diff options
Diffstat (limited to 'drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c')
| -rw-r--r-- | drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c | 860 |
1 files changed, 860 insertions, 0 deletions
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c new file mode 100644 index 000000000000..8072ff613636 --- /dev/null +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c @@ -0,0 +1,860 @@ +/** + * Copyright (c) 2010-2012 Broadcom. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The names of the above-listed copyright holders may not be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2, as published by the Free + * Software Foundation. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include <linux/module.h> +#include <linux/types.h> + +#include "interface/vchi/vchi.h" +#include "vchiq.h" +#include "vchiq_core.h" + +#include "vchiq_util.h" + +#include <stddef.h> + +#define vchiq_status_to_vchi(status) ((int32_t)status) + +typedef struct { + VCHIQ_SERVICE_HANDLE_T handle; + + VCHIU_QUEUE_T queue; + + VCHI_CALLBACK_T callback; + void *callback_param; +} SHIM_SERVICE_T; + +/* ---------------------------------------------------------------------- + * return pointer to the mphi message driver function table + * -------------------------------------------------------------------- */ +const VCHI_MESSAGE_DRIVER_T * +vchi_mphi_message_driver_func_table(void) +{ + return NULL; +} + +/* ---------------------------------------------------------------------- + * return a pointer to the 'single' connection driver fops + * -------------------------------------------------------------------- */ +const VCHI_CONNECTION_API_T * +single_get_func_table(void) +{ + return NULL; +} + +VCHI_CONNECTION_T *vchi_create_connection( + const VCHI_CONNECTION_API_T *function_table, + const VCHI_MESSAGE_DRIVER_T *low_level) +{ + (void)function_table; + (void)low_level; + return NULL; +} + +/*********************************************************** + * Name: vchi_msg_peek + * + * Arguments: const VCHI_SERVICE_HANDLE_T handle, + * void **data, + * uint32_t *msg_size, + + + * VCHI_FLAGS_T flags + * + * Description: Routine to return a pointer to the current message (to allow in + * place processing). The message can be removed using + * vchi_msg_remove when you're finished + * + * Returns: int32_t - success == 0 + * + ***********************************************************/ +int32_t vchi_msg_peek(VCHI_SERVICE_HANDLE_T handle, + void **data, + uint32_t *msg_size, + VCHI_FLAGS_T flags) +{ + SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; + VCHIQ_HEADER_T *header; + + WARN_ON((flags != VCHI_FLAGS_NONE) && + (flags != VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE)); + + if (flags == VCHI_FLAGS_NONE) + if (vchiu_queue_is_empty(&service->queue)) + return -1; + + header = vchiu_queue_peek(&service->queue); + + *data = header->data; + *msg_size = header->size; + + return 0; +} +EXPORT_SYMBOL(vchi_msg_peek); + +/*********************************************************** + * Name: vchi_msg_remove + * + * Arguments: const VCHI_SERVICE_HANDLE_T handle, + * + * Description: Routine to remove a message (after it has been read with + * vchi_msg_peek) + * + * Returns: int32_t - success == 0 + * + ***********************************************************/ +int32_t vchi_msg_remove(VCHI_SERVICE_HANDLE_T handle) +{ + SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; + VCHIQ_HEADER_T *header; + + header = vchiu_queue_pop(&service->queue); + + vchiq_release_message(service->handle, header); + + return 0; +} +EXPORT_SYMBOL(vchi_msg_remove); + +/*********************************************************** + * Name: vchi_msg_queue + * + * Arguments: VCHI_SERVICE_HANDLE_T handle, + * const void *data, + * uint32_t data_size, + * VCHI_FLAGS_T flags, + * void *msg_handle, + * + * Description: Thin wrapper to queue a message onto a connection + * + * Returns: int32_t - success == 0 + * + ***********************************************************/ +int32_t vchi_msg_queue(VCHI_SERVICE_HANDLE_T handle, + const void *data, + uint32_t data_size, + VCHI_FLAGS_T flags, + void *msg_handle) +{ + SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; + VCHIQ_ELEMENT_T element = {data, data_size}; + VCHIQ_STATUS_T status; + + (void)msg_handle; + + WARN_ON(flags != VCHI_FLAGS_BLOCK_UNTIL_QUEUED); + + status = vchiq_queue_message(service->handle, &element, 1); + + /* vchiq_queue_message() may return VCHIQ_RETRY, so we need to + ** implement a retry mechanism since this function is supposed + ** to block until queued + */ + while (status == VCHIQ_RETRY) { + msleep(1); + status = vchiq_queue_message(service->handle, &element, 1); + } + + return vchiq_status_to_vchi(status); +} +EXPORT_SYMBOL(vchi_msg_queue); + +/*********************************************************** + * Name: vchi_bulk_queue_receive + * + * Arguments: VCHI_BULK_HANDLE_T handle, + * void *data_dst, + * const uint32_t data_size, + * VCHI_FLAGS_T flags + * void *bulk_handle + * + * Description: Routine to setup a rcv buffer + * + * Returns: int32_t - success == 0 + * + ***********************************************************/ +int32_t vchi_bulk_queue_receive(VCHI_SERVICE_HANDLE_T handle, + void *data_dst, + uint32_t data_size, + VCHI_FLAGS_T flags, + void *bulk_handle) +{ + SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; + VCHIQ_BULK_MODE_T mode; + VCHIQ_STATUS_T status; + + switch ((int)flags) { + case VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE + | VCHI_FLAGS_BLOCK_UNTIL_QUEUED: + WARN_ON(!service->callback); + mode = VCHIQ_BULK_MODE_CALLBACK; + break; + case VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE: + mode = VCHIQ_BULK_MODE_BLOCKING; + break; + case VCHI_FLAGS_BLOCK_UNTIL_QUEUED: + case VCHI_FLAGS_NONE: + mode = VCHIQ_BULK_MODE_NOCALLBACK; + break; + default: + WARN(1, "unsupported message\n"); + return vchiq_status_to_vchi(VCHIQ_ERROR); + } + + status = vchiq_bulk_receive(service->handle, data_dst, data_size, + bulk_handle, mode); + + /* vchiq_bulk_receive() may return VCHIQ_RETRY, so we need to + ** implement a retry mechanism since this function is supposed + ** to block until queued + */ + while (status == VCHIQ_RETRY) { + msleep(1); + status = vchiq_bulk_receive(service->handle, data_dst, + data_size, bulk_handle, mode); + } + + return vchiq_status_to_vchi(status); +} +EXPORT_SYMBOL(vchi_bulk_queue_receive); + +/*********************************************************** + * Name: vchi_bulk_queue_transmit + * + * Arguments: VCHI_BULK_HANDLE_T handle, + * const void *data_src, + * uint32_t data_size, + * VCHI_FLAGS_T flags, + * void *bulk_handle + * + * Description: Routine to transmit some data + * + * Returns: int32_t - success == 0 + * + ***********************************************************/ +int32_t vchi_bulk_queue_transmit(VCHI_SERVICE_HANDLE_T handle, + const void *data_src, + uint32_t data_size, + VCHI_FLAGS_T flags, + void *bulk_handle) +{ + SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; + VCHIQ_BULK_MODE_T mode; + VCHIQ_STATUS_T status; + + switch ((int)flags) { + case VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE + | VCHI_FLAGS_BLOCK_UNTIL_QUEUED: + WARN_ON(!service->callback); + mode = VCHIQ_BULK_MODE_CALLBACK; + break; + case VCHI_FLAGS_BLOCK_UNTIL_DATA_READ: + case VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE: + mode = VCHIQ_BULK_MODE_BLOCKING; + break; + case VCHI_FLAGS_BLOCK_UNTIL_QUEUED: + case VCHI_FLAGS_NONE: + mode = VCHIQ_BULK_MODE_NOCALLBACK; + break; + default: + WARN(1, "unsupported message\n"); + return vchiq_status_to_vchi(VCHIQ_ERROR); + } + + status = vchiq_bulk_transmit(service->handle, data_src, data_size, + bulk_handle, mode); + + /* vchiq_bulk_transmit() may return VCHIQ_RETRY, so we need to + ** implement a retry mechanism since this function is supposed + ** to block until queued + */ + while (status == VCHIQ_RETRY) { + msleep(1); + status = vchiq_bulk_transmit(service->handle, data_src, + data_size, bulk_handle, mode); + } + + return vchiq_status_to_vchi(status); +} +EXPORT_SYMBOL(vchi_bulk_queue_transmit); + +/*********************************************************** + * Name: vchi_msg_dequeue + * + * Arguments: VCHI_SERVICE_HANDLE_T handle, + * void *data, + * uint32_t max_data_size_to_read, + * uint32_t *actual_msg_size + * VCHI_FLAGS_T flags + * + * Description: Routine to dequeue a message into the supplied buffer + * + * Returns: int32_t - success == 0 + * + ***********************************************************/ +int32_t vchi_msg_dequeue(VCHI_SERVICE_HANDLE_T handle, + void *data, + uint32_t max_data_size_to_read, + uint32_t *actual_msg_size, + VCHI_FLAGS_T flags) +{ + SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; + VCHIQ_HEADER_T *header; + + WARN_ON((flags != VCHI_FLAGS_NONE) && + (flags != VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE)); + + if (flags == VCHI_FLAGS_NONE) + if (vchiu_queue_is_empty(&service->queue)) + return -1; + + header = vchiu_queue_pop(&service->queue); + + memcpy(data, header->data, header->size < max_data_size_to_read ? + header->size : max_data_size_to_read); + + *actual_msg_size = header->size; + + vchiq_release_message(service->handle, header); + + return 0; +} +EXPORT_SYMBOL(vchi_msg_dequeue); + +/*********************************************************** + * Name: vchi_msg_queuev + * + * Arguments: VCHI_SERVICE_HANDLE_T handle, + * VCHI_MSG_VECTOR_T *vector, + * uint32_t count, + * VCHI_FLAGS_T flags, + * void *msg_handle + * + * Description: Thin wrapper to queue a message onto a connection + * + * Returns: int32_t - success == 0 + * + ***********************************************************/ + +vchiq_static_assert(sizeof(VCHI_MSG_VECTOR_T) == sizeof(VCHIQ_ELEMENT_T)); +vchiq_static_assert(offsetof(VCHI_MSG_VECTOR_T, vec_base) == + offsetof(VCHIQ_ELEMENT_T, data)); +vchiq_static_assert(offsetof(VCHI_MSG_VECTOR_T, vec_len) == + offsetof(VCHIQ_ELEMENT_T, size)); + +int32_t vchi_msg_queuev(VCHI_SERVICE_HANDLE_T handle, + VCHI_MSG_VECTOR_T *vector, + uint32_t count, + VCHI_FLAGS_T flags, + void *msg_handle) +{ + SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; + + (void)msg_handle; + + WARN_ON(flags != VCHI_FLAGS_BLOCK_UNTIL_QUEUED); + + return vchiq_status_to_vchi(vchiq_queue_message(service->handle, + (const VCHIQ_ELEMENT_T *)vector, count)); +} +EXPORT_SYMBOL(vchi_msg_queuev); + +/*********************************************************** + * Name: vchi_held_msg_release + * + * Arguments: VCHI_HELD_MSG_T *message + * + * Description: Routine to release a held message (after it has been read with + * vchi_msg_hold) + * + * Returns: int32_t - success == 0 + * + ***********************************************************/ +int32_t vchi_held_msg_release(VCHI_HELD_MSG_T *message) +{ + vchiq_release_message((VCHIQ_SERVICE_HANDLE_T)message->service, + (VCHIQ_HEADER_T *)message->message); + + return 0; +} +EXPORT_SYMBOL(vchi_held_msg_release); + +/*********************************************************** + * Name: vchi_msg_hold + * + * Arguments: VCHI_SERVICE_HANDLE_T handle, + * void **data, + * uint32_t *msg_size, + * VCHI_FLAGS_T flags, + * VCHI_HELD_MSG_T *message_handle + * + * Description: Routine to return a pointer to the current message (to allow + * in place processing). The message is dequeued - don't forget + * to release the message using vchi_held_msg_release when you're + * finished. + * + * Returns: int32_t - success == 0 + * + ***********************************************************/ +int32_t vchi_msg_hold(VCHI_SERVICE_HANDLE_T handle, + void **data, + uint32_t *msg_size, + VCHI_FLAGS_T flags, + VCHI_HELD_MSG_T *message_handle) +{ + SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; + VCHIQ_HEADER_T *header; + + WARN_ON((flags != VCHI_FLAGS_NONE) && + (flags != VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE)); + + if (flags == VCHI_FLAGS_NONE) + if (vchiu_queue_is_empty(&service->queue)) + return -1; + + header = vchiu_queue_pop(&service->queue); + + *data = header->data; + *msg_size = header->size; + + message_handle->service = + (struct opaque_vchi_service_t *)service->handle; + message_handle->message = header; + + return 0; +} +EXPORT_SYMBOL(vchi_msg_hold); + +/*********************************************************** + * Name: vchi_initialise + * + * Arguments: VCHI_INSTANCE_T *instance_handle + * + * Description: Initialises the hardware but does not transmit anything + * When run as a Host App this will be called twice hence the need + * to malloc the state information + * + * Returns: 0 if successful, failure otherwise + * + ***********************************************************/ + +int32_t vchi_initialise(VCHI_INSTANCE_T *instance_handle) +{ + VCHIQ_INSTANCE_T instance; + VCHIQ_STATUS_T status; + + status = vchiq_initialise(&instance); + + *instance_handle = (VCHI_INSTANCE_T)instance; + + return vchiq_status_to_vchi(status); +} +EXPORT_SYMBOL(vchi_initialise); + +/*********************************************************** + * Name: vchi_connect + * + * Arguments: VCHI_CONNECTION_T **connections + * const uint32_t num_connections + * VCHI_INSTANCE_T instance_handle) + * + * Description: Starts the command service on each connection, + * causing INIT messages to be pinged back and forth + * + * Returns: 0 if successful, failure otherwise + * + ***********************************************************/ +int32_t vchi_connect(VCHI_CONNECTION_T **connections, + const uint32_t num_connections, + VCHI_INSTANCE_T instance_handle) +{ + VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle; + + (void)connections; + (void)num_connections; + + return vchiq_connect(instance); +} +EXPORT_SYMBOL(vchi_connect); + + +/*********************************************************** + * Name: vchi_disconnect + * + * Arguments: VCHI_INSTANCE_T instance_handle + * + * Description: Stops the command service on each connection, + * causing DE-INIT messages to be pinged back and forth + * + * Returns: 0 if successful, failure otherwise + * + ***********************************************************/ +int32_t vchi_disconnect(VCHI_INSTANCE_T instance_handle) +{ + VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle; + return vchiq_status_to_vchi(vchiq_shutdown(instance)); +} +EXPORT_SYMBOL(vchi_disconnect); + + +/*********************************************************** + * Name: vchi_service_open + * Name: vchi_service_create + * + * Arguments: VCHI_INSTANCE_T *instance_handle + * SERVICE_CREATION_T *setup, + * VCHI_SERVICE_HANDLE_T *handle + * + * Description: Routine to open a service + * + * Returns: int32_t - success == 0 + * + ***********************************************************/ + +static VCHIQ_STATUS_T shim_callback(VCHIQ_REASON_T reason, + VCHIQ_HEADER_T *header, VCHIQ_SERVICE_HANDLE_T handle, void *bulk_user) +{ + SHIM_SERVICE_T *service = + (SHIM_SERVICE_T *)VCHIQ_GET_SERVICE_USERDATA(handle); + + if (!service->callback) + goto release; + + switch (reason) { + case VCHIQ_MESSAGE_AVAILABLE: + vchiu_queue_push(&service->queue, header); + + service->callback(service->callback_param, + VCHI_CALLBACK_MSG_AVAILABLE, NULL); + + goto done; + break; + + case VCHIQ_BULK_TRANSMIT_DONE: + service->callback(service->callback_param, + VCHI_CALLBACK_BULK_SENT, bulk_user); + break; + + case VCHIQ_BULK_RECEIVE_DONE: + service->callback(service->callback_param, + VCHI_CALLBACK_BULK_RECEIVED, bulk_user); + break; + + case VCHIQ_SERVICE_CLOSED: + service->callback(service->callback_param, + VCHI_CALLBACK_SERVICE_CLOSED, NULL); + break; + + case VCHIQ_SERVICE_OPENED: + /* No equivalent VCHI reason */ + break; + + case VCHIQ_BULK_TRANSMIT_ABORTED: + service->callback(service->callback_param, + VCHI_CALLBACK_BULK_TRANSMIT_ABORTED, + bulk_user); + break; + + case VCHIQ_BULK_RECEIVE_ABORTED: + service->callback(service->callback_param, + VCHI_CALLBACK_BULK_RECEIVE_ABORTED, + bulk_user); + break; + + default: + WARN(1, "not supported\n"); + break; + } + +release: + vchiq_release_message(service->handle, header); +done: + return VCHIQ_SUCCESS; +} + +static SHIM_SERVICE_T *service_alloc(VCHIQ_INSTANCE_T instance, + SERVICE_CREATION_T *setup) +{ + SHIM_SERVICE_T *service = kzalloc(sizeof(SHIM_SERVICE_T), GFP_KERNEL); + + (void)instance; + + if (service) { + if (vchiu_queue_init(&service->queue, 64)) { + service->callback = setup->callback; + service->callback_param = setup->callback_param; + } else { + kfree(service); + service = NULL; + } + } + + return service; +} + +static void service_free(SHIM_SERVICE_T *service) +{ + if (service) { + vchiu_queue_delete(&service->queue); + kfree(service); + } +} + +int32_t vchi_service_open(VCHI_INSTANCE_T instance_handle, + SERVICE_CREATION_T *setup, + VCHI_SERVICE_HANDLE_T *handle) +{ + VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle; + SHIM_SERVICE_T *service = service_alloc(instance, setup); + + *handle = (VCHI_SERVICE_HANDLE_T)service; + + if (service) { + VCHIQ_SERVICE_PARAMS_T params; + VCHIQ_STATUS_T status; + + memset(¶ms, 0, sizeof(params)); + params.fourcc = setup->service_id; + params.callback = shim_callback; + params.userdata = service; + params.version = setup->version.version; + params.version_min = setup->version.version_min; + + status = vchiq_open_service(instance, ¶ms, + &service->handle); + if (status != VCHIQ_SUCCESS) { + service_free(service); + service = NULL; + *handle = NULL; + } + } + + return (service != NULL) ? 0 : -1; +} +EXPORT_SYMBOL(vchi_service_open); + +int32_t vchi_service_create(VCHI_INSTANCE_T instance_handle, + SERVICE_CREATION_T *setup, + VCHI_SERVICE_HANDLE_T *handle) +{ + VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle; + SHIM_SERVICE_T *service = service_alloc(instance, setup); + + *handle = (VCHI_SERVICE_HANDLE_T)service; + + if (service) { + VCHIQ_SERVICE_PARAMS_T params; + VCHIQ_STATUS_T status; + + memset(¶ms, 0, sizeof(params)); + params.fourcc = setup->service_id; + params.callback = shim_callback; + params.userdata = service; + params.version = setup->version.version; + params.version_min = setup->version.version_min; + status = vchiq_add_service(instance, ¶ms, &service->handle); + + if (status != VCHIQ_SUCCESS) { + service_free(service); + service = NULL; + *handle = NULL; + } + } + + return (service != NULL) ? 0 : -1; +} +EXPORT_SYMBOL(vchi_service_create); + +int32_t vchi_service_close(const VCHI_SERVICE_HANDLE_T handle) +{ + int32_t ret = -1; + SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; + if (service) { + VCHIQ_STATUS_T status = vchiq_close_service(service->handle); + if (status == VCHIQ_SUCCESS) { + service_free(service); + service = NULL; + } + + ret = vchiq_status_to_vchi(status); + } + return ret; +} +EXPORT_SYMBOL(vchi_service_close); + +int32_t vchi_service_destroy(const VCHI_SERVICE_HANDLE_T handle) +{ + int32_t ret = -1; + SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; + if (service) { + VCHIQ_STATUS_T status = vchiq_remove_service(service->handle); + if (status == VCHIQ_SUCCESS) { + service_free(service); + service = NULL; + } + + ret = vchiq_status_to_vchi(status); + } + return ret; +} +EXPORT_SYMBOL(vchi_service_destroy); + +int32_t vchi_service_set_option(const VCHI_SERVICE_HANDLE_T