119 struct sbefifo {  struct
135 	struct sbefifo		*sbefifo;  argument
149 	struct sbefifo *sbefifo = container_of(dev, struct sbefifo, dev);  in timeout_show()  local
151 	return sysfs_emit(buf, "%d\n", sbefifo->timed_out ? 1 : 0);  in timeout_show()
264 static int sbefifo_regr(struct sbefifo *sbefifo, int reg, u32 *word)  in sbefifo_regr()  argument
269 	rc = fsi_device_read(sbefifo->fsi_dev, reg, &raw_word,  in sbefifo_regr()
279 static int sbefifo_regw(struct sbefifo *sbefifo, int reg, u32 word)  in sbefifo_regw()  argument
283 	return fsi_device_write(sbefifo->fsi_dev, reg, &raw_word,  in sbefifo_regw()
287 static int sbefifo_check_sbe_state(struct sbefifo *sbefifo)  in sbefifo_check_sbe_state()  argument
293 	rc = fsi_slave_read(sbefifo->fsi_dev->slave, CFAM_GP_MBOX_SBM_ADDR,  in sbefifo_check_sbe_state()
322 		sbefifo->async_ffdc = true;  in sbefifo_check_sbe_state()
328 static int sbefifo_down_read(struct sbefifo *sbefifo, __be32 *word)  in sbefifo_down_read()  argument
330 	return fsi_device_read(sbefifo->fsi_dev, SBEFIFO_DOWN, word,  in sbefifo_down_read()
334 static int sbefifo_up_write(struct sbefifo *sbefifo, __be32 word)  in sbefifo_up_write()  argument
336 	return fsi_device_write(sbefifo->fsi_dev, SBEFIFO_UP, &word,  in sbefifo_up_write()
340 static int sbefifo_request_reset(struct sbefifo *sbefifo)  in sbefifo_request_reset()  argument
342 	struct device *dev = &sbefifo->fsi_dev->dev;  in sbefifo_request_reset()
350 	sbefifo->broken = true;  in sbefifo_request_reset()
353 	rc = sbefifo_regw(sbefifo, SBEFIFO_UP | SBEFIFO_REQ_RESET, 1);  in sbefifo_request_reset()
362 		rc = sbefifo_regr(sbefifo, SBEFIFO_UP | SBEFIFO_STS, &status);  in sbefifo_request_reset()
371 			sbefifo->broken = false;  in sbefifo_request_reset()
382 static int sbefifo_cleanup_hw(struct sbefifo *sbefifo)  in sbefifo_cleanup_hw()  argument
384 	struct device *dev = &sbefifo->fsi_dev->dev;  in sbefifo_cleanup_hw()
389 	rc = sbefifo_check_sbe_state(sbefifo);  in sbefifo_cleanup_hw()
396 	if (sbefifo->broken)  in sbefifo_cleanup_hw()
399 	rc = sbefifo_regr(sbefifo, SBEFIFO_UP | SBEFIFO_STS, &up_status);  in sbefifo_cleanup_hw()
404 		sbefifo->broken = true;  in sbefifo_cleanup_hw()
408 	rc = sbefifo_regr(sbefifo, SBEFIFO_DOWN | SBEFIFO_STS, &down_status);  in sbefifo_cleanup_hw()
413 		sbefifo->broken = true;  in sbefifo_cleanup_hw()
420 		rc = sbefifo_regw(sbefifo, SBEFIFO_DOWN, SBEFIFO_PERFORM_RESET);  in sbefifo_cleanup_hw()
422 			sbefifo->broken = true;  in sbefifo_cleanup_hw()
426 		sbefifo->broken = false;  in sbefifo_cleanup_hw()
447 	return sbefifo_request_reset(sbefifo);  in sbefifo_cleanup_hw()
450 static int sbefifo_wait(struct sbefifo *sbefifo, bool up,  in sbefifo_wait()  argument
453 	struct device *dev = &sbefifo->fsi_dev->dev;  in sbefifo_wait()
466 		rc = sbefifo_regr(sbefifo, addr, &sts);  in sbefifo_wait()
480 		sysfs_notify(&sbefifo->dev.kobj, NULL, dev_attr_timeout.attr.name);  in sbefifo_wait()
481 		sbefifo->timed_out = true;  in sbefifo_wait()
488 	sbefifo->timed_out = false;  in sbefifo_wait()
494 static int sbefifo_send_command(struct sbefifo *sbefifo,  in sbefifo_send_command()  argument
