linux/drivers/net/wireless/ti/wl1251/io.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * This file is part of wl12xx
 *
 * Copyright (C) 2008 Nokia Corporation
 */

#include "wl1251.h"
#include "reg.h"
#include "io.h"

/* FIXME: this is static data nowadays and the table can be removed */
static enum wl12xx_acx_int_reg wl1251_io_reg_table[ACX_REG_TABLE_LEN] = …;

static int wl1251_translate_reg_addr(struct wl1251 *wl, int addr)
{ … }

static int wl1251_translate_mem_addr(struct wl1251 *wl, int addr)
{ … }

void wl1251_mem_read(struct wl1251 *wl, int addr, void *buf, size_t len)
{ … }

void wl1251_mem_write(struct wl1251 *wl, int addr, void *buf, size_t len)
{ … }

u32 wl1251_mem_read32(struct wl1251 *wl, int addr)
{ … }

void wl1251_mem_write32(struct wl1251 *wl, int addr, u32 val)
{ … }

u32 wl1251_reg_read32(struct wl1251 *wl, int addr)
{ … }

void wl1251_reg_write32(struct wl1251 *wl, int addr, u32 val)
{ … }

/* Set the partitions to access the chip addresses.
 *
 * There are two VIRTUAL partitions (the memory partition and the
 * registers partition), which are mapped to two different areas of the
 * PHYSICAL (hardware) memory.  This function also makes other checks to
 * ensure that the partitions are not overlapping.  In the diagram below, the
 * memory partition comes before the register partition, but the opposite is
 * also supported.
 *
 *                               PHYSICAL address
 *                                     space
 *
 *                                    |    |
 *                                 ...+----+--> mem_start
 *          VIRTUAL address     ...   |    |
 *               space       ...      |    | [PART_0]
 *                        ...         |    |
 * 0x00000000 <--+----+...         ...+----+--> mem_start + mem_size
 *               |    |         ...   |    |
 *               |MEM |      ...      |    |
 *               |    |   ...         |    |
 *  part_size <--+----+...            |    | {unused area)
 *               |    |   ...         |    |
 *               |REG |      ...      |    |
 *  part_size    |    |         ...   |    |
 *      +     <--+----+...         ...+----+--> reg_start
 *  reg_size              ...         |    |
 *                           ...      |    | [PART_1]
 *                              ...   |    |
 *                                 ...+----+--> reg_start + reg_size
 *                                    |    |
 *
 */
void wl1251_set_partition(struct wl1251 *wl,
			  u32 mem_start, u32 mem_size,
			  u32 reg_start, u32 reg_size)
{ … }