Lines Matching refs:proxy_dev
33 struct proxy_dev { struct
60 static void vtpm_proxy_delete_device(struct proxy_dev *proxy_dev); argument
80 struct proxy_dev *proxy_dev = filp->private_data; in vtpm_proxy_fops_read() local
84 sig = wait_event_interruptible(proxy_dev->wq, in vtpm_proxy_fops_read()
85 proxy_dev->req_len != 0 || in vtpm_proxy_fops_read()
86 !(proxy_dev->state & STATE_OPENED_FLAG)); in vtpm_proxy_fops_read()
90 mutex_lock(&proxy_dev->buf_lock); in vtpm_proxy_fops_read()
92 if (!(proxy_dev->state & STATE_OPENED_FLAG)) { in vtpm_proxy_fops_read()
93 mutex_unlock(&proxy_dev->buf_lock); in vtpm_proxy_fops_read()
97 len = proxy_dev->req_len; in vtpm_proxy_fops_read()
100 mutex_unlock(&proxy_dev->buf_lock); in vtpm_proxy_fops_read()
106 rc = copy_to_user(buf, proxy_dev->buffer, len); in vtpm_proxy_fops_read()
107 memset(proxy_dev->buffer, 0, len); in vtpm_proxy_fops_read()
108 proxy_dev->req_len = 0; in vtpm_proxy_fops_read()
111 proxy_dev->state |= STATE_WAIT_RESPONSE_FLAG; in vtpm_proxy_fops_read()
113 mutex_unlock(&proxy_dev->buf_lock); in vtpm_proxy_fops_read()
135 struct proxy_dev *proxy_dev = filp->private_data; in vtpm_proxy_fops_write() local
137 mutex_lock(&proxy_dev->buf_lock); in vtpm_proxy_fops_write()
139 if (!(proxy_dev->state & STATE_OPENED_FLAG)) { in vtpm_proxy_fops_write()
140 mutex_unlock(&proxy_dev->buf_lock); in vtpm_proxy_fops_write()
144 if (count > sizeof(proxy_dev->buffer) || in vtpm_proxy_fops_write()
145 !(proxy_dev->state & STATE_WAIT_RESPONSE_FLAG)) { in vtpm_proxy_fops_write()
146 mutex_unlock(&proxy_dev->buf_lock); in vtpm_proxy_fops_write()
150 proxy_dev->state &= ~STATE_WAIT_RESPONSE_FLAG; in vtpm_proxy_fops_write()
152 proxy_dev->req_len = 0; in vtpm_proxy_fops_write()
154 if (copy_from_user(proxy_dev->buffer, buf, count)) { in vtpm_proxy_fops_write()
155 mutex_unlock(&proxy_dev->buf_lock); in vtpm_proxy_fops_write()
159 proxy_dev->resp_len = count; in vtpm_proxy_fops_write()
161 mutex_unlock(&proxy_dev->buf_lock); in vtpm_proxy_fops_write()
163 wake_up_interruptible(&proxy_dev->wq); in vtpm_proxy_fops_write()
178 struct proxy_dev *proxy_dev = filp->private_data; in vtpm_proxy_fops_poll() local
181 poll_wait(filp, &proxy_dev->wq, wait); in vtpm_proxy_fops_poll()
185 mutex_lock(&proxy_dev->buf_lock); in vtpm_proxy_fops_poll()
187 if (proxy_dev->req_len) in vtpm_proxy_fops_poll()
190 if (!(proxy_dev->state & STATE_OPENED_FLAG)) in vtpm_proxy_fops_poll()
193 mutex_unlock(&proxy_dev->buf_lock); in vtpm_proxy_fops_poll()
207 struct proxy_dev *proxy_dev = filp->private_data; in vtpm_proxy_fops_open() local
209 proxy_dev->state |= STATE_OPENED_FLAG; in vtpm_proxy_fops_open()
218 static void vtpm_proxy_fops_undo_open(struct proxy_dev *proxy_dev) in vtpm_proxy_fops_undo_open() argument
220 mutex_lock(&proxy_dev->buf_lock); in vtpm_proxy_fops_undo_open()
222 proxy_dev->state &= ~STATE_OPENED_FLAG; in vtpm_proxy_fops_undo_open()
