2005-04-16 22:20:36 +00:00
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/*
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* Copyright (C) 2002 Intersil Americas Inc.
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* Copyright (C) 2003 Herbert Valerio Riedel <hvr@gnu.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/delay.h>
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#include <linux/init.h> /* For __init, __exit */
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2006-03-28 09:56:48 +00:00
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#include <linux/dma-mapping.h>
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2005-04-16 22:20:36 +00:00
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#include "prismcompat.h"
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#include "islpci_dev.h"
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#include "islpci_mgt.h" /* for pc_debug */
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#include "isl_oid.h"
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MODULE_AUTHOR("[Intersil] R.Bastings and W.Termorshuizen, The prism54.org Development Team <prism54-devel@prism54.org>");
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MODULE_DESCRIPTION("The Prism54 802.11 Wireless LAN adapter");
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MODULE_LICENSE("GPL");
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static int init_pcitm = 0;
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module_param(init_pcitm, int, 0);
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/* In this order: vendor, device, subvendor, subdevice, class, class_mask,
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2006-10-08 04:38:15 +00:00
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* driver_data
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* If you have an update for this please contact prism54-devel@prism54.org
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2005-04-16 22:20:36 +00:00
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* The latest list can be found at http://prism54.org/supported_cards.php */
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static const struct pci_device_id prism54_id_tbl[] = {
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/* Intersil PRISM Duette/Prism GT Wireless LAN adapter */
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{
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0x1260, 0x3890,
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PCI_ANY_ID, PCI_ANY_ID,
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0, 0, 0
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},
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/* 3COM 3CRWE154G72 Wireless LAN adapter */
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{
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0x10b7, 0x6001,
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PCI_ANY_ID, PCI_ANY_ID,
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0, 0, 0
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},
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/* Intersil PRISM Indigo Wireless LAN adapter */
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{
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0x1260, 0x3877,
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PCI_ANY_ID, PCI_ANY_ID,
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0, 0, 0
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},
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/* Intersil PRISM Javelin/Xbow Wireless LAN adapter */
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{
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0x1260, 0x3886,
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PCI_ANY_ID, PCI_ANY_ID,
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0, 0, 0
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},
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/* End of list */
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{0,0,0,0,0,0,0}
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};
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/* register the device with the Hotplug facilities of the kernel */
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MODULE_DEVICE_TABLE(pci, prism54_id_tbl);
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static int prism54_probe(struct pci_dev *, const struct pci_device_id *);
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static void prism54_remove(struct pci_dev *);
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2005-04-16 22:25:25 +00:00
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static int prism54_suspend(struct pci_dev *, pm_message_t state);
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2005-04-16 22:20:36 +00:00
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static int prism54_resume(struct pci_dev *);
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static struct pci_driver prism54_driver = {
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.name = DRV_NAME,
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.id_table = prism54_id_tbl,
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.probe = prism54_probe,
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.remove = prism54_remove,
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.suspend = prism54_suspend,
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.resume = prism54_resume,
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};
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/******************************************************************************
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Module initialization functions
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******************************************************************************/
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2008-12-26 08:15:03 +00:00
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static int
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2005-04-16 22:20:36 +00:00
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prism54_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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{
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struct net_device *ndev;
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u8 latency_tmr;
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u32 mem_addr;
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islpci_private *priv;
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int rvalue;
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/* Enable the pci device */
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if (pci_enable_device(pdev)) {
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printk(KERN_ERR "%s: pci_enable_device() failed.\n", DRV_NAME);
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return -ENODEV;
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}
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/* check whether the latency timer is set correctly */
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pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &latency_tmr);
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#if VERBOSE > SHOW_ERROR_MESSAGES
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DEBUG(SHOW_TRACING, "latency timer: %x\n", latency_tmr);
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#endif
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if (latency_tmr < PCIDEVICE_LATENCY_TIMER_MIN) {
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/* set the latency timer */
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pci_write_config_byte(pdev, PCI_LATENCY_TIMER,
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PCIDEVICE_LATENCY_TIMER_VAL);
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}
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/* enable PCI DMA */
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2006-03-28 09:56:48 +00:00
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if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
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2005-04-16 22:20:36 +00:00
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printk(KERN_ERR "%s: 32-bit PCI DMA not supported", DRV_NAME);
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goto do_pci_disable_device;
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}
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/* 0x40 is the programmable timer to configure the response timeout (TRDY_TIMEOUT)
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* 0x41 is the programmable timer to configure the retry timeout (RETRY_TIMEOUT)
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2006-10-08 04:38:15 +00:00
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* The RETRY_TIMEOUT is used to set the number of retries that the core, as a
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* Master, will perform before abandoning a cycle. The default value for
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* RETRY_TIMEOUT is 0x80, which far exceeds the PCI 2.1 requirement for new
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* devices. A write of zero to the RETRY_TIMEOUT register disables this
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* function to allow use with any non-compliant legacy devices that may
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* execute more retries.
