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| Rev | Author | Line No. | Line |
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| 3743 | rimsky | 1 | /* |
| 2 | * Copyright (c) 2008 Pavel Rimsky |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | /** @addtogroup sparc64 |
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| 30 | * @{ |
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| 31 | */ |
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| 32 | /** |
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| 33 | * @file |
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| 34 | * @brief Niagara input/output driver based on hypervisor calls. |
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| 35 | */ |
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| 36 | |||
| 37 | #include <arch/drivers/niagara.h> |
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| 38 | #include <console/chardev.h> |
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| 39 | #include <console/console.h> |
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| 40 | #include <arch/sun4v/hypercall.h> |
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| 41 | |||
| 42 | /* functions referenced from definitions of I/O operations structures */ |
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| 43 | static void niagara_putchar(chardev_t *, const char); |
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| 44 | |||
| 45 | /** character device operations */ |
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| 46 | static chardev_operations_t niagara_ops = { |
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| 47 | .write = niagara_putchar |
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| 48 | }; |
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| 49 | |||
| 50 | /** Niagara character device */ |
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| 51 | chardev_t niagara_io; |
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| 52 | |||
| 53 | /** Writes a single character to the standard output. */ |
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| 54 | static void niagara_putchar(struct chardev * cd, const char c) |
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| 55 | { |
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| 56 | __hypercall_fast1(CONS_PUTCHAR, c); |
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| 57 | if (c == '\n') |
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| 58 | __hypercall_fast1(CONS_PUTCHAR, '\r'); |
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| 59 | } |
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| 60 | |||
| 61 | |||
| 62 | /** |
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| 63 | * Grabs the input for kernel. |
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| 64 | */ |
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| 65 | void niagara_grab(void) |
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| 66 | { |
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| 67 | } |
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| 68 | |||
| 69 | /** |
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| 70 | * Releases the input so that userspace can use it. |
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| 71 | */ |
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| 72 | void niagara_release(void) |
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| 73 | { |
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| 74 | } |
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| 75 | |||
| 76 | /** |
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| 77 | * Initializes the input/output subsystem so that the Niagara standard |
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| 78 | * input/output is used. |
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| 79 | */ |
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| 80 | void niagara_init(void) |
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| 81 | { |
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| 82 | chardev_initialize("niagara_io", &niagara_io, &niagara_ops); |
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| 83 | stdin = &niagara_io; |
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| 84 | stdout = &niagara_io; |
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| 85 | } |
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| 86 | |||
| 87 | /** @} |
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| 88 | */ |