Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /** |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 2 | * \file ati_pcigart.c |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * ATI PCI GART support |
| 4 | * |
| 5 | * \author Gareth Hughes <gareth@valinux.com> |
| 6 | */ |
| 7 | |
| 8 | /* |
| 9 | * Created: Wed Dec 13 21:52:19 2000 by gareth@valinux.com |
| 10 | * |
| 11 | * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. |
| 12 | * All Rights Reserved. |
| 13 | * |
| 14 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 15 | * copy of this software and associated documentation files (the "Software"), |
| 16 | * to deal in the Software without restriction, including without limitation |
| 17 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 18 | * and/or sell copies of the Software, and to permit persons to whom the |
| 19 | * Software is furnished to do so, subject to the following conditions: |
| 20 | * |
| 21 | * The above copyright notice and this permission notice (including the next |
| 22 | * paragraph) shall be included in all copies or substantial portions of the |
| 23 | * Software. |
| 24 | * |
| 25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 26 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 27 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 28 | * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 29 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 30 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 31 | * DEALINGS IN THE SOFTWARE. |
| 32 | */ |
| 33 | |
| 34 | #include "drmP.h" |
| 35 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | # define ATI_PCIGART_PAGE_SIZE 4096 /**< PCI GART page size */ |
| 37 | |
Dave Airlie | b05c238 | 2008-03-17 10:24:24 +1000 | [diff] [blame] | 38 | static int drm_ati_alloc_pcigart_table(struct drm_device *dev, |
| 39 | struct drm_ati_pcigart_info *gart_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | { |
Dave Airlie | b05c238 | 2008-03-17 10:24:24 +1000 | [diff] [blame] | 41 | gart_info->table_handle = drm_pci_alloc(dev, gart_info->table_size, |
Zhenyu Wang | e6be8d9 | 2010-01-05 11:25:05 +0800 | [diff] [blame] | 42 | PAGE_SIZE); |
Dave Airlie | b05c238 | 2008-03-17 10:24:24 +1000 | [diff] [blame] | 43 | if (gart_info->table_handle == NULL) |
| 44 | return -ENOMEM; |
Dave Airlie | f2b04cd | 2007-05-08 15:19:23 +1000 | [diff] [blame] | 45 | |
Dave Airlie | b05c238 | 2008-03-17 10:24:24 +1000 | [diff] [blame] | 46 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | } |
| 48 | |
Dave Airlie | b05c238 | 2008-03-17 10:24:24 +1000 | [diff] [blame] | 49 | static void drm_ati_free_pcigart_table(struct drm_device *dev, |
| 50 | struct drm_ati_pcigart_info *gart_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | { |
Dave Airlie | b05c238 | 2008-03-17 10:24:24 +1000 | [diff] [blame] | 52 | drm_pci_free(dev, gart_info->table_handle); |
| 53 | gart_info->table_handle = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | } |
| 55 | |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 56 | int drm_ati_pcigart_cleanup(struct drm_device *dev, struct drm_ati_pcigart_info *gart_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | { |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 58 | struct drm_sg_mem *entry = dev->sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | unsigned long pages; |
| 60 | int i; |
Dave Airlie | b05c238 | 2008-03-17 10:24:24 +1000 | [diff] [blame] | 61 | int max_pages; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
| 63 | /* we need to support large memory configurations */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 64 | if (!entry) { |
| 65 | DRM_ERROR("no scatter/gather memory!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | return 0; |
| 67 | } |
| 68 | |
Dave Airlie | ea98a92 | 2005-09-11 20:28:11 +1000 | [diff] [blame] | 69 | if (gart_info->bus_addr) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | |
Dave Airlie | f2b04cd | 2007-05-08 15:19:23 +1000 | [diff] [blame] | 71 | max_pages = (gart_info->table_size / sizeof(u32)); |
| 72 | pages = (entry->pages <= max_pages) |
