1203c4805SLuis R. Rodriguez /* 2203c4805SLuis R. Rodriguez * Copyright (c) 2008-2009 Atheros Communications Inc. 3203c4805SLuis R. Rodriguez * Copyright (c) 2009 Gabor Juhos <juhosg@openwrt.org> 4203c4805SLuis R. Rodriguez * Copyright (c) 2009 Imre Kaloz <kaloz@openwrt.org> 5203c4805SLuis R. Rodriguez * 6203c4805SLuis R. Rodriguez * Permission to use, copy, modify, and/or distribute this software for any 7203c4805SLuis R. Rodriguez * purpose with or without fee is hereby granted, provided that the above 8203c4805SLuis R. Rodriguez * copyright notice and this permission notice appear in all copies. 9203c4805SLuis R. Rodriguez * 10203c4805SLuis R. Rodriguez * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11203c4805SLuis R. Rodriguez * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12203c4805SLuis R. Rodriguez * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13203c4805SLuis R. Rodriguez * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14203c4805SLuis R. Rodriguez * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15203c4805SLuis R. Rodriguez * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16203c4805SLuis R. Rodriguez * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17203c4805SLuis R. Rodriguez */ 18203c4805SLuis R. Rodriguez 19203c4805SLuis R. Rodriguez #include <linux/nl80211.h> 20203c4805SLuis R. Rodriguez #include <linux/platform_device.h> 21203c4805SLuis R. Rodriguez #include <linux/ath9k_platform.h> 22203c4805SLuis R. Rodriguez #include "ath9k.h" 23203c4805SLuis R. Rodriguez 24203c4805SLuis R. Rodriguez /* return bus cachesize in 4B word units */ 25203c4805SLuis R. Rodriguez static void ath_ahb_read_cachesize(struct ath_softc *sc, int *csz) 26203c4805SLuis R. Rodriguez { 27203c4805SLuis R. Rodriguez *csz = L1_CACHE_BYTES >> 2; 28203c4805SLuis R. Rodriguez } 29203c4805SLuis R. Rodriguez 30203c4805SLuis R. Rodriguez static void ath_ahb_cleanup(struct ath_softc *sc) 31203c4805SLuis R. Rodriguez { 32203c4805SLuis R. Rodriguez iounmap(sc->mem); 33203c4805SLuis R. Rodriguez } 34203c4805SLuis R. Rodriguez 35203c4805SLuis R. Rodriguez static bool ath_ahb_eeprom_read(struct ath_hw *ah, u32 off, u16 *data) 36203c4805SLuis R. Rodriguez { 37203c4805SLuis R. Rodriguez struct ath_softc *sc = ah->ah_sc; 38203c4805SLuis R. Rodriguez struct platform_device *pdev = to_platform_device(sc->dev); 39203c4805SLuis R. Rodriguez struct ath9k_platform_data *pdata; 40203c4805SLuis R. Rodriguez 41203c4805SLuis R. Rodriguez pdata = (struct ath9k_platform_data *) pdev->dev.platform_data; 42203c4805SLuis R. Rodriguez if (off >= (ARRAY_SIZE(pdata->eeprom_data))) { 43203c4805SLuis R. Rodriguez DPRINTF(ah->ah_sc, ATH_DBG_FATAL, 44203c4805SLuis R. Rodriguez "%s: flash read failed, offset %08x is out of range\n", 45203c4805SLuis R. Rodriguez __func__, off); 46203c4805SLuis R. Rodriguez return false; 47203c4805SLuis R. Rodriguez } 48203c4805SLuis R. Rodriguez 49203c4805SLuis R. Rodriguez *data = pdata->eeprom_data[off]; 50203c4805SLuis R. Rodriguez return true; 51203c4805SLuis R. Rodriguez } 52203c4805SLuis R. Rodriguez 53203c4805SLuis R. Rodriguez static struct ath_bus_ops ath_ahb_bus_ops = { 54203c4805SLuis R. Rodriguez .read_cachesize = ath_ahb_read_cachesize, 55203c4805SLuis R. Rodriguez .cleanup = ath_ahb_cleanup, 56203c4805SLuis R. Rodriguez 