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1/*2 * Copyright 2013 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: Ben Skeggs23 */24#include "ram.h"25 26#include <subdev/bios.h>27#include <subdev/bios/init.h>28#include <subdev/bios/rammap.h>29 30int31gp100_ram_init(struct nvkm_ram *ram)32{33 struct nvkm_subdev *subdev = &ram->fb->subdev;34 struct nvkm_device *device = subdev->device;35 struct nvkm_bios *bios = device->bios;36 u8 ver, hdr, cnt, len, snr, ssz;37 u32 data;38 int i;39 40 /* run a bunch of tables from rammap table. there's actually41 * individual pointers for each rammap entry too, but, nvidia42 * seem to just run the last two entries' scripts early on in43 * their init, and never again.. we'll just run 'em all once44 * for now.45 *46 * i strongly suspect that each script is for a separate mode47 * (likely selected by 0x9a065c's lower bits?), and the48 * binary driver skips the one that's already been setup by49 * the init tables.50 */51 data = nvbios_rammapTe(bios, &ver, &hdr, &cnt, &len, &snr, &ssz);52 if (!data || hdr < 0x15)53 return -EINVAL;54 55 cnt = nvbios_rd08(bios, data + 0x14); /* guess at count */56 data = nvbios_rd32(bios, data + 0x10); /* guess u32... */57 if (cnt) {58 u32 save = nvkm_rd32(device, 0x9a065c) & 0x000000f0;59 for (i = 0; i < cnt; i++, data += 4) {60 if (i != save >> 4) {61 nvkm_mask(device, 0x9a065c, 0x000000f0, i << 4);62 nvbios_init(subdev, nvbios_rd32(bios, data));63 }64 }65 nvkm_mask(device, 0x9a065c, 0x000000f0, save);66 }67 68 nvkm_mask(device, 0x9a0584, 0x11000000, 0x00000000);69 nvkm_wr32(device, 0x10ecc0, 0xffffffff);70 nvkm_mask(device, 0x9a0160, 0x00000010, 0x00000010);71 return 0;72}73 74static u3275gp100_ram_probe_fbpa(struct nvkm_device *device, int fbpa)76{77 return nvkm_rd32(device, 0x90020c + (fbpa * 0x4000));78}79 80static const struct nvkm_ram_func81gp100_ram = {82 .upper = 0x1000000000ULL,83 .probe_fbp = gm107_ram_probe_fbp,84 .probe_fbp_amount = gm200_ram_probe_fbp_amount,85 .probe_fbpa_amount = gp100_ram_probe_fbpa,86 .init = gp100_ram_init,87};88 89int90gp100_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)91{92 struct nvkm_ram *ram;93 94 if (!(ram = *pram = kzalloc(sizeof(*ram), GFP_KERNEL)))95 return -ENOMEM;96 97 return gf100_ram_ctor(&gp100_ram, fb, ram);98 99}100