g364fb: convert to qdev

Extract G364 ROM contents from device emulation to machine emulation,
so device emulation can be reused in other machines (Commodore Amiga)

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

3 files changed, 164 insertions, 196 deletions

diff --git a/hw/g364fb.c b/hw/g364fb.c
index fa074f4..5e7bcfa 100644
--- a/hw/g364fb.c
+++ b/hw/g364fb.c
@@ -1,7 +1,7 @@
 /*
  * QEMU G364 framebuffer Emulator.
  *
- * Copyright (c) 2007-2009 Herve Poussineau
+ * Copyright (c) 2007-2011 Herve Poussineau
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
@@ -18,17 +18,18 @@
  */
 
 #include "hw.h"
-#include "mips.h"
 #include "console.h"
 #include "pixel_ops.h"
 #include "trace.h"
+#include "sysbus.h"
 
 typedef struct G364State {
     /* hardware */
     uint8_t *vram;
-    ram_addr_t vram_offset;
-    int vram_size;
+    uint32_t vram_size;
     qemu_irq irq;
+    MemoryRegion mem_vram;
+    MemoryRegion mem_ctrl;
     /* registers */
     uint8_t color_palette[256][3];
     uint8_t cursor_palette[3][3];
@@ -43,31 +44,32 @@ typedef struct G364State {
     int blanked;
 } G364State;
 
-#define REG_ID       0x000000
-#define REG_BOOT     0x080000
-#define REG_DISPLAY  0x080118
-#define REG_VDISPLAY 0x080150
-#define REG_CTLA     0x080300
-#define REG_TOP      0x080400
-#define REG_CURS_PAL 0x080508
-#define REG_CURS_POS 0x080638
-#define REG_CLR_PAL  0x080800
-#define REG_CURS_PAT 0x081000
-#define REG_RESET    0x180000
+#define REG_BOOT     0x000000
+#define REG_DISPLAY  0x000118
+#define REG_VDISPLAY 0x000150
+#define REG_CTLA     0x000300
+#define REG_TOP      0x000400
+#define REG_CURS_PAL 0x000508
+#define REG_CURS_POS 0x000638
+#define REG_CLR_PAL  0x000800
+#define REG_CURS_PAT 0x001000
+#define REG_RESET    0x100000
 
 #define CTLA_FORCE_BLANK 0x00000400
 #define CTLA_NO_CURSOR   0x00800000
 
-static inline int check_dirty(ram_addr_t page)
+static inline int check_dirty(G364State *s, ram_addr_t page)
 {
-    return cpu_physical_memory_get_dirty(page, VGA_DIRTY_FLAG);
+    return memory_region_get_dirty(&s->mem_vram, page, DIRTY_MEMORY_VGA);
 }
 
 static inline void reset_dirty(G364State *s,
                                ram_addr_t page_min, ram_addr_t page_max)
 {
-    cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE - 1,
-                                    VGA_DIRTY_FLAG);
+    memory_region_reset_dirty(&s->mem_vram,
+                              page_min,
+                              page_max + TARGET_PAGE_SIZE - page_min - 1,
+                              DIRTY_MEMORY_VGA);
 }
 
 static void g364fb_draw_graphic8(G364State *s)
@@ -105,7 +107,7 @@ static void g364fb_draw_graphic8(G364State *s)
             return;
     }
 
-    page = s->vram_offset;
+    page = 0;
     page_min = (ram_addr_t)-1;
     page_max = 0;
 
@@ -126,7 +128,7 @@ static void g364fb_draw_graphic8(G364State *s)
     /* XXX: out of range in vram? */
     data_display = dd = ds_get_data(s->ds);
     while (y < s->height) {
-        if (check_dirty(page)) {
+        if (check_dirty(s, page)) {
             if (y < ymin)
                 ymin = ymax = y;
             if (page_min == (ram_addr_t)-1)
@@ -266,13 +268,12 @@ static inline void g364fb_invalidate_display(void *opaque)
 
     s->blanked = 0;
     for (i = 0; i < s->vram_size; i += TARGET_PAGE_SIZE) {
-        cpu_physical_memory_set_dirty(s->vram_offset + i);
+        memory_region_set_dirty(&s->mem_vram, i);
     }
 }
 
