1/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
2/*
3 * Copyright (c) 2011, 2012, Qualcomm Atheros Communications Inc.
4 * Copyright (c) 2014, I2SE GmbH
5 */
6
7/* Qualcomm Atheros SPI register definition.
8 *
9 * This module is designed to define the Qualcomm Atheros SPI register
10 * placeholders;
11 */
12
13#ifndef _QCA_SPI_H
14#define _QCA_SPI_H
15
16#include <linux/netdevice.h>
17#include <linux/sched.h>
18#include <linux/skbuff.h>
19#include <linux/spi/spi.h>
20#include <linux/types.h>
21
22#include "qca_7k_common.h"
23
24#define QCASPI_DRV_VERSION "0.2.7-i"
25#define QCASPI_DRV_NAME "qcaspi"
26
27#define QCASPI_GOOD_SIGNATURE 0xAA55
28
29#define QCASPI_TX_RING_MAX_LEN 10
30#define QCASPI_TX_RING_MIN_LEN 2
31#define QCASPI_RX_MAX_FRAMES 4
32
33/* sync related constants */
34#define QCASPI_SYNC_UNKNOWN 0
35#define QCASPI_SYNC_RESET 1
36#define QCASPI_SYNC_READY 2
37
38#define QCASPI_RESET_TIMEOUT 10
39
40/* sync events */
41#define QCASPI_EVENT_UPDATE 0
42#define QCASPI_EVENT_CPUON 1
43
44struct tx_ring {
45 struct sk_buff *skb[QCASPI_TX_RING_MAX_LEN];
46 u16 head;
47 u16 tail;
48 u16 size;
49 u16 count;
50};
51
52struct qcaspi_stats {
53 u64 trig_reset;
54 u64 device_reset;
55 u64 reset_timeout;
56 u64 read_err;
57 u64 write_err;
58 u64 read_buf_err;
59 u64 write_buf_err;
60 u64 out_of_mem;
61 u64 write_buf_miss;
62 u64 ring_full;
63 u64 spi_err;
64 u64 write_verify_failed;
65 u64 buf_avail_err;
66 u64 bad_signature;
67};
68
69struct qcaspi {
70 struct net_device *net_dev;
71 struct spi_device *spi_dev;
72 struct task_struct *spi_thread;
73
74 struct tx_ring txr;
75 struct qcaspi_stats stats;
76
77 u8 *rx_buffer;
78 u32 buffer_size;
79 u8 sync;
80
81 struct qcafrm_handle frm_handle;
82 struct sk_buff *rx_skb;
83
84 unsigned int intr_req;
85 unsigned int intr_svc;
86 u16 reset_count;
87
88#ifdef CONFIG_DEBUG_FS
89 struct dentry *device_root;
90#endif
91
92 /* user configurable options */
93 u32 clkspeed;
94 u8 legacy_mode;
95 u16 burst_len;
96};
97
98#endif /* _QCA_SPI_H */
99

source code of linux/drivers/net/ethernet/qualcomm/qca_spi.h