1 files changed, 703 insertions, 0 deletions

diff --git a/drivers/net/wireless/p54/p54pci.c b/drivers/net/wireless/p54/p54pci.c
new file mode 100644
index 000000000..977ef9fb9
--- /dev/null
+++ b/drivers/net/wireless/p54/p54pci.c
@@ -0,0 +1,703 @@
+
+/*
+ * Linux device driver for PCI based Prism54
+ *
+ * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
+ * Copyright (c) 2008, Christian Lamparter <chunkeey@web.de>
+ *
+ * Based on the islsm (softmac prism54) driver, which is:
+ * Copyright 2004-2006 Jean-Baptiste Note <jean-baptiste.note@m4x.org>, et al.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/firmware.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+#include <linux/completion.h>
+#include <linux/module.h>
+#include <net/mac80211.h>
+
+#include "p54.h"
+#include "lmac.h"
+#include "p54pci.h"
+
+MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
+MODULE_DESCRIPTION("Prism54 PCI wireless driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("prism54pci");
+/*(DEBLOBBED)*/
+
+static const struct pci_device_id p54p_table[] = {
+	/* Intersil PRISM Duette/Prism GT Wireless LAN adapter */
+	{ PCI_DEVICE(0x1260, 0x3890) },
+	/* 3COM 3CRWE154G72 Wireless LAN adapter */
+	{ PCI_DEVICE(0x10b7, 0x6001) },
+	/* Intersil PRISM Indigo Wireless LAN adapter */
+	{ PCI_DEVICE(0x1260, 0x3877) },
+	/* Intersil PRISM Javelin/Xbow Wireless LAN adapter */
+	{ PCI_DEVICE(0x1260, 0x3886) },
+	/* Intersil PRISM Xbow Wireless LAN adapter (Symbol AP-300) */
+	{ PCI_DEVICE(0x1260, 0xffff) },
+	{ },
+};
+
+MODULE_DEVICE_TABLE(pci, p54p_table);
+
+static int p54p_upload_firmware(struct ieee80211_hw *dev)
+{
+	struct p54p_priv *priv = dev->priv;
+	__le32 reg;
+	int err;
+	__le32 *data;
+	u32 remains, left, device_addr;
+
+	P54P_WRITE(int_enable, cpu_to_le32(0));
+	P54P_READ(int_enable);
+	udelay(10);
+
+	reg = P54P_READ(ctrl_stat);
+	reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
+	reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RAMBOOT);
+	P54P_WRITE(ctrl_stat, reg);
+	P54P_READ(ctrl_stat);
+	udelay(10);
+
+	reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
+	P54P_WRITE(ctrl_stat, reg);
+	wmb();
+	udelay(10);
+
+	reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
+	P54P_WRITE(ctrl_stat, reg);
+	wmb();
+
+	/* wait for the firmware to reset properly */
+	mdelay(10);
+
+	err = p54_parse_firmware(dev, priv->firmware);
+	if (err)
+		return err;
+
+	if (priv->common.fw_interface != FW_LM86) {
+		dev_err(&priv->pdev->dev, "wrong firmware, "
+			"please get a LM86(PCI) firmware a try again.\n");
+		return -EINVAL;
+	}
+
+	data = (__le32 *) priv->firmware->data;
+	remains = priv->firmware->size;
+	device_addr = ISL38XX_DEV_FIRMWARE_ADDR;
+	while (remains) {
+		u32 i = 0;
+		left = min((u32)0x1000, remains);
+		P54P_WRITE(direct_mem_base, cpu_to_le32(device_addr));
+		P54P_READ(int_enable);
+
+		device_addr += 0x1000;
+		while (i < left) {
+			P54P_WRITE(direct_mem_win[i], *data++);
+			i += sizeof(u32);
+		}
+
+		remains -= left;
+		P54P_READ(int_enable);
+	}
+
+	reg = P54P_READ(ctrl_stat);
+	reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
+	reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
+	reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RAMBOOT);
+	P54P_WRITE(ctrl_stat, reg);
+	P54P_READ(ctrl_stat);
+	udelay(10);
+
+	reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
+	P54P_WRITE(ctrl_stat, reg);
+	wmb();
+	udelay(10);
+
+	reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
+	P54P_WRITE(ctrl_stat, reg);
+	wmb();
+	udelay(10);
+
+	/* wait for the firmware to boot properly */
+	mdelay(100);
+
+	return 0;
+}
+
+static void p54p_refill_rx_ring(struct ieee80211_hw *dev,
+	int ring_index, struct p54p_desc *ring, u32 ring_limit,
+	struct sk_buff **rx_buf, u32 index)
+{
+	struct p54p_priv *priv = dev->priv;
+	struct p54p_ring_control *ring_control = priv->ring_control;
+	u32 limit, idx, i;
+
+	idx = le32_to_cpu(ring_control->host_idx[ring_index]);
+	limit = idx;
+	limit -= index;
+	limit = ring_limit - limit;
+
+	i = idx % ring_limit;
+	while (limit-- > 1) {
+		struct p54p_desc *desc = &ring[i];
+
+		if (!desc->host_addr) {
+			struct sk_buff *skb;
+			dma_addr_t mapping;
+			skb = dev_alloc_skb(priv->common.rx_mtu + 32);
+			if (!skb)
+				break;
+
+			mapping = pci_map_single(priv->pdev,
+						 skb_tail_pointer(skb),
+						 priv->common.rx_mtu + 32,
+						 PCI_DMA_FROMDEVICE);
+
+			if (pci_dma_mapping_error(priv->pdev, mapping)) {
+				dev_kfree_skb_any(skb);
+				dev_err(&priv->pdev->dev,
+					"RX DMA Mapping error\n");
+				break;
+			}
+
+			desc->host_addr = cpu_to_le32(mapping);
+			desc->device_addr = 0;	// FIXME: necessary?
