nv10.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 "nv04.h"
 27#include "fbmem.h"
 28
 29#include <subdev/bios.h>
 30#include <subdev/bios/init.h>
 31
 32static void
 33nv10_devinit_meminit(struct nvkm_devinit *init)
 34{
 35	struct nvkm_subdev *subdev = &init->subdev;
 36	struct nvkm_device *device = subdev->device;
 37	static const int mem_width[] = { 0x10, 0x00, 0x20 };
 38	int mem_width_count;
 39	uint32_t patt = 0xdeadbeef;
 40	struct io_mapping *fb;
 41	int i, j, k;
 42
 43	if (device->card_type >= NV_11 && device->chipset >= 0x17)
 44		mem_width_count = 3;
 45	else
 46		mem_width_count = 2;
 47
 48	/* Map the framebuffer aperture */
 49	fb = fbmem_init(device);
 50	if (!fb) {
 51		nvkm_error(subdev, "failed to map fb\n");
 52		return;
 53	}
 54
 55	nvkm_wr32(device, NV10_PFB_REFCTRL, NV10_PFB_REFCTRL_VALID_1);
 56
 57	/* Probe memory bus width */
 58	for (i = 0; i < mem_width_count; i++) {
 59		nvkm_mask(device, NV04_PFB_CFG0, 0x30, mem_width[i]);
 60
 61		for (j = 0; j < 4; j++) {
 62			for (k = 0; k < 4; k++)
 63				fbmem_poke(fb, 0x1c, 0);
 64
 65			fbmem_poke(fb, 0x1c, patt);
 66			fbmem_poke(fb, 0x3c, 0);
 67
 68			if (fbmem_peek(fb, 0x1c) == patt)
 69				goto mem_width_found;
 70		}
 71	}
 72
 73mem_width_found:
 74	patt <<= 1;
 75
 76	/* Probe amount of installed memory */
 77	for (i = 0; i < 4; i++) {
 78		int off = nvkm_rd32(device, 0x10020c) - 0x100000;
 79
 80		fbmem_poke(fb, off, patt);
 81		fbmem_poke(fb, 0, 0);
 82
 83		fbmem_peek(fb, 0);
 84		fbmem_peek(fb, 0);
 85		fbmem_peek(fb, 0);
 86		fbmem_peek(fb, 0);
 87
 88		if (fbmem_peek(fb, off) == patt)
 89			goto amount_found;
 90	}
 91
 92	/* IC missing - disable the upper half memory space. */
 93	nvkm_mask(device, NV04_PFB_CFG0, 0x1000, 0);
 94
 95amount_found:
 96	fbmem_fini(fb);
 97}
 98
 99static const struct nvkm_devinit_func
100nv10_devinit = {
101	.dtor = nv04_devinit_dtor,
102	.preinit = nv04_devinit_preinit,
103	.post = nv04_devinit_post,
104	.meminit = nv10_devinit_meminit,
105	.pll_set = nv04_devinit_pll_set,
106};
107
108int
109nv10_devinit_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
110		 struct nvkm_devinit **pinit)
111{
112	return nv04_devinit_new_(&nv10_devinit, device, type, inst, pinit);
113}