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Elphel
linux-elphel
Commits
ad354aec
Commit
ad354aec
authored
Dec 16, 2016
by
Mikhail Karpenko
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Process late IRQs, add time stamps to datascope
parent
3e584be6
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2
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194 additions
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44 deletions
+194
-44
ahci_elphel.c
src/drivers/ata/ahci_elphel.c
+163
-42
ahci_elphel.h
src/drivers/ata/ahci_elphel.h
+31
-2
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src/drivers/ata/ahci_elphel.c
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ad354aec
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src/drivers/ata/ahci_elphel.h
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ad354aec
...
...
@@ -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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