497 	struct device *dev = &sbefifo->fsi_dev->dev;  in sbefifo_send_command()
510 		rc = sbefifo_wait(sbefifo, true, &status, timeout);  in sbefifo_send_command()
513 		timeout = msecs_to_jiffies(sbefifo->timeout_in_cmd_ms);  in sbefifo_send_command()
523 			rc = sbefifo_up_write(sbefifo, *(command++));  in sbefifo_send_command()
535 		rc = sbefifo_wait(sbefifo, true, &status, timeout);  in sbefifo_send_command()
541 	rc = sbefifo_regw(sbefifo, SBEFIFO_UP | SBEFIFO_EOT_RAISE, 0);  in sbefifo_send_command()
547 static int sbefifo_read_response(struct sbefifo *sbefifo, struct iov_iter *response)  in sbefifo_read_response()  argument
549 	struct device *dev = &sbefifo->fsi_dev->dev;  in sbefifo_read_response()
559 	timeout = msecs_to_jiffies(sbefifo->timeout_start_rsp_ms);  in sbefifo_read_response()
562 		rc = sbefifo_wait(sbefifo, false, &status, timeout);  in sbefifo_read_response()
578 			rc = sbefifo_down_read(sbefifo, &data);  in sbefifo_read_response()
594 					sbefifo->broken = true;  in sbefifo_read_response()
598 				rc = sbefifo_regw(sbefifo,  in sbefifo_read_response()
608 					sbefifo->broken = true;  in sbefifo_read_response()
633 static int sbefifo_do_command(struct sbefifo *sbefifo,  in sbefifo_do_command()  argument
638 	int rc = sbefifo_send_command(sbefifo, command, cmd_len);  in sbefifo_do_command()
643 	return sbefifo_read_response(sbefifo, response);  in sbefifo_do_command()
646 static void sbefifo_collect_async_ffdc(struct sbefifo *sbefifo)  in sbefifo_collect_async_ffdc()  argument
648 	struct device *dev = &sbefifo->fsi_dev->dev;  in sbefifo_collect_async_ffdc()
656 	sbefifo->async_ffdc = false;  in sbefifo_collect_async_ffdc()
667 	rc = sbefifo_do_command(sbefifo, cmd, 2, &ffdc_iter);  in sbefifo_collect_async_ffdc()
687 static int __sbefifo_submit(struct sbefifo *sbefifo,  in __sbefifo_submit()  argument
691 	struct device *dev = &sbefifo->fsi_dev->dev;  in __sbefifo_submit()
694 	if (sbefifo->dead)  in __sbefifo_submit()
704 	rc = sbefifo_cleanup_hw(sbefifo);  in __sbefifo_submit()
709 	if (sbefifo->async_ffdc)  in __sbefifo_submit()
710 		sbefifo_collect_async_ffdc(sbefifo);  in __sbefifo_submit()
712 	rc = sbefifo_do_command(sbefifo, command, cmd_len, response);  in __sbefifo_submit()
721         sbefifo_request_reset(sbefifo);  in __sbefifo_submit()
741 	struct sbefifo *sbefifo;  in sbefifo_submit()  local
749 	sbefifo = dev_get_drvdata(dev);  in sbefifo_submit()
750 	if (!sbefifo)  in sbefifo_submit()
752 	if (WARN_ON_ONCE(sbefifo->magic != SBEFIFO_MAGIC))  in sbefifo_submit()
764 	rc = mutex_lock_interruptible(&sbefifo->lock);  in sbefifo_submit()
767 	rc = __sbefifo_submit(sbefifo, command, cmd_len, &resp_iter);  in sbefifo_submit()
768 	mutex_unlock(&sbefifo->lock);  in sbefifo_submit()
792 	struct sbefifo *sbefifo = container_of(inode->i_cdev, struct sbefifo, cdev);  in sbefifo_user_open()  local
800 	user->sbefifo = sbefifo;  in sbefifo_user_open()
817 	struct sbefifo *sbefifo;  in sbefifo_user_read()  local
825 	sbefifo = user->sbefifo;  in sbefifo_user_read()
848 	rc = mutex_lock_interruptible(&sbefifo->lock);  in sbefifo_user_read()
