1 /* 2 * Copyright 2012 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Ben Skeggs 23 */ 24 #include "gf100.h" 25 #include "ram.h" 26 27 #include <core/memory.h> 28 #include <core/option.h> 29 30 extern const u8 gf100_pte_storage_type_map[256]; 31 32 bool 33 gf100_fb_memtype_valid(struct nvkm_fb *fb, u32 tile_flags) 34 { 35 u8 memtype = (tile_flags & 0x0000ff00) >> 8; 36 return likely((gf100_pte_storage_type_map[memtype] != 0xff)); 37 } 38 39 void 40 gf100_fb_intr(struct nvkm_fb *base) 41 { 42 struct gf100_fb *fb = gf100_fb(base); 43 struct nvkm_subdev *subdev = &fb->base.subdev; 44 struct nvkm_device *device = subdev->device; 45 u32 intr = nvkm_rd32(device, 0x000100); 46 if (intr & 0x08000000) 47 nvkm_debug(subdev, "PFFB intr\n"); 48 if (intr & 0x00002000) 49 nvkm_debug(subdev, "PBFB intr\n"); 50 } 51 52 int 53 gf100_fb_oneinit(struct nvkm_fb *fb) 54 { 55 struct nvkm_device *device = fb->subdev.device; 56 int ret, size = 0x1000; 57 58 size = nvkm_longopt(device->cfgopt, "MmuDebugBufferSize", size); 59 size = min(size, 0x1000); 60 61 ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000, 62 false, &fb->mmu_rd); 63 if (ret) 64 return ret; 65 66 ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000, 67 false, &fb->mmu_wr); 68 if (ret) 69 return ret; 70 71 return 0; 72 } 73 74 void 75 gf100_fb_init_page(struct nvkm_fb *fb) 76 { 77 struct nvkm_device *device = fb->subdev.device; 78 switch (fb->page) { 79 case 16: 80 nvkm_mask(device, 0x100c80, 0x00000001, 0x00000001); 81 break; 82 case 17: 83 default: 84 nvkm_mask(device, 0x100c80, 0x00000001, 0x00000000); 85 fb->page = 17; 86 break; 87 } 88 } 89 90 void 91 gf100_fb_init(struct nvkm_fb *base) 92 { 93 struct gf100_fb *fb = gf100_fb(base); 94 struct nvkm_device *device = fb->base.subdev.device; 95 96 if (fb->r100c10_page) 97 nvkm_wr32(device, 0x100c10, fb->r100c10 >> 8); 98 } 99 100 void * 101 gf100_fb_dtor(struct nvkm_fb *base) 102 { 103 struct gf100_fb *fb = gf100_fb(base); 104 struct nvkm_device *device = fb->base.subdev.device; 105 106 if (fb->r100c10_page) { 107 dma_unmap_page(device->dev, fb->r100c10, PAGE_SIZE, 108 DMA_BIDIRECTIONAL); 109 __free_page(fb->r100c10_page); 110 } 111 112 return fb; 113 } 114 115 int 116 gf100_fb_new_(const struct nvkm_fb_func *func, struct nvkm_device *device, 117 int index, struct nvkm_fb **pfb) 118 { 119 struct gf100_fb *fb; 120 121 if (!(fb = kzalloc(sizeof(*fb), GFP_KERNEL))) 122 return -ENOMEM; 123 nvkm_fb_ctor(func, device, index, &fb->base); 124 *pfb = &fb->base; 125 126 fb->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO); 127 if (fb->r100c10_page) { 128 fb->r100c10 = dma_map_page(device->dev, fb->r100c10_page, 0, 129 PAGE_SIZE, DMA_BIDIRECTIONAL); 130 if (dma_mapping_error(device->dev, fb->r100c10)) 131 return -EFAULT; 132 } 133 134 return 0; 135 } 136 137 static const struct nvkm_fb_func 138 gf100_fb = { 139 .dtor = gf100_fb_dtor, 140 .oneinit = gf100_fb_oneinit, 141 .init = gf100_fb_init, 142 .init_page = gf100_fb_init_page, 143 .intr = gf100_fb_intr, 144 .ram_new = gf100_ram_new, 145 .memtype_valid = gf100_fb_memtype_valid, 146 }; 147 148 int 149 gf100_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb) 150 { 151 return gf100_fb_new_(&gf100_fb, device, index, pfb); 152 } 153