[P54]: add mac80211-based driver for prism54 softmac hardware

Signed-off-by: NMichael Wu <flamingice@sourmilk.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

MAINTAINERS

@@ -3060,6 +3060,14 @@ L:	kpreempt-tech@lists.sourceforge.net
 W:	ftp://ftp.kernel.org/pub/linux/kernel/people/rml/preempt-kernel
 S:	Supported
 
+P54 WIRELESS DRIVER
+P:	Michael Wu
+M:	flamingice@sourmilk.net
+L:	linux-wireless@vger.kernel.org
+W:	http://prism54.org
+T:	git kernel.org:/pub/scm/linux/kernel/git/mwu/mac80211-drivers.git
+S:	Maintained
+
 PRISM54 WIRELESS DRIVER
 P:	Luis R. Rodriguez
 M:	mcgrof@gmail.com

drivers/net/wireless/Kconfig

@@ -577,6 +577,19 @@ config ADM8211
 
 	  Thanks to Infineon-ADMtek for their support of this driver.
 
+config P54_COMMON
+	tristate "Softmac Prism54 support"
+	depends on MAC80211 && WLAN_80211 && FW_LOADER && EXPERIMENTAL
+
+config P54_USB
+	tristate "Prism54 USB support"
+	depends on P54_COMMON && USB
+	select CRC32
+
+config P54_PCI
+	tristate "Prism54 PCI support"
+	depends on P54_COMMON && PCI
+
 source "drivers/net/wireless/iwlwifi/Kconfig"
 source "drivers/net/wireless/hostap/Kconfig"
 source "drivers/net/wireless/bcm43xx/Kconfig"

drivers/net/wireless/Makefile

@@ -54,3 +54,7 @@ obj-$(CONFIG_ADM8211)	+= adm8211.o
 
 obj-$(CONFIG_IWLWIFI)	+= iwlwifi/
 obj-$(CONFIG_RT2X00)	+= rt2x00/
+
+obj-$(CONFIG_P54_COMMON)	+= p54common.o
+obj-$(CONFIG_P54_USB)		+= p54usb.o
+obj-$(CONFIG_P54_PCI)		+= p54pci.o

drivers/net/wireless/p54.h

+#ifndef PRISM54_H
+#define PRISM54_H
+
+/*
+ * Shared defines for all mac80211 Prism54 code
+ *
+ * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
+ *
+ * Based on the islsm (softmac prism54) driver, which is:
+ * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, 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.
+ */
+
+enum control_frame_types {
+	P54_CONTROL_TYPE_FILTER_SET = 0,
+	P54_CONTROL_TYPE_CHANNEL_CHANGE,
+	P54_CONTROL_TYPE_FREQDONE,
+	P54_CONTROL_TYPE_DCFINIT,
+	P54_CONTROL_TYPE_FREEQUEUE = 7,
+	P54_CONTROL_TYPE_TXDONE,
+	P54_CONTROL_TYPE_PING,
+	P54_CONTROL_TYPE_STAT_READBACK,
+	P54_CONTROL_TYPE_BBP,
+	P54_CONTROL_TYPE_EEPROM_READBACK,
+	P54_CONTROL_TYPE_LED
+};
+
+struct p54_control_hdr {
+	__le16 magic1;
+	__le16 len;
+	__le32 req_id;
+	__le16 type;	/* enum control_frame_types */
+	u8 retry1;
+	u8 retry2;
+	u8 data[0];
+} __attribute__ ((packed));
+
+#define EEPROM_READBACK_LEN (sizeof(struct p54_control_hdr) + 4 /* p54_eeprom_lm86 */)
+#define MAX_RX_SIZE (IEEE80211_MAX_RTS_THRESHOLD + sizeof(struct p54_control_hdr) + 20 /* length of struct p54_rx_hdr */ + 16 )
+
+#define ISL38XX_DEV_FIRMWARE_ADDR 0x20000
+
+struct p54_common {
+	u32 rx_start;
+	u32 rx_end;
+	struct sk_buff_head tx_queue;
+	void (*tx)(struct ieee80211_hw *dev, struct p54_control_hdr *data,
+		   size_t len, int free_on_tx);
+	int (*open)(struct ieee80211_hw *dev);
+	void (*stop)(struct ieee80211_hw *dev);
+	int mode;
+	u8 *mac_addr;
+	struct pda_iq_autocal_entry *iq_autocal;
+	unsigned int iq_autocal_len;
+	struct pda_channel_output_limit *output_limit;
+	unsigned int output_limit_len;
+	struct pda_pa_curve_data *curve_data;
+	__le16 rxhw;
+	u8 version;
+	unsigned int tx_hdr_len;
+	void *cached_vdcf;
+	unsigned int fw_var;
+	/* FIXME: this channels/modes/rates stuff sucks */
+	struct ieee80211_channel channels[14];
+	struct ieee80211_rate rates[12];
+	struct ieee80211_hw_mode modes[2];
+	struct ieee80211_tx_queue_stats tx_stats;
+};
+
+int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb);
+void p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw);
+int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len);
+void p54_fill_eeprom_readback(struct p54_control_hdr *hdr);
+struct ieee80211_hw *p54_init_common(size_t priv_data_len);
+void p54_free_common(struct ieee80211_hw *dev);
+
+#endif /* PRISM54_H */

