[PATCH 31/83] drm/radeon: extending kfd-kgd interface

[Oded Gabbay]

From: Evgeny Pinchuk <evgeny.pinchuk at amd.com>

Adding API for KFD to be able to query the GPU clock counter.

Signed-off-by: Evgeny Pinchuk <evgeny.pinchuk at amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay at amd.com>
---
 drivers/gpu/drm/radeon/radeon_kfd.c | 9 +++++++++
 include/linux/radeon_kfd.h          | 1 +
 2 files changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/radeon/radeon_kfd.c b/drivers/gpu/drm/radeon/radeon_kfd.c
index f4cc3c5..121e67b 100644
--- a/drivers/gpu/drm/radeon/radeon_kfd.c
+++ b/drivers/gpu/drm/radeon/radeon_kfd.c
@@ -42,6 +42,7 @@ static int kmap_mem(struct kgd_dev *kgd, struct kgd_mem *mem, void **ptr);
 static void unkmap_mem(struct kgd_dev *kgd, struct kgd_mem *mem);
 
 static uint64_t get_vmem_size(struct kgd_dev *kgd);
+static uint64_t get_gpu_clock_counter(struct kgd_dev *kgd);
 
 static void lock_srbm_gfx_cntl(struct kgd_dev *kgd);
 static void unlock_srbm_gfx_cntl(struct kgd_dev *kgd);
@@ -55,6 +56,7 @@ static const struct kfd2kgd_calls kfd2kgd = {
 	.kmap_mem = kmap_mem,
 	.unkmap_mem = unkmap_mem,
 	.get_vmem_size = get_vmem_size,
+	.get_gpu_clock_counter = get_gpu_clock_counter,
 	.lock_srbm_gfx_cntl = lock_srbm_gfx_cntl,
 	.unlock_srbm_gfx_cntl = unlock_srbm_gfx_cntl,
 };
@@ -275,3 +277,10 @@ static void unlock_srbm_gfx_cntl(struct kgd_dev *kgd)
 
 	mutex_unlock(&rdev->srbm_mutex);
 }
+
+static uint64_t get_gpu_clock_counter(struct kgd_dev *kgd)
+{
+	struct radeon_device *rdev = (struct radeon_device *)kgd;
+
+	return rdev->asic->get_gpu_clock_counter(rdev);
+}
diff --git a/include/linux/radeon_kfd.h b/include/linux/radeon_kfd.h
index 63b7bac..fcb6c7a 100644
--- a/include/linux/radeon_kfd.h
+++ b/include/linux/radeon_kfd.h
@@ -84,6 +84,7 @@ struct kfd2kgd_calls {
 	void (*unkmap_mem)(struct kgd_dev *kgd, struct kgd_mem *mem);
 
 	uint64_t (*get_vmem_size)(struct kgd_dev *kgd);
+	uint64_t (*get_gpu_clock_counter)(struct kgd_dev *kgd);
 
 	/* SRBM_GFX_CNTL mutex */
 	void (*lock_srbm_gfx_cntl)(struct kgd_dev *kgd);
-- 
1.9.1