| /* -*- mode: c; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */ |
| /* vi: set ts=8 sw=8 sts=8: */ |
| /*************************************************************************/ /*! |
| @File |
| @Title PowerVR DRM PCI driver |
| @Codingstyle LinuxKernel |
| @Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved |
| @License MIT |
| |
| 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. |
| |
| 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 <drm/drmP.h> |
| #include <linux/module.h> |
| #include <linux/pci.h> |
| #include <linux/version.h> |
| |
| #include "module_common.h" |
| #include "pvr_drv.h" |
| #include "pvrmodule.h" |
| #include "sysinfo.h" |
| |
| static struct drm_driver pvr_drm_pci_driver; |
| |
| static int pvr_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| { |
| #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 18, 0)) |
| struct drm_device *ddev; |
| int ret; |
| |
| DRM_DEBUG_DRIVER("device %p\n", &pdev->dev); |
| |
| ddev = drm_dev_alloc(&pvr_drm_pci_driver, &pdev->dev); |
| #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 9, 0)) |
| if (IS_ERR(ddev)) |
| return PTR_ERR(ddev); |
| #else |
| if (!ddev) |
| return -ENOMEM; |
| #endif |
| |
| ret = pci_enable_device(pdev); |
| if (ret) |
| goto err_drm_dev_unref; |
| |
| ddev->pdev = pdev; |
| |
| /* |
| * drm_get_pci_dev calls sets the drvdata at this point, to ddev. |
| * We set the drvdata in the load callback, so there is no need |
| * to do it again here. The platform driver equivalent of |
| * drm_get_pci_dev, drm_platform_init, doesn't set the drvdata, |
| * which is why it is done in the load callback. |
| * |
| * The load callback, called from drm_dev_register, is deprecated, |
| * because of potential race conditions. Calling the function here, |
| * before calling drm_dev_register, avoids those potential races. |
| */ |
| BUG_ON(pvr_drm_pci_driver.load != NULL); |
| ret = pvr_drm_load(ddev, 0); |
| if (ret) |
| goto err_pci_dev_disable; |
| |
| ret = drm_dev_register(ddev, 0); |
| if (ret) |
| goto err_drm_dev_unload; |
| |
| #if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 11, 0)) |
| DRM_INFO("Initialized %s %d.%d.%d %s for %s on minor %d\n", |
| pvr_drm_pci_driver.name, |
| pvr_drm_pci_driver.major, |
| pvr_drm_pci_driver.minor, |
| pvr_drm_pci_driver.patchlevel, |
| pvr_drm_pci_driver.date, |
| pci_name(pdev), |
| ddev->primary->index); |
| #endif |
| return 0; |
| |
| err_drm_dev_unload: |
| pvr_drm_unload(ddev); |
| err_pci_dev_disable: |
| pci_disable_device(pdev); |
| err_drm_dev_unref: |
| drm_dev_unref(ddev); |
| return ret; |
| #else |
| DRM_DEBUG_DRIVER("device %p\n", &pdev->dev); |
| |
| return drm_get_pci_dev(pdev, ent, &pvr_drm_pci_driver); |
| #endif |
| } |
| |
| static void pvr_remove(struct pci_dev *pdev) |
| { |
| struct drm_device *ddev = pci_get_drvdata(pdev); |
| |
| DRM_DEBUG_DRIVER("device %p\n", &pdev->dev); |
| |
| #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 18, 0)) |
| drm_dev_unregister(ddev); |
| |
| /* The unload callback, called from drm_dev_unregister, is |
| * deprecated. Call the unload function directly. |
| */ |
| BUG_ON(pvr_drm_pci_driver.unload != NULL); |
| pvr_drm_unload(ddev); |
| |
| pci_disable_device(pdev); |
| |
| drm_dev_unref(ddev); |
| #else |
| drm_put_dev(ddev); |
| #endif |
| } |
| |
| static void pvr_shutdown(struct pci_dev *pdev) |
| { |
| struct drm_device *ddev = pci_get_drvdata(pdev); |
| struct pvr_drm_private *priv = ddev->dev_private; |
| |
| DRM_DEBUG_DRIVER("device %p\n", &pdev->dev); |
| |
| PVRSRVCommonDeviceShutdown(priv->dev_node); |
| } |
| |
| static const struct pci_device_id pvr_pci_ids[] = { |
| { PCI_DEVICE(SYS_RGX_DEV_VENDOR_ID, SYS_RGX_DEV_DEVICE_ID) }, |
| #if defined(SYS_RGX_DEV1_DEVICE_ID) |
| { PCI_DEVICE(SYS_RGX_DEV_VENDOR_ID, SYS_RGX_DEV1_DEVICE_ID) }, |
| #endif |
| { 0 } |
| }; |
| |
| MODULE_DEVICE_TABLE(pci, pvr_pci_ids); |
| |
| static struct pci_driver pvr_pci_driver = { |
| .name = DRVNAME, |
| .driver.pm = &pvr_pm_ops, |
| .id_table = pvr_pci_ids, |
| .probe = pvr_probe, |
| .remove = pvr_remove, |
| .shutdown = pvr_shutdown, |
| }; |
| |
| static int __init pvr_init(void) |
| { |
| int err; |
| |
| DRM_DEBUG_DRIVER("\n"); |
| |
| pvr_drm_pci_driver = pvr_drm_generic_driver; |
| #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 18, 0) && \ |
| LINUX_VERSION_CODE < KERNEL_VERSION(4, 14, 0)) |
| pvr_drm_pci_driver.set_busid = drm_pci_set_busid; |
| #endif |
| |
| err = PVRSRVCommonDriverInit(); |
| if (err) |
| return err; |
| |
| #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 18, 0)) |
| return pci_register_driver(&pvr_pci_driver); |
| #else |
| return drm_pci_init(&pvr_drm_pci_driver, &pvr_pci_driver); |
| #endif |
| } |
| |
| static void __exit pvr_exit(void) |
| { |
| DRM_DEBUG_DRIVER("\n"); |
| |
| #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 18, 0)) |
| pci_unregister_driver(&pvr_pci_driver); |
| #else |
| drm_pci_exit(&pvr_drm_pci_driver, &pvr_pci_driver); |
| #endif |
| PVRSRVCommonDriverDeinit(); |
| |
| DRM_DEBUG_DRIVER("done\n"); |
| } |
| |
| module_init(pvr_init); |
| module_exit(pvr_exit); |