samsung-sm8650/android_kernel_samsung_sm8650-modules
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

disp: msm: sde: add client pre_release/post_acquire handles for VM layers

Browse Source 
client_pre_release/client_post_acquire hooks in vm_ops allows non-SDE
clients to register for callbacks to be invoked
 - before releasing the resources from the current VM so that
   the client can updates the respective sw state to indicate
   the absence of HW ownership
 - before the first frame push after acquiring the HW to update
   reset the respective sw state to indicate the presence of
   HW ownership and resume operations

Change-Id: I93e5a2b43c79b4e7cc28e6e0129d8091aa0e508d
Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
This commit is contained in:
Jeykumar Sankaran
2020-05-22 12:50:42 -07:00
parent 720f9d0014
commit c249858e2b
5 changed files with 112 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
msm/sde/sde_vm.h
View File

@@ -119,6 +119,26 @@ struct sde_vm_ops {
* @ops - primary VM specific ops functions
*/
void (*vm_deinit)(struct sde_kms *kms, struct sde_vm_ops *ops);
/**
* vm_check - hook to check with vm_clients for its readiness to release
the HW reasources
*/
int (*vm_check)(void);
/**
* vm_client_pre_release - hook to invoke vm_client list for pre_release
handling
* @kms - handle to sde_kms
*/
int (*vm_client_pre_release)(struct sde_kms *kms);
/**
* vm_client_post_acquire - hook to invoke vm_client list for
* post_acquire resource handling
* @kms - handle to sde_kms
*/
int (*vm_client_post_acquire)(struct sde_kms *kms);
};
/**

76
msm/sde/sde_vm_common.c
View File

@@ -211,3 +211,79 @@ void sde_vm_free_resources(struct msm_io_res *io_res)
msm_dss_clean_io_mem(&io_res->mem);
msm_dss_clean_io_irq(&io_res->irq);
}
int sde_vm_post_acquire(struct sde_kms *kms)
{
struct msm_drm_private *priv = kms->dev->dev_private;
struct msm_vm_client_entry *entry;
int rc = 0;
list_for_each_entry(entry, &priv->vm_client_list, list) {
if (!entry->ops.vm_post_hw_acquire)
continue;
rc = entry->ops.vm_post_hw_acquire(entry->data);
if (rc) {
SDE_ERROR("post_acquire failed for device: %d\n",
entry->dev->id);
goto post_acquire_rollback;
}
}
return rc;
post_acquire_rollback:
list_for_each_entry_continue_reverse(entry, &priv->vm_client_list,
list) {
if (!entry->ops.vm_pre_hw_release)
continue;
rc = entry->ops.vm_pre_hw_release(entry->data);
if (rc) {
SDE_ERROR(
"post_acquire failed during rollback for device: %d\n",
entry->dev->id);
break;
}
}
return rc;
}
int sde_vm_pre_release(struct sde_kms *kms)
{
struct msm_drm_private *priv = kms->dev->dev_private;
struct msm_vm_client_entry *entry;
int rc = 0;
list_for_each_entry(entry, &priv->vm_client_list, list) {
if (!entry->ops.vm_pre_hw_release)
continue;
rc = entry->ops.vm_pre_hw_release(entry->data);
if (rc) {
SDE_ERROR("pre_release failed for device: %d\n",
entry->dev->id);
goto pre_release_rollback;
}
}
return rc;
pre_release_rollback:
list_for_each_entry_continue_reverse(entry, &priv->vm_client_list,
list) {
if (!entry->ops.vm_post_hw_acquire)
continue;
rc = entry->ops.vm_post_hw_acquire(entry->data);
if (rc) {
SDE_ERROR(
"post_acquire failed during rollback for device: %d\n",
entry->dev->id);
break;
}
}
return rc;
}

12
msm/sde/sde_vm_common.h
View File

@@ -63,4 +63,16 @@ int sde_vm_get_resources(struct sde_kms *sde_kms, struct msm_io_res *io_res);
*/
void sde_vm_free_resources(struct msm_io_res *io_res);
/**
* sde_vm_post_acquire - handle post_acquire events with all the VM clients
* @kms: handle to sde_kms
*/
int sde_vm_post_acquire(struct sde_kms *kms);
/**
* sde_vm_pre_release - handle pre_release events with all the VM clients
* @kms: handle to sde_kms
*/
int sde_vm_pre_release(struct sde_kms *kms);
#endif /* __SDE_VM_COMMON_H__ */

2
msm/sde/sde_vm_primary.c
View File

@@ -254,6 +254,8 @@ static void _sde_vm_set_ops(struct sde_vm_ops *ops)
{
memset(ops, 0, sizeof(*ops));
ops->vm_client_pre_release = sde_vm_pre_release;
ops->vm_client_post_acquire = sde_vm_post_acquire;
ops->vm_release = _sde_vm_release;
ops->vm_owns_hw = sde_vm_owns_hw;
ops->vm_deinit = _sde_vm_deinit;

2
msm/sde/sde_vm_trusted.c
View File

@@ -332,6 +332,8 @@ static void _sde_vm_set_ops(struct sde_vm_ops *ops)
{
memset(ops, 0, sizeof(*ops));
ops->vm_client_pre_release = sde_vm_pre_release;
ops->vm_client_post_acquire = sde_vm_post_acquire;
ops->vm_release = _sde_vm_release;
ops->vm_owns_hw = sde_vm_owns_hw;
ops->vm_deinit = _sde_vm_deinit;