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Rev | Author | Line No. | Line |
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465 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
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4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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7 | |||
8 | format MS COFF |
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9 | |||
10 | include 'proc32.inc' |
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11 | include 'imports.inc' |
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12 | |||
13 | API_VERSION equ 0 |
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14 | UART_VERSION equ API_VERSION |
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15 | |||
16 | PG_SW equ 0x003 |
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17 | page_tabs equ 0xFDC00000 ;hack |
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18 | |||
19 | OS_BASE equ 0x80000000 |
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20 | SLOT_BASE equ (OS_BASE+0x0080000) |
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21 | TASK_COUNT equ (OS_BASE+0x0003004) |
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22 | CURRENT_TASK equ (OS_BASE+0x0003000) |
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23 | |||
24 | |||
25 | struc APPOBJ ;common object header |
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26 | { |
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27 | .magic dd ? ; |
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28 | .destroy dd ? ;internal destructor |
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29 | .fd dd ? ;next object in list |
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30 | .bk dd ? ;prev object in list |
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31 | .pid dd ? ;owner id |
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32 | }; |
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33 | |||
34 | virtual at 0 |
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35 | APPOBJ APPOBJ |
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36 | end virtual |
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37 | |||
38 | struc IOCTL |
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39 | { .handle dd ? |
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40 | .io_code dd ? |
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41 | .input dd ? |
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42 | .inp_size dd ? |
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43 | .output dd ? |
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44 | .out_size dd ? |
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45 | } |
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46 | |||
47 | virtual at 0 |
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48 | IOCTL IOCTL |
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49 | end virtual |
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50 | |||
51 | DEBUG equ 1 |
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52 | |||
53 | DRV_ENTRY equ 1 |
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54 | DRV_EXIT equ -1 |
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55 | |||
56 | THR_REG equ 0; x3f8 ;transtitter/reciever |
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57 | IER_REG equ 1; x3f9 ;interrupt enable |
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58 | IIR_REG equ 2; x3fA ;interrupt info |
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59 | LCR_REG equ 3; x3FB ;line control |
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60 | MCR_REG equ 4; x3FC ;modem control |
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61 | LSR_REG equ 5; x3FD ;line status |
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62 | MSR_REG equ 6; x3FE ;modem status |
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63 | |||
64 | LCR_5BIT equ 0x00 |
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65 | LCR_6BIT equ 0x01 |
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66 | LCR_7BIT equ 0x02 |
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67 | LCR_8BIT equ 0x03 |
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68 | LCR_STOP_1 equ 0x00 |
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69 | LCR_STOP_2 equ 0x04 |
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70 | LCR_PARITY equ 0x08 |
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71 | LCR_EVEN equ 0x10 |
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72 | LCR_STICK equ 0x20 |
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73 | LCR_BREAK equ 0x40 |
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74 | LCR_DLAB equ 0x80 |
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75 | |||
76 | LSR_DR equ 0x01 ;data ready |
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77 | LSR_OE equ 0x02 ;overrun error |
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78 | LSR_PE equ 0x04 ;parity error |
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79 | LSR_FE equ 0x08 ;framing error |
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80 | LSR_BI equ 0x10 ;break interrupt |
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81 | LSR_THRE equ 0x20 ;transmitter holding empty |
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82 | LSR_TEMT equ 0x40 ;transmitter empty |
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83 | LSR_FER equ 0x80 ;FIFO error |
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84 | |||
85 | FCR_EFIFO equ 0x01 ;enable FIFO |
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86 | FCR_CRB equ 0x02 ;clear reciever FIFO |
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87 | FCR_CXMIT equ 0x04 ;clear transmitter FIFO |
