Daniel Drake | 66bb42f | 2007-11-19 16:20:12 +0000 | [diff] [blame] | 1 | /* ZD1211 USB-WLAN driver for Linux |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 2 | * |
Daniel Drake | 66bb42f | 2007-11-19 16:20:12 +0000 | [diff] [blame] | 3 | * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de> |
| 4 | * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org> |
| 5 | * Copyright (C) 2006-2007 Michael Wu <flamingice@sourmilk.net> |
Luis R. Rodriguez | e83a107 | 2008-09-09 23:19:49 -0700 | [diff] [blame] | 6 | * Copyright (C) 2007-2008 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu> |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 7 | * |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | */ |
| 22 | |
| 23 | #include <linux/netdevice.h> |
| 24 | #include <linux/etherdevice.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 25 | #include <linux/slab.h> |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 26 | #include <linux/usb.h> |
| 27 | #include <linux/jiffies.h> |
| 28 | #include <net/ieee80211_radiotap.h> |
| 29 | |
| 30 | #include "zd_def.h" |
| 31 | #include "zd_chip.h" |
| 32 | #include "zd_mac.h" |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 33 | #include "zd_rf.h" |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 34 | |
Luis R. Rodriguez | e83a107 | 2008-09-09 23:19:49 -0700 | [diff] [blame] | 35 | struct zd_reg_alpha2_map { |
| 36 | u32 reg; |
| 37 | char alpha2[2]; |
| 38 | }; |
| 39 | |
| 40 | static struct zd_reg_alpha2_map reg_alpha2_map[] = { |
| 41 | { ZD_REGDOMAIN_FCC, "US" }, |
| 42 | { ZD_REGDOMAIN_IC, "CA" }, |
| 43 | { ZD_REGDOMAIN_ETSI, "DE" }, /* Generic ETSI, use most restrictive */ |
| 44 | { ZD_REGDOMAIN_JAPAN, "JP" }, |
John W. Linville | 3d3b33b | 2010-06-16 14:41:36 -0400 | [diff] [blame] | 45 | { ZD_REGDOMAIN_JAPAN_2, "JP" }, |
| 46 | { ZD_REGDOMAIN_JAPAN_3, "JP" }, |
Luis R. Rodriguez | e83a107 | 2008-09-09 23:19:49 -0700 | [diff] [blame] | 47 | { ZD_REGDOMAIN_SPAIN, "ES" }, |
| 48 | { ZD_REGDOMAIN_FRANCE, "FR" }, |
| 49 | }; |
| 50 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 51 | /* This table contains the hardware specific values for the modulation rates. */ |
| 52 | static const struct ieee80211_rate zd_rates[] = { |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 53 | { .bitrate = 10, |
| 54 | .hw_value = ZD_CCK_RATE_1M, }, |
| 55 | { .bitrate = 20, |
| 56 | .hw_value = ZD_CCK_RATE_2M, |
| 57 | .hw_value_short = ZD_CCK_RATE_2M | ZD_CCK_PREA_SHORT, |
| 58 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| 59 | { .bitrate = 55, |
| 60 | .hw_value = ZD_CCK_RATE_5_5M, |
| 61 | .hw_value_short = ZD_CCK_RATE_5_5M | ZD_CCK_PREA_SHORT, |
| 62 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| 63 | { .bitrate = 110, |
| 64 | .hw_value = ZD_CCK_RATE_11M, |
| 65 | .hw_value_short = ZD_CCK_RATE_11M | ZD_CCK_PREA_SHORT, |
| 66 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| 67 | { .bitrate = 60, |
| 68 | .hw_value = ZD_OFDM_RATE_6M, |
| 69 | .flags = 0 }, |
| 70 | { .bitrate = 90, |
| 71 | .hw_value = ZD_OFDM_RATE_9M, |
| 72 | .flags = 0 }, |
| 73 | { .bitrate = 120, |
| 74 | .hw_value = ZD_OFDM_RATE_12M, |
| 75 | .flags = 0 }, |
| 76 | { .bitrate = 180, |
| 77 | .hw_value = ZD_OFDM_RATE_18M, |
| 78 | .flags = 0 }, |
| 79 | { .bitrate = 240, |
| 80 | .hw_value = ZD_OFDM_RATE_24M, |
| 81 | .flags = 0 }, |
| 82 | { .bitrate = 360, |
| 83 | .hw_value = ZD_OFDM_RATE_36M, |
| 84 | .flags = 0 }, |
| 85 | { .bitrate = 480, |
| 86 | .hw_value = ZD_OFDM_RATE_48M, |
| 87 | .flags = 0 }, |
| 88 | { .bitrate = 540, |
| 89 | .hw_value = ZD_OFDM_RATE_54M, |
| 90 | .flags = 0 }, |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 91 | }; |
| 92 | |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 93 | /* |
| 94 | * Zydas retry rates table. Each line is listed in the same order as |
| 95 | * in zd_rates[] and contains all the rate used when a packet is sent |
| 96 | * starting with a given rates. Let's consider an example : |
| 97 | * |
| 98 | * "11 Mbits : 4, 3, 2, 1, 0" means : |
| 99 | * - packet is sent using 4 different rates |
| 100 | * - 1st rate is index 3 (ie 11 Mbits) |
| 101 | * - 2nd rate is index 2 (ie 5.5 Mbits) |
| 102 | * - 3rd rate is index 1 (ie 2 Mbits) |
| 103 | * - 4th rate is index 0 (ie 1 Mbits) |
| 104 | */ |
| 105 | |
| 106 | static const struct tx_retry_rate zd_retry_rates[] = { |
| 107 | { /* 1 Mbits */ 1, { 0 }}, |
| 108 | { /* 2 Mbits */ 2, { 1, 0 }}, |
| 109 | { /* 5.5 Mbits */ 3, { 2, 1, 0 }}, |
| 110 | { /* 11 Mbits */ 4, { 3, 2, 1, 0 }}, |
| 111 | { /* 6 Mbits */ 5, { 4, 3, 2, 1, 0 }}, |
| 112 | { /* 9 Mbits */ 6, { 5, 4, 3, 2, 1, 0}}, |
| 113 | { /* 12 Mbits */ 5, { 6, 3, 2, 1, 0 }}, |
| 114 | { /* 18 Mbits */ 6, { 7, 6, 3, 2, 1, 0 }}, |
| 115 | { /* 24 Mbits */ 6, { 8, 6, 3, 2, 1, 0 }}, |
| 116 | { /* 36 Mbits */ 7, { 9, 8, 6, 3, 2, 1, 0 }}, |
| 117 | { /* 48 Mbits */ 8, {10, 9, 8, 6, 3, 2, 1, 0 }}, |
| 118 | { /* 54 Mbits */ 9, {11, 10, 9, 8, 6, 3, 2, 1, 0 }} |
| 119 | }; |
| 120 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 121 | static const struct ieee80211_channel zd_channels[] = { |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 122 | { .center_freq = 2412, .hw_value = 1 }, |
| 123 | { .center_freq = 2417, .hw_value = 2 }, |
| 124 | { .center_freq = 2422, .hw_value = 3 }, |
| 125 | { .center_freq = 2427, .hw_value = 4 }, |
| 126 | { .center_freq = 2432, .hw_value = 5 }, |
| 127 | { .center_freq = 2437, .hw_value = 6 }, |
| 128 | { .center_freq = 2442, .hw_value = 7 }, |
| 129 | { .center_freq = 2447, .hw_value = 8 }, |
| 130 | { .center_freq = 2452, .hw_value = 9 }, |
| 131 | { .center_freq = 2457, .hw_value = 10 }, |
| 132 | { .center_freq = 2462, .hw_value = 11 }, |
| 133 | { .center_freq = 2467, .hw_value = 12 }, |
| 134 | { .center_freq = 2472, .hw_value = 13 }, |
| 135 | { .center_freq = 2484, .hw_value = 14 }, |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 136 | }; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 137 | |
Ulrich Kunitz | 583afd1 | 2006-09-13 02:42:38 +0100 | [diff] [blame] | 138 | static void housekeeping_init(struct zd_mac *mac); |
| 139 | static void housekeeping_enable(struct zd_mac *mac); |
| 140 | static void housekeeping_disable(struct zd_mac *mac); |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 141 | static void beacon_init(struct zd_mac *mac); |
| 142 | static void beacon_enable(struct zd_mac *mac); |
| 143 | static void beacon_disable(struct zd_mac *mac); |
Jussi Kivilinna | 212e1a5 | 2011-01-31 20:49:43 +0200 | [diff] [blame] | 144 | static void set_rts_cts(struct zd_mac *mac, unsigned int short_preamble); |
| 145 | static int zd_mac_config_beacon(struct ieee80211_hw *hw, |
Jussi Kivilinna | dde4673 | 2011-06-20 14:42:49 +0300 | [diff] [blame] | 146 | struct sk_buff *beacon, bool in_intr); |
Ulrich Kunitz | 583afd1 | 2006-09-13 02:42:38 +0100 | [diff] [blame] | 147 | |
Luis R. Rodriguez | e83a107 | 2008-09-09 23:19:49 -0700 | [diff] [blame] | 148 | static int zd_reg2alpha2(u8 regdomain, char *alpha2) |
| 149 | { |
| 150 | unsigned int i; |
| 151 | struct zd_reg_alpha2_map *reg_map; |
| 152 | for (i = 0; i < ARRAY_SIZE(reg_alpha2_map); i++) { |
| 153 | reg_map = ®_alpha2_map[i]; |
| 154 | if (regdomain == reg_map->reg) { |
| 155 | alpha2[0] = reg_map->alpha2[0]; |
| 156 | alpha2[1] = reg_map->alpha2[1]; |
| 157 | return 0; |
| 158 | } |
| 159 | } |
| 160 | return 1; |
| 161 | } |
| 162 | |
Jussi Kivilinna | 7a1d656 | 2011-06-20 14:42:28 +0300 | [diff] [blame] | 163 | static int zd_check_signal(struct ieee80211_hw *hw, int signal) |
| 164 | { |
| 165 | struct zd_mac *mac = zd_hw_mac(hw); |
| 166 | |
| 167 | dev_dbg_f_cond(zd_mac_dev(mac), signal < 0 || signal > 100, |
| 168 | "%s: signal value from device not in range 0..100, " |
| 169 | "but %d.\n", __func__, signal); |
| 170 | |
| 171 | if (signal < 0) |
| 172 | signal = 0; |
| 173 | else if (signal > 100) |
| 174 | signal = 100; |
| 175 | |
| 176 | return signal; |
| 177 | } |
| 178 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 179 | int zd_mac_preinit_hw(struct ieee80211_hw *hw) |
Daniel Drake | 74553ae | 2007-07-01 18:22:32 +0100 | [diff] [blame] | 180 | { |
| 181 | int r; |
| 182 | u8 addr[ETH_ALEN]; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 183 | struct zd_mac *mac = zd_hw_mac(hw); |
Daniel Drake | 74553ae | 2007-07-01 18:22:32 +0100 | [diff] [blame] | 184 | |
| 185 | r = zd_chip_read_mac_addr_fw(&mac->chip, addr); |
| 186 | if (r) |
| 187 | return r; |
| 188 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 189 | SET_IEEE80211_PERM_ADDR(hw, addr); |
| 190 | |
Daniel Drake | 74553ae | 2007-07-01 18:22:32 +0100 | [diff] [blame] | 191 | return 0; |
| 192 | } |
| 193 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 194 | int zd_mac_init_hw(struct ieee80211_hw *hw) |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 195 | { |
| 196 | int r; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 197 | struct zd_mac *mac = zd_hw_mac(hw); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 198 | struct zd_chip *chip = &mac->chip; |
Luis R. Rodriguez | e83a107 | 2008-09-09 23:19:49 -0700 | [diff] [blame] | 199 | char alpha2[2]; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 200 | u8 default_regdomain; |
| 201 | |
| 202 | r = zd_chip_enable_int(chip); |
| 203 | if (r) |
| 204 | goto out; |
Daniel Drake | 74553ae | 2007-07-01 18:22:32 +0100 | [diff] [blame] | 205 | r = zd_chip_init_hw(chip); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 206 | if (r) |
| 207 | goto disable_int; |
| 208 | |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 209 | ZD_ASSERT(!irqs_disabled()); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 210 | |
| 211 | r = zd_read_regdomain(chip, &default_regdomain); |
| 212 | if (r) |
| 213 | goto disable_int; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 214 | spin_lock_irq(&mac->lock); |
| 215 | mac->regdomain = mac->default_regdomain = default_regdomain; |
| 216 | spin_unlock_irq(&mac->lock); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 217 | |
Daniel Drake | 40da08b | 2006-08-01 23:43:32 +0200 | [diff] [blame] | 218 | /* We must inform the device that we are doing encryption/decryption in |
| 219 | * software at the moment. */ |
| 220 | r = zd_set_encryption_type(chip, ENC_SNIFFER); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 221 | if (r) |
