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-rw-r--r--src/bios_reader/bios_reader.c86
-rw-r--r--src/i830_bios.h172
2 files changed, 238 insertions, 20 deletions
diff --git a/src/bios_reader/bios_reader.c b/src/bios_reader/bios_reader.c
index 29c3edb0..61b492d2 100644
--- a/src/bios_reader/bios_reader.c
+++ b/src/bios_reader/bios_reader.c
@@ -165,7 +165,9 @@ static void dump_general_definitions(void)
{
struct bdb_block *block;
struct bdb_general_definitions *defs;
- unsigned char *lvds_data;
+ struct child_device_config *child;
+ int i;
+ char child_id[11];
block = find_section(BDB_GENERAL_DEFINITIONS);
@@ -173,7 +175,6 @@ static void dump_general_definitions(void)
return;
defs = block->data;
- lvds_data = defs->tv_or_lvds_info;
printf("General definitions block:\n");
@@ -185,10 +186,53 @@ static void dump_general_definitions(void)
printf("\tBoot display type: 0x%02x%02x\n", defs->boot_display[1],
defs->boot_display[0]);
printf("\tTV data block present: %s\n", YESNO(tv_present));
- if (tv_present)
- lvds_data += 33;
- if (lvds_present)
- printf("\tLFP DDC GMBUS addr: 0x%02x\n", lvds_data[19]);
+ for (i = 0; i < 4; i++) {
+ child = &defs->devices[i];
+ if (!child->device_type) {
+ printf("\tChild device %d not present\n", i);
+ continue;
+ }
+ strncpy(child_id, (char *)child->device_id, 10);
+ child_id[10] = 0;
+ printf("\tChild %d device info:\n", i);
+ printf("\t\tSignature: %s\n", child_id);
+ printf("\t\tAIM offset: %d\n", child->addin_offset);
+ printf("\t\tDVO port: 0x%02x\n", child->dvo_port);
+ }
+
+ free(block);
+}
+
+static void dump_child_devices(void)
+{
+ struct bdb_block *block;
+ struct bdb_child_devices *child_devs;
+ struct child_device_config *child;
+ int i;
+
+ block = find_section(BDB_CHILD_DEVICE_TABLE);
+ if (!block) {
+ printf("No child device table found\n");
+ return;
+ }
+
+ child_devs = block->data;
+
+ printf("Child devices block:\n");
+ for (i = 0; i < DEVICE_CHILD_SIZE; i++) {
+ child = &child_devs->children[i];
+ /* Skip nonexistent children */
+ if (!child->device_type)
+ continue;
+ printf("\tChild device %d\n", i);
+ printf("\t\tType: 0x%04x\n", child->device_type);
+ printf("\t\tDVO port: 0x%02x\n", child->dvo_port);
+ printf("\t\tI2C pin: 0x%02x\n", child->i2c_pin);
+ printf("\t\tSlave addr: 0x%02x\n", child->slave_addr);
+ printf("\t\tDDC pin: 0x%02x\n", child->ddc_pin);
+ printf("\t\tDVO config: 0x%02x\n", child->dvo_cfg);
+ printf("\t\tDVO wiring: 0x%02x\n", child->dvo_wiring);
+ }
free(block);
}
@@ -199,9 +243,10 @@ static void dump_lvds_options(void)
struct bdb_lvds_options *options;
block = find_section(BDB_LVDS_OPTIONS);
-
- if (!block)
+ if (!block) {
+ printf("No LVDS options block\n");
return;
+ }
options = block->data;
