diff options
Diffstat (limited to 'drivers/net/wireless/intersil/hostap/hostap_hw.c')
| -rw-r--r-- | drivers/net/wireless/intersil/hostap/hostap_hw.c | 3387 |
1 files changed, 0 insertions, 3387 deletions
diff --git a/drivers/net/wireless/intersil/hostap/hostap_hw.c b/drivers/net/wireless/intersil/hostap/hostap_hw.c deleted file mode 100644 index b74f4cb5d6..0000000000 --- a/drivers/net/wireless/intersil/hostap/hostap_hw.c +++ /dev/null @@ -1,3387 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Host AP (software wireless LAN access point) driver for - * Intersil Prism2/2.5/3. - * - * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen - * <j@w1.fi> - * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi> - * - * FIX: - * - there is currently no way of associating TX packets to correct wds device - * when TX Exc/OK event occurs, so all tx_packets and some - * tx_errors/tx_dropped are added to the main netdevice; using sw_support - * field in txdesc might be used to fix this (using Alloc event to increment - * tx_packets would need some further info in txfid table) - * - * Buffer Access Path (BAP) usage: - * Prism2 cards have two separate BAPs for accessing the card memory. These - * should allow concurrent access to two different frames and the driver - * previously used BAP0 for sending data and BAP1 for receiving data. - * However, there seems to be number of issues with concurrent access and at - * least one know hardware bug in using BAP0 and BAP1 concurrently with PCI - * Prism2.5. Therefore, the driver now only uses BAP0 for moving data between - * host and card memories. BAP0 accesses are protected with local->baplock - * (spin_lock_bh) to prevent concurrent use. - */ - - - -#include <asm/delay.h> -#include <linux/uaccess.h> - -#include <linux/slab.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/proc_fs.h> -#include <linux/seq_file.h> -#include <linux/if_arp.h> -#include <linux/delay.h> -#include <linux/random.h> -#include <linux/wait.h> -#include <linux/sched/signal.h> -#include <linux/rtnetlink.h> -#include <linux/wireless.h> -#include <net/iw_handler.h> -#include <net/lib80211.h> -#include <asm/irq.h> - -#include "hostap_80211.h" -#include "hostap.h" -#include "hostap_ap.h" - - -/* #define final_version */ - -static int mtu = 1500; -module_param(mtu, int, 0444); -MODULE_PARM_DESC(mtu, "Maximum transfer unit"); - -static int channel[MAX_PARM_DEVICES] = { 3, DEF_INTS }; -module_param_array(channel, int, NULL, 0444); -MODULE_PARM_DESC(channel, "Initial channel"); - -static char essid[33] = "test"; -module_param_string(essid, essid, sizeof(essid), 0444); -MODULE_PARM_DESC(essid, "Host AP's ESSID"); - -static int iw_mode[MAX_PARM_DEVICES] = { IW_MODE_MASTER, DEF_INTS }; -module_param_array(iw_mode, int, NULL, 0444); -MODULE_PARM_DESC(iw_mode, "Initial operation mode"); - -static int beacon_int[MAX_PARM_DEVICES] = { 100, DEF_INTS }; -module_param_array(beacon_int, int, NULL, 0444); -MODULE_PARM_DESC(beacon_int, "Beacon interval (1 = 1024 usec)"); - -static int dtim_period[MAX_PARM_DEVICES] = { 1, DEF_INTS }; -module_param_array(dtim_period, int, NULL, 0444); -MODULE_PARM_DESC(dtim_period, "DTIM period"); - -static char dev_template[16] = "wlan%d"; -module_param_string(dev_template, dev_template, sizeof(dev_template), 0444); -MODULE_PARM_DESC(dev_template, "Prefix for network device name (default: " - "wlan%d)"); - -#ifdef final_version -#define EXTRA_EVENTS_WTERR 0 -#else -/* check WTERR events (Wait Time-out) in development versions */ -#define EXTRA_EVENTS_WTERR HFA384X_EV_WTERR -#endif - -/* Events that will be using BAP0 */ -#define HFA384X_BAP0_EVENTS \ - (HFA384X_EV_TXEXC | HFA384X_EV_RX | HFA384X_EV_INFO | HFA384X_EV_TX) - -/* event mask, i.e., events that will result in an interrupt */ -#define HFA384X_EVENT_MASK \ - (HFA384X_BAP0_EVENTS | HFA384X_EV_ALLOC | HFA384X_EV_INFDROP | \ - HFA384X_EV_CMD | HFA384X_EV_TICK | \ - EXTRA_EVENTS_WTERR) - -/* Default TX control flags: use 802.11 headers and request interrupt for - * failed transmits. Frames that request ACK callback, will add - * _TX_OK flag and _ALT_RTRY flag may be used to select different retry policy. - */ -#define HFA384X_TX_CTRL_FLAGS \ - (HFA384X_TX_CTRL_802_11 | HFA384X_TX_CTRL_TX_EX) - - -/* ca. 1 usec */ -#define HFA384X_CMD_BUSY_TIMEOUT 5000 -#define HFA384X_BAP_BUSY_TIMEOUT 50000 - -/* ca. 10 usec */ -#define HFA384X_CMD_COMPL_TIMEOUT 20000 -#define HFA384X_DL_COMPL_TIMEOUT 1000000 - -/* Wait times for initialization; yield to other processes to avoid busy - * waiting for long time. */ -#define HFA384X_INIT_TIMEOUT (HZ / 2) /* 500 ms */ -#define HFA384X_ALLOC_COMPL_TIMEOUT (HZ / 20) /* 50 ms */ - - -static void prism2_hw_reset(struct net_device *dev); -static void prism2_check_sta_fw_version(local_info_t *local); - -#ifdef PRISM2_DOWNLOAD_SUPPORT -/* hostap_download.c */ -static const struct proc_ops prism2_download_aux_dump_proc_ops; -static u8 * prism2_read_pda(struct net_device *dev); -static int prism2_download(local_info_t *local, - struct prism2_download_param *param); -static void prism2_download_free_data(struct prism2_download_data *dl); -static int prism2_download_volatile(local_info_t *local, - struct prism2_download_data *param); -static int prism2_download_genesis(local_info_t *local, - struct prism2_download_data *param); -static int prism2_get_ram_size(local_info_t *local); -#endif /* PRISM2_DOWNLOAD_SUPPORT */ - - - - -#ifndef final_version -/* magic value written to SWSUPPORT0 reg. for detecting whether card is still - * present */ -#define HFA384X_MAGIC 0x8A32 -#endif - -static void hfa384x_read_regs(struct net_device *dev, - struct hfa384x_regs *regs) -{ - regs->cmd = HFA384X_INW(HFA384X_CMD_OFF); - regs->evstat = HFA384X_INW(HFA384X_EVSTAT_OFF); - regs->offset0 = HFA384X_INW(HFA384X_OFFSET0_OFF); - regs->offset1 = HFA384X_INW(HFA384X_OFFSET1_OFF); - regs->swsupport0 = HFA384X_INW(HFA384X_SWSUPPORT0_OFF); -} - - -/** - * __hostap_cmd_queue_free - Free Prism2 command queue entry (private) - * @local: pointer to private Host AP driver data - * @entry: Prism2 command queue entry to be freed - * @del_req: request the entry to be removed - * - * Internal helper function for freeing Prism2 command queue entries. - * Caller must have acquired local->cmdlock before calling this function. - */ -static inline void __hostap_cmd_queue_free(local_info_t *local, - struct hostap_cmd_queue *entry, - int del_req) -{ - if (del_req) { - entry->del_req = 1; - if (!list_empty(&entry->list)) { - list_del_init(&entry->list); - local->cmd_queue_len--; - } - } - - if (refcount_dec_and_test(&entry->usecnt) && entry->del_req) - kfree(entry); -} - - -/** - * hostap_cmd_queue_free - Free Prism2 command queue entry - * @local: pointer to private Host AP driver data - * @entry: Prism2 command queue entry to be freed - * @del_req: request the entry to be removed - * - * Free a Prism2 command queue entry. - */ -static inline void hostap_cmd_queue_free(local_info_t *local, - struct hostap_cmd_queue *entry, - int del_req) -{ - unsigned long flags; - - spin_lock_irqsave(&local->cmdlock, flags); - __hostap_cmd_queue_free(local, entry, del_req); - spin_unlock_irqrestore(&local->cmdlock, flags); -} - - -/** - * prism2_clear_cmd_queue - Free all pending Prism2 command queue entries - * @local: pointer to private Host AP driver data - */ -static void prism2_clear_cmd_queue(local_info_t *local) -{ - struct list_head *ptr, *n; - unsigned long flags; - struct hostap_cmd_queue *entry; - - spin_lock_irqsave(&local->cmdlock, flags); - list_for_each_safe(ptr, n, &local->cmd_queue) { - entry = list_entry(ptr, struct hostap_cmd_queue, list); - refcount_inc(&entry->usecnt); - printk(KERN_DEBUG "%s: removed pending cmd_queue entry " - "(type=%d, cmd=0x%04x, param0=0x%04x)\n", - local->dev->name, entry->type, entry->cmd, - entry->param0); - __hostap_cmd_queue_free(local, entry, 1); - } - if (local->cmd_queue_len) { - /* This should not happen; print debug message and clear - * queue length. */ - printk(KERN_DEBUG "%s: cmd_queue_len (%d) not zero after " - "flush\n", local->dev->name, local->cmd_queue_len); - local->cmd_queue_len = 0; - } - spin_unlock_irqrestore(&local->cmdlock, flags); -} - - -/** - * hfa384x_cmd_issue - Issue a Prism2 command to the hardware - * @dev: pointer to net_device - * @entry: Prism2 command queue entry to be issued - */ -static int hfa384x_cmd_issue(struct net_device *dev, - struct hostap_cmd_queue *entry) -{ - struct hostap_interface *iface; - local_info_t *local; - int tries; - u16 reg; - unsigned long flags; - - iface = netdev_priv(dev); - local = iface->local; - - if (local->func->card_present && !local->func->card_present(local)) - return -ENODEV; - - if (entry->issued) { - printk(KERN_DEBUG "%s: driver bug - re-issuing command @%p\n", - dev->name, entry); - } - - /* wait until busy bit is clear; this should always be clear since the - * commands are serialized */ - tries = HFA384X_CMD_BUSY_TIMEOUT; - while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) { - tries--; - udelay(1); - } -#ifndef final_version - if (tries != HFA384X_CMD_BUSY_TIMEOUT) { - prism2_io_debug_error(dev, 1); - printk(KERN_DEBUG "%s: hfa384x_cmd_issue: cmd reg was busy " - "for %d usec\n", dev->name, - HFA384X_CMD_BUSY_TIMEOUT - tries); - } -#endif - if (tries == 0) { - reg = HFA384X_INW(HFA384X_CMD_OFF); - prism2_io_debug_error(dev, 2); - printk(KERN_DEBUG "%s: hfa384x_cmd_issue - timeout - " - "reg=0x%04x\n", dev->name, reg); - return -ETIMEDOUT; - } - - /* write command */ - spin_lock_irqsave(&local->cmdlock, flags); - HFA384X_OUTW(entry->param0, HFA384X_PARAM0_OFF); - HFA384X_OUTW(entry->param1, HFA384X_PARAM1_OFF); - HFA384X_OUTW(entry->cmd, HFA384X_CMD_OFF); - entry->issued = 1; - spin_unlock_irqrestore(&local->cmdlock, flags); - - return 0; -} - - -/** - * hfa384x_cmd - Issue a Prism2 command and wait (sleep) for completion - * @dev: pointer to net_device - * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) - * @param0: value for Param0 register - * @param1: value for Param1 register (pointer; %NULL if not used) - * @resp0: pointer for Resp0 data or %NULL if Resp0 is not needed - * - * Issue given command (possibly after waiting in command queue) and sleep - * until the command is completed (or timed out or interrupted). This can be - * called only from user process context. - */ -static int hfa384x_cmd(struct net_device *dev, u16 cmd, u16 param0, - u16 *param1, u16 *resp0) -{ - struct hostap_interface *iface; - local_info_t *local; - int err, res, issue, issued = 0; - unsigned long flags; - struct hostap_cmd_queue *entry; - DECLARE_WAITQUEUE(wait, current); - - iface = netdev_priv(dev); - local = iface->local; - - if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN) { - printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n", - dev->name); - return -1; - } - - if (signal_pending(current)) - return -EINTR; - - entry = kzalloc(sizeof(*entry), GFP_ATOMIC); - if (entry == NULL) - return -ENOMEM; - - refcount_set(&entry->usecnt, 1); - entry->type = CMD_SLEEP; - entry->cmd = cmd; - entry->param0 = param0; - if (param1) - entry->param1 = *param1; - init_waitqueue_head(&entry->compl); - - /* prepare to wait for command completion event, but do not sleep yet - */ - add_wait_queue(&entry->compl, &wait); - set_current_state(TASK_INTERRUPTIBLE); - - spin_lock_irqsave(&local->cmdlock, flags); - issue = list_empty(&local->cmd_queue); - if (issue) - entry->issuing = 1; - list_add_tail(&entry->list, &local->cmd_queue); - local->cmd_queue_len++; - spin_unlock_irqrestore(&local->cmdlock, flags); - - err = 0; - if (!issue) - goto wait_completion; - - if (signal_pending(current)) - err = -EINTR; - - if (!err) { - if (hfa384x_cmd_issue(dev, entry)) - err = -ETIMEDOUT; - else - issued = 1; - } - - wait_completion: - if (!err && entry->type != CMD_COMPLETED) { - /* sleep until command is