diff options
Diffstat (limited to 'drivers/net/wireless/intersil/orinoco/orinoco_plx.c')
| -rw-r--r-- | drivers/net/wireless/intersil/orinoco/orinoco_plx.c | 362 |
1 files changed, 0 insertions, 362 deletions
diff --git a/drivers/net/wireless/intersil/orinoco/orinoco_plx.c b/drivers/net/wireless/intersil/orinoco/orinoco_plx.c deleted file mode 100644 index 73e6ae124013..000000000000 --- a/drivers/net/wireless/intersil/orinoco/orinoco_plx.c +++ /dev/null @@ -1,362 +0,0 @@ -/* orinoco_plx.c - * - * Driver for Prism II devices which would usually be driven by orinoco_cs, - * but are connected to the PCI bus by a PLX9052. - * - * Current maintainers are: - * Pavel Roskin <proski AT gnu.org> - * and David Gibson <hermes AT gibson.dropbear.id.au> - * - * (C) Copyright David Gibson, IBM Corp. 2001-2003. - * 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. - * - * Here's the general details on how the PLX9052 adapter works: - * - * - Two PCI I/O address spaces, one 0x80 long which contains the - * PLX9052 registers, and one that's 0x40 long mapped to the PCMCIA - * slot I/O address space. - * - * - One PCI memory address space, mapped to the PCMCIA attribute space - * (containing the CIS). - * - * Using the later, you can read through the CIS data to make sure the - * card is compatible with the driver. Keep in mind that the PCMCIA - * spec specifies the CIS as the lower 8 bits of each word read from - * the CIS, so to read the bytes of the CIS, read every other byte - * (0,2,4,...). Passing that test, you need to enable the I/O address - * space on the PCMCIA card via the PCMCIA COR register. This is the - * first byte following the CIS. In my case (which may not have any - * relation to what's on the PRISM2 cards), COR was at offset 0x800 - * within the PCI memory space. Write 0x41 to the COR register to - * enable I/O mode and to select level triggered interrupts. To - * confirm you actually succeeded, read the COR register back and make - * sure it actually got set to 0x41, in case you have an unexpected - * card inserted. - * - * Following that, you can treat the second PCI I/O address space (the - * one that's not 0x80 in length) as the PCMCIA I/O space. - * - * Note that in the Eumitcom's source for their drivers, they register - * the interrupt as edge triggered when registering it with the - * Windows kernel. I don't recall how to register edge triggered on - * Linux (if it can be done at all). But in some experimentation, I - * don't see much operational difference between using either - * interrupt mode. Don't mess with the interrupt mode in the COR - * register though, as the PLX9052 wants level triggers with the way - * the serial EEPROM configures it on the WL11000. - * - * There's some other little quirks related to timing that I bumped - * into, but I don't recall right now. Also, there's two variants of - * the WL11000 I've seen, revision A1 and T2. These seem to differ - * slightly in the timings configured in the wait-state generator in - * the PLX9052. There have also been some comments from Eumitcom that - * cards shouldn't be hot swapped, apparently due to risk of cooking - * the PLX9052. I'm unsure why they believe this, as I can't see - * anything in the design that would really cause a problem, except - * for crashing drivers not written to expect it. And having developed - * drivers for the WL11000, I'd say it's quite tricky to write code - * that will successfully deal with a hot unplug. Very odd things - * happen on the I/O side of things. But anyway, be warned. Despite - * that, I've hot-swapped a number of times during debugging and - * driver development for various reasons (stuck WAIT# line after the - * radio card's firmware locks up). - */ - -#define DRIVER_NAME "orinoco_plx" -#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_OFFSET (0x3e0) /* COR attribute offset of Prism2 PC card */ -#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 PLX_RESET_TIME (500) /* milliseconds */ - -#define PLX_INTCSR 0x4c /* Interrupt Control & Status Register */ -#define PLX_INTCSR_INTEN (1 << 6) /* Interrupt Enable bit */ - -/* - * Do a soft reset of the card using the Configuration Option Register - */ -static int orinoco_plx_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->attr_io + COR_OFFSET); - mdelay(1); - - iowrite8(COR_VALUE, card->attr_io + COR_OFFSET); - mdelay(1); - - /* Just in case, wait