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LeafOS / LeafOS-Devices / android_kernel_realme_mt6785 / 268d28371cd326be4dfcd7eba5917bf4b9d30c8f / . / drivers / gpu / drm / nouveau / nouveau_bios.c
blob: f6b7fa39d31251fa6a3d31eacd5caa9113e7efe9 [file] [log] [blame]
/*
* Copyright 2005-2006 Erik Waling
* Copyright 2006 Stephane Marchesin
* Copyright 2007-2009 Stuart Bennett
*
* 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 AUTHORS 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.
*/
#include <subdev/bios.h>
#include "drmP.h"
#include "nouveau_drm.h"
#include "nouveau_reg.h"
#include "nouveau_hw.h"
#include "nouveau_encoder.h"
#include <linux/io-mapping.h>
#include <linux/firmware.h>
/* these defines are made up */
#define NV_CIO_CRE_44_HEADA 0x0
#define NV_CIO_CRE_44_HEADB 0x3
#define FEATURE_MOBILE 0x10 /* also FEATURE_QUADRO for BMP */
#define EDID1_LEN 128
#define BIOSLOG(sip, fmt, arg...) NV_DEBUG(sip->dev, fmt, ##arg)
#define LOG_OLD_VALUE(x)
struct init_exec {
bool execute;
bool repeat;
};
static bool nv_cksum(const uint8_t *data, unsigned int length)
{
/*
* There's a few checksums in the BIOS, so here's a generic checking
* function.
*/
int i;
uint8_t sum = 0;
for (i = 0; i < length; i++)
sum += data[i];
if (sum)
return true;
return false;
}
static uint16_t clkcmptable(struct nvbios *bios, uint16_t clktable, int pxclk)
{
int compare_record_len, i = 0;
uint16_t compareclk, scriptptr = 0;
if (bios->major_version < 5) /* pre BIT */
compare_record_len = 3;
else
compare_record_len = 4;
do {
compareclk = ROM16(bios->data[clktable + compare_record_len * i]);
if (pxclk >= compareclk * 10) {
if (bios->major_version < 5) {
uint8_t tmdssub = bios->data[clktable + 2 + compare_record_len * i];
scriptptr = ROM16(bios->data[bios->init_script_tbls_ptr + tmdssub * 2]);
} else
scriptptr = ROM16(bios->data[clktable + 2 + compare_record_len * i]);
break;
}
i++;
} while (compareclk);
return scriptptr;
}
static void
run_digital_op_script(struct drm_device *dev, uint16_t scriptptr,
struct dcb_output *dcbent, int head, bool dl)
{
struct nouveau_drm *drm = nouveau_drm(dev);
NV_INFO(drm, "0x%04X: Parsing digital output script table\n",
scriptptr);
NVWriteVgaCrtc(dev, 0, NV_CIO_CRE_44, head ? NV_CIO_CRE_44_HEADB :
NV_CIO_CRE_44_HEADA);
nouveau_bios_run_init_table(dev, scriptptr, dcbent, head);
nv04_dfp_bind_head(dev, dcbent, head, dl);
}
static int call_lvds_manufacturer_script(struct drm_device *dev, struct dcb_output *dcbent, int head, enum LVDS_script script)
{
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvbios *bios = &drm->vbios;
uint8_t sub = bios->data[bios->fp.xlated_entry + script] + (bios->fp.link_c_increment && dcbent->or & DCB_OUTPUT_C ? 1 : 0);
uint16_t scriptofs = ROM16(bios->data[bios->init_script_tbls_ptr + sub * 2]);
if (!bios->fp.xlated_entry || !sub || !scriptofs)
return -EINVAL;
run_digital_op_script(dev, scriptofs, dcbent, head, bios->fp.dual_link);
if (script == LVDS_PANEL_OFF) {
/* off-on delay in ms */
mdelay(ROM16(bios->data[bios->fp.xlated_entry + 7]));
}
#ifdef __powerpc__
/* Powerbook specific quirks */
if (script == LVDS_RESET &&
(dev->pci_device == 0x0179 || dev->pci_device == 0x0189 ||
dev->pci_device == 0x0329))
nv_write_tmds(dev, dcbent->or, 0, 0x02, 0x72);
#endif
return 0;
}
static int run_lvds_table(struct drm_device *dev, struct dcb_output *dcbent, int head, enum LVDS_script script, int pxclk)
{
/*
* The BIT LVDS table's header has the information to setup the
* necessary registers. Following the standard 4 byte header are:
* A bitmask byte and a dual-link transition pxclk value for use in
* selecting the init script when not using straps; 4 script pointers
* for panel power, selected by output and on/off; and 8 table pointers
* for panel init, the needed one determined by output, and bits in the
* conf byte. These tables are similar to the TMDS tables, consisting
* of a list of pxclks and script pointers.
*/
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvbios *bios = &drm->vbios;
unsigned int outputset = (dcbent->or == 4) ? 1 : 0;
uint16_t scriptptr = 0, clktable;
/*
* For now we assume version 3.0 table - g80 support will need some
* changes
*/
switch (script) {
case LVDS_INIT:
return -ENOSYS;
case LVDS_BACKLIGHT_ON:
case LVDS_PANEL_ON:
scriptptr = ROM16(bios->data[bios->fp.lvdsmanufacturerpointer + 7 + outputset * 2]);
break;
case LVDS_BACKLIGHT_OFF:
case LVDS_PANEL_OFF:
scriptptr = ROM16(bios->data[bios->fp.lvdsmanufacturerpointer + 11 + outputset * 2]);
break;
case LVDS_RESET:
clktable = bios->fp.lvdsmanufacturerpointer + 15;
if (dcbent->or == 4)
clktable += 8;
if (dcbent->lvdsconf.use_straps_for_mode) {
if (bios->fp.dual_link)
clktable += 4;
if (bios->fp.if_is_24bit)
clktable += 2;
} else {
/* using EDID */
int cmpval_24bit = (dcbent->or == 4) ? 4 : 1;
if (bios->fp.dual_link) {
clktable += 4;
cmpval_24bit <<= 1;
}
if (bios->fp.strapless_is_24bit & cmpval_24bit)
clktable += 2;
}
clktable = ROM16(bios->data[clktable]);
if (!clktable) {
NV_ERROR(drm, "Pixel clock comparison table not found\n");
return -ENOENT;
}
scriptptr = clkcmptable(bios, clktable, pxclk);
}
if (!scriptptr) {
NV_ERROR(drm, "LVDS output init script not found\n");
return -ENOENT;
}
run_digital_op_script(dev, scriptptr, dcbent, head, bios->fp.dual_link);
return 0;
}
int call_lvds_script(struct drm_device *dev, struct dcb_output *dcbent, int head, enum LVDS_script script, int pxclk)
{
/*
* LVDS operations are multiplexed in an effort to present a single API
* which works with two vastly differing underlying structures.
* This acts as the demux
*/
struct nouveau_drm *drm = nouveau_drm(dev);
struct nouveau_device *device = nv_device(drm->device);
struct nvbios *bios = &drm->vbios;
uint8_t lvds_ver = bios->data[bios->fp.lvdsmanufacturerpointer];
uint32_t sel_clk_binding, sel_clk;
int ret;
if (bios->fp.last_script_invoc == (script << 1 | head) || !lvds_ver ||
(lvds_ver >= 0x30 && script == LVDS_INIT))
return 0;
if (!bios->fp.lvds_init_run) {
bios->fp.lvds_init_run = true;
call_lvds_script(dev, dcbent, head, LVDS_INIT, pxclk);
}
if (script == LVDS_PANEL_ON && bios->fp.reset_after_pclk_change)
call_lvds_script(dev, dcbent, head, LVDS_RESET, pxclk);
if (script == LVDS_RESET && bios->fp.power_off_for_reset)
call_lvds_script(dev, dcbent, head, LVDS_PANEL_OFF, pxclk);
NV_INFO(drm, "Calling LVDS script %d:\n", script);
/* don't let script change pll->head binding */
sel_clk_binding = nv_rd32(device, NV_PRAMDAC_SEL_CLK) & 0x50000;
if (lvds_ver < 0x30)
ret = call_lvds_manufacturer_script(dev, dcbent, head, script);
else
ret = run_lvds_table(dev, dcbent, head, script, pxclk);
bios->fp.last_script_invoc = (script << 1 | head);
sel_clk = NVReadRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK) & ~0x50000;
NVWriteRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK, sel_clk | sel_clk_binding);
/* some scripts set a value in NV_PBUS_POWERCTRL_2 and break video overlay */
nv_wr32(device, NV_PBUS_POWERCTRL_2, 0);
return ret;
}
struct lvdstableheader {
uint8_t lvds_ver, headerlen, recordlen;
};
static int parse_lvds_manufacturer_table_header(struct drm_device *dev, struct nvbios *bios, struct lvdstableheader *lth)
{
/*
* BMP version (0xa) LVDS table has a simple header of version and
* record length. The BIT LVDS table has the typical BIT table header:
* version byte, header length byte, record length byte, and a byte for
* the maximum number of records that can be held in the table.