@@ -228,8 +273,10 @@ static void dump_lvds_ptr_data(void)
struct lvds_fp_timing *fp_timing;
block = find_section(BDB_LVDS_LFP_DATA_PTRS);
- if (!block)
+ if (!block) {
+ printf("No LFP data pointers block\n");
return;
+ }
ptrs = block->data;
fp_timing = (struct lvds_fp_timing *)((uint8_t *)bdb +
@@ -252,8 +299,10 @@ static void dump_lvds_data(void)
int i;
block = find_section(BDB_LVDS_LFP_DATA);
- if (!block)
+ if (!block) {
+ printf("No LVDS data block\n");
return;
+ }
lvds_data = block->data;
num_entries = block->size / sizeof(struct bdb_lvds_lfp_data_entry);
@@ -305,6 +354,8 @@ int main(int argc, char **argv)
int vbt_off, bdb_off, i;
char *filename = "bios";
struct stat finfo;
+ struct bdb_block *block;
+ char signature[17];
if (argc != 2) {
printf("usage: %s <rom file>\n", argv[0]);
@@ -348,11 +399,24 @@ int main(int argc, char **argv)
bdb_off = vbt_off + vbt->bdb_offset;
bdb = (struct bdb_header *)(pI830->VBIOS + bdb_off);
- printf("BDB sig: %16s\n", bdb->signature);
+ strncpy(signature, (char *)bdb->signature, 16);
+ signature[16] = 0;
+ printf("BDB sig: %s\n", signature);
printf("BDB vers: %d.%d\n", bdb->version / 100, bdb->version % 100);
+ printf("Available sections: ");
+ for (i = 0; i < 256; i++) {
+ block = find_section(i);
+ if (!block)
+ continue;
+ printf("%d ", i);
+ free(block);
+ }
+ printf("\n");
+
dump_general_features();
dump_general_definitions();
+// dump_child_devices();
dump_lvds_options();
dump_lvds_data();
dump_lvds_ptr_data();
diff --git a/src/i830_bios.h b/src/i830_bios.h
index 6c8bd935..0a1f4ba6 100644
--- a/src/i830_bios.h
+++ b/src/i830_bios.h
@@ -117,9 +117,96 @@ struct bdb_general_features {
unsigned char rsvd11:6; /* finish byte */
} __attribute__((packed));
+#define GPIO_PIN_NONE 0x00 /* "N/A" */
+#define GPIO_PIN_I2C 0x01 /* "I2C GPIO pins" */
+#define GPIO_PIN_CRT_DDC 0x02 /* "Analog CRT DDC GPIO pins" */
+/* 915+ */
+#define GPIO_PIN_LVDS 0x03 /* "Integrated LVDS DDC GPIO pins" */
+#define GPIO_PIN_SDVO_I2C 0x05 /* "sDVO I2C GPIO pins" */
+#define GPIO_PIN_SDVO_DDC1 0x1D /* "SDVO DDC1 GPIO pins" */
+#define GPIO_PIN_SDVO_DDC2 0x2D /* "SDVO DDC2 GPIO pins" */
+/* pre-915 */
+#define GPIO_PIN_DVI_LVDS 0x03 /* "DVI/LVDS DDC GPIO pins" */
+#define GPIO_PIN_ADD_I2C 0x05 /* "ADDCARD I2C GPIO pins" */
+#define GPIO_PIN_ADD_DDC 0x04 /* "ADDCARD DDC GPIO pins" */
+#define GPIO_PIN_ADD_DDC_I2C 0x06 /* "ADDCARD DDC/I2C GPIO pins" */
+
+/* Pre 915 */
+#define DEVICE_TYPE_NONE 0x00
+#define DEVICE_TYPE_CRT 0x01
+#define DEVICE_TYPE_TV 0x09
+#define DEVICE_TYPE_EFP 0x12
+#define DEVICE_TYPE_LFP 0x22
+/* On 915+ */
+#define DEVICE_TYPE_CRT_DPMS 0x6001
+#define DEVICE_TYPE_CRT_DPMS_HOTPLUG 0x4001
+#define DEVICE_TYPE_TV_COMPOSITE 0x0209
+#define DEVICE_TYPE_TV_MACROVISION 0x0289
+#define DEVICE_TYPE_TV_RF_COMPOSITE 0x020c
