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 void 31 gf100_fb_intr(struct nvkm_fb *base) 32 { 33 struct gf100_fb *fb = gf100_fb(base); 34 struct nvkm_subdev *subdev = &fb->base.subdev; 35 struct nvkm_device *device = subdev->device; 36 u32 intr = nvkm_rd32(device, 0x000100); 37 if (intr & 0x08000000) 38 nvkm_debug(subdev, "PFFB intr\n"); 39 if (intr & 0x00002000) 40 nvkm_debug(subdev, "PBFB intr\n"); 41 } 42 43 int 44 gf100_fb_oneinit(struct nvkm_fb *base) 45 { 46 struct gf100_fb *fb = gf100_fb(base); 47 struct nvkm_device *device = fb->base.subdev.device; 48 int ret, size = 0x1000; 49 50 size = nvkm_longopt(device->cfgopt, "MmuDebugBufferSize", size); 51 size = min(size, 0x1000); 52 53 ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000, 54 true, &fb->base.mmu_rd); 55 if (ret) 56 return ret; 57 58 ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000, 59 true, &fb->base.mmu_wr); 60 if (ret) 61 return ret; 62 63 fb->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO); 64 if (fb->r100c10_page) { 65 fb->r100c10 = dma_map_page(device->dev, fb->r100c10_page, 0, 66 PAGE_SIZE, DMA_BIDIRECTIONAL); 67 if (dma_mapping_error(device->dev, fb->r100c10)) 68 return -EFAULT; 69 } 70 71 return 0; 72 } 73 74 int 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: nvkm_mask(device, 0x100c80, 0x00000001, 0x00000001); break; 80 case 17: nvkm_mask(device, 0x100c80, 0x00000001, 0x00000000); break; 81 default: 82 return -EINVAL; 83 } 84 return 0; 85 } 86 87 void 88 gf100_fb_init(struct nvkm_fb *base) 89 { 90 struct gf100_fb *fb = gf100_fb(base); 91 struct nvkm_device *device = fb->base.subdev.device; 92 93 if (fb->r100c10_page) 94 nvkm_wr32(device, 0x100c10, fb->r100c10 >> 8); 95 } 96 97 void * 98 gf100_fb_dtor(struct nvkm_fb *base) 99 { 100 struct gf100_fb *fb = gf100_fb(base); 101 struct nvkm_device *device = fb->base.subdev.device; 102 103 if (fb->r100c10_page) { 104 dma_unmap_page(device->dev, fb->r100c10, PAGE_SIZE, 105 DMA_BIDIRECTIONAL); 106 __free_page(fb->r100c10_page); 107 } 108 109 return fb; 110 } 111 112 int 113 gf100_fb_new_(const struct nvkm_fb_func *func, struct nvkm_device *device, 114 int index, struct nvkm_fb **pfb) 115 { 116 struct gf100_fb *fb; 117 118 if (!(fb = kzalloc(sizeof(*fb), GFP_KERNEL))) 119 return -ENOMEM; 120 nvkm_fb_ctor(func, device, index, &fb->base); 121 *pfb = &fb->base; 122 123 return 0; 124 } 125 126 static const struct nvkm_fb_func 127 gf100_fb = { 128 .dtor = gf100_fb_dtor, 129 .oneinit = gf100_fb_oneinit, 130 .init = gf100_fb_init, 131 .init_page = gf100_fb_init_page, 132 .intr = gf100_fb_intr, 133 .ram_new = gf100_ram_new, 134 .default_bigpage = 17, 135 }; 136 137 int 138 gf100_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb) 139 { 140 return gf100_fb_new_(&gf100_fb, device, index, pfb); 141 } 142