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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. #if 0
  34. /*
  35.  * Common GART table functions.
  36.  */
  37. int radeon_gart_table_ram_alloc(struct radeon_device *rdev)
  38. {
  39.         void *ptr;
  40.  
  41.         ptr = pci_alloc_consistent(rdev->pdev, rdev->gart.table_size,
  42.                                    &rdev->gart.table_addr);
  43.         if (ptr == NULL) {
  44.                 return -ENOMEM;
  45.         }
  46. #ifdef CONFIG_X86
  47.         if (rdev->family == CHIP_RS400 || rdev->family == CHIP_RS480 ||
  48.             rdev->family == CHIP_RS690 || rdev->family == CHIP_RS740) {
  49.                 set_memory_uc((unsigned long)ptr,
  50.                               rdev->gart.table_size >> PAGE_SHIFT);
  51.         }
  52. #endif
  53.         rdev->gart.table.ram.ptr = ptr;
  54.         memset((void *)rdev->gart.table.ram.ptr, 0, rdev->gart.table_size);
  55.         return 0;
  56. }
  57.  
  58. void radeon_gart_table_ram_free(struct radeon_device *rdev)
  59. {
  60.         if (rdev->gart.table.ram.ptr == NULL) {
  61.                 return;
  62.         }
  63. #ifdef CONFIG_X86
  64.         if (rdev->family == CHIP_RS400 || rdev->family == CHIP_RS480 ||
  65.             rdev->family == CHIP_RS690 || rdev->family == CHIP_RS740) {
  66.                 set_memory_wb((unsigned long)rdev->gart.table.ram.ptr,
  67.                               rdev->gart.table_size >> PAGE_SHIFT);
  68.         }
  69. #endif
  70.         pci_free_consistent(rdev->pdev, rdev->gart.table_size,
  71.                             (void *)rdev->gart.table.ram.ptr,
  72.                             rdev->gart.table_addr);
  73.         rdev->gart.table.ram.ptr = NULL;
  74.         rdev->gart.table_addr = 0;
  75. }
  76. #endif
  77.  
  78. int radeon_gart_table_vram_alloc(struct radeon_device *rdev)
  79. {
  80.     uint32_t gpu_addr;
  81.     int r;
  82.  
  83.     dbgprintf("%s\n",__FUNCTION__);
  84.  
  85.     if (rdev->gart.table.vram.robj == NULL) {
  86.         r = radeon_object_create(rdev, NULL,
  87.                      rdev->gart.table_size,
  88.                      true,
  89.                      RADEON_GEM_DOMAIN_VRAM,
  90.                      false, &rdev->gart.table.vram.robj);
  91.         if (r) {
  92.             return r;
  93.         }
  94.     }
  95.     r = radeon_object_pin(rdev->gart.table.vram.robj,
  96.                   RADEON_GEM_DOMAIN_VRAM, &gpu_addr);
  97.     if (r) {
  98. //        radeon_object_unref(&rdev->gart.table.vram.robj);
  99.         return r;
  100.     }
  101.     r = radeon_object_kmap(rdev->gart.table.vram.robj,
  102.                    (void **)&rdev->gart.table.vram.ptr);
  103.     if (r) {
  104. //        radeon_object_unpin(rdev->gart.table.vram.robj);
  105. //        radeon_object_unref(&rdev->gart.table.vram.robj);
  106.         DRM_ERROR("radeon: failed to map gart vram table.\n");
  107.         return r;
  108.     }
  109.  
  110.     rdev->gart.table_addr = gpu_addr;
  111.  
  112.     dbgprintf("alloc gart vram:  gpu_base %x lin_addr %x\n",
  113.                rdev->gart.table_addr, rdev->gart.table.vram.ptr);
  114.  
  115. //    gpu_addr = 0x800000;
  116.  
  117. //    u32_t pci_addr = rdev->mc.aper_base + gpu_addr;
  118.  
  119. //    rdev->gart.table.vram.ptr = (void*)MapIoMem(pci_addr, rdev->gart.table_size, PG_SW);
  120.  
  121.  
  122. //    dbgprintf("alloc gart vram:\n  gpu_base %x pci_base %x lin_addr %x",
  123. //               gpu_addr, pci_addr, rdev->gart.table.vram.ptr);
  124.  
  125.     return 0;
  126. }
  127.  
  128. void radeon_gart_table_vram_free(struct radeon_device *rdev)
  129. {
  130.         if (rdev->gart.table.vram.robj == NULL) {
  131.                 return;
  132.         }
  133. //   radeon_object_kunmap(rdev->gart.table.vram.robj);
  134. //   radeon_object_unpin(rdev->gart.table.vram.robj);
  135. //   radeon_object_unref(&rdev->gart.table.vram.robj);
  136. }
  137.  
  138.  
  139.  
  140.  
  141. /*
  142.  * Common gart functions.
  143.  */
  144. void radeon_gart_unbind(struct radeon_device *rdev, unsigned offset,
  145.                         int pages)
  146. {
  147.         unsigned t;
  148.         unsigned p;
  149.         int i, j;
  150.  
