Rev 5363 | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
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2288 | clevermous | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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5363 | yogev_ezra | 3 | ;; Copyright (C) KolibriOS team 2004-2015. All rights reserved. ;; |
2288 | clevermous | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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7 | |||
8384 | bw | 8 | format PE DLL native 0.05 |
9 | entry START |
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2288 | clevermous | 10 | |
8384 | bw | 11 | __DEBUG__ equ 1 |
12 | __DEBUG_LEVEL__ equ 1 ; 1 = verbose, 2 = errors only |
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2288 | clevermous | 13 | |
14 | API_VERSION equ 0 |
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15 | UART_VERSION equ API_VERSION |
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16 | |||
17 | PG_SW equ 0x003 |
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18 | page_tabs equ 0xFDC00000 ;hack |
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19 | |||
20 | OS_BASE equ 0x80000000 |
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21 | SLOT_BASE equ (OS_BASE+0x0080000) |
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22 | TASK_COUNT equ (OS_BASE+0x0003004) |
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23 | CURRENT_TASK equ (OS_BASE+0x0003000) |
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24 | |||
25 | |||
8384 | bw | 26 | section '.flat' readable writable executable |
27 | |||
28 | include 'proc32.inc' |
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29 | include 'struct.inc' |
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30 | include 'macros.inc' |
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31 | include 'fdo.inc' |
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32 | include 'peimport.inc' |
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33 | |||
34 | |||
2288 | clevermous | 35 | struc APPOBJ ;common object header |
36 | { |
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37 | .magic dd ? ; |
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38 | .destroy dd ? ;internal destructor |
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39 | .fd dd ? ;next object in list |
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40 | .bk dd ? ;prev object in list |
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41 | .pid dd ? ;owner id |
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8384 | bw | 42 | } |
2288 | clevermous | 43 | |
44 | virtual at 0 |
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45 | APPOBJ APPOBJ |
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46 | end virtual |
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47 | |||
48 | THR_REG equ 0; x3f8 ;transtitter/reciever |
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49 | IER_REG equ 1; x3f9 ;interrupt enable |
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50 | IIR_REG equ 2; x3fA ;interrupt info |
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51 | LCR_REG equ 3; x3FB ;line control |
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52 | MCR_REG equ 4; x3FC ;modem control |
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53 | LSR_REG equ 5; x3FD ;line status |
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54 | MSR_REG equ 6; x3FE ;modem status |
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55 | |||
56 | LCR_5BIT equ 0x00 |
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57 | LCR_6BIT equ 0x01 |
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58 | LCR_7BIT equ 0x02 |
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59 | LCR_8BIT equ 0x03 |
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60 | LCR_STOP_1 equ 0x00 |
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61 | LCR_STOP_2 equ 0x04 |
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62 | LCR_PARITY equ 0x08 |
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63 | LCR_EVEN equ 0x10 |
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64 | LCR_STICK equ 0x20 |
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65 | LCR_BREAK equ 0x40 |
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66 | LCR_DLAB equ 0x80 |
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67 | |||
68 | LSR_DR equ 0x01 ;data ready |
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69 | LSR_OE equ 0x02 ;overrun error |
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70 | LSR_PE equ 0x04 ;parity error |
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71 | LSR_FE equ 0x08 ;framing error |
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72 | LSR_BI equ 0x10 ;break interrupt |
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73 | LSR_THRE equ 0x20 ;transmitter holding empty |
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74 | LSR_TEMT equ 0x40 ;transmitter empty |
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75 | LSR_FER equ 0x80 ;FIFO error |
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76 | |||
77 | FCR_EFIFO equ 0x01 ;enable FIFO |
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78 | FCR_CRB equ 0x02 ;clear reciever FIFO |
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79 | FCR_CXMIT equ 0x04 ;clear transmitter FIFO |
