/*
   Copyright (c) 2013 Broadcom Corporation
   All Rights Reserved

    <:label-BRCM:2013:DUAL/GPL:standard
    
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License, version 2, as published by
    the Free Software Foundation (the "GPL").
    
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
    
    
    A copy of the GPL is available at http://www.broadcom.com/licenses/GPLv2.php, or by
    writing to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.
    
    :>
*/

/******************************************************************************/
/*                                                                            */
/* File Description:                                                          */
/*                                                                            */
/* This file contains the Broadcom OS/CPU independent Memory Management API   */
/*                                                                            */
/******************************************************************************/

#ifndef _BCM_MM_H_
#define _BCM_MM_H_


#if defined(_CFE_)

#include "lib_malloc.h"
#include "cfe_iocb.h"

#if defined(CONFIG_ARM) || defined(CONFIG_ARM64)

#include "addrspace.h"

/* For CFE boot loader, cached addresses are mapped to physical addresses. Uncached addresses or OR'd with 0x40000000. */
#define CACHE_TO_NONCACHE(x)    			cache_to_uncache(((uintptr_t)(x)))
#define NONCACHE_TO_CACHE(x)    			uncache_to_cache(((uintptr_t)(x)))
#define CACHED_MALLOC_ATOMIC(_size) 			uncache_to_cache((uintptr_t)KMALLOC((_size),0))
#define CACHED_MALLOC(_size) 				uncache_to_cache((uintptr_t)KMALLOC((_size),0))
#define NONCACHED_MALLOC_ATOMIC(_size) 			cache_to_uncache((uintptr_t)KMALLOC((_size),0))
#define NONCACHED_MALLOC(_size) 			cache_to_uncache((uintptr_t)KMALLOC((_size),0))
#define NONCACHED_FREE(_ptr) 				KFREE(uncache_to_cache(_ptr))
#define CACHED_FREE(_ptr)				KFREE(_ptr)
#define VIRT_TO_PHYS(_addr)				uncache_to_cache((uintptr_t)_addr)
#define PHYS_TO_CACHED(_addr)				((uintptr_t)_addr)
#define PHYS_TO_UNCACHED(_addr)				cache_to_uncache((uintptr_t)_addr)
#if defined(BCM6858) || defined(BCM6836) || defined(CONFIG_BCM963148)
#define DMA_CACHE_LINE					64
#else
#define DMA_CACHE_LINE					32
#endif
extern void _cfe_flushcache(int, uint8_t *, uint8_t *);
#define FLUSH_RANGE(s,l) 				_cfe_flushcache(CFE_CACHE_FLUSH_RANGE,((uint8_t *) (s)),((uint8_t *) (s))+(l))
#define INV_RANGE(s,l) 					_cfe_flushcache(CFE_CACHE_INVAL_RANGE,((uint8_t *) (s)),((uint8_t *) (s))+(l))

#else /* !CONFIG_ARM */

#define CACHE_TO_NONCACHE(x)    			K0_TO_K1((uint32_t)x)
#define NONCACHE_TO_CACHE(x)    			K1_TO_K0((uint32_t)x)
#define CACHED_MALLOC_ATOMIC(_size) 			NONCACHE_TO_CACHE(KMALLOC(_size,0))
#define CACHED_MALLOC(_size) 				NONCACHE_TO_CACHE(KMALLOC(_size,0))
#define NONCACHED_MALLOC_ATOMIC(_size) 			CACHE_TO_NONCACHE(KMALLOC(_size,0))
#define NONCACHED_MALLOC(_size) 			CACHE_TO_NONCACHE(KMALLOC(_size,0))
#define NONCACHED_FREE(_ptr) 				KFREE(NONCACHE_TO_CACHE(_ptr))
#define CACHED_FREE(_ptr)				KFREE(_ptr)
#define VIRT_TO_PHYS(_addr)				K0_TO_PHYS((uint32_t)_addr)
#define PHYS_TO_CACHED(_addr)				PHYS_TO_K0((uint32_t)_addr)
#define PHYS_TO_UNCACHED(_addr)				PHYS_TO_K1((uint32_t)_addr)
#define DMA_CACHE_LINE					16
extern void _cfe_flushcache(int, uint8_t *, uint8_t *);
#define FLUSH_RANGE(s,l) 				_cfe_flushcache(CFE_CACHE_FLUSH_RANGE,((uint8_t *) (s)),((uint8_t *) (s))+(l))
#define INV_RANGE(s,l) 					_cfe_flushcache(CFE_CACHE_INVAL_RANGE,((uint8_t *) (s)),((uint8_t *) (s))+(l))

#endif /* !CONFIG_ARM */

#elif defined(__KERNEL__)

#if defined(CONFIG_MIPS)

