arch/arm/mach-msm/include/mach/msm_smd.h

   1 /* linux/include/asm-arm/arch-msm/msm_smd.h
   2  *
   3  * Copyright (C) 2007 Google, Inc.
   4  * Author: Brian Swetland <swetland@google.com>
   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