| /* |
| * Copyright (C) 2010 Francisco Jerez. |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sublicense, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial |
| * portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE |
| * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| */ |
| #include "nv04.h" |
| #include "fbmem.h" |
| |
| #include <subdev/bios.h> |
| #include <subdev/bios/init.h> |
| |
| static void |
| nv10_devinit_meminit(struct nvkm_devinit *init) |
| { |
| struct nvkm_subdev *subdev = &init->subdev; |
| struct nvkm_device *device = subdev->device; |
| static const int mem_width[] = { 0x10, 0x00, 0x20 }; |
| int mem_width_count; |
| uint32_t patt = 0xdeadbeef; |
| struct io_mapping *fb; |
| int i, j, k; |
| |
| if (device->card_type >= NV_11 && device->chipset >= 0x17) |
| mem_width_count = 3; |
| else |
| mem_width_count = 2; |
| |
| /* Map the framebuffer aperture */ |
| fb = fbmem_init(device); |
| if (!fb) { |
| nvkm_error(subdev, "failed to map fb\n"); |
| return; |
| } |
| |
| nvkm_wr32(device, NV10_PFB_REFCTRL, NV10_PFB_REFCTRL_VALID_1); |
| |
| /* Probe memory bus width */ |
| for (i = 0; i < mem_width_count; i++) { |
| nvkm_mask(device, NV04_PFB_CFG0, 0x30, mem_width[i]); |
| |
| for (j = 0; j < 4; j++) { |
| for (k = 0; k < 4; k++) |
| fbmem_poke(fb, 0x1c, 0); |
| |
| fbmem_poke(fb, 0x1c, patt); |
| fbmem_poke(fb, 0x3c, 0); |
| |
| if (fbmem_peek(fb, 0x1c) == patt) |
| goto mem_width_found; |
| } |
| } |
| |
| mem_width_found: |
| patt <<= 1; |
| |
| /* Probe amount of installed memory */ |
| for (i = 0; i < 4; i++) { |
| int off = nvkm_rd32(device, 0x10020c) - 0x100000; |
| |
| fbmem_poke(fb, off, patt); |
| fbmem_poke(fb, 0, 0); |
| |
| fbmem_peek(fb, 0); |
| fbmem_peek(fb, 0); |
| fbmem_peek(fb, 0); |
| fbmem_peek(fb, 0); |
| |
| if (fbmem_peek(fb, off) == patt) |
| goto amount_found; |
| } |
| |
| /* IC missing - disable the upper half memory space. */ |
| nvkm_mask(device, NV04_PFB_CFG0, 0x1000, 0); |
| |
| amount_found: |
| fbmem_fini(fb); |
| } |
| |
| static const struct nvkm_devinit_func |
| nv10_devinit = { |
| .dtor = nv04_devinit_dtor, |
| .preinit = nv04_devinit_preinit, |
| .post = nv04_devinit_post, |
| .meminit = nv10_devinit_meminit, |
| .pll_set = nv04_devinit_pll_set, |
| }; |
| |
| int |
| nv10_devinit_new(struct nvkm_device *device, int index, |
| struct nvkm_devinit **pinit) |
| { |
| return nv04_devinit_new_(&nv10_devinit, device, index, pinit); |
| } |