[PATCH 05/83] drm/radeon: Add kfd-->kgd interface to get virtual ram size

[Oded Gabbay <oded.gabbay@gmail.com>]

This patch adds a new interface to kfd2kgd_calls structure so that
the kfd driver could get the virtual ram size of a specific
radeon device.

Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
---
 drivers/gpu/drm/radeon/radeon_kfd.c | 12 ++++++++++++
 include/linux/radeon_kfd.h          |  1 +
 2 files changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/radeon/radeon_kfd.c b/drivers/gpu/drm/radeon/radeon_kfd.c
index 7c7f808..1b859b5 100644
--- a/drivers/gpu/drm/radeon/radeon_kfd.c
+++ b/drivers/gpu/drm/radeon/radeon_kfd.c
@@ -25,7 +25,10 @@
 #include <drm/drmP.h>
 #include "radeon.h"
 
+static uint64_t get_vmem_size(struct kgd_dev *kgd);
+
 static const struct kfd2kgd_calls kfd2kgd = {
+	.get_vmem_size = get_vmem_size,
 };
 
 static const struct kgd2kfd_calls *kgd2kfd;
@@ -92,3 +95,12 @@ void radeon_kfd_device_fini(struct radeon_device *rdev)
 		rdev->kfd = NULL;
 	}
 }
+
+static uint64_t get_vmem_size(struct kgd_dev *kgd)
+{
+	struct radeon_device *rdev = (struct radeon_device *)kgd;
+
+	BUG_ON(kgd == NULL);
+
+	return rdev->mc.real_vram_size;
+}
diff --git a/include/linux/radeon_kfd.h b/include/linux/radeon_kfd.h
index 59785e9..28cddf5 100644
--- a/include/linux/radeon_kfd.h
+++ b/include/linux/radeon_kfd.h
@@ -57,6 +57,7 @@ struct kgd2kfd_calls {
 };
 
 struct kfd2kgd_calls {
+	uint64_t (*get_vmem_size)(struct kgd_dev *kgd);
 };
 
 bool kgd2kfd_init(unsigned interface_version,
-- 
1.9.1