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 #include <subdev/therm.h> 30 31 void 32 gf100_fb_intr(struct nvkm_fb *base) 33 { 34 struct gf100_fb *fb = gf100_fb(base); 35 struct nvkm_subdev *subdev = &fb->base.subdev; 36 struct nvkm_device *device = subdev->device; 37 u32 intr = nvkm_rd32(device, 0x000100); 38 if (intr & 0x08000000) 39 nvkm_debug(subdev, "PFFB intr\n"); 40 if (intr & 0x00002000) 41 nvkm_debug(subdev, "PBFB intr\n"); 42 } 43 44 int 45 gf100_fb_oneinit(struct nvkm_fb *base) 46 { 47 struct gf100_fb *fb = gf100_fb(base); 48 struct nvkm_device *device = fb->base.subdev.device; 49 int ret, size = 1 << (fb->base.page ? fb->base.page : 17); 50 51 size = nvkm_longopt(device->cfgopt, "MmuDebugBufferSize", size); 52 size = max(size, 0x1000); 53 54 ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000, 55 true, &fb->base.mmu_rd); 56 if (ret) 57 return ret; 58 59 ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000, 60 true, &fb->base.mmu_wr); 61 if (ret) 62 return ret; 63 64 fb->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO); 65 if (fb->r100c10_page) { 66 fb->r100c10 = dma_map_page(device->dev, fb->r100c10_page, 0, 67 PAGE_SIZE, DMA_BIDIRECTIONAL); 68 if (dma_mapping_error(device->dev, fb->r100c10)) 69 return -EFAULT; 70 } 71 72 return 0; 73 } 74 75 int 76 gf100_fb_init_page(struct nvkm_fb *fb) 77 { 78 struct nvkm_device *device = fb->subdev.device; 79 switch (fb->page) { 80 case 16: nvkm_mask(device, 0x100c80, 0x00000001, 0x00000001); break; 81 case 17: nvkm_mask(device, 0x100c80, 0x00000001, 0x00000000); break; 82 default: 83 return -EINVAL; 84 } 85 return 0; 86 } 87 88 void 89 gf100_fb_init(struct nvkm_fb *base) 90 { 91 struct gf100_fb *fb = gf100_fb(base); 92 struct nvkm_device *device = fb->base.subdev.device; 93 94 if (fb->r100c10_page) 95 nvkm_wr32(device, 0x100c10, fb->r100c10 >> 8); 96 97 if (base->func->clkgate_pack) { 98 nvkm_therm_clkgate_init(device->therm, 99 base->func->clkgate_pack); 100 } 101 } 102 103 void * 104 gf100_fb_dtor(struct nvkm_fb *base) 105 { 106 struct gf100_fb *fb = gf100_fb(base); 107 struct nvkm_device *device = fb->base.subdev.device; 108 109 if (fb->r100c10_page) { 110 dma_unmap_page(device->dev, fb->r100c10, PAGE_SIZE, 111 DMA_BIDIRECTIONAL); 112 __free_page(fb->r100c10_page); 113 } 114 115 return fb; 116 } 117 118 int 119 gf100_fb_new_(const struct nvkm_fb_func *func, struct nvkm_device *device, 120 enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb) 121 { 122 struct gf100_fb *fb; 123 124 if (!(fb = kzalloc(sizeof(*fb), GFP_KERNEL))) 125 return -ENOMEM; 126 nvkm_fb_ctor(func, device, type, inst, &fb->base); 127 *pfb = &fb->base; 128 129 return 0; 130 } 131 132 static const struct nvkm_fb_func 133 gf100_fb = { 134 .dtor = gf100_fb_dtor, 135 .oneinit = gf100_fb_oneinit, 136 .init = gf100_fb_init, 137 .init_page = gf100_fb_init_page, 138 .intr = gf100_fb_intr, 139 .ram_new = gf100_ram_new, 140 .default_bigpage = 17, 141 }; 142 143 int 144 gf100_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb) 145 { 146 return gf100_fb_new_(&gf100_fb, device, type, inst, pfb); 147 } 148