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 26 extern const u8 gf100_pte_storage_type_map[256]; 27 28 bool 29 gf100_fb_memtype_valid(struct nvkm_fb *fb, u32 tile_flags) 30 { 31 u8 memtype = (tile_flags & 0x0000ff00) >> 8; 32 return likely((gf100_pte_storage_type_map[memtype] != 0xff)); 33 } 34 35 static void 36 gf100_fb_intr(struct nvkm_subdev *subdev) 37 { 38 struct nvkm_device *device = subdev->device; 39 u32 intr = nvkm_rd32(device, 0x000100); 40 if (intr & 0x08000000) 41 nvkm_debug(subdev, "PFFB intr\n"); 42 if (intr & 0x00002000) 43 nvkm_debug(subdev, "PBFB intr\n"); 44 } 45 46 int 47 gf100_fb_init(struct nvkm_object *object) 48 { 49 struct gf100_fb *fb = (void *)object; 50 struct nvkm_device *device = fb->base.subdev.device; 51 int ret; 52 53 ret = nvkm_fb_init(&fb->base); 54 if (ret) 55 return ret; 56 57 if (fb->r100c10_page) 58 nvkm_wr32(device, 0x100c10, fb->r100c10 >> 8); 59 60 nvkm_mask(device, 0x100c80, 0x00000001, 0x00000000); /* 128KiB lpg */ 61 return 0; 62 } 63 64 void 65 gf100_fb_dtor(struct nvkm_object *object) 66 { 67 struct nvkm_device *device = nv_device(object); 68 struct gf100_fb *fb = (void *)object; 69 70 if (fb->r100c10_page) { 71 dma_unmap_page(nv_device_base(device), fb->r100c10, PAGE_SIZE, 72 DMA_BIDIRECTIONAL); 73 __free_page(fb->r100c10_page); 74 } 75 76 nvkm_fb_destroy(&fb->base); 77 } 78 79 int 80 gf100_fb_ctor(struct nvkm_object *parent, struct nvkm_object *engine, 81 struct nvkm_oclass *oclass, void *data, u32 size, 82 struct nvkm_object **pobject) 83 { 84 struct nvkm_device *device = nv_device(parent); 85 struct gf100_fb *fb; 86 int ret; 87 88 ret = nvkm_fb_create(parent, engine, oclass, &fb); 89 *pobject = nv_object(fb); 90 if (ret) 91 return ret; 92 93 fb->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO); 94 if (fb->r100c10_page) { 95 fb->r100c10 = dma_map_page(nv_device_base(device), 96 fb->r100c10_page, 0, PAGE_SIZE, 97 DMA_BIDIRECTIONAL); 98 if (dma_mapping_error(nv_device_base(device), fb->r100c10)) 99 return -EFAULT; 100 } 101 102 nv_subdev(fb)->intr = gf100_fb_intr; 103 return 0; 104 } 105 106 struct nvkm_oclass * 107 gf100_fb_oclass = &(struct nvkm_fb_impl) { 108 .base.handle = NV_SUBDEV(FB, 0xc0), 109 .base.ofuncs = &(struct nvkm_ofuncs) { 110 .ctor = gf100_fb_ctor, 111 .dtor = gf100_fb_dtor, 112 .init = gf100_fb_init, 113 .fini = _nvkm_fb_fini, 114 }, 115 .memtype = gf100_fb_memtype_valid, 116 .ram = &gf100_ram_oclass, 117 }.base; 118