diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv20_fb.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv20_fb.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv20_fb.c b/drivers/gpu/drm/nouveau/nv20_fb.c new file mode 100644 index 000000000000..19bd64059a66 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nv20_fb.c @@ -0,0 +1,148 @@ +#include "drmP.h" +#include "drm.h" +#include "nouveau_drv.h" +#include "nouveau_drm.h" + +static struct drm_mm_node * +nv20_fb_alloc_tag(struct drm_device *dev, uint32_t size) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_fb_engine *pfb = &dev_priv->engine.fb; + struct drm_mm_node *mem; + int ret; + + ret = drm_mm_pre_get(&pfb->tag_heap); + if (ret) + return NULL; + + spin_lock(&dev_priv->tile.lock); + mem = drm_mm_search_free(&pfb->tag_heap, size, 0, 0); + if (mem) + mem = drm_mm_get_block_atomic(mem, size, 0); + spin_unlock(&dev_priv->tile.lock); + + return mem; +} + +static void +nv20_fb_free_tag(struct drm_device *dev, struct drm_mm_node **pmem) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct drm_mm_node *mem = *pmem; + if (mem) { + spin_lock(&dev_priv->tile.lock); + drm_mm_put_block(mem); + spin_unlock(&dev_priv->tile.lock); + *pmem = NULL; + } +} + +void +nv20_fb_init_tile_region(struct drm_device *dev, int i, uint32_t addr, + uint32_t size, uint32_t pitch, uint32_t flags) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_tile_reg *tile = &dev_priv->tile.reg[i]; + int bpp = (flags & NOUVEAU_GEM_TILE_32BPP ? 32 : 16); + + tile->addr = 0x00000001 | addr; + tile->limit = max(1u, addr + size) - 1; + tile->pitch = pitch; + + /* Allocate some of the on-die tag memory, used to store Z + * compression meta-data (most likely just a bitmap determining + * if a given tile is compressed or not). + */ + if (flags & NOUVEAU_GEM_TILE_ZETA) { + tile->tag_mem = nv20_fb_alloc_tag(dev, size / 256); + if (tile->tag_mem) { + /* Enable Z compression */ + tile->zcomp = tile->tag_mem->start; + if (dev_priv->chipset >= 0x25) { + if (bpp == 16) + tile->zcomp |= NV25_PFB_ZCOMP_MODE_16; + else + tile->zcomp |= NV25_PFB_ZCOMP_MODE_32; + } else { + tile->zcomp |= NV20_PFB_ZCOMP_EN; + if (bpp != 16) + tile->zcomp |= NV20_PFB_ZCOMP_MODE_32; + } + } + + tile->addr |= 2; + } +} + +void +nv20_fb_free_tile_region(struct drm_device *dev, int i) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_tile_reg *tile = &dev_priv->tile.reg[i]; + + tile->addr = tile->limit = tile->pitch = tile->zcomp = 0; + nv20_fb_free_tag(dev, &tile->tag_mem); +} + +void +nv20_fb_set_tile_region(struct drm_device *dev, int i) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_tile_reg *tile = &dev_priv->tile.reg[i]; + + nv_wr32(dev, NV10_PFB_TLIMIT(i), tile->limit); + nv_wr32(dev, NV10_PFB_TSIZE(i), tile->pitch); + nv_wr32(dev, NV10_PFB_TILE(i), tile->addr); + nv_wr32(dev, NV20_PFB_ZCOMP(i), tile->zcomp); +} + +int +nv20_fb_vram_init(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + u32 mem_size = nv_rd32(dev, 0x10020c); + u32 pbus1218 = nv_rd32(dev, 0x001218); + + dev_priv->vram_size = mem_size & 0xff000000; + switch (pbus1218 & 0x00000300) { + case 0x00000000: dev_priv->vram_type = NV_MEM_TYPE_SDRAM; break; + case 0x00000100: dev_priv->vram_type = NV_MEM_TYPE_DDR1; break; + case 0x00000200: dev_priv->vram_type = NV_MEM_TYPE_GDDR3; break; + case 0x00000300: dev_priv->vram_type = NV_MEM_TYPE_GDDR2; break; + } + + return 0; +} + +int +nv20_fb_init(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_fb_engine *pfb = &dev_priv->engine.fb; + int i; + + if (dev_priv->chipset >= 0x25) + drm_mm_init(&pfb->tag_heap, 0, 64 * 1024); + else + drm_mm_init(&pfb->tag_heap, 0, 32 * 1024); + + /* Turn all the tiling regions off. */ + pfb->num_tiles = NV10_PFB_TILE__SIZE; + for (i = 0; i < pfb->num_tiles; i++) + pfb->set_tile_region(dev, i); + + return 0; +} + +void +nv20_fb_takedown(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_fb_engine *pfb = &dev_priv->engine.fb; + int i; + + for (i = 0; i < pfb->num_tiles; i++) + pfb->free_tile_region(dev, i); + + drm_mm_takedown(&pfb->tag_heap); +} |