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0f4e31222a
Separate the debugging macros and other definitions to a new debug.h file. This is be needed because the sdio and spi modules don't need to depend on the wl12xx module anymore, but still need to include wl12xx.h. Currently they do depend on it, because of the debugging global that wl12xx exports. A future patch will remove this dependency. Signed-off-by: Luciano Coelho <coelho@ti.com>
185 lines
5.3 KiB
C
185 lines
5.3 KiB
C
/*
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* This file is part of wl1271
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*
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* Copyright (C) 2008-2010 Nokia Corporation
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*
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* Contact: Luciano Coelho <luciano.coelho@nokia.com>
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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 <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/spi/spi.h>
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#include <linux/interrupt.h>
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#include "wl12xx.h"
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#include "debug.h"
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#include "wl12xx_80211.h"
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#include "io.h"
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#include "tx.h"
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#define OCP_CMD_LOOP 32
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#define OCP_CMD_WRITE 0x1
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#define OCP_CMD_READ 0x2
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#define OCP_READY_MASK BIT(18)
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#define OCP_STATUS_MASK (BIT(16) | BIT(17))
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#define OCP_STATUS_NO_RESP 0x00000
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#define OCP_STATUS_OK 0x10000
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#define OCP_STATUS_REQ_FAILED 0x20000
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#define OCP_STATUS_RESP_ERROR 0x30000
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bool wl1271_set_block_size(struct wl1271 *wl)
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{
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if (wl->if_ops->set_block_size) {
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wl->if_ops->set_block_size(wl->dev, WL12XX_BUS_BLOCK_SIZE);
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return true;
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}
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return false;
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}
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void wl1271_disable_interrupts(struct wl1271 *wl)
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{
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disable_irq(wl->irq);
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}
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void wl1271_enable_interrupts(struct wl1271 *wl)
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{
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enable_irq(wl->irq);
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}
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/* Set the SPI partitions to access the chip addresses
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*
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* To simplify driver code, a fixed (virtual) memory map is defined for
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* register and memory addresses. Because in the chipset, in different stages
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* of operation, those addresses will move around, an address translation
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* mechanism is required.
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*
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* There are four partitions (three memory and one register partition),
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* which are mapped to two different areas of the hardware memory.
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*
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* Virtual address
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* space
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*
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* | |
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* ...+----+--> mem.start
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* Physical address ... | |
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* space ... | | [PART_0]
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* ... | |
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* 00000000 <--+----+... ...+----+--> mem.start + mem.size
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* | | ... | |
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* |MEM | ... | |
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* | | ... | |
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* mem.size <--+----+... | | {unused area)
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* | | ... | |
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* |REG | ... | |
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* mem.size | | ... | |
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* + <--+----+... ...+----+--> reg.start
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* reg.size | | ... | |
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* |MEM2| ... | | [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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int wl1271_set_partition(struct wl1271 *wl,
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struct wl1271_partition_set *p)
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{
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/* copy partition info */
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memcpy(&wl->part, p, sizeof(*p));
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wl1271_debug(DEBUG_SPI, "mem_start %08X mem_size %08X",
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p->mem.start, p->mem.size);
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wl1271_debug(DEBUG_SPI, "reg_start %08X reg_size %08X",
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p->reg.start, p->reg.size);
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wl1271_debug(DEBUG_SPI, "mem2_start %08X mem2_size %08X",
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p->mem2.start, p->mem2.size);
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wl1271_debug(DEBUG_SPI, "mem3_start %08X mem3_size %08X",
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p->mem3.start, p->mem3.size);
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/* write partition info to the chipset */
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wl1271_raw_write32(wl, HW_PART0_START_ADDR, p->mem.start);
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wl1271_raw_write32(wl, HW_PART0_SIZE_ADDR, p->mem.size);
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wl1271_raw_write32(wl, HW_PART1_START_ADDR, p->reg.start);
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wl1271_raw_write32(wl, HW_PART1_SIZE_ADDR, p->reg.size);
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wl1271_raw_write32(wl, HW_PART2_START_ADDR, p->mem2.start);
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wl1271_raw_write32(wl, HW_PART2_SIZE_ADDR, p->mem2.size);
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wl1271_raw_write32(wl, HW_PART3_START_ADDR, p->mem3.start);
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return 0;
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}
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EXPORT_SYMBOL_GPL(wl1271_set_partition);
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void wl1271_io_reset(struct wl1271 *wl)
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{
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if (wl->if_ops->reset)
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wl->if_ops->reset(wl->dev);
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}
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void wl1271_io_init(struct wl1271 *wl)
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{
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if (wl->if_ops->init)
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wl->if_ops->init(wl->dev);
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}
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void wl1271_top_reg_write(struct wl1271 *wl, int addr, u16 val)
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{
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/* write address >> 1 + 0x30000 to OCP_POR_CTR */
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addr = (addr >> 1) + 0x30000;
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wl1271_write32(wl, OCP_POR_CTR, addr);
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/* write value to OCP_POR_WDATA */
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wl1271_write32(wl, OCP_DATA_WRITE, val);
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/* write 1 to OCP_CMD */
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wl1271_write32(wl, OCP_CMD, OCP_CMD_WRITE);
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}
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u16 wl1271_top_reg_read(struct wl1271 *wl, int addr)
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{
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u32 val;
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int timeout = OCP_CMD_LOOP;
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/* write address >> 1 + 0x30000 to OCP_POR_CTR */
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addr = (addr >> 1) + 0x30000;
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wl1271_write32(wl, OCP_POR_CTR, addr);
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/* write 2 to OCP_CMD */
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wl1271_write32(wl, OCP_CMD, OCP_CMD_READ);
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/* poll for data ready */
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do {
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val = wl1271_read32(wl, OCP_DATA_READ);
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} while (!(val & OCP_READY_MASK) && --timeout);
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if (!timeout) {
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wl1271_warning("Top register access timed out.");
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return 0xffff;
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}
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/* check data status and return if OK */
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if ((val & OCP_STATUS_MASK) == OCP_STATUS_OK)
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return val & 0xffff;
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else {
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wl1271_warning("Top register access returned error.");
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return 0xffff;
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}
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}
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