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2005-04-16 22:20:36 +00:00
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*
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2006-10-08 04:38:15 +00:00
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* Writing zero to both these two registers will disable both timeouts and
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* *can* solve problems caused by devices that are slow to respond.
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2005-04-16 22:20:36 +00:00
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* Make this configurable - MSW
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*/
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if ( init_pcitm >= 0 ) {
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pci_write_config_byte(pdev, 0x40, (u8)init_pcitm);
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pci_write_config_byte(pdev, 0x41, (u8)init_pcitm);
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} else {
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printk(KERN_INFO "PCI TRDY/RETRY unchanged\n");
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}
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/* request the pci device I/O regions */
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rvalue = pci_request_regions(pdev, DRV_NAME);
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if (rvalue) {
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printk(KERN_ERR "%s: pci_request_regions failure (rc=%d)\n",
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DRV_NAME, rvalue);
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goto do_pci_disable_device;
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}
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/* check if the memory window is indeed set */
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rvalue = pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &mem_addr);
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if (rvalue || !mem_addr) {
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printk(KERN_ERR "%s: PCI device memory region not configured; fix your BIOS or CardBus bridge/drivers\n",
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DRV_NAME);
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goto do_pci_release_regions;
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}
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/* enable PCI bus-mastering */
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DEBUG(SHOW_TRACING, "%s: pci_set_master(pdev)\n", DRV_NAME);
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pci_set_master(pdev);
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/* enable MWI */
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2007-07-09 18:55:54 +00:00
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pci_try_set_mwi(pdev);
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2005-04-16 22:20:36 +00:00
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/* setup the network device interface and its structure */
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if (!(ndev = islpci_setup(pdev))) {
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/* error configuring the driver as a network device */
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printk(KERN_ERR "%s: could not configure network device\n",
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DRV_NAME);
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2006-11-08 01:53:48 +00:00
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goto do_pci_clear_mwi;
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2005-04-16 22:20:36 +00:00
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}
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priv = netdev_priv(ndev);
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islpci_set_state(priv, PRV_STATE_PREBOOT); /* we are attempting to boot */
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/* card is in unknown state yet, might have some interrupts pending */
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isl38xx_disable_interrupts(priv->device_base);
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/* request for the interrupt before uploading the firmware */
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rvalue = request_irq(pdev->irq, &islpci_interrupt,
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2006-07-02 02:29:39 +00:00
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IRQF_SHARED, ndev->name, priv);
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2005-04-16 22:20:36 +00:00
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if (rvalue) {
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/* error, could not hook the handler to the irq */
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printk(KERN_ERR "%s: could not install IRQ handler\n",
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ndev->name);
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goto do_unregister_netdev;
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}
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/* firmware upload is triggered in islpci_open */
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return 0;
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do_unregister_netdev:
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unregister_netdev(ndev);
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islpci_free_memory(priv);
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pci_set_drvdata(pdev, NULL);
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free_netdev(ndev);
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priv = NULL;
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2006-11-08 01:53:48 +00:00
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do_pci_clear_mwi:
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pci_clear_mwi(pdev);
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2005-04-16 22:20:36 +00:00
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do_pci_release_regions:
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pci_release_regions(pdev);
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do_pci_disable_device:
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pci_disable_device(pdev);
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return -EIO;
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}
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/* set by cleanup_module */
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static volatile int __in_cleanup_module = 0;
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/* this one removes one(!!) instance only */
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2008-12-26 08:15:03 +00:00
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static void
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2005-04-16 22:20:36 +00:00
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prism54_remove(struct pci_dev *pdev)
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{
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struct net_device *ndev = pci_get_drvdata(pdev);
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islpci_private *priv = ndev ? netdev_priv(ndev) : NULL;
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BUG_ON(!priv);
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if (!__in_cleanup_module) {
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printk(KERN_DEBUG "%s: hot unplug detected\n", ndev->name);
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islpci_set_state(priv, PRV_STATE_OFF);
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}
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printk(KERN_DEBUG "%s: removing device\n", ndev->name);
