forked from Minki/linux
fb28ad3590
Acked-by: Marcel Holtmann <marcel@holtmann.org> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: David S. Miller <davem@davemloft.net>
508 lines
15 KiB
C
508 lines
15 KiB
C
/*
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* Driver for 802.11b cards using RAM-loadable Symbol firmware, such as
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* Symbol Wireless Networker LA4137, CompactFlash cards by Socket
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* Communications and Intel PRO/Wireless 2011B.
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*
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* The driver implements Symbol firmware download. The rest is handled
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* in hermes.c and orinoco.c.
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*
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* Utilities for downloading the Symbol firmware are available at
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* http://sourceforge.net/projects/orinoco/
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*
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* Copyright (C) 2002-2005 Pavel Roskin <proski@gnu.org>
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* Portions based on orinoco_cs.c:
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* Copyright (C) David Gibson, Linuxcare Australia
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* Portions based on Spectrum24tDnld.c from original spectrum24 driver:
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* Copyright (C) Symbol Technologies.
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*
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* See copyright notice in file orinoco.c.
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*/
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#define DRIVER_NAME "spectrum_cs"
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#define PFX DRIVER_NAME ": "
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <pcmcia/cs_types.h>
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#include <pcmcia/cs.h>
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#include <pcmcia/cistpl.h>
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#include <pcmcia/cisreg.h>
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#include <pcmcia/ds.h>
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#include "orinoco.h"
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/********************************************************************/
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/* Module stuff */
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/********************************************************************/
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MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
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MODULE_DESCRIPTION("Driver for Symbol Spectrum24 Trilogy cards with firmware downloader");
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MODULE_LICENSE("Dual MPL/GPL");
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/* Module parameters */
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/* Some D-Link cards have buggy CIS. They do work at 5v properly, but
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* don't have any CIS entry for it. This workaround it... */
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static int ignore_cis_vcc; /* = 0 */
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module_param(ignore_cis_vcc, int, 0);
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MODULE_PARM_DESC(ignore_cis_vcc, "Allow voltage mismatch between card and socket");
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/********************************************************************/
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/* Data structures */
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/********************************************************************/
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/* PCMCIA specific device information (goes in the card field of
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* struct orinoco_private */
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struct orinoco_pccard {
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struct pcmcia_device *p_dev;
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dev_node_t node;
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};
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/********************************************************************/
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/* Function prototypes */
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/********************************************************************/
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static int spectrum_cs_config(struct pcmcia_device *link);
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static void spectrum_cs_release(struct pcmcia_device *link);
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/* Constants for the CISREG_CCSR register */
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#define HCR_RUN 0x07 /* run firmware after reset */
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#define HCR_IDLE 0x0E /* don't run firmware after reset */
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#define HCR_MEM16 0x10 /* memory width bit, should be preserved */
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#define CS_CHECK(fn, ret) \
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do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
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/*
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* Reset the card using configuration registers COR and CCSR.
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* If IDLE is 1, stop the firmware, so that it can be safely rewritten.
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*/
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static int
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spectrum_reset(struct pcmcia_device *link, int idle)
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{
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int last_ret, last_fn;
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conf_reg_t reg;
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u_int save_cor;
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/* Doing it if hardware is gone is guaranteed crash */
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if (!pcmcia_dev_present(link))
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return -ENODEV;
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/* Save original COR value */
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reg.Function = 0;
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reg.Action = CS_READ;
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reg.Offset = CISREG_COR;
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CS_CHECK(AccessConfigurationRegister,
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pcmcia_access_configuration_register(link, ®));
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save_cor = reg.Value;
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/* Soft-Reset card */
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reg.Action = CS_WRITE;
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reg.Offset = CISREG_COR;
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reg.Value = (save_cor | COR_SOFT_RESET);
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CS_CHECK(AccessConfigurationRegister,
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pcmcia_access_configuration_register(link, ®));
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udelay(1000);
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/* Read CCSR */
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reg.Action = CS_READ;
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reg.Offset = CISREG_CCSR;
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CS_CHECK(AccessConfigurationRegister,
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pcmcia_access_configuration_register(link, ®));
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/*
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* Start or stop the firmware. Memory width bit should be
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* preserved from the value we've just read.
