kernel/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv04.c

   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 nv04_instmem(p) container_of((p), struct nv04_instmem, base)
  25 #include "priv.h"
  26
  27 #include <core/memory.h>
  28 #include <core/ramht.h>
  29
  30 struct nv04_instmem {
  31         struct nvkm_instmem base;
  32         struct nvkm_mm heap;
  33 };
  34
  35 /******************************************************************************
  36  * instmem object implementation
  37  *****************************************************************************/
  38 #define nv04_instobj(p) container_of((p), struct nv04_instobj, memory)
  39
  40 struct nv04_instobj {
  41         struct nvkm_memory memory;
  42         struct nv04_instmem *imem;
  43         struct nvkm_mm_node *node;
  44 };
  45
  46 static enum nvkm_memory_target
  47 nv04_instobj_target(struct nvkm_memory *memory)
  48 {
  49         return NVKM_MEM_TARGET_INST;
  50 }
  51
  52 static u64
  53 nv04_instobj_addr(struct nvkm_memory *memory)
  54 {
  55         return nv04_instobj(memory)->node->offset;
  56 }
  57
  58 static u64
  59 nv04_instobj_size(struct nvkm_memory *memory)
  60 {
  61         return nv04_instobj(memory)->node->length;
  62 }
  63
  64 static void __iomem *
  65 nv04_instobj_acquire(struct nvkm_memory *memory)
  66 {
  67         struct nv04_instobj *iobj = nv04_instobj(memory);
  68         struct nvkm_device *device = iobj->imem->base.subdev.device;
  69         return device->pri + 0x700000 + iobj->node->offset;
  70 }
  71
  72 static void
  73 nv04_instobj_release(struct nvkm_memory *memory)
  74 {
  75 }
  76
  77 static u32
  78 nv04_instobj_rd32(struct nvkm_memory *memory, u64 offset)
  79 {
  80         struct nv04_instobj *iobj = nv04_instobj(memory);
  81         struct nvkm_device *device = iobj->imem->base.subdev.device;
  82         return nvkm_rd32(device, 0x700000 + iobj->node->offset + offset);
  83 }
  84
  85 static void
  86 nv04_instobj_wr32(struct nvkm_memory *memory, u64 offset, u32 data)
  87 {
  88         struct nv04_instobj *iobj = nv04_instobj(memory);
  89         struct nvkm_device *device = iobj->imem->base.subdev.device;
  90         nvkm_wr32(device, 0x700000 + iobj->node->offset + offset, data);
  91 }
  92
  93 static void *
  94 nv04_instobj_dtor(struct nvkm_memory *memory)
  95 {
  96         struct nv04_instobj *iobj = nv04_instobj(memory);
  97         mutex_lock(&iobj->imem->base.subdev.mutex);
  98         nvkm_mm_free(&iobj->imem->heap, &iobj->node);
  99         mutex_unlock(&iobj->imem->base.subdev.mutex);
 100         return iobj;
 101 }
 102
 103 static const struct nvkm_memory_func
 104 nv04_instobj_func = {
 105         .dtor = nv04_instobj_dtor,
 106         .target = nv04_instobj_target,
 107         .size = nv04_instobj_size,
 108         .addr = nv04_instobj_addr,
 109         .acquire = nv04_instobj_acquire,
 110         .release = nv04_instobj_release,
 111         .rd32 = nv04_instobj_rd32,
 112         .wr32 = nv04_instobj_wr32,
 113 };
 114
 115 static int
 116 nv04_instobj_new(struct nvkm_instmem *base, u32 size, u32 align, bool zero,
 117                  struct nvkm_memory **pmemory)
 118 {
 119         struct nv04_instmem *imem = nv04_instmem(base);
 120         struct nv04_instobj *iobj;
 121         int ret;
 122
 123         if (!(iobj = kzalloc(sizeof(*iobj), GFP_KERNEL)))
 124                 return -ENOMEM;
 125         *pmemory = &iobj->memory;
 126
 127         nvkm_memory_ctor(&nv04_instobj_func, &iobj->memory);
