linux-kernel - [PATCH 39/83] drm/radeon: Extending kfd interface

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Date:	Fri, 11 Jul 2014 00:53:55 +0300
From:	Oded Gabbay <oded.gabbay@...il.com>
To:	David Airlie <airlied@...ux.ie>,
	Alex Deucher <alexander.deucher@....com>,
	Jerome Glisse <j.glisse@...il.com>
Cc:	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	John Bridgman <John.Bridgman@....com>,
	Andrew Lewycky <Andrew.Lewycky@....com>,
	Joerg Roedel <joro@...tes.org>,
	Evgeny Pinchuk <evgeny.pinchuk@....com>,
	Oded Gabbay <oded.gabbay@....com>,
	Christian König <christian.koenig@....com>
Subject: [PATCH 39/83] drm/radeon: Extending kfd interface

From: Evgeny Pinchuk <evgeny.pinchuk@....com>

Adding new function to the interface used by kfd.
The new function retrieves the max engine clock speed.

Signed-off-by: Evgeny Pinchuk <evgeny.pinchuk@....com>
Signed-off-by: Oded Gabbay <oded.gabbay@....com>
---
 drivers/gpu/drm/radeon/radeon_kfd.c | 11 +++++++++++
 include/linux/radeon_kfd.h          |  2 ++
 2 files changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/radeon/radeon_kfd.c b/drivers/gpu/drm/radeon/radeon_kfd.c
index 6dba170..8b6d497 100644
--- a/drivers/gpu/drm/radeon/radeon_kfd.c
+++ b/drivers/gpu/drm/radeon/radeon_kfd.c
@@ -50,6 +50,8 @@ static void unlock_srbm_gfx_cntl(struct kgd_dev *kgd);
 static void lock_grbm_gfx_idx(struct kgd_dev *kgd);
 static void unlock_grbm_gfx_idx(struct kgd_dev *kgd);
 
+static uint32_t get_max_engine_clock_in_mhz(struct kgd_dev *kgd);
+
 
 static const struct kfd2kgd_calls kfd2kgd = {
 	.allocate_mem = allocate_mem,
@@ -64,6 +66,7 @@ static const struct kfd2kgd_calls kfd2kgd = {
 	.unlock_srbm_gfx_cntl = unlock_srbm_gfx_cntl,
 	.lock_grbm_gfx_idx = lock_grbm_gfx_idx,
 	.unlock_grbm_gfx_idx = unlock_grbm_gfx_idx,
+	.get_max_engine_clock_in_mhz = get_max_engine_clock_in_mhz,
 };
 
 static const struct kgd2kfd_calls *kgd2kfd;
@@ -307,3 +310,11 @@ static uint64_t get_gpu_clock_counter(struct kgd_dev *kgd)
 
 	return rdev->asic->get_gpu_clock_counter(rdev);
 }
+
+static uint32_t get_max_engine_clock_in_mhz(struct kgd_dev *kgd)
+{
+	struct radeon_device *rdev = (struct radeon_device *)kgd;
+
+	/* The sclk is in quantas of 10kHz */
+	return rdev->pm.power_state->clock_info->sclk / 100;
+}
diff --git a/include/linux/radeon_kfd.h b/include/linux/radeon_kfd.h
index 4c7e923..4114c8e 100644
--- a/include/linux/radeon_kfd.h
+++ b/include/linux/radeon_kfd.h
@@ -93,6 +93,8 @@ struct kfd2kgd_calls {
 	/* GRBM_GFX_INDEX mutex */
 	void (*lock_grbm_gfx_idx)(struct kgd_dev *kgd);
 	void (*unlock_grbm_gfx_idx)(struct kgd_dev *kgd);
+
+	uint32_t (*get_max_engine_clock_in_mhz)(struct kgd_dev *kgd);
 };
 
 bool kgd2kfd_init(unsigned interface_version,
-- 
1.9.1

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