0,0 → 1,88 |
/* |
* Copyright (c) 2008 Pavel Rimsky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
|
/** @addtogroup sparc64 |
* @{ |
*/ |
/** |
* @file |
* @brief Niagara input/output driver based on hypervisor calls. |
*/ |
|
#include <arch/drivers/niagara.h> |
#include <console/chardev.h> |
#include <console/console.h> |
#include <arch/sun4v/hypercall.h> |
|
/* functions referenced from definitions of I/O operations structures */ |
static void niagara_putchar(chardev_t *, const char); |
|
/** character device operations */ |
static chardev_operations_t niagara_ops = { |
.write = niagara_putchar |
}; |
|
/** Niagara character device */ |
chardev_t niagara_io; |
|
/** Writes a single character to the standard output. */ |
static void niagara_putchar(struct chardev * cd, const char c) |
{ |
__hypercall_fast1(CONS_PUTCHAR, c); |
if (c == '\n') |
__hypercall_fast1(CONS_PUTCHAR, '\r'); |
} |
|
|
/** |
* Grabs the input for kernel. |
*/ |
void niagara_grab(void) |
{ |
} |
|
/** |
* Releases the input so that userspace can use it. |
*/ |
void niagara_release(void) |
{ |
} |
|
/** |
* Initializes the input/output subsystem so that the Niagara standard |
* input/output is used. |
*/ |
void niagara_init(void) |
{ |
chardev_initialize("niagara_io", &niagara_io, &niagara_ops); |
stdin = &niagara_io; |
stdout = &niagara_io; |
} |
|
/** @} |
*/ |