1 | #include <machine/rtems-bsd-kernel-space.h> |
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2 | |
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3 | #include <sys/cdefs.h> |
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4 | __FBSDID("$FreeBSD$"); |
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5 | |
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6 | /*- |
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7 | * Copyright (c) 2003 Scott Long |
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8 | * All rights reserved. |
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9 | * |
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10 | * Redistribution and use in source and binary forms, with or without |
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11 | * modification, are permitted provided that the following conditions |
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12 | * are met: |
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13 | * 1. Redistributions of source code must retain the above copyright |
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14 | * notice, this list of conditions and the following disclaimer. |
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15 | * 2. Redistributions in binary form must reproduce the above copyright |
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16 | * notice, this list of conditions and the following disclaimer in the |
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17 | * documentation and/or other materials provided with the distribution. |
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18 | * |
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19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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29 | * SUCH DAMAGE. |
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30 | * |
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31 | */ |
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32 | |
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33 | /* |
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34 | * Driver for the MCT (Magic Control Technology) USB-RS232 Converter. |
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35 | * Based on the superb documentation from the linux mct_u232 driver by |
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36 | * Wolfgang Grandeggar <wolfgang@cec.ch>. |
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37 | * This device smells a lot like the Belkin F5U103, except that it has |
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38 | * suffered some mild brain-damage. This driver is based off of the ubsa.c |
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39 | * driver from Alexander Kabaev <kan@FreeBSD.org>. Merging the two together |
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40 | * might be useful, though the subtle differences might lead to lots of |
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41 | * #ifdef's. |
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42 | */ |
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43 | |
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44 | /* |
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45 | * NOTE: all function names beginning like "umct_cfg_" can only |
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46 | * be called from within the config thread function ! |
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47 | */ |
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48 | |
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49 | #include <sys/stdint.h> |
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50 | #include <sys/stddef.h> |
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51 | #include <rtems/bsd/sys/param.h> |
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52 | #include <sys/queue.h> |
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53 | #include <sys/types.h> |
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54 | #include <sys/systm.h> |
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55 | #include <sys/kernel.h> |
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56 | #include <sys/bus.h> |
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57 | #include <sys/module.h> |
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58 | #include <rtems/bsd/sys/lock.h> |
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59 | #include <sys/mutex.h> |
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60 | #include <sys/condvar.h> |
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61 | #include <sys/sysctl.h> |
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62 | #include <sys/sx.h> |
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63 | #include <rtems/bsd/sys/unistd.h> |
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64 | #include <sys/callout.h> |
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65 | #include <sys/malloc.h> |
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66 | #include <sys/priv.h> |
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67 | |
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68 | #include <dev/usb/usb.h> |
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69 | #include <dev/usb/usbdi.h> |
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70 | #include <dev/usb/usbdi_util.h> |
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71 | #include <rtems/bsd/local/usbdevs.h> |
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72 | |
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73 | #define USB_DEBUG_VAR usb_debug |
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74 | #include <dev/usb/usb_debug.h> |
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75 | #include <dev/usb/usb_process.h> |
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76 | |
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77 | #include <dev/usb/serial/usb_serial.h> |
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78 | |
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79 | /* The UMCT advertises the standard 8250 UART registers */ |
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80 | #define UMCT_GET_MSR 2 /* Get Modem Status Register */ |
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81 | #define UMCT_GET_MSR_SIZE 1 |
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82 | #define UMCT_GET_LCR 6 /* Get Line Control Register */ |
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83 | #define UMCT_GET_LCR_SIZE 1 |
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84 | #define UMCT_SET_BAUD 5 /* Set the Baud Rate Divisor */ |
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85 | #define UMCT_SET_BAUD_SIZE 4 |
