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linux/drivers/net/wireless/mwl8k.c
Nishant Sarmukadam bbf71a8f35 mwl8k: Fix the firmware hang issue for 8764 
The firmware hang issue is not seen very often,
though it is still seen sometimes (once in 12
hours in local tests). The changes in the driver
,to interrupt the firmware, are needed when we
detect that firmware is stuck and when the host
queues are full and we begin to drop packets.
This is to ensure that the firmware does not
miss any PPA_RDY interrupts to cause the firmware
restart dont miss PPA_READY interrupt for SC2

Signed-off-by: Nishant Sarmukadam <nishants@marvell.com>
Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-05-24 13:18:22 -04:00

6169 lines
149 KiB
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/*
* drivers/net/wireless/mwl8k.c
* Driver for Marvell TOPDOG 802.11 Wireless cards
*
* Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc.
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/list.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/completion.h>
#include <linux/etherdevice.h>
#include <linux/slab.h>
#include <net/mac80211.h>
#include <linux/moduleparam.h>
#include <linux/firmware.h>
#include <linux/workqueue.h>
#define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
#define MWL8K_NAME KBUILD_MODNAME
#define MWL8K_VERSION "0.13"
/* Module parameters */
static bool ap_mode_default;
module_param(ap_mode_default, bool, 0);
MODULE_PARM_DESC(ap_mode_default,
"Set to 1 to make ap mode the default instead of sta mode");
/* Register definitions */
#define MWL8K_HIU_GEN_PTR 0x00000c10
#define MWL8K_MODE_STA 0x0000005a
#define MWL8K_MODE_AP 0x000000a5
#define MWL8K_HIU_INT_CODE 0x00000c14
#define MWL8K_FWSTA_READY 0xf0f1f2f4
#define MWL8K_FWAP_READY 0xf1f2f4a5
#define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
#define MWL8K_HIU_SCRATCH 0x00000c40
/* Host->device communications */
#define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18
#define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c
#define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20
#define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24
#define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28
#define MWL8K_H2A_INT_DUMMY (1 << 20)
#define MWL8K_H2A_INT_RESET (1 << 15)
#define MWL8K_H2A_INT_DOORBELL (1 << 1)
#define MWL8K_H2A_INT_PPA_READY (1 << 0)
/* Device->host communications */
#define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c
#define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30
#define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34
#define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38
#define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c
#define MWL8K_A2H_INT_DUMMY (1 << 20)
#define MWL8K_A2H_INT_BA_WATCHDOG (1 << 14)
#define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
#define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
#define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
#define MWL8K_A2H_INT_RADIO_ON (1 << 6)
#define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
#define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
#define MWL8K_A2H_INT_OPC_DONE (1 << 2)
#define MWL8K_A2H_INT_RX_READY (1 << 1)
#define MWL8K_A2H_INT_TX_DONE (1 << 0)
/* HW micro second timer register
* located at offset 0xA600. This
* will be used to timestamp tx
* packets.
*/
#define MWL8K_HW_TIMER_REGISTER 0x0000a600
#define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
MWL8K_A2H_INT_CHNL_SWITCHED | \
MWL8K_A2H_INT_QUEUE_EMPTY | \
MWL8K_A2H_INT_RADAR_DETECT | \
MWL8K_A2H_INT_RADIO_ON | \
MWL8K_A2H_INT_RADIO_OFF | \
MWL8K_A2H_INT_MAC_EVENT | \
MWL8K_A2H_INT_OPC_DONE | \
MWL8K_A2H_INT_RX_READY | \
MWL8K_A2H_INT_TX_DONE | \
MWL8K_A2H_INT_BA_WATCHDOG)
#define MWL8K_RX_QUEUES 1
#define MWL8K_TX_WMM_QUEUES 4
#define MWL8K_MAX_AMPDU_QUEUES 8
#define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
#define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
/* txpriorities are mapped with hw queues.
* Each hw queue has a txpriority.
*/
#define TOTAL_HW_TX_QUEUES 8
/* Each HW queue can have one AMPDU stream.
* But, because one of the hw queue is reserved,
* maximum AMPDU queues that can be created are
* one short of total tx queues.
*/
#define MWL8K_NUM_AMPDU_STREAMS (TOTAL_HW_TX_QUEUES - 1)
struct rxd_ops {
int rxd_size;
void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
__le16 *qos, s8 *noise);
};
struct mwl8k_device_info {
char *part_name;
char *helper_image;
char *fw_image_sta;
char *fw_image_ap;
struct rxd_ops *ap_rxd_ops;
u32 fw_api_ap;
};
struct mwl8k_rx_queue {
int rxd_count;
/* hw receives here */
int head;
/* refill descs here */
int tail;
void *rxd;
dma_addr_t rxd_dma;
struct {
struct sk_buff *skb;
DEFINE_DMA_UNMAP_ADDR(dma);
} *buf;
};
struct mwl8k_tx_queue {
/* hw transmits here */
int head;
/* sw appends here */
int tail;
unsigned int len;
struct mwl8k_tx_desc *txd;
dma_addr_t txd_dma;
struct sk_buff **skb;
};
enum {
AMPDU_NO_STREAM,
AMPDU_STREAM_NEW,
AMPDU_STREAM_IN_PROGRESS,
AMPDU_STREAM_ACTIVE,
};
struct mwl8k_ampdu_stream {
struct ieee80211_sta *sta;
u8 tid;
u8 state;
u8 idx;
};
struct mwl8k_priv {
struct ieee80211_hw *hw;
struct pci_dev *pdev;
int irq;
struct mwl8k_device_info *device_info;
void __iomem *sram;
void __iomem *regs;
/* firmware */
const struct firmware *fw_helper;
const struct firmware *fw_ucode;
/* hardware/firmware parameters */
bool ap_fw;
struct rxd_ops *rxd_ops;
struct ieee80211_supported_band band_24;
struct ieee80211_channel channels_24[14];
struct ieee80211_rate rates_24[13];
struct ieee80211_supported_band band_50;
struct ieee80211_channel channels_50[4];
struct ieee80211_rate rates_50[8];
u32 ap_macids_supported;
u32 sta_macids_supported;
/* Ampdu stream information */
u8 num_ampdu_queues;
spinlock_t stream_lock;
struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
struct work_struct watchdog_ba_handle;
/* firmware access */
struct mutex fw_mutex;
struct task_struct *fw_mutex_owner;
struct task_struct *hw_restart_owner;
int fw_mutex_depth;
struct completion *hostcmd_wait;
atomic_t watchdog_event_pending;
/* lock held over TX and TX reap */
spinlock_t tx_lock;
/* TX quiesce completion, protected by fw_mutex and tx_lock */
struct completion *tx_wait;
/* List of interfaces. */
u32 macids_used;
struct list_head vif_list;
/* power management status cookie from firmware */
u32 *cookie;
dma_addr_t cookie_dma;
u16 num_mcaddrs;
u8 hw_rev;
u32 fw_rev;
u32 caps;
/*
* Running count of TX packets in flight, to avoid
* iterating over the transmit rings each time.
*/
int pending_tx_pkts;
struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
u32 txq_offset[MWL8K_MAX_TX_QUEUES];
bool radio_on;
bool radio_short_preamble;
bool sniffer_enabled;
bool wmm_enabled;
/* XXX need to convert this to handle multiple interfaces */
bool capture_beacon;
u8 capture_bssid[ETH_ALEN];
struct sk_buff *beacon_skb;
/*
* This FJ worker has to be global as it is scheduled from the
* RX handler. At this point we don't know which interface it
* belongs to until the list of bssids waiting to complete join
* is checked.
*/
struct work_struct finalize_join_worker;
/* Tasklet to perform TX reclaim. */
struct tasklet_struct poll_tx_task;
/* Tasklet to perform RX. */
struct tasklet_struct poll_rx_task;
/* Most recently reported noise in dBm */
s8 noise;
/*
* preserve the queue configurations so they can be restored if/when
* the firmware image is swapped.
*/
struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
/* To perform the task of reloading the firmware */
struct work_struct fw_reload;
bool hw_restart_in_progress;
/* async firmware loading state */
unsigned fw_state;
char *fw_pref;
char *fw_alt;
bool is_8764;
struct completion firmware_loading_complete;
/* bitmap of running BSSes */
u32 running_bsses;
};
#define MAX_WEP_KEY_LEN 13
#define NUM_WEP_KEYS 4
/* Per interface specific private data */
struct mwl8k_vif {
struct list_head list;
struct ieee80211_vif *vif;
/* Firmware macid for this vif. */
int macid;
/* Non AMPDU sequence number assigned by driver. */
u16 seqno;
/* Saved WEP keys */
struct {
u8 enabled;
u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
} wep_key_conf[NUM_WEP_KEYS];
/* BSSID */
u8 bssid[ETH_ALEN];
/* A flag to indicate is HW crypto is enabled for this bssid */
bool is_hw_crypto_enabled;
};
#define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
#define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
struct tx_traffic_info {
u32 start_time;
u32 pkts;
};
#define MWL8K_MAX_TID 8
struct mwl8k_sta {
/* Index into station database. Returned by UPDATE_STADB. */
u8 peer_id;
u8 is_ampdu_allowed;
struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
};
#define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
static const struct ieee80211_channel mwl8k_channels_24[] = {
{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2412, .hw_value = 1, },
{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2417, .hw_value = 2, },
{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2422, .hw_value = 3, },
{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2427, .hw_value = 4, },
{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2432, .hw_value = 5, },
{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2437, .hw_value = 6, },
{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2442, .hw_value = 7, },
{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2447, .hw_value = 8, },
{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2452, .hw_value = 9, },
{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2457, .hw_value = 10, },
{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2462, .hw_value = 11, },
{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2467, .hw_value = 12, },
{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2472, .hw_value = 13, },
{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2484, .hw_value = 14, },
};
static const struct ieee80211_rate mwl8k_rates_24[] = {
{ .bitrate = 10, .hw_value = 2, },
{ .bitrate = 20, .hw_value = 4, },
{ .bitrate = 55, .hw_value = 11, },
{ .bitrate = 110, .hw_value = 22, },
{ .bitrate = 220, .hw_value = 44, },
{ .bitrate = 60, .hw_value = 12, },
{ .bitrate = 90, .hw_value = 18, },
{ .bitrate = 120, .hw_value = 24, },
{ .bitrate = 180, .hw_value = 36, },
{ .bitrate = 240, .hw_value = 48, },
{ .bitrate = 360, .hw_value = 72, },
{ .bitrate = 480, .hw_value = 96, },
{ .bitrate = 540, .hw_value = 108, },
};
static const struct ieee80211_channel mwl8k_channels_50[] = {
{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5180, .hw_value = 36, },
{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5200, .hw_value = 40, },
{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5220, .hw_value = 44, },
{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5240, .hw_value = 48, },
};
static const struct ieee80211_rate mwl8k_rates_50[] = {
{ .bitrate = 60, .hw_value = 12, },
{ .bitrate = 90, .hw_value = 18, },
{ .bitrate = 120, .hw_value = 24, },
{ .bitrate = 180, .hw_value = 36, },
{ .bitrate = 240, .hw_value = 48, },
{ .bitrate = 360, .hw_value = 72, },
{ .bitrate = 480, .hw_value = 96, },
{ .bitrate = 540, .hw_value = 108, },
};
/* Set or get info from Firmware */
#define MWL8K_CMD_GET 0x0000
#define MWL8K_CMD_SET 0x0001
#define MWL8K_CMD_SET_LIST 0x0002
/* Firmware command codes */
#define MWL8K_CMD_CODE_DNLD 0x0001
#define MWL8K_CMD_GET_HW_SPEC 0x0003
#define MWL8K_CMD_SET_HW_SPEC 0x0004
#define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
#define MWL8K_CMD_GET_STAT 0x0014
#define MWL8K_CMD_RADIO_CONTROL 0x001c
#define MWL8K_CMD_RF_TX_POWER 0x001e
#define MWL8K_CMD_TX_POWER 0x001f
#define MWL8K_CMD_RF_ANTENNA 0x0020
#define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */
#define MWL8K_CMD_SET_PRE_SCAN 0x0107
#define MWL8K_CMD_SET_POST_SCAN 0x0108
#define MWL8K_CMD_SET_RF_CHANNEL 0x010a
#define MWL8K_CMD_SET_AID 0x010d
#define MWL8K_CMD_SET_RATE 0x0110
#define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
#define MWL8K_CMD_RTS_THRESHOLD 0x0113
#define MWL8K_CMD_SET_SLOT 0x0114
#define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
#define MWL8K_CMD_SET_WMM_MODE 0x0123
#define MWL8K_CMD_MIMO_CONFIG 0x0125
#define MWL8K_CMD_USE_FIXED_RATE 0x0126
#define MWL8K_CMD_ENABLE_SNIFFER 0x0150
#define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */
#define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
#define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205
#define MWL8K_CMD_DEL_MAC_ADDR 0x0206 /* per-vif */
#define MWL8K_CMD_BSS_START 0x1100 /* per-vif */
#define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */
#define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */
#define MWL8K_CMD_UPDATE_STADB 0x1123
#define MWL8K_CMD_BASTREAM 0x1125
static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
{
u16 command = le16_to_cpu(cmd);
#define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
snprintf(buf, bufsize, "%s", #x);\
return buf;\
} while (0)
switch (command & ~0x8000) {
MWL8K_CMDNAME(CODE_DNLD);
MWL8K_CMDNAME(GET_HW_SPEC);
MWL8K_CMDNAME(SET_HW_SPEC);
MWL8K_CMDNAME(MAC_MULTICAST_ADR);
MWL8K_CMDNAME(GET_STAT);
MWL8K_CMDNAME(RADIO_CONTROL);
MWL8K_CMDNAME(RF_TX_POWER);
MWL8K_CMDNAME(TX_POWER);
MWL8K_CMDNAME(RF_ANTENNA);
MWL8K_CMDNAME(SET_BEACON);
MWL8K_CMDNAME(SET_PRE_SCAN);
MWL8K_CMDNAME(SET_POST_SCAN);
MWL8K_CMDNAME(SET_RF_CHANNEL);
MWL8K_CMDNAME(SET_AID);
MWL8K_CMDNAME(SET_RATE);
MWL8K_CMDNAME(SET_FINALIZE_JOIN);
MWL8K_CMDNAME(RTS_THRESHOLD);
MWL8K_CMDNAME(SET_SLOT);
MWL8K_CMDNAME(SET_EDCA_PARAMS);
MWL8K_CMDNAME(SET_WMM_MODE);
MWL8K_CMDNAME(MIMO_CONFIG);
MWL8K_CMDNAME(USE_FIXED_RATE);
MWL8K_CMDNAME(ENABLE_SNIFFER);
MWL8K_CMDNAME(SET_MAC_ADDR);
MWL8K_CMDNAME(SET_RATEADAPT_MODE);
MWL8K_CMDNAME(BSS_START);
MWL8K_CMDNAME(SET_NEW_STN);
MWL8K_CMDNAME(UPDATE_ENCRYPTION);
MWL8K_CMDNAME(UPDATE_STADB);
MWL8K_CMDNAME(BASTREAM);
MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
default:
snprintf(buf, bufsize, "0x%x", cmd);
}
#undef MWL8K_CMDNAME
return buf;
}
/* Hardware and firmware reset */
static void mwl8k_hw_reset(struct mwl8k_priv *priv)
{
iowrite32(MWL8K_H2A_INT_RESET,
priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
iowrite32(MWL8K_H2A_INT_RESET,
priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
msleep(20);
}
/* Release fw image */
static void mwl8k_release_fw(const struct firmware **fw)
{
if (*fw == NULL)
return;
release_firmware(*fw);
*fw = NULL;
}
static void mwl8k_release_firmware(struct mwl8k_priv *priv)
{
mwl8k_release_fw(&priv->fw_ucode);
mwl8k_release_fw(&priv->fw_helper);
}
/* states for asynchronous f/w loading */
static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
enum {
FW_STATE_INIT = 0,
FW_STATE_LOADING_PREF,
FW_STATE_LOADING_ALT,
FW_STATE_ERROR,
};
/* Request fw image */
static int mwl8k_request_fw(struct mwl8k_priv *priv,
const char *fname, const struct firmware **fw,
bool nowait)
{
/* release current image */
if (*fw != NULL)
mwl8k_release_fw(fw);
if (nowait)
return request_firmware_nowait(THIS_MODULE, 1, fname,
&priv->pdev->dev, GFP_KERNEL,
priv, mwl8k_fw_state_machine);
else
return request_firmware(fw, fname, &priv->pdev->dev);
}
static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
bool nowait)
{
struct mwl8k_device_info *di = priv->device_info;
int rc;
if (di->helper_image != NULL) {
if (nowait)
rc = mwl8k_request_fw(priv, di->helper_image,
&priv->fw_helper, true);
else
rc = mwl8k_request_fw(priv, di->helper_image,
&priv->fw_helper, false);
if (rc)
printk(KERN_ERR "%s: Error requesting helper fw %s\n",
pci_name(priv->pdev), di->helper_image);
if (rc || nowait)
return rc;
}
if (nowait) {
/*
* if we get here, no helper image is needed. Skip the
* FW_STATE_INIT state.
