drivers/gpu/drm/nouveau/nvc0_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 /* 0 = unsupported
  30  * 1 = non-compressed
  31  * 3 = compressed
  32  */
  33 static const u8 types[256] = {
  34         1, 1, 3, 3, 3, 3, 0, 3, 3, 3, 3, 0, 0, 0, 0, 0,
  35         0, 1, 0, 0, 0, 0, 0, 3, 3, 3, 3, 0, 0, 0, 0, 0,
  36         0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
  37         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 3, 3, 3, 3, 3,
  38         3, 3, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  39         0, 3, 3, 3, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  40         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  41         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0,
  42         0, 0, 0, 0, 0, 0, 3, 3, 3, 3, 0, 1, 1, 1, 1, 0,
  43         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  44         0, 0, 0, 3, 3, 3, 3, 1, 1, 1, 1, 0, 0, 0, 0, 0,
  45         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3,
  46         3, 3, 3, 3, 0, 0, 0, 0, 0, 0, 0, 0, 3, 3, 3, 3,
  47         3, 3, 0, 0, 0, 0, 0, 0, 3, 0, 0, 3, 0, 3, 0, 3,
  48         3, 0, 3, 3, 3, 3, 3, 0, 0, 3, 0, 3, 0, 3, 3, 0,
  49         3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 0, 1, 1, 0
  50 };
  51
  52 bool
  53 nvc0_vram_flags_valid(struct drm_device *dev, u32 tile_flags)
  54 {
  55         u8 memtype = (tile_flags & NOUVEAU_GEM_TILE_LAYOUT_MASK) >> 8;
  56         return likely((types[memtype] == 1));
  57 }
  58
  59 int
  60 nvc0_vram_new(struct drm_device *dev, u64 size, u32 align, u32 ncmin,
  61               u32 type, struct nouveau_mem **pmem)
  62 {
  63         struct drm_nouveau_private *dev_priv = dev->dev_private;
  64         struct nouveau_mm *mm = dev_priv->engine.vram.mm;
  65         struct nouveau_mm_node *r;
  66         struct nouveau_mem *mem;
  67         int ret;
  68
  69         size  >>= 12;
  70         align >>= 12;
  71         ncmin >>= 12;
  72
  73         mem = kzalloc(sizeof(*mem), GFP_KERNEL);
  74         if (!mem)
  75                 return -ENOMEM;
  76
  77         INIT_LIST_HEAD(&mem->regions);
  78         mem->dev = dev_priv->dev;
  79         mem->memtype = (type & 0xff);
  80         mem->size = size;
  81
  82         mutex_lock(&mm->mutex);
  83         do {
  84                 ret = nouveau_mm_get(mm, 1, size, ncmin, align, &r);
  85                 if (ret) {
  86                         mutex_unlock(&mm->mutex);
  87                         nv50_vram_del(dev, &mem);
  88                         return ret;
  89                 }
  90
  91                 list_add_tail(&r->rl_entry, &mem->regions);
  92                 size -= r->length;
  93         } while (size);
  94         mutex_unlock(&mm->mutex);
  95
  96         r = list_first_entry(&mem->regions, struct nouveau_mm_node, rl_entry);
  97         mem->offset = (u64)r->offset << 12;
  98         *pmem = mem;
  99         return 0;
 100 }
 101
 102 int
 103 nvc0_vram_init(struct drm_device *dev)
 104 {
 105         struct drm_nouveau_private *dev_priv = dev->dev_private;
 106         struct nouveau_vram_engine *vram = &dev_priv->engine.vram;
 107         const u32 rsvd_head = ( 256 * 1024) >> 12; /* vga memory */
 108         const u32 rsvd_tail = (1024 * 1024) >> 12; /* vbios etc */
 109         u32 length;
 110
 111         dev_priv->vram_size  = nv_rd32(dev, 0x10f20c) << 20;
 112         dev_priv->vram_size *= nv_rd32(dev, 0x121c74);
 113
 114         length = (dev_priv->vram_size >> 12) - rsvd_head - rsvd_tail;
 115
 116         return nouveau_mm_init(&vram->mm, rsvd_head, length, 1);
 117 }