Rev 3817 | Go to most recent revision | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 3817 | Rev 3863 | ||
---|---|---|---|
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/drivers/kbd.h> |
41 | #include <arch/sun4v/hypercall.h> |
41 | #include <arch/sun4v/hypercall.h> |
42 | 42 | ||
43 | /* functions referenced from definitions of I/O operations structures */ |
43 | /* functions referenced from definitions of I/O operations structures */ |
44 | static void niagara_putchar(chardev_t *, const char); |
44 | static void niagara_putchar(chardev_t *, const char); |
45 | static void niagara_noop(chardev_t *); |
45 | static void niagara_noop(chardev_t *); |
46 | static char niagara_read(chardev_t *); |
46 | static char niagara_read(chardev_t *); |
47 | 47 | ||
48 | /** character device operations */ |
48 | /** character device operations */ |
49 | static chardev_operations_t niagara_ops = { |
49 | static chardev_operations_t niagara_ops = { |
50 | .write = niagara_putchar, |
50 | .write = niagara_putchar, |
51 | .suspend = niagara_noop, |
51 | .suspend = niagara_noop, |
52 | .resume = niagara_noop, |
52 | .resume = niagara_noop, |
53 | .read = niagara_read |
53 | .read = niagara_read |
54 | }; |
54 | }; |
55 | 55 | ||
56 | /** Niagara character device */ |
56 | /** Niagara character device */ |
57 | chardev_t niagara_io; |
57 | chardev_t niagara_io; |
58 | 58 | ||
59 | /** defined in drivers/kbd.c */ |
59 | /** defined in drivers/kbd.c */ |
60 | extern kbd_type_t kbd_type; |
60 | extern kbd_type_t kbd_type; |
61 | 61 | ||
62 | /** Writes a single character to the standard output. */ |
62 | /** Writes a single character to the standard output. */ |
- | 63 | static inline void do_putchar(const char c) { |
|
- | 64 | /* repeat until the buffer is non-full */ |
|
- | 65 | while (__hypercall_fast1(CONS_PUTCHAR, c) == EWOULDBLOCK) |
|
- | 66 | ; |
|
- | 67 | } |
|
- | 68 | ||
- | 69 | /** Writes a single character to the standard output. */ |
|
63 | static void niagara_putchar(struct chardev * cd, const char c) |
70 | static void niagara_putchar(struct chardev * cd, const char c) |
64 | { |
71 | { |
65 | __hypercall_fast1(CONS_PUTCHAR, c); |
72 | do_putchar(c); |
66 | if (c == '\n') |
73 | if (c == '\n') |
67 | __hypercall_fast1(CONS_PUTCHAR, '\r'); |
74 | do_putchar('\r'); |
68 | } |
75 | } |
69 | 76 | ||
70 | /** |
77 | /** |
71 | * Grabs the input for kernel. |
78 | * Grabs the input for kernel. |
72 | */ |
79 | */ |
73 | void niagara_grab(void) |
80 | void niagara_grab(void) |
74 | { |
81 | { |
75 | } |
82 | } |
76 | 83 | ||
77 | /** |
84 | /** |
78 | * Releases the input so that userspace can use it. |
85 | * Releases the input so that userspace can use it. |
79 | */ |
86 | */ |
80 | void niagara_release(void) |
87 | void niagara_release(void) |
81 | { |
88 | { |
82 | } |
89 | } |
83 | 90 | ||
84 | /** |
91 | /** |
85 | * Default suspend/resume operation for the input device. |
92 | * Default suspend/resume operation for the input device. |
86 | */ |
93 | */ |
87 | static void niagara_noop(chardev_t *d) |
94 | static void niagara_noop(chardev_t *d) |
88 | { |
95 | { |
89 | } |
96 | } |
90 | 97 | ||
91 | /** |
98 | /** |
92 | * Called when actively reading the character. Not implemented yet. |
99 | * Called when actively reading the character. Not implemented yet. |
93 | */ |
100 | */ |
94 | static char niagara_read(chardev_t *d) |
101 | static char niagara_read(chardev_t *d) |
95 | { |
102 | { |
96 | return (char) 0; |
103 | return (char) 0; |
97 | } |
104 | } |
98 | 105 | ||
99 | /** |
106 | /** |
100 | * Function regularly called by the keyboard polling thread. Asks the |
107 | * Function regularly called by the keyboard polling thread. Asks the |
101 | * hypervisor whether there is any unread character. If so, it picks it up |
108 | * hypervisor whether there is any unread character. If so, it picks it up |
102 | * and sends it to the upper layers of HelenOS. |
109 | * and sends it to the upper layers of HelenOS. |
103 | */ |
110 | */ |
104 | void niagara_poll(void) |
111 | void niagara_poll(void) |
105 | { |
112 | { |
106 | uint64_t c = 50; |
113 | uint64_t c = 50; |
107 | 114 | ||
108 | if (__hypercall_fast_ret1(0, 0, 0, 0, 0, CONS_GETCHAR, &c) == EOK) { |
115 | if (__hypercall_fast_ret1(0, 0, 0, 0, 0, CONS_GETCHAR, &c) == EOK) { |
109 | chardev_push_character(&niagara_io, c); |
116 | chardev_push_character(&niagara_io, c); |
110 | if (c == '\r') |
117 | if (c == '\r') |
111 | chardev_push_character(&niagara_io, '\n'); |
118 | chardev_push_character(&niagara_io, '\n'); |
112 | } |
119 | } |
113 | 120 | ||
114 | } |
121 | } |
115 | 122 | ||
116 | /** |
123 | /** |
117 | * Initializes the input/output subsystem so that the Niagara standard |
124 | * Initializes the input/output subsystem so that the Niagara standard |
118 | * input/output is used. |
125 | * input/output is used. |
119 | */ |
126 | */ |
120 | void niagara_init(void) |
127 | void niagara_init(void) |
121 | { |
128 | { |
122 | kbd_type = KBD_SUN4V; |
129 | kbd_type = KBD_SUN4V; |
123 | 130 | ||
124 | chardev_initialize("niagara_io", &niagara_io, &niagara_ops); |
131 | chardev_initialize("niagara_io", &niagara_io, &niagara_ops); |
125 | stdin = &niagara_io; |
132 | stdin = &niagara_io; |
126 | stdout = &niagara_io; |
133 | stdout = &niagara_io; |
127 | } |
134 | } |
128 | 135 | ||
129 | /** @} |
136 | /** @} |
130 | */ |
137 | */ |
131 | 138 |