diff options
Diffstat (limited to 'drivers/net/wireless/intersil/hostap/hostap_hw.c')
| -rw-r--r-- | drivers/net/wireless/intersil/hostap/hostap_hw.c | 3387 |
1 files changed, 0 insertions, 3387 deletions
diff --git a/drivers/net/wireless/intersil/hostap/hostap_hw.c b/drivers/net/wireless/intersil/hostap/hostap_hw.c deleted file mode 100644 index b74f4cb5d6d3..000000000000 --- 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); |