[PATCH 3/3] drm/i915: Remove HAS_FULL_PPGTT and device_info.ppgtt enum

[Bob Paauwe <bob.j.paauwe@intel.com>]

The distincsion between aliasing, full, and 4 level ppgtt is primarily
the size of the address range. Now that we have that specified for
each platform, having a separate enum that specifies the ppgtt type is
redundant. A platform either has support for ppgtt or it doesn't.
This means we can now remove the HAS_FULL_PPGTT macro and the devcie
info ppgtt type.

However, there are still a few places where GEN 6's aliasing ppgtt
differences matter. For those cases, it makes just as much sense to
check if we're running on GEN 6 as it does to check a device info flag.

Signed-off-by: Bob Paauwe <bob.j.paauwe@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.c                 | 7 ++++++-
 drivers/gpu/drm/i915/i915_drv.h                 | 8 +++++---
 drivers/gpu/drm/i915/i915_gem_context.c         | 2 +-
 drivers/gpu/drm/i915/i915_gem_gtt.c             | 2 +-
 drivers/gpu/drm/i915/i915_pci.c                 | 6 ------
 drivers/gpu/drm/i915/intel_device_info.c        | 2 +-
 drivers/gpu/drm/i915/intel_device_info.h        | 9 +--------
 drivers/gpu/drm/i915/selftests/huge_pages.c     | 4 ++--
 drivers/gpu/drm/i915/selftests/i915_gem_evict.c | 2 +-
 drivers/gpu/drm/i915/selftests/i915_gem_gtt.c   | 2 +-
 10 files changed, 19 insertions(+), 25 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 393e89e2b309..eafb70407356 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -345,7 +345,12 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
 		value = HAS_WT(dev_priv);
 		break;
 	case I915_PARAM_HAS_ALIASING_PPGTT:
-		value = min_t(int, INTEL_PPGTT(dev_priv), I915_GEM_PPGTT_FULL);
+		if (INTEL_GEN(dev_priv) < 6)
+			value = I915_GEM_PPGTT_NONE;
+		else if (IS_GEN6(dev_priv))
+			value = I915_GEM_PPGTT_ALIASING;
+		else
+			value = I915_GEM_PPGTT_FULL;
 		break;
 	case I915_PARAM_HAS_SEMAPHORES:
 		value = HAS_LEGACY_SEMAPHORES(dev_priv);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 5b104dad75d8..3acdda232ea1 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2582,11 +2582,13 @@ intel_info(const struct drm_i915_private *dev_priv)
 
 #define HAS_EXECLISTS(dev_priv) HAS_LOGICAL_RING_CONTEXTS(dev_priv)
 
-#define INTEL_PPGTT(dev_priv) (INTEL_INFO(dev_priv)->ppgtt)
+#define INTEL_PPGTT_BITS(dev_priv) (INTEL_INFO(dev_priv)->ppgtt_bits)
 #define HAS_PPGTT(dev_priv) \
-	(INTEL_PPGTT(dev_priv) != INTEL_PPGTT_NONE)
+	(INTEL_PPGTT_BITS(dev_priv) != 0)
+/*
 #define HAS_FULL_PPGTT(dev_priv) \
-	(INTEL_PPGTT(dev_priv) >= INTEL_PPGTT_FULL)
+	(INTEL_PPGTT_BITS(dev_priv) >= 31)
+*/
 
 #define HAS_PAGE_SIZES(dev_priv, sizes) ({ \
 	GEM_BUG_ON((sizes) == 0); \
diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index 1853e82cebd5..7bab4754b20c 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -414,7 +414,7 @@ i915_gem_create_context(struct drm_i915_private *dev_priv,
 	if (IS_ERR(ctx))
 		return ctx;
 
-	if (HAS_FULL_PPGTT(dev_priv)) {
+	if (INTEL_GEN(dev_priv) > 6) {
 		struct i915_hw_ppgtt *ppgtt;
 
 		ppgtt = i915_ppgtt_create(dev_priv, file_priv);
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index e818d3c00bba..1272f7d9e915 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -2861,7 +2861,7 @@ int i915_gem_init_ggtt(struct drm_i915_private *dev_priv)
 	/* And finally clear the reserved guard page */
 	ggtt->vm.clear_range(&ggtt->vm, ggtt->vm.total - PAGE_SIZE, PAGE_SIZE);
 