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80 | FCR_RDY equ 0x08 ;set RXRDY and TXRDY pins |
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81 | FCR_FIFO_1 equ 0x00 ;1 byte trigger |
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82 | FCR_FIFO_4 equ 0x40 ;4 bytes trigger |
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83 | FCR_FIFO_8 equ 0x80 ;8 bytes trigger |
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84 | FCR_FIFO_14 equ 0xC0 ;14 bytes trigger |
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85 | |||
86 | IIR_INTR equ 0x01 ;1= no interrupts |
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87 | |||
88 | IER_RDAI equ 0x01 ;reciever data interrupt |
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89 | IER_THRI equ 0x02 ;transmitter empty interrupt |
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90 | IER_LSI equ 0x04 ;line status interrupt |
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91 | IER_MSI equ 0x08 ;modem status interrupt |
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92 | |||
93 | MCR_DTR equ 0x01 ;0-> DTR=1, 1-> DTR=0 |
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94 | MCR_RTS equ 0x02 ;0-> RTS=1, 1-> RTS=0 |
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95 | MCR_OUT_1 equ 0x04 ;0-> OUT1=1, 1-> OUT1=0 |
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96 | MCR_OUT_2 equ 0x08 ;0-> OUT2=1, 1-> OUT2=0; enable intr |
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8384 | bw | 97 | MCR_LOOP equ 0x10 ;loopback mode |
2288 | clevermous | 98 | |
99 | MSR_DCTS equ 0x01 ;delta clear to send |
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100 | MSR_DDSR equ 0x02 ;delta data set redy |
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101 | MSR_TERI equ 0x04 ;trailinh edge of ring |
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102 | MSR_DDCD equ 0x08 ;delta carrier detect |
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103 | |||
104 | |||
105 | RATE_50 equ 0 |
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106 | RATE_75 equ 1 |
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107 | RATE_110 equ 2 |
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108 | RATE_134 equ 3 |
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109 | RATE_150 equ 4 |
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110 | RATE_300 equ 5 |
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111 | RATE_600 equ 6 |
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112 | RATE_1200 equ 7 |
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113 | RATE_1800 equ 8 |
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114 | RATE_2000 equ 9 |
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115 | RATE_2400 equ 10 |
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116 | RATE_3600 equ 11 |
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117 | RATE_4800 equ 12 |
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118 | RATE_7200 equ 13 |
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119 | RATE_9600 equ 14 |
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120 | RATE_19200 equ 15 |
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121 | RATE_38400 equ 16 |
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122 | RATE_57600 equ 17 |
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123 | RATE_115200 equ 18 |
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124 | |||
125 | COM_1 equ 1 |
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126 | COM_2 equ 2 |
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127 | COM_3 equ 3 |
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128 | COM_4 equ 4 |
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129 | COM_MAX equ 2 ;only two port supported |
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130 | |||
131 | COM_1_BASE equ 0x3F8 |
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132 | COM_2_BASE equ 0x2F8 |
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133 | |||
134 | COM_1_IRQ equ 4 |
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135 | COM_2_IRQ equ 3 |
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136 | |||
137 | UART_CLOSED equ 0 |
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138 | UART_TRANSMIT equ 1 |
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139 | UART_STOP equ 2 |
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140 | |||
141 | struc UART |
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142 | { |
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143 | .lock dd ? |
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144 | .base dd ? |
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145 | .lcr_reg dd ? |
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146 | .mcr_reg dd ? |
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147 | .rate dd ? |
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148 | .mode dd ? |
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149 | .state dd ? |
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150 | |||
151 | .rcvr_buff dd ? |
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152 | .rcvr_rp dd ? |
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153 | .rcvr_wp dd ? |
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154 | .rcvr_count dd ? |
