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  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. {
  78.     int r;
  79.  
  80.     ENTER();
  81.  
  82.     if (rdev->gart.table.vram.robj == NULL) {
  83.         r = radeon_object_create(rdev, NULL,
  84.                      rdev->gart.table_size,
  85.                      true,
  86.                      RADEON_GEM_DOMAIN_VRAM,
  87.                      false, &rdev->gart.table.vram.robj);
  88.         if (r) {
  89.             return r;
  90.         }
  91.     }
  92.         return 0;
  93. }
  94.  
  95. int radeon_gart_table_vram_pin(struct radeon_device *rdev)
  96. {
  97.         uint64_t gpu_addr;
  98.         int r;
  99.  
  100.     r = radeon_object_pin(rdev->gart.table.vram.robj,
  101.                   RADEON_GEM_DOMAIN_VRAM, &gpu_addr);
  102.     if (r) {
  103. //        radeon_object_unref(&rdev->gart.table.vram.robj);
  104.         return r;
  105.     }
  106.     r = radeon_object_kmap(rdev->gart.table.vram.robj,
  107.                    (void **)&rdev->gart.table.vram.ptr);
  108.     if (r) {
  109. //        radeon_object_unpin(rdev->gart.table.vram.robj);
  110. //        radeon_object_unref(&rdev->gart.table.vram.robj);
  111.         DRM_ERROR("radeon: failed to map gart vram table.\n");
  112.         return r;
  113.     }
  114.  
  115.     rdev->gart.table_addr = gpu_addr;
  116.  
  117.     dbgprintf("alloc gart vram:  gpu_base %x lin_addr %x\n",
  118.                rdev->gart.table_addr, rdev->gart.table.vram.ptr);
  119.  
  120. //    gpu_addr = 0x800000;
  121.  
  122. //    u32_t pci_addr = rdev->mc.aper_base + gpu_addr;
  123.  
  124. //    rdev->gart.table.vram.ptr = (void*)MapIoMem(pci_addr, rdev->gart.table_size, PG_SW);
  125.  
  126.  
  127. //    dbgprintf("alloc gart vram:\n  gpu_base %x pci_base %x lin_addr %x",
  128. //               gpu_addr, pci_addr, rdev->gart.table.vram.ptr);
  129.  
  130.     return 0;
  131. }
  132.  
  133. void radeon_gart_table_vram_free(struct radeon_device *rdev)
  134. {
  135.         if (rdev->gart.table.vram.robj == NULL) {
  136.                 return;
  137.         }
  138. //   radeon_object_kunmap(rdev->gart.table.vram.robj);
  139. //   radeon_object_unpin(rdev->gart.table.vram.robj);
  140. //   radeon_object_unref(&rdev->gart.table.vram.robj);
  141. }
  142.  
  143.  
  144.  
  145.  
  146. /*
  147.  * Common gart functions.
  148.  */
  149. void radeon_gart_unbind(struct radeon_device *rdev, unsigned offset,
  150.                         int pages)
  151. {
  152.         unsigned t;
  153.         unsigned p;
  154.         int i, j;
  155.  
  156.         if (!rdev->gart.ready) {
  157. //       WARN(1, "trying to unbind memory to unitialized GART !\n");
  158.                 return;
  159.         }
  160.         t = offset / RADEON_GPU_PAGE_SIZE;
  161.         p = t / (PAGE_SIZE / RADEON_GPU_PAGE_SIZE);
  162.         for (i = 0; i < pages; i++, p++) {
  163.                 if (rdev->gart.pages[p]) {
  164. //           pci_unmap_page(rdev->pdev, rdev->gart.pages_addr[p],
  165. //                      PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
  166.                         rdev->gart.pages[p] = NULL;
  167.                         rdev->gart.pages_addr[p] = 0;
  168.                         for (j = 0; j < (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); j++, t++) {
  169.                                 radeon_gart_set_page(rdev, t, 0);
  170.                         }
  171.                 }
  172.         }
  173.         mb();
  174.         radeon_gart_tlb_flush(rdev);
  175. }
  176.  
