1 | /** |
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2 | * @file |
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3 | * |
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4 | */ |
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5 | |
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6 | /* |
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7 | * COPYRIGHT (c) 1998 by Radstone Technology |
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8 | * |
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9 | * THIS FILE IS PROVIDED TO YOU, THE USER, "AS IS", WITHOUT WARRANTY OF ANY |
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10 | * KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE |
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11 | * IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK |
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12 | * AS TO THE QUALITY AND PERFORMANCE OF ALL CODE IN THIS FILE IS WITH YOU. |
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13 | * |
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14 | * You are hereby granted permission to use, copy, modify, and distribute |
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15 | * this file, provided that this notice, plus the above copyright notice |
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16 | * and disclaimer, appears in all copies. Radstone Technology will provide |
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17 | * no support for this code. |
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18 | * |
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19 | * COPYRIGHT (c) 1989-2012. |
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20 | * On-Line Applications Research Corporation (OAR). |
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21 | * |
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22 | * The license and distribution terms for this file may be |
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23 | * found in the file LICENSE in this distribution or at |
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24 | * http://www.rtems.org/license/LICENSE. |
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25 | */ |
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26 | |
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27 | #ifndef _NS16550_H_ |
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28 | #define _NS16550_H_ |
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29 | |
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30 | #include <rtems/termiostypes.h> |
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31 | #include <libchip/serial.h> |
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32 | |
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33 | #ifdef __cplusplus |
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34 | extern "C" { |
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35 | #endif |
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36 | |
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37 | /* |
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38 | * Driver function table |
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39 | */ |
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40 | |
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41 | extern const console_fns ns16550_fns; |
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42 | extern const console_fns ns16550_fns_polled; |
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43 | |
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44 | /* |
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45 | * Flow control function tables |
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46 | */ |
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47 | |
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48 | extern const console_flow ns16550_flow_RTSCTS; |
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49 | extern const console_flow ns16550_flow_DTRCTS; |
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50 | |
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51 | /* |
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52 | * Helpers for printk |
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53 | */ |
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54 | void ns16550_outch_polled(console_tbl *c, char out); |
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55 | int ns16550_inch_polled(console_tbl *c); |
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56 | |
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57 | /* Alternative NS16550 driver using the Termios device context */ |
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58 | |
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59 | typedef uint8_t (*ns16550_get_reg)(uintptr_t port, uint8_t reg); |
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60 | |
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61 | typedef void (*ns16550_set_reg)(uintptr_t port, uint8_t reg, uint8_t value); |
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62 | |
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63 | typedef struct { |
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64 | rtems_termios_device_context base; |
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65 | ns16550_get_reg get_reg; |
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66 | ns16550_set_reg set_reg; |
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67 | uintptr_t port; |
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68 | rtems_vector_number irq; |
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69 | uint32_t clock; |
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70 | uint32_t initial_baud; |
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71 | bool has_fractional_divider_register; |
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72 | uint8_t modem_control; |
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73 | size_t out_total; |
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74 | size_t out_remaining; |
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75 | size_t out_current; |
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76 | const char *out_buf; |
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77 | rtems_termios_tty *tty; |
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78 | } ns16550_context; |
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79 | |
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80 | extern const rtems_termios_device_handler ns16550_handler_interrupt; |
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81 | extern const rtems_termios_device_handler ns16550_handler_polled; |
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82 | extern const rtems_termios_device_handler ns16550_handler_task; |
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83 | |
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84 | extern const rtems_termios_device_flow ns16550_flow_rtscts; |
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85 | extern const rtems_termios_device_flow ns16550_flow_dtrcts; |
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86 | |
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87 | void ns16550_polled_putchar(rtems_termios_device_context *base, char out); |
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88 | |
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89 | int ns16550_polled_getchar(rtems_termios_device_context *base); |
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90 | |
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91 | bool ns16550_probe(rtems_termios_device_context *base); |
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92 | |
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93 | #ifdef __cplusplus |
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94 | } |
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95 | #endif |
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96 | |
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97 | #endif /* _NS16550_H_ */ |
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