-static void g364fb_reset(void *opaque)
+static void g364fb_reset(G364State *s)
 {
-    G364State *s = opaque;
     qemu_irq_lower(s->irq);
 
     memset(s->color_palette, 0, sizeof(s->color_palette));
@@ -283,7 +284,7 @@ static void g364fb_reset(void *opaque)
     s->top_of_screen = 0;
     s->width = s->height = 0;
     memset(s->vram, 0, s->vram_size);
-    g364fb_invalidate_display(opaque);
+    g364fb_invalidate_display(s);
 }
 
 static void g364fb_screen_dump(void *opaque, const char *filename)
@@ -327,7 +328,9 @@ static void g364fb_screen_dump(void *opaque, const char *filename)
 }
 
 /* called for accesses to io ports */
-static uint32_t g364fb_ctrl_readl(void *opaque, target_phys_addr_t addr)
+static uint64_t g364fb_ctrl_read(void *opaque,
+                                 target_phys_addr_t addr,
+                                 unsigned int size)
 {
     G364State *s = opaque;
     uint32_t val;
@@ -344,9 +347,6 @@ static uint32_t g364fb_ctrl_readl(void *opaque, target_phys_addr_t addr)
         val |= ((uint32_t)s->cursor_palette[idx][2] << 0);
     } else {
         switch (addr) {
-            case REG_ID:
-                val = 0x10; /* Mips G364 */
-                break;
             case REG_DISPLAY:
                 val = s->width / 4;
                 break;
@@ -371,21 +371,6 @@ static uint32_t g364fb_ctrl_readl(void *opaque, target_phys_addr_t addr)
     return val;
 }
 
-static uint32_t g364fb_ctrl_readw(void *opaque, target_phys_addr_t addr)
-{
-    uint32_t v = g364fb_ctrl_readl(opaque, addr & ~0x3);
-    if (addr & 0x2)
-        return v >> 16;
-    else
-        return v & 0xffff;
-}
-
-static uint32_t g364fb_ctrl_readb(void *opaque, target_phys_addr_t addr)
-{
-    uint32_t v = g364fb_ctrl_readl(opaque, addr & ~0x3);
-    return (v >> (8 * (addr & 0x3))) & 0xff;
-}
-
 static void g364fb_update_depth(G364State *s)
 {
     static const int depths[8] = { 1, 2, 4, 8, 15, 16, 0 };
@@ -403,11 +388,14 @@ static void g364_invalidate_cursor_position(G364State *s)
     end = (ymax + 1) * ds_get_linesize(s->ds);
 
     for (i = start; i < end; i += TARGET_PAGE_SIZE) {
-        cpu_physical_memory_set_dirty(s->vram_offset + i);
+        memory_region_set_dirty(&s->mem_vram, i);
     }
 }
 
-static void g364fb_ctrl_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
+static void g364fb_ctrl_write(void *opaque,
+                              target_phys_addr_t addr,
+                              uint64_t val,
+                              unsigned int size)
 {
     G364State *s = opaque;
 