drivers/net/wireless/p54common.h

+#ifndef PRISM54COMMON_H
+#define PRISM54COMMON_H
+
+/*
+ * Common code specific definitions for mac80211 Prism54 drivers
+ *
+ * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
+ * Copyright (c) 2007, Christian Lamparter <chunkeey@web.de>
+ *
+ * Based on the islsm (softmac prism54) driver, which is:
+ * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, 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.
+ */
+
+struct bootrec {
+	__le32 code;
+	__le32 len;
+	u32 data[0];
+} __attribute__((packed));
+
+struct bootrec_exp_if {
+	__le16 role;
+	__le16 if_id;
+	__le16 variant;
+	__le16 btm_compat;
+	__le16 top_compat;
+} __attribute__((packed));
+
+#define BR_CODE_MIN			0x80000000
+#define BR_CODE_COMPONENT_ID		0x80000001
+#define BR_CODE_COMPONENT_VERSION	0x80000002
+#define BR_CODE_DEPENDENT_IF		0x80000003
+#define BR_CODE_EXPOSED_IF		0x80000004
+#define BR_CODE_DESCR			0x80000101
+#define BR_CODE_MAX			0x8FFFFFFF
+#define BR_CODE_END_OF_BRA		0xFF0000FF
+#define LEGACY_BR_CODE_END_OF_BRA	0xFFFFFFFF
+
+#define FW_FMAC 0x464d4143
+#define FW_LM86 0x4c4d3836
+#define FW_LM87 0x4c4d3837
+#define FW_LM20 0x4c4d3230
+
+/* PDA defines are Copyright (C) 2005 Nokia Corporation (taken from islsm_pda.h) */
+
+struct pda_entry {
+	__le16 len;	/* includes both code and data */
+	__le16 code;
+	u8 data[0];
+} __attribute__ ((packed));
+
+struct eeprom_pda_wrap {
+	u32 magic;
+	u16 pad;
+	u16 len;
+	u32 arm_opcode;
+	u8 data[0];
+} __attribute__ ((packed));
+
+struct pda_iq_autocal_entry {
+        __le16 freq;
+        __le16 iq_param[4];
+} __attribute__ ((packed));
+
+struct pda_channel_output_limit {
+	__le16 freq;
+	u8 val_bpsk;
+	u8 val_qpsk;
+	u8 val_16qam;
+	u8 val_64qam;
+	u8 rate_set_mask;
+	u8 rate_set_size;
+} __attribute__ ((packed));
+
+struct pda_pa_curve_data_sample_rev0 {
+	u8 rf_power;
+	u8 pa_detector;
+	u8 pcv;
+} __attribute__ ((packed));
+
+struct pda_pa_curve_data_sample_rev1 {
+	u8 rf_power;
+	u8 pa_detector;
+	u8 data_barker;
+	u8 data_bpsk;
+	u8 data_qpsk;
+	u8 data_16qam;
+	u8 data_64qam;
+	u8 padding;
+} __attribute__ ((packed));
+
+struct pda_pa_curve_data {
+	u8 cal_method_rev;
+	u8 channels;
+	u8 points_per_channel;
+	u8 padding;
+	u8 data[0];
+} __attribute__ ((packed));
+
+/*
+ * this defines the PDR codes used to build PDAs as defined in document
+ * number 553155. The current implementation mirrors version 1.1 of the
+ * document and lists only PDRs supported by the ARM platform.
+ */
+
+/* common and choice range (0x0000 - 0x0fff) */
+#define PDR_END					0x0000
+#define PDR_MANUFACTURING_PART_NUMBER		0x0001
+#define PDR_PDA_VERSION				0x0002
+#define PDR_NIC_SERIAL_NUMBER			0x0003
+
+#define PDR_MAC_ADDRESS				0x0101
+#define PDR_REGULATORY_DOMAIN_LIST		0x0103
+#define PDR_TEMPERATURE_TYPE			0x0107
+
+#define PDR_PRISM_PCI_IDENTIFIER		0x0402
+
+/* ARM range (0x1000 - 0x1fff) */
+#define PDR_COUNTRY_INFORMATION			0x1000
+#define PDR_INTERFACE_LIST			0x1001
+#define PDR_HARDWARE_PLATFORM_COMPONENT_ID	0x1002
+#define PDR_OEM_NAME				0x1003
+#define PDR_PRODUCT_NAME			0x1004
+#define PDR_UTF8_OEM_NAME			0x1005
+#define PDR_UTF8_PRODUCT_NAME			0x1006
+#define PDR_COUNTRY_LIST			0x1007
+#define PDR_DEFAULT_COUNTRY			0x1008
+
+#define PDR_ANTENNA_GAIN			0x1100
+
+#define PDR_PRISM_INDIGO_PA_CALIBRATION_DATA	0x1901
+#define PDR_RSSI_LINEAR_APPROXIMATION		0x1902
+#define PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS	0x1903
+#define PDR_PRISM_PA_CAL_CURVE_DATA		0x1904
+#define PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND	0x1905
+#define PDR_PRISM_ZIF_TX_IQ_CALIBRATION		0x1906
+#define PDR_REGULATORY_POWER_LIMITS		0x1907
+#define PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED	0x1908
