/*
* Copyright ( c ) 2013 - 2016 Google Inc . All rights reserved
*
* Permission is hereby granted , free of charge , to any person obtaining
* a copy of this software and associated documentation files
* ( the " Software " ) , to deal in the Software without restriction ,
* including without limitation the rights to use , copy , modify , merge ,
* publish , distribute , sublicense , and / or sell copies of the Software ,
* and to permit persons to whom the Software is furnished to do so ,
* subject to the following conditions :
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software .
*
* THE SOFTWARE IS PROVIDED " AS IS " , WITHOUT WARRANTY OF ANY KIND ,
* EXPRESS OR IMPLIED , INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY , FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT .
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM , DAMAGES OR OTHER LIABILITY , WHETHER IN AN ACTION OF CONTRACT ,
* TORT OR OTHERWISE , ARISING FROM , OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE .
*/
#ifndef __SM_H
#define __SM_H
#include <lib/extmem/extmem.h>
#include <lib/sm/smcall.h>
#include <lk/list.h>
#include <lk/reflist.h>
#include <stdbool.h>
#include <stddef.h>
#include <sys/types.h>
#include <uapi/err.h>
#define PRIxNS_ADDR PRIx64
typedef uint64_t ns_addr_t;
typedef uint32_t ns_size_t;
struct ns_page_info {
uint64_t attr;
};
struct smc32_args {
uint32_t smc_nr;
uint32_t params[SMC_NUM_PARAMS];
ext_mem_obj_id_t client_id;
};
#define SMC32_ARGS_INITIAL_VALUE(args) \
{ 0 , {0 }, 0 }
typedef long (*smc32_handler_t)(struct smc32_args* args);
struct smc32_entity {
smc32_handler_t fastcall_handler;
smc32_handler_t nopcall_handler;
smc32_handler_t stdcall_handler;
};
/* Get selected api version. */
uint32_t sm_get_api_version(void );
/**
* sm_check_and_lock_api_version - Check and lock api version
* @ api_version_wanted : Version wanted .
*
* Check if the currently selected api version is greater or equal to
* @ api_version_wanted and prevent changing the selected api version to a
* a version that would change that answer .
*
* Return : true if currently connected client support @ api_version_wanted .
*/
bool sm_check_and_lock_api_version(uint32_t api_version_wanted);
/* Schedule Secure OS */
long sm_sched_secure(struct smc32_args* args);
/* Schedule Non-secure OS */
void sm_sched_nonsecure(long retval, struct smc32_args* args);
/* Handle an interrupt */
enum handler_return sm_handle_irq(void );
void sm_handle_fiq(void );
/* Version */
long smc_sm_api_version(struct smc32_args* args);
/* SMP mode */
long smc_get_smp_max_cpus(struct smc32_args* args);
/* Interrupt controller irq/fiq support */
long smc_intc_get_next_irq(struct smc32_args* args);
/* return 0 to enter ns-fiq handler, return non-0 to return */
status_t sm_intc_fiq_enter(void );
enum handler_return sm_intc_enable_interrupts(void );
/*
* Ring the doorbell or equivalent interrupt on the primary scheduler
* so that it enqueues a NOP for Trusty .
*/
void sm_intc_raise_doorbell_irq(void );
/* Get the argument block passed in by the bootloader */
status_t sm_get_boot_args(void ** boot_argsp, size_t* args_sizep);
/* Release bootloader arg block */
void sm_put_boot_args(void );
/* Register handler(s) for an entity */
status_t sm_register_entity(uint entity_nr, struct smc32_entity* entity);
status_t sm_decode_ns_memory_attr(struct ns_page_info* pinf,
ns_addr_t* ppa,
uint* pmmu);
/**
* struct sm_vm_notifier - VM notifier to call on VM events .
* @ node : List node in notifiers list .
* @ client_id : VM identifier .
* @ destroy : Destruction event callback .
*
* The & struct sm_vm_notifier object must exist at least until both the
* @ destroy callback is called or sm_vm_notifier_unregister ( ) has returned .
* If sm_vm_notifier_unregister ( ) has returned , the callback will not be called
* and it is safe to free the object .
