mirror of https://gitee.com/openkylin/linux.git
iwlwifi: document command header and "alive" responses
Document command header and "alive" responses Signed-off-by: Ben Cahill <ben.m.cahill@intel.com> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ben Cahill
David S. Miller
parent
e385144766
commit
075416cd18
|
|
@ -121,7 +121,7 @@ enum {
|
|||
REPLY_TX_PWR_TABLE_CMD = 0x97,
|
||||
MEASURE_ABORT_NOTIFICATION = 0x99, /* not used */
|
||||
|
||||
/* BT config command */
|
||||
/* Bluetooth device coexistance config command */
|
||||
REPLY_BT_CONFIG = 0x9b,
|
||||
|
||||
/* 4965 Statistics */
|
||||
|
|
@ -144,25 +144,42 @@ enum {
|
|||
*
|
||||
*****************************************************************************/
|
||||
|
||||
/* iwl3945_cmd_header flags value */
|
||||
#define IWL_CMD_FAILED_MSK 0x40
|
||||
|
||||
/**
|
||||
* struct iwl3945_cmd_header
|
||||
*
|
||||
* This header format appears in the beginning of each command sent from the
|
||||
* driver, and each response/notification received from uCode.
|
||||
*/
|
||||
struct iwl3945_cmd_header {
|
||||
u8 cmd;
|
||||
u8 flags;
|
||||
/* We have 15 LSB to use as we please (MSB indicates
|
||||
* a frame Rx'd from the HW). We encode the following
|
||||
* information into the sequence field:
|
||||
u8 cmd; /* Command ID: REPLY_RXON, etc. */
|
||||
u8 flags; /* IWL_CMD_* */
|
||||
/*
|
||||
* The driver sets up the sequence number to values of its chosing.
|
||||
* uCode does not use this value, but passes it back to the driver
|
||||
* when sending the response to each driver-originated command, so
|
||||
* the driver can match the response to the command. Since the values
|
||||
* don't get used by uCode, the driver may set up an arbitrary format.
|
||||
*
|
||||
* 0:7 index in fifo
|
||||
* 8:13 fifo selection
|
||||
* 14:14 bit indicating if this packet references the 'extra'
|
||||
* storage at the end of the memory queue
|
||||
* 15:15 (Rx indication)
|
||||
* There is one exception: uCode sets bit 15 when it originates
|
||||
* the response/notification, i.e. when the response/notification
|
||||
* is not a direct response to a command sent by the driver. For
|
||||
* example, uCode issues REPLY_3945_RX when it sends a received frame
|
||||
* to the driver; it is not a direct response to any driver command.
|
||||
*
|
||||
* The Linux driver uses the following format:
|
||||
*
|
||||
* 0:7 index/position within Tx queue
|
||||
* 8:13 Tx queue selection
|
||||
* 14:14 driver sets this to indicate command is in the 'huge'
|
||||
* storage at the end of the command buffers, i.e. scan cmd
|
||||
* 15:15 uCode sets this in uCode-originated response/notification
|
||||
*/
|
||||
__le16 sequence;
|
||||
|
||||
/* command data follows immediately */
|
||||
/* command or response/notification data follows immediately */
|
||||
u8 data[0];
|
||||
} __attribute__ ((packed));
|
||||
|
||||
|
|
@ -176,15 +193,22 @@ struct iwl3945_cmd_header {
|
|||
#define INITIALIZE_SUBTYPE (9)
|
||||
|
||||
/*
|
||||
* REPLY_ALIVE = 0x1 (response only, not a command)
|
||||
* ("Initialize") REPLY_ALIVE = 0x1 (response only, not a command)
|
||||
*
|
||||
* uCode issues this "initialize alive" notification once the initialization
|
||||
* uCode image has completed its work, and is ready to load the runtime image.
|
||||
* This is the *first* "alive" notification that the driver will receive after
|
||||
* rebooting uCode; the "initialize" alive is indicated by subtype field == 9.
|
||||
*
|
||||
* See comments documenting "BSM" (bootstrap state machine).
|
||||
*/
|
||||
struct iwl3945_alive_resp {
|
||||
struct iwl3945_init_alive_resp {
|
||||
u8 ucode_minor;
|
||||
u8 ucode_major;
|
||||
__le16 reserved1;
|
||||
u8 sw_rev[8];
|
||||
u8 ver_type;
|
||||
u8 ver_subtype;
|
||||
u8 ver_subtype; /* "9" for initialize alive */
|
||||
__le16 reserved2;
|
||||
__le32 log_event_table_ptr;
|
||||
__le32 error_event_table_ptr;
|
||||
|
|
@ -192,16 +216,39 @@ struct iwl3945_alive_resp {
|
|||
__le32 is_valid;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
struct iwl3945_init_alive_resp {
|
||||
|
||||
/**
|
||||
* REPLY_ALIVE = 0x1 (response only, not a command)
|
||||
*
|
||||
* uCode issues this "alive" notification once the runtime image is ready
|
||||
* to receive commands from the driver. This is the *second* "alive"
|
||||
* notification that the driver will receive after rebooting uCode;
|
||||
* this "alive" is indicated by subtype field != 9.
