mirror of
https://github.com/proski/madwifi
synced 2024-11-29 01:33:22 +03:00
11f13a1752
This value is roughly around the value that other devices are setting. The previous value appeared to be stupidly high. This may solve some interactivity problems and machine performance issues. git-svn-id: http://madwifi-project.org/svn/madwifi/trunk@2732 0192ed92-7a03-0410-a25b-9323aeb14dbd
416 lines
11 KiB
C
416 lines
11 KiB
C
/*-
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* Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
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* Copyright (c) 2004-2005 Atheros Communications, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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* redistribution must be conditioned upon including a substantially
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* similar Disclaimer requirement for further binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGES.
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*
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* $Id$
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*/
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#include "opt_ah.h"
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#ifndef EXPORT_SYMTAB
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#define EXPORT_SYMTAB
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#endif
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#ifndef AUTOCONF_INCLUDED
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#include <linux/config.h>
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#endif
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#include <linux/version.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/if.h>
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#include <linux/if_arp.h>
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#include <linux/netdevice.h>
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#include <linux/cache.h>
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#include <linux/pci.h>
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#include <asm/io.h>
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#include <asm/uaccess.h>
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#include "if_media.h"
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#include <net80211/ieee80211_var.h>
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#include "if_athvar.h"
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#include "ah_devid.h"
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#include "if_ath_pci.h"
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0))
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/*
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* PCI initialization uses Linux 2.4.x version and
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* older kernels do not support this
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*/
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#error Atheros PCI version requires at least Linux kernel version 2.4.0
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#endif /* kernel < 2.4.0 */
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struct ath_pci_softc {
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struct ath_softc aps_sc;
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#ifdef CONFIG_PM
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u32 aps_pmstate[16];
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#endif
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};
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/*
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* User a static table of PCI IDs for now. While this is the
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* "new way" to do things, we may want to switch back to having
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* the HAL check them by defining a probe method.
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*/
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static struct pci_device_id ath_pci_id_table[] __devinitdata = {
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{ 0x168c, 0x0007, PCI_ANY_ID, PCI_ANY_ID },
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{ 0x168c, 0x0012, PCI_ANY_ID, PCI_ANY_ID },
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{ 0x168c, 0x0013, PCI_ANY_ID, PCI_ANY_ID },
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{ 0xa727, 0x0013, PCI_ANY_ID, PCI_ANY_ID }, /* 3com */
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{ 0x10b7, 0x0013, PCI_ANY_ID, PCI_ANY_ID }, /* 3com 3CRDAG675 */
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{ 0x168c, 0x1014, PCI_ANY_ID, PCI_ANY_ID }, /* IBM minipci 5212 */
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{ 0x168c, 0x101a, PCI_ANY_ID, PCI_ANY_ID }, /* some Griffin-Lite */
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{ 0x168c, 0x0015, PCI_ANY_ID, PCI_ANY_ID },
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{ 0x168c, 0x0016, PCI_ANY_ID, PCI_ANY_ID },
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{ 0x168c, 0x0017, PCI_ANY_ID, PCI_ANY_ID },
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{ 0x168c, 0x0018, PCI_ANY_ID, PCI_ANY_ID },
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{ 0x168c, 0x0019, PCI_ANY_ID, PCI_ANY_ID },
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{ 0x168c, 0x001a, PCI_ANY_ID, PCI_ANY_ID },
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{ 0x168c, 0x001b, PCI_ANY_ID, PCI_ANY_ID },
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{ 0x168c, 0x001c, PCI_ANY_ID, PCI_ANY_ID }, /* PCI Express 5424 */
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{ 0x168c, 0x001d, PCI_ANY_ID, PCI_ANY_ID }, /* PCI Express ??? */
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{ 0x168c, 0x0023, PCI_ANY_ID, PCI_ANY_ID },
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{ 0x168c, 0x0024, PCI_ANY_ID, PCI_ANY_ID },
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{ 0x168c, 0x9013, PCI_ANY_ID, PCI_ANY_ID }, /* sonicwall */
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{ 0 }
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};
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static u16 ath_devidmap[][2] = {
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{ 0x9013, 0x0013 }
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};
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static int
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ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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{
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unsigned long phymem;
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void __iomem *mem;
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struct ath_pci_softc *sc;
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struct net_device *dev;
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const char *athname;
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u_int8_t csz;
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u32 val;
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u16 vdevice;
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int i;
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if (pci_enable_device(pdev))
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return -EIO;
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/* XXX 32-bit addressing only */
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if (pci_set_dma_mask(pdev, 0xffffffff)) {
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printk(KERN_ERR "ath_pci: 32-bit DMA not available\n");
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goto bad;
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}
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/*
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* Cache line size is used to size and align various
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* structures used to communicate with the hardware.
