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1 | /* |
1 | /* |
2 | * Copyright (c) 2008 Pavel Rimsky |
2 | * Copyright (c) 2008 Pavel Rimsky |
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 | /** |
32 | /** |
33 | * @file |
33 | * @file |
34 | * @brief Niagara input/output driver based on hypervisor calls. |
34 | * @brief Niagara input/output driver based on hypervisor calls. |
35 | */ |
35 | */ |
36 | 36 | ||
37 | #include <arch/drivers/niagara.h> |
37 | #include <arch/drivers/niagara.h> |
38 | #include <console/chardev.h> |
38 | #include <console/chardev.h> |
39 | #include <console/console.h> |
39 | #include <console/console.h> |
- | 40 | #include <arch/drivers/kbd.h> |
|
40 | #include <arch/sun4v/hypercall.h> |
41 | #include <arch/sun4v/hypercall.h> |
41 | 42 | ||
42 | /* functions referenced from definitions of I/O operations structures */ |
43 | /* functions referenced from definitions of I/O operations structures */ |
43 | static void niagara_putchar(chardev_t *, const char); |
44 | static void niagara_putchar(chardev_t *, const char); |
- | 45 | static void niagara_noop(chardev_t *); |
|
- | 46 | static char niagara_read(chardev_t *); |
|
44 | 47 | ||
45 | /** character device operations */ |
48 | /** character device operations */ |
46 | static chardev_operations_t niagara_ops = { |
49 | static chardev_operations_t niagara_ops = { |
47 | .write = niagara_putchar |
50 | .write = niagara_putchar, |
- | 51 | .suspend = niagara_noop, |
|
- | 52 | .resume = niagara_noop, |
|
- | 53 | .read = niagara_read |
|
48 | }; |
54 | }; |
49 | 55 | ||
50 | /** Niagara character device */ |
56 | /** Niagara character device */ |
51 | chardev_t niagara_io; |
57 | chardev_t niagara_io; |
52 | 58 | ||
- | 59 | /** defined in drivers/kbd.c */ |
|
- | 60 | extern kbd_type_t kbd_type; |
|
- | 61 | ||
53 | /** Writes a single character to the standard output. */ |
62 | /** Writes a single character to the standard output. */ |
54 | static void niagara_putchar(struct chardev * cd, const char c) |
63 | static void niagara_putchar(struct chardev * cd, const char c) |
55 | { |
64 | { |
56 | __hypercall_fast1(CONS_PUTCHAR, c); |
65 | __hypercall_fast1(CONS_PUTCHAR, c); |
57 | if (c == '\n') |
66 | if (c == '\n') |
58 | __hypercall_fast1(CONS_PUTCHAR, '\r'); |
67 | __hypercall_fast1(CONS_PUTCHAR, '\r'); |
59 | } |
68 | } |
60 | 69 | ||
61 | - | ||
62 | /** |
70 | /** |
63 | * Grabs the input for kernel. |
71 | * Grabs the input for kernel. |
64 | */ |
72 | */ |
65 | void niagara_grab(void) |
73 | void niagara_grab(void) |
66 | { |
74 | { |
67 | } |
75 | } |
68 | 76 | ||
69 | /** |
77 | /** |
70 | * Releases the input so that userspace can use it. |
78 | * Releases the input so that userspace can use it. |
71 | */ |
79 | */ |
72 | void niagara_release(void) |
80 | void niagara_release(void) |
73 | { |
81 | { |
74 | } |
82 | } |
75 | 83 | ||
76 | /** |
84 | /** |
- | 85 | * Default suspend/resume operation for the input device. |
|
- | 86 | */ |
|
- | 87 | static void niagara_noop(chardev_t *d) |
|
- | 88 | { |
|
- | 89 | } |
|
- | 90 | ||
- | 91 | /** |
|
- | 92 | * Called when actively reading the character. Not implemented yet. |
|
- | 93 | */ |
|
- | 94 | static char niagara_read(chardev_t *d) |
|
- | 95 | { |
|
- | 96 | return (char) 0; |
|
- | 97 | } |
|
- | 98 | ||
- | 99 | /** |
|
- | 100 | * Function regularly called by the keyboard polling thread. Asks the |
|
- | 101 | * hypervisor whether there is any unread character. If so, it picks it up |
|
- | 102 | * and sends it to the upper layers of HelenOS. |
|
- | 103 | */ |
|
- | 104 | void niagara_poll(void) |
|
- | 105 | { |
|
- | 106 | uint64_t c = 50; |
|
- | 107 | ||
- | 108 | if (__hypercall_fast_ret1(0, 0, 0, 0, 0, CONS_GETCHAR, &c) == EOK) { |
|
- | 109 | chardev_push_character(&niagara_io, c); |
|
- | 110 | if (c == '\r') |
|
- | 111 | chardev_push_character(&niagara_io, '\n'); |
|
- | 112 | } |
|
- | 113 | ||
- | 114 | } |
|
- | 115 | ||
- | 116 | /** |
|
77 | * Initializes the input/output subsystem so that the Niagara standard |
117 | * Initializes the input/output subsystem so that the Niagara standard |
78 | * input/output is used. |
118 | * input/output is used. |
79 | */ |
119 | */ |
80 | void niagara_init(void) |
120 | void niagara_init(void) |
81 | { |
121 | { |
- | 122 | kbd_type = KBD_SUN4V; |
|
- | 123 | ||
82 | chardev_initialize("niagara_io", &niagara_io, &niagara_ops); |
124 | chardev_initialize("niagara_io", &niagara_io, &niagara_ops); |
83 | stdin = &niagara_io; |
125 | stdin = &niagara_io; |
84 | stdout = &niagara_io; |
126 | stdout = &niagara_io; |
85 | } |
127 | } |
86 | 128 | ||
87 | /** @} |
129 | /** @} |
88 | */ |
130 | */ |
89 | 131 |