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ray_cs.c
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// SPDX-License-Identifier: GPL-2.0-only
/*=============================================================================
*
* A PCMCIA client driver for the Raylink wireless LAN card.
* The starting point for this module was the skeleton.c in the
* PCMCIA 2.9.12 package written by David Hinds, dahinds@users.sourceforge.net
*
* Copyright (c) 1998 Corey Thomas (corey@world.std.com)
*
* Changes:
* Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 08/08/2000
* - reorganize kmallocs in ray_attach, checking all for failure
* and releasing the previous allocations if one fails
*
* Daniele Bellucci <bellucda@tiscali.it> - 07/10/2003
* - Audit copy_to_user in ioctl(SIOCGIWESSID)
*
=============================================================================*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/proc_fs.h>
#include <linux/ptrace.h>
#include <linux/seq_file.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/if_arp.h>
#include <linux/ioport.h>
#include <linux/skbuff.h>
#include <linux/ieee80211.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>
#include <linux/wireless.h>
#include <net/iw_handler.h>
#include <asm/io.h>
#include <asm/byteorder.h>
#include <linux/uaccess.h>
/* Warning : these stuff will slow down the driver... */
#define WIRELESS_SPY /* Enable spying addresses */
/* Definitions we need for spy */
typedef struct iw_statistics iw_stats;
typedef u_char mac_addr[ETH_ALEN]; /* Hardware address */
#include "rayctl.h"
#include "ray_cs.h"
/** Prototypes based on PCMCIA skeleton driver *******************************/
static int ray_config(struct pcmcia_device *link);
static void ray_release(struct pcmcia_device *link);
static void ray_detach(struct pcmcia_device *p_dev);
/***** Prototypes indicated by device structure ******************************/
static int ray_dev_close(struct net_device *dev);
static int ray_dev_config(struct net_device *dev, struct ifmap *map);
static struct net_device_stats *ray_get_stats(struct net_device *dev);
static int ray_dev_init(struct net_device *dev);
static int ray_open(struct net_device *dev);
static netdev_tx_t ray_dev_start_xmit(struct sk_buff *skb,
struct net_device *dev);
static void set_multicast_list(struct net_device *dev);
static void ray_update_multi_list(struct net_device *dev, int all);
static int translate_frame(ray_dev_t *local, struct tx_msg __iomem *ptx,
unsigned char *data, int len);
static void ray_build_header(ray_dev_t *local, struct tx_msg __iomem *ptx,
UCHAR msg_type, unsigned char *data);
static void untranslate(ray_dev_t *local, struct sk_buff *skb, int len);
static iw_stats *ray_get_wireless_stats(struct net_device *dev);
static const struct iw_handler_def ray_handler_def;
/***** Prototypes for raylink functions **************************************/
static void authenticate(ray_dev_t *local);
static int build_auth_frame(ray_dev_t *local, UCHAR *dest, int auth_type);
static void authenticate_timeout(struct timer_list *t);
static int get_free_ccs(ray_dev_t *local);
static int get_free_tx_ccs(ray_dev_t *local);
static void init_startup_params(ray_dev_t *local);
static int parse_addr(char *in_str, UCHAR *out);
static int ray_hw_xmit(unsigned char *data, int len, struct net_device *dev, UCHAR type);
static int ray_init(struct net_device *dev);
static int interrupt_ecf(ray_dev_t *local, int ccs);
static void ray_reset(struct net_device *dev);
static void ray_update_parm(struct net_device *dev, UCHAR objid, UCHAR *value, int len);
static void verify_dl_startup(struct timer_list *t);
/* Prototypes for interrpt time functions **********************************/
static irqreturn_t ray_interrupt(int reg, void *dev_id);
static void clear_interrupt(ray_dev_t *local);
static void rx_deauthenticate(ray_dev_t *local, struct rcs __iomem *prcs,
unsigned int pkt_addr, int rx_len);
static int copy_from_rx_buff(ray_dev_t *local, UCHAR *dest, int pkt_addr, int len);
static void ray_rx(struct net_device *dev, ray_dev_t *local, struct rcs __iomem *prcs);
static void release_frag_chain(ray_dev_t *local, struct rcs __iomem *prcs);
static void rx_authenticate(ray_dev_t *local, struct rcs __iomem *prcs,
unsigned int pkt_addr, int rx_len);
static void rx_data(struct net_device *dev, struct rcs __iomem *prcs,
unsigned int pkt_addr, int rx_len);
static void associate(ray_dev_t *local);
/* Card command functions */
static int dl_startup_params(struct net_device *dev);
static void join_net(struct timer_list *t);
static void start_net(struct timer_list *t);
/*===========================================================================*/
/* Parameters that can be set with 'insmod' */
/* ADHOC=0, Infrastructure=1 */
static int net_type = ADHOC;
/* Hop dwell time in Kus (1024 us units defined by 802.11) */
static int hop_dwell = 128;
/* Beacon period in Kus */
static int beacon_period = 256;
/* power save mode (0 = off, 1 = save power) */
static int psm;
/* String for network's Extended Service Set ID. 32 Characters max */
static char *essid;
/* Default to encapsulation unless translation requested */
static bool translate = true;
static int country = USA;
static int sniffer;
static int bc;
/* 48 bit physical card address if overriding card's real physical
* address is required. Since IEEE 802.11 addresses are 48 bits
* like ethernet, an int can't be used, so a string is used. To
* allow use of addresses starting with a decimal digit, the first
* character must be a letter and will be ignored. This letter is
* followed by up to 12 hex digits which are the address. If less
* than 12 digits are used, the address will be left filled with 0's.