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88 | FCR_RDY equ 0x08 ;set RXRDY and TXRDY pins |
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89 | FCR_FIFO_1 equ 0x00 ;1 byte trigger |
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90 | FCR_FIFO_4 equ 0x40 ;4 bytes trigger |
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91 | FCR_FIFO_8 equ 0x80 ;8 bytes trigger |
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92 | FCR_FIFO_14 equ 0xC0 ;14 bytes trigger |
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93 | |||
94 | IIR_INTR equ 0x01 ;1= no interrupts |
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95 | |||
96 | IER_RDAI equ 0x01 ;reciever data interrupt |
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97 | IER_THRI equ 0x02 ;transmitter empty interrupt |
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98 | IER_LSI equ 0x04 ;line status interrupt |
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99 | IER_MSI equ 0x08 ;modem status interrupt |
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100 | |||
101 | MCR_DTR equ 0x01 ;0-> DTR=1, 1-> DTR=0 |
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102 | MCR_RTS equ 0x02 ;0-> RTS=1, 1-> RTS=0 |
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103 | MCR_OUT_1 equ 0x04 ;0-> OUT1=1, 1-> OUT1=0 |
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104 | MCR_OUT_2 equ 0x08 ;0-> OUT2=1, 1-> OUT2=0; enable intr |
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105 | MCR_LOOP equ 0x10 ;lopback mode |
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106 | |||
107 | MSR_DCTS equ 0x01 ;delta clear to send |
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108 | MSR_DDSR equ 0x02 ;delta data set redy |
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109 | MSR_TERI equ 0x04 ;trailinh edge of ring |
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110 | MSR_DDCD equ 0x08 ;delta carrier detect |
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111 | |||
112 | |||
113 | RATE_50 equ 0 |
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114 | RATE_75 equ 1 |
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115 | RATE_110 equ 2 |
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116 | RATE_134 equ 3 |
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117 | RATE_150 equ 4 |
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118 | RATE_300 equ 5 |
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119 | RATE_600 equ 6 |
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120 | RATE_1200 equ 7 |
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121 | RATE_1800 equ 8 |
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122 | RATE_2000 equ 9 |
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123 | RATE_2400 equ 10 |
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124 | RATE_3600 equ 11 |
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125 | RATE_4800 equ 12 |
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126 | RATE_7200 equ 13 |
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127 | RATE_9600 equ 14 |
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128 | RATE_19200 equ 15 |
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129 | RATE_38400 equ 16 |
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130 | RATE_57600 equ 17 |
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131 | RATE_115200 equ 18 |
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132 | |||
133 | COM_1 equ 1 |
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134 | COM_2 equ 2 |
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135 | COM_3 equ 3 |
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136 | COM_4 equ 4 |
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137 | COM_MAX equ 2 ;only two port supported |
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138 | |||
139 | COM_1_BASE equ 0x3F8 |
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140 | COM_2_BASE equ 0x2F8 |
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141 | |||
142 | COM_1_IRQ equ 4 |
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143 | COM_2_IRQ equ 3 |
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144 | |||
145 | UART_CLOSED equ 0 |
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146 | UART_TRANSMIT equ 1 |
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147 | UART_STOP equ 2 |
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148 | |||
149 | struc UART |
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150 | { |
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151 | .lock dd ? |
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152 | .base dd ? |
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153 | .lcr_reg dd ? |
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154 | .mcr_reg dd ? |
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155 | .rate dd ? |
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156 | .mode dd ? |
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157 | .state dd ? |
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158 | |||
159 | .rcvr_buff dd ? |
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160 | .rcvr_rp dd ? |
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161 | .rcvr_wp dd ? |
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162 | .rcvr_count dd ? |
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163 | .rcvr_top dd ? |
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164 | |||
165 | .xmit_buff dd ? |
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166 | .xmit_rp dd ? |
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167 | .xmit_wp dd ? |
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168 | .xmit_count dd ? |
