Add a 7 segments + led display, by Herve Poussineau.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3015 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 303 insertions, 0 deletions

diff --git a/hw/jazz_led.c b/hw/jazz_led.c
new file mode 100644
index 0000000000..6f741735ed
--- /dev/null
+++ b/hw/jazz_led.c
@@ -0,0 +1,303 @@
+/*
+ * QEMU JAZZ LED emulator.
+ * 
+ * Copyright (c) 2007 Hervé Poussineau
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "vl.h"
+#include "pixel_ops.h"
+
+//#define DEBUG_LED
+
+typedef enum {
+    REDRAW_NONE = 0, REDRAW_SEGMENTS = 1, REDRAW_BACKGROUND = 2,
+} screen_state_t;
+
+typedef struct LedState {
+    target_phys_addr_t base;
+    uint8_t segments;
+    DisplayState *ds;
+    screen_state_t state;
+} LedState;
+
+static uint32_t led_readb(void *opaque, target_phys_addr_t addr)
+{
+    LedState *s = opaque;
+    int relative_addr = addr - s->base;
+    uint32_t val;
+
+    switch (relative_addr) {
+        case 0:
+            val = s->segments;
+            break;
+        default:
+#ifdef DEBUG_LED
+            printf("jazz led: invalid read [0x%x]\n", relative_addr);
+#endif
+            val = 0;
+    }
+
+    return val;
+}
+
+static uint32_t led_readw(void *opaque, target_phys_addr_t addr)
+{
+    uint32_t v;
+#ifdef TARGET_WORDS_BIGENDIAN
+    v = led_readb(opaque, addr) << 8;
+    v |= led_readb(opaque, addr + 1);
+#else
+    v = led_readb(opaque, addr);
+    v |= led_readb(opaque, addr + 1) << 8;
+#endif
+    return v;
+}
+
+static uint32_t led_readl(void *opaque, target_phys_addr_t addr)
+{
+    uint32_t v;
+#ifdef TARGET_WORDS_BIGENDIAN
+    v = led_readb(opaque, addr) << 24;
+    v |= led_readb(opaque, addr + 1) << 16;
+    v |= led_readb(opaque, addr + 2) << 8;
+    v |= led_readb(opaque, addr + 3);
+#else
+    v = led_readb(opaque, addr);
+    v |= led_readb(opaque, addr + 1) << 8;
+    v |= led_readb(opaque, addr + 2) << 16;
+    v |= led_readb(opaque, addr + 3) << 24;
+#endif
+    return v;
+}
+
+static void led_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
+{
+    LedState *s = opaque;
+    int relative_addr = addr - s->base;
+
+    switch (relative_addr) {
+        case 0:
+            s->segments = val;
+            s->state |= REDRAW_SEGMENTS;
+            break;
+        default:
+#ifdef DEBUG_LED
+            printf("jazz led: invalid write of 0x%02x at [0x%x]\n", val, relative_addr);
+#endif
+            break;
+    }
+}
+
+static void led_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
+{
+#ifdef TARGET_WORDS_BIGENDIAN
+    led_writeb(opaque, addr, (val >> 8) & 0xff);
+    led_writeb(opaque, addr + 1, val & 0xff);
+#else
+    led_writeb(opaque, addr, val & 0xff);
+    led_writeb(opaque, addr + 1, (val >> 8) & 0xff);
+#endif
+}
+
+static void led_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
+{
+#ifdef TARGET_WORDS_BIGENDIAN
+    led_writeb(opaque, addr, (val >> 24) & 0xff);
+    led_writeb(opaque, addr + 1, (val >> 16) & 0xff);
+    led_writeb(opaque, addr + 2, (val >> 8) & 0xff);
+    led_writeb(opaque, addr + 3, val & 0xff);
+#else
+    led_writeb(opaque, addr, val & 0xff);
+    led_writeb(opaque, addr + 1, (val >> 8) & 0xff);
+    led_writeb(opaque, addr + 2, (val >> 16) & 0xff);
+    led_writeb(opaque, addr + 3, (val >> 24) & 0xff);
+#endif
+}
+
+static CPUReadMemoryFunc *led_read[3] = {
+    led_readb,
+    led_readw,
+    led_readl,
+};
+
+static CPUWriteMemoryFunc *led_write[3] = {
+    led_writeb,
+    led_writew,
+    led_writel,
+};
+
+/***********************************************************/
+/* jazz_led display */
+
+static void draw_horizontal_line(DisplayState *ds, int posy, int posx1, int posx2, uint32_t color)
+{
+    uint8_t *d;
+    int x, bpp;
+
+    bpp = (ds->depth + 7) >> 3;
+    d = ds->data + ds->linesize * posy + bpp * posx1;
+    switch(bpp) {
+        case 1:
+            for (x = posx1; x <= posx2; x++) {
+                *((uint8_t *)d) = color;
+                d++;
+            }
+            break;
+        case 2:
+            for (x = posx1; x <= posx2; x++) {
+                *((uint16_t *)d) = color;
+                d += 2;
+            }
+            break;
+        case 4:
+            for (x = posx1; x <= posx2; x++) {
+                *((uint32_t *)d) = color;