* Note that bit 0 of the first byte is the broadcast bit, and evil
* things will happen if it is not 0 in a card address.
*/
static char *phy_addr = NULL;
static unsigned int ray_mem_speed = 500;
/* WARNING: THIS DRIVER IS NOT CAPABLE OF HANDLING MULTIPLE DEVICES! */
static struct pcmcia_device *this_device = NULL;
MODULE_AUTHOR("Corey Thomas <corey@world.std.com>");
MODULE_DESCRIPTION("Raylink/WebGear wireless LAN driver");
MODULE_LICENSE("GPL");
module_param(net_type, int, 0);
module_param(hop_dwell, int, 0);
module_param(beacon_period, int, 0);
module_param(psm, int, 0);
module_param(essid, charp, 0);
module_param(translate, bool, 0);
module_param(country, int, 0);
module_param(sniffer, int, 0);
module_param(bc, int, 0);
module_param(phy_addr, charp, 0);
module_param(ray_mem_speed, int, 0);
static const UCHAR b5_default_startup_parms[] = {
0, 0, /* Adhoc station */
'L', 'I', 'N', 'U', 'X', 0, 0, 0, /* 32 char ESSID */
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
1, 0, /* Active scan, CA Mode */
0, 0, 0, 0, 0, 0, /* No default MAC addr */
0x7f, 0xff, /* Frag threshold */
0x00, 0x80, /* Hop time 128 Kus */
0x01, 0x00, /* Beacon period 256 Kus */
0x01, 0x07, 0xa3, /* DTIM, retries, ack timeout */
0x1d, 0x82, 0x4e, /* SIFS, DIFS, PIFS */
0x7f, 0xff, /* RTS threshold */
0x04, 0xe2, 0x38, 0xA4, /* scan_dwell, max_scan_dwell */
0x05, /* assoc resp timeout thresh */
0x08, 0x02, 0x08, /* adhoc, infra, super cycle max */
0, /* Promiscuous mode */
0x0c, 0x0bd, /* Unique word */
0x32, /* Slot time */
0xff, 0xff, /* roam-low snr, low snr count */
0x05, 0xff, /* Infra, adhoc missed bcn thresh */
0x01, 0x0b, 0x4f, /* USA, hop pattern, hop pat length */
/* b4 - b5 differences start here */
0x00, 0x3f, /* CW max */
0x00, 0x0f, /* CW min */
0x04, 0x08, /* Noise gain, limit offset */
0x28, 0x28, /* det rssi, med busy offsets */
7, /* det sync thresh */
0, 2, 2, /* test mode, min, max */
0, /* allow broadcast SSID probe resp */
0, 0, /* privacy must start, can join */
2, 0, 0, 0, 0, 0, 0, 0 /* basic rate set */
};
static const UCHAR b4_default_startup_parms[] = {
0, 0, /* Adhoc station */
'L', 'I', 'N', 'U', 'X', 0, 0, 0, /* 32 char ESSID */
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
1, 0, /* Active scan, CA Mode */
0, 0, 0, 0, 0, 0, /* No default MAC addr */
0x7f, 0xff, /* Frag threshold */
0x02, 0x00, /* Hop time */
0x00, 0x01, /* Beacon period */
0x01, 0x07, 0xa3, /* DTIM, retries, ack timeout */
0x1d, 0x82, 0xce, /* SIFS, DIFS, PIFS */
0x7f, 0xff, /* RTS threshold */
0xfb, 0x1e, 0xc7, 0x5c, /* scan_dwell, max_scan_dwell */
0x05, /* assoc resp timeout thresh */
0x04, 0x02, 0x4, /* adhoc, infra, super cycle max */
0, /* Promiscuous mode */
0x0c, 0x0bd, /* Unique word */
0x4e, /* Slot time (TBD seems wrong) */
0xff, 0xff, /* roam-low snr, low snr count */
0x05, 0xff, /* Infra, adhoc missed bcn thresh */
0x01, 0x0b, 0x4e, /* USA, hop pattern, hop pat length */
/* b4 - b5 differences start here */
0x3f, 0x0f, /* CW max, min */
0x04, 0x08, /* Noise gain, limit offset */
0x28, 0x28, /* det rssi, med busy offsets */
