diff options
| author | Ofir Bitton <obitton@habana.ai> | 2021-01-12 18:37:19 +0200 |
|---|---|---|
| committer | Oded Gabbay <ogabbay@kernel.org> | 2021-04-09 14:09:23 +0300 |
| commit | ab5f5c3089a2c9b863ad0b67e89f168ec7e8f7e5 (patch) | |
| tree | 6c5174d70813d68077b4327a0c0b7e9f071be3fb /include/uapi/misc | |
| parent | 2d44c6f6b3a10c1d82d667b92a39621c3753b229 (diff) | |
| download | linux-ab5f5c3089a2c9b863ad0b67e89f168ec7e8f7e5.tar.bz2 | |
habanalabs: wait for interrupt support
In order to support command submissions from user space, the driver
need to add support for user interrupt completions. The driver will
allow multiple user threads to wait for an interrupt and perform
a comparison with a given user address once interrupt expires.
Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Diffstat (limited to 'include/uapi/misc')
| -rw-r--r-- | include/uapi/misc/habanalabs.h | 42 |
1 files changed, 37 insertions, 5 deletions
diff --git a/include/uapi/misc/habanalabs.h b/include/uapi/misc/habanalabs.h index 5a86b521a450..05c7cf4e727e 100644 --- a/include/uapi/misc/habanalabs.h +++ b/include/uapi/misc/habanalabs.h @@ -682,14 +682,46 @@ union hl_cs_args { struct hl_cs_out out; }; +#define HL_WAIT_CS_FLAGS_INTERRUPT 0x2 +#define HL_WAIT_CS_FLAGS_INTERRUPT_MASK 0xFFF00000 + struct hl_wait_cs_in { - /* Command submission sequence number */ - __u64 seq; - /* Absolute timeout to wait in microseconds */ - __u64 timeout_us; + union { + struct { + /* Command submission sequence number */ + __u64 seq; + /* Absolute timeout to wait for command submission + * in microseconds + */ + __u64 timeout_us; + }; + + struct { + /* User address for completion comparison. + * upon interrupt, driver will compare the value pointed + * by this address with the supplied target value. + * in order not to perform any comparison, set address + * to all 1s. + * Relevant only when HL_WAIT_CS_FLAGS_INTERRUPT is set + */ + __u64 addr; + /* Target value for completion comparison */ + __u32 target; + /* Absolute timeout to wait for interrupt + * in microseconds + */ + __u32 interrupt_timeout_us; + }; + }; + /* Context ID - Currently not in use */ __u32 ctx_id; - __u32 pad; + /* HL_WAIT_CS_FLAGS_* + * If HL_WAIT_CS_FLAGS_INTERRUPT is set, this field should include + * interrupt id according to HL_WAIT_CS_FLAGS_INTERRUPT_MASK, in order + * not to specify an interrupt id ,set mask to all 1s. + */ + __u32 flags; }; #define HL_WAIT_CS_STATUS_COMPLETED 0 |