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drm/nouveau/bios: implement "full" BIT 'd' table (and subtable) parsi…
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…ng in core

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Ben Skeggs committed Nov 28, 2012
1 parent 14464b8 commit 65c7866
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Showing 4 changed files with 192 additions and 64 deletions.
29 changes: 0 additions & 29 deletions drivers/gpu/drm/nouveau/core/include/subdev/bios/dcb.h
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Original file line number Diff line number Diff line change
Expand Up @@ -58,33 +58,4 @@ u16 dcb_outp(struct nouveau_bios *, u8 idx, u8 *ver, u8 *len);
int dcb_outp_foreach(struct nouveau_bios *, void *data, int (*exec)
(struct nouveau_bios *, void *, int index, u16 entry));


/* BIT 'U'/'d' table encoder subtables have hashes matching them to
* a particular set of encoders.
*
* This function returns true if a particular DCB entry matches.
*/
static inline bool
dcb_hash_match(struct dcb_output *dcb, u32 hash)
{
if ((hash & 0x000000f0) != (dcb->location << 4))
return false;
if ((hash & 0x0000000f) != dcb->type)
return false;
if (!(hash & (dcb->or << 16)))
return false;

switch (dcb->type) {
case DCB_OUTPUT_TMDS:
case DCB_OUTPUT_LVDS:
case DCB_OUTPUT_DP:
if (hash & 0x00c00000) {
if (!(hash & (dcb->sorconf.link << 22)))
return false;
}
default:
return true;
}
}

#endif
32 changes: 29 additions & 3 deletions drivers/gpu/drm/nouveau/core/include/subdev/bios/dp.h
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Original file line number Diff line number Diff line change
@@ -1,8 +1,34 @@
#ifndef __NVBIOS_DP_H__
#define __NVBIOS_DP_H__

u16 dp_table(struct nouveau_bios *, u8 *ver, u8 *hdr, u8 *cnt, u8 *len);
u16 dp_outp(struct nouveau_bios *, u8 idx, u8 *ver, u8 *len);
u16 dp_outp_match(struct nouveau_bios *, struct dcb_output *, u8 *ver, u8 *len);
struct nvbios_dpout {
u16 type;
u16 mask;
u8 flags;
u32 script[5];
u32 lnkcmp;
};

u16 nvbios_dpout_parse(struct nouveau_bios *, u8 idx,
u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
struct nvbios_dpout *);
u16 nvbios_dpout_match(struct nouveau_bios *, u16 type, u16 mask,
u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
struct nvbios_dpout *);

struct nvbios_dpcfg {
u8 drv;
u8 pre;
u8 unk;
};

u16
nvbios_dpcfg_parse(struct nouveau_bios *, u16 outp, u8 idx,
u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
struct nvbios_dpcfg *);
u16
nvbios_dpcfg_match(struct nouveau_bios *, u16 outp, u8 un, u8 vs, u8 pe,
u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
struct nvbios_dpcfg *);

#endif
182 changes: 155 additions & 27 deletions drivers/gpu/drm/nouveau/core/subdev/bios/dp.c
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Original file line number Diff line number Diff line change
Expand Up @@ -25,52 +25,180 @@

#include "subdev/bios.h"
#include "subdev/bios/bit.h"
#include "subdev/bios/dcb.h"
#include "subdev/bios/dp.h"

u16
dp_table(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
static u16
nvbios_dp_table(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
{
struct bit_entry bit_d;
struct bit_entry d;

if (!bit_entry(bios, 'd', &bit_d)) {
if (bit_d.version == 1) {
u16 data = nv_ro16(bios, bit_d.offset);
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 + 0);
*hdr = nv_ro08(bios, data + 1);
*len = nv_ro08(bios, data + 2);
*cnt = nv_ro08(bios, data + 3);
return data;
*ver = nv_ro08(bios, data + 0x00);
switch (*ver) {
case 0x21:
case 0x30:
case 0x40:
*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 nouveau_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:
*hdr = nv_ro08(bios, data + 0x04);
*cnt = 0;
*len = 0;
break;
default:
break;
}
return outp;
}
*ver = 0x00;
return 0x0000;
}

