Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008, cozybit Inc. |
| 3 | * Copyright (C) 2003-2006, Marvell International Ltd. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or (at |
| 8 | * your option) any later version. |
| 9 | */ |
John W. Linville | edfcba1 | 2010-04-28 16:12:57 -0400 | [diff] [blame] | 10 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 11 | |
Alexey Dobriyan | a6b7a40 | 2011-06-06 10:43:46 +0000 | [diff] [blame] | 12 | #include <linux/hardirq.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 13 | #include <linux/slab.h> |
Paul Gortmaker | ee40fa0 | 2011-05-27 16:14:23 -0400 | [diff] [blame] | 14 | #include <linux/export.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 15 | |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 16 | #include "libertas_tf.h" |
| 17 | |
| 18 | static const struct channel_range channel_ranges[] = { |
| 19 | { LBTF_REGDOMAIN_US, 1, 12 }, |
| 20 | { LBTF_REGDOMAIN_CA, 1, 12 }, |
| 21 | { LBTF_REGDOMAIN_EU, 1, 14 }, |
| 22 | { LBTF_REGDOMAIN_JP, 1, 14 }, |
| 23 | { LBTF_REGDOMAIN_SP, 1, 14 }, |
| 24 | { LBTF_REGDOMAIN_FR, 1, 14 }, |
| 25 | }; |
| 26 | |
| 27 | static u16 lbtf_region_code_to_index[MRVDRV_MAX_REGION_CODE] = |
| 28 | { |
| 29 | LBTF_REGDOMAIN_US, LBTF_REGDOMAIN_CA, LBTF_REGDOMAIN_EU, |
| 30 | LBTF_REGDOMAIN_SP, LBTF_REGDOMAIN_FR, LBTF_REGDOMAIN_JP, |
| 31 | }; |
| 32 | |
| 33 | static struct cmd_ctrl_node *lbtf_get_cmd_ctrl_node(struct lbtf_private *priv); |
| 34 | |
| 35 | |
| 36 | /** |
| 37 | * lbtf_cmd_copyback - Simple callback that copies response back into command |
| 38 | * |
| 39 | * @priv A pointer to struct lbtf_private structure |
| 40 | * @extra A pointer to the original command structure for which |
| 41 | * 'resp' is a response |
| 42 | * @resp A pointer to the command response |
| 43 | * |
| 44 | * Returns: 0 on success, error on failure |
| 45 | */ |
| 46 | int lbtf_cmd_copyback(struct lbtf_private *priv, unsigned long extra, |
| 47 | struct cmd_header *resp) |
| 48 | { |
| 49 | struct cmd_header *buf = (void *)extra; |
| 50 | uint16_t copy_len; |
| 51 | |
| 52 | copy_len = min(le16_to_cpu(buf->size), le16_to_cpu(resp->size)); |
| 53 | memcpy(buf, resp, copy_len); |
| 54 | return 0; |
| 55 | } |
| 56 | EXPORT_SYMBOL_GPL(lbtf_cmd_copyback); |
| 57 | |
| 58 | #define CHAN_TO_IDX(chan) ((chan) - 1) |
| 59 | |
| 60 | static void lbtf_geo_init(struct lbtf_private *priv) |
| 61 | { |
| 62 | const struct channel_range *range = channel_ranges; |
| 63 | u8 ch; |
| 64 | int i; |
| 65 | |
| 66 | for (i = 0; i < ARRAY_SIZE(channel_ranges); i++) |
| 67 | if (channel_ranges[i].regdomain == priv->regioncode) { |
| 68 | range = &channel_ranges[i]; |
| 69 | break; |
| 70 | } |
| 71 | |
| 72 | for (ch = priv->range.start; ch < priv->range.end; ch++) |
| 73 | priv->channels[CHAN_TO_IDX(ch)].flags = 0; |
| 74 | } |
| 75 | |
| 76 | /** |
| 77 | * lbtf_update_hw_spec: Updates the hardware details. |
| 78 | * |
| 79 | * @priv A pointer to struct lbtf_private structure |
| 80 | * |
| 81 | * Returns: 0 on success, error on failure |
| 82 | */ |
| 83 | int lbtf_update_hw_spec(struct lbtf_private *priv) |
| 84 | { |
| 85 | struct cmd_ds_get_hw_spec cmd; |
| 86 | int ret = -1; |
| 87 | u32 i; |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 88 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 89 | lbtf_deb_enter(LBTF_DEB_CMD); |
| 90 | |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 91 | memset(&cmd, 0, sizeof(cmd)); |
| 92 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
| 93 | memcpy(cmd.permanentaddr, priv->current_addr, ETH_ALEN); |
| 94 | ret = lbtf_cmd_with_response(priv, CMD_GET_HW_SPEC, &cmd); |
| 95 | if (ret) |
| 96 | goto out; |
| 97 | |
| 98 | priv->fwcapinfo = le32_to_cpu(cmd.fwcapinfo); |
| 99 | |
| 100 | /* The firmware release is in an interesting format: the patch |
| 101 | * level is in the most significant nibble ... so fix that: */ |
| 102 | priv->fwrelease = le32_to_cpu(cmd.fwrelease); |
| 103 | priv->fwrelease = (priv->fwrelease << 8) | |
| 104 | (priv->fwrelease >> 24 & 0xff); |
| 105 | |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 106 | printk(KERN_INFO "libertastf: %pM, fw %u.%u.%up%u, cap 0x%08x\n", |
| 107 | cmd.permanentaddr, |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 108 | priv->fwrelease >> 24 & 0xff, |
| 109 | priv->fwrelease >> 16 & 0xff, |
| 110 | priv->fwrelease >> 8 & 0xff, |
| 111 | priv->fwrelease & 0xff, |
