drivers/misc/mediatek/gpu/gpu_rgx/m1.9ED4917962/services/server/env/linux/kernel_compatibility.h

/*************************************************************************/ /*!
@File           services/server/env/linux/kernel_compatibility.h
@Title          Kernel versions compatibility macros
@Copyright      Copyright (c) Imagination Technologies Ltd. All Rights Reserved
@Description    Per-version macros to allow code to seamlessly use older kernel
@License        Dual MIT/GPLv2

The contents of this file are subject to the MIT license as set out below.

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
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

Alternatively, the contents of this file may be used under the terms of
the GNU General Public License Version 2 ("GPL") in which case the provisions
of GPL are applicable instead of those above.

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and replace them with the notice and other provisions required by GPL as set
out in the file called "GPL-COPYING" included in this distribution. If you do
not delete the provisions above, a recipient may use your version of this file
under the terms of either the MIT license or GPL.

This License is also included in this distribution in the file called
"MIT-COPYING".

EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS
PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
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*/ /**************************************************************************/

#ifndef __KERNEL_COMPATIBILITY_H__
#define __KERNEL_COMPATIBILITY_H__

#include <linux/version.h>

/*
 * Stop supporting an old kernel? Remove the top block.
 * New incompatible kernel?       Append a new block at the bottom.
 *
 * Please write you version test as `VERSION < X.Y`, and use the earliest
 * possible version :)
 */


#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 0))

/* Linux 3.7 split VM_RESERVED into VM_DONTDUMP and VM_DONTEXPAND */
#define VM_DONTDUMP VM_RESERVED

#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 0)) */

/*
 * Note: this fix had to be written backwards because get_unused_fd_flags
 * was already defined but not exported on kernels < 3.7
 *
 * When removing support for kernels < 3.7, this block should be removed
 * and all `get_unused_fd()` should be manually replaced with
 * `get_unused_fd_flags(0)`
 */
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0))

/* Linux 3.19 removed get_unused_fd() */
/* get_unused_fd_flags  was introduced in 3.7 */
#define get_unused_fd() get_unused_fd_flags(0)

#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)) */

#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 8, 0))

/*
 * Headers shouldn't normally be included by this file but this is a special
 * case as it's not obvious from the name that devfreq_add_device needs this
 * include.
 */
#include <linux/string.h>

#define devfreq_add_device(dev, profile, name, data) \
	({ \
		struct devfreq *__devfreq; \
		if (name && !strcmp(name, "simple_ondemand")) \
			__devfreq = devfreq_add_device(dev, profile, \
							   &devfreq_simple_ondemand, data); \
		else \
			__devfreq = ERR_PTR(-EINVAL); \
		__devfreq; \
	})

#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(3, 8, 0)) */

#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0))

/* Linux 3.12 introduced a new shrinker API */
#define SHRINK_STOP (~0UL)

#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0)) */


#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0))

#define dev_pm_opp_get_opp_count(dev) opp_get_opp_count(dev)
#define dev_pm_opp_get_freq(opp) opp_get_freq(opp)
#define dev_pm_opp_get_voltage(opp) opp_get_voltage(opp)
#define dev_pm_opp_add(dev, freq, u_volt) opp_add(dev, freq, u_volt)
#define dev_pm_opp_find_freq_ceil(dev, freq) opp_find_freq_ceil(dev, freq)

#if defined(CONFIG_ARM)
/* Linux 3.13 renamed ioremap_cached to ioremap_cache */
#define ioremap_cache(cookie,size) ioremap_cached(cookie,size)
#endif /* defined(CONFIG_ARM) */

#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0)) */


#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0))

/* Linux 3.17 changed the 3rd argument from a `struct page ***pages` to
 * `struct page **pages` */
#define map_vm_area(area, prot, pages) map_vm_area(area, prot, &pages)

#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)) */


#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 19, 0))

/*
 * Linux 4.7 removed this function but its replacement was available since 3.19.
 */
#define drm_crtc_send_vblank_event(crtc, e) drm_send_vblank_event((crtc)->dev, drm_crtc_index(crtc), e)

#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(3, 19, 0)) */


#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 4, 0))

/* Linux 4.4 renamed GFP_WAIT to GFP_RECLAIM */
#define __GFP_RECLAIM __GFP_WAIT

#if !defined(CHROMIUMOS_KERNEL) || (LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0))
#define dev_pm_opp_of_add_table(dev) of_init_opp_table(dev)
#define dev_pm_opp_of_remove_table(dev) of_free_opp_table(dev)
#endif

#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(4, 4, 0)) */


#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0)) && \
	(!defined(CHROMIUMOS_KERNEL) || (LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0)))

/* Linux 4.5 added a new printf-style parameter for debug messages */

#define drm_encoder_init(dev, encoder, funcs, encoder_type, name, ...) \
        drm_encoder_init(dev, encoder, funcs, encoder_type)

#define drm_universal_plane_init(dev, plane, possible_crtcs, funcs, formats, format_count, type, name, ...) \
        drm_universal_plane_init(dev, plane, possible_crtcs, funcs, formats, format_count, type)

#define drm_crtc_init_with_planes(dev, crtc, primary, cursor, funcs, name, ...) \
        drm_crtc_init_with_planes(dev, crtc, primary, cursor, funcs)

#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0)) */


#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0)) && \
	(!defined(CHROMIUMOS_KERNEL) || (LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0)))

/*
 * Linux 4.6 removed the start and end arguments as it now always maps
 * the entire DMA-BUF.
 * Additionally, dma_buf_end_cpu_access() now returns an int error.
 */
#define dma_buf_begin_cpu_access(DMABUF, DIRECTION) dma_buf_begin_cpu_access(DMABUF, 0, DMABUF->size, DIRECTION)
#define dma_buf_end_cpu_access(DMABUF, DIRECTION) ({ dma_buf_end_cpu_access(DMABUF, 0, DMABUF->size, DIRECTION); 0; })

#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0)) && \
		  (!defined(CHROMIUMOS_KERNEL) || (LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0))) */

#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0))

/* Linux 4.7 removed the first arguments as it's never been used */
#define drm_gem_object_lookup(filp, handle) drm_gem_object_lookup((filp)->minor->dev, filp, handle)

/* Linux 4.7 replaced nla_put_u64 with nla_put_u64_64bit */
#define nla_put_u64_64bit(skb, attrtype, value, padattr) nla_put_u64(skb, attrtype, value)

#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0)) */

#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 9, 0))

/* Linux 4.9 changed the second argument to a drm_file pointer */
#define drm_vma_node_is_allowed(node, file_priv) drm_vma_node_is_allowed(node, (file_priv)->filp)

#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(4, 9, 0)) */

#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 11, 0))
static inline unsigned int refcount_read(const atomic_t *r)
{
	return atomic_read(r);
}
#define drm_mm_insert_node(mm, node, size) drm_mm_insert_node(mm, node, size, 0, DRM_MM_SEARCH_DEFAULT) 

#define drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd) drm_helper_mode_fill_fb_struct(fb, mode_cmd)
#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(4, 11, 0)) */

#endif /* __KERNEL_COMPATIBILITY_H__ */