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ray_cs.c
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/*=============================================================================
*
* 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)
*
* This driver is free software; you can redistribute it and/or modify
* it under the terms of version 2 only of the GNU General Public License as
* published by the Free Software Foundation.
*
* It is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
* 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/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/proc_fs.h>
#include <linux/ptrace.h>
#include <linux/slab.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/ethtool.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>
#include <pcmcia/mem_op.h>
#include <net/ieee80211.h>
#include <linux/wireless.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/byteorder.h>
#include <asm/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"
/* 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.
*/
#ifdef RAYLINK_DEBUG
#define PCMCIA_DEBUG RAYLINK_DEBUG
#endif
#ifdef PCMCIA_DEBUG
static int ray_debug;
static int pc_debug = PCMCIA_DEBUG;
module_param(pc_debug, int, 0);
/* #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args); */
#define DEBUG(n, args...) if (pc_debug>(n)) printk(args);
#else
#define DEBUG(n, args...)
#endif
/** 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 struct ethtool_ops netdev_ethtool_ops;
static int ray_open(struct net_device *dev);
static int 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 int asc_to_int(char a);
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(u_long);
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(u_long);
/* Prototypes for interrpt time functions **********************************/
static irqreturn_t ray_interrupt (int reg, void *dev_id, struct pt_regs *regs);
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(u_long local);
static void start_net(u_long local);
/* void start_net(ray_dev_t *local); */
/*===========================================================================*/
/* 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 int translate = 1;
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;
/* A struct pcmcia_device structure has fields for most things that are needed
to keep track of a socket, but there will usually be some device
specific information that also needs to be kept track of. The
'priv' pointer in a struct pcmcia_device structure can be used to point to
a device-specific private data structure, like this.
*/
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, int, 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 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 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*/
};
/*===========================================================================*/
static unsigned char eth2_llc[] = {0xaa, 0xaa, 3, 0, 0, 0};
static 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 char rcsid[] = "Raylink/WebGear wireless LAN - Corey <Thomas corey@world.std.com>";
/*=============================================================================
ray_attach() creates an "instance" of the driver, allocating
local data structures for one device. The device is registered
with Card Services.
The dev_link structure is initialized, but we don't actually
configure the card at this point -- we wait until we receive a
card insertion event.
=============================================================================*/
static int ray_probe(struct pcmcia_device *p_dev)
{
ray_dev_t *local;
struct net_device *dev;
DEBUG(1, "ray_attach()\n");
/* Allocate space for private device-specific data */
dev = alloc_etherdev(sizeof(ray_dev_t));
if (!dev)
goto fail_alloc_dev;
local = dev->priv;
local->finder = p_dev;
/* The io structure describes IO port mapping. None used here */
p_dev->io.NumPorts1 = 0;
p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
p_dev->io.IOAddrLines = 5;
/* Interrupt setup. For PCMCIA, driver takes what's given */
p_dev->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
p_dev->irq.IRQInfo1 = IRQ_LEVEL_ID;
p_dev->irq.Handler = &ray_interrupt;
/* General socket configuration */
p_dev->conf.Attributes = CONF_ENABLE_IRQ;
p_dev->conf.IntType = INT_MEMORY_AND_IO;
p_dev->conf.ConfigIndex = 1;
p_dev->conf.Present = PRESENT_OPTION;
p_dev->priv = dev;
p_dev->irq.Instance = dev;
local->finder = p_dev;
local->card_status = CARD_INSERTED;
local->authentication_state = UNAUTHENTICATED;
local->num_multi = 0;
DEBUG(2,"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->hard_start_xmit = &ray_dev_start_xmit;
dev->set_config = &ray_dev_config;
dev->get_stats = &ray_get_stats;
SET_ETHTOOL_OPS(dev, &netdev_ethtool_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->set_multicast_list = &set_multicast_list;
DEBUG(2,"ray_cs ray_attach calling ether_setup.)\n");
SET_MODULE_OWNER(dev);
dev->init = &ray_dev_init;
dev->open = &ray_open;
dev->stop = &ray_dev_close;
netif_stop_queue(dev);
init_timer(&local->timer);
this_device = p_dev;
return ray_config(p_dev);
fail_alloc_dev:
return -ENOMEM;
} /* ray_attach */
/*=============================================================================
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 ray_detach(struct pcmcia_device *link)
{
struct net_device *dev;
ray_dev_t *local;
DEBUG(1, "ray_detach(0x%p)\n", link);
this_device = NULL;
dev = link->priv;
ray_release(link);
local = (ray_dev_t *)dev->priv;
del_timer(&local->timer);
if (link->priv) {
if (link->dev_node) unregister_netdev(dev);
free_netdev(dev);
}
DEBUG(2,"ray_cs ray_detach ending\n");
} /* ray_detach */
/*=============================================================================
ray_config() is run after a CARD_INSERTION event
is received, to configure the PCMCIA socket, and to make the
ethernet device available to the system.
