diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_bios.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_bios.c | 270 |
1 files changed, 149 insertions, 121 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c index 61c5c3240e31..c7723fb54077 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bios.c +++ b/drivers/gpu/drm/nouveau/nouveau_bios.c @@ -6048,6 +6048,109 @@ parse_dcb_connector_table(struct nvbios *bios) } } +void * +dcb_table(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + u8 *dcb = NULL; + + if (dev_priv->card_type > NV_04) + dcb = ROMPTR(dev, dev_priv->vbios.data[0x36]); + if (!dcb) { + NV_WARNONCE(dev, "No DCB data found in VBIOS\n"); + return NULL; + } + + if (dcb[0] >= 0x41) { + NV_WARNONCE(dev, "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_WARNONCE(dev, "No useful DCB data in VBIOS\n"); + return NULL; + } + + NV_WARNONCE(dev, "DCB header validation failed\n"); + return NULL; +} + +u8 * +dcb_outp(struct drm_device *dev, u8 idx) +{ + u8 *dcb = dcb_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 +dcb_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 = dcb_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) == OUTPUT_UNUSED) + continue; + if ((outp[0] & 0x0f) == OUTPUT_EOL) + break; + + ret = exec(dev, data, idx, outp); + if (ret) + return ret; + } + + return 0; +} + static struct dcb_entry *new_dcb_entry(struct dcb_table *dcb) { struct dcb_entry *entry = &dcb->entry[dcb->entries]; @@ -6251,25 +6354,6 @@ parse_dcb15_entry(struct drm_device *dev, struct dcb_table *dcb, return true; } -static bool parse_dcb_entry(struct drm_device *dev, struct dcb_table *dcb, - uint32_t conn, uint32_t conf) -{ - struct dcb_entry *entry = new_dcb_entry(dcb); - bool ret; - - 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 ret; - - read_dcb_i2c_entry(dev, dcb->version, dcb->i2c_table, - entry->i2c_index, &dcb->i2c[entry->i2c_index]); - - return true; -} - static void merge_like_dcb_entries(struct drm_device *dev, struct dcb_table *dcb) { @@ -6446,88 +6530,62 @@ fabricate_dcb_encoder_table(struct drm_device *dev, struct nvbios *bios) } static int -parse_dcb_table(struct drm_device *dev, struct nvbios *bios) +parse_dcb_entry(struct drm_device *dev, void *data, int idx, u8 *outp) { struct drm_nouveau_private *dev_priv = dev->dev_private; - struct dcb_table *dcb = &bios->dcb; - uint16_t dcbptr = 0, i2ctabptr = 0; - uint8_t *dcbtable; - uint8_t headerlen = 0x4, entries = DCB_MAX_NUM_ENTRIES; - bool configblock = true; - int recordlength = 8, confofs = 4; - int i; + struct dcb_table *dcb = &dev_priv->vbios.dcb; + u32 conf = (dcb->version >= 0x20) ? ROM32(outp[4]) : ROM32(outp[6]); + u32 conn = ROM32(outp[0]); + bool ret; - /* get the offset from 0x36 */ - if (dev_priv->card_type > NV_04) { - dcbptr = ROM16(bios->data[0x36]); - if (dcbptr == 0x0000) - NV_WARN(dev, "No output data (DCB) found in BIOS\n"); - } + if (apply_dcb_encoder_quirks(dev, idx, &conn, &conf)) { + struct dcb_entry *entry = new_dcb_entry(dcb); - /* this situation likely means a really old card, pre DCB */ - if (dcbptr == 0x0) { - fabricate_dcb_encoder_table(dev, bios); - return 0; - } + NV_TRACEWARN(dev, "DCB entry %02d: %08x %08x\n", idx, conn, conf); - dcbtable = &bios->data[dcbptr]; + 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 */ - /* get DCB version */ - dcb->version = dcbtable[0]; - NV_TRACE(dev, "Found Display Configuration Block version %d.