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