509 lines
15 KiB
C
509 lines
15 KiB
C
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/**
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* Copyright (C) 2010-2011 ARM Limited. All rights reserved.
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* Copyright (C) 2011 STMicroelectronics R&D Limited. All rights reserved.
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*
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* This program is free software and is provided to you under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
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*
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* A copy of the licence is included with the program, and can also be obtained from Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/**
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* @file mali_kernel_linux.c
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* Implementation of the Linux device driver entrypoints
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*/
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#include <linux/module.h> /* kernel module definitions */
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#include <linux/fs.h> /* file system operations */
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#include <linux/cdev.h> /* character device definitions */
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#include <linux/mm.h> /* memory manager definitions */
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#include <asm/uaccess.h> /* user space access */
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#include <linux/device.h>
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#include <linux/proc_fs.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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/* the mali kernel subsystem types */
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#include "mali_kernel_subsystem.h"
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/* A memory subsystem always exists, so no need to conditionally include it */
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#include "mali_kernel_common.h"
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#include "mali_kernel_mem.h"
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#include "mali_kernel_session_manager.h"
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#include "mali_kernel_core.h"
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#include "mali_osk.h"
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#include "mali_kernel_linux.h"
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#include "mali_ukk.h"
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#include "mali_kernel_ioctl.h"
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#include "mali_ukk_wrappers.h"
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#include "mali_kernel_pm.h"
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#include "mali_kernel_sysfs.h"
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/* */
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#include "mali_kernel_license.h"
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/* Module parameter to control log level */
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int mali_debug_level = 2;
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module_param(mali_debug_level, int, S_IRUSR | S_IWUSR | S_IWGRP | S_IRGRP | S_IROTH); /* rw-rw-r-- */
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MODULE_PARM_DESC(mali_debug_level, "Higher number, more dmesg output");
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/* By default the module uses any available major, but it's possible to set it at load time to a specific number */
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int mali_major = 0;
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module_param(mali_major, int, S_IRUGO); /* r--r--r-- */
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MODULE_PARM_DESC(mali_major, "Device major number");
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int mali_benchmark = 0;
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module_param(mali_benchmark, int, S_IRUSR | S_IWUSR | S_IWGRP | S_IRGRP | S_IROTH); /* rw-rw-r-- */
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MODULE_PARM_DESC(mali_benchmark, "Bypass Mali hardware when non-zero");
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extern int mali_hang_check_interval;
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module_param(mali_hang_check_interval, int, S_IRUSR | S_IWUSR | S_IWGRP | S_IRGRP | S_IROTH);
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MODULE_PARM_DESC(mali_hang_check_interval, "Interval at which to check for progress after the hw watchdog has been triggered");
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extern int mali_max_job_runtime;
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module_param(mali_max_job_runtime, int, S_IRUSR | S_IWUSR | S_IWGRP | S_IRGRP | S_IROTH);
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MODULE_PARM_DESC(mali_max_job_runtime, "Maximum allowed job runtime in msecs.\nJobs will be killed after this no matter what");
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#if defined(USING_MALI400_L2_CACHE)
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extern int mali_l2_max_reads;
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module_param(mali_l2_max_reads, int, S_IRUSR | S_IRGRP | S_IROTH);
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MODULE_PARM_DESC(mali_l2_max_reads, "Maximum reads for Mali L2 cache");
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#endif
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static char mali_dev_name[] = "mali"; /* should be const, but the functions we call requires non-cost */
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/* the mali device */
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static struct mali_dev device;
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/* uncached remapped memory, for an STBus uncached write barrier */
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struct page *stbus_barrier_system_page;
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volatile int *stbus_system_memory_barrier;
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/*
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* probed platform device pointer, note this is not static as we need access
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* to it in the resource code.
