/* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef _COMMON_GMA_H_ #define _COMMON_GMA_H_ #include #include /* IGD PCI Configuration register */ #define ASLS 0xfc /* OpRegion Base */ #define SWSCI 0xe8 /* SWSCI Register */ #define SWSMISCI 0xe0 /* SWSMISCI Register */ #define GSSCIE (1 << 0) /* SCI Event trigger */ #define SMISCISEL (1 << 15) /* Select SMI or SCI event source */ /* mailbox 0: header */ typedef struct { u8 signature[16]; /* Offset 0 OpRegion signature */ u32 size; /* Offset 16 OpRegion size */ struct opregion_version { u8 rsvd; u8 revision; u8 minor; u8 major; } opver; /* Offset 20 OpRegion version structure */ u8 sbios_version[32]; /* Offset 24 System BIOS build version */ u8 vbios_version[16]; /* Offset 56 Video BIOS build version */ u8 driver_version[16]; /* Offset 72 Graphic drvr build version */ u32 mailboxes; /* Offset 88 Mailboxes supported */ u32 dmod; /* Offset 92 Driver Model */ u32 pcon; /* Offset 96 Platform Capabilities */ u16 dver[16]; /* Offset 100 GOP Version */ u8 reserved[124]; /* Offset 132 Reserved */ } __packed opregion_header_t; #define IGD_OPREGION_SIGNATURE "IntelGraphicsMem" #define IGD_MBOX1 (1 << 0) #define IGD_MBOX2 (1 << 1) #define IGD_MBOX3 (1 << 2) #define IGD_MBOX4 (1 << 3) #define IGD_MBOX5 (1 << 4) #define MAILBOXES_MOBILE (IGD_MBOX1 | IGD_MBOX2 | IGD_MBOX3 | \ IGD_MBOX4 | IGD_MBOX5) #define MAILBOXES_DESKTOP (IGD_MBOX2 | IGD_MBOX4) #define SBIOS_VERSION_SIZE 32 /* mailbox 1: public ACPI methods */ typedef struct { u32 drdy; /* Offset 0 Driver readiness */ u32 csts; /* Offset 4 Status */ u32 cevt; /* Offset 8 Current event */ u8 reserved[20]; /* Offset 12 Reserved */ u32 didl; /* Offset 32 Supported display device 1 */ u32 ddl2; /* Offset 36 Supported display device 2 */ u32 ddl3; /* Offset 40 Supported display device 3 */ u32 ddl4; /* Offset 44 Supported display device 4 */ u32 ddl5; /* Offset 48 Supported display device 5 */ u32 ddl6; /* Offset 52 Supported display device 6 */ u32 ddl7; /* Offset 56 Supported display device 7 */ u32 ddl8; /* Offset 60 Supported display device 8 */ u32 cpdl; /* Offset 64 Currently present display device 1 */ u32 cpl2; /* Offset 68 Currently present display device 2 */ u32 cpl3; /* Offset 72 Currently present display device 3 */ u32 cpl4; /* Offset 76 Currently present display device 4 */ u32 cpl5; /* Offset 80 Currently present display device 5 */ u32 cpl6; /* Offset 84 Currently present display device 6 */ u32 cpl7; /* Offset 88 Currently present display device 7 */ u32 cpl8; /* Offset 92 Currently present display device 8 */ u32 cadl; /* Offset 96 Currently active display device 1 */ u32 cal2; /* Offset 100 Currently active display device 2 */ u32 cal3; /* Offset 104 Currently active display device 3 */ u32 cal4; /* Offset 108 Currently active display device 4 */ u32 cal5; /* Offset 112 Currently active display device 5 */ u32 cal6; /* Offset 116 Currently active display device 6 */ u32 cal7; /* Offset 120 Currently active display device 7 */ u32 cal8; /* Offset 124 Currently active display device 8 */ u32 nadl; /* Offset 128 Next active device 1 */ u32 ndl2; /* Offset 132 Next active device 2 */ u32 ndl3; /* Offset 136 Next active device 3 */ u32 ndl4; /* Offset 140 Next active device 4 */ u32 ndl5; /* Offset 144 Next active device 5 */ u32 ndl6; /* Offset 148 Next active device 6 */ u32 ndl7; /* Offset 152 Next active device 7 */ u32 ndl8; /* Offset 156 Next active device 8 */ u32 aslp; /* Offset 160 ASL sleep timeout */ u32 tidx; /* Offset 164 Toggle table index */ u32 chpd; /* Offset 168 Current hot plug enable indicator */ u32 clid; /* Offset 172 Current lid state indicator */ u32 cdck; /* Offset 176 Current docking state indicator */ u32 sxsw; /* Offset 180 Display Switch notification on Sx State * resume */ u32 evts; /* Offset 184 Events supported by ASL */ u32 cnot; /* Offset 188 Current OS Notification */ u32 nrdy; /* Offset 192 Reasons for DRDY = 0 */ u32 ddl9; /* Offset 196 Extended Supported display device 1 */ u32 dd10; /* Offset 200 Extended Supported display device 2 */ u32 dd11; /* Offset 204 Extended Supported display device 3 */ u32 dd12; /* Offset 208 Extended Supported display device 4 */ u32 dd13; /* Offset 212 Extended Supported display device 5 */ u32 dd14; /* Offset 216 Extended Supported display