diff options
Diffstat (limited to 'pvr-source/services4/srvkm/env/linux/module.c')
| -rw-r--r-- | pvr-source/services4/srvkm/env/linux/module.c | 1214 |
1 files changed, 1214 insertions, 0 deletions
diff --git a/pvr-source/services4/srvkm/env/linux/module.c b/pvr-source/services4/srvkm/env/linux/module.c new file mode 100644 index 0000000..487069d --- /dev/null +++ b/pvr-source/services4/srvkm/env/linux/module.c @@ -0,0 +1,1214 @@ +/*************************************************************************/ /*! +@Title Linux module setup +@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> + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38)) +#ifndef AUTOCONF_INCLUDED +#include <linux/config.h> +#endif +#endif + +#if defined(SUPPORT_DRI_DRM) && !defined(SUPPORT_DRI_DRM_PLUGIN) +#define PVR_MOD_STATIC +#else + /* + * For LDM drivers, define PVR_LDM_MODULE to indicate generic LDM + * support is required, besides indicating the exact support + * required (e.g. platform, or PCI device). + */ + #if defined(LDM_PLATFORM) + #define PVR_LDM_PLATFORM_MODULE + #define PVR_LDM_DEVICE_CLASS + #define PVR_LDM_MODULE + #else + #if defined(LDM_PCI) + #define PVR_LDM_DEVICE_CLASS + #define PVR_LDM_PCI_MODULE + #define PVR_LDM_MODULE + #else + #if defined(SYS_SHARES_WITH_3PKM) + #define PVR_LDM_DEVICE_CLASS + #endif + #endif + #endif +#define PVR_MOD_STATIC static +#endif + +#if defined(PVR_LDM_PLATFORM_PRE_REGISTERED) +#if !defined(NO_HARDWARE) +#define PVR_USE_PRE_REGISTERED_PLATFORM_DEV +#endif +#endif + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/fs.h> +#include <linux/proc_fs.h> + +#if defined(SUPPORT_DRI_DRM) +#include <drm/drmP.h> +#if defined(PVR_SECURE_DRM_AUTH_EXPORT) +#include "env_perproc.h" +#endif +#endif + +#if defined(PVR_LDM_PLATFORM_MODULE) +#include <linux/platform_device.h> +#endif /* PVR_LDM_PLATFORM_MODULE */ + +#if defined(PVR_LDM_PCI_MODULE) +#include <linux/pci.h> +#endif /* PVR_LDM_PCI_MODULE */ + +#if defined(PVR_LDM_DEVICE_CLASS) +#include <linux/device.h> +#endif /* PVR_LDM_DEVICE_CLASS */ + +#if defined(DEBUG) && defined(PVR_MANUAL_POWER_CONTROL) +#include <asm/uaccess.h> +#endif + +#include "img_defs.h" +#include "services.h" +#include "kerneldisplay.h" +#include "kernelbuffer.h" +#include "syscommon.h" +#include "pvrmmap.h" +#include "mutils.h" +#include "mm.h" +#include "mmap.h" +#include "mutex.h" +#include "pvr_debug.h" +#include "srvkm.h" +#include "perproc.h" +#include "handle.h" +#include "pvr_bridge_km.h" +#include "proc.h" +#include "pvrmodule.h" +#include "private_data.h" +#include "lock.h" +#include "linkage.h" +#include "buffer_manager.h" + +#if defined(SUPPORT_DRI_DRM) +#include "pvr_drm.h" +#endif +/* + * DRVNAME is the name we use to register our driver. + * DEVNAME is the name we use to register actual device nodes. + */ +#if defined(PVR_LDM_MODULE) +#define DRVNAME PVR_LDM_DRIVER_REGISTRATION_NAME +#endif +#define DEVNAME PVRSRV_MODNAME + +#if defined(SUPPORT_DRI_DRM) +#define PRIVATE_DATA(pFile) ((pFile)->driver_priv) +#else +#define PRIVATE_DATA(pFile) ((pFile)->private_data) +#endif + +/* + * This is all module configuration stuff required by the linux kernel. + */ +MODULE_SUPPORTED_DEVICE(DEVNAME); + +#if defined(PVRSRV_NEED_PVR_DPF) +#include <linux/moduleparam.h> +extern IMG_UINT32 gPVRDebugLevel; +module_param(gPVRDebugLevel, uint, 0644); +MODULE_PARM_DESC(gPVRDebugLevel, "Sets the level of debug output (default 0x7)"); +#endif /* defined(PVRSRV_NEED_PVR_DPF) */ + +#if defined(CONFIG_ION_OMAP) +#include <linux/ion.h> +#include <linux/omap_ion.h> +#include "ion.h" +extern void omap_ion_register_pvr_export(void *); +extern struct ion_device *omap_ion_device; +struct ion_client *gpsIONClient; +EXPORT_SYMBOL(gpsIONClient); +#endif /* defined(CONFIG_ION_OMAP) */ + +/* PRQA S 3207 2 */ /* ignore 'not used' warning */ +EXPORT_SYMBOL(PVRGetDisplayClassJTable); +EXPORT_SYMBOL(PVRGetBufferClassJTable); + +#if defined(PVR_LDM_DEVICE_CLASS) && !defined(SUPPORT_DRI_DRM) +/* + * Device class used for /sys entries (and udev device