| 222 | goto disable_int; |
| 223 | |
Luis R. Rodriguez | e83a107 | 2008-09-09 23:19:49 -0700 | [diff] [blame] | 224 | r = zd_reg2alpha2(mac->regdomain, alpha2); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 225 | if (r) |
| 226 | goto disable_int; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 227 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 228 | r = regulatory_hint(hw->wiphy, alpha2); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 229 | disable_int: |
| 230 | zd_chip_disable_int(chip); |
| 231 | out: |
| 232 | return r; |
| 233 | } |
| 234 | |
| 235 | void zd_mac_clear(struct zd_mac *mac) |
| 236 | { |
Ulrich Kunitz | 9cdac96 | 2006-12-01 00:58:07 +0000 | [diff] [blame] | 237 | flush_workqueue(zd_workqueue); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 238 | zd_chip_clear(&mac->chip); |
Ulrich Kunitz | c48cf12 | 2006-08-12 18:00:17 +0100 | [diff] [blame] | 239 | ZD_ASSERT(!spin_is_locked(&mac->lock)); |
| 240 | ZD_MEMCLEAR(mac, sizeof(struct zd_mac)); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 241 | } |
| 242 | |
Ulrich Kunitz | c569123 | 2007-07-21 22:42:13 +0100 | [diff] [blame] | 243 | static int set_rx_filter(struct zd_mac *mac) |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 244 | { |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 245 | unsigned long flags; |
| 246 | u32 filter = STA_RX_FILTER; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 247 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 248 | spin_lock_irqsave(&mac->lock, flags); |
| 249 | if (mac->pass_ctrl) |
| 250 | filter |= RX_FILTER_CTRL; |
| 251 | spin_unlock_irqrestore(&mac->lock, flags); |
| 252 | |
| 253 | return zd_iowrite32(&mac->chip, CR_RX_FILTER, filter); |
Ulrich Kunitz | c569123 | 2007-07-21 22:42:13 +0100 | [diff] [blame] | 254 | } |
| 255 | |
Jussi Kivilinna | c2fadcb | 2011-01-31 20:48:06 +0200 | [diff] [blame] | 256 | static int set_mac_and_bssid(struct zd_mac *mac) |
| 257 | { |
| 258 | int r; |
| 259 | |
| 260 | if (!mac->vif) |
| 261 | return -1; |
| 262 | |
| 263 | r = zd_write_mac_addr(&mac->chip, mac->vif->addr); |
| 264 | if (r) |
| 265 | return r; |
| 266 | |
| 267 | /* Vendor driver after setting MAC either sets BSSID for AP or |
| 268 | * filter for other modes. |
| 269 | */ |
| 270 | if (mac->type != NL80211_IFTYPE_AP) |
| 271 | return set_rx_filter(mac); |
| 272 | else |
| 273 | return zd_write_bssid(&mac->chip, mac->vif->addr); |
| 274 | } |
| 275 | |
Ulrich Kunitz | c569123 | 2007-07-21 22:42:13 +0100 | [diff] [blame] | 276 | static int set_mc_hash(struct zd_mac *mac) |
| 277 | { |
| 278 | struct zd_mc_hash hash; |
Ulrich Kunitz | c569123 | 2007-07-21 22:42:13 +0100 | [diff] [blame] | 279 | zd_mc_clear(&hash); |
Ulrich Kunitz | c569123 | 2007-07-21 22:42:13 +0100 | [diff] [blame] | 280 | return zd_chip_set_multicast_hash(&mac->chip, &hash); |
| 281 | } |
| 282 | |
Jussi Kivilinna | a0fd751 | 2011-01-31 20:49:52 +0200 | [diff] [blame] | 283 | int zd_op_start(struct ieee80211_hw *hw) |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 284 | { |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 285 | struct zd_mac *mac = zd_hw_mac(hw); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 286 | struct zd_chip *chip = &mac->chip; |
Daniel Drake | 74553ae | 2007-07-01 18:22:32 +0100 | [diff] [blame] | 287 | struct zd_usb *usb = &chip->usb; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 288 | int r; |
| 289 | |
Daniel Drake | 74553ae | 2007-07-01 18:22:32 +0100 | [diff] [blame] | 290 | if (!usb->initialized) { |
| 291 | r = zd_usb_init_hw(usb); |
| 292 | if (r) |
| 293 | goto out; |
| 294 | } |
| 295 | |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 296 | r = zd_chip_enable_int(chip); |
| 297 | if (r < 0) |
| 298 | goto out; |
| 299 | |
| 300 | r = zd_chip_set_basic_rates(chip, CR_RATES_80211B | CR_RATES_80211G); |
| 301 | if (r < 0) |
| 302 | goto disable_int; |
Ulrich Kunitz | c569123 | 2007-07-21 22:42:13 +0100 | [diff] [blame] | 303 | r = set_rx_filter(mac); |
| 304 | if (r) |
| 305 | goto disable_int; |
Ulrich Kunitz | c569123 | 2007-07-21 22:42:13 +0100 | [diff] [blame] | 306 | r = set_mc_hash(mac); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 307 | if (r) |
| 308 | goto disable_int; |
| 309 | r = zd_chip_switch_radio_on(chip); |
| 310 | if (r < 0) |
| 311 | goto disable_int; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 312 | r = zd_chip_enable_rxtx(chip); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 313 | if (r < 0) |
| 314 | goto disable_radio; |
| 315 | r = zd_chip_enable_hwint(chip); |
| 316 | if (r < 0) |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 317 | goto disable_rxtx; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 318 | |
Ulrich Kunitz | 583afd1 | 2006-09-13 02:42:38 +0100 | [diff] [blame] | 319 | housekeeping_enable(mac); |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 320 | beacon_enable(mac); |
| 321 | set_bit(ZD_DEVICE_RUNNING, &mac->flags); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 322 | return 0; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 323 | disable_rxtx: |
| 324 | zd_chip_disable_rxtx(chip); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 325 | disable_radio: |
| 326 | zd_chip_switch_radio_off(chip); |
| 327 | disable_int: |
| 328 | zd_chip_disable_int(chip); |
| 329 | out: |
| 330 | return r; |
| 331 | } |
| 332 | |
Jussi Kivilinna | a0fd751 | 2011-01-31 20:49:52 +0200 | [diff] [blame] | 333 | void zd_op_stop(struct ieee80211_hw *hw) |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 334 | { |
| 335 | struct zd_mac *mac = zd_hw_mac(hw); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 336 | struct zd_chip *chip = &mac->chip; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 337 | struct sk_buff *skb; |
| 338 | struct sk_buff_head *ack_wait_queue = &mac->ack_wait_queue; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 339 | |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 340 | clear_bit(ZD_DEVICE_RUNNING, &mac->flags); |
| 341 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 342 | /* The order here deliberately is a little different from the open() |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 343 | * method, since we need to make sure there is no opportunity for RX |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 344 | * frames to be processed by mac80211 after we have stopped it. |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 345 | */ |
| 346 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 347 | zd_chip_disable_rxtx(chip); |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 348 | beacon_disable(mac); |
Ulrich Kunitz | 583afd1 | 2006-09-13 02:42:38 +0100 | [diff] [blame] | 349 | housekeeping_disable(mac); |
Daniel Drake | b1382ed | 2006-11-22 00:06:48 +0000 | [diff] [blame] | 350 | flush_workqueue(zd_workqueue); |
Daniel Drake | b1382ed | 2006-11-22 00:06:48 +0000 | [diff] [blame] | 351 | |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 352 | zd_chip_disable_hwint(chip); |
| 353 | zd_chip_switch_radio_off(chip); |
| 354 | zd_chip_disable_int(chip); |
| 355 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 356 | |
| 357 | while ((skb = skb_dequeue(ack_wait_queue))) |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 358 | dev_kfree_skb_any(skb); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 359 | } |
| 360 | |
Jussi Kivilinna | 212e1a5 | 2011-01-31 20:49:43 +0200 | [diff] [blame] | 361 | int zd_restore_settings(struct zd_mac *mac) |
| 362 | { |
| 363 | struct sk_buff *beacon; |
| 364 | struct zd_mc_hash multicast_hash; |
| 365 | unsigned int short_preamble; |
| 366 | int r, beacon_interval, beacon_period; |
| 367 | u8 channel; |
| 368 | |
| 369 | dev_dbg_f(zd_mac_dev(mac), "\n"); |
| 370 | |
| 371 | spin_lock_irq(&mac->lock); |
| 372 | multicast_hash = mac->multicast_hash; |
| 373 | short_preamble = mac->short_preamble; |
| 374 | beacon_interval = mac->beacon.interval; |
| 375 | beacon_period = mac->beacon.period; |
| 376 | channel = mac->channel; |
| 377 | spin_unlock_irq(&mac->lock); |
| 378 | |
| 379 | r = set_mac_and_bssid(mac); |
| 380 | if (r < 0) { |
| 381 | dev_dbg_f(zd_mac_dev(mac), "set_mac_and_bssid failed, %d\n", r); |
| 382 | return r; |
| 383 | } |
| 384 | |
| 385 | r = zd_chip_set_channel(&mac->chip, channel); |
| 386 | if (r < 0) { |
| 387 | dev_dbg_f(zd_mac_dev(mac), "zd_chip_set_channel failed, %d\n", |
| 388 | r); |
| 389 | return r; |
| 390 | } |
| 391 | |
| 392 | set_rts_cts(mac, short_preamble); |
| 393 | |
| 394 | r = zd_chip_set_multicast_hash(&mac->chip, &multicast_hash); |
| 395 | if (r < 0) { |
| 396 | dev_dbg_f(zd_mac_dev(mac), |
| 397 | "zd_chip_set_multicast_hash failed, %d\n", r); |
| 398 | return r; |
| 399 | } |
| 400 | |
| 401 | if (mac->type == NL80211_IFTYPE_MESH_POINT || |
| 402 | mac->type == NL80211_IFTYPE_ADHOC || |
| 403 | mac->type == NL80211_IFTYPE_AP) { |
| 404 | if (mac->vif != NULL) { |
| 405 | beacon = ieee80211_beacon_get(mac->hw, mac->vif); |
Jussi Kivilinna | f762d8c | 2011-06-20 14:42:39 +0300 | [diff] [blame] | 406 | if (beacon) |
Jussi Kivilinna | dde4673 | 2011-06-20 14:42:49 +0300 | [diff] [blame] | 407 | zd_mac_config_beacon(mac->hw, beacon, false); |
Jussi Kivilinna | 212e1a5 | 2011-01-31 20:49:43 +0200 | [diff] [blame] | 408 | } |
| 409 | |
| 410 | zd_set_beacon_interval(&mac->chip, beacon_interval, |
| 411 | beacon_period, mac->type); |
| 412 | |
| 413 | spin_lock_irq(&mac->lock); |
| 414 | mac->beacon.last_update = jiffies; |
| 415 | spin_unlock_irq(&mac->lock); |
| 416 | } |
| 417 | |
| 418 | return 0; |
| 419 | } |
| 420 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 421 | /** |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 422 | * zd_mac_tx_status - reports tx status of a packet if required |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 423 | * @hw - a &struct ieee80211_hw pointer |
| 424 | * @skb - a sk-buffer |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 425 | * @flags: extra flags to set in the TX status info |
| 426 | * @ackssi: ACK signal strength |
Coly Li | 73ac36e | 2009-01-07 18:09:16 -0800 | [diff] [blame] | 427 | * @success - True for successful transmission of the frame |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 428 | * |
| 429 | * This information calls ieee80211_tx_status_irqsafe() if required by the |