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86 | #define UMCT_SET_LCR 7 /* Set Line Control Register */ |
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87 | #define UMCT_SET_LCR_SIZE 1 |
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88 | #define UMCT_SET_MCR 10 /* Set Modem Control Register */ |
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89 | #define UMCT_SET_MCR_SIZE 1 |
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90 | |
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91 | #define UMCT_MSR_CTS_CHG 0x01 |
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92 | #define UMCT_MSR_DSR_CHG 0x02 |
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93 | #define UMCT_MSR_RI_CHG 0x04 |
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94 | #define UMCT_MSR_CD_CHG 0x08 |
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95 | #define UMCT_MSR_CTS 0x10 |
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96 | #define UMCT_MSR_RTS 0x20 |
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97 | #define UMCT_MSR_RI 0x40 |
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98 | #define UMCT_MSR_CD 0x80 |
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99 | |
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100 | #define UMCT_INTR_INTERVAL 100 |
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101 | #define UMCT_IFACE_INDEX 0 |
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102 | #define UMCT_CONFIG_INDEX 0 |
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103 | |
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104 | enum { |
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105 | UMCT_BULK_DT_WR, |
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106 | UMCT_BULK_DT_RD, |
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107 | UMCT_INTR_DT_RD, |
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108 | UMCT_N_TRANSFER, |
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109 | }; |
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110 | |
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111 | struct umct_softc { |
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112 | struct ucom_super_softc sc_super_ucom; |
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113 | struct ucom_softc sc_ucom; |
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114 | |
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115 | struct usb_device *sc_udev; |
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116 | struct usb_xfer *sc_xfer[UMCT_N_TRANSFER]; |
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117 | struct mtx sc_mtx; |
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118 | |
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119 | uint32_t sc_unit; |
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120 | |
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121 | uint16_t sc_obufsize; |
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122 | |
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123 | uint8_t sc_lsr; |
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124 | uint8_t sc_msr; |
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125 | uint8_t sc_lcr; |
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126 | uint8_t sc_mcr; |
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127 | uint8_t sc_iface_no; |
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128 | uint8_t sc_swap_cb; |
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129 | }; |
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130 | |
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131 | /* prototypes */ |
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132 | |
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133 | static device_probe_t umct_probe; |
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134 | static device_attach_t umct_attach; |
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135 | static device_detach_t umct_detach; |
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136 | static void umct_free_softc(struct umct_softc *); |
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137 | |
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138 | static usb_callback_t umct_intr_callback; |
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139 | static usb_callback_t umct_intr_callback_sub; |
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140 | static usb_callback_t umct_read_callback; |
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141 | static usb_callback_t umct_read_callback_sub; |
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142 | static usb_callback_t umct_write_callback; |
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143 | |
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144 | static void umct_cfg_do_request(struct umct_softc *sc, uint8_t request, |
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145 | uint16_t len, uint32_t value); |
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146 | static void umct_free(struct ucom_softc *); |
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147 | static void umct_cfg_get_status(struct ucom_softc *, uint8_t *, |
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148 | uint8_t *); |
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149 | static void umct_cfg_set_break(struct ucom_softc *, uint8_t); |
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150 | static void umct_cfg_set_dtr(struct ucom_softc *, uint8_t); |
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151 | static void umct_cfg_set_rts(struct ucom_softc *, uint8_t); |
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152 | static uint8_t umct_calc_baud(uint32_t); |
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153 | static int umct_pre_param(struct ucom_softc *, struct termios *); |
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154 | static void umct_cfg_param(struct ucom_softc *, struct termios *); |
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155 | static void umct_start_read(struct ucom_softc *); |
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156 | static void umct_stop_read(struct ucom_softc *); |
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157 | static void umct_start_write(struct ucom_softc *); |
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158 | static void umct_stop_write(struct ucom_softc *); |
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159 | static void umct_poll(struct ucom_softc *ucom); |
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160 | |
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161 | static const struct usb_config umct_config[UMCT_N_TRANSFER] = { |
