drm/i915: Stop using I915_TILING_* in client blit selftest

The I915_TILING_* definitions in the uapi header are intended solely for
tiling modes that are visible to the old de-tiling fence ioctls.  Since
modern hardware does not support de-tiling fences, we should not add new
definitions for new tiling types going forward.  However we do want the
client blit selftest to eventually cover other new tiling modes (such as
Tile4), so switch it to using its own enum of tiling modes.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211001005816.73330-1-matthew.d.roper@intel.com

drivers/gpu/drm/i915/gem/selftests/i915_gem_client_blt.c

@@ -17,13 +17,20 @@
 #include "huge_gem_object.h"
 #include "mock_context.h"
 
+enum client_tiling {
+	CLIENT_TILING_LINEAR,
+	CLIENT_TILING_X,
+	CLIENT_TILING_Y,
+	CLIENT_NUM_TILING_TYPES
+};
+
 #define WIDTH 512
 #define HEIGHT 32
 
 struct blit_buffer {
 	struct i915_vma *vma;
 	u32 start_val;
-	u32 tiling;
+	enum client_tiling tiling;
 };
 
 struct tiled_blits {
@@ -53,9 +60,9 @@ static int prepare_blit(const struct tiled_blits *t,
 	*cs++ = MI_LOAD_REGISTER_IMM(1);
 	*cs++ = i915_mmio_reg_offset(BCS_SWCTRL);
 	cmd = (BCS_SRC_Y | BCS_DST_Y) << 16;
-	if (src->tiling == I915_TILING_Y)
+	if (src->tiling == CLIENT_TILING_Y)
 		cmd |= BCS_SRC_Y;
-	if (dst->tiling == I915_TILING_Y)
+	if (dst->tiling == CLIENT_TILING_Y)
 		cmd |= BCS_DST_Y;
 	*cs++ = cmd;
 
@@ -172,7 +179,7 @@ static int tiled_blits_create_buffers(struct tiled_blits *t,
 
 		t->buffers[i].vma = vma;
 		t->buffers[i].tiling =
-			i915_prandom_u32_max_state(I915_TILING_Y + 1, prng);
+			i915_prandom_u32_max_state(CLIENT_TILING_Y + 1, prng);
 	}
 
 	return 0;
@@ -197,17 +204,17 @@ static u64 swizzle_bit(unsigned int bit, u64 offset)
 static u64 tiled_offset(const struct intel_gt *gt,
 			u64 v,
 			unsigned int stride,
-			unsigned int tiling)
+			enum client_tiling tiling)
 {
 	unsigned int swizzle;
 	u64 x, y;
 
-	if (tiling == I915_TILING_NONE)
+	if (tiling == CLIENT_TILING_LINEAR)
 		return v;
 
 	y = div64_u64_rem(v, stride, &x);
 
-	if (tiling == I915_TILING_X) {
+	if (tiling == CLIENT_TILING_X) {
 		v = div64_u64_rem(y, 8, &y) * stride * 8;
 		v += y * 512;
 		v += div64_u64_rem(x, 512, &x) << 12;
@@ -244,12 +251,12 @@ static u64 tiled_offset(const struct intel_gt *gt,
 	return v;
 }
 
-static const char *repr_tiling(int tiling)
+static const char *repr_tiling(enum client_tiling tiling)
 {
 	switch (tiling) {
-	case I915_TILING_NONE: return "linear";
-	case I915_TILING_X: return "X";
-	case I915_TILING_Y: return "Y";
+	case CLIENT_TILING_LINEAR: return "linear";
+	case CLIENT_TILING_X: return "X";
+	case CLIENT_TILING_Y: return "Y";
 	default: return "unknown";
 	}
 }