node creation) + */ +static struct class *psPvrClass; +#endif + +#if !defined(SUPPORT_DRI_DRM) +/* + * This is the major number we use for all nodes in /dev. + */ +static int AssignedMajorNumber; + +/* + * These are the operations that will be associated with the device node + * we create. + * + * With gcc -W, specifying only the non-null members produces "missing + * initializer" warnings. +*/ +static int PVRSRVOpen(struct inode* pInode, struct file* pFile); +static int PVRSRVRelease(struct inode* pInode, struct file* pFile); + +static struct file_operations pvrsrv_fops = +{ + .owner=THIS_MODULE, + .unlocked_ioctl = PVRSRV_BridgeDispatchKM, + .open=PVRSRVOpen, + .release=PVRSRVRelease, + .mmap=PVRMMap, +}; +#endif + +PVRSRV_LINUX_MUTEX gPVRSRVLock; + +/* PID of process being released */ +IMG_UINT32 gui32ReleasePID; + +#if defined(DEBUG) && defined(PVR_MANUAL_POWER_CONTROL) +static IMG_UINT32 gPVRPowerLevel; +#endif + +#if defined(PVR_LDM_MODULE) + +#if defined(PVR_LDM_PLATFORM_MODULE) +#define LDM_DEV struct platform_device +#define LDM_DRV struct platform_driver +#endif /*PVR_LDM_PLATFORM_MODULE */ + +#if defined(PVR_LDM_PCI_MODULE) +#define LDM_DEV struct pci_dev +#define LDM_DRV struct pci_driver +#endif /* PVR_LDM_PCI_MODULE */ +/* + * This is the driver interface we support. + */ +#if defined(PVR_LDM_PLATFORM_MODULE) +static int PVRSRVDriverRemove(LDM_DEV *device); +static int PVRSRVDriverProbe(LDM_DEV *device); +#endif +#if defined(PVR_LDM_PCI_MODULE) +static void PVRSRVDriverRemove(LDM_DEV *device); +static int PVRSRVDriverProbe(LDM_DEV *device, const struct pci_device_id *id); +#endif +static int PVRSRVDriverSuspend(LDM_DEV *device, pm_message_t state); +static void PVRSRVDriverShutdown(LDM_DEV *device); +static int PVRSRVDriverResume(LDM_DEV *device); + +#if defined(PVR_LDM_PCI_MODULE) +/* This structure is used by the Linux module code */ +struct pci_device_id powervr_id_table[] __devinitdata = { + {PCI_DEVICE(SYS_SGX_DEV_VENDOR_ID, SYS_SGX_DEV_DEVICE_ID)}, +#if defined (SYS_SGX_DEV1_DEVICE_ID) + {PCI_DEVICE(SYS_SGX_DEV_VENDOR_ID, SYS_SGX_DEV1_DEVICE_ID)}, +#endif + {0} +}; + +MODULE_DEVICE_TABLE(pci, powervr_id_table); +#endif + +#if defined(PVR_USE_PRE_REGISTERED_PLATFORM_DEV) +static struct platform_device_id powervr_id_table[] __devinitdata = { + {SYS_SGX_DEV_NAME, 0}, + {} +}; +#endif + +static LDM_DRV powervr_driver = { +#if defined(PVR_LDM_PLATFORM_MODULE) + .driver = { + .name = DRVNAME, + }, +#endif +#if defined(PVR_LDM_PCI_MODULE) + .name = DRVNAME, +#endif +#if defined(PVR_LDM_PCI_MODULE) || defined(PVR_USE_PRE_REGISTERED_PLATFORM_DEV) + .id_table = powervr_id_table, +#endif + .probe = PVRSRVDriverProbe, +#if defined(PVR_LDM_PLATFORM_MODULE) + .remove = PVRSRVDriverRemove, +#endif +#if defined(PVR_LDM_PCI_MODULE) + .remove = __devexit_p(PVRSRVDriverRemove), +#endif + .suspend = PVRSRVDriverSuspend, + .resume = PVRSRVDriverResume, + .shutdown = PVRSRVDriverShutdown, +}; + +LDM_DEV *gpsPVRLDMDev; + +#if defined(MODULE) && defined(PVR_LDM_PLATFORM_MODULE) && \ + !defined(PVR_USE_PRE_REGISTERED_PLATFORM_DEV) +static void PVRSRVDeviceRelease(struct device unref__ *pDevice) +{ +} + +static struct platform_device powervr_device = { + .name = DEVNAME, + .id = -1, + .dev = { + .release = PVRSRVDeviceRelease + } +}; +#endif + +/*! +****************************************************************************** + + @Function PVRSRVDriverProbe + + @Description + + See whether a given device is really one we can drive. The platform bus + handler has already established that we should be able to service this device + because of the name match. We probably don't need to do anything else. + + @input pDevice - the device for which a probe is requested + + @Return 0 for success or <0 for an error. + +*****************************************************************************/ +#if defined(PVR_LDM_PLATFORM_MODULE) +static int PVRSRVDriverProbe(LDM_DEV *pDevice) +#endif +#if defined(PVR_LDM_PCI_MODULE) +static int __devinit PVRSRVDriverProbe(LDM_DEV *pDevice, const