| 112 | priv->fwcapinfo); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 113 | lbtf_deb_cmd("GET_HW_SPEC: hardware interface 0x%x, hardware spec 0x%04x\n", |
| 114 | cmd.hwifversion, cmd.version); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 115 | |
| 116 | /* Clamp region code to 8-bit since FW spec indicates that it should |
| 117 | * only ever be 8-bit, even though the field size is 16-bit. Some |
| 118 | * firmware returns non-zero high 8 bits here. |
| 119 | */ |
| 120 | priv->regioncode = le16_to_cpu(cmd.regioncode) & 0xFF; |
| 121 | |
| 122 | for (i = 0; i < MRVDRV_MAX_REGION_CODE; i++) { |
| 123 | /* use the region code to search for the index */ |
| 124 | if (priv->regioncode == lbtf_region_code_to_index[i]) |
| 125 | break; |
| 126 | } |
| 127 | |
| 128 | /* if it's unidentified region code, use the default (USA) */ |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 129 | if (i >= MRVDRV_MAX_REGION_CODE) { |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 130 | priv->regioncode = 0x10; |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 131 | pr_info("unidentified region code; using the default (USA)\n"); |
| 132 | } |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 133 | |
| 134 | if (priv->current_addr[0] == 0xff) |
| 135 | memmove(priv->current_addr, cmd.permanentaddr, ETH_ALEN); |
| 136 | |
| 137 | SET_IEEE80211_PERM_ADDR(priv->hw, priv->current_addr); |
| 138 | |
| 139 | lbtf_geo_init(priv); |
| 140 | out: |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 141 | lbtf_deb_leave(LBTF_DEB_CMD); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 142 | return ret; |
| 143 | } |
| 144 | |
| 145 | /** |
| 146 | * lbtf_set_channel: Set the radio channel |
| 147 | * |
| 148 | * @priv A pointer to struct lbtf_private structure |
| 149 | * @channel The desired channel, or 0 to clear a locked channel |
| 150 | * |
| 151 | * Returns: 0 on success, error on failure |
| 152 | */ |
| 153 | int lbtf_set_channel(struct lbtf_private *priv, u8 channel) |
| 154 | { |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 155 | int ret = 0; |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 156 | struct cmd_ds_802_11_rf_channel cmd; |
| 157 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 158 | lbtf_deb_enter(LBTF_DEB_CMD); |
| 159 | |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 160 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
| 161 | cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_SET); |
| 162 | cmd.channel = cpu_to_le16(channel); |
| 163 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 164 | ret = lbtf_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd); |
| 165 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret); |
| 166 | return ret; |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 167 | } |
| 168 | |
| 169 | int lbtf_beacon_set(struct lbtf_private *priv, struct sk_buff *beacon) |
| 170 | { |
| 171 | struct cmd_ds_802_11_beacon_set cmd; |
| 172 | int size; |
| 173 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 174 | lbtf_deb_enter(LBTF_DEB_CMD); |
| 175 | |
| 176 | if (beacon->len > MRVL_MAX_BCN_SIZE) { |
| 177 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", -1); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 178 | return -1; |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 179 | } |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 180 | size = sizeof(cmd) - sizeof(cmd.beacon) + beacon->len; |
| 181 | cmd.hdr.size = cpu_to_le16(size); |
| 182 | cmd.len = cpu_to_le16(beacon->len); |
| 183 | memcpy(cmd.beacon, (u8 *) beacon->data, beacon->len); |
| 184 | |
| 185 | lbtf_cmd_async(priv, CMD_802_11_BEACON_SET, &cmd.hdr, size); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 186 | |
| 187 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", 0); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 188 | return 0; |
| 189 | } |
| 190 | |
| 191 | int lbtf_beacon_ctrl(struct lbtf_private *priv, bool beacon_enable, |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 192 | int beacon_int) |
| 193 | { |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 194 | struct cmd_ds_802_11_beacon_control cmd; |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 195 | lbtf_deb_enter(LBTF_DEB_CMD); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 196 | |
| 197 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
| 198 | cmd.action = cpu_to_le16(CMD_ACT_SET); |
