C++ pci_release_regions函数代码示例

static int __devinit pci200_pci_init_one(struct pci_dev *pdev,
					 const struct pci_device_id *ent)
{
	card_t *card;
	u32 __iomem *p;
	int i;
	u32 ramsize;
	u32 ramphys;		/* buffer memory base */
	u32 scaphys;		/* SCA memory base */
	u32 plxphys;		/* PLX registers memory base */

	i = pci_enable_device(pdev);
	if (i)
		return i;

	i = pci_request_regions(pdev, "PCI200SYN");
	if (i) {
		pci_disable_device(pdev);
		return i;
	}

	card = kzalloc(sizeof(card_t), GFP_KERNEL);
	if (card == NULL) {
		printk(KERN_ERR "pci200syn: unable to allocate memory\n");
		pci_release_regions(pdev);
		pci_disable_device(pdev);
		return -ENOBUFS;
	}
	pci_set_drvdata(pdev, card);
	card->ports[0].netdev = alloc_hdlcdev(&card->ports[0]);
	card->ports[1].netdev = alloc_hdlcdev(&card->ports[1]);
	if (!card->ports[0].netdev || !card->ports[1].netdev) {
		printk(KERN_ERR "pci200syn: unable to allocate memory\n");
		pci200_pci_remove_one(pdev);
		return -ENOMEM;
	}

	if (pci_resource_len(pdev, 0) != PCI200SYN_PLX_SIZE ||
	    pci_resource_len(pdev, 2) != PCI200SYN_SCA_SIZE ||
	    pci_resource_len(pdev, 3) < 16384) {
		printk(KERN_ERR "pci200syn: invalid card EEPROM parameters\n");
		pci200_pci_remove_one(pdev);
		return -EFAULT;
	}

	plxphys = pci_resource_start(pdev,0) & PCI_BASE_ADDRESS_MEM_MASK;
	card->plxbase = ioremap(plxphys, PCI200SYN_PLX_SIZE);

	scaphys = pci_resource_start(pdev,2) & PCI_BASE_ADDRESS_MEM_MASK;
	card->scabase = ioremap(scaphys, PCI200SYN_SCA_SIZE);

	ramphys = pci_resource_start(pdev,3) & PCI_BASE_ADDRESS_MEM_MASK;
	card->rambase = pci_ioremap_bar(pdev, 3);

	if (card->plxbase == NULL ||
	    card->scabase == NULL ||
	    card->rambase == NULL) {
		printk(KERN_ERR "pci200syn: ioremap() failed\n");
		pci200_pci_remove_one(pdev);
		return -EFAULT;
	}

	/* Reset PLX */
	p = &card->plxbase->init_ctrl;
	writel(readl(p) | 0x40000000, p);
	readl(p);		/* Flush the write - do not use sca_flush */
	udelay(1);

	writel(readl(p) & ~0x40000000, p);
	readl(p);		/* Flush the write - do not use sca_flush */
	udelay(1);

	ramsize = sca_detect_ram(card, card->rambase,
				 pci_resource_len(pdev, 3));

	/* number of TX + RX buffers for one port - this is dual port card */
	i = ramsize / (2 * (sizeof(pkt_desc) + HDLC_MAX_MRU));
	card->tx_ring_buffers = min(i / 2, MAX_TX_BUFFERS);
	card->rx_ring_buffers = i - card->tx_ring_buffers;

	card->buff_offset = 2 * sizeof(pkt_desc) * (card->tx_ring_buffers +
						    card->rx_ring_buffers);

	printk(KERN_INFO "pci200syn: %u KB RAM at 0x%x, IRQ%u, using %u TX +"
	       " %u RX packets rings\n", ramsize / 1024, ramphys,
	       pdev->irq, card->tx_ring_buffers, card->rx_ring_buffers);

	if (pdev->subsystem_device == PCI_DEVICE_ID_PLX_9050) {
		printk(KERN_ERR "Detected PCI200SYN card with old "
		       "configuration data.\n");
		printk(KERN_ERR "See <http://www.kernel.org/pub/"
		       "linux/utils/net/hdlc/pci200syn/> for update.\n");
		printk(KERN_ERR "The card will stop working with"
		       " future versions of Linux if not updated.\n");
	}

	if (card->tx_ring_buffers < 1) {
		printk(KERN_ERR "pci200syn: RAM test failed\n");
		pci200_pci_remove_one(pdev);
		return -EFAULT;
//.........这里部分代码省略.........

//.........这里部分代码省略.........
	adapter->netdevp = netdev;
	pnob->adapter = adapter;
	pnob->netdev = netdev;

	status = be_nob_ring_alloc(adapter, pnob);
	if (status != 0)
		goto cleanup;

	status = be_nob_ring_init(adapter, pnob);
	if (status != 0)
		goto cleanup;

	be_rxf_mac_address_read_write(&pnob->fn_obj, false, false, false,
		false, false, netdev->dev_addr, NULL, NULL);

	netdev->init = &benet_init;
	netif_carrier_off(netdev);
	netif_stop_queue(netdev);

	SET_NETDEV_DEV(netdev, &(adapter->pdev->dev));

	netif_napi_add(netdev, &pnob->napi, be_poll, 64);

