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linux/drivers/net/wireless/wl3501_cs.c
David S. Miller babcda74e9 drivers/net: Kill now superfluous ->last_rx stores. 
The generic packet receive code takes care of setting
netdev->last_rx when necessary, for the sake of the
bonding ARP monitor.

Drivers need not do it any more.

Some cases had to be skipped over because the drivers
were making use of the ->last_rx value themselves.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-03 21:11:17 -08:00

2133 lines
58 KiB
C
Raw Blame History

/*
* WL3501 Wireless LAN PCMCIA Card Driver for Linux
* Written originally for Linux 2.0.30 by Fox Chen, mhchen@golf.ccl.itri.org.tw
* Ported to 2.2, 2.4 & 2.5 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
* Wireless extensions in 2.4 by Gustavo Niemeyer <niemeyer@conectiva.com>
*
* References used by Fox Chen while writing the original driver for 2.0.30:
*
* 1. WL24xx packet drivers (tooasm.asm)
* 2. Access Point Firmware Interface Specification for IEEE 802.11 SUTRO
* 3. IEEE 802.11
* 4. Linux network driver (/usr/src/linux/drivers/net)
* 5. ISA card driver - wl24.c
* 6. Linux PCMCIA skeleton driver - skeleton.c
* 7. Linux PCMCIA 3c589 network driver - 3c589_cs.c
*
* Tested with WL2400 firmware 1.2, Linux 2.0.30, and pcmcia-cs-2.9.12
* 1. Performance: about 165 Kbytes/sec in TCP/IP with Ad-Hoc mode.
* rsh 192.168.1.3 "dd if=/dev/zero bs=1k count=1000" > /dev/null
* (Specification 2M bits/sec. is about 250 Kbytes/sec., but we must deduct
* ETHER/IP/UDP/TCP header, and acknowledgement overhead)
*
* Tested with Planet AP in 2.4.17, 184 Kbytes/s in UDP in Infrastructure mode,
* 173 Kbytes/s in TCP.
*
* Tested with Planet AP in 2.5.73-bk, 216 Kbytes/s in Infrastructure mode
* with a SMP machine (dual pentium 100), using pktgen, 432 pps (pkt_size = 60)
*/
#include <linux/delay.h>
#include <linux/types.h>
#include <linux/ethtool.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/in.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/fcntl.h>
#include <linux/if_arp.h>
#include <linux/ioport.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/wireless.h>
#include <net/iw_handler.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#include "wl3501.h"
#ifndef __i386__
#define slow_down_io()
#endif
/* For rough constant delay */
#define WL3501_NOPLOOP(n) { int x = 0; while (x++ < n) slow_down_io(); }
/*
* All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If you do not
* define PCMCIA_DEBUG at all, all the debug code will be left out. If you
* compile with PCMCIA_DEBUG=0, the debug code will be present but disabled --
* but it can then be enabled for specific modules at load time with a
* 'pc_debug=#' option to insmod.
*/
#define PCMCIA_DEBUG 0
#ifdef PCMCIA_DEBUG
static int pc_debug = PCMCIA_DEBUG;
module_param(pc_debug, int, 0);
#define dprintk(n, format, args...) \
{ if (pc_debug > (n)) \
printk(KERN_INFO "%s: " format "\n", __func__ , ##args); }
#else
#define dprintk(n, format, args...)
#endif
#define wl3501_outb(a, b) { outb(a, b); slow_down_io(); }
#define wl3501_outb_p(a, b) { outb_p(a, b); slow_down_io(); }
#define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); }
#define WL3501_RELEASE_TIMEOUT (25 * HZ)
#define WL3501_MAX_ADHOC_TRIES 16
#define WL3501_RESUME 0
#define WL3501_SUSPEND 1
/*
* The event() function is this driver's Card Services event handler. It will
* be called by Card Services when an appropriate card status event is
* received. The config() and release() entry points are used to configure or
* release a socket, in response to card insertion and ejection events. They
* are invoked from the wl24 event handler.
*/
static int wl3501_config(struct pcmcia_device *link);
static void wl3501_release(struct pcmcia_device *link);
/*
* The dev_info variable is the "key" that is used to match up this
* device driver with appropriate cards, through the card configuration
* database.
*/
static dev_info_t wl3501_dev_info = "wl3501_cs";
static int wl3501_chan2freq[] = {
[0] = 2412, [1] = 2417, [2] = 2422, [3] = 2427, [4] = 2432,
[5] = 2437, [6] = 2442, [7] = 2447, [8] = 2452, [9] = 2457,
[10] = 2462, [11] = 2467, [12] = 2472, [13] = 2477,
};
static const struct {
int reg_domain;
int min, max, deflt;
} iw_channel_table[] = {
{
.reg_domain = IW_REG_DOMAIN_FCC,
.min = 1,
.max = 11,
.deflt = 1,
},
{
.reg_domain = IW_REG_DOMAIN_DOC,
.min = 1,
.max = 11,
.deflt = 1,
},
{
.reg_domain = IW_REG_DOMAIN_ETSI,
.min = 1,
.max = 13,
.deflt = 1,
},
{
.reg_domain = IW_REG_DOMAIN_SPAIN,
.min = 10,
.max = 11,
.deflt = 10,
},
{
.reg_domain = IW_REG_DOMAIN_FRANCE,
.min = 10,
.max = 13,
.deflt = 10,
},
{
.reg_domain = IW_REG_DOMAIN_MKK,
.min = 14,
.max = 14,
.deflt = 14,
},
{
.reg_domain = IW_REG_DOMAIN_MKK1,
.min = 1,
.max = 14,
.deflt = 1,
},
{
.reg_domain = IW_REG_DOMAIN_ISRAEL,
.min = 3,
.max = 9,
.deflt = 9,
},
};
/**
* iw_valid_channel - validate channel in regulatory domain
* @reg_comain - regulatory domain
* @channel - channel to validate
*
* Returns 0 if invalid in the specified regulatory domain, non-zero if valid.
*/
static int iw_valid_channel(int reg_domain, int channel)
{
int i, rc = 0;
for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
if (reg_domain == iw_channel_table[i].reg_domain) {
rc = channel >= iw_channel_table[i].min &&
channel <= iw_channel_table[i].max;
break;
}
return rc;
}
/**
* iw_default_channel - get default channel for a regulatory domain
* @reg_comain - regulatory domain
*
* Returns the default channel for a regulatory domain
*/
static int iw_default_channel(int reg_domain)
{
int i, rc = 1;
for (i = 0; i < ARRAY_SIZE(iw_channel_table); i++)
if (reg_domain == iw_channel_table[i].reg_domain) {
rc = iw_channel_table[i].deflt;
break;
}
return rc;
}
static void iw_set_mgmt_info_element(enum iw_mgmt_info_element_ids id,
struct iw_mgmt_info_element *el,
void *value, int len)
{
el->id = id;
el->len = len;
memcpy(el->data, value, len);
}
static void iw_copy_mgmt_info_element(struct iw_mgmt_info_element *to,
struct iw_mgmt_info_element *from)
{
iw_set_mgmt_info_element(from->id, to, from->data, from->len);
}
static inline void wl3501_switch_page(struct wl3501_card *this, u8 page)
{
wl3501_outb(page, this->base_addr + WL3501_NIC_BSS);
}
/*
* Get Ethernet MAC addresss.
*
* WARNING: We switch to FPAGE0 and switc back again.
* Making sure there is no other WL function beening called by ISR.
