/* * 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;
}
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