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Subject[PATCH 31/83] drm/radeon: extending kfd-kgd interface
Date
From: Evgeny Pinchuk <evgeny.pinchuk@amd.com>

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

Signed-off-by: Evgeny Pinchuk <evgeny.pinchuk@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@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


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