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openwrt/package/kernel/mac80211/patches/300-Revert-ath5k-Remove-AHB...

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From: Felix Fietkau <nbd@openwrt.org>
Date: Sat, 27 Sep 2014 15:57:09 +0200
Subject: [PATCH] Revert "ath5k: Remove AHB bus support"
This reverts commit 093ec3c5337434f40d77c1af06c139da3e5ba6dc.
---
create mode 100644 drivers/net/wireless/ath/ath5k/ahb.c
--- a/drivers/net/wireless/ath/ath5k/Kconfig
+++ b/drivers/net/wireless/ath/ath5k/Kconfig
@@ -1,13 +1,14 @@
config ATH5K
tristate "Atheros 5xxx wireless cards support"
depends on m
- depends on PCI && MAC80211
+ depends on (PCI || ATHEROS_AR231X) && MAC80211
select ATH_COMMON
select MAC80211_LEDS
select BACKPORT_LEDS_CLASS
select BACKPORT_NEW_LEDS
select BACKPORT_AVERAGE
- select ATH5K_PCI
+ select ATH5K_AHB if (ATHEROS_AR231X && !PCI)
+ select ATH5K_PCI if (!ATHEROS_AR231X && PCI)
---help---
This module adds support for wireless adapters based on
Atheros 5xxx chipset.
@@ -52,9 +53,16 @@ config ATH5K_TRACER
If unsure, say N.
+config ATH5K_AHB
+ bool "Atheros 5xxx AHB bus support"
+ depends on (ATHEROS_AR231X && !PCI)
+ ---help---
+ This adds support for WiSoC type chipsets of the 5xxx Atheros
+ family.
+
config ATH5K_PCI
bool "Atheros 5xxx PCI bus support"
- depends on PCI
+ depends on (!ATHEROS_AR231X && PCI)
---help---
This adds support for PCI type chipsets of the 5xxx Atheros
family.
--- a/drivers/net/wireless/ath/ath5k/Makefile
+++ b/drivers/net/wireless/ath/ath5k/Makefile
@@ -17,5 +17,6 @@ ath5k-y += ani.o
ath5k-y += sysfs.o
ath5k-y += mac80211-ops.o
ath5k-$(CPTCFG_ATH5K_DEBUG) += debug.o
+ath5k-$(CPTCFG_ATH5K_AHB) += ahb.o
ath5k-$(CPTCFG_ATH5K_PCI) += pci.o
obj-$(CPTCFG_ATH5K) += ath5k.o
--- /dev/null
+++ b/drivers/net/wireless/ath/ath5k/ahb.c
@@ -0,0 +1,234 @@
+/*
+ * 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/nl80211.h>
+#include <linux/platform_device.h>
+#include <linux/etherdevice.h>
+#include <linux/export.h>
+#include <ar231x_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_nocache(res->start, resource_size(res));
+ if (mem == NULL) {
+ dev_err(&pdev->dev, "ioremap failed\n");
+ ret = -ENOMEM;
+ goto err_out;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "no IRQ resource found\n");
+ ret = -ENXIO;
+ goto err_iounmap;
+ }
+
+ irq = res->start;
+
+ 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 int 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 0;
+
+ 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);
+
+ return 0;
+}
+
+static struct platform_driver ath_ahb_driver = {
+ .probe = ath_ahb_probe,
+ .remove = ath_ahb_remove,
+ .driver = {
+ .name = "ar231x-wmac",
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(ath_ahb_driver);
--- a/drivers/net/wireless/ath/ath5k/ath5k.h
+++ b/drivers/net/wireless/ath/ath5k/ath5k.h
@@ -1647,6 +1647,32 @@ static inline struct ath_regulatory *ath
return &(ath5k_hw_common(ah)->regulatory);
}
+#ifdef CONFIG_ATHEROS_AR231X
+#define AR5K_AR2315_PCI_BASE ((void __iomem *)0xb0100000)
+
