[Qemu-devel] [PATCH] tc6393xb: non-accelerated FB support

[Dmitry Baryshkov <dbaryshkov@gmail.com>]

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Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
---
 hw/devices.h           |    2 +-
 hw/tc6393xb.c          |  132 +++++++++++++++++++++++++++++++++++++++++++++++-
 hw/tc6393xb_template.h |   52 +++++++++++++++++++
 hw/tosa.c              |    4 +-
 4 files changed, 187 insertions(+), 3 deletions(-)
 create mode 100644 hw/tc6393xb_template.h

diff --git a/hw/devices.h b/hw/devices.h
index 45fead9..e8fed68 100644
--- a/hw/devices.h
+++ b/hw/devices.h
@@ -66,7 +66,7 @@ void tusb6010_power(struct tusb_s *s, int on);
 
 /* tc6393xb.c */
 struct tc6393xb_s;
-struct tc6393xb_s *tc6393xb_init(uint32_t base, qemu_irq irq);
+struct tc6393xb_s *tc6393xb_init(uint32_t base, qemu_irq irq, DisplayState *ds);
 void tc6393xb_gpio_out_set(struct tc6393xb_s *s, int line,
                     qemu_irq handler);
 qemu_irq *tc6393xb_gpio_in_get(struct tc6393xb_s *s);
diff --git a/hw/tc6393xb.c b/hw/tc6393xb.c
index 919a922..e3897ff 100644
--- a/hw/tc6393xb.c
+++ b/hw/tc6393xb.c
@@ -11,6 +11,8 @@
 #include "pxa.h"
 #include "devices.h"
 #include "flash.h"
+#include "console.h"
+#include "pixel_ops.h"
 
 #define	IRQ_TC6393_NAND		0
 #define	IRQ_TC6393_MMC		1
@@ -119,6 +121,11 @@ struct tc6393xb_s {
     uint32_t nand_phys;
     struct nand_flash_s *flash;
     struct ecc_state_s ecc;
+
+    DisplayState *ds;
+    QEMUConsole *console;
+    uint8_t *vram;
+    uint32_t scr_width, scr_height; /* in pixels */
 };
 
 qemu_irq *tc6393xb_gpio_in_get(struct tc6393xb_s *s)
@@ -395,6 +402,111 @@ static void tc6393xb_nand_writeb(struct tc6393xb_s *s, target_phys_addr_t addr,
 					(uint32_t) addr, value & 0xff);
 }
 
+#define BITS 8
+#define PIXEL_WIDTH 8
+#include "tc6393xb_template.h"
+#define BITS 15
+#define PIXEL_WIDTH 16
+#include "tc6393xb_template.h"
+#define BITS 16
+#define PIXEL_WIDTH 16
+#include "tc6393xb_template.h"
+#define BITS 24
+#define PIXEL_WIDTH 32
+#include "tc6393xb_template.h"
+#define BITS 32
+#define PIXEL_WIDTH 32
+#include "tc6393xb_template.h"
+
+static void tc6393xb_draw_graphic(struct tc6393xb_s *s)
+{
+    switch (s->ds->depth) {
+        case 8:
+            tc6393xb_draw_graphic8(s);
+            break;
+        case 15:
+            tc6393xb_draw_graphic15(s);
+            break;
+        case 16:
+            tc6393xb_draw_graphic16(s);
+            break;
+        case 24:
+            tc6393xb_draw_graphic24(s);
+            break;
+        case 32:
+            tc6393xb_draw_graphic32(s);
+            break;
+        default:
+            printf("tc6393xb: unknown depth %d\n", s->ds->depth);
+            return;
+    }
+
+    dpy_update(s->ds, 0, 0, s->scr_width, s->scr_height);
+}
+
+#if 0
+static void tc6393xb_draw_blank(struct tc6393xb_s *s, int full_update)
+{
+    int i, w;
+    uint8_t *d;
+
+    if (!full_update)
+        return;
+
+    w = s->scr_width * ((s->ds->depth + 7) >> 3);
+    d = s->ds->data;
+    for(i = 0; i < s->scr_height; i++) {
+        memset(d, 0, w);
+        d += s->ds->linesize;
+    }
+
+    dpy_update(s->ds, 0, 0, s->scr_width, s->scr_height);
+}
+#endif
+
+static void tc6393xb_update_display(void *opaque)
+{
+    struct tc6393xb_s *s = opaque;
+#if 0
+    int full_update, graphic_mode;
+#endif
+
+    if (s->scr_width == 0 || s->scr_height == 0)
+        return;
+
+#if 0
+    if (s->ctla & CTLA_FORCE_BLANK)
+        graphic_mode = GMODE_BLANK;
+    else
+        graphic_mode = GMODE_GRAPH;
+    full_update = 0;
+    if (graphic_mode != s->graphic_mode) {
+        s->graphic_mode = graphic_mode;
+        full_update = 1;
+    }
+#endif
+    if (s->scr_width != s->ds->width || s->scr_height != s->ds->height) {
+        qemu_console_resize(s->console, s->scr_width, s->scr_height);
+#if 0
+        full_update = 1;
+#endif
+    }
+#if 0
+    switch(graphic_mode) {
+        case GMODE_GRAPH:
+            tc6393xb_draw_graphic(s, full_update);
+            break;
+        case GMODE_BLANK:
+        default:
+            tc6393xb_draw_blank(s, full_update);
+            break;
+    }
+#else
+            tc6393xb_draw_graphic(s);
+#endif
+}
+
+
 static uint32_t tc6393xb_readb(void *opaque, target_phys_addr_t addr) {
     struct tc6393xb_s *s = opaque;
     addr -= s->target_base;
@@ -404,6 +516,8 @@ static uint32_t tc6393xb_readb(void *opaque, target_phys_addr_t addr) {
             return tc6393xb_scr_readb(s, addr & 0xff);
         case 1:
             return tc6393xb_nand_cfg_readb(s, addr & 0xff);
+        case 0x1000 ... 0x1fff:
+            return s->vram[addr - 0x100000];
     };
 
