Commit 76e1ff37 authored Mar 13, 2023 by Ofir Bitton Committed by Oded Gabbay Mar 20, 2023

accel/habanalabs: expose dram reserved size by kmd



We expose this in order for user applications to know how much dram
is reserved for internal use.

Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

parent 0e418ab7

drivers/accel/habanalabs/common/habanalabs_ioctl.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -109,6 +109,7 @@ static int hw_ip_info(struct hl_device hdev, struct hl_info_args args)
		hw_ip.security_enabled = prop->fw_security_enabled;
		hw_ip.revision_id = hdev->pdev->revision;
		hw_ip.engine_core_interrupt_reg_addr = prop->engine_core_interrupt_reg_addr;
		hw_ip.reserved_dram_size = dram_kmd_size;

		return copy_to_user(out, &hw_ip,
		min((size_t) size, sizeof(hw_ip))) ? -EFAULT : 0;

include/uapi/drm/habanalabs_accel.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -888,6 +888,7 @@ enum hl_server_type {
		* @tpc_interrupt_id: interrupt id for TPC to use in order to raise events towards the host.
		* @engine_core_interrupt_reg_addr: interrupt register address for engine core to use
		* in order to raise events toward FW.
		* @reserved_dram_size: DRAM size reserved for driver and firmware.
		*/
		struct hl_info_hw_ip_info {
		__u64 sram_base_address;
		@@ -928,6 +929,7 @@ struct hl_info_hw_ip_info {
		__u32 reserved8;
		__u32 reserved9;
		__u64 engine_core_interrupt_reg_addr;
		__u64 reserved_dram_size;
		};

		struct hl_info_dram_usage {