drm/xe: Do not spread i915_reg_defs.h include

Reduce the use of i915_reg_defs.h so it can be encapsulated in a single
place.

1) If it was being included by mistake, remove
2) If it was included for FIELD_GET()/FIELD_PREP()/GENMASK() and the
   like, just include <linux/bitfield.h>
3) If it was included to be able to define additional registers, move
   the registers to the relavant headers (regs/xe_regs.h or
   regs/xe_gt_regs.h)

v2:
  - Squash commit fixing i915_reg_defs.h include and with the one
    introducing regs/xe_reg_defs.h
  - Remove more cases of i915_reg_defs.h being used when all it was
    needed was linux/bitfield.h  (Matt Roper)
  - Move some  registers to the corresponding regs/*.h file (Matt Roper)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
[Rodrigo squashed here the removal of the i915 include]

drivers/gpu/drm/xe/Makefile

@@ -100,9 +100,6 @@ xe-y += xe_bb.o \
 	xe_wa.o \
 	xe_wopcm.o
 
-# XXX: Needed for i915 register definitions. Will be removed after xe-regs.
-subdir-ccflags-y += -I$(srctree)/drivers/gpu/drm/i915/
-
 obj-$(CONFIG_DRM_XE) += xe.o
 obj-$(CONFIG_DRM_XE_KUNIT_TEST) += tests/
 \

drivers/gpu/drm/xe/regs/xe_engine_regs.h

@@ -8,7 +8,7 @@
 
 #include <asm/page.h>
 
-#include "i915_reg_defs.h"
+#include "regs/xe_reg_defs.h"
 
 #define RING_TAIL(base)				_MMIO((base) + 0x30)
 

drivers/gpu/drm/xe/regs/xe_gt_regs.h

@@ -6,7 +6,7 @@
 #ifndef _XE_GT_REGS_H_
 #define _XE_GT_REGS_H_
 
-#include "i915_reg_defs.h"
+#include "regs/xe_reg_defs.h"
 
 /* RPM unit config (Gen8+) */
 #define RPM_CONFIG0				_MMIO(0xd00)
@@ -108,6 +108,12 @@
 #define   GEN11_GT_VEBOX_DISABLE_SHIFT		16
 #define   GEN11_GT_VEBOX_DISABLE_MASK		(0x0f << GEN11_GT_VEBOX_DISABLE_SHIFT)
 
+#define XELP_EU_ENABLE				_MMIO(0x9134)	/* "_DISABLE" on Xe_LP */
+#define   XELP_EU_MASK				REG_GENMASK(7, 0)
+#define XELP_GT_GEOMETRY_DSS_ENABLE		_MMIO(0x913c)
+#define XEHP_GT_COMPUTE_DSS_ENABLE		_MMIO(0x9144)
+#define XEHPC_GT_COMPUTE_DSS_ENABLE_EXT		_MMIO(0x9148)
+
 #define GEN6_GDRST				_MMIO(0x941c)
 #define   GEN11_GRDOM_GUC			REG_BIT(3)
 #define   GEN6_GRDOM_FULL			(1 << 0)

drivers/gpu/drm/xe/regs/xe_reg_defs.h

+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#ifndef _XE_REG_DEFS_H_
+#define _XE_REG_DEFS_H_
+
+#include "../../i915/i915_reg_defs.h"
+
+#endif

drivers/gpu/drm/xe/regs/xe_regs.h

@@ -5,7 +5,7 @@
 #ifndef _XE_REGS_H_
 #define _XE_REGS_H_
 
-#include "i915_reg_defs.h"
+#include "regs/xe_reg_defs.h"
 
 #define GU_CNTL					_MMIO(0x101010)
 #define   LMEM_INIT				REG_BIT(7)
@@ -70,6 +70,8 @@
 #define PIPE_DSI0_OFFSET			0x7b000
 #define PIPE_DSI1_OFFSET			0x7b800
 
+#define SOFTWARE_FLAGS_SPR33			_MMIO(0x4f084)
+
 #define GEN8_PCU_ISR				_MMIO(0x444e0)
 #define GEN8_PCU_IMR				_MMIO(0x444e4)
 #define GEN8_PCU_IIR				_MMIO(0x444e8)

drivers/gpu/drm/xe/xe_device.c

@@ -12,6 +12,7 @@
 #include <drm/drm_managed.h>
 #include <drm/xe_drm.h>
 
+#include "regs/xe_regs.h"
 #include "xe_bo.h"
 #include "xe_debugfs.h"
 #include "xe_dma_buf.h"
@@ -335,8 +336,6 @@ static void device_kill_persitent_engines(struct xe_device *xe,
 	mutex_unlock(&xe->persitent_engines.lock);
 }
 
-#define SOFTWARE_FLAGS_SPR33         _MMIO(0x4F084)
-
 void xe_device_wmb(struct xe_device *xe)
 {
 	struct xe_gt *gt = xe_device_get_gt(xe, 0);

drivers/gpu/drm/xe/xe_gt_mcr.h

@@ -6,7 +6,7 @@
 #ifndef _XE_GT_MCR_H_
 #define _XE_GT_MCR_H_
 
-#include "i915_reg_defs.h"
+#include "regs/xe_reg_defs.h"
 
 struct drm_printer;
 struct xe_gt;

drivers/gpu/drm/xe/xe_gt_pagefault.c

@@ -5,6 +5,7 @@
 
 #include "xe_gt_pagefault.h"
 
+#include <linux/bitfield.h>
 #include <linux/circ_buf.h>
 
 #include <drm/drm_managed.h>

drivers/gpu/drm/xe/xe_gt_topology.c

@@ -7,18 +7,13 @@
 
 #include <linux/bitmap.h>
 
+#include "regs/xe_gt_regs.h"
 #include "xe_gt.h"
 #include "xe_mmio.h"
 