| 73 | ? entry->pages : max_pages; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 75 | for (i = 0; i < pages; i++) { |
| 76 | if (!entry->busaddr[i]) |
| 77 | break; |
Dave Airlie | 7ec700f | 2008-06-19 11:27:23 +1000 | [diff] [blame] | 78 | pci_unmap_page(dev->pdev, entry->busaddr[i], |
David Miller | 296c6ae | 2009-02-12 02:15:34 -0800 | [diff] [blame] | 79 | PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 81 | |
| 82 | if (gart_info->gart_table_location == DRM_ATI_GART_MAIN) |
| 83 | gart_info->bus_addr = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | } |
| 85 | |
Dave Airlie | b05c238 | 2008-03-17 10:24:24 +1000 | [diff] [blame] | 86 | if (gart_info->gart_table_location == DRM_ATI_GART_MAIN && |
| 87 | gart_info->table_handle) { |
| 88 | drm_ati_free_pcigart_table(dev, gart_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | return 1; |
| 92 | } |
| 93 | EXPORT_SYMBOL(drm_ati_pcigart_cleanup); |
| 94 | |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 95 | int drm_ati_pcigart_init(struct drm_device *dev, struct drm_ati_pcigart_info *gart_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | { |
David Miller | 5a7aad9 | 2009-02-12 02:15:27 -0800 | [diff] [blame] | 97 | struct drm_local_map *map = &gart_info->mapping; |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 98 | struct drm_sg_mem *entry = dev->sg; |
Dave Airlie | f26c473 | 2006-01-02 17:18:39 +1100 | [diff] [blame] | 99 | void *address = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | unsigned long pages; |
Dave Airlie | 6abf660 | 2009-02-26 10:13:47 +1000 | [diff] [blame] | 101 | u32 *pci_gart = NULL, page_base, gart_idx; |
Dave Airlie | b05c238 | 2008-03-17 10:24:24 +1000 | [diff] [blame] | 102 | dma_addr_t bus_address = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | int i, j, ret = 0; |
David Miller | d30333b | 2009-02-15 01:08:07 -0800 | [diff] [blame] | 104 | int max_ati_pages, max_real_pages; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 106 | if (!entry) { |
| 107 | DRM_ERROR("no scatter/gather memory!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | goto done; |
| 109 | } |
| 110 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 111 | if (gart_info->gart_table_location == DRM_ATI_GART_MAIN) { |
Dave Airlie | ea98a92 | 2005-09-11 20:28:11 +1000 | [diff] [blame] | 112 | DRM_DEBUG("PCI: no table in VRAM: using normal RAM\n"); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 113 | |
Zhenyu Wang | e6be8d9 | 2010-01-05 11:25:05 +0800 | [diff] [blame] | 114 | if (pci_set_dma_mask(dev->pdev, gart_info->table_mask)) { |
| 115 | DRM_ERROR("fail to set dma mask to 0x%Lx\n", |
Randy Dunlap | d7748ba | 2010-02-02 14:40:33 -0800 | [diff] [blame] | 116 | (unsigned long long)gart_info->table_mask); |
Zhenyu Wang | e6be8d9 | 2010-01-05 11:25:05 +0800 | [diff] [blame] | 117 | ret = 1; |
| 118 | goto done; |
| 119 | } |
| 120 | |
Dave Airlie | b05c238 | 2008-03-17 10:24:24 +1000 | [diff] [blame] | 121 | ret = drm_ati_alloc_pcigart_table(dev, gart_info); |
| 122 | if (ret) { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 123 | DRM_ERROR("cannot allocate PCI GART page!\n"); |
Dave Airlie | ea98a92 | 2005-09-11 20:28:11 +1000 | [diff] [blame] | 124 | goto done; |
| 125 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 126 | |
Dave Airlie | 6abf660 | 2009-02-26 10:13:47 +1000 | [diff] [blame] | 127 | pci_gart = gart_info->table_handle->vaddr; |
Dave Airlie | b05c238 | 2008-03-17 10:24:24 +1000 | [diff] [blame] | 128 | address = gart_info->table_handle->vaddr; |
| 129 | bus_address = gart_info->table_handle->busaddr; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 130 | } else { |
Dave Airlie | ea98a92 | 2005-09-11 20:28:11 +1000 | [diff] [blame] | 131 | address = gart_info->addr; |
| 132 | bus_address = gart_info->bus_addr; |
Andrew Morton | f67e74c | 2008-03-28 14:15:49 -0700 | [diff] [blame] | 133 | DRM_DEBUG("PCI: Gart Table: VRAM %08LX mapped at %08lX\n", |
| 134 | (unsigned long long)bus_address, |
| 135 | (unsigned long)address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | } |
| 137 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | |
