drm/i915: add Punit read/write routines for VLV v2

Slightly different than other platforms.

v2 [Jani]: Fix IOSF_BYTE_ENABLES_SHIFT shift. Use common routine.
v3: drop turbo defines from this patch (Ville)
    use PCI_DEVFN(2,0) instead of open coding (Ville)

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
[danvet: Add checkpatch bikeshed about missing space.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 37663696a56b..058686c0dbbf 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4381,6 +4381,20 @@
 #define GEN6_PCODE_DATA                         0x138128
 #define   GEN6_PCODE_FREQ_IA_RATIO_SHIFT        8
 
+#define VLV_IOSF_DOORBELL_REQ                   0x182100
+#define   IOSF_DEVFN_SHIFT                      24
+#define   IOSF_OPCODE_SHIFT                     16
+#define   IOSF_PORT_SHIFT                       8
+#define   IOSF_BYTE_ENABLES_SHIFT               4
+#define   IOSF_BAR_SHIFT                        1
+#define   IOSF_SB_BUSY                          (1<<0)
+#define   IOSF_PORT_PUNIT                       0x4
+#define VLV_IOSF_DATA                           0x182104
+#define VLV_IOSF_ADDR                           0x182108
+
+#define PUNIT_OPCODE_REG_READ                   6
+#define PUNIT_OPCODE_REG_WRITE                  7
+
 #define GEN6_GT_CORE_STATUS             0x138060
 #define   GEN6_CORE_CPD_STATE_MASK      (7<<4)
 #define   GEN6_RCn_MASK                 7