svn commit: r189672 - in stable/7/sys: . contrib/pf dev/ath/ath_hal
dev/cxgb dev/drm
Robert Noland
rnoland at FreeBSD.org
Tue Mar 10 19:37:53 PDT 2009
Author: rnoland
Date: Wed Mar 11 02:37:52 2009
New Revision: 189672
URL: http://svn.freebsd.org/changeset/base/189672
Log:
Merge r189128
Add a tuneable to allow disabling msi on drm at runtime.
Modified:
stable/7/sys/ (props changed)
stable/7/sys/contrib/pf/ (props changed)
stable/7/sys/dev/ath/ath_hal/ (props changed)
stable/7/sys/dev/cxgb/ (props changed)
stable/7/sys/dev/drm/drm_drv.c
Modified: stable/7/sys/dev/drm/drm_drv.c
==============================================================================
--- stable/7/sys/dev/drm/drm_drv.c Wed Mar 11 02:36:20 2009 (r189671)
+++ stable/7/sys/dev/drm/drm_drv.c Wed Mar 11 02:37:52 2009 (r189672)
@@ -134,6 +134,9 @@ static struct cdevsw drm_cdevsw = {
.d_flags = D_TRACKCLOSE
};
+int drm_msi = 1; /* Enable by default. */
+TUNABLE_INT("hw.drm.msi", &drm_msi);
+
static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
{0x8086, 0x2772}, /* Intel i945G */ \
{0x8086, 0x27A2}, /* Intel i945GM */ \
@@ -222,7 +225,8 @@ int drm_attach(device_t nbdev, drm_pci_i
dev->pci_vendor = pci_get_vendor(dev->device);
dev->pci_device = pci_get_device(dev->device);
- if (!drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) {
+ if (drm_msi &&
+ !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) {
msicount = pci_msi_count(dev->device);
DRM_DEBUG("MSI count = %d\n", msicount);
if (msicount > 1)
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