On Tue, Nov 22, 2016 at 09:26:21PM +0100, Mark Kettenis wrote:
> > Date: Sat, 19 Nov 2016 19:27:25 +1100
> > From: Jonathan Gray <j...@jsg.id.au>
> >
> > To pull pci information from the kernel for drm devices we need a common
> > drm ioctl. This is a requirement for implementing functions in libdrm
> > which are used by Mesa >= 13.
> >
> > To not clash with drm headers this is added via pciio.h at kettenis'
> > suggestion.
> >
> > The ioctl number reuses that of DRM_IOCTL_ADD_MAP, a DRI1 ioctl
> > we dropped support for, to avoid using a number that might be later
> > used in linux.
>
> Sorry for dropping the ball on this. My original thought was that we
> would have a 'p' ioctl instead of a 'd' ioctl with a name that is more
> in line with the existing ioctls in <sys/pciio.h>. Having a #define
> for DRM_IOCTL_GET_PCIINFO in <sys/pciio.h> feels wrong.
>
> Looking at your diffs, I wonder if we shouldn't just add the
> DRM_IOCTL_GET_PCIINFO define to <dev/pci/drm/drm.h> for the kernel,
> and put a copy (protectected by #ifdef __OpenBSD__) in
> libdrm/xf86drm.c.
Sure, updated diff
Index: drm.h
===================================================================
RCS file: /cvs/src/sys/dev/pci/drm/drm.h,v
retrieving revision 1.20
diff -u -p -r1.20 drm.h
--- drm.h 23 Sep 2015 23:12:11 -0000 1.20
+++ drm.h 23 Nov 2016 00:30:50 -0000
@@ -706,6 +706,20 @@ struct drm_event_vblank {
u_int32_t reserved;
};
+#ifdef __OpenBSD__
+struct drm_pciinfo {
+ uint16_t domain;
+ uint8_t bus;
+ uint8_t dev;
+ uint8_t func;
+ uint16_t vendor_id;
+ uint16_t device_id;
+ uint16_t subvendor_id;
+ uint16_t subdevice_id;
+ uint8_t revision_id;
+};
+#endif
+
#include "drm_mode.h"
#define DRM_IOCTL_BASE 'd'
@@ -734,7 +748,11 @@ struct drm_event_vblank {
#define DRM_IOCTL_BLOCK DRM_IOWR(0x12, struct drm_block)
#define DRM_IOCTL_UNBLOCK DRM_IOWR(0x13, struct drm_block)
#define DRM_IOCTL_CONTROL DRM_IOW( 0x14, struct drm_control)
+#ifdef __OpenBSD__
+#define DRM_IOCTL_GET_PCIINFO DRM_IOR( 0x15, struct drm_pciinfo)
+#else
#define DRM_IOCTL_ADD_MAP DRM_IOWR(0x15, struct drm_map)
+#endif
#define DRM_IOCTL_ADD_BUFS DRM_IOWR(0x16, struct drm_buf_desc)
#define DRM_IOCTL_MARK_BUFS DRM_IOW( 0x17, struct drm_buf_desc)
#define DRM_IOCTL_INFO_BUFS DRM_IOWR(0x18, struct drm_buf_info)
Index: drm_drv.c
===================================================================
RCS file: /cvs/src/sys/dev/pci/drm/drm_drv.c,v
retrieving revision 1.149
diff -u -p -r1.149 drm_drv.c
--- drm_drv.c 15 Sep 2016 02:00:17 -0000 1.149
+++ drm_drv.c 23 Nov 2016 00:30:51 -0000
@@ -81,6 +81,7 @@ int drm_version(struct drm_device *, vo
int drm_setversion(struct drm_device *, void *, struct drm_file *);
int drm_getmagic(struct drm_device *, void *, struct drm_file *);
int drm_authmagic(struct drm_device *, void *, struct drm_file *);
+int drm_getpciinfo(struct drm_device *, void *, struct drm_file *);
int drm_file_cmp(struct drm_file *, struct drm_file *);
SPLAY_PROTOTYPE(drm_file_tree, drm_file, link, drm_file_cmp);
@@ -120,6 +121,8 @@ static struct drm_ioctl_desc drm_ioctls[
DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx,
DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
#else
+ DRM_IOCTL_DEF(DRM_IOCTL_GET_PCIINFO, drm_getpciinfo,
DRM_UNLOCKED|DRM_RENDER_ALLOW),
+
DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_noop,
DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_noop, DRM_AUTH),
#endif
@@ -1345,5 +1348,23 @@ int drm_pcie_get_speed_cap_mask(struct d
DRM_INFO("probing gen 2 caps for device 0x%04x:0x%04x = %x/%x\n",
PCI_VENDOR(id), PCI_PRODUCT(id), lnkcap, lnkcap2);
+ return 0;
+}
+
+int
+drm_getpciinfo(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+ struct drm_pciinfo *info = data;
+
+ info->domain = 0;
+ info->bus = dev->pdev->bus->number;
+ info->dev = PCI_SLOT(dev->pdev->devfn);
+ info->func = PCI_FUNC(dev->pdev->devfn);
+ info->vendor_id = dev->pdev->vendor;
+ info->device_id = dev->pdev->device;
+ info->subvendor_id = dev->pdev->subsystem_vendor;
+ info->subdevice_id = dev->pdev->subsystem_device;
+ info->revision_id = 0;
+
return 0;
}