@@ -434,121 +422,65 @@ static void g364fb_ctrl_writel(void *opaque, target_phys_addr_t addr, uint32_t v
         g364fb_invalidate_display(s);
     } else {
         switch (addr) {
-            case REG_ID: /* Card identifier; read-only */
-            case REG_BOOT: /* Boot timing */
-            case 0x80108: /* Line timing: half sync */
-            case 0x80110: /* Line timing: back porch */
-            case 0x80120: /* Line timing: short display */
-            case 0x80128: /* Frame timing: broad pulse */
-            case 0x80130: /* Frame timing: v sync */
-            case 0x80138: /* Frame timing: v preequalise */
-            case 0x80140: /* Frame timing: v postequalise */
-            case 0x80148: /* Frame timing: v blank */
-            case 0x80158: /* Line timing: line time */
-            case 0x80160: /* Frame store: line start */
-            case 0x80168: /* vram cycle: mem init */
-            case 0x80170: /* vram cycle: transfer delay */
-            case 0x80200: /* vram cycle: mask register */
-                /* ignore */
-                break;
-            case REG_TOP:
-                s->top_of_screen = val;
-                g364fb_invalidate_display(s);
-                break;
-            case REG_DISPLAY:
-                s->width = val * 4;
-                break;
-            case REG_VDISPLAY:
-                s->height = val / 2;
-                break;
-            case REG_CTLA:
-                s->ctla = val;
-                g364fb_update_depth(s);
-                g364fb_invalidate_display(s);
-                break;
-            case REG_CURS_POS:
-                g364_invalidate_cursor_position(s);
-                s->cursor_position = val;
-                g364_invalidate_cursor_position(s);
-                break;
-            case REG_RESET:
-                g364fb_reset(s);
-                break;
-            default:
-                error_report("g364: invalid write of 0x%" PRIx64
-                             " at [" TARGET_FMT_plx "]", val, addr);
-                break;
+        case REG_BOOT: /* Boot timing */
+        case 0x00108: /* Line timing: half sync */
+        case 0x00110: /* Line timing: back porch */
+        case 0x00120: /* Line timing: short display */
+        case 0x00128: /* Frame timing: broad pulse */
+        case 0x00130: /* Frame timing: v sync */
+        case 0x00138: /* Frame timing: v preequalise */
+        case 0x00140: /* Frame timing: v postequalise */
+        case 0x00148: /* Frame timing: v blank */
+        case 0x00158: /* Line timing: line time */
+        case 0x00160: /* Frame store: line start */
+        case 0x00168: /* vram cycle: mem init */
+        case 0x00170: /* vram cycle: transfer delay */
+        case 0x00200: /* vram cycle: mask register */
+            /* ignore */
+            break;
+        case REG_TOP:
+            s->top_of_screen = val;
+            g364fb_invalidate_display(s);
+            break;
+        case REG_DISPLAY:
+            s->width = val * 4;
+            break;
+        case REG_VDISPLAY:
+            s->height = val / 2;
+            break;
+        case REG_CTLA:
+            s->ctla = val;
+            g364fb_update_depth(s);
+            g364fb_invalidate_display(s);
+            break;
+        case REG_CURS_POS:
+            g364_invalidate_cursor_position(s);
+            s->cursor_position = val;
+            g364_invalidate_cursor_position(s);
+            break;
+        case REG_RESET:
+            g364fb_reset(s);
+            break;
+        default:
+            error_report("g364: invalid write of 0x%" PRIx64
+                         " at [" TARGET_FMT_plx "]", val, addr);
+            break;
         }
     }
     qemu_irq_lower(s->irq);
 }
 
-static void g364fb_ctrl_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
-{
-    uint32_t old_val = g364fb_ctrl_readl(opaque, addr & ~0x3);
-
-    if (addr & 0x2)
-        val = (val << 16) | (old_val & 0x0000ffff);
-    else
-        val = val | (old_val & 0xffff0000);
-    g364fb_ctrl_writel(opaque, addr & ~0x3, val);
-}
-
-static void g364fb_ctrl_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
-{
-    uint32_t old_val = g364fb_ctrl_readl(opaque, addr & ~0x3);
-
-    switch (addr & 3) {
-    case 0:
-        val = val | (old_val & 0xffffff00);
-        break;
-    case 1:
-        val = (val << 8) | (old_val & 0xffff00ff);
-        break;
-    case 2:
-        val = (val << 16) | (old_val & 0xff00ffff);
-        break;
-    case 3:
-        val = (val << 24) | (old_val & 0x00ffffff);
-        break;
-    }
-    g364fb_ctrl_writel(opaque, addr & ~0x3, val);
-}
-
-static CPUReadMemoryFunc * const g364fb_ctrl_read[3] = {
-    g364fb_ctrl_readb,
-    g364fb_ctrl_readw,
-    g364fb_ctrl_readl,
-};
-
-static CPUWriteMemoryFunc * const g364fb_ctrl_write[3] = {
-    g364fb_ctrl_writeb,
-    g364fb_ctrl_writew,
-    g364fb_ctrl_writel,
+static const MemoryRegionOps g364fb_ctrl_ops = {
+    .read = g364fb_ctrl_read,
+    .write = g364fb_ctrl_write,
+    .endianness = DEVICE_LITTLE_ENDIAN,
+    .impl.min_access_size = 4,
+    .impl.max_access_size = 4,
 };
 
