1*ff233cb5SSergey Matyukevich /* SPDX-License-Identifier: GPL-2.0+ */ 2*ff233cb5SSergey Matyukevich /* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */ 398f44cb0SIgor Mitsyanko 498f44cb0SIgor Mitsyanko #ifndef _QTN_FMAC_SHM_IPC_H_ 598f44cb0SIgor Mitsyanko #define _QTN_FMAC_SHM_IPC_H_ 698f44cb0SIgor Mitsyanko 798f44cb0SIgor Mitsyanko #include <linux/workqueue.h> 898f44cb0SIgor Mitsyanko #include <linux/completion.h> 998f44cb0SIgor Mitsyanko #include <linux/mutex.h> 1098f44cb0SIgor Mitsyanko #include <linux/spinlock.h> 1198f44cb0SIgor Mitsyanko 1298f44cb0SIgor Mitsyanko #include "shm_ipc_defs.h" 1398f44cb0SIgor Mitsyanko 1498f44cb0SIgor Mitsyanko #define QTN_SHM_IPC_ACK_TIMEOUT (2 * HZ) 1598f44cb0SIgor Mitsyanko 1698f44cb0SIgor Mitsyanko struct qtnf_shm_ipc_int { 1798f44cb0SIgor Mitsyanko void (*fn)(void *arg); 1898f44cb0SIgor Mitsyanko void *arg; 1998f44cb0SIgor Mitsyanko }; 2098f44cb0SIgor Mitsyanko 2198f44cb0SIgor Mitsyanko struct qtnf_shm_ipc_rx_callback { 228804ea9eSSergey Matyukevich void (*fn)(void *arg, const u8 __iomem *buf, size_t len); 2398f44cb0SIgor Mitsyanko void *arg; 2498f44cb0SIgor Mitsyanko }; 2598f44cb0SIgor Mitsyanko 2698f44cb0SIgor Mitsyanko enum qtnf_shm_ipc_direction { 2798f44cb0SIgor Mitsyanko QTNF_SHM_IPC_OUTBOUND = BIT(0), 2898f44cb0SIgor Mitsyanko QTNF_SHM_IPC_INBOUND = BIT(1), 2998f44cb0SIgor Mitsyanko }; 3098f44cb0SIgor Mitsyanko 3198f44cb0SIgor Mitsyanko struct qtnf_shm_ipc { 3298f44cb0SIgor Mitsyanko struct qtnf_shm_ipc_region __iomem *shm_region; 3398f44cb0SIgor Mitsyanko enum qtnf_shm_ipc_direction direction; 3498f44cb0SIgor Mitsyanko size_t tx_packet_count; 3598f44cb0SIgor Mitsyanko size_t rx_packet_count; 3698f44cb0SIgor Mitsyanko 3798f44cb0SIgor Mitsyanko size_t tx_timeout_count; 3898f44cb0SIgor Mitsyanko 3998f44cb0SIgor Mitsyanko u8 waiting_for_ack; 4098f44cb0SIgor Mitsyanko 4198f44cb0SIgor Mitsyanko struct qtnf_shm_ipc_int interrupt; 4298f44cb0SIgor Mitsyanko struct qtnf_shm_ipc_rx_callback rx_callback; 4398f44cb0SIgor Mitsyanko 4498f44cb0SIgor Mitsyanko void (*irq_handler)(struct qtnf_shm_ipc *ipc); 4598f44cb0SIgor Mitsyanko 4698f44cb0SIgor Mitsyanko struct workqueue_struct *workqueue; 4798f44cb0SIgor Mitsyanko struct work_struct irq_work; 4898f44cb0SIgor Mitsyanko struct completion tx_completion; 4998f44cb0SIgor Mitsyanko }; 5098f44cb0SIgor Mitsyanko 5198f44cb0SIgor Mitsyanko int qtnf_shm_ipc_init(struct qtnf_shm_ipc *ipc, 5298f44cb0SIgor Mitsyanko enum qtnf_shm_ipc_direction direction, 5398f44cb0SIgor Mitsyanko struct qtnf_shm_ipc_region __iomem *shm_region, 5498f44cb0SIgor Mitsyanko struct workqueue_struct *workqueue, 5598f44cb0SIgor Mitsyanko const struct qtnf_shm_ipc_int *interrupt, 5698f44cb0SIgor Mitsyanko const struct qtnf_shm_ipc_rx_callback *rx_callback); 5798f44cb0SIgor Mitsyanko void qtnf_shm_ipc_free(struct qtnf_shm_ipc *ipc); 5898f44cb0SIgor Mitsyanko int qtnf_shm_ipc_send(struct qtnf_shm_ipc *ipc, const u8 *buf, size_t size); 5998f44cb0SIgor Mitsyanko 6098f44cb0SIgor Mitsyanko static inline void qtnf_shm_ipc_irq_handler(struct qtnf_shm_ipc *ipc) 6198f44cb0SIgor Mitsyanko { 6298f44cb0SIgor Mitsyanko ipc->irq_handler(ipc); 6398f44cb0SIgor Mitsyanko } 6498f44cb0SIgor Mitsyanko 6598f44cb0SIgor Mitsyanko #endif /* _QTN_FMAC_SHM_IPC_H_ */ 66