+			desc->len = cpu_to_le16(priv->common.rx_mtu + 32);
+			desc->flags = 0;
+			rx_buf[i] = skb;
+		}
+
+		i++;
+		idx++;
+		i %= ring_limit;
+	}
+
+	wmb();
+	ring_control->host_idx[ring_index] = cpu_to_le32(idx);
+}
+
+static void p54p_check_rx_ring(struct ieee80211_hw *dev, u32 *index,
+	int ring_index, struct p54p_desc *ring, u32 ring_limit,
+	struct sk_buff **rx_buf)
+{
+	struct p54p_priv *priv = dev->priv;
+	struct p54p_ring_control *ring_control = priv->ring_control;
+	struct p54p_desc *desc;
+	u32 idx, i;
+
+	i = (*index) % ring_limit;
+	(*index) = idx = le32_to_cpu(ring_control->device_idx[ring_index]);
+	idx %= ring_limit;
+	while (i != idx) {
+		u16 len;
+		struct sk_buff *skb;
+		dma_addr_t dma_addr;
+		desc = &ring[i];
+		len = le16_to_cpu(desc->len);
+		skb = rx_buf[i];
+
+		if (!skb) {
+			i++;
+			i %= ring_limit;
+			continue;
+		}
+
+		if (unlikely(len > priv->common.rx_mtu)) {
+			if (net_ratelimit())
+				dev_err(&priv->pdev->dev, "rx'd frame size "
+					"exceeds length threshold.\n");
+
+			len = priv->common.rx_mtu;
+		}
+		dma_addr = le32_to_cpu(desc->host_addr);
+		pci_dma_sync_single_for_cpu(priv->pdev, dma_addr,
+			priv->common.rx_mtu + 32, PCI_DMA_FROMDEVICE);
+		skb_put(skb, len);
+
+		if (p54_rx(dev, skb)) {
+			pci_unmap_single(priv->pdev, dma_addr,
+				priv->common.rx_mtu + 32, PCI_DMA_FROMDEVICE);
+			rx_buf[i] = NULL;
+			desc->host_addr = cpu_to_le32(0);
+		} else {
+			skb_trim(skb, 0);
+			pci_dma_sync_single_for_device(priv->pdev, dma_addr,
+				priv->common.rx_mtu + 32, PCI_DMA_FROMDEVICE);
+			desc->len = cpu_to_le16(priv->common.rx_mtu + 32);
+		}
+
+		i++;
+		i %= ring_limit;
+	}
+
+	p54p_refill_rx_ring(dev, ring_index, ring, ring_limit, rx_buf, *index);
+}
+
+static void p54p_check_tx_ring(struct ieee80211_hw *dev, u32 *index,
+	int ring_index, struct p54p_desc *ring, u32 ring_limit,
+	struct sk_buff **tx_buf)
+{
+	struct p54p_priv *priv = dev->priv;
+	struct p54p_ring_control *ring_control = priv->ring_control;
+	struct p54p_desc *desc;
+	struct sk_buff *skb;
+	u32 idx, i;
+
+	i = (*index) % ring_limit;
+	(*index) = idx = le32_to_cpu(ring_control->device_idx[ring_index]);
+	idx %= ring_limit;
+
+	while (i != idx) {
+		desc = &ring[i];
+
+		skb = tx_buf[i];
+		tx_buf[i] = NULL;
+
+		pci_unmap_single(priv->pdev, le32_to_cpu(desc->host_addr),
+				 le16_to_cpu(desc->len), PCI_DMA_TODEVICE);
+
+		desc->host_addr = 0;
+		desc->device_addr = 0;
+		desc->len = 0;
+		desc->flags = 0;
+
+		if (skb && FREE_AFTER_TX(skb))
+			p54_free_skb(dev, skb);
+
+		i++;
+		i %= ring_limit;
+	}
+}
+
+static void p54p_tasklet(unsigned long dev_id)
+{
+	struct ieee80211_hw *dev = (struct ieee80211_hw *)dev_id;
+	struct p54p_priv *priv = dev->priv;
+	struct p54p_ring_control *ring_control = priv->ring_control;
+
+	p54p_check_tx_ring(dev, &priv->tx_idx_mgmt, 3, ring_control->tx_mgmt,
+			   ARRAY_SIZE(ring_control->tx_mgmt),
+			   priv->tx_buf_mgmt);
+
+	p54p_check_tx_ring(dev, &priv->tx_idx_data, 1, ring_control->tx_data,
+			   ARRAY_SIZE(ring_control->tx_data),
+			   priv->tx_buf_data);
+
