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path: root/drivers/net/wireless/cisco/airo.c
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Diffstat (limited to 'drivers/net/wireless/cisco/airo.c')
-rw-r--r--drivers/net/wireless/cisco/airo.c127
1 files changed, 59 insertions, 68 deletions
diff --git a/drivers/net/wireless/cisco/airo.c b/drivers/net/wireless/cisco/airo.c
index 87b9398b03fd..e35e1380ae43 100644
--- a/drivers/net/wireless/cisco/airo.c
+++ b/drivers/net/wireless/cisco/airo.c
@@ -1115,7 +1115,8 @@ static int enable_MAC(struct airo_info *ai, int lock);
static void disable_MAC(struct airo_info *ai, int lock);
static void enable_interrupts(struct airo_info*);
static void disable_interrupts(struct airo_info*);
-static u16 issuecommand(struct airo_info*, Cmd *pCmd, Resp *pRsp);
+static u16 issuecommand(struct airo_info*, Cmd *pCmd, Resp *pRsp,
+ bool may_sleep);
static int bap_setup(struct airo_info*, u16 rid, u16 offset, int whichbap);
static int aux_bap_read(struct airo_info*, __le16 *pu16Dst, int bytelen,
int whichbap);
@@ -1130,8 +1131,10 @@ static int PC4500_writerid(struct airo_info*, u16 rid, const void
static int do_writerid(struct airo_info*, u16 rid, const void *rid_data,
int len, int dummy);
static u16 transmit_allocate(struct airo_info*, int lenPayload, int raw);
-static int transmit_802_3_packet(struct airo_info*, int len, char *pPacket);
-static int transmit_802_11_packet(struct airo_info*, int len, char *pPacket);
+static int transmit_802_3_packet(struct airo_info*, int len, char *pPacket,
+ bool may_sleep);
+static int transmit_802_11_packet(struct airo_info*, int len, char *pPacket,
+ bool may_sleep);
static int mpi_send_packet(struct net_device *dev);
static void mpi_unmap_card(struct pci_dev *pci);
@@ -1144,7 +1147,6 @@ static int airo_thread(void *data);
static void timer_func(struct net_device *dev);
static int airo_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
static struct iw_statistics *airo_get_wireless_stats(struct net_device *dev);
-static void airo_read_wireless_stats(struct airo_info *local);
#ifdef CISCO_EXT
static int readrids(struct net_device *dev, aironet_ioctl *comp);
static int writerids(struct net_device *dev, aironet_ioctl *comp);
@@ -1200,7 +1202,6 @@ struct airo_info {
#define JOB_MIC 5
#define JOB_EVENT 6
#define JOB_AUTOWEP 7
-#define JOB_WSTATS 8
#define JOB_SCAN_RESULTS 9
unsigned long jobs;
int (*bap_read)(struct airo_info*, __le16 *pu16Dst, int bytelen,
@@ -1755,7 +1756,7 @@ static int readBSSListRid(struct airo_info *ai, int first,
if (down_interruptible(&ai->sem))
return -ERESTARTSYS;
ai->list_bss_task = current;
- issuecommand(ai, &cmd, &rsp);
+ issuecommand(ai, &cmd, &rsp, true);
up(&ai->sem);
/* Let the command take effect */
schedule_timeout_uninterruptible(3 * HZ);
@@ -2098,7 +2099,7 @@ static void get_tx_error(struct airo_info *ai, s32 fid)
}
}
-static void airo_end_xmit(struct net_device *dev)
+static void airo_end_xmit(struct net_device *dev, bool may_sleep)
{
u16 status;
int i;
@@ -2109,7 +2110,7 @@ static void airo_end_xmit(struct net_device *dev)
