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 #define nv50_instmem(p) container_of((p), struct nv50_instmem, base) 25 #include "priv.h" 26 27 #include <core/memory.h> 28 #include <subdev/bar.h> 29 #include <subdev/fb.h> 30 #include <subdev/mmu.h> 31 32 struct nv50_instmem { 33 struct nvkm_instmem base; 34 unsigned long lock_flags; 35 spinlock_t lock; 36 u64 addr; 37 }; 38 39 /****************************************************************************** 40 * instmem object implementation 41 *****************************************************************************/ 42 #define nv50_instobj(p) container_of((p), struct nv50_instobj, memory) 43 44 struct nv50_instobj { 45 struct nvkm_memory memory; 46 struct nv50_instmem *imem; 47 struct nvkm_mem *mem; 48 struct nvkm_vma bar; 49 void *map; 50 }; 51 52 static enum nvkm_memory_target 53 nv50_instobj_target(struct nvkm_memory *memory) 54 { 55 return NVKM_MEM_TARGET_VRAM; 56 } 57 58 static u64 59 nv50_instobj_addr(struct nvkm_memory *memory) 60 { 61 return nv50_instobj(memory)->mem->offset; 62 } 63 64 static u64 65 nv50_instobj_size(struct nvkm_memory *memory) 66 { 67 return (u64)nv50_instobj(memory)->mem->size << NVKM_RAM_MM_SHIFT; 68 } 69 70 static void 71 nv50_instobj_boot(struct nvkm_memory *memory, struct nvkm_vm *vm) 72 { 73 struct nv50_instobj *iobj = nv50_instobj(memory); 74 struct nvkm_subdev *subdev = &iobj->imem->base.subdev; 75 struct nvkm_device *device = subdev->device; 76 u64 size = nvkm_memory_size(memory); 77 void __iomem *map; 78 int ret; 79 80 iobj->map = ERR_PTR(-ENOMEM); 81 82 ret = nvkm_vm_get(vm, size, 12, NV_MEM_ACCESS_RW, &iobj->bar); 83 if (ret == 0) { 84 map = ioremap(device->func->resource_addr(device, 3) + 85 (u32)iobj->bar.offset, size); 86 if (map) { 87 nvkm_memory_map(memory, &iobj->bar, 0); 88 iobj->map = map; 89 } else { 90 nvkm_warn(subdev, "PRAMIN ioremap failed\n"); 91 nvkm_vm_put(&iobj->bar); 92 } 93 } else { 94 nvkm_warn(subdev, "PRAMIN exhausted\n"); 95 } 96 } 97 98 static void 99 nv50_instobj_release(struct nvkm_memory *memory) 100 { 101 struct nv50_instmem *imem = nv50_instobj(memory)->imem; 102 spin_unlock_irqrestore(&imem->lock, imem->lock_flags); 103 } 104 105 static void __iomem * 106 nv50_instobj_acquire(struct nvkm_memory *memory) 107 { 108 struct nv50_instobj *iobj = nv50_instobj(memory); 109 struct nv50_instmem *imem = iobj->imem; 110 struct nvkm_bar *bar = imem->base.subdev.device->bar; 111 struct nvkm_vm *vm; 112 unsigned long flags; 113 114 if (!iobj->map && (vm = nvkm_bar_kmap(bar))) 115 nvkm_memory_boot(memory, vm); 116 if (!IS_ERR_OR_NULL(iobj->map)) 117 return iobj->map; 118 119 spin_lock_irqsave(&imem->lock, flags); 120 imem->lock_flags = flags; 121 return NULL; 122 } 123 124 static u32 125 nv50_instobj_rd32(struct nvkm_memory *memory, u64 offset) 126 { 127 struct nv50_instobj *iobj = nv50_instobj(memory); 128 struct nv50_instmem *imem = iobj->imem; 129 struct nvkm_device *device = imem->base.subdev.device; 130 u64 base = (iobj->mem->offset + offset) & 0xffffff00000ULL; 131 u64 addr = (iobj->mem->offset + offset) & 0x000000fffffULL; 132 u32 data; 133 134 if (unlikely(imem->addr != base)) { 135 nvkm_wr32(device, 0x001700, base >> 16); 136 imem->addr = base; 137 } 138 data = nvkm_rd32(device, 0x700000 + addr); 139 return data; 140 } 141 142 static void 143 nv50_instobj_wr32(struct nvkm_memory *memory, u64 offset, u32 data) 144 { 145 struct nv50_instobj *iobj = nv50_instobj(memory); 146 struct nv50_instmem *imem = iobj->imem; 147 struct nvkm_device *device = imem->base.subdev.device; 148 u64 base = (iobj->mem->offset + offset) & 0xffffff00000ULL; 149 u64 addr = (iobj->mem->offset + offset) & 0x000000fffffULL; 150 151 if (unlikely(imem->addr != base)) { 152 nvkm_wr32(device, 0x001700, base >> 16); 153 imem->addr = base; 154 } 155 nvkm_wr32(device, 0x700000 + addr, data); 156 } 157 158 static void 159 nv50_instobj_map(struct nvkm_memory *memory, struct nvkm_vma *vma, u64 offset) 160 { 161 struct nv50_instobj *iobj = nv50_instobj(memory); 162 nvkm_vm_map_at(vma, offset, iobj->mem); 163 } 164 165 static void * 166 nv50_instobj_dtor(struct nvkm_memory *memory) 167 { 168 struct nv50_instobj *iobj = nv50_instobj(memory); 169 struct nvkm_ram *ram = iobj->imem->base.subdev.device->fb->ram; 170 if (!IS_ERR_OR_NULL(iobj->map)) { 171 nvkm_vm_put(&iobj->bar); 172 iounmap(iobj->map); 173 } 174 ram->func->put(ram, &iobj->mem); 175 return iobj; 176 } 177 178 static const struct nvkm_memory_func 179 nv50_instobj_func = { 180 .dtor = nv50_instobj_dtor, 181 .target = nv50_instobj_target, 182 .size = nv50_instobj_size, 183 .addr = nv50_instobj_addr, 184 .boot = nv50_instobj_boot, 185 .acquire = nv50_instobj_acquire, 186 .release = nv50_instobj_release, 187 .rd32 = nv50_instobj_rd32, 188 .wr32 = nv50_instobj_wr32, 189 .map = nv50_instobj_map, 190 }; 191 192 static int 193 nv50_instobj_new(struct nvkm_instmem *base, u32 size, u32 align, bool zero, 194 struct nvkm_memory **pmemory) 195 { 196 struct nv50_instmem *imem = nv50_instmem(base); 197 struct nv50_instobj *iobj; 198 struct nvkm_ram *ram = imem->base.subdev.device->fb->ram; 199 int ret; 200 201 if (!(iobj = kzalloc(sizeof(*iobj), GFP_KERNEL))) 202 return -ENOMEM; 203 *pmemory = &iobj->memory; 204 205 nvkm_memory_ctor(&nv50_instobj_func, &iobj->memory); 206 iobj->imem = imem; 207 208 size = max((size + 4095) & ~4095, (u32)4096); 209 align = max((align + 4095) & ~4095, (u32)4096); 210 211 ret = ram->func->get(ram, size, align, 0, 0x800, &iobj->mem); 212 if (ret) 213 return ret; 214 215 iobj->mem->page_shift = 12; 216 return 0; 217 } 218 219 /****************************************************************************** 220 * instmem subdev implementation 221 *****************************************************************************/ 222 223 static void 224 nv50_instmem_fini(struct nvkm_instmem *base) 225 { 226 nv50_instmem(base)->addr = ~0ULL; 227 } 228 229 static const struct nvkm_instmem_func 230 nv50_instmem = { 231 .fini = nv50_instmem_fini, 232 .memory_new = nv50_instobj_new, 233 .persistent = false, 234 .zero = false, 235 }; 236 237 int 238 nv50_instmem_new(struct nvkm_device *device, int index, 239 struct nvkm_instmem **pimem) 240 { 241 struct nv50_instmem *imem; 242 243 if (!(imem = kzalloc(sizeof(*imem), GFP_KERNEL))) 244 return -ENOMEM; 245 nvkm_instmem_ctor(&nv50_instmem, device, index, &imem->base); 246 spin_lock_init(&imem->lock); 247 *pimem = &imem->base; 248 return 0; 249 } 250