more until the card is no longer busy */ - timeout = jiffies + msecs_to_jiffies(PLX_RESET_TIME); - 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_plx_hw_init(struct orinoco_pci_card *card) -{ - int i; - u32 csr_reg; - static const u8 cis_magic[] = { - 0x01, 0x03, 0x00, 0x00, 0xff, 0x17, 0x04, 0x67 - }; - - printk(KERN_DEBUG PFX "CIS: "); - for (i = 0; i < 16; i++) - printk("%02X:", ioread8(card->attr_io + (i << 1))); - printk("\n"); - - /* Verify whether a supported PC card is present */ - /* FIXME: we probably need to be smarted about this */ - for (i = 0; i < sizeof(cis_magic); i++) { - if (cis_magic[i] != ioread8(card->attr_io + (i << 1))) { - printk(KERN_ERR PFX "The CIS value of Prism2 PC " - "card is unexpected\n"); - return -ENODEV; - } - } - - /* bjoern: We need to tell the card to enable interrupts, in - case the serial eprom didn't do this already. See the - PLX9052 data book, p8-1 and 8-24 for reference. */ - csr_reg = ioread32(card->bridge_io + PLX_INTCSR); - if (!(csr_reg & PLX_INTCSR_INTEN)) { - csr_reg |= PLX_INTCSR_INTEN; - iowrite32(csr_reg, card->bridge_io + PLX_INTCSR); - csr_reg = ioread32(card->bridge_io + PLX_INTCSR); - if (!(csr_reg & PLX_INTCSR_INTEN)) { - printk(KERN_ERR PFX "Cannot enable interrupts\n"); - return -EIO; - } - } - - return 0; -} - -static int orinoco_plx_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, *attr_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; - } - - attr_io = pci_iomap(pdev, 2, 0); - if (!attr_io) { - printk(KERN_ERR PFX "Cannot map PCMCIA attributes\n"); - err = -EIO; - goto fail_map_attr; - } - - hermes_io = pci_iomap(pdev, 3, 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_plx_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; - card->attr_io = attr_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_plx_hw_init(card); - if (err) { - printk(KERN_ERR PFX "Hardware initialization failed\n"); - goto fail; - } - - err = orinoco_plx_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_iounmap(pdev, attr_io); - - fail_map_attr: - pci_iounmap(pdev, bridge_io); - - fail_map_bridge: - pci_release_regions(pdev); - - fail_resources: - pci_disable_device(pdev); - - return err; -} - -static void orinoco_plx_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); - wiphy_unregister(priv_to_wiphy(priv)); - free_irq(pdev->irq, priv); - free_orinocodev(priv); - pci_iounmap(pdev, priv->hw.iobase); - pci_iounmap(pdev, card->attr_io); - pci_iounmap(pdev, card->bridge_io); - pci_release_regions(pdev); - pci_disable_device(pdev); -} - -static const struct pci_device_id orinoco_plx_id_table[] = { - {0x111a, 0x1023, PCI_ANY_ID, PCI_ANY_ID,}, /* Siemens SpeedStream SS1023 */ - {0x1385, 0x4100, PCI_ANY_ID, PCI_ANY_ID,}, /* Netgear MA301 */ - {0x15e8, 0x0130, PCI_ANY_ID, PCI_ANY_ID,}, /* Correga - does this work? */ - {0x1638, 0x1100, PCI_ANY_ID, PCI_ANY_ID,}, /* SMC EZConnect SMC2602W, - Eumitcom PCI WL11000, - Addtron AWA-100 */ - {0x16ab, 0x1100, PCI_ANY_ID, PCI_ANY_ID,}, /* Global Sun Tech GL24110P */ - {0x16ab, 0x1101, PCI_ANY_ID, PCI_ANY_ID,}, /* Reported working, but unknown */ - {0x16ab, 0x1102, PCI_ANY_ID, PCI_ANY_ID,}, /* Linksys WDT11 */ - {0x16ec, 0x3685, PCI_ANY_ID, PCI_ANY_ID,}, /* USR 2415 */ - {0xec80, 0xec00, PCI_ANY_ID, PCI_ANY_ID,}, /* Belkin F5D6000 tested by - Brendan W. McAdams <rit AT jacked-in.org> */ - {0x10b7, 0x7770, PCI_ANY_ID, PCI_ANY_ID,}, /* 3Com AirConnect PCI tested by - Damien Persohn <damien AT persohn.net> */ - {0,}, -}; - -MODULE_DEVICE_TABLE(pci, orinoco_plx_id_table); - -static struct pci_driver orinoco_plx_driver = { - .name = DRIVER_NAME, - .id_table = orinoco_plx_id_table, - .probe = orinoco_plx_init_one, - .remove = orinoco_plx_remove_one, - .driver.pm = &orinoco_pci_pm_ops, -}; - -static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION - " (Pavel Roskin <proski@gnu.org>," - " David Gibson <hermes@gibson.dropbear.id.au>," - " Daniel Barlow <dan@telent.net>)"; -MODULE_AUTHOR("Daniel Barlow <dan@telent.net>"); -MODULE_DESCRIPTION("Driver for wireless LAN cards using the PLX9052 PCI bridge"); -MODULE_LICENSE("Dual MPL/GPL"); - -static int __init orinoco_plx_init(void) -{ - printk(KERN_DEBUG "%s\n", version); - return pci_register_driver(&orinoco_plx_driver); -} - -static void __exit orinoco_plx_exit(void) -{ - pci_unregister_driver(&orinoco_plx_driver); -} - -module_init(orinoco_plx_init); -module_exit(orinoco_plx_exit); |