/* this one removes one(!!) instance only */
static void
prism54_remove(struct pci_dev *pdev)
{
struct net_device *ndev = pci_get_drvdata(pdev);
islpci_private *priv = ndev ? netdev_priv(ndev) : NULL;
BUG_ON(!priv);
if (!__in_cleanup_module) {
printk(KERN_DEBUG "%s: hot unplug detected\n", ndev->name);
islpci_set_state(priv, PRV_STATE_OFF);
}
printk(KERN_DEBUG "%s: removing device\n", ndev->name);
unregister_netdev(ndev);
/* free the interrupt request */
if (islpci_get_state(priv) != PRV_STATE_OFF) {
isl38xx_disable_interrupts(priv->device_base);
islpci_set_state(priv, PRV_STATE_OFF);
/* This bellow causes a lockup at rmmod time. It might be
* because some interrupts still linger after rmmod time,
* see bug #17 */
/* pci_set_power_state(pdev, 3);*/ /* try to power-off */
}
free_irq(pdev->irq, priv);
/* free the PCI memory and unmap the remapped page */
islpci_free_memory(priv);
pci_set_drvdata(pdev, NULL);
free_netdev(ndev);
priv = NULL;
pci_clear_mwi(pdev);
pci_release_regions(pdev);
pci_disable_device(pdev);
}
static int
prism54_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct net_device *ndev = pci_get_drvdata(pdev);
islpci_private *priv = ndev ? netdev_priv(ndev) : NULL;
BUG_ON(!priv);
pci_save_state(pdev);
isl38xx_disable_interrupts(priv->device_base);
islpci_set_state(priv, PRV_STATE_OFF);
netif_stop_queue(ndev);
netif_device_detach(ndev);
return 0;
}
static void
prism54_remove(struct pci_dev *pdev)
{
struct net_device *ndev = pci_get_drvdata(pdev);
islpci_private *priv = ndev ? netdev_priv(ndev) : NULL;
BUG_ON(!priv);
if (!__in_cleanup_module) {
printk(KERN_DEBUG "%s: hot unplug detected\n", ndev->name);
islpci_set_state(priv, PRV_STATE_OFF);
}
printk(KERN_DEBUG "%s: removing device\n", ndev->name);
unregister_netdev(ndev);
if (islpci_get_state(priv) != PRV_STATE_OFF) {
isl38xx_disable_interrupts(priv->device_base);
islpci_set_state(priv, PRV_STATE_OFF);
}
free_irq(pdev->irq, priv);
islpci_free_memory(priv);
pci_set_drvdata(pdev, NULL);
free_netdev(ndev);
priv = NULL;
pci_clear_mwi(pdev);
pci_release_regions(pdev);
pci_disable_device(pdev);
}
static int
prism54_bring_down(islpci_private *priv)
{
void __iomem *device_base = priv->device_base;
u32 reg;
/* we are going to shutdown the device */
islpci_set_state(priv, PRV_STATE_PREBOOT);
/* disable all device interrupts in case they weren't */
isl38xx_disable_interrupts(priv->device_base);
/* For safety reasons, we may want to ensure that no DMA transfer is
* currently in progress by emptying the TX and RX queues. */
/* wait until interrupts have finished executing on other CPUs */
synchronize_irq(priv->pdev->irq);
reg = readl(device_base + ISL38XX_CTRL_STAT_REG);
reg &= ~(ISL38XX_CTRL_STAT_RESET | ISL38XX_CTRL_STAT_RAMBOOT);
writel(reg, device_base + ISL38XX_CTRL_STAT_REG);
wmb();
udelay(ISL38XX_WRITEIO_DELAY);
reg |= ISL38XX_CTRL_STAT_RESET;
writel(reg, device_base + ISL38XX_CTRL_STAT_REG);
wmb();
udelay(ISL38XX_WRITEIO_DELAY);
/* clear the Reset bit */
reg &= ~ISL38XX_CTRL_STAT_RESET;
writel(reg, device_base + ISL38XX_CTRL_STAT_REG);
wmb();
/* wait a while for the device to reset */
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(50*HZ/1000);
return 0;
}
static int
prism54_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct net_device *ndev = pci_get_drvdata(pdev);
islpci_private *priv = ndev ? netdev_priv(ndev) : NULL;
BUG_ON(!priv);
pci_save_state(pdev);
/* tell the device not to trigger interrupts for now... */
isl38xx_disable_interrupts(priv->device_base);
/* from now on assume the hardware was already powered down
and don't touch it anymore */
islpci_set_state(priv, PRV_STATE_OFF);
netif_stop_queue(ndev);
