1 /* 2 * Copyright 2012 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 */ 23 #include "priv.h" 24 25 static u32 26 prom_read(void *data, u32 offset, u32 length, struct nvkm_bios *bios) 27 { 28 struct nvkm_device *device = data; 29 u32 i; 30 if (offset + length <= 0x00100000) { 31 for (i = offset; i < offset + length; i += 4) 32 *(u32 *)&bios->data[i] = nvkm_rd32(device, 0x300000 + i); 33 return length; 34 } 35 return 0; 36 } 37 38 static void 39 prom_fini(void *data) 40 { 41 struct nvkm_device *device = data; 42 if (device->card_type < NV_50) 43 nvkm_mask(device, 0x001850, 0x00000001, 0x00000001); 44 else 45 nvkm_mask(device, 0x088050, 0x00000001, 0x00000001); 46 } 47 48 static void * 49 prom_init(struct nvkm_bios *bios, const char *name) 50 { 51 struct nvkm_device *device = bios->subdev.device; 52 if (device->card_type < NV_50) { 53 if (device->card_type == NV_40 && device->chipset >= 0x4c) 54 return ERR_PTR(-ENODEV); 55 nvkm_mask(device, 0x001850, 0x00000001, 0x00000000); 56 } else { 57 nvkm_mask(device, 0x088050, 0x00000001, 0x00000000); 58 } 59 return device; 60 } 61 62 const struct nvbios_source 63 nvbios_rom = { 64 .name = "PROM", 65 .init = prom_init, 66 .fini = prom_fini, 67 .read = prom_read, 68 .rw = false, 69 }; 70