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/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef _COMMON_GMA_H_
#define _COMMON_GMA_H_
#include <types.h>
#include <commonlib/helpers.h>
/* 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 */
u32 version; /* Offset 20 OpRegion structure version */
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_OPREGION_VERSION 2
#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_ */
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