| /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 */ |