subdev/fb/nv20.c

0001 /*
0002  * Copyright (C) 2010 Francisco Jerez.
0003  * All Rights Reserved.
0004  *
0005  * Permission is hereby granted, free of charge, to any person obtaining
0006  * a copy of this software and associated documentation files (the
0007  * "Software"), to deal in the Software without restriction, including
0008  * without limitation the rights to use, copy, modify, merge, publish,
0009  * distribute, sublicense, and/or sell copies of the Software, and to
0010  * permit persons to whom the Software is furnished to do so, subject to
0011  * the following conditions:
0012  *
0013  * The above copyright notice and this permission notice (including the
0014  * next paragraph) shall be included in all copies or substantial
0015  * portions of the Software.
0016  *
0017  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
0018  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
0019  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
0020  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
0021  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
0022  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
0023  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
0024  *
0025  */
0026 #include "priv.h"
0027 #include "ram.h"
0028
0029 void
0030 nv20_fb_tile_init(struct nvkm_fb *fb, int i, u32 addr, u32 size, u32 pitch,
0031           u32 flags, struct nvkm_fb_tile *tile)
0032 {
0033     tile->addr  = 0x00000001 | addr;
0034     tile->limit = max(1u, addr + size) - 1;
0035     tile->pitch = pitch;
0036     if (flags & 4) {
0037         fb->func->tile.comp(fb, i, size, flags, tile);
0038         tile->addr |= 2;
0039     }
0040 }
0041
0042 static void
0043 nv20_fb_tile_comp(struct nvkm_fb *fb, int i, u32 size, u32 flags,
0044           struct nvkm_fb_tile *tile)
0045 {
0046     u32 tiles = DIV_ROUND_UP(size, 0x40);
0047     u32 tags  = round_up(tiles / fb->ram->parts, 0x40);
0048     if (!nvkm_mm_head(&fb->tags.mm, 0, 1, tags, tags, 1, &tile->tag)) {
0049         if (!(flags & 2)) tile->zcomp = 0x00000000; /* Z16 */
0050         else              tile->zcomp = 0x04000000; /* Z24S8 */
0051         tile->zcomp |= tile->tag->offset;
0052         tile->zcomp |= 0x80000000; /* enable */
0053 #ifdef __BIG_ENDIAN
0054         tile->zcomp |= 0x08000000;
0055 #endif
0056     }
0057 }
0058
0059 void
0060 nv20_fb_tile_fini(struct nvkm_fb *fb, int i, struct nvkm_fb_tile *tile)
0061 {
0062     tile->addr  = 0;
0063     tile->limit = 0;
0064     tile->pitch = 0;
0065     tile->zcomp = 0;
0066     nvkm_mm_free(&fb->tags.mm, &tile->tag);
0067 }
0068
0069 void
0070 nv20_fb_tile_prog(struct nvkm_fb *fb, int i, struct nvkm_fb_tile *tile)
0071 {
0072     struct nvkm_device *device = fb->subdev.device;
0073     nvkm_wr32(device, 0x100244 + (i * 0x10), tile->limit);
0074     nvkm_wr32(device, 0x100248 + (i * 0x10), tile->pitch);
0075     nvkm_wr32(device, 0x100240 + (i * 0x10), tile->addr);
0076     nvkm_rd32(device, 0x100240 + (i * 0x10));
0077     nvkm_wr32(device, 0x100300 + (i * 0x04), tile->zcomp);
0078 }
0079
0080 u32
0081 nv20_fb_tags(struct nvkm_fb *fb)
0082 {
0083     const u32 tags = nvkm_rd32(fb->subdev.device, 0x100320);
0084     return tags ? tags + 1 : 0;
0085 }
0086
0087 static const struct nvkm_fb_func
0088 nv20_fb = {
0089     .tags = nv20_fb_tags,
0090     .tile.regions = 8,
0091     .tile.init = nv20_fb_tile_init,
0092     .tile.comp = nv20_fb_tile_comp,
0093     .tile.fini = nv20_fb_tile_fini,
0094     .tile.prog = nv20_fb_tile_prog,
0095     .ram_new = nv20_ram_new,
0096 };
0097
0098 int
0099 nv20_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
0100 {
0101     return nvkm_fb_new_(&nv20_fb, device, type, inst, pfb);
0102 }