drivers/gpu/drm/nouveau/nv50_vram.c

   1 /*
   2  * Copyright 2010 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
  25 #include "drmP.h"
  26 #include "nouveau_drv.h"
  27 #include "nouveau_mm.h"
  28
  29 static int types[0x80] = {
  30         1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  31         1, 1, 1, 1, 0, 0, 0, 0, 2, 2, 2, 2, 0, 0, 0, 0,
  32         1, 1, 1, 1, 1, 1, 1, 0, 2, 2, 2, 2, 2, 2, 2, 0,
  33         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  34         1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 0, 0,
  35         0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  36         1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 2, 2, 2, 2,
  37         1, 0, 2, 0, 1, 0, 2, 0, 1, 1, 2, 2, 1, 1, 0, 0
  38 };
  39
  40 bool
  41 nv50_vram_flags_valid(struct drm_device *dev, u32 tile_flags)
  42 {
  43         int type = (tile_flags & NOUVEAU_GEM_TILE_LAYOUT_MASK) >> 8;
  44
  45         if (likely(type < ARRAY_SIZE(types) && types[type]))
  46                 return true;
  47         return false;
  48 }
  49
  50 void
  51 nv50_vram_del(struct drm_device *dev, struct nouveau_mem **pmem)
  52 {
  53         struct drm_nouveau_private *dev_priv = dev->dev_private;
  54         struct nouveau_mm *mm = &dev_priv->engine.vram.mm;
  55         struct nouveau_mm_node *this;
  56         struct nouveau_mem *mem;
  57
  58         mem = *pmem;
  59         *pmem = NULL;
  60         if (unlikely(mem == NULL))
  61                 return;
  62
  63         mutex_lock(&mm->mutex);
  64         while (!list_empty(&mem->regions)) {
  65                 this = list_first_entry(&mem->regions, struct nouveau_mm_node, rl_entry);
  66
  67                 list_del(&this->rl_entry);
  68                 nouveau_mm_put(mm, this);
  69         }
  70
  71         if (mem->tag) {
  72                 drm_mm_put_block(mem->tag);
  73                 mem->tag = NULL;
  74         }
  75         mutex_unlock(&mm->mutex);
  76
  77         kfree(mem);
  78 }
  79
  80 int
  81 nv50_vram_new(struct drm_device *dev, u64 size, u32 align, u32 size_nc,
  82               u32 memtype, struct nouveau_mem **pmem)
  83 {
  84         struct drm_nouveau_private *dev_priv = dev->dev_private;
  85         struct nouveau_mm *mm = &dev_priv->engine.vram.mm;
  86         struct nouveau_mm_node *r;
  87         struct nouveau_mem *mem;
  88         int comp = (memtype & 0x300) >> 8;
  89         int type = (memtype & 0x07f);
  90         int ret;
  91
  92         if (!types[type])
  93                 return -EINVAL;
  94         size >>= 12;
  95         align >>= 12;
  96         size_nc >>= 12;
  97
  98         mem = kzalloc(sizeof(*mem), GFP_KERNEL);
  99         if (!mem)
 100                 return -ENOMEM;
 101
 102         mutex_lock(&mm->mutex);
 103         if (comp) {
 104                 if (align == 16) {
 105                         struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
 106                         int n = (size >> 4) * comp;
 107
 108                         mem->tag = drm_mm_search_free(&pfb->tag_heap, n, 0, 0);
 109                         if (mem->tag)
 110                                 mem->tag = drm_mm_get_block(mem->tag, n, 0);
 111                 }
 112
 113                 if (unlikely(!mem->tag))
 114                         comp = 0;
 115         }
 116
 117         INIT_LIST_HEAD(&mem->regions);
 118         mem->dev = dev_priv->dev;
 119         mem->memtype = (comp << 7) | type;
 120         mem->size = size;
 121
 122         do {
 123                 ret = nouveau_mm_get(mm, types[type], size, size_nc, align, &r);
 124                 if (ret) {