  151.         if (!rdev->gart.ready) {
  152. //       WARN(1, "trying to unbind memory to unitialized GART !\n");
  153.                 return;
  154.         }
  155.         t = offset / 4096;
  156.         p = t / (PAGE_SIZE / 4096);
  157.         for (i = 0; i < pages; i++, p++) {
  158.                 if (rdev->gart.pages[p]) {
  159. //           pci_unmap_page(rdev->pdev, rdev->gart.pages_addr[p],
  160. //                      PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
  161.                         rdev->gart.pages[p] = NULL;
  162.                         rdev->gart.pages_addr[p] = 0;
  163.                         for (j = 0; j < (PAGE_SIZE / 4096); j++, t++) {
  164.                                 radeon_gart_set_page(rdev, t, 0);
  165.                         }
  166.                 }
  167.         }
  168.         mb();
  169.         radeon_gart_tlb_flush(rdev);
  170. }
  171.  
  172. int radeon_gart_bind(struct radeon_device *rdev, unsigned offset,
  173.              int pages, u32_t *pagelist)
  174. {
  175.     unsigned t;
  176.     unsigned p;
  177.     uint64_t page_base;
  178.     int i, j;
  179.  
  180.     dbgprintf("%s  ",__FUNCTION__);
  181.     dbgprintf("offset %x pages %x list %x\n",
  182.                offset, pages, pagelist);
  183.  
  184.     if (!rdev->gart.ready) {
  185.         DRM_ERROR("trying to bind memory to unitialized GART !\n");
  186.         return -EINVAL;
  187.     }
  188.     t = offset / 4096;
  189.     p = t / (PAGE_SIZE / 4096);
  190.  
  191.     for (i = 0; i < pages; i++, p++) {
  192.         /* we need to support large memory configurations */
  193.         /* assume that unbind have already been call on the range */
  194.  
  195.         rdev->gart.pages_addr[p] = pagelist[i] & ~4095;
  196.  
  197.         //if (pci_dma_mapping_error(rdev->pdev, rdev->gart.pages_addr[p])) {
  198.         //    /* FIXME: failed to map page (return -ENOMEM?) */
  199.         //    radeon_gart_unbind(rdev, offset, pages);
  200.         //    return -ENOMEM;
  201.         //}
  202.         rdev->gart.pages[p] = pagelist[i];
  203.         page_base = (uint32_t)rdev->gart.pages_addr[p];
  204.         for (j = 0; j < (PAGE_SIZE / 4096); j++, t++) {
  205.             radeon_gart_set_page(rdev, t, page_base);
  206.             page_base += 4096;
  207.         }
  208.     }
  209.     mb();
  210.     radeon_gart_tlb_flush(rdev);
  211.  
  212.     dbgprintf("done %s\n",__FUNCTION__);
  213.  
  214.     return 0;
  215. }
  216.  
  217. int radeon_gart_init(struct radeon_device *rdev)
  218. {
  219.  
  220.     dbgprintf("%s\n",__FUNCTION__);
  221.  
  222.     if (rdev->gart.pages) {
  223.         return 0;
  224.     }
  225.     /* We need PAGE_SIZE >= 4096 */
  226.     if (PAGE_SIZE < 4096) {
  227.         DRM_ERROR("Page size is smaller than GPU page size!\n");
  228.         return -EINVAL;
  229.     }
  230.     /* Compute table size */
  231.     rdev->gart.num_cpu_pages = rdev->mc.gtt_size / PAGE_SIZE;
  232.     rdev->gart.num_gpu_pages = rdev->mc.gtt_size / 4096;
  233.     DRM_INFO("GART: num cpu pages %u, num gpu pages %u\n",
  234.          rdev->gart.num_cpu_pages, rdev->gart.num_gpu_pages);
  235.     /* Allocate pages table */
  236.     rdev->gart.pages = kzalloc(sizeof(void *) * rdev->gart.num_cpu_pages,
  237.                    GFP_KERNEL);
  238.     if (rdev->gart.pages == NULL) {
  239. //        radeon_gart_fini(rdev);
  240.         return -ENOMEM;
  241.     }
  242.     rdev->gart.pages_addr = kzalloc(sizeof(u32_t) *
  243.                     rdev->gart.num_cpu_pages, GFP_KERNEL);
  244.     if (rdev->gart.pages_addr == NULL) {
  245. //        radeon_gart_fini(rdev);
  246.         return -ENOMEM;
  247.     }
  248.     return 0;
  249. }
  250.  
  251. void radeon_gart_fini(struct radeon_device *rdev)
  252. {
  253.         if (rdev->gart.pages && rdev->gart.pages_addr && rdev->gart.ready) {
  254.                 /* unbind pages */
  255.                 radeon_gart_unbind(rdev, 0, rdev->gart.num_cpu_pages);
  256.         }
  257.         rdev->gart.ready = false;
  258.         kfree(rdev->gart.pages);
  259.         kfree(rdev->gart.pages_addr);
  260.         rdev->gart.pages = NULL;
  261.         rdev->gart.pages_addr = NULL;
  262. }
  263.