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*/
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struct platform_device *mali_platform_device;
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static int mali_open(struct inode *inode, struct file *filp);
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static int mali_release(struct inode *inode, struct file *filp);
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#ifdef HAVE_UNLOCKED_IOCTL
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static long mali_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
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#else
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static int mali_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
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#endif
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static int mali_mmap(struct file * filp, struct vm_area_struct * vma);
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/* Linux char file operations provided by the Mali module */
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struct file_operations mali_fops =
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{
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.owner = THIS_MODULE,
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.open = mali_open,
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.release = mali_release,
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#ifdef HAVE_UNLOCKED_IOCTL
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.unlocked_ioctl = mali_ioctl,
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#else
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.ioctl = mali_ioctl,
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#endif
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.mmap = mali_mmap
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};
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int mali_driver_init(void)
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{
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int err;
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u32 phys;
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stbus_barrier_system_page = alloc_pages(GFP_HIGHUSER | __GFP_ZERO | __GFP_NORETRY | __GFP_NOWARN, 1 );
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if(NULL == stbus_barrier_system_page)
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return -ENOMEM;
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#if defined(__sh__)
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SetPageReserved(stbus_barrier_system_page);
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#endif
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phys = page_to_phys( stbus_barrier_system_page );
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stbus_system_memory_barrier = (int *)ioremap_nocache(phys,sizeof(int));
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if(NULL == stbus_system_memory_barrier)
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{
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__free_pages(stbus_barrier_system_page,1);
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return -ENOMEM;
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}
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*stbus_system_memory_barrier = 0;
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#if USING_MALI_PMM
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#if MALI_LICENSE_IS_GPL
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err = _mali_dev_platform_register();
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if (err)
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{
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__free_pages(stbus_barrier_system_page,1);
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return err;
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}
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#endif
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#endif
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err = mali_kernel_constructor();
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if (_MALI_OSK_ERR_OK != err)
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{
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MALI_PRINT(("Failed to initialize driver (error %d)\n", err));
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return -EFAULT;
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}
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return 0;
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}
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void mali_driver_exit(void)
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{
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#if USING_MALI_PMM
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malipmm_force_powerup();
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#endif
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mali_kernel_destructor();
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if(NULL != stbus_system_memory_barrier)
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iounmap((void*)stbus_system_memory_barrier);
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if(NULL != stbus_barrier_system_page)
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{
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#if defined(__sh__)
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ClearPageReserved(stbus_barrier_system_page);
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#endif
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__free_pages(stbus_barrier_system_page,1);
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}
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#if USING_MALI_PMM
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malipmm_force_powerdown();
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#endif
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#if USING_MALI_PMM
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#if MALI_LICENSE_IS_GPL
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_mali_dev_platform_unregister();
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#endif
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#endif
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}
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/* called from _mali_osk_init */
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int initialize_kernel_device(void)
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{
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int err;
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dev_t dev = 0;
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if (0 == mali_major)
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{
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/* auto select a major */
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err = alloc_chrdev_region(&dev, 0/*first minor*/, 1/*count*/, mali_dev_name);
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mali_major = MAJOR(dev);
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}
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else
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{
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/* use load time defined major number */
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dev = MKDEV(mali_major, 0);
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err = register_chrdev_region(dev, 1/*count*/, mali_dev_name);
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}
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if (err)
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{
