drm/i915: move and rename reg_in_range_table

reg_in_range_table is a useful function that is used in multiple places,
and will be needed for WA_BB implementation later.

Let's move this function and i915_range struct to its own file, as we are
trying to move away from i915_utils files.

v2: move functions to their own file
v3: use correct naming convention

Suggested-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Matt Atwood <matthew.s.atwood@intel.com>
Link:
https://lore.kernel.org/r/20251009215210.41000-1-matthew.s.atwood@intel.com
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_mmio_range.c b/drivers/gpu/drm/i915/i915_mmio_range.c
new file mode 100644
index 000000000000..724041e81aa7
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_mmio_range.c
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2025 Intel Corporation
+ */
+
+#include "i915_mmio_range.h"
+
+bool i915_mmio_range_table_contains(u32 addr, const struct i915_mmio_range *table)
+{
+	while (table->start || table->end) {
+		if (addr >= table->start && addr <= table->end)
+			return true;
+
+		table++;
+	}
+
+	return false;
+}