  177. int radeon_gart_bind(struct radeon_device *rdev, unsigned offset,
  178.              int pages, u32_t *pagelist)
  179. {
  180.     unsigned t;
  181.     unsigned p;
  182.     uint64_t page_base;
  183.     int i, j;
  184.  
  185.     ENTER();
  186.  
  187.     dbgprintf("offset %x pages %x list %x\n",
  188.                offset, pages, pagelist);
  189.  
  190.     if (!rdev->gart.ready) {
  191.         DRM_ERROR("trying to bind memory to unitialized GART !\n");
  192.         return -EINVAL;
  193.     }
  194.         t = offset / RADEON_GPU_PAGE_SIZE;
  195.         p = t / (PAGE_SIZE / RADEON_GPU_PAGE_SIZE);
  196.  
  197.     for (i = 0; i < pages; i++, p++) {
  198.         /* we need to support large memory configurations */
  199.         /* assume that unbind have already been call on the range */
  200.  
  201.         rdev->gart.pages_addr[p] = pagelist[i] & ~4095;
  202.  
  203.         //if (pci_dma_mapping_error(rdev->pdev, rdev->gart.pages_addr[p])) {
  204.         //    /* FIXME: failed to map page (return -ENOMEM?) */
  205.         //    radeon_gart_unbind(rdev, offset, pages);
  206.         //    return -ENOMEM;
  207.         //}
  208.         rdev->gart.pages[p] = pagelist[i];
  209.                 page_base = rdev->gart.pages_addr[p];
  210.                 for (j = 0; j < (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); j++, t++) {
  211.             radeon_gart_set_page(rdev, t, page_base);
  212.                         page_base += RADEON_GPU_PAGE_SIZE;
  213.         }
  214.     }
  215.     mb();
  216.     radeon_gart_tlb_flush(rdev);
  217.  
  218.     LEAVE();
  219.  
  220.     return 0;
  221. }
  222.  
  223. int radeon_gart_init(struct radeon_device *rdev)
  224. {
  225.  
  226.     ENTER();
  227.  
  228.     if (rdev->gart.pages) {
  229.         return 0;
  230.     }
  231.         /* We need PAGE_SIZE >= RADEON_GPU_PAGE_SIZE */
  232.         if (PAGE_SIZE < RADEON_GPU_PAGE_SIZE) {
  233.         DRM_ERROR("Page size is smaller than GPU page size!\n");
  234.         return -EINVAL;
  235.     }
  236.     /* Compute table size */
  237.     rdev->gart.num_cpu_pages = rdev->mc.gtt_size / PAGE_SIZE;
  238.         rdev->gart.num_gpu_pages = rdev->mc.gtt_size / RADEON_GPU_PAGE_SIZE;
  239.     DRM_INFO("GART: num cpu pages %u, num gpu pages %u\n",
  240.          rdev->gart.num_cpu_pages, rdev->gart.num_gpu_pages);
  241.     /* Allocate pages table */
  242.     rdev->gart.pages = kzalloc(sizeof(void *) * rdev->gart.num_cpu_pages,
  243.                    GFP_KERNEL);
  244.     if (rdev->gart.pages == NULL) {
  245. //        radeon_gart_fini(rdev);
  246.         return -ENOMEM;
  247.     }
  248.     rdev->gart.pages_addr = kzalloc(sizeof(u32_t) *
  249.                     rdev->gart.num_cpu_pages, GFP_KERNEL);
  250.     if (rdev->gart.pages_addr == NULL) {
  251. //        radeon_gart_fini(rdev);
  252.         return -ENOMEM;
  253.     }
  254.     return 0;
  255. }
  256.  
  257. void radeon_gart_fini(struct radeon_device *rdev)
  258. {
  259.         if (rdev->gart.pages && rdev->gart.pages_addr && rdev->gart.ready) {
  260.                 /* unbind pages */
  261.                 radeon_gart_unbind(rdev, 0, rdev->gart.num_cpu_pages);
  262.         }
  263.         rdev->gart.ready = false;
  264.         kfree(rdev->gart.pages);
  265.         kfree(rdev->gart.pages_addr);
  266.         rdev->gart.pages = NULL;
  267.         rdev->gart.pages_addr = NULL;
  268. }
  269.