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162 | |
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163 | [UMCT_BULK_DT_WR] = { |
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164 | .type = UE_BULK, |
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165 | .endpoint = UE_ADDR_ANY, |
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166 | .direction = UE_DIR_OUT, |
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167 | .bufsize = 0, /* use wMaxPacketSize */ |
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168 | .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, |
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169 | .callback = &umct_write_callback, |
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170 | }, |
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171 | |
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172 | [UMCT_BULK_DT_RD] = { |
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173 | .type = UE_INTERRUPT, |
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174 | .endpoint = UE_ADDR_ANY, |
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175 | .direction = UE_DIR_IN, |
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176 | .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, |
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177 | .bufsize = 0, /* use wMaxPacketSize */ |
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178 | .callback = &umct_read_callback, |
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179 | .ep_index = 0, /* first interrupt endpoint */ |
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180 | }, |
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181 | |
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182 | [UMCT_INTR_DT_RD] = { |
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183 | .type = UE_INTERRUPT, |
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184 | .endpoint = UE_ADDR_ANY, |
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185 | .direction = UE_DIR_IN, |
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186 | .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, |
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187 | .bufsize = 0, /* use wMaxPacketSize */ |
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188 | .callback = &umct_intr_callback, |
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189 | .ep_index = 1, /* second interrupt endpoint */ |
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190 | }, |
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191 | }; |
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192 | |
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193 | static const struct ucom_callback umct_callback = { |
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194 | .ucom_cfg_get_status = &umct_cfg_get_status, |
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195 | .ucom_cfg_set_dtr = &umct_cfg_set_dtr, |
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196 | .ucom_cfg_set_rts = &umct_cfg_set_rts, |
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197 | .ucom_cfg_set_break = &umct_cfg_set_break, |
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198 | .ucom_cfg_param = &umct_cfg_param, |
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199 | .ucom_pre_param = &umct_pre_param, |
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200 | .ucom_start_read = &umct_start_read, |
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201 | .ucom_stop_read = &umct_stop_read, |
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202 | .ucom_start_write = &umct_start_write, |
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203 | .ucom_stop_write = &umct_stop_write, |
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204 | .ucom_poll = &umct_poll, |
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205 | .ucom_free = &umct_free, |
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206 | }; |
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207 | |
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208 | static const STRUCT_USB_HOST_ID umct_devs[] = { |
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209 | {USB_VPI(USB_VENDOR_MCT, USB_PRODUCT_MCT_USB232, 0)}, |
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210 | {USB_VPI(USB_VENDOR_MCT, USB_PRODUCT_MCT_SITECOM_USB232, 0)}, |
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211 | {USB_VPI(USB_VENDOR_MCT, USB_PRODUCT_MCT_DU_H3SP_USB232, 0)}, |
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212 | {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U109, 0)}, |
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213 | {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U409, 0)}, |
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214 | }; |
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215 | |
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216 | static device_method_t umct_methods[] = { |
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217 | DEVMETHOD(device_probe, umct_probe), |
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218 | DEVMETHOD(device_attach, umct_attach), |
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219 | DEVMETHOD(device_detach, umct_detach), |
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220 | DEVMETHOD_END |
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221 | }; |
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222 | |
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223 | static devclass_t umct_devclass; |
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224 | |
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225 | static driver_t umct_driver = { |
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226 | .name = "umct", |
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227 | .methods = umct_methods, |
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228 | .size = sizeof(struct umct_softc), |
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229 | }; |
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230 | |
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231 | DRIVER_MODULE(umct, uhub, umct_driver, umct_devclass, NULL, 0); |
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232 | MODULE_DEPEND(umct, ucom, 1, 1, 1); |
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233 | MODULE_DEPEND(umct, usb, 1, 1, 1); |
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234 | MODULE_VERSION(umct, 1); |
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235 | USB_PNP_HOST_INFO(umct_devs); |
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236 | |
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237 | static int |
