| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Jouni Malinen | 13999 | 93.95% | 6 | 6.12% |
| Linus Torvalds (pre-git) | 172 | 1.15% | 25 | 25.51% |
| Arnaldo Carvalho de Melo | 110 | 0.74% | 8 | 8.16% |
| Américo Wang | 62 | 0.42% | 2 | 2.04% |
| Tim Gardner | 54 | 0.36% | 1 | 1.02% |
| Al Viro | 53 | 0.36% | 4 | 4.08% |
| Kees Cook | 49 | 0.33% | 3 | 3.06% |
| Allen Pais | 48 | 0.32% | 1 | 1.02% |
| David Howells | 47 | 0.32% | 2 | 2.04% |
| Tejun Heo | 44 | 0.30% | 2 | 2.04% |
| Dan J Williams | 41 | 0.28% | 1 | 1.02% |
| Pavel Roskin | 39 | 0.26% | 5 | 5.10% |
| Arnd Bergmann | 19 | 0.13% | 2 | 2.04% |
| John W. Linville | 18 | 0.12% | 2 | 2.04% |
| Jakub Kiciński | 17 | 0.11% | 1 | 1.02% |
| Linus Torvalds | 15 | 0.10% | 2 | 2.04% |
| Matthias Kaehlcke | 14 | 0.09% | 1 | 1.02% |
| Stephen Hemminger | 13 | 0.09% | 3 | 3.06% |
| Dave Hansen | 12 | 0.08% | 1 | 1.02% |
| Yue haibing | 11 | 0.07% | 1 | 1.02% |
| Elena Reshetova | 6 | 0.04% | 1 | 1.02% |
| Johannes Berg | 6 | 0.04% | 2 | 2.04% |
| Christoph Hellwig | 6 | 0.04% | 2 | 2.04% |
| Javier Achirica | 5 | 0.03% | 1 | 1.02% |
| Mathieu Chouquet-Stringer | 5 | 0.03% | 1 | 1.02% |
| Alexey Dobriyan | 4 | 0.03% | 1 | 1.02% |
| Joe Perches | 4 | 0.03% | 1 | 1.02% |
| Florian Westphal | 3 | 0.02% | 1 | 1.02% |
| Yan Burman | 3 | 0.02% | 1 | 1.02% |
| Yoann Padioleau | 3 | 0.02% | 1 | 1.02% |
| Daniel Ritz | 3 | 0.02% | 1 | 1.02% |
| Ding Tianhong | 2 | 0.01% | 1 | 1.02% |
| Masanari Iida | 2 | 0.01% | 1 | 1.02% |
| Vaibhav Gupta | 2 | 0.01% | 1 | 1.02% |
| David S. Miller | 2 | 0.01% | 2 | 2.04% |
| Thomas Gleixner | 2 | 0.01% | 1 | 1.02% |
| Ingo Molnar | 1 | 0.01% | 1 | 1.02% |
| Thomas Weber | 1 | 0.01% | 1 | 1.02% |
| Daniel Drake | 1 | 0.01% | 1 | 1.02% |
| Justin P. Mattock | 1 | 0.01% | 1 | 1.02% |
| Adrian Bunk | 1 | 0.01% | 1 | 1.02% |
| Björn Mork | 1 | 0.01% | 1 | 1.02% |
| Total | 14901 | 98 |
// SPDX-License-Identifier: GPL-2.0-only /* * Host AP (software wireless LAN access point) driver for * Intersil Prism2/2.5/3. * * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen * <j@w1.fi> * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi> * * FIX: * - there is currently no way of associating TX packets to correct wds device * when TX Exc/OK event occurs, so all tx_packets and some * tx_errors/tx_dropped are added to the main netdevice; using sw_support * field in txdesc might be used to fix this (using Alloc event to increment * tx_packets would need some further info in txfid table) * * Buffer Access Path (BAP) usage: * Prism2 cards have two separate BAPs for accessing the card memory. These * should allow concurrent access to two different frames and the driver * previously used BAP0 for sending data and BAP1 for receiving data. * However, there seems to be number of issues with concurrent access and at * least one know hardware bug in using BAP0 and BAP1 concurrently with PCI * Prism2.5. Therefore, the driver now only uses BAP0 for moving data between * host and card memories. BAP0 accesses are protected with local->baplock * (spin_lock_bh) to prevent concurrent use. */ #include <asm/delay.h> #include <linux/uaccess.h> #include <linux/slab.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/if_arp.h> #include <linux/delay.h> #include <linux/random.h> #include <linux/wait.h> #include <linux/sched/signal.h> #include <linux/rtnetlink.h> #include <linux/wireless.h> #include <net/iw_handler.h> #include <net/lib80211.h> #include <asm/irq.h> #include "hostap_80211.h" #include "hostap.h" #include "hostap_ap.h" /* #define final_version */ static int mtu = 1500; module_param(mtu, int, 0444); MODULE_PARM_DESC(mtu, "Maximum transfer unit"); static int channel[MAX_PARM_DEVICES] = { 3, DEF_INTS }; module_param_array(channel, int, NULL, 0444); MODULE_PARM_DESC(channel, "Initial channel"); static char essid[33] = "test"; module_param_string(essid, essid, sizeof(essid), 0444); MODULE_PARM_DESC(essid, "Host AP's ESSID"); static int iw_mode[MAX_PARM_DEVICES] = { IW_MODE_MASTER, DEF_INTS }; module_param_array(iw_mode, int, NULL, 0444); MODULE_PARM_DESC(iw_mode, "Initial operation mode"); static int beacon_int[MAX_PARM_DEVICES] = { 100, DEF_INTS }; module_param_array(beacon_int, int, NULL, 0444); MODULE_PARM_DESC(beacon_int, "Beacon interval (1 = 1024 usec)"); static int dtim_period[MAX_PARM_DEVICES] = { 1, DEF_INTS }; module_param_array(dtim_period, int, NULL, 0444); MODULE_PARM_DESC(dtim_period, "DTIM period"); static char dev_template[16] = "wlan%d"; module_param_string(dev_template, dev_template, sizeof(dev_template), 0444); MODULE_PARM_DESC(dev_template, "Prefix for network device name (default: " "wlan%d)"); #ifdef final_version #define EXTRA_EVENTS_WTERR 0 #else /* check WTERR events (Wait Time-out) in development versions */ #define EXTRA_EVENTS_WTERR HFA384X_EV_WTERR #endif /* Events that will be using BAP0 */ #define HFA384X_BAP0_EVENTS \ (HFA384X_EV_TXEXC | HFA384X_EV_RX | HFA384X_EV_INFO | HFA384X_EV_TX) /* event mask, i.e., events that will result in an interrupt */ #define HFA384X_EVENT_MASK \ (HFA384X_BAP0_EVENTS | HFA384X_EV_ALLOC | HFA384X_EV_INFDROP | \ HFA384X_EV_CMD | HFA384X_EV_TICK | \ EXTRA_EVENTS_WTERR) /* Default TX control flags: use 802.11 headers and request interrupt for * failed transmits. Frames that request ACK callback, will add * _TX_OK flag and _ALT_RTRY flag may be used to select different retry policy. */ #define HFA384X_TX_CTRL_FLAGS \ (HFA384X_TX_CTRL_802_11 | HFA384X_TX_CTRL_TX_EX) /* ca. 1 usec */ #define HFA384X_CMD_BUSY_TIMEOUT 5000 #define HFA384X_BAP_BUSY_TIMEOUT 50000 /* ca. 10 usec */ #define HFA384X_CMD_COMPL_TIMEOUT 20000 #define HFA384X_DL_COMPL_TIMEOUT 1000000 /* Wait times for initialization; yield to other processes to avoid busy * waiting for long time. */ #define HFA384X_INIT_TIMEOUT (HZ / 2) /* 500 ms */ #define HFA384X_ALLOC_COMPL_TIMEOUT (HZ / 20) /* 50 ms */ static void prism2_hw_reset(struct net_device *dev); static void prism2_check_sta_fw_version(local_info_t *local); #ifdef PRISM2_DOWNLOAD_SUPPORT /* hostap_download.c */ static const struct proc_ops prism2_download_aux_dump_proc_ops; static u8 * prism2_read_pda(struct net_device *dev); static int prism2_download(local_info_t *local, struct prism2_download_param *param); static void prism2_download_free_data(struct prism2_download_data *dl); static int prism2_download_volatile(local_info_t *local, struct prism2_download_data *param); static int prism2_download_genesis(local_info_t *local, struct prism2_download_data *param); static int prism2_get_ram_size(local_info_t *local); #endif /* PRISM2_DOWNLOAD_SUPPORT */ #ifndef final_version /* magic value written to SWSUPPORT0 reg. for detecting whether card is still * present */ #define HFA384X_MAGIC 0x8A32 #endif static void hfa384x_read_regs(struct net_device *dev, struct hfa384x_regs *regs) { regs->cmd = HFA384X_INW(HFA384X_CMD_OFF); regs->evstat = HFA384X_INW(HFA384X_EVSTAT_OFF); regs->offset0 = HFA384X_INW(HFA384X_OFFSET0_OFF); regs->offset1 = HFA384X_INW(HFA384X_OFFSET1_OFF); regs->swsupport0 = HFA384X_INW(HFA384X_SWSUPPORT0_OFF); } /** * __hostap_cmd_queue_free - Free Prism2 command queue entry (private) * @local: pointer to private Host AP driver data * @entry: Prism2 command queue entry to be freed * @del_req: request the entry to be removed * * Internal helper function for freeing Prism2 command queue entries. * Caller must have acquired local->cmdlock before calling this function. */ static inline void __hostap_cmd_queue_free(local_info_t *local, struct hostap_cmd_queue *entry, int del_req) { if (del_req) { entry->del_req = 1; if (!list_empty(&entry->list)) { list_del_init(&entry->list); local->cmd_queue_len--; } } if (refcount_dec_and_test(&entry->usecnt) && entry->del_req) kfree(entry); } /** * hostap_cmd_queue_free - Free Prism2 command queue entry * @local: pointer to private Host AP driver data * @entry: Prism2 command queue entry to be freed * @del_req: request the entry to be removed * * Free a Prism2 command queue entry. */ static inline void hostap_cmd_queue_free(local_info_t *local, struct hostap_cmd_queue *entry, int del_req) { unsigned long flags; spin_lock_irqsave(&local->cmdlock, flags); __hostap_cmd_queue_free(local, entry, del_req); spin_unlock_irqrestore(&local->cmdlock, flags); } /** * prism2_clear_cmd_queue - Free all pending Prism2 command queue entries * @local: pointer to private Host AP driver data */ static void prism2_clear_cmd_queue(local_info_t *local) { struct list_head *ptr, *n; unsigned long flags; struct hostap_cmd_queue *entry; spin_lock_irqsave(&local->cmdlock, flags); list_for_each_safe(ptr, n, &local->cmd_queue) { entry = list_entry(ptr, struct hostap_cmd_queue, list); refcount_inc(&entry->usecnt); printk(KERN_DEBUG "%s: removed pending cmd_queue entry " "(type=%d, cmd=0x%04x, param0=0x%04x)\n", local->dev->name, entry->type, entry->cmd, entry->param0); __hostap_cmd_queue_free(local, entry, 1); } if (local->cmd_queue_len) { /* This should not happen; print debug message and clear * queue length. */ printk(KERN_DEBUG "%s: cmd_queue_len (%d) not zero after " "flush\n", local->dev->name, local->cmd_queue_len); local->cmd_queue_len = 0; } spin_unlock_irqrestore(&local->cmdlock, flags); } /** * hfa384x_cmd_issue - Issue a Prism2 command to the hardware * @dev: pointer to net_device * @entry: Prism2 command queue entry to be issued */ static int hfa384x_cmd_issue(struct net_device *dev, struct hostap_cmd_queue *entry) { struct hostap_interface *iface; local_info_t *local; int tries; u16 reg; unsigned long flags; iface = netdev_priv(dev); local = iface->local; if (local->func->card_present && !local->func->card_present(local)) return -ENODEV; if (entry->issued) { printk(KERN_DEBUG "%s: driver bug - re-issuing command @%p\n", dev->name, entry); } /* wait until busy bit is clear; this should always be clear since the * commands are serialized */ tries = HFA384X_CMD_BUSY_TIMEOUT; while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) { tries--; udelay(1); } #ifndef final_version if (tries != HFA384X_CMD_BUSY_TIMEOUT) { prism2_io_debug_error(dev, 1); printk(KERN_DEBUG "%s: hfa384x_cmd_issue: cmd reg was busy " "for %d usec\n", dev->name, HFA384X_CMD_BUSY_TIMEOUT - tries); } #endif if (tries == 0) { reg = HFA384X_INW(HFA384X_CMD_OFF); prism2_io_debug_error(dev, 2); printk(KERN_DEBUG "%s: hfa384x_cmd_issue - timeout - " "reg=0x%04x\n", dev->name, reg); return -ETIMEDOUT; } /* write command */ spin_lock_irqsave(&local->cmdlock, flags); HFA384X_OUTW(entry->param0, HFA384X_PARAM0_OFF); HFA384X_OUTW(entry->param1, HFA384X_PARAM1_OFF); HFA384X_OUTW(entry->cmd, HFA384X_CMD_OFF); entry->issued = 1; spin_unlock_irqrestore(&local->cmdlock, flags); return 0; } /** * hfa384x_cmd - Issue a Prism2 command and wait (sleep) for completion * @dev: pointer to net_device * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) * @param0: value for Param0 register * @param1: value for Param1 register (pointer; %NULL if not used) * @resp0: pointer for Resp0 data or %NULL if Resp0 is not needed * * Issue given command (possibly after waiting in command queue) and sleep * until the command is completed (or timed out or interrupted). This can be * called only from user process context. */ static int hfa384x_cmd(struct