224 mutex_unlock(&proxy_dev->buf_lock); in vtpm_proxy_fops_undo_open()
227 wake_up_interruptible(&proxy_dev->wq); in vtpm_proxy_fops_undo_open()
240 struct proxy_dev *proxy_dev = filp->private_data; in vtpm_proxy_fops_release() local
244 vtpm_proxy_delete_device(proxy_dev); in vtpm_proxy_fops_release()
274 struct proxy_dev *proxy_dev = dev_get_drvdata(&chip->dev); in vtpm_proxy_tpm_op_recv() local
278 mutex_lock(&proxy_dev->buf_lock); in vtpm_proxy_tpm_op_recv()
280 if (!(proxy_dev->state & STATE_OPENED_FLAG)) { in vtpm_proxy_tpm_op_recv()
281 mutex_unlock(&proxy_dev->buf_lock); in vtpm_proxy_tpm_op_recv()
285 len = proxy_dev->resp_len; in vtpm_proxy_tpm_op_recv()
294 memcpy(buf, proxy_dev->buffer, len); in vtpm_proxy_tpm_op_recv()
295 proxy_dev->resp_len = 0; in vtpm_proxy_tpm_op_recv()
298 mutex_unlock(&proxy_dev->buf_lock); in vtpm_proxy_tpm_op_recv()
337 struct proxy_dev *proxy_dev = dev_get_drvdata(&chip->dev); in vtpm_proxy_tpm_op_send() local
340 if (count > sizeof(proxy_dev->buffer)) { in vtpm_proxy_tpm_op_send()
343 count, sizeof(proxy_dev->buffer)); in vtpm_proxy_tpm_op_send()
347 if (!(proxy_dev->state & STATE_DRIVER_COMMAND) && in vtpm_proxy_tpm_op_send()
351 mutex_lock(&proxy_dev->buf_lock); in vtpm_proxy_tpm_op_send()
353 if (!(proxy_dev->state & STATE_OPENED_FLAG)) { in vtpm_proxy_tpm_op_send()
354 mutex_unlock(&proxy_dev->buf_lock); in vtpm_proxy_tpm_op_send()
358 proxy_dev->resp_len = 0; in vtpm_proxy_tpm_op_send()
360 proxy_dev->req_len = count; in vtpm_proxy_tpm_op_send()
361 memcpy(proxy_dev->buffer, buf, count); in vtpm_proxy_tpm_op_send()
363 proxy_dev->state &= ~STATE_WAIT_RESPONSE_FLAG; in vtpm_proxy_tpm_op_send()
365 mutex_unlock(&proxy_dev->buf_lock); in vtpm_proxy_tpm_op_send()
367 wake_up_interruptible(&proxy_dev->wq); in vtpm_proxy_tpm_op_send()
379 struct proxy_dev *proxy_dev = dev_get_drvdata(&chip->dev); in vtpm_proxy_tpm_op_status() local
381 if (proxy_dev->resp_len) in vtpm_proxy_tpm_op_status()
389 struct proxy_dev *proxy_dev = dev_get_drvdata(&chip->dev); in vtpm_proxy_tpm_req_canceled() local
392 mutex_lock(&proxy_dev->buf_lock); in vtpm_proxy_tpm_req_canceled()
394 ret = !(proxy_dev->state & STATE_OPENED_FLAG); in vtpm_proxy_tpm_req_canceled()
396 mutex_unlock(&proxy_dev->buf_lock); in vtpm_proxy_tpm_req_canceled()
406 struct proxy_dev *proxy_dev = dev_get_drvdata(&chip->dev); in vtpm_proxy_request_locality() local
418 proxy_dev->state |= STATE_DRIVER_COMMAND; in vtpm_proxy_request_locality()
424 proxy_dev->state &= ~STATE_DRIVER_COMMAND; in vtpm_proxy_request_locality()
461 struct proxy_dev *proxy_dev = container_of(work, struct proxy_dev, in vtpm_proxy_work() local
465 rc = tpm_chip_register(proxy_dev->chip); in vtpm_proxy_work()
467 vtpm_proxy_fops_undo_open(proxy_dev); in vtpm_proxy_work()
469 proxy_dev->state |= STATE_REGISTERED_FLAG; in vtpm_proxy_work()
