1 /*
2 *
3 * BRIEF MODULE DESCRIPTION
4 * Au1000 IrDA driver.
5 *
6 * Copyright 2001 MontaVista Software Inc.
7 * Author: MontaVista Software, Inc.
8 * ppopov@mvista.com or source@mvista.com
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 *
15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
16 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
17 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
18 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
21 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
22 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * You should have received a copy of the GNU General Public License along
27 * with this program; if not, write to the Free Software Foundation, Inc.,
28 * 675 Mass Ave, Cambridge, MA 02139, USA.
29 */
30
31 #ifndef AU1000_IRCC_H
32 #define AU1000_IRCC_H
33
34 #include <linux/time.h>
35
36 #include <linux/spinlock.h>
37 #include <linux/pm.h>
38 #include <asm/io.h>
39
40 #define NUM_IR_IFF 1
41 #define NUM_IR_DESC 64
42 #define RING_SIZE_4 0x0
43 #define RING_SIZE_16 0x3
44 #define RING_SIZE_64 0xF
45 #define MAX_NUM_IR_DESC 64
46 #define MAX_BUF_SIZE 2048
47
48 #define BPS_115200 0
49 #define BPS_57600 1
50 #define BPS_38400 2
51 #define BPS_19200 5
52 #define BPS_9600 11
53 #define BPS_2400 47
54
55 /* Ring descriptor flags */
56 #define AU_OWN (1<<7) /* tx,rx */
57
58 #define IR_DIS_CRC (1<<6) /* tx */
59 #define IR_BAD_CRC (1<<5) /* tx */
60 #define IR_NEED_PULSE (1<<4) /* tx */
61 #define IR_FORCE_UNDER (1<<3) /* tx */
62 #define IR_DISABLE_TX (1<<2) /* tx */
63 #define IR_HW_UNDER (1<<0) /* tx */
64 #define IR_TX_ERROR (IR_DIS_CRC|IR_BAD_CRC|IR_HW_UNDER)
65
66 #define IR_PHY_ERROR (1<<6) /* rx */
67 #define IR_CRC_ERROR (1<<5) /* rx */
68 #define IR_MAX_LEN (1<<4) /* rx */
69 #define IR_FIFO_OVER (1<<3) /* rx */
70 #define IR_SIR_ERROR (1<<2) /* rx */
71 #define IR_RX_ERROR (IR_PHY_ERROR|IR_CRC_ERROR| \
72 IR_MAX_LEN|IR_FIFO_OVER|IR_SIR_ERROR)
73
74 typedef struct db_dest {
75 struct db_dest *pnext;
76 volatile u32 *vaddr;
77 dma_addr_t dma_addr;
78 } db_dest_t;
79
80
81 typedef struct ring_desc {
82 u8 count_0; /* 7:0 */
83 u8 count_1; /* 12:8 */
84 u8 reserved;
85 u8 flags;
86 u8 addr_0; /* 7:0 */
87 u8 addr_1; /* 15:8 */
88 u8 addr_2; /* 23:16 */
89 u8 addr_3; /* 31:24 */
90 } ring_dest_t;
91
92
93 /* Private data for each instance */
94 struct au1k_private {
95
96 db_dest_t *pDBfree;
97 db_dest_t db[2*NUM_IR_DESC];
98 volatile ring_dest_t *rx_ring[NUM_IR_DESC];
99 volatile ring_dest_t *tx_ring[NUM_IR_DESC];
100 db_dest_t *rx_db_inuse[NUM_IR_DESC];
101 db_dest_t *tx_db_inuse[NUM_IR_DESC];
102 u32 rx_head;
103 u32 tx_head;
104 u32 tx_tail;
105 u32 tx_full;
106
107 iobuff_t rx_buff;
108
109 struct net_device *netdev;
110 struct net_device_stats stats;
111
112 struct timeval stamp;
113 struct timeval now;
114 struct qos_info qos;
115 struct irlap_cb *irlap;
116
117 u8 open;
118 u32 speed;
119 u32 newspeed;
120
121 u32 intr_work_done; /* number of Rx and Tx pkts processed in the isr */
122 struct timer_list timer;
123
124 spinlock_t lock; /* For serializing operations */
125 struct pm_dev *dev;
126 };
127 #endif /* AU1000_IRCC_H */
128
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