net_device *dev, u16 cmd, u16 param0, u16 *param1, u16 *resp0) { struct hostap_interface *iface; local_info_t *local; int err, res, issue, issued = 0; unsigned long flags; struct hostap_cmd_queue *entry; DECLARE_WAITQUEUE(wait, current); iface = netdev_priv(dev); local = iface->local; if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN) { printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n", dev->name); return -1; } if (signal_pending(current)) return -EINTR; entry = kzalloc(sizeof(*entry), GFP_ATOMIC); if (entry == NULL) return -ENOMEM; refcount_set(&entry->usecnt, 1); entry->type = CMD_SLEEP; entry->cmd = cmd; entry->param0 = param0; if (param1) entry->param1 = *param1; init_waitqueue_head(&entry->compl); /* prepare to wait for command completion event, but do not sleep yet */ add_wait_queue(&entry->compl, &wait); set_current_state(TASK_INTERRUPTIBLE); spin_lock_irqsave(&local->cmdlock, flags); issue = list_empty(&local->cmd_queue); if (issue) entry->issuing = 1; list_add_tail(&entry->list, &local->cmd_queue); local->cmd_queue_len++; spin_unlock_irqrestore(&local->cmdlock, flags); err = 0; if (!issue) goto wait_completion; if (signal_pending(current)) err = -EINTR; if (!err) { if (hfa384x_cmd_issue(dev, entry)) err = -ETIMEDOUT; else issued = 1; } wait_completion: if (!err && entry->type != CMD_COMPLETED) { /* sleep until command is completed or timed out */ res = schedule_timeout(2 * HZ); } else res = -1; if (!err && signal_pending(current)) err = -EINTR; if (err && issued) { /* the command was issued, so a CmdCompl event should occur * soon; however, there's a pending signal and * schedule_timeout() would be interrupted; wait a short period * of time to avoid removing entry from the list before * CmdCompl event */ udelay(300); } set_current_state(TASK_RUNNING); remove_wait_queue(&entry->compl, &wait); /* If entry->list is still in the list, it must be removed * first and in this case prism2_cmd_ev() does not yet have * local reference to it, and the data can be kfree()'d * here. If the command completion event is still generated, * it will be assigned to next (possibly) pending command, but * the driver will reset the card anyway due to timeout * * If the entry is not in the list prism2_cmd_ev() has a local * reference to it, but keeps cmdlock as long as the data is * needed, so the data can be kfree()'d here. */ /* FIX: if the entry->list is in the list, it has not been completed * yet, so removing it here is somewhat wrong.. this could cause * references to freed memory and next list_del() causing NULL pointer * dereference.. it would probably be better to leave the entry in the * list and the list should be emptied during hw reset */ spin_lock_irqsave(&local->cmdlock, flags); if (!list_empty(&entry->list)) { printk(KERN_DEBUG "%s: hfa384x_cmd: entry still in list? " "(entry=%p, type=%d, res=%d)\n", dev->name, entry, entry->type, res); list_del_init(&entry->list); local->cmd_queue_len--; } spin_unlock_irqrestore(&local->cmdlock, flags); if (err) { printk(KERN_DEBUG "%s: hfa384x_cmd: interrupted; err=%d\n", dev->name, err); res = err; goto done; } if (entry->type != CMD_COMPLETED) { u16 reg = HFA384X_INW(HFA384X_EVSTAT_OFF); printk(KERN_DEBUG "%s: hfa384x_cmd: command was not " "completed (res=%d, entry=%p, type=%d, cmd=0x%04x, " "param0=0x%04x, EVSTAT=%04x INTEN=%04x)\n", dev->name, res, entry, entry->type, entry->cmd, entry->param0, reg, HFA384X_INW(HFA384X_INTEN_OFF)); if (reg & HFA384X_EV_CMD) { /* Command completion event is pending, but the * interrupt was not delivered - probably an issue * with pcmcia-cs configuration. */ printk(KERN_WARNING "%s: interrupt delivery does not " "seem to work\n", dev->name); } prism2_io_debug_error(dev, 3); res = -ETIMEDOUT; goto done; } if (resp0 != NULL) *resp0 = entry->resp0; #ifndef final_version if (entry->res) { printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x, " "resp0=0x%04x\n", dev->name, cmd, entry->res, entry->resp0); } #endif /* final_version */ res = entry->res; done: hostap_cmd_queue_free(local, entry, 1); return res; } /** * hfa384x_cmd_callback - Issue a Prism2 command; callback when completed * @dev: pointer to net_device * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) * @param0: value for Param0 register * @callback: command completion callback function (%NULL = no callback) * @context: context data to be given to the callback function * * Issue given command (possibly after waiting in command queue) and use * callback function to indicate command completion. This can be called both * from user and interrupt context. The callback function will be called in * hardware IRQ context. It can be %NULL, when no function is called when * command is completed. */ static int hfa384x_cmd_callback(struct net_device *dev, u16 cmd, u16 param0, void (*callback)(struct net_device *dev, long context, u16 resp0, u16 status), long context) { struct hostap_interface *iface; local_info_t *local; int issue, ret; unsigned long flags; struct hostap_cmd_queue *entry; iface = netdev_priv(dev); local = iface->local; if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN + 2) { printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n", dev->name); return -1; } entry = kzalloc(sizeof(*entry), GFP_ATOMIC); if (entry == NULL) return -ENOMEM; refcount_set(&entry->usecnt, 1); entry->type = CMD_CALLBACK; entry->cmd = cmd; entry->param0 = param0; entry->callback = callback; entry->context = context; spin_lock_irqsave(&local->cmdlock, flags); issue = list_empty(&local->cmd_queue); if (issue) entry->issuing = 1; list_add_tail(&entry->list, &local->cmd_queue); local->cmd_queue_len++; spin_unlock_irqrestore(&local->cmdlock, flags); if (issue && hfa384x_cmd_issue(dev, entry)) ret = -ETIMEDOUT; else ret = 0; hostap_cmd_queue_free(local, entry, ret); return ret; } /** * __hfa384x_cmd_no_wait - Issue a Prism2 command (private) * @dev: pointer to net_device * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) * @param0: value for Param0 register * @io_debug_num: I/O debug error number * * Shared helper function for hfa384x_cmd_wait() and hfa384x_cmd_no_wait(). */ static int __hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, u16 param0, int io_debug_num) { int tries; u16 reg; /* wait until busy bit is clear; this should always be clear since the * commands are serialized */ tries = HFA384X_CMD_BUSY_TIMEOUT; while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) { tries--; udelay(1); } if (tries == 0) { reg = HFA384X_INW(HFA384X_CMD_OFF); prism2_io_debug_error(dev, io_debug_num); printk(KERN_DEBUG "%s: __hfa384x_cmd_no_wait(%d) - timeout - " "reg=0x%04x\n", dev->name, io_debug_num, reg); return -ETIMEDOUT; } /* write command */ HFA384X_OUTW(param0, HFA384X_PARAM0_OFF); HFA384X_OUTW(cmd, HFA384X_CMD_OFF); return 0; } /** * hfa384x_cmd_wait - Issue a Prism2 command and busy wait for completion * @dev: pointer to net_device * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) * @param0: value for Param0 register */ static int hfa384x_cmd_wait(struct net_device *dev, u16 cmd, u16 param0) { int res, tries; u16 reg; res = __hfa384x_cmd_no_wait(dev, cmd, param0, 4); if (res) return res; /* wait for command completion */ if ((cmd & HFA384X_CMDCODE_MASK) == HFA384X_CMDCODE_DOWNLOAD) tries = HFA384X_DL_COMPL_TIMEOUT; else tries = HFA384X_CMD_COMPL_TIMEOUT; while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) && tries > 0) { tries--; udelay(10); } if (tries == 0) { reg = HFA384X_INW(HFA384X_EVSTAT_OFF); prism2_io_debug_error(dev, 5); printk(KERN_DEBUG "%s: hfa384x_cmd_wait - timeout2 - " "reg=0x%04x\n", dev->name, reg); return -ETIMEDOUT; } res = (HFA384X_INW(HFA384X_STATUS_OFF) & (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | BIT(9) | BIT(8))) >> 8; #ifndef final_version if (res) { printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x\n", dev->name, cmd, res); } #endif HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); return res; } /** * hfa384x_cmd_no_wait - Issue a Prism2 command; do not wait for completion * @dev: pointer to net_device * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) * @param0: value for Param0 register */ static inline int hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, u16 param0) { return __hfa384x_cmd_no_wait(dev, cmd, param0, 6); } /** * prism2_cmd_ev - Prism2 command completion event handler * @dev: pointer to net_device * * Interrupt handler for command completion events. Called by the main * interrupt handler in hardware IRQ context. Read Resp0 and status registers * from the hardware and ACK the event. Depending on the issued command type * either wake up the sleeping process that is waiting for command completion * or call the callback function. Issue the next command, if one is pending. */ static void prism2_cmd_ev(struct net_device *dev) { struct hostap_interface *iface; local_info_t *local; struct hostap_cmd_queue *entry = NULL; iface = netdev_priv(dev); local = iface->local; spin_lock(&local->cmdlock); if (!list_empty(&local->cmd_queue)) { entry = list_entry(local->cmd_queue.next, struct hostap_cmd_queue, list); refcount_inc(&entry->usecnt); list_del_init(&entry->list); local->cmd_queue_len--; if (!entry->issued) { printk(KERN_DEBUG "%s: Command completion event, but " "cmd not issued\n", dev->name); __hostap_cmd_queue_free(local, entry, 1); entry = NULL; } } spin_unlock(&local->cmdlock); if (!entry) { HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); printk(KERN_DEBUG "%s: Command completion event, but no " "pending commands\n", dev->name); return; } entry->resp0 = HFA384X_INW(HFA384X_RESP0_OFF); entry->res = (HFA384X_INW(HFA384X_STATUS_OFF) & (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | BIT(9) | BIT(8))) >> 8; HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); /* TODO: rest of the CmdEv handling could be moved to tasklet */ if (entry->type == CMD_SLEEP) { entry->type = CMD_COMPLETED; wake_up_interruptible(&entry->compl); } else if (entry->type == CMD_CALLBACK) { if (entry->callback) entry->callback(dev, entry->context, entry->resp0, entry->res); } else { printk(KERN_DEBUG "%s: Invalid command completion type %d\n", dev->name, entry->type); } hostap_cmd_queue_free(local, entry, 1); /* issue next command, if pending */ entry = NULL; spin_lock(&local->cmdlock); if (!list_empty(&local->cmd_queue)) { entry = list_entry(local->cmd_queue.next, struct hostap_cmd_queue, list); if (entry->issuing) { /* hfa384x_cmd() has already started issuing this * command, so do not start here */ entry = NULL; } if (entry) refcount_inc(&entry->usecnt); } spin_unlock(&local->cmdlock); if (entry) { /* issue next command; if command issuing fails, remove the * entry from cmd_queue */ int res = hfa384x_cmd_issue(dev, entry); spin_lock(&local->cmdlock); __hostap_cmd_queue_free(local, entry, res); spin_unlock(&local->cmdlock); } } static int hfa384x_wait_offset(struct net_device *dev, u16 o_off) { int tries = HFA384X_BAP_BUSY_TIMEOUT; int res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY; while (res && tries > 0) { tries--; udelay(1); res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY; } return res; } /* Offset must be even */ static int hfa384x_setup_bap(struct net_device *dev, u16 bap, u16 id, int