Commit c17c2f89 authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt Committed by Dave Airlie
Browse files

drm: Fix support for PCI domains 



(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: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent c3b6ef86

drivers/gpu/drm/drm_ioctl.c

+1 −0
Original line number Diff line number Diff line
@@ -392,6 +392,7 @@ 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

			 */

			retcode = drm_set_busid(dev, file_priv);

			if (retcode)

include/drm/drmP.h

+16 −6
Original line number Diff line number Diff line
@@ -1075,7 +1075,6 @@ static __inline__ int drm_core_check_feature(struct drm_device *dev, 
	return ((dev->driver->driver_features & feature) ? 1 : 0);

}





static inline int drm_dev_to_irq(struct drm_device *dev)

{

	if (drm_core_check_feature(dev, DRIVER_USE_PLATFORM_DEVICE))
@@ -1084,11 +1083,22 @@ static inline int drm_dev_to_irq(struct drm_device *dev) 
		return dev->pdev->irq;

}



#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)

{

	if (drm_core_check_feature(dev, DRIVER_USE_PLATFORM_DEVICE))

		return 0;



#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)

include/drm/drm_core.h

+1 −1
Original line number Diff line number Diff line
@@ -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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