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9bc6772e15
wl1271 driver is under heavy development but on the other hand the older wl1251 driver is currently considered more as a legacy driver. To make it easier to develop wl1271 features move wl1251 to it's own directory, drivers/net/wireless/wl1251. There are no functional changes, only moving of files. One regression is that Kconfig won't be updated automatically and user needs to enable wl1251 manually with an older config file. Signed-off-by: Kalle Valo <kvalo@adurom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
195 lines
6.6 KiB
C
195 lines
6.6 KiB
C
/*
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* This file is part of wl12xx
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*
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* Copyright (C) 2008 Nokia Corporation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#include "wl1251.h"
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#include "reg.h"
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#include "io.h"
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/* FIXME: this is static data nowadays and the table can be removed */
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static enum wl12xx_acx_int_reg wl1251_io_reg_table[ACX_REG_TABLE_LEN] = {
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[ACX_REG_INTERRUPT_TRIG] = (REGISTERS_BASE + 0x0474),
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[ACX_REG_INTERRUPT_TRIG_H] = (REGISTERS_BASE + 0x0478),
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[ACX_REG_INTERRUPT_MASK] = (REGISTERS_BASE + 0x0494),
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[ACX_REG_HINT_MASK_SET] = (REGISTERS_BASE + 0x0498),
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[ACX_REG_HINT_MASK_CLR] = (REGISTERS_BASE + 0x049C),
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[ACX_REG_INTERRUPT_NO_CLEAR] = (REGISTERS_BASE + 0x04B0),
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[ACX_REG_INTERRUPT_CLEAR] = (REGISTERS_BASE + 0x04A4),
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[ACX_REG_INTERRUPT_ACK] = (REGISTERS_BASE + 0x04A8),
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[ACX_REG_SLV_SOFT_RESET] = (REGISTERS_BASE + 0x0000),
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[ACX_REG_EE_START] = (REGISTERS_BASE + 0x080C),
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[ACX_REG_ECPU_CONTROL] = (REGISTERS_BASE + 0x0804)
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};
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static int wl1251_translate_reg_addr(struct wl1251 *wl, int addr)
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{
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/* If the address is lower than REGISTERS_BASE, it means that this is
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* a chip-specific register address, so look it up in the registers
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* table */
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if (addr < REGISTERS_BASE) {
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/* Make sure we don't go over the table */
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if (addr >= ACX_REG_TABLE_LEN) {
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wl1251_error("address out of range (%d)", addr);
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return -EINVAL;
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}
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addr = wl1251_io_reg_table[addr];
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}
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return addr - wl->physical_reg_addr + wl->virtual_reg_addr;
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}
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static int wl1251_translate_mem_addr(struct wl1251 *wl, int addr)
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{
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return addr - wl->physical_mem_addr + wl->virtual_mem_addr;
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}
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void wl1251_mem_read(struct wl1251 *wl, int addr, void *buf, size_t len)
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{
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int physical;
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physical = wl1251_translate_mem_addr(wl, addr);
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wl->if_ops->read(wl, physical, buf, len);
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}
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void wl1251_mem_write(struct wl1251 *wl, int addr, void *buf, size_t len)
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{
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int physical;
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physical = wl1251_translate_mem_addr(wl, addr);
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wl->if_ops->write(wl, physical, buf, len);
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}
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u32 wl1251_mem_read32(struct wl1251 *wl, int addr)
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{
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return wl1251_read32(wl, wl1251_translate_mem_addr(wl, addr));
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}
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void wl1251_mem_write32(struct wl1251 *wl, int addr, u32 val)
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{
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wl1251_write32(wl, wl1251_translate_mem_addr(wl, addr), val);
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}
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u32 wl1251_reg_read32(struct wl1251 *wl, int addr)
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{
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return wl1251_read32(wl, wl1251_translate_reg_addr(wl, addr));
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}
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void wl1251_reg_write32(struct wl1251 *wl, int addr, u32 val)
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{
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wl1251_write32(wl, wl1251_translate_reg_addr(wl, addr), val);
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}
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/* Set the partitions to access the chip addresses.