*/
struct nouveau_drm *drm = nouveau_drm(dev);
uint8_t lvds_ver, headerlen, recordlen;
memset(lth, 0, sizeof(struct lvdstableheader));
if (bios->fp.lvdsmanufacturerpointer == 0x0) {
NV_ERROR(drm, "Pointer to LVDS manufacturer table invalid\n");
return -EINVAL;
}
lvds_ver = bios->data[bios->fp.lvdsmanufacturerpointer];
switch (lvds_ver) {
case 0x0a: /* pre NV40 */
headerlen = 2;
recordlen = bios->data[bios->fp.lvdsmanufacturerpointer + 1];
break;
case 0x30: /* NV4x */
headerlen = bios->data[bios->fp.lvdsmanufacturerpointer + 1];
if (headerlen < 0x1f) {
NV_ERROR(drm, "LVDS table header not understood\n");
return -EINVAL;
}
recordlen = bios->data[bios->fp.lvdsmanufacturerpointer + 2];
break;
case 0x40: /* G80/G90 */
headerlen = bios->data[bios->fp.lvdsmanufacturerpointer + 1];
if (headerlen < 0x7) {
NV_ERROR(drm, "LVDS table header not understood\n");
return -EINVAL;
}
recordlen = bios->data[bios->fp.lvdsmanufacturerpointer + 2];
break;
default:
NV_ERROR(drm,
"LVDS table revision %d.%d not currently supported\n",
lvds_ver >> 4, lvds_ver & 0xf);
return -ENOSYS;
}
lth->lvds_ver = lvds_ver;
lth->headerlen = headerlen;
lth->recordlen = recordlen;
return 0;
}
static int
get_fp_strap(struct drm_device *dev, struct nvbios *bios)
{
struct nouveau_device *device = nouveau_dev(dev);
/*
* The fp strap is normally dictated by the "User Strap" in
* PEXTDEV_BOOT_0[20:16], but on BMP cards when bit 2 of the
* Internal_Flags struct at 0x48 is set, the user strap gets overriden
* by the PCI subsystem ID during POST, but not before the previous user
* strap has been committed to CR58 for CR57=0xf on head A, which may be
* read and used instead
*/
if (bios->major_version < 5 && bios->data[0x48] & 0x4)
return NVReadVgaCrtc5758(dev, 0, 0xf) & 0xf;
if (device->card_type >= NV_50)
return (nv_rd32(device, NV_PEXTDEV_BOOT_0) >> 24) & 0xf;
else
return (nv_rd32(device, NV_PEXTDEV_BOOT_0) >> 16) & 0xf;
}
static int parse_fp_mode_table(struct drm_device *dev, struct nvbios *bios)
{
struct nouveau_drm *drm = nouveau_drm(dev);
uint8_t *fptable;
uint8_t fptable_ver, headerlen = 0, recordlen, fpentries = 0xf, fpindex;
int ret, ofs, fpstrapping;
struct lvdstableheader lth;
if (bios->fp.fptablepointer == 0x0) {
/* Apple cards don't have the fp table; the laptops use DDC */
/* The table is also missing on some x86 IGPs */
#ifndef __powerpc__
NV_ERROR(drm, "Pointer to flat panel table invalid\n");
#endif
bios->digital_min_front_porch = 0x4b;
return 0;
}
fptable = &bios->data[bios->fp.fptablepointer];
fptable_ver = fptable[0];
switch (fptable_ver) {
/*
* BMP version 0x5.0x11 BIOSen have version 1 like tables, but no
* version field, and miss one of the spread spectrum/PWM bytes.
* This could affect early GF2Go parts (not seen any appropriate ROMs
* though). Here we assume that a version of 0x05 matches this case
* (combining with a BMP version check would be better), as the
* common case for the panel type field is 0x0005, and that is in
* fact what we are reading the first byte of.
*/
case 0x05: /* some NV10, 11, 15, 16 */
recordlen = 42;
ofs = -1;
break;
case 0x10: /* some NV15/16, and NV11+ */
recordlen = 44;
ofs = 0;
break;
case 0x20: /* NV40+ */
headerlen = fptable[1];
recordlen = fptable[2];
fpentries = fptable[3];
/*
* fptable[4] is the minimum
* RAMDAC_FP_HCRTC -> RAMDAC_FP_HSYNC_START gap
*/
bios->digital_min_front_porch = fptable[4];
ofs = -7;
break;
default:
NV_ERROR(drm,
"FP table revision %d.%d not currently supported\n",
fptable_ver >> 4, fptable_ver & 0xf);
return -ENOSYS;
}
if (!bios->is_mobile) /* !mobile only needs digital_min_front_porch */
return 0;
ret = parse_lvds_manufacturer_table_header(dev, bios, &lth);
if (ret)
return ret;
if (lth.lvds_ver == 0x30 || lth.lvds_ver == 0x40) {
bios->fp.fpxlatetableptr = bios->fp.lvdsmanufacturerpointer +
lth.headerlen + 1;
bios->fp.xlatwidth = lth.recordlen;
}
if (bios->fp.fpxlatetableptr == 0x0) {
NV_ERROR(drm, "Pointer to flat panel xlat table invalid\n");
return -EINVAL;
}
fpstrapping = get_fp_strap(dev, bios);
fpindex = bios->data[bios->fp.fpxlatetableptr +
fpstrapping * bios->fp.xlatwidth];
if (fpindex > fpentries) {
NV_ERROR(drm, "Bad flat panel table index\n");
return -ENOENT;
}
/* nv4x cards need both a strap value and fpindex of 0xf to use DDC */
if (lth.lvds_ver > 0x10)
bios->fp_no_ddc = fpstrapping != 0xf || fpindex != 0xf;
/*
* If either the strap or xlated fpindex value are 0xf there is no
* panel using a strap-derived bios mode present. this condition
* includes, but is different from, the DDC panel indicator above
*/
if (fpstrapping == 0xf || fpindex == 0xf)
return 0;
bios->fp.mode_ptr = bios->fp.fptablepointer + headerlen +
recordlen * fpindex + ofs;
NV_INFO(drm, "BIOS FP mode: %dx%d (%dkHz pixel clock)\n",
ROM16(bios->data[bios->fp.mode_ptr + 11]) + 1,
ROM16(bios->data[bios->fp.mode_ptr + 25]) + 1,
ROM16(bios->data[bios->fp.mode_ptr + 7]) * 10);
return 0;
}
bool nouveau_bios_fp_mode(struct drm_device *dev, struct drm_display_mode *mode)
{
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvbios *bios = &drm->vbios;
uint8_t *mode_entry = &bios->data[bios->fp.mode_ptr];
if (!mode) /* just checking whether we can produce a mode */
return bios->fp.mode_ptr;
memset(mode, 0, sizeof(struct drm_display_mode));
/*
* For version 1.0 (version in byte 0):
* bytes 1-2 are "panel type", including bits on whether Colour/mono,
* single/dual link, and type (TFT etc.)
* bytes 3-6 are bits per colour in RGBX
*/
mode->clock = ROM16(mode_entry[7]) * 10;
/* bytes 9-10 is HActive */
mode->hdisplay = ROM16(mode_entry[11]) + 1;
/*
* bytes 13-14 is HValid Start
* bytes 15-16 is HValid End
*/
mode->hsync_start = ROM16(mode_entry[17]) + 1;
mode->hsync_end = ROM16(mode_entry[19]) + 1;
mode->htotal = ROM16(mode_entry[21]) + 1;
/* bytes 23-24, 27-30 similarly, but vertical */
mode->vdisplay = ROM16(mode_entry[25]) + 1;
mode->vsync_start = ROM16(mode_entry[31]) + 1;
mode->vsync_end = ROM16(mode_entry[33]) + 1;
mode->vtotal = ROM16(mode_entry[35]) + 1;
mode->flags |= (mode_entry[37] & 0x10) ?
DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC;
mode->flags |= (mode_entry[37] & 0x1) ?
DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC;
/*
* bytes 38-39 relate to spread spectrum settings
* bytes 40-43 are something to do with PWM
*/
mode->status = MODE_OK;
mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
drm_mode_set_name(mode);
return bios->fp.mode_ptr;
}
int nouveau_bios_parse_lvds_table(struct drm_device *dev, int pxclk, bool *dl, bool *if_is_24bit)
{
/*
* The LVDS table header is (mostly) described in
* parse_lvds_manufacturer_table_header(): the BIT header additionally
* contains the dual-link transition pxclk (in 10s kHz), at byte 5 - if
* straps are not being used for the panel, this specifies the frequency
* at which modes should be set up in the dual link style.
*
* Following the header, the BMP (ver 0xa) table has several records,
* indexed by a separate xlat table, indexed in turn by the fp strap in
* EXTDEV_BOOT. Each record had a config byte, followed by 6 script
* numbers for use by INIT_SUB which controlled panel init and power,
* and finally a dword of ms to sleep between power off and on
* operations.
*
* In the BIT versions, the table following the header serves as an
* integrated config and xlat table: the records in the table are
* indexed by the FP strap nibble in EXTDEV_BOOT, and each record has
* two bytes - the first as a config byte, the second for indexing the
* fp mode table pointed to by the BIT 'D' table
*
* DDC is not used until after card init, so selecting the correct table
* entry and setting the dual link flag for EDID equipped panels,
* requiring tests against the native-mode pixel clock, cannot be done
* until later, when this function should be called with non-zero pxclk
*/
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvbios *bios = &drm->vbios;
int fpstrapping = get_fp_strap(dev, bios), lvdsmanufacturerindex = 0;
struct lvdstableheader lth;
uint16_t lvdsofs;
int ret, chip_version = bios->chip_version;
ret = parse_lvds_manufacturer_table_header(dev, bios, &lth);
if (ret)
return ret;
switch (lth.lvds_ver) {
case 0x0a: /* pre NV40 */
lvdsmanufacturerindex = bios->data[
bios->fp.fpxlatemanufacturertableptr +
fpstrapping];
/* we're done if this isn't the EDID panel case */
if (!pxclk)
break;
if (chip_version < 0x25) {
/* nv17 behaviour
*
* It seems the old style lvds script pointer is reused
* to select 18/24 bit colour depth for EDID panels.
*/
lvdsmanufacturerindex =
(bios->legacy.lvds_single_a_script_ptr & 1) ?