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169 | .xmit_free dd ? |
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170 | .xmit_top dd ? |
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171 | } |
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172 | virtual at 0 |
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173 | UART UART |
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174 | end virtual |
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175 | |||
176 | UART_SIZE equ 18*4 |
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177 | |||
178 | struc CONNECTION |
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179 | { |
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180 | .magic dd ? ;'CNCT' |
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181 | .destroy dd ? ;internal destructor |
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182 | .fd dd ? ;next object in list |
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183 | .bk dd ? ;prev object in list |
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184 | .pid dd ? ;owner id |
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185 | |||
186 | .id dd ? ;reserved |
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187 | .uart dd ? ;uart pointer |
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188 | } |
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189 | |||
190 | virtual at 0 |
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191 | CONNECTION CONNECTION |
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192 | end virtual |
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193 | |||
194 | CONNECTION_SIZE equ 7*4 |
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195 | |||
196 | public START |
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197 | public service_proc |
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198 | public version |
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199 | |||
200 | section '.flat' code readable align 16 |
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201 | |||
202 | proc START stdcall, state:dword |
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203 | |||
204 | cmp [state], 1 |
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205 | jne .stop |
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206 | |||
207 | mov eax, UART_SIZE |
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208 | call Kmalloc |
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209 | test eax, eax |
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210 | jz .fail |
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211 | |||
212 | mov [com1], eax |
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213 | mov edi, eax |
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214 | mov ecx, UART_SIZE/4 |
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215 | xor eax, eax |
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216 | cld |
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217 | rep stosd |
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218 | |||
219 | mov eax, [com1] |
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220 | mov [eax+UART.base], COM_1_BASE |
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221 | |||
222 | stdcall AllocKernelSpace, 32768 |
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223 | |||
224 | mov edi, [com1] |
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225 | mov edx, eax |
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226 | |||
227 | mov [edi+UART.rcvr_buff], eax |
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228 | add eax, 8192 |
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229 | mov [edi+UART.rcvr_top], eax |
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230 | add eax, 8192 |
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231 | mov [edi+UART.xmit_buff], eax |
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232 | add eax, 8192 |
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233 | mov [edi+UART.xmit_top], eax |
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234 | |||
235 | call AllocPage |
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236 | test eax, eax |
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237 | jz .fail |
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238 | |||
239 | shr edx, 12 |
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240 | or eax, PG_SW |
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241 | mov [page_tabs+edx*4], eax |
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242 | mov [page_tabs+edx*4+8], eax |
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243 | |||
244 | call AllocPage |
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245 | test eax, eax |
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246 | jz .fail |
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247 | |||
248 | or eax, PG_SW |
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249 | mov [page_tabs+edx*4+4], eax |
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250 | mov [page_tabs+edx*4+12], eax |
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251 | |||
252 | call AllocPage |
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253 | test eax, eax |
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254 | jz .fail |
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255 | |||
256 | or eax, PG_SW |
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257 | mov [page_tabs+edx*4+16], eax |
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258 | mov [page_tabs+edx*4+24], eax |
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259 | |||
260 | call AllocPage |
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261 | test eax, eax |