offset) { u16 o_off, s_off; int ret = 0; if (offset % 2 || bap > 1) return -EINVAL; if (bap == BAP1) { o_off = HFA384X_OFFSET1_OFF; s_off = HFA384X_SELECT1_OFF; } else { o_off = HFA384X_OFFSET0_OFF; s_off = HFA384X_SELECT0_OFF; } if (hfa384x_wait_offset(dev, o_off)) { prism2_io_debug_error(dev, 7); printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout before\n", dev->name); ret = -ETIMEDOUT; goto out; } HFA384X_OUTW(id, s_off); HFA384X_OUTW(offset, o_off); if (hfa384x_wait_offset(dev, o_off)) { prism2_io_debug_error(dev, 8); printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout after\n", dev->name); ret = -ETIMEDOUT; goto out; } #ifndef final_version if (HFA384X_INW(o_off) & HFA384X_OFFSET_ERR) { prism2_io_debug_error(dev, 9); printk(KERN_DEBUG "%s: hfa384x_setup_bap - offset error " "(%d,0x04%x,%d); reg=0x%04x\n", dev->name, bap, id, offset, HFA384X_INW(o_off)); ret = -EINVAL; } #endif out: return ret; } static int hfa384x_get_rid(struct net_device *dev, u16 rid, void *buf, int len, int exact_len) { struct hostap_interface *iface; local_info_t *local; int res, rlen = 0; struct hfa384x_rid_hdr rec; iface = netdev_priv(dev); local = iface->local; if (local->no_pri) { printk(KERN_DEBUG "%s: cannot get RID %04x (len=%d) - no PRI " "f/w\n", dev->name, rid, len); return -ENOTTY; /* Well.. not really correct, but return * something unique enough.. */ } if ((local->func->card_present && !local->func->card_present(local)) || local->hw_downloading) return -ENODEV; res = mutex_lock_interruptible(&local->rid_bap_mtx); if (res) return res; res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS, rid, NULL, NULL); if (res) { printk(KERN_DEBUG "%s: hfa384x_get_rid: CMDCODE_ACCESS failed " "(res=%d, rid=%04x, len=%d)\n", dev->name, res, rid, len); mutex_unlock(&local->rid_bap_mtx); return res; } spin_lock_bh(&local->baplock); res = hfa384x_setup_bap(dev, BAP0, rid, 0); if (res) goto unlock; res = hfa384x_from_bap(dev, BAP0, &rec, sizeof(rec)); if (res) goto unlock; if (le16_to_cpu(rec.len) == 0) { /* RID not available */ res = -ENODATA; goto unlock; } rlen = (le16_to_cpu(rec.len) - 1) * 2; if (exact_len && rlen != len) { printk(KERN_DEBUG "%s: hfa384x_get_rid - RID len mismatch: " "rid=0x%04x, len=%d (expected %d)\n", dev->name, rid, rlen, len); res = -ENODATA; } res = hfa384x_from_bap(dev, BAP0, buf, len); unlock: spin_unlock_bh(&local->baplock); mutex_unlock(&local->rid_bap_mtx); if (res) { if (res != -ENODATA) printk(KERN_DEBUG "%s: hfa384x_get_rid (rid=%04x, " "len=%d) - failed - res=%d\n", dev->name, rid, len, res); if (res == -ETIMEDOUT) prism2_hw_reset(dev); return res; } return rlen; } static int hfa384x_set_rid(struct net_device *dev, u16 rid, void *buf, int len) { struct hostap_interface *iface; local_info_t *local; struct hfa384x_rid_hdr rec; int res; iface = netdev_priv(dev); local = iface->local; if (local->no_pri) { printk(KERN_DEBUG "%s: cannot set RID %04x (len=%d) - no PRI " "f/w\n", dev->name, rid, len); return -ENOTTY; /* Well.. not really correct, but return * something unique enough.. */ } if ((local->func->card_present && !local->func->card_present(local)) || local->hw_downloading) return -ENODEV; rec.rid = cpu_to_le16(rid); /* RID len in words and +1 for rec.rid */ rec.len = cpu_to_le16(len / 2 + len % 2 + 1); res = mutex_lock_interruptible(&local->rid_bap_mtx); if (res) return res; spin_lock_bh(&local->baplock); res = hfa384x_setup_bap(dev, BAP0, rid, 0); if (!res) res = hfa384x_to_bap(dev, BAP0, &rec, sizeof(rec)); if (!res) res = hfa384x_to_bap(dev, BAP0, buf, len); spin_unlock_bh(&local->baplock); if (res) { printk(KERN_DEBUG "%s: hfa384x_set_rid (rid=%04x, len=%d) - " "failed - res=%d\n", dev->name, rid, len, res); mutex_unlock(&local->rid_bap_mtx); return res; } res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS_WRITE, rid, NULL, NULL); mutex_unlock(&local->rid_bap_mtx); if (res) { printk(KERN_DEBUG "%s: hfa384x_set_rid: CMDCODE_ACCESS_WRITE " "failed (res=%d, rid=%04x, len=%d)\n", dev->name, res, rid, len); if (res == -ETIMEDOUT) prism2_hw_reset(dev); } return res; } static void hfa384x_disable_interrupts(struct net_device *dev) { /* disable interrupts and clear event status */ HFA384X_OUTW(0, HFA384X_INTEN_OFF); HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); } static void hfa384x_enable_interrupts(struct net_device *dev) { /* ack pending events and enable interrupts from selected events */ HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF); } static void hfa384x_events_no_bap0(struct net_device *dev) { HFA384X_OUTW(HFA384X_EVENT_MASK & ~HFA384X_BAP0_EVENTS, HFA384X_INTEN_OFF); } static void hfa384x_events_all(struct net_device *dev) { HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF); } static void hfa384x_events_only_cmd(struct net_device *dev) { HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_INTEN_OFF); } static u16 hfa384x_allocate_fid(struct net_device *dev, int len) { u16 fid; unsigned long delay; /* FIX: this could be replace with hfa384x_cmd() if the Alloc event * below would be handled like CmdCompl event (sleep here, wake up from * interrupt handler */ if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_ALLOC, len)) { printk(KERN_DEBUG "%s: cannot allocate fid, len=%d\n", dev->name, len); return 0xffff; } delay = jiffies + HFA384X_ALLOC_COMPL_TIMEOUT; while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC) && time_before(jiffies, delay)) yield(); if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC)) { printk("%s: fid allocate, len=%d - timeout\n", dev->name, len); return 0xffff; } fid = HFA384X_INW(HFA384X_ALLOCFID_OFF); HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF); return fid; } static int prism2_reset_port(struct net_device *dev) { struct hostap_interface *iface; local_info_t *local; int res; iface = netdev_priv(dev); local = iface->local; if (!local->dev_enabled) return 0; res = hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, NULL, NULL); if (res) printk(KERN_DEBUG "%s: reset port failed to disable port\n", dev->name); else { res = hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, NULL, NULL); if (res) printk(KERN_DEBUG "%s: reset port failed to enable " "port\n", dev->name); } /* It looks like at least some STA firmware versions reset * fragmentation threshold back to 2346 after enable command. Restore * the configured value, if it differs from this default. */ if (local->fragm_threshold != 2346 && hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, local->fragm_threshold)) { printk(KERN_DEBUG "%s: failed to restore fragmentation " "threshold (%d) after Port0 enable\n", dev->name, local->fragm_threshold); } /* Some firmwares lose antenna selection settings on reset */ (void) hostap_set_antsel(local); return res; } static int prism2_get_version_info(struct net_device *dev, u16 rid, const char *txt) { struct hfa384x_comp_ident comp; struct hostap_interface *iface; local_info_t *local; iface = netdev_priv(dev); local = iface->local; if (local->no_pri) { /* PRI f/w not yet available - cannot read RIDs */ return -1; } if (hfa384x_get_rid(dev, rid, &comp, sizeof(comp), 1) < 0) { printk(KERN_DEBUG "Could not get RID for component %s\n", txt); return -1; } printk(KERN_INFO "%s: %s: id=0x%02x v%d.%d.%d\n", dev->name, txt, __le16_to_cpu(comp.id), __le16_to_cpu(comp.major), __le16_to_cpu(comp.minor), __le16_to_cpu(comp.variant)); return 0; } static int prism2_setup_rids(struct net_device *dev) { struct hostap_interface *iface; local_info_t *local; __le16 tmp; int ret = 0; iface = netdev_priv(dev); local = iface->local; hostap_set_word(dev, HFA384X_RID_TICKTIME, 2000); if (!local->fw_ap) { u16 tmp1 = hostap_get_porttype(local); ret = hostap_set_word(dev, HFA384X_RID_CNFPORTTYPE, tmp1); if (ret) { printk("%s: Port type setting to %d failed\n", dev->name, tmp1); goto fail; } } /* Setting SSID to empty string seems to kill the card in Host AP mode */ if (local->iw_mode != IW_MODE_MASTER || local->essid[0] != '\0') { ret = hostap_set_string(dev, HFA384X_RID_CNFOWNSSID, local->essid); if (ret) { printk("%s: AP own SSID setting failed\n", dev->name); goto fail; } } ret = hostap_set_word(dev, HFA384X_RID_CNFMAXDATALEN, PRISM2_DATA_MAXLEN); if (ret) { printk("%s: MAC data length setting to %d failed\n", dev->name, PRISM2_DATA_MAXLEN); goto fail; } if (hfa384x_get_rid(dev, HFA384X_RID_CHANNELLIST, &tmp, 2, 1) < 0) { printk("%s: Channel list read failed\n", dev->name); ret = -EINVAL; goto fail; } local->channel_mask = le16_to_cpu(tmp); if (local->channel < 1 || local->channel > 14 || !(local->channel_mask & (1 << (local->channel - 1)))) { printk(KERN_WARNING "%s: Channel setting out of range " "(%d)!\n", dev->name, local->channel); ret = -EBUSY; goto fail; } ret = hostap_set_word(dev, HFA384X_RID_CNFOWNCHANNEL, local->channel); if (ret) { printk("%s: Channel setting to %d failed\n", dev->name, local->channel); goto fail; } ret = hostap_set_word(dev, HFA384X_RID_CNFBEACONINT, local->beacon_int); if (ret) { printk("%s: Beacon interval setting to %d failed\n", dev->name, local->beacon_int); /* this may fail with Symbol/Lucent firmware */ if (ret == -ETIMEDOUT) goto fail; } ret = hostap_set_word(dev, HFA384X_RID_CNFOWNDTIMPERIOD, local->dtim_period); if (ret) { printk("%s: DTIM period setting to %d failed\n", dev->name, local->dtim_period); /* this may fail with Symbol/Lucent firmware */ if (ret == -ETIMEDOUT) goto fail; } ret = hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE, local->is_promisc); if (ret) printk(KERN_INFO "%s: Setting promiscuous mode (%d) failed\n", dev->name, local->is_promisc); if (!local->fw_ap) { ret = hostap_set_string(dev, HFA384X_RID_CNFDESIREDSSID, local->essid); if (ret) { printk("%s: Desired SSID setting failed\n", dev->name); goto fail; } } /* Setup TXRateControl, defaults to allow use of 1, 2, 5.5, and * 11 Mbps in automatic TX rate fallback and 1 and 2 Mbps as basic * rates */ if (local->tx_rate_control == 0) { local->tx_rate_control = HFA384X_RATES_1MBPS | HFA384X_RATES_2MBPS | HFA384X_RATES_5MBPS | HFA384X_RATES_11MBPS; } if (local->basic_rates == 0) local->basic_rates = HFA384X_RATES_1MBPS | HFA384X_RATES_2MBPS; if (!local->fw_ap) { ret = hostap_set_word(dev, HFA384X_RID_TXRATECONTROL, local->tx_rate_control); if (ret) { printk("%s: TXRateControl setting to %d failed\n", dev->name, local->tx_rate_control); goto fail; } ret = hostap_set_word(dev, HFA384X_RID_CNFSUPPORTEDRATES, local->tx_rate_control); if (ret) { printk("%s: cnfSupportedRates setting to %d failed\n", dev->name, local->tx_rate_control); } ret = hostap_set_word(dev, HFA384X_RID_CNFBASICRATES, local->basic_rates); if (ret) { printk("%s: cnfBasicRates setting to %d failed\n", dev->name, local->basic_rates); } ret = hostap_set_word(dev, HFA384X_RID_CREATEIBSS, 1); if (ret) { printk("%s: Create IBSS setting to 1 failed\n", dev->name); } } if (local->name_set) (void) hostap_set_string(dev, HFA384X_RID_CNFOWNNAME, local->name); if (hostap_set_encryption(local)) { printk(KERN_INFO "%s: could not configure encryption\n", dev->name); } (void) hostap_set_antsel(local); if (hostap_set_roaming(local)) { printk(KERN_INFO "%s: could not set host roaming\n", dev->name); } if (local->sta_fw_ver >= PRISM2_FW_VER(1,6,3) && hostap_set_word(dev, HFA384X_RID_CNFENHSECURITY, local->enh_sec)) printk(KERN_INFO "%s: cnfEnhSecurity setting to 0x%x failed\n", dev->name, local->enh_sec); /* 32-bit tallies were added in STA f/w 0.8.0, but they were apparently * not working correctly (last seven counters report bogus values). * This has been fixed in 0.8.2, so enable 32-bit tallies only * beginning with that firmware version. Another bug fix for 32-bit * tallies in 1.4.0; should 16-bit tallies be used for some other * versions, too? */ if (local->sta_fw_ver >= PRISM2_FW_VER(0,8,2)) { if (hostap_set_word(dev, HFA384X_RID_CNFTHIRTY2TALLY, 1)) { printk(KERN_INFO "%s: cnfThirty2Tally setting " "failed\n", dev->name); local->tallies32 = 0; } else local->tallies32 = 1; } else local->tallies32 = 0; hostap_set_auth_algs(local); if (hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, local->fragm_threshold)) { printk(KERN_INFO "%s: setting FragmentationThreshold to %d " "failed\n", dev->name, local->fragm_threshold); } if (hostap_set_word(dev, HFA384X_RID_RTSTHRESHOLD, local->rts_threshold)) { printk(KERN_INFO "%s: setting RTSThreshold to %d failed\n", dev->name, local->rts_threshold); } if (local->manual_retry_count >= 0 && hostap_set_word(dev, HFA384X_RID_CNFALTRETRYCOUNT, local->manual_retry_count)) { printk(KERN_INFO "%s: setting cnfAltRetryCount to %d failed\n", dev->name, local->manual_retry_count); } if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1) && hfa384x_get_rid(dev, HFA384X_RID_CNFDBMADJUST, &tmp, 2, 1) == 2) { local->rssi_to_dBm = le16_to_cpu(tmp); } if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->wpa && hostap_set_word(dev, HFA384X_RID_SSNHANDLINGMODE, 1)) { printk(KERN_INFO "%s: setting ssnHandlingMode to 1 failed\n", dev->name); } if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->generic_elem && hfa384x_set_rid(dev, HFA384X_RID_GENERICELEMENT, local->generic_elem, local->generic_elem_len)) { printk(KERN_INFO "%s: setting genericElement failed\n", dev->name); } fail: return ret; } static int prism2_hw_init(struct net_device *dev, int initial) { struct hostap_interface *iface; local_info_t *local; int ret, first = 1; unsigned long start, delay; PDEBUG(DEBUG_FLOW, "prism2_hw_init()\n"); iface = netdev_priv(dev); local = iface->local; clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits); init: /* initialize HFA 384x */ ret = hfa384x_cmd_no_wait(dev, HFA384X_CMDCODE_INIT, 0); if (ret) { printk(KERN_INFO "%s: first command failed - assuming card " "does not have primary firmware\n", dev_info); } if (first && (HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) { /* EvStat has Cmd bit set in some cases, so retry once if no * wait was needed */ HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); printk(KERN_DEBUG "%s: init command completed too quickly - " "retrying\n", dev->name); first = 0; goto init; } start = jiffies; delay = jiffies + HFA384X_INIT_TIMEOUT; while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) && time_before(jiffies, delay)) yield(); if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) { printk(KERN_DEBUG "%s: assuming no Primary image in " "flash - card initialization not completed\n", dev_info); local->no_pri = 1; #ifdef PRISM2_DOWNLOAD_SUPPORT if (local->sram_type == -1) local->sram_type = prism2_get_ram_size(local); #endif /* PRISM2_DOWNLOAD_SUPPORT */ return 1; } local->no_pri = 0; printk(KERN_DEBUG "prism2_hw_init: initialized in %lu ms\n", (jiffies - start) * 1000 / HZ); HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); return 0; } static int prism2_hw_init2(struct net_device *dev, int initial) { struct hostap_interface *iface; local_info_t *local; int i; iface = netdev_priv(dev); local = iface->local; #ifdef PRISM2_DOWNLOAD_SUPPORT kfree(local->pda); if (local->no_pri) local->pda = NULL; else local->pda = prism2_read_pda(dev); #endif /* PRISM2_DOWNLOAD_SUPPORT */ hfa384x_disable_interrupts(dev); #ifndef final_version HFA384X_OUTW(HFA384X_MAGIC, HFA384X_SWSUPPORT0_OFF); if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) { printk("SWSUPPORT0 write/read failed: %04X != %04X\n", HFA384X_INW(HFA384X_SWSUPPORT0_OFF), HFA384X_MAGIC); goto failed; } #endif if (initial || local->pri_only) { hfa384x_events_only_cmd(dev); /* get card version information */ if (prism2_get_version_info(dev, HFA384X_RID_NICID, "NIC") || prism2_get_version_info(dev, HFA384X_RID_PRIID, "PRI")) { hfa384x_disable_interrupts(dev); goto failed; } if (prism2_get_version_info(dev, HFA384X_RID_STAID, "STA")) { printk(KERN_DEBUG "%s: Failed to read STA f/w version " "- only Primary f/w present\n", dev->name); local->pri_only = 1; return 0; } local->pri_only = 0; hfa384x_disable_interrupts(dev); } /* FIX: could convert allocate_fid to use sleeping CmdCompl wait and * enable interrupts before this. This would also require some sort of * sleeping AllocEv waiting */ /* allocate TX FIDs */ local->txfid_len = PRISM2_TXFID_LEN; for (i = 0; i < PRISM2_TXFID_COUNT; i++) { local->txfid[i] = hfa384x_allocate_fid(dev, local->txfid_len); if (local->txfid[i] == 0xffff && local->txfid_len > 1600) { local->txfid[i] = hfa384x_allocate_fid(dev, 1600); if (local->txfid[i] != 0xffff) { printk(KERN_DEBUG "%s: Using shorter TX FID " "(1600 bytes)\n", dev->name); local->txfid_len = 1600; } } if (local->txfid[i] == 0xffff) goto failed; local->intransmitfid[i] = PRISM2_TXFID_EMPTY; } hfa384x_events_only_cmd(dev); if (initial) { u8 addr[ETH_ALEN] = {}; struct list_head *ptr; prism2_check_sta_fw_version(local); if (hfa384x_get_rid(dev, HFA384X_RID_CNFOWNMACADDR, addr, ETH_ALEN, 1) < 0) { printk("%s: could not get own MAC address\n", dev->name); } eth_hw_addr_set(dev, addr); list_for_each(ptr, &local->hostap_interfaces) { iface = list_entry(ptr, struct hostap_interface, list); eth_hw_addr_inherit(iface->dev, dev); } } else if (local->fw_ap) prism2_check_sta_fw_version(local); prism2_setup_rids(dev); /* MAC is now configured, but port 0 is not yet enabled */ return 0; failed: if (!local->no_pri) printk(KERN_WARNING "%s: Initialization failed\n", dev_info); return 1; } static int prism2_hw_enable(struct net_device *dev, int initial) { struct hostap_interface *iface; local_info_t *local; int was_resetting; iface = netdev_priv(dev); local = iface->local; was_resetting = local->hw_resetting; if (hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, NULL, NULL)) { printk("%s: MAC port 0 enabling failed\n", dev->name); return 1; } local->hw_ready = 1; local->hw_reset_tries = 0; local->hw_resetting = 0; hfa384x_enable_interrupts(dev); /* at least D-Link DWL-650 seems to require additional port reset * before it starts acting as an AP, so reset port automatically * here just in case */ if (initial && prism2_reset_port(dev)) { printk("%s: MAC port 0 resetting failed\n", dev->name); return 1; } if (was_resetting && netif_queue_stopped(dev)) { /* If hw_reset() was called during pending transmit, netif * queue was stopped. Wake it up now since the wlan card has * been resetted. */ netif_wake_queue(dev); } return 0; } static int prism2_hw_config(struct net_device *dev, int initial) { struct hostap_interface *iface; local_info_t *local; iface = netdev_priv(dev); local = iface->local; if (local->hw_downloading) return 1; if (prism2_hw_init(dev, initial)) { return local->no_pri ? 0 : 1; } if (prism2_hw_init2(dev, initial)) return 1; /* Enable firmware if secondary image is loaded and at least one of the * netdevices is up. */ if (!local->pri_only && (initial == 0 || (initial == 2 && local->num_dev_open > 0))) { if (!local->dev_enabled) prism2_callback(local, PRISM2_CALLBACK_ENABLE); local->dev_enabled = 1; return prism2_hw_enable(dev, initial); } return 0; } static void prism2_hw_shutdown(struct net_device *dev, int no_disable) { struct hostap_interface *iface; local_info_t *local; iface = netdev_priv(dev); local = iface->local; /* Allow only command completion events during disable */ hfa384x_events_only_cmd(dev); local->hw_ready = 0; if (local->dev_enabled) prism2_callback(local, PRISM2_CALLBACK_DISABLE); local->dev_enabled = 0; if (local->func->card_present && !local->func->card_present(local)) { printk(KERN_DEBUG "%s: card already removed or not configured " "during shutdown\n", dev->name); return; } if ((no_disable & HOSTAP_HW_NO_DISABLE) == 0 && hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, NULL, NULL)) printk(KERN_WARNING "%s: Shutdown failed\n", dev_info); hfa384x_disable_interrupts(dev); if (no_disable & HOSTAP_HW_ENABLE_CMDCOMPL) hfa384x_events_only_cmd(dev); else prism2_clear_cmd_queue(local); } static void prism2_hw_reset(struct net_device *dev) { struct hostap_interface *iface; local_info_t *local; #if 0 static long last_reset = 0; /* do not reset card more than once per second to avoid ending up in a * busy loop resetting the card */ if (time_before_eq(jiffies, last_reset + HZ)) return; last_reset = jiffies; #endif iface = netdev_priv(dev); local = iface->local; if (local->hw_downloading) return; if (local->hw_resetting) { printk(KERN_WARNING "%s: %s: already resetting card - " "ignoring reset request\n", dev_info, dev->name); return; } local->hw_reset_tries++; if (local->hw_reset_tries > 10) { printk(KERN_WARNING "%s: too many reset tries, skipping\n", dev->name); return; } printk(KERN_WARNING "%s: %s: resetting card\n", dev_info, dev->name); hfa384x_disable_interrupts(dev); local->hw_resetting = 1; if (local->func->cor_sreset) { /* Host system seems to hang in some cases with high traffic * load or shared interrupts during COR sreset. Disable shared * interrupts during reset to avoid these crashes. COS sreset * takes quite a long time, so it is unfortunate that this * seems to be needed. Anyway, I do not know of any better way * of avoiding the crash. */ disable_irq(dev->irq); local->func->cor_sreset(local); enable_irq(dev->irq); } prism2_hw_shutdown(dev, 1); prism2_hw_config(dev, 0); local->hw_resetting = 0; #ifdef PRISM2_DOWNLOAD_SUPPORT if (local->dl_pri) { printk(KERN_DEBUG "%s: persistent download of primary " "firmware\n", dev->name); if (prism2_download_genesis(local, local->dl_pri) < 0) printk(KERN_WARNING "%s: download (PRI) failed\n", dev->name); } if (local->dl_sec) { printk(KERN_DEBUG "%s: persistent download of secondary " "firmware\n", dev->name); if (prism2_download_volatile(local, local->dl_sec) < 0) printk(KERN_WARNING "%s: download (SEC) failed\n", dev->name); } #endif /* PRISM2_DOWNLOAD_SUPPORT */ /* TODO: restore beacon TIM bits for STAs that have buffered frames */ } static void prism2_schedule_reset(local_info_t *local) { schedule_work(&local->reset_queue); } /* Called only as scheduled task after noticing card timeout in interrupt * context */ static void handle_reset_queue(struct work_struct *work) { local_info_t *local = container_of(work, local_info_t, reset_queue); printk(KERN_DEBUG "%s: scheduled card reset\n", local->dev->name); prism2_hw_reset(local->dev); if (netif_queue_stopped(local->dev)) { int i; for (i = 0; i < PRISM2_TXFID_COUNT; i++) if (local->intransmitfid[i] == PRISM2_TXFID_EMPTY) { PDEBUG(DEBUG_EXTRA, "prism2_tx_timeout: " "wake up queue\n"); netif_wake_queue(local->dev); break; } } } static int prism2_get_txfid_idx(local_info_t *local) { int idx, end; unsigned long flags; spin_lock_irqsave(&local->txfidlock, flags); end = idx = local->next_txfid; do { if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) { local->intransmitfid[idx] = PRISM2_TXFID_RESERVED; spin_unlock_irqrestore(&local->txfidlock, flags); return idx; } idx++; if (idx >= PRISM2_TXFID_COUNT) idx = 0; } while (idx != end); spin_unlock_irqrestore(&local->txfidlock, flags); PDEBUG(DEBUG_EXTRA2, "prism2_get_txfid_idx: no room in txfid buf: " "packet dropped\n"); local->dev->stats.tx_dropped++; return -1; } /* Called only from hardware IRQ */ static void prism2_transmit_cb(struct net_device *dev, long context, u16 resp0, u16 res) { struct hostap_interface *iface; local_info_t *local; int idx = (int) context; iface = netdev_priv(dev); local = iface->local; if (res) { printk(KERN_DEBUG "%s: prism2_transmit_cb - res=0x%02x\n", dev->name, res); return; } if (idx < 0 || idx >= PRISM2_TXFID_COUNT) { printk(KERN_DEBUG "%s: prism2_transmit_cb called with invalid " "idx=%d\n", dev->name, idx); return; } if (!test_and_clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { printk(KERN_DEBUG "%s: driver bug: prism2_transmit_cb called " "with no pending transmit\n", dev->name); } if (netif_queue_stopped(dev)) { /* ready for next TX, so wake up queue that was stopped in * prism2_transmit() */ netif_wake_queue(dev); } spin_lock(&local->txfidlock); /* With reclaim, Resp0 contains new txfid for transmit; the old txfid * will be automatically allocated for the next TX frame */ local->intransmitfid[idx] = resp0; PDEBUG(DEBUG_FID, "%s: prism2_transmit_cb: txfid[%d]=0x%04x, " "resp0=0x%04x, transmit_txfid=0x%04x\n", dev->name, idx, local->txfid[idx], resp0, local->intransmitfid[local->next_txfid]); idx++; if (idx >= PRISM2_TXFID_COUNT) idx = 0; local->next_txfid = idx; /* check if all TX buffers are occupied */ do { if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) { spin_unlock(&local->txfidlock); return; } idx++; if (idx >= PRISM2_TXFID_COUNT) idx = 0; } while (idx != local->next_txfid); spin_unlock(&local->txfidlock); /* no empty TX buffers, stop queue */ netif_stop_queue(dev); } /* Called only from software IRQ if PCI bus master is not used (with bus master * this can be called both from software and hardware IRQ) */ static int prism2_transmit(struct net_device *dev, int idx) { struct hostap_interface *iface; local_info_t *local; int res; iface = netdev_priv(dev); local = iface->local; /* The driver tries to stop netif queue so that there would not be * more than one attempt to transmit frames going on; check that this * is really the case */ if (test_and_set_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { printk(KERN_DEBUG "%s: driver bug - prism2_transmit() called " "when previous TX was pending\n", dev->name); return -1; } /* stop the queue for the time that transmit is pending */ netif_stop_queue(dev); /* transmit packet */ res = hfa384x_cmd_callback( dev, HFA384X_CMDCODE_TRANSMIT | HFA384X_CMD_TX_RECLAIM, local->txfid[idx], prism2_transmit_cb, (long) idx); if (res) { printk(KERN_DEBUG "%s: prism2_transmit: CMDCODE_TRANSMIT " "failed (res=%d)\n", dev->name, res); dev->stats.tx_dropped++; netif_wake_queue(dev); return -1; } netif_trans_update(dev); /* Since we did not wait for command completion, the card continues * to process on the background and we will finish handling when * command completion event is handled (prism2_cmd_ev() function) */ return 0; } /* Send IEEE 802.11 frame (convert the header into Prism2 TX descriptor and * send the payload with this descriptor) */ /* Called only from software IRQ */ static int prism2_tx_80211(struct sk_buff *skb, struct net_device *dev) { struct hostap_interface *iface; local_info_t *local; struct hfa384x_tx_frame txdesc; struct hostap_skb_tx_data *meta; int hdr_len, data_len, idx, res, ret = -1; u16 tx_control; iface = netdev_priv(dev); local = iface->local; meta = (struct hostap_skb_tx_data *) skb->cb; prism2_callback(local, PRISM2_CALLBACK_TX_START); if ((local->func->card_present && !local->func->card_present(local)) || !local->hw_ready || local->hw_downloading || local->pri_only) { if (net_ratelimit()) { printk(KERN_DEBUG "%s: prism2_tx_80211: hw not ready -" " skipping\n", dev->name); } goto fail; } memset(&txdesc, 0, sizeof(txdesc)); /* skb->data starts with txdesc->frame_control */ hdr_len = sizeof(txdesc.header); BUILD_BUG_ON(hdr_len != 24); skb_copy_from_linear_data(skb, &txdesc.header, hdr_len); if (ieee80211_is_data(txdesc.frame_control) && ieee80211_has_a4(txdesc.frame_control) && skb->len >= 30) { /* Addr4 */ skb_copy_from_linear_data_offset(skb, hdr_len, txdesc.addr4, ETH_ALEN); hdr_len += ETH_ALEN; } tx_control = local->tx_control; if (meta->tx_cb_idx) { tx_control |= HFA384X_TX_CTRL_TX_OK; txdesc.sw_support = cpu_to_le32(meta->tx_cb_idx); } txdesc.tx_control = cpu_to_le16(tx_control); txdesc.tx_rate = meta->rate; data_len = skb->len - hdr_len; txdesc.data_len = cpu_to_le16(data_len); txdesc.len = cpu_to_be16(data_len); idx = prism2_get_txfid_idx(local); if (idx < 0) goto fail; if (local->frame_dump & PRISM2_DUMP_TX_HDR) hostap_dump_tx_header(dev->name, &txdesc); spin_lock(&local->baplock); res = hfa384x_setup_bap(dev, BAP0, local->txfid[idx], 0); if (!res) res = hfa384x_to_bap(dev, BAP0, &txdesc, sizeof(txdesc)); if (!res) res = hfa384x_to_bap(dev, BAP0, skb->data + hdr_len, skb->len - hdr_len); spin_unlock(&local->baplock); if (!res) res = prism2_transmit(dev, idx); if (res) { printk(KERN_DEBUG "%s: prism2_tx_80211 - to BAP0 failed\n", dev->name); local->intransmitfid[idx] = PRISM2_TXFID_EMPTY; schedule_work(&local->reset_queue); goto fail; } ret = 0; fail: prism2_callback(local, PRISM2_CALLBACK_TX_END); return ret; } /* Some SMP systems have reported number of odd errors with hostap_pci. fid * register has changed values between consecutive reads for an unknown reason. * This should really not happen, so more debugging is needed. This test * version is a bit slower, but it will detect most of such register changes * and will try to get the correct fid eventually. */ #define EXTRA_FID_READ_TESTS static u16 prism2_read_fid_reg(struct net_device *dev, u16 reg) { #ifdef EXTRA_FID_READ_TESTS u16 val, val2, val3; int i; for (i = 0; i < 10; i++) { val = HFA384X_INW(reg); val2 = HFA384X_INW(reg); val3 = HFA384X_INW(reg); if (val == val2 && val == val3) return val; printk(KERN_DEBUG "%s: detected fid change (try=%d, reg=%04x):" " %04x %04x %04x\n", dev->name, i, reg, val, val2, val3); if ((val == val2 || val == val3) && val != 0) return val; if (val2 == val3 && val2 != 0) return val2; } printk(KERN_WARNING "%s: Uhhuh.. could not read good fid from reg " "%04x (%04x %04x %04x)\n", dev->name, reg, val, val2, val3); return val; #else /* EXTRA_FID_READ_TESTS */ return HFA384X_INW(reg); #endif /* EXTRA_FID_READ_TESTS */ } /* Called only as a tasklet (software IRQ) */ static void prism2_rx(local_info_t *local) { struct net_device *dev = local->dev; int res, rx_pending = 0; u16 len, hdr_len, rxfid, status, macport; struct hfa384x_rx_frame rxdesc; struct sk_buff *skb = NULL; prism2_callback(local, PRISM2_CALLBACK_RX_START); rxfid = prism2_read_fid_reg(dev, HFA384X_RXFID_OFF); #ifndef final_version if (rxfid == 0) { rxfid = HFA384X_INW(HFA384X_RXFID_OFF); printk(KERN_DEBUG "prism2_rx: rxfid=0 (next 0x%04x)\n", rxfid); if (rxfid == 0) { schedule_work(&local->reset_queue); goto rx_dropped; } /* try to continue with the new rxfid value */ } #endif spin_lock(&local->baplock); res = hfa384x_setup_bap(dev, BAP0, rxfid, 0); if (!res) res = hfa384x_from_bap(dev, BAP0, &rxdesc, sizeof(rxdesc)); if (res) { spin_unlock(&local->baplock); printk(KERN_DEBUG "%s: copy from BAP0 failed %d\n", dev->name, res); if (res == -ETIMEDOUT) { schedule_work(&local->reset_queue); } goto rx_dropped; } len = le16_to_cpu(rxdesc.data_len); hdr_len = sizeof(rxdesc); status = le16_to_cpu(rxdesc.status); macport = (status >> 8) & 0x07; /* Drop frames with too large reported payload length. Monitor mode * seems to sometimes pass frames (e.g., ctrl::ack) with signed and * negative value, so allow also values 65522 .. 65534 (-14 .. -2) for * macport 7 */ if (len > PRISM2_DATA_MAXLEN + 8 /* WEP */) { if (macport == 7 && local->iw_mode == IW_MODE_MONITOR) { if (len >= (u16) -14) { hdr_len -= 65535 - len; hdr_len--; } len = 0; } else { spin_unlock(&local->baplock); printk(KERN_DEBUG "%s: Received frame with invalid " "length 0x%04x\n", dev->name, len); hostap_dump_rx_header(dev->name, &rxdesc); goto rx_dropped; } } skb = dev_alloc_skb(len + hdr_len); if (!skb) { spin_unlock(&local->baplock); printk(KERN_DEBUG "%s: RX failed to allocate skb\n", dev->name); goto rx_dropped; } skb->dev = dev; skb_put_data(skb, &rxdesc, hdr_len); if (len > 0) res = hfa384x_from_bap(dev, BAP0, skb_put(skb, len), len); spin_unlock(&local->baplock); if (res) { printk(KERN_DEBUG "%s: RX failed to read " "frame data\n", dev->name); goto rx_dropped; } skb_queue_tail(&local->rx_list, skb); tasklet_schedule(&local->rx_tasklet); rx_exit: prism2_callback(local, PRISM2_CALLBACK_RX_END); if (!rx_pending) { HFA384X_OUTW(HFA384X_EV_RX, HFA384X_EVACK_OFF); } return; rx_dropped: dev->stats.rx_dropped++; if (skb) dev_kfree_skb(skb); goto rx_exit; } /* Called only as a tasklet (software IRQ) */ static void hostap_rx_skb(local_info_t *local, struct sk_buff *skb) { struct hfa384x_rx_frame *rxdesc; struct net_device *dev = skb->dev; struct hostap_80211_rx_status stats; int hdrlen, rx_hdrlen; rx_hdrlen = sizeof(*rxdesc); if (skb->len < sizeof(*rxdesc)) { /* Allow monitor mode to receive shorter frames */ if (local->iw_mode == IW_MODE_MONITOR && skb->len >= sizeof(*rxdesc) - 30) { rx_hdrlen = skb->len; } else { dev_kfree_skb(skb); return; } } rxdesc = (struct hfa384x_rx_frame *) skb->data; if (local->frame_dump & PRISM2_DUMP_RX_HDR && skb->len >= sizeof(*rxdesc)) hostap_dump_rx_header(dev->name, rxdesc); if (le16_to_cpu(rxdesc->status) & HFA384X_RX_STATUS_FCSERR && (!local->monitor_allow_fcserr || local->iw_mode != IW_MODE_MONITOR)) goto drop; if (skb->len > PRISM2_DATA_MAXLEN) { printk(KERN_DEBUG "%s: RX: len(%d) > MAX(%d)\n", dev->name, skb->len, PRISM2_DATA_MAXLEN); goto drop; } stats.mac_time = le32_to_cpu(rxdesc->time); stats.signal = rxdesc->signal - local->rssi_to_dBm; stats.noise = rxdesc->silence - local->rssi_to_dBm; stats.rate = rxdesc->rate; /* Convert Prism2 RX structure into IEEE 802.11 header */ hdrlen = hostap_80211_get_hdrlen(rxdesc->frame_control); if (hdrlen > rx_hdrlen) hdrlen = rx_hdrlen; memmove(skb_pull(skb, rx_hdrlen - hdrlen), &rxdesc->frame_control, hdrlen); hostap_80211_rx(dev, skb, &stats); return; drop: dev_kfree_skb(skb); } /* Called only as a tasklet (software IRQ) */ static void hostap_rx_tasklet(struct tasklet_struct *t) { local_info_t *local = from_tasklet(local, t, rx_tasklet); struct sk_buff *skb; while ((skb = skb_dequeue(&local->rx_list)) != NULL) hostap_rx_skb(local, skb); } /* Called only from hardware IRQ */ static void prism2_alloc_ev(struct net_device *dev) { struct hostap_interface *iface; local_info_t *local; int idx; u16 fid; iface = netdev_priv(dev); local = iface->local; fid = prism2_read_fid_reg(dev, HFA384X_ALLOCFID_OFF); PDEBUG(DEBUG_FID, "FID: interrupt: ALLOC - fid=0x%04x\n", fid); spin_lock(&local->txfidlock); idx = local->next_alloc; do { if (local->txfid[idx] == fid) { PDEBUG(DEBUG_FID, "FID: found matching txfid[%d]\n", idx); #ifndef final_version if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) printk("Already released txfid found at idx " "%d\n", idx); if (local->intransmitfid[idx] == PRISM2_TXFID_RESERVED) printk("Already reserved txfid found at idx " "%d\n", idx); #endif local->intransmitfid[idx] = PRISM2_TXFID_EMPTY; idx++; local->next_alloc = idx >= PRISM2_TXFID_COUNT ? 