/*
* Driver for 802.11b cards using RAM-loadable Symbol firmware, such as
* Symbol Wireless Networker LA4137, CompactFlash cards by Socket
* Communications and Intel PRO/Wireless 2011B.
*
* The driver implements Symbol firmware download. The rest is handled
* in hermes.c and main.c.
*
* Utilities for downloading the Symbol firmware are available at
* http://sourceforge.net/projects/orinoco/
*
* Copyright (C) 2002-2005 Pavel Roskin <proski@gnu.org>
* Portions based on orinoco_cs.c:
* Copyright (C) David Gibson, Linuxcare Australia
* Portions based on Spectrum24tDnld.c from original spectrum24 driver:
* Copyright (C) Symbol Technologies.
*
* See copyright notice in file main.c.
*/
#define DRIVER_NAME "spectrum_cs"
#define PFX DRIVER_NAME ": "
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>
#include "orinoco.h"
/********************************************************************/
/* Module stuff */
/********************************************************************/
MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
MODULE_DESCRIPTION("Driver for Symbol Spectrum24 Trilogy cards with firmware downloader");
MODULE_LICENSE("Dual MPL/GPL");
/* Module parameters */
/* Some D-Link cards have buggy CIS. They do work at 5v properly, but
* don't have any CIS entry for it. This workaround it... */
static int ignore_cis_vcc; /* = 0 */
module_param(ignore_cis_vcc, int, 0);
MODULE_PARM_DESC(ignore_cis_vcc, "Allow voltage mismatch between card and socket");
/********************************************************************/
/* Data structures */
/********************************************************************/
/* PCMCIA specific device information (goes in the card field of
* struct orinoco_private */
struct orinoco_pccard {
struct pcmcia_device *p_dev;
};
/********************************************************************/
/* Function prototypes */
/********************************************************************/
static int spectrum_cs_config(struct pcmcia_device *link);
static void spectrum_cs_release(struct pcmcia_device *link);
/* Constants for the CISREG_CCSR register */
#define HCR_RUN 0x07 /* run firmware after reset */
#define HCR_IDLE 0x0E /* don't run firmware after reset */
#define HCR_MEM16 0x10 /* memory width bit, should be preserved */
/*
* Reset the card using configuration registers COR and CCSR.
* If IDLE is 1, stop the firmware, so that it can be safely rewritten.
*/
static int
spectrum_reset(struct pcmcia_device *link, int idle)
{
int ret;
u8 save_cor;
u8 ccsr;
/* Doing it if hardware is gone is guaranteed crash */
if (!pcmcia_dev_present(link))
return -ENODEV;
/* Save original COR value */
ret = pcmcia_read_config_byte(link, CISREG_COR, &save_cor);
if (ret)
goto failed;
/* Soft-Reset card */
ret = pcmcia_write_config_byte(link, CISREG_COR,
(save_cor | COR_SOFT_RESET));
if (ret)
goto failed;
udelay(1000);
/* Read CCSR */
ret = pcmcia_read_config_byte(link, CISREG_CCSR, &ccsr);
if (ret)
goto failed;
/*
* Start or stop the firmware. Memory width bit should be
* preserved from the value we've just read.