	/* if the rx_frag size if 2K, one page is shared as two RX frags */
	pnob->rx_pg_shared =
		(pnob->rx_buf_size <= PAGE_SIZE / 2) ? true : false;
	if (pnob->rx_buf_size != rxbuf_size) {
		printk(KERN_WARNING
		       "Could not set Rx buffer size to %d. Using %d\n",
				       rxbuf_size, pnob->rx_buf_size);
		rxbuf_size = pnob->rx_buf_size;
	}

	tasklet_init(&(adapter->sts_handler), be_process_intr,
		     (unsigned long)adapter);
	adapter->tasklet_started = 1;
	spin_lock_init(&(adapter->int_lock));

	status = be_register_isr(adapter, pnob);
	if (status != 0)
		goto cleanup;

	adapter->rx_csum = 1;
	adapter->max_rx_coal = BE_LRO_MAX_PKTS;

	memset(&get_fwv, 0,
	       sizeof(struct FWCMD_COMMON_GET_FW_VERSION_RESPONSE_PAYLOAD));
	printk(KERN_INFO "BladeEngine Driver version:%s. "
	       "Copyright ServerEngines, Corporation 2005 - 2008\n",
			       be_drvr_ver);
	status = be_function_get_fw_version(&pnob->fn_obj, &get_fwv, NULL,
					    NULL);
	if (status == BE_SUCCESS) {
		strncpy(be_fw_ver, get_fwv.firmware_version_string, 32);
		printk(KERN_INFO "BladeEngine Firmware Version:%s\n",
		       get_fwv.firmware_version_string);
	} else {
		printk(KERN_WARNING "Unable to get BE Firmware Version\n");
	}

	sema_init(&adapter->get_eth_stat_sem, 0);
	init_timer(&adapter->timer_ctxt.get_stats_timer);
	atomic_set(&adapter->timer_ctxt.get_stat_flag, 0);
	adapter->timer_ctxt.get_stats_timer.function =
	    &be_get_stats_timer_handler;

	status = be_mcc_create(adapter);
	if (status < 0)
		goto cleanup;
	status = be_mcc_init(adapter);
	if (status < 0)
		goto cleanup;


	status = be_mcc_add_async_event_callback(&adapter->net_obj->mcc_q_obj,
			 be_link_status_async_callback, (void *)adapter);
	if (status != BE_SUCCESS) {
		printk(KERN_WARNING "add_async_event_callback failed");
		printk(KERN_WARNING
		       "Link status changes may not be reflected\n");
	}

	status = register_netdev(netdev);
	if (status != 0)
		goto cleanup;
	be_update_link_status(adapter);
	adapter->dev_state = BE_DEV_STATE_INIT;
	return 0;

cleanup:
	be_remove(pdev);
	return status;
error_adapter:
	pci_release_regions(pdev);
error_pci_req:
	pci_disable_device(pdev);
error:
	printk(KERN_ERR "BladeEngine initalization failed\n");
	return status;
}

static int __devinit ibmasm_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
{
	int result;
	struct service_processor *sp;

	if ((result = pci_enable_device(pdev))) {
		dev_err(&pdev->dev, "Failed to enable PCI device\n");
		return result;
	}
	if ((result = pci_request_regions(pdev, DRIVER_NAME))) {
		dev_err(&pdev->dev, "Failed to allocate PCI resources\n");
		goto error_resources;
	}
	/* vnc client won't work without bus-mastering */
	pci_set_master(pdev);

	sp = kzalloc(sizeof(struct service_processor), GFP_KERNEL);
	if (sp == NULL) {
		dev_err(&pdev->dev, "Failed to allocate memory\n");
		result = -ENOMEM;
		goto error_kmalloc;
	}

	spin_lock_init(&sp->lock);
	INIT_LIST_HEAD(&sp->command_queue);

	pci_set_drvdata(pdev, (void *)sp);
	sp->dev = &pdev->dev;
	sp->number = pdev->bus->number;
	snprintf(sp->dirname, IBMASM_NAME_SIZE, "%d", sp->number);
	snprintf(sp->devname, IBMASM_NAME_SIZE, "%s%d", DRIVER_NAME, sp->number);

	if (ibmasm_event_buffer_init(sp)) {
		dev_err(sp->dev, "Failed to allocate event buffer\n");
		goto error_eventbuffer;
	}

	if (ibmasm_heartbeat_init(sp)) {
		dev_err(sp->dev, "Failed to allocate heartbeat command\n");
		goto error_heartbeat;
	}

	sp->irq = pdev->irq;
	sp->base_address = pci_ioremap_bar(pdev, 0);
	if (!sp->base_address) {
		dev_err(sp->dev, "Failed to ioremap pci memory\n");
		result =  -ENODEV;
		goto error_ioremap;
	}

	result = request_irq(sp->irq, ibmasm_interrupt_handler, IRQF_SHARED, sp->devname, (void*)sp);
	if (result) {
		dev_err(sp->dev, "Failed to register interrupt handler\n");
		goto error_request_irq;
	}

	enable_sp_interrupts(sp->base_address);

	result = ibmasm_init_remote_input_dev(sp);
	if (result) {
		dev_err(sp->dev, "Failed to initialize remote queue\n");
		goto error_send_message;
	}

	result = ibmasm_send_driver_vpd(sp);
	if (result) {
		dev_err(sp->dev, "Failed to send driver VPD to service processor\n");
		goto error_send_message;
	}
	result = ibmasm_send_os_state(sp, SYSTEM_STATE_OS_UP);
	if (result) {
		dev_err(sp->dev, "Failed to send OS state to service processor\n");
		goto error_send_message;
	}
	ibmasmfs_add_sp(sp);

	ibmasm_register_uart(sp);

	return 0;

error_send_message:
	disable_sp_interrupts(sp->base_address);
	ibmasm_free_remote_input_dev(sp);
	free_irq(sp->irq, (void *)sp);
error_request_irq:
	iounmap(sp->base_address);
error_ioremap:
	ibmasm_heartbeat_exit(sp);
error_heartbeat:
	ibmasm_event_buffer_exit(sp);
error_eventbuffer:
	pci_set_drvdata(pdev, NULL);
	kfree(sp);
error_kmalloc:
        pci_release_regions(pdev);
error_resources:
        pci_disable_device(pdev);

	return result;
}

//.........这里部分代码省略.........

