1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2008 Christian Lamparter <chunkeey@web.de>
4 *
5 * This driver is a port from stlc45xx:
6 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
7 */
8
9#ifndef P54SPI_H
10#define P54SPI_H
11
12#include <linux/mutex.h>
13#include <linux/list.h>
14#include <net/mac80211.h>
15
16#include "p54.h"
17
18/* Bit 15 is read/write bit; ON = READ, OFF = WRITE */
19#define SPI_ADRS_READ_BIT_15 0x8000
20
21#define SPI_ADRS_ARM_INTERRUPTS 0x00
22#define SPI_ADRS_ARM_INT_EN 0x04
23
24#define SPI_ADRS_HOST_INTERRUPTS 0x08
25#define SPI_ADRS_HOST_INT_EN 0x0c
26#define SPI_ADRS_HOST_INT_ACK 0x10
27
28#define SPI_ADRS_GEN_PURP_1 0x14
29#define SPI_ADRS_GEN_PURP_2 0x18
30
31#define SPI_ADRS_DEV_CTRL_STAT 0x26 /* high word */
32
33#define SPI_ADRS_DMA_DATA 0x28
34
35#define SPI_ADRS_DMA_WRITE_CTRL 0x2c
36#define SPI_ADRS_DMA_WRITE_LEN 0x2e
37#define SPI_ADRS_DMA_WRITE_BASE 0x30
38
39#define SPI_ADRS_DMA_READ_CTRL 0x34
40#define SPI_ADRS_DMA_READ_LEN 0x36
41#define SPI_ADRS_DMA_READ_BASE 0x38
42
43#define SPI_CTRL_STAT_HOST_OVERRIDE 0x8000
44#define SPI_CTRL_STAT_START_HALTED 0x4000
45#define SPI_CTRL_STAT_RAM_BOOT 0x2000
46#define SPI_CTRL_STAT_HOST_RESET 0x1000
47#define SPI_CTRL_STAT_HOST_CPU_EN 0x0800
48
49#define SPI_DMA_WRITE_CTRL_ENABLE 0x0001
50#define SPI_DMA_READ_CTRL_ENABLE 0x0001
51#define HOST_ALLOWED (1 << 7)
52
53#define SPI_TIMEOUT 100 /* msec */
54
55#define SPI_MAX_TX_PACKETS 32
56
57#define SPI_MAX_PACKET_SIZE 32767
58
59#define SPI_TARGET_INT_WAKEUP 0x00000001
60#define SPI_TARGET_INT_SLEEP 0x00000002
61#define SPI_TARGET_INT_RDDONE 0x00000004
62
63#define SPI_TARGET_INT_CTS 0x00004000
64#define SPI_TARGET_INT_DR 0x00008000
65
66#define SPI_HOST_INT_READY 0x00000001
67#define SPI_HOST_INT_WR_READY 0x00000002
68#define SPI_HOST_INT_SW_UPDATE 0x00000004
69#define SPI_HOST_INT_UPDATE 0x10000000
70
71/* clear to send */
72#define SPI_HOST_INT_CR 0x00004000
73
74/* data ready */
75#define SPI_HOST_INT_DR 0x00008000
76
77#define SPI_HOST_INTS_DEFAULT \
78 (SPI_HOST_INT_READY | SPI_HOST_INT_UPDATE | SPI_HOST_INT_SW_UPDATE)
79
80#define TARGET_BOOT_SLEEP 50
81
82struct p54s_dma_regs {
83 __le16 cmd;
84 __le16 len;
85 __le32 addr;
86} __packed;
87
88struct p54s_tx_info {
89 struct list_head tx_list;
90};
91
92struct p54s_priv {
93 /* p54_common has to be the first entry */
94 struct p54_common common;
95 struct ieee80211_hw *hw;
96 struct spi_device *spi;
97
98 struct work_struct work;
99
100 struct mutex mutex;
101 struct completion fw_comp;
102
103 spinlock_t tx_lock;
104
105 /* protected by tx_lock */
106 struct list_head tx_pending;
107
108 enum fw_state fw_state;
109 const struct firmware *firmware;
110};
111
112#endif /* P54SPI_H */
113

source code of linux/drivers/net/wireless/intersil/p54/p54spi.h