	187	page_base = rdev->gart.pages_addr[p];
771fe6b9 JG	188	for (j = 0; j < (PAGE_SIZE / 4096); j++, t++) {
	189	radeon_gart_set_page(rdev, t, page_base);
	190	page_base += 4096;
	191	}
	192	}
	193	mb();
	194	radeon_gart_tlb_flush(rdev);
	195	return 0;
	196	}
	197
	198	int radeon_gart_init(struct radeon_device *rdev)
	199	{
	200	if (rdev->gart.pages) {
	201	return 0;
	202	}
	203	/* We need PAGE_SIZE >= 4096 */
	204	if (PAGE_SIZE < 4096) {
	205	DRM_ERROR("Page size is smaller than GPU page size!\n");
	206	return -EINVAL;
	207	}
	208	/* Compute table size */
	209	rdev->gart.num_cpu_pages = rdev->mc.gtt_size / PAGE_SIZE;
	210	rdev->gart.num_gpu_pages = rdev->mc.gtt_size / 4096;
	211	DRM_INFO("GART: num cpu pages %u, num gpu pages %u\n",
	212	rdev->gart.num_cpu_pages, rdev->gart.num_gpu_pages);
	213	/* Allocate pages table */
	214	rdev->gart.pages = kzalloc(sizeof(void ) rdev->gart.num_cpu_pages,
	215	GFP_KERNEL);
	216	if (rdev->gart.pages == NULL) {
	217	radeon_gart_fini(rdev);
	218	return -ENOMEM;
	219	}
	220	rdev->gart.pages_addr = kzalloc(sizeof(dma_addr_t) *
	221	rdev->gart.num_cpu_pages, GFP_KERNEL);
	222	if (rdev->gart.pages_addr == NULL) {
	223	radeon_gart_fini(rdev);
	224	return -ENOMEM;
	225	}
	226	return 0;
	227	}
	228
	229	void radeon_gart_fini(struct radeon_device *rdev)
	230	{
	231	if (rdev->gart.pages && rdev->gart.pages_addr && rdev->gart.ready) {
	232	/* unbind pages */
	233	radeon_gart_unbind(rdev, 0, rdev->gart.num_cpu_pages);
	234	}
	235	rdev->gart.ready = false;
	236	kfree(rdev->gart.pages);
	237	kfree(rdev->gart.pages_addr);
	238	rdev->gart.pages = NULL;
	239	rdev->gart.pages_addr = NULL;
	240	}