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 | |
44 | struct 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 | |
52 | struct 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 | |
69 | struct 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 | |