+#define PDR_RADIATED_TRANSMISSION_CORRECTION	0x1909
+#define PDR_PRISM_TX_IQ_CALIBRATION		0x190a
+
+/* reserved range (0x2000 - 0x7fff) */
+
+/* customer range (0x8000 - 0xffff) */
+#define PDR_BASEBAND_REGISTERS			0x8000
+#define PDR_PER_CHANNEL_BASEBAND_REGISTERS	0x8001
+
+/* stored in skb->cb */
+struct memrecord {
+	u32 start_addr;
+	u32 end_addr;
+	struct ieee80211_tx_control *control;
+};
+
+struct p54_eeprom_lm86 {
+	__le16 offset;
+	__le16 len;
+	u8 data[0];
+} __attribute__ ((packed));
+
+struct p54_rx_hdr {
+	__le16 magic;
+	__le16 len;
+	__le16 freq;
+	u8 antenna;
+	u8 rate;
+	u8 rssi;
+	u8 quality;
+	u16 unknown2;
+	__le64 timestamp;
+	u8 data[0];
+} __attribute__ ((packed));
+
+struct p54_frame_sent_hdr {
+	u8 status;
+	u8 retries;
+	__le16 ack_rssi;
+	__le16 seq;
+	u16 rate;
+} __attribute__ ((packed));
+
+struct p54_tx_control_allocdata {
+	u8 rateset[8];
+	u16 padding;
+	u8 wep_key_present;
+	u8 wep_key_len;
+	u8 wep_key[16];
+	__le32 frame_type;
+	u32 padding2;
+	__le16 magic4;
+	u8 antenna;
+	u8 output_power;
+	__le32 magic5;
+	u8 align[0];
+} __attribute__ ((packed));
+
+struct p54_tx_control_filter {
+	__le16 filter_type;
+	u8 dst[ETH_ALEN];
+	u8 src[ETH_ALEN];
+	u8 antenna;
+	u8 debug;
+	__le32 magic3;
+	u8 rates[8];	// FIXME: what's this for?
+	__le32 rx_addr;
+	__le16 max_rx;
+	__le16 rxhw;
+	__le16 magic8;
+	__le16 magic9;
+} __attribute__ ((packed));
+
+struct p54_tx_control_channel {
+	__le16 magic1;
+	__le16 magic2;
+	u8 padding1[20];
+	struct pda_iq_autocal_entry iq_autocal;
+	u8 pa_points_per_curve;
+	u8 val_barker;
+	u8 val_bpsk;
+	u8 val_qpsk;
+	u8 val_16qam;
+	u8 val_64qam;
+	struct pda_pa_curve_data_sample_rev1 curve_data[0];
+	/* additional padding/data after curve_data */
+} __attribute__ ((packed));
+
+struct p54_tx_control_led {
+	__le16 mode;
+	__le16 led_temporary;
+	__le16 led_permanent;
+	__le16 duration;
+} __attribute__ ((packed));
+
+struct p54_tx_vdcf_queues {
+	__le16 aifs;
+	__le16 cwmin;
+	__le16 cwmax;
+	__le16 txop;
+} __attribute__ ((packed));
+
+struct p54_tx_control_vdcf {
+	u8 padding;
+	u8 slottime;
+	u8 magic1;
+	u8 magic2;
+	struct p54_tx_vdcf_queues queue[8];
+	u8 pad2[4];
+	__le16 frameburst;
+} __attribute__ ((packed));
+
+static const struct ieee80211_rate p54_rates[] = {
+	{ .rate = 10,
+	  .val = 0,
+	  .val2 = 0x10,
+	  .flags = IEEE80211_RATE_CCK_2 },
+	{ .rate = 20,
+	  .val = 1,
+	  .val2 = 0x11,
+	  .flags = IEEE80211_RATE_CCK_2 },
+	{ .rate = 55,
+	  .val = 2,
+	  .val2 = 0x12,
+	  .flags = IEEE80211_RATE_CCK_2 },
+	{ .rate = 110,
+	  .val = 3,
+	  .val2 = 0x13,
+	  .flags = IEEE80211_RATE_CCK_2 },
+	{ .rate = 60,
+	  .val = 4,
+	  .flags = IEEE80211_RATE_OFDM },
+	{ .rate = 90,
+	  .val = 5,
+	  .flags = IEEE80211_RATE_OFDM },
+	{ .rate = 120,
+	  .val = 6,
+	  .flags = IEEE80211_RATE_OFDM },
+	{ .rate = 180,
+	  .val = 7,
+	  .flags = IEEE80211_RATE_OFDM },
+	{ .rate = 240,
+	  .val = 8,
+	  .flags = IEEE80211_RATE_OFDM },
+	{ .rate = 360,
+	  .val = 9,
+	  .flags = IEEE80211_RATE_OFDM },
+	{ .rate = 480,
+	  .val = 10,
+	  .flags = IEEE80211_RATE_OFDM },
+	{ .rate = 540,
+	  .val = 11,
+	  .flags = IEEE80211_RATE_OFDM },
+};
+
+// TODO: just generate this..
+static const struct ieee80211_channel p54_channels[] = {
+	{ .chan = 1,
+	  .freq = 2412},
+	{ .chan = 2,
+	  .freq = 2417},
+	{ .chan = 3,
+	  .freq = 2422},
+	{ .chan = 4,
+	  .freq = 2427},
+	{ .chan = 5,
+	  .freq = 2432},
+	{ .chan = 6,
+	  .freq = 2437},
+	{ .chan = 7,
+	  .freq = 2442},
+	{ .chan = 8,
+	  .freq = 2447},
+	{ .chan = 9,
+	  .freq = 2452},
+	{ .chan = 10,
+	  .freq = 2457},
+	{ .chan = 11,
+	  .freq = 2462},
+	{ .chan = 12,
+	  .freq = 2467},
+	{ .chan = 13,
+	  .freq = 2472},
+	{ .chan = 14,
+	  .freq = 2484}
+};
+
+#endif /* PRISM54COMMON_H */