7, /* det sync thresh */
0, 2, 2, /* test mode, min, max */
0, /* rx/tx delay */
0, 0, 0, 0, 0, 0, /* current BSS id */
0 /* hop set */
};
/*===========================================================================*/
static const u8 eth2_llc[] = { 0xaa, 0xaa, 3, 0, 0, 0 };
static const char hop_pattern_length[] = { 1,
USA_HOP_MOD, EUROPE_HOP_MOD,
JAPAN_HOP_MOD, KOREA_HOP_MOD,
SPAIN_HOP_MOD, FRANCE_HOP_MOD,
ISRAEL_HOP_MOD, AUSTRALIA_HOP_MOD,
JAPAN_TEST_HOP_MOD
};
static const char rcsid[] =
"Raylink/WebGear wireless LAN - Corey <Thomas corey@world.std.com>";
static const struct net_device_ops ray_netdev_ops = {
.ndo_init = ray_dev_init,
.ndo_open = ray_open,
.ndo_stop = ray_dev_close,
.ndo_start_xmit = ray_dev_start_xmit,
.ndo_set_config = ray_dev_config,
.ndo_get_stats = ray_get_stats,
.ndo_set_rx_mode = set_multicast_list,
.ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr,
};
static int ray_probe(struct pcmcia_device *p_dev)
{
ray_dev_t *local;
struct net_device *dev;
dev_dbg(&p_dev->dev, "ray_attach()\n");
/* Allocate space for private device-specific data */
dev = alloc_etherdev(sizeof(ray_dev_t));
if (!dev)
goto fail_alloc_dev;
local = netdev_priv(dev);
local->finder = p_dev;
/* The io structure describes IO port mapping. None used here */
p_dev->resource[0]->end = 0;
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;
p_dev->priv = dev;
local->finder = p_dev;
local->card_status = CARD_INSERTED;
local->authentication_state = UNAUTHENTICATED;
local->num_multi = 0;
dev_dbg(&p_dev->dev, "ray_attach p_dev = %p, dev = %p, local = %p, intr = %p\n",
p_dev, dev, local, &ray_interrupt);
/* Raylink entries in the device structure */
dev->netdev_ops = &ray_netdev_ops;
dev->wireless_handlers = &ray_handler_def;
#ifdef WIRELESS_SPY
local->wireless_data.spy_data = &local->spy_data;
dev->wireless_data = &local->wireless_data;
#endif /* WIRELESS_SPY */
dev_dbg(&p_dev->dev, "ray_cs ray_attach calling ether_setup.)\n");
netif_stop_queue(dev);
timer_setup(&local->timer, NULL, 0);
this_device = p_dev;
return ray_config(p_dev);
fail_alloc_dev:
return -ENOMEM;
} /* ray_attach */
static void ray_detach(struct pcmcia_device *link)
{
struct net_device *dev;
ray_dev_t *local;
dev_dbg(&link->dev, "ray_detach\n");
this_device = NULL;
dev = link->priv;
ray_release(link);
local = netdev_priv(dev);
del_timer_sync(&local->timer);
if (link->priv) {
unregister_netdev(dev);
free_netdev(dev);
}
dev_dbg(&link->dev, "ray_cs ray_detach ending\n");
} /* ray_detach */
#define MAX_TUPLE_SIZE 128
static int ray_config(struct pcmcia_device *link)
{
int ret = 0;
int i;
struct net_device *dev = (struct net_device *)link->priv;
ray_dev_t *local = netdev_priv(dev);
dev_dbg(&link->dev, "ray_config\n");
/* Determine card type and firmware version */
printk(KERN_INFO "ray_cs Detected: %s%s%s%s\n",
link->prod_id[0] ? link->prod_id[0] : " ",
link->prod_id[1] ? link->prod_id[1] : " ",
link->prod_id[2] ? link->prod_id[2] : " ",
link->prod_id[3] ? link->prod_id[3] : " ");
/* Now allocate an interrupt line. Note that this does not
actually assign a handler to the interrupt.