*/
priv->fw_state = FW_STATE_LOADING_PREF;
rc = mwl8k_request_fw(priv, fw_image,
&priv->fw_ucode,
true);
} else
rc = mwl8k_request_fw(priv, fw_image,
&priv->fw_ucode, false);
if (rc) {
printk(KERN_ERR "%s: Error requesting firmware file %s\n",
pci_name(priv->pdev), fw_image);
mwl8k_release_fw(&priv->fw_helper);
return rc;
}
return 0;
}
struct mwl8k_cmd_pkt {
__le16 code;
__le16 length;
__u8 seq_num;
__u8 macid;
__le16 result;
char payload[0];
} __packed;
/*
* Firmware loading.
*/
static int
mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
{
void __iomem *regs = priv->regs;
dma_addr_t dma_addr;
int loops;
dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
if (pci_dma_mapping_error(priv->pdev, dma_addr))
return -ENOMEM;
iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
iowrite32(0, regs + MWL8K_HIU_INT_CODE);
iowrite32(MWL8K_H2A_INT_DOORBELL,
regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
iowrite32(MWL8K_H2A_INT_DUMMY,
regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
loops = 1000;
do {
u32 int_code;
if (priv->is_8764) {
int_code = ioread32(regs +
MWL8K_HIU_H2A_INTERRUPT_STATUS);
if (int_code == 0)
break;
} else {
int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
iowrite32(0, regs + MWL8K_HIU_INT_CODE);
break;
}
}
cond_resched();
udelay(1);
} while (--loops);
pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
return loops ? 0 : -ETIMEDOUT;
}
static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
const u8 *data, size_t length)
{
struct mwl8k_cmd_pkt *cmd;
int done;
int rc = 0;
cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
cmd->seq_num = 0;
cmd->macid = 0;
cmd->result = 0;
done = 0;
while (length) {
int block_size = length > 256 ? 256 : length;
memcpy(cmd->payload, data + done, block_size);
cmd->length = cpu_to_le16(block_size);
rc = mwl8k_send_fw_load_cmd(priv, cmd,
sizeof(*cmd) + block_size);
if (rc)
break;
done += block_size;
length -= block_size;
}
if (!rc) {
cmd->length = 0;
rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
}
kfree(cmd);
return rc;
}
static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
const u8 *data, size_t length)
{
unsigned char *buffer;
int may_continue, rc = 0;
u32 done, prev_block_size;
buffer = kmalloc(1024, GFP_KERNEL);
if (buffer == NULL)
return -ENOMEM;
done = 0;
prev_block_size = 0;
may_continue = 1000;
while (may_continue > 0) {
u32 block_size;
block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
if (block_size & 1) {
block_size &= ~1;
may_continue--;
} else {
done += prev_block_size;
length -= prev_block_size;
}
if (block_size > 1024 || block_size > length) {
rc = -EOVERFLOW;
break;
}
if (length == 0) {
rc = 0;
break;
}
if (block_size == 0) {
rc = -EPROTO;
may_continue--;
udelay(1);
continue;
}
prev_block_size = block_size;
memcpy(buffer, data + done, block_size);
rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
if (rc)
break;
}
if (!rc && length != 0)
rc = -EREMOTEIO;
kfree(buffer);
return rc;
}
static int mwl8k_load_firmware(struct ieee80211_hw *hw)
{
struct mwl8k_priv *priv = hw->priv;
const struct firmware *fw = priv->fw_ucode;
int rc;
int loops;
if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) {
const struct firmware *helper = priv->fw_helper;
if (helper == NULL) {
printk(KERN_ERR "%s: helper image needed but none "
"given\n", pci_name(priv->pdev));
return -EINVAL;
}
rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
if (rc) {
printk(KERN_ERR "%s: unable to load firmware "
"helper image\n", pci_name(priv->pdev));
return rc;
}
msleep(20);
rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
} else {
if (priv->is_8764)
rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
else
rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
}
if (rc) {
printk(KERN_ERR "%s: unable to load firmware image\n",
pci_name(priv->pdev));
return rc;
}
iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
loops = 500000;
do {
u32 ready_code;
ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
if (ready_code == MWL8K_FWAP_READY) {
priv->ap_fw = true;
break;
} else if (ready_code == MWL8K_FWSTA_READY) {
priv->ap_fw = false;
break;
}
cond_resched();
udelay(1);
} while (--loops);
return loops ? 0 : -ETIMEDOUT;
}
/* DMA header used by firmware and hardware. */
struct mwl8k_dma_data {
__le16 fwlen;
struct ieee80211_hdr wh;
char data[0];
} __packed;
/* Routines to add/remove DMA header from skb. */
static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
{
struct mwl8k_dma_data *tr;
int hdrlen;
tr = (struct mwl8k_dma_data *)skb->data;
hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
if (hdrlen != sizeof(tr->wh)) {
if (ieee80211_is_data_qos(tr->wh.frame_control)) {
memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
*((__le16 *)(tr->data - 2)) = qos;
} else {
memmove(tr->data - hdrlen, &tr->wh, hdrlen);
}
}
if (hdrlen != sizeof(*tr))
skb_pull(skb, sizeof(*tr) - hdrlen);
}
#define REDUCED_TX_HEADROOM 8
static void
mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
int head_pad, int tail_pad)
{
struct ieee80211_hdr *wh;
int hdrlen;
int reqd_hdrlen;
struct mwl8k_dma_data *tr;
/*
* Add a firmware DMA header; the firmware requires that we
* present a 2-byte payload length followed by a 4-address
* header (without QoS field), followed (optionally) by any
* WEP/ExtIV header (but only filled in for CCMP).
*/
wh = (struct ieee80211_hdr *)skb->data;
hdrlen = ieee80211_hdrlen(wh->frame_control);
/*
* Check if skb_resize is required because of
* tx_headroom adjustment.
*/
if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
+ REDUCED_TX_HEADROOM))) {
if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
wiphy_err(priv->hw->wiphy,
"Failed to reallocate TX buffer\n");
return;
}
skb->truesize += REDUCED_TX_HEADROOM;
}
reqd_hdrlen = sizeof(*tr) + head_pad;
if (hdrlen != reqd_hdrlen)
skb_push(skb, reqd_hdrlen - hdrlen);
if (ieee80211_is_data_qos(wh->frame_control))
hdrlen -= IEEE80211_QOS_CTL_LEN;
tr = (struct mwl8k_dma_data *)skb->data;
if (wh != &tr->wh)
memmove(&tr->wh, wh, hdrlen);
if (hdrlen != sizeof(tr->wh))
memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
/*
* Firmware length is the length of the fully formed "802.11
* payload". That is, everything except for the 802.11 header.
* This includes all crypto material including the MIC.
*/
tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
}
static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
struct sk_buff *skb)
{
struct ieee80211_hdr *wh;
struct ieee80211_tx_info *tx_info;
struct ieee80211_key_conf *key_conf;
int data_pad;
int head_pad = 0;
wh = (struct ieee80211_hdr *)skb->data;
tx_info = IEEE80211_SKB_CB(skb);
key_conf = NULL;
if (ieee80211_is_data(wh->frame_control))
key_conf = tx_info->control.hw_key;
/*
* Make sure the packet header is in the DMA header format (4-address
* without QoS), and add head & tail padding when HW crypto is enabled.
*
* We have the following trailer padding requirements:
* - WEP: 4 trailer bytes (ICV)
* - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
* - CCMP: 8 trailer bytes (MIC)
*/
data_pad = 0;
if (key_conf != NULL) {
head_pad = key_conf->iv_len;
switch (key_conf->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
data_pad = 4;
break;
case WLAN_CIPHER_SUITE_TKIP:
data_pad = 12;
break;
case WLAN_CIPHER_SUITE_CCMP:
data_pad = 8;
break;
}
}
mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
}
/*
* Packet reception for 88w8366/88w8764 AP firmware.
*/
struct mwl8k_rxd_ap {
__le16 pkt_len;
__u8 sq2;
__u8 rate;
__le32 pkt_phys_addr;
__le32 next_rxd_phys_addr;
__le16 qos_control;
__le16 htsig2;
__le32 hw_rssi_info;
__le32 hw_noise_floor_info;
__u8 noise_floor;
__u8 pad0[3];
__u8 rssi;
__u8 rx_status;
__u8 channel;
__u8 rx_ctrl;
} __packed;
#define MWL8K_AP_RATE_INFO_MCS_FORMAT 0x80
#define MWL8K_AP_RATE_INFO_40MHZ 0x40
#define MWL8K_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
#define MWL8K_AP_RX_CTRL_OWNED_BY_HOST 0x80
/* 8366/8764 AP rx_status bits */
#define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
#define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
#define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr)
{
struct mwl8k_rxd_ap *rxd = _rxd;
rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST;
}
static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len)
{
struct mwl8k_rxd_ap *rxd = _rxd;
rxd->pkt_len = cpu_to_le16(len);
rxd->pkt_phys_addr = cpu_to_le32(addr);
wmb();
rxd->rx_ctrl = 0;
}
static int
mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status,
__le16 *qos, s8 *noise)
{
struct mwl8k_rxd_ap *rxd = _rxd;
if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST))
return -1;
rmb();
memset(status, 0, sizeof(*status));
status->signal = -rxd->rssi;
*noise = -rxd->noise_floor;
if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) {
status->flag |= RX_FLAG_HT;
if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ)
status->flag |= RX_FLAG_40MHZ;
status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate);
} else {
int i;
for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
if (mwl8k_rates_24[i].hw_value == rxd->rate) {
status->rate_idx = i;
break;
}
}
}
if (rxd->channel > 14) {
status->band = IEEE80211_BAND_5GHZ;
if (!(status->flag & RX_FLAG_HT))
status->rate_idx -= 5;
} else {
status->band = IEEE80211_BAND_2GHZ;
}
status->freq = ieee80211_channel_to_frequency(rxd->channel,
status->band);
*qos = rxd->qos_control;
if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
(rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) &&
(rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
status->flag |= RX_FLAG_MMIC_ERROR;
return le16_to_cpu(rxd->pkt_len);
}
static struct rxd_ops rxd_ap_ops = {
.rxd_size = sizeof(struct mwl8k_rxd_ap),
.rxd_init = mwl8k_rxd_ap_init,
.rxd_refill = mwl8k_rxd_ap_refill,
.rxd_process = mwl8k_rxd_ap_process,
};
/*
* Packet reception for STA firmware.
*/
struct mwl8k_rxd_sta {
__le16 pkt_len;
__u8 link_quality;
__u8 noise_level;
__le32 pkt_phys_addr;
__le32 next_rxd_phys_addr;
__le16 qos_control;
__le16 rate_info;
__le32 pad0[4];
__u8 rssi;
__u8 channel;
__le16 pad1;
__u8 rx_ctrl;
__u8 rx_status;
__u8 pad2[2];
} __packed;
#define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
#define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
#define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
#define MWL8K_STA_RATE_INFO_40MHZ 0x0004
#define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
#define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
#define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
#define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
/* ICV=0 or MIC=1 */
#define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
/* Key is uploaded only in failure case */
#define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
{
struct mwl8k_rxd_sta *rxd = _rxd;
rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
}
static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
{
struct mwl8k_rxd_sta *rxd = _rxd;
rxd->pkt_len = cpu_to_le16(len);
rxd->pkt_phys_addr = cpu_to_le32(addr);
wmb();
rxd->rx_ctrl = 0;
}
static int
mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
__le16 *qos, s8 *noise)
{
struct mwl8k_rxd_sta *rxd = _rxd;
u16 rate_info;
if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
return -1;
rmb();
rate_info = le16_to_cpu(rxd->rate_info);
memset(status, 0, sizeof(*status));
status->signal = -rxd->rssi;
*noise = -rxd->noise_level;
status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
status->flag |= RX_FLAG_SHORTPRE;
if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
status->flag |= RX_FLAG_40MHZ;
if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
status->flag |= RX_FLAG_SHORT_GI;
if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
status->flag |= RX_FLAG_HT;
if (rxd->channel > 14) {
status->band = IEEE80211_BAND_5GHZ;
if (!(status->flag & RX_FLAG_HT))
status->rate_idx -= 5;
} else {
status->band = IEEE80211_BAND_2GHZ;
}
status->freq = ieee80211_channel_to_frequency(rxd->channel,
status->band);
*qos = rxd->qos_control;
if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
status->flag |= RX_FLAG_MMIC_ERROR;
return le16_to_cpu(rxd->pkt_len);
}
static struct rxd_ops rxd_sta_ops = {
.rxd_size = sizeof(struct mwl8k_rxd_sta),
.rxd_init = mwl8k_rxd_sta_init,
.rxd_refill = mwl8k_rxd_sta_refill,
.rxd_process = mwl8k_rxd_sta_process,
};
#define MWL8K_RX_DESCS 256
#define MWL8K_RX_MAXSZ 3800
static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_rx_queue *rxq = priv->rxq + index;
int size;
int i;
rxq->rxd_count = 0;
rxq->head = 0;
rxq->tail = 0;
size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
if (rxq->rxd == NULL) {
wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
return -ENOMEM;
}
memset(rxq->rxd, 0, size);
rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
if (rxq->buf == NULL) {
pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
return -ENOMEM;
}
for (i = 0; i < MWL8K_RX_DESCS; i++) {
int desc_size;
void *rxd;
int nexti;
dma_addr_t next_dma_addr;
desc_size = priv->rxd_ops->rxd_size;
rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
nexti = i + 1;
if (nexti == MWL8K_RX_DESCS)
nexti = 0;
next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
priv->rxd_ops->rxd_init(rxd, next_dma_addr);
}
return 0;
}
static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_rx_queue *rxq = priv->rxq + index;
int refilled;
refilled = 0;
while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
struct sk_buff *skb;
dma_addr_t addr;
int rx;
void *rxd;
skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
if (skb == NULL)
break;
addr = pci_map_single(priv->pdev, skb->data,
MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
rxq->rxd_count++;
rx = rxq->tail++;
if (rxq->tail == MWL8K_RX_DESCS)
rxq->tail = 0;
rxq->buf[rx].skb = skb;
dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
refilled++;
}
return refilled;
}
/* Must be called only when the card's reception is completely halted */
static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_rx_queue *rxq = priv->rxq + index;
int i;
if (rxq->rxd == NULL)
return;
for (i = 0; i < MWL8K_RX_DESCS; i++) {
if (rxq->buf[i].skb != NULL) {
pci_unmap_single(priv->pdev,
dma_unmap_addr(&rxq->buf[i], dma),
MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
dma_unmap_addr_set(&rxq->buf[i], dma, 0);
kfree_skb(rxq->buf[i].skb);
rxq->buf[i].skb = NULL;
}
}
kfree(rxq->buf);
rxq->buf = NULL;
pci_free_consistent(priv->pdev,
MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
rxq->rxd, rxq->rxd_dma);
rxq->rxd = NULL;
}
/*
* Scan a list of BSSIDs to process for finalize join.
* Allows for extension to process multiple BSSIDs.
*/
static inline int
mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
{
return priv->capture_beacon &&
ieee80211_is_beacon(wh->frame_control) &&
ether_addr_equal(wh->addr3, priv->capture_bssid);
}
static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
struct sk_buff *skb)
{
struct mwl8k_priv *priv = hw->priv;
priv->capture_beacon = false;
memset(priv->capture_bssid, 0, ETH_ALEN);
/*
* Use GFP_ATOMIC as rxq_process is called from
* the primary interrupt handler, memory allocation call
* must not sleep.
*/
priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
if (priv->beacon_skb != NULL)
ieee80211_queue_work(hw, &priv->finalize_join_worker);
}
static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
u8 *bssid)
{
struct mwl8k_vif *mwl8k_vif;
list_for_each_entry(mwl8k_vif,
vif_list, list) {
if (memcmp(bssid, mwl8k_vif->bssid,
ETH_ALEN) == 0)
return mwl8k_vif;
}
return NULL;
}
static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_vif *mwl8k_vif = NULL;
struct mwl8k_rx_queue *rxq = priv->rxq + index;
int processed;
processed = 0;
while (rxq->rxd_count && limit--) {
struct sk_buff *skb;
void *rxd;
int pkt_len;
struct ieee80211_rx_status status;
struct ieee80211_hdr *wh;
__le16 qos;
skb = rxq->buf[rxq->head].skb;
if (skb == NULL)
break;
rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
&priv->noise);
if (pkt_len < 0)
break;
rxq->buf[rxq->head].skb = NULL;
pci_unmap_single(priv->pdev,
dma_unmap_addr(&rxq->buf[rxq->head], dma),
MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
rxq->head++;
if (rxq->head == MWL8K_RX_DESCS)
rxq->head = 0;
rxq->rxd_count--;
wh = &((struct mwl8k_dma_data *)skb->data)->wh;
/*
* Check for a pending join operation. Save a
* copy of the beacon and schedule a tasklet to
* send a FINALIZE_JOIN command to the firmware.