|
||||
*
|
||||
* See comments documenting "BSM" (bootstrap state machine).
|
||||
*
|
||||
* This response includes two pointers to structures within the device's
|
||||
* data SRAM (access via HBUS_TARG_MEM_* regs) that are useful for debugging:
|
||||
*
|
||||
* 1) log_event_table_ptr indicates base of the event log. This traces
|
||||
* a 256-entry history of uCode execution within a circular buffer.
|
||||
*
|
||||
* 2) error_event_table_ptr indicates base of the error log. This contains
|
||||
* information about any uCode error that occurs.
|
||||
*
|
||||
* The Linux driver can print both logs to the system log when a uCode error
|
||||
* occurs.
|
||||
*/
|
||||
struct iwl3945_alive_resp {
|
||||
u8 ucode_minor;
|
||||
u8 ucode_major;
|
||||
__le16 reserved1;
|
||||
u8 sw_rev[8];
|
||||
u8 ver_type;
|
||||
u8 ver_subtype;
|
||||
u8 ver_subtype; /* not "9" for runtime alive */
|
||||
__le16 reserved2;
|
||||
__le32 log_event_table_ptr;
|
||||
__le32 error_event_table_ptr;
|
||||
__le32 log_event_table_ptr; /* SRAM address for event log */
|
||||
__le32 error_event_table_ptr; /* SRAM address for error log */
|
||||
__le32 timestamp;
|
||||
__le32 is_valid;
|
||||
} __attribute__ ((packed));
|
||||
|
|
|
|||
|
|
@ -120,7 +120,7 @@ enum {
|
|||
REPLY_TX_PWR_TABLE_CMD = 0x97,
|
||||
MEASURE_ABORT_NOTIFICATION = 0x99, /* not used */
|
||||
|
||||
/* BT config command */
|
||||
/* Bluetooth device coexistance config command */
|
||||
REPLY_BT_CONFIG = 0x9b,
|
||||
|
||||
/* 4965 Statistics */
|
||||
|
|
@ -151,25 +151,42 @@ enum {
|
|||
*
|
||||
*****************************************************************************/
|
||||
|
||||
/* iwl4965_cmd_header flags value */
|
||||
#define IWL_CMD_FAILED_MSK 0x40
|
||||
|
||||
/**
|
||||
* struct iwl4965_cmd_header
|
||||
*
|
||||
* This header format appears in the beginning of each command sent from the
|
||||
* driver, and each response/notification received from uCode.
|
||||
*/
|
||||
struct iwl4965_cmd_header {
|
||||
u8 cmd;
|
||||
u8 flags;
|
||||
/* We have 15 LSB to use as we please (MSB indicates
|
||||
* a frame Rx'd from the HW). We encode the following
|
||||
* information into the sequence field:
|
||||
u8 cmd; /* Command ID: REPLY_RXON, etc. */
|
||||
u8 flags; /* IWL_CMD_* */
|
||||
/*
|
||||
* The driver sets up the sequence number to values of its chosing.
|
||||
* uCode does not use this value, but passes it back to the driver
|
||||
* when sending the response to each driver-originated command, so
|
||||
* the driver can match the response to the command. Since the values
|
||||
* don't get used by uCode, the driver may set up an arbitrary format.
|
||||
*
|
||||
* 0:7 index in fifo
|
||||
* 8:13 fifo selection
|
||||
* 14:14 bit indicating if this packet references the 'extra'
|
||||
* storage at the end of the memory queue
|
||||
* 15:15 (Rx indication)
|
||||
* There is one exception: uCode sets bit 15 when it originates
|
||||
* the response/notification, i.e. when the response/notification
|
||||
* is not a direct response to a command sent by the driver. For
|
||||
* example, uCode issues REPLY_3945_RX when it sends a received frame
|
||||
* to the driver; it is not a direct response to any driver command.