*
* If the client intends to call sm_vm_notifier_unregister ( ) at any point
* after the callback returns , it should keep the notifier object alive
* until after the last call to sm_vm_notifier_unregister ( ) .
* Note that all such invocations will just return % ERR_NOT_FOUND .
*/
struct sm_vm_notifier {
struct list_node node;
ext_mem_obj_id_t client_id;
status_t (*destroy)(struct sm_vm_notifier*);
};
/**
* sm_vm_notifier_init ( ) - Initialize a notifier .
* @ notif : Pointer to notifier
* @ client_id : VM identifier to set in notifier .
* @ destroy : Destruction callback .
*/
static inline status_t sm_vm_notifier_init(
struct sm_vm_notifier* notif,
ext_mem_obj_id_t client_id,
status_t (*destroy)(struct sm_vm_notifier*)) {
if (!notif) {
return ERR_INVALID_ARGS;
}
if (!destroy) {
return ERR_INVALID_ARGS;
}
list_clear_node(¬if->node);
notif->client_id = client_id;
notif->destroy = destroy;
return NO_ERROR;
}
/**
* sm_vm_notifier_register ( ) - Register a notifier for VM events .
* @ notif : Pointer to notifier .
*
* Return :
* * % 0 in case of success
* * % ERR_INVALID_ARGS if @ notif is invalid
* * % ERR_NOT_FOUND if the VM has not been created
* * % ERR_BAD_STATE if the VM is already present and in an invalid state
*
* The contents of @ notif should be initialized using
* sm_vm_notifier_init ( ) .
*
* The function does not take ownership of @ notif .
*/
status_t sm_vm_notifier_register(struct sm_vm_notifier* notif);
/**
* sm_vm_notifier_unregister ( ) - Unregister a notifier for VM events .
* @ notif : Pointer to notifier .
*
* Return :
* * % 0 in case of success
* * % ERR_INVALID_ARGS if @ notif is invalid
* * % ERR_NOT_FOUND if the notifier has not been previously registered
*
* The function will block until the destruction callback finishes
* if it is already running on another thread . If the destruction callback
* is not already running , it will not be called .
*/
status_t sm_vm_notifier_unregister(struct sm_vm_notifier* notif);
struct sm_vm;
/**
* sm_vm_get ( ) - Get a & struct sm_vm for a given client id .
* @ client_id : Id of the referenced VM .
* @ ref : Pointer to uninitialized & struct obj_ref object .
* Must not be % NULL .
* @ out_vm : Output pointer to receive a pointer to the VM object .
*
* Return :
* * % 0 in case of success
* * % ERR_INVALID_ARGS if @ ref or @ out_vm are invalid .
* * % ERR_NOT_FOUND if the VM does not exist
*/
status_t sm_vm_get(ext_mem_obj_id_t client_id,
struct obj_ref* ref,
struct sm_vm** out_vm);
/**
* sm_vm_add_ref ( ) - Add a reference to a VM .
* @ vm : Pointer to referenced VM object . Must not be % NULL .
* @ ref : Pointer to uninitialized & struct obj_ref object .
* Must not be % NULL .
*/
void sm_vm_add_ref(struct sm_vm* vm, struct obj_ref* ref);
/**
* sm_vm_del_ref ( ) - Delete a reference to a VM .
* @ vm : Pointer to referenced VM object . Must not be % NULL .
* @ ref : Pointer to valid & struct obj_ref object . Must not be % NULL .
*/
void sm_vm_del_ref(struct sm_vm* vm, struct obj_ref* ref);
/**
* sm_vm_get_id ( ) - Get the client ID of a VM .
* @ vm : Pointer to VM object . Must not be % NULL .
*
* Return : the VM ID .
*/
ext_mem_client_id_t sm_vm_get_id(struct sm_vm* vm);
/**
* sm_memlog_notify_clients ( ) - Notify all memlog clients of new data .
* @ raise_doorbell : Whether to raise the doorbell IRQ . If % false , the function
* will only check and update its internal state .
*
* Notifies all memlog clients that there might be new log data to process ,
* if there is any .
*/
void sm_memlog_notify_clients(bool raise_doorbell);
#endif /* __SM_H */
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