diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/fb/nv30.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/fb/nv30.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/nv30.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/nv30.c new file mode 100644 index 000000000000..cbec402ba5b9 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/nv30.c @@ -0,0 +1,139 @@ +/* + * Copyright (C) 2010 Francisco Jerez. + * All Rights Reserved. + * + * 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 (including the + * next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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. + * + */ + +#include "nv04.h" + +void +nv30_fb_tile_init(struct nouveau_fb *pfb, int i, u32 addr, u32 size, u32 pitch, + u32 flags, struct nouveau_fb_tile *tile) +{ + /* for performance, select alternate bank offset for zeta */ + if (!(flags & 4)) { + tile->addr = (0 << 4); + } else { + if (pfb->tile.comp) /* z compression */ + pfb->tile.comp(pfb, i, size, flags, tile); + tile->addr = (1 << 4); + } + + tile->addr |= 0x00000001; /* enable */ + tile->addr |= addr; + tile->limit = max(1u, addr + size) - 1; + tile->pitch = pitch; +} + +static void +nv30_fb_tile_comp(struct nouveau_fb *pfb, int i, u32 size, u32 flags, + struct nouveau_fb_tile *tile) +{ + u32 tiles = DIV_ROUND_UP(size, 0x40); + u32 tags = round_up(tiles / pfb->ram->parts, 0x40); + if (!nouveau_mm_head(&pfb->tags, 0, 1, tags, tags, 1, &tile->tag)) { + if (flags & 2) tile->zcomp |= 0x01000000; /* Z16 */ + else tile->zcomp |= 0x02000000; /* Z24S8 */ + tile->zcomp |= ((tile->tag->offset ) >> 6); + tile->zcomp |= ((tile->tag->offset + tags - 1) >> 6) << 12; +#ifdef __BIG_ENDIAN + tile->zcomp |= 0x10000000; +#endif + } +} + +static int +calc_bias(struct nv04_fb_priv *priv, int k, int i, int j) +{ + struct nouveau_device *device = nv_device(priv); + int b = (device->chipset > 0x30 ? + nv_rd32(priv, 0x122c + 0x10 * k + 0x4 * j) >> (4 * (i ^ 1)) : + 0) & 0xf; + + return 2 * (b & 0x8 ? b - 0x10 : b); +} + +static int +calc_ref(struct nv04_fb_priv *priv, int l, int k, int i) +{ + int j, x = 0; + + for (j = 0; j < 4; j++) { + int m = (l >> (8 * i) & 0xff) + calc_bias(priv, k, i, j); + + x |= (0x80 | clamp(m, 0, 0x1f)) << (8 * j); + } + + return x; +} + +int +nv30_fb_init(struct nouveau_object *object) +{ + struct nouveau_device *device = nv_device(object); + struct nv04_fb_priv *priv = (void *)object; + int ret, i, j; + + ret = nouveau_fb_init(&priv->base); + if (ret) + return ret; + + /* Init the memory timing regs at 0x10037c/0x1003ac */ + if (device->chipset == 0x30 || + device->chipset == 0x31 || + device->chipset == 0x35) { + /* Related to ROP count */ + int n = (device->chipset == 0x31 ? 2 : 4); + int l = nv_rd32(priv, 0x1003d0); + + for (i = 0; i < n; i++) { + for (j = 0; j < 3; j++) + nv_wr32(priv, 0x10037c + 0xc * i + 0x4 * j, + calc_ref(priv, l, 0, j)); + + for (j = 0; j < 2; j++) + nv_wr32(priv, 0x1003ac + 0x8 * i + 0x4 * j, + calc_ref(priv, l, 1, j)); + } + } + + return 0; +} + +struct nouveau_oclass * +nv30_fb_oclass = &(struct nv04_fb_impl) { + .base.base.handle = NV_SUBDEV(FB, 0x30), + .base.base.ofuncs = &(struct nouveau_ofuncs) { + .ctor = nv04_fb_ctor, + .dtor = _nouveau_fb_dtor, + .init = nv30_fb_init, + .fini = _nouveau_fb_fini, + }, + .base.memtype = nv04_fb_memtype_valid, + .base.ram = &nv20_ram_oclass, + .tile.regions = 8, + .tile.init = nv30_fb_tile_init, + .tile.comp = nv30_fb_tile_comp, + .tile.fini = nv20_fb_tile_fini, + .tile.prog = nv20_fb_tile_prog, +}.base.base; |