-	if (INTEL_PPGTT(dev_priv) == INTEL_PPGTT_ALIASING) {
+	if (IS_GEN6(dev_priv)) {
 		ret = i915_gem_init_aliasing_ppgtt(dev_priv);
 		if (ret)
 			goto err;
diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c
index fac4c69cb5db..76d3c96733b0 100644
--- a/drivers/gpu/drm/i915/i915_pci.c
+++ b/drivers/gpu/drm/i915/i915_pci.c
@@ -252,7 +252,6 @@ static const struct intel_device_info intel_ironlake_m_info = {
 	.has_llc = 1, \
 	.has_rc6 = 1, \
 	.has_rc6p = 1, \
-	.ppgtt = INTEL_PPGTT_ALIASING, \
 	.ppgtt_bits = 31, \
 	GEN_DEFAULT_PIPEOFFSETS, \
 	GEN_DEFAULT_PAGE_SIZES, \
@@ -298,7 +297,6 @@ static const struct intel_device_info intel_sandybridge_m_gt2_info = {
 	.has_llc = 1, \
 	.has_rc6 = 1, \
 	.has_rc6p = 1, \
-	.ppgtt = INTEL_PPGTT_FULL, \
 	.ppgtt_bits = 31, \
 	GEN_DEFAULT_PIPEOFFSETS, \
 	GEN_DEFAULT_PAGE_SIZES, \
@@ -352,7 +350,6 @@ static const struct intel_device_info intel_valleyview_info = {
 	.has_rc6 = 1,
 	.has_gmch_display = 1,
 	.has_hotplug = 1,
-	.ppgtt = INTEL_PPGTT_FULL,
 	.ppgtt_bits = 31,
 	.has_snoop = true,
 	.has_coherent_ggtt = false,
@@ -400,7 +397,6 @@ static const struct intel_device_info intel_haswell_gt3_info = {
 	.page_sizes = I915_GTT_PAGE_SIZE_4K | \
 		      I915_GTT_PAGE_SIZE_2M, \
 	.has_logical_ring_contexts = 1, \
-	.ppgtt = INTEL_PPGTT_FULL, \
 	.ppgtt_bits = 48, \
 	.has_64bit_reloc = 1, \
 	.has_reset_engine = 1
@@ -445,7 +441,6 @@ static const struct intel_device_info intel_cherryview_info = {
 	.has_rc6 = 1,
 	.has_logical_ring_contexts = 1,
 	.has_gmch_display = 1,
-	.ppgtt = INTEL_PPGTT_FULL,
 	.ppgtt_bits = 32,
 	.has_reset_engine = 1,
 	.has_snoop = true,
@@ -522,7 +517,6 @@ static const struct intel_device_info intel_skylake_gt4_info = {
 	.has_logical_ring_contexts = 1, \
 	.has_logical_ring_preemption = 1, \
 	.has_guc = 1, \
-	.ppgtt = INTEL_PPGTT_FULL, \
 	.ppgtt_bits = 48, \
 	.has_reset_engine = 1, \
 	.has_snoop = true, \
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index 3e873c2e0220..570fc4720b10 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -857,7 +857,7 @@ void intel_device_info_runtime_init(struct intel_device_info *info)
 
 	if (IS_GEN6(dev_priv) && intel_vtd_active()) {
 		DRM_INFO("Disabling ppGTT for VT-d support\n");
-		info->ppgtt = INTEL_PPGTT_NONE;
+		info->ppgtt_bits = 0;
 	}
 
 	/* Initialize command stream timestamp frequency */
diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h
index dc60be4b1435..a7f29cf098d9 100644
--- a/drivers/gpu/drm/i915/intel_device_info.h
+++ b/drivers/gpu/drm/i915/intel_device_info.h
@@ -76,12 +76,6 @@ enum intel_platform {
 	INTEL_MAX_PLATFORMS
 };
 
-enum intel_ppgtt {
-	INTEL_PPGTT_NONE = I915_GEM_PPGTT_NONE,
-	INTEL_PPGTT_ALIASING = I915_GEM_PPGTT_ALIASING,
-	INTEL_PPGTT_FULL = I915_GEM_PPGTT_FULL,
-};
-
 #define DEV_INFO_FOR_EACH_FLAG(func) \
 	func(is_mobile); \
 	func(is_lp); \
@@ -159,7 +153,6 @@ struct intel_device_info {
 	enum intel_platform platform;
 	u32 platform_mask;
 
-	enum intel_ppgtt ppgtt;
 	unsigned int page_sizes; /* page sizes supported by the HW */
 
 	u32 display_mmio_offset;
@@ -189,7 +182,7 @@ struct intel_device_info {
 		u16 gamma_lut_size;
 	} color;
 
-	/* Full PPGTT address range size */
+	/* PPGTT address range size in number of bits */
 	int ppgtt_bits;
 };
 
diff --git a/drivers/gpu/drm/i915/selftests/huge_pages.c b/drivers/gpu/drm/i915/selftests/huge_pages.c
index 95abf8475464..11973452fed6 100644
--- a/drivers/gpu/drm/i915/selftests/huge_pages.c
+++ b/drivers/gpu/drm/i915/selftests/huge_pages.c
@@ -1696,8 +1696,8 @@ int i915_gem_huge_page_mock_selftests(void)
 	if (!dev_priv)
 		return -ENOMEM;
 
-	/* Pretend to be a device which supports the 48b PPGTT */
-	mkwrite_device_info(dev_priv)->ppgtt = INTEL_PPGTT_FULL;
+	/* Pretend to be a device which supports the 63b PPGTT */
+	mkwrite_device_info(dev_priv)->ppgtt_bits = 63;
 
 	pdev = dev_priv->drm.pdev;
 	dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(39));
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
index 4365979d8222..e63ee21c2317 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
@@ -351,7 +351,7 @@ static int igt_evict_contexts(void *arg)
 	 * where the GTT space of the request is separate from the GGTT
 	 * allocation required to build the request.
 	 */
-	if (!HAS_FULL_PPGTT(i915))
+	if (INTEL_GEN(i915) <= 6)
 		return 0;
 
 	mutex_lock(&i915->drm.struct_mutex);
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
index 17b5aaaa7a50..af7309aee610 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
@@ -1001,7 +1001,7 @@ static int exercise_ppgtt(struct drm_i915_private *dev_priv,
 	IGT_TIMEOUT(end_time);
 	int err;
 
-	if (!HAS_FULL_PPGTT(dev_priv))
+	if (INTEL_GEN(dev_priv) <= 6)
 		return 0;
 
 	file = mock_file(dev_priv);
-- 
2.17.1

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