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goto init_chrdev_err;
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}
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memset(&device, 0, sizeof(device));
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/* initialize our char dev data */
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cdev_init(&device.cdev, &mali_fops);
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device.cdev.owner = THIS_MODULE;
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device.cdev.ops = &mali_fops;
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kobject_set_name(&(device.cdev.kobj), mali_dev_name);
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/* register char dev with the kernel */
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err = cdev_add(&device.cdev, dev, 1/*count*/);
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if (err)
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{
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goto init_cdev_err;
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}
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err = mali_sysfs_register(&device, dev, mali_dev_name);
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if (err)
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{
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goto init_sysfs_err;
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}
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/* Success! */
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return 0;
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init_sysfs_err:
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cdev_del(&device.cdev);
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init_cdev_err:
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unregister_chrdev_region(dev, 1/*count*/);
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init_chrdev_err:
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return err;
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}
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/* called from _mali_osk_term */
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void terminate_kernel_device(void)
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{
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dev_t dev = MKDEV(mali_major, 0);
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mali_sysfs_unregister(&device, dev, mali_dev_name);
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/* unregister char device */
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cdev_del(&device.cdev);
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/* free major */
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unregister_chrdev_region(dev, 1/*count*/);
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return;
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}
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/** @note munmap handler is done by vma close handler */
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static int mali_mmap(struct file * filp, struct vm_area_struct * vma)
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{
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struct mali_session_data * session_data;
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_mali_uk_mem_mmap_s args = {0, };
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session_data = (struct mali_session_data *)filp->private_data;
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if (NULL == session_data)
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{
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MALI_PRINT_ERROR(("mmap called without any session data available\n"));
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return -EFAULT;
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}
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MALI_DEBUG_PRINT(3, ("MMap() handler: start=0x%08X, phys=0x%08X, size=0x%08X\n", (unsigned int)vma->vm_start, (unsigned int)(vma->vm_pgoff << PAGE_SHIFT), (unsigned int)(vma->vm_end - vma->vm_start)) );
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/* Re-pack the arguments that mmap() packed for us */
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args.ctx = session_data;
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args.phys_addr = vma->vm_pgoff << PAGE_SHIFT;
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args.size = vma->vm_end - vma->vm_start;
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args.ukk_private = vma;
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/* Call the common mmap handler */
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MALI_CHECK(_MALI_OSK_ERR_OK ==_mali_ukk_mem_mmap( &args ), -EFAULT);
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return 0;
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}
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static int mali_open(struct inode *inode, struct file *filp)
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{
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struct mali_session_data * session_data;
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_mali_osk_errcode_t err;
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/* input validation */
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if (0 != MINOR(inode->i_rdev)) return -ENODEV;
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/* allocated struct to track this session */
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err = _mali_ukk_open((void **)&session_data);
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if (_MALI_OSK_ERR_OK != err) return map_errcode(err);
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/* initialize file pointer */
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filp->f_pos = 0;
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/* link in our session data */
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filp->private_data = (void*)session_data;
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return 0;
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}
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static int mali_release(struct inode *inode, struct file *filp)
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{
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_mali_osk_errcode_t err;
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/* input validation */
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if (0 != MINOR(inode->i_rdev)) return -ENODEV;
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err = _mali_ukk_close((void **)&filp->private_data);
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if (_MALI_OSK_ERR_OK != err) return map_errcode(err);
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return 0;
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}
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int map_errcode( _mali_osk_errcode_t err )
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{
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switch(err)
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{
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case _MALI_OSK_ERR_OK : return 0;
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case _MALI_OSK_ERR_FAULT: return -EFAULT;
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case _MALI_OSK_ERR_INVALID_FUNC: return -ENOTTY;
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case _MALI_OSK_ERR_INVALID_ARGS: return -EINVAL;
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case _MALI_OSK_ERR_NOMEM: return -ENOMEM;
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case _MALI_OSK_ERR_TIMEOUT: return -ETIMEDOUT;
