diff options
Diffstat (limited to 'drivers/dsp/syslink/procmgr/procmgr.c')
| -rw-r--r-- | drivers/dsp/syslink/procmgr/procmgr.c | 784 |
1 files changed, 784 insertions, 0 deletions
diff --git a/drivers/dsp/syslink/procmgr/procmgr.c b/drivers/dsp/syslink/procmgr/procmgr.c new file mode 100644 index 00000000000..187f100b4a4 --- /dev/null +++ b/drivers/dsp/syslink/procmgr/procmgr.c @@ -0,0 +1,784 @@ +/* + * procmgr.c + * + * Syslink driver support functions for TI OMAP processors. + * + * Copyright (C) 2009-2010 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. + */ + +#include <linux/types.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/vmalloc.h> +#include <linux/slab.h> +#include <asm/atomic.h> + +/* Module level headers */ +#include <procmgr.h> +#include "procdefs.h" +#include "processor.h" +#include <syslink/atomic_linux.h> + +/* ================================ + * Macros and types + * ================================ + */ +/*! @brief Macro to make a correct module magic number with refCount */ +#define PROCMGR_MAKE_MAGICSTAMP(x) ((PROCMGR_MODULEID << 12u) | (x)) + +/* + * ProcMgr Module state object + */ +struct proc_mgr_module_object { + atomic_t ref_count; + u32 config_size; + /* Size of configuration structure */ + struct proc_mgr_config cfg; + /* ProcMgr configuration structure */ + struct proc_mgr_config def_cfg; + /* Default module configuration */ + struct proc_mgr_params def_inst_params; + /* Default parameters for the ProcMgr instances */ + struct proc_mgr_attach_params def_attach_params; + /* Default parameters for the ProcMgr attach function */ + struct mutex *gate_handle; + /* handle of gate to be used for local thread safety */ + void *proc_handles[MULTIPROC_MAXPROCESSORS]; + /* Array of handles of ProcMgr instances */ +}; + +/* + * ProcMgr instance object + */ +struct proc_mgr_object { + u16 proc_id; + /* Processor ID associated with this ProcMgr. */ + struct processor_object *proc_handle; + /* Processor ID of the processor being represented by this instance. */ + void *loader_handle; + /*!< Handle to the Loader object associated with this ProcMgr. */ + void *pwr_handle; + /*!< Handle to the PwrMgr object associated with this ProcMgr. */ + /*!< Processor ID of the processor being represented by this instance */ + struct proc_mgr_params params; + /* ProcMgr instance params structure */ + struct proc_mgr_attach_params attach_params; + /* ProcMgr attach params structure */ + u32 file_id; + /*!< File ID of the loaded static executable */ + u16 num_mem_entries; + /* Number of valid memory entries */ + struct proc_mgr_addr_info mem_entries[PROCMGR_MAX_MEMORY_REGIONS]; + /* Configuration of memory regions */ +}; + +static struct proc_mgr_module_object proc_mgr_obj_state = { + .config_size = sizeof(struct proc_mgr_config), + .def_cfg.gate_handle = NULL, + .gate_handle = NULL, + .def_inst_params.proc_handle = NULL, + .def_attach_params.boot_mode = PROC_MGR_BOOTMODE_BOOT, +}; + + +/*====================================== + * Function to get the default configuration for the ProcMgr + * module. + * +* This function can be called by the application to get their +* configuration parameter to ProcMgr_setup filled in by the +* ProcMgr module with the default parameters. If the user does +* not wish to make any change in the default parameters, this API +* is not required to be called. + */ +void proc_mgr_get_config(struct proc_mgr_config *cfg) +{ + BUG_ON(cfg == NULL); + memcpy(cfg, &proc_mgr_obj_state.def_cfg, + sizeof(struct proc_mgr_config)); + return; +} +EXPORT_SYMBOL(proc_mgr_get_config); + +/* + * Function to setup the ProcMgr module. + * + *This function sets up the ProcMgr module. This function must + *be called before any other instance-level APIs can be invoked. + *Module-level configuration needs to