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*/
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pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz);
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if (csz == 0) {
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/*
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* Linux 2.4.18 (at least) writes the cache line size
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* register as a 16-bit wide register which is wrong.
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* We must have this setup properly for rx buffer
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* DMA to work so force a reasonable value here if it
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* comes up zero.
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*/
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csz = L1_CACHE_BYTES / sizeof(u_int32_t);
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pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz);
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}
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/*
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* The default setting of latency timer yields poor results,
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* set it to the value used by other systems. It may be worth
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* tweaking this setting more.
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*/
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pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x60);
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pci_set_master(pdev);
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/*
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* Disable the RETRY_TIMEOUT register (0x41) to keep
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* PCI Tx retries from interfering with C3 CPU state.
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*
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* Code taken from ipw2100 driver - jg
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*/
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pci_read_config_dword(pdev, 0x40, &val);
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if ((val & 0x0000ff00) != 0)
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pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
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phymem = pci_resource_start(pdev, 0);
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if (!request_mem_region(phymem, pci_resource_len(pdev, 0), "ath")) {
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printk(KERN_ERR "ath_pci: cannot reserve PCI memory region\n");
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goto bad;
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}
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mem = ioremap(phymem, pci_resource_len(pdev, 0));
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if (!mem) {
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printk(KERN_ERR "ath_pci: cannot remap PCI memory region\n") ;
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goto bad1;
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}
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dev = alloc_netdev(sizeof(struct ath_pci_softc), "wifi%d", ether_setup);
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if (dev == NULL) {
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printk(KERN_ERR "ath_pci: no memory for device state\n");
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goto bad2;
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}
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sc = dev->priv;
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sc->aps_sc.sc_dev = dev;
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sc->aps_sc.sc_iobase = mem;
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/*
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* Mark the device as detached to avoid processing
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* interrupts until setup is complete.
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*/
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sc->aps_sc.sc_invalid = 1;
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dev->irq = pdev->irq;
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/*
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* Don't leave arp type as ARPHRD_ETHER as this is no eth device
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*/
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dev->type = ARPHRD_IEEE80211;
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SET_MODULE_OWNER(dev);
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SET_NETDEV_DEV(dev, &pdev->dev);
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sc->aps_sc.sc_bdev = (void *) pdev;
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pci_set_drvdata(pdev, dev);
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
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if (request_irq(dev->irq, ath_intr, IRQF_SHARED, dev->name, dev)) {
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#else
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if (request_irq(dev->irq, ath_intr, SA_SHIRQ, dev->name, dev)) {
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#endif
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printk(KERN_WARNING "%s: request_irq failed\n", dev->name);
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goto bad3;
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}
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/* looking for device type from broken device id */
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vdevice = id->device;
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for (i = 0; i < (sizeof(ath_devidmap) / sizeof(ath_devidmap[0])); i++) {
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if (id->device == ath_devidmap[i][0]) {
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vdevice = ath_devidmap[i][1];
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break;
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}
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}
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/*
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* Auto-enable soft led processing for IBM cards and for
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* 5211 minipci cards. Users can also manually enable/disable
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* support with a sysctl.