completed or timed out */ - res = schedule_timeout(2 * HZ); - } else - res = -1; - - if (!err && signal_pending(current)) - err = -EINTR; - - if (err && issued) { - /* the command was issued, so a CmdCompl event should occur - * soon; however, there's a pending signal and - * schedule_timeout() would be interrupted; wait a short period - * of time to avoid removing entry from the list before - * CmdCompl event */ - udelay(300); - } - - set_current_state(TASK_RUNNING); - remove_wait_queue(&entry->compl, &wait); - - /* If entry->list is still in the list, it must be removed - * first and in this case prism2_cmd_ev() does not yet have - * local reference to it, and the data can be kfree()'d - * here. If the command completion event is still generated, - * it will be assigned to next (possibly) pending command, but - * the driver will reset the card anyway due to timeout - * - * If the entry is not in the list prism2_cmd_ev() has a local - * reference to it, but keeps cmdlock as long as the data is - * needed, so the data can be kfree()'d here. */ - - /* FIX: if the entry->list is in the list, it has not been completed - * yet, so removing it here is somewhat wrong.. this could cause - * references to freed memory and next list_del() causing NULL pointer - * dereference.. it would probably be better to leave the entry in the - * list and the list should be emptied during hw reset */ - - spin_lock_irqsave(&local->cmdlock, flags); - if (!list_empty(&entry->list)) { - printk(KERN_DEBUG "%s: hfa384x_cmd: entry still in list? " - "(entry=%p, type=%d, res=%d)\n", dev->name, entry, - entry->type, res); - list_del_init(&entry->list); - local->cmd_queue_len--; - } - spin_unlock_irqrestore(&local->cmdlock, flags); - - if (err) { - printk(KERN_DEBUG "%s: hfa384x_cmd: interrupted; err=%d\n", - dev->name, err); - res = err; - goto done; - } - - if (entry->type != CMD_COMPLETED) { - u16 reg = HFA384X_INW(HFA384X_EVSTAT_OFF); - printk(KERN_DEBUG "%s: hfa384x_cmd: command was not " - "completed (res=%d, entry=%p, type=%d, cmd=0x%04x, " - "param0=0x%04x, EVSTAT=%04x INTEN=%04x)\n", dev->name, - res, entry, entry->type, entry->cmd, entry->param0, reg, - HFA384X_INW(HFA384X_INTEN_OFF)); - if (reg & HFA384X_EV_CMD) { - /* Command completion event is pending, but the - * interrupt was not delivered - probably an issue - * with pcmcia-cs configuration. */ - printk(KERN_WARNING "%s: interrupt delivery does not " - "seem to work\n", dev->name); - } - prism2_io_debug_error(dev, 3); - res = -ETIMEDOUT; - goto done; - } - - if (resp0 != NULL) - *resp0 = entry->resp0; -#ifndef final_version - if (entry->res) { - printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x, " - "resp0=0x%04x\n", - dev->name, cmd, entry->res, entry->resp0); - } -#endif /* final_version */ - - res = entry->res; - done: - hostap_cmd_queue_free(local, entry, 1); - return res; -} - - -/** - * hfa384x_cmd_callback - Issue a Prism2 command; callback when completed - * @dev: pointer to net_device - * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) - * @param0: value for Param0 register - * @callback: command completion callback function (%NULL = no callback) - * @context: context data to be given to the callback function - * - * Issue given command (possibly after waiting in command queue) and use - * callback function to indicate command completion. This can be called both - * from user and interrupt context. The callback function will be called in - * hardware IRQ context. It can be %NULL, when no function is called when - * command is completed. - */ -static int hfa384x_cmd_callback(struct net_device *dev, u16 cmd, u16 param0, - void (*callback)(struct net_device *dev, - long context, u16 resp0, - u16 status), - long context) -{ - struct hostap_interface *iface; - local_info_t *local; - int issue, ret; - unsigned long flags; - struct hostap_cmd_queue *entry; - - iface = netdev_priv(dev); - local = iface->local; - - if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN + 2) { - printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n", - dev->name); - return -1; - } - - entry = kzalloc(sizeof(*entry), GFP_ATOMIC); - if (entry == NULL) - return -ENOMEM; - - refcount_set(&entry->usecnt, 1); - entry->type = CMD_CALLBACK; - entry->cmd = cmd; - entry->param0 = param0; - entry->callback = callback; - entry->context = context; - - spin_lock_irqsave(&local->cmdlock, flags); - issue = list_empty(&local->cmd_queue); - if (issue) - entry->issuing = 1; - list_add_tail(&entry->list, &local->cmd_queue); - local->cmd_queue_len++; - spin_unlock_irqrestore(&local->cmdlock, flags); - - if (issue && hfa384x_cmd_issue(dev, entry)) - ret = -ETIMEDOUT; - else - ret = 0; - - hostap_cmd_queue_free(local, entry, ret); - - return ret; -} - - -/** - * __hfa384x_cmd_no_wait - Issue a Prism2 command (private) - * @dev: pointer to net_device - * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) - * @param0: value for Param0 register - * @io_debug_num: I/O debug error number - * - * Shared helper function for hfa384x_cmd_wait() and hfa384x_cmd_no_wait(). - */ -static int __hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, u16 param0, - int io_debug_num) -{ - int tries; - u16 reg; - - /* wait until busy bit is clear; this should always be clear since the - * commands are serialized */ - tries = HFA384X_CMD_BUSY_TIMEOUT; - while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) { - tries--; - udelay(1); - } - if (tries == 0) { - reg = HFA384X_INW(HFA384X_CMD_OFF); - prism2_io_debug_error(dev, io_debug_num); - printk(KERN_DEBUG "%s: __hfa384x_cmd_no_wait(%d) - timeout - " - "reg=0x%04x\n", dev->name, io_debug_num, reg); - return -ETIMEDOUT; - } - - /* write command */ - HFA384X_OUTW(param0, HFA384X_PARAM0_OFF); - HFA384X_OUTW(cmd, HFA384X_CMD_OFF); - - return 0; -} - - -/** - * hfa384x_cmd_wait - Issue a Prism2 command and busy wait for completion - * @dev: pointer to net_device - * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) - * @param0: value for Param0 register - */ -static int hfa384x_cmd_wait(struct net_device *dev, u16 cmd, u16 param0) -{ - int res, tries; - u16 reg; - - res = __hfa384x_cmd_no_wait(dev, cmd, param0, 4); - if (res) - return res; - - /* wait for command completion */ - if ((cmd & HFA384X_CMDCODE_MASK) == HFA384X_CMDCODE_DOWNLOAD) - tries = HFA384X_DL_COMPL_TIMEOUT; - else - tries = HFA384X_CMD_COMPL_TIMEOUT; - - while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) && - tries > 0) { - tries--; - udelay(10); - } - if (tries == 0) { - reg = HFA384X_INW(HFA384X_EVSTAT_OFF); - prism2_io_debug_error(dev, 5); - printk(KERN_DEBUG "%s: hfa384x_cmd_wait - timeout2 - " - "reg=0x%04x\n", dev->name, reg); - return -ETIMEDOUT; - } - - res = (HFA384X_INW(HFA384X_STATUS_OFF) & - (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | BIT(9) | - BIT(8))) >> 8; -#ifndef final_version - if (res) { - printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x\n", - dev->name, cmd, res); - } -#endif - - HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); - - return res; -} - - -/** - * hfa384x_cmd_no_wait - Issue a Prism2 command; do not wait for completion - * @dev: pointer to net_device - * @cmd: Prism2 command code (HFA384X_CMD_CODE_*) - * @param0: value for Param0 register - */ -static inline int hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, - u16 param0) -{ - return __hfa384x_cmd_no_wait(dev, cmd, param0, 6); -} - - -/** - * prism2_cmd_ev - Prism2 command completion event handler - * @dev: pointer to net_device - * - * Interrupt handler for command completion events. Called by the main - * interrupt handler in hardware IRQ context. Read Resp0 and status registers - * from the hardware and ACK the event. Depending on the issued command type - * either wake up the sleeping process that is waiting for command completion - * or call the callback function. Issue the next command, if one is pending. - */ -static void prism2_cmd_ev(struct net_device *dev) -{ - struct hostap_interface *iface; - local_info_t *local; - struct hostap_cmd_queue *entry = NULL; - - iface = netdev_priv(dev); - local = iface->local; - - spin_lock(&local->cmdlock); - if (!list_empty(&local->cmd_queue)) { - entry = list_entry(local->cmd_queue.next, - struct hostap_cmd_queue, list); - refcount_inc(&entry->usecnt); - list_del_init(&entry->list); - local->cmd_queue_len--; - - if (!entry->issued) { - printk(KERN_DEBUG "%s: Command completion event, but " - "cmd not issued\n", dev->name); - __hostap_cmd_queue_free(local, entry, 1); - entry = NULL; - } - } - spin_unlock(&local->cmdlock); - - if (!entry) { - HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); - printk(KERN_DEBUG "%s: Command completion event, but no " - "pending commands\n", dev->name); - return; - } - - entry->resp0 = HFA384X_INW(HFA384X_RESP0_OFF); - entry->res = (HFA384X_INW(HFA384X_STATUS_OFF) & - (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | - BIT(9) | BIT(8))) >> 8; - HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); - - /* TODO: rest of the CmdEv handling could be moved to tasklet */ - if (entry->type == CMD_SLEEP) { - entry->type = CMD_COMPLETED; - wake_up_interruptible(&entry->compl); - } else if (entry->type == CMD_CALLBACK) { - if (entry->callback) - entry->callback(dev, entry->context, entry->resp0, - entry->res); - } else { - printk(KERN_DEBUG "%s: Invalid command completion type %d\n", - dev->name, entry->type); - } - hostap_cmd_queue_free(local, entry, 1); - - /* issue next command, if pending */ - entry = NULL; - spin_lock(&local->cmdlock); - if (!list_empty(&local->cmd_queue)) { - entry = list_entry(local->cmd_queue.next, - struct hostap_cmd_queue, list); - if (entry->issuing) { - /* hfa384x_cmd() has already started issuing this - * command, so do not start here */ - entry = NULL; - } - if (entry) - refcount_inc(&entry->usecnt); - } - spin_unlock(&local->cmdlock); - - if (entry) { - /* issue next command; if command issuing fails, remove the - * entry from cmd_queue */ - int res = hfa384x_cmd_issue(dev, entry); - spin_lock(&local->cmdlock); - __hostap_cmd_queue_free(local, entry, res); - spin_unlock(&local->cmdlock); - } -} - - -static int hfa384x_wait_offset(struct net_device *dev, u16 o_off) -{ - int tries = HFA384X_BAP_BUSY_TIMEOUT; - int res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY; - - while (res && tries > 0) { - tries--; - udelay(1); - res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY; - } - return res; -} - - -/* Offset must be even */ -static int hfa384x_setup_bap(struct net_device *dev, u16 bap, u16 id, - int offset) -{ - u16 o_off, s_off; - int ret = 0; - - if (offset % 2 || bap > 1) - return -EINVAL; - - if (bap == BAP1) { - o_off = HFA384X_OFFSET1_OFF; - s_off = HFA384X_SELECT1_OFF; - } else { - o_off = HFA384X_OFFSET0_OFF; - s_off = HFA384X_SELECT0_OFF; - } - - if (hfa384x_wait_offset(dev, o_off)) { - prism2_io_debug_error(dev, 7); - printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout before\n", - dev->name); - ret = -ETIMEDOUT; - goto out; - } - - HFA384X_OUTW(id, s_off); - HFA384X_OUTW(offset, o_off); - - if (hfa384x_wait_offset(dev, o_off)) { - prism2_io_debug_error(dev, 8); - printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout after\n", - dev->name); - ret = -ETIMEDOUT; - goto out; - } -#ifndef final_version - if (HFA384X_INW(o_off) & HFA384X_OFFSET_ERR) { - prism2_io_debug_error(dev, 9); - printk(KERN_DEBUG "%s: hfa384x_setup_bap - offset error " - "(%d,0x04%x,%d); reg=0x%04x\n", - dev->name, bap, id, offset, HFA384X_INW(o_off)); - ret = -EINVAL; - } -#endif - - out: - return ret; -} - - -static int hfa384x_get_rid(struct net_device *dev, u16 rid, void *buf, int len, - int exact_len) -{ - struct hostap_interface *iface; - local_info_t *local; - int res, rlen = 0; - struct hfa384x_rid_hdr rec; - - iface = netdev_priv(dev); - local = iface->local; - - if (local->no_pri) { - printk(KERN_DEBUG "%s: cannot get RID %04x (len=%d) - no PRI " - "f/w\n", dev->name, rid, len); - return -ENOTTY; /* Well.. not really correct, but return - * something unique enough.. */ - } - - if ((local->func->card_present && !local->func->card_present(local)) || - local->hw_downloading) - return -ENODEV; - - res = mutex_lock_interruptible(&local->rid_bap_mtx); - if (res) - return res; - - res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS, rid, NULL, NULL); - if (res) { - printk(KERN_DEBUG "%s: hfa384x_get_rid: CMDCODE_ACCESS failed " - "(res=%d, rid=%04x, len=%d)\n", - dev->name, res, rid, len); - mutex_unlock(&local->rid_bap_mtx); - return res; - } - - spin_lock_bh(&local->baplock); - - res = hfa384x_setup_bap(dev, BAP0, rid, 0); - if (res) - goto unlock; - - res = hfa384x_from_bap(dev, BAP0, &rec, sizeof(rec)); - if (res) - goto unlock; - - if (le16_to_cpu(rec.len) == 0) { - /* RID not available */ - res = -ENODATA; - goto unlock; - } - - rlen = (le16_to_cpu(rec.len) - 1) * 2; - if (exact_len && rlen != len) { - printk(KERN_DEBUG "%s: hfa384x_get_rid - RID len mismatch: " - "rid=0x%04x, len=%d (expected %d)\n", - dev->name, rid, rlen, len); - res = -ENODATA; - } - - res = hfa384x_from_bap(dev, BAP0, buf, len); - -unlock: - spin_unlock_bh(&local->baplock); - mutex_unlock(&local->rid_bap_mtx); - - if (res) { - if (res != -ENODATA) - printk(KERN_DEBUG "%s: hfa384x_get_rid (rid=%04x, " - "len=%d) - failed - res=%d\n", dev->name, rid, - len, res); - if (res == -ETIMEDOUT) - prism2_hw_reset(dev); - return res; - } - - return rlen; -} - - -static int hfa384x_set_rid(struct net_device *dev, u16 rid, void *buf, int len) -{ - struct hostap_interface *iface; - local_info_t *local; - struct hfa384x_rid_hdr rec; - int res; - - iface = netdev_priv(dev); - local = iface->local; - - if (local->no_pri) { - printk(KERN_DEBUG "%s: cannot set RID %04x (len=%d) - no PRI " - "f/w\n", dev->name, rid, len); - return -ENOTTY; /* Well.. not really correct, but return - * something unique enough.. */ - } - - if ((local->func->card_present && !local->func->card_present(local)) || - local->hw_downloading) - return -ENODEV; - - rec.rid = cpu_to_le16(rid); - /* RID len in words and +1 for rec.rid */ - rec.len = cpu_to_le16(len / 2 + len % 2 + 1); - - res = mutex_lock_interruptible(&local->rid_bap_mtx); - if (res) - return res; - - spin_lock_bh(&local->baplock); - res = hfa384x_setup_bap(dev, BAP0, rid, 0); - if (!res) - res = hfa384x_to_bap(dev, BAP0, &rec, sizeof(rec)); - if (!res) - res = hfa384x_to_bap(dev, BAP0, buf, len); - spin_unlock_bh(&local->baplock); - - if (res) { - printk(KERN_DEBUG "%s: hfa384x_set_rid (rid=%04x, len=%d) - " - "failed - res=%d\n", dev->name, rid, len, res); - mutex_unlock(&local->rid_bap_mtx); - return res; - } - - res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS_WRITE, rid, NULL, NULL); - mutex_unlock(&local->rid_bap_mtx); - - if (res) { - printk(KERN_DEBUG "%s: hfa384x_set_rid: CMDCODE_ACCESS_WRITE " - "failed (res=%d, rid=%04x, len=%d)\n", - dev->name, res, rid, len); - - if (res == -ETIMEDOUT) - prism2_hw_reset(dev); - } - - return res; -} - - -static void hfa384x_disable_interrupts(struct net_device *dev) -{ - /* disable interrupts and clear event status */ - HFA384X_OUTW(0, HFA384X_INTEN_OFF); - HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); -} - - -static void hfa384x_enable_interrupts(struct net_device *dev) -{ - /* ack pending events and enable interrupts from selected events */ - HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); - HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF); -} - - -static void hfa384x_events_no_bap0(struct net_device *dev) -{ - HFA384X_OUTW(HFA384X_EVENT_MASK & ~HFA384X_BAP0_EVENTS, - HFA384X_INTEN_OFF); -} - - -static void hfa384x_events_all(struct net_device *dev) -{ - HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF); -} - - -static void hfa384x_events_only_cmd(struct net_device *dev) -{ - HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_INTEN_OFF); -} - - -static u16 hfa384x_allocate_fid(struct net_device *dev, int len) -{ - u16 fid; - unsigned long delay; - - /* FIX: this could be replace with hfa384x_cmd() if the Alloc event - * below would be handled like CmdCompl event (sleep here, wake up from - * interrupt handler */ - if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_ALLOC, len)) { - printk(KERN_DEBUG "%s: cannot allocate fid, len=%d\n", - dev->name, len); - return 0xffff; - } - - delay = jiffies + HFA384X_ALLOC_COMPL_TIMEOUT; - while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC) && - time_before(jiffies, delay)) - yield(); - if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC)) { - printk("%s: fid allocate, len=%d - timeout\n", dev->name, len); - return 0xffff; - } - - fid = HFA384X_INW(HFA384X_ALLOCFID_OFF); - HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF); - - return fid; -} - - -static int prism2_reset_port(struct net_device *dev) -{ - struct hostap_interface *iface; - local_info_t *local; - int res; - - iface = netdev_priv(dev); - local = iface->local; - - if (!local->dev_enabled) - return 0; - - res = hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, - NULL, NULL); - if (res) - printk(KERN_DEBUG "%s: reset port failed to disable port\n", - dev->name); - else { - res = hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, - NULL, NULL); - if (res) - printk(KERN_DEBUG "%s: reset port failed to enable " - "port\n", dev->name); - } - - /* It looks like at least some STA firmware versions reset - * fragmentation threshold back to 2346 after enable command. Restore - * the configured value, if it differs from this default. */ - if (local->fragm_threshold != 2346 && - hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, - local->fragm_threshold)) { - printk(KERN_DEBUG "%s: failed to restore fragmentation " - "threshold (%d) after Port0 enable\n", - dev->name, local->fragm_threshold); - } - - /* Some firmwares lose antenna selection settings on reset */ - (void) hostap_set_antsel(local); - - return res; -} - - -static int prism2_get_version_info(struct net_device *dev, u16 rid, - const char *txt) -{ - struct hfa384x_comp_ident comp; - struct hostap_interface *iface; - local_info_t *local; - - iface = netdev_priv(dev); - local = iface->local; - - if (local->no_pri) { - /* PRI f/w not yet available - cannot read RIDs */ - return -1; - } - if (hfa384x_get_rid(dev, rid, &comp, sizeof(comp), 1) < 0) { - printk(KERN_DEBUG "Could not get RID for component %s\n", txt); - return -1; - } - - printk(KERN_INFO "%s: %s: id=0x%02x v%d.%d.%d\n", dev->name, txt, - __le16_to_cpu(comp.id), __le16_to_cpu(comp.major), - __le16_to_cpu(comp.minor), __le16_to_cpu(comp.variant)); - return 0; -} - - -static int prism2_setup_rids(struct net_device *dev) -{ - struct hostap_interface *iface; - local_info_t *local; - __le16 tmp; - int ret = 0; - - iface = netdev_priv(dev); - local = iface->local; - - hostap_set_word(dev, HFA384X_RID_TICKTIME, 2000); - - if (!local->fw_ap) { - u16 tmp1 = hostap_get_porttype(local); - ret = hostap_set_word(dev, HFA384X_RID_CNFPORTTYPE, tmp1); - if (ret) { - printk("%s: Port type setting to %d failed\n", - dev->name, tmp1); - goto fail; - } - } - - /* Setting SSID to empty string seems to kill the card in Host AP mode - */ - if (local->iw_mode != IW_MODE_MASTER || local->essid[0] != '\0') { - ret = hostap_set_string(dev, HFA384X_RID_CNFOWNSSID, - local->essid); - if (ret) { - printk("%s: AP own SSID setting failed\n", dev->name); - goto fail; - } - } - - ret = hostap_set_word(dev, HFA384X_RID_CNFMAXDATALEN, - PRISM2_DATA_MAXLEN); - if (ret) { - printk("%s: MAC data length setting to %d failed\n", - dev->name, PRISM2_DATA_MAXLEN); - goto fail; - } - - if (hfa384x_get_rid(dev, HFA384X_RID_CHANNELLIST, &tmp, 2, 1) < 0) { - printk("%s: Channel list read failed\n", dev->name); - ret = -EINVAL; - goto fail; - } - local->channel_mask = le16_to_cpu(tmp); - - if (local->channel < 1 || local->channel > 14 || - !(local->channel_mask & (1 << (local->channel - 1)))) { - printk(KERN_WARNING "%s: Channel setting out of range " - "(%d)!\n", dev->name, local->channel); - ret = -EBUSY; - goto fail; - } - - ret = hostap_set_word(dev, HFA384X_RID_CNFOWNCHANNEL, local->channel); - if (ret) { - printk("%s: Channel setting to %d failed\n", - dev->name, local->channel); - goto fail; - } - - ret = hostap_set_word(dev, HFA384X_RID_CNFBEACONINT, - local->beacon_int); - if (ret) { - printk("%s: Beacon interval setting to %d failed\n", - dev->name, local->beacon_int); - /* this may fail with Symbol/Lucent firmware */ - if (ret == -ETIMEDOUT) - goto fail; - } - - ret = hostap_set_word(dev, HFA384X_RID_CNFOWNDTIMPERIOD, - local->dtim_period); - if (ret) { - printk("%s: DTIM period setting to %d failed\n", - dev->name, local->dtim_period); - /* this may fail with Symbol/Lucent firmware */ - if (ret == -ETIMEDOUT) - goto fail; - } - - ret = hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE, - local->is_promisc); - if (ret) - printk(KERN_INFO "%s: Setting promiscuous mode (%d) failed\n", - dev->name, local->is_promisc); - - if (!local->fw_ap) { - ret = hostap_set_string(dev, HFA384X_RID_CNFDESIREDSSID, - local->essid); - if (ret) { - printk("%s: Desired SSID setting failed\n", dev->name); - goto fail; - } - } - - /* Setup TXRateControl, defaults to allow use of 1, 2, 5.5, and - * 11 Mbps in automatic TX rate fallback and 1 and 2 Mbps as basic - * rates */ - if (local->tx_rate_control == 0) { - local->tx_rate_control = - HFA384X_RATES_1MBPS | - HFA384X_RATES_2MBPS | - HFA384X_RATES_5MBPS | - HFA384X_RATES_11MBPS; - } - if (local->basic_rates == 0) - local->basic_rates = HFA384X_RATES_1MBPS | HFA384X_RATES_2MBPS; - - if (!local->fw_ap) { - ret = hostap_set_word(dev, HFA384X_RID_TXRATECONTROL, - local->tx_rate_control); - if (ret) { - printk("%s: TXRateControl setting to %d failed\n", - dev->name, local->tx_rate_control); - goto fail; - } - - ret = hostap_set_word(dev, HFA384X_RID_CNFSUPPORTEDRATES, - local->tx_rate_control); - if (ret) { - printk("%s: cnfSupportedRates setting to %d failed\n", - dev->name, local->tx_rate_control); - } - - ret = hostap_set_word(dev, HFA384X_RID_CNFBASICRATES, - local->basic_rates); - if (ret) { - printk("%s: cnfBasicRates setting to %d failed\n", - dev->name, local->basic_rates); - } - - ret = hostap_set_word(dev, HFA384X_RID_CREATEIBSS, 1); - if (ret) { - printk("%s: Create IBSS setting to 1 failed\n", - dev->name); - } - } - - if (local->name_set) - (void) hostap_set_string(dev, HFA384X_RID_CNFOWNNAME, - local->name); - - if (hostap_set_encryption(local)) { - printk(KERN_INFO "%s: could not configure encryption\n", - dev->name); - } - - (void) hostap_set_antsel(local); - - if (hostap_set_roaming(local)) { - printk(KERN_INFO "%s: could not set host roaming\n", - dev->name); - } - - if (local->sta_fw_ver >= PRISM2_FW_VER(1,6,3) && - hostap_set_word(dev, HFA384X_RID_CNFENHSECURITY, local->enh_sec)) - printk(KERN_INFO "%s: cnfEnhSecurity setting to 0x%x failed\n", - dev->name, local->enh_sec); - - /* 32-bit tallies were added in STA f/w 0.8.0, but they were apparently - * not working correctly (last seven counters report bogus values). - * This has been fixed in 0.8.2, so enable 32-bit tallies only - * beginning with that firmware version. Another bug fix for 32-bit - * tallies in 1.4.0; should 16-bit tallies be used for some other - * versions, too? */ - if (local->sta_fw_ver >= PRISM2_FW_VER(0,8,2)) { - if (hostap_set_word(dev, HFA384X_RID_CNFTHIRTY2TALLY, 1)) { - printk(KERN_INFO "%s: cnfThirty2Tally setting " - "failed\n", dev->name); - local->tallies32 = 0; - } else - local->tallies32 = 1; - } else - local->tallies32 = 0; - - hostap_set_auth_algs(local); - - if (hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD, - local->fragm_threshold)) { - printk(KERN_INFO "%s: setting FragmentationThreshold to %d " - "failed\n", dev->name, local->fragm_threshold); - } - - if (hostap_set_word(dev, HFA384X_RID_RTSTHRESHOLD, - local->rts_threshold)) { - printk(KERN_INFO "%s: setting RTSThreshold to %d failed\n", - dev->name, local->rts_threshold); - } - - if (local->manual_retry_count >= 0 && - hostap_set_word(dev, HFA384X_RID_CNFALTRETRYCOUNT, - local->manual_retry_count)) { - printk(KERN_INFO "%s: setting cnfAltRetryCount to %d failed\n", - dev->name, local->manual_retry_count); - } - - if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1) && - hfa384x_get_rid(dev, HFA384X_RID_CNFDBMADJUST, &tmp, 2, 1) == 2) { - local->rssi_to_dBm = le16_to_cpu(tmp); - } - - if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->wpa && - hostap_set_word(dev, HFA384X_RID_SSNHANDLINGMODE, 1)) { - printk(KERN_INFO "%s: setting ssnHandlingMode to 1 failed\n", - dev->name); - } - - if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->generic_elem && - hfa384x_set_rid(dev, HFA384X_RID_GENERICELEMENT, - local->generic_elem, local->generic_elem_len)) { - printk(KERN_INFO "%s: setting genericElement failed\n", - dev->name); - } - - fail: - return ret; -} - - -static int prism2_hw_init(struct net_device *dev, int initial) -{ - struct hostap_interface *iface; - local_info_t *local; - int ret, first = 1; - unsigned long start, delay; - - PDEBUG(DEBUG_FLOW, "prism2_hw_init()\n"); - - iface = netdev_priv(dev); - local = iface->local; - - clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits); - - init: - /* initialize HFA 384x */ - ret = hfa384x_cmd_no_wait(dev, HFA384X_CMDCODE_INIT, 0); - if (ret) { - printk(KERN_INFO "%s: first command failed - assuming card " - "does not have primary firmware\n", dev_info); - } - - if (first && (HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) { - /* EvStat has Cmd bit set in some cases, so retry once if no - * wait was needed */ - HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); - printk(KERN_DEBUG "%s: init command completed too quickly - " - "retrying\n", dev->name); - first = 0; - goto init; - } - - start = jiffies; - delay = jiffies + HFA384X_INIT_TIMEOUT; - while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) && - time_before(jiffies, delay)) - yield(); - if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) { - printk(KERN_DEBUG "%s: assuming no Primary image in " - "flash - card initialization not completed\n", - dev_info); - local->no_pri = 1; -#ifdef PRISM2_DOWNLOAD_SUPPORT - if (local->sram_type == -1) - local->sram_type = prism2_get_ram_size(local); -#endif /* PRISM2_DOWNLOAD_SUPPORT */ - return 1; - } - local->no_pri = 0; - printk(KERN_DEBUG "prism2_hw_init: initialized in %lu ms\n", - (jiffies - start) * 1000 / HZ); - HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF); - return 0; -} - - -static int prism2_hw_init2(struct net_device *dev, int initial) -{ - struct hostap_interface *iface; - local_info_t *local; - int i; - - iface = netdev_priv(dev); - local = iface->local; - -#ifdef PRISM2_DOWNLOAD_SUPPORT - kfree(local->pda); - if (local->no_pri) - local->pda = NULL; - else - local->pda = prism2_read_pda(dev); -#endif /* PRISM2_DOWNLOAD_SUPPORT */ - - hfa384x_disable_interrupts(dev); - -#ifndef final_version - HFA384X_OUTW(HFA384X_MAGIC, HFA384X_SWSUPPORT0_OFF); - if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) { - printk("SWSUPPORT0 write/read failed: %04X != %04X\n", - HFA384X_INW(HFA384X_SWSUPPORT0_OFF), HFA384X_MAGIC); - goto failed; - } -#endif - - if (initial || local->pri_only) { - hfa384x_events_only_cmd(dev); - /* get card version information */ - if (prism2_get_version_info(dev, HFA384X_RID_NICID, "NIC") || - prism2_get_version_info(dev, HFA384X_RID_PRIID, "PRI")) { - hfa384x_disable_interrupts(dev); - goto failed; - } - - if (prism2_get_version_info(dev, HFA384X_RID_STAID, "STA")) { - printk(KERN_DEBUG "%s: Failed to read STA f/w version " - "- only Primary f/w present\n", dev->name); - local->pri_only = 1; - return 0; - } - local->pri_only = 0; - hfa384x_disable_interrupts(dev); - } - - /* FIX: could convert allocate_fid to use sleeping CmdCompl wait and - * enable interrupts before this. This would also require some sort of - * sleeping AllocEv waiting */ - - /* allocate TX FIDs */ - local->txfid_len = PRISM2_TXFID_LEN; - for (i = 0; i < PRISM2_TXFID_COUNT; i++) { - local->txfid[i] = hfa384x_allocate_fid(dev, local->txfid_len); - if (local->txfid[i] == 0xffff && local->txfid_len > 1600) { - local->txfid[i] = hfa384x_allocate_fid(dev, 1600); - if (local->txfid[i] != 0xffff) { - printk(KERN_DEBUG "%s: Using shorter TX FID " - "(1600 bytes)\n", dev->name); - local->txfid_len = 1600; - } - } - if (local->txfid[i] == 0xffff) - goto failed; - local->intransmitfid[i] = PRISM2_TXFID_EMPTY; - } - - hfa384x_events_only_cmd(dev); - - if (initial) { - u8 addr[ETH_ALEN] = {}; - struct list_head *ptr; - - prism2_check_sta_fw_version(local); - - if (hfa384x_get_rid(dev, HFA384X_RID_CNFOWNMACADDR, - addr, ETH_ALEN, 1) < 0) { - printk("%s: could not get own MAC address\n", - dev->name); - } - eth_hw_addr_set(dev, addr); - list_for_each(ptr, &local->hostap_interfaces) { - iface = list_entry(ptr, struct hostap_interface, list); - eth_hw_addr_inherit(iface->dev, dev); - } - } else if (local->fw_ap) - prism2_check_sta_fw_version(local); - - prism2_setup_rids(dev); - - /* MAC is now configured, but port 0 is not yet enabled */ - return 0; - - failed: - if (!local->no_pri) - printk(KERN_WARNING "%s: Initialization failed\n", dev_info); - return 1; -} - - -static int prism2_hw_enable(struct net_device *dev, int initial) -{ - struct hostap_interface *iface; - local_info_t *local; - int was_resetting; - - iface = netdev_priv(dev); - local = iface->local; - was_resetting = local->hw_resetting; - - if (hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, NULL, NULL)) { - printk("%s: MAC port 0 enabling failed\n", dev->name); - return 1; - } - - local->hw_ready = 1; - local->hw_reset_tries = 0; - local->hw_resetting = 0; - hfa384x_enable_interrupts(dev); - - /* at least D-Link DWL-650 seems to require additional port reset - * before it starts acting as an AP, so reset port automatically - * here just in case */ - if (initial && prism2_reset_port(dev)) { - printk("%s: MAC port 0 resetting failed\n", dev->name); - return 1; - } - - if (was_resetting && netif_queue_stopped(dev)) { - /* If hw_reset() was called during pending transmit, netif - * queue was stopped. Wake it up now since the wlan card has - * been resetted. */ - netif_wake_queue(dev); - } - - return 0; -} - - -static int prism2_hw_config(struct net_device *dev, int initial) -{ - struct hostap_interface *iface; - local_info_t *local; - - iface = netdev_priv(dev); - local = iface->local; - - if (local->hw_downloading) - return 1; - - if (prism2_hw_init(dev, initial)) { - return local->no_pri ? 0 : 1; - } - - if (prism2_hw_init2(dev, initial)) - return 1; - - /* Enable firmware if secondary image is loaded and at least one of the - * netdevices is up. */ - if (!local->pri_only && - (initial == 0 || (initial == 2 && local->num_dev_open > 0))) { - if (!local->dev_enabled) - prism2_callback(local, PRISM2_CALLBACK_ENABLE); - local->dev_enabled = 1; - return prism2_hw_enable(dev, initial); - } - - return 0; -} - - -static void prism2_hw_shutdown(struct net_device *dev, int no_disable) -{ - struct hostap_interface *iface; - local_info_t *local; - - iface = netdev_priv(dev); - local = iface->local; - - /* Allow only command completion events during disable */ - hfa384x_events_only_cmd(dev); - - local->hw_ready = 0; - if (local->dev_enabled) - prism2_callback(local, PRISM2_CALLBACK_DISABLE); - local->dev_enabled = 0; - - if (local->func->card_present && !local->func->card_present(local)) { - printk(KERN_DEBUG "%s: card already removed or not configured " - "during shutdown\n", dev->name); - return; - } - - if ((no_disable & HOSTAP_HW_NO_DISABLE) == 0 && - hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, NULL, NULL)) - printk(KERN_WARNING "%s: Shutdown failed\n", dev_info); - - hfa384x_disable_interrupts(dev); - - if (no_disable & HOSTAP_HW_ENABLE_CMDCOMPL) - hfa384x_events_only_cmd(dev); - else - prism2_clear_cmd_queue(local); -} - - -static void prism2_hw_reset(struct net_device *dev) -{ - struct hostap_interface *iface; - local_info_t *local; - -#if 0 - static long last_reset = 0; - - /* do not reset card more than once per second to avoid ending up in a - * busy loop resetting the card */ - if (time_before_eq(jiffies, last_reset + HZ)) - return; - last_reset = jiffies; -#endif - - iface = netdev_priv(dev); - local = iface->local; - - if (local->hw_downloading) - return; - - if (local->hw_resetting) { - printk(KERN_WARNING "%s: %s: already resetting card - " - "ignoring reset request\n", dev_info, dev->name); - return; - } - - local->hw_reset_tries++; - if (local->hw_reset_tries > 10) { - printk(KERN_WARNING "%s: too many reset tries, skipping\n", - dev->name); - return; - } - - printk(KERN_WARNING "%s: %s: resetting card\n", dev_info, dev->name); - hfa384x_disable_interrupts(dev); - local->hw_resetting = 1; - if (local->func->cor_sreset) { - /* Host system seems to hang in some cases with high traffic - * load or shared interrupts during COR sreset. Disable shared - * interrupts during reset to avoid these crashes. COS sreset - * takes quite a long time, so it is unfortunate that this - * seems to be needed. Anyway, I do not know of any better way - * of avoiding the crash. */ - disable_irq(dev->irq); - local->func->cor_sreset(local); - enable_irq(dev->irq); - } - prism2_hw_shutdown(dev, 1); - prism2_hw_config(dev, 0); - local->hw_resetting = 0; - -#ifdef PRISM2_DOWNLOAD_SUPPORT - if (local->dl_pri) { - printk(KERN_DEBUG "%s: persistent download of primary " - "firmware\n", dev->name); - if (prism2_download_genesis(local, local->dl_pri) < 0) - printk(KERN_WARNING "%s: download (PRI) failed\n", - dev->name); - } - - if (local->dl_sec) { - printk(KERN_DEBUG "%s: persistent download of secondary " - "firmware\n", dev->name); - if (prism2_download_volatile(local, local->dl_sec) < 0) - printk(KERN_WARNING "%s: download (SEC) failed\n", - dev->name); - } -#endif /* PRISM2_DOWNLOAD_SUPPORT */ - - /* TODO: restore beacon TIM bits for STAs that have buffered frames */ -} - - -static void prism2_schedule_reset(local_info_t *local) -{ - schedule_work(&local->reset_queue); -} - - -/* Called only as scheduled task after noticing card timeout in interrupt - * context */ -static void handle_reset_queue(struct work_struct *work) -{ - local_info_t *local = container_of(work, local_info_t, reset_queue); - - printk(KERN_DEBUG "%s: scheduled card reset\n", local->dev->name); - prism2_hw_reset(local->dev); - - if (netif_queue_stopped(local->dev)) { - int i; - - for (i = 0; i < PRISM2_TXFID_COUNT; i++) - if (local->intransmitfid[i] == PRISM2_TXFID_EMPTY) { - PDEBUG(DEBUG_EXTRA, "prism2_tx_timeout: " - "wake up queue\n"); - netif_wake_queue(local->dev); - break; - } - } -} - - -static int prism2_get_txfid_idx(local_info_t *local) -{ - int idx, end; - unsigned long flags; - - spin_lock_irqsave(&local->txfidlock, flags); - end = idx = local->next_txfid; - do { - if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) { - local->intransmitfid[idx] = PRISM2_TXFID_RESERVED; - spin_unlock_irqrestore(&local->txfidlock, flags); - return idx; - } - idx++; - if (idx >= PRISM2_TXFID_COUNT) - idx = 0; - } while (idx != end); - spin_unlock_irqrestore(&local->txfidlock, flags); - - PDEBUG(DEBUG_EXTRA2, "prism2_get_txfid_idx: no room in txfid buf: " - "packet dropped\n"); - local->dev->stats.tx_dropped++; - - return -1; -} - - -/* Called only from hardware IRQ */ -static void prism2_transmit_cb(struct net_device *dev, long context, - u16 resp0, u16 res) -{ - struct hostap_interface *iface; - local_info_t *local; - int idx = (int) context; - - iface = netdev_priv(dev); - local = iface->local; - - if (res) { - printk(KERN_DEBUG "%s: prism2_transmit_cb - res=0x%02x\n", - dev->name, res); - return; - } - - if (idx < 0 || idx >= PRISM2_TXFID_COUNT) { - printk(KERN_DEBUG "%s: prism2_transmit_cb called with invalid " - "idx=%d\n", dev->name, idx); - return; - } - - if (!test_and_clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { - printk(KERN_DEBUG "%s: driver bug: prism2_transmit_cb called " - "with no pending transmit\n", dev->name); - } - - if (netif_queue_stopped(dev)) { - /* ready for next TX, so wake up queue that was stopped in - * prism2_transmit() */ - netif_wake_queue(dev); - } - - spin_lock(&local->txfidlock); - - /* With reclaim, Resp0 contains new txfid for transmit; the old txfid - * will be automatically allocated for the next TX frame */ - local->intransmitfid[idx] = resp0; - - PDEBUG(DEBUG_FID, "%s: prism2_transmit_cb: txfid[%d]=0x%04x, " - "resp0=0x%04x, transmit_txfid=0x%04x\n", - dev->name, idx, local->txfid[idx], - resp0, local->intransmitfid[local->next_txfid]); - - idx++; - if (idx >= PRISM2_TXFID_COUNT) - idx = 0; - local->next_txfid = idx; - - /* check if all TX buffers are occupied */ - do { - if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) { - spin_unlock(&local->txfidlock); - return; - } - idx++; - if (idx >= PRISM2_TXFID_COUNT) - idx = 0; - } while (idx != local->next_txfid); - spin_unlock(&local->txfidlock); - - /* no empty TX buffers, stop queue */ - netif_stop_queue(dev); -} - - -/* Called only from software IRQ if PCI bus master is not used (with bus master - * this can be called both from software and hardware IRQ) */ -static int prism2_transmit(struct net_device *dev, int idx) -{ - struct hostap_interface *iface; - local_info_t *local; - int res; - - iface = netdev_priv(dev); - local = iface->local; - - /* The driver tries to stop netif queue so that there would not be - * more than one attempt to transmit frames going on; check that this - * is really the case */ - - if (test_and_set_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { - printk(KERN_DEBUG "%s: driver bug - prism2_transmit() called " - "when previous TX was pending\n", dev->name); - return -1; - } - - /* stop the queue for the time that transmit is pending */ - netif_stop_queue(dev); - - /* transmit packet */ - res = hfa384x_cmd_callback( - dev, - HFA384X_CMDCODE_TRANSMIT | HFA384X_CMD_TX_RECLAIM, - local->txfid[idx], - prism2_transmit_cb, (long) idx); - - if (res) { - printk(KERN_DEBUG "%s: prism2_transmit: CMDCODE_TRANSMIT " - "failed (res=%d)\n", dev->name, res); - dev->stats.tx_dropped++; - netif_wake_queue(dev); - return -1; - } - netif_trans_update(dev); - - /* Since we did not wait for command completion, the card continues - * to process on the background and we will finish handling when - * command completion event is handled (prism2_cmd_ev() function) */ - - return 0; -} - - -/* Send IEEE 802.11 frame (convert the header into Prism2 TX descriptor and - * send the payload with this descriptor) */ -/* Called only from software IRQ */ -static int prism2_tx_80211(struct sk_buff *skb, struct net_device *dev) -{ - struct hostap_interface *iface; - local_info_t *local; - struct hfa384x_tx_frame txdesc; - struct hostap_skb_tx_data *meta; - int hdr_len, data_len, idx, res, ret = -1; - u16 tx_control; - - iface = netdev_priv(dev); - local = iface->local; - - meta = (struct hostap_skb_tx_data *) skb->cb; - - prism2_callback(local, PRISM2_CALLBACK_TX_START); - - if ((local->func->card_present && !local->func->card_present(local)) || - !local->hw_ready || local->hw_downloading || local->pri_only) { - if (net_ratelimit()) { - printk(KERN_DEBUG "%s: prism2_tx_80211: hw not ready -" - " skipping\n", dev->name); - } - goto fail; - } - - memset(&txdesc, 0, sizeof(txdesc)); - - /* skb->data starts with txdesc->frame_control */ - hdr_len = sizeof(txdesc.header); - BUILD_BUG_ON(hdr_len != 24); - skb_copy_from_linear_data(skb, &txdesc.header, hdr_len); - if (ieee80211_is_data(txdesc.frame_control) && - ieee80211_has_a4(txdesc.frame_control) && - skb->len >= 30) { - /* Addr4 */ - skb_copy_from_linear_data_offset(skb, hdr_len, txdesc.addr4, - ETH_ALEN); - hdr_len += ETH_ALEN; - } - - tx_control = local->tx_control; - if (meta->tx_cb_idx) { - tx_control |= HFA384X_TX_CTRL_TX_OK; - txdesc.sw_support = cpu_to_le32(meta->tx_cb_idx); - } - txdesc.tx_control = cpu_to_le16(tx_control); - txdesc.tx_rate = meta->rate; - - data_len = skb->len - hdr_len; - txdesc.data_len = cpu_to_le16(data_len); - txdesc.len = cpu_to_be16(data_len); - - idx = prism2_get_txfid_idx(local); - if (idx < 0) - goto fail; - - if (local->frame_dump & PRISM2_DUMP_TX_HDR) - hostap_dump_tx_header(dev->name, &txdesc); - - spin_lock(&local->baplock); - res = hfa384x_setup_bap(dev, BAP0, local->txfid[idx], 0); - - if (!res) - res = hfa384x_to_bap(dev, BAP0, &txdesc, sizeof(txdesc)); - if (!res) - res = hfa384x_to_bap(dev, BAP0, skb->data + hdr_len, - skb->len - hdr_len); - spin_unlock(&local->baplock); - - if (!res) - res = prism2_transmit(dev, idx); - if (res) { - printk(KERN_DEBUG "%s: prism2_tx_80211 - to BAP0 failed\n", - dev->name); - local->intransmitfid[idx] = PRISM2_TXFID_EMPTY; - schedule_work(&local->reset_queue); - goto fail; - } - - ret = 0; - -fail: - prism2_callback(local, PRISM2_CALLBACK_TX_END); - return ret; -} - - -/* Some SMP systems have reported number of odd errors with hostap_pci. fid - * register has changed values between consecutive reads for an unknown reason. - * This should really not happen, so more debugging is needed. This test - * version is a bit slower, but it will detect most of such register changes - * and will try to get the correct fid eventually. */ -#define EXTRA_FID_READ_TESTS - -static u16 prism2_read_fid_reg(struct net_device *dev, u16 reg) -{ -#ifdef EXTRA_FID_READ_TESTS - u16 val, val2, val3; - int i; - - for (i = 0; i < 10; i++) { - val = HFA384X_INW(reg); - val2 = HFA384X_INW(reg); - val3 = HFA384X_INW(reg); - - if (val == val2 && val == val3) - return val; - - printk(KERN_DEBUG "%s: detected fid change (try=%d, reg=%04x):" - " %04x %04x %04x\n", - dev->name, i, reg, val, val2, val3); - if ((val == val2 || val == val3) && val != 0) - return val; - if (val2 == val3 && val2 != 0) - return val2; - } - printk(KERN_WARNING "%s: Uhhuh.. could not read good fid from reg " - "%04x (%04x %04x %04x)\n", dev->name, reg, val, val2, val3); - return val; -#else /* EXTRA_FID_READ_TESTS */ - return HFA384X_INW(reg); -#endif /* EXTRA_FID_READ_TESTS */ -} - - -/* Called only as a tasklet (software IRQ) */ -static void prism2_rx(local_info_t *local) -{ - struct net_device *dev = local->dev; - int res, rx_pending = 0; - u16 len, hdr_len, rxfid, status, macport; - struct hfa384x_rx_frame rxdesc; - struct sk_buff *skb = NULL; - - prism2_callback(local, PRISM2_CALLBACK_RX_START); - - rxfid = prism2_read_fid_reg(dev, HFA384X_RXFID_OFF); -#ifndef final_version - if (rxfid == 0) { - rxfid = HFA384X_INW(HFA384X_RXFID_OFF); - printk(KERN_DEBUG "prism2_rx: rxfid=0 (next 0x%04x)\n", - rxfid); - if (rxfid == 0) { - schedule_work(&local->reset_queue); - goto rx_dropped; - } - /* try to continue with the new rxfid value */ - } -#endif - - spin_lock(&local->baplock); - res = hfa384x_setup_bap(dev, BAP0, rxfid, 0); - if (!res) - res = hfa384x_from_bap(dev, BAP0, &rxdesc, sizeof(rxdesc)); - - if (res) { - spin_unlock(&local->baplock); - printk(KERN_DEBUG "%s: copy from BAP0 failed %d\n", dev->name, - res); - if (res == -ETIMEDOUT) { - schedule_work(&local->reset_queue); - } - goto rx_dropped; - } - - len = le16_to_cpu(rxdesc.data_len); - hdr_len = sizeof(rxdesc); - status = le16_to_cpu(rxdesc.status); - macport = (status >> 8) & 0x07; - - /* Drop frames with too large reported payload length. Monitor mode - * seems to sometimes pass frames (e.g., ctrl::ack) with signed and - * negative value, so allow also values 65522 .. 65534 (-14 .. -2) for - * macport 7 */ - if (len > PRISM2_DATA_MAXLEN + 8 /* WEP */) { - if (macport == 7 && local->iw_mode == IW_MODE_MONITOR) { - if (len >= (u16) -14) { - hdr_len -= 65535 - len; - hdr_len--; - } - len = 0; - } else { - spin_unlock(&local->baplock); - printk(KERN_DEBUG "%s: Received frame with invalid " - "length 0x%04x\n", dev->name, len); - hostap_dump_rx_header(dev->name, &rxdesc); - goto rx_dropped; - } - } - - skb = dev_alloc_skb(len + hdr_len); - if (!skb) { - spin_unlock(&local->baplock); - printk(KERN_DEBUG "%s: RX failed to allocate skb\n", - dev->name); - goto rx_dropped; - } - skb->dev = dev; - skb_put_data(skb, &rxdesc, hdr_len); - - if (len > 0) - res = hfa384x_from_bap(dev, BAP0, skb_put(skb, len), len); - spin_unlock(&local->baplock); - if (res) { - printk(KERN_DEBUG "%s: RX failed to read " - "frame data\n", dev->name); - goto rx_dropped; - } - - skb_queue_tail(&local->rx_list, skb); - tasklet_schedule(&local->rx_tasklet); - - rx_exit: - prism2_callback(local, PRISM2_CALLBACK_RX_END); - if (!rx_pending) { - HFA384X_OUTW(HFA384X_EV_RX, HFA384X_EVACK_OFF); - } - - return; - - rx_dropped: - dev->stats.rx_dropped++; - if (skb) - dev_kfree_skb(skb); - goto rx_exit; -} - - -/* Called only as a tasklet (software IRQ) */ -static void hostap_rx_skb(local_info_t *local, struct sk_buff *skb) -{ - struct hfa384x_rx_frame *rxdesc; - struct net_device *dev = skb->dev; - struct hostap_80211_rx_status stats; - int hdrlen, rx_hdrlen; - - rx_hdrlen = sizeof(*rxdesc); - if (skb->len < sizeof(*rxdesc)) { - /* Allow monitor mode to receive shorter frames */ - if (local->iw_mode == IW_MODE_MONITOR && - skb->len >= sizeof(*rxdesc) - 30) { - rx_hdrlen = skb->len; - } else { - dev_kfree_skb(skb); - return; - } - } - - rxdesc = (struct hfa384x_rx_frame *) skb->data; - - if (local->frame_dump & PRISM2_DUMP_RX_HDR && - skb->len >= sizeof(*rxdesc)) - hostap_dump_rx_header(dev->name, rxdesc); - - if (le16_to_cpu(rxdesc->status) & HFA384X_RX_STATUS_FCSERR && - (!local->monitor_allow_fcserr || - local->iw_mode != IW_MODE_MONITOR)) - goto drop; - - if (skb->len > PRISM2_DATA_MAXLEN) { - printk(KERN_DEBUG "%s: RX: len(%d) > MAX(%d)\n", - dev->name, skb->len, PRISM2_DATA_MAXLEN); - goto drop; - } - - stats.mac_time = le32_to_cpu(rxdesc->time); - stats.signal = rxdesc->signal - local->rssi_to_dBm; - stats.noise = rxdesc->silence - local->rssi_to_dBm; - stats.rate = rxdesc->rate; - - /* Convert Prism2 RX structure into IEEE 802.11 header */ - hdrlen = hostap_80211_get_hdrlen(rxdesc->frame_control); - if (hdrlen > rx_hdrlen) - hdrlen = rx_hdrlen; - - memmove(skb_pull(skb, rx_hdrlen - hdrlen), - &rxdesc->frame_control, hdrlen); - - hostap_80211_rx(dev, skb, &stats); - return; - - drop: - dev_kfree_skb(skb); -} - - -/* Called only as a tasklet (software IRQ) */ -static void hostap_rx_tasklet(struct tasklet_struct *t) -{ - local_info_t *local = from_tasklet(local, t, rx_tasklet); - struct sk_buff *skb; - - while ((skb = skb_dequeue(&local->rx_list)) != NULL) - hostap_rx_skb(local, skb); -} - - -/* Called only from hardware IRQ */ -static void prism2_alloc_ev(struct net_device *dev) -{ - struct hostap_interface *iface; - local_info_t *local; - int idx; - u16 fid; - - iface = netdev_priv(dev); - local = iface->local; - - fid = prism2_read_fid_reg(dev, HFA384X_ALLOCFID_OFF); - - PDEBUG(DEBUG_FID, "FID: interrupt: ALLOC - fid=0x%04x\n", fid); - - spin_lock(&local->txfidlock); - idx = local->next_alloc; - - do { - if (local->txfid[idx] == fid) { - PDEBUG(DEBUG_FID, "FID: found matching txfid[%d]\n", - idx); - -#ifndef final_version - if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) - printk("Already released txfid found at idx " - "%d\n", idx); - if (local->intransmitfid[idx] == PRISM2_TXFID_RESERVED) - printk("Already reserved txfid found at idx " - "%d\n", idx); -#endif - local->intransmitfid[idx] = PRISM2_TXFID_EMPTY; - idx++; - local->next_alloc = idx >= PRISM2_TXFID_COUNT ? 