|
||||
*
|
||||
* The Linux driver uses the following format:
|
||||
*
|
||||
* 0:7 index/position within Tx queue
|
||||
* 8:13 Tx queue selection
|
||||
* 14:14 driver sets this to indicate command is in the 'huge'
|
||||
* storage at the end of the command buffers, i.e. scan cmd
|
||||
* 15:15 uCode sets this in uCode-originated response/notification
|
||||
*/
|
||||
__le16 sequence;
|
||||
|
||||
/* command data follows immediately */
|
||||
/* command or response/notification data follows immediately */
|
||||
u8 data[0];
|
||||
} __attribute__ ((packed));
|
||||
|
||||
|
|
@ -218,28 +235,28 @@ struct iwl4965_cmd_header {
|
|||
#define RATE_MCS_HT_DUP_POS 5
|
||||
#define RATE_MCS_HT_DUP_MSK 0x20
|
||||
|
||||
/* (1) HT format, (0) legacy format in bits 7:0 */
|
||||
/* Bit 8: (1) HT format, (0) legacy format in bits 7:0 */
|
||||
#define RATE_MCS_FLAGS_POS 8
|
||||
#define RATE_MCS_HT_POS 8
|
||||
#define RATE_MCS_HT_MSK 0x100
|
||||
|
||||
/* (1) CCK, (0) OFDM. HT (bit 8) must be "0" for this bit to be valid */
|
||||
/* Bit 9: (1) CCK, (0) OFDM. HT (bit 8) must be "0" for this bit to be valid */
|
||||
#define RATE_MCS_CCK_POS 9
|
||||
#define RATE_MCS_CCK_MSK 0x200
|
||||
|
||||
/* (1) Use Green Field preamble */
|
||||
/* Bit 10: (1) Use Green Field preamble */
|
||||
#define RATE_MCS_GF_POS 10
|
||||
#define RATE_MCS_GF_MSK 0x400
|
||||
|
||||
/* (1) Use 40Mhz FAT channel width, (0) use 20 MHz legacy channel width */
|
||||
/* Bit 11: (1) Use 40Mhz FAT chnl width, (0) use 20 MHz legacy chnl width */
|
||||
#define RATE_MCS_FAT_POS 11
|
||||
#define RATE_MCS_FAT_MSK 0x800
|
||||
|
||||
/* (1) Duplicate data on both 20MHz channels. FAT (bit 11) must be set. */
|
||||
/* Bit 12: (1) Duplicate data on both 20MHz chnls. FAT (bit 11) must be set. */
|
||||
#define RATE_MCS_DUP_POS 12
|
||||
#define RATE_MCS_DUP_MSK 0x1000
|
||||
|
||||
/* (1) Short guard interval (0.4 usec), (0) normal GI (0.8 usec) */
|
||||
/* Bit 13: (1) Short guard interval (0.4 usec), (0) normal GI (0.8 usec) */
|
||||
#define RATE_MCS_SGI_POS 13
|
||||
#define RATE_MCS_SGI_MSK 0x2000
|
||||
|
||||
|
|
@ -266,29 +283,36 @@ struct iwl4965_cmd_header {
|
|||
#define INITIALIZE_SUBTYPE (9)
|
||||
|
||||
/*
|
||||
* REPLY_ALIVE = 0x1 (response only, not a command)
|
||||
* ("Initialize") REPLY_ALIVE = 0x1 (response only, not a command)
|
||||
*
|
||||
* uCode issues this "initialize alive" notification once the initialization
|
||||
* uCode image has completed its work, and is ready to load the runtime image.
|
||||
* This is the *first* "alive" notification that the driver will receive after
|
||||
* rebooting uCode; the "initialize" alive is indicated by subtype field == 9.
|
||||
*
|
||||
* See comments documenting "BSM" (bootstrap state machine).
|
||||
*
|
||||
* For 4965, this notification contains important calibration data for
|
||||
* calculating txpower settings:
|
||||
*
|
||||
* 1) Power supply voltage indication. The voltage sensor outputs higher
|
||||
* values for lower voltage, and vice versa.
|
||||
*
|
||||
* 2) Temperature measurement parameters, for each of two channel widths
|
||||
* (20 MHz and 40 MHz) supported by the radios. Temperature sensing
|
||||
* is done via one of the receiver chains, and channel width influences
|
||||
* the results.
|
||||
*
|
||||
* 3) Tx gain compensation to balance 4965's 2 Tx chains for MIMO operation,
|
||||
* for each of 5 frequency ranges.
