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From ac90ce9d10da9ac655ebc2a159e3cd87ba297abb Mon Sep 17 00:00:00 2001
From: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Date: Wed, 14 Nov 2018 15:50:05 -0500
Subject: [PATCH 0866/2940] drm/amdgpu: Expose hive adev list and xgmi_mutex
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
It's needed for device reset of entire hive.
v3:
Add per hive lock to allow avoiding duplicate resets triggered by
multiple members of same hive.
Expose amdgpu_hive_info instead of adding getter functions.
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c | 16 ++++++++--------
drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h | 13 ++++++++-----
2 files changed, 16 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
index 59e667a8f01b..fb37e69f1bba 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
@@ -23,7 +23,6 @@
*/
#include <linux/list.h>
#include "amdgpu.h"
-#include "amdgpu_psp.h"
#include "amdgpu_xgmi.h"
@@ -32,16 +31,15 @@ static DEFINE_MUTEX(xgmi_mutex);
#define AMDGPU_MAX_XGMI_HIVE 8
#define AMDGPU_MAX_XGMI_DEVICE_PER_HIVE 4
-struct amdgpu_hive_info {
- uint64_t hive_id;
- struct list_head device_list;
- struct psp_xgmi_topology_info topology_info;
- int number_devices;
-};
-
static struct amdgpu_hive_info xgmi_hives[AMDGPU_MAX_XGMI_HIVE];
static unsigned hive_count = 0;
+
+void *amdgpu_xgmi_hive_try_lock(struct amdgpu_hive_info *hive)
+{
+ return &hive->device_list;
+}
+
struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev)
{
int i;
@@ -61,6 +59,8 @@ struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev)
tmp = &xgmi_hives[hive_count++];
tmp->hive_id = adev->gmc.xgmi.hive_id;
INIT_LIST_HEAD(&tmp->device_list);
+ mutex_init(&tmp->hive_lock);
+
return tmp;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h
index 85a7263f1f18..6335bfdcc51d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h
@@ -22,12 +22,15 @@
#ifndef __AMDGPU_XGMI_H__
#define __AMDGPU_XGMI_H__
-/*
- * functions used by amdgpu_xgmi.c
- */
+#include "amdgpu_psp.h"
-struct amdgpu_device;
-struct amdgpu_hive_info;
+struct amdgpu_hive_info {
+ uint64_t hive_id;
+ struct list_head device_list;
+ struct psp_xgmi_topology_info topology_info;
+ int number_devices;
+ struct mutex hive_lock;
+};
struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev);
int amdgpu_xgmi_update_topology(struct amdgpu_hive_info *hive, struct amdgpu_device *adev);
--
2.17.1
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