diff options
Diffstat (limited to 'drivers/net/wireless/wl3501_cs.c')
| -rw-r--r-- | drivers/net/wireless/wl3501_cs.c | 2270 |
1 files changed, 2270 insertions, 0 deletions
diff --git a/drivers/net/wireless/wl3501_cs.c b/drivers/net/wireless/wl3501_cs.c new file mode 100644 index 000000000000..1433e5aaf1b4 --- /dev/null +++ b/drivers/net/wireless/wl3501_cs.c @@ -0,0 +1,2270 @@ +/* + * 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) + */ +#undef REALLY_SLOW_IO /* most systems can safely undef this */ + +#include <linux/config.h> +#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/version.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", __FUNCTION__ , ##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 void wl3501_config(dev_link_t *link); +static void wl3501_release(dev_link_t *link); +static int wl3501_event(event_t event, int pri, event_callback_args_t *args); + +/* + * 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); +} + +/* + * A linked list of "instances" of the wl24 device. Each actual PCMCIA card + * corresponds to one device instance, and is described by one dev_link_t + * structure (defined in ds.h). + * + * You may not want to use a linked list for this -- for example, the memory + * card driver uses an array of dev_link_t pointers, where minor device numbers + * are used to derive the corresponding array index. + */ +static dev_link_t *wl3501_dev_list; + +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) + */ +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) + */ +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", __FUNCTION__, + 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 = dev->priv; + + printk(KERN_INFO "%s: Wireless LAN online. BSSID: " + "%02X %02X %02X %02X %02X %02X\n", dev->name, + this->bssid[0], this->bssid[1], this->bssid[2], + this->bssid[3], this->bssid[4], this->bssid[5]); + 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 = dev->priv; + 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 */ + eth_copy_and_sum(skb, (unsigned char *)&sig.daddr, 12, 0); + wl3501_receive(this, skb->data, pkt_len); + skb_put(skb, pkt_len); + skb->protocol = eth_type_trans(skb, dev); + dev->last_rx = jiffies; + 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 = dev->priv; + 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 = dev->priv; + + 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 + * @regs - registers + * + * 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 pt_regs *regs) +{ + struct net_device *dev = (struct net_device *)dev_id; + struct wl3501_card *this; + int handled = 1; + + if (!dev) + goto unknown; + this = dev->priv; + spin_lock(&this->lock); + wl3501_ack_interrupt(this); + wl3501_block_interrupt(this); + wl3501_rx_interrupt(dev); + wl3501_unblock_interrupt(this); + spin_unlock(&this->lock); +out: + return IRQ_RETVAL(handled); +unknown: + handled = 0; + printk(KERN_ERR "%s: irq %d for unknown device.\n", __FUNCTION__, irq); + goto out; +} + +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", __FUNCTION__); + 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", __FUNCTION__); + goto out; +} + +static int wl3501_close(struct net_device *dev) +{ + struct wl3501_card *this = dev->priv; + int rc = -ENODEV; + unsigned long flags; + dev_link_t *link; + + spin_lock_irqsave(&this->lock, flags); + /* Check if the device is in wl3501_dev_list */ + for (link = wl3501_dev_list; link; link = link->next) + if (link->priv == dev) + break; + if (!link) + goto out; + 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); +out: + 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 = dev->priv; + 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 = dev->priv; + 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 = dev->priv; + 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 = dev->priv; + unsigned long flags; + dev_link_t *link; + + spin_lock_irqsave(&this->lock, flags); + /* Check if the device is in wl3501_dev_list */ + for (link = wl3501_dev_list; link; link = link->next) + if (link->priv == dev) + break; + if (!DEV_OK(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; +} + +struct net_device_stats *wl3501_get_stats(struct net_device *dev) +{ + struct wl3501_card *this = dev->priv; + + return &this->stats; +} + +struct iw_statistics *wl3501_get_wireless_stats(struct net_device *dev) +{ + struct wl3501_card *this = dev->priv; + 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 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(dev_link_t *link) +{ + dev_link_t **linkp; + + /* Locate device structure */ + for (linkp = &wl3501_dev_list; *linkp; linkp = &(*linkp)->next) + if (*linkp == link) + break; + if (!