blob: 2977539880fb6d29b2699465c007c3617d78ec07 [file] [log] [blame]
Jerome Glisse771fe6b2009-06-05 14:42:42 +02001/*
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 */
36int 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
57void 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
76int radeon_gart_table_vram_alloc(struct radeon_device *rdev)
77{
78 uint64_t gpu_addr;
79 int r;
80
81 if (rdev->gart.table.vram.robj == NULL) {
82 r = radeon_object_create(rdev, NULL,
83 rdev->gart.table_size,
84 true,
85 RADEON_GEM_DOMAIN_VRAM,
86 false, &rdev->gart.table.vram.robj);
87 if (r) {
88 return r;
89 }
90 }
91 r = radeon_object_pin(rdev->gart.table.vram.robj,
92 RADEON_GEM_DOMAIN_VRAM, &gpu_addr);
93 if (r) {
94 radeon_object_unref(&rdev->gart.table.vram.robj);
95 return r;
96 }
97 r = radeon_object_kmap(rdev->gart.table.vram.robj,
98 (void **)&rdev->gart.table.vram.ptr);
99 if (r) {
100 radeon_object_unpin(rdev->gart.table.vram.robj);
101 radeon_object_unref(&rdev->gart.table.vram.robj);
102 DRM_ERROR("radeon: failed to map gart vram table.\n");
103 return r;
104 }
105 rdev->gart.table_addr = gpu_addr;
106 return 0;
107}
108
109void radeon_gart_table_vram_free(struct radeon_device *rdev)
110{
111 if (rdev->gart.table.vram.robj == NULL) {
112 return;
113 }
114 radeon_object_kunmap(rdev->gart.table.vram.robj);
115 radeon_object_unpin(rdev->gart.table.vram.robj);
116 radeon_object_unref(&rdev->gart.table.vram.robj);
117}
118
119
120
121
122/*
123 * Common gart functions.
124 */
125void radeon_gart_unbind(struct radeon_device *rdev, unsigned offset,
126 int pages)
127{
128 unsigned t;
129 unsigned p;
130 int i, j;
131
132 if (!rdev->gart.ready) {
133 WARN(1, "trying to unbind memory to unitialized GART !\n");
134 return;
135 }
136 t = offset / 4096;
137 p = t / (PAGE_SIZE / 4096);
138 for (i = 0; i < pages; i++, p++) {
139 if (rdev->gart.pages[p]) {
140 pci_unmap_page(rdev->pdev, rdev->gart.pages_addr[p],
141 PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
142 rdev->gart.pages[p] = NULL;
143 rdev->gart.pages_addr[p] = 0;
144 for (j = 0; j < (PAGE_SIZE / 4096); j++, t++) {
145 radeon_gart_set_page(rdev, t, 0);
146 }
147 }
148 }
149 mb();
150 radeon_gart_tlb_flush(rdev);
151}
152
153int radeon_gart_bind(struct radeon_device *rdev, unsigned offset,
154 int pages, struct page **pagelist)
155{
156 unsigned t;
157 unsigned p;
158 uint64_t page_base;
159 int i, j;
160
161 if (!rdev->gart.ready) {
162 DRM_ERROR("trying to bind memory to unitialized GART !\n");
163 return -EINVAL;
164 }
165 t = offset / 4096;
166 p = t / (PAGE_SIZE / 4096);
167
168 for (i = 0; i < pages; i++, p++) {
169 /* we need to support large memory configurations */
170 /* assume that unbind have already been call on the range */
171 rdev->gart.pages_addr[p] = pci_map_page(rdev->pdev, pagelist[i],
172 0, PAGE_SIZE,
173 PCI_DMA_BIDIRECTIONAL);
174 if (pci_dma_mapping_error(rdev->pdev, rdev->gart.pages_addr[p])) {
175 /* FIXME: failed to map page (return -ENOMEM?) */
176 radeon_gart_unbind(rdev, offset, pages);
177 return -ENOMEM;
178 }
179 rdev->gart.pages[p] = pagelist[i];
Dave Airlieed10f952009-06-29 18:29:11 +1000180 page_base = rdev->gart.pages_addr[p];
Jerome Glisse771fe6b2009-06-05 14:42:42 +0200181 for (j = 0; j < (PAGE_SIZE / 4096); j++, t++) {
182 radeon_gart_set_page(rdev, t, page_base);
183 page_base += 4096;
184 }
185 }
186 mb();
187 radeon_gart_tlb_flush(rdev);
188 return 0;
189}
190
191int radeon_gart_init(struct radeon_device *rdev)
192{
193 if (rdev->gart.pages) {
194 return 0;
195 }
196 /* We need PAGE_SIZE >= 4096 */
197 if (PAGE_SIZE < 4096) {
198 DRM_ERROR("Page size is smaller than GPU page size!\n");
199 return -EINVAL;
200 }
201 /* Compute table size */
202 rdev->gart.num_cpu_pages = rdev->mc.gtt_size / PAGE_SIZE;
203 rdev->gart.num_gpu_pages = rdev->mc.gtt_size / 4096;
204 DRM_INFO("GART: num cpu pages %u, num gpu pages %u\n",
205 rdev->gart.num_cpu_pages, rdev->gart.num_gpu_pages);
206 /* Allocate pages table */
207 rdev->gart.pages = kzalloc(sizeof(void *) * rdev->gart.num_cpu_pages,
208 GFP_KERNEL);
209 if (rdev->gart.pages == NULL) {
210 radeon_gart_fini(rdev);
211 return -ENOMEM;
212 }
213 rdev->gart.pages_addr = kzalloc(sizeof(dma_addr_t) *
214 rdev->gart.num_cpu_pages, GFP_KERNEL);
215 if (rdev->gart.pages_addr == NULL) {
216 radeon_gart_fini(rdev);
217 return -ENOMEM;
218 }
219 return 0;
220}
221
222void radeon_gart_fini(struct radeon_device *rdev)
223{
224 if (rdev->gart.pages && rdev->gart.pages_addr && rdev->gart.ready) {
225 /* unbind pages */
226 radeon_gart_unbind(rdev, 0, rdev->gart.num_cpu_pages);
227 }
228 rdev->gart.ready = false;
229 kfree(rdev->gart.pages);
230 kfree(rdev->gart.pages_addr);
231 rdev->gart.pages = NULL;
232 rdev->gart.pages_addr = NULL;
233}