WebSVN – HelenOS – Diff – //branches/dynload/uspace/srv/console/console.c

 #include <libadt/fifo.h>
 #include <screenbuffer.h>
 #include <sys/mman.h>
 #include <stdio.h>
 #include <sysinfo.h>
+#include <event.h>
 #include "console.h"
 #include "gcons.h"
 #define MAX_KEYREQUESTS_BUFFERED 32
 /** Index of currently used virtual console.
  */
 int active_console = 0;
 int prev_console = 0;
-/** Information about framebuffer
+/** Information about framebuffer */
- */
 struct {
     int phone;      /**< Framebuffer phone */
     ipcarg_t rows;      /**< Framebuffer rows */
     ipcarg_t cols;      /**< Framebuffer columns */
 } fb_info;
 static keyfield_t *interbuffer = NULL;      /**< Pointer to memory shared
                          * with framebufer used for
                          * faster virtual console
                          * switching */
+/** Information on row-span yet unsent to FB driver. */
+struct {
+    int row;        /**< Row where the span lies. */
+    int col;        /**< Leftmost column of the span. */
+    int n;          /**< Width of the span. */
+} fb_pending;
+/** Size of cwrite_buf. */
+#define CWRITE_BUF_SIZE 256
+/** Buffer for receiving data via the CONSOLE_WRITE call from the client. */
+static char cwrite_buf[CWRITE_BUF_SIZE];
+static void fb_putchar(char c, int row, int col);
 /** Find unused virtual console.
+ *
  */
 static int find_free_connection(void)
         set_rgb_color(attrs->a.r.fg_color, attrs->a.r.bg_color);
         break;
+    }
+}
+/** Send an area of screenbuffer to the FB driver. */
-static void prtchr(char c, int row, int col)
+static void fb_update_area(connection_t *conn, int x, int y, int w, int h)
+{
+    int i, j;
+    int rc;
+    attrs_t *attrs;
+    keyfield_t *field;
+    if (interbuffer) {
+        for (j = 0; j < h; j++) {
+            for (i = 0; i < w; i++) {
+                interbuffer[i + j * w] =
+                    *get_field_at(&conn->screenbuffer,
+                    x + i, y + j);
+            }
+        }
-    async_msg_3(fb_info.phone, FB_PUTCHAR, c, row, col);
+        rc = async_req_4_0(fb_info.phone, FB_DRAW_TEXT_DATA,
+            x, y, w, h);
+    } else {
+        rc = ENOTSUP;
+    }
+    if (rc != 0) {
+        attrs = &conn->screenbuffer.attrs;
+        for (j = 0; j < h; j++) {
+            for (i = 0; i < w; i++) {
+                field = get_field_at(&conn->screenbuffer,
+                    x + i, y + j);
+                if (!attrs_same(*attrs, field->attrs))
+                    set_attrs(&field->attrs);
+                attrs = &field->attrs;
+                fb_putchar(field->character, y + j, x + i);
+            }
+        }
+    }
+}
-/** Check key and process special keys.
+/** Flush pending cells to FB. */
+static void fb_pending_flush(void)
+{
+    screenbuffer_t *scr;
+    scr = &(connections[active_console].screenbuffer);
+    if (fb_pending.n > 0) {
+        fb_update_area(&connections[active_console], fb_pending.col,
+            fb_pending.row, fb_pending.n, 1);
+        fb_pending.n = 0;
- *
+    }
+}
+/** Mark a character cell as changed.
+ *
+ * This adds the cell to the pending rowspan if possible. Otherwise
+ * the old span is flushed first.
