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 */
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 */
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/** @file
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/** @file
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 */
 36 
 */
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 37 
 
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#include <async.h>
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#include <async.h>
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#include <ipc/ipc.h>
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#include <ipc/fb.h>
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#include <sysinfo.h>
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#include <sysinfo.h>
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#include <as.h>
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#include <as.h>
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#include <errno.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdio.h>
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#include <ddi.h>
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#include <ddi.h>
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/**
 56 
/**
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 * SGCN buffer offset within SGCN.
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 * SGCN buffer offset within SGCN.
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 */
 58 
 */
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static uintptr_t sram_buffer_offset;
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static uintptr_t sram_buffer_offset;
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/* Allow only 1 connection */
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static int client_connected = 0;
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/**
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/**
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 * SGCN buffer header. It is placed at the very beginning of the SGCN
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 * SGCN buffer header. It is placed at the very beginning of the SGCN
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 * buffer.
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 * buffer.
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 */
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 */
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typedef struct {
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typedef struct {
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    *buf_ptr = c;
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    *buf_ptr = c;
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    *out_wrptr_ptr = new_wrptr;
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    *out_wrptr_ptr = new_wrptr;
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}
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}
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/**
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/**
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 * Main function of the thread serving client connections.
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 */
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static void sgcn_client_connection(ipc_callid_t iid, ipc_call_t *icall)
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{
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    int retval;
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    ipc_callid_t callid;
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    ipc_call_t call;
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    char c;
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    int lastcol = 0;
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    int lastrow = 0;
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    int newcol;
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    int newrow;
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    int fgcolor;
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    int bgcolor;
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    int i;
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    if (client_connected) {
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        ipc_answer_0(iid, ELIMIT);
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        return;
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    }
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    client_connected = 1;
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    ipc_answer_0(iid, EOK);
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    /* Clear the terminal, set scrolling region
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       to 0 - 24 lines */
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    serial_clrscr();
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    serial_goto(0, 0);
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    serial_puts("\033[0;24r");
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    while (true) {
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        callid = async_get_call(&call);
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        switch (IPC_GET_METHOD(call)) {
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        case IPC_M_PHONE_HUNGUP:
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            client_connected = 0;
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            ipc_answer_0(callid, EOK);
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            return;
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        case FB_PUTCHAR:
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            c = IPC_GET_ARG1(call);
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            newrow = IPC_GET_ARG2(call);
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            newcol = IPC_GET_ARG3(call);
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            if ((lastcol != newcol) || (lastrow != newrow))
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                serial_goto(newrow, newcol);
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            lastcol = newcol + 1;
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            lastrow = newrow;
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            sgcn_putc(c);
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            retval = 0;
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            break;
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        case FB_CURSOR_GOTO:
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            newrow = IPC_GET_ARG1(call);
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            newcol = IPC_GET_ARG2(call);
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            serial_goto(newrow, newcol);
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            lastrow = newrow;
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            lastcol = newcol;
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            retval = 0;
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180 
            break;
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        case FB_GET_CSIZE:
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            ipc_answer_2(callid, EOK, HEIGHT, WIDTH);
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183 
            continue;
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184 
        case FB_CLEAR:
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185 
            serial_clrscr();
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186 
            retval = 0;
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187 
            break;
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188 
        case FB_SET_STYLE:
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189 
            fgcolor = IPC_GET_ARG1(call);
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190 
            bgcolor = IPC_GET_ARG2(call);
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191 
            if (fgcolor < bgcolor)
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192 
                serial_set_style(0);
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193 
            else
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194 
                serial_set_style(7);
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195 
            retval = 0;
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196 
            break;
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197 
        case FB_SCROLL:
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            i = IPC_GET_ARG1(call);
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199 
            if ((i > HEIGHT) || (i < -HEIGHT)) {
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200 
                retval = EINVAL;
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201 
                break;
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202 
            }
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203 
            serial_scroll(i);
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204 
            serial_goto(lastrow, lastcol);
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205 
            retval = 0;
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206 
            break;
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207 
        case FB_CURSOR_VISIBILITY:
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208 
            if(IPC_GET_ARG1(call))
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209 
                serial_cursor_enable();
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210 
            else
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211 
                serial_cursor_disable();
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212 
            retval = 0;
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213 
            break;
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214 
        default:
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215 
            retval = ENOENT;
 - 
 
216 
        }
 - 
 
217 
        ipc_answer_0(callid, retval);
 - 
 
218 
    }
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219 
}
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220 
 
 - 
 
221 
/**
 - 
 
222 
 * Initializes the SGCN serial driver.
 120 
 * Initializes the SGCN serial driver.
223 
 */
 121 
 */
224 
int sgcn_init(void)
 122 
int sgcn_init(void)
225 
{
 123 
{
226 
    sram_virt_addr = (uintptr_t) as_get_mappable_page(
 124 
    sram_virt_addr = (uintptr_t) as_get_mappable_page(
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238 
   
 136 
   
239 
    serial_console_init(sgcn_putc, WIDTH, HEIGHT);
 137 
    serial_console_init(sgcn_putc, WIDTH, HEIGHT);
240 
   
 138 
   
241 
    sram_buffer_offset = sysinfo_value("sram.buffer.offset");
 139 
    sram_buffer_offset = sysinfo_value("sram.buffer.offset");
242 
   
 140 
   
243 
    async_set_client_connection(sgcn_client_connection);
 141 
    async_set_client_connection(serial_client_connection);
244 
    return 0;
 142 
    return 0;
245 
}
 143 
}
246 
 
 144 
 
247 
/**
 145 
/**
248 
 * @}
 146 
 * @}