drm/i915: Only include i915_reg.h from .c files

Several of our i915 header files, have been including i915_reg.h.  This
means that any change to i915_reg.h will trigger a full rebuild of
pretty much every file of the driver, even those that don't have any
kind of register access.  Let's delete the i915_reg.h include from all
headers and add an explicit include from the .c files that truly
need the register definitions; those that need a definition of
i915_reg_t for a function definition can get it from i915_reg_defs.h
instead.

We also remove two non-register #define's (VLV_DISPLAY_BASE and
GEN12_SFC_DONE_MAX) into i915_reg_defs.h to allow us to drop the
i915_reg.h include from a couple of headers.

There's probably a lot more header dependency optimization possible, but
the changes here roughly cut the number of files compiled after 'touch
i915_reg.h' in half --- a good first step.

Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220127234334.4016964-7-matthew.d.roper@intel.com

15 files changed, 13 insertions, 6 deletions

diff --git a/drivers/gpu/drm/i915/gt/gen2_engine_cs.c b/drivers/gpu/drm/i915/gt/gen2_engine_cs.c
index e0e8d228b31f..1c82caf525c3 100644
--- a/drivers/gpu/drm/i915/gt/gen2_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/gen2_engine_cs.c
@@ -5,6 +5,7 @@
 
 #include "gen2_engine_cs.h"
 #include "i915_drv.h"
+#include "i915_reg.h"
 #include "intel_engine.h"
 #include "intel_engine_regs.h"
 #include "intel_gpu_commands.h"
diff --git a/drivers/gpu/drm/i915/gt/intel_engine.h b/drivers/gpu/drm/i915/gt/intel_engine.h
index 08559ace0ada..0e353d8c2bc8 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine.h
@@ -11,7 +11,6 @@
 #include <linux/seqlock.h>
 
 #include "i915_pmu.h"
-#include "i915_reg.h"
 #include "i915_request.h"
 #include "i915_selftest.h"
 #include "intel_engine_types.h"
diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c b/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c
index 3fd478912d7e..95c9145232f5 100644
--- a/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c
+++ b/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c
@@ -4,6 +4,7 @@
  */
 
 #include "i915_drv.h"
+#include "i915_reg.h"
 #include "i915_scatterlist.h"
 #include "i915_pvinfo.h"
 #include "i915_vgpu.h"
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c b/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c
index c7321c94b956..0db822c3b7e5 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c
@@ -4,6 +4,7 @@
  */
 
 #include "i915_drv.h"
+#include "i915_reg.h"
 #include "intel_gt.h"
 #include "intel_gt_clock_utils.h"
 #include "intel_gt_regs.h"
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c b/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c
index 47ec4b2043e8..4e448c13a64c 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c
@@ -7,6 +7,7 @@
 #include <linux/seq_file.h>
 
 #include "i915_drv.h"
+#include "i915_reg.h"
 #include "intel_gt.h"
 #include "intel_gt_clock_utils.h"
 #include "intel_gt_debugfs.h"
diff --git a/drivers/gpu/drm/i915/gt/intel_llc.c b/drivers/gpu/drm/i915/gt/intel_llc.c
index 63f18830c611..335c65758d6f 100644
--- a/drivers/gpu/drm/i915/gt/intel_llc.c
+++ b/drivers/gpu/drm/i915/gt/intel_llc.c
@@ -7,6 +7,7 @@
 #include <linux/cpufreq.h>
 
 #include "i915_drv.h"
+#include "i915_reg.h"
 #include "intel_gt.h"
 #include "intel_llc.h"
 #include "intel_pcode.h"
diff --git a/drivers/gpu/drm/i915/gt/intel_rc6.c b/drivers/gpu/drm/i915/gt/intel_rc6.c
index 5458e6606301..6df359c534fe 100644
--- a/drivers/gpu/drm/i915/gt/intel_rc6.c
+++ b/drivers/gpu/drm/i915/gt/intel_rc6.c
@@ -6,6 +6,7 @@
 #include <linux/pm_runtime.h>
 
 #include "i915_drv.h"
+#include "i915_reg.h"
 #include "i915_vgpu.h"
 #include "intel_engine_regs.h"
 #include "intel_gt.h"
diff --git a/drivers/gpu/drm/i915/gt/intel_rc6.h b/drivers/gpu/drm/i915/gt/intel_rc6.h
index e119ec4a0bcc..b6fea71afc22 100644
--- a/drivers/gpu/drm/i915/gt/intel_rc6.h
+++ b/drivers/gpu/drm/i915/gt/intel_rc6.h
@@ -6,7 +6,7 @@
 #ifndef INTEL_RC6_H
 #define INTEL_RC6_H
 
-#include "i915_reg.h"
+#include "i915_reg_defs.h"
 
 struct intel_engine_cs;
 struct intel_rc6;
diff --git a/drivers/gpu/drm/i915/gt/intel_region_lmem.c b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
index fde2dcb59809..cb5a67c98f30 100644
--- a/drivers/gpu/drm/i915/gt/intel_region_lmem.c
+++ b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
@@ -4,6 +4,7 @@
  */
 
 #include "i915_drv.h"
+#include "i915_reg.h"
 #include "intel_memory_region.h"
 #include "intel_region_lmem.h"
 #include "intel_region_ttm.h"
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds_types.h b/drivers/gpu/drm/i915/gt/intel_workarounds_types.h
index 1e873681795d..8a4b6de4e754 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds_types.h
@@ -8,7 +8,7 @@
 
 #include <linux/types.h>
 
-#include "i915_reg.h"
+#include "i915_reg_defs.h"
 
 struct i915_wa {
 	i915_reg_t	reg;
diff --git a/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_slpc_abi.h b/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_slpc_abi.h
index 7a8d4bfc5f6a..62cb4254a77a 100644
--- a/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_slpc_abi.h
+++ b/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_slpc_abi.h
@@ -7,7 +7,6 @@
 #define _GUC_ACTIONS_SLPC_ABI_H_
 
 #include <linux/types.h>
-#include "i915_reg.h"
 
 /**
  * DOC: SLPC SHARED DATA STRUCTURE
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_reg.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_reg.h
index b37fc2ffaef2..85846c5570c5 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_reg.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_reg.h
@@ -9,7 +9,7 @@
 #include <linux/compiler.h>
 #include <linux/types.h>
 
-#include "i915_reg.h"
+#include "i915_reg_defs.h"
 
 /* Definitions of GuC H/W registers, bits, etc */
 
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
index 57ae9ac98505..ddbea939b1dc 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
@@ -4,6 +4,7 @@
  */
 
 #include "i915_drv.h"
+#include "i915_reg.h"
 #include "intel_guc_slpc.h"
 #include "gt/intel_gt.h"
 #include "gt/intel_gt_regs.h"
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_huc.h b/drivers/gpu/drm/i915/gt/uc/intel_huc.h
index ae8c8a6c8cc8..73ec670800f2 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_huc.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_huc.h
@@ -6,7 +6,7 @@
 #ifndef _INTEL_HUC_H_
 #define _INTEL_HUC_H_
 
-#include "i915_reg.h"
+#include "i915_reg_defs.h"
 #include "intel_uc_fw.h"
 #include "intel_huc_fw.h"
 
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
index a5af05bde6f2..dd588ecf048a 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
@@ -11,6 +11,7 @@
 #include "intel_uc_fw.h"
 #include "intel_uc_fw_abi.h"
 #include "i915_drv.h"
+#include "i915_reg.h"
 
 static inline struct intel_gt *
 ____uc_fw_to_gt(struct intel_uc_fw *uc_fw, enum intel_uc_fw_type type)