diff options
Diffstat (limited to 'drivers/dsp/syslink/multicore_ipc/listmp_ioctl.c')
| -rw-r--r-- | drivers/dsp/syslink/multicore_ipc/listmp_ioctl.c | 657 |
1 files changed, 657 insertions, 0 deletions
diff --git a/drivers/dsp/syslink/multicore_ipc/listmp_ioctl.c b/drivers/dsp/syslink/multicore_ipc/listmp_ioctl.c new file mode 100644 index 00000000000..d3d266987af --- /dev/null +++ b/drivers/dsp/syslink/multicore_ipc/listmp_ioctl.c @@ -0,0 +1,657 @@ +/* + * listmp_ioctl.c + * + * This file implements all the ioctl operations required on the + * listmp module. + * + * Copyright (C) 2008-2009 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. + */ + +/* Standard headers */ +#include <linux/types.h> + +/* Linux headers */ +#include <linux/uaccess.h> +#include <linux/bug.h> +#include <linux/fs.h> +#include <linux/mm.h> +#include <linux/slab.h> + +/* Module Headers */ +#include <ipc.h> +#include <listmp.h> +#include <_listmp.h> +#include <listmp_ioctl.h> +#include <sharedregion.h> + +static struct resource_info *find_listmp_resource( + struct ipc_process_context *pr_ctxt, + unsigned int cmd, + struct listmp_cmd_args *cargs) +{ + struct resource_info *info = NULL; + bool found = false; + + spin_lock(&pr_ctxt->res_lock); + + list_for_each_entry(info, &pr_ctxt->resources, res) { + struct listmp_cmd_args *args = + (struct listmp_cmd_args *)info->data; + void *handle = NULL; + void *thandle = NULL; + if (cargs != NULL && args != NULL) { + handle = args->args.delete_instance.listmp_handle; + thandle = cargs->args.delete_instance.listmp_handle; + } + if (info->cmd == cmd) { + switch (cmd) { + case CMD_LISTMP_DELETE: + { + if (thandle == handle) + found = true; + break; + } + case CMD_LISTMP_DESTROY: + { + found = true; + break; + } + } + if (found == true) + break; + } + } + + spin_unlock(&pr_ctxt->res_lock); + + if (found == false) + info = NULL; + + return info; +} + +/* ioctl interface to listmp_get_config function */ +static inline int listmp_ioctl_get_config(struct listmp_cmd_args *cargs) +{ + s32 retval = 0; + unsigned long size; + struct listmp_config config; + + listmp_get_config(&config); + size = copy_to_user((void __user *)cargs->args.get_config.config, + &config, sizeof(struct listmp_config)); + if (size) { + retval = -EFAULT; + goto exit; + } + + cargs->api_status = 0; +exit: + return retval; +} + +/* ioctl interface to listmp_setup function */ +static inline int listmp_ioctl_setup(struct listmp_cmd_args *cargs) +{ + s32 retval = 0; + unsigned long size; + struct listmp_config config; + + size = copy_from_user(&config, (void __user *)cargs->args.setup.config, + sizeof(struct listmp_config)); + if (size) { + retval = -EFAULT; + goto exit; + } + + cargs->api_status = listmp_setup(&config); + +exit: + return retval; +} + +/* ioctl interface to listmp_destroy function */ +static inline int listmp_ioctl_destroy(struct listmp_cmd_args *cargs) +{ + cargs->api_status = listmp_destroy(); + return 0; +} + +/* ioctl interface to listmp_params_init function */ +static inline int listmp_ioctl_params_init(struct listmp_cmd_args *cargs) +{ + s32 retval = 0; + unsigned long size; + struct listmp_params params; + + size = copy_from_user(¶ms, + (void __user *)cargs->args.params_init.params, + sizeof(struct listmp_params)); + if (size) { + retval = -EFAULT; + goto exit; + } + + listmp_params_init(¶ms); + size = copy_to_user((void __user *)cargs->args.params_init.params, + ¶ms, sizeof(struct listmp_params)); + if (size) { + retval = -EFAULT; + goto exit; + } + + cargs->api_status = 0; + +exit: + return retval; +} + +/* ioctl interface to listmp_create function */ +static inline int listmp_ioctl_create(struct listmp_cmd_args *cargs) +{ + s32 retval = 0; + unsigned long size; + struct listmp_params params; + + size = copy_from_user(¶ms, (void __user *)cargs->args.create.params, + sizeof(struct listmp_params)); + if (size) { + retval = -EFAULT; + goto exit; + } + + /* Allocate memory for