*/
static int wl3501_get_flash_mac_addr(struct wl3501_card *this)
{
int base_addr = this->base_addr;
/* get MAC addr */
wl3501_outb(WL3501_BSS_FPAGE3, base_addr + WL3501_NIC_BSS); /* BSS */
wl3501_outb(0x00, base_addr + WL3501_NIC_LMAL); /* LMAL */
wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH); /* LMAH */
/* wait for reading EEPROM */
WL3501_NOPLOOP(100);
this->mac_addr[0] = inb(base_addr + WL3501_NIC_IODPA);
WL3501_NOPLOOP(100);
this->mac_addr[1] = inb(base_addr + WL3501_NIC_IODPA);
WL3501_NOPLOOP(100);
this->mac_addr[2] = inb(base_addr + WL3501_NIC_IODPA);
WL3501_NOPLOOP(100);
this->mac_addr[3] = inb(base_addr + WL3501_NIC_IODPA);
WL3501_NOPLOOP(100);
this->mac_addr[4] = inb(base_addr + WL3501_NIC_IODPA);
WL3501_NOPLOOP(100);
this->mac_addr[5] = inb(base_addr + WL3501_NIC_IODPA);
WL3501_NOPLOOP(100);
this->reg_domain = inb(base_addr + WL3501_NIC_IODPA);
WL3501_NOPLOOP(100);
wl3501_outb(WL3501_BSS_FPAGE0, base_addr + WL3501_NIC_BSS);
wl3501_outb(0x04, base_addr + WL3501_NIC_LMAL);
wl3501_outb(0x40, base_addr + WL3501_NIC_LMAH);
WL3501_NOPLOOP(100);
this->version[0] = inb(base_addr + WL3501_NIC_IODPA);
WL3501_NOPLOOP(100);
this->version[1] = inb(base_addr + WL3501_NIC_IODPA);
/* switch to SRAM Page 0 (for safety) */
wl3501_switch_page(this, WL3501_BSS_SPAGE0);
/* The MAC addr should be 00:60:... */
return this->mac_addr[0] == 0x00 && this->mac_addr[1] == 0x60;
}
/**
* wl3501_set_to_wla - Move 'size' bytes from PC to card
* @dest: Card addressing space
* @src: PC addressing space
* @size: Bytes to move
*
* Move 'size' bytes from PC to card. (Shouldn't be interrupted)
*/
static void wl3501_set_to_wla(struct wl3501_card *this, u16 dest, void *src,
int size)
{
/* switch to SRAM Page 0 */
wl3501_switch_page(this, (dest & 0x8000) ? WL3501_BSS_SPAGE1 :
WL3501_BSS_SPAGE0);
/* set LMAL and LMAH */
wl3501_outb(dest & 0xff, this->base_addr + WL3501_NIC_LMAL);
wl3501_outb(((dest >> 8) & 0x7f), this->base_addr + WL3501_NIC_LMAH);
/* rep out to Port A */
wl3501_outsb(this->base_addr + WL3501_NIC_IODPA, src, size);
}
/**
* wl3501_get_from_wla - Move 'size' bytes from card to PC
* @src: Card addressing space
* @dest: PC addressing space
* @size: Bytes to move
*
* Move 'size' bytes from card to PC. (Shouldn't be interrupted)
*/
static void wl3501_get_from_wla(struct wl3501_card *this, u16 src, void *dest,
int size)
{
/* switch to SRAM Page 0 */
wl3501_switch_page(this, (src & 0x8000) ? WL3501_BSS_SPAGE1 :
WL3501_BSS_SPAGE0);
/* set LMAL and LMAH */
wl3501_outb(src & 0xff, this->base_addr + WL3501_NIC_LMAL);
wl3501_outb((src >> 8) & 0x7f, this->base_addr + WL3501_NIC_LMAH);
/* rep get from Port A */
insb(this->base_addr + WL3501_NIC_IODPA, dest, size);
}
/*
* Get/Allocate a free Tx Data Buffer
*
* *--------------*-----------------*----------------------------------*
* | PLCP | MAC Header | DST SRC Data ... |
* | (24 bytes) | (30 bytes) | (6) (6) (Ethernet Row Data) |
* *--------------*-----------------*----------------------------------*
* \ \- IEEE 802.11 -/ \-------------- len --------------/
* \-struct wl3501_80211_tx_hdr--/ \-------- Ethernet Frame -------/
*
* Return = Postion in Card
*/
static u16 wl3501_get_tx_buffer(struct wl3501_card *this, u16 len)
{
u16 next, blk_cnt = 0, zero = 0;
u16 full_len = sizeof(struct wl3501_80211_tx_hdr) + len;
u16 ret = 0;
if (full_len > this->tx_buffer_cnt * 254)
goto out;
ret = this->tx_buffer_head;
while (full_len) {
if (full_len < 254)
full_len = 0;
else
full_len -= 254;
wl3501_get_from_wla(this, this->tx_buffer_head, &next,
sizeof(next));
if (!full_len)
wl3501_set_to_wla(this, this->tx_buffer_head, &zero,
sizeof(zero));
this->tx_buffer_head = next;
blk_cnt++;
/* if buffer is not enough */
if (!next && full_len) {
this->tx_buffer_head = ret;
ret = 0;
goto out;
}
}
this->tx_buffer_cnt -= blk_cnt;
out:
return ret;
}
/*
* Free an allocated Tx Buffer. ptr must be correct position.
*/
static void wl3501_free_tx_buffer(struct wl3501_card *this, u16 ptr)
{
/* check if all space is not free */
if (!this->tx_buffer_head)
this->tx_buffer_head = ptr;
else
wl3501_set_to_wla(this, this->tx_buffer_tail,
&ptr, sizeof(ptr));
while (ptr) {
u16 next;
this->tx_buffer_cnt++;
wl3501_get_from_wla(this, ptr, &next, sizeof(next));
this->tx_buffer_tail = ptr;
ptr = next;
}
}
static int wl3501_esbq_req_test(struct wl3501_card *this)
{
u8 tmp;
wl3501_get_from_wla(this, this->esbq_req_head + 3, &tmp, sizeof(tmp));
return tmp & 0x80;
}
static void wl3501_esbq_req(struct wl3501_card *this, u16 *ptr)
{
u16 tmp = 0;
wl3501_set_to_wla(this, this->esbq_req_head, ptr, 2);
wl3501_set_to_wla(this, this->esbq_req_head + 2, &tmp, sizeof(tmp));
this->esbq_req_head += 4;
if (this->esbq_req_head >= this->esbq_req_end)
this->esbq_req_head = this->esbq_req_start;
}
static int wl3501_esbq_exec(struct wl3501_card *this, void *sig, int sig_size)
{
int rc = -EIO;
if (wl3501_esbq_req_test(this)) {
u16 ptr = wl3501_get_tx_buffer(this, sig_size);
if (ptr) {
wl3501_set_to_wla(this, ptr, sig, sig_size);
wl3501_esbq_req(this, &ptr);
rc = 0;
}
}
return rc;
}
static int wl3501_get_mib_value(struct wl3501_card *this, u8 index,
void *bf, int size)
{
struct wl3501_get_req sig = {
.sig_id = WL3501_SIG_GET_REQ,
.mib_attrib = index,
};
unsigned long flags;
int rc = -EIO;
spin_lock_irqsave(&this->lock, flags);
if (wl3501_esbq_req_test(this)) {
u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
if (ptr) {
wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
wl3501_esbq_req(this, &ptr);
this->sig_get_confirm.mib_status = 255;
spin_unlock_irqrestore(&this->lock, flags);
rc = wait_event_interruptible(this->wait,
this->sig_get_confirm.mib_status != 255);
if (!rc)
memcpy(bf, this->sig_get_confirm.mib_value,
size);
goto out;
}
}
spin_unlock_irqrestore(&this->lock, flags);
out:
return rc;
}
static int wl3501_pwr_mgmt(struct wl3501_card *this, int suspend)
{
struct wl3501_pwr_mgmt_req sig = {
.sig_id = WL3501_SIG_PWR_MGMT_REQ,
.pwr_save = suspend,
.wake_up = !suspend,
.receive_dtims = 10,
};
unsigned long flags;
int rc = -EIO;
spin_lock_irqsave(&this->lock, flags);
if (wl3501_esbq_req_test(this)) {
u16 ptr = wl3501_get_tx_buffer(this, sizeof(sig));
if (ptr) {
wl3501_set_to_wla(this, ptr, &sig, sizeof(sig));
wl3501_esbq_req(this, &ptr);
this->sig_pwr_mgmt_confirm.status = 255;
spin_unlock_irqrestore(&this->lock, flags);
rc = wait_event_interruptible(this->wait,
this->sig_pwr_mgmt_confirm.status != 255);
printk(KERN_INFO "%s: %s status=%d\n", __func__,
suspend ? "suspend" : "resume",
this->sig_pwr_mgmt_confirm.status);
goto out;
}
}
spin_unlock_irqrestore(&this->lock, flags);
out:
return rc;
}
/**
* wl3501_send_pkt - Send a packet.
* @this - card
*
* Send a packet.
