1 files changed, 266 insertions, 0 deletions
diff --git a/drivers/net/wireless/intersil/orinoco/orinoco_pci.c b/drivers/net/wireless/intersil/orinoco/orinoco_pci.c
new file mode 100644
index 0000000..4938a22
--- /dev/null
+++ b/drivers/net/wireless/intersil/orinoco/orinoco_pci.c
@@ -0,0 +1,266 @@
+/* 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_wiphy;
+	}
+
+	pci_set_drvdata(pdev, priv);
+
+	return 0;
+
+ fail_wiphy:
+	wiphy_unregister(priv_to_wiphy(priv));
+ 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);
+	wiphy_unregister(priv_to_wiphy(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:
+ */