Add cirrus reset handler

The vga reset handler overwrites some cirrus registers, causing reboots
to corrupt cirrus state to the point that guests can only bring up 640x480
resolutions.

Fix by adding a dedicated cirrus reset handler (which calls the common vga
handler).

Signed-off-by: Avi Kivity <avi@redhat.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6191 c046a42c-6fe2-441c-8c8c-71466251a162

3 files changed, 66 insertions, 53 deletions

diff --git a/hw/cirrus_vga.c b/hw/cirrus_vga.c
index 83c5f40..f9ad479 100644
--- a/hw/cirrus_vga.c
+++ b/hw/cirrus_vga.c
@@ -287,6 +287,8 @@ typedef struct CirrusVGAState {
     int last_hw_cursor_y_end;
     int real_vram_size; /* XXX: suppress that */
     CPUWriteMemoryFunc **cirrus_linear_write;
+    int device_id;
+    int bustype;
 } CirrusVGAState;
 
 typedef struct PCICirrusVGAState {
@@ -3175,55 +3177,13 @@ static int cirrus_vga_load(QEMUFile *f, void *opaque, int version_id)
  *
  ***************************************/
 
-static void cirrus_init_common(CirrusVGAState * s, int device_id, int is_pci)
+static void cirrus_reset(void *opaque)
 {
-    int i;
-    static int inited;
-
-    if (!inited) {
-        inited = 1;
-        for(i = 0;i < 256; i++)
-            rop_to_index[i] = CIRRUS_ROP_NOP_INDEX; /* nop rop */
-        rop_to_index[CIRRUS_ROP_0] = 0;
-        rop_to_index[CIRRUS_ROP_SRC_AND_DST] = 1;
-        rop_to_index[CIRRUS_ROP_NOP] = 2;
-        rop_to_index[CIRRUS_ROP_SRC_AND_NOTDST] = 3;
-        rop_to_index[CIRRUS_ROP_NOTDST] = 4;
-        rop_to_index[CIRRUS_ROP_SRC] = 5;
-        rop_to_index[CIRRUS_ROP_1] = 6;
-        rop_to_index[CIRRUS_ROP_NOTSRC_AND_DST] = 7;
-        rop_to_index[CIRRUS_ROP_SRC_XOR_DST] = 8;
-        rop_to_index[CIRRUS_ROP_SRC_OR_DST] = 9;
-        rop_to_index[CIRRUS_ROP_NOTSRC_OR_NOTDST] = 10;
-        rop_to_index[CIRRUS_ROP_SRC_NOTXOR_DST] = 11;
-        rop_to_index[CIRRUS_ROP_SRC_OR_NOTDST] = 12;
-        rop_to_index[CIRRUS_ROP_NOTSRC] = 13;
-        rop_to_index[CIRRUS_ROP_NOTSRC_OR_DST] = 14;
-        rop_to_index[CIRRUS_ROP_NOTSRC_AND_NOTDST] = 15;
-    }
-
-    register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s);
-
-    register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s);
-    register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s);
-    register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s);
-    register_ioport_write(0x3da, 1, 1, vga_ioport_write, s);
-
-    register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s);
-
-    register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s);
-    register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s);
-    register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s);
-    register_ioport_read(0x3da, 1, 1, vga_ioport_read, s);
-
-    s->vga_io_memory = cpu_register_io_memory(0, cirrus_vga_mem_read,
-                                           cirrus_vga_mem_write, s);
-    cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000,
-                                 s->vga_io_memory);
-    qemu_register_coalesced_mmio(isa_mem_base + 0x000a0000, 0x20000);
+    CirrusVGAState *s = opaque;
 
+    vga_reset(s);
     s->sr[0x06] = 0x0f;
-    if (device_id == CIRRUS_ID_CLGD5446) {
+    if (s->device_id == CIRRUS_ID_CLGD5446) {
         /* 4MB 64 bit memory config, always PCI */
         s->sr[0x1F] = 0x2d;		// MemClock
         s->gr[0x18] = 0x0f;             // fastest memory configuration
@@ -3241,14 +3201,11 @@ static void cirrus_init_common(CirrusVGAState * s, int device_id, int is_pci)
     } else {
         s->sr[0x1F] = 0x22;		// MemClock
         s->sr[0x0F] = CIRRUS_MEMSIZE_2M;
-        if (is_pci)
-            s->sr[0x17] = CIRRUS_BUSTYPE_PCI;
-        else
-            s->sr[0x17] = CIRRUS_BUSTYPE_ISA;
+        s->sr[0x17] = s->bustype;
         s->real_vram_size = 2048 * 1024;
         s->sr[0x15] = 0x03; /* memory size, 3=2MB, 4=4MB */
     }
-    s->cr[0x27] = device_id;
+    s->cr[0x27] = s->device_id;
 