clear_bit(JOB_XMIT, &priv->jobs);
clear_bit(FLAG_PENDING_XMIT, &priv->flags);
- status = transmit_802_3_packet (priv, fids[fid], skb->data);
+ status = transmit_802_3_packet(priv, fids[fid], skb->data, may_sleep);
up(&priv->sem);
i = 0;
@@ -2166,11 +2167,11 @@ static netdev_tx_t airo_start_xmit(struct sk_buff *skb,
set_bit(JOB_XMIT, &priv->jobs);
wake_up_interruptible(&priv->thr_wait);
} else
- airo_end_xmit(dev);
+ airo_end_xmit(dev, false);
return NETDEV_TX_OK;
}
-static void airo_end_xmit11(struct net_device *dev)
+static void airo_end_xmit11(struct net_device *dev, bool may_sleep)
{
u16 status;
int i;
@@ -2181,7 +2182,7 @@ static void airo_end_xmit11(struct net_device *dev)
clear_bit(JOB_XMIT11, &priv->jobs);
clear_bit(FLAG_PENDING_XMIT11, &priv->flags);
- status = transmit_802_11_packet (priv, fids[fid], skb->data);
+ status = transmit_802_11_packet(priv, fids[fid], skb->data, may_sleep);
up(&priv->sem);
i = MAX_FIDS / 2;
@@ -2245,7 +2246,7 @@ static netdev_tx_t airo_start_xmit11(struct sk_buff *skb,
set_bit(JOB_XMIT11, &priv->jobs);
wake_up_interruptible(&priv->thr_wait);
} else
- airo_end_xmit11(dev);
+ airo_end_xmit11(dev, false);
return NETDEV_TX_OK;
}
@@ -2288,18 +2289,14 @@ static struct net_device_stats *airo_get_stats(struct net_device *dev)
struct airo_info *local = dev->ml_priv;
if (!test_bit(JOB_STATS, &local->jobs)) {
- /* Get stats out of the card if available */
- if (down_trylock(&local->sem) != 0) {
- set_bit(JOB_STATS, &local->jobs);
- wake_up_interruptible(&local->thr_wait);
- } else
- airo_read_stats(dev);
+ set_bit(JOB_STATS, &local->jobs);
+ wake_up_interruptible(&local->thr_wait);
}
return &dev->stats;
}
-static void airo_set_promisc(struct airo_info *ai)
+static void airo_set_promisc(struct airo_info *ai, bool may_sleep)
{
Cmd cmd;
Resp rsp;
@@ -2308,7 +2305,7 @@ static void airo_set_promisc(struct airo_info *ai)
cmd.cmd = CMD_SETMODE;
clear_bit(JOB_PROMISC, &ai->jobs);
cmd.parm0=(ai->flags&IFF_PROMISC) ? PROMISC : NOPROMISC;
- issuecommand(ai, &cmd, &rsp);
+ issuecommand(ai, &cmd, &rsp, may_sleep);
up(&ai->sem);
}
@@ -2322,7 +2319,7 @@ static void airo_set_multicast_list(struct net_device *dev)
set_bit(JOB_PROMISC, &ai->jobs);
wake_up_interruptible(&ai->thr_wait);
} else
- airo_set_promisc(ai);
+ airo_set_promisc(ai, false);
}
if ((dev->flags&IFF_ALLMULTI) || !netdev_mc_empty(dev)) {
@@ -2482,7 +2479,7 @@ static int mpi_init_descriptors (struct airo_info *ai)
cmd.parm0 = FID_RX;
cmd.parm1 = (ai->rxfids[0].card_ram_off - ai->pciaux);
cmd.parm2 = MPI_MAX_FIDS;
- rc = issuecommand(ai, &cmd, &rsp);
+ rc = issuecommand(ai, &cmd, &rsp, true);
if (rc != SUCCESS) {
airo_print_err(ai->dev->name, "Couldn't allocate RX FID");
return rc;
@@ -2510,7 +2507,7 @@ static int mpi_init_descriptors (struct airo_info *ai)
}
ai->txfids[i-1].tx_desc.eoc = 1; /* Last descriptor has EOC set */
- rc = issuecommand(ai, &cmd, &rsp);
+ rc = issuecommand(ai, &cmd, &rsp, true);
if (rc != SUCCESS) {
airo_print_err(ai->dev->name, "Couldn't allocate TX FID");
return rc;
