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soc: qcom: spss_utils: protect from event signaled twice

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avoid event signaled twice.
add ioctl to check if event was signaled.

Change-Id: Ie75b9db86f2badddc08d65eee30ecd6a15795256
Signed-off-by: Amir Samuelov <amirs@codeaurora.org>
This commit is contained in:
Amir Samuelov
2020-02-20 09:29:41 +02:00
committed by Gerrit - the friendly Code Review server
parent 80fded8cc1
commit 86d0cd334f
2 changed files with 131 additions and 19 deletions
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38
include/uapi/linux/spss_utils.h
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@ -19,22 +19,37 @@
#define SPSS_IOC_MAGIC 'S'
/* ---------- set fw cmac --------------------------------- */
#define NUM_SPU_UEFI_APPS 3
#define NUM_SPU_UEFI_APPS 3
#define CMAC_SIZE_IN_WORDS 4
struct spss_ioc_set_fw_cmac {
uint32_t cmac[4];
uint32_t app_cmacs[NUM_SPU_UEFI_APPS][4];
uint32_t cmac[CMAC_SIZE_IN_WORDS];
uint32_t app_cmacs[NUM_SPU_UEFI_APPS][CMAC_SIZE_IN_WORDS];
} __packed;
#define SPSS_IOC_SET_FW_CMAC \
_IOWR(SPSS_IOC_MAGIC, 1, struct spss_ioc_set_fw_cmac)
/* ---------- wait for event ------------------------------ */
#define SPSS_NUM_EVENTS 8
enum _spss_event_id {
/* signaled from user */
SPSS_EVENT_ID_PIL_CALLED = 0,
SPSS_EVENT_ID_NVM_READY = 1,
SPSS_EVENT_ID_SPU_READY = 2,
SPSS_NUM_USER_EVENTS,
#define EVENT_STATUS_SIGNALED 0xAAAA
#define EVENT_STATUS_TIMEOUT 0xEEE1
#define EVENT_STATUS_ABORTED 0xEEE2
/* signaled from kernel */
SPSS_EVENT_ID_SPU_POWER_DOWN = 6,
SPSS_EVENT_ID_SPU_POWER_UP = 7,
SPSS_NUM_EVENTS,
} spss_event_id;
enum _spss_event_status {
EVENT_STATUS_SIGNALED = 0xAAAA,
EVENT_STATUS_NOT_SIGNALED = 0xFFFF,
EVENT_STATUS_TIMEOUT = 0xEEE1,
EVENT_STATUS_ABORTED = 0xEEE2,
} spss_event_status;
struct spss_ioc_wait_for_event {
uint32_t event_id; /* input */
@ -54,4 +69,13 @@ struct spss_ioc_signal_event {
#define SPSS_IOC_SIGNAL_EVENT \
_IOWR(SPSS_IOC_MAGIC, 3, struct spss_ioc_signal_event)
/* ---------- is event isgnaled ------------------------------ */
struct spss_ioc_is_signaled {
uint32_t event_id; /* input */
uint32_t status; /* output */
} __attribute__((packed));
#define SPSS_IOC_IS_EVENT_SIGNALED \
_IOWR(SPSS_IOC_MAGIC, 4, struct spss_ioc_is_signaled)
#endif /* _UAPI_SPSS_UTILS_H_ */