| 430 | * control information. It copies the control information into the status |
| 431 | * information. |
| 432 | * |
| 433 | * If no status information has been requested, the skb is freed. |
| 434 | */ |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 435 | static void zd_mac_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, |
| 436 | int ackssi, struct tx_status *tx_status) |
Ulrich Kunitz | 9cdac96 | 2006-12-01 00:58:07 +0000 | [diff] [blame] | 437 | { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 438 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 439 | int i; |
| 440 | int success = 1, retry = 1; |
| 441 | int first_idx; |
| 442 | const struct tx_retry_rate *retries; |
Ulrich Kunitz | 9cdac96 | 2006-12-01 00:58:07 +0000 | [diff] [blame] | 443 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 444 | ieee80211_tx_info_clear_status(info); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 445 | |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 446 | if (tx_status) { |
| 447 | success = !tx_status->failure; |
| 448 | retry = tx_status->retry + success; |
| 449 | } |
| 450 | |
| 451 | if (success) { |
| 452 | /* success */ |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 453 | info->flags |= IEEE80211_TX_STAT_ACK; |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 454 | } else { |
| 455 | /* failure */ |
| 456 | info->flags &= ~IEEE80211_TX_STAT_ACK; |
| 457 | } |
| 458 | |
| 459 | first_idx = info->status.rates[0].idx; |
| 460 | ZD_ASSERT(0<=first_idx && first_idx<ARRAY_SIZE(zd_retry_rates)); |
| 461 | retries = &zd_retry_rates[first_idx]; |
Dan Carpenter | 86baf71 | 2010-02-27 09:12:34 +0300 | [diff] [blame] | 462 | ZD_ASSERT(1 <= retry && retry <= retries->count); |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 463 | |
| 464 | info->status.rates[0].idx = retries->rate[0]; |
| 465 | info->status.rates[0].count = 1; // (retry > 1 ? 2 : 1); |
| 466 | |
| 467 | for (i=1; i<IEEE80211_TX_MAX_RATES-1 && i<retry; i++) { |
| 468 | info->status.rates[i].idx = retries->rate[i]; |
| 469 | info->status.rates[i].count = 1; // ((i==retry-1) && success ? 1:2); |
| 470 | } |
| 471 | for (; i<IEEE80211_TX_MAX_RATES && i<retry; i++) { |
Dan Carpenter | 86baf71 | 2010-02-27 09:12:34 +0300 | [diff] [blame] | 472 | info->status.rates[i].idx = retries->rate[retry - 1]; |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 473 | info->status.rates[i].count = 1; // (success ? 1:2); |
| 474 | } |
| 475 | if (i<IEEE80211_TX_MAX_RATES) |
| 476 | info->status.rates[i].idx = -1; /* terminate */ |
| 477 | |
Jussi Kivilinna | 7a1d656 | 2011-06-20 14:42:28 +0300 | [diff] [blame] | 478 | info->status.ack_signal = zd_check_signal(hw, ackssi); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 479 | ieee80211_tx_status_irqsafe(hw, skb); |
Ulrich Kunitz | 9cdac96 | 2006-12-01 00:58:07 +0000 | [diff] [blame] | 480 | } |
| 481 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 482 | /** |
| 483 | * zd_mac_tx_failed - callback for failed frames |
| 484 | * @dev: the mac80211 wireless device |
| 485 | * |
Adam Buchbinder | 303863f | 2009-12-11 16:35:37 -0500 | [diff] [blame] | 486 | * This function is called if a frame couldn't be successfully |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 487 | * transferred. The first frame from the tx queue, will be selected and |
| 488 | * reported as error to the upper layers. |
| 489 | */ |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 490 | void zd_mac_tx_failed(struct urb *urb) |
Ulrich Kunitz | 9cdac96 | 2006-12-01 00:58:07 +0000 | [diff] [blame] | 491 | { |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 492 | struct ieee80211_hw * hw = zd_usb_to_hw(urb->context); |
| 493 | struct zd_mac *mac = zd_hw_mac(hw); |
| 494 | struct sk_buff_head *q = &mac->ack_wait_queue; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 495 | struct sk_buff *skb; |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 496 | struct tx_status *tx_status = (struct tx_status *)urb->transfer_buffer; |
| 497 | unsigned long flags; |
| 498 | int success = !tx_status->failure; |
| 499 | int retry = tx_status->retry + success; |
| 500 | int found = 0; |
| 501 | int i, position = 0; |
Ulrich Kunitz | 9cdac96 | 2006-12-01 00:58:07 +0000 | [diff] [blame] | 502 | |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 503 | q = &mac->ack_wait_queue; |
| 504 | spin_lock_irqsave(&q->lock, flags); |
Johannes Berg | 5078ed5 | 2008-02-20 12:09:25 +0100 | [diff] [blame] | 505 | |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 506 | skb_queue_walk(q, skb) { |
| 507 | struct ieee80211_hdr *tx_hdr; |
| 508 | struct ieee80211_tx_info *info; |
| 509 | int first_idx, final_idx; |
| 510 | const struct tx_retry_rate *retries; |
| 511 | u8 final_rate; |
| 512 | |
| 513 | position ++; |
| 514 | |
| 515 | /* if the hardware reports a failure and we had a 802.11 ACK |
| 516 | * pending, then we skip the first skb when searching for a |
| 517 | * matching frame */ |
| 518 | if (tx_status->failure && mac->ack_pending && |
| 519 | skb_queue_is_first(q, skb)) { |
| 520 | continue; |
| 521 | } |
| 522 | |
| 523 | tx_hdr = (struct ieee80211_hdr *)skb->data; |
| 524 | |
| 525 | /* we skip all frames not matching the reported destination */ |
| 526 | if (unlikely(memcmp(tx_hdr->addr1, tx_status->mac, ETH_ALEN))) { |
| 527 | continue; |
| 528 | } |
| 529 | |
| 530 | /* we skip all frames not matching the reported final rate */ |
| 531 | |
| 532 | info = IEEE80211_SKB_CB(skb); |
| 533 | first_idx = info->status.rates[0].idx; |
| 534 | ZD_ASSERT(0<=first_idx && first_idx<ARRAY_SIZE(zd_retry_rates)); |
| 535 | retries = &zd_retry_rates[first_idx]; |
Dan Carpenter | 86baf71 | 2010-02-27 09:12:34 +0300 | [diff] [blame] | 536 | if (retry <= 0 || retry > retries->count) |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 537 | continue; |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 538 | |
Dan Carpenter | 86baf71 | 2010-02-27 09:12:34 +0300 | [diff] [blame] | 539 | final_idx = retries->rate[retry - 1]; |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 540 | final_rate = zd_rates[final_idx].hw_value; |
| 541 | |
| 542 | if (final_rate != tx_status->rate) { |
| 543 | continue; |
| 544 | } |
| 545 | |
| 546 | found = 1; |
| 547 | break; |
| 548 | } |
| 549 | |
| 550 | if (found) { |
| 551 | for (i=1; i<=position; i++) { |
| 552 | skb = __skb_dequeue(q); |
| 553 | zd_mac_tx_status(hw, skb, |
| 554 | mac->ack_pending ? mac->ack_signal : 0, |
| 555 | i == position ? tx_status : NULL); |
| 556 | mac->ack_pending = 0; |
| 557 | } |
| 558 | } |
| 559 | |
| 560 | spin_unlock_irqrestore(&q->lock, flags); |
Ulrich Kunitz | 9cdac96 | 2006-12-01 00:58:07 +0000 | [diff] [blame] | 561 | } |
| 562 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 563 | /** |
| 564 | * zd_mac_tx_to_dev - callback for USB layer |
| 565 | * @skb: a &sk_buff pointer |
| 566 | * @error: error value, 0 if transmission successful |
| 567 | * |
| 568 | * Informs the MAC layer that the frame has successfully transferred to the |
| 569 | * device. If an ACK is required and the transfer to the device has been |
| 570 | * successful, the packets are put on the @ack_wait_queue with |
| 571 | * the control set removed. |
| 572 | */ |
| 573 | void zd_mac_tx_to_dev(struct sk_buff *skb, int error) |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 574 | { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 575 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 576 | struct ieee80211_hw *hw = info->rate_driver_data[0]; |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 577 | struct zd_mac *mac = zd_hw_mac(hw); |
| 578 | |
| 579 | ieee80211_tx_info_clear_status(info); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 580 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 581 | skb_pull(skb, sizeof(struct zd_ctrlset)); |
| 582 | if (unlikely(error || |
| 583 | (info->flags & IEEE80211_TX_CTL_NO_ACK))) { |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 584 | /* |
| 585 | * FIXME : do we need to fill in anything ? |
| 586 | */ |
| 587 | ieee80211_tx_status_irqsafe(hw, skb); |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 588 | } else { |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 589 | struct sk_buff_head *q = &mac->ack_wait_queue; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 590 | |
| 591 | skb_queue_tail(q, skb); |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 592 | while (skb_queue_len(q) > ZD_MAC_MAX_ACK_WAITERS) { |
| 593 | zd_mac_tx_status(hw, skb_dequeue(q), |
| 594 | mac->ack_pending ? mac->ack_signal : 0, |
| 595 | NULL); |
| 596 | mac->ack_pending = 0; |
| 597 | } |
Daniel Drake | b1382ed | 2006-11-22 00:06:48 +0000 | [diff] [blame] | 598 | } |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 599 | } |
| 600 | |
Daniel Drake | b1cd8416 | 2006-11-22 00:06:38 +0000 | [diff] [blame] | 601 | static int zd_calc_tx_length_us(u8 *service, u8 zd_rate, u16 tx_length) |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 602 | { |
Ulrich Kunitz | 64f222c | 2007-08-06 01:24:31 +0100 | [diff] [blame] | 603 | /* ZD_PURE_RATE() must be used to remove the modulation type flag of |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 604 | * the zd-rate values. |
| 605 | */ |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 606 | static const u8 rate_divisor[] = { |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 607 | [ZD_PURE_RATE(ZD_CCK_RATE_1M)] = 1, |
| 608 | [ZD_PURE_RATE(ZD_CCK_RATE_2M)] = 2, |
| 609 | /* Bits must be doubled. */ |
| 610 | [ZD_PURE_RATE(ZD_CCK_RATE_5_5M)] = 11, |
| 611 | [ZD_PURE_RATE(ZD_CCK_RATE_11M)] = 11, |
| 612 | [ZD_PURE_RATE(ZD_OFDM_RATE_6M)] = 6, |
| 613 | [ZD_PURE_RATE(ZD_OFDM_RATE_9M)] = 9, |
| 614 | [ZD_PURE_RATE(ZD_OFDM_RATE_12M)] = 12, |
| 615 | [ZD_PURE_RATE(ZD_OFDM_RATE_18M)] = 18, |
| 616 | [ZD_PURE_RATE(ZD_OFDM_RATE_24M)] = 24, |
| 617 | [ZD_PURE_RATE(ZD_OFDM_RATE_36M)] = 36, |
| 618 | [ZD_PURE_RATE(ZD_OFDM_RATE_48M)] = 48, |
| 619 | [ZD_PURE_RATE(ZD_OFDM_RATE_54M)] = 54, |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 620 | }; |
| 621 | |
| 622 | u32 bits = (u32)tx_length * 8; |
| 623 | u32 divisor; |
| 624 | |
Ulrich Kunitz | 64f222c | 2007-08-06 01:24:31 +0100 | [diff] [blame] | 625 | divisor = rate_divisor[ZD_PURE_RATE(zd_rate)]; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 626 | if (divisor == 0) |
