[PATCH 2/4] habanalabs: support fetching first available user CQ

Oded Gabbay
2021-02-02T17:11:59Z

From: Ofir Bitton <obitton@habana.ai>

User must be aware of the available CQs when it needs to use them.

Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
---
drivers/misc/habanalabs/common/habanalabs.h | 2 ++
drivers/misc/habanalabs/common/habanalabs_ioctl.c | 3 ++-
drivers/misc/habanalabs/gaudi/gaudi.c | 3 +++
drivers/misc/habanalabs/goya/goya.c | 3 +++
include/uapi/misc/habanalabs.h | 3 +++
5 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/misc/habanalabs/common/habanalabs.h b/drivers/misc/habanalabs/common/habanalabs.h
index 3c54010f7ab9..98163317ec43 100644
--- a/drivers/misc/habanalabs/common/habanalabs.h
+++ b/drivers/misc/habanalabs/common/habanalabs.h
@@ -411,6 +411,7 @@ struct hl_mmu_properties {
* @first_available_user_mon: first monitor available for the user
* @first_available_user_msix_interrupt: first available msix interrupt
* reserved for the user
+ * @first_available_cq: first available CQ for the user.
* @tpc_enabled_mask: which TPCs are enabled.
* @completion_queues_count: number of completion queues.
* @fw_security_disabled: true if security measures are disabled in firmware,
@@ -475,6 +476,7 @@ struct asic_fixed_properties {
u16 first_available_user_sob[HL_MAX_DCORES];
u16 first_available_user_mon[HL_MAX_DCORES];
u16 first_available_user_msix_interrupt;
+ u16 first_available_cq[HL_MAX_DCORES];
u8 tpc_enabled_mask;
u8 completion_queues_count;
u8 fw_security_disabled;
diff --git a/drivers/misc/habanalabs/common/habanalabs_ioctl.c b/drivers/misc/habanalabs/common/habanalabs_ioctl.c
index e86f46d4b613..03af61cecd37 100644
--- a/drivers/misc/habanalabs/common/habanalabs_ioctl.c
+++ b/drivers/misc/habanalabs/common/habanalabs_ioctl.c
@@ -397,7 +397,8 @@ static int sync_manager_info(struct hl_fpriv *hpriv, struct hl_info_args *args)
prop->first_available_user_sob[args->dcore_id];
sm_info.first_available_monitor =
prop->first_available_user_mon[args->dcore_id];
-
+ sm_info.first_available_cq =
+ prop->first_available_cq[args->dcore_id];

return copy_to_user(out, &sm_info, min_t(size_t, (size_t) max_size,
sizeof(sm_info))) ? -EFAULT : 0;
diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c
index 006c34ae35c2..8fc0de3cf3a9 100644
--- a/drivers/misc/habanalabs/gaudi/gaudi.c
+++ b/drivers/misc/habanalabs/gaudi/gaudi.c
@@ -529,6 +529,9 @@ static int gaudi_get_fixed_properties(struct hl_device *hdev)

prop->first_available_user_msix_interrupt = USHRT_MAX;

+ for (i = 0 ; i < HL_MAX_DCORES ; i++)
+ prop->first_available_cq[i] = USHRT_MAX;
+
/* disable fw security for now, set it in a later stage */
prop->fw_security_disabled = true;
prop->fw_security_status_valid = false;
diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c
index 53db7e966866..d26b405f0c17 100644
--- a/drivers/misc/habanalabs/goya/goya.c
+++ b/drivers/misc/habanalabs/goya/goya.c
@@ -457,6 +457,9 @@ int goya_get_fixed_properties(struct hl_device *hdev)

prop->first_available_user_msix_interrupt = USHRT_MAX;

+ for (i = 0 ; i < HL_MAX_DCORES ; i++)
+ prop->first_available_cq[i] = USHRT_MAX;
+
/* disable fw security for now, set it in a later stage */
prop->fw_security_disabled = true;
prop->fw_security_status_valid = false;
diff --git a/include/uapi/misc/habanalabs.h b/include/uapi/misc/habanalabs.h
index ebde42b37b43..64ae83b5f8e5 100644
--- a/include/uapi/misc/habanalabs.h
+++ b/include/uapi/misc/habanalabs.h
@@ -414,10 +414,13 @@ struct hl_pll_frequency_info {
* struct hl_info_sync_manager - sync manager information
* @first_available_sync_object: first available sob
* @first_available_monitor: first available monitor
+ * @first_available_cq: first available cq
*/
struct hl_info_sync_manager {
__u32 first_available_sync_object;
__u32 first_available_monitor;
+ __u32 first_available_cq;
+ __u32 reserved;
};

/**
--
2.25.1