1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
/*********************************************************************
*
* Filename: ali-ircc.h
* Version: 0.5
* Description: Driver for the ALI M1535D and M1543C FIR Controller
* Status: Experimental.
* Author: Benjamin Kong <benjamin_kong@ali.com.tw>
* Created at: 2000/10/16 03:46PM
* Modified at: 2001/1/3 02:56PM
* Modified by: Benjamin Kong <benjamin_kong@ali.com.tw>
*
* Copyright (c) 2000 Benjamin Kong <benjamin_kong@ali.com.tw>
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
********************************************************************/
#ifndef ALI_IRCC_H
#define ALI_IRCC_H
#include <linux/time.h>
#include <linux/spinlock.h>
#include <linux/pm.h>
#include <linux/types.h>
#include <asm/io.h>
/* SIR Register */
/* Usr definition of linux/serial_reg.h */
/* FIR Register */
#define BANK0 0x20
#define BANK1 0x21
#define BANK2 0x22
#define BANK3 0x23
#define FIR_MCR 0x07 /* Master Control Register */
/* Bank 0 */
#define FIR_DR 0x00 /* Alias 0, FIR Data Register (R/W) */
#define FIR_IER 0x01 /* Alias 1, FIR Interrupt Enable Register (R/W) */
#define FIR_IIR 0x02 /* Alias 2, FIR Interrupt Identification Register (Read only) */
#define FIR_LCR_A 0x03 /* Alias 3, FIR Line Control Register A (R/W) */
#define FIR_LCR_B 0x04 /* Alias 4, FIR Line Control Register B (R/W) */
#define FIR_LSR 0x05 /* Alias 5, FIR Line Status Register (R/W) */
#define FIR_BSR 0x06 /* Alias 6, FIR Bus Status Register (Read only) */
/* Alias 1 */
#define IER_FIFO 0x10 /* FIR FIFO Interrupt Enable */
#define IER_TIMER 0x20 /* Timer Interrupt Enable */
#define IER_EOM 0x40 /* End of Message Interrupt Enable */
#define IER_ACT 0x80 /* Active Frame Interrupt Enable */
/* Alias 2 */
#define IIR_FIFO 0x10 /* FIR FIFO Interrupt */
#define IIR_TIMER 0x20 /* Timer Interrupt */
#define IIR_EOM 0x40 /* End of Message Interrupt */
#define IIR_ACT 0x80 /* Active Frame Interrupt */
/* Alias 3 */
#define LCR_A_FIFO_RESET 0x80 /* FIFO Reset */
/* Alias 4 */
#define LCR_B_BW 0x10 /* Brick Wall */
#define LCR_B_SIP 0x20 /* SIP Enable */
#define LCR_B_TX_MODE 0x40 /* Transmit Mode */
#define LCR_B_RX_MODE 0x80 /* Receive Mode */
/* Alias 5 */
#define LSR_FIR_LSA 0x00 /* FIR Line Status Address */
#define LSR_FRAME_ABORT 0x08 /* Frame Abort */
#define LSR_CRC_ERROR 0x10 /* CRC Error */
#define LSR_SIZE_ERROR 0x20 /* Size Error */
#define LSR_FRAME_ERROR 0x40 /* Frame Error */
#define LSR_FIFO_UR 0x80 /* FIFO Underrun */
#define LSR_FIFO_OR 0x80 /* FIFO Overrun */
/* Alias 6 */
#define BSR_FIFO_NOT_EMPTY 0x80 /* FIFO Not Empty */
/* Bank 1 */
#define FIR_CR 0x00 /* Alias 0, FIR Configuration Register (R/W) */
#define FIR_FIFO_TR 0x01 /* Alias 1, FIR FIFO Threshold Register (R/W) */
#define FIR_DMA_TR 0x02 /* Alias 2, FIR DMA Threshold Register (R/W) */
#define FIR_TIMER_IIR 0x03 /* Alias 3, FIR Timer interrupt interval register (W/O) */
#define FIR_FIFO_FR 0x03 /* Alias 3, FIR FIFO Flag register (R/O) */
#define FIR_FIFO_RAR 0x04 /* Alias 4, FIR FIFO Read Address register (R/O) */
#define FIR_FIFO_WAR 0x05 /* Alias 5, FIR FIFO Write Address register (R/O) */
#define FIR_TR 0x06 /* Alias 6, Test REgister (W/O) */
/* Alias 0 */
#define CR_DMA_EN 0x01 /* DMA Enable */
#define CR_DMA_BURST 0x02 /* DMA Burst Mode */
#define CR_TIMER_EN 0x08 /* Timer Enable */
/* Alias 3 */
#define TIMER_IIR_500 0x00 /* 500 us */
#define TIMER_IIR_1ms 0x01 /* 1 ms */
#define TIMER_IIR_2ms 0x02 /* 2 ms */
#define TIMER_IIR_4ms 0x03 /* 4 ms */
/* Bank 2 */
#define FIR_IRDA_CR 0x00 /* Alias 0, IrDA Control Register (R/W) */
