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1 | /* |
1 | /* |
2 | * Copyright (c) 2001-2004 Jakub Jermar |
2 | * Copyright (c) 2001-2004 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 genarch |
29 | /** @addtogroup genarch |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** |
32 | /** |
33 | * @file |
33 | * @file |
34 | * @brief Headers for NS 16550 serial controller. |
34 | * @brief Headers for NS 16550 serial controller. |
35 | */ |
35 | */ |
36 | 36 | ||
37 | #ifndef KERN_NS16550_H_ |
37 | #ifndef KERN_NS16550_H_ |
38 | #define KERN_NS16550_H_ |
38 | #define KERN_NS16550_H_ |
39 | 39 | ||
40 | #include <ddi/irq.h> |
40 | #include <ddi/irq.h> |
41 | #include <arch/types.h> |
41 | #include <arch/types.h> |
42 | #include <console/chardev.h> |
42 | #include <console/chardev.h> |
43 | 43 | ||
44 | #define IER_ERBFI 0x01 /** Enable Receive Buffer Full Interrupt. */ |
44 | #define IER_ERBFI 0x01 /** Enable Receive Buffer Full Interrupt. */ |
45 | 45 | ||
46 | #define LCR_DLAB 0x80 /** Divisor Latch Access bit. */ |
46 | #define LCR_DLAB 0x80 /** Divisor Latch Access bit. */ |
47 | 47 | ||
48 | #define MCR_OUT2 0x08 /** OUT2. */ |
48 | #define MCR_OUT2 0x08 /** OUT2. */ |
49 | 49 | ||
50 | /** NS16550 registers. */ |
50 | /** NS16550 registers. */ |
51 | typedef struct { |
51 | typedef struct { |
52 | ioport8_t rbr; /**< Receiver Buffer Register. */ |
52 | ioport8_t rbr; /**< Receiver Buffer Register. */ |
53 | ioport8_t ier; /**< Interrupt Enable Register. */ |
53 | ioport8_t ier; /**< Interrupt Enable Register. */ |
54 | union { |
54 | union { |
55 | ioport8_t iir; /**< Interrupt Ident Register (read). */ |
55 | ioport8_t iir; /**< Interrupt Ident Register (read). */ |
56 | ioport8_t fcr; /**< FIFO control register (write). */ |
56 | ioport8_t fcr; /**< FIFO control register (write). */ |
57 | } __attribute__ ((packed)); |
57 | } __attribute__ ((packed)); |
58 | ioport8_t lcr; /**< Line Control register. */ |
58 | ioport8_t lcr; /**< Line Control register. */ |
59 | ioport8_t mcr; /**< Modem Control Register. */ |
59 | ioport8_t mcr; /**< Modem Control Register. */ |
60 | ioport8_t lsr; /**< Line Status Register. */ |
60 | ioport8_t lsr; /**< Line Status Register. */ |
61 | } __attribute__ ((packed)) ns16550_t; |
61 | } __attribute__ ((packed)) ns16550_t; |
62 | 62 | ||
63 | /** Structure representing the ns16550 device. */ |
63 | /** Structure representing the ns16550 device. */ |
64 | typedef struct { |
64 | typedef struct { |
65 | ns16550_t *ns16550; |
- | |
66 | irq_t irq; |
65 | irq_t irq; |
- | 66 | ns16550_t *ns16550; |
|
67 | indev_t kbrdin; |
67 | indev_t *kbrdin; |
68 | } ns16550_instance_t; |
68 | } ns16550_instance_t; |
69 | 69 | ||
70 | extern indev_t *ns16550_init(ns16550_t *, inr_t, cir_t, void *); |
70 | extern ns16550_instance_t *ns16550_init(ns16550_t *, inr_t, cir_t, void *); |
- | 71 | extern void ns16550_wire(ns16550_instance_t *, indev_t *); |
|
71 | 72 | ||
72 | #endif |
73 | #endif |
73 | 74 | ||
74 | /** @} |
75 | /** @} |
75 | */ |
76 | */ |
76 | 77 |