linux-kernel - [PATCH 19/83] hsa/radeon: Enable/Disable KFD interrupt module

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Date:	Fri, 11 Jul 2014 00:50:19 +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>,
	Oded Gabbay <oded.gabbay@....com>
Subject: [PATCH 19/83] hsa/radeon: Enable/Disable KFD interrupt module

This patch add calls to initialize and finalize the KFD interrupt
module.

The calls are done per device initialize/finalize inside the kgd-->kfd
interface.

Signed-off-by: Oded Gabbay <oded.gabbay@....com>
---
 drivers/gpu/hsa/radeon/cik_regs.h   |  1 +
 drivers/gpu/hsa/radeon/kfd_device.c | 10 ++++++++--
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/hsa/radeon/cik_regs.h b/drivers/gpu/hsa/radeon/cik_regs.h
index 9c3ce97..813cdc4 100644
--- a/drivers/gpu/hsa/radeon/cik_regs.h
+++ b/drivers/gpu/hsa/radeon/cik_regs.h
@@ -73,6 +73,7 @@
 #define CP_PQ_WPTR_POLL_CNTL				0xC20C
 #define	WPTR_POLL_EN					(1 << 31)
 
+#define CPC_INT_CNTL					0xC2D0
 #define CP_ME1_PIPE0_INT_CNTL				0xC214
 #define CP_ME1_PIPE1_INT_CNTL				0xC218
 #define CP_ME1_PIPE2_INT_CNTL				0xC21C
diff --git a/drivers/gpu/hsa/radeon/kfd_device.c b/drivers/gpu/hsa/radeon/kfd_device.c
index b2d2861..b627e57 100644
--- a/drivers/gpu/hsa/radeon/kfd_device.c
+++ b/drivers/gpu/hsa/radeon/kfd_device.c
@@ -127,6 +127,9 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
 
 	radeon_kfd_doorbell_init(kfd);
 
+	if (radeon_kfd_interrupt_init(kfd))
+		return false;
+
 	if (!device_iommu_pasid_init(kfd))
 		return false;
 
@@ -155,10 +158,13 @@ void kgd2kfd_device_exit(struct kfd_dev *kfd)
 
 	BUG_ON(err != 0);
 
-	if (kfd->init_complete) {
+	if (kfd->init_complete)
 		kfd->device_info->scheduler_class->stop(kfd->scheduler);
-		kfd->device_info->scheduler_class->destroy(kfd->scheduler);
 
+	radeon_kfd_interrupt_exit(kfd);
+
+	if (kfd->init_complete) {
+		kfd->device_info->scheduler_class->destroy(kfd->scheduler);
 		amd_iommu_free_device(kfd->pdev);
 	}
 
-- 
1.9.1

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