nv30.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
 30nv30_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	/* for performance, select alternate bank offset for zeta */
 34	if (!(flags & 4)) {
 35		tile->addr = (0 << 4);
 36	} else {
 37		if (fb->func->tile.comp) /* z compression */
 38			fb->func->tile.comp(fb, i, size, flags, tile);
 39		tile->addr = (1 << 4);
 40	}
 41
 42	tile->addr |= 0x00000001; /* enable */
 43	tile->addr |= addr;
 44	tile->limit = max(1u, addr + size) - 1;
 45	tile->pitch = pitch;
 46}
 47
 48static void
 49nv30_fb_tile_comp(struct nvkm_fb *fb, int i, u32 size, u32 flags,
 50		  struct nvkm_fb_tile *tile)
 51{
 52	u32 tiles = DIV_ROUND_UP(size, 0x40);
 53	u32 tags  = round_up(tiles / fb->ram->parts, 0x40);
 54	if (!nvkm_mm_head(&fb->tags.mm, 0, 1, tags, tags, 1, &tile->tag)) {
 55		if (flags & 2) tile->zcomp |= 0x01000000; /* Z16 */
 56		else           tile->zcomp |= 0x02000000; /* Z24S8 */
 57		tile->zcomp |= ((tile->tag->offset           ) >> 6);
 58		tile->zcomp |= ((tile->tag->offset + tags - 1) >> 6) << 12;
 59#ifdef __BIG_ENDIAN
 60		tile->zcomp |= 0x10000000;
 61#endif
 62	}
 63}
 64
 65static int
 66calc_bias(struct nvkm_fb *fb, int k, int i, int j)
 67{
 68	struct nvkm_device *device = fb->subdev.device;
 69	int b = (device->chipset > 0x30 ?
 70		 nvkm_rd32(device, 0x122c + 0x10 * k + 0x4 * j) >>
 71			(4 * (i ^ 1)) :
 72		 0) & 0xf;
 73
 74	return 2 * (b & 0x8 ? b - 0x10 : b);
 75}
 76
 77static int
 78calc_ref(struct nvkm_fb *fb, int l, int k, int i)
 79{
 80	int j, x = 0;
 81
 82	for (j = 0; j < 4; j++) {
 83		int m = (l >> (8 * i) & 0xff) + calc_bias(fb, k, i, j);
 84
 85		x |= (0x80 | clamp(m, 0, 0x1f)) << (8 * j);
 86	}
 87
 88	return x;
 89}
 90
 91void
 92nv30_fb_init(struct nvkm_fb *fb)
 93{
 94	struct nvkm_device *device = fb->subdev.device;
 95	int i, j;
 96
 97	/* Init the memory timing regs at 0x10037c/0x1003ac */
 98	if (device->chipset == 0x30 ||
 99	    device->chipset == 0x31 ||
100	    device->chipset == 0x35) {
101		/* Related to ROP count */
102		int n = (device->chipset == 0x31 ? 2 : 4);
103		int l = nvkm_rd32(device, 0x1003d0);
104
105		for (i = 0; i < n; i++) {
106			for (j = 0; j < 3; j++)
107				nvkm_wr32(device, 0x10037c + 0xc * i + 0x4 * j,
108					  calc_ref(fb, l, 0, j));
109
110			for (j = 0; j < 2; j++)
111				nvkm_wr32(device, 0x1003ac + 0x8 * i + 0x4 * j,
112					  calc_ref(fb, l, 1, j));
113		}
114	}
115}
116
117static const struct nvkm_fb_func
118nv30_fb = {
119	.tags = nv20_fb_tags,
120	.init = nv30_fb_init,
121	.tile.regions = 8,
122	.tile.init = nv30_fb_tile_init,
123	.tile.comp = nv30_fb_tile_comp,
124	.tile.fini = nv20_fb_tile_fini,
125	.tile.prog = nv20_fb_tile_prog,
126	.ram_new = nv20_ram_new,
127};
128
129int
130nv30_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
131{
132	return nvkm_fb_new_(&nv30_fb, device, type, inst, pfb);
133}