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|
/* orinoco_tmd.c
*
* Driver for Prism II devices which would usually be driven by orinoco_cs,
* but are connected to the PCI bus by a TMD7160.
*
* Copyright (C) 2003 Joerg Dorchain <joerg AT dorchain.net>
* based heavily upon orinoco_plx.c Copyright (C) 2001 Daniel Barlow
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License
* at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and
* limitations under the License.
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU General Public License version 2 (the "GPL"), in
* which case the provisions of the GPL are applicable instead of the
* above. If you wish to allow the use of your version of this file
* only under the terms of the GPL and not to allow others to use your
* version of this file under the MPL, indicate your decision by
* deleting the provisions above and replace them with the notice and
* other provisions required by the GPL. If you do not delete the
* provisions above, a recipient may use your version of this file
* under either the MPL or the GPL.
*
* The actual driving is done by main.c, this is just resource
* allocation stuff.
*
* This driver is modeled after the orinoco_plx driver. The main
* difference is that the TMD chip has only IO port ranges and doesn't
* provide access to the PCMCIA attribute space.
*
* Pheecom sells cards with the TMD chip as "ASIC version"
*/
#define DRIVER_NAME "orinoco_tmd"
#define PFX DRIVER_NAME ": "
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <pcmcia/cisreg.h>
#include "orinoco.h"
#include "orinoco_pci.h"
#define COR_VALUE (COR_LEVEL_REQ | COR_FUNC_ENA) /* Enable PC card with interrupt in level trigger */
#define COR_RESET (0x80) /* reset bit in the COR register */
#define TMD_RESET_TIME (500) /* milliseconds */
/*
* Do a soft reset of the card using the Configuration Option Register
*/
static int orinoco_tmd_cor_reset(struct orinoco_private *priv)
{
struct hermes *hw = &priv->hw;
struct orinoco_pci_card *card = priv->card;
unsigned long timeout;
u16 reg;
iowrite8(COR_VALUE | COR_RESET, card->bridge_io);
mdelay(1);
iowrite8(COR_VALUE, card->bridge_io);
mdelay(1);
/* Just in case, wait more until the card is no longer busy */
timeout = jiffies + (TMD_RESET_TIME * HZ / 1000);
reg = hermes_read_regn(hw, CMD);
while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
mdelay(1);
reg = hermes_read_regn(hw, CMD);
}
/* Still busy? */
if (reg & HERMES_CMD_BUSY) {
printk(KERN_ERR PFX "Busy timeout\n");
return -ETIMEDOUT;
}
return 0;
}
static int orinoco_tmd_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
int err;
struct orinoco_private *priv;
struct orinoco_pci_card *card;
void __iomem *hermes_io, *bridge_io;
err = pci_enable_device(pdev);
if (err) {
printk(KERN_ERR PFX "Cannot enable PCI device\n");
return err;
}
err = pci_request_regions(pdev, DRIVER_NAME);
if (err) {
printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
goto fail_resources;
}
bridge_io = pci_iomap(pdev, 1, 0);
if (!bridge_io) {
printk(KERN_ERR PFX "Cannot map bridge registers\n");
err = -EIO;
goto fail_map_bridge;
}
hermes_io = pci_iomap(pdev, 2, 0);
if (!hermes_io) {
printk(KERN_ERR PFX "Cannot map chipset registers\n");
err = -EIO;
goto fail_map_hermes;
}
/* Allocate network device */
priv = alloc_orinocodev(sizeof(*card), &pdev->dev,
orinoco_tmd_cor_reset, NULL);
if (!priv) {
printk(KERN_ERR PFX "Cannot allocate network device\n");
err = -ENOMEM;
goto fail_alloc;
}
card = priv->card;
card->bridge_io = bridge_io;
hermes_struct_init(&priv->hw, hermes_io, HERMES_16BIT_REGSPACING);
err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED,
DRIVER_NAME, priv);
if (err) {
printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
err = -EBUSY;
goto fail_irq;
}
err = orinoco_tmd_cor_reset(priv);
if (err) {
printk(KERN_ERR PFX "Initial reset failed\n");
goto fail;
}
err = orinoco_init(priv);
if (err) {
printk(KERN_ERR PFX "orinoco_init() failed\n");
goto fail;
}
err = orinoco_if_add(priv, 0, 0, NULL);
if (err) {
printk(KERN_ERR PFX "orinoco_if_add() failed\n");
goto fail;
}
pci_set_drvdata(pdev, priv);
return 0;
fail:
free_irq(pdev->irq, priv);
fail_irq:
pci_set_drvdata(pdev, NULL);
free_orinocodev(priv);
fail_alloc:
pci_iounmap(pdev, hermes_io);
fail_map_hermes:
pci_iounmap(pdev, bridge_io);
fail_map_bridge:
pci_release_regions(pdev);
fail_resources:
pci_disable_device(pdev);
return err;
}
static void orinoco_tmd_remove_one(struct pci_dev *pdev)
{
struct orinoco_private *priv = pci_get_drvdata(pdev);
struct orinoco_pci_card *card = priv->card;
orinoco_if_del(priv);
free_irq(pdev->irq, priv);
pci_set_drvdata(pdev, NULL);
free_orinocodev(priv);
pci_iounmap(pdev, priv->hw.iobase);
pci_iounmap(pdev, card->bridge_io);
pci_release_regions(pdev);
pci_disable_device(pdev);
}
static DEFINE_PCI_DEVICE_TABLE(orinoco_tmd_id_table) = {
{0x15e8, 0x0131, PCI_ANY_ID, PCI_ANY_ID,}, /* NDC and OEMs, e.g. pheecom */
{0,},
};
MODULE_DEVICE_TABLE(pci, orinoco_tmd_id_table);
static struct pci_driver orinoco_tmd_driver = {
.name = DRIVER_NAME,
.id_table = orinoco_tmd_id_table,
.probe = orinoco_tmd_init_one,
.remove = orinoco_tmd_remove_one,
.suspend = orinoco_pci_suspend,
.resume = orinoco_pci_resume,
};
static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
" (Joerg Dorchain <joerg@dorchain.net>)";
MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
MODULE_DESCRIPTION("Driver for wireless LAN cards using the TMD7160 PCI bridge");
MODULE_LICENSE("Dual MPL/GPL");
static int __init orinoco_tmd_init(void)
{
printk(KERN_DEBUG "%s\n", version);
return pci_register_driver(&orinoco_tmd_driver);
}
static void __exit orinoco_tmd_exit(void)
{
pci_unregister_driver(&orinoco_tmd_driver);
}
module_init(orinoco_tmd_init);
module_exit(orinoco_tmd_exit);
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* tab-width: 8
* End:
*/
|
