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 #include <core/device.h> 27 28 extern const u8 gf100_pte_storage_type_map[256]; 29 30 bool 31 gf100_fb_memtype_valid(struct nvkm_fb *pfb, u32 tile_flags) 32 { 33 u8 memtype = (tile_flags & 0x0000ff00) >> 8; 34 return likely((gf100_pte_storage_type_map[memtype] != 0xff)); 35 } 36 37 static void 38 gf100_fb_intr(struct nvkm_subdev *subdev) 39 { 40 struct gf100_fb_priv *priv = (void *)subdev; 41 u32 intr = nv_rd32(priv, 0x000100); 42 if (intr & 0x08000000) { 43 nv_debug(priv, "PFFB intr\n"); 44 intr &= ~0x08000000; 45 } 46 if (intr & 0x00002000) { 47 nv_debug(priv, "PBFB intr\n"); 48 intr &= ~0x00002000; 49 } 50 } 51 52 int 53 gf100_fb_init(struct nvkm_object *object) 54 { 55 struct gf100_fb_priv *priv = (void *)object; 56 int ret; 57 58 ret = nvkm_fb_init(&priv->base); 59 if (ret) 60 return ret; 61 62 if (priv->r100c10_page) 63 nv_wr32(priv, 0x100c10, priv->r100c10 >> 8); 64 65 nv_mask(priv, 0x100c80, 0x00000001, 0x00000000); /* 128KiB lpg */ 66 return 0; 67 } 68 69 void 70 gf100_fb_dtor(struct nvkm_object *object) 71 { 72 struct nvkm_device *device = nv_device(object); 73 struct gf100_fb_priv *priv = (void *)object; 74 75 if (priv->r100c10_page) { 76 dma_unmap_page(nv_device_base(device), priv->r100c10, PAGE_SIZE, 77 DMA_BIDIRECTIONAL); 78 __free_page(priv->r100c10_page); 79 } 80 81 nvkm_fb_destroy(&priv->base); 82 } 83 84 int 85 gf100_fb_ctor(struct nvkm_object *parent, struct nvkm_object *engine, 86 struct nvkm_oclass *oclass, void *data, u32 size, 87 struct nvkm_object **pobject) 88 { 89 struct nvkm_device *device = nv_device(parent); 90 struct gf100_fb_priv *priv; 91 int ret; 92 93 ret = nvkm_fb_create(parent, engine, oclass, &priv); 94 *pobject = nv_object(priv); 95 if (ret) 96 return ret; 97 98 priv->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO); 99 if (priv->r100c10_page) { 100 priv->r100c10 = dma_map_page(nv_device_base(device), 101 priv->r100c10_page, 0, PAGE_SIZE, 102 DMA_BIDIRECTIONAL); 103 if (dma_mapping_error(nv_device_base(device), priv->r100c10)) 104 return -EFAULT; 105 } 106 107 nv_subdev(priv)->intr = gf100_fb_intr; 108 return 0; 109 } 110 111 struct nvkm_oclass * 112 gf100_fb_oclass = &(struct nvkm_fb_impl) { 113 .base.handle = NV_SUBDEV(FB, 0xc0), 114 .base.ofuncs = &(struct nvkm_ofuncs) { 115 .ctor = gf100_fb_ctor, 116 .dtor = gf100_fb_dtor, 117 .init = gf100_fb_init, 118 .fini = _nvkm_fb_fini, 119 }, 120 .memtype = gf100_fb_memtype_valid, 121 .ram = &gf100_ram_oclass, 122 }.base; 123