8f641d93c3
Recent patches added support for resetting the SD8686 hardware when commands time out, which seems to happen quite frequently soon after resuming the system from a Wake-on-WLAN-triggered resume. At http://dev.laptop.org/ticket/10969 we see the same thing happen with transmits. In this case, the hardware will fail to respond to a frame passed for transmission, and libertas (correctly) will block all further commands and transmissions as the hardware can only deal with one thing at a time. This results in a lockup while the system waits indefinitely for the dead card to respond. Hook up a TX lockup timer to detect this and reset the hardware. Signed-off-by: Daniel Drake <dsd@laptop.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
199 lines
4.8 KiB
C
199 lines
4.8 KiB
C
/*
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* This file contains definitions and data structures specific
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* to Marvell 802.11 NIC. It contains the Device Information
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* structure struct lbs_private..
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*/
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#ifndef _LBS_DEV_H_
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#define _LBS_DEV_H_
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#include "defs.h"
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#include "host.h"
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#include <linux/kfifo.h>
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/* sleep_params */
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struct sleep_params {
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uint16_t sp_error;
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uint16_t sp_offset;
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uint16_t sp_stabletime;
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uint8_t sp_calcontrol;
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uint8_t sp_extsleepclk;
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uint16_t sp_reserved;
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};
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/* Mesh statistics */
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struct lbs_mesh_stats {
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u32 fwd_bcast_cnt; /* Fwd: Broadcast counter */
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u32 fwd_unicast_cnt; /* Fwd: Unicast counter */
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u32 fwd_drop_ttl; /* Fwd: TTL zero */
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u32 fwd_drop_rbt; /* Fwd: Recently Broadcasted */
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u32 fwd_drop_noroute; /* Fwd: No route to Destination */
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u32 fwd_drop_nobuf; /* Fwd: Run out of internal buffers */
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u32 drop_blind; /* Rx: Dropped by blinding table */
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u32 tx_failed_cnt; /* Tx: Failed transmissions */
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};
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/* Private structure for the MV device */
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struct lbs_private {
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/* Basic networking */
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struct net_device *dev;
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u32 connect_status;
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struct work_struct mcast_work;
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u32 nr_of_multicastmacaddr;
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u8 multicastlist[MRVDRV_MAX_MULTICAST_LIST_SIZE][ETH_ALEN];
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/* CFG80211 */
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struct wireless_dev *wdev;
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bool wiphy_registered;
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struct cfg80211_scan_request *scan_req;
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u8 assoc_bss[ETH_ALEN];
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u8 disassoc_reason;
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/* Mesh */
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struct net_device *mesh_dev; /* Virtual device */
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#ifdef CONFIG_LIBERTAS_MESH
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struct lbs_mesh_stats mstats;
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uint16_t mesh_tlv;
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u8 mesh_ssid[IEEE80211_MAX_SSID_LEN + 1];
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u8 mesh_ssid_len;
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#endif
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/* Debugfs */
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struct dentry *debugfs_dir;
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struct dentry *debugfs_debug;
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struct dentry *debugfs_files[6];
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struct dentry *events_dir;
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struct dentry *debugfs_events_files[6];
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struct dentry *regs_dir;
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struct dentry *debugfs_regs_files[6];
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/* Hardware debugging */
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u32 mac_offset;
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u32 bbp_offset;
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u32 rf_offset;
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/* Power management */
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u16 psmode;
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u32 psstate;
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u8 needtowakeup;
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/* Deep sleep */
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int is_deep_sleep;
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int deep_sleep_required;
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int is_auto_deep_sleep_enabled;
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int wakeup_dev_required;
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int is_activity_detected;
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int auto_deep_sleep_timeout; /* in ms */
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wait_queue_head_t ds_awake_q;
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struct timer_list auto_deepsleep_timer;
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/* Host sleep*/
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int is_host_sleep_configured;
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int is_host_sleep_activated;
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wait_queue_head_t host_sleep_q;
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/* Hardware access */
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void *card;
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bool iface_running;
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u8 fw_ready;
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u8 surpriseremoved;
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u8 setup_fw_on_resume;
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int (*hw_host_to_card) (struct lbs_private *priv, u8 type, u8 *payload, u16 nb);
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void (*reset_card) (struct lbs_private *priv);
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int (*power_save) (struct lbs_private *priv);
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int (*power_restore) (struct lbs_private *priv);
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int (*enter_deep_sleep) (struct lbs_private *priv);
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int (*exit_deep_sleep) (struct lbs_private *priv);
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int (*reset_deep_sleep_wakeup) (struct lbs_private *priv);
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/* Adapter info (from EEPROM) */
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u32 fwrelease;
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u32 fwcapinfo;
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u16 regioncode;
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u8 current_addr[ETH_ALEN];
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u8 copied_hwaddr;
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/* Command download */
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u8 dnld_sent;
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/* bit0 1/0=data_sent/data_tx_done,
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bit1 1/0=cmd_sent/cmd_tx_done,
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all other bits reserved 0 */
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u16 seqnum;
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struct cmd_ctrl_node *cmd_array;
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struct cmd_ctrl_node *cur_cmd;
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struct list_head cmdfreeq; /* free command buffers */
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struct list_head cmdpendingq; /* pending command buffers */
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struct timer_list command_timer;
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int cmd_timed_out;
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/* Command responses sent from the hardware to the driver */
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u8 resp_idx;
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u8 resp_buf[2][LBS_UPLD_SIZE];
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u32 resp_len[2];
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/* Events sent from hardware to driver */
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struct kfifo event_fifo;
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/* thread to service interrupts */
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struct task_struct *main_thread;
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wait_queue_head_t waitq;
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struct workqueue_struct *work_thread;
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/* Encryption stuff */
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u8 authtype_auto;
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u8 wep_tx_key;
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u8 wep_key[4][WLAN_KEY_LEN_WEP104];
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u8 wep_key_len[4];
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/* Wake On LAN */
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uint32_t wol_criteria;
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uint8_t wol_gpio;
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uint8_t wol_gap;
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bool ehs_remove_supported;
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/* Transmitting */
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int tx_pending_len; /* -1 while building packet */
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u8 tx_pending_buf[LBS_UPLD_SIZE];
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/* protected by hard_start_xmit serialization */
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u8 txretrycount;
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struct sk_buff *currenttxskb;
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struct timer_list tx_lockup_timer;
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/* Locks */
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struct mutex lock;
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spinlock_t driver_lock;
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/* NIC/link operation characteristics */
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u16 mac_control;
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u8 radio_on;
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u8 cur_rate;
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u8 channel;
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s16 txpower_cur;
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s16 txpower_min;
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s16 txpower_max;
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/* Scanning */
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struct delayed_work scan_work;
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int scan_channel;
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/* Queue of things waiting for scan completion */
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wait_queue_head_t scan_q;
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/* Whether the scan was initiated internally and not by cfg80211 */
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bool internal_scan;
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};
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extern struct cmd_confirm_sleep confirm_sleep;
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/* Check if there is an interface active. */
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static inline int lbs_iface_active(struct lbs_private *priv)
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{
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int r;
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r = netif_running(priv->dev);
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if (priv->mesh_dev)
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r |= netif_running(priv->mesh_dev);
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return r;
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}
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#endif
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