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262 | jz .fail |
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263 | |||
264 | or eax, PG_SW |
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265 | mov [page_tabs+edx*4+20], eax |
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266 | mov [page_tabs+edx*4+28], eax |
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267 | |||
268 | mov eax, [edi+UART.rcvr_buff] |
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269 | invlpg [eax] |
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270 | invlpg [eax+0x1000] |
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271 | invlpg [eax+0x2000] |
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272 | invlpg [eax+0x3000] |
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273 | invlpg [eax+0x4000] |
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274 | invlpg [eax+0x5000] |
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275 | invlpg [eax+0x6000] |
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276 | invlpg [eax+0x7000] |
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277 | |||
278 | mov eax, edi |
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279 | call uart_reset.internal ;eax= uart |
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280 | |||
281 | stdcall AttachIntHandler, COM_1_IRQ, com_1_isr |
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282 | stdcall RegService, sz_uart_srv, service_proc |
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283 | ret |
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284 | .fail: |
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285 | .stop: |
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286 | xor eax, eax |
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287 | ret |
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288 | endp |
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289 | |||
290 | |||
291 | handle equ IOCTL.handle |
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292 | io_code equ IOCTL.io_code |
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293 | input equ IOCTL.input |
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294 | inp_size equ IOCTL.inp_size |
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295 | output equ IOCTL.output |
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296 | out_size equ IOCTL.out_size |
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297 | |||
298 | SRV_GETVERSION equ 0 |
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299 | PORT_OPEN equ 1 |
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300 | PORT_CLOSE equ 2 |
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301 | PORT_RESET equ 3 |
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302 | PORT_SETMODE equ 4 |
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303 | PORT_GETMODE equ 5 |
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304 | PORT_SETMCR equ 6 |
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305 | PORT_GETMCR equ 7 |
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306 | PORT_READ equ 8 |
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307 | PORT_WRITE equ 9 |
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308 | |||
309 | align 4 |
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310 | proc service_proc stdcall, ioctl:dword |
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311 | |||
312 | mov ebx, [ioctl] |
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313 | mov eax, [ebx+io_code] |
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314 | cmp eax, PORT_WRITE |
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315 | ja .fail |
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316 | |||
317 | cmp eax, SRV_GETVERSION |
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318 | jne @F |
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319 | |||
320 | mov eax, [ebx+output] |
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321 | cmp [ebx+out_size], 4 |
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322 | jne .fail |
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323 | mov [eax], dword UART_VERSION |
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324 | xor eax, eax |
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325 | ret |
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326 | @@: |
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327 | cmp eax, PORT_OPEN |
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328 | jne @F |
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329 | |||
330 | cmp [ebx+out_size], 4 |
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331 | jne .fail |
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332 | |||
333 | mov ebx, [ebx+input] |
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334 | mov eax, [ebx] |
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335 | call uart_open |
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336 | mov ebx, [ioctl] |
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337 | mov ebx, [ebx+output] |
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338 | mov [ebx], ecx |
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339 | ret |
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340 | @@: |
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341 | mov esi, [ebx+input] ;input buffer |
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342 | mov edi, [ebx+output] |
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343 | call [uart_func+eax*4] |
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344 | ret |
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345 | .fail: |
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346 | or eax, -1 |