@@ -2524,7 +2521,7 @@ static int mpi_init_descriptors (struct airo_info *ai)
cmd.parm0 = RID_RW;
cmd.parm1 = (ai->config_desc.card_ram_off - ai->pciaux);
cmd.parm2 = 1; /* Magic number... */
- rc = issuecommand(ai, &cmd, &rsp);
+ rc = issuecommand(ai, &cmd, &rsp, true);
if (rc != SUCCESS) {
airo_print_err(ai->dev->name, "Couldn't allocate RID");
return rc;
@@ -3150,15 +3147,13 @@ static int airo_thread(void *data)
}
if (test_bit(JOB_XMIT, &ai->jobs))
- airo_end_xmit(dev);
+ airo_end_xmit(dev, true);
else if (test_bit(JOB_XMIT11, &ai->jobs))
- airo_end_xmit11(dev);
+ airo_end_xmit11(dev, true);
else if (test_bit(JOB_STATS, &ai->jobs))
airo_read_stats(dev);
- else if (test_bit(JOB_WSTATS, &ai->jobs))
- airo_read_wireless_stats(ai);
else if (test_bit(JOB_PROMISC, &ai->jobs))
- airo_set_promisc(ai);
+ airo_set_promisc(ai, true);
else if (test_bit(JOB_MIC, &ai->jobs))
micinit(ai);
else if (test_bit(JOB_EVENT, &ai->jobs))
@@ -3281,11 +3276,9 @@ static void airo_handle_link(struct airo_info *ai)
set_bit(FLAG_UPDATE_UNI, &ai->flags);
set_bit(FLAG_UPDATE_MULTI, &ai->flags);
- if (down_trylock(&ai->sem) != 0) {
- set_bit(JOB_EVENT, &ai->jobs);
- wake_up_interruptible(&ai->thr_wait);
- } else
- airo_send_event(ai->dev);
+ set_bit(JOB_EVENT, &ai->jobs);
+ wake_up_interruptible(&ai->thr_wait);
+
netif_carrier_on(ai->dev);
} else if (!scan_forceloss) {
if (auto_wep && !ai->expires) {
@@ -3609,7 +3602,7 @@ static int enable_MAC(struct airo_info *ai, int lock)
if (!test_bit(FLAG_ENABLED, &ai->flags)) {
memset(&cmd, 0, sizeof(cmd));
cmd.cmd = MAC_ENABLE;
- rc = issuecommand(ai, &cmd, &rsp);
+ rc = issuecommand(ai, &cmd, &rsp, true);
if (rc == SUCCESS)
set_bit(FLAG_ENABLED, &ai->flags);
} else
@@ -3641,7 +3634,7 @@ static void disable_MAC(struct airo_info *ai, int lock)
netif_carrier_off(ai->dev);
memset(&cmd, 0, sizeof(cmd));
cmd.cmd = MAC_DISABLE; // disable in case already enabled
- issuecommand(ai, &cmd, &rsp);
+ issuecommand(ai, &cmd, &rsp, true);
clear_bit(FLAG_ENABLED, &ai->flags);
}
if (lock == 1)
@@ -3844,7 +3837,7 @@ static u16 setup_card(struct airo_info *ai, u8 *mac, int lock)
cmd.parm0 = cmd.parm1 = cmd.parm2 = 0;
if (lock && down_interruptible(&ai->sem))
return ERROR;
- if (issuecommand(ai, &cmd, &rsp) != SUCCESS) {
+ if (issuecommand(ai, &cmd, &rsp, true) != SUCCESS) {
if (lock)
up(&ai->sem);
return ERROR;
@@ -3854,7 +3847,7 @@ static u16 setup_card(struct airo_info *ai, u8 *mac, int lock)
// Let's figure out if we need to use the AUX port
if (!test_bit(FLAG_MPI,&ai->flags)) {
cmd.cmd = CMD_ENABLEAUX;
- if (issuecommand(ai, &cmd, &rsp) != SUCCESS) {
+ if (issuecommand(ai, &cmd, &rsp, true) != SUCCESS) {
if (lock)
up(&ai->sem);
airo_print_err(ai->dev->name, "Error checking for AUX port");
@@ -3966,7 +3959,8 @@ static u16 setup_card(struct airo_info *ai, u8 *mac, int lock)
return SUCCESS;
}
-static u16 issuecommand(struct airo_info *ai, Cmd *pCmd, Resp *pRsp)
+static u16 issuecommand(struct airo_info *ai, Cmd *pCmd, Resp *pRsp,
+ bool may_sleep)
{
// Im really paranoid about letting it run forever!