    pci_disable_device(dev);

    return -ENODEV; /* no such device error */
  }

  /* NOW WE ARE DEALING WITH THE TIMING CARD */

  /* simple initialization */
  dev_ptr = dev;
  dma_waiting = 0;
  dma_configured = 0;
  output_enabled = 0;

  /* enable DMA */
  pci_set_master(dev);

  if ( pci_set_dma_mask(dev, DMA_BIT_MASK(32)) ) {
    printk(KERN_ALERT "DMA NOT SUPPORTED: Aboting.");
    return -ENODEV; /* not the device we expected */
  }
  else
    printk(KERN_WARNING "Doing DMA with 32 bits\n");

  /* retrieve assigned interrupt line number */
  /*      -> see linux/pci.h lines 255 & 256 */
  irq_line = dev->irq;

  /* request interrupt line number */
  /*    -> common practice says to put this */
  /*       in device open but this could be */
  /*       needed if the user closes the    */
  /*       device before DMA transfer done  */
  rc = request_irq(irq_line, timing_interrupt_handler,
                   IRQF_SHARED, "timing", timing_card);
  if ( rc ) {
    printk(KERN_ALERT "Failed to register irq %d\n", irq_line);
    return rc;
  }

  /* must claim proprietary access to memory region */
  /*      mapped to the device                      */
  rc = pci_request_regions(dev, timing_driver.name);
  if ( rc ) {
    printk(KERN_ALERT "Memory region collision for TIMING card\n");
    goto request_fail;
  }
  
  /* retrieve base address of mmapped regions */
  /*      -> common practice avoids reading   */
  /*         the PCI config space directly    */
  timing_card[0].len = pci_resource_len(dev, TIMING_BAR);
  timing_card[0].base = pci_iomap(dev, TIMING_BAR, 
          /* +1 for maxlen */  timing_card[0].len + 1);
  
  if (!timing_card[0].base) {
    printk(KERN_ALERT "Failed to find Timing base address\n");
    rc = -ENODEV; /* no device error */
    goto no_base;
  }

  /* already did this for timing_card[0] */
  i = 1;

  /* init other IO port vals */
  for ( j = 1; j < TIMING_IOPORT_COUNT; j++, i++ ) {
    timing_card[i].len  = timing_card[0].len;
    timing_card[i].base = timing_card[0].base + (i*TIMING_IOPORT_SIZE);
  }

  /* and onboard timer vals */
  for ( j = 0; j < TIMING_8254_COUNT; j++, i++ ) {
    timing_card[i].len  = timing_card[0].len;
    timing_card[i].base = timing_card[0].base + (i*TIMING_IOPORT_SIZE);
  }

  /* finally, set up for Bus Mater (LCR) (PLX9080) */
  timing_card[i].len = pci_resource_len(dev, PLX9080_BAR);
  timing_card[i].base = pci_iomap(dev, PLX9080_BAR, 
        /* +1 for maxlen */  timing_card[i].len + 1);
  master_chip = &timing_card[i];

 #if DEBUG != 0
  printk(KERN_DEBUG "timing_dev_probe() exit success\n");
 #endif

  /* END NORMAL CONTROL FLOW */
  return 0;

  /* ERROR HANDLING */
 no_base:
  pci_release_regions(dev);
  
 request_fail:
  pci_disable_device(dev);

  pci_clear_master(dev);

  return rc;
} /* end timing_dev_probe */

/**
 * stmmac_pci_probe
 *
 * @pdev: pci device pointer
 * @id: pointer to table of device id/id's.
 *
 * Description: This probing function gets called for all PCI devices which
 * match the ID table and are not "owned" by other driver yet. This function
 * gets passed a "struct pci_dev *" for each device whose entry in the ID table
 * matches the device. The probe functions returns zero when the driver choose
 * to take "ownership" of the device or an error code(-ve no) otherwise.
 */
static int __devinit stmmac_pci_probe(struct pci_dev *pdev,
				      const struct pci_device_id *id)
{
	int ret = 0;
	void __iomem *addr = NULL;
	struct stmmac_priv *priv = NULL;
	int i;

	/* Enable pci device */
	ret = pci_enable_device(pdev);
	if (ret) {
		pr_err("%s : ERROR: failed to enable %s device\n", __func__,
		       pci_name(pdev));
		return ret;
	}
	if (pci_request_regions(pdev, STMMAC_RESOURCE_NAME)) {
		pr_err("%s: ERROR: failed to get PCI region\n", __func__);
		ret = -ENODEV;
		goto err_out_req_reg_failed;
	}