+                d += 4;
+            }
+            break;
+    }
+}
+
+static void draw_vertical_line(DisplayState *ds, int posx, int posy1, int posy2, uint32_t color)
+{
+    uint8_t *d;
+    int y, bpp;
+
+    bpp = (ds->depth + 7) >> 3;
+    d = ds->data + ds->linesize * posy1 + bpp * posx;
+    switch(bpp) {
+        case 1:
+            for (y = posy1; y <= posy2; y++) {
+                *((uint8_t *)d) = color;
+                d += ds->linesize;
+            }
+            break;
+        case 2:
+            for (y = posy1; y <= posy2; y++) {
+                *((uint16_t *)d) = color;
+                d += ds->linesize;
+            }
+            break;
+        case 4:
+            for (y = posy1; y <= posy2; y++) {
+                *((uint32_t *)d) = color;
+                d += ds->linesize;
+            }
+            break;
+    }
+}
+
+static void jazz_led_update_display(void *opaque)
+{
+    LedState *s = opaque;
+    DisplayState *ds = s->ds;
+    uint8_t *d1;
+    uint32_t color_segment, color_led;
+    int y, bpp;
+
+    if (s->state & REDRAW_BACKGROUND) {
+        /* clear screen */
+        bpp = (ds->depth + 7) >> 3;
+        d1 = ds->data;
+        for (y = 0; y < ds->height; y++) {
+            memset(d1, 0x00, ds->width * bpp);
+            d1 += ds->linesize;
+        }
+    }
+
+    if (s->state & REDRAW_SEGMENTS) {
+        /* set colors according to bpp */
+        switch (ds->depth) {
+            case 8:
+                color_segment = rgb_to_pixel8(0xaa, 0xaa, 0xaa);
+                color_led = rgb_to_pixel8(0x00, 0xff, 0x00);
+                break;
+            case 15:
+                color_segment = rgb_to_pixel15(0xaa, 0xaa, 0xaa);
+                color_led = rgb_to_pixel15(0x00, 0xff, 0x00);
+                break;
+            case 16:
+                color_segment = rgb_to_pixel16(0xaa, 0xaa, 0xaa);
+                color_led = rgb_to_pixel16(0x00, 0xff, 0x00);
+            case 24:
+                color_segment = rgb_to_pixel24(0xaa, 0xaa, 0xaa);
+                color_led = rgb_to_pixel24(0x00, 0xff, 0x00);
+                break;
+            case 32:
+                color_segment = rgb_to_pixel32(0xaa, 0xaa, 0xaa);
+                color_led = rgb_to_pixel32(0x00, 0xff, 0x00);
+                break;
+            default:
+                return;
+        }
+
+        /* display segments */
+        draw_horizontal_line(ds, 40, 10, 40, (s->segments & 0x02) ? color_segment : 0);
+        draw_vertical_line(ds, 10, 10, 40, (s->segments & 0x04) ? color_segment : 0);
+        draw_vertical_line(ds, 10, 40, 70, (s->segments & 0x08) ? color_segment : 0);
+        draw_horizontal_line(ds, 70, 10, 40, (s->segments & 0x10) ? color_segment : 0);
+        draw_vertical_line(ds, 40, 40, 70, (s->segments & 0x20) ? color_segment : 0);
+        draw_vertical_line(ds, 40, 10, 40, (s->segments & 0x40) ? color_segment : 0);
+        draw_horizontal_line(ds, 10, 10, 40, (s->segments & 0x80) ? color_segment : 0);
+
+        /* display led */
+        if (!(s->segments & 0x01))
+            color_led = 0; /* black */
+        draw_horizontal_line(ds, 68, 50, 50, color_led);
+        draw_horizontal_line(ds, 69, 49, 51, color_led);
+        draw_horizontal_line(ds, 70, 48, 52, color_led);
+        draw_horizontal_line(ds, 71, 49, 51, color_led);
+        draw_horizontal_line(ds, 72, 50, 50, color_led);
+    }
+
+    s->state = REDRAW_NONE;
+    dpy_update(ds, 0, 0, ds->width, ds->height);
+}
+
+static void jazz_led_invalidate_display(void *opaque)
+{
+    LedState *s = opaque;
+    s->state |= REDRAW_SEGMENTS | REDRAW_BACKGROUND;
+}
+
+static void jazz_led_screen_dump(void *opaque, const char *filename)
+{
+    printf("jazz_led_screen_dump() not implemented\n");
+}
+
+void jazz_led_init(DisplayState *ds, target_phys_addr_t base)
+{
+    LedState *s;
+    int io;
+
+    s = qemu_mallocz(sizeof(LedState));
+    if (!s)
+        return;
+
+    s->base = base;
+    s->ds = ds;
+    s->state = REDRAW_SEGMENTS | REDRAW_BACKGROUND;
+
+    io = cpu_register_io_memory(0, led_read, led_write, s);
+    cpu_register_physical_memory(s->base, 1, io);
+
+    graphic_console_init(ds, jazz_led_update_display, jazz_led_invalidate_display, jazz_led_screen_dump, s);
+}