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238 | umct_probe(device_t dev) |
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239 | { |
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240 | struct usb_attach_arg *uaa = device_get_ivars(dev); |
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241 | |
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242 | if (uaa->usb_mode != USB_MODE_HOST) { |
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243 | return (ENXIO); |
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244 | } |
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245 | if (uaa->info.bConfigIndex != UMCT_CONFIG_INDEX) { |
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246 | return (ENXIO); |
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247 | } |
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248 | if (uaa->info.bIfaceIndex != UMCT_IFACE_INDEX) { |
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249 | return (ENXIO); |
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250 | } |
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251 | return (usbd_lookup_id_by_uaa(umct_devs, sizeof(umct_devs), uaa)); |
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252 | } |
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253 | |
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254 | static int |
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255 | umct_attach(device_t dev) |
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256 | { |
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257 | struct usb_attach_arg *uaa = device_get_ivars(dev); |
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258 | struct umct_softc *sc = device_get_softc(dev); |
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259 | int32_t error; |
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260 | uint16_t maxp; |
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261 | uint8_t iface_index; |
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262 | |
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263 | sc->sc_udev = uaa->device; |
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264 | sc->sc_unit = device_get_unit(dev); |
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265 | |
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266 | device_set_usb_desc(dev); |
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267 | mtx_init(&sc->sc_mtx, "umct", NULL, MTX_DEF); |
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268 | ucom_ref(&sc->sc_super_ucom); |
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269 | |
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270 | sc->sc_iface_no = uaa->info.bIfaceNum; |
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271 | |
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272 | iface_index = UMCT_IFACE_INDEX; |
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273 | error = usbd_transfer_setup(uaa->device, &iface_index, |
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274 | sc->sc_xfer, umct_config, UMCT_N_TRANSFER, sc, &sc->sc_mtx); |
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275 | |
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276 | if (error) { |
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277 | device_printf(dev, "allocating USB " |
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278 | "transfers failed\n"); |
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279 | goto detach; |
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280 | } |
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281 | |
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282 | /* |
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283 | * The real bulk-in endpoint is also marked as an interrupt. |
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284 | * The only way to differentiate it from the real interrupt |
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285 | * endpoint is to look at the wMaxPacketSize field. |
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286 | */ |
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287 | maxp = usbd_xfer_max_framelen(sc->sc_xfer[UMCT_BULK_DT_RD]); |
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288 | if (maxp == 0x2) { |
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289 | |
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290 | /* guessed wrong - switch around endpoints */ |
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291 | |
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292 | struct usb_xfer *temp = sc->sc_xfer[UMCT_INTR_DT_RD]; |
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293 | |
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294 | sc->sc_xfer[UMCT_INTR_DT_RD] = sc->sc_xfer[UMCT_BULK_DT_RD]; |
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295 | sc->sc_xfer[UMCT_BULK_DT_RD] = temp; |
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296 | sc->sc_swap_cb = 1; |
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297 | } |
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298 | |
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299 | sc->sc_obufsize = usbd_xfer_max_len(sc->sc_xfer[UMCT_BULK_DT_WR]); |
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300 | |
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301 | if (uaa->info.idProduct == USB_PRODUCT_MCT_SITECOM_USB232) { |
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302 | if (sc->sc_obufsize > 16) { |
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303 | sc->sc_obufsize = 16; |
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304 | } |
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305 | } |
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306 | error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, |
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307 | &umct_callback, &sc->sc_mtx); |
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308 | if (error) { |
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309 | goto detach; |
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310 | } |
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311 | ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev); |
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312 | |
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313 | return (0); /* success */ |
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314 | |
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315 | detach: |
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316 | umct_detach(dev); |
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317 | return (ENXIO); /* failure */ |
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318 | } |
