#include "hermes.h"
#include "orinoco.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 const u8 cis_magic[] = {
+ 0x01, 0x03, 0x00, 0x00, 0xff, 0x17, 0x04, 0x67
};
+/* Orinoco PLX specific data */
+struct orinoco_plx_card {
+ void __iomem *attr_mem;
+};
+
+/*
+ * Do a soft reset of the card using the Configuration Option Register
+ */
+static int orinoco_plx_cor_reset(struct orinoco_private *priv)
+{
+ hermes_t *hw = &priv->hw;
+ struct orinoco_plx_card *card = priv->card;
+ u8 __iomem *attr_mem = card->attr_mem;
+ unsigned long timeout;
+ u16 reg;
+
+ writeb(COR_VALUE | COR_RESET, attr_mem + COR_OFFSET);
+ mdelay(1);
+
+ writeb(COR_VALUE, attr_mem + COR_OFFSET);
+ mdelay(1);
+
+ /* 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);
+ }
+
+ /* Did we timeout ? */
+ if (reg & HERMES_CMD_BUSY) {
+ printk(KERN_ERR PFX "Busy timeout\n");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+
static int orinoco_plx_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
int err = 0;
- u16 *attr_mem = NULL;
- u32 reg, addr;
+ u8 __iomem *attr_mem = NULL;
+ u32 csr_reg, plx_addr;
struct orinoco_private *priv = NULL;
+ struct orinoco_plx_card *card;
unsigned long pccard_ioaddr = 0;
unsigned long pccard_iolen = 0;
struct net_device *dev = NULL;
+ void __iomem *mem;
int i;
err = pci_enable_device(pdev);
- if (err)
- return -EIO;
-
- /* Resource 2 is mapped to the PCMCIA space */
- attr_mem = ioremap(pci_resource_start(pdev, 2), PAGE_SIZE);
- if (! attr_mem)
- goto fail;
-
- printk(KERN_DEBUG "orinoco_plx: CIS: ");
- for (i = 0; i < 16; i++) {
- printk("%02X:", (int)attr_mem[i]);
+ if (err) {
+ printk(KERN_ERR PFX "Cannot enable PCI device\n");
+ return err;
}
- printk("\n");
- /* Verify whether 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;
+ err = pci_request_regions(pdev, DRIVER_NAME);
+ if (err != 0) {
+ printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
+ goto fail_resources;
}
- /* 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 */
+ /* Resource 1 is mapped to PLX-specific registers */
+ plx_addr = pci_resource_start(pdev, 1);
- /* 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. */
- 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;
- }
+ /* Resource 2 is mapped to the PCMCIA attribute memory */
+ attr_mem = ioremap(pci_resource_start(pdev, 2),
+ pci_resource_len(pdev, 2));
+ if (!attr_mem) {
+ printk(KERN_ERR PFX "Cannot remap PCMCIA space\n");
+ goto fail_map_attr;
}
- /* and 3 to the PCMCIA slot I/O address space */
+ /* Resource 3 is mapped to the PCMCIA 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;
+
+ mem = pci_iomap(pdev, 3, 0);
+ if (!mem) {
+ err = -ENOMEM;
+ goto fail_map_io;
}
/* 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);
+ card = priv->card;
+ card->attr_mem = attr_mem;
dev->base_addr = pccard_ioaddr;
SET_MODULE_OWNER(dev);
SET_NETDEV_DEV(dev, &pdev->dev);
+ hermes_struct_init(&priv->hw, mem, HERMES_16BIT_REGSPACING);
+
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);
-
err = request_irq(pdev->irq, orinoco_interrupt, SA_SHIRQ,
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;
+ goto fail_irq;
}
dev->irq = pdev->irq;
+ /* 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 = inl(plx_addr + PLX_INTCSR);
+ if (!(csr_reg & PLX_INTCSR_INTEN)) {
+ csr_reg |= PLX_INTCSR_INTEN;
+ outl(csr_reg, plx_addr + PLX_INTCSR);
+ csr_reg = inl(plx_addr + PLX_INTCSR);
+ if (!(csr_reg & PLX_INTCSR_INTEN)) {
+ printk(KERN_ERR PFX "Cannot enable interrupts\n");
+ goto fail;
+ }
+ }
+
+ err = orinoco_plx_cor_reset(priv);
+ if (err) {
+ printk(KERN_ERR PFX "Initial reset failed\n");
+ goto fail;
+ }
+
+ printk(KERN_DEBUG PFX "CIS: ");
+ for (i = 0; i < 16; i++) {
+ printk("%02X:", readb(attr_mem + 2*i));
+ }
+ 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] != readb(attr_mem +2*i)) {
+ printk(KERN_ERR PFX "The CIS value of Prism2 PC "
+ "card is unexpected\n");
+ err = -EIO;
+ goto fail;
+ }
+ }
+
err = register_netdev(dev);
- if (err)
+ if (err) {
+ printk(KERN_ERR PFX "Cannot register network device\n");
goto fail;
+ }
+
+ pci_set_drvdata(pdev, dev);
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);
- if (pccard_ioaddr)
- release_region(pccard_ioaddr, pccard_iolen);
+ fail_alloc:
+ pci_iounmap(pdev, mem);
+
+ fail_map_io:
+ iounmap(attr_mem);
- if (attr_mem)
- iounmap(attr_mem);
+ fail_map_attr:
+ 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);
+ struct orinoco_private *priv = netdev_priv(dev);
+ struct orinoco_plx_card *card = priv->card;
+ u8 __iomem *attr_mem = card->attr_mem;
BUG_ON(! dev);
unregister_netdev(dev);
-
- if (dev->irq)
- free_irq(dev->irq, dev);
-
+ free_irq(dev->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);
+ iounmap(attr_mem);
+ pci_release_regions(pdev);
pci_disable_device(pdev);
}
static void __exit orinoco_plx_exit(void)
{
pci_unregister_driver(&orinoco_plx_driver);
- current->state = TASK_UNINTERRUPTIBLE;
- schedule_timeout(HZ);
+ ssleep(1);
}
module_init(orinoco_plx_init);
git://git.onelab.eu / linux-2.6.git / blobdiff