int max_tries = 600000;
@@ -3983,8 +3977,8 @@ static u16 issuecommand(struct airo_info *ai, Cmd *pCmd, Resp *pRsp)
if ((IN4500(ai, COMMAND)) == pCmd->cmd)
// PC4500 didn't notice command, try again
OUT4500(ai, COMMAND, pCmd->cmd);
- if (!in_atomic() && (max_tries & 255) == 0)
- schedule();
+ if (may_sleep && (max_tries & 255) == 0)
+ cond_resched();
}
if (max_tries == -1) {
@@ -4141,7 +4135,7 @@ static int PC4500_accessrid(struct airo_info *ai, u16 rid, u16 accmd)
memset(&cmd, 0, sizeof(cmd));
cmd.cmd = accmd;
cmd.parm0 = rid;
- status = issuecommand(ai, &cmd, &rsp);
+ status = issuecommand(ai, &cmd, &rsp, true);
if (status != 0) return status;
if ((rsp.status & 0x7F00) != 0) {
return (accmd << 8) + (rsp.rsp0 & 0xFF);
@@ -4177,7 +4171,7 @@ static int PC4500_readrid(struct airo_info *ai, u16 rid, void *pBuf, int len, in
memcpy_toio(ai->config_desc.card_ram_off,
&ai->config_desc.rid_desc, sizeof(Rid));
- rc = issuecommand(ai, &cmd, &rsp);
+ rc = issuecommand(ai, &cmd, &rsp, true);
if (rsp.status & 0x7f00)
rc = rsp.rsp0;
@@ -4256,7 +4250,7 @@ static int PC4500_writerid(struct airo_info *ai, u16 rid,
memcpy(ai->config_desc.virtual_host_addr,
pBuf, len);
- rc = issuecommand(ai, &cmd, &rsp);
+ rc = issuecommand(ai, &cmd, &rsp, true);
if ((rc & 0xff00) != 0) {
airo_print_err(ai->dev->name, "%s: Write rid Error %d",
__func__, rc);
@@ -4302,7 +4296,7 @@ static u16 transmit_allocate(struct airo_info *ai, int lenPayload, int raw)
cmd.parm0 = lenPayload;
if (down_interruptible(&ai->sem))
return ERROR;
- if (issuecommand(ai, &cmd, &rsp) != SUCCESS) {
+ if (issuecommand(ai, &cmd, &rsp, true) != SUCCESS) {
txFid = ERROR;
goto done;
}
@@ -4348,7 +4342,8 @@ done:
/* In general BAP1 is dedicated to transmiting packets. However,
since we need a BAP when accessing RIDs, we also use BAP1 for that.
Make sure the BAP1 spinlock is held when this is called. */
-static int transmit_802_3_packet(struct airo_info *ai, int len, char *pPacket)
+static int transmit_802_3_packet(struct airo_info *ai, int len, char *pPacket,
+ bool may_sleep)
{
__le16 payloadLen;
Cmd cmd;
@@ -4386,12 +4381,14 @@ static int transmit_802_3_packet(struct airo_info *ai, int len, char *pPacket)
memset(&cmd, 0, sizeof(cmd));
cmd.cmd = CMD_TRANSMIT;
cmd.parm0 = txFid;
- if (issuecommand(ai, &cmd, &rsp) != SUCCESS) return ERROR;
+ if (issuecommand(ai, &cmd, &rsp, may_sleep) != SUCCESS)
+ return ERROR;
if ((rsp.status & 0xFF00) != 0) return ERROR;
return SUCCESS;
}
-static int transmit_802_11_packet(struct airo_info *ai, int len, char *pPacket)
+static int transmit_802_11_packet(struct airo_info *ai, int len, char *pPacket,
+ bool may_sleep)
{
__le16 fc, payloadLen;
Cmd cmd;
@@ -4426,7 +4423,8 @@ static int transmit_802_11_packet(struct airo_info *ai, int len, char *pPacket)
memset(&cmd, 0, sizeof(cmd));
cmd.cmd = CMD_TRANSMIT;
cmd.parm0 = txFid;
- if (issuecommand(ai, &cmd, &rsp) != SUCCESS) return ERROR;
+ if (issuecommand(ai, &cmd, &rsp, may_sleep) != SUCCESS)
+ return ERROR;
if ((rsp.status & 0xFF00) != 0) return ERROR;
return SUCCESS;
}