drivers/net/wireless/p54pci.c

+
+/*
+ * Linux device driver for PCI based Prism54
+ *
+ * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
+ *
+ * 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/init.h>
+#include <linux/pci.h>
+#include <linux/firmware.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+#include <linux/completion.h>
+#include <net/mac80211.h>
+
+#include "p54.h"
+#include "p54pci.h"
+
+MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
+MODULE_DESCRIPTION("Prism54 PCI wireless driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("prism54pci");
+
+static struct pci_device_id p54p_table[] __devinitdata = {
+	/* 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) },
+};
+
+MODULE_DEVICE_TABLE(pci, p54p_table);
+
+static int p54p_upload_firmware(struct ieee80211_hw *dev)
+{
+	struct p54p_priv *priv = dev->priv;
+	const struct firmware *fw_entry = NULL;
+	__le32 reg;
+	int err;
+	u32 *data;
+	u32 remains, left, device_addr;
+
+	P54P_WRITE(int_enable, 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();
+
+	mdelay(50);
+
+	err = request_firmware(&fw_entry, "isl3886", &priv->pdev->dev);
+	if (err) {
+		printk(KERN_ERR "%s (prism54pci): cannot find firmware "
+		       "(isl3886)\n", pci_name(priv->pdev));
+		return err;
+	}
+
+	p54_parse_firmware(dev, fw_entry);
+
+	data = (u32 *) fw_entry->data;
+	remains = fw_entry->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);
+	}
+
+	release_firmware(fw_entry);
+
+	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);
+
+	return 0;
+}
+
+static irqreturn_t p54p_simple_interrupt(int irq, void *dev_id)
+{
+	struct p54p_priv *priv = (struct p54p_priv *) dev_id;
+	__le32 reg;
+
+	reg = P54P_READ(int_ident);
+	P54P_WRITE(int_ack, reg);
+
+	if (reg & P54P_READ(int_enable))
+		complete(&priv->boot_comp);
+
+	return IRQ_HANDLED;
+}
+
+static int p54p_read_eeprom(struct ieee80211_hw *dev)
+{
+	struct p54p_priv *priv = dev->priv;
+	int err;
+	struct p54_control_hdr *hdr;
+	void *eeprom;
+	dma_addr_t rx_mapping, tx_mapping;
+	u16 alen;
+
+	init_completion(&priv->boot_comp);
+	err = request_irq(priv->pdev->irq, &p54p_simple_interrupt,
+			  IRQF_SHARED, "prism54pci", priv);
+	if (err) {
+		printk(KERN_ERR "%s (prism54pci): failed to register IRQ handler\n",
+		       pci_name(priv->pdev));
+		return err;
+	}
+
+	eeprom = kmalloc(0x2010 + EEPROM_READBACK_LEN, GFP_KERNEL);
+	if (!eeprom) {
+		printk(KERN_ERR "%s (prism54pci): no memory for eeprom!\n",
+		       pci_name(priv->pdev));
+		err = -ENOMEM;
+		goto out;
+	}
+
+	memset(priv->ring_control, 0, sizeof(*priv->ring_control));
+	P54P_WRITE(ring_control_base, priv->ring_control_dma);
+	P54P_READ(ring_control_base);
+	udelay(10);
+
+	P54P_WRITE(int_enable, cpu_to_le32(ISL38XX_INT_IDENT_INIT));
+	P54P_READ(int_enable);
+	udelay(10);
+
+	P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_RESET));
+
+	if (!wait_for_completion_interruptible_timeout(&priv->boot_comp, HZ)) {
+		printk(KERN_ERR "%s (prism54pci): Cannot boot firmware!\n",
+		       pci_name(priv->pdev));
+		err = -EINVAL;
+		goto out;
+	}
+
+	P54P_WRITE(int_enable, cpu_to_le32(ISL38XX_INT_IDENT_UPDATE));
+	P54P_READ(int_enable);
+
+	hdr = eeprom + 0x2010;
+	p54_fill_eeprom_readback(hdr);
+	hdr->req_id = cpu_to_le32(priv->common.rx_start);
+
+	rx_mapping = pci_map_single(priv->pdev, eeprom,
+				    0x2010, PCI_DMA_FROMDEVICE);
+	tx_mapping = pci_map_single(priv->pdev, (void *)hdr,
+				    EEPROM_READBACK_LEN, PCI_DMA_TODEVICE);
+
+	priv->ring_control->rx_mgmt[0].host_addr = cpu_to_le32(rx_mapping);
+	priv->ring_control->rx_mgmt[0].len = cpu_to_le16(0x2010);
+	priv->ring_control->tx_data[0].host_addr = cpu_to_le32(tx_mapping);
+	priv->ring_control->tx_data[0].device_addr = hdr->req_id;
+	priv->ring_control->tx_data[0].len = cpu_to_le16(EEPROM_READBACK_LEN);
+
+	priv->ring_control->host_idx[2] = cpu_to_le32(1);
+	priv->ring_control->host_idx[1] = cpu_to_le32(1);
+
+	wmb();
+	mdelay(100);
+	P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_UPDATE));
+
+	wait_for_completion_interruptible_timeout(&priv->boot_comp, HZ);
+	wait_for_completion_interruptible_timeout(&priv->boot_comp, HZ);
+
+	pci_unmap_single(priv->pdev, tx_mapping,
+			 EEPROM_READBACK_LEN, PCI_DMA_TODEVICE);
+	pci_unmap_single(priv->pdev, rx_mapping,
+			 0x2010, PCI_DMA_FROMDEVICE);
+
+	alen = le16_to_cpu(priv->ring_control->rx_mgmt[0].len);
+	if (le32_to_cpu(priv->ring_control->device_idx[2]) != 1 ||
+	    alen < 0x10) {
+		printk(KERN_ERR "%s (prism54pci): Cannot read eeprom!\n",
+		       pci_name(priv->pdev));
+		err = -EINVAL;
+		goto out;
+	}
+
+	p54_parse_eeprom(dev, (u8 *)eeprom + 0x10, alen - 0x10);
+
+ out:
+	kfree(eeprom);
+	P54P_WRITE(int_enable, 0);
+	P54P_READ(int_enable);
+	udelay(10);
+	free_irq(priv->pdev->irq, priv);
+	P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_RESET));
+	return err;
+}
+
+static void p54p_refill_rx_ring(struct ieee80211_hw *dev)
+{
+	struct p54p_priv *priv = dev->priv;
+	u32 limit, host_idx, idx;
+
