1/* $NetBSD: nouveau_nvkm_subdev_bios_pmu.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $ */ 2 3/* 4 * Copyright 2014 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 <bskeggs@redhat.com> 25 */ 26#include <sys/cdefs.h> 27__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_bios_pmu.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $"); 28 29#include <subdev/bios.h> 30#include <subdev/bios/bit.h> 31#include <subdev/bios/image.h> 32#include <subdev/bios/pmu.h> 33 34u32 35nvbios_pmuTe(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) 36{ 37 struct bit_entry bit_p; 38 u32 data = 0; 39 40 if (!bit_entry(bios, 'p', &bit_p)) { 41 if (bit_p.version == 2 && bit_p.length >= 4) 42 data = nvbios_rd32(bios, bit_p.offset + 0x00); 43 if (data) { 44 *ver = nvbios_rd08(bios, data + 0x00); /* maybe? */ 45 *hdr = nvbios_rd08(bios, data + 0x01); 46 *len = nvbios_rd08(bios, data + 0x02); 47 *cnt = nvbios_rd08(bios, data + 0x03); 48 } 49 } 50 51 return data; 52} 53 54u32 55nvbios_pmuEe(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr) 56{ 57 u8 cnt, len; 58 u32 data = nvbios_pmuTe(bios, ver, hdr, &cnt, &len); 59 if (data && idx < cnt) { 60 data = data + *hdr + (idx * len); 61 *hdr = len; 62 return data; 63 } 64 return 0; 65} 66 67u32 68nvbios_pmuEp(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr, 69 struct nvbios_pmuE *info) 70{ 71 u32 data = nvbios_pmuEe(bios, idx, ver, hdr); 72 memset(info, 0x00, sizeof(*info)); 73 switch (!!data * *ver) { 74 default: 75 info->type = nvbios_rd08(bios, data + 0x00); 76 info->data = nvbios_rd32(bios, data + 0x02); 77 break; 78 } 79 return data; 80} 81 82bool 83nvbios_pmuRm(struct nvkm_bios *bios, u8 type, struct nvbios_pmuR *info) 84{ 85 struct nvbios_pmuE pmuE; 86 u8 ver, hdr, idx = 0; 87 u32 data; 88 memset(info, 0x00, sizeof(*info)); 89 while ((data = nvbios_pmuEp(bios, idx++, &ver, &hdr, &pmuE))) { 90 if (pmuE.type == type && (data = pmuE.data)) { 91 info->init_addr_pmu = nvbios_rd32(bios, data + 0x08); 92 info->args_addr_pmu = nvbios_rd32(bios, data + 0x0c); 93 info->boot_addr = data + 0x30; 94 info->boot_addr_pmu = nvbios_rd32(bios, data + 0x10) + 95 nvbios_rd32(bios, data + 0x18); 96 info->boot_size = nvbios_rd32(bios, data + 0x1c) - 97 nvbios_rd32(bios, data + 0x18); 98 info->code_addr = info->boot_addr + info->boot_size; 99 info->code_addr_pmu = info->boot_addr_pmu + 100 info->boot_size; 101 info->code_size = nvbios_rd32(bios, data + 0x20); 102 info->data_addr = data + 0x30 + 103 nvbios_rd32(bios, data + 0x24); 104 info->data_addr_pmu = nvbios_rd32(bios, data + 0x28); 105 info->data_size = nvbios_rd32(bios, data + 0x2c); 106 return true; 107 } 108 } 109 return false; 110} 111