23f7911bfe
Client drivers may successfully register with a doorbell even before doorbell capids are known to Linux. However, we do need to know capids for send, read, reset, and mask functions. Here, we mirror the behavior of message queues by placing the calling thread in a waitqueue until the capids are populated by RM. Change-Id: Ie1cf98d0fe344bb2a878bb655db78705d4292ff9 Signed-off-by: Elliot Berman <eberman@codeaurora.org>
97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2020, The Linux Foundation. All rights reserved.
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*
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*/
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#ifndef __HH_DBL_H
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#define __HH_DBL_H
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#include "hh_common.h"
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typedef void (*dbl_rx_cb_t)(int irq, void *priv_data);
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enum hh_dbl_label {
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HH_DBL_TUI_LABEL,
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HH_DBL_TUI_NEURON_BLK0,
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HH_DBL_TUI_NEURON_BLK1,
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HH_DBL_TUI_QRTR,
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HH_DBL_LABEL_MAX
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};
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/* Possible flags to pass for send, set_mask, read, reset */
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#define HH_DBL_NONBLOCK BIT(32)
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#if IS_ENABLED(CONFIG_HH_DBL)
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void *hh_dbl_tx_register(enum hh_dbl_label label);
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void *hh_dbl_rx_register(enum hh_dbl_label label, dbl_rx_cb_t rx_cb,
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void *priv);
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int hh_dbl_tx_unregister(void *dbl_client_desc);
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int hh_dbl_rx_unregister(void *dbl_client_desc);
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int hh_dbl_send(void *dbl_client_desc, uint64_t *newflags,
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const unsigned long flags);
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int hh_dbl_set_mask(void *dbl_client_desc, hh_dbl_flags_t enable_mask,
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hh_dbl_flags_t ack_mask, const unsigned long flags);
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int hh_dbl_read_and_clean(void *dbl_client_desc, hh_dbl_flags_t *clear_flags,
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const unsigned long flags);
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int hh_dbl_reset(void *dbl_client_desc, const unsigned long flags);
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int hh_dbl_populate_cap_info(enum hh_dbl_label label, u64 cap_id,
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int direction, int rx_irq);
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#else
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static inline void *hh_dbl_tx_register(enum hh_dbl_label label)
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{
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return ERR_PTR(-ENODEV);
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}
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static inline void *hh_dbl_rx_register(enum hh_dbl_label label,
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dbl_rx_cb_t rx_cb,
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void *priv)
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{
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return ERR_PTR(-ENODEV);
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}
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static inline int hh_dbl_tx_unregister(void *dbl_client_desc)
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{
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return ERR_PTR(-ENODEV);
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}
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static inline int hh_dbl_rx_unregister(void *dbl_client_desc)
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{
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return ERR_PTR(-ENODEV);
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}
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static inline int hh_dbl_send(void *dbl_client_desc, uint64_t *newflags,
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const unsigned long flags)
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{
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return -EINVAL;
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}
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static inline int hh_dbl_set_mask(void *dbl_client_desc,
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hh_dbl_flags_t enable_mask,
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hh_dbl_flags_t ack_mask,
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const unsigned long flags)
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{
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return -EINVAL;
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}
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static inline int hh_dbl_read_and_clean(void *dbl_client_desc,
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hh_dbl_flags_t *clear_flags,
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const unsigned long flags)
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{
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return -EINVAL;
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}
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static inline int hh_dbl_reset(void *dbl_client_desc, const unsigned long flags)
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{
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return -EINVAL;
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}
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static inline int hh_dbl_populate_cap_info(enum hh_dbl_label label, u64 cap_id,
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int direction, int rx_irq)
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{
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return -EINVAL;
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}
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#endif
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#endif
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