+	p54p_check_rx_ring(dev, &priv->rx_idx_mgmt, 2, ring_control->rx_mgmt,
+		ARRAY_SIZE(ring_control->rx_mgmt), priv->rx_buf_mgmt);
+
+	p54p_check_rx_ring(dev, &priv->rx_idx_data, 0, ring_control->rx_data,
+		ARRAY_SIZE(ring_control->rx_data), priv->rx_buf_data);
+
+	wmb();
+	P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_UPDATE));
+}
+
+static irqreturn_t p54p_interrupt(int irq, void *dev_id)
+{
+	struct ieee80211_hw *dev = dev_id;
+	struct p54p_priv *priv = dev->priv;
+	__le32 reg;
+
+	reg = P54P_READ(int_ident);
+	if (unlikely(reg == cpu_to_le32(0xFFFFFFFF))) {
+		goto out;
+	}
+	P54P_WRITE(int_ack, reg);
+
+	reg &= P54P_READ(int_enable);
+
+	if (reg & cpu_to_le32(ISL38XX_INT_IDENT_UPDATE))
+		tasklet_schedule(&priv->tasklet);
+	else if (reg & cpu_to_le32(ISL38XX_INT_IDENT_INIT))
+		complete(&priv->boot_comp);
+
+out:
+	return reg ? IRQ_HANDLED : IRQ_NONE;
+}
+
+static void p54p_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
+{
+	unsigned long flags;
+	struct p54p_priv *priv = dev->priv;
+	struct p54p_ring_control *ring_control = priv->ring_control;
+	struct p54p_desc *desc;
+	dma_addr_t mapping;
+	u32 idx, i;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	idx = le32_to_cpu(ring_control->host_idx[1]);
+	i = idx % ARRAY_SIZE(ring_control->tx_data);
+
+	mapping = pci_map_single(priv->pdev, skb->data, skb->len,
+				 PCI_DMA_TODEVICE);
+	if (pci_dma_mapping_error(priv->pdev, mapping)) {
+		spin_unlock_irqrestore(&priv->lock, flags);
+		p54_free_skb(dev, skb);
+		dev_err(&priv->pdev->dev, "TX DMA mapping error\n");
+		return ;
+	}
+	priv->tx_buf_data[i] = skb;
+
+	desc = &ring_control->tx_data[i];
+	desc->host_addr = cpu_to_le32(mapping);
+	desc->device_addr = ((struct p54_hdr *)skb->data)->req_id;
+	desc->len = cpu_to_le16(skb->len);
+	desc->flags = 0;
+
+	wmb();
+	ring_control->host_idx[1] = cpu_to_le32(idx + 1);
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_UPDATE));
+	P54P_READ(dev_int);
+}
+
+static void p54p_stop(struct ieee80211_hw *dev)
+{
+	struct p54p_priv *priv = dev->priv;
+	struct p54p_ring_control *ring_control = priv->ring_control;
+	unsigned int i;
+	struct p54p_desc *desc;
+
+	P54P_WRITE(int_enable, cpu_to_le32(0));
+	P54P_READ(int_enable);
+	udelay(10);
+
+	free_irq(priv->pdev->irq, dev);
+
+	tasklet_kill(&priv->tasklet);
+
+	P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_RESET));
+
+	for (i = 0; i < ARRAY_SIZE(priv->rx_buf_data); i++) {
+		desc = &ring_control->rx_data[i];
+		if (desc->host_addr)
+			pci_unmap_single(priv->pdev,
+					 le32_to_cpu(desc->host_addr),
+					 priv->common.rx_mtu + 32,
+					 PCI_DMA_FROMDEVICE);
+		kfree_skb(priv->rx_buf_data[i]);
+		priv->rx_buf_data[i] = NULL;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(priv->rx_buf_mgmt); i++) {
+		desc = &ring_control->rx_mgmt[i];
+		if (desc->host_addr)
+			pci_unmap_single(priv->pdev,
+					 le32_to_cpu(desc->host_addr),
+					 priv->common.rx_mtu + 32,
+					 PCI_DMA_FROMDEVICE);
+		kfree_skb(priv->rx_buf_mgmt[i]);
+		priv->rx_buf_mgmt[i] = NULL;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(priv->tx_buf_data); i++) {