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155 | .rcvr_top dd ? |
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156 | |||
157 | .xmit_buff dd ? |
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158 | .xmit_rp dd ? |
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159 | .xmit_wp dd ? |
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160 | .xmit_count dd ? |
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161 | .xmit_free dd ? |
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162 | .xmit_top dd ? |
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163 | } |
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8384 | bw | 164 | |
2288 | clevermous | 165 | virtual at 0 |
166 | UART UART |
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167 | end virtual |
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168 | |||
8384 | bw | 169 | UART_SIZE equ 18*4 |
2288 | clevermous | 170 | |
171 | struc CONNECTION |
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172 | { |
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173 | .magic dd ? ;'CNCT' |
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174 | .destroy dd ? ;internal destructor |
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175 | .fd dd ? ;next object in list |
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176 | .bk dd ? ;prev object in list |
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177 | .pid dd ? ;owner id |
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178 | |||
179 | .id dd ? ;reserved |
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180 | .uart dd ? ;uart pointer |
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181 | } |
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182 | |||
183 | virtual at 0 |
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184 | CONNECTION CONNECTION |
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185 | end virtual |
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186 | |||
187 | CONNECTION_SIZE equ 7*4 |
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188 | |||
189 | |||
8384 | bw | 190 | ;proc START c, state:dword |
191 | ; cmp [state], 1 |
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2288 | clevermous | 192 | |
8384 | bw | 193 | align 4 |
194 | proc START c, state:dword |
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195 | DEBUGF 1, "Loading driver UART (entry at %x)...\n", START |
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2288 | clevermous | 196 | |
8384 | bw | 197 | push esi ; [bw] ??? |
198 | cmp [state], DRV_ENTRY |
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2288 | clevermous | 199 | jne .stop |
200 | |||
8384 | bw | 201 | mov esi, msg_start |
202 | invoke SysMsgBoardStr |
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203 | |||
204 | mov eax, UART_SIZE |
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205 | invoke Kmalloc |
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206 | ; invoke Kmalloc, UART_SIZE (1) -- failure |
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207 | ; invoke Kmalloc, UART_SIZE (2) -- success |
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208 | ; DEBUGF 1,"[UART.START] Kmalloc: UART_SIZE=%d eax=%d\n", UART_SIZE, eax |
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2288 | clevermous | 209 | test eax, eax |
210 | jz .fail |
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211 | |||
8384 | bw | 212 | DEBUGF 1, "Structure %x allocated\n", eax |
213 | |||
2288 | clevermous | 214 | mov [com1], eax |
215 | mov edi, eax |
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216 | mov ecx, UART_SIZE/4 |
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217 | xor eax, eax |
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218 | cld |
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219 | rep stosd |
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220 | |||
221 | mov eax, [com1] |
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222 | mov [eax+UART.base], COM_1_BASE |
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223 | |||
8384 | bw | 224 | invoke AllocKernelSpace, 32768 |
2288 | clevermous | 225 | |
226 | mov edi, [com1] |
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227 | mov edx, eax |
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228 | |||
229 | mov [edi+UART.rcvr_buff], eax |
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230 | add eax, 8192 |
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231 | mov [edi+UART.rcvr_top], eax |
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232 | add eax, 8192 |
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233 | mov [edi+UART.xmit_buff], eax |
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234 | add eax, 8192 |
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235 | mov [edi+UART.xmit_top], eax |
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236 | |||
8384 | bw | 237 | invoke AllocPage |
2288 | clevermous | 238 | test eax, eax |
239 | jz .fail |
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240 | |||
241 | shr edx, 12 |
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242 | or eax, PG_SW |
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243 | mov [page_tabs+edx*4], eax |
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244 | mov [page_tabs+edx*4+8], eax |
