diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bios/dp.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/bios/dp.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/dp.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/dp.c new file mode 100644 index 000000000000..95970faae6c8 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/dp.c @@ -0,0 +1,215 @@ +/* + * 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/bit.h> +#include <subdev/bios/dp.h> + +static u16 +nvbios_dp_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) +{ + struct bit_entry d; + + if (!bit_entry(bios, 'd', &d)) { + if (d.version == 1 && d.length >= 2) { + u16 data = nv_ro16(bios, d.offset); + if (data) { + *ver = nv_ro08(bios, data + 0x00); + switch (*ver) { + case 0x21: + case 0x30: + case 0x40: + case 0x41: + *hdr = nv_ro08(bios, data + 0x01); + *len = nv_ro08(bios, data + 0x02); + *cnt = nv_ro08(bios, data + 0x03); + return data; + default: + break; + } + } + } + } + + return 0x0000; +} + +static u16 +nvbios_dpout_entry(struct nvkm_bios *bios, u8 idx, + u8 *ver, u8 *hdr, u8 *cnt, u8 *len) +{ + u16 data = nvbios_dp_table(bios, ver, hdr, cnt, len); + if (data && idx < *cnt) { + u16 outp = nv_ro16(bios, data + *hdr + idx * *len); + switch (*ver * !!outp) { + case 0x21: + case 0x30: + *hdr = nv_ro08(bios, data + 0x04); + *len = nv_ro08(bios, data + 0x05); + *cnt = nv_ro08(bios, outp + 0x04); + break; + case 0x40: + case 0x41: + *hdr = nv_ro08(bios, data + 0x04); + *cnt = 0; + *len = 0; + break; + default: + break; + } + return outp; + } + *ver = 0x00; + return 0x0000; +} + +u16 +nvbios_dpout_parse(struct nvkm_bios *bios, u8 idx, + u8 *ver, u8 *hdr, u8 *cnt, u8 *len, + struct nvbios_dpout *info) +{ + u16 data = nvbios_dpout_entry(bios, idx, ver, hdr, cnt, len); + memset(info, 0x00, sizeof(*info)); + if (data && *ver) { + info->type = nv_ro16(bios, data + 0x00); + info->mask = nv_ro16(bios, data + 0x02); + switch (*ver) { + case 0x21: + case 0x30: + info->flags = nv_ro08(bios, data + 0x05); + info->script[0] = nv_ro16(bios, data + 0x06); + info->script[1] = nv_ro16(bios, data + 0x08); + info->lnkcmp = nv_ro16(bios, data + 0x0a); + if (*len >= 0x0f) { + info->script[2] = nv_ro16(bios, data + 0x0c); + info->script[3] = nv_ro16(bios, data + 0x0e); + } + if (*len >= 0x11) + info->script[4] = nv_ro16(bios, data + 0x10); + break; + case 0x40: + case 0x41: + info->flags = nv_ro08(bios, data + 0x04); + info->script[0] = nv_ro16(bios, data + 0x05); + info->script[1] = nv_ro16(bios, data + 0x07); + info->lnkcmp = nv_ro16(bios, data + 0x09); + info->script[2] = nv_ro16(bios, data + 0x0b); + info->script[3] = nv_ro16(bios, data + 0x0d); + info->script[4] = nv_ro16(bios, data + 0x0f); + break; + default: + data = 0x0000; + break; + } + } + return data; +} + +u16 +nvbios_dpout_match(struct nvkm_bios *bios, u16 type, u16 mask, + u8 *ver, u8 *hdr, u8 *cnt, u8 *len, + struct nvbios_dpout *info) +{ + u16 data, idx = 0; + while ((data = nvbios_dpout_parse(bios, idx++, ver, hdr, cnt, len, info)) || *ver) { + if (data && info->type == type) { + if ((info->mask & mask) == mask) + break; + } + } + return data; +} + +static u16 +nvbios_dpcfg_entry(struct nvkm_bios *bios, u16 outp, u8 idx, + u8 *ver, u8 *hdr, u8 *cnt, u8 *len) +{ + if (*ver >= 0x40) { + outp = nvbios_dp_table(bios, ver, hdr, cnt, len); + *hdr = *hdr + (*len * * cnt); + *len = nv_ro08(bios, outp + 0x06); + *cnt = nv_ro08(bios, outp + 0x07); + } + + if (idx < *cnt) + return outp + *hdr + (idx * *len); + + return 0x0000; +} + +u16 +nvbios_dpcfg_parse(struct nvkm_bios *bios, u16 outp, u8 idx, + u8 *ver, u8 *hdr, u8 *cnt, u8 *len, + struct nvbios_dpcfg *info) +{ + u16 data = nvbios_dpcfg_entry(bios, outp, idx, ver, hdr, cnt, len); + memset(info, 0x00, sizeof(*info)); + if (data) { + switch (*ver) { + case 0x21: + info->dc = nv_ro08(bios, data + 0x02); + info->pe = nv_ro08(bios, data + 0x03); + info->tx_pu = nv_ro08(bios, data + 0x04); + break; + case 0x30: + case 0x40: + case 0x41: + info->pc = nv_ro08(bios, data + 0x00); + info->dc = nv_ro08(bios, data + 0x01); + info->pe = nv_ro08(bios, data + 0x02); + info->tx_pu = nv_ro08(bios, data + 0x03) & 0x0f; + break; + default: + data = 0x0000; + break; + } + } + return data; +} + +u16 +nvbios_dpcfg_match(struct nvkm_bios *bios, u16 outp, u8 pc, u8 vs, u8 pe, + u8 *ver, u8 *hdr, u8 *cnt, u8 *len, + struct nvbios_dpcfg *info) +{ + u8 idx = 0xff; + u16 data; + + if (*ver >= 0x30) { + /*XXX: there's a second set of these on at least 4.1, that + * i've witnessed nvidia using instead of the first + * on gm204. figure out what/why + */ + const u8 vsoff[] = { 0, 4, 7, 9 }; + idx = (pc * 10) + vsoff[vs] + pe; + } else { + while ((data = nvbios_dpcfg_entry(bios, outp, ++idx, + ver, hdr, cnt, len))) { + if (nv_ro08(bios, data + 0x00) == vs && + nv_ro08(bios, data + 0x01) == pe) + break; + } + } + + return nvbios_dpcfg_parse(bios, outp, idx, ver, hdr, cnt, len, info); +} |