+static inline void __iomem *ath5k_ahb_reg(struct ath5k_hw *ah, u16 reg)
+{
+ /* On AR2315 and AR2317 the PCI clock domain registers
+ * are outside of the WMAC register space */
+ if (unlikely((reg >= 0x4000) && (reg < 0x5000) &&
+ (ah->ah_mac_srev >= AR5K_SREV_AR2315_R6)))
+ return AR5K_AR2315_PCI_BASE + reg;
+
+ return ah->iobase + reg;
+}
+
+static inline u32 ath5k_hw_reg_read(struct ath5k_hw *ah, u16 reg)
+{
+ return ioread32(ath5k_ahb_reg(ah, reg));
+}
+
+static inline void ath5k_hw_reg_write(struct ath5k_hw *ah, u32 val, u16 reg)
+{
+ iowrite32(val, ath5k_ahb_reg(ah, reg));
+}
+
+#else
+
static inline u32 ath5k_hw_reg_read(struct ath5k_hw *ah, u16 reg)
{
return ioread32(ah->iobase + reg);
@@ -1657,6 +1683,8 @@ static inline void ath5k_hw_reg_write(st
iowrite32(val, ah->iobase + reg);
}
+#endif
+
static inline enum ath_bus_type ath5k_get_bus_type(struct ath5k_hw *ah)
{
return ath5k_hw_common(ah)->bus_ops->ath_bus_type;
--- a/drivers/net/wireless/ath/ath5k/base.c
+++ b/drivers/net/wireless/ath/ath5k/base.c
@@ -99,6 +99,15 @@ static int ath5k_reset(struct ath5k_hw *
/* Known SREVs */
static const struct ath5k_srev_name srev_names[] = {
+#ifdef CONFIG_ATHEROS_AR231X
+ { "5312", AR5K_VERSION_MAC, AR5K_SREV_AR5312_R2 },
+ { "5312", AR5K_VERSION_MAC, AR5K_SREV_AR5312_R7 },
+ { "2313", AR5K_VERSION_MAC, AR5K_SREV_AR2313_R8 },
+ { "2315", AR5K_VERSION_MAC, AR5K_SREV_AR2315_R6 },
+ { "2315", AR5K_VERSION_MAC, AR5K_SREV_AR2315_R7 },
+ { "2317", AR5K_VERSION_MAC, AR5K_SREV_AR2317_R1 },
+ { "2317", AR5K_VERSION_MAC, AR5K_SREV_AR2317_R2 },
+#else
{ "5210", AR5K_VERSION_MAC, AR5K_SREV_AR5210 },
{ "5311", AR5K_VERSION_MAC, AR5K_SREV_AR5311 },
{ "5311A", AR5K_VERSION_MAC, AR5K_SREV_AR5311A },
@@ -117,6 +126,7 @@ static const struct ath5k_srev_name srev
{ "5418", AR5K_VERSION_MAC, AR5K_SREV_AR5418 },
{ "2425", AR5K_VERSION_MAC, AR5K_SREV_AR2425 },
{ "2417", AR5K_VERSION_MAC, AR5K_SREV_AR2417 },
+#endif
{ "xxxxx", AR5K_VERSION_MAC, AR5K_SREV_UNKNOWN },
{ "5110", AR5K_VERSION_RAD, AR5K_SREV_RAD_5110 },
{ "5111", AR5K_VERSION_RAD, AR5K_SREV_RAD_5111 },
@@ -132,6 +142,10 @@ static const struct ath5k_srev_name srev
{ "5413", AR5K_VERSION_RAD, AR5K_SREV_RAD_5413 },
{ "5424", AR5K_VERSION_RAD, AR5K_SREV_RAD_5424 },
{ "5133", AR5K_VERSION_RAD, AR5K_SREV_RAD_5133 },
+#ifdef CONFIG_ATHEROS_AR231X
+ { "2316", AR5K_VERSION_RAD, AR5K_SREV_RAD_2316 },
+ { "2317", AR5K_VERSION_RAD, AR5K_SREV_RAD_2317 },
+#endif
{ "xxxxx", AR5K_VERSION_RAD, AR5K_SREV_UNKNOWN },
};
--- a/drivers/net/wireless/ath/ath5k/led.c
+++ b/drivers/net/wireless/ath/ath5k/led.c
@@ -163,14 +163,20 @@ int ath5k_init_leds(struct ath5k_hw *ah)
{
int ret = 0;
struct ieee80211_hw *hw = ah->hw;
+#ifndef CONFIG_ATHEROS_AR231X
struct pci_dev *pdev = ah->pdev;
+#endif
char name[ATH5K_LED_MAX_NAME_LEN + 1];
const struct pci_device_id *match;
if (!ah->pdev)
return 0;
+#ifdef CONFIG_ATHEROS_AR231X
+ match = NULL;
+#else
match = pci_match_id(&ath5k_led_devices[0], pdev);
+#endif
if (match) {
__set_bit(ATH_STAT_LEDSOFT, ah->status);
ah->led_pin = ATH_PIN(match->driver_data);
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