+		desc = &ring_control->tx_data[i];
+		if (desc->host_addr)
+			pci_unmap_single(priv->pdev,
+					 le32_to_cpu(desc->host_addr),
+					 le16_to_cpu(desc->len),
+					 PCI_DMA_TODEVICE);
+
+		p54_free_skb(dev, priv->tx_buf_data[i]);
+		priv->tx_buf_data[i] = NULL;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(priv->tx_buf_mgmt); i++) {
+		desc = &ring_control->tx_mgmt[i];
+		if (desc->host_addr)
+			pci_unmap_single(priv->pdev,
+					 le32_to_cpu(desc->host_addr),
+					 le16_to_cpu(desc->len),
+					 PCI_DMA_TODEVICE);
+
+		p54_free_skb(dev, priv->tx_buf_mgmt[i]);
+		priv->tx_buf_mgmt[i] = NULL;
+	}
+
+	memset(ring_control, 0, sizeof(*ring_control));
+}
+
+static int p54p_open(struct ieee80211_hw *dev)
+{
+	struct p54p_priv *priv = dev->priv;
+	int err;
+	long timeout;
+
+	init_completion(&priv->boot_comp);
+	err = request_irq(priv->pdev->irq, p54p_interrupt,
+			  IRQF_SHARED, "p54pci", dev);
+	if (err) {
+		dev_err(&priv->pdev->dev, "failed to register IRQ handler\n");
+		return err;
+	}
+
+	memset(priv->ring_control, 0, sizeof(*priv->ring_control));
+	err = p54p_upload_firmware(dev);
+	if (err) {
+		free_irq(priv->pdev->irq, dev);
+		return err;
+	}
+	priv->rx_idx_data = priv->tx_idx_data = 0;
+	priv->rx_idx_mgmt = priv->tx_idx_mgmt = 0;
+
+	p54p_refill_rx_ring(dev, 0, priv->ring_control->rx_data,
+		ARRAY_SIZE(priv->ring_control->rx_data), priv->rx_buf_data, 0);
+
+	p54p_refill_rx_ring(dev, 2, priv->ring_control->rx_mgmt,
+		ARRAY_SIZE(priv->ring_control->rx_mgmt), priv->rx_buf_mgmt, 0);
+
+	P54P_WRITE(ring_control_base, cpu_to_le32(priv->ring_control_dma));
+	P54P_READ(ring_control_base);
+	wmb();
+	udelay(10);
+
+	P54P_WRITE(int_enable, cpu_to_le32(ISL38XX_INT_IDENT_INIT));
+	P54P_READ(int_enable);
+	wmb();
+	udelay(10);
+
+	P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_RESET));
+	P54P_READ(dev_int);
+
+	timeout = wait_for_completion_interruptible_timeout(
+			&priv->boot_comp, HZ);
+	if (timeout <= 0) {
+		wiphy_err(dev->wiphy, "Cannot boot firmware!\n");
+		p54p_stop(dev);
+		return timeout ? -ERESTARTSYS : -ETIMEDOUT;
+	}
+
+	P54P_WRITE(int_enable, cpu_to_le32(ISL38XX_INT_IDENT_UPDATE));
+	P54P_READ(int_enable);
+	wmb();
+	udelay(10);
+
+	P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_UPDATE));
+	P54P_READ(dev_int);
+	wmb();
+	udelay(10);
+
+	return 0;
+}
+
+static void p54p_firmware_step2(const struct firmware *fw,
+				void *context)
+{
+	struct p54p_priv *priv = context;
+	struct ieee80211_hw *dev = priv->common.hw;
+	struct pci_dev *pdev = priv->pdev;
+	int err;
+
+	if (!fw) {
+		dev_err(&pdev->dev, "Cannot find firmware (/*(DEBLOBBED)*/)\n");
+		err = -ENOENT;
+		goto out;
+	}
+
+	priv->firmware = fw;
+
+	err = p54p_open(dev);
+	if (err)
+		goto out;
+	err = p54_read_eeprom(dev);
+	p54p_stop(dev);
+	if (err)
+		goto out;
+
+	err = p54_register_common(dev, &pdev->dev);
+	if (err)
+		goto out;
+
+out:
+
+	complete(&priv->fw_loaded);
+
+	if (err) {
+		struct device *parent = pdev->dev.parent;
+
+		if (parent)
+			device_lock(parent);
+
+		/*
+		 * This will indirectly result in a call to p54p_remove.
