projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 112a12aa BS |
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 | * Authors: Ben Skeggs | |
| 23 | */ | |
| 112a12aa BS |
24 | #include <subdev/bios.h> |
| 25 | #include <subdev/bios/gpio.h> | |
| 26 | #include <subdev/bios/xpio.h> | |
| 27 | ||
| 28 | static u16 | |
| d390b480 | 29 | dcb_xpiod_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) |
| 112a12aa BS |
30 | { |
| 31 | u16 data = dcb_gpio_table(bios, ver, hdr, cnt, len); | |
| 32 | if (data && *ver >= 0x40 && *hdr >= 0x06) { | |
| 7f5f518f | 33 | u16 xpio = nvbios_rd16(bios, data + 0x04); |
| 112a12aa | 34 | if (xpio) { |
| 7f5f518f BS |
35 | *ver = nvbios_rd08(bios, data + 0x00); |
| 36 | *hdr = nvbios_rd08(bios, data + 0x01); | |
| 37 | *cnt = nvbios_rd08(bios, data + 0x02); | |
| 38 | *len = nvbios_rd08(bios, data + 0x03); | |
| 112a12aa BS |
39 | return xpio; |
| 40 | } | |
| 41 | } | |
| 42 | return 0x0000; | |
| 43 | } | |
| 44 | ||
| 45 | u16 | |
| d390b480 | 46 | dcb_xpio_table(struct nvkm_bios *bios, u8 idx, |
| 112a12aa BS |
47 | u8 *ver, u8 *hdr, u8 *cnt, u8 *len) |
| 48 | { | |
| 49 | u16 data = dcb_xpiod_table(bios, ver, hdr, cnt, len); | |
| 50 | if (data && idx < *cnt) { | |
| 7f5f518f | 51 | u16 xpio = nvbios_rd16(bios, data + *hdr + (idx * *len)); |
| 112a12aa | 52 | if (xpio) { |
| 7f5f518f BS |
53 | *ver = nvbios_rd08(bios, data + 0x00); |
| 54 | *hdr = nvbios_rd08(bios, data + 0x01); | |
| 55 | *cnt = nvbios_rd08(bios, data + 0x02); | |
| 56 | *len = nvbios_rd08(bios, data + 0x03); | |
| 112a12aa BS |
57 | return xpio; |
| 58 | } | |
| 59 | } | |
| 60 | return 0x0000; | |
| 61 | } | |
| 62 | ||
| 63 | u16 | |
| d390b480 BS |
64 | dcb_xpio_parse(struct nvkm_bios *bios, u8 idx, |
| 65 | u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_xpio *info) | |
| 112a12aa BS |
66 | { |
| 67 | u16 data = dcb_xpio_table(bios, idx, ver, hdr, cnt, len); | |
| 68 | if (data && *len >= 6) { | |
| 7f5f518f BS |
69 | info->type = nvbios_rd08(bios, data + 0x04); |
| 70 | info->addr = nvbios_rd08(bios, data + 0x05); | |
| 71 | info->flags = nvbios_rd08(bios, data + 0x06); | |
| 112a12aa BS |
72 | } |
| 73 | return 0x0000; | |
| 74 | } |