Commit 9402a336 authored by Alon Mizrahi's avatar Alon Mizrahi Committed by Oded Gabbay
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habanalabs: return dram virtual address in info ioctl 



When working with DRAM MMU, we should supply the userspace with the
virtual start address of the DRAM instead of the physical one. This
is because the physical one has no meaning for the user as he only
knows the virtual address range.

Signed-off-by: default avatarAlon Mizrahi <amizrahi@habana.ai>
Reviewed-by: default avatarOded Gabbay <ogabbay@kernel.org>
Signed-off-by: default avatarOded Gabbay <ogabbay@kernel.org>
parent 3abe1040

drivers/misc/habanalabs/common/habanalabs_ioctl.c

+3 −1
Original line number Diff line number Diff line
@@ -57,7 +57,9 @@ static int hw_ip_info(struct hl_device *hdev, struct hl_info_args *args) 


	hw_ip.device_id = hdev->asic_funcs->get_pci_id(hdev);

	hw_ip.sram_base_address = prop->sram_user_base_address;

	hw_ip.dram_base_address = prop->dram_user_base_address;

	hw_ip.dram_base_address =

			hdev->mmu_enable && prop->dram_supports_virtual_memory ?

			prop->dmmu.start_addr : prop->dram_user_base_address;

	hw_ip.tpc_enabled_mask = prop->tpc_enabled_mask;

	hw_ip.sram_size = prop->sram_size - sram_kmd_size;

	hw_ip.dram_size = prop->dram_size - dram_kmd_size;