package/kernel/mac80211/patches/300-Revert-ath5k-Remove-AHB-bus-support.patch

   1 From: Felix Fietkau <nbd@openwrt.org>
   2 Date: Sat, 27 Sep 2014 15:57:09 +0200
   3 Subject: [PATCH] Revert "ath5k: Remove AHB bus support"
   4
   5 This reverts commit 093ec3c5337434f40d77c1af06c139da3e5ba6dc.
   6 ---
   7  create mode 100644 drivers/net/wireless/ath/ath5k/ahb.c
   8
   9 --- a/drivers/net/wireless/ath/ath5k/Kconfig
  10 +++ b/drivers/net/wireless/ath/ath5k/Kconfig
  11 @@ -1,13 +1,14 @@
  12  config ATH5K
  13         tristate "Atheros 5xxx wireless cards support"
  14         depends on m
  15 -       depends on PCI && MAC80211
  16 +       depends on (PCI || ATHEROS_AR231X) && MAC80211
  17         select ATH_COMMON
  18         select MAC80211_LEDS
  19         select BACKPORT_LEDS_CLASS
  20         select BACKPORT_NEW_LEDS
  21         select BACKPORT_AVERAGE
  22 -       select ATH5K_PCI
  23 +       select ATH5K_AHB if (ATHEROS_AR231X && !PCI)
  24 +       select ATH5K_PCI if (!ATHEROS_AR231X && PCI)
  25         ---help---
  26           This module adds support for wireless adapters based on
  27           Atheros 5xxx chipset.
  28 @@ -52,9 +53,16 @@ config ATH5K_TRACER
  29
  30           If unsure, say N.
  31
  32 +config ATH5K_AHB
  33 +       bool "Atheros 5xxx AHB bus support"
  34 +       depends on (ATHEROS_AR231X && !PCI)
  35 +       ---help---
  36 +         This adds support for WiSoC type chipsets of the 5xxx Atheros
  37 +         family.
  38 +
  39  config ATH5K_PCI
  40         bool "Atheros 5xxx PCI bus support"
  41 -       depends on PCI
  42 +       depends on (!ATHEROS_AR231X && PCI)
  43         ---help---
  44           This adds support for PCI type chipsets of the 5xxx Atheros
  45           family.
  46 --- a/drivers/net/wireless/ath/ath5k/Makefile
  47 +++ b/drivers/net/wireless/ath/ath5k/Makefile
  48 @@ -17,5 +17,6 @@ ath5k-y                               += ani.o
  49  ath5k-y                                += sysfs.o
  50  ath5k-y                                += mac80211-ops.o
  51  ath5k-$(CPTCFG_ATH5K_DEBUG)    += debug.o
  52 +ath5k-$(CPTCFG_ATH5K_AHB)      += ahb.o
  53  ath5k-$(CPTCFG_ATH5K_PCI)      += pci.o
  54  obj-$(CPTCFG_ATH5K)            += ath5k.o
  55 --- /dev/null
  56 +++ b/drivers/net/wireless/ath/ath5k/ahb.c
  57 @@ -0,0 +1,234 @@
  58 +/*
  59 + * Copyright (c) 2008-2009 Atheros Communications Inc.
  60 + * Copyright (c) 2009 Gabor Juhos <juhosg@openwrt.org>
  61 + * Copyright (c) 2009 Imre Kaloz <kaloz@openwrt.org>
  62 + *
  63 + * Permission to use, copy, modify, and/or distribute this software for any
  64 + * purpose with or without fee is hereby granted, provided that the above
  65 + * copyright notice and this permission notice appear in all copies.