*/
ccsr = (idle ? HCR_IDLE : HCR_RUN) | (ccsr & HCR_MEM16);
ret = pcmcia_write_config_byte(link, CISREG_CCSR, ccsr);
if (ret)
goto failed;
udelay(1000);
/* Restore original COR configuration index */
ret = pcmcia_write_config_byte(link, CISREG_COR,
(save_cor & ~COR_SOFT_RESET));
if (ret)
goto failed;
udelay(1000);
return 0;
failed:
return -ENODEV;
}
/********************************************************************/
/* Device methods */
/********************************************************************/
static int
spectrum_cs_hard_reset(struct orinoco_private *priv)
{
struct orinoco_pccard *card = priv->card;
struct pcmcia_device *link = card->p_dev;
/* Soft reset using COR and HCR */
spectrum_reset(link, 0);
return 0;
}
static int
spectrum_cs_stop_firmware(struct orinoco_private *priv, int idle)
{
struct orinoco_pccard *card = priv->card;
struct pcmcia_device *link = card->p_dev;
return spectrum_reset(link, idle);
}
/********************************************************************/
/* PCMCIA stuff */
/********************************************************************/
/*
* This 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
spectrum_cs_probe(struct pcmcia_device *link)
{
struct orinoco_private *priv;
struct orinoco_pccard *card;
priv = alloc_orinocodev(sizeof(*card), &link->dev,
spectrum_cs_hard_reset,
spectrum_cs_stop_firmware);
if (!priv)
return -ENOMEM;
card = priv->card;
/* Link both structures together */
card->p_dev = link;
link->priv = priv;
/* General socket configuration defaults can go here. In this
* client, we assume very little, and rely on the CIS for
* almost everything. In most clients, many details (i.e.,
* number, sizes, and attributes of IO windows) are fixed by
* the nature of the device, and can be hard-wired here. */
link->conf.Attributes = 0;
link->conf.IntType = INT_MEMORY_AND_IO;
return spectrum_cs_config(link);
} /* spectrum_cs_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 spectrum_cs_detach(struct pcmcia_device *link)
{
struct orinoco_private *priv = link->priv;
orinoco_if_del(priv);
spectrum_cs_release(link);
free_orinocodev(priv);
} /* spectrum_cs_detach */
/*
* spectrum_cs_config() is scheduled to run after a CARD_INSERTION
* event is received, to configure the PCMCIA socket, and to make the
* device available to the system.
*/
static int spectrum_cs_config_check(struct pcmcia_device *p_dev,
cistpl_cftable_entry_t *cfg,
cistpl_cftable_entry_t *dflt,
unsigned int vcc,
void *priv_data)
{
if (cfg->index == 0)
goto next_entry;
/* Use power settings for Vcc and Vpp if present */
/* Note that the CIS values need to be rescaled */
if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000) {
DEBUG(2, "%s: Vcc mismatch (vcc = %d, CIS = %d)\n",
__func__, vcc,
cfg->vcc.param[CISTPL_POWER_VNOM] / 10000);
if (!ignore_cis_vcc)
goto next_entry;
}
} else if (dflt->vcc.present & (1 << CISTPL_POWER_VNOM)) {
if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM] / 10000) {
DEBUG(2, "%s: Vcc mismatch (vcc = %d, CIS = %d)\n",
__func__, vcc,
dflt->vcc.param[CISTPL_POWER_VNOM] / 10000);
if (!ignore_cis_vcc)
goto next_entry;
}
}
if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
p_dev->conf.Vpp =
cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM))
p_dev->conf.Vpp =
dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000;
/* Do we need to allocate an interrupt? */
p_dev->conf.Attributes |= CONF_ENABLE_IRQ;
/* IO window settings */
p_dev->resource[0]->end = p_dev->resource[1]->end = 0;
if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK;
p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
p_dev->resource[0]->flags |=
pcmcia_io_cfg_data_width(io->flags);
p_dev->resource[0]->start = io->win[0].base;
p_dev->resource[0]->end = io->win[0].len;
if (io->nwin > 1) {
p_dev->resource[1]->flags = p_dev->resource[0]->flags;
p_dev->resource[1]->start = io->win[1].base;
p_dev->resource[1]->end = io->win[1].len;
}
/* This reserves IO space but doesn't actually enable it */
if (pcmcia_request_io(p_dev) != 0)
goto next_entry;
}
return 0;
next_entry:
pcmcia_disable_device(p_dev);
return -ENODEV;
};
static int
spectrum_cs_config(struct pcmcia_device *link)
{
struct orinoco_private *priv = link->priv;
hermes_t *hw = &priv->hw;
int ret;
void __iomem *mem;
/*
* In this loop, we scan the CIS for configuration table
* entries, each of which describes a valid card
* configuration, including voltage, IO window, memory window,
* and interrupt settings.
*
* We make no assumptions about the card to be configured: we
* use just the information available in the CIS. In an ideal
* world, this would work for any PCMCIA card, but it requires
* a complete and accurate CIS. In practice, a driver usually
* "knows" most of these things without consulting the CIS,
* and most client drivers will only use the CIS to fill in
* implementation-defined details.
