/*
* Copyright ( c ) 2008 - 2009 Atheros Communications Inc .
* Copyright ( c ) 2009 Gabor Juhos < juhosg @ openwrt . org >
* Copyright ( c ) 2009 Imre Kaloz < kaloz @ openwrt . org >
*
* Permission to use , copy , modify , and / or distribute this software for any
* purpose with or without fee is hereby granted , provided that the above
* copyright notice and this permission notice appear in all copies .
*
* THE SOFTWARE IS PROVIDED " AS IS " AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS . IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL , DIRECT , INDIRECT , OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE , DATA OR PROFITS , WHETHER IN AN
* ACTION OF CONTRACT , NEGLIGENCE OR OTHER TORTIOUS ACTION , ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE .
*/
#include <linux/module.h>
#include <linux/nl80211.h>
#include <linux/platform_device.h>
#include <linux/etherdevice.h>
#include <ath25_platform.h>
#include "ath5k.h"
#include "debug.h"
#include "base.h"
#include "reg.h"
/* return bus cachesize in 4B word units */
static void ath5k_ahb_read_cachesize(struct ath_common *common, int *csz)
{
*csz = L1_CACHE_BYTES >> 2 ;
}
static bool
ath5k_ahb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
{
struct ath5k_hw *ah = common->priv;
struct platform_device *pdev = to_platform_device(ah->dev);
struct ar231x_board_config *bcfg = dev_get_platdata(&pdev->dev);
u16 *eeprom, *eeprom_end;
eeprom = (u16 *) bcfg->radio;
eeprom_end = ((void *) bcfg->config) + BOARD_CONFIG_BUFSZ;
eeprom += off;
if (eeprom > eeprom_end)
return false ;
*data = *eeprom;
return true ;
}
int ath5k_hw_read_srev(struct ath5k_hw *ah)
{
struct platform_device *pdev = to_platform_device(ah->dev);
struct ar231x_board_config *bcfg = dev_get_platdata(&pdev->dev);
ah->ah_mac_srev = bcfg->devid;
return 0 ;
}
static int ath5k_ahb_eeprom_read_mac(struct ath5k_hw *ah, u8 *mac)
{
struct platform_device *pdev = to_platform_device(ah->dev);
struct ar231x_board_config *bcfg = dev_get_platdata(&pdev->dev);
u8 *cfg_mac;
if (to_platform_device(ah->dev)->id == 0 )
cfg_mac = bcfg->config->wlan0_mac;
else
cfg_mac = bcfg->config->wlan1_mac;
memcpy(mac, cfg_mac, ETH_ALEN);
return 0 ;
}
static const struct ath_bus_ops ath_ahb_bus_ops = {
.ath_bus_type = ATH_AHB,
.read_cachesize = ath5k_ahb_read_cachesize,
.eeprom_read = ath5k_ahb_eeprom_read,
.eeprom_read_mac = ath5k_ahb_eeprom_read_mac,
};
/*Initialization*/
static int ath_ahb_probe(struct platform_device *pdev)
{
struct ar231x_board_config *bcfg = dev_get_platdata(&pdev->dev);
struct ath5k_hw *ah;
struct ieee80211_hw *hw;
struct resource *res;
void __iomem *mem;
int irq;
int ret = 0 ;
u32 reg;
if (!dev_get_platdata(&pdev->dev)) {
dev_err(&pdev->dev, "no platform data specified\n" );
ret = -EINVAL;
goto err_out;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0 );
if (res == NULL) {
dev_err(&pdev->dev, "no memory resource found\n" );
ret = -ENXIO;
goto err_out;
}
mem = ioremap(res->start, resource_size(res));
if (mem == NULL) {