| 627 | return -EINVAL; |
| 628 | |
Daniel Drake | b1cd8416 | 2006-11-22 00:06:38 +0000 | [diff] [blame] | 629 | switch (zd_rate) { |
| 630 | case ZD_CCK_RATE_5_5M: |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 631 | bits = (2*bits) + 10; /* round up to the next integer */ |
| 632 | break; |
Daniel Drake | b1cd8416 | 2006-11-22 00:06:38 +0000 | [diff] [blame] | 633 | case ZD_CCK_RATE_11M: |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 634 | if (service) { |
| 635 | u32 t = bits % 11; |
| 636 | *service &= ~ZD_PLCP_SERVICE_LENGTH_EXTENSION; |
| 637 | if (0 < t && t <= 3) { |
| 638 | *service |= ZD_PLCP_SERVICE_LENGTH_EXTENSION; |
| 639 | } |
| 640 | } |
| 641 | bits += 10; /* round up to the next integer */ |
| 642 | break; |
| 643 | } |
| 644 | |
| 645 | return bits/divisor; |
| 646 | } |
| 647 | |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 648 | static void cs_set_control(struct zd_mac *mac, struct zd_ctrlset *cs, |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 649 | struct ieee80211_hdr *header, |
| 650 | struct ieee80211_tx_info *info) |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 651 | { |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 652 | /* |
Daniel Drake | b1382ed | 2006-11-22 00:06:48 +0000 | [diff] [blame] | 653 | * CONTROL TODO: |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 654 | * - if backoff needed, enable bit 0 |
| 655 | * - if burst (backoff not needed) disable bit 0 |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 656 | */ |
| 657 | |
| 658 | cs->control = 0; |
| 659 | |
| 660 | /* First fragment */ |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 661 | if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 662 | cs->control |= ZD_CS_NEED_RANDOM_BACKOFF; |
| 663 | |
Gábor Stefanik | 13bdcd9 | 2009-05-14 17:34:59 +0000 | [diff] [blame] | 664 | /* No ACK expected (multicast, etc.) */ |
| 665 | if (info->flags & IEEE80211_TX_CTL_NO_ACK) |
| 666 | cs->control |= ZD_CS_NO_ACK; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 667 | |
| 668 | /* PS-POLL */ |
Harvey Harrison | 8536582 | 2008-06-14 23:33:39 -0700 | [diff] [blame] | 669 | if (ieee80211_is_pspoll(header->frame_control)) |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 670 | cs->control |= ZD_CS_PS_POLL_FRAME; |
| 671 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 672 | if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) |
Daniel Drake | b1382ed | 2006-11-22 00:06:48 +0000 | [diff] [blame] | 673 | cs->control |= ZD_CS_RTS; |
| 674 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 675 | if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) |
Daniel Drake | b1382ed | 2006-11-22 00:06:48 +0000 | [diff] [blame] | 676 | cs->control |= ZD_CS_SELF_CTS; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 677 | |
| 678 | /* FIXME: Management frame? */ |
| 679 | } |
| 680 | |
Jussi Kivilinna | f762d8c | 2011-06-20 14:42:39 +0300 | [diff] [blame] | 681 | static bool zd_mac_match_cur_beacon(struct zd_mac *mac, struct sk_buff *beacon) |
| 682 | { |
| 683 | if (!mac->beacon.cur_beacon) |
| 684 | return false; |
| 685 | |
| 686 | if (mac->beacon.cur_beacon->len != beacon->len) |
| 687 | return false; |
| 688 | |
| 689 | return !memcmp(beacon->data, mac->beacon.cur_beacon->data, beacon->len); |
| 690 | } |
| 691 | |
| 692 | static void zd_mac_free_cur_beacon_locked(struct zd_mac *mac) |
| 693 | { |
| 694 | ZD_ASSERT(mutex_is_locked(&mac->chip.mutex)); |
| 695 | |
| 696 | kfree_skb(mac->beacon.cur_beacon); |
| 697 | mac->beacon.cur_beacon = NULL; |
| 698 | } |
| 699 | |
| 700 | static void zd_mac_free_cur_beacon(struct zd_mac *mac) |
| 701 | { |
| 702 | mutex_lock(&mac->chip.mutex); |
| 703 | zd_mac_free_cur_beacon_locked(mac); |
| 704 | mutex_unlock(&mac->chip.mutex); |
| 705 | } |
| 706 | |
Jussi Kivilinna | dde4673 | 2011-06-20 14:42:49 +0300 | [diff] [blame] | 707 | static int zd_mac_config_beacon(struct ieee80211_hw *hw, struct sk_buff *beacon, |
| 708 | bool in_intr) |
Luis Carlos Cobo | 72e77a8 | 2008-03-03 12:32:15 -0800 | [diff] [blame] | 709 | { |
| 710 | struct zd_mac *mac = zd_hw_mac(hw); |
Jussi Kivilinna | 5127229 | 2011-01-31 20:49:05 +0200 | [diff] [blame] | 711 | int r, ret, num_cmds, req_pos = 0; |
Luis Carlos Cobo | 72e77a8 | 2008-03-03 12:32:15 -0800 | [diff] [blame] | 712 | u32 tmp, j = 0; |
| 713 | /* 4 more bytes for tail CRC */ |
| 714 | u32 full_len = beacon->len + 4; |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 715 | unsigned long end_jiffies, message_jiffies; |
Jussi Kivilinna | 5127229 | 2011-01-31 20:49:05 +0200 | [diff] [blame] | 716 | struct zd_ioreq32 *ioreqs; |
| 717 | |
Jussi Kivilinna | f762d8c | 2011-06-20 14:42:39 +0300 | [diff] [blame] | 718 | mutex_lock(&mac->chip.mutex); |
| 719 | |
| 720 | /* Check if hw already has this beacon. */ |
| 721 | if (zd_mac_match_cur_beacon(mac, beacon)) { |
| 722 | r = 0; |
| 723 | goto out_nofree; |
| 724 | } |
| 725 | |
Jussi Kivilinna | 5127229 | 2011-01-31 20:49:05 +0200 | [diff] [blame] | 726 | /* Alloc memory for full beacon write at once. */ |
| 727 | num_cmds = 1 + zd_chip_is_zd1211b(&mac->chip) + full_len; |
| 728 | ioreqs = kmalloc(num_cmds * sizeof(struct zd_ioreq32), GFP_KERNEL); |
Jussi Kivilinna | f762d8c | 2011-06-20 14:42:39 +0300 | [diff] [blame] | 729 | if (!ioreqs) { |
| 730 | r = -ENOMEM; |
| 731 | goto out_nofree; |
| 732 | } |
Daniel Drake | f2cae6c | 2008-07-04 04:30:49 +0100 | [diff] [blame] | 733 | |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 734 | r = zd_iowrite32_locked(&mac->chip, 0, CR_BCN_FIFO_SEMAPHORE); |
| 735 | if (r < 0) |
| 736 | goto out; |
| 737 | r = zd_ioread32_locked(&mac->chip, &tmp, CR_BCN_FIFO_SEMAPHORE); |
| 738 | if (r < 0) |
| 739 | goto release_sema; |
Jussi Kivilinna | dde4673 | 2011-06-20 14:42:49 +0300 | [diff] [blame] | 740 | if (in_intr && tmp & 0x2) { |
| 741 | r = -EBUSY; |
| 742 | goto release_sema; |
| 743 | } |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 744 | |
| 745 | end_jiffies = jiffies + HZ / 2; /*~500ms*/ |
| 746 | message_jiffies = jiffies + HZ / 10; /*~100ms*/ |
Luis Carlos Cobo | 72e77a8 | 2008-03-03 12:32:15 -0800 | [diff] [blame] | 747 | while (tmp & 0x2) { |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 748 | r = zd_ioread32_locked(&mac->chip, &tmp, CR_BCN_FIFO_SEMAPHORE); |
Daniel Drake | f2cae6c | 2008-07-04 04:30:49 +0100 | [diff] [blame] | 749 | if (r < 0) |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 750 | goto release_sema; |
| 751 | if (time_is_before_eq_jiffies(message_jiffies)) { |
| 752 | message_jiffies = jiffies + HZ / 10; |
| 753 | dev_err(zd_mac_dev(mac), |
| 754 | "CR_BCN_FIFO_SEMAPHORE not ready\n"); |
| 755 | if (time_is_before_eq_jiffies(end_jiffies)) { |
| 756 | dev_err(zd_mac_dev(mac), |
| 757 | "Giving up beacon config.\n"); |
| 758 | r = -ETIMEDOUT; |
Jussi Kivilinna | 3985a46 | 2011-01-31 20:50:02 +0200 | [diff] [blame] | 759 | goto reset_device; |
Luis Carlos Cobo | 72e77a8 | 2008-03-03 12:32:15 -0800 | [diff] [blame] | 760 | } |
| 761 | } |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 762 | msleep(20); |
Luis Carlos Cobo | 72e77a8 | 2008-03-03 12:32:15 -0800 | [diff] [blame] | 763 | } |
| 764 | |
Jussi Kivilinna | 5127229 | 2011-01-31 20:49:05 +0200 | [diff] [blame] | 765 | ioreqs[req_pos].addr = CR_BCN_FIFO; |
| 766 | ioreqs[req_pos].value = full_len - 1; |
| 767 | req_pos++; |
Daniel Drake | f2cae6c | 2008-07-04 04:30:49 +0100 | [diff] [blame] | 768 | if (zd_chip_is_zd1211b(&mac->chip)) { |
Jussi Kivilinna | 5127229 | 2011-01-31 20:49:05 +0200 | [diff] [blame] | 769 | ioreqs[req_pos].addr = CR_BCN_LENGTH; |
| 770 | ioreqs[req_pos].value = full_len - 1; |
| 771 | req_pos++; |
Daniel Drake | f2cae6c | 2008-07-04 04:30:49 +0100 | [diff] [blame] | 772 | } |
Luis Carlos Cobo | 72e77a8 | 2008-03-03 12:32:15 -0800 | [diff] [blame] | 773 | |
Daniel Drake | f2cae6c | 2008-07-04 04:30:49 +0100 | [diff] [blame] | 774 | for (j = 0 ; j < beacon->len; j++) { |
Jussi Kivilinna | 5127229 | 2011-01-31 20:49:05 +0200 | [diff] [blame] | 775 | ioreqs[req_pos].addr = CR_BCN_FIFO; |
| 776 | ioreqs[req_pos].value = *((u8 *)(beacon->data + j)); |
| 777 | req_pos++; |
Daniel Drake | f2cae6c | 2008-07-04 04:30:49 +0100 | [diff] [blame] | 778 | } |
Luis Carlos Cobo | 72e77a8 | 2008-03-03 12:32:15 -0800 | [diff] [blame] | 779 | |
Daniel Drake | f2cae6c | 2008-07-04 04:30:49 +0100 | [diff] [blame] | 780 | for (j = 0; j < 4; j++) { |
Jussi Kivilinna | 5127229 | 2011-01-31 20:49:05 +0200 | [diff] [blame] | 781 | ioreqs[req_pos].addr = CR_BCN_FIFO; |
| 782 | ioreqs[req_pos].value = 0x0; |
| 783 | req_pos++; |
Daniel Drake | f2cae6c | 2008-07-04 04:30:49 +0100 | [diff] [blame] | 784 | } |
Luis Carlos Cobo | 72e77a8 | 2008-03-03 12:32:15 -0800 | [diff] [blame] | 785 | |
Jussi Kivilinna | 5127229 | 2011-01-31 20:49:05 +0200 | [diff] [blame] | 786 | BUG_ON(req_pos != num_cmds); |
| 787 | |
| 788 | r = zd_iowrite32a_locked(&mac->chip, ioreqs, num_cmds); |
| 789 | |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 790 | release_sema: |
| 791 | /* |
| 792 | * Try very hard to release device beacon semaphore, as otherwise |
| 793 | * device/driver can be left in unusable state. |
| 794 | */ |
| 795 | end_jiffies = jiffies + HZ / 2; /*~500ms*/ |
| 796 | ret = zd_iowrite32_locked(&mac->chip, 1, CR_BCN_FIFO_SEMAPHORE); |
| 797 | while (ret < 0) { |
Jussi Kivilinna | dde4673 | 2011-06-20 14:42:49 +0300 | [diff] [blame] | 798 | if (in_intr || time_is_before_eq_jiffies(end_jiffies)) { |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 799 | ret = -ETIMEDOUT; |
| 800 | break; |
| 801 | } |
| 802 | |
| 803 | msleep(20); |
| 804 | ret = zd_iowrite32_locked(&mac->chip, 1, CR_BCN_FIFO_SEMAPHORE); |
| 805 | } |
| 806 | |
| 807 | if (ret < 0) |
| 808 | dev_err(zd_mac_dev(mac), "Could not release " |
| 809 | "CR_BCN_FIFO_SEMAPHORE!\n"); |
| 810 | if (r < 0 || ret < 0) { |
| 811 | if (r >= 0) |
| 812 | r = ret; |
Jussi Kivilinna | f762d8c | 2011-06-20 14:42:39 +0300 | [diff] [blame] | 813 | |
| 814 | /* We don't know if beacon was written successfully or not, |
| 815 | * so clear current. */ |
| 816 | zd_mac_free_cur_beacon_locked(mac); |
| 817 | |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 818 | goto out; |
| 819 | } |
Daniel Drake | f2cae6c | 2008-07-04 04:30:49 +0100 | [diff] [blame] | 820 | |