  66 + *
  67 + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  68 + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  69 + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  70 + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  71 + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  72 + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  73 + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  74 + */
  75 +
  76 +#include <linux/nl80211.h>
  77 +#include <linux/platform_device.h>
  78 +#include <linux/etherdevice.h>
  79 +#include <linux/export.h>
  80 +#include <ar231x_platform.h>
  81 +#include "ath5k.h"
  82 +#include "debug.h"
  83 +#include "base.h"
  84 +#include "reg.h"
  85 +
  86 +/* return bus cachesize in 4B word units */
  87 +static void ath5k_ahb_read_cachesize(struct ath_common *common, int *csz)
  88 +{
  89 +       *csz = L1_CACHE_BYTES >> 2;
  90 +}
  91 +
  92 +static bool
  93 +ath5k_ahb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
  94 +{
  95 +       struct ath5k_hw *ah = common->priv;
  96 +       struct platform_device *pdev = to_platform_device(ah->dev);
  97 +       struct ar231x_board_config *bcfg = dev_get_platdata(&pdev->dev);
  98 +       u16 *eeprom, *eeprom_end;
  99 +
 100 +       eeprom = (u16 *) bcfg->radio;
 101 +       eeprom_end = ((void *) bcfg->config) + BOARD_CONFIG_BUFSZ;
 102 +
 103 +       eeprom += off;
 104 +       if (eeprom > eeprom_end)
 105 +               return false;
 106 +
 107 +       *data = *eeprom;
 108 +       return true;
 109 +}
 110 +
 111 +int ath5k_hw_read_srev(struct ath5k_hw *ah)
 112 +{
 113 +       struct platform_device *pdev = to_platform_device(ah->dev);
 114 +       struct ar231x_board_config *bcfg = dev_get_platdata(&pdev->dev);
 115 +       ah->ah_mac_srev = bcfg->devid;
 116 +       return 0;
 117 +}
 118 +
 119 +static int ath5k_ahb_eeprom_read_mac(struct ath5k_hw *ah, u8 *mac)
 120 +{
 121 +       struct platform_device *pdev = to_platform_device(ah->dev);
 122 +       struct ar231x_board_config *bcfg = dev_get_platdata(&pdev->dev);
 123 +       u8 *cfg_mac;
 124 +
 125 +       if (to_platform_device(ah->dev)->id == 0)
 126 +               cfg_mac = bcfg->config->wlan0_mac;
 127 +       else
 128 +               cfg_mac = bcfg->config->wlan1_mac;
 129 +
 130 +       memcpy(mac, cfg_mac, ETH_ALEN);
 131 +       return 0;
 132 +}
 133 +
 134 +static const struct ath_bus_ops ath_ahb_bus_ops = {
 135 +       .ath_bus_type = ATH_AHB,
 136 +       .read_cachesize = ath5k_ahb_read_cachesize,
 137 +       .eeprom_read = ath5k_ahb_eeprom_read,
 138 +       .eeprom_read_mac = ath5k_ahb_eeprom_read_mac,
 139 +};
 140 +
 141 +/*Initialization*/
 142 +static int ath_ahb_probe(struct platform_device *pdev)
 143 +{
 144 +       struct ar231x_board_config *bcfg = dev_get_platdata(&pdev->dev);
 145 +       struct ath5k_hw *ah;
 146 +       struct ieee80211_hw *hw;
 147 +       struct resource *res;
 148 +       void __iomem *mem;
 149 +       int irq;
 150 +       int ret = 0;
 151 +       u32 reg;
 152 +
 153 +       if (!dev_get_platdata(&pdev->dev)) {
 154 +               dev_err(&pdev->dev, "no platform data specified\n");
 155 +               ret = -EINVAL;
 156 +               goto err_out;