struct pci_device_id *id) +#endif +{ + SYS_DATA *psSysData; + + PVR_TRACE(("PVRSRVDriverProbe(pDevice=%p)", pDevice)); + +#if 0 /* INTEGRATION_POINT */ + /* Some systems require device-specific system initialisation. + * E.g. this lets the OS track a device's dependencies on various + * system hardware. + * + * Note: some systems use this to enable HW that SysAcquireData + * will depend on, therefore it must be called first. + */ + if (PerDeviceSysInitialise((IMG_PVOID)pDevice) != PVRSRV_OK) + { + return -EINVAL; + } +#endif + /* SysInitialise only designed to be called once. + */ + psSysData = SysAcquireDataNoCheck(); + if (psSysData == IMG_NULL) + { + gpsPVRLDMDev = pDevice; + if (SysInitialise() != PVRSRV_OK) + { + return -ENODEV; + } + } + +#if defined(CONFIG_ION_OMAP) + gpsIONClient = ion_client_create(omap_ion_device, + 1 << ION_HEAP_TYPE_CARVEOUT | + 1 << OMAP_ION_HEAP_TYPE_TILER | + 1 << ION_HEAP_TYPE_SYSTEM, + "pvr"); + if (IS_ERR_OR_NULL(gpsIONClient)) + { + PVR_DPF((PVR_DBG_ERROR, "PVRSRVDriverProbe: Couldn't create ion client")); + return PTR_ERR(gpsIONClient); + } + omap_ion_register_pvr_export(&PVRSRVExportFDToIONHandles); +#endif /* defined(CONFIG_ION_OMAP) */ + + return 0; +} + + +/*! +****************************************************************************** + + @Function PVRSRVDriverRemove + + @Description + + This call is the opposite of the probe call: it is called when the device is + being removed from the driver's control. See the file $KERNELDIR/drivers/ + base/bus.c:device_release_driver() for the call to this function. + + This is the correct place to clean up anything our driver did while it was + asoociated with the device. + + @input pDevice - the device for which driver detachment is happening + + @Return 0 for success or <0 for an error. + +*****************************************************************************/ +#if defined (PVR_LDM_PLATFORM_MODULE) +static int PVRSRVDriverRemove(LDM_DEV *pDevice) +#endif +#if defined(PVR_LDM_PCI_MODULE) +static void __devexit PVRSRVDriverRemove(LDM_DEV *pDevice) +#endif +{ + SYS_DATA *psSysData; + + PVR_TRACE(("PVRSRVDriverRemove(pDevice=%p)", pDevice)); + +#if defined(CONFIG_ION_OMAP) + ion_client_destroy(gpsIONClient); + gpsIONClient = IMG_NULL; +#endif + + SysAcquireData(&psSysData); + +#if defined(DEBUG) && defined(PVR_MANUAL_POWER_CONTROL) + if (gPVRPowerLevel != 0) + { + if (PVRSRVSetPowerStateKM(PVRSRV_SYS_POWER_STATE_D0) == PVRSRV_OK) + { + gPVRPowerLevel = 0; + } + } +#endif + (void) SysDeinitialise(psSysData); + + gpsPVRLDMDev = IMG_NULL; + +#if 0 /* INTEGRATION_POINT */ + /* See previous integration point for details. */ + if (PerDeviceSysDeInitialise((IMG_PVOID)pDevice) != PVRSRV_OK) + { + return -EINVAL; + } +#endif + +#if defined (PVR_LDM_PLATFORM_MODULE) + return 0; +#endif +#if defined (PVR_LDM_PCI_MODULE) + return; +#endif +} +#endif /* defined(PVR_LDM_MODULE) */ + + +#if defined(PVR_LDM_MODULE) || defined(SUPPORT_DRI_DRM) +static PVRSRV_LINUX_MUTEX gsPMMutex; +static IMG_BOOL bDriverIsSuspended; +static IMG_BOOL bDriverIsShutdown; +#endif + +#if defined(PVR_LDM_MODULE) || defined(PVR_DRI_DRM_PLATFORM_DEV) +/*! +****************************************************************************** + + @Function PVRSRVDriverShutdown + + @Description + + Suspend device operation for system shutdown. This is called as part of the + system halt/reboot process. The driver is put into a quiescent state by + setting the power state to D3. + + @input pDevice - the device for which shutdown is requested + + @Return nothing + +*****************************************************************************/ +#if defined(SUPPORT_DRI_DRM) && !defined(PVR_DRI_DRM_PLATFORM_DEV) && \ + !defined(SUPPORT_DRI_DRM_PLUGIN) +void PVRSRVDriverShutdown(struct drm_device *pDevice) +#else +PVR_MOD_STATIC void PVRSRVDriverShutdown(LDM_DEV *pDevice) +#endif +{ + PVR_TRACE(("PVRSRVDriverShutdown(pDevice=%p)", pDevice)); + + LinuxLockMutex(&gsPMMutex); + + if (!bDriverIsShutdown && !bDriverIsSuspended) + { + /* + * Take