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*/
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reg.Action = CS_WRITE;
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reg.Offset = CISREG_CCSR;
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reg.Value = (idle ? HCR_IDLE : HCR_RUN) | (reg.Value & HCR_MEM16);
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CS_CHECK(AccessConfigurationRegister,
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pcmcia_access_configuration_register(link, ®));
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udelay(1000);
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/* Restore original COR configuration index */
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reg.Action = CS_WRITE;
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reg.Offset = CISREG_COR;
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reg.Value = (save_cor & ~COR_SOFT_RESET);
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CS_CHECK(AccessConfigurationRegister,
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pcmcia_access_configuration_register(link, ®));
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udelay(1000);
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return 0;
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cs_failed:
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cs_error(link, last_fn, last_ret);
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return -ENODEV;
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}
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/********************************************************************/
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/* Device methods */
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/********************************************************************/
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static int
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spectrum_cs_hard_reset(struct orinoco_private *priv)
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{
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struct orinoco_pccard *card = priv->card;
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struct pcmcia_device *link = card->p_dev;
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/* Soft reset using COR and HCR */
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spectrum_reset(link, 0);
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return 0;
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}
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static int
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spectrum_cs_stop_firmware(struct orinoco_private *priv, int idle)
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{
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struct orinoco_pccard *card = priv->card;
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struct pcmcia_device *link = card->p_dev;
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return spectrum_reset(link, idle);
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}
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/********************************************************************/
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/* PCMCIA stuff */
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/********************************************************************/
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/*
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* This creates an "instance" of the driver, allocating local data
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* structures for one device. The device is registered with Card
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* Services.
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*
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* The dev_link structure is initialized, but we don't actually
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* configure the card at this point -- we wait until we receive a card
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* insertion event. */
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static int
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spectrum_cs_probe(struct pcmcia_device *link)
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{
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struct net_device *dev;
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struct orinoco_private *priv;
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struct orinoco_pccard *card;
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dev = alloc_orinocodev(sizeof(*card), &handle_to_dev(link),
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spectrum_cs_hard_reset,
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spectrum_cs_stop_firmware);
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if (! dev)
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return -ENOMEM;
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priv = netdev_priv(dev);
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card = priv->card;
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/* Link both structures together */
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card->p_dev = link;
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link->priv = dev;
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/* Interrupt setup */
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link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING | IRQ_HANDLE_PRESENT;
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link->irq.IRQInfo1 = IRQ_LEVEL_ID;
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link->irq.Handler = orinoco_interrupt;
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link->irq.Instance = dev;
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/* General socket configuration defaults can go here. In this
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* client, we assume very little, and rely on the CIS for
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* almost everything. In most clients, many details (i.e.,
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* number, sizes, and attributes of IO windows) are fixed by
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* the nature of the device, and can be hard-wired here. */
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link->conf.Attributes = 0;
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link->conf.IntType = INT_MEMORY_AND_IO;
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return spectrum_cs_config(link);
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} /* spectrum_cs_attach */
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/*
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* This deletes a driver "instance". The device is de-registered with
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* Card Services. If it has been released, all local data structures
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* are freed. Otherwise, the structures will be freed when the device
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* is released.
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*/
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static void spectrum_cs_detach(struct pcmcia_device *link)
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{
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struct net_device *dev = link->priv;
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if (link->dev_node)
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unregister_netdev(dev);
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spectrum_cs_release(link);
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free_orinocodev(dev);
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} /* spectrum_cs_detach */
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/*
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* spectrum_cs_config() is scheduled to run after a CARD_INSERTION
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* event is received, to configure the PCMCIA socket, and to make the
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* device available to the system.