0 : - idx; - - if (!test_bit(HOSTAP_BITS_TRANSMIT, &local->bits) && - netif_queue_stopped(dev)) - netif_wake_queue(dev); - - spin_unlock(&local->txfidlock); - return; - } - - idx++; - if (idx >= PRISM2_TXFID_COUNT) - idx = 0; - } while (idx != local->next_alloc); - - printk(KERN_WARNING "%s: could not find matching txfid (0x%04x, new " - "read 0x%04x) for alloc event\n", dev->name, fid, - HFA384X_INW(HFA384X_ALLOCFID_OFF)); - printk(KERN_DEBUG "TXFIDs:"); - for (idx = 0; idx < PRISM2_TXFID_COUNT; idx++) - printk(" %04x[%04x]", local->txfid[idx], - local->intransmitfid[idx]); - printk("\n"); - spin_unlock(&local->txfidlock); - - /* FIX: should probably schedule reset; reference to one txfid was lost - * completely.. Bad things will happen if we run out of txfids - * Actually, this will cause netdev watchdog to notice TX timeout and - * then card reset after all txfids have been leaked. */ -} - - -/* Called only as a tasklet (software IRQ) */ -static void hostap_tx_callback(local_info_t *local, - struct hfa384x_tx_frame *txdesc, int ok, - char *payload) -{ - u16 sw_support, hdrlen, len; - struct sk_buff *skb; - struct hostap_tx_callback_info *cb; - - /* Make sure that frame was from us. */ - if (!ether_addr_equal(txdesc->addr2, local->dev->dev_addr)) { - printk(KERN_DEBUG "%s: TX callback - foreign frame\n", - local->dev->name); - return; - } - - sw_support = le32_to_cpu(txdesc->sw_support); - - spin_lock(&local->lock); - cb = local->tx_callback; - while (cb != NULL && cb->idx != sw_support) - cb = cb->next; - spin_unlock(&local->lock); - - if (cb == NULL) { - printk(KERN_DEBUG "%s: could not find TX callback (idx %d)\n", - local->dev->name, sw_support); - return; - } - - hdrlen = hostap_80211_get_hdrlen(txdesc->frame_control); - len = le16_to_cpu(txdesc->data_len); - skb = dev_alloc_skb(hdrlen + len); - if (skb == NULL) { - printk(KERN_DEBUG "%s: hostap_tx_callback failed to allocate " - "skb\n", local->dev->name); - return; - } - - skb_put_data(skb, (void *)&txdesc->frame_control, hdrlen); - if (payload) - skb_put_data(skb, payload, len); - - skb->dev = local->dev; - skb_reset_mac_header(skb); - - cb->func(skb, ok, cb->data); -} - - -/* Called only as a tasklet (software IRQ) */ -static int hostap_tx_compl_read(local_info_t *local, int error, - struct hfa384x_tx_frame *txdesc, - char **payload) -{ - u16 fid, len; - int res, ret = 0; - struct net_device *dev = local->dev; - - fid = prism2_read_fid_reg(dev, HFA384X_TXCOMPLFID_OFF); - - PDEBUG(DEBUG_FID, "interrupt: TX (err=%d) - fid=0x%04x\n", fid, error); - - spin_lock(&local->baplock); - res = hfa384x_setup_bap(dev, BAP0, fid, 0); - if (!res) - res = hfa384x_from_bap(dev, BAP0, txdesc, sizeof(*txdesc)); - if (res) { - PDEBUG(DEBUG_EXTRA, "%s: TX (err=%d) - fid=0x%04x - could not " - "read txdesc\n", dev->name, error, fid); - if (res == -ETIMEDOUT) { - schedule_work(&local->reset_queue); - } - ret = -1; - goto fail; - } - if (txdesc->sw_support) { - len = le16_to_cpu(txdesc->data_len); - if (len < PRISM2_DATA_MAXLEN) { - *payload = kmalloc(len, GFP_ATOMIC); - if (*payload == NULL || - hfa384x_from_bap(dev, BAP0, *payload, len)) { - PDEBUG(DEBUG_EXTRA, "%s: could not read TX " - "frame payload\n", dev->name); - kfree(*payload); - *payload = NULL; - ret = -1; - goto fail; - } - } - } - - fail: - spin_unlock(&local->baplock); - - return ret; -} - - -/* Called only as a tasklet (software IRQ) */ -static void prism2_tx_ev(local_info_t *local) -{ - struct net_device *dev = local->dev; - char *payload = NULL; - struct hfa384x_tx_frame txdesc; - - if (hostap_tx_compl_read(local, 0, &txdesc, &payload)) - goto fail; - - if (local->frame_dump & PRISM2_DUMP_TX_HDR) { - PDEBUG(DEBUG_EXTRA, "%s: TX - status=0x%04x " - "retry_count=%d tx_rate=%d seq_ctrl=%d " - "duration_id=%d\n", - dev->name, le16_to_cpu(txdesc.status), - txdesc.retry_count, txdesc.tx_rate, - le16_to_cpu(txdesc.seq_ctrl), - le16_to_cpu(txdesc.duration_id)); - } - - if (txdesc.sw_support) - hostap_tx_callback(local, &txdesc, 1, payload); - kfree(payload); - - fail: - HFA384X_OUTW(HFA384X_EV_TX, HFA384X_EVACK_OFF); -} - - -/* Called only as a tasklet (software IRQ) */ -static void hostap_sta_tx_exc_tasklet(struct tasklet_struct *t) -{ - local_info_t *local = from_tasklet(local, t, sta_tx_exc_tasklet); - struct sk_buff *skb; - - while ((skb = skb_dequeue(&local->sta_tx_exc_list)) != NULL) { - struct hfa384x_tx_frame *txdesc = - (struct hfa384x_tx_frame *) skb->data; - - if (skb->len >= sizeof(*txdesc)) { - /* Convert Prism2 RX structure into IEEE 802.11 header - */ - int hdrlen = hostap_80211_get_hdrlen(txdesc->frame_control); - memmove(skb_pull(skb, sizeof(*txdesc) - hdrlen), - &txdesc->frame_control, hdrlen); - - hostap_handle_sta_tx_exc(local, skb); - } - dev_kfree_skb(skb); - } -} - - -/* Called only as a tasklet (software IRQ) */ -static void prism2_txexc(local_info_t *local) -{ - struct net_device *dev = local->dev; - u16 status, fc; - int show_dump, res; - char *payload = NULL; - struct hfa384x_tx_frame txdesc; - - show_dump = local->frame_dump & PRISM2_DUMP_TXEXC_HDR; - dev->stats.tx_errors++; - - res = hostap_tx_compl_read(local, 1, &txdesc, &payload); - HFA384X_OUTW(HFA384X_EV_TXEXC, HFA384X_EVACK_OFF); - if (res) - return; - - status = le16_to_cpu(txdesc.status); - - /* We produce a TXDROP event only for retry or lifetime - * exceeded, because that's the only status that really mean - * that this particular node went away. - * Other errors means that *we* screwed up. - Jean II */ - if (status & (HFA384X_TX_STATUS_RETRYERR | HFA384X_TX_STATUS_AGEDERR)) - { - union iwreq_data wrqu; - - /* Copy 802.11 dest address. */ - memcpy(wrqu.addr.sa_data, txdesc.addr1, ETH_ALEN); - wrqu.addr.sa_family = ARPHRD_ETHER; - wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL); - } else - show_dump = 1; - - if (local->iw_mode == IW_MODE_MASTER || - local->iw_mode == IW_MODE_REPEAT || - local->wds_type & HOSTAP_WDS_AP_CLIENT) { - struct sk_buff *skb; - skb = dev_alloc_skb(sizeof(txdesc)); - if (skb) { - skb_put_data(skb, &txdesc, sizeof(txdesc)); - skb_queue_tail(&local->sta_tx_exc_list, skb); - tasklet_schedule(&local->sta_tx_exc_tasklet); - } - } - - if (txdesc.sw_support) - hostap_tx_callback(local, &txdesc, 0, payload); - kfree(payload); - - if (!show_dump) - return; - - PDEBUG(DEBUG_EXTRA, "%s: TXEXC - status=0x%04x (%s%s%s%s)" - " tx_control=%04x\n", - dev->name, status, - status & HFA384X_TX_STATUS_RETRYERR ? "[RetryErr]" : "", - status & HFA384X_TX_STATUS_AGEDERR ? "[AgedErr]" : "", - status & HFA384X_TX_STATUS_DISCON ? "[Discon]" : "", - status & HFA384X_TX_STATUS_FORMERR ? "[FormErr]" : "", - le16_to_cpu(txdesc.tx_control)); - - fc = le16_to_cpu(txdesc.frame_control); - PDEBUG(DEBUG_EXTRA, " retry_count=%d tx_rate=%d fc=0x%04x " - "(%s%s%s::%d%s%s)\n", - txdesc.retry_count, txdesc.tx_rate, fc, - ieee80211_is_mgmt(txdesc.frame_control) ? "Mgmt" : "", - ieee80211_is_ctl(txdesc.frame_control) ? "Ctrl" : "", - ieee80211_is_data(txdesc.frame_control) ? "Data" : "", - (fc & IEEE80211_FCTL_STYPE) >> 4, - ieee80211_has_tods(txdesc.frame_control) ? " ToDS" : "", - ieee80211_has_fromds(txdesc.frame_control) ? " FromDS" : ""); - PDEBUG(DEBUG_EXTRA, " A1=%pM A2=%pM A3=%pM A4=%pM\n", - txdesc.addr1, txdesc.addr2, - txdesc.addr3, txdesc.addr4); -} - - -/* Called only as a tasklet (software IRQ) */ -static void hostap_info_tasklet(struct tasklet_struct *t) -{ - local_info_t *local = from_tasklet(local, t, info_tasklet); - struct sk_buff *skb; - - while ((skb = skb_dequeue(&local->info_list)) != NULL) { - hostap_info_process(local, skb); - dev_kfree_skb(skb); - } -} - - -/* Called only as a tasklet (software IRQ) */ -static void prism2_info(local_info_t *local) -{ - struct net_device *dev = local->dev; - u16 fid; - int res, left; - struct hfa384x_info_frame info; - struct sk_buff *skb; - - fid = HFA384X_INW(HFA384X_INFOFID_OFF); - - spin_lock(&local->baplock); - res = hfa384x_setup_bap(dev, BAP0, fid, 0); - if (!res) - res = hfa384x_from_bap(dev, BAP0, &info, sizeof(info)); - if (res) { - spin_unlock(&local->baplock); - printk(KERN_DEBUG "Could not get info frame (fid=0x%04x)\n", - fid); - if (res == -ETIMEDOUT) { - schedule_work(&local->reset_queue); - } - goto out; - } - - left = (le16_to_cpu(info.len) - 1) * 2; - - if (info.len & cpu_to_le16(0x8000) || info.len == 0 || left > 2060) { - /* data register seems to give 0x8000 in some error cases even - * though busy bit is not set in offset register; - * in addition, length must be at least 1 due to type field */ - spin_unlock(&local->baplock); - printk(KERN_DEBUG "%s: Received info frame with invalid " - "length 0x%04x (type 0x%04x)\n", dev->name, - le16_to_cpu(info.len), le16_to_cpu(info.type)); - goto out; - } - - skb = dev_alloc_skb(sizeof(info) + left); - if (skb == NULL) { - spin_unlock(&local->baplock); - printk(KERN_DEBUG "%s: Could not allocate skb for info " - "frame\n", dev->name); - goto out; - } - - skb_put_data(skb, &info, sizeof(info)); - if (left > 0 && hfa384x_from_bap(dev, BAP0, skb_put(skb, left), left)) - { - spin_unlock(&local->baplock); - printk(KERN_WARNING "%s: Info frame read failed (fid=0x%04x, " - "len=0x%04x, type=0x%04x\n", dev->name, fid, - le16_to_cpu(info.len), le16_to_cpu(info.type)); - dev_kfree_skb(skb); - goto out; - } - spin_unlock(&local->baplock); - - skb_queue_tail(&local->info_list, skb); - tasklet_schedule(&local->info_tasklet); - - out: - HFA384X_OUTW(HFA384X_EV_INFO, HFA384X_EVACK_OFF); -} - - -/* Called only as a tasklet (software IRQ) */ -static void hostap_bap_tasklet(struct tasklet_struct *t) -{ - local_info_t *local = from_tasklet(local, t, bap_tasklet); - struct net_device *dev = local->dev; - u16 ev; - int frames = 30; - - if (local->func->card_present && !local->func->card_present(local)) - return; - - set_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits); - - /* Process all pending BAP events without generating new interrupts - * for them */ - while (frames-- > 0) { - ev = HFA384X_INW(HFA384X_EVSTAT_OFF); - if (ev == 0xffff || !(ev & HFA384X_BAP0_EVENTS)) - break; - if (ev & HFA384X_EV_RX) - prism2_rx(local); - if (ev & HFA384X_EV_INFO) - prism2_info(local); - if (ev & HFA384X_EV_TX) - prism2_tx_ev(local); - if (ev & HFA384X_EV_TXEXC) - prism2_txexc(local); - } - - set_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits); - clear_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits); - - /* Enable interrupts for new BAP events */ - hfa384x_events_all(dev); - clear_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits); -} - - -/* Called only from hardware IRQ */ -static void prism2_infdrop(struct net_device *dev) -{ - static unsigned long last_inquire = 0; - - PDEBUG(DEBUG_EXTRA, "%s: INFDROP event\n", dev->name); - - /* some firmware versions seem to get stuck with - * full CommTallies in high traffic load cases; every - * packet will then cause INFDROP event and CommTallies - * info frame will not be sent automatically. Try to - * get out of this state by inquiring CommTallies. */ - if (!last_inquire || time_after(jiffies, last_inquire + HZ)) { - hfa384x_cmd_callback(dev, HFA384X_CMDCODE_INQUIRE, - HFA384X_INFO_COMMTALLIES, NULL, 0); - last_inquire = jiffies; - } -} - - -/* Called only from hardware IRQ */ -static void prism2_ev_tick(struct net_device *dev) -{ - struct hostap_interface *iface; - local_info_t *local; - u16 evstat, inten; - static int prev_stuck = 0; - - iface = netdev_priv(dev); - local = iface->local; - - if (time_after(jiffies, local->last_tick_timer + 5 * HZ) && - local->last_tick_timer) { - evstat = HFA384X_INW(HFA384X_EVSTAT_OFF); - inten = HFA384X_INW(HFA384X_INTEN_OFF); - if (!prev_stuck) { - printk(KERN_INFO "%s: SW TICK stuck? " - "bits=0x%lx EvStat=%04x IntEn=%04x\n", - dev->name, local->bits, evstat, inten); - } - local->sw_tick_stuck++; - if ((evstat & HFA384X_BAP0_EVENTS) && - (inten & HFA384X_BAP0_EVENTS)) { - printk(KERN_INFO "%s: trying to recover from IRQ " - "hang\n", dev->name); - hfa384x_events_no_bap0(dev); - } - prev_stuck = 1; - } else - prev_stuck = 0; -} - - -/* Called only from hardware IRQ */ -static void prism2_check_magic(local_info_t *local) -{ - /* at least PCI Prism2.5 with bus mastering seems to sometimes - * return 0x0000 in SWSUPPORT0 for unknown reason, but re-reading the - * register once or twice seems to get the correct value.. PCI cards - * cannot anyway be removed during normal operation, so there is not - * really any need for this verification with them. */ - -#ifndef PRISM2_PCI -#ifndef final_version - static unsigned long last_magic_err = 0; - struct net_device *dev = local->dev; - - if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) { - if (!local->hw_ready) - return; - HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); - if (time_after(jiffies, last_magic_err + 10 * HZ)) { - printk("%s: Interrupt, but SWSUPPORT0 does not match: " - "%04X != %04X - card removed?