2 : 0;
if (pxclk >= bios->fp.duallink_transition_clk)
lvdsmanufacturerindex++;
} else if (chip_version < 0x30) {
/* nv28 behaviour (off-chip encoder)
*
* nv28 does a complex dance of first using byte 121 of
* the EDID to choose the lvdsmanufacturerindex, then
* later attempting to match the EDID manufacturer and
* product IDs in a table (signature 'pidt' (panel id
* table?)), setting an lvdsmanufacturerindex of 0 and
* an fp strap of the match index (or 0xf if none)
*/
lvdsmanufacturerindex = 0;
} else {
/* nv31, nv34 behaviour */
lvdsmanufacturerindex = 0;
if (pxclk >= bios->fp.duallink_transition_clk)
lvdsmanufacturerindex = 2;
if (pxclk >= 140000)
lvdsmanufacturerindex = 3;
}
/*
* nvidia set the high nibble of (cr57=f, cr58) to
* lvdsmanufacturerindex in this case; we don't
*/
break;
case 0x30: /* NV4x */
case 0x40: /* G80/G90 */
lvdsmanufacturerindex = fpstrapping;
break;
default:
NV_ERROR(drm, "LVDS table revision not currently supported\n");
return -ENOSYS;
}
lvdsofs = bios->fp.xlated_entry = bios->fp.lvdsmanufacturerpointer + lth.headerlen + lth.recordlen * lvdsmanufacturerindex;
switch (lth.lvds_ver) {
case 0x0a:
bios->fp.power_off_for_reset = bios->data[lvdsofs] & 1;
bios->fp.reset_after_pclk_change = bios->data[lvdsofs] & 2;
bios->fp.dual_link = bios->data[lvdsofs] & 4;
bios->fp.link_c_increment = bios->data[lvdsofs] & 8;
*if_is_24bit = bios->data[lvdsofs] & 16;
break;
case 0x30:
case 0x40:
/*
* No sign of the "power off for reset" or "reset for panel
* on" bits, but it's safer to assume we should
*/
bios->fp.power_off_for_reset = true;
bios->fp.reset_after_pclk_change = true;
/*
* It's ok lvdsofs is wrong for nv4x edid case; dual_link is
* over-written, and if_is_24bit isn't used
*/
bios->fp.dual_link = bios->data[lvdsofs] & 1;
bios->fp.if_is_24bit = bios->data[lvdsofs] & 2;
bios->fp.strapless_is_24bit = bios->data[bios->fp.lvdsmanufacturerpointer + 4];
bios->fp.duallink_transition_clk = ROM16(bios->data[bios->fp.lvdsmanufacturerpointer + 5]) * 10;
break;
}
/* set dual_link flag for EDID case */
if (pxclk && (chip_version < 0x25 || chip_version > 0x28))
bios->fp.dual_link = (pxclk >= bios->fp.duallink_transition_clk);
*dl = bios->fp.dual_link;
return 0;
}
/* 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.
*/
bool
bios_encoder_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;
}
}
int
nouveau_bios_run_display_table(struct drm_device *dev, u16 type, int pclk,
struct dcb_output *dcbent, int crtc)
{
/*
* The display script table is located by the BIT 'U' table.
*
* It contains an array of pointers to various tables describing
* a particular output type. The first 32-bits of the output
* tables contains similar information to a DCB entry, and is
* used to decide whether that particular table is suitable for
* the output you want to access.
*
* The "record header length" field here seems to indicate the
* offset of the first configuration entry in the output tables.
* This is 10 on most cards I've seen, but 12 has been witnessed
* on DP cards, and there's another script pointer within the
* header.
*
* offset + 0 ( 8 bits): version
* offset + 1 ( 8 bits): header length
* offset + 2 ( 8 bits): record length
* offset + 3 ( 8 bits): number of records
* offset + 4 ( 8 bits): record header length
* offset + 5 (16 bits): pointer to first output script table
*/
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvbios *bios = &drm->vbios;
uint8_t *table = &bios->data[bios->display.script_table_ptr];
uint8_t *otable = NULL;
uint16_t script;
int i;
if (!bios->display.script_table_ptr) {
NV_ERROR(drm, "No pointer to output script table\n");
return 1;
}
/*
* Nothing useful has been in any of the pre-2.0 tables I've seen,
* so until they are, we really don't need to care.
*/
if (table[0] < 0x20)
return 1;
if (table[0] != 0x20 && table[0] != 0x21) {
NV_ERROR(drm, "Output script table version 0x%02x unknown\n",
table[0]);
return 1;
}
/*
* The output script tables describing a particular output type
* look as follows:
*
* offset + 0 (32 bits): output this table matches (hash of DCB)
* offset + 4 ( 8 bits): unknown
* offset + 5 ( 8 bits): number of configurations
* offset + 6 (16 bits): pointer to some script
* offset + 8 (16 bits): pointer to some script
*
* headerlen == 10
* offset + 10 : configuration 0
*
* headerlen == 12
* offset + 10 : pointer to some script
* offset + 12 : configuration 0
*
* Each config entry is as follows:
*
* offset + 0 (16 bits): unknown, assumed to be a match value
* offset + 2 (16 bits): pointer to script table (clock set?)
* offset + 4 (16 bits): pointer to script table (reset?)
*
* There doesn't appear to be a count value to say how many
* entries exist in each script table, instead, a 0 value in
* the first 16-bit word seems to indicate both the end of the
* list and the default entry. The second 16-bit word in the
* script tables is a pointer to the script to execute.
*/
NV_DEBUG(drm, "Searching for output entry for %d %d %d\n",
dcbent->type, dcbent->location, dcbent->or);
for (i = 0; i < table[3]; i++) {
otable = ROMPTR(dev, table[table[1] + (i * table[2])]);
if (otable && bios_encoder_match(dcbent, ROM32(otable[0])))
break;
}
if (!otable) {
NV_DEBUG(drm, "failed to match any output table\n");
return 1;
}
if (pclk < -2 || pclk > 0) {
/* Try to find matching script table entry */
for (i = 0; i < otable[5]; i++) {
if (ROM16(otable[table[4] + i*6]) == type)
break;
}
if (i == otable[5]) {
NV_ERROR(drm, "Table 0x%04x not found for %d/%d, "
"using first\n",
type, dcbent->type, dcbent->or);
i = 0;
}
}
if (pclk == 0) {
script = ROM16(otable[6]);
if (!script) {
NV_DEBUG(drm, "output script 0 not found\n");
return 1;
}
NV_DEBUG(drm, "0x%04X: parsing output script 0\n", script);
nouveau_bios_run_init_table(dev, script, dcbent, crtc);
} else
if (pclk == -1) {
script = ROM16(otable[8]);
if (!script) {
NV_DEBUG(drm, "output script 1 not found\n");
return 1;
}
NV_DEBUG(drm, "0x%04X: parsing output script 1\n", script);
nouveau_bios_run_init_table(dev, script, dcbent, crtc);
} else
if (pclk == -2) {
if (table[4] >= 12)
script = ROM16(otable[10]);
else
script = 0;
if (!script) {
NV_DEBUG(drm, "output script 2 not found\n");
return 1;
}
NV_DEBUG(drm, "0x%04X: parsing output script 2\n", script);
nouveau_bios_run_init_table(dev, script, dcbent, crtc);
} else
if (pclk > 0) {
script = ROM16(otable[table[4] + i*6 + 2]);
if (script)
script = clkcmptable(bios, script, pclk);
if (!script) {
NV_DEBUG(drm, "clock script 0 not found\n");
return 1;
}
NV_DEBUG(drm, "0x%04X: parsing clock script 0\n", script);
nouveau_bios_run_init_table(dev, script, dcbent, crtc);
} else
if (pclk < 0) {
script = ROM16(otable[table[4] + i*6 + 4]);
if (script)
script = clkcmptable(bios, script, -pclk);
if (!script) {
NV_DEBUG(drm, "clock script 1 not found\n");
return 1;
}
NV_DEBUG(drm, "0x%04X: parsing clock script 1\n", script);
nouveau_bios_run_init_table(dev, script, dcbent, crtc);
}
return 0;
}
int run_tmds_table(struct drm_device *dev, struct dcb_output *dcbent, int head, int pxclk)
{
/*
* the pxclk parameter is in kHz
*
* This runs the TMDS regs setting code found on BIT bios cards
*
* For ffs(or) == 1 use the first table, for ffs(or) == 2 and
* ffs(or) == 3, use the second.
*/
struct nouveau_drm *drm = nouveau_drm(dev);
struct nouveau_device *device = nv_device(drm->device);
struct nvbios *bios = &drm->vbios;
int cv = bios->chip_version;
uint16_t clktable = 0, scriptptr;
uint32_t sel_clk_binding, sel_clk;
/* pre-nv17 off-chip tmds uses scripts, post nv17 doesn't */
if (cv >= 0x17 && cv != 0x1a && cv != 0x20 &&
dcbent->location != DCB_LOC_ON_CHIP)
return 0;
switch (ffs(dcbent->or)) {
case 1:
clktable = bios->tmds.output0_script_ptr;
break;
case 2:
case 3:
clktable = bios->tmds.output1_script_ptr;
break;
}
if (!clktable) {
NV_ERROR(drm, "Pixel clock comparison table not found\n");
return -EINVAL;
}
scriptptr = clkcmptable(bios, clktable, pxclk);
if (!scriptptr) {
NV_ERROR(drm, "TMDS output init script not found\n");
return -ENOENT;
}
/* don't let script change pll->head binding */
sel_clk_binding = nv_rd32(device, NV_PRAMDAC_SEL_CLK) & 0x50000;
run_digital_op_script(dev, scriptptr, dcbent, head, pxclk >= 165000);
sel_clk = NVReadRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK) & ~0x50000;
NVWriteRAMDAC(dev, 0, NV_PRAMDAC_SEL_CLK, sel_clk | sel_clk_binding);
return 0;
}
static void parse_bios_version(struct drm_device *dev, struct nvbios *bios, uint16_t offset)
{
/*
* offset + 0 (8 bits): Micro version
* offset + 1 (8 bits): Minor version
* offset + 2 (8 bits): Chip version
* offset + 3 (8 bits): Major version
*/
struct nouveau_drm *drm = nouveau_drm(dev);
bios->major_version = bios->data[offset + 3];
bios->chip_version = bios->data[offset + 2];
NV_INFO(drm, "Bios version %02x.%02x.%02x.%02x\n",
bios->data[offset + 3], bios->data[offset + 2],
bios->data[offset + 1], bios->data[offset]);
}
static void parse_script_table_pointers(struct nvbios *bios, uint16_t offset)
{
/*
* Parses the init table segment for pointers used in script execution.
