1 | /* |
2 | * Copyright (c) 2011, 2012, Qualcomm Atheros Communications Inc. |
3 | * Copyright (c) 2014, I2SE GmbH |
4 | * |
5 | * Permission to use, copy, modify, and/or distribute this software |
6 | * for any purpose with or without fee is hereby granted, provided |
7 | * that the above copyright notice and this permission notice appear |
8 | * in all copies. |
9 | * |
10 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
11 | * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
12 | * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL |
13 | * THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR |
14 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM |
15 | * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, |
16 | * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
17 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
18 | */ |
19 | |
20 | /* Qualcomm Atheros SPI register definition. |
21 | * |
22 | * This module is designed to define the Qualcomm Atheros SPI register |
23 | * placeholders; |
24 | */ |
25 | |
26 | #ifndef _QCA_SPI_H |
27 | #define _QCA_SPI_H |
28 | |
29 | #include <linux/netdevice.h> |
30 | #include <linux/sched.h> |
31 | #include <linux/skbuff.h> |
32 | #include <linux/spi/spi.h> |
33 | #include <linux/types.h> |
34 | |
35 | #include "qca_7k_common.h" |
36 | |
37 | #define QCASPI_DRV_VERSION "0.2.7-i" |
38 | #define QCASPI_DRV_NAME "qcaspi" |
39 | |
40 | #define QCASPI_GOOD_SIGNATURE 0xAA55 |
41 | |
42 | #define TX_RING_MAX_LEN 10 |
43 | #define TX_RING_MIN_LEN 2 |
44 | |
45 | /* sync related constants */ |
46 | #define QCASPI_SYNC_UNKNOWN 0 |
47 | #define QCASPI_SYNC_RESET 1 |
48 | #define QCASPI_SYNC_READY 2 |
49 | |
50 | #define QCASPI_RESET_TIMEOUT 10 |
51 | |
52 | /* sync events */ |
53 | #define QCASPI_EVENT_UPDATE 0 |
54 | #define QCASPI_EVENT_CPUON 1 |
55 | |
56 | struct tx_ring { |
57 | struct sk_buff *skb[TX_RING_MAX_LEN]; |
58 | u16 head; |
59 | u16 tail; |
60 | u16 size; |
61 | u16 count; |
62 | }; |
63 | |
64 | struct qcaspi_stats { |
65 | u64 trig_reset; |
66 | u64 device_reset; |
67 | u64 reset_timeout; |
68 | u64 read_err; |
69 | u64 write_err; |
70 | u64 read_buf_err; |
71 | u64 write_buf_err; |
72 | u64 out_of_mem; |
73 | u64 write_buf_miss; |
74 | u64 ring_full; |
75 | u64 spi_err; |
76 | u64 write_verify_failed; |
77 | u64 buf_avail_err; |
78 | u64 bad_signature; |
79 | }; |
80 | |
81 | struct qcaspi { |
82 | struct net_device *net_dev; |
83 | struct spi_device *spi_dev; |
84 | struct task_struct *spi_thread; |
85 | |
86 | struct tx_ring txr; |
87 | struct qcaspi_stats stats; |
88 | |
89 | u8 *rx_buffer; |
90 | u32 buffer_size; |
91 | u8 sync; |
92 | |
93 | struct qcafrm_handle frm_handle; |
94 | struct sk_buff *rx_skb; |
95 | |
96 | unsigned int intr_req; |
97 | unsigned int intr_svc; |
98 | u16 reset_count; |
99 | |
100 | #ifdef CONFIG_DEBUG_FS |
101 | struct dentry *device_root; |
102 | #endif |
103 | |
104 | /* user configurable options */ |
105 | u32 clkspeed; |
106 | u8 legacy_mode; |
107 | u16 burst_len; |
108 | }; |
109 | |
110 | #endif /* _QCA_SPI_H */ |
111 | |