[AMD Official Use Only - General]
<ping>
Thanks,
Lijo
-----Original Message-----
From: amd-gfx <amd-gfx-boun...@lists.freedesktop.org> On Behalf Of Lijo Lazar
Sent: Thursday, August 10, 2023 5:14 PM
To: amd-gfx@lists.freedesktop.org
Cc: Deucher, Alexander <alexander.deuc...@amd.com>; Kamal, Asad
<asad.ka...@amd.com>; Zhang, Hawking <hawking.zh...@amd.com>
Subject: [PATCH] drm/amdgpu: Keep reset handlers shared
Instead of maintaining a list per device, keep the reset handlers common per
ASIC family. A pointer to the list of handlers is maintained in reset control.
Signed-off-by: Lijo Lazar <lijo.la...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/aldebaran.c | 19 +++++++++++--------
drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c | 8 --------
drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h | 16 ++++++++++++----
drivers/gpu/drm/amd/amdgpu/sienna_cichlid.c | 20 +++++++++++---------
drivers/gpu/drm/amd/amdgpu/smu_v13_0_10.c | 19 +++++++++++--------
5 files changed, 45 insertions(+), 37 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/aldebaran.c
b/drivers/gpu/drm/amd/amdgpu/aldebaran.c
index 2b97b8a96fb4..82e1c83a7ccc 100644
--- a/drivers/gpu/drm/amd/amdgpu/aldebaran.c
+++ b/drivers/gpu/drm/amd/amdgpu/aldebaran.c
@@ -48,20 +48,19 @@ aldebaran_get_reset_handler(struct amdgpu_reset_control
*reset_ctl, {
struct amdgpu_reset_handler *handler;
struct amdgpu_device *adev = (struct amdgpu_device *)reset_ctl->handle;
+ int i;
if (reset_context->method != AMD_RESET_METHOD_NONE) {
dev_dbg(adev->dev, "Getting reset handler for method %d\n",
reset_context->method);
- list_for_each_entry(handler, &reset_ctl->reset_handlers,
- handler_list) {
+ for_each_handler(i, handler, reset_ctl) {
if (handler->reset_method == reset_context->method)
return handler;
}
}
if (aldebaran_is_mode2_default(reset_ctl)) {
- list_for_each_entry(handler, &reset_ctl->reset_handlers,
- handler_list) {
+ for_each_handler(i, handler, reset_ctl) {
if (handler->reset_method == AMD_RESET_METHOD_MODE2) {
reset_context->method = AMD_RESET_METHOD_MODE2;
return handler;
@@ -124,9 +123,9 @@ static void aldebaran_async_reset(struct work_struct *work)
struct amdgpu_reset_control *reset_ctl =
container_of(work, struct amdgpu_reset_control, reset_work);
struct amdgpu_device *adev = (struct amdgpu_device *)reset_ctl->handle;
+ int i;
- list_for_each_entry(handler, &reset_ctl->reset_handlers,
- handler_list) {
+ for_each_handler(i, handler, reset_ctl) {
if (handler->reset_method == reset_ctl->active_reset) {
dev_dbg(adev->dev, "Resetting device\n");
handler->do_reset(adev);
@@ -395,6 +394,11 @@ static struct amdgpu_reset_handler aldebaran_mode2_handler
= {
.do_reset = aldebaran_mode2_reset,
};
+static struct amdgpu_reset_handler
+ *aldebaran_rst_handlers[AMDGPU_RESET_MAX_HANDLERS] = {
+ &aldebaran_mode2_handler,
+ };
+
int aldebaran_reset_init(struct amdgpu_device *adev) {
struct amdgpu_reset_control *reset_ctl; @@ -408,10 +412,9 @@ int
aldebaran_reset_init(struct amdgpu_device *adev)
reset_ctl->active_reset = AMD_RESET_METHOD_NONE;
reset_ctl->get_reset_handler = aldebaran_get_reset_handler;
- INIT_LIST_HEAD(&reset_ctl->reset_handlers);
INIT_WORK(&reset_ctl->reset_work, reset_ctl->async_reset);
/* Only mode2 is handled through reset control now */
- amdgpu_reset_add_handler(reset_ctl, &aldebaran_mode2_handler);
+ reset_ctl->reset_handlers = &aldebaran_rst_handlers;
adev->reset_cntl = reset_ctl;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
index 5fed06ffcc6b..02d874799c16 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