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245 | |||
8384 | bw | 246 | invoke AllocPage |
2288 | clevermous | 247 | test eax, eax |
248 | jz .fail |
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249 | |||
250 | or eax, PG_SW |
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251 | mov [page_tabs+edx*4+4], eax |
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252 | mov [page_tabs+edx*4+12], eax |
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253 | |||
8384 | bw | 254 | invoke AllocPage |
2288 | clevermous | 255 | test eax, eax |
256 | jz .fail |
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257 | |||
258 | or eax, PG_SW |
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259 | mov [page_tabs+edx*4+16], eax |
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260 | mov [page_tabs+edx*4+24], eax |
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261 | |||
8384 | bw | 262 | invoke AllocPage |
2288 | clevermous | 263 | test eax, eax |
264 | jz .fail |
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265 | |||
266 | or eax, PG_SW |
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267 | mov [page_tabs+edx*4+20], eax |
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268 | mov [page_tabs+edx*4+28], eax |
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269 | |||
270 | mov eax, [edi+UART.rcvr_buff] |
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271 | invlpg [eax] |
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272 | invlpg [eax+0x1000] |
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273 | invlpg [eax+0x2000] |
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274 | invlpg [eax+0x3000] |
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275 | invlpg [eax+0x4000] |
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276 | invlpg [eax+0x5000] |
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277 | invlpg [eax+0x6000] |
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278 | invlpg [eax+0x7000] |
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279 | |||
280 | mov eax, edi |
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281 | call uart_reset.internal ;eax= uart |
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282 | |||
8384 | bw | 283 | invoke AttachIntHandler, COM_1_IRQ, com_1_isr, dword 0 |
284 | test eax, eax |
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285 | jnz @f |
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286 | DEBUGF 2, "Could not attach int handler (%x)\n", COM_1_IRQ |
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287 | jmp .fail |
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288 | |||
289 | @@: |
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290 | DEBUGF 1, "Attached int handler (%x)\n", COM_1_IRQ |
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291 | pop esi |
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292 | invoke RegService, sz_uart_srv, service_proc |
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2288 | clevermous | 293 | ret |
8384 | bw | 294 | |
2288 | clevermous | 295 | .fail: |
296 | .stop: |
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8384 | bw | 297 | DEBUGF 2, "Failed\n" |
298 | pop esi |
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2288 | clevermous | 299 | xor eax, eax |
300 | ret |
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301 | endp |
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302 | |||
303 | |||
304 | handle equ IOCTL.handle |
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305 | io_code equ IOCTL.io_code |
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306 | input equ IOCTL.input |
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307 | inp_size equ IOCTL.inp_size |
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308 | output equ IOCTL.output |
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309 | out_size equ IOCTL.out_size |
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310 | |||
311 | SRV_GETVERSION equ 0 |
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312 | PORT_OPEN equ 1 |
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313 | PORT_CLOSE equ 2 |
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314 | PORT_RESET equ 3 |
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315 | PORT_SETMODE equ 4 |
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316 | PORT_GETMODE equ 5 |
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317 | PORT_SETMCR equ 6 |
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318 | PORT_GETMCR equ 7 |
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319 | PORT_READ equ 8 |
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320 | PORT_WRITE equ 9 |
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321 | |||
322 | align 4 |
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323 | proc service_proc stdcall, ioctl:dword |
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324 | mov ebx, [ioctl] |
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325 | mov eax, [ebx+io_code] |
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326 | cmp eax, PORT_WRITE |
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327 | ja .fail |
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328 | |||
329 | cmp eax, SRV_GETVERSION |
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330 | jne @F |