478 static void vtpm_proxy_work_stop(struct proxy_dev *proxy_dev) in vtpm_proxy_work_stop() argument
480 vtpm_proxy_fops_undo_open(proxy_dev); in vtpm_proxy_work_stop()
481 flush_work(&proxy_dev->work); in vtpm_proxy_work_stop()
487 static inline void vtpm_proxy_work_start(struct proxy_dev *proxy_dev) in vtpm_proxy_work_start() argument
489 queue_work(workqueue, &proxy_dev->work); in vtpm_proxy_work_start()
495 static struct proxy_dev *vtpm_proxy_create_proxy_dev(void) in vtpm_proxy_create_proxy_dev()
497 struct proxy_dev *proxy_dev; in vtpm_proxy_create_proxy_dev() local
501 proxy_dev = kzalloc(sizeof(*proxy_dev), GFP_KERNEL); in vtpm_proxy_create_proxy_dev()
502 if (proxy_dev == NULL) in vtpm_proxy_create_proxy_dev()
505 init_waitqueue_head(&proxy_dev->wq); in vtpm_proxy_create_proxy_dev()
506 mutex_init(&proxy_dev->buf_lock); in vtpm_proxy_create_proxy_dev()
507 INIT_WORK(&proxy_dev->work, vtpm_proxy_work); in vtpm_proxy_create_proxy_dev()
514 dev_set_drvdata(&chip->dev, proxy_dev); in vtpm_proxy_create_proxy_dev()
516 proxy_dev->chip = chip; in vtpm_proxy_create_proxy_dev()
518 return proxy_dev; in vtpm_proxy_create_proxy_dev()
521 kfree(proxy_dev); in vtpm_proxy_create_proxy_dev()
529 static inline void vtpm_proxy_delete_proxy_dev(struct proxy_dev *proxy_dev) in vtpm_proxy_delete_proxy_dev() argument
531 put_device(&proxy_dev->chip->dev); /* frees chip */ in vtpm_proxy_delete_proxy_dev()
532 kfree(proxy_dev); in vtpm_proxy_delete_proxy_dev()
544 struct proxy_dev *proxy_dev; in vtpm_proxy_create_device() local
551 proxy_dev = vtpm_proxy_create_proxy_dev(); in vtpm_proxy_create_device()
552 if (IS_ERR(proxy_dev)) in vtpm_proxy_create_device()
553 return ERR_CAST(proxy_dev); in vtpm_proxy_create_device()
555 proxy_dev->flags = vtpm_new_dev->flags; in vtpm_proxy_create_device()
564 file = anon_inode_getfile("[vtpms]", &vtpm_proxy_fops, proxy_dev, in vtpm_proxy_create_device()
575 if (proxy_dev->flags & VTPM_PROXY_FLAG_TPM2) in vtpm_proxy_create_device()
576 proxy_dev->chip->flags |= TPM_CHIP_FLAG_TPM2; in vtpm_proxy_create_device()
578 vtpm_proxy_work_start(proxy_dev); in vtpm_proxy_create_device()
581 vtpm_new_dev->major = MAJOR(proxy_dev->chip->dev.devt); in vtpm_proxy_create_device()
582 vtpm_new_dev->minor = MINOR(proxy_dev->chip->dev.devt); in vtpm_proxy_create_device()
583 vtpm_new_dev->tpm_num = proxy_dev->chip->dev_num; in vtpm_proxy_create_device()
591 vtpm_proxy_delete_proxy_dev(proxy_dev); in vtpm_proxy_create_device()
599 static void vtpm_proxy_delete_device(struct proxy_dev *proxy_dev) in vtpm_proxy_delete_device() argument
601 vtpm_proxy_work_stop(proxy_dev); in vtpm_proxy_delete_device()
608 vtpm_proxy_fops_undo_open(proxy_dev); in vtpm_proxy_delete_device()
610 if (proxy_dev->state & STATE_REGISTERED_FLAG) in vtpm_proxy_delete_device()
611 tpm_chip_unregister(proxy_dev->chip); in vtpm_proxy_delete_device()
613 vtpm_proxy_delete_proxy_dev(proxy_dev); in vtpm_proxy_delete_device()