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347 | ret |
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348 | |||
349 | endp |
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350 | |||
351 | restore handle |
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352 | restore io_code |
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353 | restore input |
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354 | restore inp_size |
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355 | restore output |
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356 | restore out_size |
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357 | |||
358 | |||
359 | ; param |
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360 | ; esi= input buffer |
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361 | ; +0 connection |
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362 | ; |
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363 | ; retval |
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364 | ; eax= error code |
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365 | |||
366 | align 4 |
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367 | uart_reset: |
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368 | mov eax, [esi] |
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369 | cmp [eax+APPOBJ.magic], 'CNCT' |
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370 | jne .fail |
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371 | |||
372 | cmp [eax+APPOBJ.destroy], uart_close.destroy |
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373 | jne .fail |
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374 | |||
375 | mov eax, [eax+CONNECTION.uart] |
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376 | test eax, eax |
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377 | jz .fail |
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378 | |||
379 | ; set mode 2400 bod 8-bit |
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380 | ; disable DTR & RTS |
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381 | ; clear FIFO |
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382 | ; clear pending interrupts |
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383 | ; |
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384 | ; param |
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385 | ; eax= uart |
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386 | |||
387 | align 4 |
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388 | .internal: |
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389 | mov esi, eax |
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390 | mov [eax+UART.state], UART_CLOSED |
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391 | mov edx, [eax+UART.base] |
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392 | add edx, MCR_REG |
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393 | xor eax, eax |
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394 | out dx, al ;clear DTR & RTS |
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395 | |||
396 | mov eax, esi |
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397 | mov ebx, RATE_2400 |
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398 | mov ecx, LCR_8BIT+LCR_STOP_1 |
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399 | call uart_set_mode.internal |
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400 | |||
401 | mov edx, [esi+UART.base] |
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402 | add edx, IIR_REG |
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403 | mov eax,FCR_EFIFO+FCR_CRB+FCR_CXMIT+FCR_FIFO_14 |
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404 | out dx, al |
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405 | .clear_RB: |
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406 | mov edx, [esi+UART.base] |
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407 | add edx, LSR_REG |
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408 | in al, dx |
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409 | test eax, LSR_DR |
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410 | jz @F |
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411 | |||
412 | mov edx, [esi+UART.base] |
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413 | in al, dx |
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414 | jmp .clear_RB |
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415 | @@: |
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416 | mov edx, [esi+UART.base] |
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417 | add edx, IER_REG |
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418 | mov eax,IER_RDAI+IER_THRI+IER_LSI |
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419 | out dx, al |
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420 | .clear_IIR: |
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421 | mov edx, [esi+UART.base] |
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422 | add edx, IIR_REG |
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423 | in al, dx |
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424 | test al, IIR_INTR |
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425 | jnz .done |
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426 | |||
427 | shr eax, 1 |
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428 | and eax, 3 |
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429 | jnz @F |
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430 | |||
431 | mov edx, [esi+UART.base] |
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432 | add edx, MSR_REG |
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433 | in al, dx |
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434 | jmp .clear_IIR |