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319 | |
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320 | static int |
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321 | umct_detach(device_t dev) |
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322 | { |
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323 | struct umct_softc *sc = device_get_softc(dev); |
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324 | |
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325 | ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom); |
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326 | usbd_transfer_unsetup(sc->sc_xfer, UMCT_N_TRANSFER); |
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327 | |
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328 | device_claim_softc(dev); |
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329 | |
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330 | umct_free_softc(sc); |
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331 | |
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332 | return (0); |
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333 | } |
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334 | |
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335 | UCOM_UNLOAD_DRAIN(umct); |
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336 | |
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337 | static void |
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338 | umct_free_softc(struct umct_softc *sc) |
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339 | { |
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340 | if (ucom_unref(&sc->sc_super_ucom)) { |
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341 | mtx_destroy(&sc->sc_mtx); |
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342 | device_free_softc(sc); |
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343 | } |
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344 | } |
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345 | |
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346 | static void |
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347 | umct_free(struct ucom_softc *ucom) |
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348 | { |
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349 | umct_free_softc(ucom->sc_parent); |
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350 | } |
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351 | |
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352 | static void |
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353 | umct_cfg_do_request(struct umct_softc *sc, uint8_t request, |
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354 | uint16_t len, uint32_t value) |
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355 | { |
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356 | struct usb_device_request req; |
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357 | usb_error_t err; |
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358 | uint8_t temp[4]; |
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359 | |
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360 | if (len > 4) |
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361 | len = 4; |
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362 | req.bmRequestType = UT_WRITE_VENDOR_DEVICE; |
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363 | req.bRequest = request; |
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364 | USETW(req.wValue, 0); |
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365 | req.wIndex[0] = sc->sc_iface_no; |
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366 | req.wIndex[1] = 0; |
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367 | USETW(req.wLength, len); |
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368 | USETDW(temp, value); |
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369 | |
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370 | err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, |
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371 | &req, temp, 0, 1000); |
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372 | if (err) { |
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373 | DPRINTFN(0, "device request failed, err=%s " |
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374 | "(ignored)\n", usbd_errstr(err)); |
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375 | } |
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376 | return; |
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377 | } |
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378 | |
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379 | static void |
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380 | umct_intr_callback_sub(struct usb_xfer *xfer, usb_error_t error) |
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381 | { |
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382 | struct umct_softc *sc = usbd_xfer_softc(xfer); |
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383 | struct usb_page_cache *pc; |
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384 | uint8_t buf[2]; |
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385 | int actlen; |
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386 | |
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387 | usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); |
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388 | |
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389 | switch (USB_GET_STATE(xfer)) { |
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390 | case USB_ST_TRANSFERRED: |
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391 | if (actlen < 2) { |
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392 | DPRINTF("too short message\n"); |
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393 | goto tr_setup; |
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394 | } |
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395 | pc = usbd_xfer_get_frame(xfer, 0); |
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396 | usbd_copy_out(pc, 0, buf, sizeof(buf)); |
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397 | |
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398 | /* |
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399 | * MSR bits need translation from ns16550 to SER_* values. |
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400 | * LSR bits are ns16550 in hardware and ucom. |
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401 | */ |
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402 | sc->sc_msr = 0; |
