Author: jimharris
Date: Tue Sep 8 15:59:55 2015
New Revision: 287563
URL: https://svnweb.freebsd.org/changeset/base/287563
Log:
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().
MFC after: 3 days
Sponsored by: Intel
Modified:
head/sys/dev/isci/isci.c
Modified: head/sys/dev/isci/isci.c
==============================================================================
--- head/sys/dev/isci/isci.c Tue Sep 8 14:52:14 2015 (r287562)
+++ head/sys/dev/isci/isci.c Tue Sep 8 15:59:55 2015 (r287563)
@@ -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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