u-boot/include/lmb.h
Masahiro Yamada b75d8dc564 treewide: convert bd_t to struct bd_info by coccinelle
The Linux coding style guide (Documentation/process/coding-style.rst)
clearly says:

  It's a **mistake** to use typedef for structures and pointers.

Besides, using typedef for structures is annoying when you try to make
headers self-contained.

Let's say you have the following function declaration in a header:

  void foo(bd_t *bd);

This is not self-contained since bd_t is not defined.

To tell the compiler what 'bd_t' is, you need to include <asm/u-boot.h>

  #include <asm/u-boot.h>
  void foo(bd_t *bd);

Then, the include direcective pulls in more bloat needlessly.

If you use 'struct bd_info' instead, it is enough to put a forward
declaration as follows:

  struct bd_info;
  void foo(struct bd_info *bd);

Right, typedef'ing bd_t is a mistake.

I used coccinelle to generate this commit.

The semantic patch that makes this change is as follows:

  <smpl>
  @@
  typedef bd_t;
  @@
  -bd_t
  +struct bd_info
  </smpl>

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-07-17 09:30:13 -04:00

64 lines
1.8 KiB
C

/* SPDX-License-Identifier: GPL-2.0+ */
#ifndef _LINUX_LMB_H
#define _LINUX_LMB_H
#ifdef __KERNEL__
#include <asm/types.h>
#include <asm/u-boot.h>
/*
* Logical memory blocks.
*
* Copyright (C) 2001 Peter Bergner, IBM Corp.
*/
#define MAX_LMB_REGIONS 8
struct lmb_property {
phys_addr_t base;
phys_size_t size;
};
struct lmb_region {
unsigned long cnt;
phys_size_t size;
struct lmb_property region[MAX_LMB_REGIONS+1];
};
struct lmb {
struct lmb_region memory;
struct lmb_region reserved;
};
extern void lmb_init(struct lmb *lmb);
extern void lmb_init_and_reserve(struct lmb *lmb, struct bd_info *bd,
void *fdt_blob);
extern void lmb_init_and_reserve_range(struct lmb *lmb, phys_addr_t base,
phys_size_t size, void *fdt_blob);
extern long lmb_add(struct lmb *lmb, phys_addr_t base, phys_size_t size);
extern long lmb_reserve(struct lmb *lmb, phys_addr_t base, phys_size_t size);
extern phys_addr_t lmb_alloc(struct lmb *lmb, phys_size_t size, ulong align);
extern phys_addr_t lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align,
phys_addr_t max_addr);
extern phys_addr_t __lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align,
phys_addr_t max_addr);
extern phys_addr_t lmb_alloc_addr(struct lmb *lmb, phys_addr_t base,
phys_size_t size);
extern phys_size_t lmb_get_free_size(struct lmb *lmb, phys_addr_t addr);
extern int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr);
extern long lmb_free(struct lmb *lmb, phys_addr_t base, phys_size_t size);
extern void lmb_dump_all(struct lmb *lmb);
static inline phys_size_t
lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
{
return type->region[region_nr].size;
}
void board_lmb_reserve(struct lmb *lmb);
void arch_lmb_reserve(struct lmb *lmb);
#endif /* __KERNEL__ */
#endif /* _LINUX_LMB_H */