1 /* 2 * Copyright 2015 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 <bskeggs@redhat.com> 23 */ 24 #define nvkm_vram(p) container_of((p), struct nvkm_vram, memory) 25 #include "ram.h" 26 27 #include <core/memory.h> 28 #include <subdev/instmem.h> 29 #include <subdev/mmu.h> 30 31 struct nvkm_vram { 32 struct nvkm_memory memory; 33 struct nvkm_ram *ram; 34 u8 page; 35 struct nvkm_mm_node *mn; 36 }; 37 38 static int 39 nvkm_vram_kmap(struct nvkm_memory *memory, struct nvkm_memory **pmemory) 40 { 41 return nvkm_instobj_wrap(nvkm_vram(memory)->ram->fb->subdev.device, memory, pmemory); 42 } 43 44 static int 45 nvkm_vram_map(struct nvkm_memory *memory, u64 offset, struct nvkm_vmm *vmm, 46 struct nvkm_vma *vma, void *argv, u32 argc) 47 { 48 struct nvkm_vram *vram = nvkm_vram(memory); 49 struct nvkm_vmm_map map = { 50 .memory = &vram->memory, 51 .offset = offset, 52 .mem = vram->mn, 53 }; 54 55 return nvkm_vmm_map(vmm, vma, argv, argc, &map); 56 } 57 58 static u64 59 nvkm_vram_size(struct nvkm_memory *memory) 60 { 61 return (u64)nvkm_mm_size(nvkm_vram(memory)->mn) << NVKM_RAM_MM_SHIFT; 62 } 63 64 static u64 65 nvkm_vram_addr(struct nvkm_memory *memory) 66 { 67 struct nvkm_vram *vram = nvkm_vram(memory); 68 if (!nvkm_mm_contiguous(vram->mn)) 69 return ~0ULL; 70 return (u64)nvkm_mm_addr(vram->mn) << NVKM_RAM_MM_SHIFT; 71 } 72 73 static u8 74 nvkm_vram_page(struct nvkm_memory *memory) 75 { 76 return nvkm_vram(memory)->page; 77 } 78 79 static enum nvkm_memory_target 80 nvkm_vram_target(struct nvkm_memory *memory) 81 { 82 return NVKM_MEM_TARGET_VRAM; 83 } 84 85 static void * 86 nvkm_vram_dtor(struct nvkm_memory *memory) 87 { 88 struct nvkm_vram *vram = nvkm_vram(memory); 89 struct nvkm_mm_node *next = vram->mn; 90 struct nvkm_mm_node *node; 91 mutex_lock(&vram->ram->mutex); 92 while ((node = next)) { 93 next = node->next; 94 nvkm_mm_free(&vram->ram->vram, &node); 95 } 96 mutex_unlock(&vram->ram->mutex); 97 return vram; 98 } 99 100 static const struct nvkm_memory_func 101 nvkm_vram = { 102 .dtor = nvkm_vram_dtor, 103 .target = nvkm_vram_target, 104 .page = nvkm_vram_page, 105 .addr = nvkm_vram_addr, 106 .size = nvkm_vram_size, 107 .map = nvkm_vram_map, 108 .kmap = nvkm_vram_kmap, 109 }; 110 111 int 112 nvkm_ram_get(struct nvkm_device *device, u8 heap, u8 type, u8 rpage, u64 size, 113 bool contig, bool back, struct nvkm_memory **pmemory) 114 { 115 struct nvkm_ram *ram; 116 struct nvkm_mm *mm; 117 struct nvkm_mm_node **node, *r; 118 struct nvkm_vram *vram; 119 u8 page = max(rpage, (u8)NVKM_RAM_MM_SHIFT); 120 u32 align = (1 << page) >> NVKM_RAM_MM_SHIFT; 121 u32 max = ALIGN(size, 1 << page) >> NVKM_RAM_MM_SHIFT; 122 u32 min = contig ? max : align; 123 int ret; 124 125 if (!device->fb || !