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| author | Keir Fraser <keir.fraser@citrix.com> | 2008-12-11 13:26:02 +0000 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2008-12-11 13:26:02 +0000 |
| commit | 20553adcd9157010e708488b8b74af8cc135096a (patch) | |
| tree | 078c3dc9329036c5c663dd746e7c6ada03f9762e /tools | |
| parent | 4fef1ea1f4be2baa11c68d5577f4df1ede76bf59 (diff) | |
| download | xen-20553adcd9157010e708488b8b74af8cc135096a.tar.gz xen-20553adcd9157010e708488b8b74af8cc135096a.tar.bz2 xen-20553adcd9157010e708488b8b74af8cc135096a.zip | |
hvmloader: enable bus mastering of PCI device
Without this, init routine in some PCI option ROM doesn't work well.
Signed-off-by: Kouya Shimura <kouya@jp.fujitsu.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/firmware/hvmloader/hvmloader.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/firmware/hvmloader/hvmloader.c b/tools/firmware/hvmloader/hvmloader.c index bff548f9f2..9723306f8e 100644 --- a/tools/firmware/hvmloader/hvmloader.c +++ b/tools/firmware/hvmloader/hvmloader.c @@ -269,6 +269,11 @@ static void pci_setup(void) printf("pci dev %02x:%x INT%c->IRQ%u\n", devfn>>3, devfn&7, 'A'+pin-1, isa_irq); } + + /* Enable bus mastering. */ + cmd = pci_readw(devfn, PCI_COMMAND); + cmd |= PCI_COMMAND_MASTER; + pci_writew(devfn, PCI_COMMAND, cmd); } /* Assign iomem and ioport resources in descending order of size. */ |