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331 | |||
332 | mov eax, [ebx+output] |
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333 | cmp [ebx+out_size], 4 |
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334 | jne .fail |
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335 | mov [eax], dword UART_VERSION |
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336 | xor eax, eax |
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337 | ret |
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338 | @@: |
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339 | cmp eax, PORT_OPEN |
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340 | jne @F |
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341 | |||
342 | cmp [ebx+out_size], 4 |
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343 | jne .fail |
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344 | |||
345 | mov ebx, [ebx+input] |
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346 | mov eax, [ebx] |
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347 | call uart_open |
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348 | mov ebx, [ioctl] |
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349 | mov ebx, [ebx+output] |
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350 | mov [ebx], ecx |
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351 | ret |
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352 | @@: |
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353 | mov esi, [ebx+input] ;input buffer |
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354 | mov edi, [ebx+output] |
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355 | call [uart_func+eax*4] |
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356 | ret |
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357 | .fail: |
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358 | or eax, -1 |
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359 | ret |
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360 | endp |
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361 | |||
8384 | bw | 362 | ;restore handle |
363 | ;restore io_code |
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364 | ;restore input |
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365 | ;restore inp_size |
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366 | ;restore output |
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367 | ;restore out_size |
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2288 | clevermous | 368 | |
369 | |||
370 | ; param |
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371 | ; esi= input buffer |
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372 | ; +0 connection |
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373 | ; |
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374 | ; retval |
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375 | ; eax= error code |
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376 | |||
377 | align 4 |
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378 | uart_reset: |
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379 | mov eax, [esi] |
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380 | cmp [eax+APPOBJ.magic], 'CNCT' |
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381 | jne .fail |
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382 | |||
383 | cmp [eax+APPOBJ.destroy], uart_close.destroy |
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384 | jne .fail |
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385 | |||
386 | mov eax, [eax+CONNECTION.uart] |
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387 | test eax, eax |
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388 | jz .fail |
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389 | |||
390 | ; set mode 2400 bod 8-bit |
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391 | ; disable DTR & RTS |
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392 | ; clear FIFO |
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393 | ; clear pending interrupts |
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394 | ; |
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395 | ; param |
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396 | ; eax= uart |
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397 | |||
398 | align 4 |
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399 | .internal: |
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400 | mov esi, eax |
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401 | mov [eax+UART.state], UART_CLOSED |
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402 | mov edx, [eax+UART.base] |
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403 | add edx, MCR_REG |
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404 | xor eax, eax |
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405 | out dx, al ;clear DTR & RTS |
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406 | |||
407 | mov eax, esi |
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8384 | bw | 408 | ; mov ebx, RATE_2400 |
409 | mov ebx, RATE_115200 |
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2288 | clevermous | 410 | mov ecx, LCR_8BIT+LCR_STOP_1 |
411 | call uart_set_mode.internal |
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412 | |||