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*
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* There are two VIRTUAL partitions (the memory partition and the
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* registers partition), which are mapped to two different areas of the
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* PHYSICAL (hardware) memory. This function also makes other checks to
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* ensure that the partitions are not overlapping. In the diagram below, the
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* memory partition comes before the register partition, but the opposite is
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* also supported.
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*
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* PHYSICAL address
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* space
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*
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* | |
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* ...+----+--> mem_start
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* VIRTUAL address ... | |
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* space ... | | [PART_0]
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* ... | |
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* 0x00000000 <--+----+... ...+----+--> mem_start + mem_size
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* | | ... | |
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* |MEM | ... | |
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* | | ... | |
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* part_size <--+----+... | | {unused area)
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* | | ... | |
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* |REG | ... | |
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* part_size | | ... | |
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* + <--+----+... ...+----+--> reg_start
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* reg_size ... | |
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* ... | | [PART_1]
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* ... | |
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* ...+----+--> reg_start + reg_size
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* | |
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*
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*/
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void wl1251_set_partition(struct wl1251 *wl,
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u32 mem_start, u32 mem_size,
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u32 reg_start, u32 reg_size)
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{
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struct wl1251_partition partition[2];
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wl1251_debug(DEBUG_SPI, "mem_start %08X mem_size %08X",
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mem_start, mem_size);
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wl1251_debug(DEBUG_SPI, "reg_start %08X reg_size %08X",
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reg_start, reg_size);
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/* Make sure that the two partitions together don't exceed the
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* address range */
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if ((mem_size + reg_size) > HW_ACCESS_MEMORY_MAX_RANGE) {
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wl1251_debug(DEBUG_SPI, "Total size exceeds maximum virtual"
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" address range. Truncating partition[0].");
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mem_size = HW_ACCESS_MEMORY_MAX_RANGE - reg_size;
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wl1251_debug(DEBUG_SPI, "mem_start %08X mem_size %08X",
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mem_start, mem_size);
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wl1251_debug(DEBUG_SPI, "reg_start %08X reg_size %08X",
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reg_start, reg_size);
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}
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if ((mem_start < reg_start) &&
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((mem_start + mem_size) > reg_start)) {
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/* Guarantee that the memory partition doesn't overlap the
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* registers partition */
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wl1251_debug(DEBUG_SPI, "End of partition[0] is "
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"overlapping partition[1]. Adjusted.");
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mem_size = reg_start - mem_start;
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wl1251_debug(DEBUG_SPI, "mem_start %08X mem_size %08X",
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mem_start, mem_size);
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wl1251_debug(DEBUG_SPI, "reg_start %08X reg_size %08X",
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reg_start, reg_size);
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} else if ((reg_start < mem_start) &&
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((reg_start + reg_size) > mem_start)) {
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/* Guarantee that the register partition doesn't overlap the
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* memory partition */
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wl1251_debug(DEBUG_SPI, "End of partition[1] is"
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" overlapping partition[0]. Adjusted.");
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reg_size = mem_start - reg_start;
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wl1251_debug(DEBUG_SPI, "mem_start %08X mem_size %08X",
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mem_start, mem_size);
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wl1251_debug(DEBUG_SPI, "reg_start %08X reg_size %08X",
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reg_start, reg_size);
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}
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partition[0].start = mem_start;
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partition[0].size = mem_size;
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partition[1].start = reg_start;
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partition[1].size = reg_size;
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wl->physical_mem_addr = mem_start;
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wl->physical_reg_addr = reg_start;
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wl->virtual_mem_addr = 0;
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wl->virtual_reg_addr = mem_size;
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wl->if_ops->write(wl, HW_ACCESS_PART0_SIZE_ADDR, partition,
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sizeof(partition));
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}
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