device 6 */ u32 dd15; /* Offset 220 Extended Supported display device 7 */ u32 cpl9; /* Offset 224 Extended Currently present device 1 */ u32 cp10; /* Offset 228 Extended Currently present device 2 */ u32 cp11; /* Offset 232 Extended Currently present device 3 */ u32 cp12; /* Offset 236 Extended Currently present device 4 */ u32 cp13; /* Offset 240 Extended Currently present device 5 */ u32 cp14; /* Offset 244 Extended Currently present device 6 */ u32 cp15; /* Offset 248 Extended Currently present device 7 */ u8 reserved2[4]; /* Offset 252 Reserved 4 bytes */ } __packed opregion_mailbox1_t; /* mailbox 2: software sci interface */ typedef struct { u32 scic; /* Offset 0 Software SCI function number parameters */ u32 parm; /* Offset 4 Software SCI function number parameters */ u32 dslp; /* Offset 8 Driver sleep timeout */ u8 reserved[244]; /* Offset 12 Reserved */ } __packed opregion_mailbox2_t; /* mailbox 3: power conservation */ typedef struct { u32 ardy; /* Offset 0 Driver readiness */ u32 aslc; /* Offset 4 ASLE interrupt command / status */ u32 tche; /* Offset 8 Technology enabled indicator */ u32 alsi; /* Offset 12 Current ALS illuminance reading */ u32 bclp; /* Offset 16 Backlight britness to set */ u32 pfit; /* Offset 20 Panel fitting Request */ u32 cblv; /* Offset 24 Brightness Current State */ u16 bclm[20]; /* Offset 28 Backlight Brightness Level Duty * Cycle Mapping Table */ u32 cpfm; /* Offset 68 Panel Fitting Current Mode */ u32 epfm; /* Offset 72 Enabled Panel Fitting Modes */ u8 plut[74]; /* Offset 76 Panel Look Up Table */ u32 pfmb; /* Offset 150 PWM Frequency and Minimum * Brightness */ u32 ccdv; /* Offset 154 Color Correction Default Values */ u32 pcft; /* Offset 158 Power Conservation Features */ u32 srot; /* Offset 162 Supported Rotation angle */ u32 iuer; /* Offset 166 Intel Ultrabook Event Register */ u64 fdsp; /* Offset 170 FFS Display Physical address */ u32 fdss; /* Offset 178 FFS Display Size */ u32 stat; /* Offset 182 State Indicator */ u64 rvda; /* Offset 186 (Igd opregion offset 0x3BAh) * Physical address of Raw VBT data */ u32 rvds; /* Offset 194 (Igd opregion offset 0x3C2h) * Size of Raw VBT data */ u8 reserved[58]; /* Offset 198 Reserved */ } __packed opregion_mailbox3_t; #define IGD_BACKLIGHT_BRIGHTNESS 0xff #define IGD_INITIAL_BRIGHTNESS 0x64 #define IGD_FIELD_VALID (1UL << 31) #define IGD_WORD_FIELD_VALID (1 << 15) #define IGD_PFIT_STRETCH 6 /* mailbox 4: vbt */ typedef struct { u8 gvd1[6*KiB]; } __packed opregion_vbt_t; /* Mailbox 5: BIOS to Driver Notification Extension */ typedef struct { u32 phed; /* Offset 7168 Panel Header */ u8 bddc[256]; /* Offset 7172 Panel EDID */ u8 reserved[764]; /* Offset 7428 764 bytes */ } __packed opregion_mailbox5_t; /* IGD OpRegion */ typedef struct { opregion_header_t header; opregion_mailbox1_t mailbox1; opregion_mailbox2_t mailbox2; opregion_mailbox3_t mailbox3; opregion_vbt_t vbt; opregion_mailbox5_t mailbox5; } __packed igd_opregion_t; /* Intel Video BIOS (Option ROM) */ typedef struct { u16 signature; u8 size; u8 reserved[21]; u16 pcir_offset; u16 vbt_offset; } __packed optionrom_header_t; #define OPROM_SIGNATURE 0xaa55 typedef struct { u32 signature; u16 vendor; u16 device; u16 reserved1; u16 length; u8 revision; u8 classcode[3]; u16 imagelength; u16 coderevision; u8 codetype; u8 indicator; u16 reserved2; } __packed optionrom_pcir_t; typedef struct { u8 hdr_signature[20]; u16 hdr_version; u16 hdr_size; u16 hdr_vbt_size; u8 hdr_vbt_checksum; u8 hdr_reserved; u32 hdr_vbt_datablock; u32 hdr_aim[4]; u8 datahdr_signature[16]; u16 datahdr_version; u16 datahdr_size; u16 datahdr_datablocksize; u8 coreblock_id; u16 coreblock_size; u16 coreblock_biossize; u8 coreblock_biostype; u8 coreblock_releasestatus; u8 coreblock_hwsupported; u8 coreblock_integratedhw; u8 coreblock_biosbuild[4]; u8 coreblock_biossignon[155]; } __packed optionrom_vbt_t; enum cb_err intel_gma_init_igd_opregion(void); /* * Returns the CBFS filename of the VBT blob. * * The default implementation returns "vbt.bin", but other implementations can * override this. */ const char *mainboard_vbt_filename(void); /* * locate vbt.bin file. Returns a pointer to its content. * If vbt_size is non-NULL, also return the vbt's size. */ void *locate_vbt(size_t *vbt_size); #endif /* _COMMON_GMA_H_ */