  */
+static void cell_mark_changed(int row, int col)
+{
+    if (fb_pending.n != 0) {
+        if (row != fb_pending.row ||
+            col != fb_pending.col + fb_pending.n) {
+            fb_pending_flush();
+        }
+    }
+    if (fb_pending.n == 0) {
+        fb_pending.row = row;
+        fb_pending.col = col;
+    }
+    ++fb_pending.n;
+}
+/** Print a character to the active VC with buffering. */
+static void fb_putchar(char c, int row, int col)
+{
+    async_msg_3(fb_info.phone, FB_PUTCHAR, c, row, col);
+}
+/** Process a character from the client (TTY emulation). */
 static void write_char(int console, char key)
+{
+    bool flush_cursor = false;
     screenbuffer_t *scr = &(connections[console].screenbuffer);
     switch (key) {
     case '\n':
+        fb_pending_flush();
+        flush_cursor = true;
         scr->position_y++;
         scr->position_x = 0;
         break;
     case '\r':
         break;
     case '\b':
         if (scr->position_x == 0)
             break;
         scr->position_x--;
         if (console == active_console)
-            prtchr(' ', scr->position_y, scr->position_x);
+            cell_mark_changed(scr->position_y, scr->position_x);
         screenbuffer_putchar(scr, ' ');
         break;
     default:
         if (console == active_console)
-            prtchr(key, scr->position_y, scr->position_x);
+            cell_mark_changed(scr->position_y, scr->position_x);
         screenbuffer_putchar(scr, key);
         scr->position_x++;
+    }
-    scr->position_y += (scr->position_x >= scr->size_x);
+    if (scr->position_x >= scr->size_x) {
+        flush_cursor = true;
+        scr->position_y++;
+    }
     if (scr->position_y >= scr->size_y) {
+        fb_pending_flush();
         scr->position_y = scr->size_y - 1;
         screenbuffer_clear_line(scr, scr->top_line);
         scr->top_line = (scr->top_line + 1) % scr->size_y;
         if (console == active_console)
             async_msg_1(fb_info.phone, FB_SCROLL, 1);
+    }
     scr->position_x = scr->position_x % scr->size_x;
-    if (console == active_console)
+    if (console == active_console && flush_cursor)
         curs_goto(scr->position_y, scr->position_x);
+}
 /** Switch to new console */
 static void change_console(int newcons)
+{
     keyfield_t *field;
     attrs_t *attrs;
     if (newcons == active_console)
         return;
+    fb_pending_flush();
     if (newcons == KERNEL_CONSOLE) {
         async_serialize_start();
         curs_hide_sync();
         gcons_in_kernel();
         async_serialize_end();
         conn = &connections[active_console];
         set_attrs(&conn->screenbuffer.attrs);
         curs_visibility(false);
         if (interbuffer) {
-            for (i = 0; i < conn->screenbuffer.size_x; i++)
+            for (j = 0; j < conn->screenbuffer.size_y; j++) {
-                for (j = 0; j < conn->screenbuffer.size_y; j++) {
+                for (i = 0; i < conn->screenbuffer.size_x; i++) {
                     unsigned int size_x;
                     size_x = conn->screenbuffer.size_x;
-                    interbuffer[i + j * size_x] =
+                    interbuffer[j * size_x + i] =
                         *get_field_at(&conn->screenbuffer, i, j);
+                }
+            }
             /* This call can preempt, but we are already at the end */
-            rc = async_req_0_0(fb_info.phone, FB_DRAW_TEXT_DATA);
+            rc = async_req_4_0(fb_info.phone, FB_DRAW_TEXT_DATA,
+, 0, conn->screenbuffer.size_x,
+                conn->screenbuffer.size_y);
+        }
         if ((!interbuffer) || (rc != 0)) {
             set_attrs(&conn->screenbuffer.attrs);
             clrscr();
                     if ((field->character == ' ') &&
                         (attrs_same(field->attrs,
                         conn->screenbuffer.attrs)))
                         continue;
-                    prtchr(field->character, j, i);
+                    fb_putchar(field->character, j, i);
+                }
+        }
         curs_goto(conn->screenbuffer.position_y,
             conn->screenbuffer.position_x);
+        }
         ipc_answer_0(callid, retval);
+    }
+}
+/** Handle CONSOLE_WRITE call. */
+static void cons_write(int consnum, ipc_callid_t rid, ipc_call_t *request)
+{
+    ipc_callid_t callid;
+    size_t len;
+    size_t i;
+    if (!ipc_data_write_receive(&callid, &len)) {
+        ipc_answer_0(callid, EINVAL);
+        ipc_answer_0(rid, EINVAL);
