* 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 (as of 29 September 2003) are:
+ * Current maintainers are:
* Pavel Roskin <proski AT gnu.org>
* and David Gibson <hermes AT gibson.dropbear.id.au>
*
* 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.
-
- * Caution: this is experimental and probably buggy. For success and
- * failure reports for different cards and adaptors, see
- * orinoco_plx_pci_id_table near the end of the file. If you have a
- * card we don't have the PCI id for, and looks like it should work,
- * drop me mail with the id and "it works"/"it doesn't work".
- *
- * Note: if everything gets detected fine but it doesn't actually send
- * or receive packets, your first port of call should probably be to
- * try newer firmware in the card. Especially if you're doing Ad-Hoc
- * modes.
- *
- * The actual driving is done by orinoco.c, this is just resource
- * allocation stuff. The explanation below is courtesy of Ryan Niemi
- * on the linux-wlan-ng list at
- * http://archives.neohapsis.com/archives/dev/linux-wlan/2001-q1/0026.html
*
- * The PLX9052-based cards (WL11000 and several others) are a
- * different beast than the usual PCMCIA-based PRISM2 configuration
- * expected by wlan-ng. Here's the general details on how the WL11000
- * PCI adapter works:
+ * 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 memory space
+ * - One PCI memory address space, mapped to the PCMCIA attribute space
* (containing the CIS).
*
- * After identifying the I/O and memory space, you can read through
- * the memory space to confirm the CIS's device ID or manufacturer ID
- * to make sure it's the expected card. qKeep in mind that the PCMCIA
+ * 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
* 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, incase you have an unexpected
+ * 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
* 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).
- *
- * Hope this is enough info for someone to add PLX9052 support to the
- * wlan-ng card. In the case of the WL11000, the PCI ID's are
- * 0x1639/0x0200, with matching subsystem ID's. Other PLX9052-based
- * manufacturers other than Eumitcom (or on cards other than the
- * WL11000) may have different PCI ID's.
- *
- * If anyone needs any more specific info, let me know. I haven't had
- * time to implement support myself yet, and with the way things are
- * going, might not have time for a while..
*/
#define DRIVER_NAME "orinoco_plx"
#define PFX DRIVER_NAME ": "
-#include <linux/config.h>
-
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/ioport.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <asm/system.h>
-#include <linux/netdevice.h>
-#include <linux/if_arp.h>
-#include <linux/etherdevice.h>
-#include <linux/list.h>
+#include <linux/delay.h>
#include <linux/pci.h>
-#include <linux/fcntl.h>
-
#include <pcmcia/cisreg.h>
-#include "hermes.h"
#include "orinoco.h"
+#include "orinoco_pci.h"
-#define COR_OFFSET (0x3e0/2) /* COR attribute offset of Prism2 PC card */
+#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 */
-static const u16 cis_magic[] = {
- 0x0001, 0x0003, 0x0000, 0x0000, 0x00ff, 0x0017, 0x0004, 0x0067
-};
-
-static int orinoco_plx_init_one(struct pci_dev *pdev,
- const struct pci_device_id *ent)
+/*
+ * Do a soft reset of the card using the Configuration Option Register
+ */
+static int orinoco_plx_cor_reset(struct orinoco_private *priv)
{
- int err = 0;
- u16 *attr_mem = NULL;
- u32 reg, addr;
- struct orinoco_private *priv = NULL;
- unsigned long pccard_ioaddr = 0;
- unsigned long pccard_iolen = 0;
- struct net_device *dev = NULL;
- int i;
+ hermes_t *hw = &priv->hw;
+ struct orinoco_pci_card *card = priv->card;
+ unsigned long timeout;
+ u16 reg;
- err = pci_enable_device(pdev);
- if (err)
- return -EIO;
+ iowrite8(COR_VALUE | COR_RESET, card->attr_io + COR_OFFSET);
+ mdelay(1);
- /* Resource 2 is mapped to the PCMCIA space */
- attr_mem = ioremap(pci_resource_start(pdev, 2), PAGE_SIZE);
- if (! attr_mem)
- goto fail;
+ iowrite8(COR_VALUE, card->attr_io + COR_OFFSET);
+ mdelay(1);
- printk(KERN_DEBUG "orinoco_plx: CIS: ");
+ /* Just in case, wait more until the card is no longer busy */
+ timeout = jiffies + (PLX_RESET_TIME * HZ / 1000);
+ 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:", (int)attr_mem[i]);
+ printk("%02X:", ioread8(card->attr_io + (i << 1)));
}
printk("\n");
- /* Verify whether PC card is present */
+ /* Verify whether a supported PC card is present */
/* FIXME: we probably need to be smarted about this */
- if (memcmp(attr_mem, cis_magic, sizeof(cis_magic)) != 0) {
- printk(KERN_ERR "orinoco_plx: The CIS value of Prism2 PC card is invalid.\n");
- err = -EIO;
- goto fail;
+ 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;
+ }
}
- /* PCMCIA COR is the first byte following CIS: this write should
- * enable I/O mode and select level-triggered interrupts */