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*/
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if (vdevice == AR5212_DEVID_IBM || vdevice == AR5211_DEVID) {
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sc->aps_sc.sc_softled = 1;
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sc->aps_sc.sc_ledpin = 0;
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}
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/* Enable softled on PIN1 on HP Compaq nc6xx, nc4000 & nx5000 laptops */
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if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ) {
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sc->aps_sc.sc_softled = 1;
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sc->aps_sc.sc_ledpin = 1;
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}
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if (ath_attach(vdevice, dev, NULL) != 0)
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goto bad4;
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athname = ath_hal_probe(id->vendor, vdevice);
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printk(KERN_INFO "%s: %s: mem=0x%lx, irq=%d\n",
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dev->name, athname ? athname : "Atheros ???", phymem, dev->irq);
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/* ready to process interrupts */
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sc->aps_sc.sc_invalid = 0;
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return 0;
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bad4:
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free_irq(dev->irq, dev);
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bad3:
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free_netdev(dev);
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bad2:
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iounmap(mem);
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bad1:
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release_mem_region(phymem, pci_resource_len(pdev, 0));
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bad:
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pci_disable_device(pdev);
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return (-ENODEV);
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}
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static void
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ath_pci_remove(struct pci_dev *pdev)
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{
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struct net_device *dev = pci_get_drvdata(pdev);
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struct ath_pci_softc *sc = dev->priv;
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ath_detach(dev);
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if (dev->irq)
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free_irq(dev->irq, dev);
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iounmap(sc->aps_sc.sc_iobase);
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release_mem_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
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pci_disable_device(pdev);
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free_netdev(dev);
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}
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#ifdef CONFIG_PM
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static int
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ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
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{
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struct net_device *dev = pci_get_drvdata(pdev);
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ath_suspend(dev);
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PCI_SAVE_STATE(pdev, ((struct ath_pci_softc *)dev->priv)->aps_pmstate);
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pci_disable_device(pdev);
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return pci_set_power_state(pdev, PCI_D3hot);
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}
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static int
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ath_pci_resume(struct pci_dev *pdev)
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{
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struct net_device *dev = pci_get_drvdata(pdev);
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u32 val;
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int err;
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err = pci_set_power_state(pdev, PCI_D0);
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if (err)
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return err;
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/* XXX - Should this return nonzero on fail? */
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PCI_RESTORE_STATE(pdev, ((struct ath_pci_softc *)dev->priv)->aps_pmstate);
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err = pci_enable_device(pdev);
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if (err)
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return err;
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pci_set_master(pdev);
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/*
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* Suspend/Resume resets the PCI configuration space, so we have to
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* re-disable the RETRY_TIMEOUT register (0x41) to keep
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* PCI Tx retries from interfering with C3 CPU state
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*
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* Code taken from ipw2100 driver - jg
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*/
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pci_read_config_dword(pdev, 0x40, &val);
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if ((val & 0x0000ff00) != 0)
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pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
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ath_resume(dev);
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return 0;
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}
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#endif /* CONFIG_PM */
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MODULE_DEVICE_TABLE(pci, ath_pci_id_table);
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static struct pci_driver ath_pci_drv_id = {
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.name = "ath_pci",
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.id_table = ath_pci_id_table,
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.probe = ath_pci_probe,
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.remove = ath_pci_remove,
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#ifdef CONFIG_PM
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.suspend = ath_pci_suspend,
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.resume = ath_pci_resume,
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#endif /* CONFIG_PM */
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/* Linux 2.4.6 has save_state and enable_wake that are not used here */
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};
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/*
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* Module glue.
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*/
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#include "version.h"
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#include "release.h"
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static char *version = ATH_PCI_VERSION " (" RELEASE_VERSION ")";
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static char *dev_info = "ath_pci";
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#include <linux/ethtool.h>
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int
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ath_ioctl_ethtool(struct ath_softc *sc, int cmd, void __user *addr)
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{
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struct ethtool_drvinfo info;
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if (cmd != ETHTOOL_GDRVINFO)
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return -EOPNOTSUPP;
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memset(&info, 0, sizeof(info));
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info.cmd = cmd;
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strncpy(info.driver, dev_info, sizeof(info.driver) - 1);
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strncpy(info.version, version, sizeof(info.version) - 1);
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,22)
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/* include the device name so later versions of kudzu DTRT */
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strncpy(info.bus_info, pci_name((struct pci_dev *)sc->sc_bdev),
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sizeof(info.bus_info) - 1);
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#endif
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return copy_to_user(addr, &info, sizeof(info)) ? -EFAULT : 0;
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}
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MODULE_AUTHOR("Errno Consulting, Sam Leffler");
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MODULE_DESCRIPTION("Support for Atheros 802.11 wireless LAN cards.");
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#ifdef MODULE_VERSION
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MODULE_VERSION(RELEASE_VERSION);
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#endif
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MODULE_SUPPORTED_DEVICE("Atheros WLAN cards");
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#ifdef MODULE_LICENSE
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MODULE_LICENSE("Dual BSD/GPL");
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#endif
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static int __init
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init_ath_pci(void)
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{
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printk(KERN_INFO "%s: %s\n", dev_info, version);
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if (pci_register_driver(&ath_pci_drv_id) < 0) {
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printk("ath_pci: No devices found, driver not installed.\n");
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return (-ENODEV);
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}
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ath_sysctl_register();
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return (0);
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}
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module_init(init_ath_pci);
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static void __exit
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exit_ath_pci(void)
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{
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ath_sysctl_unregister();
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pci_unregister_driver(&ath_pci_drv_id);
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printk(KERN_INFO "%s: driver unloaded\n", dev_info);
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}
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module_exit(exit_ath_pci);
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/* return bus cachesize in 4B word units */
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void
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bus_read_cachesize(struct ath_softc *sc, u_int8_t *csz)
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{
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pci_read_config_byte(sc->sc_bdev, PCI_CACHE_LINE_SIZE, csz);
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}
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