 157 +       }
 158 +
 159 +       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 160 +       if (res == NULL) {
 161 +               dev_err(&pdev->dev, "no memory resource found\n");
 162 +               ret = -ENXIO;
 163 +               goto err_out;
 164 +       }
 165 +
 166 +       mem = ioremap_nocache(res->start, resource_size(res));
 167 +       if (mem == NULL) {
 168 +               dev_err(&pdev->dev, "ioremap failed\n");
 169 +               ret = -ENOMEM;
 170 +               goto err_out;
 171 +       }
 172 +
 173 +       res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 174 +       if (res == NULL) {
 175 +               dev_err(&pdev->dev, "no IRQ resource found\n");
 176 +               ret = -ENXIO;
 177 +               goto err_iounmap;
 178 +       }
 179 +
 180 +       irq = res->start;
 181 +
 182 +       hw = ieee80211_alloc_hw(sizeof(struct ath5k_hw), &ath5k_hw_ops);
 183 +       if (hw == NULL) {
 184 +               dev_err(&pdev->dev, "no memory for ieee80211_hw\n");
 185 +               ret = -ENOMEM;
 186 +               goto err_iounmap;
 187 +       }
 188 +
 189 +       ah = hw->priv;
 190 +       ah->hw = hw;
 191 +       ah->dev = &pdev->dev;
 192 +       ah->iobase = mem;
 193 +       ah->irq = irq;
 194 +       ah->devid = bcfg->devid;
 195 +
 196 +       if (bcfg->devid >= AR5K_SREV_AR2315_R6) {
 197 +               /* Enable WMAC AHB arbitration */
 198 +               reg = ioread32((void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
 199 +               reg |= AR5K_AR2315_AHB_ARB_CTL_WLAN;
 200 +               iowrite32(reg, (void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
 201 +
 202 +               /* Enable global WMAC swapping */
 203 +               reg = ioread32((void __iomem *) AR5K_AR2315_BYTESWAP);
 204 +               reg |= AR5K_AR2315_BYTESWAP_WMAC;
 205 +               iowrite32(reg, (void __iomem *) AR5K_AR2315_BYTESWAP);
 206 +       } else {
 207 +               /* Enable WMAC DMA access (assuming 5312 or 231x*/
 208 +               /* TODO: check other platforms */
 209 +               reg = ioread32((void __iomem *) AR5K_AR5312_ENABLE);
 210 +               if (to_platform_device(ah->dev)->id == 0)
 211 +                       reg |= AR5K_AR5312_ENABLE_WLAN0;
 212 +               else
 213 +                       reg |= AR5K_AR5312_ENABLE_WLAN1;
 214 +               iowrite32(reg, (void __iomem *) AR5K_AR5312_ENABLE);
 215 +
 216 +               /*
 217 +                * On a dual-band AR5312, the multiband radio is only
 218 +                * used as pass-through. Disable 2 GHz support in the
 219 +                * driver for it
 220 +                */
 221 +               if (to_platform_device(ah->dev)->id == 0 &&
 222 +                   (bcfg->config->flags & (BD_WLAN0 | BD_WLAN1)) ==
 223 +                    (BD_WLAN1 | BD_WLAN0))
 224 +                       ah->ah_capabilities.cap_needs_2GHz_ovr = true;
 225 +               else
 226 +                       ah->ah_capabilities.cap_needs_2GHz_ovr = false;
 227 +       }
 228 +
 229 +       ret = ath5k_init_ah(ah, &ath_ahb_bus_ops);
 230 +       if (ret != 0) {
 231 +               dev_err(&pdev->dev, "failed to attach device, err=%d\n", ret);