*/
ret = pcmcia_request_irq(link, ray_interrupt);
if (ret)
goto failed;
dev->irq = link->irq;
ret = pcmcia_enable_device(link);
if (ret)
goto failed;
/*** Set up 32k window for shared memory (transmit and control) ************/
link->resource[2]->flags |= WIN_DATA_WIDTH_8 | WIN_MEMORY_TYPE_CM | WIN_ENABLE | WIN_USE_WAIT;
link->resource[2]->start = 0;
link->resource[2]->end = 0x8000;
ret = pcmcia_request_window(link, link->resource[2], ray_mem_speed);
if (ret)
goto failed;
ret = pcmcia_map_mem_page(link, link->resource[2], 0);
if (ret)
goto failed;
local->sram = ioremap(link->resource[2]->start,
resource_size(link->resource[2]));
/*** Set up 16k window for shared memory (receive buffer) ***************/
link->resource[3]->flags |=
WIN_DATA_WIDTH_8 | WIN_MEMORY_TYPE_CM | WIN_ENABLE | WIN_USE_WAIT;
link->resource[3]->start = 0;
link->resource[3]->end = 0x4000;
ret = pcmcia_request_window(link, link->resource[3], ray_mem_speed);
if (ret)
goto failed;
ret = pcmcia_map_mem_page(link, link->resource[3], 0x8000);
if (ret)
goto failed;
local->rmem = ioremap(link->resource[3]->start,
resource_size(link->resource[3]));
/*** Set up window for attribute memory ***********************************/
link->resource[4]->flags |=
WIN_DATA_WIDTH_8 | WIN_MEMORY_TYPE_AM | WIN_ENABLE | WIN_USE_WAIT;
link->resource[4]->start = 0;
link->resource[4]->end = 0x1000;
ret = pcmcia_request_window(link, link->resource[4], ray_mem_speed);
if (ret)
goto failed;
ret = pcmcia_map_mem_page(link, link->resource[4], 0);
if (ret)
goto failed;
local->amem = ioremap(link->resource[4]->start,
resource_size(link->resource[4]));
dev_dbg(&link->dev, "ray_config sram=%p\n", local->sram);
dev_dbg(&link->dev, "ray_config rmem=%p\n", local->rmem);
dev_dbg(&link->dev, "ray_config amem=%p\n", local->amem);
if (ray_init(dev) < 0) {
ray_release(link);
return -ENODEV;
}
SET_NETDEV_DEV(dev, &link->dev);
i = register_netdev(dev);
if (i != 0) {
printk("ray_config register_netdev() failed\n");
ray_release(link);
return i;
}
printk(KERN_INFO "%s: RayLink, irq %d, hw_addr %pM\n",
dev->name, dev->irq, dev->dev_addr);
return 0;
failed:
ray_release(link);
return -ENODEV;
} /* ray_config */
static inline struct ccs __iomem *ccs_base(ray_dev_t *dev)
{
return dev->sram + CCS_BASE;
}
static inline struct rcs __iomem *rcs_base(ray_dev_t *dev)
{
/*
* This looks nonsensical, since there is a separate
* RCS_BASE. But the difference between a "struct rcs"
* and a "struct ccs" ends up being in the _index_ off
* the base, so the base pointer is the same for both
* ccs/rcs.
*/
return dev->sram + CCS_BASE;
}
/*===========================================================================*/
static int ray_init(struct net_device *dev)
{
int i;
struct ccs __iomem *pccs;
ray_dev_t *local = netdev_priv(dev);
struct pcmcia_device *link = local->finder;
dev_dbg(&link->dev, "ray_init(0x%p)\n", dev);
if (!(pcmcia_dev_present(link))) {
dev_dbg(&link->dev, "ray_init - device not present\n");
return -1;
}
local->net_type = net_type;
local->sta_type = TYPE_STA;
/* Copy the startup results to local memory */
memcpy_fromio(&local->startup_res, local->sram + ECF_TO_HOST_BASE,
sizeof(struct startup_res_6));
/* Check Power up test status and get mac address from card */
if (local->startup_res.startup_word != 0x80) {
printk(KERN_INFO "ray_init ERROR card status = %2x\n",
local->startup_res.startup_word);
local->card_status = CARD_INIT_ERROR;
return -1;
}
local->fw_ver = local->startup_res.firmware_version[0];
local->fw_bld = local->startup_res.firmware_version[1];
local->fw_var = local->startup_res.firmware_version[2];
dev_dbg(&link->dev, "ray_init firmware version %d.%d\n", local->fw_ver,
local->fw_bld);
local->tib_length = 0x20;
if ((local->fw_ver == 5) && (local->fw_bld >= 30))
local->tib_length = local->startup_res.tib_length;
dev_dbg(&link->dev, "ray_init tib_length = 0x%02x\n", local->tib_length);
/* Initialize CCS's to buffer free state */
pccs = ccs_base(local);
for (i = 0; i < NUMBER_OF_CCS; i++) {
writeb(CCS_BUFFER_FREE, &(pccs++)->buffer_status);
}
init_startup_params(local);
/* copy mac address to startup parameters */
if (!parse_addr(phy_addr, local->sparm.b4.a_mac_addr)) {
