[package] mac80211: add preliminary support for the AR913x SoCs

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13835 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 331 insertions, 0 deletions

diff --git a/package/mac80211/patches/407-ath9k-introduce-platform-driver-for-AHB-bus-support.patch b/package/mac80211/patches/407-ath9k-introduce-platform-driver-for-AHB-bus-support.patch
new file mode 100644
index 0000000000..255d090110
--- /dev/null
+++ b/package/mac80211/patches/407-ath9k-introduce-platform-driver-for-AHB-bus-support.patch
@@ -0,0 +1,331 @@
+From 9456893748c407d9fed06046308177edaca38450 Mon Sep 17 00:00:00 2001
+From: Gabor Juhos <juhosg@openwrt.org>
+Date: Fri, 2 Jan 2009 16:12:30 +0100
+Subject: [RFC 07/12] ath9k: introduce platform driver for AHB bus support
+
+This patch adds the platform_driver itself, and modifies the main driver
+to register it.
+
+Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
+Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
+---
+ drivers/net/wireless/ath9k/Makefile |    1 +
+ drivers/net/wireless/ath9k/ahb.c    |  258 +++++++++++++++++++++++++++++++++++
+ drivers/net/wireless/ath9k/core.h   |    8 +
+ drivers/net/wireless/ath9k/main.c   |   10 ++
+ 4 files changed, 277 insertions(+), 0 deletions(-)
+
+--- a/drivers/net/wireless/ath9k/Makefile
++++ b/drivers/net/wireless/ath9k/Makefile
+@@ -12,6 +12,7 @@ ath9k-y +=	hw.o \
+ 		rc.o
+ 
+ ath9k-$(CONFIG_PCI) += pci.o
++ath9k-$(CONFIG_ATHEROS_AR71XX) += ahb.o
+ ath9k-$(CONFIG_ATH9K_DEBUG) += debug.o
+ 
+ obj-$(CONFIG_ATH9K) += ath9k.o
+--- /dev/null
++++ b/drivers/net/wireless/ath9k/ahb.c
+@@ -0,0 +1,258 @@
++/*
++ * Copyright (c) 2008 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 "core.h"
++#include "reg.h"
++#include "hw.h"
++
++static dma_addr_t ath_ahb_map_single_to_device(struct ath_softc *sc,
++					       void *p, size_t size)
++{
++	return dma_map_single(NULL, p, size, DMA_TO_DEVICE);
++}
++
++static void ath_ahb_unmap_single_to_device(struct ath_softc *sc,
++					   dma_addr_t da, size_t size)
++{
++	dma_unmap_single(NULL, da, size, DMA_TO_DEVICE);
++}
++
++static dma_addr_t ath_ahb_map_single_from_device(struct ath_softc *sc,
++						 void *p, size_t size)
++{
++	return dma_map_single(NULL, p, size, DMA_FROM_DEVICE);
++}
++
++static void ath_ahb_unmap_single_from_device(struct ath_softc *sc,
++					     dma_addr_t da, size_t size)
++{
++	dma_unmap_single(NULL, da, size, DMA_FROM_DEVICE);
++}
++
++static int ath_ahb_dma_mapping_error(struct ath_softc *sc, dma_addr_t da)
++{
++	return dma_mapping_error(NULL, da);
++}
++
++static void ath_ahb_sync_single_for_cpu(struct ath_softc *sc, dma_addr_t da,
++				       size_t size)
++{
++	dma_sync_single_for_cpu(NULL, da, size, DMA_FROM_DEVICE);
++}
++
++static void *ath_ahb_dma_alloc(struct ath_softc *sc, size_t size,
++			       dma_addr_t *pda)
++{
++	return dma_alloc_coherent(NULL, size, pda, GFP_KERNEL);
++}
++
++static void ath_ahb_dma_free(struct ath_softc *sc, size_t size, void *p,
++			     dma_addr_t da)
++{
++	dma_free_coherent(NULL, size, p, da);
++}
++
++static void ath_ahb_reg_write(struct ath_hal *ah, unsigned reg, u32 val)
++{
++	__raw_writel(val, ah->ah_sh + reg);
++}
++
++static u32 ath_ahb_reg_read(struct ath_hal *ah, unsigned reg)
++{
++	return __raw_readl(ah->ah_sh + reg);
++}
++
++/* return bus cachesize in 4B word units */
++static void ath_ahb_read_cachesize(struct ath_softc *sc, int *csz)
++{
++	*csz = L1_CACHE_BYTES >> 2;
++}
++
++static void ath_ahb_cleanup(struct ath_softc *sc)
++{
++	struct platform_device *pdev = to_platform_device(sc->dev);
++	struct ieee80211_hw *hw = sc->hw;
++	struct resource *res;
++
++	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
++	if (res)
++		free_irq(res->start, sc);
++
++	ath_detach(sc);
++	iounmap(sc->mem);
++	ieee80211_free_hw(hw);
++	platform_set_drvdata(pdev, NULL);
++}
++
++static struct ath_bus_ops ath_ahb_bus_ops  = {
++	.dma_map_single_to_device = ath_ahb_map_single_to_device,
++	.dma_unmap_single_to_device = ath_ahb_unmap_single_to_device,
++	.dma_map_single_from_device = ath_ahb_map_single_from_device,
++	.dma_unmap_single_from_device = ath_ahb_unmap_single_from_device,
