--- /dev/null
+/* orinoco_pci.c
+ *
+ * Driver for Prism 2.5/3 devices that have a direct PCI interface
+ * (i.e. these are not PCMCIA cards in a PCMCIA-to-PCI bridge).
+ * The card contains only one PCI region, which contains all the usual
+ * hermes registers, as well as the COR register.
+ *
+ * Current maintainers are:
+ * Pavel Roskin <proski AT gnu.org>
+ * and David Gibson <hermes AT gibson.dropbear.id.au>
+ *
+ * Some of this code is borrowed from orinoco_plx.c
+ * Copyright (C) 2001 Daniel Barlow <dan AT telent.net>
+ * Some of this code is "inspired" by linux-wlan-ng-0.1.10, but nothing
+ * has been copied from it. linux-wlan-ng-0.1.10 is originally :
+ * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
+ * This file originally written by:
+ * Copyright (C) 2001 Jean Tourrilhes <jt AT hpl.hp.com>
+ * And is now maintained by:
+ * (C) Copyright David Gibson, IBM Corp. 2002-2003.
+ *
+ * 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.
+ */
+
+#define DRIVER_NAME "orinoco_pci"
+#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 "orinoco.h"
+#include "orinoco_pci.h"
+
+/* Offset of the COR register of the PCI card */
+#define HERMES_PCI_COR (0x26)
+
+/* Bitmask to reset the card */
+#define HERMES_PCI_COR_MASK (0x0080)
+
+/* Magic timeouts for doing the reset.
+ * Those times are straight from wlan-ng, and it is claimed that they
+ * are necessary. Alan will kill me. Take your time and grab a coffee. */
+#define HERMES_PCI_COR_ONT (250) /* ms */
+#define HERMES_PCI_COR_OFFT (500) /* ms */
+#define HERMES_PCI_COR_BUSYT (500) /* ms */
+
+/*
+ * Do a soft reset of the card using the Configuration Option Register
+ * We need this to get going...
+ * This is the part of the code that is strongly inspired from wlan-ng
+ *
+ * Note : This code is done with irq enabled. This mean that many
+ * interrupts will occur while we are there. This is why we use the
+ * jiffies to regulate time instead of a straight mdelay(). Usually we
+ * need only around 245 iteration of the loop to do 250 ms delay.
+ *
+ * Note bis : Don't try to access HERMES_CMD during the reset phase.
+ * It just won't work !
+ */
+static int orinoco_pci_cor_reset(struct orinoco_private *priv)
+{
+ struct hermes *hw = &priv->hw;
+ unsigned long timeout;
+ u16 reg;
+
+ /* Assert the reset until the card notices */
+ hermes_write_regn(hw, PCI_COR, HERMES_PCI_COR_MASK);
+ mdelay(HERMES_PCI_COR_ONT);
+
+ /* Give time for the card to recover from this hard effort */
+ hermes_write_regn(hw, PCI_COR, 0x0000);
+ mdelay(HERMES_PCI_COR_OFFT);
+
+ /* The card is ready when it's no longer busy */
+ timeout = jiffies + msecs_to_jiffies(HERMES_PCI_COR_BUSYT);
+ 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_pci_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;
+
+ 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;
+ }
+
+ hermes_io = pci_iomap(pdev, 0, 0);
+ if (!hermes_io) {
+ printk(KERN_ERR PFX "Cannot remap chipset registers\n");
+ err = -EIO;
+ goto fail_map_hermes;
+ }
+
+ /* Allocate network device */
+ priv = alloc_orinocodev(sizeof(*card), &pdev->dev,
+ orinoco_pci_cor_reset, NULL);
+ if (!priv) {
+ printk(KERN_ERR PFX "Cannot allocate network device\n");
+ err = -ENOMEM;
+ goto fail_alloc;
+ }
+
+ card = priv->card;
+
+ hermes_struct_init(&priv->hw, hermes_io, HERMES_32BIT_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_pci_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:
+ free_orinocodev(priv);
+
+ fail_alloc:
+ pci_iounmap(pdev, hermes_io);
+
+ fail_map_hermes:
+ pci_release_regions(pdev);
+
+ fail_resources:
+ pci_disable_device(pdev);
+
+ return err;
+}
+
+static void orinoco_pci_remove_one(struct pci_dev *pdev)
+{
+ struct orinoco_private *priv = pci_get_drvdata(pdev);
+
+ orinoco_if_del(priv);
+ free_irq(pdev->irq, priv);
+ free_orinocodev(priv);
+ pci_iounmap(pdev, priv->hw.iobase);
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+}
+
+static const struct pci_device_id orinoco_pci_id_table[] = {
+ /* Intersil Prism 3 */
+ {0x1260, 0x3872, PCI_ANY_ID, PCI_ANY_ID,},
+ /* Intersil Prism 2.5 */
+ {0x1260, 0x3873, PCI_ANY_ID, PCI_ANY_ID,},
+ /* Samsung MagicLAN SWL-2210P */
+ {0x167d, 0xa000, PCI_ANY_ID, PCI_ANY_ID,},
+ {0,},
+};
+
+MODULE_DEVICE_TABLE(pci, orinoco_pci_id_table);
+
+static struct pci_driver orinoco_pci_driver = {
+ .name = DRIVER_NAME,
+ .id_table = orinoco_pci_id_table,
+ .probe = orinoco_pci_init_one,
+ .remove = orinoco_pci_remove_one,
+ .suspend = orinoco_pci_suspend,
+ .resume = orinoco_pci_resume,
+};
+
+static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
+ " (Pavel Roskin <proski@gnu.org>,"
+ " David Gibson <hermes@gibson.dropbear.id.au> &"
+ " Jean Tourrilhes <jt@hpl.hp.com>)";
+MODULE_AUTHOR("Pavel Roskin <proski@gnu.org> &"
+ " David Gibson <hermes@gibson.dropbear.id.au>");
+MODULE_DESCRIPTION("Driver for wireless LAN cards using direct PCI interface");
+MODULE_LICENSE("Dual MPL/GPL");
+
+static int __init orinoco_pci_init(void)
+{
+ printk(KERN_DEBUG "%s\n", version);
+ return pci_register_driver(&orinoco_pci_driver);
+}
+
+static void __exit orinoco_pci_exit(void)
+{
+ pci_unregister_driver(&orinoco_pci_driver);
+}
+
+module_init(orinoco_pci_init);
+module_exit(orinoco_pci_exit);
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * tab-width: 8
+ * End:
+ */
Code Review / kvmfornfv.git / blobdiff