memcpy(&local->sparm.b4.a_mac_addr,
&local->startup_res.station_addr, ADDRLEN);
}
clear_interrupt(local); /* Clear any interrupt from the card */
local->card_status = CARD_AWAITING_PARAM;
dev_dbg(&link->dev, "ray_init ending\n");
return 0;
} /* ray_init */
/*===========================================================================*/
/* Download startup parameters to the card and command it to read them */
static int dl_startup_params(struct net_device *dev)
{
int ccsindex;
ray_dev_t *local = netdev_priv(dev);
struct ccs __iomem *pccs;
struct pcmcia_device *link = local->finder;
dev_dbg(&link->dev, "dl_startup_params entered\n");
if (!(pcmcia_dev_present(link))) {
dev_dbg(&link->dev, "ray_cs dl_startup_params - device not present\n");
return -1;
}
/* Copy parameters to host to ECF area */
if (local->fw_ver == 0x55)
memcpy_toio(local->sram + HOST_TO_ECF_BASE, &local->sparm.b4,
sizeof(struct b4_startup_params));
else
memcpy_toio(local->sram + HOST_TO_ECF_BASE, &local->sparm.b5,
sizeof(struct b5_startup_params));
/* Fill in the CCS fields for the ECF */
if ((ccsindex = get_free_ccs(local)) < 0)
return -1;
local->dl_param_ccs = ccsindex;
pccs = ccs_base(local) + ccsindex;
writeb(CCS_DOWNLOAD_STARTUP_PARAMS, &pccs->cmd);
dev_dbg(&link->dev, "dl_startup_params start ccsindex = %d\n",
local->dl_param_ccs);
/* Interrupt the firmware to process the command */
if (interrupt_ecf(local, ccsindex)) {
printk(KERN_INFO "ray dl_startup_params failed - "
"ECF not ready for intr\n");
local->card_status = CARD_DL_PARAM_ERROR;
writeb(CCS_BUFFER_FREE, &(pccs++)->buffer_status);
return -2;
}
local->card_status = CARD_DL_PARAM;
/* Start kernel timer to wait for dl startup to complete. */
local->timer.expires = jiffies + HZ / 2;
local->timer.function = verify_dl_startup;
add_timer(&local->timer);
dev_dbg(&link->dev,
"ray_cs dl_startup_params started timer for verify_dl_startup\n");
return 0;
} /* dl_startup_params */
/*===========================================================================*/
static void init_startup_params(ray_dev_t *local)
{
int i;
if (country > JAPAN_TEST)
country = USA;
else if (country < USA)
country = USA;
/* structure for hop time and beacon period is defined here using
* New 802.11D6.1 format. Card firmware is still using old format
* until version 6.
* Before After
* a_hop_time ms byte a_hop_time ms byte
* a_hop_time 2s byte a_hop_time ls byte
* a_hop_time ls byte a_beacon_period ms byte
* a_beacon_period a_beacon_period ls byte
*
* a_hop_time = uS a_hop_time = KuS
* a_beacon_period = hops a_beacon_period = KuS
*//* 64ms = 010000 */
if (local->fw_ver == 0x55) {
memcpy(&local->sparm.b4, b4_default_startup_parms,
sizeof(struct b4_startup_params));
/* Translate sane kus input values to old build 4/5 format */
/* i = hop time in uS truncated to 3 bytes */
i = (hop_dwell * 1024) & 0xffffff;
local->sparm.b4.a_hop_time[0] = (i >> 16) & 0xff;
local->sparm.b4.a_hop_time[1] = (i >> 8) & 0xff;
local->sparm.b4.a_beacon_period[0] = 0;
local->sparm.b4.a_beacon_period[1] =
((beacon_period / hop_dwell) - 1) & 0xff;
local->sparm.b4.a_curr_country_code = country;
local->sparm.b4.a_hop_pattern_length =
hop_pattern_length[(int)country] - 1;
if (bc) {
local->sparm.b4.a_ack_timeout = 0x50;
local->sparm.b4.a_sifs = 0x3f;
}
} else { /* Version 5 uses real kus values */
memcpy((UCHAR *) &local->sparm.b5, b5_default_startup_parms,
sizeof(struct b5_startup_params));
local->sparm.b5.a_hop_time[0] = (hop_dwell >> 8) & 0xff;
local->sparm.b5.a_hop_time[1] = hop_dwell & 0xff;
local->sparm.b5.a_beacon_period[0] =
(beacon_period >> 8) & 0xff;
local->sparm.b5.a_beacon_period[1] = beacon_period & 0xff;
if (psm)
local->sparm.b5.a_power_mgt_state = 1;
local->sparm.b5.a_curr_country_code = country;
local->sparm.b5.a_hop_pattern_length =
hop_pattern_length[(int)country];
}
local->sparm.b4.a_network_type = net_type & 0x01;
local->sparm.b4.a_acting_as_ap_status = TYPE_STA;
if (essid != NULL)
strncpy(local->sparm.b4.a_current_ess_id, essid, ESSID_SIZE);
} /* init_startup_params */
/*===========================================================================*/
static void verify_dl_startup(struct timer_list *t)
{