*
* offset + 0 (16 bits): init script tables pointer
* offset + 2 (16 bits): macro index table pointer
* offset + 4 (16 bits): macro table pointer
* offset + 6 (16 bits): condition table pointer
* offset + 8 (16 bits): io condition table pointer
* offset + 10 (16 bits): io flag condition table pointer
* offset + 12 (16 bits): init function table pointer
*/
bios->init_script_tbls_ptr = ROM16(bios->data[offset]);
bios->macro_index_tbl_ptr = ROM16(bios->data[offset + 2]);
bios->macro_tbl_ptr = ROM16(bios->data[offset + 4]);
bios->condition_tbl_ptr = ROM16(bios->data[offset + 6]);
bios->io_condition_tbl_ptr = ROM16(bios->data[offset + 8]);
bios->io_flag_condition_tbl_ptr = ROM16(bios->data[offset + 10]);
bios->init_function_tbl_ptr = ROM16(bios->data[offset + 12]);
}
static int parse_bit_A_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
{
/*
* Parses the load detect values for g80 cards.
*
* offset + 0 (16 bits): loadval table pointer
*/
struct nouveau_drm *drm = nouveau_drm(dev);
uint16_t load_table_ptr;
uint8_t version, headerlen, entrylen, num_entries;
if (bitentry->length != 3) {
NV_ERROR(drm, "Do not understand BIT A table\n");
return -EINVAL;
}
load_table_ptr = ROM16(bios->data[bitentry->offset]);
if (load_table_ptr == 0x0) {
NV_DEBUG(drm, "Pointer to BIT loadval table invalid\n");
return -EINVAL;
}
version = bios->data[load_table_ptr];
if (version != 0x10) {
NV_ERROR(drm, "BIT loadval table version %d.%d not supported\n",
version >> 4, version & 0xF);
return -ENOSYS;
}
headerlen = bios->data[load_table_ptr + 1];
entrylen = bios->data[load_table_ptr + 2];
num_entries = bios->data[load_table_ptr + 3];
if (headerlen != 4 || entrylen != 4 || num_entries != 2) {
NV_ERROR(drm, "Do not understand BIT loadval table\n");
return -EINVAL;
}
/* First entry is normal dac, 2nd tv-out perhaps? */
bios->dactestval = ROM32(bios->data[load_table_ptr + headerlen]) & 0x3ff;
return 0;
}
static int parse_bit_C_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
{
/*
* offset + 8 (16 bits): PLL limits table pointer
*
* There's more in here, but that's unknown.
*/
struct nouveau_drm *drm = nouveau_drm(dev);
if (bitentry->length < 10) {
NV_ERROR(drm, "Do not understand BIT C table\n");
return -EINVAL;
}
bios->pll_limit_tbl_ptr = ROM16(bios->data[bitentry->offset + 8]);
return 0;
}
static int parse_bit_display_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
{
/*
* Parses the flat panel table segment that the bit entry points to.
* Starting at bitentry->offset:
*
* offset + 0 (16 bits): ??? table pointer - seems to have 18 byte
* records beginning with a freq.
* offset + 2 (16 bits): mode table pointer
*/
struct nouveau_drm *drm = nouveau_drm(dev);
if (bitentry->length != 4) {
NV_ERROR(drm, "Do not understand BIT display table\n");
return -EINVAL;
}
bios->fp.fptablepointer = ROM16(bios->data[bitentry->offset + 2]);
return 0;
}
static int parse_bit_init_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
{
/*
* Parses the init table segment that the bit entry points to.
*
* See parse_script_table_pointers for layout
*/
struct nouveau_drm *drm = nouveau_drm(dev);
if (bitentry->length < 14) {
NV_ERROR(drm, "Do not understand init table\n");
return -EINVAL;
}
parse_script_table_pointers(bios, bitentry->offset);
if (bitentry->length >= 16)
bios->some_script_ptr = ROM16(bios->data[bitentry->offset + 14]);
if (bitentry->length >= 18)
bios->init96_tbl_ptr = ROM16(bios->data[bitentry->offset + 16]);
return 0;
}
static int parse_bit_i_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
{
/*
* BIT 'i' (info?) table
*
* offset + 0 (32 bits): BIOS version dword (as in B table)
* offset + 5 (8 bits): BIOS feature byte (same as for BMP?)
* offset + 13 (16 bits): pointer to table containing DAC load
* detection comparison values
*
* There's other things in the table, purpose unknown
*/
struct nouveau_drm *drm = nouveau_drm(dev);
uint16_t daccmpoffset;
uint8_t dacver, dacheaderlen;
if (bitentry->length < 6) {
NV_ERROR(drm, "BIT i table too short for needed information\n");
return -EINVAL;
}
parse_bios_version(dev, bios, bitentry->offset);
/*
* bit 4 seems to indicate a mobile bios (doesn't suffer from BMP's
* Quadro identity crisis), other bits possibly as for BMP feature byte
*/
bios->feature_byte = bios->data[bitentry->offset + 5];
bios->is_mobile = bios->feature_byte & FEATURE_MOBILE;
if (bitentry->length < 15) {
NV_WARN(drm, "BIT i table not long enough for DAC load "
"detection comparison table\n");
return -EINVAL;
}
daccmpoffset = ROM16(bios->data[bitentry->offset + 13]);
/* doesn't exist on g80 */
if (!daccmpoffset)
return 0;
/*
* The first value in the table, following the header, is the
* comparison value, the second entry is a comparison value for
* TV load detection.
*/
dacver = bios->data[daccmpoffset];
dacheaderlen = bios->data[daccmpoffset + 1];
if (dacver != 0x00 && dacver != 0x10) {
NV_WARN(drm, "DAC load detection comparison table version "
"%d.%d not known\n", dacver >> 4, dacver & 0xf);
return -ENOSYS;
}
bios->dactestval = ROM32(bios->data[daccmpoffset + dacheaderlen]);
bios->tvdactestval = ROM32(bios->data[daccmpoffset + dacheaderlen + 4]);
return 0;
}
static int parse_bit_lvds_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
{
/*
* Parses the LVDS table segment that the bit entry points to.
* Starting at bitentry->offset:
*
* offset + 0 (16 bits): LVDS strap xlate table pointer
*/
struct nouveau_drm *drm = nouveau_drm(dev);
if (bitentry->length != 2) {
NV_ERROR(drm, "Do not understand BIT LVDS table\n");
return -EINVAL;
}
/*
* No idea if it's still called the LVDS manufacturer table, but
* the concept's close enough.
*/
bios->fp.lvdsmanufacturerpointer = ROM16(bios->data[bitentry->offset]);
return 0;
}
static int
parse_bit_M_tbl_entry(struct drm_device *dev, struct nvbios *bios,
struct bit_entry *bitentry)
{
/*
* offset + 2 (8 bits): number of options in an
* INIT_RAM_RESTRICT_ZM_REG_GROUP opcode option set
* offset + 3 (16 bits): pointer to strap xlate table for RAM
* restrict option selection
*
* There's a bunch of bits in this table other than the RAM restrict
* stuff that we don't use - their use currently unknown
*/
/*
* Older bios versions don't have a sufficiently long table for
* what we want
*/
if (bitentry->length < 0x5)
return 0;
if (bitentry->version < 2) {
bios->ram_restrict_group_count = bios->data[bitentry->offset + 2];
bios->ram_restrict_tbl_ptr = ROM16(bios->data[bitentry->offset + 3]);
} else {
bios->ram_restrict_group_count = bios->data[bitentry->offset + 0];
bios->ram_restrict_tbl_ptr = ROM16(bios->data[bitentry->offset + 1]);
}
return 0;
}
static int parse_bit_tmds_tbl_entry(struct drm_device *dev, struct nvbios *bios, struct bit_entry *bitentry)
{
/*
* Parses the pointer to the TMDS table
*
* Starting at bitentry->offset:
*
* offset + 0 (16 bits): TMDS table pointer
*
* The TMDS table is typically found just before the DCB table, with a
* characteristic signature of 0x11,0x13 (1.1 being version, 0x13 being
* length?)
*
* At offset +7 is a pointer to a script, which I don't know how to
* run yet.
* At offset +9 is a pointer to another script, likewise
* Offset +11 has a pointer to a table where the first word is a pxclk
* frequency and the second word a pointer to a script, which should be
* run if the comparison pxclk frequency is less than the pxclk desired.
* This repeats for decreasing comparison frequencies
* Offset +13 has a pointer to a similar table
* The selection of table (and possibly +7/+9 script) is dictated by
* "or" from the DCB.
*/
struct nouveau_drm *drm = nouveau_drm(dev);
uint16_t tmdstableptr, script1, script2;
if (bitentry->length != 2) {
NV_ERROR(drm, "Do not understand BIT TMDS table\n");
return -EINVAL;
}
tmdstableptr = ROM16(bios->data[bitentry->offset]);
if (!tmdstableptr) {
NV_ERROR(drm, "Pointer to TMDS table invalid\n");
return -EINVAL;
}
NV_INFO(drm, "TMDS table version %d.%d\n",
bios->data[tmdstableptr] >> 4, bios->data[tmdstableptr] & 0xf);
/* nv50+ has v2.0, but we don't parse it atm */
if (bios->data[tmdstableptr] != 0x11)
return -ENOSYS;
/*
* These two scripts are odd: they don't seem to get run even when
* they are not stubbed.