the bridge mutex, and never release it, to stop + * processes trying to use the driver after it has been + * shutdown. + */ + LinuxLockMutex(&gPVRSRVLock); + + (void) PVRSRVSetPowerStateKM(PVRSRV_SYS_POWER_STATE_D3); + } + + bDriverIsShutdown = IMG_TRUE; + + /* The bridge mutex is held on exit */ + LinuxUnLockMutex(&gsPMMutex); +} + +#endif /* defined(PVR_LDM_MODULE) || defined(PVR_DRI_DRM_PLATFORM_DEV) */ + + +#if defined(PVR_LDM_MODULE) || defined(SUPPORT_DRI_DRM) +/*! +****************************************************************************** + + @Function PVRSRVDriverSuspend + + @Description + + For 2.6 kernels: + Suspend device operation. We always get three calls to this regardless of + the state (D1-D3) chosen. The order is SUSPEND_DISABLE, SUSPEND_SAVE_STATE + then SUSPEND_POWER_DOWN. We take action as soon as we get the disable call, + the other states not being handled by us yet. + + For MontaVista 2.4 kernels: + This call gets made once only when someone does something like + + # echo -e -n "suspend powerdown 0" >/sys.devices/legacy/pvrsrv0/power + + The 3rd, numeric parameter (0) in the above has no relevence and is not + passed into us. The state parameter is always zero and the level parameter + is always SUSPEND_POWER_DOWN. Vive la difference! + + @input pDevice - the device for which resume is requested + + @Return 0 for success or <0 for an error. + +*****************************************************************************/ +#if defined(SUPPORT_DRI_DRM) && !defined(PVR_DRI_DRM_PLATFORM_DEV) && \ + !defined(SUPPORT_DRI_DRM_PLUGIN) +#if defined(SUPPORT_DRM_MODESET) +int PVRSRVDriverSuspend(struct pci_dev *pDevice, pm_message_t state) +#else +int PVRSRVDriverSuspend(struct drm_device *pDevice, pm_message_t state) +#endif +#else +PVR_MOD_STATIC int PVRSRVDriverSuspend(LDM_DEV *pDevice, pm_message_t state) +#endif +{ + int res = 0; +#if !(defined(DEBUG) && defined(PVR_MANUAL_POWER_CONTROL) && !defined(SUPPORT_DRI_DRM)) + PVR_TRACE(( "PVRSRVDriverSuspend(pDevice=%p)", pDevice)); + + LinuxLockMutex(&gsPMMutex); + + if (!bDriverIsSuspended && !bDriverIsShutdown) + { + LinuxLockMutex(&gPVRSRVLock); + + if (PVRSRVSetPowerStateKM(PVRSRV_SYS_POWER_STATE_D3) == PVRSRV_OK) + { + /* The bridge mutex will be held until we resume */ + bDriverIsSuspended = IMG_TRUE; + } + else + { + LinuxUnLockMutex(&gPVRSRVLock); + res = -EINVAL; + } + } + + LinuxUnLockMutex(&gsPMMutex); +#endif + return res; +} + + +/*! +****************************************************************************** + + @Function PVRSRVDriverResume + + @Description + + Resume device operation following a lull due to earlier suspension. It is + implicit we're returning to D0 (fully operational) state. We always get three + calls to this using level thus: RESUME_POWER_ON, RESUME_RESTORE_STATE then + RESUME_ENABLE. On 2.6 kernels We don't do anything until we get the enable + call; on the MontaVista set-up we only ever get the RESUME_POWER_ON call. + + @input pDevice - the device for which resume is requested + + @Return 0 for success or <0 for an error. + +*****************************************************************************/ +#if defined(SUPPORT_DRI_DRM) && !defined(PVR_DRI_DRM_PLATFORM_DEV) && \ + !defined(SUPPORT_DRI_DRM_PLUGIN) +#if defined(SUPPORT_DRM_MODESET) +int PVRSRVDriverResume(struct pci_dev *pDevice) +#else +int PVRSRVDriverResume(struct drm_device *pDevice) +#endif +#else +PVR_MOD_STATIC int PVRSRVDriverResume(LDM_DEV *pDevice) +#endif +{ + int res = 0; +#if !