drm/i915: Remove gen specific checks in MMIO

Now that MMIO has been split up into gen specific functions it is
obvious when HAS_FPGA_DBG_UNCLAIMED, HAS_FORCE_WAKE are needed. As such,
we can remove this extraneous condition.

As a result of this, as well as previously existing function pointers
for forcewake, we no longer need the has_force_wake member in the device
specific data structure.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

4 files changed, 12 insertions, 18 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 96f230497cbe..59649c060986 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -257,7 +257,6 @@ static const struct intel_device_info intel_sandybridge_d_info = {
         .has_bsd_ring = 1,
         .has_blt_ring = 1,
         .has_llc = 1,
-        .has_force_wake = 1,
 };
 
 static const struct intel_device_info intel_sandybridge_m_info = {
@@ -267,7 +266,6 @@ static const struct intel_device_info intel_sandybridge_m_info = {
         .has_bsd_ring = 1,
         .has_blt_ring = 1,
         .has_llc = 1,
-        .has_force_wake = 1,
 };
 
 #define GEN7_FEATURES  \
@@ -275,8 +273,7 @@ static const struct intel_device_info intel_sandybridge_m_info = {
         .need_gfx_hws = 1, .has_hotplug = 1, \
         .has_bsd_ring = 1, \
         .has_blt_ring = 1, \
-        .has_llc = 1, \
-        .has_force_wake = 1
+        .has_llc = 1
 
 static const struct intel_device_info intel_ivybridge_d_info = {
         GEN7_FEATURES,
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 957771fc60fa..9cac93c41e10 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -441,7 +441,6 @@ struct intel_uncore {
         func(is_valleyview) sep \
         func(is_haswell) sep \
         func(is_preliminary) sep \
-        func(has_force_wake) sep \
         func(has_fbc) sep \
         func(has_pipe_cxsr) sep \
         func(has_hotplug) sep \
@@ -1729,8 +1728,6 @@ struct drm_i915_file_private {
 #define HAS_PCH_NOP(dev) (INTEL_PCH_TYPE(dev) == PCH_NOP)
 #define HAS_PCH_SPLIT(dev) (INTEL_PCH_TYPE(dev) != PCH_NONE)
 
-#define HAS_FORCE_WAKE(dev) (INTEL_INFO(dev)->has_force_wake)
-
 /* DPF == dynamic parity feature */
 #define HAS_L3_DPF(dev) (IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
 #define NUM_L3_SLICES(dev) (IS_HSW_GT3(dev) ? 2 : HAS_L3_DPF(dev))
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index b67104aaade5..4e108fc3c340 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -395,8 +395,7 @@ static int init_ring_common(struct intel_ring_buffer *ring)
         int ret = 0;
         u32 head;
 
-        if (HAS_FORCE_WAKE(dev))
-                gen6_gt_force_wake_get(dev_priv);
+        gen6_gt_force_wake_get(dev_priv);
 
         if (I915_NEED_GFX_HWS(dev))
                 intel_ring_setup_status_page(ring);
@@ -469,8 +468,7 @@ static int init_ring_common(struct intel_ring_buffer *ring)
         memset(&ring->hangcheck, 0, sizeof(ring->hangcheck));
 
 out:
-        if (HAS_FORCE_WAKE(dev))
-                gen6_gt_force_wake_put(dev_priv);
+        gen6_gt_force_wake_put(dev_priv);
 
         return ret;
 }
diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index 7e8dcbeb0cac..f6fae35c568e 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -282,6 +282,9 @@ void gen6_gt_force_wake_get(struct drm_i915_private *dev_priv)
 {
         unsigned long irqflags;
 
+        if (!dev_priv->uncore.funcs.force_wake_get)
+                return;
+
         spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
         if (dev_priv->uncore.forcewake_count++ == 0)
                 dev_priv->uncore.funcs.force_wake_get(dev_priv);
@@ -295,6 +298,9 @@ void gen6_gt_force_wake_put(struct drm_i915_private *dev_priv)
 {
         unsigned long irqflags;
 
+        if (!dev_priv->uncore.funcs.force_wake_put)
+                return;
+
         spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
         if (--dev_priv->uncore.forcewake_count == 0) {
                 dev_priv->uncore.forcewake_count++;
@@ -307,9 +313,7 @@ void gen6_gt_force_wake_put(struct drm_i915_private *dev_priv)
 
 /* We give fast paths for the really cool registers */
 #define NEEDS_FORCE_WAKE(dev_priv, reg) \
-        ((HAS_FORCE_WAKE((dev_priv)->dev)) && \
-         ((reg) < 0x40000) &&            \
-         ((reg) != FORCEWAKE))
+         ((reg) < 0x40000 && (reg) != FORCEWAKE)
 
 static void
 ilk_dummy_write(struct drm_i915_private *dev_priv)
@@ -323,8 +327,7 @@ ilk_dummy_write(struct drm_i915_private *dev_priv)
 static void
 hsw_unclaimed_reg_clear(struct drm_i915_private *dev_priv, u32 reg)
 {
-        if (HAS_FPGA_DBG_UNCLAIMED(dev_priv->dev) &&
-            (__raw_i915_read32(dev_priv, FPGA_DBG) & FPGA_DBG_RM_NOCLAIM)) {
+        if (__raw_i915_read32(dev_priv, FPGA_DBG) & FPGA_DBG_RM_NOCLAIM) {
                 DRM_ERROR("Unknown unclaimed register before writing to %x\n",
                           reg);
                 __raw_i915_write32(dev_priv, FPGA_DBG, FPGA_DBG_RM_NOCLAIM);
@@ -334,8 +337,7 @@ hsw_unclaimed_reg_clear(struct drm_i915_private *dev_priv, u32 reg)
 static void
 hsw_unclaimed_reg_check(struct drm_i915_private *dev_priv, u32 reg)
 {
-        if (HAS_FPGA_DBG_UNCLAIMED(dev_priv->dev) &&
-            (__raw_i915_read32(dev_priv, FPGA_DBG) & FPGA_DBG_RM_NOCLAIM)) {
+        if (__raw_i915_read32(dev_priv, FPGA_DBG) & FPGA_DBG_RM_NOCLAIM) {
                 DRM_ERROR("Unclaimed write to %x\n", reg);
                 __raw_i915_write32(dev_priv, FPGA_DBG, FPGA_DBG_RM_NOCLAIM);
         }