*/
script1 = ROM16(bios->data[tmdstableptr + 7]);
script2 = ROM16(bios->data[tmdstableptr + 9]);
if (bios->data[script1] != 'q' || bios->data[script2] != 'q')
NV_WARN(drm, "TMDS table script pointers not stubbed\n");
bios->tmds.output0_script_ptr = ROM16(bios->data[tmdstableptr + 11]);
bios->tmds.output1_script_ptr = ROM16(bios->data[tmdstableptr + 13]);
return 0;
}
static int
parse_bit_U_tbl_entry(struct drm_device *dev, struct nvbios *bios,
struct bit_entry *bitentry)
{
/*
* Parses the pointer to the G80 output script tables
*
* Starting at bitentry->offset:
*
* offset + 0 (16 bits): output script table pointer
*/
struct nouveau_drm *drm = nouveau_drm(dev);
uint16_t outputscripttableptr;
if (bitentry->length != 3) {
NV_ERROR(drm, "Do not understand BIT U table\n");
return -EINVAL;
}
outputscripttableptr = ROM16(bios->data[bitentry->offset]);
bios->display.script_table_ptr = outputscripttableptr;
return 0;
}
struct bit_table {
const char id;
int (* const parse_fn)(struct drm_device *, struct nvbios *, struct bit_entry *);
};
#define BIT_TABLE(id, funcid) ((struct bit_table){ id, parse_bit_##funcid##_tbl_entry })
int
bit_table(struct drm_device *dev, u8 id, struct bit_entry *bit)
{
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvbios *bios = &drm->vbios;
u8 entries, *entry;
if (bios->type != NVBIOS_BIT)
return -ENODEV;
entries = bios->data[bios->offset + 10];
entry = &bios->data[bios->offset + 12];
while (entries--) {
if (entry[0] == id) {
bit->id = entry[0];
bit->version = entry[1];
bit->length = ROM16(entry[2]);
bit->offset = ROM16(entry[4]);
bit->data = ROMPTR(dev, entry[4]);
return 0;
}
entry += bios->data[bios->offset + 9];
}
return -ENOENT;
}
static int
parse_bit_table(struct nvbios *bios, const uint16_t bitoffset,
struct bit_table *table)
{
struct drm_device *dev = bios->dev;
struct nouveau_drm *drm = nouveau_drm(dev);
struct bit_entry bitentry;
if (bit_table(dev, table->id, &bitentry) == 0)
return table->parse_fn(dev, bios, &bitentry);
NV_INFO(drm, "BIT table '%c' not found\n", table->id);
return -ENOSYS;
}
static int
parse_bit_structure(struct nvbios *bios, const uint16_t bitoffset)
{
int ret;
/*
* The only restriction on parsing order currently is having 'i' first
* for use of bios->*_version or bios->feature_byte while parsing;
* functions shouldn't be actually *doing* anything apart from pulling
* data from the image into the bios struct, thus no interdependencies
*/
ret = parse_bit_table(bios, bitoffset, &BIT_TABLE('i', i));
if (ret) /* info? */
return ret;
if (bios->major_version >= 0x60) /* g80+ */
parse_bit_table(bios, bitoffset, &BIT_TABLE('A', A));
ret = parse_bit_table(bios, bitoffset, &BIT_TABLE('C', C));
if (ret)
return ret;
parse_bit_table(bios, bitoffset, &BIT_TABLE('D', display));
ret = parse_bit_table(bios, bitoffset, &BIT_TABLE('I', init));
if (ret)
return ret;
parse_bit_table(bios, bitoffset, &BIT_TABLE('M', M)); /* memory? */
parse_bit_table(bios, bitoffset, &BIT_TABLE('L', lvds));
parse_bit_table(bios, bitoffset, &BIT_TABLE('T', tmds));
parse_bit_table(bios, bitoffset, &BIT_TABLE('U', U));
return 0;
}
static int parse_bmp_structure(struct drm_device *dev, struct nvbios *bios, unsigned int offset)
{
/*
* Parses the BMP structure for useful things, but does not act on them
*
* offset + 5: BMP major version
* offset + 6: BMP minor version
* offset + 9: BMP feature byte
* offset + 10: BCD encoded BIOS version
*
* offset + 18: init script table pointer (for bios versions < 5.10h)
* offset + 20: extra init script table pointer (for bios
* versions < 5.10h)
*
* offset + 24: memory init table pointer (used on early bios versions)
* offset + 26: SDR memory sequencing setup data table
* offset + 28: DDR memory sequencing setup data table
*
* offset + 54: index of I2C CRTC pair to use for CRT output
* offset + 55: index of I2C CRTC pair to use for TV output
* offset + 56: index of I2C CRTC pair to use for flat panel output
* offset + 58: write CRTC index for I2C pair 0
* offset + 59: read CRTC index for I2C pair 0
* offset + 60: write CRTC index for I2C pair 1
* offset + 61: read CRTC index for I2C pair 1
*
* offset + 67: maximum internal PLL frequency (single stage PLL)
* offset + 71: minimum internal PLL frequency (single stage PLL)
*
* offset + 75: script table pointers, as described in
* parse_script_table_pointers
*
* offset + 89: TMDS single link output A table pointer
* offset + 91: TMDS single link output B table pointer
* offset + 95: LVDS single link output A table pointer
* offset + 105: flat panel timings table pointer
* offset + 107: flat panel strapping translation table pointer
* offset + 117: LVDS manufacturer panel config table pointer
* offset + 119: LVDS manufacturer strapping translation table pointer
*
* offset + 142: PLL limits table pointer
*
* offset + 156: minimum pixel clock for LVDS dual link
*/
struct nouveau_drm *drm = nouveau_drm(dev);
uint8_t *bmp = &bios->data[offset], bmp_version_major, bmp_version_minor;
uint16_t bmplength;
uint16_t legacy_scripts_offset, legacy_i2c_offset;
/* load needed defaults in case we can't parse this info */
bios->digital_min_front_porch = 0x4b;
bios->fmaxvco = 256000;
bios->fminvco = 128000;
bios->fp.duallink_transition_clk = 90000;
bmp_version_major = bmp[5];
bmp_version_minor = bmp[6];
NV_INFO(drm, "BMP version %d.%d\n",
bmp_version_major, bmp_version_minor);
/*
* Make sure that 0x36 is blank and can't be mistaken for a DCB
* pointer on early versions
*/
if (bmp_version_major < 5)
*(uint16_t *)&bios->data[0x36] = 0;
/*
* Seems that the minor version was 1 for all major versions prior
* to 5. Version 6 could theoretically exist, but I suspect BIT
* happened instead.
*/
if ((bmp_version_major < 5 && bmp_version_minor != 1) || bmp_version_major > 5) {
NV_ERROR(drm, "You have an unsupported BMP version. "
"Please send in your bios\n");
return -ENOSYS;
}
if (bmp_version_major == 0)
/* nothing that's currently useful in this version */
return 0;
else if (bmp_version_major == 1)
bmplength = 44; /* exact for 1.01 */
else if (bmp_version_major == 2)
bmplength = 48; /* exact for 2.01 */
else if (bmp_version_major == 3)
bmplength = 54;
/* guessed - mem init tables added in this version */
else if (bmp_version_major == 4 || bmp_version_minor < 0x1)
/* don't know if 5.0 exists... */
bmplength = 62;
/* guessed - BMP I2C indices added in version 4*/
else if (bmp_version_minor < 0x6)
bmplength = 67; /* exact for 5.01 */
else if (bmp_version_minor < 0x10)
bmplength = 75; /* exact for 5.06 */
else if (bmp_version_minor == 0x10)
bmplength = 89; /* exact for 5.10h */
else if (bmp_version_minor < 0x14)
bmplength = 118; /* exact for 5.11h */
else if (bmp_version_minor < 0x24)
/*
* Not sure of version where pll limits came in;
* certainly exist by 0x24 though.
*/
/* length not exact: this is long enough to get lvds members */
bmplength = 123;
else if (bmp_version_minor < 0x27)
/*
* Length not exact: this is long enough to get pll limit
* member
*/
bmplength = 144;
else
/*
* Length not exact: this is long enough to get dual link
* transition clock.
*/
bmplength = 158;
/* checksum */
if (nv_cksum(bmp, 8)) {
NV_ERROR(drm, "Bad BMP checksum\n");
return -EINVAL;
}
/*
* Bit 4 seems to indicate either a mobile bios or a quadro card --
* mobile behaviour consistent (nv11+), quadro only seen nv18gl-nv36gl
* (not nv10gl), bit 5 that the flat panel tables are present, and
* bit 6 a tv bios.