| 199 | cmd.beacon_enable = cpu_to_le16(beacon_enable); |
| 200 | cmd.beacon_period = cpu_to_le16(beacon_int); |
| 201 | |
| 202 | lbtf_cmd_async(priv, CMD_802_11_BEACON_CTRL, &cmd.hdr, sizeof(cmd)); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 203 | |
| 204 | lbtf_deb_leave(LBTF_DEB_CMD); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 205 | return 0; |
| 206 | } |
| 207 | |
| 208 | static void lbtf_queue_cmd(struct lbtf_private *priv, |
| 209 | struct cmd_ctrl_node *cmdnode) |
| 210 | { |
| 211 | unsigned long flags; |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 212 | lbtf_deb_enter(LBTF_DEB_HOST); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 213 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 214 | if (!cmdnode) { |
| 215 | lbtf_deb_host("QUEUE_CMD: cmdnode is NULL\n"); |
| 216 | goto qcmd_done; |
| 217 | } |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 218 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 219 | if (!cmdnode->cmdbuf->size) { |
| 220 | lbtf_deb_host("DNLD_CMD: cmd size is zero\n"); |
| 221 | goto qcmd_done; |
| 222 | } |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 223 | |
| 224 | cmdnode->result = 0; |
| 225 | spin_lock_irqsave(&priv->driver_lock, flags); |
| 226 | list_add_tail(&cmdnode->list, &priv->cmdpendingq); |
| 227 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 228 | |
| 229 | lbtf_deb_host("QUEUE_CMD: inserted command 0x%04x into cmdpendingq\n", |
| 230 | le16_to_cpu(cmdnode->cmdbuf->command)); |
| 231 | |
| 232 | qcmd_done: |
| 233 | lbtf_deb_leave(LBTF_DEB_HOST); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 234 | } |
| 235 | |
| 236 | static void lbtf_submit_command(struct lbtf_private *priv, |
| 237 | struct cmd_ctrl_node *cmdnode) |
| 238 | { |
| 239 | unsigned long flags; |
| 240 | struct cmd_header *cmd; |
| 241 | uint16_t cmdsize; |
| 242 | uint16_t command; |
| 243 | int timeo = 5 * HZ; |
| 244 | int ret; |
| 245 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 246 | lbtf_deb_enter(LBTF_DEB_HOST); |
| 247 | |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 248 | cmd = cmdnode->cmdbuf; |
| 249 | |
| 250 | spin_lock_irqsave(&priv->driver_lock, flags); |
| 251 | priv->cur_cmd = cmdnode; |
| 252 | cmdsize = le16_to_cpu(cmd->size); |
| 253 | command = le16_to_cpu(cmd->command); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 254 | |
| 255 | lbtf_deb_cmd("DNLD_CMD: command 0x%04x, seq %d, size %d\n", |
| 256 | command, le16_to_cpu(cmd->seqnum), cmdsize); |
| 257 | lbtf_deb_hex(LBTF_DEB_CMD, "DNLD_CMD", (void *) cmdnode->cmdbuf, cmdsize); |
| 258 | |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 259 | ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) cmd, cmdsize); |
| 260 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
| 261 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 262 | if (ret) { |
| 263 | pr_info("DNLD_CMD: hw_host_to_card failed: %d\n", ret); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 264 | /* Let the timer kick in and retry, and potentially reset |
| 265 | the whole thing if the condition persists */ |
| 266 | timeo = HZ; |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 267 | } |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 268 | |
| 269 | /* Setup the timer after transmit command */ |
| 270 | mod_timer(&priv->command_timer, jiffies + timeo); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 271 | |
| 272 | lbtf_deb_leave(LBTF_DEB_HOST); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 273 | } |
| 274 | |
| 275 | /** |
| 276 | * This function inserts command node to cmdfreeq |
| 277 | * after cleans it. Requires priv->driver_lock held. |
| 278 | */ |
| 279 | static void __lbtf_cleanup_and_insert_cmd(struct lbtf_private *priv, |
| 280 | struct cmd_ctrl_node *cmdnode) |
| 281 | { |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 282 | lbtf_deb_enter(LBTF_DEB_HOST); |
| 283 | |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 284 | if (!cmdnode) |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 285 | goto cl_ins_out; |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 286 | |
| 287 | cmdnode->callback = NULL; |
| 288 | cmdnode->callback_arg = 0; |
| 289 | |
| 290 | memset(cmdnode->cmdbuf, 0, LBS_CMD_BUFFER_SIZE); |
| 291 | |
| 292 | list_add_tail(&cmdnode->list, &priv->cmdfreeq); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 293 | |
| 294 | cl_ins_out: |