*
* data = Ethernet raw frame. (e.g. data[0] - data[5] is Dest MAC Addr,
* data[6] - data[11] is Src MAC Addr)
* Ref: IEEE 802.11
*/
static int wl3501_send_pkt(struct wl3501_card *this, u8 *data, u16 len)
{
u16 bf, sig_bf, next, tmplen, pktlen;
struct wl3501_md_req sig = {
.sig_id = WL3501_SIG_MD_REQ,
};
u8 *pdata = (char *)data;
int rc = -EIO;
if (wl3501_esbq_req_test(this)) {
sig_bf = wl3501_get_tx_buffer(this, sizeof(sig));
rc = -ENOMEM;
if (!sig_bf) /* No free buffer available */
goto out;
bf = wl3501_get_tx_buffer(this, len + 26 + 24);
if (!bf) {
/* No free buffer available */
wl3501_free_tx_buffer(this, sig_bf);
goto out;
}
rc = 0;
memcpy(&sig.daddr[0], pdata, 12);
pktlen = len - 12;
pdata += 12;
sig.data = bf;
if (((*pdata) * 256 + (*(pdata + 1))) > 1500) {
u8 addr4[ETH_ALEN] = {
[0] = 0xAA, [1] = 0xAA, [2] = 0x03, [4] = 0x00,
};
wl3501_set_to_wla(this, bf + 2 +
offsetof(struct wl3501_tx_hdr, addr4),
addr4, sizeof(addr4));
sig.size = pktlen + 24 + 4 + 6;
if (pktlen > (254 - sizeof(struct wl3501_tx_hdr))) {
tmplen = 254 - sizeof(struct wl3501_tx_hdr);
pktlen -= tmplen;
} else {
tmplen = pktlen;
pktlen = 0;
}
wl3501_set_to_wla(this,
bf + 2 + sizeof(struct wl3501_tx_hdr),
pdata, tmplen);
pdata += tmplen;
wl3501_get_from_wla(this, bf, &next, sizeof(next));
bf = next;
} else {
sig.size = pktlen + 24 + 4 - 2;
pdata += 2;
pktlen -= 2;
if (pktlen > (254 - sizeof(struct wl3501_tx_hdr) + 6)) {
tmplen = 254 - sizeof(struct wl3501_tx_hdr) + 6;
pktlen -= tmplen;
} else {
tmplen = pktlen;
pktlen = 0;
}
wl3501_set_to_wla(this, bf + 2 +
offsetof(struct wl3501_tx_hdr, addr4),
pdata, tmplen);
pdata += tmplen;
wl3501_get_from_wla(this, bf, &next, sizeof(next));
bf = next;
}
while (pktlen > 0) {
if (pktlen > 254) {
tmplen = 254;
pktlen -= 254;
} else {
tmplen = pktlen;
pktlen = 0;
}
wl3501_set_to_wla(this, bf + 2, pdata, tmplen);
pdata += tmplen;
wl3501_get_from_wla(this, bf, &next, sizeof(next));
bf = next;
}
wl3501_set_to_wla(this, sig_bf, &sig, sizeof(sig));
wl3501_esbq_req(this, &sig_bf);
}
out:
return rc;
}
static int wl3501_mgmt_resync(struct wl3501_card *this)
{
struct wl3501_resync_req sig = {
.sig_id = WL3501_SIG_RESYNC_REQ,
};
return wl3501_esbq_exec(this, &sig, sizeof(sig));
}
static inline int wl3501_fw_bss_type(struct wl3501_card *this)
{
return this->net_type == IW_MODE_INFRA ? WL3501_NET_TYPE_INFRA :
WL3501_NET_TYPE_ADHOC;
}
static inline int wl3501_fw_cap_info(struct wl3501_card *this)
{
return this->net_type == IW_MODE_INFRA ? WL3501_MGMT_CAPABILITY_ESS :
WL3501_MGMT_CAPABILITY_IBSS;
}
static int wl3501_mgmt_scan(struct wl3501_card *this, u16 chan_time)
{
struct wl3501_scan_req sig = {
.sig_id = WL3501_SIG_SCAN_REQ,
.scan_type = WL3501_SCAN_TYPE_ACTIVE,
.probe_delay = 0x10,
.min_chan_time = chan_time,
.max_chan_time = chan_time,
.bss_type = wl3501_fw_bss_type(this),
};
this->bss_cnt = this->join_sta_bss = 0;
return wl3501_esbq_exec(this, &sig, sizeof(sig));
}
static int wl3501_mgmt_join(struct wl3501_card *this, u16 stas)
{
struct wl3501_join_req sig = {
.sig_id = WL3501_SIG_JOIN_REQ,
.timeout = 10,
.ds_pset = {
.el = {
.id = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
.len = 1,
},
.chan = this->chan,
},
};
memcpy(&sig.beacon_period, &this->bss_set[stas].beacon_period, 72);
return wl3501_esbq_exec(this, &sig, sizeof(sig));
}
static int wl3501_mgmt_start(struct wl3501_card *this)
{
struct wl3501_start_req sig = {
.sig_id = WL3501_SIG_START_REQ,
.beacon_period = 400,
.dtim_period = 1,
.ds_pset = {
.el = {
.id = IW_MGMT_INFO_ELEMENT_DS_PARAMETER_SET,
.len = 1,
},
.chan = this->chan,
},
.bss_basic_rset = {
.el = {
.id = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
.len = 2,
},
.data_rate_labels = {
[0] = IW_MGMT_RATE_LABEL_MANDATORY |
IW_MGMT_RATE_LABEL_1MBIT,
[1] = IW_MGMT_RATE_LABEL_MANDATORY |
IW_MGMT_RATE_LABEL_2MBIT,
},
},
.operational_rset = {
.el = {
.id = IW_MGMT_INFO_ELEMENT_SUPPORTED_RATES,
.len = 2,
},
.data_rate_labels = {
[0] = IW_MGMT_RATE_LABEL_MANDATORY |
IW_MGMT_RATE_LABEL_1MBIT,
[1] = IW_MGMT_RATE_LABEL_MANDATORY |
IW_MGMT_RATE_LABEL_2MBIT,
},
},
.ibss_pset = {
.el = {
.id = IW_MGMT_INFO_ELEMENT_IBSS_PARAMETER_SET,
.len = 2,
},
.atim_window = 10,
},
.bss_type = wl3501_fw_bss_type(this),
.cap_info = wl3501_fw_cap_info(this),
};
iw_copy_mgmt_info_element(&sig.ssid.el, &this->essid.el);
iw_copy_mgmt_info_element(&this->keep_essid.el, &this->essid.el);
return wl3501_esbq_exec(this, &sig, sizeof(sig));
}
static void wl3501_mgmt_scan_confirm(struct wl3501_card *this, u16 addr)
{
u16 i = 0;
int matchflag = 0;
struct wl3501_scan_confirm sig;
dprintk(3, "entry");
wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
if (sig.status == WL3501_STATUS_SUCCESS) {
dprintk(3, "success");
if ((this->net_type == IW_MODE_INFRA &&
(sig.cap_info & WL3501_MGMT_CAPABILITY_ESS)) ||
(this->net_type == IW_MODE_ADHOC &&
(sig.cap_info & WL3501_MGMT_CAPABILITY_IBSS)) ||
this->net_type == IW_MODE_AUTO) {
if (!this->essid.el.len)
matchflag = 1;
else if (this->essid.el.len == 3 &&
!memcmp(this->essid.essid, "ANY", 3))
matchflag = 1;
else if (this->essid.el.len != sig.ssid.el.len)
matchflag = 0;
else if (memcmp(this->essid.essid, sig.ssid.essid,
this->essid.el.len))
matchflag = 0;
else
matchflag = 1;
if (matchflag) {
for (i = 0; i < this->bss_cnt; i++) {
if (!memcmp(this->bss_set[i].bssid,
sig.bssid, ETH_ALEN)) {
matchflag = 0;
break;
}
}
}
if (matchflag && (i < 20)) {
memcpy(&this->bss_set[i].beacon_period,
&sig.beacon_period, 73);
this->bss_cnt++;
this->rssi = sig.rssi;
}
}
} else if (sig.status == WL3501_STATUS_TIMEOUT) {
dprintk(3, "timeout");
this->join_sta_bss = 0;
for (i = this->join_sta_bss; i < this->bss_cnt; i++)
if (!wl3501_mgmt_join(this, i))
break;
this->join_sta_bss = i;
if (this->join_sta_bss == this->bss_cnt) {
if (this->net_type == IW_MODE_INFRA)
wl3501_mgmt_scan(this, 100);
else {
this->adhoc_times++;
if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
wl3501_mgmt_start(this);
else
wl3501_mgmt_scan(this, 100);
}
}
}
}
/**
* wl3501_block_interrupt - Mask interrupt from SUTRO
* @this - card
*
* Mask interrupt from SUTRO. (i.e. SUTRO cannot interrupt the HOST)
* Return: 1 if interrupt is originally enabled
*/
static int wl3501_block_interrupt(struct wl3501_card *this)
{
u8 old = inb(this->base_addr + WL3501_NIC_GCR);
u8 new = old & (~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC |
WL3501_GCR_ENECINT));
wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
return old & WL3501_GCR_ENECINT;
}
/**
* wl3501_unblock_interrupt - Enable interrupt from SUTRO
* @this - card
*
* Enable interrupt from SUTRO. (i.e. SUTRO can interrupt the HOST)
* Return: 1 if interrupt is originally enabled
*/
static int wl3501_unblock_interrupt(struct wl3501_card *this)
{
u8 old = inb(this->base_addr + WL3501_NIC_GCR);
u8 new = (old & ~(WL3501_GCR_ECINT | WL3501_GCR_INT2EC)) |
WL3501_GCR_ENECINT;
wl3501_outb(new, this->base_addr + WL3501_NIC_GCR);
return old & WL3501_GCR_ENECINT;
}
/**
* wl3501_receive - Receive data from Receive Queue.