*/
bios->feature_byte = bmp[9];
parse_bios_version(dev, bios, offset + 10);
if (bmp_version_major < 5 || bmp_version_minor < 0x10)
bios->old_style_init = true;
legacy_scripts_offset = 18;
if (bmp_version_major < 2)
legacy_scripts_offset -= 4;
bios->init_script_tbls_ptr = ROM16(bmp[legacy_scripts_offset]);
bios->extra_init_script_tbl_ptr = ROM16(bmp[legacy_scripts_offset + 2]);
if (bmp_version_major > 2) { /* appears in BMP 3 */
bios->legacy.mem_init_tbl_ptr = ROM16(bmp[24]);
bios->legacy.sdr_seq_tbl_ptr = ROM16(bmp[26]);
bios->legacy.ddr_seq_tbl_ptr = ROM16(bmp[28]);
}
legacy_i2c_offset = 0x48; /* BMP version 2 & 3 */
if (bmplength > 61)
legacy_i2c_offset = offset + 54;
bios->legacy.i2c_indices.crt = bios->data[legacy_i2c_offset];
bios->legacy.i2c_indices.tv = bios->data[legacy_i2c_offset + 1];
bios->legacy.i2c_indices.panel = bios->data[legacy_i2c_offset + 2];
if (bmplength > 74) {
bios->fmaxvco = ROM32(bmp[67]);
bios->fminvco = ROM32(bmp[71]);
}
if (bmplength > 88)
parse_script_table_pointers(bios, offset + 75);
if (bmplength > 94) {
bios->tmds.output0_script_ptr = ROM16(bmp[89]);
bios->tmds.output1_script_ptr = ROM16(bmp[91]);
/*
* Never observed in use with lvds scripts, but is reused for
* 18/24 bit panel interface default for EDID equipped panels
* (if_is_24bit not set directly to avoid any oscillation).
*/
bios->legacy.lvds_single_a_script_ptr = ROM16(bmp[95]);
}
if (bmplength > 108) {
bios->fp.fptablepointer = ROM16(bmp[105]);
bios->fp.fpxlatetableptr = ROM16(bmp[107]);
bios->fp.xlatwidth = 1;
}
if (bmplength > 120) {
bios->fp.lvdsmanufacturerpointer = ROM16(bmp[117]);
bios->fp.fpxlatemanufacturertableptr = ROM16(bmp[119]);
}
if (bmplength > 143)
bios->pll_limit_tbl_ptr = ROM16(bmp[142]);
if (bmplength > 157)
bios->fp.duallink_transition_clk = ROM16(bmp[156]) * 10;
return 0;
}
static uint16_t findstr(uint8_t *data, int n, const uint8_t *str, int len)
{
int i, j;
for (i = 0; i <= (n - len); i++) {
for (j = 0; j < len; j++)
if (data[i + j] != str[j])
break;
if (j == len)
return i;
}
return 0;
}
void *
olddcb_table(struct drm_device *dev)
{
struct nouveau_drm *drm = nouveau_drm(dev);
u8 *dcb = NULL;
if (nv_device(drm->device)->card_type > NV_04)
dcb = ROMPTR(dev, drm->vbios.data[0x36]);
if (!dcb) {
NV_WARN(drm, "No DCB data found in VBIOS\n");
return NULL;
}
if (dcb[0] >= 0x41) {
NV_WARN(drm, "DCB version 0x%02x unknown\n", dcb[0]);
return NULL;
} else
if (dcb[0] >= 0x30) {
if (ROM32(dcb[6]) == 0x4edcbdcb)
return dcb;
} else
if (dcb[0] >= 0x20) {
if (ROM32(dcb[4]) == 0x4edcbdcb)
return dcb;
} else
if (dcb[0] >= 0x15) {
if (!memcmp(&dcb[-7], "DEV_REC", 7))
return dcb;
} else {
/*
* v1.4 (some NV15/16, NV11+) seems the same as v1.5, but
* always has the same single (crt) entry, even when tv-out
* present, so the conclusion is this version cannot really
* be used.
*
* v1.2 tables (some NV6/10, and NV15+) normally have the
* same 5 entries, which are not specific to the card and so
* no use.
*
* v1.2 does have an I2C table that read_dcb_i2c_table can
* handle, but cards exist (nv11 in #14821) with a bad i2c
* table pointer, so use the indices parsed in
* parse_bmp_structure.
*
* v1.1 (NV5+, maybe some NV4) is entirely unhelpful
*/
NV_WARN(drm, "No useful DCB data in VBIOS\n");
return NULL;
}
NV_WARN(drm, "DCB header validation failed\n");
return NULL;
}
void *
olddcb_outp(struct drm_device *dev, u8 idx)
{
u8 *dcb = olddcb_table(dev);
if (dcb && dcb[0] >= 0x30) {
if (idx < dcb[2])
return dcb + dcb[1] + (idx * dcb[3]);
} else
if (dcb && dcb[0] >= 0x20) {
u8 *i2c = ROMPTR(dev, dcb[2]);
u8 *ent = dcb + 8 + (idx * 8);
if (i2c && ent < i2c)
return ent;
} else
if (dcb && dcb[0] >= 0x15) {
u8 *i2c = ROMPTR(dev, dcb[2]);
u8 *ent = dcb + 4 + (idx * 10);
if (i2c && ent < i2c)
return ent;
}
return NULL;
}
int
olddcb_outp_foreach(struct drm_device *dev, void *data,
int (*exec)(struct drm_device *, void *, int idx, u8 *outp))
{
int ret, idx = -1;
u8 *outp = NULL;
while ((outp = olddcb_outp(dev, ++idx))) {
if (ROM32(outp[0]) == 0x00000000)
break; /* seen on an NV11 with DCB v1.5 */
if (ROM32(outp[0]) == 0xffffffff)
break; /* seen on an NV17 with DCB v2.0 */
if ((outp[0] & 0x0f) == DCB_OUTPUT_UNUSED)
continue;
if ((outp[0] & 0x0f) == DCB_OUTPUT_EOL)
break;
ret = exec(dev, data, idx, outp);
if (ret)
return ret;
}
return 0;
}
u8 *
olddcb_conntab(struct drm_device *dev)
{
u8 *dcb = olddcb_table(dev);
if (dcb && dcb[0] >= 0x30 && dcb[1] >= 0x16) {
u8 *conntab = ROMPTR(dev, dcb[0x14]);
if (conntab && conntab[0] >= 0x30 && conntab[0] <= 0x40)
return conntab;
}
return NULL;
}
u8 *
olddcb_conn(struct drm_device *dev, u8 idx)
{
u8 *conntab = olddcb_conntab(dev);
if (conntab && idx < conntab[2])
return conntab + conntab[1] + (idx * conntab[3]);
return NULL;
}
static struct dcb_output *new_dcb_entry(struct dcb_table *dcb)
{
struct dcb_output *entry = &dcb->entry[dcb->entries];
memset(entry, 0, sizeof(struct dcb_output));
entry->index = dcb->entries++;
return entry;
}
static void fabricate_dcb_output(struct dcb_table *dcb, int type, int i2c,
int heads, int or)
{
struct dcb_output *entry = new_dcb_entry(dcb);
entry->type = type;
entry->i2c_index = i2c;
entry->heads = heads;
if (type != DCB_OUTPUT_ANALOG)
entry->location = !DCB_LOC_ON_CHIP; /* ie OFF CHIP */
entry->or = or;
}
static bool
parse_dcb20_entry(struct drm_device *dev, struct dcb_table *dcb,
uint32_t conn, uint32_t conf, struct dcb_output *entry)
{
struct nouveau_drm *drm = nouveau_drm(dev);
entry->type = conn & 0xf;
entry->i2c_index = (conn >> 4) & 0xf;
entry->heads = (conn >> 8) & 0xf;
entry->connector = (conn >> 12) & 0xf;
entry->bus = (conn >> 16) & 0xf;
entry->location = (conn >> 20) & 0x3;
entry->or = (conn >> 24) & 0xf;
switch (entry->type) {
case DCB_OUTPUT_ANALOG:
/*
* Although the rest of a CRT conf dword is usually
* zeros, mac biosen have stuff there so we must mask
*/
entry->crtconf.maxfreq = (dcb->version < 0x30) ?
(conf & 0xffff) * 10 :
(conf & 0xff) * 10000;
break;
case DCB_OUTPUT_LVDS:
{
uint32_t mask;
if (conf & 0x1)
entry->lvdsconf.use_straps_for_mode = true;
if (dcb->version < 0x22) {
mask = ~0xd;
/*
* The laptop in bug 14567 lies and claims to not use
* straps when it does, so assume all DCB 2.0 laptops
* use straps, until a broken EDID using one is produced
*/
entry->lvdsconf.use_straps_for_mode = true;
/*
* Both 0x4 and 0x8 show up in v2.0 tables; assume they
* mean the same thing (probably wrong, but might work)
*/
if (conf & 0x4 || conf & 0x8)
entry->lvdsconf.use_power_scripts = true;
} else {
mask = ~0x7;
if (conf & 0x2)
entry->lvdsconf.use_acpi_for_edid = true;
if (conf & 0x4)
entry->lvdsconf.use_power_scripts = true;
entry->lvdsconf.sor.link = (conf & 0x00000030) >> 4;
}
if (conf & mask) {
/*
* Until we even try to use these on G8x, it's
* useless reporting unknown bits. They all are.