413 | mov edx, [esi+UART.base] |
||
414 | add edx, IIR_REG |
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415 | mov eax, FCR_EFIFO+FCR_CRB+FCR_CXMIT+FCR_FIFO_14 |
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416 | out dx, al |
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417 | .clear_RB: |
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418 | mov edx, [esi+UART.base] |
||
419 | add edx, LSR_REG |
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420 | in al, dx |
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421 | test eax, LSR_DR |
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422 | jz @F |
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423 | |||
424 | mov edx, [esi+UART.base] |
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425 | in al, dx |
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426 | jmp .clear_RB |
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427 | @@: |
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428 | mov edx, [esi+UART.base] |
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429 | add edx, IER_REG |
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430 | mov eax, IER_RDAI+IER_THRI+IER_LSI |
||
431 | out dx, al |
||
432 | .clear_IIR: |
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433 | mov edx, [esi+UART.base] |
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434 | add edx, IIR_REG |
||
435 | in al, dx |
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436 | test al, IIR_INTR |
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437 | jnz .done |
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438 | |||
439 | shr eax, 1 |
||
440 | and eax, 3 |
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441 | jnz @F |
||
442 | |||
443 | mov edx, [esi+UART.base] |
||
444 | add edx, MSR_REG |
||
445 | in al, dx |
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446 | jmp .clear_IIR |
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447 | @@: |
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448 | cmp eax, 1 |
||
449 | je .clear_IIR |
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450 | |||
451 | cmp eax, 2 |
||
452 | jne @F |
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453 | |||
454 | mov edx, [esi+UART.base] |
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455 | in al, dx |
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456 | jmp .clear_IIR |
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457 | @@: |
||
458 | mov edx, [esi+UART.base] |
||
459 | add edx, LSR_REG |
||
460 | in al, dx |
||
461 | jmp .clear_IIR |
||
462 | .done: |
||
463 | mov edi, [esi+UART.rcvr_buff] |
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464 | mov ecx, 8192/4 |
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465 | xor eax, eax |
||
466 | |||
467 | mov [esi+UART.rcvr_rp], edi |
||
468 | mov [esi+UART.rcvr_wp], edi |
||
469 | mov [esi+UART.rcvr_count], eax |
||
470 | |||
471 | cld |
||
472 | rep stosd |
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473 | |||
474 | mov edi, [esi+UART.xmit_buff] |
||
475 | mov ecx, 8192/4 |
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476 | |||
477 | mov [esi+UART.xmit_rp], edi |
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478 | mov [esi+UART.xmit_wp], edi |
||
479 | mov [esi+UART.xmit_count], eax |
||
480 | mov [esi+UART.xmit_free], 8192 |
||
481 | |||
482 | rep stosd |
||
483 | ret ;eax= 0 |
||
484 | .fail: |
||
485 | or eax, -1 |
||
486 | ret |
||
487 | |||
488 | ; param |
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489 | ; esi= input buffer |
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490 | ; +0 connection |
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491 | ; +4 rate |
||
492 | ; +8 mode |
||
493 | ; |
||
494 | ; retval |
||
495 | ; eax= error code |
||
496 | |||
497 | align 4 |
||
498 | uart_set_mode: |
||
499 | mov eax, [esi] |
||
500 | cmp [eax+APPOBJ.magic], 'CNCT' |
||
501 | jne .fail |
||
502 | |||
503 | cmp [eax+APPOBJ.destroy], uart_close.destroy |
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504 | jne .fail |
||
505 | |||
506 | mov eax, [eax+CONNECTION.uart] |
||
507 | test eax, eax |
||
508 | jz .fail |
||
509 | |||
510 | mov ebx, [esi+4] |
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511 | mov ecx, [esi+8] |
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512 | |||
513 | ; param |
||
514 | ; eax= uart |
||
515 | ; ebx= baud rate |
||
516 | ; ecx= mode |
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517 | |||
518 | align 4 |
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519 | .internal: |
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520 | cmp ebx, RATE_115200 |
||
521 | ja .fail |
||
522 | |||
523 | cmp ecx, LCR_BREAK |
||
524 | jae .fail |
||
525 | |||
526 | mov [eax+UART.rate], ebx |
||
527 | mov [eax+UART.mode], ecx |
||
528 | |||
529 | mov esi, eax |
||
530 | mov bx, [divisor+ebx*2] |
||
531 | |||
532 | mov edx, [esi+UART.base] |
||
533 | push edx |
||
534 | add edx, LCR_REG |
||
535 | in al, dx |
||
536 | or al, 0x80 |
||
537 | out dx, al |
||
538 | |||
539 | pop edx |
||
540 | mov al, bl |
||
541 | out dx, al |
||
542 | |||
543 | inc dx |
||
544 | mov al, bh |
||
545 | out dx, al |
||
546 | |||
547 | add edx, LCR_REG-1 |
||
548 | mov eax, ecx |
||
549 | out dx, al |
||
