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 #include <core/device.h> 26 27 static u32 28 prom_read(void *data, u32 offset, u32 length, struct nvkm_bios *bios) 29 { 30 u32 i; 31 if (offset + length <= 0x00100000) { 32 for (i = offset; i < offset + length; i += 4) 33 *(u32 *)&bios->data[i] = nv_rd32(bios, 0x300000 + i); 34 return length; 35 } 36 return 0; 37 } 38 39 static void 40 prom_fini(void *data) 41 { 42 struct nvkm_bios *bios = data; 43 if (nv_device(bios)->card_type < NV_50) 44 nv_mask(bios, 0x001850, 0x00000001, 0x00000001); 45 else 46 nv_mask(bios, 0x088050, 0x00000001, 0x00000001); 47 } 48 49 static void * 50 prom_init(struct nvkm_bios *bios, const char *name) 51 { 52 if (nv_device(bios)->card_type < NV_50) { 53 if (nv_device(bios)->card_type == NV_40 && 54 nv_device(bios)->chipset >= 0x4c) 55 return ERR_PTR(-ENODEV); 56 nv_mask(bios, 0x001850, 0x00000001, 0x00000000); 57 } else { 58 nv_mask(bios, 0x088050, 0x00000001, 0x00000000); 59 } 60 return bios; 61 } 62 63 const struct nvbios_source 64 nvbios_rom = { 65 .name = "PROM", 66 .init = prom_init, 67 .fini = prom_fini, 68 .read = prom_read, 69 .rw = false, 70 }; 71