*
* Receive data from Receive Queue.
*
* @this: card
* @bf: address of host
* @size: size of buffer.
*/
static u16 wl3501_receive(struct wl3501_card *this, u8 *bf, u16 size)
{
u16 next_addr, next_addr1;
u8 *data = bf + 12;
size -= 12;
wl3501_get_from_wla(this, this->start_seg + 2,
&next_addr, sizeof(next_addr));
if (size > WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr)) {
wl3501_get_from_wla(this,
this->start_seg +
sizeof(struct wl3501_rx_hdr), data,
WL3501_BLKSZ -
sizeof(struct wl3501_rx_hdr));
size -= WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
data += WL3501_BLKSZ - sizeof(struct wl3501_rx_hdr);
} else {
wl3501_get_from_wla(this,
this->start_seg +
sizeof(struct wl3501_rx_hdr),
data, size);
size = 0;
}
while (size > 0) {
if (size > WL3501_BLKSZ - 5) {
wl3501_get_from_wla(this, next_addr + 5, data,
WL3501_BLKSZ - 5);
size -= WL3501_BLKSZ - 5;
data += WL3501_BLKSZ - 5;
wl3501_get_from_wla(this, next_addr + 2, &next_addr1,
sizeof(next_addr1));
next_addr = next_addr1;
} else {
wl3501_get_from_wla(this, next_addr + 5, data, size);
size = 0;
}
}
return 0;
}
static void wl3501_esbq_req_free(struct wl3501_card *this)
{
u8 tmp;
u16 addr;
if (this->esbq_req_head == this->esbq_req_tail)
goto out;
wl3501_get_from_wla(this, this->esbq_req_tail + 3, &tmp, sizeof(tmp));
if (!(tmp & 0x80))
goto out;
wl3501_get_from_wla(this, this->esbq_req_tail, &addr, sizeof(addr));
wl3501_free_tx_buffer(this, addr);
this->esbq_req_tail += 4;
if (this->esbq_req_tail >= this->esbq_req_end)
this->esbq_req_tail = this->esbq_req_start;
out:
return;
}
static int wl3501_esbq_confirm(struct wl3501_card *this)
{
u8 tmp;
wl3501_get_from_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
return tmp & 0x80;
}
static void wl3501_online(struct net_device *dev)
{
struct wl3501_card *this = netdev_priv(dev);
printk(KERN_INFO "%s: Wireless LAN online. BSSID: %pM\n",
dev->name, this->bssid);
netif_wake_queue(dev);
}
static void wl3501_esbq_confirm_done(struct wl3501_card *this)
{
u8 tmp = 0;
wl3501_set_to_wla(this, this->esbq_confirm + 3, &tmp, sizeof(tmp));
this->esbq_confirm += 4;
if (this->esbq_confirm >= this->esbq_confirm_end)
this->esbq_confirm = this->esbq_confirm_start;
}
static int wl3501_mgmt_auth(struct wl3501_card *this)
{
struct wl3501_auth_req sig = {
.sig_id = WL3501_SIG_AUTH_REQ,
.type = WL3501_SYS_TYPE_OPEN,
.timeout = 1000,
};
dprintk(3, "entry");
memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
return wl3501_esbq_exec(this, &sig, sizeof(sig));
}
static int wl3501_mgmt_association(struct wl3501_card *this)
{
struct wl3501_assoc_req sig = {
.sig_id = WL3501_SIG_ASSOC_REQ,
.timeout = 1000,
.listen_interval = 5,
.cap_info = this->cap_info,
};
dprintk(3, "entry");
memcpy(sig.mac_addr, this->bssid, ETH_ALEN);
return wl3501_esbq_exec(this, &sig, sizeof(sig));
}
static void wl3501_mgmt_join_confirm(struct net_device *dev, u16 addr)
{
struct wl3501_card *this = netdev_priv(dev);
struct wl3501_join_confirm sig;
dprintk(3, "entry");
wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
if (sig.status == WL3501_STATUS_SUCCESS) {
if (this->net_type == IW_MODE_INFRA) {
if (this->join_sta_bss < this->bss_cnt) {
const int i = this->join_sta_bss;
memcpy(this->bssid,
this->bss_set[i].bssid, ETH_ALEN);
this->chan = this->bss_set[i].ds_pset.chan;
iw_copy_mgmt_info_element(&this->keep_essid.el,
&this->bss_set[i].ssid.el);
wl3501_mgmt_auth(this);
}
} else {
const int i = this->join_sta_bss;
memcpy(&this->bssid, &this->bss_set[i].bssid, ETH_ALEN);
this->chan = this->bss_set[i].ds_pset.chan;
iw_copy_mgmt_info_element(&this->keep_essid.el,
&this->bss_set[i].ssid.el);
wl3501_online(dev);
}
} else {
int i;
this->join_sta_bss++;
for (i = this->join_sta_bss; i < this->bss_cnt; i++)
if (!wl3501_mgmt_join(this, i))
break;
this->join_sta_bss = i;
if (this->join_sta_bss == this->bss_cnt) {
if (this->net_type == IW_MODE_INFRA)
wl3501_mgmt_scan(this, 100);
else {
this->adhoc_times++;
if (this->adhoc_times > WL3501_MAX_ADHOC_TRIES)
wl3501_mgmt_start(this);
else
wl3501_mgmt_scan(this, 100);
}
}
}
}
static inline void wl3501_alarm_interrupt(struct net_device *dev,
struct wl3501_card *this)
{
if (this->net_type == IW_MODE_INFRA) {
printk(KERN_INFO "Wireless LAN offline\n");
netif_stop_queue(dev);
wl3501_mgmt_resync(this);
}
}
static inline void wl3501_md_confirm_interrupt(struct net_device *dev,
struct wl3501_card *this,
u16 addr)
{
struct wl3501_md_confirm sig;
dprintk(3, "entry");
wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
wl3501_free_tx_buffer(this, sig.data);
if (netif_queue_stopped(dev))
netif_wake_queue(dev);
}
static inline void wl3501_md_ind_interrupt(struct net_device *dev,
struct wl3501_card *this, u16 addr)
{
struct wl3501_md_ind sig;
struct sk_buff *skb;
u8 rssi, addr4[ETH_ALEN];
u16 pkt_len;
wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
this->start_seg = sig.data;
wl3501_get_from_wla(this,
sig.data + offsetof(struct wl3501_rx_hdr, rssi),
&rssi, sizeof(rssi));
this->rssi = rssi <= 63 ? (rssi * 100) / 64 : 255;
wl3501_get_from_wla(this,
sig.data +
offsetof(struct wl3501_rx_hdr, addr4),
&addr4, sizeof(addr4));
if (!(addr4[0] == 0xAA && addr4[1] == 0xAA &&
addr4[2] == 0x03 && addr4[4] == 0x00)) {
printk(KERN_INFO "Insupported packet type!\n");
return;
}
pkt_len = sig.size + 12 - 24 - 4 - 6;
skb = dev_alloc_skb(pkt_len + 5);
if (!skb) {
printk(KERN_WARNING "%s: Can't alloc a sk_buff of size %d.\n",
dev->name, pkt_len);
this->stats.rx_dropped++;
} else {
skb->dev = dev;
skb_reserve(skb, 2); /* IP headers on 16 bytes boundaries */
skb_copy_to_linear_data(skb, (unsigned char *)&sig.daddr, 12);
wl3501_receive(this, skb->data, pkt_len);
skb_put(skb, pkt_len);
skb->protocol = eth_type_trans(skb, dev);
this->stats.rx_packets++;
this->stats.rx_bytes += skb->len;
netif_rx(skb);
}
}
static inline void wl3501_get_confirm_interrupt(struct wl3501_card *this,
u16 addr, void *sig, int size)
{
dprintk(3, "entry");
wl3501_get_from_wla(this, addr, &this->sig_get_confirm,
sizeof(this->sig_get_confirm));
wake_up(&this->wait);
}
static inline void wl3501_start_confirm_interrupt(struct net_device *dev,
struct wl3501_card *this,
u16 addr)
{
struct wl3501_start_confirm sig;
dprintk(3, "entry");
wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
if (sig.status == WL3501_STATUS_SUCCESS)
netif_wake_queue(dev);