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unregister_netdev(ndev);
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/* free the interrupt request */
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if (islpci_get_state(priv) != PRV_STATE_OFF) {
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isl38xx_disable_interrupts(priv->device_base);
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islpci_set_state(priv, PRV_STATE_OFF);
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/* This bellow causes a lockup at rmmod time. It might be
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2006-10-08 04:38:15 +00:00
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* because some interrupts still linger after rmmod time,
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2005-04-16 22:20:36 +00:00
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* see bug #17 */
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/* pci_set_power_state(pdev, 3);*/ /* try to power-off */
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}
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free_irq(pdev->irq, priv);
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/* free the PCI memory and unmap the remapped page */
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islpci_free_memory(priv);
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pci_set_drvdata(pdev, NULL);
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free_netdev(ndev);
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priv = NULL;
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2006-11-08 01:53:48 +00:00
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pci_clear_mwi(pdev);
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2005-04-16 22:20:36 +00:00
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pci_release_regions(pdev);
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pci_disable_device(pdev);
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}
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2008-12-26 08:15:03 +00:00
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static int
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2005-04-16 22:25:25 +00:00
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prism54_suspend(struct pci_dev *pdev, pm_message_t state)
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2005-04-16 22:20:36 +00:00
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{
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struct net_device *ndev = pci_get_drvdata(pdev);
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islpci_private *priv = ndev ? netdev_priv(ndev) : NULL;
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BUG_ON(!priv);
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pci_save_state(pdev);
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/* tell the device not to trigger interrupts for now... */
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isl38xx_disable_interrupts(priv->device_base);
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/* from now on assume the hardware was already powered down
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and don't touch it anymore */
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islpci_set_state(priv, PRV_STATE_OFF);
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netif_stop_queue(ndev);
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netif_device_detach(ndev);
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return 0;
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}
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2008-12-26 08:15:03 +00:00
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static int
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2005-04-16 22:20:36 +00:00
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prism54_resume(struct pci_dev *pdev)
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{
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struct net_device *ndev = pci_get_drvdata(pdev);
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islpci_private *priv = ndev ? netdev_priv(ndev) : NULL;
|
2006-11-08 01:53:48 +00:00
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int err;
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2005-04-16 22:20:36 +00:00
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2006-11-08 01:53:48 +00:00
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BUG_ON(!priv);
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2005-04-16 22:20:36 +00:00
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printk(KERN_NOTICE "%s: got resume request\n", ndev->name);
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2006-11-08 01:53:48 +00:00
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err = pci_enable_device(pdev);
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if (err) {
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printk(KERN_ERR "%s: pci_enable_device failed on resume\n",
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ndev->name);
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return err;
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}
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2005-04-16 22:20:36 +00:00
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pci_restore_state(pdev);
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/* alright let's go into the PREBOOT state */
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islpci_reset(priv, 1);
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netif_device_attach(ndev);
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netif_start_queue(ndev);
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return 0;
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}
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static int __init
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prism54_module_init(void)
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{
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printk(KERN_INFO "Loaded %s driver, version %s\n",
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DRV_NAME, DRV_VERSION);
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__bug_on_wrong_struct_sizes ();
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2006-08-19 21:48:59 +00:00
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return pci_register_driver(&prism54_driver);
|
2005-04-16 22:20:36 +00:00
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}
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/* by the time prism54_module_exit() terminates, as a postcondition
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* all instances will have been destroyed by calls to
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* prism54_remove() */
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static void __exit
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prism54_module_exit(void)
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{
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__in_cleanup_module = 1;
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pci_unregister_driver(&prism54_driver);
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printk(KERN_INFO "Unloaded %s driver\n", DRV_NAME);
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__in_cleanup_module = 0;
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}
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/* register entry points */
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module_init(prism54_module_init);
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module_exit(prism54_module_exit);
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/* EOF */
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