2 * Copyright 2008 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Jerome Glisse.
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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.
24 * Authors: Dave Airlie
29 #include "radeon_drm.h"
31 #include "radeon_reg.h"
34 * Common GART table functions.
36 int radeon_gart_table_ram_alloc(struct radeon_device *rdev)
40 ptr = pci_alloc_consistent(rdev->pdev, rdev->gart.table_size,
41 &rdev->gart.table_addr);
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);
52 rdev->gart.table.ram.ptr = ptr;
53 memset((void *)rdev->gart.table.ram.ptr, 0, rdev->gart.table_size);
57 void radeon_gart_table_ram_free(struct radeon_device *rdev)
59 if (rdev->gart.table.ram.ptr == NULL) {
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);
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;
76 int radeon_gart_table_vram_alloc(struct radeon_device *rdev)
80 if (rdev->gart.table.vram.robj == NULL) {
81 r = radeon_bo_create(rdev, NULL, rdev->gart.table_size,
82 true, RADEON_GEM_DOMAIN_VRAM,
83 &rdev->gart.table.vram.robj);
91 int radeon_gart_table_vram_pin(struct radeon_device *rdev)
96 r = radeon_bo_reserve(rdev->gart.table.vram.robj, false);
99 r = radeon_bo_pin(rdev->gart.table.vram.robj,
100 RADEON_GEM_DOMAIN_VRAM, &gpu_addr);
102 radeon_bo_unreserve(rdev->gart.table.vram.robj);
105 r = radeon_bo_kmap(rdev->gart.table.vram.robj,
106 (void **)&rdev->gart.table.vram.ptr);
108 radeon_bo_unpin(rdev->gart.table.vram.robj);
109 radeon_bo_unreserve(rdev->gart.table.vram.robj);
110 rdev->gart.table_addr = gpu_addr;
114 void radeon_gart_table_vram_free(struct radeon_device *rdev)
118 if (rdev->gart.table.vram.robj == NULL) {
121 r = radeon_bo_reserve(rdev->gart.table.vram.robj, false);
122 if (likely(r == 0)) {
123 radeon_bo_kunmap(rdev->gart.table.vram.robj);
124 radeon_bo_unpin(rdev->gart.table.vram.robj);
125 radeon_bo_unreserve(rdev->gart.table.vram.robj);
127 radeon_bo_unref(&rdev->gart.table.vram.robj);
134 * Common gart functions.
136 void radeon_gart_unbind(struct radeon_device *rdev, unsigned offset,
143 if (!rdev->gart.ready) {
144 WARN(1, "trying to unbind memory to unitialized GART !\n");
147 t = offset / RADEON_GPU_PAGE_SIZE;
148 p = t / (PAGE_SIZE / RADEON_GPU_PAGE_SIZE);
149 for (i = 0; i < pages; i++, p++) {
150 if (rdev->gart.pages[p]) {
151 pci_unmap_page(rdev->pdev, rdev->gart.pages_addr[p],
152 PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
153 rdev->gart.pages[p] = NULL;
154 rdev->gart.pages_addr[p] = 0;
155 for (j = 0; j < (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); j++, t++) {
156 radeon_gart_set_page(rdev, t, 0);
161 radeon_gart_tlb_flush(rdev);
164 int radeon_gart_bind(struct radeon_device *rdev, unsigned offset,
165 int pages, struct page **pagelist)
172 if (!rdev->gart.ready) {
173 DRM_ERROR("trying to bind memory to unitialized GART !\n");
176 t = offset / RADEON_GPU_PAGE_SIZE;
177 p = t / (PAGE_SIZE / RADEON_GPU_PAGE_SIZE);
179 for (i = 0; i < pages; i++, p++) {
180 /* we need to support large memory configurations */
181 /* assume that unbind have already been call on the range */
182 rdev->gart.pages_addr[p] = pci_map_page(rdev->pdev, pagelist[i],
184 PCI_DMA_BIDIRECTIONAL);
185 if (pci_dma_mapping_error(rdev->pdev, rdev->gart.pages_addr[p])) {
186 /* FIXME: failed to map page (return -ENOMEM?) */
187 radeon_gart_unbind(rdev, offset, pages);
190 rdev->gart.pages[p] = pagelist[i];
191 page_base = rdev->gart.pages_addr[p];
192 for (j = 0; j < (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); j++, t++) {
193 radeon_gart_set_page(rdev, t, page_base);
194 page_base += RADEON_GPU_PAGE_SIZE;
198 radeon_gart_tlb_flush(rdev);
202 int radeon_gart_init(struct radeon_device *rdev)
204 if (rdev->gart.pages) {
207 /* We need PAGE_SIZE >= RADEON_GPU_PAGE_SIZE */
208 if (PAGE_SIZE < RADEON_GPU_PAGE_SIZE) {
209 DRM_ERROR("Page size is smaller than GPU page size!\n");
212 /* Compute table size */
213 rdev->gart.num_cpu_pages = rdev->mc.gtt_size / PAGE_SIZE;
214 rdev->gart.num_gpu_pages = rdev->mc.gtt_size / RADEON_GPU_PAGE_SIZE;
215 DRM_INFO("GART: num cpu pages %u, num gpu pages %u\n",
216 rdev->gart.num_cpu_pages, rdev->gart.num_gpu_pages);
217 /* Allocate pages table */
218 rdev->gart.pages = kzalloc(sizeof(void *) * rdev->gart.num_cpu_pages,
220 if (rdev->gart.pages == NULL) {
221 radeon_gart_fini(rdev);
224 rdev->gart.pages_addr = kzalloc(sizeof(dma_addr_t) *
225 rdev->gart.num_cpu_pages, GFP_KERNEL);
226 if (rdev->gart.pages_addr == NULL) {
227 radeon_gart_fini(rdev);
233 void radeon_gart_fini(struct radeon_device *rdev)
235 if (rdev->gart.pages && rdev->gart.pages_addr && rdev->gart.ready) {
237 radeon_gart_unbind(rdev, 0, rdev->gart.num_cpu_pages);
239 rdev->gart.ready = false;
240 kfree(rdev->gart.pages);
241 kfree(rdev->gart.pages_addr);
242 rdev->gart.pages = NULL;
243 rdev->gart.pages_addr = NULL;