+    }
+    if (len > CWRITE_BUF_SIZE)
+        len = CWRITE_BUF_SIZE;
+    (void) ipc_data_write_finalize(callid, cwrite_buf, len);
+    for (i = 0; i < len; i++) {
+        write_char(consnum, cwrite_buf[i]);
+    }
+    gcons_notify_char(consnum);
+    ipc_answer_1(rid, EOK, len);
+}
 /** Default thread for new connections */
 static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
+{
     ipc_callid_t callid;
     ipc_call_t call;
     int consnum;
     ipcarg_t arg1, arg2, arg3, arg4;
     connection_t *conn;
+    screenbuffer_t *scr;
     if ((consnum = find_free_connection()) == -1) {
         ipc_answer_0(iid, ELIMIT);
         return;
+    }
             return;
         case CONSOLE_PUTCHAR:
             write_char(consnum, IPC_GET_ARG1(call));
             gcons_notify_char(consnum);
             break;
+        case CONSOLE_WRITE:
+            cons_write(consnum, callid, &call);
+            continue;
         case CONSOLE_CLEAR:
             /* Send message to fb */
             if (consnum == active_console) {
                 async_msg_0(fb_info.phone, FB_CLEAR);
+            }
         case CONSOLE_GETSIZE:
             arg1 = fb_info.rows;
             arg2 = fb_info.cols;
             break;
         case CONSOLE_FLUSH:
+            fb_pending_flush();
-            if (consnum == active_console)
+            if (consnum == active_console) {
                 async_req_0_0(fb_info.phone, FB_FLUSH);
+                scr = &(connections[consnum].screenbuffer);
+                curs_goto(scr->position_y, scr->position_x);
+            }
             break;
         case CONSOLE_SET_STYLE:
+            fb_pending_flush();
             arg1 = IPC_GET_ARG1(call);
             screenbuffer_set_style(&conn->screenbuffer, arg1);
             if (consnum == active_console)
                 set_style(arg1);
             break;
         case CONSOLE_SET_COLOR:
+            fb_pending_flush();
             arg1 = IPC_GET_ARG1(call);
             arg2 = IPC_GET_ARG2(call);
             arg3 = IPC_GET_ARG3(call);
             screenbuffer_set_color(&conn->screenbuffer, arg1,
                 arg2, arg3);
             if (consnum == active_console)
                 set_color(arg1, arg2, arg3);
             break;
         case CONSOLE_SET_RGB_COLOR:
+            fb_pending_flush();
             arg1 = IPC_GET_ARG1(call);
             arg2 = IPC_GET_ARG2(call);
             screenbuffer_set_rgb_color(&conn->screenbuffer, arg1,
                 arg2);
             if (consnum == active_console)
                 set_rgb_color(arg1, arg2);
             break;
         case CONSOLE_CURSOR_VISIBILITY:
+            fb_pending_flush();
             arg1 = IPC_GET_ARG1(call);
             conn->screenbuffer.is_cursor_visible = arg1;
             if (consnum == active_console)
                 curs_visibility(arg1);
             break;
             arg1 = ev.type;
             arg2 = ev.key;
             arg3 = ev.mods;
             arg4 = ev.c;
             break;
+        case CONSOLE_KCON_ENABLE:
+            change_console(KERNEL_CONSOLE);
+            break;
+        }
         ipc_answer_4(callid, EOK, arg1, arg2, arg3, arg4);
+    }
+}
     /* Set up shared memory buffer. */
     ib_size = sizeof(keyfield_t) * fb_info.cols * fb_info.rows;
     interbuffer = as_get_mappable_page(ib_size);
+    fb_pending.n = 0;
     if (as_area_create(interbuffer, ib_size, AS_AREA_READ |
         AS_AREA_WRITE | AS_AREA_CACHEABLE) != interbuffer) {
         interbuffer = NULL;
+    }
     /* Register at NS */
     if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, 0, &phonehash) != 0)
         return -1;
     /* Receive kernel notifications */
-    if (sysinfo_value("kconsole.present")) {
-        int devno = sysinfo_value("kconsole.devno");
-        int inr = sysinfo_value("kconsole.inr");
-        if (ipc_register_irq(inr, devno, 0, NULL) != EOK)
+    if (event_subscribe(EVENT_KCONSOLE, 0) != EOK)
-            printf(NAME ": Error registering kconsole notifications\n");
+        printf(NAME ": Error registering kconsole notifications\n");
-        async_set_interrupt_received(interrupt_received);
+    async_set_interrupt_received(interrupt_received);
-    }
     // FIXME: avoid connectiong to itself, keep using klog
     // printf(NAME ": Accepting connections\n");
     async_manager();

Subversion Repositories HelenOS

(root)//branches/dynload/uspace/srv/console/console.c – Rev 4345 → 4347