| /* |
| * Copyright 2012 Red Hat Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: Ben Skeggs |
| */ |
| #include <subdev/bios.h> |
| #include <subdev/bios/gpio.h> |
| #include <subdev/bios/xpio.h> |
| |
| static u16 |
| dcb_xpiod_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) |
| { |
| u16 data = dcb_gpio_table(bios, ver, hdr, cnt, len); |
| if (data && *ver >= 0x40 && *hdr >= 0x06) { |
| u16 xpio = nvbios_rd16(bios, data + 0x04); |
| if (xpio) { |
| *ver = nvbios_rd08(bios, data + 0x00); |
| *hdr = nvbios_rd08(bios, data + 0x01); |
| *cnt = nvbios_rd08(bios, data + 0x02); |
| *len = nvbios_rd08(bios, data + 0x03); |
| return xpio; |
| } |
| } |
| return 0x0000; |
| } |
| |
| u16 |
| dcb_xpio_table(struct nvkm_bios *bios, u8 idx, |
| u8 *ver, u8 *hdr, u8 *cnt, u8 *len) |
| { |
| u16 data = dcb_xpiod_table(bios, ver, hdr, cnt, len); |
| if (data && idx < *cnt) { |
| u16 xpio = nvbios_rd16(bios, data + *hdr + (idx * *len)); |
| if (xpio) { |
| *ver = nvbios_rd08(bios, data + 0x00); |
| *hdr = nvbios_rd08(bios, data + 0x01); |
| *cnt = nvbios_rd08(bios, data + 0x02); |
| *len = nvbios_rd08(bios, data + 0x03); |
| return xpio; |
| } |
| } |
| return 0x0000; |
| } |
| |
| u16 |
| dcb_xpio_parse(struct nvkm_bios *bios, u8 idx, |
| u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_xpio *info) |
| { |
| u16 data = dcb_xpio_table(bios, idx, ver, hdr, cnt, len); |
| if (data && *len >= 6) { |
| info->type = nvbios_rd08(bios, data + 0x04); |
| info->addr = nvbios_rd08(bios, data + 0x05); |
| info->flags = nvbios_rd08(bios, data + 0x06); |
| } |
| return 0x0000; |
| } |
