atheros: clean up the 2.6.28 port in preparation for pushing it upstream

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14967 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 281 insertions, 0 deletions

diff --git a/package/madwifi/patches/410-ar231x_2.6.28.patch b/package/madwifi/patches/410-ar231x_2.6.28.patch
new file mode 100644
index 0000000000..87177c3986
--- /dev/null
+++ b/package/madwifi/patches/410-ar231x_2.6.28.patch
@@ -0,0 +1,281 @@
+--- a/ath/if_ath_ahb.c
++++ b/ath/if_ath_ahb.c
+@@ -33,20 +33,15 @@
+ #include "if_ath_ahb.h"
+ #include "ah_soc.h"
+ 
+-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
+-#error "Kernel versions older than 2.6.19 are not supported!"
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)
++#include <ar231x_platform.h>
+ #endif
+ 
+ struct ath_ahb_softc {
+ 	struct ath_softc	aps_sc;
+-#ifdef CONFIG_PM
+-	u32 aps_pmstate[16];
+-#endif
++	struct ar531x_config aps_config;
+ };
+ 
+-static struct ath_ahb_softc *sclist[2] = {NULL, NULL};
+-static u_int8_t num_activesc = 0;
+-
+ /*
+  * Module glue.
+  */
+@@ -101,13 +96,13 @@ ahb_enable_wmac(u_int16_t devid, u_int16
+ 		while (REG_READ(AR5315_PCI_MAC_PCICFG) & AR5315_PCI_MAC_PCICFG_SPWR_DN);
+ 	} else {
+ 		switch (wlanNum) {
+-		case AR531X_WLAN0_NUM:
++		case 0:
+ 			reset = (AR531X_RESET_WLAN0 |
+ 				AR531X_RESET_WARM_WLAN0_MAC |
+ 				AR531X_RESET_WARM_WLAN0_BB);
+ 			enable = AR531X_ENABLE_WLAN0;
+ 			break;
+-		case AR531X_WLAN1_NUM:
++		case 1:
+ 			reset = (AR531X_RESET_WLAN1 |
+ 				AR531X_RESET_WARM_WLAN1_MAC |
+ 				AR531X_RESET_WARM_WLAN1_BB);
+@@ -144,10 +139,10 @@ ahb_disable_wmac(u_int16_t devid, u_int1
+ 		*en &= ~AR5315_ARB_WLAN;
+ 	} else {
+ 		switch (wlanNum) {
+-		case AR531X_WLAN0_NUM:
++		case 0:
+ 			enable = AR531X_ENABLE_WLAN0;
+ 			break;
+-		case AR531X_WLAN1_NUM:
++		case 1:
+ 			enable = AR531X_ENABLE_WLAN1;
+ 			break;
+ 		default:
+@@ -159,29 +154,6 @@ ahb_disable_wmac(u_int16_t devid, u_int1
+ }
+ 
+ 
+-static int
+-exit_ath_wmac(u_int16_t wlanNum, struct ar531x_config *config)
+-{
+-	struct ath_ahb_softc *sc = sclist[wlanNum];
+-	struct net_device *dev;
+-	u_int16_t devid;
+-
+-	if (sc == NULL)
+-		return -ENODEV; /* XXX: correct return value? */
+-
+-	dev = sc->aps_sc.sc_dev;
+-	ath_detach(dev);
+-	if (dev->irq)
+-		free_irq(dev->irq, dev);
+-	devid = sc->aps_sc.devid;
+-	config->tag = (void *)((unsigned long) devid);
+-
+-	ahb_disable_wmac(devid, wlanNum);
+-	free_netdev(dev);
+-	sclist[wlanNum] = NULL;
+-	return 0;
+-}
+-
+ static const char ubnt[] = "Ubiquiti Networks";
+ static const struct ath_hw_detect cards[] = {
+ 	{
+@@ -266,6 +238,114 @@ static const struct ath_hw_detect cards[
+ 	},
+ };
+ 
++static void
++ahb_hw_detect(struct ath_ahb_softc *sc, const char *radio)
++{
++	u16 *radio_data = (u16 *) radio;
++	if (radio_data) {
++		u16 vendor, id, subvendor, subid;
++		vendor = radio_data[1];
++		id = radio_data[0];
++		subvendor = radio_data[8];
++		subid = radio_data[7];
++		ath_hw_detect(&sc->aps_sc, cards, ARRAY_SIZE(cards), vendor, id, subvendor, subid);
++	}
++}
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)
++
++static int ahb_wmac_probe(struct platform_device *pdev)
++{
++	struct ar231x_board_config *bcfg = pdev->dev.platform_data;
++	struct ath_ahb_softc *sc;
++	struct net_device *dev;
++	struct resource *res;
++	const char *athname;
++	int err;
++
++	ahb_enable_wmac(bcfg->devid, pdev->id);
++	dev = alloc_netdev(sizeof(struct ath_ahb_softc), "wifi%d", ether_setup);
++	if (!dev)
++		return -ENOMEM;
++
++	sc = dev->priv;
++	sc->aps_sc.sc_dev = dev;
++
++	dev->irq = platform_get_irq(pdev, 0);
++	if (dev->irq <= 0) {
++		printk("%s: Cannot find IRQ resource\n", dev->name);
++		goto error;
++	}
++
++	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	if (!res) {
++		printk("%s: Cannot find MMIO resource\n", dev->name);
++		goto error;
++	}
++
++	dev->mem_start = KSEG1ADDR(res->start);
++	dev->mem_end = KSEG1ADDR(res->end);
++	sc->aps_sc.sc_iobase = (void __iomem *) dev->mem_start;
