1/* $NetBSD: nouveau_nvkm_subdev_fb_ramgp100.c,v 1.2 2021/12/18 23:45:39 riastradh Exp $ */ 2 3/* 4 * Copyright 2013 Red Hat Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: Ben Skeggs 25 */ 26#include <sys/cdefs.h> 27__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_fb_ramgp100.c,v 1.2 2021/12/18 23:45:39 riastradh Exp $"); 28 29#include "ram.h" 30 31#include <subdev/bios.h> 32#include <subdev/bios/init.h> 33#include <subdev/bios/rammap.h> 34 35static int 36gp100_ram_init(struct nvkm_ram *ram) 37{ 38 struct nvkm_subdev *subdev = &ram->fb->subdev; 39 struct nvkm_device *device = subdev->device; 40 struct nvkm_bios *bios = device->bios; 41 u8 ver, hdr, cnt, len, snr, ssz; 42 u32 data; 43 int i; 44 45 /* run a bunch of tables from rammap table. there's actually 46 * individual pointers for each rammap entry too, but, nvidia 47 * seem to just run the last two entries' scripts early on in 48 * their init, and never again.. we'll just run 'em all once 49 * for now. 50 * 51 * i strongly suspect that each script is for a separate mode 52 * (likely selected by 0x9a065c's lower bits?), and the 53 * binary driver skips the one that's already been setup by 54 * the init tables. 55 */ 56 data = nvbios_rammapTe(bios, &ver, &hdr, &cnt, &len, &snr, &ssz); 57 if (!data || hdr < 0x15) 58 return -EINVAL; 59 60 cnt = nvbios_rd08(bios, data + 0x14); /* guess at count */ 61 data = nvbios_rd32(bios, data + 0x10); /* guess u32... */ 62 if (cnt) { 63 u32 save = nvkm_rd32(device, 0x9a065c) & 0x000000f0; 64 for (i = 0; i < cnt; i++, data += 4) { 65 if (i != save >> 4) { 66 nvkm_mask(device, 0x9a065c, 0x000000f0, i << 4); 67 nvbios_init(subdev, nvbios_rd32(bios, data)); 68 } 69 } 70 nvkm_mask(device, 0x9a065c, 0x000000f0, save); 71 } 72 73 nvkm_mask(device, 0x9a0584, 0x11000000, 0x00000000); 74 nvkm_wr32(device, 0x10ecc0, 0xffffffff); 75 nvkm_mask(device, 0x9a0160, 0x00000010, 0x00000010); 76 return 0; 77} 78 79static u32 80gp100_ram_probe_fbpa(struct nvkm_device *device, int fbpa) 81{ 82 return nvkm_rd32(device, 0x90020c + (fbpa * 0x4000)); 83} 84 85static const struct nvkm_ram_func 86gp100_ram = { 87 .upper = 0x1000000000ULL, 88 .probe_fbp = gm107_ram_probe_fbp, 89 .probe_fbp_amount = gm200_ram_probe_fbp_amount, 90 .probe_fbpa_amount = gp100_ram_probe_fbpa, 91 .init = gp100_ram_init, 92}; 93 94int 95gp100_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram) 96{ 97 struct nvkm_ram *ram; 98 99 if (!(ram = *pram = kzalloc(sizeof(*ram), GFP_KERNEL))) 100 return -ENOMEM; 101 102 return gf100_ram_ctor(&gp100_ram, fb, ram); 103 104} 105