}
static inline void wl3501_assoc_confirm_interrupt(struct net_device *dev,
u16 addr)
{
struct wl3501_card *this = netdev_priv(dev);
struct wl3501_assoc_confirm sig;
dprintk(3, "entry");
wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
if (sig.status == WL3501_STATUS_SUCCESS)
wl3501_online(dev);
}
static inline void wl3501_auth_confirm_interrupt(struct wl3501_card *this,
u16 addr)
{
struct wl3501_auth_confirm sig;
dprintk(3, "entry");
wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
if (sig.status == WL3501_STATUS_SUCCESS)
wl3501_mgmt_association(this);
else
wl3501_mgmt_resync(this);
}
static inline void wl3501_rx_interrupt(struct net_device *dev)
{
int morepkts;
u16 addr;
u8 sig_id;
struct wl3501_card *this = netdev_priv(dev);
dprintk(3, "entry");
loop:
morepkts = 0;
if (!wl3501_esbq_confirm(this))
goto free;
wl3501_get_from_wla(this, this->esbq_confirm, &addr, sizeof(addr));
wl3501_get_from_wla(this, addr + 2, &sig_id, sizeof(sig_id));
switch (sig_id) {
case WL3501_SIG_DEAUTH_IND:
case WL3501_SIG_DISASSOC_IND:
case WL3501_SIG_ALARM:
wl3501_alarm_interrupt(dev, this);
break;
case WL3501_SIG_MD_CONFIRM:
wl3501_md_confirm_interrupt(dev, this, addr);
break;
case WL3501_SIG_MD_IND:
wl3501_md_ind_interrupt(dev, this, addr);
break;
case WL3501_SIG_GET_CONFIRM:
wl3501_get_confirm_interrupt(this, addr,
&this->sig_get_confirm,
sizeof(this->sig_get_confirm));
break;
case WL3501_SIG_PWR_MGMT_CONFIRM:
wl3501_get_confirm_interrupt(this, addr,
&this->sig_pwr_mgmt_confirm,
sizeof(this->sig_pwr_mgmt_confirm));
break;
case WL3501_SIG_START_CONFIRM:
wl3501_start_confirm_interrupt(dev, this, addr);
break;
case WL3501_SIG_SCAN_CONFIRM:
wl3501_mgmt_scan_confirm(this, addr);
break;
case WL3501_SIG_JOIN_CONFIRM:
wl3501_mgmt_join_confirm(dev, addr);
break;
case WL3501_SIG_ASSOC_CONFIRM:
wl3501_assoc_confirm_interrupt(dev, addr);
break;
case WL3501_SIG_AUTH_CONFIRM:
wl3501_auth_confirm_interrupt(this, addr);
break;
case WL3501_SIG_RESYNC_CONFIRM:
wl3501_mgmt_resync(this); /* FIXME: should be resync_confirm */
break;
}
wl3501_esbq_confirm_done(this);
morepkts = 1;
/* free request if necessary */
free:
wl3501_esbq_req_free(this);
if (morepkts)
goto loop;
}
static inline void wl3501_ack_interrupt(struct wl3501_card *this)
{
wl3501_outb(WL3501_GCR_ECINT, this->base_addr + WL3501_NIC_GCR);
}
/**
* wl3501_interrupt - Hardware interrupt from card.
* @irq - Interrupt number
* @dev_id - net_device
*
* We must acknowledge the interrupt as soon as possible, and block the
* interrupt from the same card immediately to prevent re-entry.
*
* Before accessing the Control_Status_Block, we must lock SUTRO first.
* On the other hand, to prevent SUTRO from malfunctioning, we must
* unlock the SUTRO as soon as possible.
*/
static irqreturn_t wl3501_interrupt(int irq, void *dev_id)
{
struct net_device *dev = dev_id;
struct wl3501_card *this;
this = netdev_priv(dev);
spin_lock(&this->lock);
wl3501_ack_interrupt(this);
wl3501_block_interrupt(this);
wl3501_rx_interrupt(dev);
wl3501_unblock_interrupt(this);
spin_unlock(&this->lock);
return IRQ_HANDLED;
}
static int wl3501_reset_board(struct wl3501_card *this)
{
u8 tmp = 0;
int i, rc = 0;
/* Coreset */
wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
wl3501_outb_p(WL3501_GCR_CORESET, this->base_addr + WL3501_NIC_GCR);
/* Reset SRAM 0x480 to zero */
wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
/* Start up */
wl3501_outb_p(0, this->base_addr + WL3501_NIC_GCR);
WL3501_NOPLOOP(1024 * 50);
wl3501_unblock_interrupt(this); /* acme: was commented */
/* Polling Self_Test_Status */
for (i = 0; i < 10000; i++) {
wl3501_get_from_wla(this, 0x480, &tmp, sizeof(tmp));
if (tmp == 'W') {
/* firmware complete all test successfully */
tmp = 'A';
wl3501_set_to_wla(this, 0x480, &tmp, sizeof(tmp));
goto out;
}
WL3501_NOPLOOP(10);
}
printk(KERN_WARNING "%s: failed to reset the board!\n", __func__);
rc = -ENODEV;
out:
return rc;
}
static int wl3501_init_firmware(struct wl3501_card *this)
{
u16 ptr, next;
int rc = wl3501_reset_board(this);
if (rc)
goto fail;
this->card_name[0] = '\0';
wl3501_get_from_wla(this, 0x1a00,
this->card_name, sizeof(this->card_name));
this->card_name[sizeof(this->card_name) - 1] = '\0';
this->firmware_date[0] = '\0';
wl3501_get_from_wla(this, 0x1a40,
this->firmware_date, sizeof(this->firmware_date));
this->firmware_date[sizeof(this->firmware_date) - 1] = '\0';
/* Switch to SRAM Page 0 */
wl3501_switch_page(this, WL3501_BSS_SPAGE0);
/* Read parameter from card */
wl3501_get_from_wla(this, 0x482, &this->esbq_req_start, 2);
wl3501_get_from_wla(this, 0x486, &this->esbq_req_end, 2);
wl3501_get_from_wla(this, 0x488, &this->esbq_confirm_start, 2);
wl3501_get_from_wla(this, 0x48c, &this->esbq_confirm_end, 2);
wl3501_get_from_wla(this, 0x48e, &this->tx_buffer_head, 2);
wl3501_get_from_wla(this, 0x492, &this->tx_buffer_size, 2);
this->esbq_req_tail = this->esbq_req_head = this->esbq_req_start;
this->esbq_req_end += this->esbq_req_start;
this->esbq_confirm = this->esbq_confirm_start;
this->esbq_confirm_end += this->esbq_confirm_start;
/* Initial Tx Buffer */
this->tx_buffer_cnt = 1;
ptr = this->tx_buffer_head;
next = ptr + WL3501_BLKSZ;
while ((next - this->tx_buffer_head) < this->tx_buffer_size) {
this->tx_buffer_cnt++;
wl3501_set_to_wla(this, ptr, &next, sizeof(next));
ptr = next;
next = ptr + WL3501_BLKSZ;
}
rc = 0;
next = 0;
wl3501_set_to_wla(this, ptr, &next, sizeof(next));
this->tx_buffer_tail = ptr;
out:
return rc;
fail:
printk(KERN_WARNING "%s: failed!\n", __func__);
goto out;
}
static int wl3501_close(struct net_device *dev)
{
struct wl3501_card *this = netdev_priv(dev);
int rc = -ENODEV;
unsigned long flags;
struct pcmcia_device *link;
link = this->p_dev;
spin_lock_irqsave(&this->lock, flags);
link->open--;
/* Stop wl3501_hard_start_xmit() from now on */
netif_stop_queue(dev);
wl3501_ack_interrupt(this);
/* Mask interrupts from the SUTRO */
wl3501_block_interrupt(this);
rc = 0;
printk(KERN_INFO "%s: WL3501 closed\n", dev->name);
spin_unlock_irqrestore(&this->lock, flags);
return rc;
}
/**
* wl3501_reset - Reset the SUTRO.
* @dev - network device
*
* It is almost the same as wl3501_open(). In fact, we may just wl3501_close()
* and wl3501_open() again, but I wouldn't like to free_irq() when the driver
* is running. It seems to be dangerous.