     /* Win2K seems to assume that the pattern buffer is at 0xff
        initially ! */
@@ -3281,7 +3238,62 @@ static void cirrus_init_common(CirrusVGAState * s, int device_id, int is_pci)
     s->get_resolution = cirrus_get_resolution;
     s->cursor_invalidate = cirrus_cursor_invalidate;
     s->cursor_draw_line = cirrus_cursor_draw_line;
+}
+
+static void cirrus_init_common(CirrusVGAState * s, int device_id, int is_pci)
+{
+    int i;
+    static int inited;
+
+    if (!inited) {
+        inited = 1;
+        for(i = 0;i < 256; i++)
+            rop_to_index[i] = CIRRUS_ROP_NOP_INDEX; /* nop rop */
+        rop_to_index[CIRRUS_ROP_0] = 0;
+        rop_to_index[CIRRUS_ROP_SRC_AND_DST] = 1;
+        rop_to_index[CIRRUS_ROP_NOP] = 2;
+        rop_to_index[CIRRUS_ROP_SRC_AND_NOTDST] = 3;
+        rop_to_index[CIRRUS_ROP_NOTDST] = 4;
+        rop_to_index[CIRRUS_ROP_SRC] = 5;
+        rop_to_index[CIRRUS_ROP_1] = 6;
+        rop_to_index[CIRRUS_ROP_NOTSRC_AND_DST] = 7;
+        rop_to_index[CIRRUS_ROP_SRC_XOR_DST] = 8;
+        rop_to_index[CIRRUS_ROP_SRC_OR_DST] = 9;
+        rop_to_index[CIRRUS_ROP_NOTSRC_OR_NOTDST] = 10;
+        rop_to_index[CIRRUS_ROP_SRC_NOTXOR_DST] = 11;
+        rop_to_index[CIRRUS_ROP_SRC_OR_NOTDST] = 12;
+        rop_to_index[CIRRUS_ROP_NOTSRC] = 13;
+        rop_to_index[CIRRUS_ROP_NOTSRC_OR_DST] = 14;
+        rop_to_index[CIRRUS_ROP_NOTSRC_AND_NOTDST] = 15;
+        s->device_id = device_id;
+        if (is_pci)
+            s->bustype = CIRRUS_BUSTYPE_PCI;
+        else
+            s->bustype = CIRRUS_BUSTYPE_ISA;
+    }
+
+    register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s);
+
+    register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s);
+    register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s);
+    register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s);
+    register_ioport_write(0x3da, 1, 1, vga_ioport_write, s);
+
+    register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s);
+
+    register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s);
+    register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s);
+    register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s);
+    register_ioport_read(0x3da, 1, 1, vga_ioport_read, s);
+
+    s->vga_io_memory = cpu_register_io_memory(0, cirrus_vga_mem_read,
+                                           cirrus_vga_mem_write, s);
+    cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000,
+                                 s->vga_io_memory);
+    qemu_register_coalesced_mmio(isa_mem_base + 0x000a0000, 0x20000);
 
+    qemu_register_reset(cirrus_reset, s);
+    cirrus_reset(s);
     register_savevm("cirrus_vga", 0, 2, cirrus_vga_save, cirrus_vga_load, s);
 }
 
diff --git a/hw/vga.c b/hw/vga.c
index 8021207..bf84c24 100644
--- a/hw/vga.c
+++ b/hw/vga.c
@@ -1839,7 +1839,7 @@ static void vga_invalidate_display(void *opaque)
     s->last_height = -1;
 }
 
-static void vga_reset(void *opaque)
+void vga_reset(void *opaque)
 {
     VGAState *s = (VGAState *) opaque;
 
@@ -2277,7 +2277,6 @@ void vga_common_init(VGAState *s, DisplayState *ds, uint8_t *vga_ram_base,
         s->update_retrace_info = vga_precise_update_retrace_info;
         break;
     }
-    qemu_register_reset(vga_reset, s);
     vga_reset(s);
 }
 
@@ -2286,6 +2285,7 @@ void vga_init(VGAState *s)
 {
     int vga_io_memory;
 
+    qemu_register_reset(vga_reset, s);
     register_savevm("vga", 0, 2, vga_save, vga_load, s);
 
     register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s);
diff --git a/hw/vga_int.h b/hw/vga_int.h
index 0c6ae7e..39b7367 100644
--- a/hw/vga_int.h
+++ b/hw/vga_int.h
@@ -193,6 +193,7 @@ static inline int c6_to_8(int v)
 void vga_common_init(VGAState *s, DisplayState *ds, uint8_t *vga_ram_base,
                      ram_addr_t vga_ram_offset, int vga_ram_size);
 void vga_init(VGAState *s);
+void vga_reset(void *s);
 
 void vga_dirty_log_start(VGAState *s);
 void vga_dirty_log_stop(VGAState *s);