41,6 → 41,7 |
#include <stdio.h> |
#include <errno.h> |
#include <bool.h> |
#include <fibril_sync.h> |
#include <stdlib.h> |
#include <string.h> |
#include <ipc/devmap.h> |
61,6 → 62,8 |
ipcarg_t phone; |
/** Device driver name */ |
char *name; |
/** Fibril mutex for list of devices owned by this driver */ |
fibril_mutex_t devices_mutex; |
} devmap_driver_t; |
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/** Info about registered device |
91,6 → 94,17 |
LIST_INITIALIZE(drivers_list); |
LIST_INITIALIZE(pending_req); |
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/* Locking order: |
* drivers_list_mutex |
* devices_list_mutex |
* (devmap_driver_t *)->devices_mutex |
* create_handle_mutex |
**/ |
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static FIBRIL_MUTEX_INITIALIZE(devices_list_mutex); |
static FIBRIL_MUTEX_INITIALIZE(drivers_list_mutex); |
static FIBRIL_MUTEX_INITIALIZE(create_handle_mutex); |
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static dev_handle_t last_handle = 0; |
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static dev_handle_t devmap_create_handle(void) |
99,7 → 113,9 |
* and implement some version of LRU algorithm, avoid overflow |
*/ |
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fibril_mutex_lock(&create_handle_mutex); |
last_handle++; |
fibril_mutex_unlock(&create_handle_mutex); |
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return last_handle; |
} |
133,6 → 149,8 |
*/ |
static devmap_device_t *devmap_device_find_handle(dev_handle_t handle) |
{ |
fibril_mutex_lock(&devices_list_mutex); |
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link_t *item = (&devices_list)->next; |
devmap_device_t *device = NULL; |
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143,11 → 161,15 |
item = item->next; |
} |
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if (item == &devices_list) |
if (item == &devices_list) { |
fibril_mutex_unlock(&devices_list_mutex); |
return NULL; |
} |
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device = list_get_instance(item, devmap_device_t, devices); |
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fibril_mutex_unlock(&devices_list_mutex); |
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return device; |
} |
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235,10 → 257,13 |
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driver->name[name_size] = 0; |
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/* Initialize mutex for list of devices owned by this driver */ |
fibril_mutex_initialize(&driver->devices_mutex); |
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/* |
* Initialize list of asociated devices |
*/ |
list_initialize(&(driver->devices)); |
list_initialize(&driver->devices); |
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/* |
* Create connection to the driver |
261,6 → 286,8 |
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list_initialize(&(driver->drivers)); |
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fibril_mutex_lock(&drivers_list_mutex); |
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/* TODO: |
* check that no driver with name equal to driver->name is registered |
*/ |
269,6 → 296,7 |
* Insert new driver into list of registered drivers |
*/ |
list_append(&(driver->drivers), &drivers_list); |
fibril_mutex_unlock(&drivers_list_mutex); |
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ipc_answer_0(iid, EOK); |
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285,6 → 313,8 |
if (driver == NULL) |
return EEXISTS; |
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fibril_mutex_lock(&drivers_list_mutex); |
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if (driver->phone != 0) |
ipc_hangup(driver->phone); |
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291,6 → 321,10 |
/* Remove it from list of drivers */ |
list_remove(&(driver->drivers)); |
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/* Unregister all its devices */ |
fibril_mutex_lock(&devices_list_mutex); |
fibril_mutex_lock(&driver->devices_mutex); |
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while (!list_empty(&(driver->devices))) { |
devmap_device_t *device = list_get_instance(driver->devices.next, |
devmap_device_t, driver_devices); |
297,6 → 331,10 |
devmap_device_unregister_core(device); |
} |
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fibril_mutex_unlock(&driver->devices_mutex); |
fibril_mutex_unlock(&devices_list_mutex); |
fibril_mutex_unlock(&drivers_list_mutex); |
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/* free name and driver */ |
if (driver->name != NULL) |
free(driver->name); |
310,8 → 348,6 |
/** Process pending lookup requests */ |
static void process_pending_lookup(void) |
{ |
async_serialize_start(); |
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link_t *cur; |