(defined(DEBUG) && defined(PVR_MANUAL_POWER_CONTROL) && !defined(SUPPORT_DRI_DRM)) + PVR_TRACE(("PVRSRVDriverResume(pDevice=%p)", pDevice)); + + LinuxLockMutex(&gsPMMutex); + + if (bDriverIsSuspended && !bDriverIsShutdown) + { + if (PVRSRVSetPowerStateKM(PVRSRV_SYS_POWER_STATE_D0) == PVRSRV_OK) + { + bDriverIsSuspended = IMG_FALSE; + LinuxUnLockMutex(&gPVRSRVLock); + } + else + { + /* The bridge mutex is not released on failure */ + res = -EINVAL; + } + } + + LinuxUnLockMutex(&gsPMMutex); +#endif + return res; +} +#endif /* defined(PVR_LDM_MODULE) || defined(SUPPORT_DRI_DRM) */ + + +#if defined(DEBUG) && defined(PVR_MANUAL_POWER_CONTROL) && !defined(SUPPORT_DRI_DRM) +/* + * If PVR_LDM_PCI_MODULE is defined (and PVR_MANUAL_POWER_CONTROL is *NOT* defined), + * the device can be suspended and resumed without suspending/resuming the + * system, by writing values into the power/state sysfs file for the device. + * To suspend: + * echo -n 2 > power/state + * To Resume: + * echo -n 0 > power/state + * + * The problem with this approach is that the device is usually left + * powered up; it is the responsibility of the bus driver to remove + * the power. + * + * Defining PVR_MANUAL_POWER_CONTROL is intended to make it easier to + * debug power management issues, especially when power is really removed + * from the device. It is easier to debug the driver if it is not being + * suspended/resumed with the rest of the system. + * + * When PVR_MANUAL_POWER_CONTROL is defined, the following proc entry is + * created: + * /proc/pvr/power_control + * The driver suspend/resume entry points defined below no longer suspend or + * resume the device. To suspend the device, type the following: + * echo 2 > /proc/pvr/power_control + * To resume the device, type: + * echo 0 > /proc/pvr/power_control + * + * The following example shows how to suspend/resume the device independently + * of the rest of the system. + * Suspend the device: + * echo 2 > /proc/pvr/power_control + * Suspend the system. Then you should be able to suspend and resume + * as normal. To resume the device type the following: + * echo 0 > /proc/pvr/power_control + */ + +IMG_INT PVRProcSetPowerLevel(struct file *file, const IMG_CHAR *buffer, IMG_UINT32 count, IMG_VOID *data) +{ + IMG_CHAR data_buffer[2]; + IMG_UINT32 PVRPowerLevel; + + if (count != sizeof(data_buffer)) + { + return -EINVAL; + } + else + { + if (copy_from_user(data_buffer, buffer, count)) + return -EINVAL; + if (data_buffer[count - 1] != '\n') + return -EINVAL; + PVRPowerLevel = data_buffer[0] - '0'; + if (PVRPowerLevel != gPVRPowerLevel) + { + if (PVRPowerLevel != 0) + { + if (PVRSRVSetPowerStateKM(PVRSRV_SYS_POWER_STATE_D3) != PVRSRV_OK) + { + return -EINVAL; + } + } + else + { + if (PVRSRVSetPowerStateKM(PVRSRV_SYS_POWER_STATE_D0) != PVRSRV_OK) + { + return -EINVAL; + } + } + + gPVRPowerLevel = PVRPowerLevel; + } + } + return (count); +} + +void ProcSeqShowPowerLevel(struct seq_file *sfile,void* el) +{ + seq_printf(sfile, "%lu\n", gPVRPowerLevel); +} + +#endif + +/*! +****************************************************************************** + + @Function PVRSRVOpen + + @Description + + Release access the PVR services node - called when a file is closed, whether + at exit or using close(2) system call. + + @input pInode - the inode for the file being openeded + + @input pFile - the file handle data for the actual file being opened + + @Return 0 for success or <0 for an error. + +*****************************************************************************/ +#if defined(SUPPORT_DRI_DRM) +int PVRSRVOpen(struct drm_device unref__ *dev, struct drm_file *pFile) +#else +static int PVRSRVOpen(struct inode unref__ * pInode, struct file *pFile) +#endif +{ + PVRSRV_FILE_PRIVATE_DATA *psPrivateData; + IMG_HANDLE hBlockAlloc; + int iRet = -ENOMEM; + PVRSRV_ERROR eError; + IMG_UINT32 ui32PID; +#if defined(SUPPORT_DRI_DRM) && defined(PVR_SECURE_DRM_AUTH_EXPORT) + PVRSRV_ENV_PER_PROCESS_DATA *psEnvPerProc; +#endif + + LinuxLockMutex(&gPVRSRVLock); + + ui32PID = OSGetCurrentProcessIDKM(); + + if (PVRSRVProcessConnect(ui32PID, 0) != PVRSRV_OK) + goto err_unlock; + +#if defined(SUPPORT_DRI_DRM) && defined(PVR_SECURE_DRM_AUTH_EXPORT) + psEnvPerProc = PVRSRVPerProcessPrivateData(ui32PID); + if (psEnvPerProc == IMG_NULL) + { + PVR_DPF((PVR_DBG_ERROR, "%s: No per-process private data", __FUNCTION__)); + goto err_unlock; + } +#endif + + eError = OSAllocMem(PVRSRV_OS_NON_PAGEABLE_HEAP, + sizeof(PVRSRV_FILE_PRIVATE_DATA), + (IMG_PVOID *)&psPrivateData, + &hBlockAlloc, + "File Private