drm/i915: extract intel_uncore_trace.[ch]

The i915_reg_rw tracing is a small isolated part of i915_trace.h. Its
users are orthogonal to the other i915_trace.h users as well, and its
implementation does not require all the includes of i915_trace.h. Split
i915_reg_rw tracing to separate intel_uncore_trace.[ch].

The main underlying goal is to reduce implicit includes of i915_drv.h
from display code.

Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1a3623fbb120adc55bc1cab1e27aca6e55487163.1732104170.git.jani.nikula@intel.com

drivers/gpu/drm/i915/Makefile

@@ -43,6 +43,7 @@ i915-y += \
 	intel_sbi.o \
 	intel_step.o \
 	intel_uncore.o \
+	intel_uncore_trace.o \
 	intel_wakeref.o \
 	vlv_sideband.o \
 	vlv_suspend.o

drivers/gpu/drm/i915/display/intel_de.h

@@ -7,9 +7,9 @@
 #define __INTEL_DE_H__
 
 #include "i915_drv.h"
-#include "i915_trace.h"
 #include "intel_dsb.h"
 #include "intel_uncore.h"
+#include "intel_uncore_trace.h"
 
 static inline struct intel_uncore *__to_uncore(struct intel_display *display)
 {

drivers/gpu/drm/i915/display/intel_dp_aux.c

@@ -5,7 +5,6 @@
 
 #include "i915_drv.h"
 #include "i915_reg.h"
-#include "i915_trace.h"
 #include "intel_de.h"
 #include "intel_display_types.h"
 #include "intel_dp.h"
@@ -14,6 +13,7 @@
 #include "intel_pps.h"
 #include "intel_quirks.h"
 #include "intel_tc.h"
+#include "intel_uncore_trace.h"
 
 #define AUX_CH_NAME_BUFSIZE	6
 

drivers/gpu/drm/i915/i915_trace.h

@@ -642,34 +642,6 @@ DEFINE_EVENT(i915_request, i915_request_wait_end,
 	    TP_ARGS(rq)
 );
 
-TRACE_EVENT_CONDITION(i915_reg_rw,
-	TP_PROTO(bool write, i915_reg_t reg, u64 val, int len, bool trace),
-
-	TP_ARGS(write, reg, val, len, trace),
-
-	TP_CONDITION(trace),
-
-	TP_STRUCT__entry(
-		__field(u64, val)
-		__field(u32, reg)
-		__field(u16, write)
-		__field(u16, len)
-		),
-
-	TP_fast_assign(
-		__entry->val = (u64)val;
-		__entry->reg = i915_mmio_reg_offset(reg);
-		__entry->write = write;
-		__entry->len = len;
-		),
-
-	TP_printk("%s reg=0x%x, len=%d, val=(0x%x, 0x%x)",
-		__entry->write ? "write" : "read",
-		__entry->reg, __entry->len,
-		(u32)(__entry->val & 0xffffffff),
-		(u32)(__entry->val >> 32))
-);
-
 /**
  * DOC: i915_ppgtt_create and i915_ppgtt_release tracepoints
  *

drivers/gpu/drm/i915/intel_uncore.c

@@ -31,8 +31,8 @@
 #include "i915_drv.h"
 #include "i915_iosf_mbi.h"
 #include "i915_reg.h"
-#include "i915_trace.h"
 #include "i915_vgpu.h"
+#include "intel_uncore_trace.h"
 
 #define FORCEWAKE_ACK_TIMEOUT_MS 50
 #define GT_FIFO_TIMEOUT_MS	 10

drivers/gpu/drm/i915/intel_uncore_trace.c

@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright © 2024 Intel Corporation */
+
+#ifndef __CHECKER__
+#define CREATE_TRACE_POINTS
+#include "intel_uncore_trace.h"
+#endif

drivers/gpu/drm/i915/intel_uncore_trace.h

@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright © 2024 Intel Corporation */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM i915
+
+#if !defined(__INTEL_UNCORE_TRACE_H__) || defined(TRACE_HEADER_MULTI_READ)
+#define __INTEL_UNCORE_TRACE_H__
+
+#include "i915_reg_defs.h"
+
+#include <linux/types.h>
+#include <linux/tracepoint.h>
+
+TRACE_EVENT_CONDITION(i915_reg_rw,
+	TP_PROTO(bool write, i915_reg_t reg, u64 val, int len, bool trace),
+
+	TP_ARGS(write, reg, val, len, trace),
+
+	TP_CONDITION(trace),
+
+	TP_STRUCT__entry(
+		__field(u64, val)
+		__field(u32, reg)
+		__field(u16, write)
+		__field(u16, len)
+		),
+
+	TP_fast_assign(
+		__entry->val = (u64)val;
+		__entry->reg = i915_mmio_reg_offset(reg);
+		__entry->write = write;
+		__entry->len = len;
+		),
+
+	TP_printk("%s reg=0x%x, len=%d, val=(0x%x, 0x%x)",
+		__entry->write ? "write" : "read",
+		__entry->reg, __entry->len,
+		(u32)(__entry->val & 0xffffffff),
+		(u32)(__entry->val >> 32))
+);
+#endif /* __INTEL_UNCORE_TRACE_H__ */
+
+/* This part must be outside protection */
+#undef TRACE_INCLUDE_PATH
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_PATH ../../drivers/gpu/drm/i915
+#define TRACE_INCLUDE_FILE intel_uncore_trace
+#include <trace/define_trace.h>

drivers/gpu/drm/i915/vlv_suspend.c

@@ -13,6 +13,7 @@
 #include "i915_trace.h"
 #include "i915_utils.h"
 #include "intel_clock_gating.h"
+#include "intel_uncore_trace.h"
 #include "vlv_suspend.h"
 
 #include "gt/intel_gt_regs.h"