Rev 3655 | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
1844 | jermar | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2001-2004 Jakub Jermar |
1844 | jermar | 3 | * All rights reserved. |
4 | * |
||
5 | * Redistribution and use in source and binary forms, with or without |
||
6 | * modification, are permitted provided that the following conditions |
||
7 | * are met: |
||
8 | * |
||
9 | * - Redistributions of source code must retain the above copyright |
||
10 | * notice, this list of conditions and the following disclaimer. |
||
11 | * - Redistributions in binary form must reproduce the above copyright |
||
12 | * notice, this list of conditions and the following disclaimer in the |
||
13 | * documentation and/or other materials provided with the distribution. |
||
14 | * - The name of the author may not be used to endorse or promote products |
||
15 | * derived from this software without specific prior written permission. |
||
16 | * |
||
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
||
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
||
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
||
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
27 | */ |
||
28 | |||
29 | /** @addtogroup genarch |
||
30 | * @{ |
||
31 | */ |
||
32 | /** |
||
33 | * @file |
||
34 | * @brief Headers for NS 16550 serial port / keyboard driver. |
||
35 | */ |
||
36 | |||
37 | #ifndef KERN_NS16550_H_ |
||
38 | #define KERN_NS16550_H_ |
||
39 | |||
2089 | decky | 40 | #include <console/chardev.h> |
3655 | jermar | 41 | #include <ddi/irq.h> |
2089 | decky | 42 | #include <ipc/irq.h> |
1896 | jermar | 43 | |
3655 | jermar | 44 | extern void ns16550_init(devno_t, uintptr_t, inr_t, cir_t, void *); |
1844 | jermar | 45 | extern void ns16550_poll(void); |
46 | extern void ns16550_grab(void); |
||
47 | extern void ns16550_release(void); |
||
3655 | jermar | 48 | extern char ns16550_key_read(chardev_t *); |
1919 | jermar | 49 | extern irq_ownership_t ns16550_claim(void); |
3655 | jermar | 50 | extern void ns16550_irq_handler(irq_t *, void *, ...); |
1844 | jermar | 51 | |
3577 | vana | 52 | #include <arch/types.h> |
53 | #ifndef ia64 |
||
54 | #include <arch/drivers/kbd.h> |
||
1844 | jermar | 55 | #endif |
3577 | vana | 56 | /* NS16550 registers */ |
57 | #define RBR_REG 0 /** Receiver Buffer Register. */ |
||
58 | #define IER_REG 1 /** Interrupt Enable Register. */ |
||
59 | #define IIR_REG 2 /** Interrupt Ident Register (read). */ |
||
60 | #define FCR_REG 2 /** FIFO control register (write). */ |
||
61 | #define LCR_REG 3 /** Line Control register. */ |
||
3646 | jermar | 62 | #define MCR_REG 4 /** Modem Control Register. */ |
3577 | vana | 63 | #define LSR_REG 5 /** Line Status Register. */ |
1844 | jermar | 64 | |
3577 | vana | 65 | #define IER_ERBFI 0x01 /** Enable Receive Buffer Full Interrupt. */ |
66 | |||
67 | #define LCR_DLAB 0x80 /** Divisor Latch Access bit. */ |
||
68 | |||
3646 | jermar | 69 | #define MCR_OUT2 0x08 /** OUT2. */ |
70 | |||
3577 | vana | 71 | /** Structure representing the ns16550 device. */ |
72 | typedef struct { |
||
73 | devno_t devno; |
||
3646 | jermar | 74 | /** Memory mapped registers of the ns16550. */ |
75 | volatile ioport_t io_port; |
||
3577 | vana | 76 | } ns16550_t; |
77 | |||
78 | static inline uint8_t ns16550_rbr_read(ns16550_t *dev) |
||
79 | { |
||
3646 | jermar | 80 | return inb(dev->io_port + RBR_REG); |
3577 | vana | 81 | } |
82 | static inline void ns16550_rbr_write(ns16550_t *dev, uint8_t v) |
||
83 | { |
||
3646 | jermar | 84 | outb(dev->io_port + RBR_REG, v); |
3577 | vana | 85 | } |
86 | |||
87 | static inline uint8_t ns16550_ier_read(ns16550_t *dev) |
||
88 | { |
||
3646 | jermar | 89 | return inb(dev->io_port + IER_REG); |
3577 | vana | 90 | } |
91 | |||
92 | static inline void ns16550_ier_write(ns16550_t *dev, uint8_t v) |
||
93 | { |
||
3646 | jermar | 94 | outb(dev->io_port + IER_REG, v); |
3577 | vana | 95 | } |
96 | |||
97 | static inline uint8_t ns16550_iir_read(ns16550_t *dev) |
||
98 | { |
||
3646 | jermar | 99 | return inb(dev->io_port + IIR_REG); |
3577 | vana | 100 | } |
101 | |||
102 | static inline void ns16550_fcr_write(ns16550_t *dev, uint8_t v) |
||
103 | { |
||
3646 | jermar | 104 | outb(dev->io_port + FCR_REG, v); |
3577 | vana | 105 | } |
106 | |||
107 | static inline uint8_t ns16550_lcr_read(ns16550_t *dev) |
||
108 | { |
||
3646 | jermar | 109 | return inb(dev->io_port + LCR_REG); |
3577 | vana | 110 | } |
111 | |||
112 | static inline void ns16550_lcr_write(ns16550_t *dev, uint8_t v) |
||
113 | { |
||
3646 | jermar | 114 | outb(dev->io_port + LCR_REG, v); |
3577 | vana | 115 | } |
116 | |||
117 | static inline uint8_t ns16550_lsr_read(ns16550_t *dev) |
||
118 | { |
||
3646 | jermar | 119 | return inb(dev->io_port + LSR_REG); |
3577 | vana | 120 | } |
121 | |||
3646 | jermar | 122 | static inline uint8_t ns16550_mcr_read(ns16550_t *dev) |
123 | { |
||
124 | return inb(dev->io_port + MCR_REG); |
||
125 | } |
||
3577 | vana | 126 | |
3646 | jermar | 127 | static inline void ns16550_mcr_write(ns16550_t *dev, uint8_t v) |
128 | { |
||
129 | outb(dev->io_port + MCR_REG, v); |
||
130 | } |
||
3577 | vana | 131 | |
132 | #endif |
||
133 | |||
1844 | jermar | 134 | /** @} |
135 | */ |