dev_err(&pdev->dev, "ioremap failed\n" );
ret = -ENOMEM;
goto err_out;
}
irq = platform_get_irq(pdev, 0 );
if (irq < 0 ) {
ret = irq;
goto err_iounmap;
}
hw = ieee80211_alloc_hw(sizeof (struct ath5k_hw), &ath5k_hw_ops);
if (hw == NULL) {
dev_err(&pdev->dev, "no memory for ieee80211_hw\n" );
ret = -ENOMEM;
goto err_iounmap;
}
ah = hw->priv;
ah->hw = hw;
ah->dev = &pdev->dev;
ah->iobase = mem;
ah->irq = irq;
ah->devid = bcfg->devid;
if (bcfg->devid >= AR5K_SREV_AR2315_R6) {
/* Enable WMAC AHB arbitration */
reg = ioread32((void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
reg |= AR5K_AR2315_AHB_ARB_CTL_WLAN;
iowrite32(reg, (void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
/* Enable global WMAC swapping */
reg = ioread32((void __iomem *) AR5K_AR2315_BYTESWAP);
reg |= AR5K_AR2315_BYTESWAP_WMAC;
iowrite32(reg, (void __iomem *) AR5K_AR2315_BYTESWAP);
} else {
/* Enable WMAC DMA access (assuming 5312 or 231x*/
/* TODO: check other platforms */
reg = ioread32((void __iomem *) AR5K_AR5312_ENABLE);
if (to_platform_device(ah->dev)->id == 0 )
reg |= AR5K_AR5312_ENABLE_WLAN0;
else
reg |= AR5K_AR5312_ENABLE_WLAN1;
iowrite32(reg, (void __iomem *) AR5K_AR5312_ENABLE);
/*
* On a dual - band AR5312 , the multiband radio is only
* used as pass - through . Disable 2 GHz support in the
* driver for it
*/
if (to_platform_device(ah->dev)->id == 0 &&
(bcfg->config->flags & (BD_WLAN0 | BD_WLAN1)) ==
(BD_WLAN1 | BD_WLAN0))
ah->ah_capabilities.cap_needs_2GHz_ovr = true ;
else
ah->ah_capabilities.cap_needs_2GHz_ovr = false ;
}
ret = ath5k_init_ah(ah, &ath_ahb_bus_ops);
if (ret != 0 ) {
dev_err(&pdev->dev, "failed to attach device, err=%d\n" , ret);
ret = -ENODEV;
goto err_free_hw;
}
platform_set_drvdata(pdev, hw);
return 0 ;
err_free_hw:
ieee80211_free_hw(hw);
err_iounmap:
iounmap(mem);
err_out:
return ret;
}
static void ath_ahb_remove(struct platform_device *pdev)
{
struct ar231x_board_config *bcfg = dev_get_platdata(&pdev->dev);
struct ieee80211_hw *hw = platform_get_drvdata(pdev);
struct ath5k_hw *ah;
u32 reg;
if (!hw)
return ;
ah = hw->priv;
if (bcfg->devid >= AR5K_SREV_AR2315_R6) {
/* Disable WMAC AHB arbitration */
reg = ioread32((void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
reg &= ~AR5K_AR2315_AHB_ARB_CTL_WLAN;
iowrite32(reg, (void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
} else {
/*Stop DMA access */
reg = ioread32((void __iomem *) AR5K_AR5312_ENABLE);
if (to_platform_device(ah->dev)->id == 0 )
reg &= ~AR5K_AR5312_ENABLE_WLAN0;
else
reg &= ~AR5K_AR5312_ENABLE_WLAN1;
iowrite32(reg, (void __iomem *) AR5K_AR5312_ENABLE);
}
ath5k_deinit_ah(ah);
iounmap(ah->iobase);
ieee80211_free_hw(hw);
}
static struct platform_driver ath_ahb_driver = {
.probe = ath_ahb_probe,
.remove = ath_ahb_remove,
.driver = {
.name = "ar231x-wmac" ,
},
};
module_platform_driver(ath_ahb_driver);
Messung V0.5 in Prozent C=96 H=87 G=91
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-10-02)
¤
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