*/
if (mwl8k_capture_bssid(priv, (void *)skb->data))
mwl8k_save_beacon(hw, skb);
if (ieee80211_has_protected(wh->frame_control)) {
/* Check if hw crypto has been enabled for
* this bss. If yes, set the status flags
* accordingly
*/
mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
wh->addr1);
if (mwl8k_vif != NULL &&
mwl8k_vif->is_hw_crypto_enabled) {
/*
* When MMIC ERROR is encountered
* by the firmware, payload is
* dropped and only 32 bytes of
* mwl8k Firmware header is sent
* to the host.
*
* We need to add four bytes of
* key information. In it
* MAC80211 expects keyidx set to
* 0 for triggering Counter
* Measure of MMIC failure.
*/
if (status.flag & RX_FLAG_MMIC_ERROR) {
struct mwl8k_dma_data *tr;
tr = (struct mwl8k_dma_data *)skb->data;
memset((void *)&(tr->data), 0, 4);
pkt_len += 4;
}
if (!ieee80211_is_auth(wh->frame_control))
status.flag |= RX_FLAG_IV_STRIPPED |
RX_FLAG_DECRYPTED |
RX_FLAG_MMIC_STRIPPED;
}
}
skb_put(skb, pkt_len);
mwl8k_remove_dma_header(skb, qos);
memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
ieee80211_rx_irqsafe(hw, skb);
processed++;
}
return processed;
}
/*
* Packet transmission.
*/
#define MWL8K_TXD_STATUS_OK 0x00000001
#define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
#define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
#define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
#define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
#define MWL8K_QOS_QLEN_UNSPEC 0xff00
#define MWL8K_QOS_ACK_POLICY_MASK 0x0060
#define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
#define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
#define MWL8K_QOS_EOSP 0x0010
struct mwl8k_tx_desc {
__le32 status;
__u8 data_rate;
__u8 tx_priority;
__le16 qos_control;
__le32 pkt_phys_addr;
__le16 pkt_len;
__u8 dest_MAC_addr[ETH_ALEN];
__le32 next_txd_phys_addr;
__le32 timestamp;
__le16 rate_info;
__u8 peer_id;
__u8 tx_frag_cnt;
} __packed;
#define MWL8K_TX_DESCS 128
static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_tx_queue *txq = priv->txq + index;
int size;
int i;
txq->len = 0;
txq->head = 0;
txq->tail = 0;
size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
if (txq->txd == NULL) {
wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
return -ENOMEM;
}
memset(txq->txd, 0, size);
txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
if (txq->skb == NULL) {
pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
return -ENOMEM;
}
for (i = 0; i < MWL8K_TX_DESCS; i++) {
struct mwl8k_tx_desc *tx_desc;
int nexti;
tx_desc = txq->txd + i;
nexti = (i + 1) % MWL8K_TX_DESCS;
tx_desc->status = 0;
tx_desc->next_txd_phys_addr =
cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
}
return 0;
}
static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
{
iowrite32(MWL8K_H2A_INT_PPA_READY,
priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
iowrite32(MWL8K_H2A_INT_DUMMY,
priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
ioread32(priv->regs + MWL8K_HIU_INT_CODE);
}
static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
{
struct mwl8k_priv *priv = hw->priv;
int i;
for (i = 0; i < mwl8k_tx_queues(priv); i++) {
struct mwl8k_tx_queue *txq = priv->txq + i;
int fw_owned = 0;
int drv_owned = 0;
int unused = 0;
int desc;
for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
u32 status;
status = le32_to_cpu(tx_desc->status);
if (status & MWL8K_TXD_STATUS_FW_OWNED)
fw_owned++;
else
drv_owned++;
if (tx_desc->pkt_len == 0)
unused++;
}
wiphy_err(hw->wiphy,
"txq[%d] len=%d head=%d tail=%d "
"fw_owned=%d drv_owned=%d unused=%d\n",
i,
txq->len, txq->head, txq->tail,
fw_owned, drv_owned, unused);
}
}
/*
* Must be called with priv->fw_mutex held and tx queues stopped.
*/
#define MWL8K_TX_WAIT_TIMEOUT_MS 5000
static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
{
struct mwl8k_priv *priv = hw->priv;
DECLARE_COMPLETION_ONSTACK(tx_wait);
int retry;
int rc;
might_sleep();
/* Since fw restart is in progress, allow only the firmware
* commands from the restart code and block the other
* commands since they are going to fail in any case since
* the firmware has crashed
*/
if (priv->hw_restart_in_progress) {
if (priv->hw_restart_owner == current)
return 0;
else
return -EBUSY;
}
if (atomic_read(&priv->watchdog_event_pending))
return 0;
/*
* The TX queues are stopped at this point, so this test
* doesn't need to take ->tx_lock.
*/
if (!priv->pending_tx_pkts)
return 0;
retry = 1;
rc = 0;
spin_lock_bh(&priv->tx_lock);
priv->tx_wait = &tx_wait;
while (!rc) {
int oldcount;
unsigned long timeout;
oldcount = priv->pending_tx_pkts;
spin_unlock_bh(&priv->tx_lock);
timeout = wait_for_completion_timeout(&tx_wait,
msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
if (atomic_read(&priv->watchdog_event_pending)) {
spin_lock_bh(&priv->tx_lock);
priv->tx_wait = NULL;
spin_unlock_bh(&priv->tx_lock);
return 0;
}
spin_lock_bh(&priv->tx_lock);
if (timeout || !priv->pending_tx_pkts) {
WARN_ON(priv->pending_tx_pkts);
if (retry)
wiphy_notice(hw->wiphy, "tx rings drained\n");
break;
}
if (retry) {
mwl8k_tx_start(priv);
retry = 0;
continue;
}
if (priv->pending_tx_pkts < oldcount) {
wiphy_notice(hw->wiphy,
"waiting for tx rings to drain (%d -> %d pkts)\n",
oldcount, priv->pending_tx_pkts);
retry = 1;
continue;
}
priv->tx_wait = NULL;
wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
MWL8K_TX_WAIT_TIMEOUT_MS);
mwl8k_dump_tx_rings(hw);
priv->hw_restart_in_progress = true;
ieee80211_queue_work(hw, &priv->fw_reload);
rc = -ETIMEDOUT;
}
priv->tx_wait = NULL;
spin_unlock_bh(&priv->tx_lock);
return rc;
}
#define MWL8K_TXD_SUCCESS(status) \
((status) & (MWL8K_TXD_STATUS_OK | \
MWL8K_TXD_STATUS_OK_RETRY | \
MWL8K_TXD_STATUS_OK_MORE_RETRY))
static int mwl8k_tid_queue_mapping(u8 tid)
{
BUG_ON(tid > 7);
switch (tid) {
case 0:
case 3:
return IEEE80211_AC_BE;
break;
case 1:
case 2:
return IEEE80211_AC_BK;
break;
case 4:
case 5:
return IEEE80211_AC_VI;
break;
case 6:
case 7:
return IEEE80211_AC_VO;
break;
default:
return -1;
break;
}
}
/* The firmware will fill in the rate information
* for each packet that gets queued in the hardware
* and these macros will interpret that info.
*/
#define RI_FORMAT(a) (a & 0x0001)
#define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3)
static int
mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_tx_queue *txq = priv->txq + index;
int processed;
processed = 0;
while (txq->len > 0 && limit--) {
int tx;
struct mwl8k_tx_desc *tx_desc;
unsigned long addr;
int size;
struct sk_buff *skb;
struct ieee80211_tx_info *info;
u32 status;
struct ieee80211_sta *sta;
struct mwl8k_sta *sta_info = NULL;
u16 rate_info;
struct ieee80211_hdr *wh;
tx = txq->head;
tx_desc = txq->txd + tx;
status = le32_to_cpu(tx_desc->status);
if (status & MWL8K_TXD_STATUS_FW_OWNED) {
if (!force)
break;
tx_desc->status &=
~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
}
txq->head = (tx + 1) % MWL8K_TX_DESCS;
BUG_ON(txq->len == 0);
txq->len--;
priv->pending_tx_pkts--;
addr = le32_to_cpu(tx_desc->pkt_phys_addr);
size = le16_to_cpu(tx_desc->pkt_len);
skb = txq->skb[tx];
txq->skb[tx] = NULL;
BUG_ON(skb == NULL);
pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
mwl8k_remove_dma_header(skb, tx_desc->qos_control);
wh = (struct ieee80211_hdr *) skb->data;
/* Mark descriptor as unused */
tx_desc->pkt_phys_addr = 0;
tx_desc->pkt_len = 0;
info = IEEE80211_SKB_CB(skb);
if (ieee80211_is_data(wh->frame_control)) {
rcu_read_lock();
sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
wh->addr2);
if (sta) {
sta_info = MWL8K_STA(sta);
BUG_ON(sta_info == NULL);
rate_info = le16_to_cpu(tx_desc->rate_info);
/* If rate is < 6.5 Mpbs for an ht station
* do not form an ampdu. If the station is a
* legacy station (format = 0), do not form an
* ampdu
*/
if (RI_RATE_ID_MCS(rate_info) < 1 ||
RI_FORMAT(rate_info) == 0) {
sta_info->is_ampdu_allowed = false;
} else {
sta_info->is_ampdu_allowed = true;
}
}
rcu_read_unlock();
}
ieee80211_tx_info_clear_status(info);
/* Rate control is happening in the firmware.
* Ensure no tx rate is being reported.
*/
info->status.rates[0].idx = -1;
info->status.rates[0].count = 1;
if (MWL8K_TXD_SUCCESS(status))
info->flags |= IEEE80211_TX_STAT_ACK;
ieee80211_tx_status_irqsafe(hw, skb);
processed++;
}
return processed;
}
/* must be called only when the card's transmit is completely halted */
static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_tx_queue *txq = priv->txq + index;
if (txq->txd == NULL)
return;
mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
kfree(txq->skb);
txq->skb = NULL;
pci_free_consistent(priv->pdev,
MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
txq->txd, txq->txd_dma);
txq->txd = NULL;
}
/* caller must hold priv->stream_lock when calling the stream functions */
static struct mwl8k_ampdu_stream *
mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
{
struct mwl8k_ampdu_stream *stream;
struct mwl8k_priv *priv = hw->priv;
int i;
for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
stream = &priv->ampdu[i];
if (stream->state == AMPDU_NO_STREAM) {
stream->sta = sta;
stream->state = AMPDU_STREAM_NEW;
stream->tid = tid;
stream->idx = i;
wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
sta->addr, tid);
return stream;
}
}
return NULL;
}
static int
mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
{
int ret;
/* if the stream has already been started, don't start it again */
if (stream->state != AMPDU_STREAM_NEW)
return 0;
ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
if (ret)
wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
"%d\n", stream->sta->addr, stream->tid, ret);
else
wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
stream->sta->addr, stream->tid);
return ret;
}
static void
mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
{
wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
stream->tid);
memset(stream, 0, sizeof(*stream));
}
static struct mwl8k_ampdu_stream *
mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
{
struct mwl8k_priv *priv = hw->priv;
int i;
for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
struct mwl8k_ampdu_stream *stream;
stream = &priv->ampdu[i];
if (stream->state == AMPDU_NO_STREAM)
continue;
if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
stream->tid == tid)
return stream;
}
return NULL;
}
#define MWL8K_AMPDU_PACKET_THRESHOLD 64
static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
{
struct mwl8k_sta *sta_info = MWL8K_STA(sta);
struct tx_traffic_info *tx_stats;
BUG_ON(tid >= MWL8K_MAX_TID);
tx_stats = &sta_info->tx_stats[tid];
return sta_info->is_ampdu_allowed &&
tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
}
static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
{
struct mwl8k_sta *sta_info = MWL8K_STA(sta);
struct tx_traffic_info *tx_stats;
BUG_ON(tid >= MWL8K_MAX_TID);
tx_stats = &sta_info->tx_stats[tid];
if (tx_stats->start_time == 0)
tx_stats->start_time = jiffies;
/* reset the packet count after each second elapses. If the number of
* packets ever exceeds the ampdu_min_traffic threshold, we will allow
* an ampdu stream to be started.
*/
if (jiffies - tx_stats->start_time > HZ) {
tx_stats->pkts = 0;
tx_stats->start_time = 0;
} else
tx_stats->pkts++;
}
/* The hardware ampdu queues start from 5.
* txpriorities for ampdu queues are
* 5 6 7 0 1 2 3 4 ie., queue 5 is highest
* and queue 3 is lowest (queue 4 is reserved)
*/
#define BA_QUEUE 5
static void
mwl8k_txq_xmit(struct ieee80211_hw *hw,
int index,
struct ieee80211_sta *sta,
struct sk_buff *skb)
{
struct mwl8k_priv *priv = hw->priv;
struct ieee80211_tx_info *tx_info;
struct mwl8k_vif *mwl8k_vif;
struct ieee80211_hdr *wh;
struct mwl8k_tx_queue *txq;
struct mwl8k_tx_desc *tx;
dma_addr_t dma;
u32 txstatus;
u8 txdatarate;
u16 qos;
int txpriority;
u8 tid = 0;
struct mwl8k_ampdu_stream *stream = NULL;
bool start_ba_session = false;
bool mgmtframe = false;
struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
bool eapol_frame = false;
wh = (struct ieee80211_hdr *)skb->data;
if (ieee80211_is_data_qos(wh->frame_control))
qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
else
qos = 0;
if (skb->protocol == cpu_to_be16(ETH_P_PAE))
eapol_frame = true;
if (ieee80211_is_mgmt(wh->frame_control))
mgmtframe = true;
if (priv->ap_fw)
mwl8k_encapsulate_tx_frame(priv, skb);
else
mwl8k_add_dma_header(priv, skb, 0, 0);
wh = &((struct mwl8k_dma_data *)skb->data)->wh;
tx_info = IEEE80211_SKB_CB(skb);
mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
mwl8k_vif->seqno += 0x10;
}
/* Setup firmware control bit fields for each frame type. */
txstatus = 0;
txdatarate = 0;
if (ieee80211_is_mgmt(wh->frame_control) ||
ieee80211_is_ctl(wh->frame_control)) {
txdatarate = 0;
qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
} else if (ieee80211_is_data(wh->frame_control)) {
txdatarate = 1;
if (is_multicast_ether_addr(wh->addr1))
txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
else
qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
}
/* Queue ADDBA request in the respective data queue. While setting up
* the ampdu stream, mac80211 queues further packets for that
* particular ra/tid pair. However, packets piled up in the hardware
* for that ra/tid pair will still go out. ADDBA request and the
* related data packets going out from different queues asynchronously
* will cause a shift in the receiver window which might result in
* ampdu packets getting dropped at the receiver after the stream has
* been setup.
*/
if (unlikely(ieee80211_is_action(wh->frame_control) &&
mgmt->u.action.category == WLAN_CATEGORY_BACK &&
mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
priv->ap_fw)) {
u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
index = mwl8k_tid_queue_mapping(tid);
}
txpriority = index;
if (priv->ap_fw && sta && sta->ht_cap.ht_supported && !eapol_frame &&
ieee80211_is_data_qos(wh->frame_control)) {
tid = qos & 0xf;
mwl8k_tx_count_packet(sta, tid);
spin_lock(&priv->stream_lock);
stream = mwl8k_lookup_stream(hw, sta->addr, tid);
if (stream != NULL) {
if (stream->state == AMPDU_STREAM_ACTIVE) {
WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK));
txpriority = (BA_QUEUE + stream->idx) %
TOTAL_HW_TX_QUEUES;
if (stream->idx <= 1)
index = stream->idx +
MWL8K_TX_WMM_QUEUES;
} else if (stream->state == AMPDU_STREAM_NEW) {
/* We get here if the driver sends us packets
* after we've initiated a stream, but before
* our ampdu_action routine has been called
* with IEEE80211_AMPDU_TX_START to get the SSN
* for the ADDBA request. So this packet can
* go out with no risk of sequence number
* mismatch. No special handling is required.
*/
} else {
/* Drop packets that would go out after the
* ADDBA request was sent but before the ADDBA
* response is received. If we don't do this,
* the recipient would probably receive it
* after the ADDBA request with SSN 0. This
* will cause the recipient's BA receive window
* to shift, which would cause the subsequent
* packets in the BA stream to be discarded.
* mac80211 queues our packets for us in this
* case, so this is really just a safety check.
*/
wiphy_warn(hw->wiphy,
"Cannot send packet while ADDBA "
"dialog is underway.\n");
spin_unlock(&priv->stream_lock);
dev_kfree_skb(skb);
return;
}
} else {
/* Defer calling mwl8k_start_stream so that the current
* skb can go out before the ADDBA request. This
* prevents sequence number mismatch at the recepient
* as described above.