@@ -5490,7 +5488,7 @@ static int proc_BSSList_open(struct inode *inode, struct file *file)
kfree(file->private_data);
return -ERESTARTSYS;
}
- issuecommand(ai, &cmd, &rsp);
+ issuecommand(ai, &cmd, &rsp, true);
up(&ai->sem);
data->readlen = 0;
return 0;
@@ -5627,7 +5625,7 @@ static int __maybe_unused airo_pci_suspend(struct device *dev_d)
netif_device_detach(dev);
ai->power = PMSG_SUSPEND;
cmd.cmd = HOSTSLEEP;
- issuecommand(ai, &cmd, &rsp);
+ issuecommand(ai, &cmd, &rsp, true);
device_wakeup_enable(dev_d);
return 0;
@@ -5787,7 +5785,7 @@ static int airo_get_quality (StatusRid *status_rid, CapabilityRid *cap_rid)
}
#define airo_get_max_quality(cap_rid) (memcmp((cap_rid)->prodName, "350", 3) ? 0x20 : 0xa0)
-#define airo_get_avg_quality(cap_rid) (memcmp((cap_rid)->prodName, "350", 3) ? 0x10 : 0x50);
+#define airo_get_avg_quality(cap_rid) (memcmp((cap_rid)->prodName, "350", 3) ? 0x10 : 0x50)
/*------------------------------------------------------------------*/
/*
@@ -5970,7 +5968,7 @@ static int airo_set_wap(struct net_device *dev,
cmd.cmd = CMD_LOSE_SYNC;
if (down_interruptible(&local->sem))
return -ERESTARTSYS;
- issuecommand(local, &cmd, &rsp);
+ issuecommand(local, &cmd, &rsp, true);
up(&local->sem);
} else {
memset(APList_rid, 0, sizeof(*APList_rid));
@@ -7067,6 +7065,7 @@ static int airo_set_power(struct net_device *dev,
local->config.rmode &= ~RXMODE_MASK;
local->config.rmode |= RXMODE_BC_MC_ADDR;
set_bit (FLAG_COMMIT, &local->flags);
+ break;
case IW_POWER_ON:
/* This is broken, fixme ;-) */
break;
@@ -7268,7 +7267,7 @@ static int airo_set_scan(struct net_device *dev,
ai->scan_timeout = RUN_AT(3*HZ);
memset(&cmd, 0, sizeof(cmd));
cmd.cmd = CMD_LISTBSS;
- issuecommand(ai, &cmd, &rsp);
+ issuecommand(ai, &cmd, &rsp, true);
wake = 1;
out:
@@ -7535,7 +7534,7 @@ static int airo_config_commit(struct net_device *dev,
writeConfigRid(local, 0);
enable_MAC(local, 0);
if (test_bit (FLAG_RESET, &local->flags))
- airo_set_promisc(local);
+ airo_set_promisc(local, true);
else
up(&local->sem);
@@ -7732,15 +7731,12 @@ static void airo_read_wireless_stats(struct airo_info *local)
__le32 *vals = stats_rid.vals;
/* Get stats out of the card */
- clear_bit(JOB_WSTATS, &local->jobs);
- if (local->power.event) {
- up(&local->sem);
+ if (local->power.event)
return;
- }
+
readCapabilityRid(local, &cap_rid, 0);
readStatusRid(local, &status_rid, 0);
readStatsRid(local, &stats_rid, RID_STATS, 0);
- up(&local->sem);
/* The status */
local->wstats.status = le16_to_cpu(status_rid.mode);
@@ -7783,15 +7779,10 @@ static struct iw_statistics *airo_get_wireless_stats(struct net_device *dev)
{
struct airo_info *local = dev->ml_priv;
- if (!test_bit(JOB_WSTATS, &local->jobs)) {
- /* Get stats out of the card if available */
- if (down_trylock(&local->sem) != 0) {
- set_bit(JOB_WSTATS, &local->jobs);
- wake_up_interruptible(&local->thr_wait);
- } else
- airo_read_wireless_stats(local);
+ if (!down_interruptible(&local->sem)) {
+ airo_read_wireless_stats(local);
+ up(&local->sem);
}
-
return &local->wstats;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.