++	sc->aps_sc.sc_bdev = NULL;
++
++	/* bus information for the HAL */
++	sc->aps_config.board = (const struct ar531x_boarddata *) bcfg->config;
++	sc->aps_config.radio = bcfg->radio;
++	sc->aps_config.unit = pdev->id;
++	sc->aps_config.tag = NULL;
++
++	err = ath_attach(bcfg->devid, dev, &sc->aps_config);
++	if (err != 0) {
++		printk("%s: ath_attach failed: %d\n", dev->name, err);
++		goto error;
++	}
++
++	athname = ath_hal_probe(ATHEROS_VENDOR_ID, bcfg->devid);
++	printk(KERN_INFO "%s: %s: %s: mem=0x%lx, irq=%d\n",
++		dev_info, dev->name, athname ? athname : "Atheros ???", dev->mem_start, dev->irq);
++
++	if (request_irq(dev->irq, ath_intr, IRQF_SHARED|IRQF_DISABLED, dev->name, dev)) {
++		printk(KERN_WARNING "%s: %s: request_irq failed\n", dev_info, dev->name);
++		goto error;
++	}
++
++	sc->aps_sc.sc_softled = 1; /* SoftLED over GPIO */
++	sc->aps_sc.sc_ledpin = bcfg->config->sysLedGpio;
++	sc->aps_sc.sc_invalid = 0;
++	ahb_hw_detect(sc, bcfg->radio);
++	platform_set_drvdata(pdev, dev);
++	return 0;
++
++error_dev:
++	free_irq(dev->irq, dev);
++error:
++	free_netdev(dev);
++
++	return -ENODEV;
++}
++
++
++static int ahb_wmac_remove(struct platform_device *pdev)
++{
++	struct ar231x_board_config *bcfg = pdev->dev.platform_data;
++	struct net_device *dev;
++
++	dev = platform_get_drvdata(pdev);
++	ath_detach(dev);
++
++	if (dev->irq)
++		free_irq(dev->irq, dev);
++
++	ahb_disable_wmac(bcfg->devid, pdev->id);
++	free_netdev(dev);
++
++	return 0;
++}
++
++#else
++
++static struct ath_ahb_softc *sclist[2] = {NULL, NULL};
++
+ static int
+ init_ath_wmac(u_int16_t devid, u_int16_t wlanNum, struct ar531x_config *config)
+ {
+@@ -318,7 +398,7 @@ init_ath_wmac(u_int16_t devid, u_int16_t
+ 	sc->aps_sc.sc_iobase = (void __iomem *) dev->mem_start;
+ 	sc->aps_sc.sc_bdev = NULL;
+ 
+-	if (request_irq(dev->irq, ath_intr, IRQF_SHARED, dev->name, dev)) {
++	if (request_irq(dev->irq, ath_intr, IRQF_SHARED|IRQF_DISABLED, dev->name, dev)) {
+ 		printk(KERN_WARNING "%s: %s: request_irq failed\n", dev_info, dev->name);
+ 		goto bad3;
+ 	}
+@@ -328,21 +408,12 @@ init_ath_wmac(u_int16_t devid, u_int16_t
+ 	athname = ath_hal_probe(ATHEROS_VENDOR_ID, devid);
+ 	printk(KERN_INFO "%s: %s: %s: mem=0x%lx, irq=%d\n",
+ 		dev_info, dev->name, athname ? athname : "Atheros ???", dev->mem_start, dev->irq);
+-	num_activesc++;
+ 	/* Ready to process interrupts */
+ 
+ 	sc->aps_sc.sc_softled = 1; /* SoftLED over GPIO */
+ 	sc->aps_sc.sc_ledpin = config->board->sysLedGpio;
+ 	sc->aps_sc.sc_invalid = 0;
+-	radio_data = (u16 *) config->radio;
+-	if (radio_data) {
+-		u16 vendor, id, subvendor, subid;
+-		vendor = radio_data[1];
+-		id = radio_data[0];
+-		subvendor = radio_data[8];
+-		subid = radio_data[7];
+-		ath_hw_detect(&sc->aps_sc, cards, ARRAY_SIZE(cards), vendor, id, subvendor, subid);
+-	}
++	ahb_hw_detect(sc, config->radio);
+ 
+ 	return 0;
+ 
+@@ -357,6 +428,29 @@ init_ath_wmac(u_int16_t devid, u_int16_t
+ 	return -ENODEV;
+ }
+ 
++static int
++exit_ath_wmac(u_int16_t wlanNum, struct ar531x_config *config)
++{
++	struct ath_ahb_softc *sc = sclist[wlanNum];
++	struct net_device *dev;
++	u_int16_t devid;
++
++	if (sc == NULL)
++		return -ENODEV; /* XXX: correct return value? */
++
++	dev = sc->aps_sc.sc_dev;
++	ath_detach(dev);
++	if (dev->irq)
++		free_irq(dev->irq, dev);
++	devid = sc->aps_sc.devid;
++	config->tag = (void *)((unsigned long) devid);
++
++	ahb_disable_wmac(devid, wlanNum);
++	free_netdev(dev);
++	sclist[wlanNum] = NULL;
++	return 0;
++}
++
+ static int ahb_wmac_probe(struct platform_device *pdev)
+ {
+ 	u_int16_t devid;
+@@ -377,11 +471,18 @@ static int ahb_wmac_remove(struct platfo
+ 	return 0;
+ }
+ 
++#endif
++
+ static struct platform_driver ahb_wmac_driver = {
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)
++	.driver.name = "ar231x-wmac",
++#else
+ 	.driver.name = "ar531x-wmac",
++#endif
+ 	.probe = ahb_wmac_probe,
+ 	.remove = ahb_wmac_remove
+ };
++
+ int
+ ath_ioctl_ethtool(struct ath_softc *sc, int cmd, void __user *addr)
+ {