	/* Get the base address of device */
	for (i = 0; i <= 5; i++) {
		if (pci_resource_len(pdev, i) == 0)
			continue;
		addr = pci_iomap(pdev, i, 0);
		if (addr == NULL) {
			pr_err("%s: ERROR: cannot map register memory, aborting",
			       __func__);
			ret = -EIO;
			goto err_out_map_failed;
		}
		break;
	}
	pci_set_master(pdev);

	stmmac_default_data();

	priv = stmmac_dvr_probe(&(pdev->dev), &plat_dat, addr);
	if (!priv) {
		pr_err("%s: main driver probe failed", __func__);
		goto err_out;
	}
	priv->dev->irq = pdev->irq;
	priv->wol_irq = pdev->irq;

	pci_set_drvdata(pdev, priv->dev);

	pr_debug("STMMAC platform driver registration completed");

	return 0;

err_out:
	pci_clear_master(pdev);
err_out_map_failed:
	pci_release_regions(pdev);
err_out_req_reg_failed:
	pci_disable_device(pdev);

	return ret;
}

//.........这里部分代码省略.........
			goto failure_remove_channels;
		}

		priv = netdev_priv(dev);
		chan = priv->priv;

		chan->cfg_base = cfg_base;
		priv->reg_base = reg_base + i * PEAK_PCI_CHAN_SIZE;

		priv->read_reg = peak_pci_read_reg;
		priv->write_reg = peak_pci_write_reg;
		priv->post_irq = peak_pci_post_irq;

		priv->can.clock.freq = PEAK_PCI_CAN_CLOCK;
		priv->ocr = PEAK_PCI_OCR;
		priv->cdr = PEAK_PCI_CDR;
		/* Neither a slave nor a single device distributes the clock */
		if (channels == 1 || i > 0)
			priv->cdr |= CDR_CLK_OFF;

		/* Setup interrupt handling */
		priv->irq_flags = IRQF_SHARED;
		dev->irq = pdev->irq;

		chan->icr_mask = peak_pci_icr_masks[i];
		icr |= chan->icr_mask;

		SET_NETDEV_DEV(dev, &pdev->dev);
		dev->dev_id = i;

		/* Create chain of SJA1000 devices */
		chan->prev_dev = pci_get_drvdata(pdev);
		pci_set_drvdata(pdev, dev);

		/*
		 * PCAN-ExpressCard needs some additional i2c init.
		 * This must be done *before* register_sja1000dev() but
		 * *after* devices linkage
		 */
		if (pdev->device == PEAK_PCIEC_DEVICE_ID) {
			err = peak_pciec_probe(pdev, dev);
			if (err) {
				dev_err(&pdev->dev,
					"failed to probe device (err %d)\n",
					err);
				goto failure_free_dev;
			}
		}

		err = register_sja1000dev(dev);
		if (err) {
			dev_err(&pdev->dev, "failed to register device\n");
			goto failure_free_dev;
		}

		dev_info(&pdev->dev,
			 "%s at reg_base=0x%p cfg_base=0x%p irq=%d\n",
			 dev->name, priv->reg_base, chan->cfg_base, dev->irq);
	}

	/* Enable interrupts */
	writew(icr, cfg_base + PITA_ICR + 2);

	return 0;

failure_free_dev:
	pci_set_drvdata(pdev, chan->prev_dev);
	free_sja1000dev(dev);

failure_remove_channels:
	/* Disable interrupts */
	writew(0x0, cfg_base + PITA_ICR + 2);

	chan = NULL;
	for (dev = pci_get_drvdata(pdev); dev; dev = prev_dev) {
		priv = netdev_priv(dev);
		chan = priv->priv;
		prev_dev = chan->prev_dev;

		unregister_sja1000dev(dev);
		free_sja1000dev(dev);
	}

	/* free any PCIeC resources too */
	if (chan && chan->pciec_card)
		peak_pciec_remove(chan->pciec_card);

	pci_iounmap(pdev, reg_base);

failure_unmap_cfg_base:
	pci_iounmap(pdev, cfg_base);

failure_release_regions:
	pci_release_regions(pdev);

failure_disable_pci:
	pci_disable_device(pdev);

	return err;
}

static int mf624_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
	struct uio_info *info;

	info = kzalloc(sizeof(struct uio_info), GFP_KERNEL);
	if (!info)
		return -ENOMEM;

	if (pci_enable_device(dev))
		goto out_free;

	if (pci_request_regions(dev, "mf624"))
		goto out_disable;

	info->name = "mf624";
	info->version = "0.0.1";

	/* Note: Datasheet says device uses BAR0, BAR1, BAR2 -- do not trust it */

	/* BAR0 */
	info->mem[0].name = "PCI chipset, interrupts, status "
			"bits, special functions";
	info->mem[0].addr = pci_resource_start(dev, 0);
	if (!info->mem[0].addr)
		goto out_release;
	info->mem[0].size = pci_resource_len(dev, 0);
	info->mem[0].memtype = UIO_MEM_PHYS;
	info->mem[0].internal_addr = pci_ioremap_bar(dev, 0);
	if (!info->mem[0].internal_addr)
		goto out_release;

	/* BAR2 */
	info->mem[1].name = "ADC, DAC, DIO";
	info->mem[1].addr = pci_resource_start(dev, 2);
	if (!info->mem[1].addr)
		goto out_unmap0;
	info->mem[1].size = pci_resource_len(dev, 2);
	info->mem[1].memtype = UIO_MEM_PHYS;
	info->mem[1].internal_addr = pci_ioremap_bar(dev, 2);
	if (!info->mem[1].internal_addr)
		goto out_unmap0;