-static int g364fb_load(QEMUFile *f, void *opaque, int version_id)
+static int g364fb_post_load(void *opaque, int version_id)
 {
     G364State *s = opaque;
-    unsigned int i, vram_size;
-
-    if (version_id != 1)
-        return -EINVAL;
-
-    vram_size = qemu_get_be32(f);
-    if (vram_size < s->vram_size)
-        return -EINVAL;
-    qemu_get_buffer(f, s->vram, s->vram_size);
-    for (i = 0; i < 256; i++)
-        qemu_get_buffer(f, s->color_palette[i], 3);
-    for (i = 0; i < 3; i++)
-        qemu_get_buffer(f, s->cursor_palette[i], 3);
-    qemu_get_buffer(f, (uint8_t *)s->cursor, sizeof(s->cursor));
-    s->cursor_position = qemu_get_be32(f);
-    s->ctla = qemu_get_be32(f);
-    s->top_of_screen = qemu_get_be32(f);
-    s->width = qemu_get_be32(f);
-    s->height = qemu_get_be32(f);
 
     /* force refresh */
     g364fb_update_depth(s);
@@ -557,52 +489,80 @@ static int g364fb_load(QEMUFile *f, void *opaque, int version_id)
     return 0;
 }
 
-static void g364fb_save(QEMUFile *f, void *opaque)
-{
-    G364State *s = opaque;
-    int i;
-
-    qemu_put_be32(f, s->vram_size);
-    qemu_put_buffer(f, s->vram, s->vram_size);
-    for (i = 0; i < 256; i++)
-        qemu_put_buffer(f, s->color_palette[i], 3);
-    for (i = 0; i < 3; i++)
-        qemu_put_buffer(f, s->cursor_palette[i], 3);
-    qemu_put_buffer(f, (uint8_t *)s->cursor, sizeof(s->cursor));
-    qemu_put_be32(f, s->cursor_position);
-    qemu_put_be32(f, s->ctla);
-    qemu_put_be32(f, s->top_of_screen);
-    qemu_put_be32(f, s->width);
-    qemu_put_be32(f, s->height);
-}
+static const VMStateDescription vmstate_g364fb = {
+    .name = "g364fb",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .minimum_version_id_old = 1,
+    .post_load = g364fb_post_load,
+    .fields = (VMStateField[]) {
+        VMSTATE_VBUFFER_UINT32(vram, G364State, 1, NULL, 0, vram_size),
+        VMSTATE_BUFFER_UNSAFE(color_palette, G364State, 0, 256 * 3),
+        VMSTATE_BUFFER_UNSAFE(cursor_palette, G364State, 0, 9),
+        VMSTATE_UINT16_ARRAY(cursor, G364State, 512),
+        VMSTATE_UINT32(cursor_position, G364State),
+        VMSTATE_UINT32(ctla, G364State),
+        VMSTATE_UINT32(top_of_screen, G364State),
+        VMSTATE_UINT32(width, G364State),
+        VMSTATE_UINT32(height, G364State),
+        VMSTATE_END_OF_LIST()
+    }
+};
 
-int g364fb_mm_init(target_phys_addr_t vram_base,
-                   target_phys_addr_t ctrl_base, int it_shift,
-                   qemu_irq irq)
+static void g364fb_init(DeviceState *dev, G364State *s)
 {
-    G364State *s;
-    int io_ctrl;
-
-    s = g_malloc0(sizeof(G364State));
-
-    s->vram_size = 8 * 1024 * 1024;
-    s->vram_offset = qemu_ram_alloc(NULL, "g364fb.vram", s->vram_size);
-    s->vram = qemu_get_ram_ptr(s->vram_offset);
-    s->irq = irq;
-
-    qemu_register_reset(g364fb_reset, s);
-    register_savevm(NULL, "g364fb", 0, 1, g364fb_save, g364fb_load, s);
-    g364fb_reset(s);
+    s->vram = g_malloc0(s->vram_size);
 
     s->ds = graphic_console_init(g364fb_update_display,
                                  g364fb_invalidate_display,
                                  g364fb_screen_dump, NULL, s);
 
