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
74typedef struct db_dest {
75	struct db_dest *pnext;
76	volatile u32 *vaddr;
77	dma_addr_t dma_addr;
78} db_dest_t;
79
80
81typedef 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 */
94struct 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