diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_vram.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv50_vram.c | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_vram.c b/drivers/gpu/drm/nouveau/nv50_vram.c new file mode 100644 index 00000000..9ed9ae39 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nv50_vram.c @@ -0,0 +1,237 @@ +/* + * Copyright 2010 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Ben Skeggs + */ + +#include "drmP.h" +#include "nouveau_drv.h" +#include "nouveau_mm.h" + +static int types[0x80] = { + 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 1, 1, 1, 1, 0, 0, 0, 0, 2, 2, 2, 2, 0, 0, 0, 0, + 1, 1, 1, 1, 1, 1, 1, 0, 2, 2, 2, 2, 2, 2, 2, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 0, 0, + 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 2, 2, 2, 2, + 1, 0, 2, 0, 1, 0, 2, 0, 1, 1, 2, 2, 1, 1, 0, 0 +}; + +bool +nv50_vram_flags_valid(struct drm_device *dev, u32 tile_flags) +{ + int type = (tile_flags & NOUVEAU_GEM_TILE_LAYOUT_MASK) >> 8; + + if (likely(type < ARRAY_SIZE(types) && types[type])) + return true; + return false; +} + +void +nv50_vram_del(struct drm_device *dev, struct nouveau_mem **pmem) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_mm *mm = &dev_priv->engine.vram.mm; + struct nouveau_mm_node *this; + struct nouveau_mem *mem; + + mem = *pmem; + *pmem = NULL; + if (unlikely(mem == NULL)) + return; + + mutex_lock(&mm->mutex); + while (!list_empty(&mem->regions)) { + this = list_first_entry(&mem->regions, struct nouveau_mm_node, rl_entry); + + list_del(&this->rl_entry); + nouveau_mm_put(mm, this); + } + + if (mem->tag) { + drm_mm_put_block(mem->tag); + mem->tag = NULL; + } + mutex_unlock(&mm->mutex); + + kfree(mem); +} + +int +nv50_vram_new(struct drm_device *dev, u64 size, u32 align, u32 size_nc, + u32 memtype, struct nouveau_mem **pmem) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_mm *mm = &dev_priv->engine.vram.mm; + struct nouveau_mm_node *r; + struct nouveau_mem *mem; + int comp = (memtype & 0x300) >> 8; + int type = (memtype & 0x07f); + int ret; + + if (!types[type]) + return -EINVAL; + size >>= 12; + align >>= 12; + size_nc >>= 12; + + mem = kzalloc(sizeof(*mem), GFP_KERNEL); + if (!mem) + return -ENOMEM; + + mutex_lock(&mm->mutex); + if (comp) { + if (align == 16) { + struct nouveau_fb_engine *pfb = &dev_priv->engine.fb; + int n = (size >> 4) * comp; + + mem->tag = drm_mm_search_free(&pfb->tag_heap, n, 0, 0); + if (mem->tag) + mem->tag = drm_mm_get_block(mem->tag, n, 0); + } + + if (unlikely(!mem->tag)) + comp = 0; + } + + INIT_LIST_HEAD(&mem->regions); + mem->dev = dev_priv->dev; + mem->memtype = (comp << 7) | type; + mem->size = size; + + do { + ret = nouveau_mm_get(mm, types[type], size, size_nc, align, &r); + if (ret) { + mutex_unlock(&mm->mutex); + nv50_vram_del(dev, &mem); + return ret; + } + + list_add_tail(&r->rl_entry, &mem->regions); + size -= r->length; + } while (size); + mutex_unlock(&mm->mutex); + + r = list_first_entry(&mem->regions, struct nouveau_mm_node, rl_entry); + mem->offset = (u64)r->offset << 12; + *pmem = mem; + return 0; +} + +static u32 +nv50_vram_rblock(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + int i, parts, colbits, rowbitsa, rowbitsb, banks; + u64 rowsize, predicted; + u32 r0, r4, rt, ru, rblock_size; + + r0 = nv_rd32(dev, 0x100200); + r4 = nv_rd32(dev, 0x100204); + rt = nv_rd32(dev, 0x100250); + ru = nv_rd32(dev, 0x001540); + NV_DEBUG(dev, "memcfg 0x%08x 0x%08x 0x%08x 0x%08x\n", r0, r4, rt, ru); + + for (i = 0, parts = 0; i < 8; i++) { + if (ru & (0x00010000 << i)) + parts++; + } + + colbits = (r4 & 0x0000f000) >> 12; + rowbitsa = ((r4 & 0x000f0000) >> 16) + 8; + rowbitsb = ((r4 & 0x00f00000) >> 20) + 8; + banks = 1 << (((r4 & 0x03000000) >> 24) + 2); + + rowsize = parts * banks * (1 << colbits) * 8; + predicted = rowsize << rowbitsa; + if (r0 & 0x00000004) + predicted += rowsize << rowbitsb; + + if (predicted != dev_priv->vram_size) { + NV_WARN(dev, "memory controller reports %dMiB VRAM\n", + (u32)(dev_priv->vram_size >> 20)); + NV_WARN(dev, "we calculated %dMiB VRAM\n", + (u32)(predicted >> 20)); + } + + rblock_size = rowsize; + if (rt & 1) + rblock_size *= 3; + + NV_DEBUG(dev, "rblock %d bytes\n", rblock_size); + return rblock_size; +} + +int +nv50_vram_init(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_vram_engine *vram = &dev_priv->engine.vram; + const u32 rsvd_head = ( 256 * 1024) >> 12; /* vga memory */ + const u32 rsvd_tail = (1024 * 1024) >> 12; /* vbios etc */ + u32 pfb714 = nv_rd32(dev, 0x100714); + u32 rblock, length; + + switch (pfb714 & 0x00000007) { + case 0: dev_priv->vram_type = NV_MEM_TYPE_DDR1; break; + case 1: + if (nouveau_mem_vbios_type(dev) == NV_MEM_TYPE_DDR3) + dev_priv->vram_type = NV_MEM_TYPE_DDR3; + else + dev_priv->vram_type = NV_MEM_TYPE_DDR2; + break; + case 2: dev_priv->vram_type = NV_MEM_TYPE_GDDR3; break; + case 3: dev_priv->vram_type = NV_MEM_TYPE_GDDR4; break; + case 4: dev_priv->vram_type = NV_MEM_TYPE_GDDR5; break; + default: + break; + } + + dev_priv->vram_rank_B = !!(nv_rd32(dev, 0x100200) & 0x4); + dev_priv->vram_size = nv_rd32(dev, 0x10020c); + dev_priv->vram_size |= (dev_priv->vram_size & 0xff) << 32; + dev_priv->vram_size &= 0xffffffff00ULL; + + /* IGPs, no funky reordering happens here, they don't have VRAM */ + if (dev_priv->chipset == 0xaa || + dev_priv->chipset == 0xac || + dev_priv->chipset == 0xaf) { + dev_priv->vram_sys_base = (u64)nv_rd32(dev, 0x100e10) << 12; + rblock = 4096 >> 12; + } else { + rblock = nv50_vram_rblock(dev) >> 12; + } + + length = (dev_priv->vram_size >> 12) - rsvd_head - rsvd_tail; + + return nouveau_mm_init(&vram->mm, rsvd_head, length, rblock); +} + +void +nv50_vram_fini(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_vram_engine *vram = &dev_priv->engine.vram; + + nouveau_mm_fini(&vram->mm); +} |