 128         iobj->imem = imem;
 129
 130         mutex_lock(&imem->base.subdev.mutex);
 131         ret = nvkm_mm_head(&imem->heap, 0, 1, size, size,
 132                            align ? align : 1, &iobj->node);
 133         mutex_unlock(&imem->base.subdev.mutex);
 134         return ret;
 135 }
 136
 137 /******************************************************************************
 138  * instmem subdev implementation
 139  *****************************************************************************/
 140
 141 static u32
 142 nv04_instmem_rd32(struct nvkm_instmem *imem, u32 addr)
 143 {
 144         return nvkm_rd32(imem->subdev.device, 0x700000 + addr);
 145 }
 146
 147 static void
 148 nv04_instmem_wr32(struct nvkm_instmem *imem, u32 addr, u32 data)
 149 {
 150         nvkm_wr32(imem->subdev.device, 0x700000 + addr, data);
 151 }
 152
 153 static int
 154 nv04_instmem_oneinit(struct nvkm_instmem *base)
 155 {
 156         struct nv04_instmem *imem = nv04_instmem(base);
 157         struct nvkm_device *device = imem->base.subdev.device;
 158         int ret;
 159
 160         /* PRAMIN aperture maps over the end of VRAM, reserve it */
 161         imem->base.reserved = 512 * 1024;
 162
 163         ret = nvkm_mm_init(&imem->heap, 0, imem->base.reserved, 1);
 164         if (ret)
 165                 return ret;
 166
 167         /* 0x00000-0x10000: reserve for probable vbios image */
 168         ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x10000, 0, false,
 169                               &imem->base.vbios);
 170         if (ret)
 171                 return ret;
 172
 173         /* 0x10000-0x18000: reserve for RAMHT */
 174         ret = nvkm_ramht_new(device, 0x08000, 0, NULL, &imem->base.ramht);
 175         if (ret)
 176                 return ret;
 177
 178         /* 0x18000-0x18800: reserve for RAMFC (enough for 32 nv30 channels) */
 179         ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x00800, 0, true,
 180                               &imem->base.ramfc);
 181         if (ret)
 182                 return ret;
 183
 184         /* 0x18800-0x18a00: reserve for RAMRO */
 185         ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x00200, 0, false,
 186                               &imem->base.ramro);
 187         if (ret)
 188                 return ret;
 189
 190         return 0;
 191 }
 192
 193 static void *
 194 nv04_instmem_dtor(struct nvkm_instmem *base)
 195 {
 196         struct nv04_instmem *imem = nv04_instmem(base);
 197         nvkm_memory_del(&imem->base.ramfc);
 198         nvkm_memory_del(&imem->base.ramro);
 199         nvkm_ramht_del(&imem->base.ramht);
 200         nvkm_memory_del(&imem->base.vbios);
 201         nvkm_mm_fini(&imem->heap);
 202         return imem;
 203 }
 204
 205 static const struct nvkm_instmem_func
 206 nv04_instmem = {
 207         .dtor = nv04_instmem_dtor,
 208         .oneinit = nv04_instmem_oneinit,
 209         .rd32 = nv04_instmem_rd32,
 210         .wr32 = nv04_instmem_wr32,
 211         .memory_new = nv04_instobj_new,
 212         .persistent = false,
 213         .zero = false,
 214 };
 215
 216 int
 217 nv04_instmem_new(struct nvkm_device *device, int index,
 218                  struct nvkm_instmem **pimem)
 219 {
 220         struct nv04_instmem *imem;
 221
 222         if (!(imem = kzalloc(sizeof(*imem), GFP_KERNEL)))
 223                 return -ENOMEM;
 224         nvkm_instmem_ctor(&nv04_instmem, device, index, &imem->base);
 225         *pimem = &imem->base;
 226         return 0;
 227 }