0 : idx; if (!test_bit(HOSTAP_BITS_TRANSMIT, &local->bits) && netif_queue_stopped(dev)) netif_wake_queue(dev); spin_unlock(&local->txfidlock); return; } idx++; if (idx >= PRISM2_TXFID_COUNT) idx = 0; } while (idx != local->next_alloc); printk(KERN_WARNING "%s: could not find matching txfid (0x%04x, new " "read 0x%04x) for alloc event\n", dev->name, fid, HFA384X_INW(HFA384X_ALLOCFID_OFF)); printk(KERN_DEBUG "TXFIDs:"); for (idx = 0; idx < PRISM2_TXFID_COUNT; idx++) printk(" %04x[%04x]", local->txfid[idx], local->intransmitfid[idx]); printk("\n"); spin_unlock(&local->txfidlock); /* FIX: should probably schedule reset; reference to one txfid was lost * completely.. Bad things will happen if we run out of txfids * Actually, this will cause netdev watchdog to notice TX timeout and * then card reset after all txfids have been leaked. */ } /* Called only as a tasklet (software IRQ) */ static void hostap_tx_callback(local_info_t *local, struct hfa384x_tx_frame *txdesc, int ok, char *payload) { u16 sw_support, hdrlen, len; struct sk_buff *skb; struct hostap_tx_callback_info *cb; /* Make sure that frame was from us. */ if (!ether_addr_equal(txdesc->addr2, local->dev->dev_addr)) { printk(KERN_DEBUG "%s: TX callback - foreign frame\n", local->dev->name); return; } sw_support = le32_to_cpu(txdesc->sw_support); spin_lock(&local->lock); cb = local->tx_callback; while (cb != NULL && cb->idx != sw_support) cb = cb->next; spin_unlock(&local->lock); if (cb == NULL) { printk(KERN_DEBUG "%s: could not find TX callback (idx %d)\n", local->dev->name, sw_support); return; } hdrlen = hostap_80211_get_hdrlen(txdesc->frame_control); len = le16_to_cpu(txdesc->data_len); skb = dev_alloc_skb(hdrlen + len); if (skb == NULL) { printk(KERN_DEBUG "%s: hostap_tx_callback failed to allocate " "skb\n", local->dev->name); return; } skb_put_data(skb, (void *)&txdesc->frame_control, hdrlen); if (payload) skb_put_data(skb, payload, len); skb->dev = local->dev; skb_reset_mac_header(skb); cb->func(skb, ok, cb->data); } /* Called only as a tasklet (software IRQ) */ static int hostap_tx_compl_read(local_info_t *local, int error, struct hfa384x_tx_frame *txdesc, char **payload) { u16 fid, len; int res, ret = 0; struct net_device *dev = local->dev; fid = prism2_read_fid_reg(dev, HFA384X_TXCOMPLFID_OFF); PDEBUG(DEBUG_FID, "interrupt: TX (err=%d) - fid=0x%04x\n", fid, error); spin_lock(&local->baplock); res = hfa384x_setup_bap(dev, BAP0, fid, 0); if (!res) res = hfa384x_from_bap(dev, BAP0, txdesc, sizeof(*txdesc)); if (res) { PDEBUG(DEBUG_EXTRA, "%s: TX (err=%d) - fid=0x%04x - could not " "read txdesc\n", dev->name, error, fid); if (res == -ETIMEDOUT) { schedule_work(&local->reset_queue); } ret = -1; goto fail; } if (txdesc->sw_support) { len = le16_to_cpu(txdesc->data_len); if (len < PRISM2_DATA_MAXLEN) { *payload = kmalloc(len, GFP_ATOMIC); if (*payload == NULL || hfa384x_from_bap(dev, BAP0, *payload, len)) { PDEBUG(DEBUG_EXTRA, "%s: could not read TX " "frame payload\n", dev->name); kfree(*payload); *payload = NULL; ret = -1; goto fail; } } } fail: spin_unlock(&local->baplock); return ret; } /* Called only as a tasklet (software IRQ) */ static void prism2_tx_ev(local_info_t *local) { struct net_device *dev = local->dev; char *payload = NULL; struct hfa384x_tx_frame txdesc; if (hostap_tx_compl_read(local, 0, &txdesc, &payload)) goto fail; if (local->frame_dump & PRISM2_DUMP_TX_HDR) { PDEBUG(DEBUG_EXTRA, "%s: TX - status=0x%04x " "retry_count=%d tx_rate=%d seq_ctrl=%d " "duration_id=%d\n", dev->name, le16_to_cpu(txdesc.status), txdesc.retry_count, txdesc.tx_rate, le16_to_cpu(txdesc.seq_ctrl), le16_to_cpu(txdesc.duration_id)); } if (txdesc.sw_support) hostap_tx_callback(local, &txdesc, 1, payload); kfree(payload); fail: HFA384X_OUTW(HFA384X_EV_TX, HFA384X_EVACK_OFF); } /* Called only as a tasklet (software IRQ) */ static void hostap_sta_tx_exc_tasklet(struct tasklet_struct *t) { local_info_t *local = from_tasklet(local, t, sta_tx_exc_tasklet); struct sk_buff *skb; while ((skb = skb_dequeue(&local->sta_tx_exc_list)) != NULL) { struct hfa384x_tx_frame *txdesc = (struct hfa384x_tx_frame *) skb->data; if (skb->len >= sizeof(*txdesc)) { /* Convert Prism2 RX structure into IEEE 802.11 header */ int hdrlen = hostap_80211_get_hdrlen(txdesc->frame_control); memmove(skb_pull(skb, sizeof(*txdesc) - hdrlen), &txdesc->frame_control, hdrlen); hostap_handle_sta_tx_exc(local, skb); } dev_kfree_skb(skb); } } /* Called only as a tasklet (software IRQ) */ static void prism2_txexc(local_info_t *local) { struct net_device *dev = local->dev; u16 status, fc; int show_dump, res; char *payload = NULL; struct hfa384x_tx_frame txdesc; show_dump = local->frame_dump & PRISM2_DUMP_TXEXC_HDR; dev->stats.tx_errors++; res = hostap_tx_compl_read(local, 1, &txdesc, &payload); HFA384X_OUTW(HFA384X_EV_TXEXC, HFA384X_EVACK_OFF); if (res) return; status = le16_to_cpu(txdesc.status); /* We produce a TXDROP event only for retry or lifetime * exceeded, because that's the only status that really mean * that this particular node went away. * Other errors means that *we* screwed up. - Jean II */ if (status & (HFA384X_TX_STATUS_RETRYERR | HFA384X_TX_STATUS_AGEDERR)) { union iwreq_data wrqu; /* Copy 802.11 dest address. */ memcpy(wrqu.addr.sa_data, txdesc.addr1, ETH_ALEN); wrqu.addr.sa_family = ARPHRD_ETHER; wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL); } else show_dump = 1; if (local->iw_mode == IW_MODE_MASTER || local->iw_mode == IW_MODE_REPEAT || local->wds_type & HOSTAP_WDS_AP_CLIENT) { struct sk_buff *skb; skb = dev_alloc_skb(sizeof(txdesc)); if (skb) { skb_put_data(skb, &txdesc, sizeof(txdesc)); skb_queue_tail(&local->sta_tx_exc_list, skb); tasklet_schedule(&local->sta_tx_exc_tasklet); } } if (txdesc.sw_support) hostap_tx_callback(local, &txdesc, 0, payload); kfree(payload); if (!show_dump) return; PDEBUG(DEBUG_EXTRA, "%s: TXEXC - status=0x%04x (%s%s%s%s)" " tx_control=%04x\n", dev->name, status, status & HFA384X_TX_STATUS_RETRYERR ? "[RetryErr]" : "", status & HFA384X_TX_STATUS_AGEDERR ? "[AgedErr]" : "", status & HFA384X_TX_STATUS_DISCON ? "[Discon]" : "", status & HFA384X_TX_STATUS_FORMERR ? "[FormErr]" : "", le16_to_cpu(txdesc.tx_control)); fc = le16_to_cpu(txdesc.frame_control); PDEBUG(DEBUG_EXTRA, " retry_count=%d tx_rate=%d fc=0x%04x " "(%s%s%s::%d%s%s)\n", txdesc.retry_count, txdesc.tx_rate, fc, ieee80211_is_mgmt(txdesc.frame_control) ? "Mgmt" : "", ieee80211_is_ctl(txdesc.frame_control) ? "Ctrl" : "", ieee80211_is_data(txdesc.frame_control) ? "Data" : "", (fc & IEEE80211_FCTL_STYPE) >> 4, ieee80211_has_tods(txdesc.frame_control) ? " ToDS" : "", ieee80211_has_fromds(txdesc.frame_control) ? " FromDS" : ""); PDEBUG(DEBUG_EXTRA, " A1=%pM A2=%pM A3=%pM A4=%pM\n", txdesc.addr1, txdesc.addr2, txdesc.addr3, txdesc.addr4); } /* Called only as a tasklet (software IRQ) */ static void hostap_info_tasklet(struct tasklet_struct *t) { local_info_t *local = from_tasklet(local, t, info_tasklet); struct sk_buff *skb; while ((skb = skb_dequeue(&local->info_list)) != NULL) { hostap_info_process(local, skb); dev_kfree_skb(skb); } } /* Called only as a tasklet (software IRQ) */ static void prism2_info(local_info_t *local) { struct net_device *dev = local->dev; u16 fid; int res, left; struct hfa384x_info_frame info; struct sk_buff *skb; fid = HFA384X_INW(HFA384X_INFOFID_OFF); spin_lock(&local->baplock); res = hfa384x_setup_bap(dev, BAP0, fid, 0); if (!res) res = hfa384x_from_bap(dev, BAP0, &info, sizeof(info)); if (res) { spin_unlock(&local->baplock); printk(KERN_DEBUG "Could not get info frame (fid=0x%04x)\n", fid); if (res == -ETIMEDOUT) { schedule_work(&local->reset_queue); } goto out; } left = (le16_to_cpu(info.len) - 1) * 2; if (info.len & cpu_to_le16(0x8000) || info.len == 0 || left > 2060) { /* data register seems to give 0x8000 in some error cases even * though busy bit is not set in offset register; * in addition, length must be at least 1 due to type field */ spin_unlock(&local->baplock); printk(KERN_DEBUG "%s: Received info frame with invalid " "length 0x%04x (type 0x%04x)\n", dev->name, le16_to_cpu(info.len), le16_to_cpu(info.type)); goto out; } skb = dev_alloc_skb(sizeof(info) + left); if (skb == NULL) { spin_unlock(&local->baplock); printk(KERN_DEBUG "%s: Could not allocate skb for info " "frame\n", dev->name); goto out; } skb_put_data(skb, &info, sizeof(info)); if (left > 0 && hfa384x_from_bap(dev, BAP0, skb_put(skb, left), left)) { spin_unlock(&local->baplock); printk(KERN_WARNING "%s: Info frame read failed (fid=0x%04x, " "len=0x%04x, type=0x%04x\n", dev->name, fid, le16_to_cpu(info.len), le16_to_cpu(info.type)); dev_kfree_skb(skb); goto out; } spin_unlock(&local->baplock); skb_queue_tail(&local->info_list, skb); tasklet_schedule(&local->info_tasklet); out: HFA384X_OUTW(HFA384X_EV_INFO, HFA384X_EVACK_OFF); } /* Called only as a tasklet (software IRQ) */ static void hostap_bap_tasklet(struct tasklet_struct *t) { local_info_t *local = from_tasklet(local, t, bap_tasklet); struct net_device *dev = local->dev; u16 ev; int frames = 30; if (local->func->card_present && !local->func->card_present(local)) return; set_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits); /* Process all pending BAP events without generating new interrupts * for them */ while (frames-- > 0) { ev = HFA384X_INW(HFA384X_EVSTAT_OFF); if (ev == 0xffff || !(ev & HFA384X_BAP0_EVENTS)) break; if (ev & HFA384X_EV_RX) prism2_rx(local); if (ev & HFA384X_EV_INFO) prism2_info(local); if (ev & HFA384X_EV_TX) prism2_tx_ev(local); if (ev & HFA384X_EV_TXEXC) prism2_txexc(local); } set_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits); clear_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits); /* Enable interrupts for new BAP events */ hfa384x_events_all(dev); clear_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits); } /* Called only from hardware IRQ */ static void prism2_infdrop(struct net_device *dev) { static unsigned long last_inquire = 0; PDEBUG(DEBUG_EXTRA, "%s: INFDROP event\n", dev->name); /* some firmware versions seem to get stuck with * full CommTallies in high traffic load cases; every * packet will then cause INFDROP event and CommTallies * info frame will not be sent automatically. Try to * get out of this state by inquiring CommTallies. */ if (!last_inquire || time_after(jiffies, last_inquire + HZ)) { hfa384x_cmd_callback(dev, HFA384X_CMDCODE_INQUIRE, HFA384X_INFO_COMMTALLIES, NULL, 0); last_inquire = jiffies; } } /* Called only from hardware IRQ */ static void prism2_ev_tick(struct net_device *dev) { struct hostap_interface *iface; local_info_t *local; u16 evstat, inten; static int prev_stuck = 0; iface = netdev_priv(dev); local = iface->local; if (time_after(jiffies, local->last_tick_timer + 5 * HZ) && local->last_tick_timer) { evstat = HFA384X_INW(HFA384X_EVSTAT_OFF); inten = HFA384X_INW(HFA384X_INTEN_OFF); if (!prev_stuck) { printk(KERN_INFO "%s: SW TICK stuck? " "bits=0x%lx EvStat=%04x IntEn=%04x\n", dev->name, local->bits, evstat, inten); } local->sw_tick_stuck++; if ((evstat & HFA384X_BAP0_EVENTS) && (inten & HFA384X_BAP0_EVENTS)) { printk(KERN_INFO "%s: trying to recover from IRQ " "hang\n", dev->name); hfa384x_events_no_bap0(dev); } prev_stuck = 1; } else prev_stuck = 0; } /* Called only from hardware IRQ */ static void prism2_check_magic(local_info_t *local) { /* at least PCI Prism2.5 with bus mastering seems to sometimes * return 0x0000 in SWSUPPORT0 for unknown reason, but re-reading the * register once or twice seems to get the correct value.. PCI cards * cannot anyway be removed during normal operation, so there is not * really any need for this verification with them. */ #ifndef PRISM2_PCI #ifndef final_version static unsigned long last_magic_err = 0; struct net_device *dev = local->dev; if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) { if (!local->hw_ready) return; HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); if (time_after(jiffies, last_magic_err + 10 * HZ)) { printk("%s: Interrupt, but SWSUPPORT0 does not match: " "%04X != %04X - card removed?