be provided to this + *function. If the user wishes to change some specific config + *parameters, then ProcMgr_getConfig can be called to get the + *configuration filled with the default values. After this, only + *the required configuration values can be changed. If the user + *does not wish to make any change in the default parameters, the + *application can simply call ProcMgr_setup with NULL parameters. + *The default parameters would get automatically used. + */ +int proc_mgr_setup(struct proc_mgr_config *cfg) +{ + int retval = 0; + struct proc_mgr_config tmp_cfg; + + /* This sets the refCount variable is not initialized, upper 16 bits is + * written with module Id to ensure correctness of refCount variable. + */ + atomic_cmpmask_and_set(&proc_mgr_obj_state.ref_count, + PROCMGR_MAKE_MAGICSTAMP(0), PROCMGR_MAKE_MAGICSTAMP(0)); + + if (atomic_inc_return(&proc_mgr_obj_state.ref_count) + != PROCMGR_MAKE_MAGICSTAMP(1u)) + return 0; + if (cfg == NULL) { + proc_mgr_get_config(&tmp_cfg); + cfg = &tmp_cfg; + } + if (cfg->gate_handle != NULL) { + proc_mgr_obj_state.gate_handle = cfg->gate_handle; + } else { + /* User has not provided any gate handle, so create a + *default handle. + */ + proc_mgr_obj_state.gate_handle = kmalloc(sizeof(struct mutex), + GFP_KERNEL); + mutex_init(proc_mgr_obj_state.gate_handle); + } + memcpy(&proc_mgr_obj_state.cfg, cfg, sizeof(struct proc_mgr_config)); + /* Initialize the procHandles array. */ + memset(&proc_mgr_obj_state.proc_handles, 0, + (sizeof(void *) * MULTIPROC_MAXPROCESSORS)); + return retval; +} +EXPORT_SYMBOL(proc_mgr_setup); + +/*================================== + * Function to destroy the ProcMgr module. + * + * Once this function is called, other ProcMgr module APIs, except + * for the proc_mgr_get_config API cannot be called anymore. + */ +int proc_mgr_destroy(void) +{ + int retval = 0; + int i; + + if (atomic_cmpmask_and_lt(&(proc_mgr_obj_state.ref_count), + PROCMGR_MAKE_MAGICSTAMP(0), PROCMGR_MAKE_MAGICSTAMP(1)) + == true) { + pr_err("proc_mgr_destroy: Error - module not initialized\n"); + return -EFAULT; + } + if (atomic_dec_return(&proc_mgr_obj_state.ref_count) + == PROCMGR_MAKE_MAGICSTAMP(0)) { + + /* Check if any ProcMgr instances have not been deleted so far + *. If not,delete them + */ + for (i = 0 ; i < MULTIPROC_MAXPROCESSORS; i++) { + if (proc_mgr_obj_state.proc_handles[i] != NULL) + proc_mgr_delete + (&(proc_mgr_obj_state.proc_handles[i])); + } + + mutex_destroy(proc_mgr_obj_state.gate_handle); + kfree(proc_mgr_obj_state.gate_handle); + /* Decrease the refCount */ + atomic_set(&proc_mgr_obj_state.ref_count, + PROCMGR_MAKE_MAGICSTAMP(0)); + } + return retval;; +} +EXPORT_SYMBOL(proc_mgr_destroy); + +/*===================================== + * Function to initialize the parameters for the ProcMgr instance. + * + * This function can be called by the application to get their + * configuration parameter to ProcMgr_create filled in by the + * ProcMgr module with the default parameters. + */ +void proc_mgr_params_init(void *handle, struct proc_mgr_params *params) +{ + struct proc_mgr_object *proc_handle = (struct proc_mgr_object *)handle; + + if (WARN_ON(params == NULL)) + goto exit; + if (atomic_cmpmask_and_lt(&(proc_mgr_obj_state.ref_count), + PROCMGR_MAKE_MAGICSTAMP(0), PROCMGR_MAKE_MAGICSTAMP(1)) + == true) { + pr_err("proc_mgr_params_init: Error - module not initialized\n"); + } + if (handle == NULL) { + memcpy(params, &(proc_mgr_obj_state.def_inst_params), + sizeof(struct proc_mgr_params)); + } else { + /* Return updated ProcMgr instance specific parameters. */ + memcpy(params, &(proc_handle->params), + sizeof(struct proc_mgr_params)); + } +exit: + return; +} +EXPORT_SYMBOL(proc_mgr_params_init); + +/*===================================== + * Function to create a ProcMgr