Rev 1498 | Go to most recent revision | Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
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| 1493 | palkovsky | 1 | /* |
| 2 | * Copyright (C) 2006 Ondrej Palkovsky |
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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 | #include <align.h> |
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| 30 | #include <async.h> |
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| 31 | #include <ipc/ipc.h> |
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| 32 | #include <errno.h> |
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| 33 | #include <stdio.h> |
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| 34 | #include <ddi.h> |
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| 35 | #include <sysinfo.h> |
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| 36 | #include <as.h> |
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| 37 | #include <ipc/fb.h> |
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| 38 | #include <ipc/ipc.h> |
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| 39 | #include <ipc/ns.h> |
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| 40 | #include <ipc/services.h> |
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| 41 | |||
| 42 | #include "ega.h" |
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| 43 | |||
| 44 | /* Allow only 1 connection */ |
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| 45 | static int client_connected = 0; |
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| 46 | |||
| 47 | static unsigned int scr_width; |
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| 48 | static unsigned int scr_height; |
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| 49 | static char *scr_addr; |
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| 50 | |||
| 51 | static void clrscr(void) |
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| 52 | { |
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| 53 | int i; |
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| 54 | |||
| 55 | for (i=0; i < scr_width*scr_height; i++) |
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| 56 | scr_addr[i*2] = ' '; |
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| 57 | } |
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| 58 | |||
| 59 | static void printchar(char c, unsigned int row, unsigned int col) |
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| 60 | { |
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| 61 | scr_addr[(row*scr_width + col)*2] = c; |
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| 62 | } |
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| 63 | |||
| 64 | static void ega_client_connection(ipc_callid_t iid, ipc_call_t *icall) |
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| 65 | { |
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| 66 | int retval; |
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| 67 | ipc_callid_t callid; |
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| 68 | ipc_call_t call; |
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| 69 | char c; |
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| 70 | unsigned int row, col; |
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| 71 | |||
| 72 | if (client_connected) { |
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| 73 | ipc_answer_fast(iid, ELIMIT, 0,0); |
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| 74 | return; |
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| 75 | } |
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| 76 | client_connected = 1; |
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| 77 | ipc_answer_fast(iid, 0, 0, 0); /* Accept connection */ |
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| 78 | |||
| 79 | while (1) { |
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| 80 | callid = async_get_call(&call); |
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| 81 | switch (IPC_GET_METHOD(call)) { |
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| 82 | case IPC_M_PHONE_HUNGUP: |
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| 83 | client_connected = 0; |
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| 84 | ipc_answer_fast(callid,0,0,0); |
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| 85 | return; /* Exit thread */ |
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| 86 | case FB_GET_CSIZE: |
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| 87 | ipc_answer_fast(callid, 0, scr_width, scr_height); |
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| 88 | continue; |
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| 89 | case FB_CLEAR: |
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| 90 | clrscr(); |
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| 91 | retval = 0; |
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| 92 | break; |
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| 93 | case FB_PUTCHAR: |
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| 94 | c = IPC_GET_ARG1(call); |
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| 95 | row = IPC_GET_ARG2(call); |
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| 96 | col = IPC_GET_ARG3(call); |
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| 97 | if (row >= scr_width || col >= scr_height) { |
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| 98 | retval = EINVAL; |
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| 99 | break; |
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| 100 | } |
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| 101 | printchar(c,row,col); |
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| 102 | retval = 0; |
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| 103 | break; |
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| 104 | default: |
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| 105 | retval = ENOENT; |
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| 106 | } |
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| 107 | ipc_answer_fast(callid,retval,0,0); |
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| 108 | } |
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| 109 | } |
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| 110 | |||
| 111 | int ega_init(void) |
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| 112 | { |
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| 113 | void *ega_ph_addr; |
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| 114 | |||
| 115 | |||
| 116 | ega_ph_addr=(void *)sysinfo_value("fb.address.physical"); |
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| 117 | scr_width=sysinfo_value("fb.width"); |
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| 118 | scr_height=sysinfo_value("fb.height"); |
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| 119 | |||
| 120 | scr_addr=(void *)ALIGN_UP(((__address)set_maxheapsize(USER_ADDRESS_SPACE_SIZE_ARCH>>1)),PAGE_SIZE); |
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| 121 | |||
| 122 | if (ega_ph_addr != ALIGN_DOWN((unsigned long)ega_ph_addr, PAGE_SIZE)) |
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| 123 | return -1; |
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| 124 | |||
| 125 | map_physmem(ega_ph_addr, scr_addr, (scr_width*scr_height+PAGE_SIZE-1)>>PAGE_WIDTH, |
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| 126 | AS_AREA_READ | AS_AREA_WRITE); |
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| 127 | |||
| 128 | |||
| 129 | async_set_client_connection(ega_client_connection); |
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| 130 | |||
| 131 | clrscr(); |
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| 132 | |||
| 133 | return 0; |
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| 134 | } |