*/
static int wl3501_reset(struct net_device *dev)
{
struct wl3501_card *this = netdev_priv(dev);
int rc = -ENODEV;
wl3501_block_interrupt(this);
if (wl3501_init_firmware(this)) {
printk(KERN_WARNING "%s: Can't initialize Firmware!\n",
dev->name);
/* Free IRQ, and mark IRQ as unused */
free_irq(dev->irq, dev);
goto out;
}
/*
* Queue has to be started only when the Card is Started
*/
netif_stop_queue(dev);
this->adhoc_times = 0;
wl3501_ack_interrupt(this);
wl3501_unblock_interrupt(this);
wl3501_mgmt_scan(this, 100);
dprintk(1, "%s: device reset", dev->name);
rc = 0;
out:
return rc;
}
static void wl3501_tx_timeout(struct net_device *dev)
{
struct wl3501_card *this = netdev_priv(dev);
struct net_device_stats *stats = &this->stats;
unsigned long flags;
int rc;
stats->tx_errors++;
spin_lock_irqsave(&this->lock, flags);
rc = wl3501_reset(dev);
spin_unlock_irqrestore(&this->lock, flags);
if (rc)
printk(KERN_ERR "%s: Error %d resetting card on Tx timeout!\n",
dev->name, rc);
else {
dev->trans_start = jiffies;
netif_wake_queue(dev);
}
}
/*
* Return : 0 - OK
* 1 - Could not transmit (dev_queue_xmit will queue it)
* and try to sent it later
*/
static int wl3501_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
int enabled, rc;
struct wl3501_card *this = netdev_priv(dev);
unsigned long flags;
spin_lock_irqsave(&this->lock, flags);
enabled = wl3501_block_interrupt(this);
dev->trans_start = jiffies;
rc = wl3501_send_pkt(this, skb->data, skb->len);
if (enabled)
wl3501_unblock_interrupt(this);
if (rc) {
++this->stats.tx_dropped;
netif_stop_queue(dev);
} else {
++this->stats.tx_packets;
this->stats.tx_bytes += skb->len;
kfree_skb(skb);
if (this->tx_buffer_cnt < 2)
netif_stop_queue(dev);
}
spin_unlock_irqrestore(&this->lock, flags);
return rc;
}
static int wl3501_open(struct net_device *dev)
{
int rc = -ENODEV;
struct wl3501_card *this = netdev_priv(dev);
unsigned long flags;
struct pcmcia_device *link;
link = this->p_dev;
spin_lock_irqsave(&this->lock, flags);
if (!pcmcia_dev_present(link))
goto out;
netif_device_attach(dev);
link->open++;
/* Initial WL3501 firmware */
dprintk(1, "%s: Initialize WL3501 firmware...", dev->name);
if (wl3501_init_firmware(this))
goto fail;
/* Initial device variables */
this->adhoc_times = 0;
/* Acknowledge Interrupt, for cleaning last state */
wl3501_ack_interrupt(this);
/* Enable interrupt from card after all */
wl3501_unblock_interrupt(this);
wl3501_mgmt_scan(this, 100);
rc = 0;
dprintk(1, "%s: WL3501 opened", dev->name);
printk(KERN_INFO "%s: Card Name: %s\n"
"%s: Firmware Date: %s\n",
dev->name, this->card_name,
dev->name, this->firmware_date);
out:
spin_unlock_irqrestore(&this->lock, flags);
return rc;
fail:
printk(KERN_WARNING "%s: Can't initialize firmware!\n", dev->name);
goto out;
}
static struct net_device_stats *wl3501_get_stats(struct net_device *dev)
{
struct wl3501_card *this = netdev_priv(dev);
return &this->stats;
}
static struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev)
{
struct wl3501_card *this = netdev_priv(dev);
struct iw_statistics *wstats = &this->wstats;
u32 value; /* size checked: it is u32 */
memset(wstats, 0, sizeof(*wstats));
wstats->status = netif_running(dev);
if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_ICV_ERROR_COUNT,
&value, sizeof(value)))
wstats->discard.code += value;
if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_UNDECRYPTABLE_COUNT,
&value, sizeof(value)))
wstats->discard.code += value;
if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_EXCLUDED_COUNT,
&value, sizeof(value)))
wstats->discard.code += value;
if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RETRY_COUNT,
&value, sizeof(value)))
wstats->discard.retries = value;
if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FAILED_COUNT,
&value, sizeof(value)))
wstats->discard.misc += value;
if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_FAILURE_COUNT,
&value, sizeof(value)))
wstats->discard.misc += value;
if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_ACK_FAILURE_COUNT,
&value, sizeof(value)))
wstats->discard.misc += value;
if (!wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAME_DUPLICATE_COUNT,
&value, sizeof(value)))
wstats->discard.misc += value;
return wstats;
}
static void wl3501_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
{
strlcpy(info->driver, wl3501_dev_info, sizeof(info->driver));
}
static const struct ethtool_ops ops = {
.get_drvinfo = wl3501_get_drvinfo
};
/**
* wl3501_detach - deletes a driver "instance"
* @link - FILL_IN
*
* This deletes a driver "instance". The device is de-registered with Card
* Services. If it has been released, all local data structures are freed.
* Otherwise, the structures will be freed when the device is released.
*/
static void wl3501_detach(struct pcmcia_device *link)
{
struct net_device *dev = link->priv;
/* If the device is currently configured and active, we won't actually
* delete it yet. Instead, it is marked so that when the release()
* function is called, that will trigger a proper detach(). */
while (link->open > 0)
wl3501_close(dev);
netif_device_detach(dev);
wl3501_release(link);
if (link->priv)
free_netdev(link->priv);
return;
}
static int wl3501_get_name(struct net_device *dev, struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
strlcpy(wrqu->name, "IEEE 802.11-DS", sizeof(wrqu->name));
return 0;
}
static int wl3501_set_freq(struct net_device *dev, struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
struct wl3501_card *this = netdev_priv(dev);
int channel = wrqu->freq.m;
int rc = -EINVAL;
if (iw_valid_channel(this->reg_domain, channel)) {
this->chan = channel;
rc = wl3501_reset(dev);
}
return rc;
}
static int wl3501_get_freq(struct net_device *dev, struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
struct wl3501_card *this = netdev_priv(dev);
wrqu->freq.m = wl3501_chan2freq[this->chan - 1] * 100000;
wrqu->freq.e = 1;
return 0;
}
static int wl3501_set_mode(struct net_device *dev, struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
int rc = -EINVAL;
if (wrqu->mode == IW_MODE_INFRA ||
wrqu->mode == IW_MODE_ADHOC ||
wrqu->mode == IW_MODE_AUTO) {
struct wl3501_card *this = netdev_priv(dev);
this->net_type = wrqu->mode;
rc = wl3501_reset(dev);
}
return rc;
}
static int wl3501_get_mode(struct net_device *dev, struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
struct wl3501_card *this = netdev_priv(dev);
wrqu->mode = this->net_type;
return 0;
}
static int wl3501_get_sens(struct net_device *dev, struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
struct wl3501_card *this = netdev_priv(dev);
wrqu->sens.value = this->rssi;
wrqu->sens.disabled = !wrqu->sens.value;
wrqu->sens.fixed = 1;
return 0;
}
static int wl3501_get_range(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
struct iw_range *range = (struct iw_range *)extra;
/* Set the length (very important for backward compatibility) */
wrqu->data.length = sizeof(*range);
/* Set all the info we don't care or don't know about to zero */
memset(range, 0, sizeof(*range));
/* Set the Wireless Extension versions */
range->we_version_compiled = WIRELESS_EXT;
range->we_version_source = 1;
range->throughput = 2 * 1000 * 1000; /* ~2 Mb/s */
/* FIXME: study the code to fill in more fields... */
return 0;
}
static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
struct wl3501_card *this = netdev_priv(dev);
static const u8 bcast[ETH_ALEN] = { 255, 255, 255, 255, 255, 255 };
int rc = -EINVAL;
/* FIXME: we support other ARPHRDs...*/
if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
goto out;
if (!memcmp(bcast, wrqu->ap_addr.sa_data, ETH_ALEN)) {
/* FIXME: rescan? */
} else
memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);
/* FIXME: rescan? deassoc & scan? */
rc = 0;
out:
return rc;
}
static int wl3501_get_wap(struct net_device *dev, struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
struct wl3501_card *this = netdev_priv(dev);
wrqu->ap_addr.sa_family = ARPHRD_ETHER;
memcpy(wrqu->ap_addr.sa_data, this->bssid, ETH_ALEN);
return 0;
}
static int wl3501_set_scan(struct net_device *dev, struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
/*