+		 * Hence, we don't need to bother with freeing any
+		 * allocated ressources at all.
+		 */
+		device_release_driver(&pdev->dev);
+
+		if (parent)
+			device_unlock(parent);
+	}
+
+	pci_dev_put(pdev);
+}
+
+static int p54p_probe(struct pci_dev *pdev,
+				const struct pci_device_id *id)
+{
+	struct p54p_priv *priv;
+	struct ieee80211_hw *dev;
+	unsigned long mem_addr, mem_len;
+	int err;
+
+	pci_dev_get(pdev);
+	err = pci_enable_device(pdev);
+	if (err) {
+		dev_err(&pdev->dev, "Cannot enable new PCI device\n");
+		return err;
+	}
+
+	mem_addr = pci_resource_start(pdev, 0);
+	mem_len = pci_resource_len(pdev, 0);
+	if (mem_len < sizeof(struct p54p_csr)) {
+		dev_err(&pdev->dev, "Too short PCI resources\n");
+		err = -ENODEV;
+		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;
+	}
+
+	err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+	if (!err)
+		err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+	if (err) {
+		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;
+
+	init_completion(&priv->fw_loaded);
+	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 = reject_firmware_nowait(THIS_MODULE, 1, "/*(DEBLOBBED)*/",
+				      &priv->pdev->dev, GFP_KERNEL,
+				      priv, p54p_firmware_step2);
+	if (!err)
+		return 0;
+
+	pci_free_consistent(pdev, sizeof(*priv->ring_control),
+			    priv->ring_control, priv->ring_control_dma);
+
+ err_iounmap:
+	iounmap(priv->map);
+
+ err_free_dev:
+	p54_free_common(dev);
+
+ err_free_reg:
+	pci_release_regions(pdev);
+ err_disable_dev:
+	pci_disable_device(pdev);
+	pci_dev_put(pdev);
+	return err;
+}
+
+static void p54p_remove(struct pci_dev *pdev)
+{
+	struct ieee80211_hw *dev = pci_get_drvdata(pdev);
+	struct p54p_priv *priv;
+
+	if (!dev)
+		return;
+
+	priv = dev->priv;
+	wait_for_completion(&priv->fw_loaded);
+	p54_unregister_common(dev);
+	release_firmware(priv->firmware);
+	pci_free_consistent(pdev, sizeof(*priv->ring_control),
+			    priv->ring_control, priv->ring_control_dma);
+	iounmap(priv->map);
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+	p54_free_common(dev);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int p54p_suspend(struct device *device)
+{
+	struct pci_dev *pdev = to_pci_dev(device);
+
+	pci_save_state(pdev);
+	pci_set_power_state(pdev, PCI_D3hot);
+	pci_disable_device(pdev);
+	return 0;
+}
+
+static int p54p_resume(struct device *device)
+{
+	struct pci_dev *pdev = to_pci_dev(device);
+	int err;
+
+	err = pci_reenable_device(pdev);
+	if (err)
+		return err;
+	return pci_set_power_state(pdev, PCI_D0);
+}
+
+static SIMPLE_DEV_PM_OPS(p54pci_pm_ops, p54p_suspend, p54p_resume);
+
+#define P54P_PM_OPS (&p54pci_pm_ops)
+#else
+#define P54P_PM_OPS (NULL)
+#endif /* CONFIG_PM_SLEEP */
+
+static struct pci_driver p54p_driver = {
+	.name		= "p54pci",
+	.id_table	= p54p_table,
+	.probe		= p54p_probe,
+	.remove		= p54p_remove,
+	.driver.pm	= P54P_PM_OPS,
+};
+
+module_pci_driver(p54p_driver);