u16
dp_outp(struct nouveau_bios *bios, u8 idx, u8 *ver, u8 *len)
nvbios_dpout_parse(struct nouveau_bios *bios, u8 idx,
u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
struct nvbios_dpout *info)
{
u8 hdr, cnt;
u16 table = dp_table(bios, ver, &hdr, &cnt, len);
if (table && idx < cnt)
return nv_ro16(bios, table + hdr + (idx * *len));
return 0xffff;
u16 data = nvbios_dpout_entry(bios, idx, ver, hdr, cnt, len);
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);
info->script[2] = nv_ro16(bios, data + 0x0c);
info->script[3] = nv_ro16(bios, data + 0x0e);
info->script[4] = nv_ro16(bios, data + 0x10);
break;
case 0x40:
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
dp_outp_match(struct nouveau_bios *bios, struct dcb_output *outp,
u8 *ver, u8 *len)
nvbios_dpout_match(struct nouveau_bios *bios, u16 type, u16 mask,
u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
struct nvbios_dpout *info)
{
u8 idx = 0;
u16 data;
while ((data = dp_outp(bios, idx++, ver, len)) != 0xffff) {
if (data) {
u32 hash = nv_ro32(bios, data);
if (dcb_hash_match(outp, hash))
return data;
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 nouveau_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 nouveau_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);
if (data) {
switch (*ver) {
case 0x21:
info->drv = nv_ro08(bios, data + 0x02);
info->pre = nv_ro08(bios, data + 0x03);
info->unk = nv_ro08(bios, data + 0x04);
break;
case 0x30:
case 0x40:
info->drv = nv_ro08(bios, data + 0x01);
info->pre = nv_ro08(bios, data + 0x02);
info->unk = nv_ro08(bios, data + 0x03);
break;
default:
data = 0x0000;
break;
}
}
return data;
}

u16
nvbios_dpcfg_match(struct nouveau_bios *bios, u16 outp, u8 un, u8 vs, u8 pe,
u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
struct nvbios_dpcfg *info)
{
u8 idx = 0xff;
u16 data;

if (*ver >= 0x30) {
const u8 vsoff[] = { 0, 4, 7, 9 };
idx = (un * 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;
idx++;
}
}

return nvbios_dpcfg_parse(bios, outp, pe, ver, hdr, cnt, len, info);
}
13 changes: 8 additions & 5 deletions drivers/gpu/drm/nouveau/core/subdev/bios/init.c
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Original file line number Diff line number Diff line change
Expand Up @@ -743,9 +743,10 @@ static void
init_dp_condition(struct nvbios_init *init)
{
struct nouveau_bios *bios = init->bios;
struct nvbios_dpout info;
u8 cond = nv_ro08(bios, init->offset + 1);
u8 unkn = nv_ro08(bios, init->offset + 2);
u8 ver, len;
u8 ver, hdr, cnt, len;
u16 data;

trace("DP_CONDITION\t0x%02x 0x%02x\n", cond, unkn);
Expand All @@ -759,10 +760,12 @@ init_dp_condition(struct nvbios_init *init)
case 1:
case 2:
if ( init->outp &&
(data = dp_outp_match(bios, init->outp, &ver, &len))) {
if (ver <= 0x40 && !(nv_ro08(bios, data + 5) & cond))
init_exec_set(init, false);
if (ver == 0x40 && !(nv_ro08(bios, data + 4) & cond))
(data = nvbios_dpout_match(bios, DCB_OUTPUT_DP,
(init->outp->or << 0) |
(init->outp->sorconf.link << 6),
&ver, &hdr, &cnt, &len, &info)))
{
if (!(info.flags & cond))
init_exec_set(init, false);
break;
}
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