550 | xor eax, eax |
||
551 | ret |
||
552 | .fail: |
||
553 | or eax, -1 |
||
554 | ret |
||
555 | |||
556 | ; param |
||
557 | ; esi= input buffer |
||
558 | ; +0 connection |
||
559 | ; +4 modem control reg valie |
||
560 | ; |
||
561 | ; retval |
||
562 | ; eax= error code |
||
563 | |||
564 | align 4 |
||
565 | uart_set_mcr: |
||
566 | |||
567 | mov eax, [esi] |
||
568 | cmp [eax+APPOBJ.magic], 'CNCT' |
||
569 | jne .fail |
||
570 | |||
571 | cmp [eax+APPOBJ.destroy], uart_close.destroy |
||
572 | jne .fail |
||
573 | |||
574 | mov eax, [eax+CONNECTION.uart] |
||
575 | test eax, eax |
||
576 | jz .fail |
||
577 | |||
578 | mov ebx, [esi+4] |
||
579 | |||
580 | mov [eax+UART.mcr_reg], ebx |
||
581 | mov edx, [eax+UART.base] |
||
582 | add edx, MCR_REG |
||
583 | mov al, bl |
||
584 | out dx, al |
||
585 | xor eax, eax |
||
586 | ret |
||
587 | .fail: |
||
588 | or eax, -1 |
||
589 | ret |
||
590 | |||
591 | ; param |
||
592 | ; eax= port |
||
593 | ; |
||
594 | ; retval |
||
595 | ; ecx= connection |
||
596 | ; eax= error code |
||
597 | |||
598 | align 4 |
||
599 | uart_open: |
||
600 | dec eax |
||
601 | cmp eax, COM_MAX |
||
602 | jae .fail |
||
603 | |||
8384 | bw | 604 | mov esi, [com1+eax*4] ;uart |
2288 | clevermous | 605 | push esi |
606 | .do_wait: |
||
607 | cmp dword [esi+UART.lock], 0 |
||
608 | je .get_lock |
||
609 | ; call change_task |
||
610 | jmp .do_wait |
||
611 | .get_lock: |
||
612 | mov eax, 1 |
||
613 | xchg eax, [esi+UART.lock] |
||
614 | test eax, eax |
||
615 | jnz .do_wait |
||
616 | |||
617 | mov eax, esi ;uart |
||
618 | call uart_reset.internal |
||
619 | |||
620 | mov ebx, [CURRENT_TASK] |
||
621 | shl ebx, 5 |
||
622 | mov ebx, [CURRENT_TASK+ebx+4] |
||
623 | mov eax, CONNECTION_SIZE |
||
8384 | bw | 624 | invoke CreateObject |
2288 | clevermous | 625 | pop esi ;uart |
626 | test eax, eax |
||
627 | jz .fail |
||
628 | |||
629 | mov [eax+APPOBJ.magic], 'CNCT' |
||
630 | mov [eax+APPOBJ.destroy], uart_close.destroy |
||
631 | mov [eax+CONNECTION.uart], esi |
||
632 | mov ecx, eax |
||
633 | xor eax, eax |
||
634 | ret |
||
635 | .fail: |
||
636 | or eax, -1 |
||
637 | ret |
||
638 | restore .uart |
||
639 | |||
640 | ; param |
||
641 | ; esi= input buffer |
||
642 | |||
643 | align 4 |
||
644 | uart_close: |
||
645 | mov eax, [esi] |
||
646 | cmp [eax+APPOBJ.magic], 'CNCT' |
||
647 | jne .fail |
||
648 | |||
649 | cmp [eax+APPOBJ.destroy], uart_close.destroy |
||
650 | jne .fail |
||
8384 | bw | 651 | |
2288 | clevermous | 652 | .destroy: |
8384 | bw | 653 | ; DEBUGF 1, "[UART.destroy] eax=%x uart=%x\n", eax, [eax+CONNECTION.uart] |
2288 | clevermous | 654 | push [eax+CONNECTION.uart] |
8384 | bw | 655 | invoke DestroyObject ;eax= object |
656 | pop eax ;eax= uart |
||
2288 | clevermous | 657 | test eax, eax |
658 | jz .fail |
||
659 | |||
660 | mov [eax+UART.state], UART_CLOSED |
||
8384 | bw | 661 | mov [eax+UART.lock], 0 ;release port |
2288 | clevermous | 662 | xor eax, eax |
663 | ret |
||
664 | .fail: |
||
665 | or eax, -1 |
||
666 | ret |
||
667 | |||
668 | |||
669 | ; param |
||
670 | ; eax= uart |
||
671 | ; ebx= baud rate |
||
672 | |||
673 | align 4 |
||
674 | set_rate: |
||
675 | cmp ebx, RATE_115200 |
||
676 | ja .fail |
||
677 | |||
678 | mov [eax+UART.rate], ebx |
||
679 | mov bx, [divisor+ebx*2] |
||
680 | |||
681 | mov edx, [eax+UART.base] |
||
682 | add edx, LCR_REG |
||
683 | in al, dx |
||
684 | push eax |
||
685 | or al, 0x80 |
||
686 | out dx, al |
||
687 | |||
688 | sub edx, LCR_REG |
||
689 | mov al, bl |
||
690 | out dx, al |
||
691 | |||
692 | inc edx |
||
693 | mov al, bh |
||
694 | out dx, al |
||
695 | |||
696 | pop eax |
||
697 | add edx, LCR_REG-1 |
||
698 | out dx, al |
||
699 | .fail: |
||
700 | ret |
||
701 | |||
702 | |||
703 | ; param |
||
704 | ; ebx= uart |
||
705 | |||
706 | align 4 |
||
707 | transmit: |
||
708 | push esi |
||
709 | push edi |
||
710 | |||
711 | mov edx, [ebx+UART.base] |
||
712 | |||
713 | pushfd |
||
714 | cli |
||
715 | |||
716 | mov esi, [ebx+UART.xmit_rp] |
||
717 | mov ecx, [ebx+UART.xmit_count] |
||
718 | test ecx, ecx |
||
719 | je .stop |
||
720 | |||
721 | cmp ecx, 16 |
||
722 | jbe @F |
||
723 | mov ecx, 16 |
||
724 | @@: |
||
725 | sub [ebx+UART.xmit_count], ecx |
||
726 | add [ebx+UART.xmit_free], ecx |
||
727 | cld |
||
728 | @@: |
||
729 | lodsb |
||
730 | out dx, al |
||
731 | dec ecx |
||
732 | jnz @B |
||
733 | |||
734 | cmp esi, [ebx+UART.xmit_top] |
||
735 | jb @F |
||
736 | sub esi, 8192 |
||
737 | @@: |
||
738 | mov [ebx+UART.xmit_rp], esi |
||
739 | |||
740 | cmp [ebx+UART.xmit_count], 0 |
||
741 | je .stop |
||
742 | |||
743 | mov [ebx+UART.state], UART_TRANSMIT |
||
744 | jmp @F |
||
745 | .stop: |
||
746 | mov [ebx+UART.state], UART_STOP |
||
747 | @@: |
||
748 | popfd |
||
749 | pop edi |
||
750 | pop esi |
||
751 | ret |
||
752 | |||
753 | |||
754 | ; param |
||
755 | ; esi= input buffer |
||
756 | ; +0 connection |
||
757 | ; +4 dst buffer |
||
758 | ; +8 dst size |
||
759 | ; edi= output buffer |
||
760 | ; +0 bytes read |
||
761 | |||
762 | ; retval |
||
763 | ; eax= error code |
||
764 | |||
765 | align 4 |
||
766 | uart_read: |
||
767 | mov eax, [esi] |
||
768 | cmp [eax+APPOBJ.magic], 'CNCT' |
||
769 | jne .fail |
||
770 | |||
771 | cmp [eax+APPOBJ.destroy], uart_close.destroy |
||
772 | jne .fail |
||
773 | |||
774 | mov eax, [eax+CONNECTION.uart] |
||
775 | test eax, eax |