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loop: |
330,8 → 366,6 |
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goto loop; |
} |
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async_serialize_end(); |
} |
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385,9 → 419,12 |
list_initialize(&(device->devices)); |
list_initialize(&(device->driver_devices)); |
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fibril_mutex_lock(&devices_list_mutex); |
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/* Check that device with such name is not already registered */ |
if (NULL != devmap_device_find_name(device->name)) { |
printf(NAME ": Device '%s' already registered\n", device->name); |
fibril_mutex_unlock(&devices_list_mutex); |
free(device->name); |
free(device); |
ipc_answer_0(iid, EEXISTS); |
402,8 → 439,14 |
/* Insert device into list of all devices */ |
list_append(&device->devices, &devices_list); |
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/* Insert device into list of devices that belog to one driver */ |
fibril_mutex_lock(&device->driver->devices_mutex); |
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list_append(&device->driver_devices, &device->driver->devices); |
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fibril_mutex_unlock(&device->driver->devices_mutex); |
fibril_mutex_unlock(&devices_list_mutex); |
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ipc_answer_1(iid, EOK, device->handle); |
} |
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555,11 → 598,15 |
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static void devmap_get_count(ipc_callid_t iid, ipc_call_t *icall) |
{ |
fibril_mutex_lock(&devices_list_mutex); |
ipc_answer_1(iid, EOK, list_count(&devices_list)); |
fibril_mutex_unlock(&devices_list_mutex); |
} |
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static void devmap_get_devices(ipc_callid_t iid, ipc_call_t *icall) |
{ |
fibril_mutex_lock(&devices_list_mutex); |
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ipc_callid_t callid; |
size_t size; |
if (!ipc_data_read_receive(&callid, &size)) { |
603,6 → 650,8 |
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free(desc); |
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fibril_mutex_unlock(&devices_list_mutex); |
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ipc_answer_1(iid, EOK, pos); |
} |
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626,6 → 675,8 |
list_initialize(&(device->devices)); |
list_initialize(&(device->driver_devices)); |
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fibril_mutex_lock(&devices_list_mutex); |
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/* Get unique device handle */ |
device->handle = devmap_create_handle(); |
device->driver = NULL; |
633,6 → 684,8 |
/* Insert device into list of all devices */ |
list_append(&device->devices, &devices_list); |
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fibril_mutex_unlock(&devices_list_mutex); |
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return true; |
} |
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655,12 → 708,9 |
ipc_call_t call; |
ipc_callid_t callid = async_get_call(&call); |
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async_serialize_start(); |
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switch (IPC_GET_METHOD(call)) { |
case IPC_M_PHONE_HUNGUP: |
cont = false; |
async_serialize_end(); |
continue; |
case DEVMAP_DRIVER_UNREGISTER: |
if (NULL == driver) |
686,8 → 736,6 |
if (!(callid & IPC_CALLID_NOTIFICATION)) |
ipc_answer_0(callid, ENOENT); |
} |
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async_serialize_end(); |
} |
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if (NULL != driver) { |
694,13 → 742,8 |
/* |
* Unregister the device driver and all its devices. |
*/ |
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async_serialize_start(); |
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devmap_driver_unregister(driver); |
driver = NULL; |
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async_serialize_end(); |
} |
} |
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717,12 → 760,9 |
ipc_call_t call; |
ipc_callid_t callid = async_get_call(&call); |
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async_serialize_start(); |
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switch (IPC_GET_METHOD(call)) { |
case IPC_M_PHONE_HUNGUP: |
cont = false; |
async_serialize_end(); |
continue; |
case DEVMAP_DEVICE_GET_HANDLE: |
devmap_get_handle(callid, &call); |
740,8 → 780,6 |
if (!(callid & IPC_CALLID_NOTIFICATION)) |
ipc_answer_0(callid, ENOENT); |
} |
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async_serialize_end(); |
} |
} |
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