+	host_idx = le32_to_cpu(priv->ring_control->host_idx[0]);
+	limit = host_idx;
+	limit -= le32_to_cpu(priv->ring_control->device_idx[0]);
+	limit = ARRAY_SIZE(priv->ring_control->rx_data) - limit;
+
+	idx = host_idx % ARRAY_SIZE(priv->ring_control->rx_data);
+	while (limit-- > 1) {
+		struct p54p_desc *desc = &priv->ring_control->rx_data[idx];
+
+		if (!desc->host_addr) {
+			struct sk_buff *skb;
+			dma_addr_t mapping;
+			skb = dev_alloc_skb(MAX_RX_SIZE);
+			if (!skb)
+				break;
+
+			mapping = pci_map_single(priv->pdev,
+						 skb_tail_pointer(skb),
+						 MAX_RX_SIZE,
+						 PCI_DMA_FROMDEVICE);
+			desc->host_addr = cpu_to_le32(mapping);
+			desc->device_addr = 0;	// FIXME: necessary?
+			desc->len = cpu_to_le16(MAX_RX_SIZE);
+			desc->flags = 0;
+			priv->rx_buf[idx] = skb;
+		}
+
+		idx++;
+		host_idx++;
+		idx %= ARRAY_SIZE(priv->ring_control->rx_data);
+	}
+
+	wmb();
+	priv->ring_control->host_idx[0] = cpu_to_le32(host_idx);
+}
+
+static irqreturn_t p54p_interrupt(int irq, void *dev_id)
+{
+	struct ieee80211_hw *dev = dev_id;
+	struct p54p_priv *priv = dev->priv;
+	__le32 reg;
+
+	spin_lock(&priv->lock);
+	reg = P54P_READ(int_ident);
+	if (unlikely(reg == 0xFFFFFFFF)) {
+		spin_unlock(&priv->lock);
+		return IRQ_HANDLED;
+	}
+
+	P54P_WRITE(int_ack, reg);
+
+	reg &= P54P_READ(int_enable);
+
+	if (reg & cpu_to_le32(ISL38XX_INT_IDENT_UPDATE)) {
+		struct p54p_desc *desc;
+		u32 idx, i;
+		i = priv->tx_idx;
+		i %= ARRAY_SIZE(priv->ring_control->tx_data);
+		priv->tx_idx = idx = le32_to_cpu(priv->ring_control->device_idx[1]);
+		idx %= ARRAY_SIZE(priv->ring_control->tx_data);
+
+		while (i != idx) {
+			desc = &priv->ring_control->tx_data[i];
+			if (priv->tx_buf[i]) {
+				kfree(priv->tx_buf[i]);
+				priv->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;
+
+			i++;
+			i %= ARRAY_SIZE(priv->ring_control->tx_data);
+		}
+
+		i = priv->rx_idx;
+		i %= ARRAY_SIZE(priv->ring_control->rx_data);
+		priv->rx_idx = idx = le32_to_cpu(priv->ring_control->device_idx[0]);
+		idx %= ARRAY_SIZE(priv->ring_control->rx_data);
+		while (i != idx) {
+			u16 len;
+			struct sk_buff *skb;
+			desc = &priv->ring_control->rx_data[i];
+			len = le16_to_cpu(desc->len);
+			skb = priv->rx_buf[i];
+
+			skb_put(skb, len);
+
+			if (p54_rx(dev, skb)) {
+				pci_unmap_single(priv->pdev,
+						 le32_to_cpu(desc->host_addr),
+						 MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
+
+				priv->rx_buf[i] = NULL;
+				desc->host_addr = 0;
+			} else {
+				skb_trim(skb, 0);
+				desc->len = cpu_to_le16(MAX_RX_SIZE);
+			}
+
+			i++;
+			i %= ARRAY_SIZE(priv->ring_control->rx_data);
+		}
+
+		p54p_refill_rx_ring(dev);
+
+		wmb();
+		P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_UPDATE));
+	} else if (reg & cpu_to_le32(ISL38XX_INT_IDENT_INIT))
+		complete(&priv->boot_comp);
+
+	spin_unlock(&priv->lock);
+
+	return reg ? IRQ_HANDLED : IRQ_NONE;
+}
+
+static void p54p_tx(struct ieee80211_hw *dev, struct p54_control_hdr *data,
+		    size_t len, int free_on_tx)
+{
+	struct p54p_priv *priv = dev->priv;
+	unsigned long flags;
+	struct p54p_desc *desc;
+	dma_addr_t mapping;
+	u32 device_idx, idx, i;
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	device_idx = le32_to_cpu(priv->ring_control->device_idx[1]);
+	idx = le32_to_cpu(priv->ring_control->host_idx[1]);
+	i = idx % ARRAY_SIZE(priv->ring_control->tx_data);
+
+	mapping = pci_map_single(priv->pdev, data, len, PCI_DMA_TODEVICE);
+	desc = &priv->ring_control->tx_data[i];
+	desc->host_addr = cpu_to_le32(mapping);
+	desc->device_addr = data->req_id;
+	desc->len = cpu_to_le16(len);
+	desc->flags = 0;
+
+	wmb();
+	priv->ring_control->host_idx[1] = cpu_to_le32(idx + 1);
+
+	if (free_on_tx)
+		priv->tx_buf[i] = data;
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_UPDATE));
+	P54P_READ(dev_int);
+
+	/* FIXME: unlikely to happen because the device usually runs out of
+	   memory before we fill the ring up, but we can make it impossible */
+	if (idx - device_idx > ARRAY_SIZE(priv->ring_control->tx_data) - 2)
+		printk(KERN_INFO "%s: tx overflow.\n", wiphy_name(dev->wiphy));
+}
+
+static int p54p_open(struct ieee80211_hw *dev)
+{
+	struct p54p_priv *priv = dev->priv;
+	int err;
+
+	init_completion(&priv->boot_comp);
+	err = request_irq(priv->pdev->irq, &p54p_interrupt,
+			  IRQF_SHARED, "prism54pci", dev);
+	if (err) {
+		printk(KERN_ERR "%s: failed to register IRQ handler\n",
+		       wiphy_name(dev->wiphy));
+		return err;
+	}
+
+	memset(priv->ring_control, 0, sizeof(*priv->ring_control));
+	priv->rx_idx = priv->tx_idx = 0;
+	p54p_refill_rx_ring(dev);
+
+	p54p_upload_firmware(dev);
+
+	P54P_WRITE(ring_control_base, 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);
+
+	if (!wait_for_completion_interruptible_timeout(&priv->boot_comp, HZ)) {
+		printk(KERN_ERR "%s: Cannot boot firmware!\n",
+		       wiphy_name(dev->wiphy));
+		free_irq(priv->pdev->irq, dev);
+		return -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_stop(struct ieee80211_hw *dev)
+{
+	struct p54p_priv *priv = dev->priv;
