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linux/drivers/net/wireless/wl3501_cs.c
Dan Carpenter 2fb40577b0 wl3501_cs: min_t() cast truncates high bits 
wrqu->encoding.length comes from the network administrator.  It's
size u16.  We want to limit "tocopy" to the smallest value of either
"len_keys", "wrqu->encoding.length" or 100.  But because .length
gets cast from u16 to u8 we might use a random, smaller value than
the was desired.  It's probably not very serious, but we may as well
fix it.

Btw, this is from code auditing and not from testing.  I don't know
if this affects anyone in real life.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-27 14:36:04 -04:00

2037 lines
54 KiB
C
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/*
* 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/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 <linux/ieee80211.h>
#include <net/iw_handler.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(); }
#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
static int wl3501_config(struct pcmcia_device *link);
static void wl3501_release(struct pcmcia_device *link);
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 address.
*
* 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 = Position 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 = 0;
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;
pr_debug("entry");
wl3501_get_from_wla(this, addr, &sig, sizeof(sig));
if (sig.status == WL3501_STATUS_SUCCESS) {
pr_debug("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) {
pr_debug("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,
};
pr_debug("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,
};
pr_debug("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;
pr_debug("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;
pr_debug("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);
dev->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);
dev->stats.rx_packets++;
dev->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)
{
pr_debug("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;
pr_debug("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;
pr_debug("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;
pr_debug("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);
pr_debug("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);
pr_debug("%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 = &dev->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; /* prevent tx timeout */
netif_wake_queue(dev);
}
}
/*
* Return : 0 - OK
* 1 - Could not transmit (dev_queue_xmit will queue it)
* and try to sent it later
*/
static netdev_tx_t 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);
rc = wl3501_send_pkt(this, skb->data, skb->len);
if (enabled)
wl3501_unblock_interrupt(this);
if (rc) {
++dev->stats.tx_dropped;
netif_stop_queue(dev);
} else {
++dev->stats.tx_packets;
dev->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 NETDEV_TX_OK;
}
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 */
pr_debug("%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;
pr_debug("%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 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;
}
/**
* 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);
unregister_netdev(dev);
if (link->priv)
free_netdev(link->priv);
}
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 = ieee80211_dsss_chan_to_freq(this->chan) * 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(u16, 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[] = {
IW_HANDLER(SIOCGIWNAME, wl3501_get_name),
IW_HANDLER(SIOCSIWFREQ, wl3501_set_freq),
IW_HANDLER(SIOCGIWFREQ, wl3501_get_freq),
IW_HANDLER(SIOCSIWMODE, wl3501_set_mode),
IW_HANDLER(SIOCGIWMODE, wl3501_get_mode),
IW_HANDLER(SIOCGIWSENS, wl3501_get_sens),
IW_HANDLER(SIOCGIWRANGE, wl3501_get_range),
IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy),
IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy),
IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy),
IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy),
IW_HANDLER(SIOCSIWAP, wl3501_set_wap),
IW_HANDLER(SIOCGIWAP, wl3501_get_wap),
IW_HANDLER(SIOCSIWSCAN, wl3501_set_scan),
IW_HANDLER(SIOCGIWSCAN, wl3501_get_scan),
IW_HANDLER(SIOCSIWESSID, wl3501_set_essid),
IW_HANDLER(SIOCGIWESSID, wl3501_get_essid),
IW_HANDLER(SIOCSIWNICKN, wl3501_set_nick),
IW_HANDLER(SIOCGIWNICKN, wl3501_get_nick),
IW_HANDLER(SIOCGIWRATE, wl3501_get_rate),
IW_HANDLER(SIOCGIWRTS, wl3501_get_rts_threshold),
IW_HANDLER(SIOCGIWFRAG, wl3501_get_frag_threshold),
IW_HANDLER(SIOCGIWTXPOW, wl3501_get_txpow),
IW_HANDLER(SIOCGIWRETRY, wl3501_get_retry),
IW_HANDLER(SIOCGIWENCODE, wl3501_get_encode),
IW_HANDLER(SIOCGIWPOWER, 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,
};
static const struct net_device_ops wl3501_netdev_ops = {
.ndo_open = wl3501_open,
.ndo_stop = wl3501_close,
.ndo_start_xmit = wl3501_hard_start_xmit,
.ndo_tx_timeout = wl3501_tx_timeout,
.ndo_change_mtu = eth_change_mtu,
.ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr,
};
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->resource[0]->end = 16;
p_dev->resource[0]->flags = IO_DATA_PATH_WIDTH_8;
/* General socket configuration */
p_dev->config_flags = CONF_ENABLE_IRQ;
p_dev->config_index = 1;
dev = alloc_etherdev(sizeof(struct wl3501_card));
if (!dev)
goto out_link;
dev->netdev_ops = &wl3501_netdev_ops;
dev->watchdog_timeo = 5 * HZ;
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 = &wl3501_handler_def;
netif_stop_queue(dev);
p_dev->priv = dev;
return wl3501_config(p_dev);
out_link:
return -ENOMEM;
}
static int wl3501_config(struct pcmcia_device *link)
{
struct net_device *dev = link->priv;
int i = 0, j, 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. */
link->io_lines = 5;
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->resource[0]->start = j;
link->resource[1]->start = link->resource[0]->start + 0x10;
i = pcmcia_request_io(link);
if (i == 0)
break;
}
if (i != 0)
goto failed;
/* Now allocate an interrupt line. Note that this does not actually
* assign a handler to the interrupt. */
ret = pcmcia_request_irq(link, wl3501_interrupt);
if (ret)
goto failed;
ret = pcmcia_enable_device(link);
if (ret)
goto failed;
dev->irq = link->irq;
dev->base_addr = link->resource[0]->start;
SET_NETDEV_DEV(dev, &link->dev);
if (register_netdev(dev)) {
printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n");
goto failed;
}
this = netdev_priv(dev);
this->base_addr = dev->base_addr;
if (!wl3501_get_flash_mac_addr(this)) {
printk(KERN_WARNING "%s: Can't read MAC addr in flash ROM?\n",
dev->name);
unregister_netdev(dev);
goto failed;
}
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;
failed:
wl3501_release(link);
return -ENODEV;
}
static void wl3501_release(struct pcmcia_device *link)
{
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 const 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,
.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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