*/
if (dcb->version >= 0x40)
break;
NV_ERROR(drm, "Unknown LVDS configuration bits, "
"please report\n");
}
break;
}
case DCB_OUTPUT_TV:
{
if (dcb->version >= 0x30)
entry->tvconf.has_component_output = conf & (0x8 << 4);
else
entry->tvconf.has_component_output = false;
break;
}
case DCB_OUTPUT_DP:
entry->dpconf.sor.link = (conf & 0x00000030) >> 4;
switch ((conf & 0x00e00000) >> 21) {
case 0:
entry->dpconf.link_bw = 162000;
break;
default:
entry->dpconf.link_bw = 270000;
break;
}
switch ((conf & 0x0f000000) >> 24) {
case 0xf:
entry->dpconf.link_nr = 4;
break;
case 0x3:
entry->dpconf.link_nr = 2;
break;
default:
entry->dpconf.link_nr = 1;
break;
}
break;
case DCB_OUTPUT_TMDS:
if (dcb->version >= 0x40)
entry->tmdsconf.sor.link = (conf & 0x00000030) >> 4;
else if (dcb->version >= 0x30)
entry->tmdsconf.slave_addr = (conf & 0x00000700) >> 8;
else if (dcb->version >= 0x22)
entry->tmdsconf.slave_addr = (conf & 0x00000070) >> 4;
break;
case DCB_OUTPUT_EOL:
/* weird g80 mobile type that "nv" treats as a terminator */
dcb->entries--;
return false;
default:
break;
}
if (dcb->version < 0x40) {
/* Normal entries consist of a single bit, but dual link has
* the next most significant bit set too
*/
entry->duallink_possible =
((1 << (ffs(entry->or) - 1)) * 3 == entry->or);
} else {
entry->duallink_possible = (entry->sorconf.link == 3);
}
/* unsure what DCB version introduces this, 3.0? */
if (conf & 0x100000)
entry->i2c_upper_default = true;
return true;
}
static bool
parse_dcb15_entry(struct drm_device *dev, struct dcb_table *dcb,
uint32_t conn, uint32_t conf, struct dcb_output *entry)
{
struct nouveau_drm *drm = nouveau_drm(dev);
switch (conn & 0x0000000f) {
case 0:
entry->type = DCB_OUTPUT_ANALOG;
break;
case 1:
entry->type = DCB_OUTPUT_TV;
break;
case 2:
case 4:
if (conn & 0x10)
entry->type = DCB_OUTPUT_LVDS;
else
entry->type = DCB_OUTPUT_TMDS;
break;
case 3:
entry->type = DCB_OUTPUT_LVDS;
break;
default:
NV_ERROR(drm, "Unknown DCB type %d\n", conn & 0x0000000f);
return false;
}
entry->i2c_index = (conn & 0x0003c000) >> 14;
entry->heads = ((conn & 0x001c0000) >> 18) + 1;
entry->or = entry->heads; /* same as heads, hopefully safe enough */
entry->location = (conn & 0x01e00000) >> 21;
entry->bus = (conn & 0x0e000000) >> 25;
entry->duallink_possible = false;
switch (entry->type) {
case DCB_OUTPUT_ANALOG:
entry->crtconf.maxfreq = (conf & 0xffff) * 10;
break;
case DCB_OUTPUT_TV:
entry->tvconf.has_component_output = false;
break;
case DCB_OUTPUT_LVDS:
if ((conn & 0x00003f00) >> 8 != 0x10)
entry->lvdsconf.use_straps_for_mode = true;
entry->lvdsconf.use_power_scripts = true;
break;
default:
break;
}
return true;
}
static
void merge_like_dcb_entries(struct drm_device *dev, struct dcb_table *dcb)
{
/*
* DCB v2.0 lists each output combination separately.
* Here we merge compatible entries to have fewer outputs, with
* more options
*/
struct nouveau_drm *drm = nouveau_drm(dev);
int i, newentries = 0;
for (i = 0; i < dcb->entries; i++) {
struct dcb_output *ient = &dcb->entry[i];
int j;
for (j = i + 1; j < dcb->entries; j++) {
struct dcb_output *jent = &dcb->entry[j];
if (jent->type == 100) /* already merged entry */
continue;
/* merge heads field when all other fields the same */
if (jent->i2c_index == ient->i2c_index &&
jent->type == ient->type &&
jent->location == ient->location &&
jent->or == ient->or) {
NV_INFO(drm, "Merging DCB entries %d and %d\n",
i, j);
ient->heads |= jent->heads;
jent->type = 100; /* dummy value */
}
}
}
/* Compact entries merged into others out of dcb */
for (i = 0; i < dcb->entries; i++) {
if (dcb->entry[i].type == 100)
continue;
if (newentries != i) {
dcb->entry[newentries] = dcb->entry[i];
dcb->entry[newentries].index = newentries;
}
newentries++;
}
dcb->entries = newentries;
}
static bool
apply_dcb_encoder_quirks(struct drm_device *dev, int idx, u32 *conn, u32 *conf)
{
struct nouveau_drm *drm = nouveau_drm(dev);
struct dcb_table *dcb = &drm->vbios.dcb;
/* Dell Precision M6300
* DCB entry 2: 02025312 00000010
* DCB entry 3: 02026312 00000020
*
* Identical, except apparently a different connector on a
* different SOR link. Not a clue how we're supposed to know
* which one is in use if it even shares an i2c line...
*
* Ignore the connector on the second SOR link to prevent
* nasty problems until this is sorted (assuming it's not a
* VBIOS bug).
*/
if (nv_match_device(dev, 0x040d, 0x1028, 0x019b)) {
if (*conn == 0x02026312 && *conf == 0x00000020)
return false;
}
/* GeForce3 Ti 200
*
* DCB reports an LVDS output that should be TMDS:
* DCB entry 1: f2005014 ffffffff
*/
if (nv_match_device(dev, 0x0201, 0x1462, 0x8851)) {
if (*conn == 0xf2005014 && *conf == 0xffffffff) {
fabricate_dcb_output(dcb, DCB_OUTPUT_TMDS, 1, 1, 1);
return false;
}
}
/* XFX GT-240X-YA
*
* So many things wrong here, replace the entire encoder table..
*/
if (nv_match_device(dev, 0x0ca3, 0x1682, 0x3003)) {
if (idx == 0) {
*conn = 0x02001300; /* VGA, connector 1 */
*conf = 0x00000028;
} else
if (idx == 1) {
*conn = 0x01010312; /* DVI, connector 0 */
*conf = 0x00020030;
} else
if (idx == 2) {
*conn = 0x01010310; /* VGA, connector 0 */
*conf = 0x00000028;
} else
if (idx == 3) {
*conn = 0x02022362; /* HDMI, connector 2 */
*conf = 0x00020010;
} else {
*conn = 0x0000000e; /* EOL */
*conf = 0x00000000;
}
}
/* Some other twisted XFX board (rhbz#694914)
*
* The DVI/VGA encoder combo that's supposed to represent the
* DVI-I connector actually point at two different ones, and
* the HDMI connector ends up paired with the VGA instead.
*
* Connector table is missing anything for VGA at all, pointing it
* an invalid conntab entry 2 so we figure it out ourself.
*/
if (nv_match_device(dev, 0x0615, 0x1682, 0x2605)) {
if (idx == 0) {
*conn = 0x02002300; /* VGA, connector 2 */
*conf = 0x00000028;
} else
if (idx == 1) {
*conn = 0x01010312; /* DVI, connector 0 */
*conf = 0x00020030;
} else
if (idx == 2) {
*conn = 0x04020310; /* VGA, connector 0 */
*conf = 0x00000028;
} else
if (idx == 3) {
*conn = 0x02021322; /* HDMI, connector 1 */
*conf = 0x00020010;
} else {
*conn = 0x0000000e; /* EOL */
*conf = 0x00000000;
}
}
/* fdo#50830: connector indices for VGA and DVI-I are backwards */
if (nv_match_device(dev, 0x0421, 0x3842, 0xc793)) {
if (idx == 0 && *conn == 0x02000300)
*conn = 0x02011300;
else
if (idx == 1 && *conn == 0x04011310)
*conn = 0x04000310;
else
if (idx == 2 && *conn == 0x02011312)
*conn = 0x02000312;
}
return true;
}
static void
fabricate_dcb_encoder_table(struct drm_device *dev, struct nvbios *bios)
{
struct dcb_table *dcb = &bios->dcb;
int all_heads = (nv_two_heads(dev) ? 3 : 1);
#ifdef __powerpc__
/* Apple iMac G4 NV17 */
if (of_machine_is_compatible("PowerMac4,5")) {
fabricate_dcb_output(dcb, DCB_OUTPUT_TMDS, 0, all_heads, 1);
fabricate_dcb_output(dcb, DCB_OUTPUT_ANALOG, 1, all_heads, 2);
return;
}
#endif
/* Make up some sane defaults */
fabricate_dcb_output(dcb, DCB_OUTPUT_ANALOG,
bios->legacy.i2c_indices.crt, 1, 1);
if (nv04_tv_identify(dev, bios->legacy.i2c_indices.tv) >= 0)
fabricate_dcb_output(dcb, DCB_OUTPUT_TV,
bios->legacy.i2c_indices.tv,
all_heads, 0);
else if (bios->tmds.output0_script_ptr ||
bios->tmds.output1_script_ptr)
fabricate_dcb_output(dcb, DCB_OUTPUT_TMDS,
bios->legacy.i2c_indices.panel,
all_heads, 1);
}
static int
parse_dcb_entry(struct drm_device *dev, void *data, int idx, u8 *outp)
{
struct nouveau_drm *drm = nouveau_drm(dev);
struct dcb_table *dcb = &drm->vbios.dcb;
u32 conf = (dcb->version >= 0x20) ? ROM32(outp[4]) : ROM32(outp[6]);
u32 conn = ROM32(outp[0]);
bool ret;
if (apply_dcb_encoder_quirks(dev, idx, &conn, &conf)) {
struct dcb_output *entry = new_dcb_entry(dcb);
NV_INFO(drm, "DCB outp %02d: %08x %08x\n", idx, conn, conf);
if (dcb->version >= 0x20)
ret = parse_dcb20_entry(dev, dcb, conn, conf, entry);
else
ret = parse_dcb15_entry(dev, dcb, conn, conf, entry);
if (!ret)
return 1; /* stop parsing */
/* Ignore the I2C index for on-chip TV-out, as there
* are cards with bogus values (nv31m in bug 23212),
* and it's otherwise useless.
*/
if (entry->type == DCB_OUTPUT_TV &&
entry->location == DCB_LOC_ON_CHIP)
entry->i2c_index = 0x0f;
}
return 0;
}
static void
dcb_fake_connectors(struct nvbios *bios)
{
struct dcb_table *dcbt = &bios->dcb;
u8 map[16] = { };
int i, idx = 0;
/* heuristic: if we ever get a non-zero connector field, assume
* that all the indices are valid and we don't need fake them.
*
* and, as usual, a blacklist of boards with bad bios data..