=============================================================================*/
#define CS_CHECK(fn, ret) \
do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
#define MAX_TUPLE_SIZE 128
static int ray_config(struct pcmcia_device *link)
{
tuple_t tuple;
cisparse_t parse;
int last_fn = 0, last_ret = 0;
int i;
u_char buf[MAX_TUPLE_SIZE];
win_req_t req;
memreq_t mem;
struct net_device *dev = (struct net_device *)link->priv;
ray_dev_t *local = (ray_dev_t *)dev->priv;
DEBUG(1, "ray_config(0x%p)\n", link);
/* This reads the card's CONFIG tuple to find its configuration regs */
tuple.DesiredTuple = CISTPL_CONFIG;
CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
tuple.TupleData = buf;
tuple.TupleDataMax = MAX_TUPLE_SIZE;
tuple.TupleOffset = 0;
CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse));
link->conf.ConfigBase = parse.config.base;
link->conf.Present = parse.config.rmask[0];
/* Determine card type and firmware version */
buf[0] = buf[MAX_TUPLE_SIZE - 1] = 0;
tuple.DesiredTuple = CISTPL_VERS_1;
CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
tuple.TupleData = buf;
tuple.TupleDataMax = MAX_TUPLE_SIZE;
tuple.TupleOffset = 2;
CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
for (i=0; i<tuple.TupleDataLen - 4; i++)
if (buf[i] == 0) buf[i] = ' ';
printk(KERN_INFO "ray_cs Detected: %s\n",buf);
/* Now allocate an interrupt line. Note that this does not
actually assign a handler to the interrupt.
*/
CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
dev->irq = link->irq.AssignedIRQ;
/* This actually configures the PCMCIA socket -- setting up
the I/O windows and the interrupt mapping.
*/
CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
/*** Set up 32k window for shared memory (transmit and control) ************/
req.Attributes = WIN_DATA_WIDTH_8 | WIN_MEMORY_TYPE_CM | WIN_ENABLE | WIN_USE_WAIT;
req.Base = 0;
req.Size = 0x8000;
req.AccessSpeed = ray_mem_speed;
CS_CHECK(RequestWindow, pcmcia_request_window(&link, &req, &link->win));
mem.CardOffset = 0x0000; mem.Page = 0;
CS_CHECK(MapMemPage, pcmcia_map_mem_page(link->win, &mem));
local->sram = ioremap(req.Base,req.Size);
/*** Set up 16k window for shared memory (receive buffer) ***************/
req.Attributes = WIN_DATA_WIDTH_8 | WIN_MEMORY_TYPE_CM | WIN_ENABLE | WIN_USE_WAIT;
req.Base = 0;
req.Size = 0x4000;
req.AccessSpeed = ray_mem_speed;
CS_CHECK(RequestWindow, pcmcia_request_window(&link, &req, &local->rmem_handle));
mem.CardOffset = 0x8000; mem.Page = 0;
CS_CHECK(MapMemPage, pcmcia_map_mem_page(local->rmem_handle, &mem));
local->rmem = ioremap(req.Base,req.Size);
/*** Set up window for attribute memory ***********************************/
req.Attributes = WIN_DATA_WIDTH_8 | WIN_MEMORY_TYPE_AM | WIN_ENABLE | WIN_USE_WAIT;
req.Base = 0;
req.Size = 0x1000;
req.AccessSpeed = ray_mem_speed;
CS_CHECK(RequestWindow, pcmcia_request_window(&link, &req, &local->amem_handle));
mem.CardOffset = 0x0000; mem.Page = 0;
CS_CHECK(MapMemPage, pcmcia_map_mem_page(local->amem_handle, &mem));
local->amem = ioremap(req.Base,req.Size);
DEBUG(3,"ray_config sram=%p\n",local->sram);
DEBUG(3,"ray_config rmem=%p\n",local->rmem);
DEBUG(3,"ray_config amem=%p\n",local->amem);
if (ray_init(dev) < 0) {
ray_release(link);
return -ENODEV;
}
SET_NETDEV_DEV(dev, &handle_to_dev(link));
i = register_netdev(dev);
if (i != 0) {
printk("ray_config register_netdev() failed\n");
ray_release(link);
return i;
}
strcpy(local->node.dev_name, dev->name);
link->dev_node = &local->node;
printk(KERN_INFO "%s: RayLink, irq %d, hw_addr ",
dev->name, dev->irq);
for (i = 0; i < 6; i++)
printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
return 0;
cs_failed:
cs_error(link, last_fn, last_ret);
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;
UCHAR *p;
struct ccs __iomem *pccs;
ray_dev_t *local = (ray_dev_t *)dev->priv;
struct pcmcia_device *link = local->finder;
DEBUG(1, "ray_init(0x%p)\n", dev);
if (!(pcmcia_dev_present(link))) {
DEBUG(0,"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];
DEBUG(1,"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;
DEBUG(2,"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))
{
p = local->sparm.b4.a_mac_addr;
}
else
{
memcpy(&local->sparm.b4.a_mac_addr,
&local->startup_res.station_addr, ADDRLEN);
p = local->sparm.b4.a_mac_addr;
}
clear_interrupt(local); /* Clear any interrupt from the card */
local->card_status = CARD_AWAITING_PARAM;
DEBUG(2,"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 = (ray_dev_t *)dev->priv;
struct ccs __iomem *pccs;
struct pcmcia_device *link = local->finder;
DEBUG(1,"dl_startup_params entered\n");
if (!(pcmcia_dev_present(link))) {
DEBUG(2,"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);
DEBUG(2,"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.data = (long)local;