*/
if (mwl8k_ampdu_allowed(sta, tid)) {
stream = mwl8k_add_stream(hw, sta, tid);
if (stream != NULL)
start_ba_session = true;
}
}
spin_unlock(&priv->stream_lock);
} else {
qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
}
dma = pci_map_single(priv->pdev, skb->data,
skb->len, PCI_DMA_TODEVICE);
if (pci_dma_mapping_error(priv->pdev, dma)) {
wiphy_debug(hw->wiphy,
"failed to dma map skb, dropping TX frame.\n");
if (start_ba_session) {
spin_lock(&priv->stream_lock);
mwl8k_remove_stream(hw, stream);
spin_unlock(&priv->stream_lock);
}
dev_kfree_skb(skb);
return;
}
spin_lock_bh(&priv->tx_lock);
txq = priv->txq + index;
/* Mgmt frames that go out frequently are probe
* responses. Other mgmt frames got out relatively
* infrequently. Hence reserve 2 buffers so that
* other mgmt frames do not get dropped due to an
* already queued probe response in one of the
* reserved buffers.
*/
if (txq->len >= MWL8K_TX_DESCS - 2) {
if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
if (start_ba_session) {
spin_lock(&priv->stream_lock);
mwl8k_remove_stream(hw, stream);
spin_unlock(&priv->stream_lock);
}
mwl8k_tx_start(priv);
spin_unlock_bh(&priv->tx_lock);
pci_unmap_single(priv->pdev, dma, skb->len,
PCI_DMA_TODEVICE);
dev_kfree_skb(skb);
return;
}
}
BUG_ON(txq->skb[txq->tail] != NULL);
txq->skb[txq->tail] = skb;
tx = txq->txd + txq->tail;
tx->data_rate = txdatarate;
tx->tx_priority = txpriority;
tx->qos_control = cpu_to_le16(qos);
tx->pkt_phys_addr = cpu_to_le32(dma);
tx->pkt_len = cpu_to_le16(skb->len);
tx->rate_info = 0;
if (!priv->ap_fw && sta != NULL)
tx->peer_id = MWL8K_STA(sta)->peer_id;
else
tx->peer_id = 0;
if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)
tx->timestamp = cpu_to_le32(ioread32(priv->regs +
MWL8K_HW_TIMER_REGISTER));
else
tx->timestamp = 0;
wmb();
tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
txq->len++;
priv->pending_tx_pkts++;
txq->tail++;
if (txq->tail == MWL8K_TX_DESCS)
txq->tail = 0;
mwl8k_tx_start(priv);
spin_unlock_bh(&priv->tx_lock);
/* Initiate the ampdu session here */
if (start_ba_session) {
spin_lock(&priv->stream_lock);
if (mwl8k_start_stream(hw, stream))
mwl8k_remove_stream(hw, stream);
spin_unlock(&priv->stream_lock);
}
}
/*
* Firmware access.
*
* We have the following requirements for issuing firmware commands:
* - Some commands require that the packet transmit path is idle when
* the command is issued. (For simplicity, we'll just quiesce the
* transmit path for every command.)
* - There are certain sequences of commands that need to be issued to
* the hardware sequentially, with no other intervening commands.
*
* This leads to an implementation of a "firmware lock" as a mutex that
* can be taken recursively, and which is taken by both the low-level
* command submission function (mwl8k_post_cmd) as well as any users of
* that function that require issuing of an atomic sequence of commands,
* and quiesces the transmit path whenever it's taken.
*/
static int mwl8k_fw_lock(struct ieee80211_hw *hw)
{
struct mwl8k_priv *priv = hw->priv;
if (priv->fw_mutex_owner != current) {
int rc;
mutex_lock(&priv->fw_mutex);
ieee80211_stop_queues(hw);
rc = mwl8k_tx_wait_empty(hw);
if (rc) {
if (!priv->hw_restart_in_progress)
ieee80211_wake_queues(hw);
mutex_unlock(&priv->fw_mutex);
return rc;
}
priv->fw_mutex_owner = current;
}
priv->fw_mutex_depth++;
return 0;
}
static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
{
struct mwl8k_priv *priv = hw->priv;
if (!--priv->fw_mutex_depth) {
if (!priv->hw_restart_in_progress)
ieee80211_wake_queues(hw);
priv->fw_mutex_owner = NULL;
mutex_unlock(&priv->fw_mutex);
}
}
static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable,
u32 bitmap);
/*
* Command processing.
*/
/* Timeout firmware commands after 10s */
#define MWL8K_CMD_TIMEOUT_MS 10000
static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
{
DECLARE_COMPLETION_ONSTACK(cmd_wait);
struct mwl8k_priv *priv = hw->priv;
void __iomem *regs = priv->regs;
dma_addr_t dma_addr;
unsigned int dma_size;
int rc;
unsigned long timeout = 0;
u8 buf[32];
u32 bitmap = 0;
wiphy_dbg(hw->wiphy, "Posting %s [%d]\n",
mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid);
/* Before posting firmware commands that could change the hardware
* characteristics, make sure that all BSSes are stopped temporary.
* Enable these stopped BSSes after completion of the commands
*/
rc = mwl8k_fw_lock(hw);
if (rc)
return rc;
if (priv->ap_fw && priv->running_bsses) {
switch (le16_to_cpu(cmd->code)) {
case MWL8K_CMD_SET_RF_CHANNEL:
case MWL8K_CMD_RADIO_CONTROL:
case MWL8K_CMD_RF_TX_POWER:
case MWL8K_CMD_TX_POWER:
case MWL8K_CMD_RF_ANTENNA:
case MWL8K_CMD_RTS_THRESHOLD:
case MWL8K_CMD_MIMO_CONFIG:
bitmap = priv->running_bsses;
mwl8k_enable_bsses(hw, false, bitmap);
break;
}
}
cmd->result = (__force __le16) 0xffff;
dma_size = le16_to_cpu(cmd->length);
dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
PCI_DMA_BIDIRECTIONAL);
if (pci_dma_mapping_error(priv->pdev, dma_addr))
return -ENOMEM;
priv->hostcmd_wait = &cmd_wait;
iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
iowrite32(MWL8K_H2A_INT_DOORBELL,
regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
iowrite32(MWL8K_H2A_INT_DUMMY,
regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
timeout = wait_for_completion_timeout(&cmd_wait,
msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
priv->hostcmd_wait = NULL;
pci_unmap_single(priv->pdev, dma_addr, dma_size,
PCI_DMA_BIDIRECTIONAL);
if (!timeout) {
wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
MWL8K_CMD_TIMEOUT_MS);
rc = -ETIMEDOUT;
} else {
int ms;
ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
rc = cmd->result ? -EINVAL : 0;
if (rc)
wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
le16_to_cpu(cmd->result));
else if (ms > 2000)
wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
mwl8k_cmd_name(cmd->code,
buf, sizeof(buf)),
ms);
}
if (bitmap)
mwl8k_enable_bsses(hw, true, bitmap);
mwl8k_fw_unlock(hw);
return rc;
}
static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct mwl8k_cmd_pkt *cmd)
{
if (vif != NULL)
cmd->macid = MWL8K_VIF(vif)->macid;
return mwl8k_post_cmd(hw, cmd);
}
/*
* Setup code shared between STA and AP firmware images.
*/
static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
{
struct mwl8k_priv *priv = hw->priv;
BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
priv->band_24.band = IEEE80211_BAND_2GHZ;
priv->band_24.channels = priv->channels_24;
priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
priv->band_24.bitrates = priv->rates_24;
priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
}
static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
{
struct mwl8k_priv *priv = hw->priv;
BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
priv->band_50.band = IEEE80211_BAND_5GHZ;
priv->band_50.channels = priv->channels_50;
priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
priv->band_50.bitrates = priv->rates_50;
priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
}
/*
* CMD_GET_HW_SPEC (STA version).
*/
struct mwl8k_cmd_get_hw_spec_sta {
struct mwl8k_cmd_pkt header;
__u8 hw_rev;
__u8 host_interface;
__le16 num_mcaddrs;
__u8 perm_addr[ETH_ALEN];
__le16 region_code;
__le32 fw_rev;
__le32 ps_cookie;
__le32 caps;
__u8 mcs_bitmap[16];
__le32 rx_queue_ptr;
__le32 num_tx_queues;
__le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
__le32 caps2;
__le32 num_tx_desc_per_queue;
__le32 total_rxd;
} __packed;
#define MWL8K_CAP_MAX_AMSDU 0x20000000
#define MWL8K_CAP_GREENFIELD 0x08000000
#define MWL8K_CAP_AMPDU 0x04000000
#define MWL8K_CAP_RX_STBC 0x01000000
#define MWL8K_CAP_TX_STBC 0x00800000
#define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
#define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
#define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
#define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
#define MWL8K_CAP_DELAY_BA 0x00003000
#define MWL8K_CAP_MIMO 0x00000200
#define MWL8K_CAP_40MHZ 0x00000100
#define MWL8K_CAP_BAND_MASK 0x00000007
#define MWL8K_CAP_5GHZ 0x00000004
#define MWL8K_CAP_2GHZ4 0x00000001
static void
mwl8k_set_ht_caps(struct ieee80211_hw *hw,
struct ieee80211_supported_band *band, u32 cap)
{
int rx_streams;
int tx_streams;
band->ht_cap.ht_supported = 1;
if (cap & MWL8K_CAP_MAX_AMSDU)
band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
if (cap & MWL8K_CAP_GREENFIELD)
band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
if (cap & MWL8K_CAP_AMPDU) {
hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
}
if (cap & MWL8K_CAP_RX_STBC)
band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
if (cap & MWL8K_CAP_TX_STBC)
band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
if (cap & MWL8K_CAP_SHORTGI_40MHZ)
band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
if (cap & MWL8K_CAP_SHORTGI_20MHZ)
band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
if (cap & MWL8K_CAP_DELAY_BA)
band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
if (cap & MWL8K_CAP_40MHZ)
band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
band->ht_cap.mcs.rx_mask[0] = 0xff;
if (rx_streams >= 2)
band->ht_cap.mcs.rx_mask[1] = 0xff;
if (rx_streams >= 3)
band->ht_cap.mcs.rx_mask[2] = 0xff;
band->ht_cap.mcs.rx_mask[4] = 0x01;
band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
if (rx_streams != tx_streams) {
band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
}
}
static void
mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
{
struct mwl8k_priv *priv = hw->priv;
if (priv->caps)
return;
if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
mwl8k_setup_2ghz_band(hw);
if (caps & MWL8K_CAP_MIMO)
mwl8k_set_ht_caps(hw, &priv->band_24, caps);
}
if (caps & MWL8K_CAP_5GHZ) {
mwl8k_setup_5ghz_band(hw);
if (caps & MWL8K_CAP_MIMO)
mwl8k_set_ht_caps(hw, &priv->band_50, caps);
}
priv->caps = caps;
}
static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_cmd_get_hw_spec_sta *cmd;
int rc;
int i;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
for (i = 0; i < mwl8k_tx_queues(priv); i++)
cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
rc = mwl8k_post_cmd(hw, &cmd->header);
if (!rc) {
SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
priv->fw_rev = le32_to_cpu(cmd->fw_rev);
priv->hw_rev = cmd->hw_rev;
mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
priv->ap_macids_supported = 0x00000000;
priv->sta_macids_supported = 0x00000001;
}
kfree(cmd);
return rc;
}
/*
* CMD_GET_HW_SPEC (AP version).
*/
struct mwl8k_cmd_get_hw_spec_ap {
struct mwl8k_cmd_pkt header;
__u8 hw_rev;
__u8 host_interface;
__le16 num_wcb;
__le16 num_mcaddrs;
__u8 perm_addr[ETH_ALEN];
__le16 region_code;
__le16 num_antenna;
__le32 fw_rev;
__le32 wcbbase0;
__le32 rxwrptr;
__le32 rxrdptr;
__le32 ps_cookie;
__le32 wcbbase1;
__le32 wcbbase2;
__le32 wcbbase3;
__le32 fw_api_version;
__le32 caps;
__le32 num_of_ampdu_queues;
__le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
} __packed;
static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_cmd_get_hw_spec_ap *cmd;
int rc, i;
u32 api_version;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
rc = mwl8k_post_cmd(hw, &cmd->header);
if (!rc) {
int off;
api_version = le32_to_cpu(cmd->fw_api_version);
if (priv->device_info->fw_api_ap != api_version) {
printk(KERN_ERR "%s: Unsupported fw API version for %s."
" Expected %d got %d.\n", MWL8K_NAME,
priv->device_info->part_name,
priv->device_info->fw_api_ap,
api_version);
rc = -EINVAL;
goto done;
}
SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
priv->fw_rev = le32_to_cpu(cmd->fw_rev);
priv->hw_rev = cmd->hw_rev;
mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
priv->ap_macids_supported = 0x000000ff;
priv->sta_macids_supported = 0x00000100;
priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
" but we only support %d.\n",
priv->num_ampdu_queues,
MWL8K_MAX_AMPDU_QUEUES);
priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
}
off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
for (i = 0; i < priv->num_ampdu_queues; i++)
priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
}
done:
kfree(cmd);
return rc;
}
/*
* CMD_SET_HW_SPEC.
*/
struct mwl8k_cmd_set_hw_spec {
struct mwl8k_cmd_pkt header;
__u8 hw_rev;
__u8 host_interface;
__le16 num_mcaddrs;
__u8 perm_addr[ETH_ALEN];
__le16 region_code;
__le32 fw_rev;
__le32 ps_cookie;
__le32 caps;
__le32 rx_queue_ptr;
__le32 num_tx_queues;
__le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
__le32 flags;
__le32 num_tx_desc_per_queue;
__le32 total_rxd;
} __packed;
/* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
* packets to expire 500 ms after the timestamp in the tx descriptor. That is,
* the packets that are queued for more than 500ms, will be dropped in the
* hardware. This helps minimizing the issues caused due to head-of-line
* blocking where a slow client can hog the bandwidth and affect traffic to a
* faster client.
*/
#define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400
#define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200
#define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_cmd_set_hw_spec *cmd;
int rc;
int i;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
/*
* Mac80211 stack has Q0 as highest priority and Q3 as lowest in
* that order. Firmware has Q3 as highest priority and Q0 as lowest
* in that order. Map Q3 of mac80211 to Q0 of firmware so that the
* priority is interpreted the right way in firmware.
*/
for (i = 0; i < mwl8k_tx_queues(priv); i++) {
int j = mwl8k_tx_queues(priv) - 1 - i;
cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
}
cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_MAC_MULTICAST_ADR.
*/
struct mwl8k_cmd_mac_multicast_adr {
struct mwl8k_cmd_pkt header;
__le16 action;
__le16 numaddr;
__u8 addr[0][ETH_ALEN];
};
#define MWL8K_ENABLE_RX_DIRECTED 0x0001
#define MWL8K_ENABLE_RX_MULTICAST 0x0002
#define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
#define MWL8K_ENABLE_RX_BROADCAST 0x0008
static struct mwl8k_cmd_pkt *
__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
struct netdev_hw_addr_list *mc_list)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_cmd_mac_multicast_adr *cmd;
int size;
int mc_count = 0;
if (mc_list)
mc_count = netdev_hw_addr_list_count(mc_list);
if (allmulti || mc_count > priv->num_mcaddrs) {
allmulti = 1;
mc_count = 0;
}
size = sizeof(*cmd) + mc_count * ETH_ALEN;
cmd = kzalloc(size, GFP_ATOMIC);
if (cmd == NULL)
return NULL;
cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
cmd->header.length = cpu_to_le16(size);
cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
MWL8K_ENABLE_RX_BROADCAST);
if (allmulti) {
cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
} else if (mc_count) {
struct netdev_hw_addr *ha;
int i = 0;
cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
cmd->numaddr = cpu_to_le16(mc_count);
netdev_hw_addr_list_for_each(ha, mc_list) {
memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
}
}
return &cmd->header;
}
/*
* CMD_GET_STAT.
*/
struct mwl8k_cmd_get_stat {
struct mwl8k_cmd_pkt header;
__le32 stats[64];
} __packed;
#define MWL8K_STAT_ACK_FAILURE 9
#define MWL8K_STAT_RTS_FAILURE 12
#define MWL8K_STAT_FCS_ERROR 24
#define MWL8K_STAT_RTS_SUCCESS 11
static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
struct ieee80211_low_level_stats *stats)
{
struct mwl8k_cmd_get_stat *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
rc = mwl8k_post_cmd(hw, &cmd->header);
if (!rc) {
stats->dot11ACKFailureCount =
le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
stats->dot11RTSFailureCount =
le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
stats->dot11FCSErrorCount =
le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
stats->dot11RTSSuccessCount =
le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
}
kfree(cmd);
return rc;
}
/*
* CMD_RADIO_CONTROL.