 125                         mutex_unlock(&mm->mutex);
 126                         nv50_vram_del(dev, &mem);
 127                         return ret;
 128                 }
 129
 130                 list_add_tail(&r->rl_entry, &mem->regions);
 131                 size -= r->length;
 132         } while (size);
 133         mutex_unlock(&mm->mutex);
 134
 135         r = list_first_entry(&mem->regions, struct nouveau_mm_node, rl_entry);
 136         mem->offset = (u64)r->offset << 12;
 137         *pmem = mem;
 138         return 0;
 139 }
 140
 141 static u32
 142 nv50_vram_rblock(struct drm_device *dev)
 143 {
 144         struct drm_nouveau_private *dev_priv = dev->dev_private;
 145         int i, parts, colbits, rowbitsa, rowbitsb, banks;
 146         u64 rowsize, predicted;
 147         u32 r0, r4, rt, ru, rblock_size;
 148
 149         r0 = nv_rd32(dev, 0x100200);
 150         r4 = nv_rd32(dev, 0x100204);
 151         rt = nv_rd32(dev, 0x100250);
 152         ru = nv_rd32(dev, 0x001540);
 153         NV_DEBUG(dev, "memcfg 0x%08x 0x%08x 0x%08x 0x%08x\n", r0, r4, rt, ru);
 154
 155         for (i = 0, parts = 0; i < 8; i++) {
 156                 if (ru & (0x00010000 << i))
 157                         parts++;
 158         }
 159
 160         colbits  =  (r4 & 0x0000f000) >> 12;
 161         rowbitsa = ((r4 & 0x000f0000) >> 16) + 8;
 162         rowbitsb = ((r4 & 0x00f00000) >> 20) + 8;
 163         banks    = 1 << (((r4 & 0x03000000) >> 24) + 2);
 164
 165         rowsize = parts * banks * (1 << colbits) * 8;
 166         predicted = rowsize << rowbitsa;
 167         if (r0 & 0x00000004)
 168                 predicted += rowsize << rowbitsb;
 169
 170         if (predicted != dev_priv->vram_size) {
 171                 NV_WARN(dev, "memory controller reports %dMiB VRAM\n",
 172                         (u32)(dev_priv->vram_size >> 20));
 173                 NV_WARN(dev, "we calculated %dMiB VRAM\n",
 174                         (u32)(predicted >> 20));
 175         }
 176
 177         rblock_size = rowsize;
 178         if (rt & 1)
 179                 rblock_size *= 3;
 180
 181         NV_DEBUG(dev, "rblock %d bytes\n", rblock_size);
 182         return rblock_size;
 183 }
 184
 185 int
 186 nv50_vram_init(struct drm_device *dev)
 187 {
 188         struct drm_nouveau_private *dev_priv = dev->dev_private;
 189         struct nouveau_vram_engine *vram = &dev_priv->engine.vram;
 190         const u32 rsvd_head = ( 256 * 1024) >> 12; /* vga memory */
 191         const u32 rsvd_tail = (1024 * 1024) >> 12; /* vbios etc */
 192         u32 rblock, length;
 193
 194         dev_priv->vram_size  = nv_rd32(dev, 0x10020c);
 195         dev_priv->vram_size |= (dev_priv->vram_size & 0xff) << 32;
 196         dev_priv->vram_size &= 0xffffffff00ULL;
 197
 198         /* IGPs, no funky reordering happens here, they don't have VRAM */
 199         if (dev_priv->chipset == 0xaa ||
 200             dev_priv->chipset == 0xac ||
 201             dev_priv->chipset == 0xaf) {
 202                 dev_priv->vram_sys_base = (u64)nv_rd32(dev, 0x100e10) << 12;
 203                 rblock = 4096 >> 12;
 204         } else {
 205                 rblock = nv50_vram_rblock(dev) >> 12;
 206         }
 207
 208         length = (dev_priv->vram_size >> 12) - rsvd_head - rsvd_tail;
 209
 210         return nouveau_mm_init(&vram->mm, rsvd_head, length, rblock);
 211 }
 212
 213 void
 214 nv50_vram_fini(struct drm_device *dev)
 215 {
 216         struct drm_nouveau_private *dev_priv = dev->dev_private;
 217         struct nouveau_vram_engine *vram = &dev_priv->engine.vram;
 218
 219         nouveau_mm_fini(&vram->mm);
 220 }