compat: backport PCIe register definitions

New DRM core in 3.6 needs these in order to detect the maximum
link speed of the underlying bus.

This backports:

	commit cdcac9cd7741af2c2b9255cbf060f772596907bb
	Author: Dave Airlie <airlied@redhat.com>
	Date:   Wed Jun 27 08:35:52 2012 +0100

	    pci_regs: define LNKSTA2 pcie cap + bits.

	    We need these for detecting the max link speed for drm drivers.

	    Acked-by: Bjorn Helgaas <bhelgass@google.com>
	    Signed-off-by: Dave Airlie <airlied@redhat.com>
[root@ozan linux-2.6]# git describe --contains cdcac9cd
v3.6-rc1~83^2~26

Trying kernel 3.5.0-030500-generic [OK]
Trying kernel 3.4.4-030404-generic [OK]
Trying kernel 3.3.7-030307-generic [OK]
Trying kernel 3.2.2-030202-generic [OK]
Trying kernel 3.1.10-030110-generic [OK]
Trying kernel 3.0.18-030018-generic [OK]
Trying kernel 2.6.39-02063904-generic [OK]
Trying kernel 2.6.38-02063808-generic [OK]
Trying kernel 2.6.37-02063706-generic [OK]
Trying kernel 2.6.36-02063604-generic [OK]
Trying kernel 2.6.35-02063512-generic [OK]
Trying kernel 2.6.34-02063410-generic [OK]
Trying kernel 2.6.33-02063305-generic [OK]
Trying kernel 2.6.32-02063255-generic [OK]
Trying kernel 2.6.31-02063113-generic [OK]
Trying kernel 2.6.30-02063010-generic [OK]
Trying kernel 2.6.29-02062906-generic [OK]
Trying kernel 2.6.28-02062810-generic [OK]
Trying kernel 2.6.27-020627-generic [OK]
Trying kernel 2.6.26-020626-generic [OK]
Trying kernel 2.6.25-020625-generic [OK]
Trying kernel 2.6.24-020624-generic [OK]

Signed-off-by: Ozan Çağlayan <ozancag@gmail.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@frijolero.org>

diff --git a/include/linux/compat-3.6.h b/include/linux/compat-3.6.h
index 0b36ca0090cbeacaeb379a38a33f3c49938ab4a9..466975bb1eb8573db1c7be5245042a2ee8632957 100644 (file)
--- a/include/linux/compat-3.6.h
+++ b/include/linux/compat-3.6.h
@@ -5,6 +5,27 @@
 
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,6,0))
 
+/**
+ * Backports
+ *
+ * commit cdcac9cd7741af2c2b9255cbf060f772596907bb
+ * Author: Dave Airlie <airlied@redhat.com>
+ * Date:   Wed Jun 27 08:35:52 2012 +0100
+ *
+ *     pci_regs: define LNKSTA2 pcie cap + bits.
+ *
+ *     We need these for detecting the max link speed for drm drivers.
+ *
+ *     Acked-by: Bjorn Helgaas <bhelgass@google.com>
+ *     Signed-off-by: Dave Airlie <airlied@redhat.com>
+ */
+
+#define  PCI_EXP_LNKCAP2               44      /* Link Capability 2 */
+#define  PCI_EXP_LNKCAP2_SLS_2_5GB     0x01    /* Current Link Speed 2.5GT/s */
+#define  PCI_EXP_LNKCAP2_SLS_5_0GB     0x02    /* Current Link Speed 5.0GT/s */
+#define  PCI_EXP_LNKCAP2_SLS_8_0GB     0x04    /* Current Link Speed 8.0GT/s */
+#define  PCI_EXP_LNKCAP2_CROSSLINK     0x100 /* Crosslink supported */
+
 #include <net/genetlink.h>
 #include <linux/etherdevice.h>