1 /* 2 * Copyright 2014 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 <bskeggs@redhat.com> 23 */ 24 #include <subdev/bios.h> 25 #include <subdev/bios/npde.h> 26 #include <subdev/bios/pcir.h> 27 28 u32 29 nvbios_npdeTe(struct nvkm_bios *bios, u32 base) 30 { 31 struct nvbios_pcirT pcir; 32 u8 ver; u16 hdr; 33 u32 data = nvbios_pcirTp(bios, base, &ver, &hdr, &pcir); 34 if (data = (data + hdr + 0x0f) & ~0x0f, data) { 35 switch (nvbios_rd32(bios, data + 0x00)) { 36 case 0x4544504e: /* NPDE */ 37 break; 38 default: 39 nvkm_debug(&bios->subdev, 40 "%08x: NPDE signature (%08x) unknown\n", 41 data, nvbios_rd32(bios, data + 0x00)); 42 data = 0; 43 break; 44 } 45 } 46 return data; 47 } 48 49 u32 50 nvbios_npdeTp(struct nvkm_bios *bios, u32 base, struct nvbios_npdeT *info) 51 { 52 u32 data = nvbios_npdeTe(bios, base); 53 memset(info, 0x00, sizeof(*info)); 54 if (data) { 55 info->image_size = nvbios_rd16(bios, data + 0x08) * 512; 56 info->last = nvbios_rd08(bios, data + 0x0a) & 0x80; 57 } 58 return data; 59 } 60