| // 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 = 24; |
| skb_copy_from_linear_data(skb, &txdesc.frame_control, 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 */ |