Data"); + + if(eError != PVRSRV_OK) + goto err_unlock; + +#if defined (SUPPORT_SID_INTERFACE) + psPrivateData->hKernelMemInfo = 0; +#else + psPrivateData->hKernelMemInfo = NULL; +#endif +#if defined(SUPPORT_DRI_DRM) && defined(PVR_SECURE_DRM_AUTH_EXPORT) + psPrivateData->psDRMFile = pFile; + + list_add_tail(&psPrivateData->sDRMAuthListItem, &psEnvPerProc->sDRMAuthListHead); +#endif + psPrivateData->ui32OpenPID = ui32PID; + psPrivateData->hBlockAlloc = hBlockAlloc; + PRIVATE_DATA(pFile) = psPrivateData; + iRet = 0; +err_unlock: + LinuxUnLockMutex(&gPVRSRVLock); + return iRet; +} + + +/*! +****************************************************************************** + + @Function PVRSRVRelease + + @Description + + Release access the PVR services node - called when a file is closed, whether + at exit or using close(2) system call. + + @input pInode - the inode for the file being released + + @input pFile - the file handle data for the actual file being released + + @Return 0 for success or <0 for an error. + +*****************************************************************************/ +#if defined(SUPPORT_DRI_DRM) +void PVRSRVRelease(void *pvPrivData) +#else +static int PVRSRVRelease(struct inode unref__ * pInode, struct file *pFile) +#endif +{ + PVRSRV_FILE_PRIVATE_DATA *psPrivateData; + int err = 0; + + LinuxLockMutex(&gPVRSRVLock); + +#if defined(SUPPORT_DRI_DRM) + psPrivateData = (PVRSRV_FILE_PRIVATE_DATA *)pvPrivData; +#else + psPrivateData = PRIVATE_DATA(pFile); +#endif + if (psPrivateData != IMG_NULL) + { +#if defined(SUPPORT_DRI_DRM) && defined(PVR_SECURE_DRM_AUTH_EXPORT) + list_del(&psPrivateData->sDRMAuthListItem); +#endif + + if(psPrivateData->hKernelMemInfo) + { + PVRSRV_KERNEL_MEM_INFO *psKernelMemInfo; + + /* Look up the meminfo we just exported */ + if(PVRSRVLookupHandle(KERNEL_HANDLE_BASE, + (IMG_PVOID *)&psKernelMemInfo, + psPrivateData->hKernelMemInfo, + PVRSRV_HANDLE_TYPE_MEM_INFO) != PVRSRV_OK) + { + PVR_DPF((PVR_DBG_ERROR, "%s: Failed to look up export handle", __FUNCTION__)); + err = -EFAULT; + goto err_unlock; + } + + /* Tell the XProc about the export if required */ + if (psKernelMemInfo->sShareMemWorkaround.bInUse) + { + BM_XProcIndexRelease(psKernelMemInfo->sShareMemWorkaround.ui32ShareIndex); + } + + /* This drops the psMemInfo refcount bumped on export */ + if(FreeMemCallBackCommon(psKernelMemInfo, 0, + PVRSRV_FREE_CALLBACK_ORIGIN_EXTERNAL) != PVRSRV_OK) + { + PVR_DPF((PVR_DBG_ERROR, "%s: FreeMemCallBackCommon failed", __FUNCTION__)); + err = -EFAULT; + goto err_unlock; + } + } + + /* Usually this is the same as OSGetCurrentProcessIDKM(), + * but not necessarily (e.g. fork(), child closes last..) + */ + gui32ReleasePID = psPrivateData->ui32OpenPID; + PVRSRVProcessDisconnect(psPrivateData->ui32OpenPID); + gui32ReleasePID = 0; + + OSFreeMem(PVRSRV_OS_NON_PAGEABLE_HEAP, + sizeof(PVRSRV_FILE_PRIVATE_DATA), + psPrivateData, psPrivateData->hBlockAlloc); + +#if !defined(SUPPORT_DRI_DRM) + PRIVATE_DATA(pFile) = IMG_NULL; /*nulling shared pointer*/ +#endif + } + +err_unlock: + LinuxUnLockMutex(&gPVRSRVLock); +#if defined(SUPPORT_DRI_DRM) + return; +#else + return err; +#endif +} + + +/*! +****************************************************************************** + + @Function PVRCore_Init + + @Description + + Insert the driver into the kernel. + + The device major number is allocated by the kernel dynamically. This means + that the device node (nominally /dev/pvrsrv) will need to be re-made at boot + time if the number changes between subsequent loads of the module. While the + number often stays constant between loads this is not guaranteed. The node + is made as root on the shell with: + + mknod /dev/pvrsrv c nnn 0 + + where nnn is the major number found in /proc/devices for DEVNAME and also + reported by the PVR_DPF() - look at the boot log using dmesg' to see this). + + Currently the auto-generated script /etc/init.d/rc.pvr handles creation of + the device. In other environments the device may be created either through + devfs or sysfs. + + Readable proc-filesystem entries under /proc/pvr are created with + CreateProcEntries(). These can be read at runtime to get information about + the device (eg. 