| /*************************************************************************/ /*! |
| @File |
| @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/interrupt.h> |
| |
| #include "pvr_debug.h" |
| #include "allocmem.h" |
| #include "interrupt_support.h" |
| |
| typedef struct LISR_DATA_TAG |
| { |
| IMG_UINT32 ui32IRQ; |
| PFN_SYS_LISR pfnLISR; |
| void *pvData; |
| } LISR_DATA; |
| |
| static irqreturn_t SystemISRWrapper(int irq, void *dev_id) |
| { |
| LISR_DATA *psLISRData = (LISR_DATA *)dev_id; |
| |
| PVR_UNREFERENCED_PARAMETER(irq); |
| |
| if (psLISRData) |
| { |
| if (psLISRData->pfnLISR(psLISRData->pvData)) |
| { |
| return IRQ_HANDLED; |
| } |
| } |
| else |
| { |
| PVR_DPF((PVR_DBG_ERROR, "%s: Missing interrupt data", __func__)); |
| } |
| |
| return IRQ_NONE; |
| } |
| |
| PVRSRV_ERROR OSInstallSystemLISR(IMG_HANDLE *phLISR, |
| IMG_UINT32 ui32IRQ, |
| const IMG_CHAR *pszDevName, |
| PFN_SYS_LISR pfnLISR, |
| void *pvData, |
| IMG_UINT32 ui32Flags) |
| { |
| LISR_DATA *psLISRData; |
| unsigned long ulIRQFlags = 0; |
| |
| if (pfnLISR == NULL || pvData == NULL) |
| { |
| return PVRSRV_ERROR_INVALID_PARAMS; |
| } |
| |
| if (ui32Flags & ~SYS_IRQ_FLAG_MASK) |
| { |
| return PVRSRV_ERROR_INVALID_PARAMS; |
| } |
| |
| switch (ui32Flags & SYS_IRQ_FLAG_TRIGGER_MASK) |
| { |
| case SYS_IRQ_FLAG_TRIGGER_DEFAULT: |
| break; |
| case SYS_IRQ_FLAG_TRIGGER_LOW: |
| ulIRQFlags |= IRQF_TRIGGER_LOW; |
| break; |
| case SYS_IRQ_FLAG_TRIGGER_HIGH: |
| ulIRQFlags |= IRQF_TRIGGER_HIGH; |
| break; |
| default: |
| return PVRSRV_ERROR_INVALID_PARAMS; |
| } |
| |
| if (ui32Flags & SYS_IRQ_FLAG_SHARED) |
| { |
| ulIRQFlags |= IRQF_SHARED; |
| } |
| |
| psLISRData = OSAllocMem(sizeof *psLISRData); |
| if (psLISRData == NULL) |
| { |
| return PVRSRV_ERROR_OUT_OF_MEMORY; |
| } |
| |
| psLISRData->ui32IRQ = ui32IRQ; |
| psLISRData->pfnLISR = pfnLISR; |
| psLISRData->pvData = pvData; |
| |
| if (request_irq(ui32IRQ, SystemISRWrapper, ulIRQFlags, pszDevName, psLISRData)) |
| { |
| OSFreeMem(psLISRData); |
| |
| return PVRSRV_ERROR_UNABLE_TO_REGISTER_ISR_HANDLER; |
| } |
| |
| *phLISR = (IMG_HANDLE)psLISRData; |
| |
| return PVRSRV_OK; |
| } |
| |
| PVRSRV_ERROR OSUninstallSystemLISR(IMG_HANDLE hLISR) |
| { |
| LISR_DATA *psLISRData = (LISR_DATA *)hLISR; |
| |
| if (psLISRData == NULL) |
| { |
| return PVRSRV_ERROR_INVALID_PARAMS; |
| } |
| |
| free_irq(psLISRData->ui32IRQ, psLISRData); |
| |
| OSFreeMem(psLISRData); |
| |
| return PVRSRV_OK; |
| } |