* FIXME: trigger scanning with a reset, yes, I'm lazy
*/
return wl3501_reset(dev);
}
static int wl3501_get_scan(struct net_device *dev, struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
struct wl3501_card *this = netdev_priv(dev);
int i;
char *current_ev = extra;
struct iw_event iwe;
for (i = 0; i < this->bss_cnt; ++i) {
iwe.cmd = SIOCGIWAP;
iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
memcpy(iwe.u.ap_addr.sa_data, this->bss_set[i].bssid, ETH_ALEN);
current_ev = iwe_stream_add_event(info, current_ev,
extra + IW_SCAN_MAX_DATA,
&iwe, IW_EV_ADDR_LEN);
iwe.cmd = SIOCGIWESSID;
iwe.u.data.flags = 1;
iwe.u.data.length = this->bss_set[i].ssid.el.len;
current_ev = iwe_stream_add_point(info, current_ev,
extra + IW_SCAN_MAX_DATA,
&iwe,
this->bss_set[i].ssid.essid);
iwe.cmd = SIOCGIWMODE;
iwe.u.mode = this->bss_set[i].bss_type;
current_ev = iwe_stream_add_event(info, current_ev,
extra + IW_SCAN_MAX_DATA,
&iwe, IW_EV_UINT_LEN);
iwe.cmd = SIOCGIWFREQ;
iwe.u.freq.m = this->bss_set[i].ds_pset.chan;
iwe.u.freq.e = 0;
current_ev = iwe_stream_add_event(info, current_ev,
extra + IW_SCAN_MAX_DATA,
&iwe, IW_EV_FREQ_LEN);
iwe.cmd = SIOCGIWENCODE;
if (this->bss_set[i].cap_info & WL3501_MGMT_CAPABILITY_PRIVACY)
iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
else
iwe.u.data.flags = IW_ENCODE_DISABLED;
iwe.u.data.length = 0;
current_ev = iwe_stream_add_point(info, current_ev,
extra + IW_SCAN_MAX_DATA,
&iwe, NULL);
}
/* Length of data */
wrqu->data.length = (current_ev - extra);
wrqu->data.flags = 0; /* FIXME: set properly these flags */
return 0;
}
static int wl3501_set_essid(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
struct wl3501_card *this = netdev_priv(dev);
if (wrqu->data.flags) {
iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
&this->essid.el,
extra, wrqu->data.length);
} else { /* We accept any ESSID */
iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID,
&this->essid.el, "ANY", 3);
}
return wl3501_reset(dev);
}
static int wl3501_get_essid(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
struct wl3501_card *this = netdev_priv(dev);
unsigned long flags;
spin_lock_irqsave(&this->lock, flags);
wrqu->essid.flags = 1;
wrqu->essid.length = this->essid.el.len;
memcpy(extra, this->essid.essid, this->essid.el.len);
spin_unlock_irqrestore(&this->lock, flags);
return 0;
}
static int wl3501_set_nick(struct net_device *dev, struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
struct wl3501_card *this = netdev_priv(dev);
if (wrqu->data.length > sizeof(this->nick))
return -E2BIG;
strlcpy(this->nick, extra, wrqu->data.length);
return 0;
}
static int wl3501_get_nick(struct net_device *dev, struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
struct wl3501_card *this = netdev_priv(dev);
strlcpy(extra, this->nick, 32);
wrqu->data.length = strlen(extra);
return 0;
}
static int wl3501_get_rate(struct net_device *dev, struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
/*
* FIXME: have to see from where to get this info, perhaps this card
* works at 1 Mbit/s too... for now leave at 2 Mbit/s that is the most
* common with the Planet Access Points. -acme
*/
wrqu->bitrate.value = 2000000;
wrqu->bitrate.fixed = 1;
return 0;
}
static int wl3501_get_rts_threshold(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
u16 threshold; /* size checked: it is u16 */
struct wl3501_card *this = netdev_priv(dev);
int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_RTS_THRESHOLD,
&threshold, sizeof(threshold));
if (!rc) {
wrqu->rts.value = threshold;
wrqu->rts.disabled = threshold >= 2347;
wrqu->rts.fixed = 1;
}
return rc;
}
static int wl3501_get_frag_threshold(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
u16 threshold; /* size checked: it is u16 */
struct wl3501_card *this = netdev_priv(dev);
int rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_FRAG_THRESHOLD,
&threshold, sizeof(threshold));
if (!rc) {
wrqu->frag.value = threshold;
wrqu->frag.disabled = threshold >= 2346;
wrqu->frag.fixed = 1;
}
return rc;
}
static int wl3501_get_txpow(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
u16 txpow;
struct wl3501_card *this = netdev_priv(dev);
int rc = wl3501_get_mib_value(this,
WL3501_MIB_ATTR_CURRENT_TX_PWR_LEVEL,
&txpow, sizeof(txpow));
if (!rc) {
wrqu->txpower.value = txpow;
wrqu->txpower.disabled = 0;
/*
* From the MIB values I think this can be configurable,
* as it lists several tx power levels -acme
*/
wrqu->txpower.fixed = 0;
wrqu->txpower.flags = IW_TXPOW_MWATT;
}
return rc;
}
static int wl3501_get_retry(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
u8 retry; /* size checked: it is u8 */
struct wl3501_card *this = netdev_priv(dev);
int rc = wl3501_get_mib_value(this,
WL3501_MIB_ATTR_LONG_RETRY_LIMIT,
&retry, sizeof(retry));
if (rc)
goto out;
if (wrqu->retry.flags & IW_RETRY_LONG) {
wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
goto set_value;
}
rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_SHORT_RETRY_LIMIT,
&retry, sizeof(retry));
if (rc)
goto out;
wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_SHORT;
set_value:
wrqu->retry.value = retry;
wrqu->retry.disabled = 0;
out:
return rc;
}
static int wl3501_get_encode(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
u8 implemented, restricted, keys[100], len_keys, tocopy;
struct wl3501_card *this = netdev_priv(dev);
int rc = wl3501_get_mib_value(this,
WL3501_MIB_ATTR_PRIV_OPT_IMPLEMENTED,
&implemented, sizeof(implemented));
if (rc)
goto out;
if (!implemented) {
wrqu->encoding.flags = IW_ENCODE_DISABLED;
goto out;
}
rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_EXCLUDE_UNENCRYPTED,
&restricted, sizeof(restricted));
if (rc)
goto out;
wrqu->encoding.flags = restricted ? IW_ENCODE_RESTRICTED :
IW_ENCODE_OPEN;
rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS_LEN,
&len_keys, sizeof(len_keys));
if (rc)
goto out;
rc = wl3501_get_mib_value(this, WL3501_MIB_ATTR_WEP_KEY_MAPPINGS,
keys, len_keys);
if (rc)
goto out;
tocopy = min_t(u8, len_keys, wrqu->encoding.length);
tocopy = min_t(u8, tocopy, 100);
wrqu->encoding.length = tocopy;
memcpy(extra, keys, tocopy);
out:
return rc;
}
static int wl3501_get_power(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
u8 pwr_state;
struct wl3501_card *this = netdev_priv(dev);
int rc = wl3501_get_mib_value(this,
WL3501_MIB_ATTR_CURRENT_PWR_STATE,
&pwr_state, sizeof(pwr_state));
if (rc)
goto out;
wrqu->power.disabled = !pwr_state;
wrqu->power.flags = IW_POWER_ON;
out:
return rc;
}
static const iw_handler wl3501_handler[] = {
[SIOCGIWNAME - SIOCIWFIRST] = wl3501_get_name,
[SIOCSIWFREQ - SIOCIWFIRST] = wl3501_set_freq,
[SIOCGIWFREQ - SIOCIWFIRST] = wl3501_get_freq,
[SIOCSIWMODE - SIOCIWFIRST] = wl3501_set_mode,
[SIOCGIWMODE - SIOCIWFIRST] = wl3501_get_mode,
[SIOCGIWSENS - SIOCIWFIRST] = wl3501_get_sens,
[SIOCGIWRANGE - SIOCIWFIRST] = wl3501_get_range,
[SIOCSIWSPY - SIOCIWFIRST] = iw_handler_set_spy,
[SIOCGIWSPY - SIOCIWFIRST] = iw_handler_get_spy,
[SIOCSIWTHRSPY - SIOCIWFIRST] = iw_handler_set_thrspy,
[SIOCGIWTHRSPY - SIOCIWFIRST] = iw_handler_get_thrspy,
[SIOCSIWAP - SIOCIWFIRST] = wl3501_set_wap,
[SIOCGIWAP - SIOCIWFIRST] = wl3501_get_wap,
[SIOCSIWSCAN - SIOCIWFIRST] = wl3501_set_scan,
[SIOCGIWSCAN - SIOCIWFIRST] = wl3501_get_scan,
[SIOCSIWESSID - SIOCIWFIRST] = wl3501_set_essid,
[SIOCGIWESSID - SIOCIWFIRST] = wl3501_get_essid,
[SIOCSIWNICKN - SIOCIWFIRST] = wl3501_set_nick,
[SIOCGIWNICKN - SIOCIWFIRST] = wl3501_get_nick,
[SIOCGIWRATE - SIOCIWFIRST] = wl3501_get_rate,
[SIOCGIWRTS - SIOCIWFIRST] = wl3501_get_rts_threshold,
[SIOCGIWFRAG - SIOCIWFIRST] = wl3501_get_frag_threshold,
[SIOCGIWTXPOW - SIOCIWFIRST] = wl3501_get_txpow,
[SIOCGIWRETRY - SIOCIWFIRST] = wl3501_get_retry,
[SIOCGIWENCODE - SIOCIWFIRST] = wl3501_get_encode,
[SIOCGIWPOWER - SIOCIWFIRST] = wl3501_get_power,
};
static const struct iw_handler_def wl3501_handler_def = {
.num_standard = ARRAY_SIZE(wl3501_handler),
.standard = (iw_handler *)wl3501_handler,
.get_wireless_stats = wl3501_get_wireless_stats,
};
/**
* wl3501_attach - creates an "instance" of the driver
*
* Creates an "instance" of the driver, allocating local data structures for
* one device. The device is registered with Card Services.
