From patchwork Tue Nov 20 17:33:41 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: esp: enable busmaster Date: Tue, 20 Nov 2012 07:33:41 -0000 From: Paolo Bonzini X-Patchwork-Id: 200490 Message-Id: <1353432821-32517-1-git-send-email-pbonzini@redhat.com> To: seabios@seabios.org Cc: kraxel@redhat.com, qemu-devel@nongnu.org The HBA does DMA, thus we must enable the busmaster bit, otherwise dma access will fail with recent qemu versions. Signed-off-by: Paolo Bonzini --- src/esp-scsi.c | 2 ++ 1 file modificato, 2 inserzioni(+) diff --git a/src/esp-scsi.c b/src/esp-scsi.c index b795012..c43e55b 100644 --- a/src/esp-scsi.c +++ b/src/esp-scsi.c @@ -202,6 +202,8 @@ init_esp_scsi(struct pci_device *pci) pci_bdf_to_bus(bdf), pci_bdf_to_dev(bdf), pci_bdf_to_fn(bdf), iobase); + pci_config_maskw(bdf, PCI_COMMAND, 0, PCI_COMMAND_MASTER); + // reset outb(ESP_CMD_RESET, iobase + ESP_CMD);