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435 | @@: |
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436 | cmp eax, 1 |
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437 | je .clear_IIR |
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438 | |||
439 | cmp eax, 2 |
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440 | jne @F |
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441 | |||
442 | mov edx, [esi+UART.base] |
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443 | in al, dx |
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444 | jmp .clear_IIR |
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445 | @@: |
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446 | mov edx, [esi+UART.base] |
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447 | add edx, LSR_REG |
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448 | in al, dx |
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449 | jmp .clear_IIR |
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450 | .done: |
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451 | mov edi, [esi+UART.rcvr_buff] |
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452 | mov ecx, 8192/4 |
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453 | xor eax, eax |
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454 | |||
455 | mov [esi+UART.rcvr_rp], edi |
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456 | mov [esi+UART.rcvr_wp], edi |
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457 | mov [esi+UART.rcvr_count], eax |
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458 | |||
459 | cld |
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460 | rep stosd |
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461 | |||
462 | mov edi, [esi+UART.xmit_buff] |
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463 | mov ecx, 8192/4 |
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464 | |||
465 | mov [esi+UART.xmit_rp], edi |
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466 | mov [esi+UART.xmit_wp], edi |
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467 | mov [esi+UART.xmit_count], eax |
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468 | mov [esi+UART.xmit_free], 8192 |
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469 | |||
470 | rep stosd |
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471 | ret ;eax= 0 |
||
472 | .fail: |
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473 | or eax, -1 |
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474 | ret |
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475 | |||
476 | ; param |
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477 | ; esi= input buffer |
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478 | ; +0 connection |
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479 | ; +4 rate |
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480 | ; +8 mode |
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481 | ; |
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482 | ; retval |
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483 | ; eax= error code |
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484 | |||
485 | align 4 |
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486 | uart_set_mode: |
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487 | mov eax, [esi] |
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488 | cmp [eax+APPOBJ.magic], 'CNCT' |
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489 | jne .fail |
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490 | |||
491 | cmp [eax+APPOBJ.destroy], uart_close.destroy |
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492 | jne .fail |
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493 | |||
494 | mov eax, [eax+CONNECTION.uart] |
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495 | test eax, eax |
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496 | jz .fail |
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497 | |||
498 | mov ebx, [esi+4] |
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499 | mov ecx, [esi+8] |
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500 | |||
501 | ; param |
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502 | ; eax= uart |
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503 | ; ebx= baud rate |
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504 | ; ecx= mode |
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505 | |||
506 | align 4 |
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507 | .internal: |
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508 | cmp ebx, RATE_115200 |
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509 | ja .fail |
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510 | |||
511 | cmp ecx, LCR_BREAK |
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512 | jae .fail |
||
513 | |||
514 | mov [eax+UART.rate], ebx |
||
515 | mov [eax+UART.mode], ecx |
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516 | |||
517 | mov esi, eax |
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518 | mov bx, [divisor+ebx*2] |
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519 | |||
520 | mov edx, [esi+UART.base] |
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521 | push edx |
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522 | add edx, LCR_REG |
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523 | in al, dx |
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524 | or al, 0x80 |
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525 | out dx, al |
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526 | |||
527 | pop edx |
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528 | mov al, bl |
