Author: jimharris
Date: Fri Sep 11 17:01:01 2015
New Revision: 287677
URL: https://svnweb.freebsd.org/changeset/base/287677
Log:
MFC r287563:
isci: explicitly enable/disable PCI busmaster
BIOS always enables PCI busmaster on the isci device, which effectively
worked around this omission. But when passing the isci device through
to a guest VM, the hypervisor will disable busmaster and isci will not
work without calling pci_enable_busmaster().
Sponsored by: Intel
Modified:
stable/10/sys/dev/isci/isci.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/dev/isci/isci.c
==============================================================================
--- stable/10/sys/dev/isci/isci.c Fri Sep 11 16:59:04 2015
(r287676)
+++ stable/10/sys/dev/isci/isci.c Fri Sep 11 17:01:01 2015
(r287677)
@@ -163,6 +163,7 @@ isci_attach(device_t device)
g_isci = isci;
isci->device = device;
+ pci_enable_busmaster(device);
isci_allocate_pci_memory(isci);
@@ -272,6 +273,7 @@ isci_detach(device_t device)
pci_release_msi(device);
}
+ pci_disable_busmaster(device);
return (0);
}
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