57203c4805SLuis R. Rodriguez .eeprom_read = ath_ahb_eeprom_read, 58203c4805SLuis R. Rodriguez }; 59203c4805SLuis R. Rodriguez 60203c4805SLuis R. Rodriguez static int ath_ahb_probe(struct platform_device *pdev) 61203c4805SLuis R. Rodriguez { 62203c4805SLuis R. Rodriguez void __iomem *mem; 63203c4805SLuis R. Rodriguez struct ath_wiphy *aphy; 64203c4805SLuis R. Rodriguez struct ath_softc *sc; 65203c4805SLuis R. Rodriguez struct ieee80211_hw *hw; 66203c4805SLuis R. Rodriguez struct resource *res; 67203c4805SLuis R. Rodriguez int irq; 68203c4805SLuis R. Rodriguez int ret = 0; 69203c4805SLuis R. Rodriguez struct ath_hw *ah; 70203c4805SLuis R. Rodriguez 71203c4805SLuis R. Rodriguez if (!pdev->dev.platform_data) { 72203c4805SLuis R. Rodriguez dev_err(&pdev->dev, "no platform data specified\n"); 73203c4805SLuis R. Rodriguez ret = -EINVAL; 74203c4805SLuis R. Rodriguez goto err_out; 75203c4805SLuis R. Rodriguez } 76203c4805SLuis R. Rodriguez 77203c4805SLuis R. Rodriguez res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 78203c4805SLuis R. Rodriguez if (res == NULL) { 79203c4805SLuis R. Rodriguez dev_err(&pdev->dev, "no memory resource found\n"); 80203c4805SLuis R. Rodriguez ret = -ENXIO; 81203c4805SLuis R. Rodriguez goto err_out; 82203c4805SLuis R. Rodriguez } 83203c4805SLuis R. Rodriguez 84203c4805SLuis R. Rodriguez mem = ioremap_nocache(res->start, res->end - res->start + 1); 85203c4805SLuis R. Rodriguez if (mem == NULL) { 86203c4805SLuis R. Rodriguez dev_err(&pdev->dev, "ioremap failed\n"); 87203c4805SLuis R. Rodriguez ret = -ENOMEM; 88203c4805SLuis R. Rodriguez goto err_out; 89203c4805SLuis R. Rodriguez } 90203c4805SLuis R. Rodriguez 91203c4805SLuis R. Rodriguez res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 92203c4805SLuis R. Rodriguez if (res == NULL) { 93203c4805SLuis R. Rodriguez dev_err(&pdev->dev, "no IRQ resource found\n"); 94203c4805SLuis R. Rodriguez ret = -ENXIO; 95203c4805SLuis R. Rodriguez goto err_iounmap; 96203c4805SLuis R. Rodriguez } 97203c4805SLuis R. Rodriguez 98203c4805SLuis R. Rodriguez irq = res->start; 99203c4805SLuis R. Rodriguez 100203c4805SLuis R. Rodriguez hw = ieee80211_alloc_hw(sizeof(struct ath_wiphy) + 101203c4805SLuis R. Rodriguez sizeof(struct ath_softc), &ath9k_ops); 102203c4805SLuis R. Rodriguez if (hw == NULL) { 103203c4805SLuis R. Rodriguez dev_err(&pdev->dev, "no memory for ieee80211_hw\n"); 104203c4805SLuis R. Rodriguez ret = -ENOMEM; 105203c4805SLuis R. Rodriguez goto err_iounmap; 106203c4805SLuis R. Rodriguez } 107203c4805SLuis R. Rodriguez 108203c4805SLuis R. Rodriguez SET_IEEE80211_DEV(hw, &pdev->dev); 109203c4805SLuis R. Rodriguez platform_set_drvdata(pdev, hw); 110203c4805SLuis R. Rodriguez 111203c4805SLuis R. Rodriguez aphy = hw->priv; 112203c4805SLuis R. Rodriguez sc = (struct ath_softc *) (aphy + 1); 113203c4805SLuis R. Rodriguez aphy->sc = sc; 114203c4805SLuis R. Rodriguez aphy->hw = hw; 115203c4805SLuis R. Rodriguez sc->pri_wiphy = aphy; 116203c4805SLuis R. Rodriguez sc->hw = hw; 117203c4805SLuis R. Rodriguez sc->dev = &pdev->dev; 118203c4805SLuis R. Rodriguez sc->mem = mem; 119203c4805SLuis R. Rodriguez sc->bus_ops = &ath_ahb_bus_ops; 120203c4805SLuis R. Rodriguez sc->irq = irq; 121203c4805SLuis R. Rodriguez 1221e40bcfaSLuis R. Rodriguez ret = ath_init_device(AR5416_AR9100_DEVID, sc); 