| 295 | lbtf_deb_leave(LBTF_DEB_HOST); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 296 | } |
| 297 | |
| 298 | static void lbtf_cleanup_and_insert_cmd(struct lbtf_private *priv, |
| 299 | struct cmd_ctrl_node *ptempcmd) |
| 300 | { |
| 301 | unsigned long flags; |
| 302 | |
| 303 | spin_lock_irqsave(&priv->driver_lock, flags); |
| 304 | __lbtf_cleanup_and_insert_cmd(priv, ptempcmd); |
| 305 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
| 306 | } |
| 307 | |
| 308 | void lbtf_complete_command(struct lbtf_private *priv, struct cmd_ctrl_node *cmd, |
| 309 | int result) |
| 310 | { |
| 311 | cmd->result = result; |
| 312 | cmd->cmdwaitqwoken = 1; |
| 313 | wake_up_interruptible(&cmd->cmdwait_q); |
| 314 | |
| 315 | if (!cmd->callback) |
| 316 | __lbtf_cleanup_and_insert_cmd(priv, cmd); |
| 317 | priv->cur_cmd = NULL; |
| 318 | } |
| 319 | |
| 320 | int lbtf_cmd_set_mac_multicast_addr(struct lbtf_private *priv) |
| 321 | { |
| 322 | struct cmd_ds_mac_multicast_addr cmd; |
| 323 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 324 | lbtf_deb_enter(LBTF_DEB_CMD); |
| 325 | |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 326 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
| 327 | cmd.action = cpu_to_le16(CMD_ACT_SET); |
| 328 | |
| 329 | cmd.nr_of_adrs = cpu_to_le16((u16) priv->nr_of_multicastmacaddr); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 330 | |
| 331 | lbtf_deb_cmd("MULTICAST_ADR: setting %d addresses\n", cmd.nr_of_adrs); |
| 332 | |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 333 | memcpy(cmd.maclist, priv->multicastlist, |
| 334 | priv->nr_of_multicastmacaddr * ETH_ALEN); |
| 335 | |
| 336 | lbtf_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &cmd.hdr, sizeof(cmd)); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 337 | |
| 338 | lbtf_deb_leave(LBTF_DEB_CMD); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 339 | return 0; |
| 340 | } |
| 341 | |
| 342 | void lbtf_set_mode(struct lbtf_private *priv, enum lbtf_mode mode) |
| 343 | { |
| 344 | struct cmd_ds_set_mode cmd; |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 345 | lbtf_deb_enter(LBTF_DEB_WEXT); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 346 | |
| 347 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
| 348 | cmd.mode = cpu_to_le16(mode); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 349 | lbtf_deb_wext("Switching to mode: 0x%x\n", mode); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 350 | lbtf_cmd_async(priv, CMD_802_11_SET_MODE, &cmd.hdr, sizeof(cmd)); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 351 | |
| 352 | lbtf_deb_leave(LBTF_DEB_WEXT); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 353 | } |
| 354 | |
Johannes Berg | 5f936f1 | 2009-01-21 12:47:05 +0100 | [diff] [blame] | 355 | void lbtf_set_bssid(struct lbtf_private *priv, bool activate, const u8 *bssid) |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 356 | { |
| 357 | struct cmd_ds_set_bssid cmd; |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 358 | lbtf_deb_enter(LBTF_DEB_CMD); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 359 | |
| 360 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
| 361 | cmd.activate = activate ? 1 : 0; |
| 362 | if (activate) |
| 363 | memcpy(cmd.bssid, bssid, ETH_ALEN); |
| 364 | |
| 365 | lbtf_cmd_async(priv, CMD_802_11_SET_BSSID, &cmd.hdr, sizeof(cmd)); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 366 | lbtf_deb_leave(LBTF_DEB_CMD); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 367 | } |
| 368 | |
| 369 | int lbtf_set_mac_address(struct lbtf_private *priv, uint8_t *mac_addr) |
| 370 | { |
| 371 | struct cmd_ds_802_11_mac_address cmd; |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 372 | lbtf_deb_enter(LBTF_DEB_CMD); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 373 | |
| 374 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
| 375 | cmd.action = cpu_to_le16(CMD_ACT_SET); |
| 376 | |
| 377 | memcpy(cmd.macadd, mac_addr, ETH_ALEN); |
| 378 | |
| 379 | lbtf_cmd_async(priv, CMD_802_11_MAC_ADDRESS, &cmd.hdr, sizeof(cmd)); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 380 | lbtf_deb_leave(LBTF_DEB_CMD); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 381 | return 0; |
| 382 | } |
| 383 | |
| 384 | int lbtf_set_radio_control(struct lbtf_private *priv) |
| 385 | { |
| 386 | int ret = 0; |
| 387 | struct cmd_ds_802_11_radio_control cmd; |