	/* BAR4 */
	info->mem[2].name = "Counter/timer chip";
	info->mem[2].addr = pci_resource_start(dev, 4);
	if (!info->mem[2].addr)
		goto out_unmap1;
	info->mem[2].size = pci_resource_len(dev, 4);
	info->mem[2].memtype = UIO_MEM_PHYS;
	info->mem[2].internal_addr = pci_ioremap_bar(dev, 4);
	if (!info->mem[2].internal_addr)
		goto out_unmap1;

	info->irq = dev->irq;
	info->irq_flags = IRQF_SHARED;
	info->handler = mf624_irq_handler;

	info->irqcontrol = mf624_irqcontrol;

	if (uio_register_device(&dev->dev, info))
		goto out_unmap2;

	pci_set_drvdata(dev, info);

	return 0;

out_unmap2:
	iounmap(info->mem[2].internal_addr);
out_unmap1:
	iounmap(info->mem[1].internal_addr);
out_unmap0:
	iounmap(info->mem[0].internal_addr);

out_release:
	pci_release_regions(dev);

out_disable:
	pci_disable_device(dev);

out_free:
	kfree(info);
	return -ENODEV;
}

//.........这里部分代码省略.........
		np->vlan = (vlan[card_idx] > 0 && vlan[card_idx] < 4096) ?
		    vlan[card_idx] : 0;
		if (rx_coalesce > 0 && rx_timeout > 0) {
			np->rx_coalesce = rx_coalesce;
			np->rx_timeout = rx_timeout;
			np->coalesce = 1;
		}
		np->tx_flow = (tx_flow == 0) ? 0 : 1;
		np->rx_flow = (rx_flow == 0) ? 0 : 1;

		if (tx_coalesce < 1)
			tx_coalesce = 1;
		else if (tx_coalesce > TX_RING_SIZE-1)
			tx_coalesce = TX_RING_SIZE - 1;
	}
	dev->netdev_ops = &netdev_ops;
	dev->watchdog_timeo = TX_TIMEOUT;
	dev->ethtool_ops = &ethtool_ops;
#if 0
	dev->features = NETIF_F_IP_CSUM;
#endif
	/* MTU range: 68 - 1536 or 8000 */
	dev->min_mtu = ETH_MIN_MTU;
	dev->max_mtu = np->jumbo ? MAX_JUMBO : PACKET_SIZE;

	pci_set_drvdata (pdev, dev);

	ring_space = pci_alloc_consistent (pdev, TX_TOTAL_SIZE, &ring_dma);
	if (!ring_space)
		goto err_out_iounmap;
	np->tx_ring = ring_space;
	np->tx_ring_dma = ring_dma;

	ring_space = pci_alloc_consistent (pdev, RX_TOTAL_SIZE, &ring_dma);
	if (!ring_space)
		goto err_out_unmap_tx;
	np->rx_ring = ring_space;
	np->rx_ring_dma = ring_dma;

	/* Parse eeprom data */
	parse_eeprom (dev);

	/* Find PHY address */
	err = find_miiphy (dev);
	if (err)
		goto err_out_unmap_rx;

	/* Fiber device? */
	np->phy_media = (dr16(ASICCtrl) & PhyMedia) ? 1 : 0;
	np->link_status = 0;
	/* Set media and reset PHY */
	if (np->phy_media) {
		/* default Auto-Negotiation for fiber deivices */
	 	if (np->an_enable == 2) {
			np->an_enable = 1;
		}
	} else {
		/* Auto-Negotiation is mandatory for 1000BASE-T,
		   IEEE 802.3ab Annex 28D page 14 */
		if (np->speed == 1000)
			np->an_enable = 1;
	}

	err = register_netdev (dev);
	if (err)
		goto err_out_unmap_rx;

	card_idx++;

	printk (KERN_INFO "%s: %s, %pM, IRQ %d\n",
		dev->name, np->name, dev->dev_addr, irq);
	if (tx_coalesce > 1)
		printk(KERN_INFO "tx_coalesce:\t%d packets\n",
				tx_coalesce);
	if (np->coalesce)
		printk(KERN_INFO
		       "rx_coalesce:\t%d packets\n"
		       "rx_timeout: \t%d ns\n",
				np->rx_coalesce, np->rx_timeout*640);
	if (np->vlan)
		printk(KERN_INFO "vlan(id):\t%d\n", np->vlan);
	return 0;

err_out_unmap_rx:
	pci_free_consistent (pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma);
err_out_unmap_tx:
	pci_free_consistent (pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma);
err_out_iounmap:
#ifdef MEM_MAPPING
	pci_iounmap(pdev, np->ioaddr);
#endif
	pci_iounmap(pdev, np->eeprom_addr);
err_out_dev:
	free_netdev (dev);
err_out_res:
	pci_release_regions (pdev);
err_out_disable:
	pci_disable_device (pdev);
	return err;
}

//.........这里部分代码省略.........
	int i;

	for (i = 0; i < 256; i += 4)
		snd_iprintf(buffer, "%02x: %08x\n", i, readl(chip->remap_addr + i));
}

static void __devinit snd_atiixp_proc_init(struct atiixp_modem *chip)
{
	struct snd_info_entry *entry;

	if (! snd_card_proc_new(chip->card, "atiixp-modem", &entry))
		snd_info_set_text_ops(entry, chip, snd_atiixp_proc_read);
}
#else
#define snd_atiixp_proc_init(chip)
#endif


/*
 * destructor
 */

static int snd_atiixp_free(struct atiixp_modem *chip)
{
	if (chip->irq < 0)
		goto __hw_end;
	snd_atiixp_chip_stop(chip);

      __hw_end:
	if (chip->irq >= 0)
		free_irq(chip->irq, chip);
	if (chip->remap_addr)
		iounmap(chip->remap_addr);
	pci_release_regions(chip->pci);
	pci_disable_device(chip->pci);
	kfree(chip);
	return 0;
}

static int snd_atiixp_dev_free(struct snd_device *device)
{
	struct atiixp_modem *chip = device->device_data;
	return snd_atiixp_free(chip);
}

