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1 | /* |
1 | /* |
2 | * Copyright (c) 2006 Jakub Jermar |
2 | * Copyright (c) 2006 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
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 |
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. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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 |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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 |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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 |
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. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup sparc64 |
29 | /** @addtogroup sparc64 |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #ifndef KERN_sparc64_NS16550_H_ |
35 | #ifndef KERN_sparc64_NS16550_H_ |
36 | #define KERN_sparc64_NS16550_H_ |
36 | #define KERN_sparc64_NS16550_H_ |
37 | 37 | ||
38 | #include <arch/types.h> |
- | |
39 | #include <arch/drivers/kbd.h> |
- | |
40 | - | ||
41 | /* NS16550 registers */ |
- | |
42 | #define RBR_REG 0 /** Receiver Buffer Register. */ |
- | |
43 | #define IER_REG 1 /** Interrupt Enable Register. */ |
- | |
44 | #define IIR_REG 2 /** Interrupt Ident Register (read). */ |
- | |
45 | #define FCR_REG 2 /** FIFO control register (write). */ |
- | |
46 | #define LCR_REG 3 /** Line Control register. */ |
- | |
47 | #define LSR_REG 5 /** Line Status Register. */ |
- | |
48 | - | ||
49 | #define IER_ERBFI 0x01 /** Enable Receive Buffer Full Interrupt. */ |
- | |
50 | - | ||
51 | #define LCR_DLAB 0x80 /** Divisor Latch Access bit. */ |
- | |
52 | - | ||
53 | /** Structure representing the ns16550 device. */ |
- | |
54 | typedef struct { |
- | |
55 | devno_t devno; |
- | |
56 | volatile uint8_t *reg; /** Memory mapped registers of the ns16550. */ |
- | |
57 | } ns16550_t; |
- | |
58 | - | ||
59 | static inline uint8_t ns16550_rbr_read(ns16550_t *dev) |
- | |
60 | { |
- | |
61 | return dev->reg[RBR_REG]; |
- | |
62 | } |
- | |
63 | - | ||
64 | static inline uint8_t ns16550_ier_read(ns16550_t *dev) |
- | |
65 | { |
- | |
66 | return dev->reg[IER_REG]; |
- | |
67 | } |
- | |
68 | - | ||
69 | static inline void ns16550_ier_write(ns16550_t *dev, uint8_t v) |
- | |
70 | { |
- | |
71 | dev->reg[IER_REG] = v; |
- | |
72 | } |
- | |
73 | - | ||
74 | static inline uint8_t ns16550_iir_read(ns16550_t *dev) |
- | |
75 | { |
- | |
76 | return dev->reg[IIR_REG]; |
- | |
77 | } |
- | |
78 | - | ||
79 | static inline void ns16550_fcr_write(ns16550_t *dev, uint8_t v) |
- | |
80 | { |
- | |
81 | dev->reg[FCR_REG] = v; |
- | |
82 | } |
- | |
83 | - | ||
84 | static inline uint8_t ns16550_lcr_read(ns16550_t *dev) |
- | |
85 | { |
- | |
86 | return dev->reg[LCR_REG]; |
- | |
87 | } |
- | |
88 | - | ||
89 | static inline void ns16550_lcr_write(ns16550_t *dev, uint8_t v) |
- | |
90 | { |
- | |
91 | dev->reg[LCR_REG] = v; |
- | |
92 | } |
- | |
93 | - | ||
94 | static inline uint8_t ns16550_lsr_read(ns16550_t *dev) |
- | |
95 | { |
- | |
96 | return dev->reg[LSR_REG]; |
- | |
97 | } |
- | |
98 | 38 | ||
99 | #endif |
39 | #endif |
100 | 40 | ||
101 | /** @} |
41 | /** @} |
102 | */ |
42 | */ |
103 | 43 |