 #define XE_MAX_DSS_FUSE_BITS (32 * XE_MAX_DSS_FUSE_REGS)
 #define XE_MAX_EU_FUSE_BITS (32 * XE_MAX_EU_FUSE_REGS)
 
-#define XELP_EU_ENABLE				0x9134	/* "_DISABLE" on Xe_LP */
-#define   XELP_EU_MASK				REG_GENMASK(7, 0)
-#define XELP_GT_GEOMETRY_DSS_ENABLE		0x913c
-#define XEHP_GT_COMPUTE_DSS_ENABLE		0x9144
-#define XEHPC_GT_COMPUTE_DSS_ENABLE_EXT		0x9148
-
 static void
 load_dss_mask(struct xe_gt *gt, xe_dss_mask_t mask, int numregs, ...)
 {
@@ -41,7 +36,7 @@ static void
 load_eu_mask(struct xe_gt *gt, xe_eu_mask_t mask)
 {
 	struct xe_device *xe = gt_to_xe(gt);
-	u32 reg = xe_mmio_read32(gt, XELP_EU_ENABLE);
+	u32 reg = xe_mmio_read32(gt, XELP_EU_ENABLE.reg);
 	u32 val = 0;
 	int i;
 
@@ -86,10 +81,10 @@ xe_gt_topology_init(struct xe_gt *gt)
 	}
 
 	load_dss_mask(gt, gt->fuse_topo.g_dss_mask, num_geometry_regs,
-		      XELP_GT_GEOMETRY_DSS_ENABLE);
+		      XELP_GT_GEOMETRY_DSS_ENABLE.reg);
 	load_dss_mask(gt, gt->fuse_topo.c_dss_mask, num_compute_regs,
-		      XEHP_GT_COMPUTE_DSS_ENABLE,
-		      XEHPC_GT_COMPUTE_DSS_ENABLE_EXT);
+		      XEHP_GT_COMPUTE_DSS_ENABLE.reg,
+		      XEHPC_GT_COMPUTE_DSS_ENABLE_EXT.reg);
 	load_eu_mask(gt, gt->fuse_topo.eu_mask_per_dss);
 
 	xe_gt_topology_dump(gt, &p);

drivers/gpu/drm/xe/xe_guc.c

@@ -22,14 +22,6 @@
 #include "xe_uc_fw.h"
 #include "xe_wopcm.h"
 
-#include "i915_reg_defs.h"
-
-/* TODO: move to common file */
-#define GUC_PVC_MOCS_INDEX_MASK		REG_GENMASK(25, 24)
-#define PVC_MOCS_UC_INDEX		1
-#define PVC_GUC_MOCS_INDEX(index)	REG_FIELD_PREP(GUC_PVC_MOCS_INDEX_MASK,\
-						       index)
-
 static struct xe_gt *
 guc_to_gt(struct xe_guc *guc)
 {

drivers/gpu/drm/xe/xe_guc_reg.h

@@ -9,7 +9,7 @@
 #include <linux/compiler.h>
 #include <linux/types.h>
 
-#include "i915_reg_defs.h"
+#include "regs/xe_reg_defs.h"
 
 /* Definitions of GuC H/W registers, bits, etc */
 
@@ -93,6 +93,10 @@
 #define   GUC_ENABLE_READ_CACHE_FOR_WOPCM_DATA	(1<<10)
 #define   GUC_ENABLE_MIA_CLOCK_GATING		(1<<15)
 #define   GUC_GEN10_SHIM_WC_ENABLE		(1<<21)
+#define   PVC_GUC_MOCS_INDEX_MASK		REG_GENMASK(25, 24)
+#define   PVC_MOCS_UC_INDEX			1
+#define   PVC_GUC_MOCS_INDEX(index)		REG_FIELD_PREP(PVC_GUC_MOCS_INDEX_MASK,\
+							       index)
 
 #define GUC_SEND_INTERRUPT		_MMIO(0xc4c8)
 #define   GUC_SEND_TRIGGER		  (1<<0)

drivers/gpu/drm/xe/xe_migrate.c

@@ -5,6 +5,7 @@
 
 #include "xe_migrate.h"
 
+#include <linux/bitfield.h>
 #include <linux/sizes.h>
 
 #include <drm/drm_managed.h>

drivers/gpu/drm/xe/xe_pcode_api.h

@@ -5,6 +5,8 @@
 
 /* Internal to xe_pcode */
 
+#include "regs/xe_reg_defs.h"
+
 #define PCODE_MAILBOX			_MMIO(0x138124)
 #define   PCODE_READY			REG_BIT(31)
 #define   PCODE_MB_PARAM2		REG_GENMASK(23, 16)

drivers/gpu/drm/xe/xe_reg_sr_types.h

@@ -9,8 +9,6 @@
 #include <linux/types.h>
 #include <linux/xarray.h>
 
-#include "i915_reg_defs.h"
-
 struct xe_reg_sr_entry {
 	u32		clr_bits;
 	u32		set_bits;

drivers/gpu/drm/xe/xe_rtp.h

@@ -11,8 +11,6 @@
 
 #include "xe_rtp_types.h"
 
-#include "i915_reg_defs.h"
-
 /*
  * Register table poke infrastructure
  */

drivers/gpu/drm/xe/xe_rtp_types.h

@@ -8,8 +8,6 @@
 
 #include <linux/types.h>
 
-#include "i915_reg_defs.h"
-
 struct xe_hw_engine;
 struct xe_gt;
 

drivers/gpu/drm/xe/xe_step.c

@@ -5,6 +5,8 @@
 
 #include "xe_step.h"
 
+#include <linux/bitfield.h>
+
 #include "xe_device.h"
 #include "xe_platform_types.h"