nv20.c

  1/*
  2 * Copyright (C) 2010 Francisco Jerez.
  3 * All Rights Reserved.
  4 *
  5 * Permission is hereby granted, free of charge, to any person obtaining
  6 * a copy of this software and associated documentation files (the
  7 * "Software"), to deal in the Software without restriction, including
  8 * without limitation the rights to use, copy, modify, merge, publish,
  9 * distribute, sublicense, and/or sell copies of the Software, and to
 10 * permit persons to whom the Software is furnished to do so, subject to
 11 * the following conditions:
 12 *
 13 * The above copyright notice and this permission notice (including the
 14 * next paragraph) shall be included in all copies or substantial
 15 * portions of the Software.
 16 *
 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 24 *
 25 */
 26#include "priv.h"
 27#include "ram.h"
 28
 29void
 30nv20_fb_tile_init(struct nvkm_fb *fb, int i, u32 addr, u32 size, u32 pitch,
 31		  u32 flags, struct nvkm_fb_tile *tile)
 32{
 33	tile->addr  = 0x00000001 | addr;
 34	tile->limit = max(1u, addr + size) - 1;
 35	tile->pitch = pitch;
 36	if (flags & 4) {
 37		fb->func->tile.comp(fb, i, size, flags, tile);
 38		tile->addr |= 2;
 39	}
 40}
 41
 42static void
 43nv20_fb_tile_comp(struct nvkm_fb *fb, int i, u32 size, u32 flags,
 44		  struct nvkm_fb_tile *tile)
 45{
 46	u32 tiles = DIV_ROUND_UP(size, 0x40);
 47	u32 tags  = round_up(tiles / fb->ram->parts, 0x40);
 48	if (!nvkm_mm_head(&fb->tags.mm, 0, 1, tags, tags, 1, &tile->tag)) {
 49		if (!(flags & 2)) tile->zcomp = 0x00000000; /* Z16 */
 50		else              tile->zcomp = 0x04000000; /* Z24S8 */
 51		tile->zcomp |= tile->tag->offset;
 52		tile->zcomp |= 0x80000000; /* enable */
 53#ifdef __BIG_ENDIAN
 54		tile->zcomp |= 0x08000000;
 55#endif
 56	}
 57}
 58
 59void
 60nv20_fb_tile_fini(struct nvkm_fb *fb, int i, struct nvkm_fb_tile *tile)
 61{
 62	tile->addr  = 0;
 63	tile->limit = 0;
 64	tile->pitch = 0;
 65	tile->zcomp = 0;
 66	nvkm_mm_free(&fb->tags.mm, &tile->tag);
 67}
 68
 69void
 70nv20_fb_tile_prog(struct nvkm_fb *fb, int i, struct nvkm_fb_tile *tile)
 71{
 72	struct nvkm_device *device = fb->subdev.device;
 73	nvkm_wr32(device, 0x100244 + (i * 0x10), tile->limit);
 74	nvkm_wr32(device, 0x100248 + (i * 0x10), tile->pitch);
 75	nvkm_wr32(device, 0x100240 + (i * 0x10), tile->addr);
 76	nvkm_rd32(device, 0x100240 + (i * 0x10));
 77	nvkm_wr32(device, 0x100300 + (i * 0x04), tile->zcomp);
 78}
 79
 80u32
 81nv20_fb_tags(struct nvkm_fb *fb)
 82{
 83	const u32 tags = nvkm_rd32(fb->subdev.device, 0x100320);
 84	return tags ? tags + 1 : 0;
 85}
 86
 87static const struct nvkm_fb_func
 88nv20_fb = {
 89	.tags = nv20_fb_tags,
 90	.tile.regions = 8,
 91	.tile.init = nv20_fb_tile_init,
 92	.tile.comp = nv20_fb_tile_comp,
 93	.tile.fini = nv20_fb_tile_fini,
 94	.tile.prog = nv20_fb_tile_prog,
 95	.ram_new = nv20_ram_new,
 96};
 97
 98int
 99nv20_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
100{
101	return nvkm_fb_new_(&nv20_fb, device, type, inst, pfb);
102}