object for a specific slave + * processor. + * + * This function creates an instance of the ProcMgr module and + * returns an instance handle, which is used to access the + * specified slave processor. The processor ID specified here is + * the ID of the slave processor as configured with the MultiProc + * module. + * Instance-level configuration needs to be provided to this + * function. If the user wishes to change some specific config + * parameters, then struct proc_mgr_params_init can be called to get the + * configuration filled with the default values. After this, only + * the required configuration values can be changed. For this + * API, the params argument is not optional, since the user needs + * to provide some essential values such as loader, PwrMgr and + * Processor instances to be used with this ProcMgr instance. + */ +void *proc_mgr_create(u16 proc_id, const struct proc_mgr_params *params) +{ + struct proc_mgr_object *handle = NULL; + + BUG_ON(!IS_VALID_PROCID(proc_id)); + BUG_ON(params == NULL); + BUG_ON(params->proc_handle == NULL); + if (atomic_cmpmask_and_lt(&(proc_mgr_obj_state.ref_count), + PROCMGR_MAKE_MAGICSTAMP(0), PROCMGR_MAKE_MAGICSTAMP(1)) + == true) { + pr_err("proc_mgr_create: Error - module not initialized\n"); + return NULL; + } + if (proc_mgr_obj_state.proc_handles[proc_id] != NULL) { + handle = proc_mgr_obj_state.proc_handles[proc_id]; + pr_warn("proc_mgr_create:" + "Processor already exists for specified" + "%d proc_id, handle = 0x%x\n", proc_id, (u32)handle); + return handle; + } + WARN_ON(mutex_lock_interruptible(proc_mgr_obj_state.gate_handle)); + handle = (struct proc_mgr_object *) + vmalloc(sizeof(struct proc_mgr_object)); + BUG_ON(handle == NULL); + memset(handle, 0, sizeof(struct proc_mgr_object)); + memcpy(&(handle->params), params, sizeof(struct proc_mgr_params)); + handle->proc_id = proc_id; + handle->proc_handle = params->proc_handle; + handle->loader_handle = params->loader_handle; + handle->pwr_handle = params->pwr_handle; + proc_mgr_obj_state.proc_handles[proc_id] = handle; + mutex_unlock(proc_mgr_obj_state.gate_handle); + return handle; +} +EXPORT_SYMBOL(proc_mgr_create); + +/*=================================== + * Function to delete a ProcMgr object for a specific slave + * processor. + * + * Once this function is called, other ProcMgr instance level APIs + * that require the instance handle cannot be called. + * + */ +int +proc_mgr_delete(void **handle_ptr) +{ + int retval = 0; + struct proc_mgr_object *handle; + + BUG_ON(handle_ptr == NULL); + if (atomic_cmpmask_and_lt(&(proc_mgr_obj_state.ref_count), + PROCMGR_MAKE_MAGICSTAMP(0), PROCMGR_MAKE_MAGICSTAMP(1)) + == true) { + pr_err("proc_mgr_delete: Error - module not initialized\n"); + return -EFAULT; + } + + handle = (struct proc_mgr_object *)(*handle_ptr); + WARN_ON(mutex_lock_interruptible(proc_mgr_obj_state.gate_handle)); + proc_mgr_obj_state.proc_handles[handle->proc_id] = NULL; + vfree(handle); + *handle_ptr = NULL; + mutex_unlock(proc_mgr_obj_state.gate_handle); + return retval; +} +EXPORT_SYMBOL(proc_mgr_delete); + +/*====================================== + * Function to open a handle to an existing ProcMgr object handling + * the proc_id. + * + * This function returns a handle to an existing ProcMgr instance + * created for this proc_id. It enables other entities to access + * and use this ProcMgr instance. + */ +int proc_mgr_open(void **handle_ptr, u16 proc_id) +{ + int retval = 0; + + BUG_ON(handle_ptr == NULL); + BUG_ON(!IS_VALID_PROCID(proc_id)); + if (atomic_cmpmask_and_lt(&(proc_mgr_obj_state.ref_count), + PROCMGR_MAKE_MAGICSTAMP(0), PROCMGR_MAKE_MAGICSTAMP(1)) + == true) { + pr_err("proc_mgr_open: Error - module not initialized\n"); + return -EFAULT; + } + + WARN_ON(mutex_lock_interruptible(proc_mgr_obj_state.gate_handle)); + *handle_ptr = proc_mgr_obj_state.proc_handles[proc_id]; + mutex_unlock(proc_mgr_obj_state.gate_handle); + return retval; +} +EXPORT_SYMBOL(proc_mgr_open); + +/*===================================== + * Function to close this handle to the ProcMgr instance. + * + * This function closes the handle to the ProcMgr instance + * obtained through proc_mgr_open call made earlier. + */ +int proc_mgr_close(void *handle) +{ + int retval = 0; + + BUG_ON(handle == NULL); + if (atomic_cmpmask_and_lt(&(proc_mgr_obj_state.ref_count), + PROCMGR_MAKE_MAGICSTAMP(0), PROCMGR_MAKE_MAGICSTAMP(1)) + == true) { + pr_err("proc_mgr_close: Error - module not initialized\n"); + return -EFAULT; + } + /* Nothing to be done for closing the handle. */ + return retval; +} +EXPORT_SYMBOL(proc_mgr_close); + +/*======================================== + * Function to initialize the parameters for the ProcMgr attach + * function. + * + * This function can be called by the application to get their + * configuration parameter to proc_mgr_attach filled in by the + * ProcMgr module with the default parameters. If the user does + * not wish to make any change in the default parameters, this API + * is not required to be called. + */ +void proc_mgr_get_attach_params(void *handle, + struct proc_mgr_attach_params *params) +{ + struct proc_mgr_object *proc_mgr_handle = + (struct proc_mgr_object *)handle; + BUG_ON(params == NULL); + if (atomic_cmpmask_and_lt(&(proc_mgr_obj_state.ref_count), + PROCMGR_MAKE_MAGICSTAMP(0), PROCMGR_MAKE_MAGICSTAMP(1)) + == true) { + pr_err("proc_mgr_get_attach_params:" + "Error - module not initialized\n"); + } + if (handle == NULL) { + memcpy(params, &(proc_mgr_obj_state.def_attach_params), + sizeof(struct proc_mgr_attach_params)); + } else { + /* Return updated ProcMgr instance specific parameters. */ + memcpy(params, &(proc_mgr_handle->attach_params), + sizeof(struct proc_mgr_attach_params)); + } + return; +} +EXPORT_SYMBOL(proc_mgr_get_attach_params); + +/* + * Function to attach the client to the specified slave and also + * initialize the slave (if required). + * + * This function attaches to an instance of the ProcMgr module and + * performs any hardware initialization required to power up the + * slave device. This function also performs the required state + * transitions for this ProcMgr instance to ensure that the local + * object representing the slave device correctly indicates the + * state of the slave device. Depending on the slave boot mode + * being used, the slave may be powered up, in reset, or even + * running state. + * Configuration parameters need to be provided to this + * function. If the user wishes to change some specific config + * parameters, then proc_mgr_get_attach_params can be called to get + * the configuration filled with the default values. After this, + * only the required configuration values can be changed. If the + * user does not wish to make any change in the default parameters, + * the application can simply call proc_mgr_attach with NULL + * parameters. + * The default parameters would get automatically used. + */ +int proc_mgr_attach(void *handle, struct proc_mgr_attach_params *params) +{ + int retval = 0; + struct proc_mgr_object *proc_mgr_handle = + (struct proc_mgr_object *)handle; + struct proc_mgr_attach_params tmp_params; + struct processor_attach_params proc_attach_params; + + if (params == NULL) { + proc_mgr_get_attach_params(handle, &tmp_params); + params = &tmp_params; + } + if (atomic_cmpmask_and_lt(&(proc_mgr_obj_state.ref_count), + PROCMGR_MAKE_MAGICSTAMP(0), PROCMGR_MAKE_MAGICSTAMP(1)) + == true) { + pr_err("proc_mgr_attach: Error - module not initialized\n"); + return -EFAULT; + } + if (WARN_ON(handle == NULL)) { + retval = -EFAULT; + goto exit; + } + if (WARN_ON(params->boot_mode == PROC_MGR_BOOTMODE_ENDVALUE)) { + retval = -EINVAL; + goto exit; + } + WARN_ON(mutex_lock_interruptible(proc_mgr_obj_state.gate_handle)); + /* Copy the user provided values into the instance object. */ + memcpy(&(proc_mgr_handle->attach_params), params, + sizeof(struct proc_mgr_attach_params)); + proc_attach_params.params = params; + proc_attach_params.num_mem_entries = 0; + /* Attach to the specified Processor instance. */ + retval = processor_attach(proc_mgr_handle->proc_handle, + &proc_attach_params); + proc_mgr_handle->num_mem_entries = proc_attach_params.num_mem_entries; + pr_info("proc_mgr_attach:proc_mgr_handle->num_mem_entries = %d\n", + proc_mgr_handle->num_mem_entries); + /* Store memory information in local object.*/ + memcpy(&(proc_mgr_handle->mem_entries), + &(proc_attach_params.mem_entries), + sizeof(proc_mgr_handle->mem_entries)); + mutex_unlock(proc_mgr_obj_state.gate_handle); +exit: + return retval; +} +EXPORT_SYMBOL(proc_mgr_attach); + +/*=================================== + * Function to detach the client from the specified slave and also + * finalze the slave (if required). + * + * This function detaches from an instance of the ProcMgr module + * and performs any hardware finalization required to power down + * the slave device. This function also performs the required state + * transitions for this ProcMgr instance to ensure that the local + * object representing the slave device correctly indicates the + * state of the slave device. Depending on the slave boot mode + * being used, the slave may be powered down, in reset, or left in + * its original state. +*/ +int proc_mgr_detach(void *handle) +{ + int retval = 0; + struct proc_mgr_object *proc_mgr_handle = + (struct proc_mgr_object *)handle; + if (atomic_cmpmask_and_lt(&(proc_mgr_obj_state.ref_count), + PROCMGR_MAKE_MAGICSTAMP(0), PROCMGR_MAKE_MAGICSTAMP(1)) + == true) { + pr_err("proc_mgr_detach: Error - module not initialized\n"); + return -EFAULT; + } + BUG_ON(handle == NULL); + WARN_ON(mutex_lock_interruptible(proc_mgr_obj_state.gate_handle)); + /* Detach from the Processor. */ + retval = processor_detach(proc_mgr_handle->proc_handle); + mutex_unlock(proc_mgr_obj_state.gate_handle); + return retval; +} +EXPORT_SYMBOL(proc_mgr_detach); + +/*=================================== + * Function to get the current state of the slave Processor. + * + * This function gets the state of the slave processor as + * maintained on the master Processor state machine. It does not + * go to the slave processor to get its actual state at the time + * when this API is called. + * + */ +enum proc_mgr_state proc_mgr_get_state(void *handle) +{ + struct proc_mgr_object *proc_mgr_handle = + (struct proc_mgr_object *)handle; + enum proc_mgr_state state = PROC_MGR_STATE_UNKNOWN; + if (atomic_cmpmask_and_lt(&(proc_mgr_obj_state.ref_count), + PROCMGR_MAKE_MAGICSTAMP(0), PROCMGR_MAKE_MAGICSTAMP(1)) + == true) { + pr_err("proc_mgr_get_state: Error - module not initialized\n"); + return -EFAULT; + } + BUG_ON(handle == NULL); + + WARN_ON(mutex_lock_interruptible(proc_mgr_obj_state.gate_handle)); + state = processor_get_state(proc_mgr_handle->proc_handle); + mutex_unlock(proc_mgr_obj_state.gate_handle); + return state; +} +EXPORT_SYMBOL(proc_mgr_get_state); + +/*================================================== + * Function to read from the slave processor's memory. + * + * This function reads from the specified address in the + * processor's address space and copies the required number of + * bytes into the specified buffer. + * It returns the number of bytes actually read in thenum_bytes + * parameter. + */ +int proc_mgr_read(void *handle, u32 proc_addr, u32 *num_bytes, void *buffer) +{ + int retval = 0; + struct proc_mgr_object *proc_mgr_handle = + (struct