Jussi Kivilinna | f762d8c | 2011-06-20 14:42:39 +0300 | [diff] [blame] | 821 | /* Beacon has now been written successfully, update current. */ |
| 822 | zd_mac_free_cur_beacon_locked(mac); |
| 823 | mac->beacon.cur_beacon = beacon; |
| 824 | beacon = NULL; |
| 825 | |
Luis Carlos Cobo | 72e77a8 | 2008-03-03 12:32:15 -0800 | [diff] [blame] | 826 | /* 802.11b/g 2.4G CCK 1Mb |
| 827 | * 802.11a, not yet implemented, uses different values (see GPL vendor |
| 828 | * driver) |
| 829 | */ |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 830 | r = zd_iowrite32_locked(&mac->chip, 0x00000400 | (full_len << 19), |
| 831 | CR_BCN_PLCP_CFG); |
| 832 | out: |
Jussi Kivilinna | 5127229 | 2011-01-31 20:49:05 +0200 | [diff] [blame] | 833 | kfree(ioreqs); |
Jussi Kivilinna | f762d8c | 2011-06-20 14:42:39 +0300 | [diff] [blame] | 834 | out_nofree: |
| 835 | kfree_skb(beacon); |
| 836 | mutex_unlock(&mac->chip.mutex); |
| 837 | |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 838 | return r; |
Jussi Kivilinna | 3985a46 | 2011-01-31 20:50:02 +0200 | [diff] [blame] | 839 | |
| 840 | reset_device: |
Jussi Kivilinna | f762d8c | 2011-06-20 14:42:39 +0300 | [diff] [blame] | 841 | zd_mac_free_cur_beacon_locked(mac); |
| 842 | kfree_skb(beacon); |
| 843 | |
Jussi Kivilinna | 3985a46 | 2011-01-31 20:50:02 +0200 | [diff] [blame] | 844 | mutex_unlock(&mac->chip.mutex); |
| 845 | kfree(ioreqs); |
| 846 | |
| 847 | /* semaphore stuck, reset device to avoid fw freeze later */ |
| 848 | dev_warn(zd_mac_dev(mac), "CR_BCN_FIFO_SEMAPHORE stuck, " |
| 849 | "reseting device..."); |
| 850 | usb_queue_reset_device(mac->chip.usb.intf); |
| 851 | |
| 852 | return r; |
Luis Carlos Cobo | 72e77a8 | 2008-03-03 12:32:15 -0800 | [diff] [blame] | 853 | } |
| 854 | |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 855 | static int fill_ctrlset(struct zd_mac *mac, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 856 | struct sk_buff *skb) |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 857 | { |
| 858 | int r; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 859 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
| 860 | unsigned int frag_len = skb->len + FCS_LEN; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 861 | unsigned int packet_length; |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 862 | struct ieee80211_rate *txrate; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 863 | struct zd_ctrlset *cs = (struct zd_ctrlset *) |
| 864 | skb_push(skb, sizeof(struct zd_ctrlset)); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 865 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 866 | |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 867 | ZD_ASSERT(frag_len <= 0xffff); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 868 | |
Tomas Vanek | e81a7bd | 2012-02-05 15:51:53 +0200 | [diff] [blame] | 869 | /* |
| 870 | * Firmware computes the duration itself (for all frames except PSPoll) |
| 871 | * and needs the field set to 0 at input, otherwise firmware messes up |
| 872 | * duration_id and sets bits 14 and 15 on. |
| 873 | */ |
| 874 | if (!ieee80211_is_pspoll(hdr->frame_control)) |
| 875 | hdr->duration_id = 0; |
| 876 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 877 | txrate = ieee80211_get_tx_rate(mac->hw, info); |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 878 | |
| 879 | cs->modulation = txrate->hw_value; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 880 | if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 881 | cs->modulation = txrate->hw_value_short; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 882 | |
| 883 | cs->tx_length = cpu_to_le16(frag_len); |
| 884 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 885 | cs_set_control(mac, cs, hdr, info); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 886 | |
| 887 | packet_length = frag_len + sizeof(struct zd_ctrlset) + 10; |
| 888 | ZD_ASSERT(packet_length <= 0xffff); |
| 889 | /* ZD1211B: Computing the length difference this way, gives us |
| 890 | * flexibility to compute the packet length. |
| 891 | */ |
Daniel Drake | 74553ae | 2007-07-01 18:22:32 +0100 | [diff] [blame] | 892 | cs->packet_length = cpu_to_le16(zd_chip_is_zd1211b(&mac->chip) ? |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 893 | packet_length - frag_len : packet_length); |
| 894 | |
| 895 | /* |
| 896 | * CURRENT LENGTH: |
| 897 | * - transmit frame length in microseconds |
| 898 | * - seems to be derived from frame length |
| 899 | * - see Cal_Us_Service() in zdinlinef.h |
| 900 | * - if macp->bTxBurstEnable is enabled, then multiply by 4 |
| 901 | * - bTxBurstEnable is never set in the vendor driver |
| 902 | * |
| 903 | * SERVICE: |
| 904 | * - "for PLCP configuration" |
| 905 | * - always 0 except in some situations at 802.11b 11M |
| 906 | * - see line 53 of zdinlinef.h |
| 907 | */ |
| 908 | cs->service = 0; |
Ulrich Kunitz | 64f222c | 2007-08-06 01:24:31 +0100 | [diff] [blame] | 909 | r = zd_calc_tx_length_us(&cs->service, ZD_RATE(cs->modulation), |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 910 | le16_to_cpu(cs->tx_length)); |
| 911 | if (r < 0) |
| 912 | return r; |
| 913 | cs->current_length = cpu_to_le16(r); |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 914 | cs->next_frame_length = 0; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 915 | |
| 916 | return 0; |
| 917 | } |
| 918 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 919 | /** |
| 920 | * zd_op_tx - transmits a network frame to the device |
Ulrich Kunitz | 741fec5 | 2006-11-22 00:05:53 +0000 | [diff] [blame] | 921 | * |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 922 | * @dev: mac80211 hardware device |
| 923 | * @skb: socket buffer |
| 924 | * @control: the control structure |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 925 | * |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 926 | * This function transmit an IEEE 802.11 network frame to the device. The |
| 927 | * control block of the skbuff will be initialized. If necessary the incoming |
| 928 | * mac80211 queues will be stopped. |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 929 | */ |
Johannes Berg | 7bb4568 | 2011-02-24 14:42:06 +0100 | [diff] [blame] | 930 | static void zd_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb) |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 931 | { |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 932 | struct zd_mac *mac = zd_hw_mac(hw); |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 933 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 934 | int r; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 935 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 936 | r = fill_ctrlset(mac, skb); |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 937 | if (r) |
Jouni Malinen | 640c65e | 2009-03-16 21:47:33 +0200 | [diff] [blame] | 938 | goto fail; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 939 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 940 | info->rate_driver_data[0] = hw; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 941 | |
| 942 | r = zd_usb_tx(&mac->chip.usb, skb); |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 943 | if (r) |
Jouni Malinen | 640c65e | 2009-03-16 21:47:33 +0200 | [diff] [blame] | 944 | goto fail; |
Johannes Berg | 7bb4568 | 2011-02-24 14:42:06 +0100 | [diff] [blame] | 945 | return; |
Jouni Malinen | 640c65e | 2009-03-16 21:47:33 +0200 | [diff] [blame] | 946 | |
| 947 | fail: |
| 948 | dev_kfree_skb(skb); |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 949 | } |
| 950 | |
| 951 | /** |
| 952 | * filter_ack - filters incoming packets for acknowledgements |
| 953 | * @dev: the mac80211 device |
| 954 | * @rx_hdr: received header |
| 955 | * @stats: the status for the received packet |
| 956 | * |
| 957 | * This functions looks for ACK packets and tries to match them with the |
| 958 | * frames in the tx queue. If a match is found the frame will be dequeued and |
| 959 | * the upper layers is informed about the successful transmission. If |
| 960 | * mac80211 queues have been stopped and the number of frames still to be |
| 961 | * transmitted is low the queues will be opened again. |
| 962 | * |
| 963 | * Returns 1 if the frame was an ACK, 0 if it was ignored. |
| 964 | */ |
| 965 | static int filter_ack(struct ieee80211_hw *hw, struct ieee80211_hdr *rx_hdr, |
| 966 | struct ieee80211_rx_status *stats) |
| 967 | { |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 968 | struct zd_mac *mac = zd_hw_mac(hw); |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 969 | struct sk_buff *skb; |
| 970 | struct sk_buff_head *q; |
| 971 | unsigned long flags; |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 972 | int found = 0; |
| 973 | int i, position = 0; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 974 | |
Harvey Harrison | 8536582 | 2008-06-14 23:33:39 -0700 | [diff] [blame] | 975 | if (!ieee80211_is_ack(rx_hdr->frame_control)) |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 976 | return 0; |
| 977 | |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 978 | q = &mac->ack_wait_queue; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 979 | spin_lock_irqsave(&q->lock, flags); |
David S. Miller | 47a227d | 2008-09-23 00:23:30 -0700 | [diff] [blame] | 980 | skb_queue_walk(q, skb) { |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 981 | struct ieee80211_hdr *tx_hdr; |
| 982 | |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 983 | position ++; |
| 984 | |
| 985 | if (mac->ack_pending && skb_queue_is_first(q, skb)) |
| 986 | continue; |
| 987 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 988 | tx_hdr = (struct ieee80211_hdr *)skb->data; |
Shaddy Baddah | cde6901 | 2008-11-28 17:10:45 +1100 | [diff] [blame] | 989 | if (likely(!memcmp(tx_hdr->addr2, rx_hdr->addr1, ETH_ALEN))) |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 990 | { |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 991 | found = 1; |
| 992 | break; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 993 | } |
| 994 | } |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 995 | |
| 996 | if (found) { |
| 997 | for (i=1; i<position; i++) { |
| 998 | skb = __skb_dequeue(q); |
| 999 | zd_mac_tx_status(hw, skb, |
| 1000 | mac->ack_pending ? mac->ack_signal : 0, |
| 1001 | NULL); |
