ramgp100.c (3232B)
1/* 2 * Copyright 2013 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * 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 OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Ben Skeggs 23 */ 24#include "ram.h" 25 26#include <subdev/bios.h> 27#include <subdev/bios/init.h> 28#include <subdev/bios/rammap.h> 29 30static int 31gp100_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 actually 41 * individual pointers for each rammap entry too, but, nvidia 42 * seem to just run the last two entries' scripts early on in 43 * their init, and never again.. we'll just run 'em all once 44 * for now. 45 * 46 * i strongly suspect that each script is for a separate mode 47 * (likely selected by 0x9a065c's lower bits?), and the 48 * binary driver skips the one that's already been setup by 49 * 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 u32 75gp100_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_func 81gp100_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 89int 90gp100_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}