'cat /proc/pvr/vm') + + __init places the function in a special memory section that the kernel frees + once the function has been run. Refer also to module_init() macro call below. + + @input none + + @Return none + +*****************************************************************************/ +#if defined(SUPPORT_DRI_DRM) +int PVRCore_Init(void) +#else +static int __init PVRCore_Init(void) +#endif +{ + int error; +#if !defined(PVR_LDM_MODULE) + PVRSRV_ERROR eError; +#endif +#if !defined(SUPPORT_DRI_DRM) && defined(PVR_LDM_DEVICE_CLASS) + struct device *psDev; +#endif + +#if !defined(SUPPORT_DRI_DRM) + /* + * Must come before attempting to print anything via Services. + * For DRM, the initialisation will already have been done. + */ + PVRDPFInit(); +#endif + PVR_TRACE(("PVRCore_Init")); + +#if defined(PVR_LDM_MODULE) || defined(SUPPORT_DRI_DRM) + LinuxInitMutex(&gsPMMutex); +#endif + LinuxInitMutex(&gPVRSRVLock); + + if (CreateProcEntries ()) + { + error = -ENOMEM; + return error; + } + + if (PVROSFuncInit() != PVRSRV_OK) + { + error = -ENOMEM; + goto init_failed; + } + + PVRLinuxMUtilsInit(); + + if(LinuxMMInit() != PVRSRV_OK) + { + error = -ENOMEM; + goto init_failed; + } + + LinuxBridgeInit(); + + PVRMMapInit(); + +#if defined(PVR_LDM_MODULE) + +#if defined(PVR_LDM_PLATFORM_MODULE) || defined(SUPPORT_DRI_DRM_PLUGIN) + if ((error = platform_driver_register(&powervr_driver)) != 0) + { + PVR_DPF((PVR_DBG_ERROR, "PVRCore_Init: unable to register platform driver (%d)", error)); + + goto init_failed; + } + +#if defined(MODULE) && !defined(PVR_USE_PRE_REGISTERED_PLATFORM_DEV) + if ((error = platform_device_register(&powervr_device)) != 0) + { + platform_driver_unregister(&powervr_driver); + + PVR_DPF((PVR_DBG_ERROR, "PVRCore_Init: unable to register platform device (%d)", error)); + + goto init_failed; + } +#endif +#endif /* PVR_LDM_PLATFORM_MODULE */ + +#if defined(PVR_LDM_PCI_MODULE) + if ((error = pci_register_driver(&powervr_driver)) != 0) + { + PVR_DPF((PVR_DBG_ERROR, "PVRCore_Init: unable to register PCI driver (%d)", error)); + + goto init_failed; + } +#endif /* PVR_LDM_PCI_MODULE */ +#endif /* defined(PVR_LDM_MODULE) */ + +#if !defined(PVR_LDM_MODULE) + /* + * Drivers using LDM, will call SysInitialise in the probe/attach code + */ + if ((eError = SysInitialise()) != PVRSRV_OK) + { + error = -ENODEV; +#if defined(TCF_REV) && (TCF_REV == 110) + if(eError == PVRSRV_ERROR_NOT_SUPPORTED) + { + printk("\nAtlas wrapper (FPGA image) version mismatch"); + error = -ENODEV; + } +#endif + goto init_failed; + } +#endif /* !defined(PVR_LDM_MODULE) */ + +#if !defined(SUPPORT_DRI_DRM) + AssignedMajorNumber = register_chrdev(0, DEVNAME, &pvrsrv_fops); + + if (AssignedMajorNumber <= 0) + { + PVR_DPF((PVR_DBG_ERROR, "PVRCore_Init: unable to get major number")); + + error = -EBUSY; + goto sys_deinit; + } + + PVR_TRACE(("PVRCore_Init: major device %d", AssignedMajorNumber)); + +#if defined(PVR_LDM_DEVICE_CLASS) + /* + * This code (using GPL symbols) facilitates automatic device + * node creation on platforms with udev (or similar). + */ + psPvrClass = class_create(THIS_MODULE, "pvr"); + + if (IS_ERR(psPvrClass)) + { + PVR_DPF((PVR_DBG_ERROR, "PVRCore_Init: unable to create class (%ld)", PTR_ERR(psPvrClass))); + error = -EBUSY; + goto unregister_device; + } + + psDev = device_create(psPvrClass, NULL, MKDEV(AssignedMajorNumber, 0), +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,26)) + NULL, +#endif /* (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,26)) */ + DEVNAME); + if (IS_ERR(psDev)) + { + PVR_DPF((PVR_DBG_ERROR, "PVRCore_Init: unable to create device (%ld)", PTR_ERR(psDev))); + error = -EBUSY; + goto destroy_class; + } +#endif /* defined(PVR_LDM_DEVICE_CLASS) */ +#endif /* !defined(SUPPORT_DRI_DRM) */ + + return 0; + +#if !defined(SUPPORT_DRI_DRM) +#if defined(PVR_LDM_DEVICE_CLASS) +destroy_class: + class_destroy(psPvrClass); +unregister_device: + unregister_chrdev((IMG_UINT)AssignedMajorNumber, DEVNAME); +#endif +sys_deinit: +#endif +#if defined(PVR_LDM_MODULE) +#if defined(PVR_LDM_PCI_MODULE) + pci_unregister_driver(&powervr_driver); +#endif + +#if defined (PVR_LDM_PLATFORM_MODULE) +#if defined(MODULE) && !defined(PVR_USE_PRE_REGISTERED_PLATFORM_DEV) + platform_device_unregister(&powervr_device); +#endif + platform_driver_unregister(&powervr_driver); +#endif + +#else /* defined(PVR_LDM_MODULE) */ + /* LDM drivers call SysDeinitialise during PVRSRVDriverRemove */ + { + SYS_DATA *psSysData; + + psSysData = SysAcquireDataNoCheck(); + if (psSysData != IMG_NULL) + { + (void) SysDeinitialise(psSysData); + } + } +#endif /* defined(PVR_LDM_MODULE) */ +init_failed: + PVRMMapCleanup(); + LinuxMMCleanup(); + LinuxBridgeDeInit(); + PVROSFuncDeInit(); + RemoveProcEntries(); + + return error; + +} /*PVRCore_Init*/ + + +/*! +***************************************************************************** + + @Function PVRCore_Cleanup + + @Description + + Remove the driver from the kernel. + + There's no way we can get out of being unloaded other than panicking; we + just do everything and plough on regardless of error. + + __exit places the function in a special memory section that the kernel frees + once the function has been run. Refer also to module_exit() macro call below. + + Note that the for LDM on MontaVista kernels, the positioning of the driver + de-registration is the opposite way around than would be suggested by the + registration case or the 2,6 kernel case. This is the correct way to do it + and the kernel panics if you change it. You have been warned. + + @input none + + @Return none + +*****************************************************************************/ +#if defined(SUPPORT_DRI_DRM) +void PVRCore_Cleanup(void) +#else +static void __exit PVRCore_Cleanup(void) +#endif +{ +#if !defined(PVR_LDM_MODULE) + SYS_DATA *psSysData; +#endif + PVR_TRACE(("PVRCore_Cleanup")); + +#if !defined(PVR_LDM_MODULE) + SysAcquireData(&psSysData); +#endif + +#if !defined(SUPPORT_DRI_DRM) + +#if defined(PVR_LDM_DEVICE_CLASS) + device_destroy(psPvrClass, MKDEV(AssignedMajorNumber, 0)); + class_destroy(psPvrClass); +#endif + +#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,22)) + if ( +#endif /* (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,22)) */ + unregister_chrdev((IMG_UINT)AssignedMajorNumber, DEVNAME) +#if !(LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,22)) + ; +#else /* (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,22)) */ + ) + { + PVR_DPF((PVR_DBG_ERROR," can't unregister device major %d", AssignedMajorNumber)); + } +#endif /* (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,22)) */ +#endif /* !defined(SUPPORT_DRI_DRM) */ + +#if defined(PVR_LDM_MODULE) + +#if defined(PVR_LDM_PCI_MODULE) + pci_unregister_driver(&powervr_driver); +#endif + +#if defined (PVR_LDM_PLATFORM_MODULE) +#if defined(MODULE) && !defined(PVR_USE_PRE_REGISTERED_PLATFORM_DEV) + platform_device_unregister(&powervr_device); +#endif + platform_driver_unregister(&powervr_driver); +#endif + +#else /* defined(PVR_LDM_MODULE) */ +#if defined(DEBUG) && defined(PVR_MANUAL_POWER_CONTROL) + if (gPVRPowerLevel != 0) + { + if (PVRSRVSetPowerStateKM(PVRSRV_SYS_POWER_STATE_D0) == PVRSRV_OK) + { + gPVRPowerLevel = 0; + } + } +#endif + /* LDM drivers call SysDeinitialise during PVRSRVDriverRemove */ + (void) SysDeinitialise(psSysData); +#endif /* defined(PVR_LDM_MODULE) */ + + PVRMMapCleanup(); + + LinuxMMCleanup(); + + LinuxBridgeDeInit(); + + PVROSFuncDeInit(); + + RemoveProcEntries(); + + PVR_TRACE(("PVRCore_Cleanup: unloading")); +} + +/* + * These macro calls define the initialisation and removal functions of the + * driver. Although they are prefixed `module_', they apply when compiling + * statically as well; in both cases they define the function the kernel will + * run to start/stop the driver. +*/ +#if !defined(SUPPORT_DRI_DRM) +module_init(PVRCore_Init); +module_exit(PVRCore_Cleanup); +#endif |