ray_dev_t *local = from_timer(local, t, timer);
struct ccs __iomem *pccs = ccs_base(local) + local->dl_param_ccs;
UCHAR status;
struct pcmcia_device *link = local->finder;
if (!(pcmcia_dev_present(link))) {
dev_dbg(&link->dev, "ray_cs verify_dl_startup - device not present\n");
return;
}
#if 0
{
int i;
printk(KERN_DEBUG
"verify_dl_startup parameters sent via ccs %d:\n",
local->dl_param_ccs);
for (i = 0; i < sizeof(struct b5_startup_params); i++) {
printk(" %2x",
(unsigned int)readb(local->sram +
HOST_TO_ECF_BASE + i));
}
printk("\n");
}
#endif
status = readb(&pccs->buffer_status);
if (status != CCS_BUFFER_FREE) {
printk(KERN_INFO
"Download startup params failed. Status = %d\n",
status);
local->card_status = CARD_DL_PARAM_ERROR;
return;
}
if (local->sparm.b4.a_network_type == ADHOC)
start_net(&local->timer);
else
join_net(&local->timer);
} /* end verify_dl_startup */
/*===========================================================================*/
/* Command card to start a network */
static void start_net(struct timer_list *t)
{
ray_dev_t *local = from_timer(local, t, timer);
struct ccs __iomem *pccs;
int ccsindex;
struct pcmcia_device *link = local->finder;
if (!(pcmcia_dev_present(link))) {
dev_dbg(&link->dev, "ray_cs start_net - device not present\n");
return;
}
/* Fill in the CCS fields for the ECF */
if ((ccsindex = get_free_ccs(local)) < 0)
return;
pccs = ccs_base(local) + ccsindex;
writeb(CCS_START_NETWORK, &pccs->cmd);
writeb(0, &pccs->var.start_network.update_param);
/* Interrupt the firmware to process the command */
if (interrupt_ecf(local, ccsindex)) {
dev_dbg(&link->dev, "ray start net failed - card not ready for intr\n");
writeb(CCS_BUFFER_FREE, &(pccs++)->buffer_status);
return;
}
local->card_status = CARD_DOING_ACQ;
} /* end start_net */
/*===========================================================================*/
/* Command card to join a network */
static void join_net(struct timer_list *t)
{
ray_dev_t *local = from_timer(local, t, timer);
struct ccs __iomem *pccs;
int ccsindex;
struct pcmcia_device *link = local->finder;
if (!(pcmcia_dev_present(link))) {
dev_dbg(&link->dev, "ray_cs join_net - device not present\n");
return;
}
/* Fill in the CCS fields for the ECF */
if ((ccsindex = get_free_ccs(local)) < 0)
return;
pccs = ccs_base(local) + ccsindex;
writeb(CCS_JOIN_NETWORK, &pccs->cmd);
writeb(0, &pccs->var.join_network.update_param);
writeb(0, &pccs->var.join_network.net_initiated);
/* Interrupt the firmware to process the command */
if (interrupt_ecf(local, ccsindex)) {
dev_dbg(&link->dev, "ray join net failed - card not ready for intr\n");
writeb(CCS_BUFFER_FREE, &(pccs++)->buffer_status);
return;
}
local->card_status = CARD_DOING_ACQ;
}
static void ray_release(struct pcmcia_device *link)
{
struct net_device *dev = link->priv;
ray_dev_t *local = netdev_priv(dev);
dev_dbg(&link->dev, "ray_release\n");
del_timer(&local->timer);
iounmap(local->sram);
iounmap(local->rmem);
iounmap(local->amem);
pcmcia_disable_device(link);
dev_dbg(&link->dev, "ray_release ending\n");
}
static int ray_suspend(struct pcmcia_device *link)
{
struct net_device *dev = link->priv;
if (link->open)
netif_device_detach(dev);
return 0;
}
static int ray_resume(struct pcmcia_device *link)
{
struct net_device *dev = link->priv;
if (link->open) {
ray_reset(dev);
netif_device_attach(dev);
}
return 0;
}
/*===========================================================================*/
static int ray_dev_init(struct net_device *dev)
{
#ifdef RAY_IMMEDIATE_INIT
int i;
#endif /* RAY_IMMEDIATE_INIT */
ray_dev_t *local = netdev_priv(dev);
struct pcmcia_device *link = local->finder;
dev_dbg(&link->dev, "ray_dev_init(dev=%p)\n", dev);
if (!(pcmcia_dev_present(link))) {
dev_dbg(&link->dev, "ray_dev_init - device not present\n");
return -1;
}
#ifdef RAY_IMMEDIATE_INIT
/* Download startup parameters */
if ((i = dl_startup_params(dev)) < 0) {
printk(KERN_INFO "ray_dev_init dl_startup_params failed - "
"returns 0x%x\n", i);
return -1;
}
#else /* RAY_IMMEDIATE_INIT */
/* Postpone the card init so that we can still configure the card,
* for example using the Wireless Extensions. The init will happen
* in ray_open() - Jean II */
dev_dbg(&link->dev,