David Miller | d30333b | 2009-02-15 01:08:07 -0800 | [diff] [blame] | 139 | max_ati_pages = (gart_info->table_size / sizeof(u32)); |
| 140 | max_real_pages = max_ati_pages / (PAGE_SIZE / ATI_PCIGART_PAGE_SIZE); |
| 141 | pages = (entry->pages <= max_real_pages) |
| 142 | ? entry->pages : max_real_pages; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | |
David Miller | 5a7aad9 | 2009-02-12 02:15:27 -0800 | [diff] [blame] | 144 | if (gart_info->gart_table_location == DRM_ATI_GART_MAIN) { |
David Miller | d30333b | 2009-02-15 01:08:07 -0800 | [diff] [blame] | 145 | memset(pci_gart, 0, max_ati_pages * sizeof(u32)); |
David Miller | 5a7aad9 | 2009-02-12 02:15:27 -0800 | [diff] [blame] | 146 | } else { |
Dave Airlie | 6abf660 | 2009-02-26 10:13:47 +1000 | [diff] [blame] | 147 | memset_io((void __iomem *)map->handle, 0, max_ati_pages * sizeof(u32)); |
David Miller | 5a7aad9 | 2009-02-12 02:15:27 -0800 | [diff] [blame] | 148 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | |
David Miller | 5a7aad9 | 2009-02-12 02:15:27 -0800 | [diff] [blame] | 150 | gart_idx = 0; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 151 | for (i = 0; i < pages; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | /* we need to support large memory configurations */ |
Dave Airlie | 7ec700f | 2008-06-19 11:27:23 +1000 | [diff] [blame] | 153 | entry->busaddr[i] = pci_map_page(dev->pdev, entry->pagelist[i], |
David Miller | 296c6ae | 2009-02-12 02:15:34 -0800 | [diff] [blame] | 154 | 0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); |
Benjamin Herrenschmidt | a30f6fb | 2010-08-10 14:48:58 +1000 | [diff] [blame] | 155 | if (pci_dma_mapping_error(dev->pdev, entry->busaddr[i])) { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 156 | DRM_ERROR("unable to map PCIGART pages!\n"); |
Dave Airlie | ea98a92 | 2005-09-11 20:28:11 +1000 | [diff] [blame] | 157 | drm_ati_pcigart_cleanup(dev, gart_info); |
Dave Airlie | f26c473 | 2006-01-02 17:18:39 +1100 | [diff] [blame] | 158 | address = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | bus_address = 0; |
| 160 | goto done; |
| 161 | } |
| 162 | page_base = (u32) entry->busaddr[i]; |
| 163 | |
| 164 | for (j = 0; j < (PAGE_SIZE / ATI_PCIGART_PAGE_SIZE); j++) { |
David Miller | 5a7aad9 | 2009-02-12 02:15:27 -0800 | [diff] [blame] | 165 | u32 val; |
| 166 | |
Dave Airlie | f2b04cd | 2007-05-08 15:19:23 +1000 | [diff] [blame] | 167 | switch(gart_info->gart_reg_if) { |
| 168 | case DRM_ATI_GART_IGP: |
David Miller | 5a7aad9 | 2009-02-12 02:15:27 -0800 | [diff] [blame] | 169 | val = page_base | 0xc; |
Dave Airlie | f2b04cd | 2007-05-08 15:19:23 +1000 | [diff] [blame] | 170 | break; |
| 171 | case DRM_ATI_GART_PCIE: |
David Miller | 5a7aad9 | 2009-02-12 02:15:27 -0800 | [diff] [blame] | 172 | val = (page_base >> 8) | 0xc; |
Dave Airlie | f2b04cd | 2007-05-08 15:19:23 +1000 | [diff] [blame] | 173 | break; |
| 174 | default: |
| 175 | case DRM_ATI_GART_PCI: |
David Miller | 5a7aad9 | 2009-02-12 02:15:27 -0800 | [diff] [blame] | 176 | val = page_base; |
Dave Airlie | f2b04cd | 2007-05-08 15:19:23 +1000 | [diff] [blame] | 177 | break; |
| 178 | } |
David Miller | 5a7aad9 | 2009-02-12 02:15:27 -0800 | [diff] [blame] | 179 | if (gart_info->gart_table_location == |
| 180 | DRM_ATI_GART_MAIN) |
| 181 | pci_gart[gart_idx] = cpu_to_le32(val); |
| 182 | else |
| 183 | DRM_WRITE32(map, gart_idx * sizeof(u32), val); |
| 184 | gart_idx++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | page_base += ATI_PCIGART_PAGE_SIZE; |
| 186 | } |
| 187 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | ret = 1; |
| 189 | |
| 190 | #if defined(__i386__) || defined(__x86_64__) |
| 191 | wbinvd(); |
| 192 | #else |
| 193 | mb(); |
| 194 | #endif |
| 195 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 196 | done: |
Dave Airlie | ea98a92 | 2005-09-11 20:28:11 +1000 | [diff] [blame] | 197 | gart_info->addr = address; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 198 | gart_info->bus_addr = bus_address; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | return ret; |
| 200 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | EXPORT_SYMBOL(drm_ati_pcigart_init); |