*linkp) + goto out; + + /* 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(). */ + + if (link->state & DEV_CONFIG) { +#ifdef PCMCIA_DEBUG + printk(KERN_DEBUG "wl3501_cs: detach postponed, '%s' " + "still locked\n", link->dev->dev_name); +#endif + goto out; + } + + /* Break the link with Card Services */ + if (link->handle) + pcmcia_deregister_client(link->handle); + + /* Unlink device structure, free pieces */ + *linkp = link->next; + + if (link->priv) + free_netdev(link->priv); + kfree(link); +out: + 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 = dev->priv; + 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 = dev->priv; + + 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 = dev->priv; + + 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 = dev->priv; + + 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 = dev->priv; + + 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 = dev->priv; + 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 = dev->priv; + + 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 = dev->priv; + 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(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(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(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(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(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 = dev->priv; + + 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 = dev->priv; + 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 = dev->priv; + + 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 = dev->priv; + + 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 = dev->priv; + 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 = dev->priv; + 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 = dev->priv; + 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 = dev->priv; + 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_MAX) { + wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX; + 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_MIN; +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 = dev->priv; + 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; + memset(extra, 0, 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 = dev->priv; + 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 = sizeof(wl3501_handler) / sizeof(iw_handler), + .standard = (iw_handler *)wl3501_handler, + .spy_offset = offsetof(struct wl3501_card, spy_data), +}; + +/** + * 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 dev_link_t *wl3501_attach(void) +{ + client_reg_t client_reg; + dev_link_t *link; + struct net_device *dev; + int ret; + + /* Initialize the dev_link_t structure */ + link = kmalloc(sizeof(*link), GFP_KERNEL); + if (!link) + goto out; + memset(link, 0, sizeof(struct dev_link_t)); + + /* The io structure describes IO port mapping */ + link->io.NumPorts1 = 16; + link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; + link->io.IOAddrLines = 5; + + /* Interrupt setup */ + link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT; + link->irq.IRQInfo1 = IRQ_LEVEL_ID; + link->irq.Handler = wl3501_interrupt; + + /* General socket configuration */ + link->conf.Attributes = CONF_ENABLE_IRQ; + link->conf.Vcc = 50; + link->conf.IntType = INT_MEMORY_AND_IO; + link->conf.ConfigIndex = 1; + link->conf.Present = PRESENT_OPTION; + + 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; + dev->get_wireless_stats = wl3501_get_wireless_stats; + dev->wireless_handlers = (struct iw_handler_def *)&wl3501_handler_def; + SET_ETHTOOL_OPS(dev, &ops); + netif_stop_queue(dev); + link->priv = link->irq.Instance = dev; + + /* Register with Card Services */ + link->next = wl3501_dev_list; + wl3501_dev_list = link; + client_reg.dev_info = &wl3501_dev_info; + client_reg.EventMask = CS_EVENT_CARD_INSERTION | + CS_EVENT_RESET_PHYSICAL | + CS_EVENT_CARD_RESET | + CS_EVENT_CARD_REMOVAL | + CS_EVENT_PM_SUSPEND | + CS_EVENT_PM_RESUME; + client_reg.event_handler = wl3501_event; + client_reg.Version = 0x0210; + client_reg.event_callback_args.client_data = link; + ret = pcmcia_register_client(&link->handle, &client_reg); + if (ret) { + cs_error(link->handle, RegisterClient, ret); + wl3501_detach(link); + link = NULL; + } +out: + return link; +out_link: + kfree(link); + link = NULL; + goto out; +} + +#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 void wl3501_config(dev_link_t *link) +{ + tuple_t tuple; + cisparse_t parse; + client_handle_t handle = link->handle; + struct net_device *dev = link->priv; + int i = 0, j, last_fn, last_ret; + unsigned