213 lines
6.3 KiB
C
213 lines
6.3 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 "wlcore.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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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 wlcore_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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EXPORT_SYMBOL_GPL(wlcore_disable_interrupts);
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void wlcore_disable_interrupts_nosync(struct wl1271 *wl)
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{
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disable_irq_nosync(wl->irq);
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}
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EXPORT_SYMBOL_GPL(wlcore_disable_interrupts_nosync);
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void wlcore_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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EXPORT_SYMBOL_GPL(wlcore_enable_interrupts);
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void wlcore_synchronize_interrupts(struct wl1271 *wl)
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{
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synchronize_irq(wl->irq);
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}
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EXPORT_SYMBOL_GPL(wlcore_synchronize_interrupts);
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int wlcore_translate_addr(struct wl1271 *wl, int addr)
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{
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struct wlcore_partition_set *part = &wl->curr_part;
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/*
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* To translate, first check to which window of addresses the
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* particular address belongs. Then subtract the starting address
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* of that window from the address. Then, add offset of the
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* translated region.
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*
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* The translated regions occur next to each other in physical device
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* memory, so just add the sizes of the preceding address regions to
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* get the offset to the new region.
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*/
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if ((addr >= part->mem.start) &&
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(addr < part->mem.start + part->mem.size))
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return addr - part->mem.start;
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else if ((addr >= part->reg.start) &&
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(addr < part->reg.start + part->reg.size))
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return addr - part->reg.start + part->mem.size;
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else if ((addr >= part->mem2.start) &&
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(addr < part->mem2.start + part->mem2.size))
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return addr - part->mem2.start + part->mem.size +
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part->reg.size;
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else if ((addr >= part->mem3.start) &&
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(addr < part->mem3.start + part->mem3.size))
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return addr - part->mem3.start + part->mem.size +
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part->reg.size + part->mem2.size;
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WARN(1, "HW address 0x%x out of range", addr);
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return 0;
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}
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EXPORT_SYMBOL_GPL(wlcore_translate_addr);
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/* Set the 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 wlcore_set_partition(struct wl1271 *wl,
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const struct wlcore_partition_set *p)
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{
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int ret;
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/* copy partition info */
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memcpy(&wl->curr_part, p, sizeof(*p));
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wl1271_debug(DEBUG_IO, "mem_start %08X mem_size %08X",
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p->mem.start, p->mem.size);
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wl1271_debug(DEBUG_IO, "reg_start %08X reg_size %08X",
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p->reg.start, p->reg.size);
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wl1271_debug(DEBUG_IO, "mem2_start %08X mem2_size %08X",
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p->mem2.start, p->mem2.size);
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wl1271_debug(DEBUG_IO, "mem3_start %08X mem3_size %08X",
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p->mem3.start, p->mem3.size);
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ret = wlcore_raw_write32(wl, HW_PART0_START_ADDR, p->mem.start);
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if (ret < 0)
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goto out;
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ret = wlcore_raw_write32(wl, HW_PART0_SIZE_ADDR, p->mem.size);
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if (ret < 0)
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goto out;
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ret = wlcore_raw_write32(wl, HW_PART1_START_ADDR, p->reg.start);
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if (ret < 0)
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goto out;
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ret = wlcore_raw_write32(wl, HW_PART1_SIZE_ADDR, p->reg.size);
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if (ret < 0)
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goto out;
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ret = wlcore_raw_write32(wl, HW_PART2_START_ADDR, p->mem2.start);
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if (ret < 0)
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goto out;
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ret = wlcore_raw_write32(wl, HW_PART2_SIZE_ADDR, p->mem2.size);
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if (ret < 0)
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goto out;
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/* wl12xx only: We don't need the size of the last partition,
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* as it is automatically calculated based on the total memory
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* size and the sizes of the previous partitions.
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*
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* wl18xx re-defines the HW_PART3 addresses for logger over
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* SDIO support. wl12xx is expecting the write to
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* HW_PART3_START_ADDR at offset 24. This creates conflict
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* between the addresses.
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* In order to fix this the expected value is written to
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* HW_PART3_SIZE_ADDR instead which is at offset 24 after changes.
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*/
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ret = wlcore_raw_write32(wl, HW_PART3_START_ADDR, p->mem3.start);
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if (ret < 0)
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goto out;
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ret = wlcore_raw_write32(wl, HW_PART3_SIZE_ADDR, p->mem3.size);
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if (ret < 0)
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goto out;
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out:
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return ret;
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}
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EXPORT_SYMBOL_GPL(wlcore_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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