*/
struct mwl8k_cmd_radio_control {
struct mwl8k_cmd_pkt header;
__le16 action;
__le16 control;
__le16 radio_on;
} __packed;
static int
mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_cmd_radio_control *cmd;
int rc;
if (enable == priv->radio_on && !force)
return 0;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le16(MWL8K_CMD_SET);
cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
if (!rc)
priv->radio_on = enable;
return rc;
}
static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
{
return mwl8k_cmd_radio_control(hw, 0, 0);
}
static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
{
return mwl8k_cmd_radio_control(hw, 1, 0);
}
static int
mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
{
struct mwl8k_priv *priv = hw->priv;
priv->radio_short_preamble = short_preamble;
return mwl8k_cmd_radio_control(hw, 1, 1);
}
/*
* CMD_RF_TX_POWER.
*/
#define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
struct mwl8k_cmd_rf_tx_power {
struct mwl8k_cmd_pkt header;
__le16 action;
__le16 support_level;
__le16 current_level;
__le16 reserved;
__le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
} __packed;
static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
{
struct mwl8k_cmd_rf_tx_power *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le16(MWL8K_CMD_SET);
cmd->support_level = cpu_to_le16(dBm);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_TX_POWER.
*/
#define MWL8K_TX_POWER_LEVEL_TOTAL 12
struct mwl8k_cmd_tx_power {
struct mwl8k_cmd_pkt header;
__le16 action;
__le16 band;
__le16 channel;
__le16 bw;
__le16 sub_ch;
__le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
} __packed;
static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
struct ieee80211_conf *conf,
unsigned short pwr)
{
struct ieee80211_channel *channel = conf->chandef.chan;
enum nl80211_channel_type channel_type =
cfg80211_get_chandef_type(&conf->chandef);
struct mwl8k_cmd_tx_power *cmd;
int rc;
int i;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
if (channel->band == IEEE80211_BAND_2GHZ)
cmd->band = cpu_to_le16(0x1);
else if (channel->band == IEEE80211_BAND_5GHZ)
cmd->band = cpu_to_le16(0x4);
cmd->channel = cpu_to_le16(channel->hw_value);
if (channel_type == NL80211_CHAN_NO_HT ||
channel_type == NL80211_CHAN_HT20) {
cmd->bw = cpu_to_le16(0x2);
} else {
cmd->bw = cpu_to_le16(0x4);
if (channel_type == NL80211_CHAN_HT40MINUS)
cmd->sub_ch = cpu_to_le16(0x3);
else if (channel_type == NL80211_CHAN_HT40PLUS)
cmd->sub_ch = cpu_to_le16(0x1);
}
for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
cmd->power_level_list[i] = cpu_to_le16(pwr);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_RF_ANTENNA.
*/
struct mwl8k_cmd_rf_antenna {
struct mwl8k_cmd_pkt header;
__le16 antenna;
__le16 mode;
} __packed;
#define MWL8K_RF_ANTENNA_RX 1
#define MWL8K_RF_ANTENNA_TX 2
static int
mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
{
struct mwl8k_cmd_rf_antenna *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->antenna = cpu_to_le16(antenna);
cmd->mode = cpu_to_le16(mask);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_SET_BEACON.
*/
struct mwl8k_cmd_set_beacon {
struct mwl8k_cmd_pkt header;
__le16 beacon_len;
__u8 beacon[0];
};
static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u8 *beacon, int len)
{
struct mwl8k_cmd_set_beacon *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
cmd->beacon_len = cpu_to_le16(len);
memcpy(cmd->beacon, beacon, len);
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_SET_PRE_SCAN.
*/
struct mwl8k_cmd_set_pre_scan {
struct mwl8k_cmd_pkt header;
} __packed;
static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
{
struct mwl8k_cmd_set_pre_scan *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_SET_POST_SCAN.
*/
struct mwl8k_cmd_set_post_scan {
struct mwl8k_cmd_pkt header;
__le32 isibss;
__u8 bssid[ETH_ALEN];
} __packed;
static int
mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
{
struct mwl8k_cmd_set_post_scan *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->isibss = 0;
memcpy(cmd->bssid, mac, ETH_ALEN);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_SET_RF_CHANNEL.
*/
struct mwl8k_cmd_set_rf_channel {
struct mwl8k_cmd_pkt header;
__le16 action;
__u8 current_channel;
__le32 channel_flags;
} __packed;
static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
struct ieee80211_conf *conf)
{
struct ieee80211_channel *channel = conf->chandef.chan;
enum nl80211_channel_type channel_type =
cfg80211_get_chandef_type(&conf->chandef);
struct mwl8k_cmd_set_rf_channel *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le16(MWL8K_CMD_SET);
cmd->current_channel = channel->hw_value;
if (channel->band == IEEE80211_BAND_2GHZ)
cmd->channel_flags |= cpu_to_le32(0x00000001);
else if (channel->band == IEEE80211_BAND_5GHZ)
cmd->channel_flags |= cpu_to_le32(0x00000004);
if (channel_type == NL80211_CHAN_NO_HT ||
channel_type == NL80211_CHAN_HT20)
cmd->channel_flags |= cpu_to_le32(0x00000080);
else if (channel_type == NL80211_CHAN_HT40MINUS)
cmd->channel_flags |= cpu_to_le32(0x000001900);
else if (channel_type == NL80211_CHAN_HT40PLUS)
cmd->channel_flags |= cpu_to_le32(0x000000900);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_SET_AID.
*/
#define MWL8K_FRAME_PROT_DISABLED 0x00
#define MWL8K_FRAME_PROT_11G 0x07
#define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
#define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
struct mwl8k_cmd_update_set_aid {
struct mwl8k_cmd_pkt header;
__le16 aid;
/* AP's MAC address (BSSID) */
__u8 bssid[ETH_ALEN];
__le16 protection_mode;
__u8 supp_rates[14];
} __packed;
static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
{
int i;
int j;
/*
* Clear nonstandard rate 4.
*/
mask &= 0x1fef;
for (i = 0, j = 0; i < 13; i++) {
if (mask & (1 << i))
rates[j++] = mwl8k_rates_24[i].hw_value;
}
}
static int
mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u32 legacy_rate_mask)
{
struct mwl8k_cmd_update_set_aid *cmd;
u16 prot_mode;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->aid = cpu_to_le16(vif->bss_conf.aid);
memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
if (vif->bss_conf.use_cts_prot) {
prot_mode = MWL8K_FRAME_PROT_11G;
} else {
switch (vif->bss_conf.ht_operation_mode &
IEEE80211_HT_OP_MODE_PROTECTION) {
case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
break;
case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
break;
default:
prot_mode = MWL8K_FRAME_PROT_DISABLED;
break;
}
}
cmd->protection_mode = cpu_to_le16(prot_mode);
legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_SET_RATE.
*/
struct mwl8k_cmd_set_rate {
struct mwl8k_cmd_pkt header;
__u8 legacy_rates[14];
/* Bitmap for supported MCS codes. */
__u8 mcs_set[16];
__u8 reserved[16];
} __packed;
static int
mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
u32 legacy_rate_mask, u8 *mcs_rates)
{
struct mwl8k_cmd_set_rate *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
memcpy(cmd->mcs_set, mcs_rates, 16);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_FINALIZE_JOIN.
*/
#define MWL8K_FJ_BEACON_MAXLEN 128
struct mwl8k_cmd_finalize_join {
struct mwl8k_cmd_pkt header;
__le32 sleep_interval; /* Number of beacon periods to sleep */
__u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
} __packed;
static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
int framelen, int dtim)
{
struct mwl8k_cmd_finalize_join *cmd;
struct ieee80211_mgmt *payload = frame;
int payload_len;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
if (payload_len < 0)
payload_len = 0;
else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
payload_len = MWL8K_FJ_BEACON_MAXLEN;
memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_SET_RTS_THRESHOLD.
*/
struct mwl8k_cmd_set_rts_threshold {
struct mwl8k_cmd_pkt header;
__le16 action;
__le16 threshold;
} __packed;
static int
mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
{
struct mwl8k_cmd_set_rts_threshold *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le16(MWL8K_CMD_SET);
cmd->threshold = cpu_to_le16(rts_thresh);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_SET_SLOT.
*/
struct mwl8k_cmd_set_slot {
struct mwl8k_cmd_pkt header;
__le16 action;
__u8 short_slot;
} __packed;
static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
{
struct mwl8k_cmd_set_slot *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le16(MWL8K_CMD_SET);
cmd->short_slot = short_slot_time;
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_SET_EDCA_PARAMS.
*/
struct mwl8k_cmd_set_edca_params {
struct mwl8k_cmd_pkt header;
/* See MWL8K_SET_EDCA_XXX below */
__le16 action;
/* TX opportunity in units of 32 us */
__le16 txop;
union {
struct {
/* Log exponent of max contention period: 0...15 */
__le32 log_cw_max;
/* Log exponent of min contention period: 0...15 */
__le32 log_cw_min;
/* Adaptive interframe spacing in units of 32us */
__u8 aifs;
/* TX queue to configure */
__u8 txq;
} ap;
struct {
/* Log exponent of max contention period: 0...15 */
__u8 log_cw_max;
/* Log exponent of min contention period: 0...15 */
__u8 log_cw_min;
/* Adaptive interframe spacing in units of 32us */
__u8 aifs;
/* TX queue to configure */
__u8 txq;
} sta;
};
} __packed;
#define MWL8K_SET_EDCA_CW 0x01
#define MWL8K_SET_EDCA_TXOP 0x02
#define MWL8K_SET_EDCA_AIFS 0x04
#define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
MWL8K_SET_EDCA_TXOP | \
MWL8K_SET_EDCA_AIFS)
static int
mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
__u16 cw_min, __u16 cw_max,
__u8 aifs, __u16 txop)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_cmd_set_edca_params *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
cmd->txop = cpu_to_le16(txop);
if (priv->ap_fw) {
cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
cmd->ap.aifs = aifs;
cmd->ap.txq = qnum;
} else {
cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
cmd->sta.aifs = aifs;
cmd->sta.txq = qnum;
}
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_SET_WMM_MODE.
*/
struct mwl8k_cmd_set_wmm_mode {
struct mwl8k_cmd_pkt header;
__le16 action;
} __packed;
static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_cmd_set_wmm_mode *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le16(!!enable);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
if (!rc)
priv->wmm_enabled = enable;
return rc;
}
/*
* CMD_MIMO_CONFIG.
*/
struct mwl8k_cmd_mimo_config {
struct mwl8k_cmd_pkt header;
__le32 action;
__u8 rx_antenna_map;
__u8 tx_antenna_map;
} __packed;
static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
{
struct mwl8k_cmd_mimo_config *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
cmd->rx_antenna_map = rx;
cmd->tx_antenna_map = tx;
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_USE_FIXED_RATE (STA version).
*/
struct mwl8k_cmd_use_fixed_rate_sta {
struct mwl8k_cmd_pkt header;
__le32 action;
__le32 allow_rate_drop;
__le32 num_rates;
struct {
__le32 is_ht_rate;
__le32 enable_retry;
__le32 rate;
__le32 retry_count;
} rate_entry[8];
__le32 rate_type;
__le32 reserved1;
__le32 reserved2;
} __packed;
#define MWL8K_USE_AUTO_RATE 0x0002
#define MWL8K_UCAST_RATE 0
static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
{
struct mwl8k_cmd_use_fixed_rate_sta *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_USE_FIXED_RATE (AP version).
*/
struct mwl8k_cmd_use_fixed_rate_ap {
struct mwl8k_cmd_pkt header;
__le32 action;
__le32 allow_rate_drop;
__le32 num_rates;
struct mwl8k_rate_entry_ap {
__le32 is_ht_rate;
__le32 enable_retry;
__le32 rate;
__le32 retry_count;
} rate_entry[4];
u8 multicast_rate;
u8 multicast_rate_type;
u8 management_rate;
} __packed;
static int
mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
{
struct mwl8k_cmd_use_fixed_rate_ap *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
cmd->multicast_rate = mcast;
cmd->management_rate = mgmt;
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_ENABLE_SNIFFER.
*/
struct mwl8k_cmd_enable_sniffer {
struct mwl8k_cmd_pkt header;
__le32 action;
} __packed;
static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
{
struct mwl8k_cmd_enable_sniffer *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le32(!!enable);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
struct mwl8k_cmd_update_mac_addr {
struct mwl8k_cmd_pkt header;
union {
struct {
__le16 mac_type;
__u8 mac_addr[ETH_ALEN];
} mbss;
__u8 mac_addr[ETH_ALEN];
};
} __packed;
#define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
#define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
#define MWL8K_MAC_TYPE_PRIMARY_AP 2
#define MWL8K_MAC_TYPE_SECONDARY_AP 3
static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u8 *mac, bool set)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
struct mwl8k_cmd_update_mac_addr *cmd;
int mac_type;
int rc;
mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
if (priv->ap_fw)
mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
else
mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
else
mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
} else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
else
mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
}
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
if (set)
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
else
cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
if (priv->ap_fw) {
cmd->mbss.mac_type = cpu_to_le16(mac_type);
memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
} else {
memcpy(cmd->mac_addr, mac, ETH_ALEN);
}
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
kfree(cmd);
return rc;
}
/*
* MWL8K_CMD_SET_MAC_ADDR.
*/
static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u8 *mac)
{
return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
}
/*
* MWL8K_CMD_DEL_MAC_ADDR.
*/
static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u8 *mac)
{
return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
}
/*
* CMD_SET_RATEADAPT_MODE.
*/
struct mwl8k_cmd_set_rate_adapt_mode {
struct mwl8k_cmd_pkt header;
__le16 action;
__le16 mode;
} __packed;
static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
{
struct mwl8k_cmd_set_rate_adapt_mode *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le16(MWL8K_CMD_SET);
cmd->mode = cpu_to_le16(mode);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_GET_WATCHDOG_BITMAP.
*/
struct mwl8k_cmd_get_watchdog_bitmap {
struct mwl8k_cmd_pkt header;
u8 bitmap;
} __packed;
static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
{
struct mwl8k_cmd_get_watchdog_bitmap *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
rc = mwl8k_post_cmd(hw, &cmd->header);
if (!rc)
*bitmap = cmd->bitmap;
kfree(cmd);
return rc;
}
#define MWL8K_WMM_QUEUE_NUMBER 3
static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
u8 idx);
static void mwl8k_watchdog_ba_events(struct work_struct *work)
{
int rc;
u8 bitmap = 0, stream_index;
struct mwl8k_ampdu_stream *streams;
struct mwl8k_priv *priv =
container_of(work, struct mwl8k_priv, watchdog_ba_handle);
struct ieee80211_hw *hw = priv->hw;
int i;
u32 status = 0;
mwl8k_fw_lock(hw);
rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
if (rc)
goto done;
spin_lock(&priv->stream_lock);
/* the bitmap is the hw queue number. Map it to the ampdu queue. */
for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) {
if (bitmap & (1 << i)) {
stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) %
TOTAL_HW_TX_QUEUES;
streams = &priv->ampdu[stream_index];
if (streams->state == AMPDU_STREAM_ACTIVE) {
ieee80211_stop_tx_ba_session(streams->sta,
streams->tid);
spin_unlock(&priv->stream_lock);
mwl8k_destroy_ba(hw, stream_index);
spin_lock(&priv->stream_lock);
}
}
}
spin_unlock(&priv->stream_lock);
done:
atomic_dec(&priv->watchdog_event_pending);
status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG),
priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
mwl8k_fw_unlock(hw);
return;
}
/*
* CMD_BSS_START.
*/
struct mwl8k_cmd_bss_start {
struct mwl8k_cmd_pkt header;
__le32 enable;
} __packed;
static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, int enable)
{
struct mwl8k_cmd_bss_start *cmd;
struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
struct mwl8k_priv *priv = hw->priv;
int rc;
if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid)))
return 0;
if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid)))
return 0;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->enable = cpu_to_le32(enable);
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
kfree(cmd);
if (!rc) {
if (enable)
priv->running_bsses |= (1 << mwl8k_vif->macid);
else
priv->running_bsses &= ~(1 << mwl8k_vif->macid);
}
return rc;
}
static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_vif *mwl8k_vif, *tmp_vif;
struct ieee80211_vif *vif;
list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) {
vif = mwl8k_vif->vif;
if (!(bitmap & (1 << mwl8k_vif->macid)))
continue;
if (vif->type == NL80211_IFTYPE_AP)
mwl8k_cmd_bss_start(hw, vif, enable);
}
}
/*
* CMD_BASTREAM.
