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/*
* 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 = nv_ro16(bios, data + 0x04);
if (xpio) {
*ver = nv_ro08(bios, data + 0x00);
*hdr = nv_ro08(bios, data + 0x01);
*cnt = nv_ro08(bios, data + 0x02);
*len = nv_ro08(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 = nv_ro16(bios, data + *hdr + (idx * *len));
if (xpio) {
*ver = nv_ro08(bios, data + 0x00);
*hdr = nv_ro08(bios, data + 0x01);
*cnt = nv_ro08(bios, data + 0x02);
*len = nv_ro08(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 = nv_ro08(bios, data + 0x04);
info->addr = nv_ro08(bios, data + 0x05);
info->flags = nv_ro08(bios, data + 0x06);
}
return 0x0000;
}
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