+	unsigned int i;
+	struct p54p_desc *desc;
+
+	P54P_WRITE(int_enable, 0);
+	P54P_READ(int_enable);
+	udelay(10);
+
+	free_irq(priv->pdev->irq, dev);
+
+	P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_RESET));
+
+	for (i = 0; i < ARRAY_SIZE(priv->rx_buf); i++) {
+		desc = &priv->ring_control->rx_data[i];
+		if (desc->host_addr)
+			pci_unmap_single(priv->pdev, le32_to_cpu(desc->host_addr),
+					 MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
+		kfree_skb(priv->rx_buf[i]);
+		priv->rx_buf[i] = NULL;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(priv->tx_buf); i++) {
+		desc = &priv->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);
+
+		kfree(priv->tx_buf[i]);
+		priv->tx_buf[i] = NULL;
+	}
+
+	memset(priv->ring_control, 0, sizeof(*priv->ring_control));
+}
+
+static int __devinit 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;
+	DECLARE_MAC_BUF(mac);
+
+	err = pci_enable_device(pdev);
+	if (err) {
+		printk(KERN_ERR "%s (prism54pci): Cannot enable new PCI device\n",
+		       pci_name(pdev));
+		return err;
+	}
+
+	mem_addr = pci_resource_start(pdev, 0);
+	mem_len = pci_resource_len(pdev, 0);
+	if (mem_len < sizeof(struct p54p_csr)) {
+		printk(KERN_ERR "%s (prism54pci): Too short PCI resources\n",
+		       pci_name(pdev));
+		pci_disable_device(pdev);
+		return err;
+	}
+
+	err = pci_request_regions(pdev, "prism54pci");
+	if (err) {
+		printk(KERN_ERR "%s (prism54pci): Cannot obtain PCI resources\n",
+		       pci_name(pdev));
+		return err;
+	}
+
+	if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) ||
+	    pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)) {
+		printk(KERN_ERR "%s (prism54pci): No suitable DMA available\n",
+		       pci_name(pdev));
+		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) {
+		printk(KERN_ERR "%s (prism54pci): ieee80211 alloc failed\n",
+		       pci_name(pdev));
+		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) {
+		printk(KERN_ERR "%s (prism54pci): Cannot map device memory\n",
+		       pci_name(pdev));
+		err = -EINVAL;	// TODO: use a better error code?
+		goto err_free_dev;
+	}
+
+	priv->ring_control = pci_alloc_consistent(pdev, sizeof(*priv->ring_control),
+						  &priv->ring_control_dma);
+	if (!priv->ring_control) {
+		printk(KERN_ERR "%s (prism54pci): Cannot allocate rings\n",
+		       pci_name(pdev));
+		err = -ENOMEM;
+		goto err_iounmap;
+	}
+	memset(priv->ring_control, 0, sizeof(*priv->ring_control));
+
+	err = p54p_upload_firmware(dev);
+	if (err)
+		goto err_free_desc;
+
+	err = p54p_read_eeprom(dev);
+	if (err)
+		goto err_free_desc;
+
+	priv->common.open = p54p_open;
+	priv->common.stop = p54p_stop;
+	priv->common.tx = p54p_tx;
+
+	spin_lock_init(&priv->lock);
+
+	err = ieee80211_register_hw(dev);
+	if (err) {
+		printk(KERN_ERR "%s (prism54pci): Cannot register netdevice\n",
+		       pci_name(pdev));
+		goto err_free_common;
+	}
+
+	printk(KERN_INFO "%s: hwaddr %s, isl38%02x\n",
+	       wiphy_name(dev->wiphy),
+	       print_mac(mac, dev->wiphy->perm_addr),
+	       priv->common.version);
+
+	return 0;
+
+ err_free_common:
+	p54_free_common(dev);
+
+ err_free_desc:
+	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);
+	ieee80211_free_hw(dev);
+
+ err_free_reg:
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+	return err;
+}
+
+static void __devexit p54p_remove(struct pci_dev *pdev)
+{
+	struct ieee80211_hw *dev = pci_get_drvdata(pdev);
+	struct p54p_priv *priv;
+
+	if (!dev)
+		return;
+
+	ieee80211_unregister_hw(dev);
+	priv = dev->priv;
+	pci_free_consistent(pdev, sizeof(*priv->ring_control),
+			    priv->ring_control, priv->ring_control_dma);
+	p54_free_common(dev);
+	iounmap(priv->map);
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+	ieee80211_free_hw(dev);
+}
+
+#ifdef CONFIG_PM
+static int p54p_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+	struct ieee80211_hw *dev = pci_get_drvdata(pdev);
+	struct p54p_priv *priv = dev->priv;
+
+	if (priv->common.mode != IEEE80211_IF_TYPE_MGMT) {
+		ieee80211_stop_queues(dev);
+		p54p_stop(dev);
+	}
+
+	pci_save_state(pdev);
+	pci_set_power_state(pdev, pci_choose_state(pdev, state));
+	return 0;
+}
+
+static int p54p_resume(struct pci_dev *pdev)
+{
+	struct ieee80211_hw *dev = pci_get_drvdata(pdev);
+	struct p54p_priv *priv = dev->priv;
+
+	pci_set_power_state(pdev, PCI_D0);
+	pci_restore_state(pdev);
+
+	if (priv->common.mode != IEEE80211_IF_TYPE_MGMT) {
+		p54p_open(dev);
+		ieee80211_start_queues(dev);
+	}
+
+	return 0;
+}
+#endif /* CONFIG_PM */
+
+static struct pci_driver p54p_driver = {
+	.name		= "prism54pci",
+	.id_table	= p54p_table,
+	.probe		= p54p_probe,
+	.remove		= __devexit_p(p54p_remove),
+#ifdef CONFIG_PM
+	.suspend	= p54p_suspend,
+	.resume		= p54p_resume,
+#endif /* CONFIG_PM */
+};
+
+static int __init p54p_init(void)
+{
+	return pci_register_driver(&p54p_driver);
+}
+
+static void __exit p54p_exit(void)
+{
+	pci_unregister_driver(&p54p_driver);
+}
+
+module_init(p54p_init);
+module_exit(p54p_exit);

