drm: delete drmP.h + drm_os_linux.h

There is finally no more users left in the kernel of drmP.h
and drm_os_linux.h (drmP.h was the only user left).
Delete the header files and delete the corresponding todo entry.

When we started this quest there was more than 700 users of drmP.h.
And drmP.h was a huge cover-it-all header file.

Daniel Vetter is the one that followed the work from start
to the end and in between many people have contributed to the
removal process - thanks to everyone!
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Sean Paul <sean@poorly.run>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191007171224.1581-3-sam@ravnborg.org

Documentation/gpu/todo.rst

@@ -299,18 +299,6 @@ connector register/unregister fixes
 Core refactorings
 =================
 
-Clean up the DRM header mess
-----------------------------
-
-The DRM subsystem originally had only one huge global header, ``drmP.h``. This
-is now split up, but many source files still include it. The remaining part of
-the cleanup work here is to replace any ``#include <drm/drmP.h>`` by only the
-headers needed (and fixing up any missing pre-declarations in the headers).
-
-In the end no .c file should need to include ``drmP.h`` anymore.
-
-Contact: Daniel Vetter
-
 Make panic handling work
 ------------------------
 

include/drm/drmP.h

-/*
- * Internal Header for the Direct Rendering Manager
- *
- * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
- * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
- * Copyright (c) 2009-2010, Code Aurora Forum.
- * All rights reserved.
- *
- * Author: Rickard E. (Rik) Faith <faith@valinux.com>
- * Author: Gareth Hughes <gareth@valinux.com>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#ifndef _DRM_P_H_
-#define _DRM_P_H_
-
-#include <linux/agp_backend.h>
-#include <linux/cdev.h>
-#include <linux/dma-mapping.h>
-#include <linux/file.h>
-#include <linux/fs.h>
-#include <linux/highmem.h>
-#include <linux/idr.h>
-#include <linux/init.h>
-#include <linux/io.h>
-#include <linux/jiffies.h>
-#include <linux/kernel.h>
-#include <linux/kref.h>
-#include <linux/miscdevice.h>
-#include <linux/mm.h>
-#include <linux/mutex.h>
-#include <linux/platform_device.h>
-#include <linux/poll.h>
-#include <linux/ratelimit.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <linux/vmalloc.h>
-#include <linux/workqueue.h>
-#include <linux/dma-fence.h>
-#include <linux/module.h>
-#include <linux/mman.h>
-#include <asm/pgalloc.h>
-#include <linux/uaccess.h>
-
-#include <uapi/drm/drm.h>
-#include <uapi/drm/drm_mode.h>
-
-#include <drm/drm_agpsupport.h>
-#include <drm/drm_crtc.h>
-#include <drm/drm_fourcc.h>
-#include <drm/drm_hashtab.h>
-#include <drm/drm_mm.h>
-#include <drm/drm_os_linux.h>
-#include <drm/drm_sarea.h>
-#include <drm/drm_drv.h>
-#include <drm/drm_prime.h>
-#include <drm/drm_print.h>
-#include <drm/drm_pci.h>
-#include <drm/drm_file.h>
-#include <drm/drm_debugfs.h>
-#include <drm/drm_ioctl.h>
-#include <drm/drm_sysfs.h>
-#include <drm/drm_vblank.h>
-#include <drm/drm_irq.h>
-#include <drm/drm_device.h>
-
-struct module;
-
-struct device_node;
-struct videomode;
-struct dma_resv;
-struct dma_buf_attachment;
-
-struct pci_dev;
-struct pci_controller;
-
-/*
- * NOTE: drmP.h is obsolete - do NOT add anything to this file
- *
- * Do not include drmP.h in new files.
- * Work is ongoing to remove drmP.h includes from existing files
- */
-
-#endif

include/drm/drm_os_linux.h

-/* SPDX-License-Identifier: GPL-2.0 */
-/**
- * \file drm_os_linux.h
- * OS abstraction macros.
- */
-
-#include <linux/interrupt.h>	/* For task queue support */
-#include <linux/sched/signal.h>
-#include <linux/delay.h>
-#include <linux/io-64-nonatomic-lo-hi.h>
-
-/** Current process ID */
-#define DRM_CURRENTPID			task_pid_nr(current)
-#define DRM_UDELAY(d)			udelay(d)
-/** Read a byte from a MMIO region */
-#define DRM_READ8(map, offset)		readb(((void __iomem *)(map)->handle) + (offset))
-/** Read a word from a MMIO region */
-#define DRM_READ16(map, offset)         readw(((void __iomem *)(map)->handle) + (offset))
-/** Read a dword from a MMIO region */
-#define DRM_READ32(map, offset)		readl(((void __iomem *)(map)->handle) + (offset))
-/** Write a byte into a MMIO region */
-#define DRM_WRITE8(map, offset, val)	writeb(val, ((void __iomem *)(map)->handle) + (offset))
-/** Write a word into a MMIO region */
-#define DRM_WRITE16(map, offset, val)   writew(val, ((void __iomem *)(map)->handle) + (offset))
-/** Write a dword into a MMIO region */
-#define DRM_WRITE32(map, offset, val)	writel(val, ((void __iomem *)(map)->handle) + (offset))
-
-/** Read a qword from a MMIO region - be careful using these unless you really understand them */
-#define DRM_READ64(map, offset)		readq(((void __iomem *)(map)->handle) + (offset))
-/** Write a qword into a MMIO region */
-#define DRM_WRITE64(map, offset, val)	writeq(val, ((void __iomem *)(map)->handle) + (offset))
-
-#define DRM_WAIT_ON( ret, queue, timeout, condition )		\
-do {								\
-	DECLARE_WAITQUEUE(entry, current);			\
-	unsigned long end = jiffies + (timeout);		\
-	add_wait_queue(&(queue), &entry);			\
-								\
-	for (;;) {						\
-		__set_current_state(TASK_INTERRUPTIBLE);	\
-		if (condition)					\
-			break;					\
-		if (time_after_eq(jiffies, end)) {		\
-			ret = -EBUSY;				\
-			break;					\
-		}						\
-		schedule_timeout((HZ/100 > 1) ? HZ/100 : 1);	\
-		if (signal_pending(current)) {			\
-			ret = -EINTR;				\
-			break;					\
-		}						\
-	}							\
-	__set_current_state(TASK_RUNNING);			\
-	remove_wait_queue(&(queue), &entry);			\
-} while (0)