"ray_dev_init: postponing card init to ray_open() ; Status = %d\n",
local->card_status);
#endif /* RAY_IMMEDIATE_INIT */
/* copy mac and broadcast addresses to linux device */
memcpy(dev->dev_addr, &local->sparm.b4.a_mac_addr, ADDRLEN);
eth_broadcast_addr(dev->broadcast);
dev_dbg(&link->dev, "ray_dev_init ending\n");
return 0;
}
/*===========================================================================*/
static int ray_dev_config(struct net_device *dev, struct ifmap *map)
{
ray_dev_t *local = netdev_priv(dev);
struct pcmcia_device *link = local->finder;
/* Dummy routine to satisfy device structure */
dev_dbg(&link->dev, "ray_dev_config(dev=%p,ifmap=%p)\n", dev, map);
if (!(pcmcia_dev_present(link))) {
dev_dbg(&link->dev, "ray_dev_config - device not present\n");
return -1;
}
return 0;
}
/*===========================================================================*/
static netdev_tx_t ray_dev_start_xmit(struct sk_buff *skb,
struct net_device *dev)
{
ray_dev_t *local = netdev_priv(dev);
struct pcmcia_device *link = local->finder;
short length = skb->len;
if (!pcmcia_dev_present(link)) {
dev_dbg(&link->dev, "ray_dev_start_xmit - device not present\n");
dev_kfree_skb(skb);
return NETDEV_TX_OK;
}
dev_dbg(&link->dev, "ray_dev_start_xmit(skb=%p, dev=%p)\n", skb, dev);
if (local->authentication_state == NEED_TO_AUTH) {
dev_dbg(&link->dev, "ray_cs Sending authentication request.\n");
if (!build_auth_frame(local, local->auth_id, OPEN_AUTH_REQUEST)) {
local->authentication_state = AUTHENTICATED;
netif_stop_queue(dev);
return NETDEV_TX_BUSY;
}
}
if (length < ETH_ZLEN) {
if (skb_padto(skb, ETH_ZLEN))
return NETDEV_TX_OK;
length = ETH_ZLEN;
}
switch (ray_hw_xmit(skb->data, length, dev, DATA_TYPE)) {
case XMIT_NO_CCS:
case XMIT_NEED_AUTH:
netif_stop_queue(dev);
return NETDEV_TX_BUSY;
case XMIT_NO_INTR:
case XMIT_MSG_BAD:
case XMIT_OK:
default:
dev_kfree_skb(skb);
}
return NETDEV_TX_OK;
} /* ray_dev_start_xmit */
/*===========================================================================*/
static int ray_hw_xmit(unsigned char *data, int len, struct net_device *dev,
UCHAR msg_type)
{
ray_dev_t *local = netdev_priv(dev);
struct ccs __iomem *pccs;
int ccsindex;
int offset;
struct tx_msg __iomem *ptx; /* Address of xmit buffer in PC space */
short int addr; /* Address of xmit buffer in card space */
pr_debug("ray_hw_xmit(data=%p, len=%d, dev=%p)\n", data, len, dev);
if (len + TX_HEADER_LENGTH > TX_BUF_SIZE) {
printk(KERN_INFO "ray_hw_xmit packet too large: %d bytes\n",
len);
return XMIT_MSG_BAD;
}
switch (ccsindex = get_free_tx_ccs(local)) {
case ECCSBUSY:
pr_debug("ray_hw_xmit tx_ccs table busy\n");
fallthrough;
case ECCSFULL:
pr_debug("ray_hw_xmit No free tx ccs\n");
fallthrough;
case ECARDGONE:
netif_stop_queue(dev);
return XMIT_NO_CCS;
default:
break;
}
addr = TX_BUF_BASE + (ccsindex << 11);
if (msg_type == DATA_TYPE) {
local->stats.tx_bytes += len;
local->stats.tx_packets++;
}
ptx = local->sram + addr;
ray_build_header(local, ptx, msg_type, data);
if (translate) {
offset = translate_frame(local, ptx, data, len);
} else { /* Encapsulate frame */
/* TBD TIB length will move address of ptx->var */
memcpy_toio(&ptx->var, data, len);
offset = 0;
}
/* fill in the CCS */
pccs = ccs_base(local) + ccsindex;
len += TX_HEADER_LENGTH + offset;
writeb(CCS_TX_REQUEST, &pccs->cmd);
writeb(addr >> 8, &pccs->var.tx_request.tx_data_ptr[0]);
writeb(local->tib_length, &pccs->var.tx_request.tx_data_ptr[1]);
writeb(len >> 8, &pccs->var.tx_request.tx_data_length[0]);
writeb(len & 0xff, &pccs->var.tx_request.tx_data_length[1]);
/* TBD still need psm_cam? */
writeb(PSM_CAM, &pccs->var.tx_request.pow_sav_mode);
writeb(local->net_default_tx_rate, &pccs->var.tx_request.tx_rate);
writeb(0, &pccs->var.tx_request.antenna);
pr_debug("ray_hw_xmit default_tx_rate = 0x%x\n",
local->net_default_tx_rate);
/* Interrupt the firmware to process the command */
if (interrupt_ecf(local, ccsindex)) {
pr_debug("ray_hw_xmit failed - ECF not ready for intr\n");
/* TBD very inefficient to copy packet to buffer, and then not
send it, but the alternative is to queue the messages and that
won't be done for a while. Maybe set tbusy until a CCS is free?
