diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2013-12-12 14:55:14 +0100 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2014-03-06 10:53:14 +0100 |
| commit | 5d598779b0d9b07e21b529e8495d2229245bfd5f (patch) | |
| tree | e75fa32dcea3b40582f4f98bb2222ffac8301f3d | |
| parent | e8436b5bade4887cd4edb2ca39e6b9014a410154 (diff) | |
| download | seabios-5d598779b0d9b07e21b529e8495d2229245bfd5f.tar.gz | |
vga: rework bar detection, add virtio-vga
Replace the heuristic which checks the bar 0 attributes to
figure whenever bar 0 or bar 1 has the linear framebuffer
with a vendor id check.
Add support for virtio-vga which uses bar 2 for the linear
framebuffer.
Cc: Dave Airlie <airlied@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
| -rw-r--r-- | vgasrc/bochsvga.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/vgasrc/bochsvga.c b/vgasrc/bochsvga.c index eae20ae1..5313f549 100644 --- a/vgasrc/bochsvga.c +++ b/vgasrc/bochsvga.c @@ -386,12 +386,20 @@ bochsvga_setup(void) u32 lfb_addr = VBE_DISPI_LFB_PHYSICAL_ADDRESS; int bdf = GET_GLOBAL(VgaBDF); if (CONFIG_VGA_PCI && bdf >= 0) { - int barid = 0; - u32 bar = pci_config_readl(bdf, PCI_BASE_ADDRESS_0); - if ((bar & PCI_BASE_ADDRESS_SPACE) != PCI_BASE_ADDRESS_SPACE_MEMORY) { + u16 vendor = pci_config_readw(bdf, PCI_VENDOR_ID); + int barid; + switch (vendor) { + case 0x15ad: /* qemu vmware vga */ barid = 1; - bar = pci_config_readl(bdf, PCI_BASE_ADDRESS_1); + break; + case 0x1af4: /* virtio-vga */ + barid = 2; + break; + default: /* stdvga, qxl */ + barid = 0; + break; } + u32 bar = pci_config_readl(bdf, PCI_BASE_ADDRESS_0 + barid * 4); lfb_addr = bar & PCI_BASE_ADDRESS_MEM_MASK; dprintf(1, "VBE DISPI: bdf %02x:%02x.%x, bar %d\n", pci_bdf_to_bus(bdf) , pci_bdf_to_dev(bdf), pci_bdf_to_fn(bdf), barid); |