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msm_smd.h
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1 /* linux/include/asm-arm/arch-msm/msm_smd.h
2  *
3  * Copyright (C) 2007 Google, Inc.
4  * Author: Brian Swetland <[email protected]>
5  *
6  * This software is licensed under the terms of the GNU General Public
7  * License version 2, as published by the Free Software Foundation, and
8  * may be copied, distributed, and modified under those terms.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  */
16 
17 #ifndef __ASM_ARCH_MSM_SMD_H
18 #define __ASM_ARCH_MSM_SMD_H
19 
20 typedef struct smd_channel smd_channel_t;
21 
22 extern int (*msm_check_for_modem_crash)(void);
23 
24 /* warning: notify() may be called before open returns */
25 int smd_open(const char *name, smd_channel_t **ch, void *priv,
26  void (*notify)(void *priv, unsigned event));
27 
28 #define SMD_EVENT_DATA 1
29 #define SMD_EVENT_OPEN 2
30 #define SMD_EVENT_CLOSE 3
31 
32 int smd_close(smd_channel_t *ch);
33 
34 /* passing a null pointer for data reads and discards */
35 int smd_read(smd_channel_t *ch, void *data, int len);
36 
37 /* Write to stream channels may do a partial write and return
38 ** the length actually written.
39 ** Write to packet channels will never do a partial write --
40 ** it will return the requested length written or an error.
41 */
42 int smd_write(smd_channel_t *ch, const void *data, int len);
43 int smd_write_atomic(smd_channel_t *ch, const void *data, int len);
44 
45 int smd_write_avail(smd_channel_t *ch);
46 int smd_read_avail(smd_channel_t *ch);
47 
48 /* Returns the total size of the current packet being read.
49 ** Returns 0 if no packets available or a stream channel.
50 */
51 int smd_cur_packet_size(smd_channel_t *ch);
52 
53 /* used for tty unthrottling and the like -- causes the notify()
54 ** callback to be called from the same lock context as is used
55 ** when it is called from channel updates
56 */
57 void smd_kick(smd_channel_t *ch);
58 
59 
60 #if 0
61 /* these are interruptable waits which will block you until the specified
62 ** number of bytes are readable or writable.
63 */
64 int smd_wait_until_readable(smd_channel_t *ch, int bytes);
65 int smd_wait_until_writable(smd_channel_t *ch, int bytes);
66 #endif
67 
68 typedef enum {
69  SMD_PORT_DS = 0,
70  SMD_PORT_DIAG,
71  SMD_PORT_RPC_CALL,
72  SMD_PORT_RPC_REPLY,
73  SMD_PORT_BT,
74  SMD_PORT_CONTROL,
75  SMD_PORT_MEMCPY_SPARE1,
76  SMD_PORT_DATA1,
77  SMD_PORT_DATA2,
78  SMD_PORT_DATA3,
79  SMD_PORT_DATA4,
80  SMD_PORT_DATA5,
81  SMD_PORT_DATA6,
82  SMD_PORT_DATA7,
83  SMD_PORT_DATA8,
84  SMD_PORT_DATA9,
85  SMD_PORT_DATA10,
86  SMD_PORT_DATA11,
87  SMD_PORT_DATA12,
88  SMD_PORT_DATA13,
89  SMD_PORT_DATA14,
90  SMD_PORT_DATA15,
91  SMD_PORT_DATA16,
92  SMD_PORT_DATA17,
93  SMD_PORT_DATA18,
94  SMD_PORT_DATA19,
95  SMD_PORT_DATA20,
96  SMD_PORT_GPS_NMEA,
97  SMD_PORT_BRIDGE_1,
98  SMD_PORT_BRIDGE_2,
99  SMD_PORT_BRIDGE_3,
100  SMD_PORT_BRIDGE_4,
101  SMD_PORT_BRIDGE_5,
102  SMD_PORT_LOOPBACK,
103  SMD_PORT_CS_APPS_MODEM,
104  SMD_PORT_CS_APPS_DSP,
105  SMD_PORT_CS_MODEM_DSP,
106  SMD_NUM_PORTS,
107 } smd_port_id_type;
108 
109 #endif
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