*/
/*
* UPSTREAM is tx direction
*/
#define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00
#define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01
enum ba_stream_action_type {
MWL8K_BA_CREATE,
MWL8K_BA_UPDATE,
MWL8K_BA_DESTROY,
MWL8K_BA_FLUSH,
MWL8K_BA_CHECK,
};
struct mwl8k_create_ba_stream {
__le32 flags;
__le32 idle_thrs;
__le32 bar_thrs;
__le32 window_size;
u8 peer_mac_addr[6];
u8 dialog_token;
u8 tid;
u8 queue_id;
u8 param_info;
__le32 ba_context;
u8 reset_seq_no_flag;
__le16 curr_seq_no;
u8 sta_src_mac_addr[6];
} __packed;
struct mwl8k_destroy_ba_stream {
__le32 flags;
__le32 ba_context;
} __packed;
struct mwl8k_cmd_bastream {
struct mwl8k_cmd_pkt header;
__le32 action;
union {
struct mwl8k_create_ba_stream create_params;
struct mwl8k_destroy_ba_stream destroy_params;
};
} __packed;
static int
mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
struct ieee80211_vif *vif)
{
struct mwl8k_cmd_bastream *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
cmd->create_params.queue_id = stream->idx;
memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
ETH_ALEN);
cmd->create_params.tid = stream->tid;
cmd->create_params.flags =
cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
kfree(cmd);
return rc;
}
static int
mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
u8 buf_size, struct ieee80211_vif *vif)
{
struct mwl8k_cmd_bastream *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
cmd->create_params.queue_id = stream->idx;
memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
cmd->create_params.tid = stream->tid;
cmd->create_params.curr_seq_no = cpu_to_le16(0);
cmd->create_params.reset_seq_no_flag = 1;
cmd->create_params.param_info =
(stream->sta->ht_cap.ampdu_factor &
IEEE80211_HT_AMPDU_PARM_FACTOR) |
((stream->sta->ht_cap.ampdu_density << 2) &
IEEE80211_HT_AMPDU_PARM_DENSITY);
cmd->create_params.flags =
cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
BASTREAM_FLAG_DIRECTION_UPSTREAM);
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
stream->sta->addr, stream->tid);
kfree(cmd);
return rc;
}
static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
u8 idx)
{
struct mwl8k_cmd_bastream *cmd;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return;
cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
cmd->destroy_params.ba_context = cpu_to_le32(idx);
mwl8k_post_cmd(hw, &cmd->header);
wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx);
kfree(cmd);
}
/*
* CMD_SET_NEW_STN.
*/
struct mwl8k_cmd_set_new_stn {
struct mwl8k_cmd_pkt header;
__le16 aid;
__u8 mac_addr[6];
__le16 stn_id;
__le16 action;
__le16 rsvd;
__le32 legacy_rates;
__u8 ht_rates[4];
__le16 cap_info;
__le16 ht_capabilities_info;
__u8 mac_ht_param_info;
__u8 rev;
__u8 control_channel;
__u8 add_channel;
__le16 op_mode;
__le16 stbc;
__u8 add_qos_info;
__u8 is_qos_sta;
__le32 fw_sta_ptr;
} __packed;
#define MWL8K_STA_ACTION_ADD 0
#define MWL8K_STA_ACTION_REMOVE 2
static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct mwl8k_cmd_set_new_stn *cmd;
u32 rates;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->aid = cpu_to_le16(sta->aid);
memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
cmd->stn_id = cpu_to_le16(sta->aid);
cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
else
rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
cmd->legacy_rates = cpu_to_le32(rates);
if (sta->ht_cap.ht_supported) {
cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
((sta->ht_cap.ampdu_density & 7) << 2);
cmd->is_qos_sta = 1;
}
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
kfree(cmd);
return rc;
}
static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct mwl8k_cmd_set_new_stn *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
kfree(cmd);
return rc;
}
static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u8 *addr)
{
struct mwl8k_cmd_set_new_stn *cmd;
struct mwl8k_priv *priv = hw->priv;
int rc, i;
u8 idx;
spin_lock(&priv->stream_lock);
/* Destroy any active ampdu streams for this sta */
for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
struct mwl8k_ampdu_stream *s;
s = &priv->ampdu[i];
if (s->state != AMPDU_NO_STREAM) {
if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) {
if (s->state == AMPDU_STREAM_ACTIVE) {
idx = s->idx;
spin_unlock(&priv->stream_lock);
mwl8k_destroy_ba(hw, idx);
spin_lock(&priv->stream_lock);
} else if (s->state == AMPDU_STREAM_NEW) {
mwl8k_remove_stream(hw, s);
}
}
}
}
spin_unlock(&priv->stream_lock);
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
memcpy(cmd->mac_addr, addr, ETH_ALEN);
cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
kfree(cmd);
return rc;
}
/*
* CMD_UPDATE_ENCRYPTION.
*/
#define MAX_ENCR_KEY_LENGTH 16
#define MIC_KEY_LENGTH 8
struct mwl8k_cmd_update_encryption {
struct mwl8k_cmd_pkt header;
__le32 action;
__le32 reserved;
__u8 mac_addr[6];
__u8 encr_type;
} __packed;
struct mwl8k_cmd_set_key {
struct mwl8k_cmd_pkt header;
__le32 action;
__le32 reserved;
__le16 length;
__le16 key_type_id;
__le32 key_info;
__le32 key_id;
__le16 key_len;
__u8 key_material[MAX_ENCR_KEY_LENGTH];
__u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
__u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
__le16 tkip_rsc_low;
__le32 tkip_rsc_high;
__le16 tkip_tsc_low;
__le32 tkip_tsc_high;
__u8 mac_addr[6];
} __packed;
enum {
MWL8K_ENCR_ENABLE,
MWL8K_ENCR_SET_KEY,
MWL8K_ENCR_REMOVE_KEY,
MWL8K_ENCR_SET_GROUP_KEY,
};
#define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
#define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
#define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
#define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
#define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
enum {
MWL8K_ALG_WEP,
MWL8K_ALG_TKIP,
MWL8K_ALG_CCMP,
};
#define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
#define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
#define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
#define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
#define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
u8 *addr,
u8 encr_type)
{
struct mwl8k_cmd_update_encryption *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
memcpy(cmd->mac_addr, addr, ETH_ALEN);
cmd->encr_type = encr_type;
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
kfree(cmd);
return rc;
}
static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
u8 *addr,
struct ieee80211_key_conf *key)
{
cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->length = cpu_to_le16(sizeof(*cmd) -
offsetof(struct mwl8k_cmd_set_key, length));
cmd->key_id = cpu_to_le32(key->keyidx);
cmd->key_len = cpu_to_le16(key->keylen);
memcpy(cmd->mac_addr, addr, ETH_ALEN);
switch (key->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
if (key->keyidx == 0)
cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
break;
case WLAN_CIPHER_SUITE_TKIP:
cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
: cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
| MWL8K_KEY_FLAG_TSC_VALID);
break;
case WLAN_CIPHER_SUITE_CCMP:
cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
: cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
break;
default:
return -ENOTSUPP;
}
return 0;
}
static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
u8 *addr,
struct ieee80211_key_conf *key)
{
struct mwl8k_cmd_set_key *cmd;
int rc;
int keymlen;
u32 action;
u8 idx;
struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
if (rc < 0)
goto done;
idx = key->keyidx;
if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
action = MWL8K_ENCR_SET_KEY;
else
action = MWL8K_ENCR_SET_GROUP_KEY;
switch (key->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
if (!mwl8k_vif->wep_key_conf[idx].enabled) {
memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
sizeof(*key) + key->keylen);
mwl8k_vif->wep_key_conf[idx].enabled = 1;
}
keymlen = key->keylen;
action = MWL8K_ENCR_SET_KEY;
break;
case WLAN_CIPHER_SUITE_TKIP:
keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
break;
case WLAN_CIPHER_SUITE_CCMP:
keymlen = key->keylen;
break;
default:
rc = -ENOTSUPP;
goto done;
}
memcpy(cmd->key_material, key->key, keymlen);
cmd->action = cpu_to_le32(action);
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
done:
kfree(cmd);
return rc;
}
static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
u8 *addr,
struct ieee80211_key_conf *key)
{
struct mwl8k_cmd_set_key *cmd;
int rc;
struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
if (rc < 0)
goto done;
if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
key->cipher == WLAN_CIPHER_SUITE_WEP104)
mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
done:
kfree(cmd);
return rc;
}
static int mwl8k_set_key(struct ieee80211_hw *hw,
enum set_key_cmd cmd_param,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key)
{
int rc = 0;
u8 encr_type;
u8 *addr;
struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
struct mwl8k_priv *priv = hw->priv;
if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw)
return -EOPNOTSUPP;
if (sta == NULL)
addr = vif->addr;
else
addr = sta->addr;
if (cmd_param == SET_KEY) {
rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
if (rc)
goto out;
if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
|| (key->cipher == WLAN_CIPHER_SUITE_WEP104))
encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
else
encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
encr_type);
if (rc)
goto out;
mwl8k_vif->is_hw_crypto_enabled = true;
} else {
rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
if (rc)
goto out;
}
out:
return rc;
}
/*
* CMD_UPDATE_STADB.
*/
struct ewc_ht_info {
__le16 control1;
__le16 control2;
__le16 control3;
} __packed;
struct peer_capability_info {
/* Peer type - AP vs. STA. */
__u8 peer_type;
/* Basic 802.11 capabilities from assoc resp. */
__le16 basic_caps;
/* Set if peer supports 802.11n high throughput (HT). */
__u8 ht_support;
/* Valid if HT is supported. */
__le16 ht_caps;
__u8 extended_ht_caps;
struct ewc_ht_info ewc_info;
/* Legacy rate table. Intersection of our rates and peer rates. */
__u8 legacy_rates[12];
/* HT rate table. Intersection of our rates and peer rates. */
__u8 ht_rates[16];
__u8 pad[16];
/* If set, interoperability mode, no proprietary extensions. */
__u8 interop;
__u8 pad2;
__u8 station_id;
__le16 amsdu_enabled;
} __packed;
struct mwl8k_cmd_update_stadb {
struct mwl8k_cmd_pkt header;
/* See STADB_ACTION_TYPE */
__le32 action;
/* Peer MAC address */
__u8 peer_addr[ETH_ALEN];
__le32 reserved;
/* Peer info - valid during add/update. */
struct peer_capability_info peer_info;
} __packed;
#define MWL8K_STA_DB_MODIFY_ENTRY 1
#define MWL8K_STA_DB_DEL_ENTRY 2
/* Peer Entry flags - used to define the type of the peer node */
#define MWL8K_PEER_TYPE_ACCESSPOINT 2
static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct mwl8k_cmd_update_stadb *cmd;
struct peer_capability_info *p;
u32 rates;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
p = &cmd->peer_info;
p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
p->ht_support = sta->ht_cap.ht_supported;
p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
((sta->ht_cap.ampdu_density & 7) << 2);
if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
else
rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
legacy_rate_mask_to_array(p->legacy_rates, rates);
memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
p->interop = 1;
p->amsdu_enabled = 0;
rc = mwl8k_post_cmd(hw, &cmd->header);
if (!rc)
rc = p->station_id;
kfree(cmd);
return rc;
}
static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u8 *addr)
{
struct mwl8k_cmd_update_stadb *cmd;
int rc;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
return -ENOMEM;
cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
cmd->header.length = cpu_to_le16(sizeof(*cmd));
cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
memcpy(cmd->peer_addr, addr, ETH_ALEN);
rc = mwl8k_post_cmd(hw, &cmd->header);
kfree(cmd);
return rc;
}
/*
* Interrupt handling.
*/
static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
{
struct ieee80211_hw *hw = dev_id;
struct mwl8k_priv *priv = hw->priv;
u32 status;
status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
if (!status)
return IRQ_NONE;
if (status & MWL8K_A2H_INT_TX_DONE) {
status &= ~MWL8K_A2H_INT_TX_DONE;
tasklet_schedule(&priv->poll_tx_task);
}
if (status & MWL8K_A2H_INT_RX_READY) {
status &= ~MWL8K_A2H_INT_RX_READY;
tasklet_schedule(&priv->poll_rx_task);
}
if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG,
priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
atomic_inc(&priv->watchdog_event_pending);
status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
}
if (status)
iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
if (status & MWL8K_A2H_INT_OPC_DONE) {
if (priv->hostcmd_wait != NULL)
complete(priv->hostcmd_wait);
}
if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
if (!mutex_is_locked(&priv->fw_mutex) &&
priv->radio_on && priv->pending_tx_pkts)
mwl8k_tx_start(priv);
}
return IRQ_HANDLED;
}
static void mwl8k_tx_poll(unsigned long data)
{
struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
struct mwl8k_priv *priv = hw->priv;
int limit;
int i;
limit = 32;
spin_lock_bh(&priv->tx_lock);
for (i = 0; i < mwl8k_tx_queues(priv); i++)
limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
complete(priv->tx_wait);
priv->tx_wait = NULL;
}
spin_unlock_bh(&priv->tx_lock);
if (limit) {
writel(~MWL8K_A2H_INT_TX_DONE,
priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
} else {
tasklet_schedule(&priv->poll_tx_task);
}
}
static void mwl8k_rx_poll(unsigned long data)
{
struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
struct mwl8k_priv *priv = hw->priv;
int limit;
limit = 32;
limit -= rxq_process(hw, 0, limit);
limit -= rxq_refill(hw, 0, limit);
if (limit) {
writel(~MWL8K_A2H_INT_RX_READY,
priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
} else {
tasklet_schedule(&priv->poll_rx_task);
}
}
/*
* Core driver operations.
*/
static void mwl8k_tx(struct ieee80211_hw *hw,
struct ieee80211_tx_control *control,
struct sk_buff *skb)
{
struct mwl8k_priv *priv = hw->priv;
int index = skb_get_queue_mapping(skb);
if (!priv->radio_on) {
wiphy_debug(hw->wiphy,
"dropped TX frame since radio disabled\n");
dev_kfree_skb(skb);
return;
}
mwl8k_txq_xmit(hw, index, control->sta, skb);
}
static int mwl8k_start(struct ieee80211_hw *hw)
{
struct mwl8k_priv *priv = hw->priv;
int rc;
rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
IRQF_SHARED, MWL8K_NAME, hw);
if (rc) {
priv->irq = -1;
wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
return -EIO;
}
priv->irq = priv->pdev->irq;
/* Enable TX reclaim and RX tasklets. */
tasklet_enable(&priv->poll_tx_task);
tasklet_enable(&priv->poll_rx_task);
/* Enable interrupts */
iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
iowrite32(MWL8K_A2H_EVENTS,
priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
rc = mwl8k_fw_lock(hw);
if (!rc) {
rc = mwl8k_cmd_radio_enable(hw);
if (!priv->ap_fw) {
if (!rc)
rc = mwl8k_cmd_enable_sniffer(hw, 0);
if (!rc)
rc = mwl8k_cmd_set_pre_scan(hw);
if (!rc)
rc = mwl8k_cmd_set_post_scan(hw,
"\x00\x00\x00\x00\x00\x00");
}
if (!rc)
rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
if (!rc)
rc = mwl8k_cmd_set_wmm_mode(hw, 0);
mwl8k_fw_unlock(hw);
}
if (rc) {
iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
free_irq(priv->pdev->irq, hw);
priv->irq = -1;
tasklet_disable(&priv->poll_tx_task);
tasklet_disable(&priv->poll_rx_task);
} else {
ieee80211_wake_queues(hw);
}
return rc;
}
static void mwl8k_stop(struct ieee80211_hw *hw)
{
struct mwl8k_priv *priv = hw->priv;
int i;
if (!priv->hw_restart_in_progress)
mwl8k_cmd_radio_disable(hw);
ieee80211_stop_queues(hw);
/* Disable interrupts */
iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
if (priv->irq != -1) {
free_irq(priv->pdev->irq, hw);
priv->irq = -1;
}
/* Stop finalize join worker */
cancel_work_sync(&priv->finalize_join_worker);
cancel_work_sync(&priv->watchdog_ba_handle);
if (priv->beacon_skb != NULL)
dev_kfree_skb(priv->beacon_skb);
/* Stop TX reclaim and RX tasklets. */
tasklet_disable(&priv->poll_tx_task);
tasklet_disable(&priv->poll_rx_task);
/* Return all skbs to mac80211 */
for (i = 0; i < mwl8k_tx_queues(priv); i++)
mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
}
static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
static int mwl8k_add_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_vif *mwl8k_vif;
u32 macids_supported;
int macid, rc;
struct mwl8k_device_info *di;
/*
* Reject interface creation if sniffer mode is active, as
* STA operation is mutually exclusive with hardware sniffer
* mode. (Sniffer mode is only used on STA firmware.)
*/
if (priv->sniffer_enabled) {
wiphy_info(hw->wiphy,
"unable to create STA interface because sniffer mode is enabled\n");
return -EINVAL;
}
di = priv->device_info;
switch (vif->type) {
case NL80211_IFTYPE_AP:
if (!priv->ap_fw && di->fw_image_ap) {
/* we must load the ap fw to meet this request */
if (!list_empty(&priv->vif_list))
return -EBUSY;
rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
if (rc)
return rc;
}
macids_supported = priv->ap_macids_supported;
break;
case NL80211_IFTYPE_STATION:
if (priv->ap_fw && di->fw_image_sta) {
if (!list_empty(&priv->vif_list)) {
wiphy_warn(hw->wiphy, "AP interface is running.\n"
"Adding STA interface for WDS");
} else {
/* we must load the sta fw to
* meet this request.
