Re: [Qemu-devel] [PATCH] vmware_vga: Add back some info in local state partially reverting aa32b38c

[Jan Kiszka <jan.kiszka@web.de>]

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On 2012-11-04 18:41, BALATON Zoltan wrote:
> 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>

Thanks!
Jan

> ---
>  hw/vmware_vga.c |   30 +++++++++++++++++++++---------
>  1 file changed, 21 insertions(+), 9 deletions(-)
> 
> diff --git a/hw/vmware_vga.c b/hw/vmware_vga.c
> index 7c766fb..834588d 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)
> 



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