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403 | if (buf[0] & UMCT_MSR_CTS) |
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404 | sc->sc_msr |= SER_CTS; |
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405 | if (buf[0] & UMCT_MSR_CD) |
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406 | sc->sc_msr |= SER_DCD; |
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407 | if (buf[0] & UMCT_MSR_RI) |
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408 | sc->sc_msr |= SER_RI; |
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409 | if (buf[0] & UMCT_MSR_RTS) |
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410 | sc->sc_msr |= SER_DSR; |
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411 | sc->sc_lsr = buf[1]; |
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412 | |
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413 | ucom_status_change(&sc->sc_ucom); |
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414 | /* FALLTHROUGH */ |
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415 | case USB_ST_SETUP: |
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416 | tr_setup: |
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417 | usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); |
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418 | usbd_transfer_submit(xfer); |
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419 | return; |
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420 | |
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421 | default: /* Error */ |
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422 | if (error != USB_ERR_CANCELLED) { |
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423 | /* try to clear stall first */ |
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424 | usbd_xfer_set_stall(xfer); |
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425 | goto tr_setup; |
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426 | } |
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427 | return; |
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428 | } |
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429 | } |
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430 | |
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431 | static void |
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432 | umct_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) |
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433 | { |
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434 | struct umct_softc *sc = ucom->sc_parent; |
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435 | |
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436 | *lsr = sc->sc_lsr; |
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437 | *msr = sc->sc_msr; |
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438 | } |
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439 | |
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440 | static void |
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441 | umct_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) |
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442 | { |
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443 | struct umct_softc *sc = ucom->sc_parent; |
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444 | |
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445 | if (onoff) |
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446 | sc->sc_lcr |= 0x40; |
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447 | else |
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448 | sc->sc_lcr &= ~0x40; |
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449 | |
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450 | umct_cfg_do_request(sc, UMCT_SET_LCR, UMCT_SET_LCR_SIZE, sc->sc_lcr); |
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451 | } |
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452 | |
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453 | static void |
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454 | umct_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) |
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455 | { |
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456 | struct umct_softc *sc = ucom->sc_parent; |
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457 | |
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458 | if (onoff) |
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459 | sc->sc_mcr |= 0x01; |
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460 | else |
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461 | sc->sc_mcr &= ~0x01; |
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462 | |
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463 | umct_cfg_do_request(sc, UMCT_SET_MCR, UMCT_SET_MCR_SIZE, sc->sc_mcr); |
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464 | } |
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465 | |
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466 | static void |
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467 | umct_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) |
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468 | { |
---|
469 | struct umct_softc *sc = ucom->sc_parent; |
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470 | |
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471 | if (onoff) |
---|
472 | sc->sc_mcr |= 0x02; |
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473 | else |
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474 | sc->sc_mcr &= ~0x02; |
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475 | |
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476 | umct_cfg_do_request(sc, UMCT_SET_MCR, UMCT_SET_MCR_SIZE, sc->sc_mcr); |
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477 | } |
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478 | |
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479 | static uint8_t |
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480 | umct_calc_baud(uint32_t baud) |
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481 | { |
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482 | switch (baud) { |
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483 | case B300:return (0x1); |
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484 | case B600: |
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485 | return (0x2); |
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486 | case B1200: |
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487 | return (0x3); |
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488 | case B2400: |
---|
489 | return (0x4); |
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490 | case B4800: |
