Commit ad354aec authored by Mikhail Karpenko's avatar Mikhail Karpenko

Process late IRQs, add time stamps to datascope

parent 3e584be6
This diff is collapsed.
......@@ -37,7 +37,9 @@
#define LAST_BLOCK (1 << 3) ///< Flag indicating that the remaining chunk of data will be recorded
#define DELAYED_FINISH (1 << 4) ///< Flag indicating that recording should be stopped right after the last chunk of data is written
#define LOCK_TAIL (1 << 5) ///< Lock current command slot until all data buffers are assigned and the frame is aligned
#define START_EH (1 << 6) ///< start error handling procedure
#define START_EH (1 << 6) ///< Start error handling procedure
#define WAIT_EH (1 << 7) ///< Wait for error handler completion
#define DELAYED_IRQ_RCVD (1 << 8) ///< Delayed interrupt received and should be processed
#define CMD_FIS_LEN 5 ///< The length of a command FIS in double words
#define ADDR_MASK_28_BIT ((u64)0xfffffff)///< This is used to get 28-bit address from 64-bit value
#define MAX_PRDT_LEN 0x3fffff ///< A maximum of length of 4MB may exist for PRDT entry
......@@ -60,7 +62,29 @@
#define INCLUDE_REM 1 ///< Include REM buffer to total size calculation
#define EXCLUDE_REM 0 ///< Exclude REM buffer from total size calculation
#define SPEED_SAMPLES_NUM 5 ///< Maximum number of samples for disk recording speed measurement
#define DEFAULT_CMD_TIMEOUT 500 ///< Default timeout for commands, in ms
#define DEFAULT_CMD_TIMEOUT 100 ///< Default timeout for commands, in ms
#define WAIT_IRQ_TIMEOUT 1000 ///< Wait delayed interrupt for this amount of time, in ms
#define TSTMP_CMD_SYS 1 ///< command issued by system
#define TSTMP_CMD_DRV 2 ///< command issued by driver
#define TSTMP_IRQ_SYS 3 ///< irq processed by system
#define TSTMP_IRQ_DRV 4 ///< irq processed by driver
enum {
PORT_VS = 0x70, ///< vendor specific port address
PORT_TIMESTAMP_ADDR = 0x78 ///< datascope timestamp register
};
struct datascope {
void __iomem *timestamp_reg; ///< register in vendor specific address range (PxVS) where timestamp can be written
unsigned int cmd_cntr; ///< command counter, its value can be found in timestamp (2 bits only)
unsigned int enable; ///< enable/disable timestamps
};
/** Data for error handler */
struct error_handler {
uint32_t s_error;
uint32_t irq_stat;
wait_queue_head_t wait; ///< wait queue for delayed interrupts
};
/** This structure is for collecting some recording statistics */
struct rec_stat {
......@@ -68,6 +92,8 @@ struct rec_stat {
unsigned int samples[SPEED_SAMPLES_NUM]; ///< calculated recording speed samples, the value of recording speed
///< presented via sysfs is a median of this array
sec_usec_t start_time; ///< time when current command has been issued
unsigned long last_irq_delay; ///< late interrupt delay, in ms
unsigned int stat_ready; ///< flag indicating that new statisics sample is ready
};
/** This structure holds raw device buffer pointers */
......@@ -130,6 +156,9 @@ struct elphel_ahci_priv {
struct timer_list cmd_timer; ///< command execution guard timer
unsigned int cmd_timeout; ///< command timeout, in ms
unsigned int io_error_flag; ///< flag indicating IO error was detected, this is flag is exported via sysfs
struct datascope datascope;
struct error_handler eh; ///< error handler data
};
#endif /* _AHCI_ELPHEL_EXT */
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