vmware_vga: Add back some info in local state partially reverting aa32b38c

Keep saving display surface parameters at init and using these cached
values instead of getting them when needed. Not sure why this is
needed (maybe due to the interaction with the vga device) but not
doing this broke the Xorg vmware driver at least.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Tested-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

1 files changed, 21 insertions, 9 deletions

diff --git a/hw/vmware_vga.c b/hw/vmware_vga.c
index 7c766fb3d..834588daf 100644
--- a/hw/vmware_vga.c
+++ b/hw/vmware_vga.c
@@ -39,6 +39,8 @@ struct vmsvga_state_s {
     VGACommonState vga;
 
     int invalidated;
+    int depth;
+    int bypp;
     int enable;
     int config;
     struct {
@@ -55,6 +57,9 @@ struct vmsvga_state_s {
     int new_height;
     uint32_t guest;
     uint32_t svgaid;
+    uint32_t wred;
+    uint32_t wgreen;
+    uint32_t wblue;
     int syncing;
 
     MemoryRegion fifo_ram;
@@ -718,25 +723,25 @@ static uint32_t vmsvga_value_read(void *opaque, uint32_t address)
         return SVGA_MAX_HEIGHT;
 
     case SVGA_REG_DEPTH:
-        return ds_get_depth(s->vga.ds);
+        return s->depth;
 
     case SVGA_REG_BITS_PER_PIXEL:
-        return ds_get_bits_per_pixel(s->vga.ds);
+        return (s->depth + 7) & ~7;
 
     case SVGA_REG_PSEUDOCOLOR:
         return 0x0;
 
     case SVGA_REG_RED_MASK:
-        return ds_get_rmask(s->vga.ds);
+        return s->wred;
 
     case SVGA_REG_GREEN_MASK:
-        return ds_get_gmask(s->vga.ds);
+        return s->wgreen;
 
     case SVGA_REG_BLUE_MASK:
-        return ds_get_bmask(s->vga.ds);
+        return s->wblue;
 
     case SVGA_REG_BYTES_PER_LINE:
-        return ds_get_bytes_per_pixel(s->vga.ds) * s->new_width;
+        return s->bypp * s->new_width;
 
     case SVGA_REG_FB_START: {
         struct pci_vmsvga_state_s *pci_vmsvga
@@ -801,7 +806,7 @@ static uint32_t vmsvga_value_read(void *opaque, uint32_t address)
         return s->cursor.on;
 
     case SVGA_REG_HOST_BITS_PER_PIXEL:
-        return ds_get_bits_per_pixel(s->vga.ds);
+        return (s->depth + 7) & ~7;
 
     case SVGA_REG_SCRATCH_SIZE:
         return s->scratch_size;
@@ -864,7 +869,7 @@ static void vmsvga_value_write(void *opaque, uint32_t address, uint32_t value)
         break;
 
     case SVGA_REG_BITS_PER_PIXEL:
-        if (value != ds_get_bits_per_pixel(s->vga.ds)) {
+        if (value != s->depth) {
             printf("%s: Bad bits per pixel: %i bits\n", __func__, value);
             s->config = 0;
         }
@@ -1084,7 +1089,7 @@ static const VMStateDescription vmstate_vmware_vga_internal = {
     .minimum_version_id_old = 0,
     .post_load = vmsvga_post_load,
     .fields      = (VMStateField[]) {
-        VMSTATE_UNUSED(4), /* was depth */
+        VMSTATE_INT32_EQUAL(depth, struct vmsvga_state_s),
         VMSTATE_INT32(enable, struct vmsvga_state_s),
         VMSTATE_INT32(config, struct vmsvga_state_s),
         VMSTATE_INT32(cursor.id, struct vmsvga_state_s),
@@ -1137,6 +1142,13 @@ static void vmsvga_init(struct vmsvga_state_s *s,
     vga_common_init(&s->vga);
     vga_init(&s->vga, address_space, io, true);
     vmstate_register(NULL, 0, &vmstate_vga_common, &s->vga);
+    /* Save some values here in case they are changed later.
+     * This is suspicious and needs more though why it is needed. */
+    s->depth = ds_get_bits_per_pixel(s->vga.ds);
+    s->bypp = ds_get_bytes_per_pixel(s->vga.ds);
+    s->wred = ds_get_rmask(s->vga.ds);
+    s->wgreen = ds_get_gmask(s->vga.ds);
+    s->wblue = ds_get_bmask(s->vga.ds);
 }
 
 static uint64_t vmsvga_io_read(void *opaque, hwaddr addr, unsigned size)