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authorOhad Sharabi <osharabi@habana.ai>2022-02-23 11:47:05 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2022-05-22 20:57:33 +0200
commit1359fcbe0f4aa2cd6ea684727a5a111eebeeed3a (patch)
tree97b0317d09838e6b3a42fa1c0681326a605440be
parent378b02dc017777e1dea304b472f2e2db836b6706 (diff)
downloadlinux-1359fcbe0f4aa2cd6ea684727a5a111eebeeed3a.tar.bz2
habanalabs: add DRAM default page size to HW info
When using the device memory allocation API the user ought to know what is the default allocation page size. Signed-off-by: Ohad Sharabi <osharabi@habana.ai> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/misc/habanalabs/common/habanalabs_ioctl.c1
-rw-r--r--include/uapi/misc/habanalabs.h3
2 files changed, 4 insertions, 0 deletions
diff --git a/drivers/misc/habanalabs/common/habanalabs_ioctl.c b/drivers/misc/habanalabs/common/habanalabs_ioctl.c
index c13a3c2a7013..14c58579b9cd 100644
--- a/drivers/misc/habanalabs/common/habanalabs_ioctl.c
+++ b/drivers/misc/habanalabs/common/habanalabs_ioctl.c
@@ -76,6 +76,7 @@ static int hw_ip_info(struct hl_device *hdev, struct hl_info_args *args)
if (hw_ip.dram_size > PAGE_SIZE)
hw_ip.dram_enabled = 1;
hw_ip.dram_page_size = prop->dram_page_size;
+ hw_ip.device_mem_alloc_default_page_size = prop->device_mem_alloc_default_page_size;
hw_ip.num_of_events = prop->num_of_events;
memcpy(hw_ip.cpucp_version, prop->cpucp_info.cpucp_version,
diff --git a/include/uapi/misc/habanalabs.h b/include/uapi/misc/habanalabs.h
index 1d6b4f0c4159..ae2441521467 100644
--- a/include/uapi/misc/habanalabs.h
+++ b/include/uapi/misc/habanalabs.h
@@ -409,6 +409,7 @@ enum hl_server_type {
* @dram_page_size: The DRAM physical page size.
* @number_of_user_interrupts: The number of interrupts that are available to the userspace
* application to use. Relevant for Gaudi2 and later.
+ * @device_mem_alloc_default_page_size: default page size used in device memory allocation.
*/
struct hl_info_hw_ip_info {
__u64 sram_base_address;
@@ -436,6 +437,8 @@ struct hl_info_hw_ip_info {
__u32 reserved3;
__u16 number_of_user_interrupts;
__u16 pad2;
+ __u64 reserved4;
+ __u64 device_mem_alloc_default_page_size;
};
struct hl_info_dram_usage {