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drm/nouveau/fb: split tile and compression region handling 

This is in preparation for extending the support to the remaining
chipsets, to allow for sharing more functions.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2012-10-09 15:41:09 +10:00
parent de2b8b8bbb
commit 67e9e9f6ca
2 changed files with 28 additions and 19 deletions
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2
drivers/gpu/drm/nouveau/core/include/subdev/fb.h
View File

@ -84,6 +84,8 @@ struct nouveau_fb {
int regions;
void (*init)(struct nouveau_fb *, int i, u32 addr, u32 size,
u32 pitch, u32 flags, struct nouveau_fb_tile *);
void (*comp)(struct nouveau_fb *, int i, u32 size, u32 flags,
struct nouveau_fb_tile *);
void (*fini)(struct nouveau_fb *, int i,
struct nouveau_fb_tile *);
void (*prog)(struct nouveau_fb *, int i,

21
drivers/gpu/drm/nouveau/core/subdev/fb/nv20.c
View File

@ -34,19 +34,28 @@ static void
nv20_fb_tile_init(struct nouveau_fb *pfb, int i, u32 addr, u32 size, u32 pitch,
u32 flags, struct nouveau_fb_tile *tile)
{
struct nouveau_device *device = nv_device(pfb);
int bpp = (flags & 2) ? 32 : 16;
tile->addr = 0x00000001 | addr;
tile->limit = max(1u, addr + size) - 1;
tile->pitch = pitch;
if (flags & 4) {
pfb->tile.comp(pfb, i, size, flags, tile);
tile->addr |= 2;
}
}
static void
nv20_fb_tile_comp(struct nouveau_fb *pfb, int i, u32 size, u32 flags,
struct nouveau_fb_tile *tile)
{
struct nouveau_device *device = nv_device(pfb);
int bpp = (flags & 2) ? 32 : 16;
/* 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).
*/
size /= 256;
if (flags & 4) {
if (!nouveau_mm_head(&pfb->tags, 1, size, size, 1, &tile->tag)) {
/* Enable Z compression */
tile->zcomp = tile->tag->offset;
@ -61,9 +70,6 @@ nv20_fb_tile_init(struct nouveau_fb *pfb, int i, u32 addr, u32 size, u32 pitch,
tile->zcomp |= 0x04000000;
}
}
tile->addr |= 2;
}
}
static void
@ -119,6 +125,7 @@ nv20_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
priv->base.memtype_valid = nv04_fb_memtype_valid;
priv->base.tile.regions = 8;
priv->base.tile.init = nv20_fb_tile_init;
priv->base.tile.comp = nv20_fb_tile_comp;
priv->base.tile.fini = nv20_fb_tile_fini;
priv->base.tile.prog = nv20_fb_tile_prog;
return nouveau_fb_created(&priv->base);