From: Ofir Bitton <[email protected]> In case MMU is enabled, we must take MMU page size into consideration when reporting dram size to the user. This is because the MMU page size can be a value which is NOT a power-of-2 value. As a result, the total DRAM size (which is always a power-of-2 value) needed to be rounded-down.
Signed-off-by: Ofir Bitton <[email protected]> Reviewed-by: Oded Gabbay <[email protected]> Signed-off-by: Oded Gabbay <[email protected]> --- drivers/misc/habanalabs/common/habanalabs_ioctl.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/misc/habanalabs/common/habanalabs_ioctl.c b/drivers/misc/habanalabs/common/habanalabs_ioctl.c index 64a82c966836..b83ee32ae569 100644 --- a/drivers/misc/habanalabs/common/habanalabs_ioctl.c +++ b/drivers/misc/habanalabs/common/habanalabs_ioctl.c @@ -62,7 +62,13 @@ static int hw_ip_info(struct hl_device *hdev, struct hl_info_args *args) 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; + + if (hdev->mmu_enable) + hw_ip.dram_size = rounddown(prop->dram_size - dram_kmd_size, + prop->dram_page_size); + else + hw_ip.dram_size = prop->dram_size - dram_kmd_size; + if (hw_ip.dram_size > PAGE_SIZE) hw_ip.dram_enabled = 1; hw_ip.dram_page_size = prop->dram_page_size; -- 2.25.1
