drm/i915: split out i915_reg_read_ioctl() to i915_ioctl.[ch]

Add new files i915_ioctl.[ch] to hold small ioctls that are out of place
everywhere else, and not big enough to warrant a file of their own. For
starters, it's just for i915_reg_read_ioctl() that's a bit high level
for a low level implementation that intel_uncore.[ch] is.

Suggested-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220120113346.3214745-1-jani.nikula@intel.com

1 files changed, 0 insertions, 70 deletions

diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index fefaf63dfb88..703061e8be51 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -2265,76 +2265,6 @@ void intel_uncore_fini_mmio(struct intel_uncore *uncore)
 	uncore_mmio_cleanup(uncore);
 }
 
-static const struct reg_whitelist {
-	i915_reg_t offset_ldw;
-	i915_reg_t offset_udw;
-	u8 min_graphics_ver;
-	u8 max_graphics_ver;
-	u8 size;
-} reg_read_whitelist[] = { {
-	.offset_ldw = RING_TIMESTAMP(RENDER_RING_BASE),
-	.offset_udw = RING_TIMESTAMP_UDW(RENDER_RING_BASE),
-	.min_graphics_ver = 4,
-	.max_graphics_ver = 12,
-	.size = 8
-} };
-
-int i915_reg_read_ioctl(struct drm_device *dev,
-			void *data, struct drm_file *file)
-{
-	struct drm_i915_private *i915 = to_i915(dev);
-	struct intel_uncore *uncore = &i915->uncore;
-	struct drm_i915_reg_read *reg = data;
-	struct reg_whitelist const *entry;
-	intel_wakeref_t wakeref;
-	unsigned int flags;
-	int remain;
-	int ret = 0;
-
-	entry = reg_read_whitelist;
-	remain = ARRAY_SIZE(reg_read_whitelist);
-	while (remain) {
-		u32 entry_offset = i915_mmio_reg_offset(entry->offset_ldw);
-
-		GEM_BUG_ON(!is_power_of_2(entry->size));
-		GEM_BUG_ON(entry->size > 8);
-		GEM_BUG_ON(entry_offset & (entry->size - 1));
-
-		if (IS_GRAPHICS_VER(i915, entry->min_graphics_ver, entry->max_graphics_ver) &&
-		    entry_offset == (reg->offset & -entry->size))
-			break;
-		entry++;
-		remain--;
-	}
-
-	if (!remain)
-		return -EINVAL;
-
-	flags = reg->offset & (entry->size - 1);
-
-	with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
-		if (entry->size == 8 && flags == I915_REG_READ_8B_WA)
-			reg->val = intel_uncore_read64_2x32(uncore,
-							    entry->offset_ldw,
-							    entry->offset_udw);
-		else if (entry->size == 8 && flags == 0)
-			reg->val = intel_uncore_read64(uncore,
-						       entry->offset_ldw);
-		else if (entry->size == 4 && flags == 0)
-			reg->val = intel_uncore_read(uncore, entry->offset_ldw);
-		else if (entry->size == 2 && flags == 0)
-			reg->val = intel_uncore_read16(uncore,
-						       entry->offset_ldw);
-		else if (entry->size == 1 && flags == 0)
-			reg->val = intel_uncore_read8(uncore,
-						      entry->offset_ldw);
-		else
-			ret = -EINVAL;
-	}
-
-	return ret;
-}
-
 /**
  * __intel_wait_for_register_fw - wait until register matches expected state
  * @uncore: the struct intel_uncore