projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| cb75d97e BS |
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 | ||
| 27 | #include <subdev/devinit.h> | |
| 28 | #include <subdev/vga.h> | |
| 29 | ||
| 30 | #include "fbmem.h" | |
| 31 | ||
| 32 | struct nv10_devinit_priv { | |
| 33 | struct nouveau_devinit base; | |
| 34 | u8 owner; | |
| 35 | }; | |
| 36 | ||
| 37 | static void | |
| 38 | nv10_devinit_meminit(struct nouveau_devinit *devinit) | |
| 39 | { | |
| 40 | struct nv10_devinit_priv *priv = (void *)devinit; | |
| 41 | const int mem_width[] = { 0x10, 0x00, 0x20 }; | |
| 42 | const int mem_width_count = nv_device(priv)->chipset >= 0x17 ? 3 : 2; | |
| 43 | uint32_t patt = 0xdeadbeef; | |
| 44 | struct io_mapping *fb; | |
| 45 | int i, j, k; | |
| 46 | ||
| 47 | /* Map the framebuffer aperture */ | |
| 48 | fb = fbmem_init(nv_device(priv)->pdev); | |
| 49 | if (!fb) { | |
| 50 | nv_error(priv, "failed to map fb\n"); | |
| 51 | return; | |
| 52 | } | |
| 53 | ||
| 54 | nv_wr32(priv, NV10_PFB_REFCTRL, NV10_PFB_REFCTRL_VALID_1); | |
| 55 | ||
| 56 | /* Probe memory bus width */ | |
| 57 | for (i = 0; i < mem_width_count; i++) { | |
| 58 | nv_mask(priv, NV04_PFB_CFG0, 0x30, mem_width[i]); | |
| 59 | ||
| 60 | for (j = 0; j < 4; j++) { | |
| 61 | for (k = 0; k < 4; k++) | |
| 62 | fbmem_poke(fb, 0x1c, 0); | |
| 63 | ||
| 64 | fbmem_poke(fb, 0x1c, patt); | |
| 65 | fbmem_poke(fb, 0x3c, 0); | |
| 66 | ||
| 67 | if (fbmem_peek(fb, 0x1c) == patt) | |
| 68 | goto mem_width_found; | |
| 69 | } | |
| 70 | } | |
| 71 | ||
| 72 | mem_width_found: | |
| 73 | patt <<= 1; | |
| 74 | ||
| 75 | /* Probe amount of installed memory */ | |
| 76 | for (i = 0; i < 4; i++) { | |
| 77 | int off = nv_rd32(priv, 0x10020c) - 0x100000; | |
| 78 | ||
| 79 | fbmem_poke(fb, off, patt); | |
| 80 | fbmem_poke(fb, 0, 0); | |
| 81 | ||
| 82 | fbmem_peek(fb, 0); | |
| 83 | fbmem_peek(fb, 0); | |
| 84 | fbmem_peek(fb, 0); | |
| 85 | fbmem_peek(fb, 0); | |
| 86 | ||
| 87 | if (fbmem_peek(fb, off) == patt) | |
| 88 | goto amount_found; | |
| 89 | } | |
| 90 | ||
| 91 | /* IC missing - disable the upper half memory space. */ | |
| 92 | nv_mask(priv, NV04_PFB_CFG0, 0x1000, 0); | |
| 93 | ||
| 94 | amount_found: | |
| 95 | fbmem_fini(fb); | |
| 96 | } | |
| 97 | ||
| 98 | static int | |
| 99 | nv10_devinit_ctor(struct nouveau_object *parent, struct nouveau_object *engine, | |
| 100 | struct nouveau_oclass *oclass, void *data, u32 size, | |
| 101 | struct nouveau_object **pobject) | |
| 102 | { | |
| 103 | struct nv10_devinit_priv *priv; | |
| 104 | int ret; | |
| 105 | ||
| 106 | ret = nouveau_devinit_create(parent, engine, oclass, &priv); | |
| 107 | *pobject = nv_object(priv); | |
| 108 | if (ret) | |
| 109 | return ret; | |
| 110 | ||
| 111 | priv->base.meminit = nv10_devinit_meminit; | |
| 112 | return 0; | |
| 113 | } | |
| 114 | ||
| 115 | struct nouveau_oclass | |
| 116 | nv10_devinit_oclass = { | |
| 117 | .handle = NV_SUBDEV(DEVINIT, 0x10), | |
| 118 | .ofuncs = &(struct nouveau_ofuncs) { | |
| 119 | .ctor = nv10_devinit_ctor, | |
| 120 | .dtor = nv04_devinit_dtor, | |
| 121 | .init = nv04_devinit_init, | |
| 122 | .fini = nv04_devinit_fini, | |
| 123 | }, | |
| 124 | }; |