-    cpu_register_physical_memory(vram_base, s->vram_size, s->vram_offset);
+    memory_region_init_io(&s->mem_ctrl, &g364fb_ctrl_ops, s, "ctrl", 0x180000);
+    memory_region_init_ram_ptr(&s->mem_vram, dev, "vram",
+                               s->vram_size, s->vram);
+    memory_region_set_coalescing(&s->mem_vram);
+}
+
+typedef struct {
+    SysBusDevice busdev;
+    G364State g364;
+} G364SysBusState;
 
-    io_ctrl = cpu_register_io_memory(g364fb_ctrl_read, g364fb_ctrl_write, s,
-                                     DEVICE_NATIVE_ENDIAN);
-    cpu_register_physical_memory(ctrl_base, 0x200000, io_ctrl);
+static int g364fb_sysbus_init(SysBusDevice *dev)
+{
+    G364State *s = &FROM_SYSBUS(G364SysBusState, dev)->g364;
+
+    g364fb_init(&dev->qdev, s);
+    sysbus_init_irq(dev, &s->irq);
+    sysbus_init_mmio_region(dev, &s->mem_ctrl);
+    sysbus_init_mmio_region(dev, &s->mem_vram);
 
     return 0;
 }
+
+static void g364fb_sysbus_reset(DeviceState *d)
+{
+    G364SysBusState *s = DO_UPCAST(G364SysBusState, busdev.qdev, d);
+    g364fb_reset(&s->g364);
+}
+
+static SysBusDeviceInfo g364fb_sysbus_info = {
+    .init = g364fb_sysbus_init,
+    .qdev.name = "sysbus-g364",
+    .qdev.desc = "G364 framebuffer",
+    .qdev.size = sizeof(G364SysBusState),
+    .qdev.vmsd = &vmstate_g364fb,
+    .qdev.reset = g364fb_sysbus_reset,
+    .qdev.props = (Property[]) {
+        DEFINE_PROP_HEX32("vram_size", G364SysBusState, g364.vram_size,
+                          8 * 1024 * 1024),
+        DEFINE_PROP_END_OF_LIST(),
+    }
+};
+
+static void g364fb_register(void)
+{
+    sysbus_register_withprop(&g364fb_sysbus_info);
+}
+
+device_init(g364fb_register);
diff --git a/hw/mips.h b/hw/mips.h
index cae5f4c..8ce41fc 100644
--- a/hw/mips.h
+++ b/hw/mips.h
@@ -8,11 +8,6 @@ PCIBus *gt64120_register(qemu_irq *pic);
 /* bonito.c */
 PCIBus *bonito_init(qemu_irq *pic);
 
-/* g364fb.c */
-int g364fb_mm_init(target_phys_addr_t vram_base,
-                   target_phys_addr_t ctrl_base, int it_shift,
-                   qemu_irq irq);
-
 /* mipsnet.c */
 void mipsnet_init(int base, qemu_irq irq, NICInfo *nd);
 
diff --git a/hw/mips_jazz.c b/hw/mips_jazz.c
index 84ce061..f3c9f93 100644
--- a/hw/mips_jazz.c
+++ b/hw/mips_jazz.c
@@ -195,7 +195,20 @@ void mips_jazz_init (ram_addr_t ram_size,
     /* Video card */
     switch (jazz_model) {
     case JAZZ_MAGNUM:
-        g364fb_mm_init(0x40000000, 0x60000000, 0, rc4030[3]);
+        dev = qdev_create(NULL, "sysbus-g364");
+        qdev_init_nofail(dev);
+        sysbus = sysbus_from_qdev(dev);
+        sysbus_mmio_map(sysbus, 0, 0x60080000);
+        sysbus_mmio_map(sysbus, 1, 0x40000000);
+        sysbus_connect_irq(sysbus, 0, rc4030[3]);
+        {
+            /* Simple ROM, so user doesn't have to provide one */
+            ram_addr_t rom_offset = qemu_ram_alloc(NULL, "g364fb.rom", 0x80000);
+            uint8_t *rom = qemu_get_ram_ptr(rom_offset);
+            cpu_register_physical_memory(0x60000000, 0x80000,
+                                         rom_offset | IO_MEM_ROM);
+            rom[0] = 0x10; /* Mips G364 */
+        }
         break;
     case JAZZ_PICA61:
         isa_vga_mm_init(0x40000000, 0x60000000, 0, get_system_memory());