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529 | out dx, al |
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530 | |||
531 | inc dx |
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532 | mov al, bh |
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533 | out dx, al |
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534 | |||
535 | add edx, LCR_REG-1 |
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536 | mov eax, ecx |
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537 | out dx, al |
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538 | xor eax, eax |
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539 | ret |
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540 | .fail: |
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541 | or eax, -1 |
||
542 | ret |
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543 | |||
544 | ; param |
||
545 | ; esi= input buffer |
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546 | ; +0 connection |
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547 | ; +4 modem control reg valie |
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548 | ; |
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549 | ; retval |
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550 | ; eax= error code |
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551 | |||
552 | align 4 |
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553 | uart_set_mcr: |
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554 | |||
555 | mov eax, [esi] |
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556 | cmp [eax+APPOBJ.magic], 'CNCT' |
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557 | jne .fail |
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558 | |||
559 | cmp [eax+APPOBJ.destroy], uart_close.destroy |
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560 | jne .fail |
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561 | |||
562 | mov eax, [eax+CONNECTION.uart] |
||
563 | test eax, eax |
||
564 | jz .fail |
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565 | |||
566 | mov ebx, [esi+4] |
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567 | |||
568 | mov [eax+UART.mcr_reg], ebx |
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569 | mov edx, [eax+UART.base] |
||
570 | add edx, MCR_REG |
||
571 | mov al, bl |
||
572 | out dx, al |
||
573 | xor eax, eax |
||
574 | ret |
||
575 | .fail: |
||
576 | or eax, -1 |
||
577 | ret |
||
578 | |||
579 | ; param |
||
580 | ; eax= port |
||
581 | ; |
||
582 | ; retval |
||
583 | ; ecx= connection |
||
584 | ; eax= error code |
||
585 | |||
586 | align 4 |
||
587 | uart_open: |
||
588 | dec eax |
||
589 | cmp eax, COM_MAX |
||
590 | jae .fail |
||
591 | |||
592 | mov esi, [com1+eax*4] ;uart |
||
593 | push esi |
||
594 | .do_wait: |
||
595 | cmp dword [esi+UART.lock],0 |
||
596 | je .get_lock |
||
597 | ; call change_task |
||
598 | jmp .do_wait |
||
599 | .get_lock: |
||
600 | mov eax, 1 |
||
601 | xchg eax, [esi+UART.lock] |
||
602 | test eax, eax |
||
603 | jnz .do_wait |
||
604 | |||
605 | mov eax, esi ;uart |
||
606 | call uart_reset.internal |
||
607 | |||
608 | mov ebx, [CURRENT_TASK] |
||
609 | shl ebx, 5 |
||
610 | mov ebx, [CURRENT_TASK+ebx+4] |
||
611 | mov eax, CONNECTION_SIZE |
||
612 | call CreateObject |
||
613 | pop esi ;uart |
||
614 | test eax, eax |
||
615 | jz .fail |
||
616 | |||
617 | mov [eax+APPOBJ.magic], 'CNCT' |
||
618 | mov [eax+APPOBJ.destroy], uart_close.destroy |
||
619 | mov [eax+CONNECTION.uart], esi |
||
620 | mov ecx, eax |
||
621 | xor eax, eax |
||
622 | ret |
||
623 | .fail: |
||
624 | or eax, -1 |
||
625 | ret |
||
626 | restore .uart |
||
627 | |||
628 | ; param |
||
629 | ; esi= input buffer |
||
630 | |||
631 | align 4 |
||
632 | uart_close: |
||
633 | mov eax, [esi] |
||
634 | cmp [eax+APPOBJ.magic], 'CNCT' |
||
635 | jne .fail |
||
636 | |||
637 | cmp [eax+APPOBJ.destroy], uart_close.destroy |
||
638 | jne .fail |
||
639 | .destroy: |
||
640 | push [eax+CONNECTION.uart] |
||
641 | call DestroyObject ;eax= object |
||
642 | pop eax ;eax= uart |
||
643 | test eax, eax |
||
644 | jz .fail |
||
645 | |||
646 | mov [eax+UART.state], UART_CLOSED |
||
647 | mov [eax+UART.lock], 0 ;release port |
||
648 | xor eax, eax |
||
649 | ret |
||
650 | .fail: |
||
651 | or eax, -1 |
||
652 | ret |
||
653 | |||
654 | |||
655 | ; param |
||
656 | ; eax= uart |
||
657 | ; ebx= baud rate |
||
658 | |||
659 | align 4 |
||
660 | set_rate: |
||
661 | cmp ebx, RATE_115200 |
||
662 | ja .fail |
||
663 | |||
664 | mov [eax+UART.rate], ebx |
||
665 | mov bx, [divisor+ebx*2] |
||
666 | |||
667 | mov edx, [eax+UART.base] |
||
668 | add edx, LCR_REG |
||
669 | in al, dx |
||
670 | push eax |
||
671 | or al, 0x80 |
||
672 | out dx, al |
||
673 | |||
674 | sub edx, LCR_REG |
||
675 | mov al, bl |
||
676 | out dx, al |
||
677 | |||
678 | inc edx |
||
679 | mov al, bh |
||
680 | out dx, al |
||
681 | |||
682 | pop eax |
||
683 | add edx, LCR_REG-1 |
||
684 | out dx, al |
||
685 | .fail: |
||
686 | ret |
||
687 | |||
688 | |||
689 | ; param |
||
690 | ; ebx= uart |
||
691 | |||
692 | align 4 |
||
693 | transmit: |
||
694 | push esi |
||
695 | push edi |
||
696 | |||
697 | mov edx, [ebx+UART.base] |
||
698 | |||
699 | pushfd |
||
700 | cli |
||
701 | |||
702 | mov esi, [ebx+UART.xmit_rp] |
||
703 | mov ecx, [ebx+UART.xmit_count] |
||
704 | test ecx, ecx |
||
705 | je .stop |
||
706 | |||
707 | cmp ecx, 16 |
||
708 | jbe @F |
||
709 | mov ecx, 16 |
||
710 | @@: |
||
711 | sub [ebx+UART.xmit_count], ecx |
||
712 | add [ebx+UART.xmit_free], ecx |
||
713 | cld |
||
714 | @@: |
||
715 | lodsb |
||
716 | out dx, al |
||
717 | dec ecx |
||
718 | jnz @B |
||
719 | |||
720 | cmp esi,[ebx+UART.xmit_top] |
||
721 | jb @F |
||
722 | sub esi, 8192 |
||
723 | @@: |
||
724 | mov [ebx+UART.xmit_rp], esi |