\n", dev->name, - HFA384X_INW(HFA384X_SWSUPPORT0_OFF), - HFA384X_MAGIC); - last_magic_err = jiffies; - } else if (net_ratelimit()) { - printk(KERN_DEBUG "%s: interrupt - SWSUPPORT0=%04x " - "MAGIC=%04x\n", dev->name, - HFA384X_INW(HFA384X_SWSUPPORT0_OFF), - HFA384X_MAGIC); - } - if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != 0xffff) - schedule_work(&local->reset_queue); - return; - } -#endif /* final_version */ -#endif /* !PRISM2_PCI */ -} - - -/* Called only from hardware IRQ */ -static irqreturn_t prism2_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - struct hostap_interface *iface; - local_info_t *local; - int events = 0; - u16 ev; - - iface = netdev_priv(dev); - local = iface->local; - - /* Detect early interrupt before driver is fully configured */ - spin_lock(&local->irq_init_lock); - if (!dev->base_addr) { - if (net_ratelimit()) { - printk(KERN_DEBUG "%s: Interrupt, but dev not configured\n", - dev->name); - } - spin_unlock(&local->irq_init_lock); - return IRQ_HANDLED; - } - spin_unlock(&local->irq_init_lock); - - prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 0); - - if (local->func->card_present && !local->func->card_present(local)) { - if (net_ratelimit()) { - printk(KERN_DEBUG "%s: Interrupt, but dev not OK\n", - dev->name); - } - return IRQ_HANDLED; - } - - prism2_check_magic(local); - - for (;;) { - ev = HFA384X_INW(HFA384X_EVSTAT_OFF); - if (ev == 0xffff) { - if (local->shutdown) - return IRQ_HANDLED; - HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF); - printk(KERN_DEBUG "%s: prism2_interrupt: ev=0xffff\n", - dev->name); - return IRQ_HANDLED; - } - - ev &= HFA384X_INW(HFA384X_INTEN_OFF); - if (ev == 0) - break; - - if (ev & HFA384X_EV_CMD) { - prism2_cmd_ev(dev); - } - - /* Above events are needed even before hw is ready, but other - * events should be skipped during initialization. This may - * change for AllocEv if allocate_fid is implemented without - * busy waiting. */ - if (!local->hw_ready || local->hw_resetting || - !local->dev_enabled) { - ev = HFA384X_INW(HFA384X_EVSTAT_OFF); - if (ev & HFA384X_EV_CMD) - goto next_event; - if ((ev & HFA384X_EVENT_MASK) == 0) - return IRQ_HANDLED; - if (local->dev_enabled && (ev & ~HFA384X_EV_TICK) && - net_ratelimit()) { - printk(KERN_DEBUG "%s: prism2_interrupt: hw " - "not ready; skipping events 0x%04x " - "(IntEn=0x%04x)%s%s%s\n", - dev->name, ev, - HFA384X_INW(HFA384X_INTEN_OFF), - !local->hw_ready ? " (!hw_ready)" : "", - local->hw_resetting ? - " (hw_resetting)" : "", - !local->dev_enabled ? - " (!dev_enabled)" : ""); - } - HFA384X_OUTW(ev, HFA384X_EVACK_OFF); - return IRQ_HANDLED; - } - - if (ev & HFA384X_EV_TICK) { - prism2_ev_tick(dev); - HFA384X_OUTW(HFA384X_EV_TICK, HFA384X_EVACK_OFF); - } - - if (ev & HFA384X_EV_ALLOC) { - prism2_alloc_ev(dev); - HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF); - } - - /* Reading data from the card is quite time consuming, so do it - * in tasklets. TX, TXEXC, RX, and INFO events will be ACKed - * and unmasked after needed data has been read completely. */ - if (ev & HFA384X_BAP0_EVENTS) { - hfa384x_events_no_bap0(dev); - tasklet_schedule(&local->bap_tasklet); - } - -#ifndef final_version - if (ev & HFA384X_EV_WTERR) { - PDEBUG(DEBUG_EXTRA, "%s: WTERR event\n", dev->name); - HFA384X_OUTW(HFA384X_EV_WTERR, HFA384X_EVACK_OFF); - } -#endif /* final_version */ - - if (ev & HFA384X_EV_INFDROP) { - prism2_infdrop(dev); - HFA384X_OUTW(HFA384X_EV_INFDROP, HFA384X_EVACK_OFF); - } - - next_event: - events++; - if (events >= PRISM2_MAX_INTERRUPT_EVENTS) { - PDEBUG(DEBUG_EXTRA, "prism2_interrupt: >%d events " - "(EvStat=0x%04x)\n", - PRISM2_MAX_INTERRUPT_EVENTS, - HFA384X_INW(HFA384X_EVSTAT_OFF)); - break; - } - } - prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 1); - return IRQ_RETVAL(events); -} - - -static void prism2_check_sta_fw_version(local_info_t *local) -{ - struct hfa384x_comp_ident comp; - int id, variant, major, minor; - - if (hfa384x_get_rid(local->dev, HFA384X_RID_STAID, - &comp, sizeof(comp), 1) < 0) - return; - - local->fw_ap = 0; - id = le16_to_cpu(comp.id); - if (id != HFA384X_COMP_ID_STA) { - if (id == HFA384X_COMP_ID_FW_AP) - local->fw_ap = 1; - return; - } - - major = __le16_to_cpu(comp.major); - minor = __le16_to_cpu(comp.minor); - variant = __le16_to_cpu(comp.variant); - local->sta_fw_ver = PRISM2_FW_VER(major, minor, variant); - - /* Station firmware versions before 1.4.x seem to have a bug in - * firmware-based WEP encryption when using Host AP mode, so use - * host_encrypt as a default for them. Firmware version 1.4.9 is the - * first one that has been seen to produce correct encryption, but the - * bug might be fixed before that (although, at least 1.4.2 is broken). - */ - local->fw_encrypt_ok = local->sta_fw_ver >= PRISM2_FW_VER(1,4,9); - - if (local->iw_mode == IW_MODE_MASTER && !local->host_encrypt && - !local->fw_encrypt_ok) { - printk(KERN_DEBUG "%s: defaulting to host-based encryption as " - "a workaround for firmware bug in Host AP mode WEP\n", - local->dev->name); - local->host_encrypt = 1; - } - - /* IEEE 802.11 standard compliant WDS frames (4 addresses) were broken - * in station firmware versions before 1.5.x. With these versions, the - * driver uses a workaround with bogus frame format (4th address after - * the payload). This is not compatible with other AP devices. Since - * the firmware bug is fixed in the latest station firmware versions, - * automatically enable standard compliant mode for cards using station - * firmware version 1.5.0 or newer. */ - if (local->sta_fw_ver >= PRISM2_FW_VER(1,5,0)) - local->wds_type |= HOSTAP_WDS_STANDARD_FRAME; - else { - printk(KERN_DEBUG "%s: defaulting to bogus WDS frame as a " - "workaround for firmware bug in Host AP mode WDS\n", - local->dev->name); - } - - hostap_check_sta_fw_version(local->ap, local->sta_fw_ver); -} - - -static void hostap_passive_scan(struct timer_list *t) -{ - local_info_t *local = from_timer(local, t, passive_scan_timer); - struct net_device *dev = local->dev; - u16 chan; - - if (local->passive_scan_interval <= 0) - return; - - if (local->passive_scan_state == PASSIVE_SCAN_LISTEN) { - int max_tries = 16; - - /* Even though host system does not really know when the WLAN - * MAC is sending frames, try to avoid changing channels for - * passive scanning when a host-generated frame is being - * transmitted */ - if (test_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) { - printk(KERN_DEBUG "%s: passive scan detected pending " - "TX - delaying\n", dev->name); - local->passive_scan_timer.expires = jiffies + HZ / 10; - add_timer(&local->passive_scan_timer); - return; - } - - do { - local->passive_scan_channel++; - if (local->passive_scan_channel > 14) - local->passive_scan_channel = 1; - max_tries--; - } while (!(local->channel_mask & - (1 << (local->passive_scan_channel - 1))) && - max_tries > 0); - - if (max_tries == 0) { - printk(KERN_INFO "%s: no allowed passive scan channels" - " found\n", dev->name); - return; - } - - printk(KERN_DEBUG "%s: passive scan channel %d\n", - dev->name, local->passive_scan_channel); - chan = local->passive_scan_channel; - local->passive_scan_state = PASSIVE_SCAN_WAIT; - local->passive_scan_timer.expires = jiffies + HZ / 10; - } else { - chan = local->channel; - local->passive_scan_state = PASSIVE_SCAN_LISTEN; - local->passive_scan_timer.expires = jiffies + - local->passive_scan_interval * HZ; - } - - if (hfa384x_cmd_callback(dev, HFA384X_CMDCODE_TEST | - (HFA384X_TEST_CHANGE_CHANNEL << 8), - chan, NULL, 0)) - printk(KERN_ERR "%s: passive scan channel set %d " - "failed\n", dev->name, chan); - - add_timer(&local->passive_scan_timer); -} - - -/* Called only as a scheduled task when communications quality values should - * be updated. */ -static void handle_comms_qual_update(struct work_struct *work) -{ - local_info_t *local = - container_of(work, local_info_t, comms_qual_update); - prism2_update_comms_qual(local->dev); -} - - -/* Software watchdog - called as a timer. Hardware interrupt (Tick event) is - * used to monitor that local->last_tick_timer is being updated. If not, - * interrupt busy-loop is assumed and driver tries to recover by masking out - * some events. */ -static void hostap_tick_timer(struct timer_list *t) -{ - static unsigned long last_inquire = 0; - local_info_t *local = from_timer(local, t, tick_timer); - local->last_tick_timer = jiffies; - - /* Inquire CommTallies every 10 seconds to keep the statistics updated - * more often during low load and when using 32-bit tallies. */ - if ((!last_inquire || time_after(jiffies, last_inquire + 10 * HZ)) && - !local->hw_downloading && local->hw_ready && - !local->hw_resetting && local->dev_enabled) { - hfa384x_cmd_callback(local->dev, HFA384X_CMDCODE_INQUIRE, - HFA384X_INFO_COMMTALLIES, NULL, 0); - last_inquire = jiffies; - } - - if ((local->last_comms_qual_update == 0 || - time_after(jiffies, local->last_comms_qual_update + 10 * HZ)) && - (local->iw_mode == IW_MODE_INFRA || - local->iw_mode == IW_MODE_ADHOC)) { - schedule_work(&local->comms_qual_update); - } - - local->tick_timer.expires = jiffies + 2 * HZ; - add_timer(&local->tick_timer); -} - - -#if !defined(PRISM2_NO_PROCFS_DEBUG) && defined(CONFIG_PROC_FS) -static u16 hfa384x_read_reg(struct net_device *dev, u16 reg) -{ - return HFA384X_INW(reg); -} - -static int prism2_registers_proc_show(struct seq_file *m, void *v) -{ - local_info_t *local = m->private; - -#define SHOW_REG(n) \ - seq_printf(m, #n "=%04x\n", hfa384x_read_reg(local->dev, HFA384X_##n##_OFF)) - - SHOW_REG(CMD); - SHOW_REG(PARAM0); - SHOW_REG(PARAM1); - SHOW_REG(PARAM2); - SHOW_REG(STATUS); - SHOW_REG(RESP0); - SHOW_REG(RESP1); - SHOW_REG(RESP2); - SHOW_REG(INFOFID); - SHOW_REG(CONTROL); - SHOW_REG(SELECT0); - SHOW_REG(SELECT1); - SHOW_REG(OFFSET0); - SHOW_REG(OFFSET1); - SHOW_REG(RXFID); - SHOW_REG(ALLOCFID); - SHOW_REG(TXCOMPLFID); - SHOW_REG(SWSUPPORT0); - SHOW_REG(SWSUPPORT1); - SHOW_REG(SWSUPPORT2); - SHOW_REG(EVSTAT); - SHOW_REG(INTEN); - SHOW_REG(EVACK); - /* Do not read data registers, because they change the state of the - * MAC (offset += 2) */ - /* SHOW_REG(DATA0); */ - /* SHOW_REG(DATA1); */ - SHOW_REG(AUXPAGE); - SHOW_REG(AUXOFFSET); - /* SHOW_REG(AUXDATA); */ -#ifdef PRISM2_PCI - SHOW_REG(PCICOR); - SHOW_REG(PCIHCR); - SHOW_REG(PCI_M0_ADDRH); - SHOW_REG(PCI_M0_ADDRL); - SHOW_REG(PCI_M0_LEN); - SHOW_REG(PCI_M0_CTL); - SHOW_REG(PCI_STATUS); - SHOW_REG(PCI_M1_ADDRH); - SHOW_REG(PCI_M1_ADDRL); - SHOW_REG(PCI_M1_LEN); - SHOW_REG(PCI_M1_CTL); -#endif /* PRISM2_PCI */ - - return 0; -} -#endif - -struct set_tim_data { - struct list_head list; - int aid; - int set; -}; - -static int prism2_set_tim(struct net_device *dev, int aid, int set) -{ - struct list_head *ptr; - struct set_tim_data *new_entry; - struct hostap_interface *iface; - local_info_t *local; - - iface = netdev_priv(dev); - local = iface->local; - - new_entry = kzalloc(sizeof(*new_entry), GFP_ATOMIC); - if (new_entry == NULL) - return -ENOMEM; - - new_entry->aid = aid; - new_entry->set = set; - - spin_lock_bh(&local->set_tim_lock); - list_for_each(ptr, &local->set_tim_list) { - struct set_tim_data *entry = - list_entry(ptr, struct set_tim_data, list); - if (entry->aid == aid) { - PDEBUG(DEBUG_PS2, "%s: prism2_set_tim: aid=%d " - "set=%d ==> %d\n", - local->dev->name, aid, entry->set, set); - entry->set = set; - kfree(new_entry); - new_entry = NULL; - break; - } - } - if (new_entry) - list_add_tail(&new_entry->list, &local->set_tim_list); - spin_unlock_bh(&local->set_tim_lock); - - schedule_work(&local->set_tim_queue); - - return 0; -} - - -static void handle_set_tim_queue(struct work_struct *work) -{ - local_info_t *local = container_of(work, local_info_t, set_tim_queue); - struct set_tim_data *entry; - u16 val; - - for (;;) { - entry = NULL; - spin_lock_bh(&local->set_tim_lock); - if (!list_empty(&local->set_tim_list)) { - entry = list_entry(local->set_tim_list.next, - struct set_tim_data, list); - list_del(&entry->list); - } - spin_unlock_bh(&local->set_tim_lock); - if (!entry) - break; - - PDEBUG(DEBUG_PS2, "%s: handle_set_tim_queue: aid=%d set=%d\n", - local->dev->name, entry->aid, entry->set); - - val = entry->aid; - if (entry->set) - val |= 0x8000; - if (hostap_set_word(local->dev, HFA384X_RID_CNFTIMCTRL, val)) { - printk(KERN_DEBUG "%s: set_tim failed (aid=%d " - "set=%d)\n", - local->dev->name, entry->aid, entry->set); - } - - kfree(entry); - } -} - - -static void prism2_clear_set_tim_queue(local_info_t *local) -{ - struct list_head *ptr, *n; - - list_for_each_safe(ptr, n, &local->set_tim_list) { - struct set_tim_data *entry; - entry = list_entry(ptr, struct set_tim_data, list); - list_del(&entry->list); - kfree(entry); - } -} - - -/* - * HostAP uses two layers of net devices, where the inner - * layer gets called all the time from the outer layer. - * This is a natural nesting, which needs a split lock type. - */ -static struct lock_class_key hostap_netdev_xmit_lock_key; -static struct lock_class_key hostap_netdev_addr_lock_key; - -static void prism2_set_lockdep_class_one(struct net_device *dev, - struct netdev_queue *txq, - void *_unused) -{ - lockdep_set_class(&txq->_xmit_lock, - &hostap_netdev_xmit_lock_key); -} - -static void prism2_set_lockdep_class(struct net_device *dev) -{ - lockdep_set_class(&dev->addr_list_lock, - &hostap_netdev_addr_lock_key); - netdev_for_each_tx_queue(dev, prism2_set_lockdep_class_one, NULL); -} - -static struct net_device * -prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx, - struct device *sdev) -{ - struct net_device *dev; - struct hostap_interface *iface; - struct local_info *local; - int len, i, ret; - - if (funcs == NULL) - return NULL; - - len = strlen(dev_template); - if (len >= IFNAMSIZ || strstr(dev_template, "%d") == NULL) { - printk(KERN_WARNING "hostap: Invalid dev_template='%s'\n", - dev_template); - return NULL; - } - - len = sizeof(struct hostap_interface) + - 3 + sizeof(struct local_info) + - 3 + sizeof(struct ap_data); - - dev = alloc_etherdev(len); - if (dev == NULL) - return NULL; - - iface = netdev_priv(dev); - local = (struct local_info *) ((((long) (iface + 1)) + 3) & ~3); - local->ap = (struct ap_data *) ((((long) (local + 1)) + 3) & ~3); - local->dev = iface->dev = dev; - iface->local = local; - iface->type = HOSTAP_INTERFACE_MASTER; - INIT_LIST_HEAD(&local->hostap_interfaces); - - local->hw_module = THIS_MODULE; - -#ifdef PRISM2_IO_DEBUG - local->io_debug_enabled = 1; -#endif /* PRISM2_IO_DEBUG */ - - local->func = funcs; - local->func->cmd = hfa384x_cmd; - local->func->read_regs = hfa384x_read_regs; - local->func->get_rid = hfa384x_get_rid; - local->func->set_rid = hfa384x_set_rid; - local->func->hw_enable = prism2_hw_enable; - local->func->hw_config = prism2_hw_config; - local->func->hw_reset = prism2_hw_reset; - local->func->hw_shutdown = prism2_hw_shutdown; - local->func->reset_port = prism2_reset_port; - local->func->schedule_reset = prism2_schedule_reset; -#ifdef PRISM2_DOWNLOAD_SUPPORT - local->func->read_aux_proc_ops = &prism2_download_aux_dump_proc_ops; - local->func->download = prism2_download; -#endif /* PRISM2_DOWNLOAD_SUPPORT */ - local->func->tx = prism2_tx_80211; - local->func->set_tim = prism2_set_tim; - local->func->need_tx_headroom = 0; /* no need to add txdesc in - * skb->data (FIX: maybe for DMA bus - * mastering? */ - - local->mtu = mtu; - - rwlock_init(&local->iface_lock); - spin_lock_init(&local->txfidlock); - spin_lock_init(&local->cmdlock); - spin_lock_init(&local->baplock); - spin_lock_init(&local->lock); - spin_lock_init(&local->irq_init_lock); - mutex_init(&local->rid_bap_mtx); - - if (card_idx < 0 || card_idx >= MAX_PARM_DEVICES) - card_idx = 0; - local->card_idx = card_idx; - - len = strlen(essid); - memcpy(local->essid, essid, - len > MAX_SSID_LEN ? MAX_SSID_LEN : len); - local->essid[MAX_SSID_LEN] = '\0'; - i = GET_INT_PARM(iw_mode, card_idx); - if ((i >= IW_MODE_ADHOC && i <= IW_MODE_REPEAT) || - i == IW_MODE_MONITOR) { - local->iw_mode = i; - } else { - printk(KERN_WARNING "prism2: Unknown iw_mode %d; using " - "IW_MODE_MASTER\n", i); - local->iw_mode = IW_MODE_MASTER; - } - local->channel = GET_INT_PARM(channel, card_idx); - local->beacon_int = GET_INT_PARM(beacon_int, card_idx); - local->dtim_period = GET_INT_PARM(dtim_period, card_idx); - local->wds_max_connections = 16; - local->tx_control = HFA384X_TX_CTRL_FLAGS; - local->manual_retry_count = -1; - local->rts_threshold = 2347; - local->fragm_threshold = 2346; - local->rssi_to_dBm = 100; /* default; to be overriden by - * cnfDbmAdjust, if available */ - local->auth_algs = PRISM2_AUTH_OPEN | PRISM2_AUTH_SHARED_KEY; - local->sram_type = -1; - local->scan_channel_mask = 0xffff; - local->monitor_type = PRISM2_MONITOR_RADIOTAP; - - /* Initialize task queue structures */ - INIT_WORK(&local->reset_queue, handle_reset_queue); - INIT_WORK(&local->set_multicast_list_queue, - hostap_set_multicast_list_queue); - - INIT_WORK(&local->set_tim_queue, handle_set_tim_queue); - INIT_LIST_HEAD(&local->set_tim_list); - spin_lock_init(&local->set_tim_lock); - - INIT_WORK(&local->comms_qual_update, handle_comms_qual_update); - - /* Initialize tasklets for handling hardware IRQ related operations - * outside hw IRQ handler */ - tasklet_setup(&local->bap_tasklet, hostap_bap_tasklet); - tasklet_setup(&local->info_tasklet, hostap_info_tasklet); - hostap_info_init(local); - - tasklet_setup(&local->rx_tasklet, hostap_rx_tasklet); - skb_queue_head_init(&local->rx_list); - - tasklet_setup(&local->sta_tx_exc_tasklet, - hostap_sta_tx_exc_tasklet); - skb_queue_head_init(&local->sta_tx_exc_list); - - INIT_LIST_HEAD(&local->cmd_queue); - init_waitqueue_head(&local->hostscan_wq); - - lib80211_crypt_info_init(&local->crypt_info, dev->name, &local->lock); - - timer_setup(&local->passive_scan_timer, hostap_passive_scan, 0); - timer_setup(&local->tick_timer, hostap_tick_timer, 0); - local->tick_timer.expires = jiffies + 2 * HZ; - add_timer(&local->tick_timer); - - INIT_LIST_HEAD(&local->bss_list); - - hostap_setup_dev(dev, local, HOSTAP_INTERFACE_MASTER); - - dev->type = ARPHRD_IEEE80211; - dev->header_ops = &hostap_80211_ops; - - rtnl_lock(); - ret = dev_alloc_name(dev, "wifi%d"); - SET_NETDEV_DEV(dev, sdev); - if (ret >= 0) - ret = register_netdevice(dev); - - prism2_set_lockdep_class(dev); - rtnl_unlock(); - if (ret < 0) { - printk(KERN_WARNING "%s: register netdevice failed!\n", - dev_info); - goto fail; - } - printk(KERN_INFO "%s: Registered netdevice %s\n", dev_info, dev->name); - - hostap_init_data(local); - return dev; - - fail: - free_netdev(dev); - return NULL; -} - - -static int hostap_hw_ready(struct net_device *dev) -{ - struct hostap_interface *iface; - struct local_info *local; - - iface = netdev_priv(dev); - local = iface->local; - local->ddev = hostap_add_interface(local, HOSTAP_INTERFACE_MAIN, 0, - "", dev_template); - - if (local->ddev) { - if (local->iw_mode == IW_MODE_INFRA || - local->iw_mode == IW_MODE_ADHOC) { - netif_carrier_off(local->dev); - netif_carrier_off(local->ddev); - } - hostap_init_proc(local); -#ifndef PRISM2_NO_PROCFS_DEBUG - proc_create_single_data("registers", 0, local->proc, - prism2_registers_proc_show, local); -#endif /* PRISM2_NO_PROCFS_DEBUG */ - hostap_init_ap_proc(local); - return 0; - } - - return -1; -} - - -static void prism2_free_local_data(struct net_device *dev) -{ - struct hostap_tx_callback_info *tx_cb, *tx_cb_prev; - int i; - struct hostap_interface *iface; - struct local_info *local; - struct list_head *ptr, *n; - - if (dev == NULL) - return; - - iface = netdev_priv(dev); - local = iface->local; - - /* Unregister all netdevs before freeing local data. */ - list_for_each_safe(ptr, n, &local->hostap_interfaces) { - iface = list_entry(ptr, struct hostap_interface, list); - if (iface->type == HOSTAP_INTERFACE_MASTER) { - /* special handling for this interface below */ - continue; - } - hostap_remove_interface(iface->dev, 0, 1); - } - - unregister_netdev(local->dev); - - flush_work(&local->reset_queue); - flush_work(&local->set_multicast_list_queue); - flush_work(&local->set_tim_queue); -#ifndef PRISM2_NO_STATION_MODES - flush_work(&local->info_queue); -#endif - flush_work(&local->comms_qual_update); - - lib80211_crypt_info_free(&local->crypt_info); - - if (timer_pending(&local->passive_scan_timer)) - del_timer(&local->passive_scan_timer); - - if (timer_pending(&local->tick_timer)) - del_timer(&local->tick_timer); - - prism2_clear_cmd_queue(local); - - skb_queue_purge(&local->info_list); - skb_queue_purge(&local->rx_list); - skb_queue_purge(&local->sta_tx_exc_list); - - if (local->dev_enabled) - prism2_callback(local, PRISM2_CALLBACK_DISABLE); - - if (local->ap != NULL) - hostap_free_data(local->ap); - -#ifndef PRISM2_NO_PROCFS_DEBUG - if (local->proc != NULL) - remove_proc_entry("registers", local->proc); -#endif /* PRISM2_NO_PROCFS_DEBUG */ - hostap_remove_proc(local); - - tx_cb = local->tx_callback; - while (tx_cb != NULL) { - tx_cb_prev = tx_cb; - tx_cb = tx_cb->next; - kfree(tx_cb_prev); - } - - hostap_set_hostapd(local, 0, 0); - hostap_set_hostapd_sta(local, 0, 0); - - for (i = 0; i < PRISM2_FRAG_CACHE_LEN; i++) { - if (local->frag_cache[i].skb != NULL) - dev_kfree_skb(local->frag_cache[i].skb); - } - -#ifdef PRISM2_DOWNLOAD_SUPPORT - prism2_download_free_data(local->dl_pri); - prism2_download_free_data(local->dl_sec); -#endif /* PRISM2_DOWNLOAD_SUPPORT */ - - prism2_clear_set_tim_queue(local); - - list_for_each_safe(ptr, n, &local->bss_list) { - struct hostap_bss_info *bss = - list_entry(ptr, struct hostap_bss_info, list); - kfree(bss); - } - - kfree(local->pda); - kfree(local->last_scan_results); - kfree(local->generic_elem); - - free_netdev(local->dev); -} - - -#if defined(PRISM2_PCI) || defined(PRISM2_PCCARD) -static void __maybe_unused prism2_suspend(struct net_device *dev) -{ - struct hostap_interface *iface; - struct local_info *local; - union iwreq_data wrqu; - - iface = netdev_priv(dev); - local = iface->local; - - /* Send disconnect event, e.g., to trigger reassociation after resume - * if wpa_supplicant is used. */ - memset(&wrqu, 0, sizeof(wrqu)); - wrqu.ap_addr.sa_family = ARPHRD_ETHER; - wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL); - - /* Disable hardware and firmware */ - prism2_hw_shutdown(dev, 0); -} -#endif /* PRISM2_PCI || PRISM2_PCCARD */ - - -/* These might at some point be compiled separately and used as separate - * kernel modules or linked into one */ -#ifdef PRISM2_DOWNLOAD_SUPPORT -#include "hostap_download.c" -#endif /* PRISM2_DOWNLOAD_SUPPORT */ - -#ifdef PRISM2_CALLBACK -/* External hostap_callback.c file can be used to, e.g., blink activity led. - * This can use platform specific code and must define prism2_callback() - * function (if PRISM2_CALLBACK is not defined, these function calls are not - * used. */ -#include "hostap_callback.c" -#endif /* PRISM2_CALLBACK */ |