851 	sbefifo->timeout_in_cmd_ms = user->cmd_timeout_ms;  in sbefifo_user_read()
852 	sbefifo->timeout_start_rsp_ms = user->read_timeout_ms;  in sbefifo_user_read()
853 	rc = __sbefifo_submit(sbefifo, user->pending_cmd, cmd_len, &resp_iter);  in sbefifo_user_read()
854 	sbefifo->timeout_start_rsp_ms = SBEFIFO_TIMEOUT_START_RSP;  in sbefifo_user_read()
855 	sbefifo->timeout_in_cmd_ms = SBEFIFO_TIMEOUT_IN_CMD;  in sbefifo_user_read()
856 	mutex_unlock(&sbefifo->lock);  in sbefifo_user_read()
872 	struct sbefifo *sbefifo;  in sbefifo_user_write()  local
877 	sbefifo = user->sbefifo;  in sbefifo_user_write()
909 		rc = mutex_lock_interruptible(&sbefifo->lock);  in sbefifo_user_write()
912 		rc = sbefifo_request_reset(user->sbefifo);  in sbefifo_user_write()
913 		mutex_unlock(&sbefifo->lock);  in sbefifo_user_write()
947 	struct device *dev = &user->sbefifo->dev;  in sbefifo_cmd_timeout()
966 	struct device *dev = &user->sbefifo->dev;  in sbefifo_read_timeout()
1015 	struct sbefifo *sbefifo = container_of(dev, struct sbefifo, dev);  in sbefifo_free()  local
1017 	put_device(&sbefifo->fsi_dev->dev);  in sbefifo_free()
1018 	kfree(sbefifo);  in sbefifo_free()
1028 	struct sbefifo *sbefifo;  in sbefifo_probe()  local
1036 	sbefifo = kzalloc(sizeof(*sbefifo), GFP_KERNEL);  in sbefifo_probe()
1037 	if (!sbefifo)  in sbefifo_probe()
1042 		kfree(sbefifo);  in sbefifo_probe()
1046 	sbefifo->magic = SBEFIFO_MAGIC;  in sbefifo_probe()
1047 	sbefifo->fsi_dev = fsi_dev;  in sbefifo_probe()
1048 	dev_set_drvdata(dev, sbefifo);  in sbefifo_probe()
1049 	mutex_init(&sbefifo->lock);  in sbefifo_probe()
1050 	sbefifo->timeout_in_cmd_ms = SBEFIFO_TIMEOUT_IN_CMD;  in sbefifo_probe()
1051 	sbefifo->timeout_start_rsp_ms = SBEFIFO_TIMEOUT_START_RSP;  in sbefifo_probe()
1054 	sbefifo->dev.type = &fsi_cdev_type;  in sbefifo_probe()
1055 	sbefifo->dev.parent = dev;  in sbefifo_probe()
1056 	sbefifo->dev.release = sbefifo_free;  in sbefifo_probe()
1057 	device_initialize(&sbefifo->dev);  in sbefifo_probe()
1060 	rc = fsi_get_new_minor(fsi_dev, fsi_dev_sbefifo, &sbefifo->dev.devt, &didx);  in sbefifo_probe()
1064 	dev_set_name(&sbefifo->dev, "sbefifo%d", didx);  in sbefifo_probe()
1065 	cdev_init(&sbefifo->cdev, &sbefifo_fops);  in sbefifo_probe()
1066 	rc = cdev_device_add(&sbefifo->cdev, &sbefifo->dev);  in sbefifo_probe()
1069 			rc, dev_name(&sbefifo->dev));  in sbefifo_probe()
1076 			 dev_name(&sbefifo->dev), child_idx++);  in sbefifo_probe()
1083 	device_create_file(&sbefifo->dev, &dev_attr_timeout);  in sbefifo_probe()
1087 	fsi_free_minor(sbefifo->dev.devt);  in sbefifo_probe()
1089 	put_device(&sbefifo->dev);  in sbefifo_probe()
1106 	struct sbefifo *sbefifo = dev_get_drvdata(dev);  in sbefifo_remove()  local
1110 	device_remove_file(&sbefifo->dev, &dev_attr_timeout);  in sbefifo_remove()
1112 	mutex_lock(&sbefifo->lock);  in sbefifo_remove()
1113 	sbefifo->dead = true;  in sbefifo_remove()
1114 	mutex_unlock(&sbefifo->lock);  in sbefifo_remove()
1116 	cdev_device_del(&sbefifo->cdev, &sbefifo->dev);  in sbefifo_remove()
1117 	fsi_free_minor(sbefifo->dev.devt);  in sbefifo_remove()
1119 	put_device(&sbefifo->dev);  in sbefifo_remove()