| 1002 | mac->ack_pending = 0; |
| 1003 | } |
| 1004 | |
| 1005 | mac->ack_pending = 1; |
| 1006 | mac->ack_signal = stats->signal; |
Jussi Kivilinna | f773e40 | 2011-01-31 20:48:16 +0200 | [diff] [blame] | 1007 | |
| 1008 | /* Prevent pending tx-packet on AP-mode */ |
| 1009 | if (mac->type == NL80211_IFTYPE_AP) { |
| 1010 | skb = __skb_dequeue(q); |
| 1011 | zd_mac_tx_status(hw, skb, mac->ack_signal, NULL); |
| 1012 | mac->ack_pending = 0; |
| 1013 | } |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 1014 | } |
| 1015 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1016 | spin_unlock_irqrestore(&q->lock, flags); |
| 1017 | return 1; |
| 1018 | } |
| 1019 | |
| 1020 | int zd_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, unsigned int length) |
| 1021 | { |
| 1022 | struct zd_mac *mac = zd_hw_mac(hw); |
| 1023 | struct ieee80211_rx_status stats; |
| 1024 | const struct rx_status *status; |
| 1025 | struct sk_buff *skb; |
| 1026 | int bad_frame = 0; |
Harvey Harrison | 8536582 | 2008-06-14 23:33:39 -0700 | [diff] [blame] | 1027 | __le16 fc; |
| 1028 | int need_padding; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1029 | int i; |
| 1030 | u8 rate; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1031 | |
| 1032 | if (length < ZD_PLCP_HEADER_SIZE + 10 /* IEEE80211_1ADDR_LEN */ + |
| 1033 | FCS_LEN + sizeof(struct rx_status)) |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 1034 | return -EINVAL; |
| 1035 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1036 | memset(&stats, 0, sizeof(stats)); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 1037 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1038 | /* Note about pass_failed_fcs and pass_ctrl access below: |
| 1039 | * mac locking intentionally omitted here, as this is the only unlocked |
| 1040 | * reader and the only writer is configure_filter. Plus, if there were |
| 1041 | * any races accessing these variables, it wouldn't really matter. |
| 1042 | * If mac80211 ever provides a way for us to access filter flags |
| 1043 | * from outside configure_filter, we could improve on this. Also, this |
| 1044 | * situation may change once we implement some kind of DMA-into-skb |
| 1045 | * RX path. */ |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 1046 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1047 | /* Caller has to ensure that length >= sizeof(struct rx_status). */ |
| 1048 | status = (struct rx_status *) |
Ulrich Kunitz | 937a049 | 2007-10-02 18:36:53 +0100 | [diff] [blame] | 1049 | (buffer + (length - sizeof(struct rx_status))); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 1050 | if (status->frame_status & ZD_RX_ERROR) { |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1051 | if (mac->pass_failed_fcs && |
| 1052 | (status->frame_status & ZD_RX_CRC32_ERROR)) { |
| 1053 | stats.flag |= RX_FLAG_FAILED_FCS_CRC; |
| 1054 | bad_frame = 1; |
| 1055 | } else { |
| 1056 | return -EINVAL; |
Ulrich Kunitz | 22d3405 | 2007-01-29 01:00:03 +0000 | [diff] [blame] | 1057 | } |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 1058 | } |
Ulrich Kunitz | 22d3405 | 2007-01-29 01:00:03 +0000 | [diff] [blame] | 1059 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1060 | stats.freq = zd_channels[_zd_chip_get_channel(&mac->chip) - 1].center_freq; |
| 1061 | stats.band = IEEE80211_BAND_2GHZ; |
Jussi Kivilinna | 7a1d656 | 2011-06-20 14:42:28 +0300 | [diff] [blame] | 1062 | stats.signal = zd_check_signal(hw, status->signal_strength); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1063 | |
| 1064 | rate = zd_rx_rate(buffer, status); |
| 1065 | |
| 1066 | /* todo: return index in the big switches in zd_rx_rate instead */ |
| 1067 | for (i = 0; i < mac->band.n_bitrates; i++) |
| 1068 | if (rate == mac->band.bitrates[i].hw_value) |
| 1069 | stats.rate_idx = i; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 1070 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1071 | length -= ZD_PLCP_HEADER_SIZE + sizeof(struct rx_status); |
| 1072 | buffer += ZD_PLCP_HEADER_SIZE; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 1073 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1074 | /* Except for bad frames, filter each frame to see if it is an ACK, in |
| 1075 | * which case our internal TX tracking is updated. Normally we then |
| 1076 | * bail here as there's no need to pass ACKs on up to the stack, but |
| 1077 | * there is also the case where the stack has requested us to pass |
| 1078 | * control frames on up (pass_ctrl) which we must consider. */ |
| 1079 | if (!bad_frame && |
| 1080 | filter_ack(hw, (struct ieee80211_hdr *)buffer, &stats) |
| 1081 | && !mac->pass_ctrl) |
| 1082 | return 0; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 1083 | |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 1084 | fc = get_unaligned((__le16*)buffer); |
Harvey Harrison | 8536582 | 2008-06-14 23:33:39 -0700 | [diff] [blame] | 1085 | need_padding = ieee80211_is_data_qos(fc) ^ ieee80211_has_a4(fc); |
Michael Buesch | 9081728 | 2007-12-29 17:24:23 +0100 | [diff] [blame] | 1086 | |
| 1087 | skb = dev_alloc_skb(length + (need_padding ? 2 : 0)); |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1088 | if (skb == NULL) |
Ulrich Kunitz | 4d1feab | 2006-12-10 11:13:12 -0800 | [diff] [blame] | 1089 | return -ENOMEM; |
Michael Buesch | 9081728 | 2007-12-29 17:24:23 +0100 | [diff] [blame] | 1090 | if (need_padding) { |
Walter Goldens | 77c2061 | 2010-05-18 04:44:54 -0700 | [diff] [blame] | 1091 | /* Make sure the payload data is 4 byte aligned. */ |
Michael Buesch | 9081728 | 2007-12-29 17:24:23 +0100 | [diff] [blame] | 1092 | skb_reserve(skb, 2); |
| 1093 | } |
| 1094 | |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 1095 | /* FIXME : could we avoid this big memcpy ? */ |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1096 | memcpy(skb_put(skb, length), buffer, length); |
| 1097 | |
Johannes Berg | f1d58c2 | 2009-06-17 13:13:00 +0200 | [diff] [blame] | 1098 | memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats)); |
| 1099 | ieee80211_rx_irqsafe(hw, skb); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 1100 | return 0; |
| 1101 | } |
| 1102 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1103 | static int zd_op_add_interface(struct ieee80211_hw *hw, |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 1104 | struct ieee80211_vif *vif) |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 1105 | { |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1106 | struct zd_mac *mac = zd_hw_mac(hw); |
| 1107 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1108 | /* using NL80211_IFTYPE_UNSPECIFIED to indicate no mode selected */ |
| 1109 | if (mac->type != NL80211_IFTYPE_UNSPECIFIED) |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1110 | return -EOPNOTSUPP; |
| 1111 | |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 1112 | switch (vif->type) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1113 | case NL80211_IFTYPE_MONITOR: |
| 1114 | case NL80211_IFTYPE_MESH_POINT: |
| 1115 | case NL80211_IFTYPE_STATION: |
| 1116 | case NL80211_IFTYPE_ADHOC: |
Jussi Kivilinna | ab419e9 | 2011-01-31 20:50:21 +0200 | [diff] [blame] | 1117 | case NL80211_IFTYPE_AP: |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 1118 | mac->type = vif->type; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1119 | break; |
| 1120 | default: |
| 1121 | return -EOPNOTSUPP; |
| 1122 | } |
| 1123 | |
Jussi Kivilinna | c2fadcb | 2011-01-31 20:48:06 +0200 | [diff] [blame] | 1124 | mac->vif = vif; |
| 1125 | |
| 1126 | return set_mac_and_bssid(mac); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 1127 | } |
| 1128 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1129 | static void zd_op_remove_interface(struct ieee80211_hw *hw, |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 1130 | struct ieee80211_vif *vif) |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 1131 | { |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1132 | struct zd_mac *mac = zd_hw_mac(hw); |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1133 | mac->type = NL80211_IFTYPE_UNSPECIFIED; |
Jussi Kivilinna | c2fadcb | 2011-01-31 20:48:06 +0200 | [diff] [blame] | 1134 | mac->vif = NULL; |
Jussi Kivilinna | b91a515 | 2011-01-31 20:48:25 +0200 | [diff] [blame] | 1135 | zd_set_beacon_interval(&mac->chip, 0, 0, NL80211_IFTYPE_UNSPECIFIED); |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1136 | zd_write_mac_addr(&mac->chip, NULL); |
Jussi Kivilinna | f762d8c | 2011-06-20 14:42:39 +0300 | [diff] [blame] | 1137 | |
| 1138 | zd_mac_free_cur_beacon(mac); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 1139 | } |
| 1140 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 1141 | static int zd_op_config(struct ieee80211_hw *hw, u32 changed) |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 1142 | { |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1143 | struct zd_mac *mac = zd_hw_mac(hw); |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 1144 | struct ieee80211_conf *conf = &hw->conf; |
| 1145 | |
Jussi Kivilinna | 212e1a5 | 2011-01-31 20:49:43 +0200 | [diff] [blame] | 1146 | spin_lock_irq(&mac->lock); |
| 1147 | mac->channel = conf->channel->hw_value; |
| 1148 | spin_unlock_irq(&mac->lock); |
| 1149 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1150 | return zd_chip_set_channel(&mac->chip, conf->channel->hw_value); |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 1151 | } |
| 1152 | |
Jussi Kivilinna | 4099e2f | 2011-01-31 20:48:35 +0200 | [diff] [blame] | 1153 | static void zd_beacon_done(struct zd_mac *mac) |
| 1154 | { |
| 1155 | struct sk_buff *skb, *beacon; |
| 1156 | |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 1157 | if (!test_bit(ZD_DEVICE_RUNNING, &mac->flags)) |
| 1158 | return; |
Jussi Kivilinna | 4099e2f | 2011-01-31 20:48:35 +0200 | [diff] [blame] | 1159 | if (!mac->vif || mac->vif->type != NL80211_IFTYPE_AP) |
| 1160 | return; |
| 1161 | |
| 1162 | /* |
| 1163 | * Send out buffered broad- and multicast frames. |
| 1164 | */ |
| 1165 | while (!ieee80211_queue_stopped(mac->hw, 0)) { |
| 1166 | skb = ieee80211_get_buffered_bc(mac->hw, mac->vif); |
| 1167 | if (!skb) |
| 1168 | break; |
| 1169 | zd_op_tx(mac->hw, skb); |
| 1170 | } |
| 1171 | |
| 1172 | /* |
| 1173 | * Fetch next beacon so that tim_count is updated. |
