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/*
* @File pvr_vmap.h
* @Title Utility functions for virtual memory mapping
* @Codingstyle LinuxKernel
* @Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved
* @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
* 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 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.
*
* If you wish to allow use of your version of this file only under the terms of
* GPL, and not to allow others to use your version of this file under the terms
* of the MIT license, indicate your decision by deleting the provisions above
* 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
* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS 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 PVR_VMAP_H
#define PVR_VMAP_H
#include <linux/version.h>
#include <linux/vmalloc.h>
#ifndef CACHE_TEST
#define RISCV_STARFIVE_CACHE_COHERENT_FIX
#endif
#ifndef RISCV_STARFIVE_CACHE_COHERENT_FIX
static inline void *pvr_vmap(struct page **pages,
unsigned int count,
__maybe_unused unsigned long flags,
pgprot_t prot)
{
#if !defined(CONFIG_64BIT) || defined(PVRSRV_FORCE_SLOWER_VMAP_ON_64BIT_BUILDS)
return vmap(pages, count, flags, prot);
#elif (LINUX_VERSION_CODE < KERNEL_VERSION(5, 8, 0))
return vm_map_ram(pages, count, -1, prot);
#else
if (pgprot_val(prot) == pgprot_val(PAGE_KERNEL))
return vm_map_ram(pages, count, -1);
else
return vmap(pages, count, flags, prot);
#endif /* !defined(CONFIG_64BIT) || defined(PVRSRV_FORCE_SLOWER_VMAP_ON_64BIT_BUILDS) */
}
static inline void pvr_vunmap(void *pages,
__maybe_unused unsigned int count,
__maybe_unused pgprot_t prot)
{
#if !defined(CONFIG_64BIT) || defined(PVRSRV_FORCE_SLOWER_VMAP_ON_64BIT_BUILDS)
vunmap(pages);
#elif (LINUX_VERSION_CODE < KERNEL_VERSION(5, 8, 0))
vm_unmap_ram(pages, count);
#else
if (pgprot_val(prot) == pgprot_val(PAGE_KERNEL))
vm_unmap_ram(pages, count);
else
vunmap(pages);
#endif /* !defined(CONFIG_64BIT) || defined(PVRSRV_FORCE_SLOWER_VMAP_ON_64BIT_BUILDS) */
}
#else
extern void *riscv_vmap(struct page **pages, unsigned int count,
unsigned long flags, pgprot_t prot, int cached);
static inline void *pvr_vmap(struct page **pages,
unsigned int count,
__maybe_unused unsigned long flags,
pgprot_t prot)
{
return riscv_vmap(pages, count, flags, prot, 0);
}
static inline void *pvr_vmap_cached(struct page **pages,
unsigned int count,
__maybe_unused unsigned long flags,
pgprot_t prot)
{
return riscv_vmap(pages, count, flags, prot, 1);
}
static inline void pvr_vunmap(void *pages,
__maybe_unused unsigned int count,
__maybe_unused pgprot_t prot)
{
vunmap(pages);
}
#endif /* RISCV_STARFIVE_CACHE_COHERENT_FIX */
#endif /* PVR_VMAP_H */
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