Re: [Qemu-devel] [PATCH] spapr: Add support for -vga option

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

On Wed, 2011-12-14 at 20:22 +1100, Benjamin Herrenschmidt wrote:
> The -vga option is a handy "high level" option for instanciating things
> automatically. This adds support for it to the spapr (aka pseries)
> machine.
> 
> Also instanciate the USB keyboard and mouse when that option is used
> (you can still use -device to create individual devices without all
> the defaults)
> 
> The default remains no VGA and no USB, and of course you can use -device
> to manually instanciate individual devices.
> 
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> ---

BTW. Don't apply this just yet. New version coming soon.

Cheers,
Ben.

>  Makefile.target |    2 +-
>  hw/spapr.c      |   47 ++++++++++++++++++++++++++++++++++++++++++++++-
>  2 files changed, 47 insertions(+), 2 deletions(-)
> 
> diff --git a/Makefile.target b/Makefile.target
> index 03e3c55..c78fc25 100644
> --- a/Makefile.target
> +++ b/Makefile.target
> @@ -243,7 +243,7 @@ obj-i386-$(CONFIG_SPICE) += qxl.o qxl-logger.o qxl-render.o
>  
>  # shared objects
>  obj-ppc-y = ppc.o ppc_booke.o
> -obj-ppc-y += vga.o
> +obj-ppc-y += vga.o cirrus_vga.o
>  # PREP target
>  obj-ppc-y += mc146818rtc.o
>  obj-ppc-y += ppc_prep.o
> diff --git a/hw/spapr.c b/hw/spapr.c
> index c5353fb..3b9e576 100644
> --- a/hw/spapr.c
> +++ b/hw/spapr.c
> @@ -49,6 +49,7 @@
>  #include "pci.h"
>  #include "usb.h"
>  #include "usb-ohci.h"
> +#include "pc.h"
>  
>  #include "exec-memory.h"
>  
> @@ -76,6 +77,7 @@
>  #define PHANDLE_XICP            0x00001111
>  
>  sPAPREnvironment *spapr;
> +static int spapr_has_graphics;
>  
>  qemu_irq spapr_allocate_irq(uint32_t hint, uint32_t *irq_num)
>  {
> @@ -318,6 +320,9 @@ static void *spapr_create_fdt_skel(const char *cpu_model,
>      _FDT((fdt_property(fdt, "linux,initrd-end",
>                         &end_prop, sizeof(end_prop))));
>      _FDT((fdt_property_string(fdt, "qemu,boot-device", boot_device)));
> +    _FDT((fdt_property_cell(fdt, "qemu,graphic-width", graphic_width)));
> +    _FDT((fdt_property_cell(fdt, "qemu,graphic-height", graphic_height)));
> +    _FDT((fdt_property_cell(fdt, "qemu,graphic-depth", graphic_depth)));
>  
>      _FDT((fdt_end_node(fdt)));
>  
> @@ -563,7 +568,9 @@ static void spapr_finalize_fdt(sPAPREnvironment *spapr,
>          }
>      }
>  
> -    spapr_populate_chosen_stdout(fdt, spapr->vio_bus);
> +    if (!spapr_has_graphics) {
> +	spapr_populate_chosen_stdout(fdt, spapr->vio_bus);
> +    }
>  
>      _FDT((fdt_pack(fdt)));
>  
> @@ -603,6 +610,26 @@ static void spapr_reset(void *opaque)
>  
>  }
>  
> +static int spapr_vga_init(PCIBus *pci_bus)
> +{
> +    /* Default is nothing */
> +    if (cirrus_vga_enabled) {
> +        pci_cirrus_vga_init(pci_bus);
> +    } else if (vmsvga_enabled) {
> +	fprintf(stderr, "Warning: vmware_vga not available,"
> +		" using standard VGA instead\n");
> +	pci_vga_init(pci_bus);
> +#ifdef CONFIG_SPICE
> +    } else if (qxl_enabled) {
> +        pci_create_simple(pci_bus, -1, "qxl-vga");
> +#endif
> +    } else if (std_vga_enabled) {
> +        pci_vga_init(pci_bus);
> +    } else
> +       return 0;
> +    return 1;
> +}
> +
>  /* pSeries LPAR / sPAPR hardware init */
>  static void ppc_spapr_init(ram_addr_t ram_size,
>                             const char *boot_device,
> @@ -746,9 +773,27 @@ static void ppc_spapr_init(ram_addr_t ram_size,
>          spapr_vscsi_create(spapr->vio_bus, 0x2000 + i);
>      }
>  
> +    /* Graphics */
> +    if (spapr_vga_init(QLIST_FIRST(&spapr->phbs)->host_state.bus)) {
> +	spapr_has_graphics = 1;
> +	usb_enabled = 1;
> +    }
> +
> +    /* Default depth is 15 which is bad, SLOF only supports 8 so it should
> +     * be the default (while we should still allow to specify 16 or 32)
> +     * so I'm cheating and converting 15 to 8 here. Ideally we should have
> +     * a way to set the defaults per machine.
> +     */
> +    if (graphic_depth == 15)
> +        graphic_depth = 8;
> +
>      /* USB */
>      if (usb_enabled) {
>          usb_ohci_init_pci(QLIST_FIRST(&spapr->phbs)->host_state.bus, -1);
> +	if (spapr_has_graphics) {
> +	    usbdevice_create("keyboard");
> +	    usbdevice_create("mouse");
> +	}
>      }
>  
>      if (kernel_filename) {
>