+#define DEVICE_TYPE_TV_SVIDEO_COMPOSITE 0x0609
+#define DEVICE_TYPE_TV_SCART 0x0209
+#define DEVICE_TYPE_TV_CODEC_HOTPLUG_PWR 0x6009
+#define DEVICE_TYPE_EFP_HOTPLUG_PWR 0x6012
+#define DEVICE_TYPE_EFP_DVI_HOTPLUG_PWR 0x6052
+#define DEVICE_TYPE_EFP_DVI_I 0x6053
+#define DEVICE_TYPE_EFP_DVI_D_DUAL 0x6152
+#define DEVICE_TYPE_EFP_DVI_D_HDCP 0x60d2
+#define DEVICE_TYPE_OPENLDI_HOTPLUG_PWR 0x6062
+#define DEVICE_TYPE_OPENLDI_DUALPIX 0x6162
+#define DEVICE_TYPE_LFP_PANELLINK 0x5012
+#define DEVICE_TYPE_LFP_CMOS_PWR 0x5042
+#define DEVICE_TYPE_LFP_LVDS_PWR 0x5062
+#define DEVICE_TYPE_LFP_LVDS_DUAL 0x5162
+#define DEVICE_TYPE_LFP_LVDS_DUAL_HDCP 0x51e2
+
+#define DEVICE_CFG_NONE 0x00
+#define DEVICE_CFG_12BIT_DVOB 0x01
+#define DEVICE_CFG_12BIT_DVOC 0x02
+#define DEVICE_CFG_24BIT_DVOBC 0x09
+#define DEVICE_CFG_24BIT_DVOCB 0x0a
+#define DEVICE_CFG_DUAL_DVOB 0x11
+#define DEVICE_CFG_DUAL_DVOC 0x12
+#define DEVICE_CFG_DUAL_DVOBC 0x13
+#define DEVICE_CFG_DUAL_LINK_DVOBC 0x19
+#define DEVICE_CFG_DUAL_LINK_DVOCB 0x1a
+
+#define DEVICE_WIRE_NONE 0x00
+#define DEVICE_WIRE_DVOB 0x01
+#define DEVICE_WIRE_DVOC 0x02
+#define DEVICE_WIRE_DVOBC 0x03
+#define DEVICE_WIRE_DVOBB 0x05
+#define DEVICE_WIRE_DVOCC 0x06
+#define DEVICE_WIRE_DVOB_MASTER 0x0d
+#define DEVICE_WIRE_DVOC_MASTER 0x0e
+
+#define DEVICE_PORT_DVOA 0x00 /* none on 845+ */
+#define DEVICE_PORT_DVOB 0x01
+#define DEVICE_PORT_DVOC 0x02
+
+struct child_device_config {
+ uint16_t handle;
+ uint16_t device_type; /* See DEVICE_TYPE_* above */
+ uint8_t device_id[10];
+ uint16_t addin_offset;
+ uint8_t dvo_port; /* See DEVICE_PORT_* above */
+ uint8_t i2c_pin;
+ uint8_t slave_addr;
+ uint8_t ddc_pin;
+ uint16_t edid_ptr;
+ uint8_t dvo_cfg; /* See DEVICE_CFG_* above */
+ uint8_t dvo2_port;
+ uint8_t i2c2_pin;
+ uint8_t slave2_addr;
+ uint8_t ddc2_pin;
+ uint8_t capabilities;
+ uint8_t dvo_wiring; /* See DEVICE_WIRE_* above */
+ uint8_t dvo2_wiring;
+ uint16_t extended_type;
+ uint8_t dvo_function;
+} __attribute__((packed));
+
struct bdb_general_definitions {
- /* DDC GPIO */
- unsigned char crt_ddc_gmbus_pin;
+ unsigned char crt_ddc_gmbus_pin; /* see GPIO_PIN_* above */
/* DPMS bits */
unsigned char dpms_acpi:1;
@@ -131,15 +218,25 @@ struct bdb_general_definitions {
unsigned char boot_display[2];
unsigned char child_dev_size;
- /* device info */
- unsigned char tv_or_lvds_info[33];
- unsigned char dev1[33];
- unsigned char dev2[33];
- unsigned char dev3[33];
- unsigned char dev4[33];
+ /*
+ * Device info:
+ * If TV is present, it'll be at devices[0]
+ * LVDS will be next, either devices[0] or [1], if present
+ * Max total will be 6, but could be as few as 4 if both
+ * TV and LVDS are missing, so be careful when interpreting
+ * [4] and [5].