++	.dma_map_single_to_device = ath_ahb_map_single_to_device,
++	.dma_mapping_error = ath_ahb_dma_mapping_error,
++	.dma_sync_single_for_cpu = ath_ahb_sync_single_for_cpu,
++	.dma_alloc = ath_ahb_dma_alloc,
++	.dma_free = ath_ahb_dma_free,
++
++	.reg_read = ath_ahb_reg_read,
++	.reg_write = ath_ahb_reg_write,
++
++	.read_cachesize = ath_ahb_read_cachesize,
++
++	.cleanup = ath_ahb_cleanup,
++};
++
++static int ath_ahb_probe(struct platform_device *pdev)
++{
++	void __iomem *mem;
++	struct ath_softc *sc;
++	struct ieee80211_hw *hw;
++	struct resource *res;
++	int irq;
++	int ret = 0;
++	struct ath_hal *ah;
++
++	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, res->end - res->start + 1);
++	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 ath_softc), &ath9k_ops);
++	if (hw == NULL) {
++		dev_err(&pdev->dev, "no memory for ieee80211_hw\n");
++		ret = -ENOMEM;
++		goto err_iounmap;
++	}
++
++	hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
++		IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
++		IEEE80211_HW_SIGNAL_DBM |
++		IEEE80211_HW_NOISE_DBM;
++
++	hw->wiphy->interface_modes =
++		BIT(NL80211_IFTYPE_AP) |
++		BIT(NL80211_IFTYPE_STATION) |
++		BIT(NL80211_IFTYPE_ADHOC);
++
++	SET_IEEE80211_DEV(hw, &pdev->dev);
++	platform_set_drvdata(pdev, hw);
++
++	sc = hw->priv;
++	sc->hw = hw;
++	sc->dev = &pdev->dev;
++	sc->mem = mem;
++	sc->bus_ops = &ath_ahb_bus_ops;
++
++	ret = ath_attach(AR5416_AR9100_DEVID, sc);
++	if (ret != 0) {
++		dev_err(&pdev->dev, "failed to attach device, err=%d\n", ret);
++		ret = -ENODEV;
++		goto err_free_hw;
++	}
++
++	ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);
++	if (ret) {
++		dev_err(&pdev->dev, "request_irq failed, err=%d\n", ret);
++		ret = -EIO;
++		goto err_detach;
++	}
++
++	ah = sc->sc_ah;
++	printk(KERN_INFO
++	       "%s: Atheros AR%s MAC/BB Rev:%x, "
++	       "AR%s RF Rev:%x, mem=0x%lx, irq=%d\n",
++	       wiphy_name(hw->wiphy),
++	       ath_mac_bb_name(ah->ah_macVersion),
++	       ah->ah_macRev,
++	       ath_rf_name((ah->ah_analog5GhzRev & AR_RADIO_SREV_MAJOR)),
++	       ah->ah_phyRev,
++	       (unsigned long)mem, irq);
++
++	return 0;
++
++ err_detach:
++	ath_detach(sc);
++ err_free_hw:
++	ieee80211_free_hw(hw);
++	platform_set_drvdata(pdev, NULL);
++ err_iounmap:
++	iounmap(mem);
++ err_out:
++	return ret;
++}
++
++static int ath_ahb_remove(struct platform_device *pdev)
++{
++	struct ieee80211_hw *hw = platform_get_drvdata(pdev);
++
++	if (hw) {
++		struct resource *res;
++		struct ath_softc *sc = hw->priv;
++
++		res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
++		if (res)
++			free_irq(res->start, sc);
++
++		ath_detach(sc);
++		iounmap(sc->mem);
++		ieee80211_free_hw(hw);
++		platform_set_drvdata(pdev, NULL);
++	}
++
++	return 0;
++}
++
++static struct platform_driver ath_ahb_driver = {
++	.probe      = ath_ahb_probe,
++	.remove     = ath_ahb_remove,
++	.driver		= {
++		.name	= "ath9k",
++		.owner	= THIS_MODULE,
++	},
++};
++
++int ath_ahb_init(void)
++{
++	return platform_driver_register(&ath_ahb_driver);
++}
++
++void ath_ahb_exit(void)
++{
++	platform_driver_register(&ath_ahb_driver);
++}
+--- a/drivers/net/wireless/ath9k/core.h
++++ b/drivers/net/wireless/ath9k/core.h
+@@ -874,4 +874,12 @@ static inline int ath_pci_init(void) { r
+ static inline void ath_pci_exit(void) {};
+ #endif
+ 
++#ifdef CONFIG_ATHEROS_AR71XX
++int ath_ahb_init(void);
++void ath_ahb_exit(void);
++#else
++static inline int ath_ahb_init(void) { return 0; };
++static inline void ath_ahb_exit(void) {};
++#endif
++
+ #endif /* CORE_H */
+--- a/drivers/net/wireless/ath9k/main.c
++++ b/drivers/net/wireless/ath9k/main.c
+@@ -2533,8 +2533,17 @@ static int __init ath9k_init(void)
+ 		goto err_rate_unregister;
+ 	}
+ 
++	error = ath_ahb_init();
++	if (error < 0) {
++		error = -ENODEV;
++		goto err_pci_exit;
++	}
++
+ 	return 0;
+ 
++ err_pci_exit:
++	ath_pci_exit();
++
+  err_rate_unregister:
+ 	ath_rate_control_unregister();
+  err_out:
+@@ -2544,6 +2553,7 @@ module_init(ath9k_init);
+ 
+ static void __exit ath9k_exit(void)
+ {
++	ath_ahb_exit();
+ 	ath_pci_exit();
+ 	ath_rate_control_unregister();
+ 	printk(KERN_INFO "%s: Driver unloaded\n", dev_info);