*/
ret = pcmcia_loop_config(link, spectrum_cs_config_check, NULL);
if (ret) {
if (!ignore_cis_vcc)
printk(KERN_ERR PFX "GetNextTuple(): No matching "
"CIS configuration. Maybe you need the "
"ignore_cis_vcc=1 parameter.\n");
goto failed;
}
ret = pcmcia_request_irq(link, orinoco_interrupt);
if (ret)
goto failed;
/* We initialize the hermes structure before completing PCMCIA
* configuration just in case the interrupt handler gets
* called. */
mem = ioport_map(link->resource[0]->start,
resource_size(link->resource[0]));
if (!mem)
goto failed;
hermes_struct_init(hw, mem, HERMES_16BIT_REGSPACING);
hw->eeprom_pda = true;
/*
* This actually configures the PCMCIA socket -- setting up
* the I/O windows and the interrupt mapping, and putting the
* card and host interface into "Memory and IO" mode.
*/
ret = pcmcia_request_configuration(link, &link->conf);
if (ret)
goto failed;
/* Reset card */
if (spectrum_cs_hard_reset(priv) != 0)
goto failed;
/* Initialise the main driver */
if (orinoco_init(priv) != 0) {
printk(KERN_ERR PFX "orinoco_init() failed\n");
goto failed;
}
/* Register an interface with the stack */
if (orinoco_if_add(priv, link->resource[0]->start,
link->irq, NULL) != 0) {
printk(KERN_ERR PFX "orinoco_if_add() failed\n");
goto failed;
}
return 0;
failed:
spectrum_cs_release(link);
return -ENODEV;
} /* spectrum_cs_config */
/*
* After a card is removed, spectrum_cs_release() will unregister the
* device, and release the PCMCIA configuration. If the device is
* still open, this will be postponed until it is closed.
*/
static void
spectrum_cs_release(struct pcmcia_device *link)
{
struct orinoco_private *priv = link->priv;
unsigned long flags;
/* We're committed to taking the device away now, so mark the
* hardware as unavailable */
priv->hw.ops->lock_irqsave(&priv->lock, &flags);
priv->hw_unavailable++;
priv->hw.ops->unlock_irqrestore(&priv->lock, &flags);
pcmcia_disable_device(link);
if (priv->hw.iobase)
ioport_unmap(priv->hw.iobase);
} /* spectrum_cs_release */
static int
spectrum_cs_suspend(struct pcmcia_device *link)
{
struct orinoco_private *priv = link->priv;
int err = 0;
/* Mark the device as stopped, to block IO until later */
orinoco_down(priv);
return err;
}
static int
spectrum_cs_resume(struct pcmcia_device *link)
{
struct orinoco_private *priv = link->priv;
int err = orinoco_up(priv);
return err;
}
/********************************************************************/
/* Module initialization */
/********************************************************************/
/* Can't be declared "const" or the whole __initdata section will
* become const */
static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
" (Pavel Roskin <proski@gnu.org>,"
" David Gibson <hermes@gibson.dropbear.id.au>, et al)";
static struct pcmcia_device_id spectrum_cs_ids[] = {
PCMCIA_DEVICE_MANF_CARD(0x026c, 0x0001), /* Symbol Spectrum24 LA4137 */
PCMCIA_DEVICE_MANF_CARD(0x0104, 0x0001), /* Socket Communications CF */
PCMCIA_DEVICE_PROD_ID12("Intel", "PRO/Wireless LAN PC Card", 0x816cc815, 0x6fbf459a), /* 2011B, not 2011 */
PCMCIA_DEVICE_NULL,
};
MODULE_DEVICE_TABLE(pcmcia, spectrum_cs_ids);
static struct pcmcia_driver orinoco_driver = {
.owner = THIS_MODULE,
.drv = {
.name = DRIVER_NAME,
},
.probe = spectrum_cs_probe,
.remove = spectrum_cs_detach,
.suspend = spectrum_cs_suspend,
.resume = spectrum_cs_resume,
.id_table = spectrum_cs_ids,
};
static int __init
init_spectrum_cs(void)
{
printk(KERN_DEBUG "%s\n", version);
return pcmcia_register_driver(&orinoco_driver);
}
static void __exit
exit_spectrum_cs(void)
{
pcmcia_unregister_driver(&orinoco_driver);
}
module_init(init_spectrum_cs);
module_exit(exit_spectrum_cs);