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*/
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static int spectrum_cs_config_check(struct pcmcia_device *p_dev,
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cistpl_cftable_entry_t *cfg,
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cistpl_cftable_entry_t *dflt,
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unsigned int vcc,
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void *priv_data)
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{
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if (cfg->index == 0)
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goto next_entry;
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/* Use power settings for Vcc and Vpp if present */
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/* Note that the CIS values need to be rescaled */
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if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
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if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000) {
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DEBUG(2, "spectrum_cs_config: Vcc mismatch (vcc = %d, CIS = %d)\n", vcc, cfg->vcc.param[CISTPL_POWER_VNOM] / 10000);
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if (!ignore_cis_vcc)
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goto next_entry;
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}
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} else if (dflt->vcc.present & (1 << CISTPL_POWER_VNOM)) {
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if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM] / 10000) {
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DEBUG(2, "spectrum_cs_config: Vcc mismatch (vcc = %d, CIS = %d)\n", vcc, dflt->vcc.param[CISTPL_POWER_VNOM] / 10000);
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if (!ignore_cis_vcc)
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goto next_entry;
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}
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}
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if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
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p_dev->conf.Vpp =
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cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
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else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM))
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p_dev->conf.Vpp =
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dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000;
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/* Do we need to allocate an interrupt? */
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p_dev->conf.Attributes |= CONF_ENABLE_IRQ;
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/* IO window settings */
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p_dev->io.NumPorts1 = p_dev->io.NumPorts2 = 0;
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if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
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cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
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p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
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if (!(io->flags & CISTPL_IO_8BIT))
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p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
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if (!(io->flags & CISTPL_IO_16BIT))
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p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
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p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
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p_dev->io.BasePort1 = io->win[0].base;
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p_dev->io.NumPorts1 = io->win[0].len;
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if (io->nwin > 1) {
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p_dev->io.Attributes2 = p_dev->io.Attributes1;
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p_dev->io.BasePort2 = io->win[1].base;
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p_dev->io.NumPorts2 = io->win[1].len;
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}
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/* This reserves IO space but doesn't actually enable it */
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if (pcmcia_request_io(p_dev, &p_dev->io) != 0)
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goto next_entry;
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}
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return 0;
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next_entry:
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pcmcia_disable_device(p_dev);
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return -ENODEV;
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};
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static int
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spectrum_cs_config(struct pcmcia_device *link)
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{
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struct net_device *dev = link->priv;
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struct orinoco_private *priv = netdev_priv(dev);
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struct orinoco_pccard *card = priv->card;
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hermes_t *hw = &priv->hw;
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int last_fn, last_ret;
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void __iomem *mem;
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/*
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* In this loop, we scan the CIS for configuration table
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* entries, each of which describes a valid card
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* configuration, including voltage, IO window, memory window,
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* and interrupt settings.
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*
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* We make no assumptions about the card to be configured: we
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* use just the information available in the CIS. In an ideal
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* world, this would work for any PCMCIA card, but it requires
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* a complete and accurate CIS. In practice, a driver usually
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* "knows" most of these things without consulting the CIS,
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* and most client drivers will only use the CIS to fill in
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* implementation-defined details.
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*/
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last_ret = pcmcia_loop_config(link, spectrum_cs_config_check, NULL);
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if (last_ret) {
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if (!ignore_cis_vcc)
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printk(KERN_ERR PFX "GetNextTuple(): No matching "
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"CIS configuration. Maybe you need the "
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"ignore_cis_vcc=1 parameter.\n");
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cs_error(link, RequestIO, last_ret);
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goto failed;
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}
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/*
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* Allocate an interrupt line. Note that this does not assign
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* a handler to the interrupt, unless the 'Handler' member of
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* the irq structure is initialized.
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*/
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CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
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/* We initialize the hermes structure before completing PCMCIA
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* configuration just in case the interrupt handler gets
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* called. */
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mem = ioport_map(link->io.BasePort1, link->io.NumPorts1);
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if (!mem)
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goto cs_failed;
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hermes_struct_init(hw, mem, HERMES_16BIT_REGSPACING);
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/*
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* This actually configures the PCMCIA socket -- setting up
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* the I/O windows and the interrupt mapping, and putting the
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* card and host interface into "Memory and IO" mode.