*/
writeb(CCS_BUFFER_FREE, &pccs->buffer_status);
return XMIT_NO_INTR;
}
return XMIT_OK;
} /* end ray_hw_xmit */
/*===========================================================================*/
static int translate_frame(ray_dev_t *local, struct tx_msg __iomem *ptx,
unsigned char *data, int len)
{
__be16 proto = ((struct ethhdr *)data)->h_proto;
if (ntohs(proto) >= ETH_P_802_3_MIN) { /* DIX II ethernet frame */
pr_debug("ray_cs translate_frame DIX II\n");
/* Copy LLC header to card buffer */
memcpy_toio(&ptx->var, eth2_llc, sizeof(eth2_llc));
memcpy_toio(((void __iomem *)&ptx->var) + sizeof(eth2_llc),
(UCHAR *) &proto, 2);
if (proto == htons(ETH_P_AARP) || proto == htons(ETH_P_IPX)) {
/* This is the selective translation table, only 2 entries */
writeb(0xf8,
&((struct snaphdr_t __iomem *)ptx->var)->org[2]);
}
/* Copy body of ethernet packet without ethernet header */
memcpy_toio((void __iomem *)&ptx->var +
sizeof(struct snaphdr_t), data + ETH_HLEN,
len - ETH_HLEN);
return (int)sizeof(struct snaphdr_t) - ETH_HLEN;
} else { /* already 802 type, and proto is length */
pr_debug("ray_cs translate_frame 802\n");
if (proto == htons(0xffff)) { /* evil netware IPX 802.3 without LLC */
pr_debug("ray_cs translate_frame evil IPX\n");
memcpy_toio(&ptx->var, data + ETH_HLEN, len - ETH_HLEN);
return 0 - ETH_HLEN;
}
memcpy_toio(&ptx->var, data + ETH_HLEN, len - ETH_HLEN);
return 0 - ETH_HLEN;
}
/* TBD do other frame types */
} /* end translate_frame */
/*===========================================================================*/
static void ray_build_header(ray_dev_t *local, struct tx_msg __iomem *ptx,
UCHAR msg_type, unsigned char *data)
{
writeb(PROTOCOL_VER | msg_type, &ptx->mac.frame_ctl_1);
/*** IEEE 802.11 Address field assignments *************
TODS FROMDS addr_1 addr_2 addr_3 addr_4
Adhoc 0 0 dest src (terminal) BSSID N/A
AP to Terminal 0 1 dest AP(BSSID) source N/A
Terminal to AP 1 0 AP(BSSID) src (terminal) dest N/A
AP to AP 1 1 dest AP src AP dest source
*******************************************************/
if (local->net_type == ADHOC) {
writeb(0, &ptx->mac.frame_ctl_2);
memcpy_toio(ptx->mac.addr_1, ((struct ethhdr *)data)->h_dest,
ADDRLEN);
memcpy_toio(ptx->mac.addr_2, ((struct ethhdr *)data)->h_source,
ADDRLEN);
memcpy_toio(ptx->mac.addr_3, local->bss_id, ADDRLEN);
} else { /* infrastructure */
if (local->sparm.b4.a_acting_as_ap_status) {
writeb(FC2_FROM_DS, &ptx->mac.frame_ctl_2);
memcpy_toio(ptx->mac.addr_1,
((struct ethhdr *)data)->h_dest, ADDRLEN);
memcpy_toio(ptx->mac.addr_2, local->bss_id, 6);
memcpy_toio(ptx->mac.addr_3,
((struct ethhdr *)data)->h_source, ADDRLEN);
} else { /* Terminal */
writeb(FC2_TO_DS, &ptx->mac.frame_ctl_2);