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case _MALI_OSK_ERR_RESTARTSYSCALL: return -ERESTARTSYS;
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case _MALI_OSK_ERR_ITEM_NOT_FOUND: return -ENOENT;
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default: return -EFAULT;
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}
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}
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#ifdef HAVE_UNLOCKED_IOCTL
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static long mali_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
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#else
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static int mali_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg)
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#endif
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{
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int err;
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struct mali_session_data *session_data;
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#ifndef HAVE_UNLOCKED_IOCTL
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/* inode not used */
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(void)inode;
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#endif
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MALI_DEBUG_PRINT(7, ("Ioctl received 0x%08X 0x%08lX\n", cmd, arg));
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session_data = (struct mali_session_data *)filp->private_data;
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if (NULL == session_data)
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{
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MALI_DEBUG_PRINT(7, ("filp->private_data was NULL\n"));
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return -ENOTTY;
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}
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if (NULL == (void *)arg)
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{
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MALI_DEBUG_PRINT(7, ("arg was NULL\n"));
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return -ENOTTY;
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}
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|
|
switch(cmd)
|
||
|
|
{
|
||
|
|
case MALI_IOC_GET_SYSTEM_INFO_SIZE:
|
||
|
|
err = get_system_info_size_wrapper(session_data, (_mali_uk_get_system_info_size_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_GET_SYSTEM_INFO:
|
||
|
|
err = get_system_info_wrapper(session_data, (_mali_uk_get_system_info_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_WAIT_FOR_NOTIFICATION:
|
||
|
|
err = wait_for_notification_wrapper(session_data, (_mali_uk_wait_for_notification_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_GET_API_VERSION:
|
||
|
|
err = get_api_version_wrapper(session_data, (_mali_uk_get_api_version_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_POST_NOTIFICATION:
|
||
|
|
err = post_notification_wrapper(session_data, (_mali_uk_post_notification_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
#if MALI_TIMELINE_PROFILING_ENABLED
|
||
|
|
case MALI_IOC_PROFILING_START:
|
||
|
|
err = profiling_start_wrapper(session_data, (_mali_uk_profiling_start_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_PROFILING_ADD_EVENT:
|
||
|
|
err = profiling_add_event_wrapper(session_data, (_mali_uk_profiling_add_event_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_PROFILING_STOP:
|
||
|
|
err = profiling_stop_wrapper(session_data, (_mali_uk_profiling_stop_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_PROFILING_GET_EVENT:
|
||
|
|
err = profiling_get_event_wrapper(session_data, (_mali_uk_profiling_get_event_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_PROFILING_CLEAR:
|
||
|
|
err = profiling_clear_wrapper(session_data, (_mali_uk_profiling_clear_s __user *)arg);
|
||
|
|
break;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
case MALI_IOC_MEM_INIT:
|
||
|
|
err = mem_init_wrapper(session_data, (_mali_uk_init_mem_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_MEM_TERM:
|
||
|
|
err = mem_term_wrapper(session_data, (_mali_uk_term_mem_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_MEM_MAP_EXT:
|
||
|
|
err = mem_map_ext_wrapper(session_data, (_mali_uk_map_external_mem_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_MEM_UNMAP_EXT:
|
||
|
|
err = mem_unmap_ext_wrapper(session_data, (_mali_uk_unmap_external_mem_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_MEM_QUERY_MMU_PAGE_TABLE_DUMP_SIZE:
|
||
|
|
err = mem_query_mmu_page_table_dump_size_wrapper(session_data, (_mali_uk_query_mmu_page_table_dump_size_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_MEM_DUMP_MMU_PAGE_TABLE:
|
||
|
|
err = mem_dump_mmu_page_table_wrapper(session_data, (_mali_uk_dump_mmu_page_table_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_MEM_GET_BIG_BLOCK:
|
||
|
|
err = mem_get_big_block_wrapper(filp, (_mali_uk_get_big_block_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_MEM_FREE_BIG_BLOCK:
|
||
|
|
err = mem_free_big_block_wrapper(session_data, (_mali_uk_free_big_block_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
#if MALI_USE_UNIFIED_MEMORY_PROVIDER != 0
|
||
|
|
|
||
|
|
case MALI_IOC_MEM_ATTACH_UMP:
|
||
|
|
err = mem_attach_ump_wrapper(session_data, (_mali_uk_attach_ump_mem_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_MEM_RELEASE_UMP:
|
||
|
|
err = mem_release_ump_wrapper(session_data, (_mali_uk_release_ump_mem_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
case MALI_IOC_MEM_ATTACH_UMP:
|
||
|
|
case MALI_IOC_MEM_RELEASE_UMP: /* FALL-THROUGH */
|
||
|
|
MALI_DEBUG_PRINT(2, ("UMP not supported\n"));
|
||
|
|
err = -ENOTTY;
|
||
|
|
break;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
case MALI_IOC_PP_START_JOB:
|
||
|
|
err = pp_start_job_wrapper(session_data, (_mali_uk_pp_start_job_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_PP_ABORT_JOB:
|
||
|
|
err = pp_abort_job_wrapper(session_data, (_mali_uk_pp_abort_job_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_PP_NUMBER_OF_CORES_GET:
|
||
|
|
err = pp_get_number_of_cores_wrapper(session_data, (_mali_uk_get_pp_number_of_cores_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_PP_CORE_VERSION_GET:
|
||
|
|
err = pp_get_core_version_wrapper(session_data, (_mali_uk_get_pp_core_version_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_GP2_START_JOB:
|
||
|
|
err = gp_start_job_wrapper(session_data, (_mali_uk_gp_start_job_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_GP2_ABORT_JOB:
|
||
|
|
err = gp_abort_job_wrapper(session_data, (_mali_uk_gp_abort_job_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_GP2_NUMBER_OF_CORES_GET:
|
||
|
|
err = gp_get_number_of_cores_wrapper(session_data, (_mali_uk_get_gp_number_of_cores_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_GP2_CORE_VERSION_GET:
|
||
|
|
err = gp_get_core_version_wrapper(session_data, (_mali_uk_get_gp_core_version_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_GP2_SUSPEND_RESPONSE:
|
||
|
|
err = gp_suspend_response_wrapper(session_data, (_mali_uk_gp_suspend_response_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MALI_IOC_VSYNC_EVENT_REPORT:
|
||
|
|
err = vsync_event_report_wrapper(session_data, (_mali_uk_vsync_event_report_s __user *)arg);
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
MALI_DEBUG_PRINT(2, ("No handler for ioctl 0x%08X 0x%08lX\n", cmd, arg));
|
||
|
|
err = -ENOTTY;
|
||
|
|
};
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
module_init(mali_driver_init);
|
||
|
|
module_exit(mali_driver_exit);
|
||
|
|
|
||
|
|
MODULE_LICENSE(MALI_KERNEL_LINUX_LICENSE);
|
||
|
|
MODULE_AUTHOR("ARM Ltd.");
|
||
|
|
MODULE_VERSION(SVN_REV_STRING);
|