| 388 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 389 | lbtf_deb_enter(LBTF_DEB_CMD); |
| 390 | |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 391 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
| 392 | cmd.action = cpu_to_le16(CMD_ACT_SET); |
| 393 | |
| 394 | switch (priv->preamble) { |
| 395 | case CMD_TYPE_SHORT_PREAMBLE: |
| 396 | cmd.control = cpu_to_le16(SET_SHORT_PREAMBLE); |
| 397 | break; |
| 398 | |
| 399 | case CMD_TYPE_LONG_PREAMBLE: |
| 400 | cmd.control = cpu_to_le16(SET_LONG_PREAMBLE); |
| 401 | break; |
| 402 | |
| 403 | case CMD_TYPE_AUTO_PREAMBLE: |
| 404 | default: |
| 405 | cmd.control = cpu_to_le16(SET_AUTO_PREAMBLE); |
| 406 | break; |
| 407 | } |
| 408 | |
| 409 | if (priv->radioon) |
| 410 | cmd.control |= cpu_to_le16(TURN_ON_RF); |
| 411 | else |
| 412 | cmd.control &= cpu_to_le16(~TURN_ON_RF); |
| 413 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 414 | lbtf_deb_cmd("RADIO_SET: radio %d, preamble %d\n", priv->radioon, |
| 415 | priv->preamble); |
| 416 | |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 417 | ret = lbtf_cmd_with_response(priv, CMD_802_11_RADIO_CONTROL, &cmd); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 418 | |
| 419 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 420 | return ret; |
| 421 | } |
| 422 | |
| 423 | void lbtf_set_mac_control(struct lbtf_private *priv) |
| 424 | { |
| 425 | struct cmd_ds_mac_control cmd; |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 426 | lbtf_deb_enter(LBTF_DEB_CMD); |
| 427 | |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 428 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
| 429 | cmd.action = cpu_to_le16(priv->mac_control); |
| 430 | cmd.reserved = 0; |
| 431 | |
| 432 | lbtf_cmd_async(priv, CMD_MAC_CONTROL, |
| 433 | &cmd.hdr, sizeof(cmd)); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 434 | |
| 435 | lbtf_deb_leave(LBTF_DEB_CMD); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 436 | } |
| 437 | |
| 438 | /** |
| 439 | * lbtf_allocate_cmd_buffer - Allocates cmd buffer, links it to free cmd queue |
| 440 | * |
| 441 | * @priv A pointer to struct lbtf_private structure |
| 442 | * |
| 443 | * Returns: 0 on success. |
| 444 | */ |
| 445 | int lbtf_allocate_cmd_buffer(struct lbtf_private *priv) |
| 446 | { |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 447 | int ret = 0; |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 448 | u32 bufsize; |
| 449 | u32 i; |
| 450 | struct cmd_ctrl_node *cmdarray; |
| 451 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 452 | lbtf_deb_enter(LBTF_DEB_HOST); |
| 453 | |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 454 | /* Allocate and initialize the command array */ |
| 455 | bufsize = sizeof(struct cmd_ctrl_node) * LBS_NUM_CMD_BUFFERS; |
| 456 | cmdarray = kzalloc(bufsize, GFP_KERNEL); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 457 | if (!cmdarray) { |
| 458 | lbtf_deb_host("ALLOC_CMD_BUF: tempcmd_array is NULL\n"); |
| 459 | ret = -1; |
| 460 | goto done; |
| 461 | } |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 462 | priv->cmd_array = cmdarray; |
| 463 | |
| 464 | /* Allocate and initialize each command buffer in the command array */ |
| 465 | for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) { |
| 466 | cmdarray[i].cmdbuf = kzalloc(LBS_CMD_BUFFER_SIZE, GFP_KERNEL); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 467 | if (!cmdarray[i].cmdbuf) { |
| 468 | lbtf_deb_host("ALLOC_CMD_BUF: ptempvirtualaddr is NULL\n"); |
| 469 | ret = -1; |
| 470 | goto done; |
| 471 | } |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 472 | } |
| 473 | |
| 474 | for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) { |
| 475 | init_waitqueue_head(&cmdarray[i].cmdwait_q); |
| 476 | lbtf_cleanup_and_insert_cmd(priv, &cmdarray[i]); |
| 477 | } |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 478 | |
| 479 | ret = 0; |
| 480 | |
| 481 | done: |
| 482 | lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %d", ret); |
| 483 | return ret; |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 484 | } |
| 485 | |
| 486 | /** |
| 487 | * lbtf_free_cmd_buffer - Frees the cmd buffer. |
| 488 | * |
| 489 | * @priv A pointer to struct lbtf_private structure |
| 490 | * |
| 491 | * Returns: 0 |
| 492 | */ |
| 493 | int lbtf_free_cmd_buffer(struct lbtf_private *priv) |
| 494 | { |
| 495 | struct cmd_ctrl_node *cmdarray; |
| 496 | unsigned int i; |
