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Message-Id: <20201229213653.29749-7-ogabbay@kernel.org> Date: Tue, 29 Dec 2020 23:36:52 +0200 From: Oded Gabbay <ogabbay@...nel.org> To: linux-kernel@...r.kernel.org Cc: Alon Mizrahi <amizrahi@...ana.ai> Subject: [PATCH 7/8] habanalabs: return dram virtual address in info ioctl From: Alon Mizrahi <amizrahi@...ana.ai> 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: Alon Mizrahi <amizrahi@...ana.ai> Reviewed-by: Oded Gabbay <ogabbay@...nel.org> Signed-off-by: Oded Gabbay <ogabbay@...nel.org> --- drivers/misc/habanalabs/common/habanalabs_ioctl.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/misc/habanalabs/common/habanalabs_ioctl.c b/drivers/misc/habanalabs/common/habanalabs_ioctl.c index ed325de04e35..64a82c966836 100644 --- a/drivers/misc/habanalabs/common/habanalabs_ioctl.c +++ b/drivers/misc/habanalabs/common/habanalabs_ioctl.c @@ -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; -- 2.25.1
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