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b58caada60
The board_lmb_reserve() function is not being used, and currently there is only an empty weak function defined. Remove this unused function. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
116 lines
3 KiB
C
116 lines
3 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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#ifndef _LINUX_LMB_H
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#define _LINUX_LMB_H
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#ifdef __KERNEL__
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#include <alist.h>
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#include <asm/types.h>
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#include <asm/u-boot.h>
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#include <linux/bitops.h>
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/*
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* Logical memory blocks.
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*
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* Copyright (C) 2001 Peter Bergner, IBM Corp.
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*/
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/**
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* enum lmb_flags - definition of memory region attributes
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* @LMB_NONE: no special request
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* @LMB_NOMAP: don't add to mmu configuration
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*/
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enum lmb_flags {
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LMB_NONE = 0,
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LMB_NOMAP = BIT(1),
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LMB_NOOVERWRITE = BIT(2),
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};
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/**
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* struct lmb_region - Description of one region.
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*
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* @base: Base address of the region.
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* @size: Size of the region
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* @flags: memory region attributes
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*/
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struct lmb_region {
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phys_addr_t base;
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phys_size_t size;
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enum lmb_flags flags;
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};
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/**
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* struct lmb - The LMB structure
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*
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* @free_mem: List of free memory regions
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* @used_mem: List of used/reserved memory regions
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*/
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struct lmb {
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struct alist free_mem;
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struct alist used_mem;
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};
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/**
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* lmb_init() - Initialise the LMB module
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*
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* Initialise the LMB lists needed for keeping the memory map. There
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* are two lists, in form of alloced list data structure. One for the
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* available memory, and one for the used memory. Initialise the two
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* lists as part of board init. Add memory to the available memory
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* list and reserve common areas by adding them to the used memory
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* list.
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*
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* Return: 0 on success, -ve on error
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*/
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int lmb_init(void);
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/**
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* lmb_add_memory() - Add memory range for LMB allocations
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*
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* Add the entire available memory range to the pool of memory that
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* can be used by the LMB module for allocations.
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*
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* Return: None
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*/
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void lmb_add_memory(void);
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long lmb_add(phys_addr_t base, phys_size_t size);
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long lmb_reserve(phys_addr_t base, phys_size_t size);
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/**
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* lmb_reserve_flags - Reserve one region with a specific flags bitfield.
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*
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* @base: base address of the memory region
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* @size: size of the memory region
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* @flags: flags for the memory region
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* Return: 0 if OK, > 0 for coalesced region or a negative error code.
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*/
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long lmb_reserve_flags(phys_addr_t base, phys_size_t size,
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enum lmb_flags flags);
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phys_addr_t lmb_alloc(phys_size_t size, ulong align);
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phys_addr_t lmb_alloc_base(phys_size_t size, ulong align, phys_addr_t max_addr);
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phys_addr_t lmb_alloc_addr(phys_addr_t base, phys_size_t size);
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phys_size_t lmb_get_free_size(phys_addr_t addr);
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/**
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* lmb_is_reserved_flags() - test if address is in reserved region with flag bits set
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*
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* The function checks if a reserved region comprising @addr exists which has
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* all flag bits set which are set in @flags.
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*
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* @addr: address to be tested
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* @flags: bitmap with bits to be tested
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* Return: 1 if matching reservation exists, 0 otherwise
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*/
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int lmb_is_reserved_flags(phys_addr_t addr, int flags);
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long lmb_free(phys_addr_t base, phys_size_t size);
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void lmb_dump_all(void);
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void lmb_dump_all_force(void);
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struct lmb *lmb_get(void);
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int lmb_push(struct lmb *store);
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void lmb_pop(struct lmb *store);
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#endif /* __KERNEL__ */
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#endif /* _LINUX_LMB_H */
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