| 497 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 498 | lbtf_deb_enter(LBTF_DEB_HOST); |
| 499 | |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 500 | /* need to check if cmd array is allocated or not */ |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 501 | if (priv->cmd_array == NULL) { |
| 502 | lbtf_deb_host("FREE_CMD_BUF: cmd_array is NULL\n"); |
| 503 | goto done; |
| 504 | } |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 505 | |
| 506 | cmdarray = priv->cmd_array; |
| 507 | |
| 508 | /* Release shared memory buffers */ |
| 509 | for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) { |
| 510 | kfree(cmdarray[i].cmdbuf); |
| 511 | cmdarray[i].cmdbuf = NULL; |
| 512 | } |
| 513 | |
| 514 | /* Release cmd_ctrl_node */ |
| 515 | kfree(priv->cmd_array); |
| 516 | priv->cmd_array = NULL; |
| 517 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 518 | done: |
| 519 | lbtf_deb_leave(LBTF_DEB_HOST); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 520 | return 0; |
| 521 | } |
| 522 | |
| 523 | /** |
| 524 | * lbtf_get_cmd_ctrl_node - Gets free cmd node from free cmd queue. |
| 525 | * |
| 526 | * @priv A pointer to struct lbtf_private structure |
| 527 | * |
| 528 | * Returns: pointer to a struct cmd_ctrl_node or NULL if none available. |
| 529 | */ |
| 530 | static struct cmd_ctrl_node *lbtf_get_cmd_ctrl_node(struct lbtf_private *priv) |
| 531 | { |
| 532 | struct cmd_ctrl_node *tempnode; |
| 533 | unsigned long flags; |
| 534 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 535 | lbtf_deb_enter(LBTF_DEB_HOST); |
| 536 | |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 537 | if (!priv) |
| 538 | return NULL; |
| 539 | |
| 540 | spin_lock_irqsave(&priv->driver_lock, flags); |
| 541 | |
| 542 | if (!list_empty(&priv->cmdfreeq)) { |
| 543 | tempnode = list_first_entry(&priv->cmdfreeq, |
| 544 | struct cmd_ctrl_node, list); |
| 545 | list_del(&tempnode->list); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 546 | } else { |
| 547 | lbtf_deb_host("GET_CMD_NODE: cmd_ctrl_node is not available\n"); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 548 | tempnode = NULL; |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 549 | } |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 550 | |
| 551 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
| 552 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 553 | lbtf_deb_leave(LBTF_DEB_HOST); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 554 | return tempnode; |
| 555 | } |
| 556 | |
| 557 | /** |
| 558 | * lbtf_execute_next_command: execute next command in cmd pending queue. |
| 559 | * |
| 560 | * @priv A pointer to struct lbtf_private structure |
| 561 | * |
| 562 | * Returns: 0 on success. |
| 563 | */ |
| 564 | int lbtf_execute_next_command(struct lbtf_private *priv) |
| 565 | { |
| 566 | struct cmd_ctrl_node *cmdnode = NULL; |
| 567 | struct cmd_header *cmd; |
| 568 | unsigned long flags; |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 569 | int ret = 0; |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 570 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 571 | /* Debug group is lbtf_deb_THREAD and not lbtf_deb_HOST, because the |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 572 | * only caller to us is lbtf_thread() and we get even when a |
| 573 | * data packet is received */ |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 574 | lbtf_deb_enter(LBTF_DEB_THREAD); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 575 | |
| 576 | spin_lock_irqsave(&priv->driver_lock, flags); |
| 577 | |
| 578 | if (priv->cur_cmd) { |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 579 | pr_alert("EXEC_NEXT_CMD: already processing command!\n"); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 580 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 581 | ret = -1; |
| 582 | goto done; |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 583 | } |
| 584 | |
| 585 | if (!list_empty(&priv->cmdpendingq)) { |
| 586 | cmdnode = list_first_entry(&priv->cmdpendingq, |
| 587 | struct cmd_ctrl_node, list); |
| 588 | } |
| 589 | |
| 590 | if (cmdnode) { |
| 591 | cmd = cmdnode->cmdbuf; |
| 592 | |
| 593 | list_del(&cmdnode->list); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 594 | lbtf_deb_host("EXEC_NEXT_CMD: sending command 0x%04x\n", |
| 595 | le16_to_cpu(cmd->command)); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 596 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