||
725 | |||
726 | cmp [ebx+UART.xmit_count], 0 |
||
727 | je .stop |
||
728 | |||
729 | mov [ebx+UART.state], UART_TRANSMIT |
||
730 | jmp @F |
||
731 | .stop: |
||
732 | mov [ebx+UART.state], UART_STOP |
||
733 | @@: |
||
734 | popfd |
||
735 | pop edi |
||
736 | pop esi |
||
737 | ret |
||
738 | |||
739 | |||
740 | ; param |
||
741 | ; esi= input buffer |
||
742 | ; +0 connection |
||
743 | ; +4 dst buffer |
||
744 | ; +8 dst size |
||
745 | ; edi= output buffer |
||
746 | ; +0 bytes read |
||
747 | |||
748 | ; retval |
||
749 | ; eax= error code |
||
750 | |||
751 | align 4 |
||
752 | uart_read: |
||
753 | mov eax, [esi] |
||
754 | cmp [eax+APPOBJ.magic], 'CNCT' |
||
755 | jne .fail |
||
756 | |||
757 | cmp [eax+APPOBJ.destroy], uart_close.destroy |
||
758 | jne .fail |
||
759 | |||
760 | mov eax, [eax+CONNECTION.uart] |
||
761 | test eax, eax |
||
762 | jz .fail |
||
763 | |||
764 | mov ebx, [esi+8] ;dst size |
||
765 | mov ecx, [eax+UART.rcvr_count] |
||
766 | cmp ecx, ebx |
||
767 | jbe @F |
||
768 | mov ecx, ebx |
||
769 | @@: |
||
770 | mov [edi], ecx ;bytes read |
||
771 | test ecx, ecx |
||
772 | jz .done |
||
773 | |||
774 | push ecx |
||
775 | |||
776 | mov edi, [esi+4] ;dst |
||
777 | mov esi, [eax+UART.rcvr_rp] |
||
778 | cld |
||
779 | rep movsb |
||
780 | pop ecx |
||
781 | |||
782 | cmp esi, [eax+UART.rcvr_top] |
||
783 | jb @F |
||
784 | sub esi, 8192 |
||
785 | @@: |
||
786 | mov [eax+UART.rcvr_rp], esi |
||
787 | sub [eax+UART.rcvr_count], ecx |
||
788 | .done: |
||
789 | xor eax, eax |
||
790 | ret |
||
791 | .fail: |
||
792 | or eax, -1 |
||
793 | ret |
||
794 | |||
795 | ; param |
||
796 | ; esi= input buffer |
||
797 | ; +0 connection |
||
798 | ; +4 src buffer |
||
799 | ; +8 src size |
||
800 | ; |
||
801 | ; retval |
||
802 | ; eax= error code |
||
803 | |||
804 | align 4 |
||
805 | uart_write: |
||
806 | mov eax, [esi] |
||
807 | cmp [eax+APPOBJ.magic], 'CNCT' |
||
808 | jne .fail |
||
809 | |||
810 | cmp [eax+APPOBJ.destroy], uart_close.destroy |
||
811 | jne .fail |
||
812 | |||
813 | mov eax, [eax+CONNECTION.uart] |
||
814 | test eax, eax |
||
815 | jz .fail |
||
816 | |||
817 | mov ebx, [esi+4] |
||
818 | mov edx, [esi+8] |
||
819 | |||
820 | ; param |
||
821 | ; eax= uart |
||
822 | ; ebx= src |
||
823 | ; edx= count |
||
824 | |||
825 | align 4 |
||
826 | .internal: |
||
827 | mov esi, ebx |
||
828 | mov edi, [eax+UART.xmit_wp] |
||
829 | .write: |
||
830 | test edx, edx |
||
831 | jz .fail |
||
832 | .wait: |
||
833 | cmp [eax+UART.xmit_free], 0 |
||
834 | jne .fill |
||
835 | |||
836 | cmp [eax+UART.state], UART_TRANSMIT |
||
837 | je .wait |
||
838 | |||
839 | mov ebx, eax |
||
840 | push edx |
||
841 | call transmit |
||
842 | pop edx |
||
843 | mov eax, ebx |
||
844 | jmp .write |
||
845 | .fill: |
||
846 | mov ecx, [eax+UART.xmit_free] |
||
847 | cmp ecx, edx |
||
848 | jbe @F |
||
849 | mov ecx, edx |
||
850 | @@: |
||
851 | push ecx |
||
852 | cld |
||
853 | rep movsb |
||
854 | pop ecx |
||
855 | sub [eax+UART.xmit_free], ecx |
||
856 | add [eax+UART.xmit_count], ecx |
||
857 | sub edx, ecx |
||
858 | jnz .wait |
||
859 | .done: |
||
860 | cmp edi, [eax+UART.xmit_top] |
||
861 | jb @F |
||
862 | sub edi, 8192 |
||
863 | @@: |
||
864 | mov [eax+UART.xmit_wp], edi |
||
865 | cmp [eax+UART.state], UART_TRANSMIT |
||
866 | je @F |
||
867 | mov ebx, eax |
||
868 | call transmit |
||
869 | @@: |
||
870 | xor eax, eax |
||
871 | ret |
||
872 | .fail: |
||
873 | or eax, -1 |
||
874 | ret |
||
875 | |||
876 | |||
877 | align 4 |
||
878 | com_2_isr: |
||
879 | mov ebx, [com2] |
||
880 | jmp com_1_isr.get_info |
||
881 | align 4 |
||
882 | com_1_isr: |
||
883 | mov ebx, [com1] |
||
884 | .get_info: |
||
885 | mov edx, [ebx+UART.base] |
||
886 | add edx, IIR_REG |
||
887 | in al, dx |
||
888 | |||
889 | test al, IIR_INTR |
||
890 | jnz .done |
||
891 | |||
892 | shr eax, 1 |
||
893 | and eax, 3 |
||
894 | |||
895 | call [isr_action+eax*4] |
||
896 | jmp .get_info |
||
897 | .done: |
||
898 | ret |
||
899 | |||
900 | align 4 |
||
901 | isr_line: |
||
902 | mov edx, [ebx+UART.base] |
||
903 | add edx, LSR_REG |
||
904 | in al, dx |
||
905 | ret |
||
906 | |||
907 | align 4 |
||
908 | isr_recieve: |
||
909 | mov esi, [ebx+UART.base] |
||
910 | add esi, LSR_REG |
||
911 | mov edi, [ebx+UART.rcvr_wp] |
||
912 | xor ecx, ecx |
||
913 | cld |
||
914 | .read: |
||
915 | mov edx, esi |
||
916 | in al, dx |
||
917 | test eax, LSR_DR |
||
918 | jz .done |
||
919 | |||
920 | mov edx, [ebx+UART.base] |
||
921 | in al, dx |
||
922 | stosb |
||
923 | inc ecx |
||
924 | jmp .read |
||
925 | .done: |
||
926 | cmp edi, [ebx+UART.rcvr_top] |
||
927 | jb @F |
||
928 | sub edi, 8192 |
||
929 | @@: |
||
930 | mov [ebx+UART.rcvr_wp], edi |
||
931 | add [ebx+UART.rcvr_count], ecx |
||
932 | ret |
||
933 | |||
934 | align 4 |
||
935 | isr_modem: |
||
936 | mov edx, [ebx+UART.base] |
||
937 | add edx, MSR_REG |
||
938 | in al, dx |
||
939 | ret |
||
940 | |||
941 | |||
942 | align 4 |
||
943 | divisor dw 2304, 1536, 1047, 857, 768, 384 |
||
944 | dw 192, 96, 64, 58, 48, 32 |
||
945 | dw 24, 16, 12, 6, 3, 2, 1 |
||
946 | |||
947 | align 4 |
||
948 | uart_func dd 0 ;SRV_GETVERSION |
||
949 | dd 0 ;PORT_OPEN |
||
950 | dd uart_close ;PORT_CLOSE |
||
951 | dd uart_reset ;PORT_RESET |
||
952 | dd uart_set_mode ;PORT_SETMODE |
||
953 | dd 0 ;PORT_GETMODE |
||
954 | dd uart_set_mcr ;PORT_SETMODEM |
||
955 | dd 0 ;PORT_GETMODEM |
||
956 | dd uart_read ;PORT_READ |
||
957 | dd uart_write ;PORT_WRITE |
||
958 | |||
959 | isr_action dd isr_modem |
||
960 | dd transmit |
||
961 | dd isr_recieve |
||
962 | dd isr_line |
||
963 | |||
964 | version dd (5 shl 16) or (UART_VERSION and 0xFFFF) |
||
965 | |||
966 | sz_uart_srv db 'UART',0 |
||
967 | |||
968 | align 4 |
||
969 | |||
970 | com1 rd 1 |
||
971 | com2 rd 1 |
||
972 |