netif_device_detach(ndev);
return 0;
}
int
islpci_reset(islpci_private *priv, int reload_firmware)
{
isl38xx_control_block *cb = /* volatile not needed */
(isl38xx_control_block *) priv->control_block;
unsigned counter;
int rc;
if (reload_firmware)
islpci_set_state(priv, PRV_STATE_PREBOOT);
else
islpci_set_state(priv, PRV_STATE_POSTBOOT);
printk(KERN_DEBUG "%s: resetting device...\n", priv->ndev->name);
/* disable all device interrupts in case they weren't */
isl38xx_disable_interrupts(priv->device_base);
/* flush all management queues */
priv->index_mgmt_tx = 0;
priv->index_mgmt_rx = 0;
/* clear the indexes in the frame pointer */
for (counter = 0; counter < ISL38XX_CB_QCOUNT; counter++) {
cb->driver_curr_frag[counter] = cpu_to_le32(0);
cb->device_curr_frag[counter] = cpu_to_le32(0);
}
/* reset the mgmt receive queue */
for (counter = 0; counter < ISL38XX_CB_MGMT_QSIZE; counter++) {
isl38xx_fragment *frag = &cb->rx_data_mgmt[counter];
frag->size = cpu_to_le16(MGMT_FRAME_SIZE);
frag->flags = 0;
frag->address = cpu_to_le32(priv->mgmt_rx[counter].pci_addr);
}
for (counter = 0; counter < ISL38XX_CB_RX_QSIZE; counter++) {
cb->rx_data_low[counter].address =
cpu_to_le32((u32) priv->pci_map_rx_address[counter]);
}
/* since the receive queues are filled with empty fragments, now we can
* set the corresponding indexes in the Control Block */
priv->control_block->driver_curr_frag[ISL38XX_CB_RX_DATA_LQ] =
cpu_to_le32(ISL38XX_CB_RX_QSIZE);
priv->control_block->driver_curr_frag[ISL38XX_CB_RX_MGMTQ] =
cpu_to_le32(ISL38XX_CB_MGMT_QSIZE);
/* reset the remaining real index registers and full flags */
priv->free_data_rx = 0;
priv->free_data_tx = 0;
priv->data_low_tx_full = 0;
if (reload_firmware) { /* Should we load the firmware ? */
/* now that the data structures are cleaned up, upload
* firmware and reset interface */
rc = islpci_upload_fw(priv);
if (rc) {
printk(KERN_ERR "%s: islpci_reset: failure\n",
priv->ndev->name);
return rc;
}
}
/* finally reset interface */
rc = islpci_reset_if(priv);
if (rc)
printk(KERN_ERR "prism54: Your card/socket may be faulty, or IRQ line too busy :(\n");
return rc;
}
static int
prism54_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct net_device *ndev;
u8 latency_tmr;
u32 mem_addr;
islpci_private *priv;
int rvalue;
/* Enable the pci device */
if (pci_enable_device(pdev)) {
printk(KERN_ERR "%s: pci_enable_device() failed.\n", DRV_NAME);
return -ENODEV;
}
/* check whether the latency timer is set correctly */
pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &latency_tmr);
#if VERBOSE > SHOW_ERROR_MESSAGES
DEBUG(SHOW_TRACING, "latency timer: %x\n", latency_tmr);
#endif
if (latency_tmr < PCIDEVICE_LATENCY_TIMER_MIN) {
/* set the latency timer */
pci_write_config_byte(pdev, PCI_LATENCY_TIMER,
PCIDEVICE_LATENCY_TIMER_VAL);
}
/* enable PCI DMA */
if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
printk(KERN_ERR "%s: 32-bit PCI DMA not supported", DRV_NAME);
goto do_pci_disable_device;
}
/* 0x40 is the programmable timer to configure the response timeout (TRDY_TIMEOUT)
* 0x41 is the programmable timer to configure the retry timeout (RETRY_TIMEOUT)
* The RETRY_TIMEOUT is used to set the number of retries that the core, as a
* Master, will perform before abandoning a cycle. The default value for
* RETRY_TIMEOUT is 0x80, which far exceeds the PCI 2.1 requirement for new
* devices. A write of zero to the RETRY_TIMEOUT register disables this
* function to allow use with any non-compliant legacy devices that may
* execute more retries.
*
* Writing zero to both these two registers will disable both timeouts and
* *can* solve problems caused by devices that are slow to respond.
