(For some reason I thought that went in ages ago ...)
This fixes support for PCI domains in what should hopefully be a backward
compatible way along with a change to libdrm.
When the interface version is set to 1.4, we assume userspace understands
domains and the world is at peace. We thus pass proper domain numbers
instead of 0 to userspace.
The newer libdrm will then try 1.4 first, and fallback to 1.1, along with
ignoring domains in the later case (well, except on alpha of course)
Signed-off-by: Benjamin Herrenschmidt <b...@kernel.crashing.org>
---
drivers/gpu/drm/drm_ioctl.c | 1 +
include/drm/drmP.h | 18 +++++++++++++-----
include/drm/drm_core.h | 2 +-
3 files changed, 15 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
index 9b9ff46..d7b2bd6 100644
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -322,6 +322,7 @@ int drm_setversion(struct drm_device *dev, void *data,
struct drm_file *file_pri
if (sv->drm_di_minor >= 1) {
/*
* Version 1.1 includes tying of DRM to specific device
+ * Version 1.4 has proper PCI domain support
*/
drm_set_busid(dev, file_priv);
}
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index c1b9871..6d4bad5 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1071,11 +1071,19 @@ static __inline__ int drm_core_check_feature(struct
drm_device *dev,
return ((dev->driver->driver_features & feature) ? 1 : 0);
}
-#ifdef __alpha__
-#define drm_get_pci_domain(dev) dev->hose->index
-#else
-#define drm_get_pci_domain(dev) 0
-#endif
+static inline int drm_get_pci_domain(struct drm_device *dev)
+{
+#ifndef __alpha__
+ /* For historical reasons, drm_get_pci_domain() is busticated
+ * on most archs and has to remain so for userspace interface
+ * < 1.4, except on alpha which was right from the beginning
+ */
+ if (dev->if_version < 0x10004)
+ return 0;
+#endif /* __alpha__ */
+
+ return pci_domain_nr(dev->pdev->bus);
+}
#if __OS_HAS_AGP
static inline int drm_core_has_AGP(struct drm_device *dev)
diff --git a/include/drm/drm_core.h b/include/drm/drm_core.h
index 3167390..4e75238 100644
--- a/include/drm/drm_core.h
+++ b/include/drm/drm_core.h
@@ -27,7 +27,7 @@
#define CORE_DATE "20060810"
#define DRM_IF_MAJOR 1
-#define DRM_IF_MINOR 3
+#define DRM_IF_MINOR 4
#define CORE_MAJOR 1
#define CORE_MINOR 1
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