(ram = device->fb->ram)) 126 return -ENODEV; 127 ram = device->fb->ram; 128 mm = &ram->vram; 129 130 if (!(vram = kzalloc(sizeof(*vram), GFP_KERNEL))) 131 return -ENOMEM; 132 nvkm_memory_ctor(&nvkm_vram, &vram->memory); 133 vram->ram = ram; 134 vram->page = page; 135 *pmemory = &vram->memory; 136 137 mutex_lock(&ram->mutex); 138 node = &vram->mn; 139 do { 140 if (back) 141 ret = nvkm_mm_tail(mm, heap, type, max, min, align, &r); 142 else 143 ret = nvkm_mm_head(mm, heap, type, max, min, align, &r); 144 if (ret) { 145 mutex_unlock(&ram->mutex); 146 nvkm_memory_unref(pmemory); 147 return ret; 148 } 149 150 *node = r; 151 node = &r->next; 152 max -= r->length; 153 } while (max); 154 mutex_unlock(&ram->mutex); 155 return 0; 156 } 157 158 int 159 nvkm_ram_init(struct nvkm_ram *ram) 160 { 161 if (ram->func->init) 162 return ram->func->init(ram); 163 return 0; 164 } 165 166 void 167 nvkm_ram_del(struct nvkm_ram **pram) 168 { 169 struct nvkm_ram *ram = *pram; 170 if (ram && !WARN_ON(!ram->func)) { 171 if (ram->func->dtor) 172 *pram = ram->func->dtor(ram); 173 nvkm_mm_fini(&ram->vram); 174 mutex_destroy(&ram->mutex); 175 kfree(*pram); 176 *pram = NULL; 177 } 178 } 179 180 int 181 nvkm_ram_ctor(const struct nvkm_ram_func *func, struct nvkm_fb *fb, 182 enum nvkm_ram_type type, u64 size, struct nvkm_ram *ram) 183 { 184 static const char *name[] = { 185 [NVKM_RAM_TYPE_UNKNOWN] = "of unknown memory type", 186 [NVKM_RAM_TYPE_STOLEN ] = "stolen system memory", 187 [NVKM_RAM_TYPE_SGRAM ] = "SGRAM", 188 [NVKM_RAM_TYPE_SDRAM ] = "SDRAM", 189 [NVKM_RAM_TYPE_DDR1 ] = "DDR1", 190 [NVKM_RAM_TYPE_DDR2 ] = "DDR2", 191 [NVKM_RAM_TYPE_DDR3 ] = "DDR3", 192 [NVKM_RAM_TYPE_GDDR2 ] = "GDDR2", 193 [NVKM_RAM_TYPE_GDDR3 ] = "GDDR3", 194 [NVKM_RAM_TYPE_GDDR4 ] = "GDDR4", 195 [NVKM_RAM_TYPE_GDDR5 ] = "GDDR5", 196 [NVKM_RAM_TYPE_GDDR5X ] = "GDDR5X", 197 [NVKM_RAM_TYPE_GDDR6 ] = "GDDR6", 198 [NVKM_RAM_TYPE_HBM2 ] = "HBM2", 199 }; 200 struct nvkm_subdev *subdev = &fb->subdev; 201 int ret; 202 203 nvkm_info(subdev, "%d MiB %s\n", (int)(size >> 20), name[type]); 204 ram->func = func; 205 ram->fb = fb; 206 ram->type = type; 207 ram->size = size; 208 mutex_init(&ram->mutex); 209 210 if (!nvkm_mm_initialised(&ram->vram)) { 211 ret = nvkm_mm_init(&ram->vram, NVKM_RAM_MM_NORMAL, 0, 212 size >> NVKM_RAM_MM_SHIFT, 1); 213 if (ret) 214 return ret; 215 } 216 217 return 0; 218 } 219 220 int 221 nvkm_ram_new_(const struct nvkm_ram_func *func, struct nvkm_fb *fb, 222 enum nvkm_ram_type type, u64 size, struct nvkm_ram **pram) 223 { 224 if (!(*pram = kzalloc(sizeof(**pram), GFP_KERNEL))) 225 return -ENOMEM; 226 return nvkm_ram_ctor(func, fb, type, size, *pram); 227 } 228