@@ -26,14 +26,6 @@
#include "sienna_cichlid.h"
#include "smu_v13_0_10.h"
-int amdgpu_reset_add_handler(struct amdgpu_reset_control *reset_ctl,
- struct amdgpu_reset_handler *handler)
-{
- /* TODO: Check if handler exists? */
- list_add_tail(&handler->handler_list, &reset_ctl->reset_handlers);
- return 0;
-}
-
int amdgpu_reset_init(struct amdgpu_device *adev) {
int ret = 0;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h
b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h
index f4a501ff87d9..471d789b33a5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h
@@ -26,6 +26,8 @@
#include "amdgpu.h"
+#define AMDGPU_RESET_MAX_HANDLERS 5
+
enum AMDGPU_RESET_FLAGS {
AMDGPU_NEED_FULL_RESET = 0,
@@ -44,7 +46,6 @@ struct amdgpu_reset_context {
struct amdgpu_reset_handler {
enum amd_reset_method reset_method;
- struct list_head handler_list;
int (*prepare_env)(struct amdgpu_reset_control *reset_ctl,
struct amdgpu_reset_context *context);
int (*prepare_hwcontext)(struct amdgpu_reset_control *reset_ctl, @@
-63,7 +64,8 @@ struct amdgpu_reset_control {
void *handle;
struct work_struct reset_work;
struct mutex reset_lock;
- struct list_head reset_handlers;
+ struct amdgpu_reset_handler *(
+ *reset_handlers)[AMDGPU_RESET_MAX_HANDLERS];
atomic_t in_reset;
enum amd_reset_method active_reset;
struct amdgpu_reset_handler *(*get_reset_handler)( @@ -97,8 +99,10 @@
int amdgpu_reset_prepare_hwcontext(struct amdgpu_device *adev, int
amdgpu_reset_perform_reset(struct amdgpu_device *adev,
struct amdgpu_reset_context *reset_context);
-int amdgpu_reset_add_handler(struct amdgpu_reset_control *reset_ctl,
- struct amdgpu_reset_handler *handler);
+int amdgpu_reset_prepare_env(struct amdgpu_device *adev,
+ struct amdgpu_reset_context *reset_context); int
+amdgpu_reset_restore_env(struct amdgpu_device *adev,
+ struct amdgpu_reset_context *reset_context);
struct amdgpu_reset_domain *amdgpu_reset_create_reset_domain(enum
amdgpu_reset_domain_type type,
char *wq_name);
@@ -126,4 +130,8 @@ void amdgpu_device_lock_reset_domain(struct
amdgpu_reset_domain *reset_domain);
void amdgpu_device_unlock_reset_domain(struct amdgpu_reset_domain
*reset_domain);
+#define for_each_handler(i, handler, reset_ctl) \
+ for (i = 0; (i < AMDGPU_RESET_MAX_HANDLERS) && \
+ (handler = (*reset_ctl->reset_handlers)[i]); \
+ ++i)
#endif
diff --git a/drivers/gpu/drm/amd/amdgpu/sienna_cichlid.c
b/drivers/gpu/drm/amd/amdgpu/sienna_cichlid.c
index 8b8086d5c864..07ded70f4df9 100644
--- a/drivers/gpu/drm/amd/amdgpu/sienna_cichlid.c
+++ b/drivers/gpu/drm/amd/amdgpu/sienna_cichlid.c
@@ -48,18 +48,17 @@ sienna_cichlid_get_reset_handler(struct
amdgpu_reset_control *reset_ctl,
struct amdgpu_reset_context *reset_context) {
struct amdgpu_reset_handler *handler;
+ int i;
if (reset_context->method != AMD_RESET_METHOD_NONE) {
- list_for_each_entry(handler, &reset_ctl->reset_handlers,
- handler_list) {
+ for_each_handler(i, handler, reset_ctl) {
if (handler->reset_method == reset_context->method)
return handler;
}
}
if (sienna_cichlid_is_mode2_default(reset_ctl)) {
- list_for_each_entry (handler, &reset_ctl->reset_handlers,
- handler_list) {
+ for_each_handler(i, handler, reset_ctl) {
if (handler->reset_method == AMD_RESET_METHOD_MODE2)
return handler;
}
@@ -120,9 +119,9 @@ static void sienna_cichlid_async_reset(struct work_struct
*work)
struct amdgpu_reset_control *reset_ctl =
container_of(work, struct amdgpu_reset_control, reset_work);
struct amdgpu_device *adev = (struct amdgpu_device *)reset_ctl->handle;
+ int i;
- list_for_each_entry(handler, &reset_ctl->reset_handlers,