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491 | return (0x6); |
---|
492 | case B9600: |
---|
493 | return (0x8); |
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494 | case B19200: |
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495 | return (0x9); |
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496 | case B38400: |
---|
497 | return (0xa); |
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498 | case B57600: |
---|
499 | return (0xb); |
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500 | case 115200: |
---|
501 | return (0xc); |
---|
502 | case B0: |
---|
503 | default: |
---|
504 | break; |
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505 | } |
---|
506 | return (0x0); |
---|
507 | } |
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508 | |
---|
509 | static int |
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510 | umct_pre_param(struct ucom_softc *ucom, struct termios *t) |
---|
511 | { |
---|
512 | return (0); /* we accept anything */ |
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513 | } |
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514 | |
---|
515 | static void |
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516 | umct_cfg_param(struct ucom_softc *ucom, struct termios *t) |
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517 | { |
---|
518 | struct umct_softc *sc = ucom->sc_parent; |
---|
519 | uint32_t value; |
---|
520 | |
---|
521 | value = umct_calc_baud(t->c_ospeed); |
---|
522 | umct_cfg_do_request(sc, UMCT_SET_BAUD, UMCT_SET_BAUD_SIZE, value); |
---|
523 | |
---|
524 | value = (sc->sc_lcr & 0x40); |
---|
525 | |
---|
526 | switch (t->c_cflag & CSIZE) { |
---|
527 | case CS5: |
---|
528 | value |= 0x0; |
---|
529 | break; |
---|
530 | case CS6: |
---|
531 | value |= 0x1; |
---|
532 | break; |
---|
533 | case CS7: |
---|
534 | value |= 0x2; |
---|
535 | break; |
---|
536 | default: |
---|
537 | case CS8: |
---|
538 | value |= 0x3; |
---|
539 | break; |
---|
540 | } |
---|
541 | |
---|
542 | value |= (t->c_cflag & CSTOPB) ? 0x4 : 0; |
---|
543 | if (t->c_cflag & PARENB) { |
---|
544 | value |= 0x8; |
---|
545 | value |= (t->c_cflag & PARODD) ? 0x0 : 0x10; |
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546 | } |
---|
547 | /* |
---|
548 | * XXX There doesn't seem to be a way to tell the device |
---|
549 | * to use flow control. |
---|
550 | */ |
---|
551 | |
---|
552 | sc->sc_lcr = value; |
---|
553 | umct_cfg_do_request(sc, UMCT_SET_LCR, UMCT_SET_LCR_SIZE, value); |
---|
554 | } |
---|
555 | |
---|
556 | static void |
---|
557 | umct_start_read(struct ucom_softc *ucom) |
---|
558 | { |
---|
559 | struct umct_softc *sc = ucom->sc_parent; |
---|
560 | |
---|
561 | /* start interrupt endpoint */ |
---|
562 | usbd_transfer_start(sc->sc_xfer[UMCT_INTR_DT_RD]); |
---|
563 | |
---|
564 | /* start read endpoint */ |
---|
565 | usbd_transfer_start(sc->sc_xfer[UMCT_BULK_DT_RD]); |
---|
566 | } |
---|
567 | |
---|
568 | static void |
---|
569 | umct_stop_read(struct ucom_softc *ucom) |
---|
570 | { |
---|
571 | struct umct_softc *sc = ucom->sc_parent; |
---|
572 | |
---|
573 | /* stop interrupt endpoint */ |
---|
574 | usbd_transfer_stop(sc->sc_xfer[UMCT_INTR_DT_RD]); |
---|
575 | |
---|
576 | /* stop read endpoint */ |
---|
577 | usbd_transfer_stop(sc->sc_xfer[UMCT_BULK_DT_RD]); |
---|
578 | } |
---|
579 | |
---|
580 | static void |
---|
581 | umct_start_write(struct ucom_softc *ucom) |
---|
582 | { |
---|
583 | struct umct_softc *sc = ucom->sc_parent; |
---|
584 | |
---|
585 | usbd_transfer_start(sc->sc_xfer[UMCT_BULK_DT_WR]); |
---|
586 | } |
---|
587 | |
---|
588 | static void |
---|
589 | umct_stop_write(struct ucom_softc *ucom) |
---|
590 | { |
---|
591 | struct umct_softc *sc = ucom->sc_parent; |
---|
592 | |
---|
593 | usbd_transfer_stop(sc->sc_xfer[UMCT_BULK_DT_WR]); |
---|
594 | } |
---|
595 | |
---|
596 | static void |
---|
597 | umct_read_callback(struct usb_xfer *xfer, usb_error_t error) |
---|
598 | { |
---|
599 | struct umct_softc *sc = usbd_xfer_softc(xfer); |
---|
600 | |
---|
601 | if (sc->sc_swap_cb) |
---|
602 | umct_intr_callback_sub(xfer, error); |
---|
603 | else |
---|
604 | umct_read_callback_sub(xfer, error); |
---|
605 | } |
---|
606 | |
---|
607 | static void |
---|
608 | umct_intr_callback(struct usb_xfer *xfer, usb_error_t error) |
---|
609 | { |
---|
610 | struct umct_softc *sc = usbd_xfer_softc(xfer); |
---|
611 | |
---|
612 | if (sc->sc_swap_cb) |
---|
613 | umct_read_callback_sub(xfer, error); |
---|
614 | else |
---|
615 | umct_intr_callback_sub(xfer, error); |
---|
616 | } |
---|
617 | |
---|
618 | static void |
---|
619 | umct_write_callback(struct usb_xfer *xfer, usb_error_t error) |
---|
620 | { |
---|
621 | struct umct_softc *sc = usbd_xfer_softc(xfer); |
---|
622 | struct usb_page_cache *pc; |
---|
623 | uint32_t actlen; |
---|
624 | |
---|
625 | switch (USB_GET_STATE(xfer)) { |
---|
626 | case USB_ST_SETUP: |
---|
627 | case USB_ST_TRANSFERRED: |
---|
628 | tr_setup: |
---|
629 | pc = usbd_xfer_get_frame(xfer, 0); |
---|
630 | if (ucom_get_data(&sc->sc_ucom, pc, 0, |
---|
631 | sc->sc_obufsize, &actlen)) { |
---|
632 | |
---|
633 | usbd_xfer_set_frame_len(xfer, 0, actlen); |
---|
634 | usbd_transfer_submit(xfer); |
---|
635 | } |
---|
636 | return; |
---|
637 | |
---|
638 | default: /* Error */ |
---|
639 | if (error != USB_ERR_CANCELLED) { |
---|
640 | /* try to clear stall first */ |
---|
641 | usbd_xfer_set_stall(xfer); |
---|
642 | goto tr_setup; |
---|
643 | } |
---|
644 | return; |
---|
645 | } |
---|
646 | } |
---|
647 | |
---|
648 | static void |
---|
649 | umct_read_callback_sub(struct usb_xfer *xfer, usb_error_t error) |
---|
650 | { |
---|
651 | struct umct_softc *sc = usbd_xfer_softc(xfer); |
---|
652 | struct usb_page_cache *pc; |
---|
653 | int actlen; |
---|
654 | |
---|
655 | usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); |
---|
656 | |
---|
657 | switch (USB_GET_STATE(xfer)) { |
---|
658 | case USB_ST_TRANSFERRED: |
---|
659 | pc = usbd_xfer_get_frame(xfer, 0); |
---|
660 | ucom_put_data(&sc->sc_ucom, pc, 0, actlen); |
---|
661 | |
---|
662 | case USB_ST_SETUP: |
---|
663 | tr_setup: |
---|
664 | usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); |
---|
665 | usbd_transfer_submit(xfer); |
---|
666 | return; |
---|
667 | |
---|
668 | default: /* Error */ |
---|
669 | if (error != USB_ERR_CANCELLED) { |
---|
670 | /* try to clear stall first */ |
---|
671 | usbd_xfer_set_stall(xfer); |
---|
672 | goto tr_setup; |
---|
673 | } |
---|
674 | return; |
---|
675 | } |
---|
676 | } |
---|
677 | |
---|
678 | static void |
---|
679 | umct_poll(struct ucom_softc *ucom) |
---|
680 | { |
---|
681 | struct umct_softc *sc = ucom->sc_parent; |
---|
682 | usbd_transfer_poll(sc->sc_xfer, UMCT_N_TRANSFER); |
---|
683 | } |
---|