 232 +               ret = -ENODEV;
 233 +               goto err_free_hw;
 234 +       }
 235 +
 236 +       platform_set_drvdata(pdev, hw);
 237 +
 238 +       return 0;
 239 +
 240 + err_free_hw:
 241 +       ieee80211_free_hw(hw);
 242 + err_iounmap:
 243 +        iounmap(mem);
 244 + err_out:
 245 +       return ret;
 246 +}
 247 +
 248 +static int ath_ahb_remove(struct platform_device *pdev)
 249 +{
 250 +       struct ar231x_board_config *bcfg = dev_get_platdata(&pdev->dev);
 251 +       struct ieee80211_hw *hw = platform_get_drvdata(pdev);
 252 +       struct ath5k_hw *ah;
 253 +       u32 reg;
 254 +
 255 +       if (!hw)
 256 +               return 0;
 257 +
 258 +       ah = hw->priv;
 259 +
 260 +       if (bcfg->devid >= AR5K_SREV_AR2315_R6) {
 261 +               /* Disable WMAC AHB arbitration */
 262 +               reg = ioread32((void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
 263 +               reg &= ~AR5K_AR2315_AHB_ARB_CTL_WLAN;
 264 +               iowrite32(reg, (void __iomem *) AR5K_AR2315_AHB_ARB_CTL);
 265 +       } else {
 266 +               /*Stop DMA access */
 267 +               reg = ioread32((void __iomem *) AR5K_AR5312_ENABLE);
 268 +               if (to_platform_device(ah->dev)->id == 0)
 269 +                       reg &= ~AR5K_AR5312_ENABLE_WLAN0;
 270 +               else
 271 +                       reg &= ~AR5K_AR5312_ENABLE_WLAN1;
 272 +               iowrite32(reg, (void __iomem *) AR5K_AR5312_ENABLE);
 273 +       }
 274 +
 275 +       ath5k_deinit_ah(ah);
 276 +       iounmap(ah->iobase);
 277 +       ieee80211_free_hw(hw);
 278 +
 279 +       return 0;
 280 +}
 281 +
 282 +static struct platform_driver ath_ahb_driver = {
 283 +       .probe      = ath_ahb_probe,
 284 +       .remove     = ath_ahb_remove,
 285 +       .driver         = {
 286 +               .name   = "ar231x-wmac",
 287 +               .owner  = THIS_MODULE,
 288 +       },
 289 +};
 290 +
 291 +module_platform_driver(ath_ahb_driver);
 292 --- a/drivers/net/wireless/ath/ath5k/ath5k.h
 293 +++ b/drivers/net/wireless/ath/ath5k/ath5k.h
 294 @@ -1647,6 +1647,32 @@ static inline struct ath_regulatory *ath
 295         return &(ath5k_hw_common(ah)->regulatory);
 296  }
 297
 298 +#ifdef CONFIG_ATHEROS_AR231X
 299 +#define AR5K_AR2315_PCI_BASE   ((void __iomem *)0xb0100000)
 300 +
 301 +static inline void __iomem *ath5k_ahb_reg(struct ath5k_hw *ah, u16 reg)
 302 +{
 303 +       /* On AR2315 and AR2317 the PCI clock domain registers
 304 +        * are outside of the WMAC register space */
 305 +       if (unlikely((reg >= 0x4000) && (reg < 0x5000) &&
 306 +           (ah->ah_mac_srev >= AR5K_SREV_AR2315_R6)))
 307 +               return AR5K_AR2315_PCI_BASE + reg;
 308 +
 309 +       return ah->iobase + reg;
 310 +}
 311 +
 312 +static inline u32 ath5k_hw_reg_read(struct ath5k_hw *ah, u16 reg)
 313 +{
 314 +       return ioread32(ath5k_ahb_reg(ah, reg));
 315 +}
 316 +
 317 +static inline void ath5k_hw_reg_write(struct ath5k_hw *ah, u32 val, u16 reg)
 318 +{
 319 +       iowrite32(val, ath5k_ahb_reg(ah, reg));
 320 +}
 321 +
 322 +#else
 323 +
 324  static inline u32 ath5k_hw_reg_read(struct ath5k_hw *ah, u16 reg)
 325  {
 326         return ioread32(ah->iobase + reg);