- attr_mem[COR_OFFSET] = COR_VALUE;
- mdelay(1);
- reg = attr_mem[COR_OFFSET];
- if (reg != COR_VALUE) {
- printk(KERN_ERR "orinoco_plx: Error setting COR value (reg=%x)\n", reg);
- goto fail;
- }
-
- iounmap(attr_mem);
- attr_mem = NULL; /* done with this now, it seems */
-
/* bjoern: We need to tell the card to enable interrupts, in
- case the serial eprom didn't do this already. See the
+ case the serial eprom didn't do this already. See the
PLX9052 data book, p8-1 and 8-24 for reference. */
- addr = pci_resource_start(pdev, 1);
- reg = 0;
- reg = inl(addr+PLX_INTCSR);
- if (reg & PLX_INTCSR_INTEN)
- printk(KERN_DEBUG "orinoco_plx: "
- "Local Interrupt already enabled\n");
- else {
- reg |= PLX_INTCSR_INTEN;
- outl(reg, addr+PLX_INTCSR);
- reg = inl(addr+PLX_INTCSR);
- if(!(reg & PLX_INTCSR_INTEN)) {
- printk(KERN_ERR "orinoco_plx: "
- "Couldn't enable Local Interrupts\n");
- goto fail;
+ 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;
}
}
- /* and 3 to the PCMCIA slot I/O address space */
- pccard_ioaddr = pci_resource_start(pdev, 3);
- pccard_iolen = pci_resource_len(pdev, 3);
- if (! request_region(pccard_ioaddr, pccard_iolen, DRIVER_NAME)) {
- printk(KERN_ERR "orinoco_plx: I/O resource 0x%lx @ 0x%lx busy\n",
- pccard_iolen, pccard_ioaddr);
- pccard_ioaddr = 0;
- err = -EBUSY;
- goto fail;
+ 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;
+ struct net_device *dev;
+ 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 */
- dev = alloc_orinocodev(0, NULL);
- if (! dev) {
+ dev = alloc_orinocodev(sizeof(*card), orinoco_plx_cor_reset);
+ if (!dev) {
+ printk(KERN_ERR PFX "Cannot allocate network device\n");
err = -ENOMEM;
- goto fail;
+ goto fail_alloc;
}
priv = netdev_priv(dev);
- dev->base_addr = pccard_ioaddr;
+ card = priv->card;
+ card->bridge_io = bridge_io;
+ card->attr_io = attr_io;
SET_MODULE_OWNER(dev);
SET_NETDEV_DEV(dev, &pdev->dev);
- printk(KERN_DEBUG PFX "Detected Orinoco/Prism2 PLX device "
- "at %s irq:%d, io addr:0x%lx\n", pci_name(pdev), pdev->irq,
- pccard_ioaddr);
-
- hermes_struct_init(&(priv->hw), dev->base_addr, HERMES_IO,
- HERMES_16BIT_REGSPACING);
- pci_set_drvdata(pdev, dev);
+ hermes_struct_init(&priv->hw, hermes_io, HERMES_16BIT_REGSPACING);
- err = request_irq(pdev->irq, orinoco_interrupt, SA_SHIRQ,
+ err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED,
dev->name, dev);
if (err) {
- printk(KERN_ERR PFX "Error allocating IRQ %d.\n", pdev->irq);
+ 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;
}
- dev->irq = pdev->irq;
err = register_netdev(dev);
- if (err)
+ if (err) {
+ printk(KERN_ERR PFX "Cannot register network device\n");
goto fail;
+ }
+
+ pci_set_drvdata(pdev, dev);
+ printk(KERN_DEBUG "%s: " DRIVER_NAME " at %s\n", dev->name,
+ pci_name(pdev));
return 0;
fail:
- printk(KERN_DEBUG PFX "init_one(), FAIL!\n");
+ free_irq(pdev->irq, dev);
- if (dev) {
- if (dev->irq)
- free_irq(dev->irq, dev);
-
- free_netdev(dev);
- }
+ fail_irq:
+ pci_set_drvdata(pdev, NULL);
+ free_orinocodev(dev);
+
+ fail_alloc:
+ pci_iounmap(pdev, hermes_io);
+
+ fail_map_hermes:
+ pci_iounmap(pdev, attr_io);
- if (pccard_ioaddr)
- release_region(pccard_ioaddr, pccard_iolen);
+ fail_map_attr:
+ pci_iounmap(pdev, bridge_io);
- if (attr_mem)
- iounmap(attr_mem);
+ fail_map_bridge:
+ pci_release_regions(pdev);
+ fail_resources:
pci_disable_device(pdev);
return err;
static void __devexit orinoco_plx_remove_one(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
-
- BUG_ON(! dev);
+ struct orinoco_private *priv = netdev_priv(dev);
+ struct orinoco_pci_card *card = priv->card;
unregister_netdev(dev);
-
- if (dev->irq)
- free_irq(dev->irq, dev);
-
+ free_irq(pdev->irq, dev);
pci_set_drvdata(pdev, NULL);
-
- free_netdev(dev);
-
- release_region(pci_resource_start(pdev, 3), pci_resource_len(pdev, 3));
-
+ free_orinocodev(dev);
+ 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 struct pci_device_id orinoco_plx_pci_id_table[] = {
+static 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? */
{0,},
};
-MODULE_DEVICE_TABLE(pci, orinoco_plx_pci_id_table);
+MODULE_DEVICE_TABLE(pci, orinoco_plx_id_table);
static struct pci_driver orinoco_plx_driver = {
.name = DRIVER_NAME,
- .id_table = orinoco_plx_pci_id_table,
+ .id_table = orinoco_plx_id_table,
.probe = orinoco_plx_init_one,
.remove = __devexit_p(orinoco_plx_remove_one),
+ .suspend = orinoco_pci_suspend,
+ .resume = orinoco_pci_resume,
};
static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
static int __init orinoco_plx_init(void)
{
printk(KERN_DEBUG "%s\n", version);
- return pci_module_init(&orinoco_plx_driver);
+ return pci_register_driver(&orinoco_plx_driver);
}
static void __exit orinoco_plx_exit(void)
{
pci_unregister_driver(&orinoco_plx_driver);
- current->state = TASK_UNINTERRUPTIBLE;
- schedule_timeout(HZ);
}
module_init(orinoco_plx_init);
git://git.onelab.eu / linux-2.6.git / blobdiff