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*/
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CS_CHECK(RequestConfiguration,
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pcmcia_request_configuration(link, &link->conf));
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/* Ok, we have the configuration, prepare to register the netdev */
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dev->base_addr = link->io.BasePort1;
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dev->irq = link->irq.AssignedIRQ;
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card->node.major = card->node.minor = 0;
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/* Reset card */
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if (spectrum_cs_hard_reset(priv) != 0) {
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goto failed;
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}
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SET_NETDEV_DEV(dev, &handle_to_dev(link));
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/* Tell the stack we exist */
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if (register_netdev(dev) != 0) {
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printk(KERN_ERR PFX "register_netdev() failed\n");
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goto failed;
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}
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/* At this point, the dev_node_t structure(s) needs to be
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* initialized and arranged in a linked list at link->dev_node. */
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strcpy(card->node.dev_name, dev->name);
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link->dev_node = &card->node; /* link->dev_node being non-NULL is also
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used to indicate that the
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net_device has been registered */
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/* Finally, report what we've done */
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printk(KERN_DEBUG "%s: " DRIVER_NAME " at %s, irq %d, io "
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"0x%04x-0x%04x\n", dev->name, dev_name(dev->dev.parent),
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link->irq.AssignedIRQ, link->io.BasePort1,
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link->io.BasePort1 + link->io.NumPorts1 - 1);
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return 0;
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cs_failed:
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cs_error(link, last_fn, last_ret);
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failed:
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spectrum_cs_release(link);
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return -ENODEV;
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} /* spectrum_cs_config */
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/*
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* After a card is removed, spectrum_cs_release() will unregister the
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* device, and release the PCMCIA configuration. If the device is
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* still open, this will be postponed until it is closed.
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*/
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static void
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spectrum_cs_release(struct pcmcia_device *link)
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{
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struct net_device *dev = link->priv;
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struct orinoco_private *priv = netdev_priv(dev);
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unsigned long flags;
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/* We're committed to taking the device away now, so mark the
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* hardware as unavailable */
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spin_lock_irqsave(&priv->lock, flags);
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priv->hw_unavailable++;
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spin_unlock_irqrestore(&priv->lock, flags);
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pcmcia_disable_device(link);
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if (priv->hw.iobase)
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ioport_unmap(priv->hw.iobase);
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} /* spectrum_cs_release */
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static int
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spectrum_cs_suspend(struct pcmcia_device *link)
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{
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struct net_device *dev = link->priv;
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struct orinoco_private *priv = netdev_priv(dev);
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unsigned long flags;
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int err = 0;
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/* Mark the device as stopped, to block IO until later */
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spin_lock_irqsave(&priv->lock, flags);
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err = __orinoco_down(dev);
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if (err)
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printk(KERN_WARNING "%s: Error %d downing interface\n",
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dev->name, err);
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netif_device_detach(dev);
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priv->hw_unavailable++;
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spin_unlock_irqrestore(&priv->lock, flags);
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return err;
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}
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static int
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spectrum_cs_resume(struct pcmcia_device *link)
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{
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struct net_device *dev = link->priv;
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struct orinoco_private *priv = netdev_priv(dev);
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netif_device_attach(dev);
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priv->hw_unavailable--;
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schedule_work(&priv->reset_work);
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return 0;
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}
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/********************************************************************/
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/* Module initialization */
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/********************************************************************/
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/* Can't be declared "const" or the whole __initdata section will
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* become const */
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static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
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" (Pavel Roskin <proski@gnu.org>,"
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" David Gibson <hermes@gibson.dropbear.id.au>, et al)";
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static struct pcmcia_device_id spectrum_cs_ids[] = {
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PCMCIA_DEVICE_MANF_CARD(0x026c, 0x0001), /* Symbol Spectrum24 LA4137 */
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PCMCIA_DEVICE_MANF_CARD(0x0104, 0x0001), /* Socket Communications CF */
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PCMCIA_DEVICE_PROD_ID12("Intel", "PRO/Wireless LAN PC Card", 0x816cc815, 0x6fbf459a), /* 2011B, not 2011 */
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PCMCIA_DEVICE_NULL,
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};
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MODULE_DEVICE_TABLE(pcmcia, spectrum_cs_ids);
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static struct pcmcia_driver orinoco_driver = {
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.owner = THIS_MODULE,
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.drv = {
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.name = DRIVER_NAME,
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},
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.probe = spectrum_cs_probe,
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.remove = spectrum_cs_detach,
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.suspend = spectrum_cs_suspend,
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.resume = spectrum_cs_resume,
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.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);
|