| 597 | lbtf_submit_command(priv, cmdnode); |
| 598 | } else |
| 599 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 600 | |
| 601 | ret = 0; |
| 602 | done: |
| 603 | lbtf_deb_leave(LBTF_DEB_THREAD); |
| 604 | return ret; |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 605 | } |
| 606 | |
| 607 | static struct cmd_ctrl_node *__lbtf_cmd_async(struct lbtf_private *priv, |
| 608 | uint16_t command, struct cmd_header *in_cmd, int in_cmd_size, |
| 609 | int (*callback)(struct lbtf_private *, unsigned long, |
| 610 | struct cmd_header *), |
| 611 | unsigned long callback_arg) |
| 612 | { |
| 613 | struct cmd_ctrl_node *cmdnode; |
| 614 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 615 | lbtf_deb_enter(LBTF_DEB_HOST); |
| 616 | |
| 617 | if (priv->surpriseremoved) { |
| 618 | lbtf_deb_host("PREP_CMD: card removed\n"); |
| 619 | cmdnode = ERR_PTR(-ENOENT); |
| 620 | goto done; |
| 621 | } |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 622 | |
| 623 | cmdnode = lbtf_get_cmd_ctrl_node(priv); |
| 624 | if (cmdnode == NULL) { |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 625 | lbtf_deb_host("PREP_CMD: cmdnode is NULL\n"); |
| 626 | |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 627 | /* Wake up main thread to execute next command */ |
| 628 | queue_work(lbtf_wq, &priv->cmd_work); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 629 | cmdnode = ERR_PTR(-ENOBUFS); |
| 630 | goto done; |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 631 | } |
| 632 | |
| 633 | cmdnode->callback = callback; |
| 634 | cmdnode->callback_arg = callback_arg; |
| 635 | |
| 636 | /* Copy the incoming command to the buffer */ |
| 637 | memcpy(cmdnode->cmdbuf, in_cmd, in_cmd_size); |
| 638 | |
| 639 | /* Set sequence number, clean result, move to buffer */ |
| 640 | priv->seqnum++; |
| 641 | cmdnode->cmdbuf->command = cpu_to_le16(command); |
| 642 | cmdnode->cmdbuf->size = cpu_to_le16(in_cmd_size); |
| 643 | cmdnode->cmdbuf->seqnum = cpu_to_le16(priv->seqnum); |
| 644 | cmdnode->cmdbuf->result = 0; |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 645 | |
| 646 | lbtf_deb_host("PREP_CMD: command 0x%04x\n", command); |
| 647 | |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 648 | cmdnode->cmdwaitqwoken = 0; |
| 649 | lbtf_queue_cmd(priv, cmdnode); |
| 650 | queue_work(lbtf_wq, &priv->cmd_work); |
| 651 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 652 | done: |
| 653 | lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %p", cmdnode); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 654 | return cmdnode; |
| 655 | } |
| 656 | |
| 657 | void lbtf_cmd_async(struct lbtf_private *priv, uint16_t command, |
| 658 | struct cmd_header *in_cmd, int in_cmd_size) |
| 659 | { |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 660 | lbtf_deb_enter(LBTF_DEB_CMD); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 661 | __lbtf_cmd_async(priv, command, in_cmd, in_cmd_size, NULL, 0); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 662 | lbtf_deb_leave(LBTF_DEB_CMD); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 663 | } |
| 664 | |
| 665 | int __lbtf_cmd(struct lbtf_private *priv, uint16_t command, |
| 666 | struct cmd_header *in_cmd, int in_cmd_size, |
| 667 | int (*callback)(struct lbtf_private *, |
| 668 | unsigned long, struct cmd_header *), |
| 669 | unsigned long callback_arg) |
| 670 | { |
| 671 | struct cmd_ctrl_node *cmdnode; |
| 672 | unsigned long flags; |
| 673 | int ret = 0; |
| 674 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 675 | lbtf_deb_enter(LBTF_DEB_HOST); |
| 676 | |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 677 | cmdnode = __lbtf_cmd_async(priv, command, in_cmd, in_cmd_size, |
| 678 | callback, callback_arg); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 679 | if (IS_ERR(cmdnode)) { |
| 680 | ret = PTR_ERR(cmdnode); |
| 681 | goto done; |
| 682 | } |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 683 | |
| 684 | might_sleep(); |
| 685 | ret = wait_event_interruptible(cmdnode->cmdwait_q, |
| 686 | cmdnode->cmdwaitqwoken); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 687 | if (ret) { |
| 688 | pr_info("PREP_CMD: command 0x%04x interrupted by signal: %d\n", |
| 689 | command, ret); |
| 690 | goto done; |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 691 | } |
| 692 | |
| 693 | spin_lock_irqsave(&priv->driver_lock, flags); |
