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Diffstat (limited to 'drivers/net/wireless/intersil/hostap/hostap_hw.c')
-rw-r--r--drivers/net/wireless/intersil/hostap/hostap_hw.c3387
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 */