123*580171f7SLuis R. Rodriguez if (ret) { 124*580171f7SLuis R. Rodriguez dev_err(&pdev->dev, "failed to initialize device\n"); 125203c4805SLuis R. Rodriguez goto err_free_hw; 126203c4805SLuis R. Rodriguez } 127203c4805SLuis R. Rodriguez 128203c4805SLuis R. Rodriguez ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc); 129203c4805SLuis R. Rodriguez if (ret) { 130*580171f7SLuis R. Rodriguez dev_err(&pdev->dev, "request_irq failed\n"); 131203c4805SLuis R. Rodriguez goto err_detach; 132203c4805SLuis R. Rodriguez } 133203c4805SLuis R. Rodriguez 134203c4805SLuis R. Rodriguez ah = sc->sc_ah; 135203c4805SLuis R. Rodriguez printk(KERN_INFO 136203c4805SLuis R. Rodriguez "%s: Atheros AR%s MAC/BB Rev:%x, " 137203c4805SLuis R. Rodriguez "AR%s RF Rev:%x, mem=0x%lx, irq=%d\n", 138203c4805SLuis R. Rodriguez wiphy_name(hw->wiphy), 139203c4805SLuis R. Rodriguez ath_mac_bb_name(ah->hw_version.macVersion), 140203c4805SLuis R. Rodriguez ah->hw_version.macRev, 141203c4805SLuis R. Rodriguez ath_rf_name((ah->hw_version.analog5GhzRev & AR_RADIO_SREV_MAJOR)), 142203c4805SLuis R. Rodriguez ah->hw_version.phyRev, 143203c4805SLuis R. Rodriguez (unsigned long)mem, irq); 144203c4805SLuis R. Rodriguez 145203c4805SLuis R. Rodriguez return 0; 146203c4805SLuis R. Rodriguez 147203c4805SLuis R. Rodriguez err_detach: 148203c4805SLuis R. Rodriguez ath_detach(sc); 149203c4805SLuis R. Rodriguez err_free_hw: 150203c4805SLuis R. Rodriguez ieee80211_free_hw(hw); 151203c4805SLuis R. Rodriguez platform_set_drvdata(pdev, NULL); 152203c4805SLuis R. Rodriguez err_iounmap: 153203c4805SLuis R. Rodriguez iounmap(mem); 154203c4805SLuis R. Rodriguez err_out: 155203c4805SLuis R. Rodriguez return ret; 156203c4805SLuis R. Rodriguez } 157203c4805SLuis R. Rodriguez 158203c4805SLuis R. Rodriguez static int ath_ahb_remove(struct platform_device *pdev) 159203c4805SLuis R. Rodriguez { 160203c4805SLuis R. Rodriguez struct ieee80211_hw *hw = platform_get_drvdata(pdev); 161203c4805SLuis R. Rodriguez 162203c4805SLuis R. Rodriguez if (hw) { 163203c4805SLuis R. Rodriguez struct ath_wiphy *aphy = hw->priv; 164203c4805SLuis R. Rodriguez struct ath_softc *sc = aphy->sc; 165203c4805SLuis R. Rodriguez 166203c4805SLuis R. Rodriguez ath_cleanup(sc); 167203c4805SLuis R. Rodriguez platform_set_drvdata(pdev, NULL); 168203c4805SLuis R. Rodriguez } 169203c4805SLuis R. Rodriguez 170203c4805SLuis R. Rodriguez return 0; 171203c4805SLuis R. Rodriguez } 172203c4805SLuis R. Rodriguez 173203c4805SLuis R. Rodriguez static struct platform_driver ath_ahb_driver = { 174203c4805SLuis R. Rodriguez .probe = ath_ahb_probe, 175203c4805SLuis R. Rodriguez .remove = ath_ahb_remove, 176203c4805SLuis R. Rodriguez .driver = { 177203c4805SLuis R. Rodriguez .name = "ath9k", 178203c4805SLuis R. Rodriguez .owner = THIS_MODULE, 179203c4805SLuis R. Rodriguez }, 180203c4805SLuis R. Rodriguez }; 181203c4805SLuis R. Rodriguez 182203c4805SLuis R. Rodriguez int ath_ahb_init(void) 183203c4805SLuis R. Rodriguez { 184203c4805SLuis R. Rodriguez return platform_driver_register(&ath_ahb_driver); 185203c4805SLuis R. Rodriguez } 186203c4805SLuis R. Rodriguez 187203c4805SLuis R. Rodriguez void ath_ahb_exit(void) 188203c4805SLuis R. Rodriguez { 189203c4805SLuis R. Rodriguez platform_driver_unregister(&ath_ahb_driver); 190203c4805SLuis R. Rodriguez } 191