the name */ + if (cargs->args.create.name_len > 0) { + params.name = kmalloc(cargs->args.create.name_len, GFP_KERNEL); + if (params.name == NULL) { + retval = -ENOMEM; + goto exit; + } + /* Copy the name */ + size = copy_from_user(params.name, + (void __user *)cargs->args.create.params->name, + cargs->args.create.name_len); + if (size) { + retval = -EFAULT; + goto free_name; + } + } + + params.shared_addr = sharedregion_get_ptr( + (u32 *)cargs->args.create.shared_addr_srptr); + + /* Update gate in params. */ + params.gatemp_handle = cargs->args.create.knl_gate; + cargs->args.create.listmp_handle = listmp_create(¶ms); + + size = copy_to_user((void __user *)cargs->args.create.params, ¶ms, + sizeof(struct listmp_params)); + if (!size) + goto free_name; + + /* Error copying, so delete the handle */ + retval = -EFAULT; + if (cargs->args.create.listmp_handle) + listmp_delete(&cargs->args.create.listmp_handle); + +free_name: + if (cargs->args.create.name_len > 0) + kfree(params.name); + + cargs->api_status = 0; +exit: + return retval; +} + +/* ioctl interface to listmp_delete function */ +static inline int listmp_ioctl_delete(struct listmp_cmd_args *cargs) +{ + cargs->api_status = listmp_delete( + &(cargs->args.delete_instance.listmp_handle)); + return 0; +} + +/* ioctl interface to listmp_open function */ +static inline int listmp_ioctl_open(struct listmp_cmd_args *cargs) +{ + s32 retval = 0; + unsigned long size; + char *name = NULL; + void *listmp_handle = NULL; + + if (cargs->args.open.name_len > 0) { + name = kmalloc(cargs->args.open.name_len, GFP_KERNEL); + if (name == NULL) { + retval = -ENOMEM; + goto exit; + } + /* Copy the name */ + size = copy_from_user(name, + (void __user *)cargs->args.open.name, + cargs->args.open.name_len); + if (size) { + retval = -EFAULT; + goto free_name; + } + } + + /* Update gate in params. */ + cargs->api_status = listmp_open(name, &listmp_handle); + cargs->args.open.listmp_handle = listmp_handle; + +free_name: + if (cargs->args.open.name_len > 0) + kfree(name); +exit: + return retval; +} + +/* ioctl interface to listmp_open_by_addr function */ +static inline int listmp_ioctl_open_by_addr(struct listmp_cmd_args *cargs) +{ + s32 retval = 0; + void *listmp_handle = NULL; + void *shared_addr = NULL; + + /* For open_by_addr, the shared_add_srptr may be invalid */ + if (cargs->args.open_by_addr.shared_addr_srptr != \ + (u32)SHAREDREGION_INVALIDSRPTR) { + shared_addr = sharedregion_get_ptr((u32 *) + cargs->args.open_by_addr.shared_addr_srptr); + } + + /* Update gate in params. */ + cargs->api_status = listmp_open_by_addr(shared_addr, &listmp_handle); + cargs->args.open_by_addr.listmp_handle = listmp_handle; + + return retval; +} + +/* ioctl interface to listmp_close function */ +static inline int listmp_ioctl_close(struct listmp_cmd_args *cargs) +{ + cargs->api_status = listmp_close(&cargs->args.close.listmp_handle); + return 0; +} + +/* ioctl interface to listmp_empty function */ +static inline int listmp_ioctl_isempty(struct listmp_cmd_args *cargs) +{ + cargs->args.is_empty.is_empty = \ + listmp_empty(cargs->args.is_empty.listmp_handle); + cargs->api_status = 0; + return 0; +} + +/* ioctl interface to listmp_get_head function */ +static inline int listmp_ioctl_get_head(struct listmp_cmd_args *cargs) +{ + struct listmp_elem *elem; + u32 *elem_srptr = SHAREDREGION_INVALIDSRPTR; + int index; + + cargs->api_status = LISTMP_E_FAIL; + + elem = listmp_get_head(cargs->args.get_head.listmp_handle); + if (unlikely(elem == NULL)) + goto exit; + + index = sharedregion_get_id(elem); + if (unlikely(index < 0)) + goto exit; + + elem_srptr = sharedregion_get_srptr((void *)elem, index); + cargs->api_status = 0; + +exit: + cargs->args.get_head.elem_srptr = elem_srptr; + return 0; +} + +/* ioctl interface to listmp_get_tail function */ +static inline int listmp_ioctl_get_tail(struct listmp_cmd_args *cargs) +{ + struct listmp_elem *elem; + u32 *elem_srptr = SHAREDREGION_INVALIDSRPTR; + int index; + + cargs->api_status = LISTMP_E_FAIL; + + elem = listmp_get_tail(cargs->args.get_tail.listmp_handle); + if (unlikely(elem == NULL)) + goto exit; + + index = sharedregion_get_id(elem); + if (unlikely(index < 0)) + goto exit; + + elem_srptr = sharedregion_get_srptr((void *)elem, index); + cargs->api_status = 0; + +exit: + cargs->args.get_tail.elem_srptr = elem_srptr; + return 0; +} + +/* ioctl interface to listmp_put_head function */ +static inline int listmp_ioctl_put_head(struct listmp_cmd_args *cargs) +{ + struct listmp_elem *elem; + + elem = (struct listmp_elem *) sharedregion_get_ptr( + cargs->args.put_head.elem_srptr); + cargs->api_status = listmp_put_head( + cargs->args.put_head.listmp_handle, elem); + + return 0; +} + +/* ioctl interface to listmp_put_tail function */ +static inline int listmp_ioctl_put_tail(struct listmp_cmd_args *cargs) +{ + struct listmp_elem *elem; + + elem = (struct listmp_elem *) sharedregion_get_ptr( + cargs->args.put_tail.elem_srptr); + cargs->api_status = listmp_put_tail( + cargs->args.put_head.listmp_handle, elem); + + return 0; +} + +/* ioctl interface to listmp_insert function */ +static inline int listmp_ioctl_insert(struct listmp_cmd_args *cargs) +{ + struct listmp_elem *new_elem; + struct listmp_elem *cur_elem; + int status = -1; + + new_elem = (struct listmp_elem *) sharedregion_get_ptr( + cargs->args.insert.new_elem_srptr); + if (unlikely(new_elem == NULL)) + goto exit; + + cur_elem = (struct listmp_elem *) sharedregion_get_ptr( + cargs->args.insert.cur_elem_srptr); + if (unlikely(cur_elem == NULL)) + goto exit; + + status = listmp_insert(cargs->args.insert.listmp_handle, new_elem, + cur_elem); +exit: + cargs->api_status = status; + return 0; +} + +/* ioctl interface to listmp_remove function */ +static inline int listmp_ioctl_remove(struct listmp_cmd_args *cargs) +{ + struct listmp_elem *elem; + + elem = (struct listmp_elem *) sharedregion_get_ptr( + cargs->args.remove.elem_srptr); + cargs->api_status = listmp_remove( + cargs->args.get_head.listmp_handle, elem); + + return 0; +} + +/* ioctl interface to listmp_next function */ +static inline int listmp_ioctl_next(struct listmp_cmd_args *cargs) +{ + struct listmp_elem *elem = NULL; + struct listmp_elem *ret_elem = NULL; + u32 *next_elem_srptr = SHAREDREGION_INVALIDSRPTR; + int index; + + if (cargs->args.next.elem_srptr != NULL) { + elem = (struct listmp_elem *) sharedregion_get_ptr( + cargs->args.next.elem_srptr); + } + ret_elem = (struct listmp_elem *) listmp_next( + cargs->args.next.listmp_handle, elem); + if (unlikely(ret_elem == NULL)) + goto exit; + + index = sharedregion_get_id(ret_elem); + if (unlikely(index < 0)) + goto exit; + + next_elem_srptr = sharedregion_get_srptr((void *)ret_elem, index); + cargs->api_status = 0; + +exit: + cargs->args.next.next_elem_srptr = next_elem_srptr; + return 0; +} + +/* ioctl interface to listmp_prev function */ +static inline int listmp_ioctl_prev(struct listmp_cmd_args *cargs) +{ + struct listmp_elem *elem = NULL; + struct listmp_elem *ret_elem = NULL; + u32 *prev_elem_srptr = SHAREDREGION_INVALIDSRPTR; + int index; + + if (cargs->args.next.elem_srptr != NULL) { + elem = (struct listmp_elem *) sharedregion_get_ptr( + cargs->args.prev.elem_srptr); + } + ret_elem = (struct listmp_elem *) listmp_prev( + cargs->args.prev.listmp_handle, elem); + if (unlikely(ret_elem == NULL)) + goto exit; + + index = sharedregion_get_id(ret_elem); + if (unlikely(index < 0)) + goto exit; + + prev_elem_srptr = sharedregion_get_srptr((void *)ret_elem, index); + cargs->api_status = 0; + +exit: + cargs->args.prev.prev_elem_srptr = prev_elem_srptr; + return 0; + +} + +/* ioctl interface to listmp_shared_mem_req function */ +static inline int listmp_ioctl_shared_mem_req(struct listmp_cmd_args *cargs) +{ + s32 retval = 0; + unsigned long size; + struct listmp_params params; + + size = copy_from_user(¶ms, + (void __user *)cargs->args.shared_mem_req.params, + sizeof(struct listmp_params)); + if (size) { + retval = -EFAULT; + goto exit; + } + + params.shared_addr = sharedregion_get_ptr( + cargs->args.shared_mem_req.shared_addr_srptr); + cargs->args.shared_mem_req.bytes = listmp_shared_mem_req(¶ms); + cargs->api_status = 0; + +exit: + return retval; +} + +/* ioctl interface function for listmp module */ +int listmp_ioctl(struct inode *inode, struct file *filp, + unsigned int cmd, unsigned long args, bool user) +{ + int status = 0; + struct listmp_cmd_args __user *uarg = + (struct listmp_cmd_args __user *)args; + struct listmp_cmd_args cargs; + unsigned long size; + struct ipc_process_context *pr_ctxt = + (struct ipc_process_context *)filp->private_data; + + if (user == true) { +#ifdef CONFIG_SYSLINK_RECOVERY + if (ipc_recovering()) { + status = -EIO; + goto exit; + } +#endif + if (_IOC_DIR(cmd) & _IOC_READ) + status = !access_ok(VERIFY_WRITE, uarg, _IOC_SIZE(cmd)); + else if (_IOC_DIR(cmd) & _IOC_WRITE) + status = !access_ok(VERIFY_READ, uarg, _IOC_SIZE(cmd)); + if (status) { + status = -EFAULT; + goto exit; + } + + /* Copy the full args from user-side */ + size = copy_from_user(&cargs, uarg, + sizeof(struct listmp_cmd_args)); + if (size) { + status = -EFAULT; + goto exit; + } + } else { + if (args != 0) + memcpy(&cargs, (void *)args, + sizeof(struct listmp_cmd_args)); + } + + switch (cmd) { + case CMD_LISTMP_GETCONFIG: + status = listmp_ioctl_get_config(&cargs); + break; + + case CMD_LISTMP_SETUP: + status = listmp_ioctl_setup(&cargs); + if (status >= 0) + add_pr_res(pr_ctxt, CMD_LISTMP_DESTROY, NULL); + break; + + case CMD_LISTMP_DESTROY: + { + struct resource_info *info = NULL; + info = find_listmp_resource(pr_ctxt, CMD_LISTMP_DESTROY, + &cargs); + status = listmp_ioctl_destroy(&cargs); + remove_pr_res(pr_ctxt, info); + break; + } + + case CMD_LISTMP_PARAMS_INIT: + status = listmp_ioctl_params_init(&cargs); + break; + + case CMD_LISTMP_CREATE: + status = listmp_ioctl_create(&cargs); + if (status >= 0) { + struct listmp_cmd_args *temp = kmalloc( + sizeof(struct listmp_cmd_args), + GFP_KERNEL); + if (WARN_ON(!temp)) { + status = -ENOMEM; + goto exit; + } + temp->args.delete_instance.listmp_handle = + cargs.args.create.listmp_handle; + add_pr_res(pr_ctxt, CMD_LISTMP_DELETE, (void *)temp); + } + break; + + case CMD_LISTMP_DELETE: + { + struct resource_info *info = NULL; + info = find_listmp_resource(pr_ctxt, CMD_LISTMP_DELETE, + &cargs); + status = listmp_ioctl_delete(&cargs); + remove_pr_res(pr_ctxt, info); + break; + } + + case CMD_LISTMP_OPEN: + status = listmp_ioctl_open(&cargs); + break; + + case CMD_LISTMP_CLOSE: + status = listmp_ioctl_close(&cargs); + break; + + case CMD_LISTMP_ISEMPTY: + status = listmp_ioctl_isempty(&cargs); + break; + + case CMD_LISTMP_GETHEAD: + status = listmp_ioctl_get_head(&cargs); + break; + + case CMD_LISTMP_GETTAIL: + status = listmp_ioctl_get_tail(&cargs); + break; + + case CMD_LISTMP_PUTHEAD: + status = listmp_ioctl_put_head(&cargs); + break; + + case CMD_LISTMP_PUTTAIL: + status = listmp_ioctl_put_tail(&cargs); + break; + + case CMD_LISTMP_INSERT: + status = listmp_ioctl_insert(&cargs); + break; + + case CMD_LISTMP_REMOVE: + status = listmp_ioctl_remove(&cargs); + break; + + case CMD_LISTMP_NEXT: + status = listmp_ioctl_next(&cargs); + break; + + case CMD_LISTMP_PREV: + status = listmp_ioctl_prev(&cargs); + break; + + case CMD_LISTMP_SHAREDMEMREQ: + status = listmp_ioctl_shared_mem_req(&cargs); + break; + + case CMD_LISTMP_OPENBYADDR: + status = listmp_ioctl_open_by_addr(&cargs); + break; + + default: + WARN_ON(cmd); + status = -ENOTTY; + break; + } + if (status < 0) + goto exit; + + if (user == true) { + /* Copy the full args to the user-side. */ + size = copy_to_user(uarg, &cargs, + sizeof(struct listmp_cmd_args)); + if (size) { + status = -EFAULT; + goto exit; + } + } + return status; + +exit: + pr_err("listmp_ioctl failed: status = 0x%x\n", status); + return status; +} |