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tegra: dce: use wait queue instead of completions

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- completions uses spin lock and disables irq
resulting in processor getting blocked to receive
mailbox interrupts during IPC synchronization.
- current change uses wait queues instead of
completions for IPC synchronization to overcome
above possibility of IPC blocked on DCE.

JIRA TDS-5691

Change-Id: I12e06ff4d31cf47d87e7a9d76d9915e5e2210de6
Signed-off-by: Santosh Reddy Galma <galmar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-t23x/+/2428661
Reviewed-by: automaticguardword <automaticguardword@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Arun Swain <arswain@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Santosh Reddy Galma
2020-10-15 20:10:31 +05:30
committed by Laxman Dewangan
parent 25954c13e6
commit f452d16f44
2 changed files with 37 additions and 5 deletions
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20
drivers/platform/tegra/dce/include/dce-client-ipc-internal.h
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@@ -16,14 +16,30 @@
#include <linux/platform/tegra/dce/dce-client-ipc.h>
/**
* struct tegra_dce_client_ipc - Data Structure to hold client specific ipc
* data pertaining to IPC type
*
* @valid : Tells if the client ipc data held by data structure is valid
* @data : Pointer to any specific data passed by client during registration
* for corresponding IPC type
* @type : Corresponding IPC type as defined in CPU driver
* @int_type : IPC interface type for above IPC type as defined in CPU driver
* @d : pointer to OS agnostic dce struct. Stores all runtime info for dce
* cluster elements
* @recv_wait : condition variable used for IPC synchronization
* @complete : atomic variable used for IPC synchronization
* @callback_fn : function pointer to the callback function passed by the
* client during registration
*/
struct tegra_dce_client_ipc {
bool valid;
void *data;
uint32_t type;
uint32_t int_type;
struct tegra_dce *d;
struct dce_ivc_channel *ch;
struct completion recv_wait;
struct dce_cond recv_wait;
atomic_t complete;
tegra_dce_client_ipc_callback_t callback_fn;
};