/*
 * constructor for chip instance
 */
static int __devinit snd_atiixp_create(struct snd_card *card,
				       struct pci_dev *pci,
				       struct atiixp_modem **r_chip)
{
	static struct snd_device_ops ops = {
		.dev_free =	snd_atiixp_dev_free,
	};
	struct atiixp_modem *chip;
	int err;

	if ((err = pci_enable_device(pci)) < 0)
		return err;

	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
	if (chip == NULL) {
		pci_disable_device(pci);
		return -ENOMEM;
	}

//.........这里部分代码省略.........
		goto fail_disable;
	}

	/* enable bus mastering on the device */
	pci_set_master(dev);

	/* remap IO memory */
	err = igbuio_setup_bars(dev, &udev->info);
	if (err != 0)
		goto fail_release_iomem;

	/* set 64-bit DMA mask */
	err = pci_set_dma_mask(dev,  DMA_BIT_MASK(64));
	if (err != 0) {
		dev_err(&dev->dev, "Cannot set DMA mask\n");
		goto fail_release_iomem;
	}

	err = pci_set_consistent_dma_mask(dev, DMA_BIT_MASK(64));
	if (err != 0) {
		dev_err(&dev->dev, "Cannot set consistent DMA mask\n");
		goto fail_release_iomem;
	}

	/* fill uio infos */
	udev->info.name = "igb_uio";
	udev->info.version = "0.1";
	udev->info.handler = igbuio_pci_irqhandler;
	udev->info.irqcontrol = igbuio_pci_irqcontrol;
#ifdef CONFIG_XEN_DOM0
	/* check if the driver run on Xen Dom0 */
	if (xen_initial_domain())
		udev->info.mmap = igbuio_dom0_pci_mmap;
#endif
	udev->info.priv = udev;
	udev->pdev = dev;

	switch (igbuio_intr_mode_preferred) {
	case RTE_INTR_MODE_MSIX:
		/* Only 1 msi-x vector needed */
		msix_entry.entry = 0;
		if (pci_enable_msix(dev, &msix_entry, 1) == 0) {
			dev_dbg(&dev->dev, "using MSI-X");
			udev->info.irq = msix_entry.vector;
			udev->mode = RTE_INTR_MODE_MSIX;
			break;
		}
		/* fall back to INTX */
	case RTE_INTR_MODE_LEGACY:
		if (pci_intx_mask_supported(dev)) {
			dev_dbg(&dev->dev, "using INTX");
			udev->info.irq_flags = IRQF_SHARED;
			udev->info.irq = dev->irq;
			udev->mode = RTE_INTR_MODE_LEGACY;
			break;
		}
		dev_notice(&dev->dev, "PCI INTX mask not supported\n");
		/* fall back to no IRQ */
	case RTE_INTR_MODE_NONE:
		udev->mode = RTE_INTR_MODE_NONE;
		udev->info.irq = 0;
		break;

	default:
		dev_err(&dev->dev, "invalid IRQ mode %u",
			igbuio_intr_mode_preferred);
		err = -EINVAL;
		goto fail_release_iomem;
	}

	err = sysfs_create_group(&dev->dev.kobj, &dev_attr_grp);
	if (err != 0)
		goto fail_release_iomem;

	/* register uio driver */
	err = uio_register_device(&dev->dev, &udev->info);
	if (err != 0)
		goto fail_remove_group;

	pci_set_drvdata(dev, udev);

	dev_info(&dev->dev, "uio device registered with irq %lx\n",
		 udev->info.irq);

	return 0;

fail_remove_group:
	sysfs_remove_group(&dev->dev.kobj, &dev_attr_grp);
fail_release_iomem:
	igbuio_pci_release_iomem(&udev->info);
	if (udev->mode == RTE_INTR_MODE_MSIX)
		pci_disable_msix(udev->pdev);
	pci_release_regions(dev);
fail_disable:
	pci_disable_device(dev);
fail_free:
	kfree(udev);

	return err;
}

static int __devinit t3e3_init_channel(struct channel *channel, struct pci_dev *pdev, struct card *card)
{
	struct net_device *dev;
	unsigned int val;
	int err;

	err = pci_enable_device(pdev);
	if (err)
		return err;

	err = pci_request_regions(pdev, "SBE 2T3E3");
	if (err)
		goto disable;

	dev = alloc_hdlcdev(channel);
	if (!dev) {
		printk(KERN_ERR "SBE 2T3E3" ": Out of memory\n");
		err = -ENOMEM;
		goto free_regions;
	}

	t3e3_sc_init(channel);
	dev_to_priv(dev) = channel;

	channel->pdev = pdev;
	channel->dev = dev;
	channel->card = card;
	channel->addr = pci_resource_start(pdev, 0);
	if (pdev->subsystem_device == PCI_SUBDEVICE_ID_SBE_2T3E3_P1)
		channel->h.slot = 1;
	else
		channel->h.slot = 0;

	err = setup_device(dev, channel);
	if (err)
		goto free_dev;

	pci_read_config_dword(channel->pdev, 0x40, &val); /* mask sleep mode */
	pci_write_config_dword(channel->pdev, 0x40, val & 0x3FFFFFFF);

	pci_read_config_byte(channel->pdev, PCI_CACHE_LINE_SIZE, &channel->h.cache_size);
	pci_read_config_dword(channel->pdev, PCI_COMMAND, &channel->h.command);
	t3e3_init(channel);

	err = request_irq(dev->irq, &t3e3_intr, IRQF_SHARED, dev->name, dev);
	if (err) {
		printk(KERN_WARNING "%s: could not get irq: %d\n", dev->name, dev->irq);
		goto unregister_dev;
	}