* Make this configurable - MSW
*/
if ( init_pcitm >= 0 ) {
pci_write_config_byte(pdev, 0x40, (u8)init_pcitm);
pci_write_config_byte(pdev, 0x41, (u8)init_pcitm);
} else {
printk(KERN_INFO "PCI TRDY/RETRY unchanged\n");
}
/* request the pci device I/O regions */
rvalue = pci_request_regions(pdev, DRV_NAME);
if (rvalue) {
printk(KERN_ERR "%s: pci_request_regions failure (rc=%d)\n",
DRV_NAME, rvalue);
goto do_pci_disable_device;
}
/* check if the memory window is indeed set */
rvalue = pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &mem_addr);
if (rvalue || !mem_addr) {
printk(KERN_ERR "%s: PCI device memory region not configured; fix your BIOS or CardBus bridge/drivers\n",
DRV_NAME);
goto do_pci_release_regions;
}
/* enable PCI bus-mastering */
DEBUG(SHOW_TRACING, "%s: pci_set_master(pdev)\n", DRV_NAME);
pci_set_master(pdev);
/* enable MWI */
pci_try_set_mwi(pdev);
/* setup the network device interface and its structure */
if (!(ndev = islpci_setup(pdev))) {
/* error configuring the driver as a network device */
printk(KERN_ERR "%s: could not configure network device\n",
DRV_NAME);
goto do_pci_clear_mwi;
}
priv = netdev_priv(ndev);
islpci_set_state(priv, PRV_STATE_PREBOOT); /* we are attempting to boot */
/* card is in unknown state yet, might have some interrupts pending */
isl38xx_disable_interrupts(priv->device_base);
/* request for the interrupt before uploading the firmware */
rvalue = request_irq(pdev->irq, islpci_interrupt,
IRQF_SHARED, ndev->name, priv);
if (rvalue) {
/* error, could not hook the handler to the irq */
printk(KERN_ERR "%s: could not install IRQ handler\n",
ndev->name);
goto do_unregister_netdev;
}
/* firmware upload is triggered in islpci_open */
return 0;
do_unregister_netdev:
unregister_netdev(ndev);
islpci_free_memory(priv);
pci_set_drvdata(pdev, NULL);
free_netdev(ndev);
priv = NULL;
do_pci_clear_mwi:
pci_clear_mwi(pdev);
do_pci_release_regions:
pci_release_regions(pdev);
do_pci_disable_device:
pci_disable_device(pdev);
return -EIO;
}
static int
prism54_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct net_device *ndev;
u8 latency_tmr;
u32 mem_addr;
islpci_private *priv;
int rvalue;
if (pci_enable_device(pdev)) {
printk(KERN_ERR "%s: pci_enable_device() failed.\n", DRV_NAME);
return -ENODEV;
}
pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &latency_tmr);
#if VERBOSE > SHOW_ERROR_MESSAGES
DEBUG(SHOW_TRACING, "latency timer: %x\n", latency_tmr);
#endif
if (latency_tmr < PCIDEVICE_LATENCY_TIMER_MIN) {
pci_write_config_byte(pdev, PCI_LATENCY_TIMER,
PCIDEVICE_LATENCY_TIMER_VAL);
}
if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
printk(KERN_ERR "%s: 32-bit PCI DMA not supported", DRV_NAME);
goto do_pci_disable_device;
}
if ( init_pcitm >= 0 ) {
pci_write_config_byte(pdev, 0x40, (u8)init_pcitm);
pci_write_config_byte(pdev, 0x41, (u8)init_pcitm);
} else {
printk(KERN_INFO "PCI TRDY/RETRY unchanged\n");
}
rvalue = pci_request_regions(pdev, DRV_NAME);
if (rvalue) {
printk(KERN_ERR "%s: pci_request_regions failure (rc=%d)\n",
DRV_NAME, rvalue);
goto do_pci_disable_device;
}
rvalue = pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &mem_addr);
if (rvalue || !mem_addr) {
printk(KERN_ERR "%s: PCI device memory region not configured; fix your BIOS or CardBus bridge/drivers\n",
DRV_NAME);
goto do_pci_release_regions;
}
DEBUG(SHOW_TRACING, "%s: pci_set_master(pdev)\n", DRV_NAME);
pci_set_master(pdev);
pci_try_set_mwi(pdev);
if (!(ndev = islpci_setup(pdev))) {
printk(KERN_ERR "%s: could not configure network device\n",
DRV_NAME);
goto do_pci_clear_mwi;
}
priv = netdev_priv(ndev);
islpci_set_state(priv, PRV_STATE_PREBOOT);
isl38xx_disable_interrupts(priv->device_base);
rvalue = request_irq(pdev->irq, &islpci_interrupt,
IRQF_SHARED, ndev->name, priv);
if (rvalue) {
printk(KERN_ERR "%s: could not install IRQ handler\n",
ndev->name);
goto do_unregister_netdev;
}
return 0;
do_unregister_netdev:
unregister_netdev(ndev);
islpci_free_memory(priv);
pci_set_drvdata(pdev, NULL);
free_netdev(ndev);
priv = NULL;
do_pci_clear_mwi:
pci_clear_mwi(pdev);
do_pci_release_regions:
pci_release_regions(pdev);
do_pci_disable_device:
pci_disable_device(pdev);
return -EIO;
}