%d\n", - dcb->version >> 4, dcb->version & 0xf); + read_dcb_i2c_entry(dev, dcb->version, dcb->i2c_table, + entry->i2c_index, + &dcb->i2c[entry->i2c_index]); + } - if (dcb->version >= 0x20) { /* NV17+ */ - uint32_t sig; + return 0; +} - if (dcb->version >= 0x30) { /* NV40+ */ - headerlen = dcbtable[1]; - entries = dcbtable[2]; - recordlength = dcbtable[3]; - i2ctabptr = ROM16(dcbtable[4]); - sig = ROM32(dcbtable[6]); - dcb->gpio_table_ptr = ROM16(dcbtable[10]); - dcb->connector_table_ptr = ROM16(dcbtable[20]); - } else { - i2ctabptr = ROM16(dcbtable[2]); - sig = ROM32(dcbtable[4]); - headerlen = 8; +static int +parse_dcb_table(struct drm_device *dev, struct nvbios *bios) +{ + struct dcb_table *dcb = &bios->dcb; + u16 i2ctabptr = 0x0000; + u8 *dcbt; + + dcbt = dcb_table(dev); + if (!dcbt) { + /* handle pre-DCB boards */ + if (bios->type == NVBIOS_BMP) { + fabricate_dcb_encoder_table(dev, bios); + return 0; } - if (sig != 0x4edcbdcb) { - NV_ERROR(dev, "Bad Display Configuration Block " - "signature (%08X)\n", sig); - return -EINVAL; - } - } else if (dcb->version >= 0x15) { /* some NV11 and NV20 */ - char sig[8] = { 0 }; + return -EINVAL; + } - strncpy(sig, (char *)&dcbtable[-7], 7); - i2ctabptr = ROM16(dcbtable[2]); - recordlength = 10; - confofs = 6; + NV_TRACE(dev, "DCB version %d.%d\n", dcbt[0] >> 4, dcbt[0] & 0xf); - if (strcmp(sig, "DEV_REC")) { - NV_ERROR(dev, "Bad Display Configuration Block " - "signature (%s)\n", sig); - return -EINVAL; - } - } 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_TRACEWARN(dev, "No useful information in BIOS output table; " - "adding all possible outputs\n"); - fabricate_dcb_encoder_table(dev, bios); - return 0; + dcb->version = dcbt[0]; + if (dcb->version >= 0x30) { + i2ctabptr = ROM16(dcbt[4]); + dcb->gpio_table_ptr = ROM16(dcbt[10]); + dcb->connector_table_ptr = ROM16(dcbt[20]); + } else + if (dcb->version >= 0x15) { + i2ctabptr = ROM16(dcbt[2]); } if (!i2ctabptr) @@ -6543,44 +6601,14 @@ parse_dcb_table(struct drm_device *dev, struct nvbios *bios) */ if (dcb->version >= 0x22) { int idx = (dcb->version >= 0x40 ? - dcb->i2c_default_indices & 0xf : - 2); + dcb->i2c_default_indices & 0xf : 2); read_dcb_i2c_entry(dev, dcb->version, dcb->i2c_table, idx, &dcb->i2c[idx]); } } - if (entries > DCB_MAX_NUM_ENTRIES) - entries = DCB_MAX_NUM_ENTRIES; - - for (i = 0; i < entries; i++) { - uint32_t connection, config = 0; - - connection = ROM32(dcbtable[headerlen + recordlength * i]); - if (configblock) - config = ROM32(dcbtable[headerlen + confofs + recordlength * i]); - - /* seen on an NV11 with DCB v1.5 */ - if (connection == 0x00000000) - break; - - /* seen on an NV17 with DCB v2.0 */ - if (connection == 0xffffffff) - break; - - if ((connection & 0x0000000f) == 0x0000000f) - continue; - - if (!apply_dcb_encoder_quirks(dev, i, &connection, &config)) - continue; - - NV_TRACEWARN(dev, "Raw DCB entry %d: %08x %08x\n", - dcb->entries, connection, config); - - if (!parse_dcb_entry(dev, dcb, connection, config)) - break; - } + dcb_outp_foreach(dev, NULL, parse_dcb_entry); /* * apart for v2.1+ not being known for requiring merging, this |