*/
if (!nv_match_device(bios->dev, 0x0392, 0x107d, 0x20a2)) {
for (i = 0; i < dcbt->entries; i++) {
if (dcbt->entry[i].connector)
return;
}
}
/* no useful connector info available, we need to make it up
* ourselves. the rule here is: anything on the same i2c bus
* is considered to be on the same connector. any output
* without an associated i2c bus is assigned its own unique
* connector index.
*/
for (i = 0; i < dcbt->entries; i++) {
u8 i2c = dcbt->entry[i].i2c_index;
if (i2c == 0x0f) {
dcbt->entry[i].connector = idx++;
} else {
if (!map[i2c])
map[i2c] = ++idx;
dcbt->entry[i].connector = map[i2c] - 1;
}
}
/* if we created more than one connector, destroy the connector
* table - just in case it has random, rather than stub, entries.
*/
if (i > 1) {
u8 *conntab = olddcb_conntab(bios->dev);
if (conntab)
conntab[0] = 0x00;
}
}
static int
parse_dcb_table(struct drm_device *dev, struct nvbios *bios)
{
struct nouveau_drm *drm = nouveau_drm(dev);
struct dcb_table *dcb = &bios->dcb;
u8 *dcbt, *conn;
int idx;
dcbt = olddcb_table(dev);
if (!dcbt) {
/* handle pre-DCB boards */
if (bios->type == NVBIOS_BMP) {
fabricate_dcb_encoder_table(dev, bios);
return 0;
}
return -EINVAL;
}
NV_INFO(drm, "DCB version %d.%d\n", dcbt[0] >> 4, dcbt[0] & 0xf);
dcb->version = dcbt[0];
olddcb_outp_foreach(dev, NULL, parse_dcb_entry);
/*
* apart for v2.1+ not being known for requiring merging, this
* guarantees dcbent->index is the index of the entry in the rom image
*/
if (dcb->version < 0x21)
merge_like_dcb_entries(dev, dcb);
if (!dcb->entries)
return -ENXIO;
/* dump connector table entries to log, if any exist */
idx = -1;
while ((conn = olddcb_conn(dev, ++idx))) {
if (conn[0] != 0xff) {
NV_INFO(drm, "DCB conn %02d: ", idx);
if (olddcb_conntab(dev)[3] < 4)
printk("%04x\n", ROM16(conn[0]));
else
printk("%08x\n", ROM32(conn[0]));
}
}
dcb_fake_connectors(bios);
return 0;
}
static int load_nv17_hwsq_ucode_entry(struct drm_device *dev, struct nvbios *bios, uint16_t hwsq_offset, int entry)
{
/*
* The header following the "HWSQ" signature has the number of entries,
* and the entry size
*
* An entry consists of a dword to write to the sequencer control reg
* (0x00001304), followed by the ucode bytes, written sequentially,
* starting at reg 0x00001400
*/
struct nouveau_drm *drm = nouveau_drm(dev);
struct nouveau_device *device = nv_device(drm->device);
uint8_t bytes_to_write;
uint16_t hwsq_entry_offset;
int i;
if (bios->data[hwsq_offset] <= entry) {
NV_ERROR(drm, "Too few entries in HW sequencer table for "
"requested entry\n");
return -ENOENT;
}
bytes_to_write = bios->data[hwsq_offset + 1];
if (bytes_to_write != 36) {
NV_ERROR(drm, "Unknown HW sequencer entry size\n");
return -EINVAL;
}
NV_INFO(drm, "Loading NV17 power sequencing microcode\n");
hwsq_entry_offset = hwsq_offset + 2 + entry * bytes_to_write;
/* set sequencer control */
nv_wr32(device, 0x00001304, ROM32(bios->data[hwsq_entry_offset]));
bytes_to_write -= 4;
/* write ucode */
for (i = 0; i < bytes_to_write; i += 4)
nv_wr32(device, 0x00001400 + i, ROM32(bios->data[hwsq_entry_offset + i + 4]));
/* twiddle NV_PBUS_DEBUG_4 */
nv_wr32(device, NV_PBUS_DEBUG_4, nv_rd32(device, NV_PBUS_DEBUG_4) | 0x18);
return 0;
}
static int load_nv17_hw_sequencer_ucode(struct drm_device *dev,
struct nvbios *bios)
{
/*
* BMP based cards, from NV17, need a microcode loading to correctly
* control the GPIO etc for LVDS panels
*
* BIT based cards seem to do this directly in the init scripts
*
* The microcode entries are found by the "HWSQ" signature.
*/
const uint8_t hwsq_signature[] = { 'H', 'W', 'S', 'Q' };
const int sz = sizeof(hwsq_signature);
int hwsq_offset;
hwsq_offset = findstr(bios->data, bios->length, hwsq_signature, sz);
if (!hwsq_offset)
return 0;
/* always use entry 0? */
return load_nv17_hwsq_ucode_entry(dev, bios, hwsq_offset + sz, 0);
}
uint8_t *nouveau_bios_embedded_edid(struct drm_device *dev)
{
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvbios *bios = &drm->vbios;
const uint8_t edid_sig[] = {
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 };
uint16_t offset = 0;
uint16_t newoffset;
int searchlen = NV_PROM_SIZE;
if (bios->fp.edid)
return bios->fp.edid;
while (searchlen) {
newoffset = findstr(&bios->data[offset], searchlen,
edid_sig, 8);
if (!newoffset)
return NULL;
offset += newoffset;
if (!nv_cksum(&bios->data[offset], EDID1_LEN))
break;
searchlen -= offset;
offset++;
}
NV_INFO(drm, "Found EDID in BIOS\n");
return bios->fp.edid = &bios->data[offset];
}
static bool NVInitVBIOS(struct drm_device *dev)
{
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvbios *bios = &drm->vbios;
memset(bios, 0, sizeof(struct nvbios));
spin_lock_init(&bios->lock);
bios->dev = dev;
bios->data = nouveau_bios(drm->device)->data;
bios->length = nouveau_bios(drm->device)->size;
return true;
}
static int nouveau_parse_vbios_struct(struct drm_device *dev)
{
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvbios *bios = &drm->vbios;
const uint8_t bit_signature[] = { 0xff, 0xb8, 'B', 'I', 'T' };
const uint8_t bmp_signature[] = { 0xff, 0x7f, 'N', 'V', 0x0 };
int offset;
offset = findstr(bios->data, bios->length,
bit_signature, sizeof(bit_signature));
if (offset) {
NV_INFO(drm, "BIT BIOS found\n");
bios->type = NVBIOS_BIT;
bios->offset = offset;
return parse_bit_structure(bios, offset + 6);
}
offset = findstr(bios->data, bios->length,
bmp_signature, sizeof(bmp_signature));
if (offset) {
NV_INFO(drm, "BMP BIOS found\n");
bios->type = NVBIOS_BMP;
bios->offset = offset;
return parse_bmp_structure(dev, bios, offset);
}
NV_ERROR(drm, "No known BIOS signature found\n");
return -ENODEV;
}
int
nouveau_run_vbios_init(struct drm_device *dev)
{
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvbios *bios = &drm->vbios;
int i, ret = 0;
/* Reset the BIOS head to 0. */
bios->state.crtchead = 0;
if (bios->major_version < 5) /* BMP only */
load_nv17_hw_sequencer_ucode(dev, bios);
if (bios->execute) {
bios->fp.last_script_invoc = 0;
bios->fp.lvds_init_run = false;
}
if (nv_device(drm->device)->card_type >= NV_50) {
for (i = 0; bios->execute && i < bios->dcb.entries; i++) {
nouveau_bios_run_display_table(dev, 0, 0,
&bios->dcb.entry[i], -1);
}
}
return ret;
}
static bool
nouveau_bios_posted(struct drm_device *dev)
{
struct nouveau_drm *drm = nouveau_drm(dev);
unsigned htotal;
if (nv_device(drm->device)->card_type >= NV_50) {
if (NVReadVgaCrtc(dev, 0, 0x00) == 0 &&
NVReadVgaCrtc(dev, 0, 0x1a) == 0)
return false;
return true;
}
htotal = NVReadVgaCrtc(dev, 0, 0x06);
htotal |= (NVReadVgaCrtc(dev, 0, 0x07) & 0x01) << 8;
htotal |= (NVReadVgaCrtc(dev, 0, 0x07) & 0x20) << 4;
htotal |= (NVReadVgaCrtc(dev, 0, 0x25) & 0x01) << 10;
htotal |= (NVReadVgaCrtc(dev, 0, 0x41) & 0x01) << 11;
return (htotal != 0);
}
int
nouveau_bios_init(struct drm_device *dev)
{
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvbios *bios = &drm->vbios;
int ret;
if (!NVInitVBIOS(dev))
return -ENODEV;
ret = nouveau_parse_vbios_struct(dev);
if (ret)
return ret;
ret = parse_dcb_table(dev, bios);
if (ret)
return ret;
if (!bios->major_version) /* we don't run version 0 bios */
return 0;
/* init script execution disabled */
bios->execute = false;
/* ... unless card isn't POSTed already */
if (!nouveau_bios_posted(dev)) {
NV_INFO(drm, "Adaptor not initialised, "
"running VBIOS init tables.\n");
bios->execute = true;
}
ret = nouveau_run_vbios_init(dev);
if (ret)
return ret;
/* feature_byte on BMP is poor, but init always sets CR4B */
if (bios->major_version < 5)
bios->is_mobile = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_4B) & 0x40;
/* all BIT systems need p_f_m_t for digital_min_front_porch */
if (bios->is_mobile || bios->major_version >= 5)
ret = parse_fp_mode_table(dev, bios);
/* allow subsequent scripts to execute */
bios->execute = true;
return 0;
}
void
nouveau_bios_takedown(struct drm_device *dev)
{
}