/trunk/uspace/rd/rd.c |
---|
1,5 → 1,7 |
/* |
* Copyright (c) 2006 Martin Decky |
* Copyright (c) 2007 Michal Konopa |
* Copyright (c) 2007 Martin Jelen |
* Copyright (c) 2007 Peter Majer |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
45,7 → 47,17 |
#include <bool.h> |
#include <errno.h> |
#include <async.h> |
#include <stdlib.h> |
#include <unistd.h> |
#include <align.h> |
#include <async.h> |
#include <ddi.h> |
#include <libarch/ddi.h> |
#include <stdio.h> |
#include "rd.h" |
static void *rd_addr; |
static void *fs_addr; |
static void rd_connection(ipc_callid_t iid, ipc_call_t *icall) |
{ |
54,15 → 66,24 |
int retval; |
ipc_answer_fast(iid, 0, 0, 0); |
ipcarg_t offset; |
while (1) { |
callid = async_get_call(&call); |
switch (IPC_GET_METHOD(call)) { |
case IPC_M_PHONE_HUNGUP: |
ipc_answer_fast(callid, 0,0,0); |
return; |
default: |
retval = EINVAL; |
case IPC_M_PHONE_HUNGUP: |
ipc_answer_fast(callid, 0,0,0); |
return; |
case IPC_M_AS_AREA_SEND: |
ipc_answer_fast(callid, 0, (uintptr_t)fs_addr, 0); |
continue; |
case RD_READ_BLOCK: |
offset = IPC_GET_ARG1(call); |
memcpy((void *)fs_addr, rd_addr+offset, BLOCK_SIZE); |
retval = EOK; |
break; |
default: |
retval = EINVAL; |
} |
ipc_answer_fast(callid, retval, 0, 0); |
} |
71,6 → 92,8 |
static bool rd_init(void) |
{ |
int retval, flags; |
size_t rd_size = sysinfo_value("rd.size"); |
void * rd_ph_addr = (void *) sysinfo_value("rd.address.physical"); |
77,14 → 100,20 |
if (rd_size == 0) |
return false; |
void * rd_addr = as_get_mappable_page(rd_size); |
rd_addr = as_get_mappable_page(rd_size); |
physmem_map(rd_ph_addr, rd_addr, ALIGN_UP(rd_size, PAGE_SIZE) >> PAGE_WIDTH, AS_AREA_READ | AS_AREA_WRITE); |
flags = AS_AREA_READ | AS_AREA_WRITE | AS_AREA_CACHEABLE; |
retval = physmem_map(rd_ph_addr, rd_addr, ALIGN_UP(rd_size, PAGE_SIZE) >> PAGE_WIDTH, flags); |
if (retval < 0) |
return false; |
size_t fs_size = ALIGN_UP(BLOCK_SIZE * sizeof(char), PAGE_SIZE); |
fs_addr = as_get_mappable_page(fs_size); |
return true; |
} |
int main(int argc, char **argv) |
{ |
if (rd_init()) { |
/trunk/uspace/rd/rd.h |
---|
0,0 → 1,52 |
/* |
* Copyright (c) 2007 Michal Konopa |
* Copyright (c) 2007 Martin Jelen |
* Copyright (c) 2007 Peter Majer |
* 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 rd |
* @{ |
*/ |
/** |
* @file rd.h |
* @brief Initial RAM disk for HelenOS - header |
*/ |
/* Basic constants. */ |
#ifndef _RD_H |
#define _RD_H |
#define BLOCK_SIZE 1024 /**< Working block size */ |
#define RD_OFFSET 100 /**< IPC Message offset */ |
#define RD_BASE (FIRST_USER_METHOD + RD_OFFSET) /**< IPC Index of the first RD message */ |
#define RD_READ_BLOCK (RD_BASE + 1) /**< IPC Index of the RD_READ_BLOCK message */ |
#endif /* _RD_H */ |