| 694 | ret = cmdnode->result; |
| 695 | if (ret) |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 696 | pr_info("PREP_CMD: command 0x%04x failed: %d\n", |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 697 | command, ret); |
| 698 | |
| 699 | __lbtf_cleanup_and_insert_cmd(priv, cmdnode); |
| 700 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
| 701 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 702 | done: |
| 703 | lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %d", ret); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 704 | return ret; |
| 705 | } |
| 706 | EXPORT_SYMBOL_GPL(__lbtf_cmd); |
| 707 | |
| 708 | /* Call holding driver_lock */ |
| 709 | void lbtf_cmd_response_rx(struct lbtf_private *priv) |
| 710 | { |
| 711 | priv->cmd_response_rxed = 1; |
| 712 | queue_work(lbtf_wq, &priv->cmd_work); |
| 713 | } |
| 714 | EXPORT_SYMBOL_GPL(lbtf_cmd_response_rx); |
| 715 | |
| 716 | int lbtf_process_rx_command(struct lbtf_private *priv) |
| 717 | { |
| 718 | uint16_t respcmd, curcmd; |
| 719 | struct cmd_header *resp; |
| 720 | int ret = 0; |
| 721 | unsigned long flags; |
| 722 | uint16_t result; |
| 723 | |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 724 | lbtf_deb_enter(LBTF_DEB_CMD); |
| 725 | |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 726 | mutex_lock(&priv->lock); |
| 727 | spin_lock_irqsave(&priv->driver_lock, flags); |
| 728 | |
| 729 | if (!priv->cur_cmd) { |
| 730 | ret = -1; |
| 731 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
| 732 | goto done; |
| 733 | } |
| 734 | |
| 735 | resp = (void *)priv->cmd_resp_buff; |
| 736 | curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command); |
| 737 | respcmd = le16_to_cpu(resp->command); |
| 738 | result = le16_to_cpu(resp->result); |
| 739 | |
| 740 | if (net_ratelimit()) |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 741 | pr_info("libertastf: cmd response 0x%04x, seq %d, size %d\n", |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 742 | respcmd, le16_to_cpu(resp->seqnum), |
| 743 | le16_to_cpu(resp->size)); |
| 744 | |
| 745 | if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) { |
| 746 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
| 747 | ret = -1; |
| 748 | goto done; |
| 749 | } |
| 750 | if (respcmd != CMD_RET(curcmd)) { |
| 751 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
| 752 | ret = -1; |
| 753 | goto done; |
| 754 | } |
| 755 | |
| 756 | if (resp->result == cpu_to_le16(0x0004)) { |
| 757 | /* 0x0004 means -EAGAIN. Drop the response, let it time out |
| 758 | and be resubmitted */ |
| 759 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
| 760 | ret = -1; |
| 761 | goto done; |
| 762 | } |
| 763 | |
| 764 | /* Now we got response from FW, cancel the command timer */ |
| 765 | del_timer(&priv->command_timer); |
| 766 | priv->cmd_timed_out = 0; |
| 767 | if (priv->nr_retries) |
| 768 | priv->nr_retries = 0; |
| 769 | |
| 770 | /* If the command is not successful, cleanup and return failure */ |
| 771 | if ((result != 0 || !(respcmd & 0x8000))) { |
| 772 | /* |
| 773 | * Handling errors here |
| 774 | */ |
| 775 | switch (respcmd) { |
| 776 | case CMD_RET(CMD_GET_HW_SPEC): |
| 777 | case CMD_RET(CMD_802_11_RESET): |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 778 | pr_info("libertastf: reset failed\n"); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 779 | break; |
| 780 | |
| 781 | } |
| 782 | lbtf_complete_command(priv, priv->cur_cmd, result); |
| 783 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
| 784 | |
| 785 | ret = -1; |
| 786 | goto done; |
| 787 | } |
| 788 | |
| 789 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
| 790 | |
| 791 | if (priv->cur_cmd && priv->cur_cmd->callback) { |
| 792 | ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg, |
| 793 | resp); |
| 794 | } |
| 795 | spin_lock_irqsave(&priv->driver_lock, flags); |
| 796 | |
| 797 | if (priv->cur_cmd) { |
| 798 | /* Clean up and Put current command back to cmdfreeq */ |
| 799 | lbtf_complete_command(priv, priv->cur_cmd, result); |
| 800 | } |
| 801 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
| 802 | |
| 803 | done: |
| 804 | mutex_unlock(&priv->lock); |
Steve deRosier | e9bd5bc | 2010-04-25 14:40:46 -0700 | [diff] [blame] | 805 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret); |
Luis Carlos Cobo | 691cdb4 | 2008-08-14 10:41:01 -0700 | [diff] [blame] | 806 | return ret; |
| 807 | } |