*/
rc = mwl8k_reload_firmware(hw,
di->fw_image_sta);
if (rc)
return rc;
}
}
macids_supported = priv->sta_macids_supported;
break;
default:
return -EINVAL;
}
macid = ffs(macids_supported & ~priv->macids_used);
if (!macid--)
return -EBUSY;
/* Setup driver private area. */
mwl8k_vif = MWL8K_VIF(vif);
memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
mwl8k_vif->vif = vif;
mwl8k_vif->macid = macid;
mwl8k_vif->seqno = 0;
memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
mwl8k_vif->is_hw_crypto_enabled = false;
/* Set the mac address. */
mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
if (vif->type == NL80211_IFTYPE_AP)
mwl8k_cmd_set_new_stn_add_self(hw, vif);
priv->macids_used |= 1 << mwl8k_vif->macid;
list_add_tail(&mwl8k_vif->list, &priv->vif_list);
return 0;
}
static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
{
/* Has ieee80211_restart_hw re-added the removed interfaces? */
if (!priv->macids_used)
return;
priv->macids_used &= ~(1 << vif->macid);
list_del(&vif->list);
}
static void mwl8k_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
if (vif->type == NL80211_IFTYPE_AP)
mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
mwl8k_remove_vif(priv, mwl8k_vif);
}
static void mwl8k_hw_restart_work(struct work_struct *work)
{
struct mwl8k_priv *priv =
container_of(work, struct mwl8k_priv, fw_reload);
struct ieee80211_hw *hw = priv->hw;
struct mwl8k_device_info *di;
int rc;
/* If some command is waiting for a response, clear it */
if (priv->hostcmd_wait != NULL) {
complete(priv->hostcmd_wait);
priv->hostcmd_wait = NULL;
}
priv->hw_restart_owner = current;
di = priv->device_info;
mwl8k_fw_lock(hw);
if (priv->ap_fw)
rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
else
rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
if (rc)
goto fail;
priv->hw_restart_owner = NULL;
priv->hw_restart_in_progress = false;
/*
* This unlock will wake up the queues and
* also opens the command path for other
* commands
*/
mwl8k_fw_unlock(hw);
ieee80211_restart_hw(hw);
wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
return;
fail:
mwl8k_fw_unlock(hw);
wiphy_err(hw->wiphy, "Firmware restart failed\n");
}
static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
{
struct ieee80211_conf *conf = &hw->conf;
struct mwl8k_priv *priv = hw->priv;
int rc;
rc = mwl8k_fw_lock(hw);
if (rc)
return rc;
if (conf->flags & IEEE80211_CONF_IDLE)
rc = mwl8k_cmd_radio_disable(hw);
else
rc = mwl8k_cmd_radio_enable(hw);
if (rc)
goto out;
if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
rc = mwl8k_cmd_set_rf_channel(hw, conf);
if (rc)
goto out;
}
if (conf->power_level > 18)
conf->power_level = 18;
if (priv->ap_fw) {
if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
if (rc)
goto out;
}
} else {
rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
if (rc)
goto out;
rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
}
out:
mwl8k_fw_unlock(hw);
return rc;
}
static void
mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *info, u32 changed)
{
struct mwl8k_priv *priv = hw->priv;
u32 ap_legacy_rates = 0;
u8 ap_mcs_rates[16];
int rc;
if (mwl8k_fw_lock(hw))
return;
/*
* No need to capture a beacon if we're no longer associated.
*/
if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
priv->capture_beacon = false;
/*
* Get the AP's legacy and MCS rates.
*/
if (vif->bss_conf.assoc) {
struct ieee80211_sta *ap;
rcu_read_lock();
ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
if (ap == NULL) {
rcu_read_unlock();
goto out;
}
if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ) {
ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
} else {
ap_legacy_rates =
ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
}
memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
rcu_read_unlock();
}
if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc &&
!priv->ap_fw) {
rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
if (rc)
goto out;
rc = mwl8k_cmd_use_fixed_rate_sta(hw);
if (rc)
goto out;
} else {
if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc &&
priv->ap_fw) {
int idx;
int rate;
/* Use AP firmware specific rate command.
*/
idx = ffs(vif->bss_conf.basic_rates);
if (idx)
idx--;
if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
rate = mwl8k_rates_24[idx].hw_value;
else
rate = mwl8k_rates_50[idx].hw_value;
mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
}
}
if (changed & BSS_CHANGED_ERP_PREAMBLE) {
rc = mwl8k_set_radio_preamble(hw,
vif->bss_conf.use_short_preamble);
if (rc)
goto out;
}
if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw) {
rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
if (rc)
goto out;
}
if (vif->bss_conf.assoc && !priv->ap_fw &&
(changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
BSS_CHANGED_HT))) {
rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
if (rc)
goto out;
}
if (vif->bss_conf.assoc &&
(changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
/*
* Finalize the join. Tell rx handler to process
* next beacon from our BSSID.
*/
memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
priv->capture_beacon = true;
}
out:
mwl8k_fw_unlock(hw);
}
static void
mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *info, u32 changed)
{
int rc;
if (mwl8k_fw_lock(hw))
return;
if (changed & BSS_CHANGED_ERP_PREAMBLE) {
rc = mwl8k_set_radio_preamble(hw,
vif->bss_conf.use_short_preamble);
if (rc)
goto out;
}
if (changed & BSS_CHANGED_BASIC_RATES) {
int idx;
int rate;
/*
* Use lowest supported basic rate for multicasts
* and management frames (such as probe responses --
* beacons will always go out at 1 Mb/s).
*/
idx = ffs(vif->bss_conf.basic_rates);
if (idx)
idx--;
if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
rate = mwl8k_rates_24[idx].hw_value;
else
rate = mwl8k_rates_50[idx].hw_value;
mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
}
if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
struct sk_buff *skb;
skb = ieee80211_beacon_get(hw, vif);
if (skb != NULL) {
mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
kfree_skb(skb);
}
}
if (changed & BSS_CHANGED_BEACON_ENABLED)
mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
out:
mwl8k_fw_unlock(hw);
}
static void
mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *info, u32 changed)
{
if (vif->type == NL80211_IFTYPE_STATION)
mwl8k_bss_info_changed_sta(hw, vif, info, changed);
if (vif->type == NL80211_IFTYPE_AP)
mwl8k_bss_info_changed_ap(hw, vif, info, changed);
}
static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
struct netdev_hw_addr_list *mc_list)
{
struct mwl8k_cmd_pkt *cmd;
/*
* Synthesize and return a command packet that programs the
* hardware multicast address filter. At this point we don't
* know whether FIF_ALLMULTI is being requested, but if it is,
* we'll end up throwing this packet away and creating a new
* one in mwl8k_configure_filter().
*/
cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
return (unsigned long)cmd;
}
static int
mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *total_flags)
{
struct mwl8k_priv *priv = hw->priv;
/*
* Hardware sniffer mode is mutually exclusive with STA
* operation, so refuse to enable sniffer mode if a STA
* interface is active.
*/
if (!list_empty(&priv->vif_list)) {
if (net_ratelimit())
wiphy_info(hw->wiphy,
"not enabling sniffer mode because STA interface is active\n");
return 0;
}
if (!priv->sniffer_enabled) {
if (mwl8k_cmd_enable_sniffer(hw, 1))
return 0;
priv->sniffer_enabled = true;
}
*total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
FIF_OTHER_BSS;
return 1;
}
static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
{
if (!list_empty(&priv->vif_list))
return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
return NULL;
}
static void mwl8k_configure_filter(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *total_flags,
u64 multicast)
{
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
/*
* AP firmware doesn't allow fine-grained control over
* the receive filter.
*/
if (priv->ap_fw) {
*total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
kfree(cmd);
return;
}
/*
* Enable hardware sniffer mode if FIF_CONTROL or
* FIF_OTHER_BSS is requested.
*/
if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
kfree(cmd);
return;
}
/* Clear unsupported feature flags */
*total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
if (mwl8k_fw_lock(hw)) {
kfree(cmd);
return;
}
if (priv->sniffer_enabled) {
mwl8k_cmd_enable_sniffer(hw, 0);
priv->sniffer_enabled = false;
}
if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
/*
* Disable the BSS filter.
*/
mwl8k_cmd_set_pre_scan(hw);
} else {
struct mwl8k_vif *mwl8k_vif;
const u8 *bssid;
/*
* Enable the BSS filter.
*
* If there is an active STA interface, use that
* interface's BSSID, otherwise use a dummy one
* (where the OUI part needs to be nonzero for
* the BSSID to be accepted by POST_SCAN).
*/
mwl8k_vif = mwl8k_first_vif(priv);
if (mwl8k_vif != NULL)
bssid = mwl8k_vif->vif->bss_conf.bssid;
else
bssid = "\x01\x00\x00\x00\x00\x00";
mwl8k_cmd_set_post_scan(hw, bssid);
}
}
/*
* If FIF_ALLMULTI is being requested, throw away the command
* packet that ->prepare_multicast() built and replace it with
* a command packet that enables reception of all multicast
* packets.
*/
if (*total_flags & FIF_ALLMULTI) {
kfree(cmd);
cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
}
if (cmd != NULL) {
mwl8k_post_cmd(hw, cmd);
kfree(cmd);
}
mwl8k_fw_unlock(hw);
}
static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
return mwl8k_cmd_set_rts_threshold(hw, value);
}
static int mwl8k_sta_remove(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct mwl8k_priv *priv = hw->priv;
if (priv->ap_fw)
return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
else
return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
}
static int mwl8k_sta_add(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct mwl8k_priv *priv = hw->priv;
int ret;
int i;
struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
struct ieee80211_key_conf *key;
if (!priv->ap_fw) {
ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
if (ret >= 0) {
MWL8K_STA(sta)->peer_id = ret;
if (sta->ht_cap.ht_supported)
MWL8K_STA(sta)->is_ampdu_allowed = true;
ret = 0;
}
} else {
ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
}
for (i = 0; i < NUM_WEP_KEYS; i++) {
key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
if (mwl8k_vif->wep_key_conf[i].enabled)
mwl8k_set_key(hw, SET_KEY, vif, sta, key);
}
return ret;
}
static int mwl8k_conf_tx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u16 queue,
const struct ieee80211_tx_queue_params *params)
{
struct mwl8k_priv *priv = hw->priv;
int rc;
rc = mwl8k_fw_lock(hw);
if (!rc) {
BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
memcpy(&priv->wmm_params[queue], params, sizeof(*params));
if (!priv->wmm_enabled)
rc = mwl8k_cmd_set_wmm_mode(hw, 1);
if (!rc) {
int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
rc = mwl8k_cmd_set_edca_params(hw, q,
params->cw_min,
params->cw_max,
params->aifs,
params->txop);
}
mwl8k_fw_unlock(hw);
}
return rc;
}
static int mwl8k_get_stats(struct ieee80211_hw *hw,
struct ieee80211_low_level_stats *stats)
{
return mwl8k_cmd_get_stat(hw, stats);
}
static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
struct survey_info *survey)
{
struct mwl8k_priv *priv = hw->priv;
struct ieee80211_conf *conf = &hw->conf;
if (idx != 0)
return -ENOENT;
survey->channel = conf->chandef.chan;
survey->filled = SURVEY_INFO_NOISE_DBM;
survey->noise = priv->noise;
return 0;
}
#define MAX_AMPDU_ATTEMPTS 5
static int
mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
enum ieee80211_ampdu_mlme_action action,
struct ieee80211_sta *sta, u16 tid, u16 *ssn,
u8 buf_size)
{
int i, rc = 0;
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_ampdu_stream *stream;
u8 *addr = sta->addr, idx;
struct mwl8k_sta *sta_info = MWL8K_STA(sta);
if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
return -ENOTSUPP;
spin_lock(&priv->stream_lock);
stream = mwl8k_lookup_stream(hw, addr, tid);
switch (action) {
case IEEE80211_AMPDU_RX_START:
case IEEE80211_AMPDU_RX_STOP:
break;
case IEEE80211_AMPDU_TX_START:
/* By the time we get here the hw queues may contain outgoing
* packets for this RA/TID that are not part of this BA
* session. The hw will assign sequence numbers to these
* packets as they go out. So if we query the hw for its next
* sequence number and use that for the SSN here, it may end up
* being wrong, which will lead to sequence number mismatch at
* the recipient. To avoid this, we reset the sequence number
* to O for the first MPDU in this BA stream.
*/
*ssn = 0;
if (stream == NULL) {
/* This means that somebody outside this driver called
* ieee80211_start_tx_ba_session. This is unexpected
* because we do our own rate control. Just warn and
* move on.
