grub2/0017-EHCI-and-OHCI-PCI-bus-master.patch

From 6054ac4ca1ce5f3e4589bfead3c9c05af89f9ace Mon Sep 17 00:00:00 2001
From: starous <starous@pracovna>
Date: Sun, 22 Jul 2012 21:09:30 +0200
Subject: [PATCH 017/482] EHCI and OHCI PCI bus master

---
 ChangeLog                | 5 +++++
 grub-core/bus/usb/ehci.c | 5 +++++
 grub-core/bus/usb/ohci.c | 5 +++++
 3 files changed, 15 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 0db6239..01d4f92 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2012-07-22  Ales Nesrsta  <starous@volny.cz>
+
+	* grub-core/bus/usb/ehci.c: PCI iter. - added PCI bus master setting.
+	* grub-core/bus/usb/ohci.c: PCI iter. - added PCI bus master setting.
+
 2012-07-22  Vladimir Serbinenko  <phcoder@gmail.com>
 
 	* util/grub-mkconfig_lib.in (grub_quote): Remove extra layer of escape.
diff --git a/grub-core/bus/usb/ehci.c b/grub-core/bus/usb/ehci.c
index b700519..d99a4be 100644
--- a/grub-core/bus/usb/ehci.c
+++ b/grub-core/bus/usb/ehci.c
@@ -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");
     }
diff --git a/grub-core/bus/usb/ohci.c b/grub-core/bus/usb/ohci.c
index 23cf631..6fabb4b 100644
--- a/grub-core/bus/usb/ohci.c
+++ b/grub-core/bus/usb/ohci.c
@@ -270,6 +270,11 @@ grub_ohci_pci_iter (grub_pci_device_t dev,
 	return 0;
 #endif
 
+      /* 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 ("ohci", "class=0x%02x 0x%02x interface 0x%02x\n",
 		    class, subclass, interf);
     }
-- 
1.8.2.1