handle, + VCHI_SERVICE_OPTION_T option, + int value) +{ + int32_t ret = -1; + SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; + VCHIQ_SERVICE_OPTION_T vchiq_option; + switch (option) { + case VCHI_SERVICE_OPTION_TRACE: + vchiq_option = VCHIQ_SERVICE_OPTION_TRACE; + break; + case VCHI_SERVICE_OPTION_SYNCHRONOUS: + vchiq_option = VCHIQ_SERVICE_OPTION_SYNCHRONOUS; + break; + default: + service = NULL; + break; + } + if (service) { + VCHIQ_STATUS_T status = + vchiq_set_service_option(service->handle, + vchiq_option, + value); + + ret = vchiq_status_to_vchi(status); + } + return ret; +} +EXPORT_SYMBOL(vchi_service_set_option); + +int32_t vchi_get_peer_version( const VCHI_SERVICE_HANDLE_T handle, short *peer_version ) +{ + int32_t ret = -1; + SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; + if(service) + { + VCHIQ_STATUS_T status = vchiq_get_peer_version(service->handle, peer_version); + ret = vchiq_status_to_vchi( status ); + } + return ret; +} +EXPORT_SYMBOL(vchi_get_peer_version); + +/* ---------------------------------------------------------------------- + * read a uint32_t from buffer. + * network format is defined to be little endian + * -------------------------------------------------------------------- */ +uint32_t +vchi_readbuf_uint32(const void *_ptr) +{ + const unsigned char *ptr = _ptr; + return ptr[0] | (ptr[1] << 8) | (ptr[2] << 16) | (ptr[3] << 24); +} + +/* ---------------------------------------------------------------------- + * write a uint32_t to buffer. + * network format is defined to be little endian + * -------------------------------------------------------------------- */ +void +vchi_writebuf_uint32(void *_ptr, uint32_t value) +{ + unsigned char *ptr = _ptr; + ptr[0] = (unsigned char)((value >> 0) & 0xFF); + ptr[1] = (unsigned char)((value >> 8) & 0xFF); + ptr[2] = (unsigned char)((value >> 16) & 0xFF); + ptr[3] = (unsigned char)((value >> 24) & 0xFF); +} + +/* ---------------------------------------------------------------------- + * read a uint16_t from buffer. + * network format is defined to be little endian + * -------------------------------------------------------------------- */ +uint16_t +vchi_readbuf_uint16(const void *_ptr) +{ + const unsigned char *ptr = _ptr; + return ptr[0] | (ptr[1] << 8); +} + +/* ---------------------------------------------------------------------- + * write a uint16_t into the buffer. + * network format is defined to be little endian + * -------------------------------------------------------------------- */ +void +vchi_writebuf_uint16(void *_ptr, uint16_t value) +{ + unsigned char *ptr = _ptr; + ptr[0] = (value >> 0) & 0xFF; + ptr[1] = (value >> 8) & 0xFF; +} + +/*********************************************************** + * Name: vchi_service_use + * + * Arguments: const VCHI_SERVICE_HANDLE_T handle + * + * Description: Routine to increment refcount on a service + * + * Returns: void + * + ***********************************************************/ +int32_t vchi_service_use(const VCHI_SERVICE_HANDLE_T handle) +{ + int32_t ret = -1; + SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; + if (service) + ret = vchiq_status_to_vchi(vchiq_use_service(service->handle)); + return ret; +} +EXPORT_SYMBOL(vchi_service_use); + +/*********************************************************** + * Name: vchi_service_release + * + * Arguments: const VCHI_SERVICE_HANDLE_T handle + * + * Description: Routine to decrement refcount on a service + * + * Returns: void + * + ***********************************************************/ +int32_t vchi_service_release(const VCHI_SERVICE_HANDLE_T handle) +{ + int32_t ret = -1; + SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle; + if (service) + ret = vchiq_status_to_vchi( + vchiq_release_service(service->handle)); + return ret; +} +EXPORT_SYMBOL(vchi_service_release); |