*/
wiphy_warn(hw->wiphy, "Unexpected call to %s. "
"Proceeding anyway.\n", __func__);
stream = mwl8k_add_stream(hw, sta, tid);
}
if (stream == NULL) {
wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
rc = -EBUSY;
break;
}
stream->state = AMPDU_STREAM_IN_PROGRESS;
/* Release the lock before we do the time consuming stuff */
spin_unlock(&priv->stream_lock);
for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
/* Check if link is still valid */
if (!sta_info->is_ampdu_allowed) {
spin_lock(&priv->stream_lock);
mwl8k_remove_stream(hw, stream);
spin_unlock(&priv->stream_lock);
return -EBUSY;
}
rc = mwl8k_check_ba(hw, stream, vif);
/* If HW restart is in progress mwl8k_post_cmd will
* return -EBUSY. Avoid retrying mwl8k_check_ba in
* such cases
*/
if (!rc || rc == -EBUSY)
break;
/*
* HW queues take time to be flushed, give them
* sufficient time
*/
msleep(1000);
}
spin_lock(&priv->stream_lock);
if (rc) {
wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
" attempts\n", tid, MAX_AMPDU_ATTEMPTS);
mwl8k_remove_stream(hw, stream);
rc = -EBUSY;
break;
}
ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
break;
case IEEE80211_AMPDU_TX_STOP_CONT:
case IEEE80211_AMPDU_TX_STOP_FLUSH:
case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
if (stream) {
if (stream->state == AMPDU_STREAM_ACTIVE) {
idx = stream->idx;
spin_unlock(&priv->stream_lock);
mwl8k_destroy_ba(hw, idx);
spin_lock(&priv->stream_lock);
}
mwl8k_remove_stream(hw, stream);
}
ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
break;
case IEEE80211_AMPDU_TX_OPERATIONAL:
BUG_ON(stream == NULL);
BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
spin_unlock(&priv->stream_lock);
rc = mwl8k_create_ba(hw, stream, buf_size, vif);
spin_lock(&priv->stream_lock);
if (!rc)
stream->state = AMPDU_STREAM_ACTIVE;
else {
idx = stream->idx;
spin_unlock(&priv->stream_lock);
mwl8k_destroy_ba(hw, idx);
spin_lock(&priv->stream_lock);
wiphy_debug(hw->wiphy,
"Failed adding stream for sta %pM tid %d\n",
addr, tid);
mwl8k_remove_stream(hw, stream);
}
break;
default:
rc = -ENOTSUPP;
}
spin_unlock(&priv->stream_lock);
return rc;
}
static const struct ieee80211_ops mwl8k_ops = {
.tx = mwl8k_tx,
.start = mwl8k_start,
.stop = mwl8k_stop,
.add_interface = mwl8k_add_interface,
.remove_interface = mwl8k_remove_interface,
.config = mwl8k_config,
.bss_info_changed = mwl8k_bss_info_changed,
.prepare_multicast = mwl8k_prepare_multicast,
.configure_filter = mwl8k_configure_filter,
.set_key = mwl8k_set_key,
.set_rts_threshold = mwl8k_set_rts_threshold,
.sta_add = mwl8k_sta_add,
.sta_remove = mwl8k_sta_remove,
.conf_tx = mwl8k_conf_tx,
.get_stats = mwl8k_get_stats,
.get_survey = mwl8k_get_survey,
.ampdu_action = mwl8k_ampdu_action,
};
static void mwl8k_finalize_join_worker(struct work_struct *work)
{
struct mwl8k_priv *priv =
container_of(work, struct mwl8k_priv, finalize_join_worker);
struct sk_buff *skb = priv->beacon_skb;
struct ieee80211_mgmt *mgmt = (void *)skb->data;
int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
mgmt->u.beacon.variable, len);
int dtim_period = 1;
if (tim && tim[1] >= 2)
dtim_period = tim[3];
mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
dev_kfree_skb(skb);
priv->beacon_skb = NULL;
}
enum {
MWL8363 = 0,
MWL8687,
MWL8366,
MWL8764,
};
#define MWL8K_8366_AP_FW_API 3
#define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
#define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
#define MWL8K_8764_AP_FW_API 1
#define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw"
#define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api)
static struct mwl8k_device_info mwl8k_info_tbl[] = {
[MWL8363] = {
.part_name = "88w8363",
.helper_image = "mwl8k/helper_8363.fw",
.fw_image_sta = "mwl8k/fmimage_8363.fw",
},
[MWL8687] = {
.part_name = "88w8687",
.helper_image = "mwl8k/helper_8687.fw",
.fw_image_sta = "mwl8k/fmimage_8687.fw",
},
[MWL8366] = {
.part_name = "88w8366",
.helper_image = "mwl8k/helper_8366.fw",
.fw_image_sta = "mwl8k/fmimage_8366.fw",
.fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
.fw_api_ap = MWL8K_8366_AP_FW_API,
.ap_rxd_ops = &rxd_ap_ops,
},
[MWL8764] = {
.part_name = "88w8764",
.fw_image_ap = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API),
.fw_api_ap = MWL8K_8764_AP_FW_API,
.ap_rxd_ops = &rxd_ap_ops,
},
};
MODULE_FIRMWARE("mwl8k/helper_8363.fw");
MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
MODULE_FIRMWARE("mwl8k/helper_8687.fw");
MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
MODULE_FIRMWARE("mwl8k/helper_8366.fw");
MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
{ PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
{ PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
{ PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
{ PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
{ PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
{ PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
{ PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, },
{ PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, },
{ PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
{ PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, },
{ },
};
MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
{
int rc;
printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
"Trying alternative firmware %s\n", pci_name(priv->pdev),
priv->fw_pref, priv->fw_alt);
rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
if (rc) {
printk(KERN_ERR "%s: Error requesting alt fw %s\n",
pci_name(priv->pdev), priv->fw_alt);
return rc;
}
return 0;
}
static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
{
struct mwl8k_priv *priv = context;
struct mwl8k_device_info *di = priv->device_info;
int rc;
switch (priv->fw_state) {
case FW_STATE_INIT:
if (!fw) {
printk(KERN_ERR "%s: Error requesting helper fw %s\n",
pci_name(priv->pdev), di->helper_image);
goto fail;
}
priv->fw_helper = fw;
rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
true);
if (rc && priv->fw_alt) {
rc = mwl8k_request_alt_fw(priv);
if (rc)
goto fail;
priv->fw_state = FW_STATE_LOADING_ALT;
} else if (rc)
goto fail;
else
priv->fw_state = FW_STATE_LOADING_PREF;
break;
case FW_STATE_LOADING_PREF:
if (!fw) {
if (priv->fw_alt) {
rc = mwl8k_request_alt_fw(priv);
if (rc)
goto fail;
priv->fw_state = FW_STATE_LOADING_ALT;
} else
goto fail;
} else {
priv->fw_ucode = fw;
rc = mwl8k_firmware_load_success(priv);
if (rc)
goto fail;
else
complete(&priv->firmware_loading_complete);
}
break;
case FW_STATE_LOADING_ALT:
if (!fw) {
printk(KERN_ERR "%s: Error requesting alt fw %s\n",
pci_name(priv->pdev), di->helper_image);
goto fail;
}
priv->fw_ucode = fw;
rc = mwl8k_firmware_load_success(priv);
if (rc)
goto fail;
else
complete(&priv->firmware_loading_complete);
break;
default:
printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
MWL8K_NAME, priv->fw_state);
BUG_ON(1);
}
return;
fail:
priv->fw_state = FW_STATE_ERROR;
complete(&priv->firmware_loading_complete);
device_release_driver(&priv->pdev->dev);
mwl8k_release_firmware(priv);
}
#define MAX_RESTART_ATTEMPTS 1
static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
bool nowait)
{
struct mwl8k_priv *priv = hw->priv;
int rc;
int count = MAX_RESTART_ATTEMPTS;
retry:
/* Reset firmware and hardware */
mwl8k_hw_reset(priv);
/* Ask userland hotplug daemon for the device firmware */
rc = mwl8k_request_firmware(priv, fw_image, nowait);
if (rc) {
wiphy_err(hw->wiphy, "Firmware files not found\n");
return rc;
}
if (nowait)
return rc;
/* Load firmware into hardware */
rc = mwl8k_load_firmware(hw);
if (rc)
wiphy_err(hw->wiphy, "Cannot start firmware\n");
/* Reclaim memory once firmware is successfully loaded */
mwl8k_release_firmware(priv);
if (rc && count) {
/* FW did not start successfully;
* lets try one more time
*/
count--;
wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
msleep(20);
goto retry;
}
return rc;
}
static int mwl8k_init_txqs(struct ieee80211_hw *hw)
{
struct mwl8k_priv *priv = hw->priv;
int rc = 0;
int i;
for (i = 0; i < mwl8k_tx_queues(priv); i++) {
rc = mwl8k_txq_init(hw, i);
if (rc)
break;
if (priv->ap_fw)
iowrite32(priv->txq[i].txd_dma,
priv->sram + priv->txq_offset[i]);
}
return rc;
}
/* initialize hw after successfully loading a firmware image */
static int mwl8k_probe_hw(struct ieee80211_hw *hw)
{
struct mwl8k_priv *priv = hw->priv;
int rc = 0;
int i;
if (priv->ap_fw) {
priv->rxd_ops = priv->device_info->ap_rxd_ops;
if (priv->rxd_ops == NULL) {
wiphy_err(hw->wiphy,
"Driver does not have AP firmware image support for this hardware\n");
rc = -ENOENT;
goto err_stop_firmware;
}
} else {
priv->rxd_ops = &rxd_sta_ops;
}
priv->sniffer_enabled = false;
priv->wmm_enabled = false;
priv->pending_tx_pkts = 0;
atomic_set(&priv->watchdog_event_pending, 0);
rc = mwl8k_rxq_init(hw, 0);
if (rc)
goto err_stop_firmware;
rxq_refill(hw, 0, INT_MAX);
/* For the sta firmware, we need to know the dma addresses of tx queues
* before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
* prior to issuing this command. But for the AP case, we learn the
* total number of queues from the result CMD_GET_HW_SPEC, so for this
* case we must initialize the tx queues after.
*/
priv->num_ampdu_queues = 0;
if (!priv->ap_fw) {
rc = mwl8k_init_txqs(hw);
if (rc)
goto err_free_queues;
}
iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
MWL8K_A2H_INT_BA_WATCHDOG,
priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
iowrite32(MWL8K_A2H_INT_OPC_DONE,
priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
IRQF_SHARED, MWL8K_NAME, hw);
if (rc) {
wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
goto err_free_queues;
}
/*
* When hw restart is requested,
* mac80211 will take care of clearing
* the ampdu streams, so do not clear
* the ampdu state here
*/
if (!priv->hw_restart_in_progress)
memset(priv->ampdu, 0, sizeof(priv->ampdu));
/*
* Temporarily enable interrupts. Initial firmware host
* commands use interrupts and avoid polling. Disable
* interrupts when done.
*/
iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
/* Get config data, mac addrs etc */
if (priv->ap_fw) {
rc = mwl8k_cmd_get_hw_spec_ap(hw);
if (!rc)
rc = mwl8k_init_txqs(hw);
if (!rc)
rc = mwl8k_cmd_set_hw_spec(hw);
} else {
rc = mwl8k_cmd_get_hw_spec_sta(hw);
}
if (rc) {
wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
goto err_free_irq;
}
/* Turn radio off */
rc = mwl8k_cmd_radio_disable(hw);
if (rc) {
wiphy_err(hw->wiphy, "Cannot disable\n");
goto err_free_irq;
}
/* Clear MAC address */
rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
if (rc) {
wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
goto err_free_irq;
}
/* Configure Antennas */
rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
if (rc)
wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
if (rc)
wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
/* Disable interrupts */
iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
free_irq(priv->pdev->irq, hw);
wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
priv->device_info->part_name,
priv->hw_rev, hw->wiphy->perm_addr,
priv->ap_fw ? "AP" : "STA",
(priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
(priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
return 0;
err_free_irq:
iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
free_irq(priv->pdev->irq, hw);
err_free_queues:
for (i = 0; i < mwl8k_tx_queues(priv); i++)
mwl8k_txq_deinit(hw, i);
mwl8k_rxq_deinit(hw, 0);
err_stop_firmware:
mwl8k_hw_reset(priv);
return rc;
}
/*
* invoke mwl8k_reload_firmware to change the firmware image after the device
* has already been registered
*/
static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
{
int i, rc = 0;
struct mwl8k_priv *priv = hw->priv;
struct mwl8k_vif *vif, *tmp_vif;
mwl8k_stop(hw);
mwl8k_rxq_deinit(hw, 0);
/*
* All the existing interfaces are re-added by the ieee80211_reconfig;
* which means driver should remove existing interfaces before calling
* ieee80211_restart_hw
*/
if (priv->hw_restart_in_progress)
list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
mwl8k_remove_vif(priv, vif);
for (i = 0; i < mwl8k_tx_queues(priv); i++)
mwl8k_txq_deinit(hw, i);
rc = mwl8k_init_firmware(hw, fw_image, false);
if (rc)
goto fail;
rc = mwl8k_probe_hw(hw);
if (rc)
goto fail;
if (priv->hw_restart_in_progress)
return rc;
rc = mwl8k_start(hw);
if (rc)
goto fail;
rc = mwl8k_config(hw, ~0);
if (rc)
goto fail;
for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
if (rc)
goto fail;
}
return rc;
fail:
printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
return rc;
}
static const struct ieee80211_iface_limit ap_if_limits[] = {
{ .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
{ .max = 1, .types = BIT(NL80211_IFTYPE_STATION) },
};
static const struct ieee80211_iface_combination ap_if_comb = {
.limits = ap_if_limits,
.n_limits = ARRAY_SIZE(ap_if_limits),
.max_interfaces = 8,
.num_different_channels = 1,
};
static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
{
struct ieee80211_hw *hw = priv->hw;
int i, rc;
rc = mwl8k_load_firmware(hw);
mwl8k_release_firmware(priv);
if (rc) {
wiphy_err(hw->wiphy, "Cannot start firmware\n");
return rc;
}
/*
* Extra headroom is the size of the required DMA header
* minus the size of the smallest 802.11 frame (CTS frame).
*/
hw->extra_tx_headroom =
sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
hw->channel_change_time = 10;
hw->queues = MWL8K_TX_WMM_QUEUES;
/* Set rssi values to dBm */
hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
/*
* Ask mac80211 to not to trigger PS mode
* based on PM bit of incoming frames.
*/
if (priv->ap_fw)
hw->flags |= IEEE80211_HW_AP_LINK_PS;
hw->vif_data_size = sizeof(struct mwl8k_vif);
hw->sta_data_size = sizeof(struct mwl8k_sta);
priv->macids_used = 0;
INIT_LIST_HEAD(&priv->vif_list);
/* Set default radio state and preamble */
priv->radio_on = false;
priv->radio_short_preamble = false;
/* Finalize join worker */
INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
/* Handle watchdog ba events */
INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
/* To reload the firmware if it crashes */
INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
/* TX reclaim and RX tasklets. */
tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
tasklet_disable(&priv->poll_tx_task);
tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
tasklet_disable(&priv->poll_rx_task);
/* Power management cookie */
priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
if (priv->cookie == NULL)
return -ENOMEM;
mutex_init(&priv->fw_mutex);
priv->fw_mutex_owner = NULL;
priv->fw_mutex_depth = 0;
priv->hostcmd_wait = NULL;
spin_lock_init(&priv->tx_lock);
spin_lock_init(&priv->stream_lock);
priv->tx_wait = NULL;
rc = mwl8k_probe_hw(hw);
if (rc)
goto err_free_cookie;
hw->wiphy->interface_modes = 0;
if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
hw->wiphy->iface_combinations = &ap_if_comb;
hw->wiphy->n_iface_combinations = 1;
}
if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
rc = ieee80211_register_hw(hw);
if (rc) {
wiphy_err(hw->wiphy, "Cannot register device\n");
goto err_unprobe_hw;
}
return 0;
err_unprobe_hw:
for (i = 0; i < mwl8k_tx_queues(priv); i++)
mwl8k_txq_deinit(hw, i);
mwl8k_rxq_deinit(hw, 0);
err_free_cookie:
if (priv->cookie != NULL)
pci_free_consistent(priv->pdev, 4,
priv->cookie, priv->cookie_dma);
return rc;
}
static int mwl8k_probe(struct pci_dev *pdev,
const struct pci_device_id *id)
{
static int printed_version;
struct ieee80211_hw *hw;
struct mwl8k_priv *priv;
struct mwl8k_device_info *di;
int rc;
if (!printed_version) {
printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
printed_version = 1;
}
rc = pci_enable_device(pdev);
if (rc) {
printk(KERN_ERR "%s: Cannot enable new PCI device\n",
MWL8K_NAME);
return rc;
}
rc = pci_request_regions(pdev, MWL8K_NAME);
if (rc) {
printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
MWL8K_NAME);
goto err_disable_device;
}
pci_set_master(pdev);
hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
if (hw == NULL) {
printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
rc = -ENOMEM;
goto err_free_reg;
}
SET_IEEE80211_DEV(hw, &pdev->dev);
pci_set_drvdata(pdev, hw);
priv = hw->priv;
priv->hw = hw;
priv->pdev = pdev;
priv->device_info = &mwl8k_info_tbl[id->driver_data];
if (id->driver_data == MWL8764)
priv->is_8764 = true;
priv->sram = pci_iomap(pdev, 0, 0x10000);
if (priv->sram == NULL) {
wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
rc = -EIO;
goto err_iounmap;
}
/*
* If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
* If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
*/
priv->regs = pci_iomap(pdev, 1, 0x10000);
if (priv->regs == NULL) {
priv->regs = pci_iomap(pdev, 2, 0x10000);
if (priv->regs == NULL) {
wiphy_err(hw->wiphy, "Cannot map device registers\n");
rc = -EIO;
goto err_iounmap;
}
}
/*
* Choose the initial fw image depending on user input. If a second
* image is available, make it the alternative image that will be
* loaded if the first one fails.
*/
init_completion(&priv->firmware_loading_complete);
di = priv->device_info;
if (ap_mode_default && di->fw_image_ap) {
priv->fw_pref = di->fw_image_ap;
priv->fw_alt = di->fw_image_sta;
} else if (!ap_mode_default && di->fw_image_sta) {
priv->fw_pref = di->fw_image_sta;
priv->fw_alt = di->fw_image_ap;
} else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
priv->fw_pref = di->fw_image_sta;
} else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
priv->fw_pref = di->fw_image_ap;
}
rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
if (rc)
goto err_stop_firmware;
priv->hw_restart_in_progress = false;
priv->running_bsses = 0;
return rc;
err_stop_firmware:
mwl8k_hw_reset(priv);
err_iounmap:
if (priv->regs != NULL)
pci_iounmap(pdev, priv->regs);
if (priv->sram != NULL)
pci_iounmap(pdev, priv->sram);
pci_set_drvdata(pdev, NULL);
ieee80211_free_hw(hw);
err_free_reg:
pci_release_regions(pdev);
err_disable_device:
pci_disable_device(pdev);
return rc;
}
static void mwl8k_remove(struct pci_dev *pdev)
{
struct ieee80211_hw *hw = pci_get_drvdata(pdev);
struct mwl8k_priv *priv;
int i;
if (hw == NULL)
return;
priv = hw->priv;
wait_for_completion(&priv->firmware_loading_complete);
if (priv->fw_state == FW_STATE_ERROR) {
mwl8k_hw_reset(priv);
goto unmap;
}
ieee80211_stop_queues(hw);
ieee80211_unregister_hw(hw);
/* Remove TX reclaim and RX tasklets. */
tasklet_kill(&priv->poll_tx_task);
tasklet_kill(&priv->poll_rx_task);
/* Stop hardware */
mwl8k_hw_reset(priv);
/* Return all skbs to mac80211 */
for (i = 0; i < mwl8k_tx_queues(priv); i++)
mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
for (i = 0; i < mwl8k_tx_queues(priv); i++)
mwl8k_txq_deinit(hw, i);
mwl8k_rxq_deinit(hw, 0);
pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
unmap:
pci_iounmap(pdev, priv->regs);
pci_iounmap(pdev, priv->sram);
pci_set_drvdata(pdev, NULL);
ieee80211_free_hw(hw);
pci_release_regions(pdev);
pci_disable_device(pdev);
}
static struct pci_driver mwl8k_driver = {
.name = MWL8K_NAME,
.id_table = mwl8k_pci_id_table,
.probe = mwl8k_probe,
.remove = mwl8k_remove,
};
module_pci_driver(mwl8k_driver);
MODULE_DESCRIPTION(MWL8K_DESC);
MODULE_VERSION(MWL8K_VERSION);
MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
MODULE_LICENSE("GPL");
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