	pci_set_drvdata(pdev, channel);
	return 0;

unregister_dev:
	unregister_hdlc_device(dev);
free_dev:
	free_netdev(dev);
free_regions:
	pci_release_regions(pdev);
disable:
	pci_disable_device(pdev);
	return err;
}

static int __devinit ioat_probe(struct pci_dev *pdev,
				const struct pci_device_id *id)
{
	void __iomem *iobase;
	struct ioat_device *device;
	unsigned long mmio_start, mmio_len;
	int err;

	err = pci_enable_device(pdev);
	if (err)
		goto err_enable_device;

	err = pci_request_regions(pdev, ioat_pci_driver.name);
	if (err)
		goto err_request_regions;

	err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
	if (err)
		err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
	if (err)
		goto err_set_dma_mask;

	err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
	if (err)
		err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
	if (err)
		goto err_set_dma_mask;

	mmio_start = pci_resource_start(pdev, 0);
	mmio_len = pci_resource_len(pdev, 0);
	iobase = ioremap(mmio_start, mmio_len);
	if (!iobase) {
		err = -ENOMEM;
		goto err_ioremap;
	}

	device = kzalloc(sizeof(*device), GFP_KERNEL);
	if (!device) {
		err = -ENOMEM;
		goto err_kzalloc;
	}
	device->pdev = pdev;
	pci_set_drvdata(pdev, device);
	device->iobase = iobase;

	pci_set_master(pdev);

	err = ioat_setup_functionality(pdev, iobase);
	if (err)
		goto err_version;

	return 0;

err_version:
	kfree(device);
err_kzalloc:
	iounmap(iobase);
err_ioremap:
err_set_dma_mask:
	pci_release_regions(pdev);
	pci_disable_device(pdev);
err_request_regions:
err_enable_device:
	return err;
}

//.........这里部分代码省略.........
	}

	/* enable pci dev */
	err = pci_enable_device(pdev);
	if (err) {
		dev_err(&pdev->dev, "failed to enable pci device.\n");
		goto end;
	}
	/* set PCI host mastering  */
	pci_set_master(pdev);
	/* pci request regions for mei driver */
	err = pci_request_regions(pdev, KBUILD_MODNAME);
	if (err) {
		dev_err(&pdev->dev, "failed to get pci regions.\n");
		goto disable_device;
	}

	if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) ||
	    dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {

		err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
		if (err)
			err = dma_set_coherent_mask(&pdev->dev,
						    DMA_BIT_MASK(32));
	}
	if (err) {
		dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
		goto release_regions;
	}


	/* allocates and initializes the mei dev structure */
	dev = mei_me_dev_init(pdev);
	if (!dev) {
		err = -ENOMEM;
		goto release_regions;
	}
	hw = to_me_hw(dev);
	/* mapping  IO device memory */
	hw->mem_addr = pci_iomap(pdev, 0, 0);
	if (!hw->mem_addr) {
		dev_err(&pdev->dev, "mapping I/O device memory failure.\n");
		err = -ENOMEM;
		goto free_device;
	}
	pci_enable_msi(pdev);

	 /* request and enable interrupt */
	if (pci_dev_msi_enabled(pdev))
		err = request_threaded_irq(pdev->irq,
			NULL,
			mei_me_irq_thread_handler,
			IRQF_ONESHOT, KBUILD_MODNAME, dev);
	else
		err = request_threaded_irq(pdev->irq,
			mei_me_irq_quick_handler,
			mei_me_irq_thread_handler,
			IRQF_SHARED, KBUILD_MODNAME, dev);

	if (err) {
		dev_err(&pdev->dev, "request_threaded_irq failure. irq = %d\n",
		       pdev->irq);
		goto disable_msi;
	}

	if (mei_start(dev)) {
		dev_err(&pdev->dev, "init hw failure.\n");
		err = -ENODEV;
		goto release_irq;
	}

	err = mei_register(dev);
	if (err)
		goto release_irq;

	pci_set_drvdata(pdev, dev);

	schedule_delayed_work(&dev->timer_work, HZ);

	dev_dbg(&pdev->dev, "initialization successful.\n");

	return 0;

release_irq:
	mei_cancel_work(dev);
	mei_disable_interrupts(dev);
	free_irq(pdev->irq, dev);
disable_msi:
	pci_disable_msi(pdev);
	pci_iounmap(pdev, hw->mem_addr);
free_device:
	kfree(dev);
release_regions:
	pci_release_regions(pdev);
disable_device:
	pci_disable_device(pdev);
end:
	dev_err(&pdev->dev, "initialization failed.\n");
	return err;
}

//.........这里部分代码省略.........
	mem_len = pci_resource_len(pdev, 0);
	if (mem_len < sizeof(struct p54p_csr)) {
		dev_err(&pdev->dev, "Too short PCI resources\n");
		goto err_disable_dev;
	}

	err = pci_request_regions(pdev, "p54pci");
	if (err) {
		dev_err(&pdev->dev, "Cannot obtain PCI resources\n");
		goto err_disable_dev;
	}

	if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) ||
	    pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
		dev_err(&pdev->dev, "No suitable DMA available\n");
		goto err_free_reg;
	}

	pci_set_master(pdev);
	pci_try_set_mwi(pdev);

	pci_write_config_byte(pdev, 0x40, 0);
	pci_write_config_byte(pdev, 0x41, 0);

	dev = p54_init_common(sizeof(*priv));
	if (!dev) {
		dev_err(&pdev->dev, "ieee80211 alloc failed\n");
		err = -ENOMEM;
		goto err_free_reg;
	}

	priv = dev->priv;
	priv->pdev = pdev;