     if ((addr &~0xff) == s->nand_phys && s->nand_enable) {
@@ -428,6 +542,9 @@ static void tc6393xb_writeb(void *opaque, target_phys_addr_t addr, uint32_t valu
         case 1:
             tc6393xb_nand_cfg_writeb(s, addr & 0xff, value);
             return;
+        case 0x1000 ... 0x1fff:
+            s->vram[addr - 0x100000] = value&0xff;
+            return;
     };
 
     if ((addr &~0xff) == s->nand_phys && s->nand_enable)
@@ -465,7 +582,7 @@ static void tc6393xb_writel(void *opaque, target_phys_addr_t addr, uint32_t valu
     tc6393xb_writeb(opaque, addr + 3, value >> 24);
 }
 
-struct tc6393xb_s *tc6393xb_init(uint32_t base, qemu_irq irq)
+struct tc6393xb_s *tc6393xb_init(uint32_t base, qemu_irq irq, DisplayState *ds)
 {
     int iomemtype;
     struct tc6393xb_s *s;
@@ -493,6 +610,19 @@ struct tc6393xb_s *tc6393xb_init(uint32_t base, qemu_irq irq)
                     tc6393xb_writefn, s);
     cpu_register_physical_memory(s->target_base, 0x200000, iomemtype);
 
+    if (ds) {
+        s->ds = ds;
+        s->vram = qemu_mallocz(0x100000);
+        s->scr_width = 480;
+        s->scr_height = 640;
+        s->console = graphic_console_init(ds,
+                tc6393xb_update_display,
+                NULL, /* invalidate */
+                NULL, /* screen_dump */
+                NULL, /* text_update */
+                s);
+    }
+
     return s;
 }
 /* vim:set shiftwidth=4 ts=4 et: */
diff --git a/hw/tc6393xb_template.h b/hw/tc6393xb_template.h
new file mode 100644
index 0000000..1e0dcac
--- /dev/null
+++ b/hw/tc6393xb_template.h
@@ -0,0 +1,52 @@
+/*
+ * Toshiba TC6393XB I/O Controller.
+ * Found in Sharp Zaurus SL-6000 (tosa) or some
+ * Toshiba e-Series PDAs.
+ *
+ * FB support code. Based on G364 fb emulator
+ *
+ * Copyright (c) 2007 Hervé Poussineau
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+static void glue(tc6393xb_draw_graphic, BITS)(struct tc6393xb_s *s)
+{
+    int i, j;
+    int w_display;
+    uint16_t *data_buffer;
+    uint8_t *data_display, *dd;
+
+    data_buffer = (uint16_t*)s->vram;
+    w_display = s->scr_width * PIXEL_WIDTH / 8;
+    data_display = s->ds->data;
+    for(i = 0; i < s->scr_height; i++) {
+        dd = data_display;
+        for (j = 0; j < s->scr_width; j++, dd += PIXEL_WIDTH / 8, data_buffer++) {
+            uint16_t color = *data_buffer;
+            *((glue(glue(uint, PIXEL_WIDTH), _t) *)dd) = glue(rgb_to_pixel, BITS)(
+			    ((color & 0xf800) * 0x108) >> 11,
+			    ((color & 0x7e0) * 0x41) >> 9,
+			    ((color & 0x1f) * 0x21) >> 2
+			    );
+        }
+        data_display += s->ds->linesize;
+    }
+}
+
+#undef PIXEL_WIDTH
+#undef BITS
+
diff --git a/hw/tosa.c b/hw/tosa.c
index 711060c..cbb0cb2 100644
--- a/hw/tosa.c
+++ b/hw/tosa.c
@@ -204,7 +204,9 @@ static void tosa_init(ram_addr_t ram_size, int vga_ram_size,
     cpu_register_physical_memory(0, TOSA_ROM,
                     qemu_ram_alloc(TOSA_ROM) | IO_MEM_ROM);
 
-    tc6393xb_init(0x10000000, pxa2xx_gpio_in_get(cpu->gpio)[TOSA_GPIO_TC6393XB_INT]);
+    tc6393xb_init(0x10000000,
+            pxa2xx_gpio_in_get(cpu->gpio)[TOSA_GPIO_TC6393XB_INT],
+            ds);
 
     scp0 = scoop_init(cpu, 0, 0x08800000);
     scp1 = scoop_init(cpu, 1, 0x14800040);
-- 
1.5.6.5