local->timer.function = &verify_dl_startup;
add_timer(&local->timer);
DEBUG(2,"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((UCHAR *)&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(u_long data)
{
ray_dev_t *local = (ray_dev_t *)data;
struct ccs __iomem *pccs = ccs_base(local) + local->dl_param_ccs;
UCHAR status;
struct pcmcia_device *link = local->finder;
if (!(pcmcia_dev_present(link))) {
DEBUG(2,"ray_cs verify_dl_startup - device not present\n");
return;
}
#ifdef PCMCIA_DEBUG
if (pc_debug > 2) {
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((u_long)local);
else
join_net((u_long)local);
return;
} /* end verify_dl_startup */
/*===========================================================================*/
/* Command card to start a network */
static void start_net(u_long data)
{
ray_dev_t *local = (ray_dev_t *)data;
struct ccs __iomem *pccs;
int ccsindex;
struct pcmcia_device *link = local->finder;
if (!(pcmcia_dev_present(link))) {
DEBUG(2,"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)) {
DEBUG(1,"ray start net failed - card not ready for intr\n");
writeb(CCS_BUFFER_FREE, &(pccs++)->buffer_status);
return;
}
local->card_status = CARD_DOING_ACQ;
return;
} /* end start_net */
/*===========================================================================*/
/* Command card to join a network */
static void join_net(u_long data)
{
ray_dev_t *local = (ray_dev_t *)data;
struct ccs __iomem *pccs;
int ccsindex;
struct pcmcia_device *link = local->finder;
if (!(pcmcia_dev_present(link))) {
DEBUG(2,"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)) {
DEBUG(1,"ray join net failed - card not ready for intr\n");
writeb(CCS_BUFFER_FREE, &(pccs++)->buffer_status);
return;
}
local->card_status = CARD_DOING_ACQ;
return;
}
/*============================================================================
After a card is removed, ray_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 ray_release(struct pcmcia_device *link)
{
struct net_device *dev = link->priv;
ray_dev_t *local = dev->priv;
int i;
DEBUG(1, "ray_release(0x%p)\n", link);
del_timer(&local->timer);
iounmap(local->sram);
iounmap(local->rmem);
iounmap(local->amem);
/* Do bother checking to see if these succeed or not */
i = pcmcia_release_window(local->amem_handle);
if ( i != CS_SUCCESS ) DEBUG(0,"ReleaseWindow(local->amem) ret = %x\n",i);
i = pcmcia_release_window(local->rmem_handle);
if ( i != CS_SUCCESS ) DEBUG(0,"ReleaseWindow(local->rmem) ret = %x\n",i);
pcmcia_disable_device(link);
DEBUG(2,"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;
}
/*===========================================================================*/
int ray_dev_init(struct net_device *dev)
{
#ifdef RAY_IMMEDIATE_INIT
int i;
#endif /* RAY_IMMEDIATE_INIT */
ray_dev_t *local = dev->priv;
struct pcmcia_device *link = local->finder;
DEBUG(1,"ray_dev_init(dev=%p)\n",dev);
if (!(pcmcia_dev_present(link))) {
DEBUG(2,"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 */
DEBUG(1,"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);
memset(dev->broadcast, 0xff, ETH_ALEN);
DEBUG(2,"ray_dev_init ending\n");
return 0;
}
/*===========================================================================*/
static int ray_dev_config(struct net_device *dev, struct ifmap *map)
{
ray_dev_t *local = dev->priv;
struct pcmcia_device *link = local->finder;
/* Dummy routine to satisfy device structure */
DEBUG(1,"ray_dev_config(dev=%p,ifmap=%p)\n",dev,map);
if (!(pcmcia_dev_present(link))) {
DEBUG(2,"ray_dev_config - device not present\n");
return -1;
}
return 0;
}
/*===========================================================================*/
static int ray_dev_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
ray_dev_t *local = dev->priv;
struct pcmcia_device *link = local->finder;
short length = skb->len;
if (!(pcmcia_dev_present(link))) {
DEBUG(2,"ray_dev_start_xmit - device not present\n");
return -1;
}
DEBUG(3,"ray_dev_start_xmit(skb=%p, dev=%p)\n",skb,dev);
if (local->authentication_state == NEED_TO_AUTH) {
DEBUG(0,"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 1;
}
}
if (length < ETH_ZLEN)
{
if (skb_padto(skb, ETH_ZLEN))
return 0;
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 1;
case XMIT_NO_INTR:
case XMIT_MSG_BAD:
case XMIT_OK:
default:
dev->trans_start = jiffies;
dev_kfree_skb(skb);
return 0;
}
return 0;
} /* 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 = (ray_dev_t *)dev->priv;
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 */
DEBUG(3,"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:
DEBUG(2,"ray_hw_xmit tx_ccs table busy\n");
case ECCSFULL:
DEBUG(2,"ray_hw_xmit No free tx ccs\n");
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]);