	SET_IEEE80211_DEV(dev, &pdev->dev);
	pci_set_drvdata(pdev, dev);

	priv->map = ioremap(mem_addr, mem_len);
	if (!priv->map) {
		dev_err(&pdev->dev, "Cannot map device memory\n");
		err = -ENOMEM;
		goto err_free_dev;
	}

	priv->ring_control = pci_alloc_consistent(pdev, sizeof(*priv->ring_control),
						  &priv->ring_control_dma);
	if (!priv->ring_control) {
		dev_err(&pdev->dev, "Cannot allocate rings\n");
		err = -ENOMEM;
		goto err_iounmap;
	}
	priv->common.open = p54p_open;
	priv->common.stop = p54p_stop;
	priv->common.tx = p54p_tx;

	spin_lock_init(&priv->lock);
	tasklet_init(&priv->tasklet, p54p_tasklet, (unsigned long)dev);

	err = request_firmware(&priv->firmware, "isl3886pci",
			       &priv->pdev->dev);
	if (err) {
		dev_err(&pdev->dev, "Cannot find firmware (isl3886pci)\n");
		err = request_firmware(&priv->firmware, "isl3886",
				       &priv->pdev->dev);
		if (err)
			goto err_free_common;
	}

	err = p54p_open(dev);
	if (err)
		goto err_free_common;
	err = p54_read_eeprom(dev);
	p54p_stop(dev);
	if (err)
		goto err_free_common;

	err = p54_register_common(dev, &pdev->dev);
	if (err)
		goto err_free_common;

	return 0;

 err_free_common:
	release_firmware(priv->firmware);
	pci_free_consistent(pdev, sizeof(*priv->ring_control),
			    priv->ring_control, priv->ring_control_dma);

 err_iounmap:
	iounmap(priv->map);

 err_free_dev:
	pci_set_drvdata(pdev, NULL);
	p54_free_common(dev);

 err_free_reg:
	pci_release_regions(pdev);
 err_disable_dev:
	pci_disable_device(pdev);
	return err;
}

//.........这里部分代码省略.........
	/*
	 * Now do everything the same as a PCI device
	 * [MSM] TODO: We could probably factor this out of pcmcia/pci/plx
	 * and perhaps usb.  Perhaps a task for another day.......
	 */

	if ((wlandev = create_wlan()) == NULL) {
		WLAN_LOG_ERROR("%s: Memory allocation failure.\n", dev_info);
		result = -EIO;
		goto failed;
	}

	hw = wlandev->priv;

	if ( wlan_setup(wlandev) != 0 ) {
		WLAN_LOG_ERROR("%s: wlan_setup() failed.\n", dev_info);
		result = -EIO;
		goto failed;
	}

	/* Setup netdevice's ability to report resources
	 * Note: the netdevice was allocated by wlan_setup()
	 */
        wlandev->netdev->irq = pdev->irq;
        wlandev->netdev->base_addr = pccard_ioaddr;
        wlandev->netdev->mem_start = (unsigned long)attr_mem;
        wlandev->netdev->mem_end = (unsigned long)attr_mem + pci_resource_len(pdev, 0);

	/* Initialize the hw data */
        hfa384x_create(hw, wlandev->netdev->irq, pccard_ioaddr, attr_mem);
	hw->wlandev = wlandev;

	/* Register the wlandev, this gets us a name and registers the
	 * linux netdevice.
	 */
	SET_MODULE_OWNER(wlandev->netdev);
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
       SET_NETDEV_DEV(wlandev->netdev, &(pdev->dev));
#endif
        if ( register_wlandev(wlandev) != 0 ) {
		WLAN_LOG_ERROR("%s: register_wlandev() failed.\n", dev_info);
		result = -EIO;
		goto failed;
        }

#if 0
	/* TODO: Move this and an irq test into an hfa384x_testif() routine.
	 */
	outw(PRISM2STA_MAGIC, HFA384x_SWSUPPORT(wlandev->netdev->base_addr));
	reg=inw( HFA384x_SWSUPPORT(wlandev->netdev->base_addr));
	if ( reg != PRISM2STA_MAGIC ) {
		WLAN_LOG_ERROR("MAC register access test failed!\n");
 		result = -EIO;
		goto failed;
	}
#endif

	/* Do a chip-level reset on the MAC */
	if (prism2_doreset) {
		result = hfa384x_corereset(hw,
				prism2_reset_holdtime,
				prism2_reset_settletime, 0);
		if (result != 0) {
			unregister_wlandev(wlandev);
			hfa384x_destroy(hw);
			WLAN_LOG_ERROR(
				"%s: hfa384x_corereset() failed.\n",
				dev_info);
			result = -EIO;
			goto failed;
		}
	}

	pci_set_drvdata(pdev, wlandev);

	/* Shouldn't actually hook up the IRQ until we
	 * _know_ things are alright.  A test routine would help.
	 */
       	request_irq(wlandev->netdev->irq, hfa384x_interrupt,
		SA_SHIRQ, wlandev->name, wlandev);

	wlandev->msdstate = WLAN_MSD_HWPRESENT;

	result = 0;

	goto done;

 failed:

	pci_set_drvdata(pdev, NULL);
	if (wlandev)	kfree(wlandev);
	if (hw)		kfree(hw);
        if (attr_mem)        iounmap(attr_mem);
	pci_release_regions(pdev);
        pci_disable_device(pdev);

 done:
	DBFEXIT;
        return result;
}