||
776 | jz .fail |
||
777 | |||
778 | mov ebx, [esi+8] ;dst size |
||
779 | mov ecx, [eax+UART.rcvr_count] |
||
780 | cmp ecx, ebx |
||
781 | jbe @F |
||
782 | mov ecx, ebx |
||
783 | @@: |
||
784 | mov [edi], ecx ;bytes read |
||
785 | test ecx, ecx |
||
786 | jz .done |
||
787 | |||
788 | push ecx |
||
789 | |||
790 | mov edi, [esi+4] ;dst |
||
791 | mov esi, [eax+UART.rcvr_rp] |
||
792 | cld |
||
793 | rep movsb |
||
794 | pop ecx |
||
795 | |||
796 | cmp esi, [eax+UART.rcvr_top] |
||
797 | jb @F |
||
798 | sub esi, 8192 |
||
799 | @@: |
||
800 | mov [eax+UART.rcvr_rp], esi |
||
801 | sub [eax+UART.rcvr_count], ecx |
||
802 | .done: |
||
803 | xor eax, eax |
||
804 | ret |
||
805 | .fail: |
||
806 | or eax, -1 |
||
807 | ret |
||
808 | |||
809 | ; param |
||
810 | ; esi= input buffer |
||
811 | ; +0 connection |
||
812 | ; +4 src buffer |
||
813 | ; +8 src size |
||
814 | ; |
||
815 | ; retval |
||
816 | ; eax= error code |
||
817 | |||
818 | align 4 |
||
819 | uart_write: |
||
820 | mov eax, [esi] |
||
821 | cmp [eax+APPOBJ.magic], 'CNCT' |
||
822 | jne .fail |
||
823 | |||
824 | cmp [eax+APPOBJ.destroy], uart_close.destroy |
||
825 | jne .fail |
||
826 | |||
827 | mov eax, [eax+CONNECTION.uart] |
||
828 | test eax, eax |
||
829 | jz .fail |
||
830 | |||
831 | mov ebx, [esi+4] |
||
832 | mov edx, [esi+8] |
||
833 | |||
834 | ; param |
||
835 | ; eax= uart |
||
836 | ; ebx= src |
||
837 | ; edx= count |
||
838 | |||
839 | align 4 |
||
840 | .internal: |
||
841 | mov esi, ebx |
||
842 | mov edi, [eax+UART.xmit_wp] |
||
843 | .write: |
||
844 | test edx, edx |
||
845 | jz .fail |
||
846 | .wait: |
||
847 | cmp [eax+UART.xmit_free], 0 |
||
848 | jne .fill |
||
849 | |||
850 | cmp [eax+UART.state], UART_TRANSMIT |
||
851 | je .wait |
||
852 | |||
853 | mov ebx, eax |
||
854 | push edx |
||
855 | call transmit |
||
856 | pop edx |
||
857 | mov eax, ebx |
||
858 | jmp .write |
||
859 | .fill: |
||
860 | mov ecx, [eax+UART.xmit_free] |
||
861 | cmp ecx, edx |
||
862 | jbe @F |
||
863 | mov ecx, edx |
||
864 | @@: |
||
865 | push ecx |
||
866 | cld |
||
867 | rep movsb |
||
868 | pop ecx |
||
869 | sub [eax+UART.xmit_free], ecx |
||
870 | add [eax+UART.xmit_count], ecx |
||
871 | sub edx, ecx |
||
872 | jnz .wait |
||
873 | .done: |
||
874 | cmp edi, [eax+UART.xmit_top] |
||
875 | jb @F |
||
876 | sub edi, 8192 |
||
877 | @@: |
||
878 | mov [eax+UART.xmit_wp], edi |
||
879 | cmp [eax+UART.state], UART_TRANSMIT |
||
880 | je @F |
||
881 | mov ebx, eax |
||
882 | call transmit |
||
883 | @@: |
||
884 | xor eax, eax |
||
885 | ret |
||
886 | .fail: |
||
887 | or eax, -1 |
||
888 | ret |
||
889 | |||
890 | |||
891 | align 4 |
||
892 | com_2_isr: |
||
893 | mov ebx, [com2] |
||
894 | jmp com_1_isr.get_info |
||
8384 | bw | 895 | |
2288 | clevermous | 896 | align 4 |
897 | com_1_isr: |
||
898 | mov ebx, [com1] |
||
8384 | bw | 899 | |
2288 | clevermous | 900 | .get_info: |
901 | mov edx, [ebx+UART.base] |
||
902 | add edx, IIR_REG |
||
903 | in al, dx |
||
904 | |||
905 | test al, IIR_INTR |
||
906 | jnz .done |
||
907 | |||
908 | shr eax, 1 |
||
909 | and eax, 3 |
||
910 | |||
911 | call [isr_action+eax*4] |
||
912 | jmp .get_info |
||
913 | .done: |
||
914 | ret |
||
915 | |||
916 | align 4 |
||
917 | isr_line: |
||
918 | mov edx, [ebx+UART.base] |
||
919 | add edx, LSR_REG |
||
920 | in al, dx |
||
921 | ret |
||
922 | |||
923 | align 4 |
||
924 | isr_recieve: |
||
8384 | bw | 925 | ; DEBUGF 1, "[UART.isr_recieve] ebx=%x\n", ebx |
2288 | clevermous | 926 | mov esi, [ebx+UART.base] |
927 | add esi, LSR_REG |
||
928 | mov edi, [ebx+UART.rcvr_wp] |
||
929 | xor ecx, ecx |
||
930 | cld |
||
931 | .read: |
||
932 | mov edx, esi |
||
933 | in al, dx |
||
934 | test eax, LSR_DR |
||
935 | jz .done |
||
936 | |||
937 | mov edx, [ebx+UART.base] |
||
938 | in al, dx |
||
939 | stosb |
||
940 | inc ecx |
||
941 | jmp .read |
||
942 | .done: |
||
943 | cmp edi, [ebx+UART.rcvr_top] |
||
944 | jb @F |
||
945 | sub edi, 8192 |
||
946 | @@: |
||
947 | mov [ebx+UART.rcvr_wp], edi |
||
948 | add [ebx+UART.rcvr_count], ecx |
||
949 | ret |
||
950 | |||
951 | align 4 |
||
952 | isr_modem: |
||
953 | mov edx, [ebx+UART.base] |
||
954 | add edx, MSR_REG |
||
955 | in al, dx |
||
956 | ret |
||
957 | |||
958 | |||
959 | align 4 |
||
960 | divisor dw 2304, 1536, 1047, 857, 768, 384 |
||
961 | dw 192, 96, 64, 58, 48, 32 |
||
962 | dw 24, 16, 12, 6, 3, 2, 1 |
||
963 | |||
964 | align 4 |
||
965 | uart_func dd 0 ;SRV_GETVERSION |
||
966 | dd 0 ;PORT_OPEN |
||
967 | dd uart_close ;PORT_CLOSE |
||
968 | dd uart_reset ;PORT_RESET |
||
969 | dd uart_set_mode ;PORT_SETMODE |
||
970 | dd 0 ;PORT_GETMODE |
||
971 | dd uart_set_mcr ;PORT_SETMODEM |
||
972 | dd 0 ;PORT_GETMODEM |
||
973 | dd uart_read ;PORT_READ |
||
974 | dd uart_write ;PORT_WRITE |
||
975 | |||
976 | isr_action dd isr_modem |
||
977 | dd transmit |
||
978 | dd isr_recieve |
||
979 | dd isr_line |
||
980 | |||
981 | version dd (5 shl 16) or (UART_VERSION and 0xFFFF) |
||
982 | |||
8384 | bw | 983 | sz_uart_srv db 'UART', 0 |
984 | msg_start db 'Loading UART driver...',13,10,0 |
||
2288 | clevermous | 985 | |
8384 | bw | 986 | include_debug_strings ; All data wich FDO uses will be included here |
987 | |||
2288 | clevermous | 988 | align 4 |
989 | com1 rd 1 |
||
990 | com2 rd 1 |
||
991 | |||
8384 | bw | 992 | align 4 |
993 | data fixups |
||
994 | end data |