diff options
Diffstat (limited to 'arch/arm/mach-tegra/nv/nvrpc_user.c')
| -rw-r--r-- | arch/arm/mach-tegra/nv/nvrpc_user.c | 676 |
1 files changed, 0 insertions, 676 deletions
diff --git a/arch/arm/mach-tegra/nv/nvrpc_user.c b/arch/arm/mach-tegra/nv/nvrpc_user.c deleted file mode 100644 index 526c9fffb2a2..000000000000 --- a/arch/arm/mach-tegra/nv/nvrpc_user.c +++ /dev/null @@ -1,676 +0,0 @@ -/* - * arch/arm/mach-tegra/nvrpc_user.c - * - * User-land access to NvRm transport APIs - * - * Copyright (c) 2008-2010, NVIDIA Corporation. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - */ - -#define NV_DEBUG 0 - -#include <linux/module.h> -#include <linux/proc_fs.h> -#include <linux/miscdevice.h> -#include <linux/uaccess.h> -#include <mach/nvrm_linux.h> -#include <mach/nvrpc.h> -#include "nvcommon.h" -#include "nvassert.h" -#include "nvos.h" -#include "nvrm_transport.h" -#include "nvrm_xpc.h" - -#define DEVICE_NAME "nvrpc" -#define NVRPC_MAX_LOCAL_STACK 256 -#define nvrpc_stack_kzalloc(stackbuf, size, gfp) \ - ((size) > sizeof((stackbuf)) ? kzalloc((size),(gfp)) : (stackbuf)) -#define nvrpc_stack_kfree(stackbuf, buf) \ - do { \ - if ((buf) && (buf)!=(void *)(stackbuf)) \ - kfree(buf); \ - } while (0); - -static int nvrpc_open(struct inode *inode, struct file *file); -static int nvrpc_close(struct inode *inode, struct file *file); -static long nvrpc_unlocked_ioctl(struct file *file, - unsigned int cmd, unsigned long arg); - -//Ioctl functions -static int nvrpc_ioctl_open(struct file *filp, - unsigned int cmd, void __user *arg); -static int nvrpc_ioctl_get_port_name(struct file *filp, - unsigned int cmd, void __user *arg); -static int nvrpc_ioctl_close(struct file *filp, - unsigned int cmd, void __user *arg); -static int nvrpc_ioctl_wait_for_connect(struct file *filp, - unsigned int cmd, void __user *arg); -static int nvrpc_ioctl_connect(struct file *filp, - unsigned int cmd, void __user *arg); -static int nvrpc_ioctl_set_queue_depth(struct file *filp, - unsigned int cmd, void __user *arg); -static int nvrpc_ioctl_send_msg(struct file *filp, - unsigned int cmd, void __user *arg); -static int nvrpc_ioctl_send_msg_lp0(struct file *filp, - unsigned int cmd, void __user *arg); -static int nvrpc_ioctl_recv_msg(struct file *filp, - unsigned int cmd, void __user *arg); -static int nvrpc_ioctl_xpc_init(struct file *filp, - unsigned int cmd, void __user *arg); -static int nvrpc_ioctl_xpc_acquire(struct file *filp, - unsigned int cmd, void __user *arg); -static int nvrpc_ioctl_xpc_release(struct file *filp, - unsigned int cmd, void __user *arg); -static int nvrpc_ioctl_xpc_get_msg(struct file *filp, - unsigned int cmd, void __user *arg); -static int nvrpc_ioctl_xpc_send_msg(struct file *filp, - unsigned int cmd, void __user *arg); -static int nvrpc_ioctl_xpc_destroy(struct file *filp, - unsigned int cmd, void __user *arg); -static int nvrpc_ioctl_xpc_create(struct file *filp, - unsigned int cmd, void __user *arg); -// local function -static int nvrpc_make_error_code(NvError e); - -static const struct file_operations nvrpc_fops = -{ - .owner = THIS_MODULE, - .open = nvrpc_open, - .release = nvrpc_close, - .unlocked_ioctl = nvrpc_unlocked_ioctl, -}; - -static struct miscdevice nvrpc_dev = -{ - .name = DEVICE_NAME, - .fops = &nvrpc_fops, - .minor = MISC_DYNAMIC_MINOR, -}; - -static DEFINE_MUTEX(nvrpc_device_lock); - -static NvBool s_init_done = NV_FALSE; -NvRmDeviceHandle s_hRmGlobal = NULL; - -int nvrpc_open(struct inode *inode, struct file *file) -{ - NvError e = NvSuccess; - - mutex_lock(&nvrpc_device_lock); - if (s_init_done == NV_FALSE) { - e = NvRmTransportInit(s_hRmGlobal); - s_init_done = NV_TRUE; - } - mutex_unlock(&nvrpc_device_lock); - - if (e == NvSuccess) - return 0; - else - return -ENODEV; -} - -int nvrpc_close(struct inode *inode, struct file *file) -{ - return 0; -} - -static int nvrpc_make_error_code(NvError e) -{ - int error = 0; - if (error != NvSuccess) { - if (e == NvError_InvalidAddress) - error = -EFAULT; - else if (e == NvError_BadParameter) - error = -EINVAL; - else - error = -EIO; - } - return error; -} - -NvRmTransportHandle g_hTransportAvp = NULL; -NvRmTransportHandle g_hTransportCpu = NULL; -NvOsSemaphoreHandle g_hTransportAvpSem = NULL; -NvOsSemaphoreHandle g_hTransportCpuSem = NULL; -int g_hTransportAvpIsConnected = 0; -int g_hTransportCpuIsConnected = 0; - -static int nvrpc_ioctl_open(struct file *filp, - unsigned int cmd, void __user *arg) -{ - NvError e = NvSuccess; - int error; - struct nvrpc_open_params op; - char *p_name = NULL; - NvOsSemaphoreHandle recv_sem = NULL; - NvU32 port_name[NVRPC_MAX_LOCAL_STACK/sizeof(NvU32)]; - - error = copy_from_user(&op, arg, sizeof(op)); - if (error) - goto fail; - - if (op.port_name_size) { - p_name = nvrpc_stack_kzalloc(port_name, - op.port_name_size, GFP_KERNEL); - if (!p_name) { - error = -ENOMEM; - goto fail; - } - error = copy_from_user(p_name, (const void*)op.port_name, - op.port_name_size); - if (error) - goto fail; - if (p_name[op.port_name_size - 1] != 0) { - error = -EINVAL; - goto fail; - } - } - if (op.sem) { - NvOsSemaphoreHandle sem = (NvOsSemaphoreHandle) op.sem; - e = NvOsSemaphoreUnmarshal(sem, &recv_sem); - if (e != NvSuccess) - goto fail; - } - op.ret_val = NvRmTransportOpen(s_hRmGlobal, p_name, recv_sem, - (void *)&op.transport_handle); - error = copy_to_user(arg, &op, sizeof(op)); - if (p_name && ! strcmp(p_name, "RPC_CPU_PORT")) { - if (g_hTransportCpu) { - panic("%s: g_hTransportCpu=%p is already assigned.\n", __func__, g_hTransportCpu); - } - g_hTransportCpu = (NvRmTransportHandle)op.transport_handle; - g_hTransportCpuSem = (NvOsSemaphoreHandle) op.sem; - } - if (p_name && ! strcmp(p_name, "RPC_AVP_PORT")) { - if (g_hTransportAvp) { - panic("%s: g_hTransportAvp=%p is already assigned.\n", __func__, g_hTransportAvp); - } - g_hTransportAvp = (NvRmTransportHandle)op.transport_handle; - g_hTransportAvpSem = (NvOsSemaphoreHandle) op.sem; - } - -fail: - nvrpc_stack_kfree((char*)port_name, p_name); - if (recv_sem) - NvOsSemaphoreDestroy(recv_sem); - if (e != NvSuccess) - error = nvrpc_make_error_code(e); - return error; -} - -static int nvrpc_ioctl_get_port_name(struct file *filp, - unsigned int cmd, void __user *arg) -{ - int error; - - struct nvrpc_open_params op; - NvS8 *p_name = NULL; - NvU32 port_name[NVRPC_MAX_LOCAL_STACK/sizeof(NvU32)]; - - error = copy_from_user(&op, arg, sizeof(op)); - if (error) - goto fail; - if (op.port_name_size && op.port_name) { - p_name = nvrpc_stack_kzalloc(port_name, - op.port_name_size, GFP_KERNEL); - if (!p_name) { - error = -ENOMEM; - goto fail; - } - } - NvRmTransportGetPortName((NvRmTransportHandle)op.transport_handle, - p_name, op.port_name_size); - - if (op.port_name_size && p_name) { - error = copy_to_user((void*)op.port_name, - p_name, op.port_name_size * sizeof(NvU8)); - } - -fail: - nvrpc_stack_kfree((NvS8*)port_name, p_name); - return error; -} - -static int nvrpc_ioctl_close(struct file *filp, - unsigned int cmd, void __user *arg) -{ - int error; - struct nvrpc_handle_param op; - - error = copy_from_user(&op, arg, sizeof(op)); - if (error) - goto fail; - NvRmTransportClose((void*)op.handle); - -fail: - return error; -} - -static int nvrpc_ioctl_wait_for_connect(struct file *filp, - unsigned int cmd, void __user *arg) -{ - NvError e = NvSuccess; - int error; - struct nvrpc_handle_param op; - - error = copy_from_user(&op, arg, sizeof(op)); - if (error) - goto fail; - op.ret_val = NvRmTransportWaitForConnect( - (void *)op.handle, op.param); - error = copy_to_user(arg, &op, sizeof(op)); - -fail: - if (e != NvSuccess) - error = nvrpc_make_error_code(e); - return error; -} - -static int nvrpc_ioctl_connect(struct file *filp, - unsigned int cmd, void __user *arg) -{ - NvError e = NvSuccess; - int error; - struct nvrpc_handle_param op; - NvU8 port_name[NVRPC_MAX_LOCAL_STACK]; - - error = copy_from_user(&op, arg, sizeof(op)); - if (error) - goto fail; - - NvRmTransportGetPortName((void *)op.handle, - port_name, sizeof(port_name)); - - - op.ret_val = NvRmTransportConnect( - (void *)op.handle, op.param); - error = copy_to_user(arg, &op, sizeof(op)); - - if (! strcmp(port_name, "RPC_AVP_PORT")) { - g_hTransportAvpIsConnected = 1; - } - if (! strcmp(port_name, "RPC_CPU_PORT")) { - g_hTransportCpuIsConnected = 1; - } - -fail: - if (e != NvSuccess) - error = nvrpc_make_error_code(e); - return error; -} - -static int nvrpc_ioctl_set_queue_depth(struct file *filp, - unsigned int cmd, void __user *arg) -{ - NvError e = NvSuccess; - int error; - struct nvrpc_set_queue_depth_params op; - - error = copy_from_user(&op, arg, sizeof(op)); - if (error) - goto fail; - op.ret_val = NvRmTransportSetQueueDepth( - (NvRmTransportHandle)op.transport_handle, - op.max_queue_depth, - op.max_message_size); - error = copy_to_user(arg, &op, sizeof(op)); - -fail: - if (e != NvSuccess) - error = nvrpc_make_error_code(e); - return error; -} - -static int nvrpc_ioctl_send_msg(struct file *filp, - unsigned int cmd, void __user *arg) -{ - int error; - struct nvrpc_msg_params op; - void* msg_buffer = NULL; - NvU32 buffer[NVRPC_MAX_LOCAL_STACK/sizeof(NvU32)]; - - error = copy_from_user(&op, arg, sizeof(op)); - if (error) - goto fail; - if (op.msg_buffer && op.max_message_size) { - msg_buffer = nvrpc_stack_kzalloc(buffer, - op.max_message_size, - GFP_KERNEL); - if (!msg_buffer) { - error = -ENOMEM; - goto fail; - } - error = copy_from_user(msg_buffer, - (void*)op.msg_buffer, - op.max_message_size); - if (error) - goto fail; - } - - op.ret_val = NvRmTransportSendMsg( - (NvRmTransportHandle)op.transport_handle, - msg_buffer, op.max_message_size, op.params); - error = copy_to_user(arg, &op, sizeof(op)); - -fail: - nvrpc_stack_kfree(buffer, msg_buffer); - return error; -} - -static int nvrpc_ioctl_send_msg_lp0(struct file *filp, - unsigned int cmd, void __user *arg) -{ - int error; - struct nvrpc_msg_params op; - void* msg_buffer = NULL; - NvU32 buffer[NVRPC_MAX_LOCAL_STACK/sizeof(NvU32)]; - - error = copy_from_user(&op, arg, sizeof(op)); - if (error) - goto fail; - if (op.msg_buffer && op.max_message_size) { - msg_buffer = nvrpc_stack_kzalloc(buffer, - op.max_message_size, GFP_KERNEL); - if (!msg_buffer) { - error = -ENOMEM; - goto fail; - } - error = copy_from_user(msg_buffer, (void*)op.msg_buffer, - op.max_message_size); - if (error) - goto fail; - } - op.ret_val = NvRmTransportSendMsgInLP0( - (NvRmTransportHandle)op.transport_handle, - msg_buffer, op.max_message_size); - error = copy_to_user(arg, &op, sizeof(op)); - -fail: - nvrpc_stack_kfree(buffer, msg_buffer); - return error; -} - -static int nvrpc_ioctl_recv_msg(struct file *filp, - unsigned int cmd, void __user *arg) -{ - int error; - struct nvrpc_msg_params op; - void* msg_buffer = NULL; - NvU32 buffer[NVRPC_MAX_LOCAL_STACK/sizeof(NvU32)]; - - error = copy_from_user(&op, arg, sizeof(op)); - if (error) - goto fail; - if (op.msg_buffer && op.max_message_size) { - msg_buffer = nvrpc_stack_kzalloc(buffer, - op.max_message_size, GFP_KERNEL); - if (!msg_buffer) { - error = -ENOMEM; - goto fail; - } - } else { - error = -EINVAL; - goto fail; - } - op.ret_val = NvRmTransportRecvMsg( - (NvRmTransportHandle)op.transport_handle, - msg_buffer, op.max_message_size, &op.params); - error = copy_to_user(arg, &op, sizeof(op)); - if (op.msg_buffer && msg_buffer) { - error = copy_to_user((void*)op.msg_buffer, - msg_buffer, op.max_message_size); - if (error) - goto fail; - } - -fail: - nvrpc_stack_kfree(buffer, msg_buffer); - return error; -} - -static int nvrpc_ioctl_xpc_init(struct file *filp, - unsigned int cmd, void __user *arg) -{ - int error; - struct nvrpc_handle_param op; - - error = copy_from_user(&op, arg, sizeof(op)); - if (error) - goto fail; - op.ret_val = NvRmXpcInitArbSemaSystem((void *)op.handle); - error = copy_to_user(arg, &op, sizeof(op)); - -fail: - return error; -} - -static int nvrpc_ioctl_xpc_acquire(struct file *filp, - unsigned int cmd, void __user *arg) -{ - int error; - struct nvrpc_handle_param op; - - error = copy_from_user(&op, arg, sizeof(op)); - if (error) - goto fail; - NvRmXpcModuleAcquire(op.param); - -fail: - return error; -} - -static int nvrpc_ioctl_xpc_release(struct file *filp, - unsigned int cmd, void __user *arg) -{ - int error; - struct nvrpc_handle_param op; - - error = copy_from_user(&op, arg, sizeof(op)); - if (error) - goto fail; - NvRmXpcModuleRelease(op.param); - -fail: - return error; -} - -static int nvrpc_ioctl_xpc_get_msg(struct file *filp, - unsigned int cmd, void __user *arg) -{ - int error; - struct nvrpc_handle_param op; - - error = copy_from_user(&op, arg, sizeof(op)); - if (error) - goto fail; - op.ret_val = NvRmPrivXpcGetMessage( - (NvRmPrivXpcMessageHandle)op.handle); - error = copy_to_user(arg, &op, sizeof(op)); - -fail: - return error; -} - -static int nvrpc_ioctl_xpc_send_msg(struct file *filp, - unsigned int cmd, void __user *arg) -{ - int error; - struct nvrpc_handle_param op; - - error = copy_from_user(&op, arg, sizeof(op)); - if (error) - goto fail; - op.ret_val = NvRmPrivXpcSendMessage( - (NvRmPrivXpcMessageHandle)op.handle, op.param); - error = copy_to_user(arg, &op, sizeof(op)); - -fail: - return error; -} - -static int nvrpc_ioctl_xpc_destroy(struct file *filp, - unsigned int cmd, void __user *arg) -{ - int error; - struct nvrpc_handle_param op; - - error = copy_from_user(&op, arg, sizeof(op)); - if (error) - goto fail; - NvRmPrivXpcDestroy((NvRmPrivXpcMessageHandle)op.handle); - -fail: - return error; -} - -static int nvrpc_ioctl_xpc_create(struct file *filp, - unsigned int cmd, void __user *arg) -{ - int error; - struct nvrpc_handle_param op; - - error = copy_from_user(&op, arg, sizeof(op)); - if (error) - goto fail; - op.ret_val = NvRmPrivXpcCreate((NvRmDeviceHandle)op.handle, - (void*)&op.param); - error = copy_to_user(&op, arg, sizeof(op)); - -fail: - return error; -} - - -static long nvrpc_unlocked_ioctl(struct file *file, - unsigned int cmd, unsigned long arg) -{ - int err = 0; - void __user *uarg = (void __user *)arg; - - if (_IOC_TYPE(cmd) != NVRPC_IOC_MAGIC) - return -ENOTTY; - if (_IOC_DIR(cmd) & _IOC_READ) - err = !access_ok(VERIFY_WRITE, uarg, _IOC_SIZE(cmd)); - if (_IOC_DIR(cmd) & _IOC_WRITE) - err = !access_ok(VERIFY_READ, uarg, _IOC_SIZE(cmd)); - - if (err) - return -EFAULT; - - switch (cmd) { - case NVRPC_IOCTL_OPEN: - err = nvrpc_ioctl_open(file, cmd, uarg); - break; - - case NVRPC_IOCTL_GET_PORTNAME: - err = nvrpc_ioctl_get_port_name(file, cmd, uarg); - break; - - case NVRPC_IOCTL_CLOSE: - err = nvrpc_ioctl_close(file, cmd, uarg); - break; - - case NVRPC_IOCTL_INIT: - case NVRPC_IOCTL_DEINIT: - break; - - case NVRPC_IOCTL_WAIT_FOR_CONNECT: - err = nvrpc_ioctl_wait_for_connect(file, cmd, uarg); - break; - - case NVRPC_IOCTL_CONNECT: - err = nvrpc_ioctl_connect(file, cmd, uarg); - break; - - case NVRPC_IOCTL_SET_QUEUE_DEPTH: - err = nvrpc_ioctl_set_queue_depth(file, cmd, uarg); - break; - - case NVRPC_IOCTL_SEND_MSG: - err = nvrpc_ioctl_send_msg(file, cmd, uarg); - break; - - case NVRPC_IOCTL_SEND_MSG_LP0: - err = nvrpc_ioctl_send_msg_lp0(file, cmd, uarg); - break; - - case NVRPC_IOCTL_RECV_MSG: - err = nvrpc_ioctl_recv_msg(file, cmd, uarg); - break; - - case NVRPC_IOCTL_XPC_INIT: - err = nvrpc_ioctl_xpc_init(file, cmd, uarg); - break; - - case NVRPC_IOCTL_XPC_ACQUIRE: - err = nvrpc_ioctl_xpc_acquire(file, cmd, uarg); - break; - - case NVRPC_IOCTL_XPC_RELEASE: - err = nvrpc_ioctl_xpc_release(file, cmd, uarg); - break; - - case NVRPC_IOCTL_XPC_GET_MSG: - err = nvrpc_ioctl_xpc_get_msg(file, cmd, uarg); - break; - - case NVRPC_IOCTL_XPC_SEND_MSG: - err = nvrpc_ioctl_xpc_send_msg(file, cmd, uarg); - break; - - case NVRPC_IOCTL_XPC_DESTROY: - err = nvrpc_ioctl_xpc_destroy(file, cmd, uarg); - break; - - case NVRPC_IOCTL_XPC_CREATE: - err = nvrpc_ioctl_xpc_create(file, cmd, uarg); - break; - - default: - return -ENOTTY; - } - return err; -} - -static int __init nvrpc_init(void) -{ - int ret = 0; - - NvRmDeviceHandle handle; - NvRmInit(&handle); - - if (s_init_done == NV_FALSE) { - NvError e; - - e = NvRmOpen(&s_hRmGlobal, 0); - e = NvRmTransportInit(s_hRmGlobal); - s_init_done = NV_TRUE; - } - - ret = misc_register(&nvrpc_dev); - if (ret) { - pr_err("%s misc register FAILED\n", __func__); - } - return ret; -} - -static void __exit nvrpc_deinit(void) -{ - misc_deregister(&nvrpc_dev); -} - -module_init(nvrpc_init); -module_exit(nvrpc_deinit); |