\n", dev->name, HFA384X_INW(HFA384X_SWSUPPORT0_OFF), HFA384X_MAGIC); last_magic_err = jiffies; } else if (net_ratelimit()) { printk(KERN_DEBUG "%s: interrupt - SWSUPPORT0=%04x " "MAGIC=%04x\n", dev->name, HFA384X_INW(HFA384X_SWSUPPORT0_OFF), HFA384X_MAGIC); } if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != 0xffff) schedule_work(&local->reset_queue); return; } #endif /* final_version */ #endif /* !PRISM2_PCI */ } /* Called only from hardware IRQ */ static irqreturn_t prism2_interrupt(int irq, void *dev_id) { struct net_device *dev = dev_id; struct hostap_interface *iface; local_info_t *local; int events = 0; u16 ev; iface = netdev_priv(dev); local = iface->local; /* Detect early interrupt before driver is fully configured */ spin_lock(&local->irq_init_lock); if (!dev->base_addr) { if (net_ratelimit()) { printk(KERN_DEBUG "%s: Interrupt, but dev not configured\n", dev->name); } spin_unlock(&local->irq_init_lock); return IRQ_HANDLED; } spin_unlock(&local->irq_init_lock); prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 0); if (local->func->card_present && !local->func->card_present(local)) { if (net_ratelimit()) { printk(KERN_DEBUG "%s: Interrupt, but dev not OK\n", dev->name); } return IRQ_HANDLED; } prism2_check_magic(local); for (;;) { ev = HFA384X_INW(HFA384X_EVSTAT_OFF); if (ev == 0xffff) { if (local->shutdown) return IRQ_HANDLED; HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); printk(KERN_DEBUG "%s: prism2_interrupt: ev=0xffff\n", dev->name); return IRQ_HANDLED; } ev &= HFA384X_INW(HFA384X_INTEN_OFF); if (ev == 0) break; if (ev & HFA384X_EV_CMD) { prism2_cmd_ev(dev); } /* Above events are needed even before hw is ready, but other * events should be skipped during initialization. This may * change for AllocEv if allocate_fid is implemented without * busy waiting. */ if (!local->hw_ready || local->hw_resetting || !local->dev_enabled) { ev = HFA384X_INW(HFA384X_EVSTAT_OFF); if (ev & HFA384X_EV_CMD) goto next_event; if ((ev & HFA384X_EVENT_MASK) == 0) return IRQ_HANDLED; if (local->dev_enabled && (ev & ~HFA384X_EV_TICK) && net_ratelimit()) { printk(KERN_DEBUG "%s: prism2_interrupt: hw " "not ready; skipping events 0x%04x " "(IntEn=0x%04x)%s%s%s\n", dev->name, ev, HFA384X_INW(HFA384X_INTEN_OFF), !local->hw_ready ? " (!hw_ready)" : "", local->hw_resetting ? " (hw_resetting)" : "", !local->dev_enabled ? " (!dev_enabled)" : ""); } HFA384X_OUTW(ev, HFA384X_EVACK_OFF); return IRQ_HANDLED; } if (ev & HFA384X_EV_TICK) { prism2_ev_tick(dev); HFA384X_OUTW(HFA384X_EV_TICK, HFA384X_EVACK_OFF); } if (ev & HFA384X_EV_ALLOC) { prism2_alloc_ev(dev); HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF); } /* Reading data from the card is quite time consuming, so do it * in tasklets. TX, TXEXC, RX, and INFO events will be ACKed * and unmasked after needed data has been read completely. */ if (ev & HFA384X_BAP0_EVENTS) { hfa384x_events_no_bap0(dev); tasklet_schedule(&local->bap_tasklet); } #ifndef final_version if (ev & HFA384X_EV_WTERR) { PDEBUG(DEBUG_EXTRA, "%s: WTERR event\n", dev->name); HFA384X_OUTW(HFA384X_EV_WTERR, HFA384X_EVACK_OFF); } #endif /* final_version */ if (ev & HFA384X_EV_INFDROP) { prism2_infdrop(dev); HFA384X_OUTW(HFA384X_EV_INFDROP, HFA384X_EVACK_OFF); } next_event: events++; if (events >= PRISM2_MAX_INTERRUPT_EVENTS) { PDEBUG(DEBUG_EXTRA, "prism2_interrupt: >%d events " "(EvStat=0x%04x)\n", PRISM2_MAX_INTERRUPT_EVENTS, HFA384X_INW(HFA384X_EVSTAT_OFF)); break; } } prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 1); return IRQ_RETVAL(events); } static void prism2_check_sta_fw_version(local_info_t *local) { struct hfa384x_comp_ident comp; int id, variant, major, minor; if (hfa384x_get_rid(local->dev, HFA384X_RID_STAID, &comp, sizeof(comp), 1) < 0) return; local->fw_ap = 0; id = le16_to_cpu(comp.id); if (id != HFA384X_COMP_ID_STA) { if (id == HFA384X_COMP_ID_FW_AP) local->fw_ap = 1; return; } major = __le16_to_cpu(comp.major); minor = __le16_to_cpu(comp.minor); variant = __le16_to_cpu(comp.variant); local->sta_fw_ver = PRISM2_FW_VER(major, minor, variant); /* Station firmware versions before 1.4.x seem to have a bug in * firmware-based WEP encryption when using Host AP mode, so use * host_encrypt as a default for them. Firmware version 1.4.9 is the * first one that has been seen to produce correct encryption, but the * bug might be fixed before that (although, at least 1.4.2 is broken). */ local->fw_encrypt_ok = local->sta_fw_ver >= PRISM2_FW_VER(1,4,9); if (local->iw_mode == IW_MODE_MASTER && !local->host_encrypt && !local->fw_encrypt_ok) { printk(KERN_DEBUG "%s: defaulting to host-based encryption as " "a workaround for firmware bug in Host AP mode WEP\n", local->dev->name); local->host_encrypt = 1; } /* IEEE 802.11 standard compliant WDS frames (4 addresses) were broken * in station firmware versions before 1.5.x. With these versions, the * driver uses a workaround with bogus frame format (4th address after * the payload). This is not compatible with other AP devices. Since * the firmware bug is fixed in the latest station firmware versions, * automatically enable standard compliant mode for cards using station * firmware version 1.5.0 or newer. */ if (local->sta_fw_ver >= PRISM2_FW_VER(1,5,0)) local->wds_type |= HOSTAP_WDS_STANDARD_FRAME; else { printk(KERN_DEBUG "%s: defaulting to bogus WDS frame as a " "workaround for firmware bug in Host AP mode WDS\n", local->dev->name); } hostap_check_sta_fw_version(local->ap, local->sta_fw_ver); } static void hostap_passive_scan(struct timer_list *t) { local_info_t *local = from_timer(local, t, passive_scan_timer); struct net_device *dev = local->dev; u16 chan; if (local->passive_scan_interval <= 0) return; if (local->passive_scan_state == PASSIVE_SCAN_LISTEN) { int max_tries = 16; /* Even though host system does not really know when the WLAN * MAC is sending frames, try to avoid changing channels for * passive scanning when a host-generated frame is being * transmitted */ if (test_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { printk(KERN_DEBUG "%s: passive scan detected pending " "TX - delaying\n", dev->name); local->passive_scan_timer.expires = jiffies + HZ / 10; add_timer(&local->passive_scan_timer); return; } do { local->passive_scan_channel++; if (local->passive_scan_channel > 14) local->passive_scan_channel = 1; max_tries--; } while (!(local->channel_mask & (1 << (local->passive_scan_channel - 1))) && max_tries > 0); if (max_tries == 0) { printk(KERN_INFO "%s: no allowed passive scan channels" " found\n", dev->name); return; } printk(KERN_DEBUG "%s: passive scan channel %d\n", dev->name, local->passive_scan_channel); chan = local->passive_scan_channel; local->passive_scan_state = PASSIVE_SCAN_WAIT; local->passive_scan_timer.expires = jiffies + HZ / 10; } else { chan = local->channel; local->passive_scan_state = PASSIVE_SCAN_LISTEN; local->passive_scan_timer.expires = jiffies + local->passive_scan_interval * HZ; } if (hfa384x_cmd_callback(dev, HFA384X_CMDCODE_TEST | (HFA384X_TEST_CHANGE_CHANNEL << 8), chan, NULL, 0)) printk(KERN_ERR "%s: passive scan channel set %d " "failed\n", dev->name, chan); add_timer(&local->passive_scan_timer); } /* Called only as a scheduled task when communications quality values should * be updated. */ static void handle_comms_qual_update(struct work_struct *work) { local_info_t *local = container_of(work, local_info_t, comms_qual_update); prism2_update_comms_qual(local->dev); } /* Software watchdog - called as a timer. Hardware interrupt (Tick event) is * used to monitor that local->last_tick_timer is being updated. If not, * interrupt busy-loop is assumed and driver tries to recover by masking out * some events. */ static void hostap_tick_timer(struct timer_list *t) { static unsigned long last_inquire = 0; local_info_t *local = from_timer(local, t, tick_timer); local->last_tick_timer = jiffies; /* Inquire CommTallies every 10 seconds to keep the statistics updated * more often during low load and when using 32-bit tallies. */ if ((!last_inquire || time_after(jiffies, last_inquire + 10 * HZ)) && !local->hw_downloading && local->hw_ready && !local->hw_resetting && local->dev_enabled) { hfa384x_cmd_callback(local->dev, HFA384X_CMDCODE_INQUIRE, HFA384X_INFO_COMMTALLIES, NULL, 0); last_inquire = jiffies; } if ((local->last_comms_qual_update == 0 || time_after(jiffies, local->last_comms_qual_update + 10 * HZ)) && (local->iw_mode == IW_MODE_INFRA || local->iw_mode == IW_MODE_ADHOC)) { schedule_work(&local->comms_qual_update); } local->tick_timer.expires = jiffies + 2 * HZ; add_timer(&local->tick_timer); } #if !defined(PRISM2_NO_PROCFS_DEBUG) && defined(CONFIG_PROC_FS) static u16 hfa384x_read_reg(struct net_device *dev, u16 reg) { return HFA384X_INW(reg); } static int prism2_registers_proc_show(struct seq_file *m, void *v) { local_info_t *local = m->private; #define SHOW_REG(n) \ seq_printf(m, #n "=%04x\n", hfa384x_read_reg(local->dev, HFA384X_##n##_OFF)) SHOW_REG(CMD); SHOW_REG(PARAM0); SHOW_REG(PARAM1); SHOW_REG(PARAM2); SHOW_REG(STATUS); SHOW_REG(RESP0); SHOW_REG(RESP1); SHOW_REG(RESP2); SHOW_REG(INFOFID); SHOW_REG(CONTROL); SHOW_REG(SELECT0); SHOW_REG(SELECT1); SHOW_REG(OFFSET0); SHOW_REG(OFFSET1); SHOW_REG(RXFID); SHOW_REG(ALLOCFID); SHOW_REG(TXCOMPLFID); SHOW_REG(SWSUPPORT0); SHOW_REG(SWSUPPORT1); SHOW_REG(SWSUPPORT2); SHOW_REG(EVSTAT); SHOW_REG(INTEN); SHOW_REG(EVACK); /* Do not read data registers, because they change the state of the * MAC (offset += 2) */ /* SHOW_REG(DATA0); */ /* SHOW_REG(DATA1); */ SHOW_REG(AUXPAGE); SHOW_REG(AUXOFFSET); /* SHOW_REG(AUXDATA); */ #ifdef PRISM2_PCI SHOW_REG(PCICOR); SHOW_REG(PCIHCR); SHOW_REG(PCI_M0_ADDRH); SHOW_REG(PCI_M0_ADDRL); SHOW_REG(PCI_M0_LEN); SHOW_REG(PCI_M0_CTL); SHOW_REG(PCI_STATUS); SHOW_REG(PCI_M1_ADDRH); SHOW_REG(PCI_M1_ADDRL); SHOW_REG(PCI_M1_LEN); SHOW_REG(PCI_M1_CTL); #endif /* PRISM2_PCI */ return 0; } #endif struct set_tim_data { struct list_head list; int aid; int set; }; static int prism2_set_tim(struct net_device *dev, int aid, int set) { struct list_head *ptr; struct set_tim_data *new_entry; struct hostap_interface *iface; local_info_t *local; iface = netdev_priv(dev); local = iface->local; new_entry = kzalloc(sizeof(*new_entry), GFP_ATOMIC); if (new_entry == NULL) return -ENOMEM; new_entry->aid = aid; new_entry->set = set; spin_lock_bh(&local->set_tim_lock); list_for_each(ptr, &local->set_tim_list) { struct set_tim_data *entry = list_entry(ptr, struct set_tim_data, list); if (entry->aid == aid) { PDEBUG(DEBUG_PS2, "%s: prism2_set_tim: aid=%d " "set=%d ==> %d\n", local->dev->name, aid, entry->set, set); entry->set = set; kfree(new_entry); new_entry = NULL; break; } } if (new_entry) list_add_tail(&new_entry->list, &local->set_tim_list); spin_unlock_bh(&local->set_tim_lock); schedule_work(&local->set_tim_queue); return 0; } static void handle_set_tim_queue(struct work_struct *work) { local_info_t *local = container_of(work, local_info_t, set_tim_queue); struct set_tim_data *entry; u16 val; for (;;) { entry = NULL; spin_lock_bh(&local->set_tim_lock); if (!list_empty(&local->set_tim_list)) { entry = list_entry(local->set_tim_list.next, struct set_tim_data, list); list_del(&entry->list); } spin_unlock_bh(&local->set_tim_lock); if (!entry) break; PDEBUG(DEBUG_PS2, "%s: handle_set_tim_queue: aid=%d set=%d\n", local->dev->name, entry->aid, entry->set); val = entry->aid; if (entry->set) val |= 0x8000; if (hostap_set_word(local->dev, HFA384X_RID_CNFTIMCTRL, val)) { printk(KERN_DEBUG "%s: set_tim failed (aid=%d " "set=%d)\n", local->dev->name, entry->aid, entry->set); } kfree(entry); } } static void prism2_clear_set_tim_queue(local_info_t *local) { struct list_head *ptr, *n; list_for_each_safe(ptr, n, &local->set_tim_list) { struct set_tim_data *entry; entry = list_entry(ptr, struct set_tim_data, list); list_del(&entry->list); kfree(entry); } } /* * HostAP uses two layers of net devices, where the inner * layer gets called all the time from the outer layer. * This is a natural nesting, which needs a split lock type. */ static struct lock_class_key hostap_netdev_xmit_lock_key; static struct lock_class_key hostap_netdev_addr_lock_key; static void prism2_set_lockdep_class_one(struct net_device *dev, struct netdev_queue *txq, void *_unused) { lockdep_set_class(&txq->_xmit_lock, &hostap_netdev_xmit_lock_key); } static void prism2_set_lockdep_class(struct net_device *dev) { lockdep_set_class(&dev->addr_list_lock, &hostap_netdev_addr_lock_key); netdev_for_each_tx_queue(dev, prism2_set_lockdep_class_one, NULL); } static struct net_device * prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx, struct device *sdev) { struct net_device *dev; struct hostap_interface *iface; struct local_info *local; int len, i, ret; if (funcs == NULL) return NULL; len = strlen(dev_template); if (len >= IFNAMSIZ || strstr(dev_template, "%d") == NULL) { printk(KERN_WARNING "hostap: Invalid dev_template='%s'\n", dev_template); return NULL; } len = sizeof(struct hostap_interface) + 3 + sizeof(struct local_info) + 3 + sizeof(struct ap_data); dev = alloc_etherdev(len); if (dev == NULL) return NULL; iface = netdev_priv(dev); local = (struct local_info *) ((((long) (iface + 1)) + 3) & ~3); local->ap = (struct ap_data *) ((((long) (local + 1)) + 3) & ~3); local->dev = iface->dev = dev; iface->local = local; iface->type = HOSTAP_INTERFACE_MASTER; INIT_LIST_HEAD(&local->hostap_interfaces); local->hw_module = THIS_MODULE; #ifdef PRISM2_IO_DEBUG local->io_debug_enabled = 1; #endif /* PRISM2_IO_DEBUG */ local->func = funcs; local->func->cmd = hfa384x_cmd; local->func->read_regs = hfa384x_read_regs; local->func->get_rid = hfa384x_get_rid; local->func->set_rid = hfa384x_set_rid; local->func->hw_enable = prism2_hw_enable; local->func->hw_config = prism2_hw_config; local->func->hw_reset = prism2_hw_reset; local->func->hw_shutdown = prism2_hw_shutdown; local->func->reset_port = prism2_reset_port; local->func->schedule_reset = prism2_schedule_reset; #ifdef PRISM2_DOWNLOAD_SUPPORT local->func->read_aux_proc_ops = &prism2_download_aux_dump_proc_ops; local->func->download = prism2_download; #endif /* PRISM2_DOWNLOAD_SUPPORT */ local->func->tx = prism2_tx_80211; local->func->set_tim = prism2_set_tim; local->func->need_tx_headroom = 0; /* no need to add txdesc in * skb->data (FIX: maybe for DMA bus * mastering? */ local->mtu = mtu; rwlock_init(&local->iface_lock); spin_lock_init(&local->txfidlock); spin_lock_init(&local->cmdlock); spin_lock_init(&local->baplock); spin_lock_init(&local->lock); spin_lock_init(&local->irq_init_lock); mutex_init(&local->rid_bap_mtx); if (card_idx < 0 || card_idx >= MAX_PARM_DEVICES) card_idx = 0; local->card_idx = card_idx; len = strlen(essid); memcpy(local->essid, essid, len > MAX_SSID_LEN ? MAX_SSID_LEN : len); local->essid[MAX_SSID_LEN] = '\0'; i = GET_INT_PARM(iw_mode, card_idx); if ((i >= IW_MODE_ADHOC && i <= IW_MODE_REPEAT) || i == IW_MODE_MONITOR) { local->iw_mode = i; } else { printk(KERN_WARNING "prism2: Unknown iw_mode %d; using " "IW_MODE_MASTER\n", i); local->iw_mode = IW_MODE_MASTER; } local->channel = GET_INT_PARM(channel, card_idx); local->beacon_int = GET_INT_PARM(beacon_int, card_idx); local->dtim_period = GET_INT_PARM(dtim_period, card_idx); local->wds_max_connections = 16; local->tx_control = HFA384X_TX_CTRL_FLAGS; local->manual_retry_count = -1; local->rts_threshold = 2347; local->fragm_threshold = 2346; local->rssi_to_dBm = 100; /* default; to be overriden by * cnfDbmAdjust, if available */ local->auth_algs = PRISM2_AUTH_OPEN | PRISM2_AUTH_SHARED_KEY; local->sram_type = -1; local->scan_channel_mask = 0xffff; local->monitor_type = PRISM2_MONITOR_RADIOTAP; /* Initialize task queue structures */ INIT_WORK(&local->reset_queue, handle_reset_queue); INIT_WORK(&local->set_multicast_list_queue, hostap_set_multicast_list_queue); INIT_WORK(&local->set_tim_queue, handle_set_tim_queue); INIT_LIST_HEAD(&local->set_tim_list); spin_lock_init(&local->set_tim_lock); INIT_WORK(&local->comms_qual_update, handle_comms_qual_update); /* Initialize tasklets for handling hardware IRQ related operations * outside hw IRQ handler */ tasklet_setup(&local->bap_tasklet, hostap_bap_tasklet); tasklet_setup(&local->info_tasklet, hostap_info_tasklet); hostap_info_init(local); tasklet_setup(&local->rx_tasklet, hostap_rx_tasklet); skb_queue_head_init(&local->rx_list); tasklet_setup(&local->sta_tx_exc_tasklet, hostap_sta_tx_exc_tasklet); skb_queue_head_init(&local->sta_tx_exc_list); INIT_LIST_HEAD(&local->cmd_queue); init_waitqueue_head(&local->hostscan_wq); lib80211_crypt_info_init(&local->crypt_info, dev->name, &local->lock); timer_setup(&local->passive_scan_timer, hostap_passive_scan, 0); timer_setup(&local->tick_timer, hostap_tick_timer, 0); local->tick_timer.expires = jiffies + 2 * HZ; add_timer(&local->tick_timer); INIT_LIST_HEAD(&local->bss_list); hostap_setup_dev(dev, local, HOSTAP_INTERFACE_MASTER); dev->type = ARPHRD_IEEE80211; dev->header_ops = &hostap_80211_ops; rtnl_lock(); ret = dev_alloc_name(dev, "wifi%d"); SET_NETDEV_DEV(dev, sdev); if (ret >= 0) ret = register_netdevice(dev); prism2_set_lockdep_class(dev); rtnl_unlock(); if (ret < 0) { printk(KERN_WARNING "%s: register netdevice failed!\n", dev_info); goto fail; } printk(KERN_INFO "%s: Registered netdevice %s\n", dev_info, dev->name); hostap_init_data(local); return dev; fail: free_netdev(dev); return NULL; } static int hostap_hw_ready(struct net_device *dev) { struct hostap_interface *iface; struct local_info *local; iface = netdev_priv(dev); local = iface->local; local->ddev = hostap_add_interface(local, HOSTAP_INTERFACE_MAIN, 0, "", dev_template); if (local->ddev) { if (local->iw_mode == IW_MODE_INFRA || local->iw_mode == IW_MODE_ADHOC) { netif_carrier_off(local->dev); netif_carrier_off(local->ddev); } hostap_init_proc(local); #ifndef PRISM2_NO_PROCFS_DEBUG proc_create_single_data("registers", 0, local->proc, prism2_registers_proc_show, local); #endif /* PRISM2_NO_PROCFS_DEBUG */ hostap_init_ap_proc(local); return 0; } return -1; } static void prism2_free_local_data(struct net_device *dev) { struct hostap_tx_callback_info *tx_cb, *tx_cb_prev; int i; struct hostap_interface *iface; struct local_info *local; struct list_head *ptr, *n; if (dev == NULL) return; iface = netdev_priv(dev); local = iface->local; /* Unregister all netdevs before freeing local data. */ list_for_each_safe(ptr, n, &local->hostap_interfaces) { iface = list_entry(ptr, struct hostap_interface, list); if (iface->type == HOSTAP_INTERFACE_MASTER) { /* special handling for this interface below */ continue; } hostap_remove_interface(iface->dev, 0, 1); } unregister_netdev(local->dev); flush_work(&local->reset_queue); flush_work(&local->set_multicast_list_queue); flush_work(&local->set_tim_queue); #ifndef PRISM2_NO_STATION_MODES flush_work(&local->info_queue); #endif flush_work(&local->comms_qual_update); lib80211_crypt_info_free(&local->crypt_info); if (timer_pending(&local->passive_scan_timer)) del_timer(&local->passive_scan_timer); if (timer_pending(&local->tick_timer)) del_timer(&local->tick_timer); prism2_clear_cmd_queue(local); skb_queue_purge(&local->info_list); skb_queue_purge(&local->rx_list); skb_queue_purge(&local->sta_tx_exc_list); if (local->dev_enabled) prism2_callback(local, PRISM2_CALLBACK_DISABLE); if (local->ap != NULL) hostap_free_data(local->ap); #ifndef PRISM2_NO_PROCFS_DEBUG if (local->proc != NULL) remove_proc_entry("registers", local->proc); #endif /* PRISM2_NO_PROCFS_DEBUG */ hostap_remove_proc(local); tx_cb = local->tx_callback; while (tx_cb != NULL) { tx_cb_prev = tx_cb; tx_cb = tx_cb->next; kfree(tx_cb_prev); } hostap_set_hostapd(local, 0, 0); hostap_set_hostapd_sta(local, 0, 0); for (i = 0; i < PRISM2_FRAG_CACHE_LEN; i++) { if (local->frag_cache[i].skb != NULL) dev_kfree_skb(local->frag_cache[i].skb); } #ifdef PRISM2_DOWNLOAD_SUPPORT prism2_download_free_data(local->dl_pri); prism2_download_free_data(local->dl_sec); #endif /* PRISM2_DOWNLOAD_SUPPORT */ prism2_clear_set_tim_queue(local); list_for_each_safe(ptr, n, &local->bss_list) { struct hostap_bss_info *bss = list_entry(ptr, struct hostap_bss_info, list); kfree(bss); } kfree(local->pda); kfree(local->last_scan_results); kfree(local->generic_elem); free_netdev(local->dev); } #if defined(PRISM2_PCI) || defined(PRISM2_PCCARD) static void __maybe_unused prism2_suspend(struct net_device *dev) { struct hostap_interface *iface; struct local_info *local; union iwreq_data wrqu; iface = netdev_priv(dev); local = iface->local; /* Send disconnect event, e.g., to trigger reassociation after resume * if wpa_supplicant is used. */ memset(&wrqu, 0, sizeof(wrqu)); wrqu.ap_addr.sa_family = ARPHRD_ETHER; wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL); /* Disable hardware and firmware */ prism2_hw_shutdown(dev, 0); } #endif /* PRISM2_PCI || PRISM2_PCCARD */ /* These might at some point be compiled separately and used as separate * kernel modules or linked into one */ #ifdef PRISM2_DOWNLOAD_SUPPORT #include "hostap_download.c" #endif /* PRISM2_DOWNLOAD_SUPPORT */ #ifdef PRISM2_CALLBACK /* External hostap_callback.c file can be used to, e.g., blink activity led. * This can use platform specific code and must define prism2_callback() * function (if PRISM2_CALLBACK is not defined, these function calls are not * used. */ #include "hostap_callback.c" #endif /* PRISM2_CALLBACK */
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