/*
* 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 >= 0 x40 && *hdr >= 0 x06) {
u16 xpio = nvbios_rd16(bios, data + 0 x04);
if (xpio) {
*ver = nvbios_rd08(bios, data + 0 x00);
*hdr = nvbios_rd08(bios, data + 0 x01);
*cnt = nvbios_rd08(bios, data + 0 x02);
*len = nvbios_rd08(bios, data + 0 x03);
return xpio;
}
}
return 0 x0000;
}
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 + 0 x00);
*hdr = nvbios_rd08(bios, data + 0 x01);
*cnt = nvbios_rd08(bios, data + 0 x02);
*len = nvbios_rd08(bios, data + 0 x03);
return xpio;
}
}
return 0 x0000;
}
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 + 0 x04);
info->addr = nvbios_rd08(bios, data + 0 x05);
info->flags = nvbios_rd08(bios, data + 0 x06);
}
return 0 x0000;
}
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