+ */
+ struct child_device_config devices[6];
/* may be another device block here on some platforms */
} __attribute__((packed));
+#define DEVICE_CHILD_SIZE 7
+
+struct bdb_child_devices {
+ uint8_t child_structure_size;
+ struct child_device_config children[DEVICE_CHILD_SIZE];
+} __attribute__((packed));
+
struct bdb_lvds_options {
uint8_t panel_type;
uint8_t rsvd1;
@@ -154,6 +251,16 @@ struct bdb_lvds_options {
uint8_t rsvd4;
} __attribute__((packed));
+/* 915+ only */
+struct bdb_tv_features {
+ /* need to verify bit ordering */
+ uint16_t under_over_scan_via_yprpb:2;
+ uint16_t rsvd1:10;
+ uint16_t under_over_scan_via_dvi:2;
+ uint16_t add_overscan_mode:1;
+ uint16_t rsvd2:1;
+} __attribute__((packed));
+
struct lvds_fp_timing {
uint16_t x_res;
uint16_t y_res;
@@ -223,6 +330,40 @@ struct bdb_lvds_lfp_data {
struct bdb_lvds_lfp_data_entry data[16];
} __attribute__((packed));
+#define BACKLIGHT_TYPE_NONE 0
+#define BACKLIGHT_TYPE_I2C 1
+#define BACKLIGHT_TYPE_PWM 2
+
+#define BACKLIGHT_GMBUS_100KHZ 0
+#define BACKLIGHT_GMBUS_50KHZ 1
+#define BACKLIGHT_GMBUS_400KHZ 2
+#define BACKLIGHT_GMBUS_1MHZ 3
+
+struct backlight_info {
+ uint8_t inverter_type:2; /* see BACKLIGHT_TYPE_* above */
+ uint8_t inverter_polarity:1; /* 1 means 0 is max, 255 is min */
+ uint8_t gpio_pins:3; /* see GPIO_PIN_* above */
+ uint8_t gmbus_speed:2;
+ uint16_t pwm_frequency; /* in Hz */
+ uint8_t min_brightness;
+ /* Next two are only for 915+ systems */
+ uint8_t i2c_addr;
+ uint8_t i2c_cmd;
+} __attribute((packed));
+
+struct bdb_backlight_control {
+ uint8_t row_size;
+ struct backlight_info lfps[16];
+} __attribute__((packed));
+
+struct bdb_bia {
+ uint8_t bia_enable:1;
+ uint8_t bia_level:3;
+ uint8_t rsvd1:3;
+ uint8_t als_enable:1;
+ uint8_t als_response_data[20];
+} __attribute((packed));
+
struct aimdb_header {
char signature[16];
char oem_device[20];
@@ -257,6 +398,19 @@ int i830_bios_init(ScrnInfoPtr pScrn);
/*
* Driver<->VBIOS interaction occurs through scratch bits in
* GR18 & SWF*.
+ *
+ * The VBIOS/firmware will signal to the gfx driver through the ASLE interrupt
+ * (visible in the interupt regs at bit 0) when it wants something done.
+ *
+ * Pre-965:
+ * The gfx driver can make calls to the VBIOS/firmware through an SMI request,
+ * generated by writing to offset 0xe0 of the device's config space (see the
+ * publically available 915 PRM for details).
+ *
+ * 965 and above:
+ * IGD OpRegion requests to the VBIOS/firmware are made using SWSCI, which can
+ * be triggered by writing to offset 0xe4 (see the publically available
+ * 965 graphics PRM for details).
*/
/* GR18 bits are set on display switch and hotkey events */
@@ -335,7 +489,7 @@ int i830_bios_init(ScrnInfoPtr pScrn);
#define SWF14_GFX_PFIT_EN (1<<31)
#define SWF14_TEXT_PFIT_EN (1<<30)
-#define SWF14_LID_STATUS_CLOSED (1<<29) /* 0 here means open */
+#define SWF14_LID_SWITCH_EN (1<<29)
#define SWF14_POPUP_EN (1<<28)
#define SWF14_DISPLAY_HOLDOFF (1<<27)
#define SWF14_DISP_DETECT_EN (1<<26)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 04:02:49 +0000