|
||||
*/
|
||||
struct iwl4965_alive_resp {
|
||||
u8 ucode_minor;
|
||||
u8 ucode_major;
|
||||
__le16 reserved1;
|
||||
u8 sw_rev[8];
|
||||
u8 ver_type;
|
||||
u8 ver_subtype;
|
||||
__le16 reserved2;
|
||||
__le32 log_event_table_ptr;
|
||||
__le32 error_event_table_ptr;
|
||||
__le32 timestamp;
|
||||
__le32 is_valid;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
struct iwl4965_init_alive_resp {
|
||||
u8 ucode_minor;
|
||||
u8 ucode_major;
|
||||
__le16 reserved1;
|
||||
u8 sw_rev[8];
|
||||
u8 ver_type;
|
||||
u8 ver_subtype;
|
||||
u8 ver_subtype; /* "9" for initialize alive */
|
||||
__le16 reserved2;
|
||||
__le32 log_event_table_ptr;
|
||||
__le32 error_event_table_ptr;
|
||||
|
|
@ -296,8 +320,8 @@ struct iwl4965_init_alive_resp {
|
|||
__le32 is_valid;
|
||||
|
||||
/* calibration values from "initialize" uCode */
|
||||
__le32 voltage; /* signed */
|
||||
__le32 therm_r1[2]; /* signed 1st for normal, 2nd for FAT channel */
|
||||
__le32 voltage; /* signed, higher value is lower voltage */
|
||||
__le32 therm_r1[2]; /* signed, 1st for normal, 2nd for FAT channel*/
|
||||
__le32 therm_r2[2]; /* signed */
|
||||
__le32 therm_r3[2]; /* signed */
|
||||
__le32 therm_r4[2]; /* signed */
|
||||
|
|
@ -305,6 +329,74 @@ struct iwl4965_init_alive_resp {
|
|||
* 2 Tx chains */
|
||||
} __attribute__ ((packed));
|
||||
|
||||
|
||||
/**
|
||||
* REPLY_ALIVE = 0x1 (response only, not a command)
|
||||
*
|
||||
* uCode issues this "alive" notification once the runtime image is ready
|
||||
* to receive commands from the driver. This is the *second* "alive"
|
||||
* notification that the driver will receive after rebooting uCode;
|
||||
* this "alive" is indicated by subtype field != 9.
|
||||
*
|
||||
* See comments documenting "BSM" (bootstrap state machine).
|
||||
*
|
||||
* This response includes two pointers to structures within the device's
|
||||
* data SRAM (access via HBUS_TARG_MEM_* regs) that are useful for debugging:
|
||||
*
|
||||
* 1) log_event_table_ptr indicates base of the event log. This traces
|
||||
* a 256-entry history of uCode execution within a circular buffer.
|
||||
* Its header format is:
|
||||
*
|
||||
* __le32 log_size; log capacity (in number of entries)
|
||||
* __le32 type; (1) timestamp with each entry, (0) no timestamp
|
||||
* __le32 wraps; # times uCode has wrapped to top of circular buffer
|
||||
* __le32 write_index; next circular buffer entry that uCode would fill
|
||||
*
|
||||
* The header is followed by the circular buffer of log entries. Entries
|
||||
* with timestamps have the following format:
|
||||
*
|
||||
* __le32 event_id; range 0 - 1500
|
||||
* __le32 timestamp; low 32 bits of TSF (of network, if associated)
|
||||
* __le32 data; event_id-specific data value
|
||||
*
|
||||
* Entries without timestamps contain only event_id and data.
|
||||
*
|
||||
* 2) error_event_table_ptr indicates base of the error log. This contains
|
||||
* information about any uCode error that occurs. For 4965, the format
|
||||
* of the error log is:
|
||||
*
|
||||
* __le32 valid; (nonzero) valid, (0) log is empty
|
||||
* __le32 error_id; type of error
|
||||
* __le32 pc; program counter
|
||||
* __le32 blink1; branch link
|
||||
* __le32 blink2; branch link
|
||||
* __le32 ilink1; interrupt link
|
||||
* __le32 ilink2; interrupt link
|
||||
* __le32 data1; error-specific data
|
||||
* __le32 data2; error-specific data
|
||||
* __le32 line; source code line of error
|
||||
* __le32 bcon_time; beacon timer
|
||||
* __le32 tsf_low; network timestamp function timer
|
||||
* __le32 tsf_hi; network timestamp function timer
|
||||
*
|
||||
* The Linux driver can print both logs to the system log when a uCode error
|
||||
* occurs.
|
||||
*/
|
||||
struct iwl4965_alive_resp {
|
||||
u8 ucode_minor;
|
||||
u8 ucode_major;
|
||||
__le16 reserved1;
|
||||
u8 sw_rev[8];
|
||||
u8 ver_type;
|
||||
u8 ver_subtype; /* not "9" for runtime alive */
|
||||
__le16 reserved2;
|
||||
__le32 log_event_table_ptr; /* SRAM address for event log */
|
||||
__le32 error_event_table_ptr; /* SRAM address for error log */
|
||||
__le32 timestamp;
|
||||
__le32 is_valid;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
|
||||
union tsf {
|
||||
u8 byte[8];
|
||||
__le16 word[4];
|
||||
|
|
|
|||
Loading…
Reference in New Issue