From b6e4ad200a726a32c7083f491383713bc8680f86 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Mon, 12 Nov 2012 09:55:16 +1000 Subject: drm/nouveau: remove (now obsolete) BIT U table parsing from DRM code Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_bios.c | 207 +-------------------------------- 1 file changed, 1 insertion(+), 206 deletions(-) (limited to 'drivers/gpu/drm/nouveau/nouveau_bios.c') diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c index 09fdef235882..395d2b9372c8 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bios.c +++ b/drivers/gpu/drm/nouveau/nouveau_bios.c @@ -652,178 +652,6 @@ bios_encoder_match(struct dcb_output *dcb, u32 hash) } } -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) { /* @@ -1212,31 +1040,6 @@ static int parse_bit_tmds_tbl_entry(struct drm_device *dev, struct nvbios *bios, 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 *); @@ -1313,7 +1116,6 @@ parse_bit_structure(struct nvbios *bios, const uint16_t bitoffset) 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; } @@ -2324,7 +2126,7 @@ nouveau_run_vbios_init(struct drm_device *dev) { struct nouveau_drm *drm = nouveau_drm(dev); struct nvbios *bios = &drm->vbios; - int i, ret = 0; + int ret = 0; /* Reset the BIOS head to 0. */ bios->state.crtchead = 0; @@ -2337,13 +2139,6 @@ nouveau_run_vbios_init(struct drm_device *dev) 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; } -- cgit v1.2.3