1 /*****************************************************************************
2 *
3 * Filename: mcs7780.h
4 * Version: 0.2-alpha
5 * Description: Irda MosChip USB Dongle
6 * Status: Experimental
7 * Authors: Lukasz Stelmach <stlman@poczta.fm>
8 * Brian Pugh <bpugh@cs.pdx.edu>
9 *
10 * Copyright (C) 2005, Lukasz Stelmach <stlman@poczta.fm>
11 * Copyright (C) 2005, Brian Pugh <bpugh@cs.pdx.edu>
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 *
27 *****************************************************************************/
28 #ifndef _MCS7780_H
29 #define _MCS7780_H
30
31 #define MCS_MODE_SIR 0
32 #define MCS_MODE_MIR 1
33 #define MCS_MODE_FIR 2
34
35 #define MCS_CTRL_TIMEOUT 500
36 #define MCS_XMIT_TIMEOUT 500
37 /* Possible transceiver types */
38 #define MCS_TSC_VISHAY 0 /* Vishay TFD, default choice */
39 #define MCS_TSC_AGILENT 1 /* Agilent 3602/3600 */
40 #define MCS_TSC_SHARP 2 /* Sharp GP2W1000YP */
41
42 /* Requests */
43 #define MCS_RD_RTYPE 0xC0
44 #define MCS_WR_RTYPE 0x40
45 #define MCS_RDREQ 0x0F
46 #define MCS_WRREQ 0x0E
47
48 /* Register 0x00 */
49 #define MCS_MODE_REG 0
50 #define MCS_FIR ((__u16)0x0001)
51 #define MCS_SIR16US ((__u16)0x0002)
52 #define MCS_BBTG ((__u16)0x0004)
53 #define MCS_ASK ((__u16)0x0008)
54 #define MCS_PARITY ((__u16)0x0010)
55
56 /* SIR/MIR speed constants */
57 #define MCS_SPEED_SHIFT 5
58 #define MCS_SPEED_MASK ((__u16)0x00E0)
59 #define MCS_SPEED(x) ((x & MCS_SPEED_MASK) >> MCS_SPEED_SHIFT)
60 #define MCS_SPEED_2400 ((0 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK)
61 #define MCS_SPEED_9600 ((1 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK)
62 #define MCS_SPEED_19200 ((2 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK)
63 #define MCS_SPEED_38400 ((3 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK)
64 #define MCS_SPEED_57600 ((4 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK)
65 #define MCS_SPEED_115200 ((5 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK)
66 #define MCS_SPEED_576000 ((6 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK)
67 #define MCS_SPEED_1152000 ((7 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK)
68
69 #define MCS_PLLPWDN ((__u16)0x0100)
70 #define MCS_DRIVER ((__u16)0x0200)
71 #define MCS_DTD ((__u16)0x0400)
72 #define MCS_DIR ((__u16)0x0800)
73 #define MCS_SIPEN ((__u16)0x1000)
74 #define MCS_SENDSIP ((__u16)0x2000)
75 #define MCS_CHGDIR ((__u16)0x4000)
76 #define MCS_RESET ((__u16)0x8000)
77
78 /* Register 0x02 */
79 #define MCS_XCVR_REG 2
80 #define MCS_MODE0 ((__u16)0x0001)
81 #define MCS_STFIR ((__u16)0x0002)
82 #define MCS_XCVR_CONF ((__u16)0x0004)
83 #define MCS_RXFAST ((__u16)0x0008)
84 /* TXCUR [6:4] */
85 #define MCS_TXCUR_SHIFT 4
86 #define MCS_TXCUR_MASK ((__u16)0x0070)
87 #define MCS_TXCUR(x) ((x & MCS_TXCUR_MASK) >> MCS_TXCUR_SHIFT)
88 #define MCS_SETTXCUR(x,y) \
89 ((x & ~MCS_TXCUR_MASK) | (y << MCS_TXCUR_SHIFT) & MCS_TXCUR_MASK)
90
91 #define MCS_MODE1 ((__u16)0x0080)
92 #define MCS_SMODE0 ((__u16)0x0100)
93 #define MCS_SMODE1 ((__u16)0x0200)
94 #define MCS_INVTX ((__u16)0x0400)
95 #define MCS_INVRX ((__u16)0x0800)
96
97 #define MCS_MINRXPW_REG 4
98
99 #define MCS_RESV_REG 7
100 #define MCS_IRINTX ((__u16)0x0001)
101 #define MCS_IRINRX ((__u16)0x0002)
102
103 struct mcs_cb {
104 struct usb_device *usbdev; /* init: probe_irda */
105 struct net_device *netdev; /* network layer */
106 struct irlap_cb *irlap; /* The link layer we are binded to */
107 struct net_device_stats stats; /* network statistics */
108 struct qos_info qos;
109 unsigned int speed; /* Current speed */
110 unsigned int new_speed; /* new speed */
111
112 struct work_struct work; /* Change speed work */
113
114 struct sk_buff *tx_pending;
115 char in_buf[4096]; /* transmit/receive buffer */
116 char out_buf[4096]; /* transmit/receive buffer */
117 __u8 *fifo_status;
118
119 iobuff_t rx_buff; /* receive unwrap state machine */
120 struct timeval rx_time;
121 spinlock_t lock;
122 int receiving;
123
124 __u8 ep_in;
125 __u8 ep_out;
126
127 struct urb *rx_urb;
128 struct urb *tx_urb;
129
130 int transceiver_type;
131 int sir_tweak;
132 int receive_mode;
133 };
134
135 static int mcs_set_reg(struct mcs_cb *mcs, __u16 reg, __u16 val);
136 static int mcs_get_reg(struct mcs_cb *mcs, __u16 reg, __u16 * val);
137
138 static inline int mcs_setup_transceiver_vishay(struct mcs_cb *mcs);
139 static inline int mcs_setup_transceiver_agilent(struct mcs_cb *mcs);
140 static inline int mcs_setup_transceiver_sharp(struct mcs_cb *mcs);
141 static inline int mcs_setup_transceiver(struct mcs_cb *mcs);
142 static inline int mcs_wrap_sir_skb(struct sk_buff *skb, __u8 * buf);
143 static unsigned mcs_wrap_fir_skb(const struct sk_buff *skb, __u8 *buf);
144 static unsigned mcs_wrap_mir_skb(const struct sk_buff *skb, __u8 *buf);
145 static void mcs_unwrap_mir(struct mcs_cb *mcs, __u8 *buf, int len);
146 static void mcs_unwrap_fir(struct mcs_cb *mcs, __u8 *buf, int len);
147 static inline int mcs_setup_urbs(struct mcs_cb *mcs);
148 static inline int mcs_receive_start(struct mcs_cb *mcs);
149 static inline int mcs_find_endpoints(struct mcs_cb *mcs,
150 struct usb_host_endpoint *ep, int epnum);
151
152 static int mcs_speed_change(struct mcs_cb *mcs);
153
154 static int mcs_net_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd);
155 static int mcs_net_close(struct net_device *netdev);
156 static int mcs_net_open(struct net_device *netdev);
157 static struct net_device_stats *mcs_net_get_stats(struct net_device *netdev);
158
159 static void mcs_receive_irq(struct urb *urb);
160 static void mcs_send_irq(struct urb *urb);
161 static int mcs_hard_xmit(struct sk_buff *skb, struct net_device *netdev);
162
163 static int mcs_probe(struct usb_interface *intf,
164 const struct usb_device_id *id);
165 static void mcs_disconnect(struct usb_interface *intf);
166
167 #endif /* _MCS7780_H */
168
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