proc_mgr_object *)handle; + void *addr; + + if (atomic_cmpmask_and_lt(&(proc_mgr_obj_state.ref_count), + PROCMGR_MAKE_MAGICSTAMP(0), PROCMGR_MAKE_MAGICSTAMP(1)) + == true) { + pr_err("proc_mgr_read: Error - module not initialized\n"); + return -EFAULT; + } + BUG_ON(handle == NULL); + BUG_ON(proc_addr == 0); + BUG_ON(num_bytes == NULL); + BUG_ON(buffer == NULL); + + /* Check if the address is already mapped */ + retval = proc_mgr_translate_addr(handle, + (void **) &addr, + PROC_MGR_ADDRTYPE_MASTERKNLVIRT, + (void *) proc_addr, + PROC_MGR_ADDRTYPE_SLAVEVIRT); + + + if (retval >= 0) { + /* Enter critical section protection. */ + WARN_ON(mutex_lock_interruptible( + proc_mgr_obj_state.gate_handle)); + + retval = processor_read(proc_mgr_handle->proc_handle, (u32)addr, + num_bytes, buffer); + + /* Leave critical section protection. */ + mutex_unlock(proc_mgr_obj_state.gate_handle); + } + + WARN_ON(retval < 0); + return retval; +} +EXPORT_SYMBOL(proc_mgr_read); + +/* + * Function to write into the slave processor's memory. + * + * This function writes into the specified address in the + * processor's address space and copies the required number of + * bytes from the specified buffer. + * It returns the number of bytes actually written in thenum_bytes + * parameter. + */ +int proc_mgr_write(void *handle, u32 proc_addr, u32 *num_bytes, void *buffer) +{ + int retval = 0; + struct proc_mgr_object *proc_mgr_handle = + (struct proc_mgr_object *)handle; + if (atomic_cmpmask_and_lt(&(proc_mgr_obj_state.ref_count), + PROCMGR_MAKE_MAGICSTAMP(0), PROCMGR_MAKE_MAGICSTAMP(1)) + == true) { + pr_err("proc_mgr_write: Error - module not initialized\n"); + return -EFAULT; + } + BUG_ON(proc_addr == 0); + BUG_ON(num_bytes == NULL); + BUG_ON(buffer == NULL); + + WARN_ON(mutex_lock_interruptible(proc_mgr_obj_state.gate_handle)); + retval = processor_write(proc_mgr_handle->proc_handle, proc_addr, + num_bytes, buffer); + WARN_ON(retval < 0); + mutex_unlock(proc_mgr_obj_state.gate_handle); + return retval;; +} +EXPORT_SYMBOL(proc_mgr_write); + + +/*=================================== + * Function to perform device-dependent operations. + * + * This function performs control operations supported by the + * as exposed directly by the specific implementation of the + * Processor interface. These commands and their specific argument + * types are used with this function. + */ +int proc_mgr_control(void *handle, int cmd, void *arg) +{ + int retval = 0; + struct proc_mgr_object *proc_mgr_handle + = (struct proc_mgr_object *)handle; + if (atomic_cmpmask_and_lt(&(proc_mgr_obj_state.ref_count), + PROCMGR_MAKE_MAGICSTAMP(0), PROCMGR_MAKE_MAGICSTAMP(1)) + == true) { + pr_err("proc_mgr_control: Error - module not initialized\n"); + return -EFAULT; + } + BUG_ON(handle == NULL); + WARN_ON(mutex_lock_interruptible(proc_mgr_obj_state.gate_handle)); + /* Perform device-dependent control operation. */ + retval = processor_control(proc_mgr_handle->proc_handle, cmd, arg); + WARN_ON(retval < 0); + mutex_unlock(proc_mgr_obj_state.gate_handle); + return retval;; +} +EXPORT_SYMBOL(proc_mgr_control); + +/*======================================== + * Function to translate between two types of address spaces. + * + * This function translates addresses between two types of address + * spaces. The destination and source address types are indicated + * through parameters specified in this function. + */ +int proc_mgr_translate_addr(void *handle, void **dst_addr, + enum proc_mgr_addr_type dst_addr_type, void *src_addr, + enum proc_mgr_addr_type src_addr_type) +{ + int retval = 0; + struct proc_mgr_object *proc_mgr_handle = + (struct proc_mgr_object *)handle; + + if (atomic_cmpmask_and_lt(&(proc_mgr_obj_state.ref_count), + PROCMGR_MAKE_MAGICSTAMP(0), PROCMGR_MAKE_MAGICSTAMP(1)) + == true) { + pr_err("proc_mgr_translate_addr:" + "Error - module not initialized\n"); + return -EFAULT; + } + BUG_ON(dst_addr == NULL); + BUG_ON(handle == NULL); + BUG_ON(dst_addr_type > PROC_MGR_ADDRTYPE_ENDVALUE); + BUG_ON(src_addr == NULL); + BUG_ON(src_addr_type > PROC_MGR_ADDRTYPE_ENDVALUE); + + WARN_ON(mutex_lock_interruptible(proc_mgr_obj_state.gate_handle)); + /* Translate the address. */ + retval = processor_translate_addr(proc_mgr_handle->proc_handle, + dst_addr, dst_addr_type, src_addr, src_addr_type); + WARN_ON(retval < 0); + mutex_unlock(proc_mgr_obj_state.gate_handle); + return retval;; +} +EXPORT_SYMBOL(proc_mgr_translate_addr); + +/*================================= + * Function that registers for notification when the slave + * processor transitions to any of the states specified. + * + * This function allows the user application to register for + * changes in processor state and take actions accordingly. + * + */ +int proc_mgr_register_notify(void *handle, proc_mgr_callback_fxn fxn, + void *args, enum proc_mgr_state state[]) +{ + int retval = 0; + struct proc_mgr_object *proc_mgr_handle + = (struct proc_mgr_object *)handle; + if (atomic_cmpmask_and_lt(&(proc_mgr_obj_state.ref_count), + PROCMGR_MAKE_MAGICSTAMP(0), PROCMGR_MAKE_MAGICSTAMP(1)) + == true) { + pr_err("proc_mgr_register_notify:" + "Error - module not initialized\n"); + return -EFAULT; + } + BUG_ON(handle == NULL); + BUG_ON(fxn == NULL); + WARN_ON(mutex_lock_interruptible(proc_mgr_obj_state.gate_handle)); + retval = processor_register_notify(proc_mgr_handle->proc_handle, fxn, + args, state); + WARN_ON(retval < 0); + mutex_unlock(proc_mgr_obj_state.gate_handle); + return retval; +} +EXPORT_SYMBOL(proc_mgr_register_notify); + +/* + * Function that returns information about the characteristics of + * the slave processor. + */ +int proc_mgr_get_proc_info(void *handle, struct proc_mgr_proc_info *proc_info) +{ + struct proc_mgr_object *proc_mgr_handle = + (struct proc_mgr_object *)handle; + struct processor_object *proc_handle; + + struct proc_mgr_proc_info proc_info_test; + + if (atomic_cmpmask_and_lt(&(proc_mgr_obj_state.ref_count), + PROCMGR_MAKE_MAGICSTAMP(0), PROCMGR_MAKE_MAGICSTAMP(1)) + == true) { + pr_err("proc_mgr_get_proc_info:" + "Error - module not initialized\n"); + return -EFAULT; + } + if (WARN_ON(handle == NULL)) + goto error_exit; + if (WARN_ON(proc_info == NULL)) + goto error_exit; + proc_handle = proc_mgr_handle->proc_handle; + if (WARN_ON(proc_handle == NULL)) + goto error_exit; + + WARN_ON(mutex_lock_interruptible(proc_mgr_obj_state.gate_handle)); + + processor_get_proc_info(proc_handle, &proc_info_test); + /* Return bootMode information. */ + proc_info->boot_mode = proc_mgr_handle->attach_params.boot_mode; + /* Return memory information. */ + proc_info->num_mem_entries = proc_mgr_handle->num_mem_entries; + memcpy(&(proc_info->mem_entries), + &(proc_mgr_handle->mem_entries), + sizeof(proc_mgr_handle->mem_entries)); + mutex_unlock(proc_mgr_obj_state.gate_handle); + return 0; +error_exit: + return -EFAULT; +} +EXPORT_SYMBOL(proc_mgr_get_proc_info); + +/*============================================ + * Function to get virtual to physical address translations + * + * This function retrieves physical entries + * + */ +int proc_mgr_virt_to_phys(void *handle, u32 da, u32 *mapped_entries, + u32 num_of_entries) +{ + int retval = 0; + struct proc_mgr_object *proc_mgr_handle = + (struct proc_mgr_object *)handle; + + WARN_ON(mutex_lock_interruptible(proc_mgr_obj_state.gate_handle)); + + /* Map to host address space. */ + retval = processor_virt_to_phys(proc_mgr_handle->proc_handle, da, + mapped_entries, num_of_entries); + WARN_ON(retval < 0); + mutex_unlock(proc_mgr_obj_state.gate_handle); + return retval;; +} +EXPORT_SYMBOL(proc_mgr_virt_to_phys); |