drivers/net/wireless/p54pci.h

+#ifndef PRISM54PCI_H
+#define PRISM54PCI_H
+
+/*
+ * Defines for PCI based mac80211 Prism54 driver
+ *
+ * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
+ *
+ * Based on the islsm (softmac prism54) driver, which is:
+ * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, 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.
+ */
+
+/* Device Interrupt register bits */
+#define ISL38XX_DEV_INT_RESET                   0x0001
+#define ISL38XX_DEV_INT_UPDATE                  0x0002
+#define ISL38XX_DEV_INT_WAKEUP                  0x0008
+#define ISL38XX_DEV_INT_SLEEP                   0x0010
+#define ISL38XX_DEV_INT_ABORT                   0x0020
+/* these two only used in USB */
+#define ISL38XX_DEV_INT_DATA                    0x0040
+#define ISL38XX_DEV_INT_MGMT                    0x0080
+
+#define ISL38XX_DEV_INT_PCIUART_CTS             0x4000
+#define ISL38XX_DEV_INT_PCIUART_DR              0x8000
+
+/* Interrupt Identification/Acknowledge/Enable register bits */
+#define ISL38XX_INT_IDENT_UPDATE		0x0002
+#define ISL38XX_INT_IDENT_INIT			0x0004
+#define ISL38XX_INT_IDENT_WAKEUP		0x0008
+#define ISL38XX_INT_IDENT_SLEEP			0x0010
+#define ISL38XX_INT_IDENT_PCIUART_CTS		0x4000
+#define ISL38XX_INT_IDENT_PCIUART_DR		0x8000
+
+/* Control/Status register bits */
+#define ISL38XX_CTRL_STAT_SLEEPMODE		0x00000200
+#define ISL38XX_CTRL_STAT_CLKRUN		0x00800000
+#define ISL38XX_CTRL_STAT_RESET			0x10000000
+#define ISL38XX_CTRL_STAT_RAMBOOT		0x20000000
+#define ISL38XX_CTRL_STAT_STARTHALTED		0x40000000
+#define ISL38XX_CTRL_STAT_HOST_OVERRIDE		0x80000000
+
+struct p54p_csr {
+	__le32 dev_int;
+	u8 unused_1[12];
+	__le32 int_ident;
+	__le32 int_ack;
+	__le32 int_enable;
+	u8 unused_2[4];
+	union {
+		__le32 ring_control_base;
+		__le32 gen_purp_com[2];
+	};
+	u8 unused_3[8];
+	__le32 direct_mem_base;
+	u8 unused_4[44];
+	__le32 dma_addr;
+	__le32 dma_len;
+	__le32 dma_ctrl;
+	u8 unused_5[12];
+	__le32 ctrl_stat;
+	u8 unused_6[1924];
+	u8 cardbus_cis[0x800];
+	u8 direct_mem_win[0x1000];
+} __attribute__ ((packed));
+
+/* usb backend only needs the register defines above */
+#ifndef PRISM54USB_H
+struct p54p_desc {
+	__le32 host_addr;
+	__le32 device_addr;
+	__le16 len;
+	__le16 flags;
+} __attribute__ ((packed));
+
+struct p54p_ring_control {
+	__le32 host_idx[4];
+	__le32 device_idx[4];
+	struct p54p_desc rx_data[8];
+	struct p54p_desc tx_data[32];
+	struct p54p_desc rx_mgmt[4];
+	struct p54p_desc tx_mgmt[4];
+} __attribute__ ((packed));
+
+#define P54P_READ(r) __raw_readl(&priv->map->r)
+#define P54P_WRITE(r, val) __raw_writel((__force u32)(val), &priv->map->r)
+
+struct p54p_priv {
+	struct p54_common common;
+	struct pci_dev *pdev;
+	struct p54p_csr __iomem *map;
+
+	spinlock_t lock;
+	struct p54p_ring_control *ring_control;
+	dma_addr_t ring_control_dma;
+	u32 rx_idx, tx_idx;
+	struct sk_buff *rx_buf[8];
+	void *tx_buf[32];
+	struct completion boot_comp;
+};
+
+#endif /* PRISM54USB_H */
+#endif /* PRISM54PCI_H */