char bf[64]; + struct wl3501_card *this; + + /* This reads the card's CONFIG tuple to find its config registers. */ + tuple.Attributes = 0; + tuple.DesiredTuple = CISTPL_CONFIG; + CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); + tuple.TupleData = bf; + tuple.TupleDataMax = sizeof(bf); + tuple.TupleOffset = 0; + CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); + CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse)); + link->conf.ConfigBase = parse.config.base; + link->conf.Present = parse.config.rmask[0]; + + /* Configure card */ + link->state |= DEV_CONFIG; + + /* 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->handle, &link->io); + if (i == CS_SUCCESS) + break; + } + if (i != CS_SUCCESS) { + cs_error(link->handle, 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->handle, &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->handle, &link->conf)); + + dev->irq = link->irq.AssignedIRQ; + dev->base_addr = link->io.BasePort1; + SET_NETDEV_DEV(dev, &handle_to_dev(handle)); + if (register_netdev(dev)) { + printk(KERN_NOTICE "wl3501_cs: register_netdev() failed\n"); + goto failed; + } + + SET_MODULE_OWNER(dev); + + this = dev->priv; + /* + * At this point, the dev_node_t structure(s) should be initialized and + * arranged in a linked list at link->dev. + */ + link->dev = &this->node; + link->state &= ~DEV_CONFIG_PENDING; + + 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); + + /* print probe information */ + printk(KERN_INFO "%s: wl3501 @ 0x%3.3x, IRQ %d, MAC addr in flash ROM:", + dev->name, this->base_addr, (int)dev->irq); + for (i = 0; i < 6; i++) { + dev->dev_addr[i] = ((char *)&this->mac_addr)[i]; + printk("%c%02x", i ? ':' : ' ', dev->dev_addr[i]); + } + printk("\n"); + /* + * 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); + goto out; +cs_failed: + cs_error(link->handle, last_fn, last_ret); +failed: + wl3501_release(link); +out: + return; +} + +/** + * 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(dev_link_t *link) +{ + struct net_device *dev = link->priv; + + /* Unlink the device chain */ + if (link->dev) { + unregister_netdev(dev); + link->dev = NULL; + } + + /* Don't bother checking to see if these succeed or not */ + pcmcia_release_configuration(link->handle); + pcmcia_release_io(link->handle, &link->io); + pcmcia_release_irq(link->handle, &link->irq); + link->state &= ~DEV_CONFIG; +} + +/** + * wl3501_event - The card status event handler + * @event - event + * @pri - priority + * @args - arguments for this event + * + * The card status event handler. Mostly, this schedules other stuff to run + * after an event is received. A CARD_REMOVAL event also sets some flags to + * discourage the net drivers from trying to talk to the card any more. + * + * When a CARD_REMOVAL event is received, we immediately set a flag to block + * future accesses to this device. All the functions that actually access the + * device should check this flag to make sure the card is still present. + */ +static int wl3501_event(event_t event, int pri, event_callback_args_t *args) +{ + dev_link_t *link = args->client_data; + struct net_device *dev = link->priv; + + switch (event) { + case CS_EVENT_CARD_REMOVAL: + link->state &= ~DEV_PRESENT; + if (link->state & DEV_CONFIG) { + while (link->open > 0) + wl3501_close(dev); + netif_device_detach(dev); + wl3501_release(link); + } + break; + case CS_EVENT_CARD_INSERTION: + link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; + wl3501_config(link); + break; + case CS_EVENT_PM_SUSPEND: + link->state |= DEV_SUSPEND; + wl3501_pwr_mgmt(dev->priv, WL3501_SUSPEND); + /* Fall through... */ + case CS_EVENT_RESET_PHYSICAL: + if (link->state & DEV_CONFIG) { + if (link->open) + netif_device_detach(dev); + pcmcia_release_configuration(link->handle); + } + break; + case CS_EVENT_PM_RESUME: + link->state &= ~DEV_SUSPEND; + wl3501_pwr_mgmt(dev->priv, WL3501_RESUME); + /* Fall through... */ + case CS_EVENT_CARD_RESET: + if (link->state & DEV_CONFIG) { + pcmcia_request_configuration(link->handle, &link->conf); + if (link->open) { + wl3501_reset(dev); + netif_device_attach(dev); + } + } + break; + } + return 0; +} + +static struct pcmcia_driver wl3501_driver = { + .owner = THIS_MODULE, + .drv = { + .name = "wl3501_cs", + }, + .attach = wl3501_attach, + .detach = wl3501_detach, +}; + +static int __init wl3501_init_module(void) +{ + return pcmcia_register_driver(&wl3501_driver); +} + +static void __exit wl3501_exit_module(void) +{ + dprintk(0, ": unloading"); + pcmcia_unregister_driver(&wl3501_driver); + BUG_ON(wl3501_dev_list != NULL); +} + +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"); |