 327 @@ -1657,6 +1683,8 @@ static inline void ath5k_hw_reg_write(st
 328         iowrite32(val, ah->iobase + reg);
 329  }
 330
 331 +#endif
 332 +
 333  static inline enum ath_bus_type ath5k_get_bus_type(struct ath5k_hw *ah)
 334  {
 335         return ath5k_hw_common(ah)->bus_ops->ath_bus_type;
 336 --- a/drivers/net/wireless/ath/ath5k/base.c
 337 +++ b/drivers/net/wireless/ath/ath5k/base.c
 338 @@ -99,6 +99,15 @@ static int ath5k_reset(struct ath5k_hw *
 339
 340  /* Known SREVs */
 341  static const struct ath5k_srev_name srev_names[] = {
 342 +#ifdef CONFIG_ATHEROS_AR231X
 343 +       { "5312",       AR5K_VERSION_MAC,       AR5K_SREV_AR5312_R2 },
 344 +       { "5312",       AR5K_VERSION_MAC,       AR5K_SREV_AR5312_R7 },
 345 +       { "2313",       AR5K_VERSION_MAC,       AR5K_SREV_AR2313_R8 },
 346 +       { "2315",       AR5K_VERSION_MAC,       AR5K_SREV_AR2315_R6 },
 347 +       { "2315",       AR5K_VERSION_MAC,       AR5K_SREV_AR2315_R7 },
 348 +       { "2317",       AR5K_VERSION_MAC,       AR5K_SREV_AR2317_R1 },
 349 +       { "2317",       AR5K_VERSION_MAC,       AR5K_SREV_AR2317_R2 },
 350 +#else
 351         { "5210",       AR5K_VERSION_MAC,       AR5K_SREV_AR5210 },
 352         { "5311",       AR5K_VERSION_MAC,       AR5K_SREV_AR5311 },
 353         { "5311A",      AR5K_VERSION_MAC,       AR5K_SREV_AR5311A },
 354 @@ -117,6 +126,7 @@ static const struct ath5k_srev_name srev
 355         { "5418",       AR5K_VERSION_MAC,       AR5K_SREV_AR5418 },
 356         { "2425",       AR5K_VERSION_MAC,       AR5K_SREV_AR2425 },
 357         { "2417",       AR5K_VERSION_MAC,       AR5K_SREV_AR2417 },
 358 +#endif
 359         { "xxxxx",      AR5K_VERSION_MAC,       AR5K_SREV_UNKNOWN },
 360         { "5110",       AR5K_VERSION_RAD,       AR5K_SREV_RAD_5110 },
 361         { "5111",       AR5K_VERSION_RAD,       AR5K_SREV_RAD_5111 },
 362 @@ -132,6 +142,10 @@ static const struct ath5k_srev_name srev
 363         { "5413",       AR5K_VERSION_RAD,       AR5K_SREV_RAD_5413 },
 364         { "5424",       AR5K_VERSION_RAD,       AR5K_SREV_RAD_5424 },
 365         { "5133",       AR5K_VERSION_RAD,       AR5K_SREV_RAD_5133 },
 366 +#ifdef CONFIG_ATHEROS_AR231X
 367 +       { "2316",       AR5K_VERSION_RAD,       AR5K_SREV_RAD_2316 },
 368 +       { "2317",       AR5K_VERSION_RAD,       AR5K_SREV_RAD_2317 },
 369 +#endif
 370         { "xxxxx",      AR5K_VERSION_RAD,       AR5K_SREV_UNKNOWN },
 371  };
 372
 373 --- a/drivers/net/wireless/ath/ath5k/led.c
 374 +++ b/drivers/net/wireless/ath/ath5k/led.c
 375 @@ -163,14 +163,20 @@ int ath5k_init_leds(struct ath5k_hw *ah)
 376  {
 377         int ret = 0;
 378         struct ieee80211_hw *hw = ah->hw;
 379 +#ifndef CONFIG_ATHEROS_AR231X
 380         struct pci_dev *pdev = ah->pdev;
 381 +#endif
 382         char name[ATH5K_LED_MAX_NAME_LEN + 1];
 383         const struct pci_device_id *match;
 384
 385         if (!ah->pdev)
 386                 return 0;
 387
 388 +#ifdef CONFIG_ATHEROS_AR231X
 389 +       match = NULL;
 390 +#else
 391         match = pci_match_id(&ath5k_led_devices[0], pdev);
 392 +#endif
 393         if (match) {
 394                 __set_bit(ATH_STAT_LEDSOFT, ah->status);
 395                 ah->led_pin = ATH_PIN(match->driver_data);