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 32 static void 33 nv10_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 73 mem_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 95 amount_found: 96 fbmem_fini(fb); 97 } 98 99 static const struct nvkm_devinit_func 100 nv10_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 }; 107 108 int 109 nv10_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 } 114