| 1174 | */ |
| 1175 | beacon = ieee80211_beacon_get(mac->hw, mac->vif); |
Jussi Kivilinna | f762d8c | 2011-06-20 14:42:39 +0300 | [diff] [blame] | 1176 | if (beacon) |
Jussi Kivilinna | dde4673 | 2011-06-20 14:42:49 +0300 | [diff] [blame] | 1177 | zd_mac_config_beacon(mac->hw, beacon, true); |
Jussi Kivilinna | 4099e2f | 2011-01-31 20:48:35 +0200 | [diff] [blame] | 1178 | |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 1179 | spin_lock_irq(&mac->lock); |
| 1180 | mac->beacon.last_update = jiffies; |
| 1181 | spin_unlock_irq(&mac->lock); |
Jussi Kivilinna | 4099e2f | 2011-01-31 20:48:35 +0200 | [diff] [blame] | 1182 | } |
| 1183 | |
Luis R. Rodriguez | e83a107 | 2008-09-09 23:19:49 -0700 | [diff] [blame] | 1184 | static void zd_process_intr(struct work_struct *work) |
Luis Carlos Cobo | 72e77a8 | 2008-03-03 12:32:15 -0800 | [diff] [blame] | 1185 | { |
| 1186 | u16 int_status; |
Jussi Kivilinna | 8b17f75 | 2011-01-31 20:47:27 +0200 | [diff] [blame] | 1187 | unsigned long flags; |
Luis Carlos Cobo | 72e77a8 | 2008-03-03 12:32:15 -0800 | [diff] [blame] | 1188 | struct zd_mac *mac = container_of(work, struct zd_mac, process_intr); |
| 1189 | |
Jussi Kivilinna | 8b17f75 | 2011-01-31 20:47:27 +0200 | [diff] [blame] | 1190 | spin_lock_irqsave(&mac->lock, flags); |
| 1191 | int_status = le16_to_cpu(*(__le16 *)(mac->intr_buffer + 4)); |
| 1192 | spin_unlock_irqrestore(&mac->lock, flags); |
| 1193 | |
Jussi Kivilinna | 4099e2f | 2011-01-31 20:48:35 +0200 | [diff] [blame] | 1194 | if (int_status & INT_CFG_NEXT_BCN) { |
| 1195 | /*dev_dbg_f_limit(zd_mac_dev(mac), "INT_CFG_NEXT_BCN\n");*/ |
| 1196 | zd_beacon_done(mac); |
| 1197 | } else { |
Luis Carlos Cobo | 72e77a8 | 2008-03-03 12:32:15 -0800 | [diff] [blame] | 1198 | dev_dbg_f(zd_mac_dev(mac), "Unsupported interrupt\n"); |
Jussi Kivilinna | 4099e2f | 2011-01-31 20:48:35 +0200 | [diff] [blame] | 1199 | } |
Luis Carlos Cobo | 72e77a8 | 2008-03-03 12:32:15 -0800 | [diff] [blame] | 1200 | |
| 1201 | zd_chip_enable_hwint(&mac->chip); |
| 1202 | } |
| 1203 | |
| 1204 | |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1205 | static u64 zd_op_prepare_multicast(struct ieee80211_hw *hw, |
Jiri Pirko | 22bedad | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1206 | struct netdev_hw_addr_list *mc_list) |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1207 | { |
| 1208 | struct zd_mac *mac = zd_hw_mac(hw); |
| 1209 | struct zd_mc_hash hash; |
Jiri Pirko | 22bedad | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1210 | struct netdev_hw_addr *ha; |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1211 | |
| 1212 | zd_mc_clear(&hash); |
| 1213 | |
Jiri Pirko | 22bedad | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1214 | netdev_hw_addr_list_for_each(ha, mc_list) { |
| 1215 | dev_dbg_f(zd_mac_dev(mac), "mc addr %pM\n", ha->addr); |
| 1216 | zd_mc_add_addr(&hash, ha->addr); |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1217 | } |
| 1218 | |
| 1219 | return hash.low | ((u64)hash.high << 32); |
| 1220 | } |
| 1221 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1222 | #define SUPPORTED_FIF_FLAGS \ |
| 1223 | (FIF_PROMISC_IN_BSS | FIF_ALLMULTI | FIF_FCSFAIL | FIF_CONTROL | \ |
Michael Buesch | 2c1a1b1 | 2008-02-10 16:03:55 +0100 | [diff] [blame] | 1224 | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC) |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1225 | static void zd_op_configure_filter(struct ieee80211_hw *hw, |
| 1226 | unsigned int changed_flags, |
| 1227 | unsigned int *new_flags, |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1228 | u64 multicast) |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1229 | { |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1230 | struct zd_mc_hash hash = { |
| 1231 | .low = multicast, |
| 1232 | .high = multicast >> 32, |
| 1233 | }; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1234 | struct zd_mac *mac = zd_hw_mac(hw); |
| 1235 | unsigned long flags; |
Jussi Kivilinna | a6fb071 | 2011-01-31 20:47:46 +0200 | [diff] [blame] | 1236 | int r; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1237 | |
| 1238 | /* Only deal with supported flags */ |
| 1239 | changed_flags &= SUPPORTED_FIF_FLAGS; |
| 1240 | *new_flags &= SUPPORTED_FIF_FLAGS; |
| 1241 | |
Benoit Papillault | 7de3c5d | 2010-01-03 10:20:01 +0100 | [diff] [blame] | 1242 | /* |
| 1243 | * If multicast parameter (as returned by zd_op_prepare_multicast) |
| 1244 | * has changed, no bit in changed_flags is set. To handle this |
| 1245 | * situation, we do not return if changed_flags is 0. If we do so, |
| 1246 | * we will have some issue with IPv6 which uses multicast for link |
| 1247 | * layer address resolution. |
| 1248 | */ |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1249 | if (*new_flags & (FIF_PROMISC_IN_BSS | FIF_ALLMULTI)) |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1250 | zd_mc_add_all(&hash); |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1251 | |
| 1252 | spin_lock_irqsave(&mac->lock, flags); |
| 1253 | mac->pass_failed_fcs = !!(*new_flags & FIF_FCSFAIL); |
| 1254 | mac->pass_ctrl = !!(*new_flags & FIF_CONTROL); |
| 1255 | mac->multicast_hash = hash; |
| 1256 | spin_unlock_irqrestore(&mac->lock, flags); |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1257 | |
Jussi Kivilinna | a6fb071 | 2011-01-31 20:47:46 +0200 | [diff] [blame] | 1258 | zd_chip_set_multicast_hash(&mac->chip, &hash); |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1259 | |
Jussi Kivilinna | a6fb071 | 2011-01-31 20:47:46 +0200 | [diff] [blame] | 1260 | if (changed_flags & FIF_CONTROL) { |
| 1261 | r = set_rx_filter(mac); |
| 1262 | if (r) |
| 1263 | dev_err(zd_mac_dev(mac), "set_rx_filter error %d\n", r); |
| 1264 | } |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1265 | |
| 1266 | /* no handling required for FIF_OTHER_BSS as we don't currently |
| 1267 | * do BSSID filtering */ |
| 1268 | /* FIXME: in future it would be nice to enable the probe response |
| 1269 | * filter (so that the driver doesn't see them) until |
| 1270 | * FIF_BCN_PRBRESP_PROMISC is set. however due to atomicity here, we'd |
| 1271 | * have to schedule work to enable prbresp reception, which might |
| 1272 | * happen too late. For now we'll just listen and forward them all the |
| 1273 | * time. */ |
| 1274 | } |
| 1275 | |
Jussi Kivilinna | 5cf6cf8 | 2011-01-31 20:47:56 +0200 | [diff] [blame] | 1276 | static void set_rts_cts(struct zd_mac *mac, unsigned int short_preamble) |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1277 | { |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1278 | mutex_lock(&mac->chip.mutex); |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1279 | zd_chip_set_rts_cts_rate_locked(&mac->chip, short_preamble); |
| 1280 | mutex_unlock(&mac->chip.mutex); |
| 1281 | } |
| 1282 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1283 | static void zd_op_bss_info_changed(struct ieee80211_hw *hw, |
| 1284 | struct ieee80211_vif *vif, |
| 1285 | struct ieee80211_bss_conf *bss_conf, |
| 1286 | u32 changes) |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1287 | { |
| 1288 | struct zd_mac *mac = zd_hw_mac(hw); |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 1289 | int associated; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1290 | |
| 1291 | dev_dbg_f(zd_mac_dev(mac), "changes: %x\n", changes); |
| 1292 | |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 1293 | if (mac->type == NL80211_IFTYPE_MESH_POINT || |
Jussi Kivilinna | ab419e9 | 2011-01-31 20:50:21 +0200 | [diff] [blame] | 1294 | mac->type == NL80211_IFTYPE_ADHOC || |
| 1295 | mac->type == NL80211_IFTYPE_AP) { |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 1296 | associated = true; |
| 1297 | if (changes & BSS_CHANGED_BEACON) { |
| 1298 | struct sk_buff *beacon = ieee80211_beacon_get(hw, vif); |
| 1299 | |
| 1300 | if (beacon) { |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 1301 | zd_chip_disable_hwint(&mac->chip); |
Jussi Kivilinna | dde4673 | 2011-06-20 14:42:49 +0300 | [diff] [blame] | 1302 | zd_mac_config_beacon(hw, beacon, false); |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 1303 | zd_chip_enable_hwint(&mac->chip); |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 1304 | } |
| 1305 | } |
| 1306 | |
| 1307 | if (changes & BSS_CHANGED_BEACON_ENABLED) { |
Jussi Kivilinna | b91a515 | 2011-01-31 20:48:25 +0200 | [diff] [blame] | 1308 | u16 interval = 0; |
| 1309 | u8 period = 0; |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 1310 | |
Jussi Kivilinna | b91a515 | 2011-01-31 20:48:25 +0200 | [diff] [blame] | 1311 | if (bss_conf->enable_beacon) { |
| 1312 | period = bss_conf->dtim_period; |
| 1313 | interval = bss_conf->beacon_int; |
| 1314 | } |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 1315 | |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 1316 | spin_lock_irq(&mac->lock); |
| 1317 | mac->beacon.period = period; |
| 1318 | mac->beacon.interval = interval; |
| 1319 | mac->beacon.last_update = jiffies; |
| 1320 | spin_unlock_irq(&mac->lock); |
| 1321 | |
Jussi Kivilinna | b91a515 | 2011-01-31 20:48:25 +0200 | [diff] [blame] | 1322 | zd_set_beacon_interval(&mac->chip, interval, period, |
| 1323 | mac->type); |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 1324 | } |
| 1325 | } else |
| 1326 | associated = is_valid_ether_addr(bss_conf->bssid); |
| 1327 | |
| 1328 | spin_lock_irq(&mac->lock); |
| 1329 | mac->associated = associated; |
| 1330 | spin_unlock_irq(&mac->lock); |
| 1331 | |
| 1332 | /* TODO: do hardware bssid filtering */ |
| 1333 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1334 | if (changes & BSS_CHANGED_ERP_PREAMBLE) { |
Jussi Kivilinna | 5cf6cf8 | 2011-01-31 20:47:56 +0200 | [diff] [blame] | 1335 | spin_lock_irq(&mac->lock); |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1336 | mac->short_preamble = bss_conf->use_short_preamble; |
Jussi Kivilinna | 5cf6cf8 | 2011-01-31 20:47:56 +0200 | [diff] [blame] | 1337 | spin_unlock_irq(&mac->lock); |
| 1338 | |
| 1339 | set_rts_cts(mac, bss_conf->use_short_preamble); |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1340 | } |
| 1341 | } |
| 1342 | |
Eliad Peller | 37a41b4 | 2011-09-21 14:06:11 +0300 | [diff] [blame] | 1343 | static u64 zd_op_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