- handler_list) {
+ for_each_handler(i, handler, reset_ctl) {
if (handler->reset_method == reset_ctl->active_reset) {
dev_dbg(adev->dev, "Resetting device\n");
handler->do_reset(adev);
@@ -281,6 +280,11 @@ static struct amdgpu_reset_handler
sienna_cichlid_mode2_handler = {
.do_reset = sienna_cichlid_mode2_reset,
};
+static struct amdgpu_reset_handler
+ *sienna_cichlid_rst_handlers[AMDGPU_RESET_MAX_HANDLERS] = {
+ &sienna_cichlid_mode2_handler,
+ };
+
int sienna_cichlid_reset_init(struct amdgpu_device *adev) {
struct amdgpu_reset_control *reset_ctl; @@ -294,11 +298,9 @@ int
sienna_cichlid_reset_init(struct amdgpu_device *adev)
reset_ctl->active_reset = AMD_RESET_METHOD_NONE;
reset_ctl->get_reset_handler = sienna_cichlid_get_reset_handler;
- INIT_LIST_HEAD(&reset_ctl->reset_handlers);
INIT_WORK(&reset_ctl->reset_work, reset_ctl->async_reset);
/* Only mode2 is handled through reset control now */
- amdgpu_reset_add_handler(reset_ctl, &sienna_cichlid_mode2_handler);
-
+ reset_ctl->reset_handlers = &sienna_cichlid_rst_handlers;
adev->reset_cntl = reset_ctl;
return 0;
diff --git a/drivers/gpu/drm/amd/amdgpu/smu_v13_0_10.c
b/drivers/gpu/drm/amd/amdgpu/smu_v13_0_10.c
index ae29620b1ea4..04c797d54511 100644
--- a/drivers/gpu/drm/amd/amdgpu/smu_v13_0_10.c
+++ b/drivers/gpu/drm/amd/amdgpu/smu_v13_0_10.c
@@ -44,10 +44,10 @@ smu_v13_0_10_get_reset_handler(struct amdgpu_reset_control
*reset_ctl, {
struct amdgpu_reset_handler *handler;
struct amdgpu_device *adev = (struct amdgpu_device *)reset_ctl->handle;
+ int i;
if (reset_context->method != AMD_RESET_METHOD_NONE) {
- list_for_each_entry(handler, &reset_ctl->reset_handlers,
- handler_list) {
+ for_each_handler(i, handler, reset_ctl) {
if (handler->reset_method == reset_context->method)
return handler;
}
@@ -55,8 +55,7 @@ smu_v13_0_10_get_reset_handler(struct amdgpu_reset_control
*reset_ctl,
if (smu_v13_0_10_is_mode2_default(reset_ctl) &&
amdgpu_asic_reset_method(adev) == AMD_RESET_METHOD_MODE2) {
- list_for_each_entry (handler, &reset_ctl->reset_handlers,
- handler_list) {
+ for_each_handler(i, handler, reset_ctl) {
if (handler->reset_method == AMD_RESET_METHOD_MODE2)
return handler;
}
@@ -119,9 +118,9 @@ static void smu_v13_0_10_async_reset(struct work_struct
*work)
struct amdgpu_reset_control *reset_ctl =
container_of(work, struct amdgpu_reset_control, reset_work);
struct amdgpu_device *adev = (struct amdgpu_device *)reset_ctl->handle;
+ int i;
- list_for_each_entry(handler, &reset_ctl->reset_handlers,
- handler_list) {
+ for_each_handler(i, handler, reset_ctl) {
if (handler->reset_method == reset_ctl->active_reset) {
dev_dbg(adev->dev, "Resetting device\n");
handler->do_reset(adev);
@@ -272,6 +271,11 @@ static struct amdgpu_reset_handler
smu_v13_0_10_mode2_handler = {
.do_reset = smu_v13_0_10_mode2_reset,
};
+static struct amdgpu_reset_handler
+ *smu_v13_0_10_rst_handlers[AMDGPU_RESET_MAX_HANDLERS] = {
+ &smu_v13_0_10_mode2_handler,
+ };
+
int smu_v13_0_10_reset_init(struct amdgpu_device *adev) {
struct amdgpu_reset_control *reset_ctl; @@ -285,10 +289,9 @@ int
smu_v13_0_10_reset_init(struct amdgpu_device *adev)
reset_ctl->active_reset = AMD_RESET_METHOD_NONE;
reset_ctl->get_reset_handler = smu_v13_0_10_get_reset_handler;
- INIT_LIST_HEAD(&reset_ctl->reset_handlers);
INIT_WORK(&reset_ctl->reset_work, reset_ctl->async_reset);
/* Only mode2 is handled through reset control now */
- amdgpu_reset_add_handler(reset_ctl, &smu_v13_0_10_mode2_handler);
+ reset_ctl->reset_handlers = &smu_v13_0_10_rst_handlers;
adev->reset_cntl = reset_ctl;
--
2.25.1
