diff options
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/tidspbridge/rmgr/drv_interface.c | 313 | ||||
| -rw-r--r-- | drivers/staging/tidspbridge/rmgr/drv_interface.h | 28 |
2 files changed, 155 insertions, 186 deletions
diff --git a/drivers/staging/tidspbridge/rmgr/drv_interface.c b/drivers/staging/tidspbridge/rmgr/drv_interface.c index 85f6e8e404eb..5ea753cb7fcd 100644 --- a/drivers/staging/tidspbridge/rmgr/drv_interface.c +++ b/drivers/staging/tidspbridge/rmgr/drv_interface.c @@ -48,9 +48,6 @@ /* ----------------------------------- Resource Manager */ #include <dspbridge/pwr.h> -/* ----------------------------------- This */ -#include <drv_interface.h> - #include <dspbridge/resourcecleanup.h> #include <dspbridge/chnl.h> #include <dspbridge/proc.h> @@ -133,6 +130,161 @@ MODULE_VERSION(DSPBRIDGE_VERSION); static char *driver_name = DRIVER_NAME; +/* + * This function is called when an application opens handle to the + * bridge driver. + */ +static int bridge_open(struct inode *ip, struct file *filp) +{ + int status = 0; + struct process_context *pr_ctxt = NULL; + + /* + * Allocate a new process context and insert it into global + * process context list. + */ + +#ifdef CONFIG_TIDSPBRIDGE_RECOVERY + if (recover) { + if (filp->f_flags & O_NONBLOCK || + wait_for_completion_interruptible(&bridge_open_comp)) + return -EBUSY; + } +#endif + pr_ctxt = kzalloc(sizeof(struct process_context), GFP_KERNEL); + if (pr_ctxt) { + pr_ctxt->res_state = PROC_RES_ALLOCATED; + spin_lock_init(&pr_ctxt->dmm_map_lock); + INIT_LIST_HEAD(&pr_ctxt->dmm_map_list); + spin_lock_init(&pr_ctxt->dmm_rsv_lock); + INIT_LIST_HEAD(&pr_ctxt->dmm_rsv_list); + + pr_ctxt->node_id = kzalloc(sizeof(struct idr), GFP_KERNEL); + if (pr_ctxt->node_id) { + idr_init(pr_ctxt->node_id); + } else { + status = -ENOMEM; + goto err; + } + + pr_ctxt->stream_id = kzalloc(sizeof(struct idr), GFP_KERNEL); + if (pr_ctxt->stream_id) + idr_init(pr_ctxt->stream_id); + else + status = -ENOMEM; + } else { + status = -ENOMEM; + } +err: + filp->private_data = pr_ctxt; +#ifdef CONFIG_TIDSPBRIDGE_RECOVERY + if (!status) + atomic_inc(&bridge_cref); +#endif + return status; +} + +/* + * This function is called when an application closes handle to the bridge + * driver. + */ +static int bridge_release(struct inode *ip, struct file *filp) +{ + int status = 0; + struct process_context *pr_ctxt; + + if (!filp->private_data) { + status = -EIO; + goto err; + } + + pr_ctxt = filp->private_data; + flush_signals(current); + drv_remove_all_resources(pr_ctxt); + proc_detach(pr_ctxt); + kfree(pr_ctxt); + + filp->private_data = NULL; + +err: +#ifdef CONFIG_TIDSPBRIDGE_RECOVERY + if (!atomic_dec_return(&bridge_cref)) + complete(&bridge_comp); +#endif + return status; +} + +/* This function provides IO interface to the bridge driver. */ +static long bridge_ioctl(struct file *filp, unsigned int code, + unsigned long args) +{ + int status; + u32 retval = 0; + union trapped_args buf_in; + + DBC_REQUIRE(filp != NULL); +#ifdef CONFIG_TIDSPBRIDGE_RECOVERY + if (recover) { + status = -EIO; + goto err; + } +#endif +#ifdef CONFIG_PM + status = omap34_xxbridge_suspend_lockout(&bridge_suspend_data, filp); + if (status != 0) + return status; +#endif + + if (!filp->private_data) { + status = -EIO; + goto err; + } + + status = copy_from_user(&buf_in, (union trapped_args *)args, + sizeof(union trapped_args)); + + if (!status) { + status = api_call_dev_ioctl(code, &buf_in, &retval, + filp->private_data); + + if (!status) { + status = retval; + } else { + dev_dbg(bridge, "%s: IOCTL Failed, code: 0x%x " + "status 0x%x\n", __func__, code, status); + status = -1; + } + + } + +err: + return status; +} + +/* This function maps kernel space memory to user space memory. */ +static int bridge_mmap(struct file *filp, struct vm_area_struct *vma) +{ + u32 offset = vma->vm_pgoff << PAGE_SHIFT; + u32 status; + + DBC_ASSERT(vma->vm_start < vma->vm_end); + + vma->vm_flags |= VM_RESERVED | VM_IO; + vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + + dev_dbg(bridge, "%s: vm filp %p offset %x start %lx end %lx page_prot " + "%lx flags %lx\n", __func__, filp, offset, + vma->vm_start, vma->vm_end, vma->vm_page_prot, vma->vm_flags); + + status = remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, + vma->vm_end - vma->vm_start, + vma->vm_page_prot); + if (status != 0) + status = -EAGAIN; + + return status; +} + static const struct file_operations bridge_fops = { .open = bridge_open, .release = bridge_release, @@ -477,161 +629,6 @@ static void __exit bridge_exit(void) platform_driver_unregister(&bridge_driver); } -/* - * This function is called when an application opens handle to the - * bridge driver. - */ -static int bridge_open(struct inode *ip, struct file *filp) -{ - int status = 0; - struct process_context *pr_ctxt = NULL; - - /* - * Allocate a new process context and insert it into global - * process context list. - */ - -#ifdef CONFIG_TIDSPBRIDGE_RECOVERY - if (recover) { - if (filp->f_flags & O_NONBLOCK || - wait_for_completion_interruptible(&bridge_open_comp)) - return -EBUSY; - } -#endif - pr_ctxt = kzalloc(sizeof(struct process_context), GFP_KERNEL); - if (pr_ctxt) { - pr_ctxt->res_state = PROC_RES_ALLOCATED; - spin_lock_init(&pr_ctxt->dmm_map_lock); - INIT_LIST_HEAD(&pr_ctxt->dmm_map_list); - spin_lock_init(&pr_ctxt->dmm_rsv_lock); - INIT_LIST_HEAD(&pr_ctxt->dmm_rsv_list); - - pr_ctxt->node_id = kzalloc(sizeof(struct idr), GFP_KERNEL); - if (pr_ctxt->node_id) { - idr_init(pr_ctxt->node_id); - } else { - status = -ENOMEM; - goto err; - } - - pr_ctxt->stream_id = kzalloc(sizeof(struct idr), GFP_KERNEL); - if (pr_ctxt->stream_id) - idr_init(pr_ctxt->stream_id); - else - status = -ENOMEM; - } else { - status = -ENOMEM; - } -err: - filp->private_data = pr_ctxt; -#ifdef CONFIG_TIDSPBRIDGE_RECOVERY - if (!status) - atomic_inc(&bridge_cref); -#endif - return status; -} - -/* - * This function is called when an application closes handle to the bridge - * driver. - */ -static int bridge_release(struct inode *ip, struct file *filp) -{ - int status = 0; - struct process_context *pr_ctxt; - - if (!filp->private_data) { - status = -EIO; - goto err; - } - - pr_ctxt = filp->private_data; - flush_signals(current); - drv_remove_all_resources(pr_ctxt); - proc_detach(pr_ctxt); - kfree(pr_ctxt); - - filp->private_data = NULL; - -err: -#ifdef CONFIG_TIDSPBRIDGE_RECOVERY - if (!atomic_dec_return(&bridge_cref)) - complete(&bridge_comp); -#endif - return status; -} - -/* This function provides IO interface to the bridge driver. */ -static long bridge_ioctl(struct file *filp, unsigned int code, - unsigned long args) -{ - int status; - u32 retval = 0; - union trapped_args buf_in; - - DBC_REQUIRE(filp != NULL); -#ifdef CONFIG_TIDSPBRIDGE_RECOVERY - if (recover) { - status = -EIO; - goto err; - } -#endif -#ifdef CONFIG_PM - status = omap34_xxbridge_suspend_lockout(&bridge_suspend_data, filp); - if (status != 0) - return status; -#endif - - if (!filp->private_data) { - status = -EIO; - goto err; - } - - status = copy_from_user(&buf_in, (union trapped_args *)args, - sizeof(union trapped_args)); - - if (!status) { - status = api_call_dev_ioctl(code, &buf_in, &retval, - filp->private_data); - - if (!status) { - status = retval; - } else { - dev_dbg(bridge, "%s: IOCTL Failed, code: 0x%x " - "status 0x%x\n", __func__, code, status); - status = -1; - } - - } - -err: - return status; -} - -/* This function maps kernel space memory to user space memory. */ -static int bridge_mmap(struct file *filp, struct vm_area_struct *vma) -{ - u32 offset = vma->vm_pgoff << PAGE_SHIFT; - u32 status; - - DBC_ASSERT(vma->vm_start < vma->vm_end); - - vma->vm_flags |= VM_RESERVED | VM_IO; - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - - dev_dbg(bridge, "%s: vm filp %p offset %x start %lx end %lx page_prot " - "%lx flags %lx\n", __func__, filp, offset, - vma->vm_start, vma->vm_end, vma->vm_page_prot, vma->vm_flags); - - status = remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, - vma->vm_end - vma->vm_start, - vma->vm_page_prot); - if (status != 0) - status = -EAGAIN; - - return status; -} - /* To remove all process resources before removing the process from the * process context list */ int drv_remove_all_resources(void *process_ctxt) diff --git a/drivers/staging/tidspbridge/rmgr/drv_interface.h b/drivers/staging/tidspbridge/rmgr/drv_interface.h deleted file mode 100644 index ab070602adc2..000000000000 --- a/drivers/staging/tidspbridge/rmgr/drv_interface.h +++ /dev/null @@ -1,28 +0,0 @@ -/* - * drv_interface.h - * - * DSP-BIOS Bridge driver support functions for TI OMAP processors. - * - * Copyright (C) 2005-2006 Texas Instruments, Inc. - * - * This package is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#ifndef _DRV_INTERFACE_H_ -#define _DRV_INTERFACE_H_ - -/* Prototypes for all functions in this bridge */ -static int __init bridge_init(void); /* Initialize bridge */ -static void __exit bridge_exit(void); /* Opposite of initialize */ -static int bridge_open(struct inode *ip, struct file *filp); /* Open */ -static int bridge_release(struct inode *ip, struct file *filp); /* Release */ -static long bridge_ioctl(struct file *filp, unsigned int code, - unsigned long args); -static int bridge_mmap(struct file *filp, struct vm_area_struct *vma); -#endif /* ifndef _DRV_INTERFACE_H_ */ |