Alina Friedrichsen | 5fe7319 | 2009-02-25 00:49:18 +0100 | [diff] [blame] | 1344 | { |
| 1345 | struct zd_mac *mac = zd_hw_mac(hw); |
| 1346 | return zd_chip_get_tsf(&mac->chip); |
| 1347 | } |
| 1348 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1349 | static const struct ieee80211_ops zd_ops = { |
| 1350 | .tx = zd_op_tx, |
| 1351 | .start = zd_op_start, |
| 1352 | .stop = zd_op_stop, |
| 1353 | .add_interface = zd_op_add_interface, |
| 1354 | .remove_interface = zd_op_remove_interface, |
| 1355 | .config = zd_op_config, |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1356 | .prepare_multicast = zd_op_prepare_multicast, |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1357 | .configure_filter = zd_op_configure_filter, |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1358 | .bss_info_changed = zd_op_bss_info_changed, |
Alina Friedrichsen | 5fe7319 | 2009-02-25 00:49:18 +0100 | [diff] [blame] | 1359 | .get_tsf = zd_op_get_tsf, |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1360 | }; |
| 1361 | |
| 1362 | struct ieee80211_hw *zd_mac_alloc_hw(struct usb_interface *intf) |
| 1363 | { |
| 1364 | struct zd_mac *mac; |
| 1365 | struct ieee80211_hw *hw; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1366 | |
| 1367 | hw = ieee80211_alloc_hw(sizeof(struct zd_mac), &zd_ops); |
| 1368 | if (!hw) { |
| 1369 | dev_dbg_f(&intf->dev, "out of memory\n"); |
| 1370 | return NULL; |
| 1371 | } |
| 1372 | |
| 1373 | mac = zd_hw_mac(hw); |
| 1374 | |
| 1375 | memset(mac, 0, sizeof(*mac)); |
| 1376 | spin_lock_init(&mac->lock); |
| 1377 | mac->hw = hw; |
| 1378 | |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 1379 | mac->type = NL80211_IFTYPE_UNSPECIFIED; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1380 | |
| 1381 | memcpy(mac->channels, zd_channels, sizeof(zd_channels)); |
| 1382 | memcpy(mac->rates, zd_rates, sizeof(zd_rates)); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1383 | mac->band.n_bitrates = ARRAY_SIZE(zd_rates); |
| 1384 | mac->band.bitrates = mac->rates; |
| 1385 | mac->band.n_channels = ARRAY_SIZE(zd_channels); |
| 1386 | mac->band.channels = mac->channels; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1387 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1388 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &mac->band; |
| 1389 | |
Luis Carlos Cobo | 72e77a8 | 2008-03-03 12:32:15 -0800 | [diff] [blame] | 1390 | hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | |
Jussi Kivilinna | 4099e2f | 2011-01-31 20:48:35 +0200 | [diff] [blame] | 1391 | IEEE80211_HW_SIGNAL_UNSPEC | |
| 1392 | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1393 | |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 1394 | hw->wiphy->interface_modes = |
| 1395 | BIT(NL80211_IFTYPE_MESH_POINT) | |
| 1396 | BIT(NL80211_IFTYPE_STATION) | |
Jussi Kivilinna | ab419e9 | 2011-01-31 20:50:21 +0200 | [diff] [blame] | 1397 | BIT(NL80211_IFTYPE_ADHOC) | |
| 1398 | BIT(NL80211_IFTYPE_AP); |
Luis R. Rodriguez | f59ac04 | 2008-08-29 16:26:43 -0700 | [diff] [blame] | 1399 | |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 1400 | hw->max_signal = 100; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1401 | hw->queues = 1; |
| 1402 | hw->extra_tx_headroom = sizeof(struct zd_ctrlset); |
| 1403 | |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 1404 | /* |
| 1405 | * Tell mac80211 that we support multi rate retries |
| 1406 | */ |
| 1407 | hw->max_rates = IEEE80211_TX_MAX_RATES; |
| 1408 | hw->max_rate_tries = 18; /* 9 rates * 2 retries/rate */ |
| 1409 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1410 | skb_queue_head_init(&mac->ack_wait_queue); |
Benoit PAPILLAULT | 7f4013f | 2009-10-22 12:04:52 +0200 | [diff] [blame] | 1411 | mac->ack_pending = 0; |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1412 | |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1413 | zd_chip_init(&mac->chip, hw, intf); |
| 1414 | housekeeping_init(mac); |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 1415 | beacon_init(mac); |
Luis Carlos Cobo | 72e77a8 | 2008-03-03 12:32:15 -0800 | [diff] [blame] | 1416 | INIT_WORK(&mac->process_intr, zd_process_intr); |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1417 | |
| 1418 | SET_IEEE80211_DEV(hw, &intf->dev); |
| 1419 | return hw; |
Daniel Drake | e85d091 | 2006-06-02 17:11:32 +0100 | [diff] [blame] | 1420 | } |
| 1421 | |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 1422 | #define BEACON_WATCHDOG_DELAY round_jiffies_relative(HZ) |
| 1423 | |
| 1424 | static void beacon_watchdog_handler(struct work_struct *work) |
| 1425 | { |
| 1426 | struct zd_mac *mac = |
| 1427 | container_of(work, struct zd_mac, beacon.watchdog_work.work); |
| 1428 | struct sk_buff *beacon; |
| 1429 | unsigned long timeout; |
| 1430 | int interval, period; |
| 1431 | |
| 1432 | if (!test_bit(ZD_DEVICE_RUNNING, &mac->flags)) |
| 1433 | goto rearm; |
| 1434 | if (mac->type != NL80211_IFTYPE_AP || !mac->vif) |
| 1435 | goto rearm; |
| 1436 | |
| 1437 | spin_lock_irq(&mac->lock); |
| 1438 | interval = mac->beacon.interval; |
| 1439 | period = mac->beacon.period; |
Jussi Kivilinna | 55f7782 | 2011-06-20 14:42:54 +0300 | [diff] [blame] | 1440 | timeout = mac->beacon.last_update + |
| 1441 | msecs_to_jiffies(interval * 1024 / 1000) * 3; |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 1442 | spin_unlock_irq(&mac->lock); |
| 1443 | |
| 1444 | if (interval > 0 && time_is_before_jiffies(timeout)) { |
| 1445 | dev_dbg_f(zd_mac_dev(mac), "beacon interrupt stalled, " |
| 1446 | "restarting. " |
| 1447 | "(interval: %d, dtim: %d)\n", |
| 1448 | interval, period); |
| 1449 | |
| 1450 | zd_chip_disable_hwint(&mac->chip); |
| 1451 | |
| 1452 | beacon = ieee80211_beacon_get(mac->hw, mac->vif); |
| 1453 | if (beacon) { |
Jussi Kivilinna | f762d8c | 2011-06-20 14:42:39 +0300 | [diff] [blame] | 1454 | zd_mac_free_cur_beacon(mac); |
| 1455 | |
Jussi Kivilinna | dde4673 | 2011-06-20 14:42:49 +0300 | [diff] [blame] | 1456 | zd_mac_config_beacon(mac->hw, beacon, false); |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 1457 | } |
| 1458 | |
| 1459 | zd_set_beacon_interval(&mac->chip, interval, period, mac->type); |
| 1460 | |
| 1461 | zd_chip_enable_hwint(&mac->chip); |
| 1462 | |
| 1463 | spin_lock_irq(&mac->lock); |
| 1464 | mac->beacon.last_update = jiffies; |
| 1465 | spin_unlock_irq(&mac->lock); |
| 1466 | } |
| 1467 | |
| 1468 | rearm: |
| 1469 | queue_delayed_work(zd_workqueue, &mac->beacon.watchdog_work, |
| 1470 | BEACON_WATCHDOG_DELAY); |
| 1471 | } |
| 1472 | |
| 1473 | static void beacon_init(struct zd_mac *mac) |
| 1474 | { |
| 1475 | INIT_DELAYED_WORK(&mac->beacon.watchdog_work, beacon_watchdog_handler); |
| 1476 | } |
| 1477 | |
| 1478 | static void beacon_enable(struct zd_mac *mac) |
| 1479 | { |
| 1480 | dev_dbg_f(zd_mac_dev(mac), "\n"); |
| 1481 | |
| 1482 | mac->beacon.last_update = jiffies; |
| 1483 | queue_delayed_work(zd_workqueue, &mac->beacon.watchdog_work, |
| 1484 | BEACON_WATCHDOG_DELAY); |
| 1485 | } |
| 1486 | |
| 1487 | static void beacon_disable(struct zd_mac *mac) |
| 1488 | { |
| 1489 | dev_dbg_f(zd_mac_dev(mac), "\n"); |
| 1490 | cancel_delayed_work_sync(&mac->beacon.watchdog_work); |
Jussi Kivilinna | f762d8c | 2011-06-20 14:42:39 +0300 | [diff] [blame] | 1491 | |
| 1492 | zd_mac_free_cur_beacon(mac); |
Jussi Kivilinna | 9be2325 | 2011-01-31 20:48:55 +0200 | [diff] [blame] | 1493 | } |
| 1494 | |
Ulrich Kunitz | 583afd1 | 2006-09-13 02:42:38 +0100 | [diff] [blame] | 1495 | #define LINK_LED_WORK_DELAY HZ |
| 1496 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 1497 | static void link_led_handler(struct work_struct *work) |
Ulrich Kunitz | 583afd1 | 2006-09-13 02:42:38 +0100 | [diff] [blame] | 1498 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 1499 | struct zd_mac *mac = |
| 1500 | container_of(work, struct zd_mac, housekeeping.link_led_work.work); |
Ulrich Kunitz | 583afd1 | 2006-09-13 02:42:38 +0100 | [diff] [blame] | 1501 | struct zd_chip *chip = &mac->chip; |
Ulrich Kunitz | 583afd1 | 2006-09-13 02:42:38 +0100 | [diff] [blame] | 1502 | int is_associated; |
| 1503 | int r; |
| 1504 | |
Jussi Kivilinna | a0fd751 | 2011-01-31 20:49:52 +0200 | [diff] [blame] | 1505 | if (!test_bit(ZD_DEVICE_RUNNING, &mac->flags)) |
| 1506 | goto requeue; |
| 1507 | |
Ulrich Kunitz | 583afd1 | 2006-09-13 02:42:38 +0100 | [diff] [blame] | 1508 | spin_lock_irq(&mac->lock); |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1509 | is_associated = mac->associated; |
Ulrich Kunitz | 583afd1 | 2006-09-13 02:42:38 +0100 | [diff] [blame] | 1510 | spin_unlock_irq(&mac->lock); |
| 1511 | |
| 1512 | r = zd_chip_control_leds(chip, |
Luis R. Rodriguez | 14b46c8 | 2009-08-04 14:04:17 -0700 | [diff] [blame] | 1513 | is_associated ? ZD_LED_ASSOCIATED : ZD_LED_SCANNING); |
Ulrich Kunitz | 583afd1 | 2006-09-13 02:42:38 +0100 | [diff] [blame] | 1514 | if (r) |
Daniel Drake | 459c51a | 2007-11-19 15:00:29 +0000 | [diff] [blame] | 1515 | dev_dbg_f(zd_mac_dev(mac), "zd_chip_control_leds error %d\n", r); |
Ulrich Kunitz | 583afd1 | 2006-09-13 02:42:38 +0100 | [diff] [blame] | 1516 | |
Jussi Kivilinna | a0fd751 | 2011-01-31 20:49:52 +0200 | [diff] [blame] | 1517 | requeue: |
Ulrich Kunitz | 583afd1 | 2006-09-13 02:42:38 +0100 | [diff] [blame] | 1518 | queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work, |
| 1519 | LINK_LED_WORK_DELAY); |
| 1520 | } |
| 1521 | |
| 1522 | static void housekeeping_init(struct zd_mac *mac) |
| 1523 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 1524 | INIT_DELAYED_WORK(&mac->housekeeping.link_led_work, link_led_handler); |
Ulrich Kunitz | 583afd1 | 2006-09-13 02:42:38 +0100 | [diff] [blame] | 1525 | } |
| 1526 | |
| 1527 | static void housekeeping_enable(struct zd_mac *mac) |
| 1528 | { |
| 1529 | dev_dbg_f(zd_mac_dev(mac), "\n"); |
| 1530 | queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work, |
| 1531 | 0); |
| 1532 | } |
| 1533 | |
| 1534 | static void housekeeping_disable(struct zd_mac *mac) |
| 1535 | { |
| 1536 | dev_dbg_f(zd_mac_dev(mac), "\n"); |
Tejun Heo | afe2c51 | 2010-12-14 16:21:17 +0100 | [diff] [blame] | 1537 | cancel_delayed_work_sync(&mac->housekeeping.link_led_work); |
Luis R. Rodriguez | 14b46c8 | 2009-08-04 14:04:17 -0700 | [diff] [blame] | 1538 | zd_chip_control_leds(&mac->chip, ZD_LED_OFF); |
Ulrich Kunitz | 583afd1 | 2006-09-13 02:42:38 +0100 | [diff] [blame] | 1539 | } |