#define CACHE_TO_NONCACHE(x)    			KSEG1ADDR(x)
#define NONCACHE_TO_CACHE(x)    			KSEG0ADDR(x)
#define CACHED_MALLOC_ATOMIC(_size) 			kmalloc(_size,GFP_ATOMIC)
#define CACHED_MALLOC(_size) 				kmalloc(_size,GFP_KERNEL)
#define CACHED_FREE(ptr) 				kfree((void*)ptr)
#define NONCACHED_MALLOC_ATOMIC(_size) 			CACHE_TO_NONCACHE(kmalloc(_size,GFP_ATOMIC|__GFP_DMA))
#define NONCACHED_MALLOC(_size) 			CACHE_TO_NONCACHE(kmalloc(_size,GFP_ATOMIC|__GFP_DMA))
#define NONCACHED_FREE(_ptr) 				kfree((void*)NONCACHE_TO_CACHE(_ptr))
#ifdef VIRT_TO_PHYS
#undef VIRT_TO_PHYS
#endif
#define VIRT_TO_PHYS(_addr)				CPHYSADDR(_addr)
#define PHYS_TO_CACHED(_addr)				KSEG0ADDR(_addr)
#define PHYS_TO_UNCACHED(_addr)				KSEG1ADDR(_addr)
#define FLUSH_RANGE(_addr, _size) 			blast_dcache_range(_addr, _addr+_size)
#define INV_RANGE(_addr, _size) 			blast_inv_dcache_range((uint32_t)_addr, (uint32_t)_addr+_size)

#elif defined(CONFIG_ARM) || defined(CONFIG_ARM64)

#define CACHE_TO_NONCACHE(x)    			(x)
#define NONCACHE_TO_CACHE(x)    			(x)
#define CACHED_MALLOC_ATOMIC(_size) 			kmalloc(_size,GFP_ATOMIC)
#define CACHED_MALLOC(_size) 				kmalloc(_size,GFP_KERNEL)
#define CACHED_FREE(ptr) 				kfree((void*)ptr)
#ifdef CONFIG_PLAT_BCM63XX_ACP
/* will allocate an additional 4 bytes at the end to store the original virtual pointer */
#define NONCACHED_MALLOC(_size, _phys_addr_ptr)		({void *_acp_addr_ptr = NULL;			\
		void *_org_addr_ptr = dma_alloc_coherent(NULL, _size + sizeof(void *), _phys_addr_ptr, GFP_KERNEL|GFP_ACP);	\
		if (_org_addr_ptr != NULL) {								\
			_acp_addr_ptr = (void *)ACP_ADDRESS(*_phys_addr_ptr);				\
			*(uintptr_t *)((uintptr_t)_acp_addr_ptr + _size) = (uintptr_t)_org_addr_ptr;	\
		}											\
		_acp_addr_ptr;		})
#define NONCACHED_MALLOC_ATOMIC(_size, _phys_addr_ptr)	({void *_acp_addr_ptr = NULL;			\
		void *_org_addr_ptr = dma_alloc_coherent(NULL, _size + sizeof(void *), _phys_addr_ptr, GFP_ATOMIC|GFP_ACP);	\
		if (_org_addr_ptr != NULL) {								\
			_acp_addr_ptr = (void *)ACP_ADDRESS(*_phys_addr_ptr);				\
			*(uintptr_t *)((uintptr_t)_acp_addr_ptr + _size) = (uintptr_t)_org_addr_ptr;	\
		}											\
		_acp_addr_ptr;		})
#define NONCACHED_FREE(_size, _ptr, _phys_addr)		({void *_org_addr_ptr;				\
			_org_addr_ptr = (void *)(*(uintptr_t *)((uintptr_t)_ptr + _size));	\
		dma_free_coherent(NULL, _size + 4, _org_addr_ptr, _phys_addr);	})
#else
#define NONCACHED_MALLOC_ATOMIC(_size, _phys_addr_ptr)	dma_alloc_coherent(NULL, _size, _phys_addr_ptr, GFP_ATOMIC)
#define NONCACHED_MALLOC(_size, _phys_addr_ptr)		dma_alloc_coherent(NULL, _size, _phys_addr_ptr, GFP_KERNEL)
#define NONCACHED_FREE(size, _ptr, _phys_addr)		dma_free_coherent(NULL, size, _ptr, _phys_addr)
#endif
#define VIRT_TO_PHYS(_addr)				virt_to_phys((const volatile void *)_addr)
#define PHYS_TO_CACHED(_addr)				phys_to_virt((phys_addr_t)_addr)
#define PHYS_TO_UNCACHED(_addr)				phys_to_virt((phys_addr_t)_addr)
#define FLUSH_RANGE(_addr, _size) 			dma_map_single(NULL, (void *)_addr, _size, DMA_TO_DEVICE)
#define INV_RANGE(_addr, _size) 			dma_map_single(NULL, (void *)_addr, _size, DMA_FROM_DEVICE)

#endif

#define DMA_CACHE_LINE					dma_get_cache_alignment()

#else
#define CACHE_TO_NONCACHE(x)    			KSEG1ADDR(x)
#define NONCACHE_TO_CACHE(x)    			KSEG0ADDR(x)
#define VIRT_TO_PHYS(_addr)				CPHYSADDR(_addr)
#define PHYS_TO_CACHED(_addr)				KSEG0ADDR(_addr)
#define PHYS_TO_UNCACHED(_addr)			KSEG1ADDR(_addr)
#endif

#endif /* _BCM_MM_H_ */