1
2
3
4#ifndef _QTN_FMAC_SHM_IPC_H_
5#define _QTN_FMAC_SHM_IPC_H_
6
7#include <linux/workqueue.h>
8#include <linux/completion.h>
9#include <linux/mutex.h>
10#include <linux/spinlock.h>
11
12#include "shm_ipc_defs.h"
13
14#define QTN_SHM_IPC_ACK_TIMEOUT (2 * HZ)
15
16struct qtnf_shm_ipc_int {
17 void (*fn)(void *arg);
18 void *arg;
19};
20
21struct qtnf_shm_ipc_rx_callback {
22 void (*fn)(void *arg, const u8 __iomem *buf, size_t len);
23 void *arg;
24};
25
26enum qtnf_shm_ipc_direction {
27 QTNF_SHM_IPC_OUTBOUND = BIT(0),
28 QTNF_SHM_IPC_INBOUND = BIT(1),
29};
30
31struct qtnf_shm_ipc {
32 struct qtnf_shm_ipc_region __iomem *shm_region;
33 enum qtnf_shm_ipc_direction direction;
34 size_t tx_packet_count;
35 size_t rx_packet_count;
36
37 size_t tx_timeout_count;
38
39 u8 waiting_for_ack;
40
41 struct qtnf_shm_ipc_int interrupt;
42 struct qtnf_shm_ipc_rx_callback rx_callback;
43
44 void (*irq_handler)(struct qtnf_shm_ipc *ipc);
45
46 struct workqueue_struct *workqueue;
47 struct work_struct irq_work;
48 struct completion tx_completion;
49};
50
51int qtnf_shm_ipc_init(struct qtnf_shm_ipc *ipc,
52 enum qtnf_shm_ipc_direction direction,
53 struct qtnf_shm_ipc_region __iomem *shm_region,
54 struct workqueue_struct *workqueue,
55 const struct qtnf_shm_ipc_int *interrupt,
56 const struct qtnf_shm_ipc_rx_callback *rx_callback);
57void qtnf_shm_ipc_free(struct qtnf_shm_ipc *ipc);
58int qtnf_shm_ipc_send(struct qtnf_shm_ipc *ipc, const u8 *buf, size_t size);
59
60static inline void qtnf_shm_ipc_irq_handler(struct qtnf_shm_ipc *ipc)
61{
62 ipc->irq_handler(ipc);
63}
64
65#endif
66