*
* The dev_link structure is initialized, but we don't actually configure the
* card at this point -- we wait until we receive a card insertion event.
*/
static int wl3501_probe(struct pcmcia_device *p_dev)
{
struct net_device *dev;
struct wl3501_card *this;
/* The io structure describes IO port mapping */
p_dev->io.NumPorts1 = 16;
p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
p_dev->io.IOAddrLines = 5;
/* Interrupt setup */
p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING | IRQ_HANDLE_PRESENT;
p_dev->irq.IRQInfo1 = IRQ_LEVEL_ID;
p_dev->irq.Handler = wl3501_interrupt;
/* General socket configuration */
p_dev->conf.Attributes = CONF_ENABLE_IRQ;
p_dev->conf.IntType = INT_MEMORY_AND_IO;
p_dev->conf.ConfigIndex = 1;
dev = alloc_etherdev(sizeof(struct wl3501_card));
if (!dev)
goto out_link;
dev->open = wl3501_open;
dev->stop = wl3501_close;
dev->hard_start_xmit = wl3501_hard_start_xmit;
dev->tx_timeout = wl3501_tx_timeout;
dev->watchdog_timeo = 5 * HZ;
dev->get_stats = wl3501_get_stats;
this = netdev_priv(dev);
this->wireless_data.spy_data = &this->spy_data;
this->p_dev = p_dev;
dev->wireless_data = &this->wireless_data;
dev->wireless_handlers = (struct iw_handler_def *)&wl3501_handler_def;
SET_ETHTOOL_OPS(dev, &ops);
netif_stop_queue(dev);
p_dev->priv = p_dev->irq.Instance = dev;
return wl3501_config(p_dev);
out_link:
return -ENOMEM;
}
#define CS_CHECK(fn, ret) \
do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
/**
* wl3501_config - configure the PCMCIA socket and make eth device available
* @link - FILL_IN
*
* wl3501_config() is scheduled to run after a CARD_INSERTION event is
* received, to configure the PCMCIA socket, and to make the ethernet device
* available to the system.
*/
static int wl3501_config(struct pcmcia_device *link)
{
struct net_device *dev = link->priv;
int i = 0, j, last_fn, last_ret;
struct wl3501_card *this;
/* Try allocating IO ports. This tries a few fixed addresses. If you
* want, you can also read the card's config table to pick addresses --
* see the serial driver for an example. */
for (j = 0x280; j < 0x400; j += 0x20) {
/* The '^0x300' is so that we probe 0x300-0x3ff first, then
* 0x200-0x2ff, and so on, because this seems safer */
link->io.BasePort1 = j;
link->io.BasePort2 = link->io.BasePort1 + 0x10;
i = pcmcia_request_io(link, &link->io);
if (i == 0)
break;
}
if (i != 0) {
cs_error(link, RequestIO, i);
goto failed;
}
/* Now allocate an interrupt line. Note that this does not actually
* assign a handler to the interrupt. */
CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
/* This actually configures the PCMCIA socket -- setting up the I/O
* windows and the interrupt mapping. */
CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
dev->irq = link->irq.AssignedIRQ;
dev->base_addr = link->io.BasePort1;
SET_NETDEV_DEV(dev, &handle_to_dev(link));
if (register_netdev(dev)) {
printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
goto failed;
}
this = netdev_priv(dev);
/*
* At this point, the dev_node_t structure(s) should be initialized and
* arranged in a linked list at link->dev_node.
*/
link->dev_node = &this->node;
this->base_addr = dev->base_addr;
if (!wl3501_get_flash_mac_addr(this)) {
printk(KERN_WARNING "%s: Cant read MAC addr in flash ROM?\n",
dev->name);
goto failed;
}
strcpy(this->node.dev_name, dev->name);
for (i = 0; i < 6; i++)
dev->dev_addr[i] = ((char *)&this->mac_addr)[i];
/* print probe information */
printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, "
"MAC addr in flash ROM:%pM\n",
dev->name, this->base_addr, (int)dev->irq,
dev->dev_addr);
/*
* Initialize card parameters - added by jss
*/
this->net_type = IW_MODE_INFRA;
this->bss_cnt = 0;
this->join_sta_bss = 0;
this->adhoc_times = 0;
iw_set_mgmt_info_element(IW_MGMT_INFO_ELEMENT_SSID, &this->essid.el,
"ANY", 3);
this->card_name[0] = '\0';
this->firmware_date[0] = '\0';
this->rssi = 255;
this->chan = iw_default_channel(this->reg_domain);
strlcpy(this->nick, "Planet WL3501", sizeof(this->nick));
spin_lock_init(&this->lock);
init_waitqueue_head(&this->wait);
netif_start_queue(dev);
return 0;
cs_failed:
cs_error(link, last_fn, last_ret);
failed:
wl3501_release(link);
return -ENODEV;
}
/**
* wl3501_release - unregister the net, release PCMCIA configuration
* @arg - link
*
* After a card is removed, wl3501_release() will unregister the net device,
* and release the PCMCIA configuration. If the device is still open, this
* will be postponed until it is closed.
*/
static void wl3501_release(struct pcmcia_device *link)
{
struct net_device *dev = link->priv;
/* Unlink the device chain */
if (link->dev_node)
unregister_netdev(dev);
pcmcia_disable_device(link);
}
static int wl3501_suspend(struct pcmcia_device *link)
{
struct net_device *dev = link->priv;
wl3501_pwr_mgmt(netdev_priv(dev), WL3501_SUSPEND);
if (link->open)
netif_device_detach(dev);
return 0;
}
static int wl3501_resume(struct pcmcia_device *link)
{
struct net_device *dev = link->priv;
wl3501_pwr_mgmt(netdev_priv(dev), WL3501_RESUME);
if (link->open) {
wl3501_reset(dev);
netif_device_attach(dev);
}
return 0;
}
static struct pcmcia_device_id wl3501_ids[] = {
PCMCIA_DEVICE_MANF_CARD(0xd601, 0x0001),
PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, wl3501_ids);
static struct pcmcia_driver wl3501_driver = {
.owner = THIS_MODULE,
.drv = {
.name = "wl3501_cs",
},
.probe = wl3501_probe,
.remove = wl3501_detach,
.id_table = wl3501_ids,
.suspend = wl3501_suspend,
.resume = wl3501_resume,
};
static int __init wl3501_init_module(void)
{
return pcmcia_register_driver(&wl3501_driver);
}
static void __exit wl3501_exit_module(void)
{
pcmcia_unregister_driver(&wl3501_driver);
}
module_init(wl3501_init_module);
module_exit(wl3501_exit_module);
MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
"Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
"Gustavo Niemeyer <niemeyer@conectiva.com>");
MODULE_DESCRIPTION("Planet wl3501 wireless driver");
MODULE_LICENSE("GPL");
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