| /*************************************************************************/ /*! |
| @File |
| @Title Linux specific per process data functions |
| @Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved |
| @License Dual MIT/GPLv2 |
| |
| The contents of this file are subject to the MIT license as set out below. |
| |
| Permission is hereby granted, free of charge, to any person obtaining a copy |
| of this software and associated documentation files (the "Software"), to deal |
| in the Software without restriction, including without limitation the rights |
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| copies of the Software, and to permit persons to whom the Software is |
| furnished to do so, subject to the following conditions: |
| |
| The above copyright notice and this permission notice shall be included in |
| all copies or substantial portions of the Software. |
| |
| Alternatively, the contents of this file may be used under the terms of |
| the GNU General Public License Version 2 ("GPL") in which case the provisions |
| of GPL are applicable instead of those above. |
| |
| If you wish to allow use of your version of this file only under the terms of |
| GPL, and not to allow others to use your version of this file under the terms |
| of the MIT license, indicate your decision by deleting the provisions above |
| and replace them with the notice and other provisions required by GPL as set |
| out in the file called "GPL-COPYING" included in this distribution. If you do |
| not delete the provisions above, a recipient may use your version of this file |
| under the terms of either the MIT license or GPL. |
| |
| This License is also included in this distribution in the file called |
| "MIT-COPYING". |
| |
| EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS |
| PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING |
| BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR |
| PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR |
| COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER |
| IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ /**************************************************************************/ |
| |
| #include <linux/version.h> |
| |
| #include "connection_server.h" |
| #include "osconnection_server.h" |
| |
| #include "env_connection.h" |
| #include "allocmem.h" |
| #include "pvr_debug.h" |
| |
| #include <linux/sched.h> |
| |
| #if defined (SUPPORT_ION) |
| #include <linux/err.h> |
| #include PVR_ANDROID_ION_HEADER |
| |
| /* |
| The ion device (the base object for all requests) |
| gets created by the system and we acquire it via |
| linux specific functions provided by the system layer |
| */ |
| #include "ion_sys.h" |
| #endif |
| |
| PVRSRV_ERROR OSConnectionPrivateDataInit(IMG_HANDLE *phOsPrivateData, void *pvOSData) |
| { |
| ENV_CONNECTION_PRIVATE_DATA *psPrivData = pvOSData; |
| ENV_CONNECTION_DATA *psEnvConnection; |
| #if defined(SUPPORT_ION) && (LINUX_VERSION_CODE < KERNEL_VERSION(4, 12, 0)) |
| ENV_ION_CONNECTION_DATA *psIonConnection; |
| #endif |
| |
| *phOsPrivateData = OSAllocZMem(sizeof(ENV_CONNECTION_DATA)); |
| |
| if (*phOsPrivateData == NULL) |
| { |
| PVR_DPF((PVR_DBG_ERROR, "%s: OSAllocMem failed", __func__)); |
| return PVRSRV_ERROR_OUT_OF_MEMORY; |
| } |
| |
| psEnvConnection = (ENV_CONNECTION_DATA *)*phOsPrivateData; |
| |
| psEnvConnection->owner = current->tgid; |
| |
| /* Save the pointer to our struct file */ |
| psEnvConnection->psFile = psPrivData->psFile; |
| psEnvConnection->psDevNode = psPrivData->psDevNode; |
| |
| #if defined(SUPPORT_ION) && (LINUX_VERSION_CODE < KERNEL_VERSION(4, 12, 0)) |
| psIonConnection = (ENV_ION_CONNECTION_DATA *)OSAllocZMem(sizeof(ENV_ION_CONNECTION_DATA)); |
| if (psIonConnection == NULL) |
| { |
| PVR_DPF((PVR_DBG_ERROR, "%s: OSAllocMem failed", __func__)); |
| return PVRSRV_ERROR_OUT_OF_MEMORY; |
| } |
| |
| psEnvConnection->psIonData = psIonConnection; |
| /* |
| We can have more then one connection per process so we need more then |
| the PID to have a unique name |
| */ |
| psEnvConnection->psIonData->psIonDev = IonDevAcquire(); |
| OSSNPrintf(psEnvConnection->psIonData->azIonClientName, ION_CLIENT_NAME_SIZE, "pvr_ion_client-%p-%d", *phOsPrivateData, OSGetCurrentClientProcessIDKM()); |
| psEnvConnection->psIonData->psIonClient = |
| ion_client_create(psEnvConnection->psIonData->psIonDev, |
| psEnvConnection->psIonData->azIonClientName); |
| |
| if (IS_ERR_OR_NULL(psEnvConnection->psIonData->psIonClient)) |
| { |
| PVR_DPF((PVR_DBG_ERROR, "OSConnectionPrivateDataInit: Couldn't create " |
| "ion client for per connection data")); |
| return PVRSRV_ERROR_OUT_OF_MEMORY; |
| } |
| #endif /* SUPPORT_ION && (LINUX_VERSION_CODE < KERNEL_VERSION(4, 12, 0)) */ |
| return PVRSRV_OK; |
| } |
| |
| PVRSRV_ERROR OSConnectionPrivateDataDeInit(IMG_HANDLE hOsPrivateData) |
| { |
| ENV_CONNECTION_DATA *psEnvConnection; |
| |
| if (hOsPrivateData == NULL) |
| { |
| return PVRSRV_OK; |
| } |
| |
| psEnvConnection = hOsPrivateData; |
| |
| #if defined(SUPPORT_ION) && (LINUX_VERSION_CODE < KERNEL_VERSION(4, 12, 0)) |
| PVR_ASSERT(psEnvConnection->psIonData != NULL); |
| |
| PVR_ASSERT(psEnvConnection->psIonData->psIonClient != NULL); |
| ion_client_destroy(psEnvConnection->psIonData->psIonClient); |
| |
| IonDevRelease(psEnvConnection->psIonData->psIonDev); |
| OSFreeMem(psEnvConnection->psIonData); |
| #endif |
| |
| OSFreeMem(hOsPrivateData); |
| /*not nulling pointer, copy on stack*/ |
| |
| return PVRSRV_OK; |
| } |
| |
| |
| PVRSRV_DEVICE_NODE *OSGetDevData(CONNECTION_DATA *psConnection) |
| { |
| ENV_CONNECTION_DATA *psEnvConnection; |
| |
| psEnvConnection = PVRSRVConnectionPrivateData(psConnection); |
| PVR_ASSERT(psEnvConnection); |
| |
| return psEnvConnection->psDevNode; |
| } |