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EHCI and OHCI PCI bus master

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This commit is contained in:
starous 2012-07-22 21:09:30 +02:00
parent a885261b5d
commit 39b27f1eaf
3 changed files with 15 additions and 0 deletions
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5
grub-core/bus/usb/ehci.c
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@ -533,6 +533,11 @@ grub_ehci_pci_iter (grub_pci_device_t dev,
"EHCI grub_ehci_pci_iter: registers above 4G are not supported\n");
return 0;
}
/* Set bus master - needed for coreboot, VMware, broken BIOSes etc. */
addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
grub_pci_write_word(addr,
GRUB_PCI_COMMAND_BUS_MASTER | grub_pci_read_word(addr));
grub_dprintf ("ehci", "EHCI grub_ehci_pci_iter: 32-bit EHCI OK\n");
}