#define FIR_BOF_CR 0x01 /* Alias 1, BOF Count Register (R/W) */
#define FIR_BW_CR 0x02 /* Alias 2, Brick Wall Count Register (R/W) */
#define FIR_TX_DSR_HI 0x03 /* Alias 3, TX Data Size Register (high) (R/W) */
#define FIR_TX_DSR_LO 0x04 /* Alias 4, TX Data Size Register (low) (R/W) */
#define FIR_RX_DSR_HI 0x05 /* Alias 5, RX Data Size Register (high) (R/W) */
#define FIR_RX_DSR_LO 0x06 /* Alias 6, RX Data Size Register (low) (R/W) */
/* Alias 0 */
#define IRDA_CR_HDLC1152 0x80 /* 1.152Mbps HDLC Select */
#define IRDA_CR_CRC 0X40 /* CRC Select. */
#define IRDA_CR_HDLC 0x20 /* HDLC select. */
#define IRDA_CR_HP_MODE 0x10 /* HP mode (read only) */
#define IRDA_CR_SD_ST 0x08 /* SD/MODE State. */
#define IRDA_CR_FIR_SIN 0x04 /* FIR SIN Select. */
#define IRDA_CR_ITTX_0 0x02 /* SOUT State. IRTX force to 0 */
#define IRDA_CR_ITTX_1 0x03 /* SOUT State. IRTX force to 1 */
/* Bank 3 */
#define FIR_ID_VR 0x00 /* Alias 0, FIR ID Version Register (R/O) */
#define FIR_MODULE_CR 0x01 /* Alias 1, FIR Module Control Register (R/W) */
#define FIR_IO_BASE_HI 0x02 /* Alias 2, FIR Higher I/O Base Address Register (R/O) */
#define FIR_IO_BASE_LO 0x03 /* Alias 3, FIR Lower I/O Base Address Register (R/O) */
#define FIR_IRQ_CR 0x04 /* Alias 4, FIR IRQ Channel Register (R/O) */
#define FIR_DMA_CR 0x05 /* Alias 5, FIR DMA Channel Register (R/O) */
struct ali_chip {
char *name;
int cfg[2];
unsigned char entr1;
unsigned char entr2;
unsigned char cid_index;
unsigned char cid_value;
int (*probe)(struct ali_chip *chip, chipio_t *info);
int (*init)(struct ali_chip *chip, chipio_t *info);
};
typedef struct ali_chip ali_chip_t;
/* DMA modes needed */
#define DMA_TX_MODE 0x08 /* Mem to I/O, ++, demand. */
#define DMA_RX_MODE 0x04 /* I/O to mem, ++, demand. */
#define MAX_TX_WINDOW 7
#define MAX_RX_WINDOW 7
#define TX_FIFO_Threshold 8
#define RX_FIFO_Threshold 1
#define TX_DMA_Threshold 1
#define RX_DMA_Threshold 1
/* For storing entries in the status FIFO */
struct st_fifo_entry {
int status;
int len;
};
struct st_fifo {
struct st_fifo_entry entries[MAX_RX_WINDOW];
int pending_bytes;
int head;
int tail;
int len;
};
struct frame_cb {
void *start; /* Start of frame in DMA mem */
int len; /* Length of frame in DMA mem */
};
struct tx_fifo {
struct frame_cb queue[MAX_TX_WINDOW]; /* Info about frames in queue */
int ptr; /* Currently being sent */
int len; /* Length of queue */
int free; /* Next free slot */
void *tail; /* Next free start in DMA mem */
};
/* Private data for each instance */
struct ali_ircc_cb {
struct st_fifo st_fifo; /* Info about received frames */
struct tx_fifo tx_fifo; /* Info about frames to be transmitted */
struct net_device *netdev; /* Yes! we are some kind of netdevice */
struct net_device_stats stats;
struct irlap_cb *irlap; /* The link layer we are binded to */
struct qos_info qos; /* QoS capabilities for this device */
chipio_t io; /* IrDA controller information */
iobuff_t tx_buff; /* Transmit buffer */
iobuff_t rx_buff; /* Receive buffer */
dma_addr_t tx_buff_dma;
dma_addr_t rx_buff_dma;
__u8 ier; /* Interrupt enable register */
__u8 InterruptID; /* Interrupt ID */
__u8 BusStatus; /* Bus Status */
__u8 LineStatus; /* Line Status */
unsigned char rcvFramesOverflow;
struct timeval stamp;
struct timeval now;
spinlock_t lock; /* For serializing operations */
__u32 new_speed;
int index; /* Instance index */
unsigned char fifo_opti_buf;
struct pm_dev *dev;
};
static inline void switch_bank(int iobase, int bank)
{
outb(bank, iobase+FIR_MCR);
}
#endif /* ALI_IRCC_H */
|