drivers/net/wireless/p54usb.h

+#ifndef PRISM54USB_H
+#define PRISM54USB_H
+
+/*
+ * Defines for USB based mac80211 Prism54 driver
+ *
+ * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
+ *
+ * Based on the islsm (softmac prism54) driver, which is:
+ * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, 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.
+ */
+
+/* for isl3886 register definitions used on ver 1 devices */
+#include "p54pci.h"
+#include "net2280.h"
+
+/* pci */
+#define NET2280_BASE		0x10000000
+#define NET2280_BASE2		0x20000000
+
+/* gpio */
+#define P54U_BRG_POWER_UP	(1 << GPIO0_DATA)
+#define P54U_BRG_POWER_DOWN	(1 << GPIO1_DATA)
+
+/* devinit */
+#define NET2280_CLK_4Mhz	(15 << LOCAL_CLOCK_FREQUENCY)
+#define NET2280_CLK_30Mhz	(2 << LOCAL_CLOCK_FREQUENCY)
+#define NET2280_CLK_60Mhz	(1 << LOCAL_CLOCK_FREQUENCY)
+#define NET2280_CLK_STOP	(0 << LOCAL_CLOCK_FREQUENCY)
+#define NET2280_PCI_ENABLE	(1 << PCI_ENABLE)
+#define NET2280_PCI_SOFT_RESET	(1 << PCI_SOFT_RESET)
+
+/* endpoints */
+#define NET2280_CLEAR_NAK_OUT_PACKETS_MODE	(1 << CLEAR_NAK_OUT_PACKETS_MODE)
+#define NET2280_FIFO_FLUSH			(1 << FIFO_FLUSH)
+
+/* irq */
+#define NET2280_USB_INTERRUPT_ENABLE		(1 << USB_INTERRUPT_ENABLE)
+#define NET2280_PCI_INTA_INTERRUPT		(1 << PCI_INTA_INTERRUPT)
+#define NET2280_PCI_INTA_INTERRUPT_ENABLE	(1 << PCI_INTA_INTERRUPT_ENABLE)
+
+/* registers */
+#define NET2280_DEVINIT		0x00
+#define NET2280_USBIRQENB1	0x24
+#define NET2280_IRQSTAT1	0x2c
+#define NET2280_FIFOCTL         0x38
+#define NET2280_GPIOCTL		0x50
+#define NET2280_RELNUM		0x88
+#define NET2280_EPA_RSP		0x324
+#define NET2280_EPA_STAT	0x32c
+#define NET2280_EPB_STAT	0x34c
+#define NET2280_EPC_RSP		0x364
+#define NET2280_EPC_STAT	0x36c
+#define NET2280_EPD_STAT	0x38c
+
+#define NET2280_EPA_CFG     0x320
+#define NET2280_EPB_CFG     0x340
+#define NET2280_EPC_CFG     0x360
+#define NET2280_EPD_CFG     0x380
+#define NET2280_EPE_CFG     0x3A0
+#define NET2280_EPF_CFG     0x3C0
+#define P54U_DEV_BASE 0x40000000
+
+struct net2280_tx_hdr {
+	__le32 device_addr;
+	__le16 len;
+	__le16 follower;	/* ? */
+	u8 padding[8];
+} __attribute__((packed));
+
+/* Some flags for the isl hardware registers controlling DMA inside the
+ * chip */
+#define ISL38XX_DMA_STATUS_DONE			0x00000001
+#define ISL38XX_DMA_STATUS_READY		0x00000002
+#define NET2280_EPA_FIFO_PCI_ADDR		0x20000000
+#define ISL38XX_DMA_MASTER_CONTROL_TRIGGER	0x00000004
+
+enum net2280_op_type {
+	NET2280_BRG_U32		= 0x001F,
+	NET2280_BRG_CFG_U32	= 0x000F,
+	NET2280_BRG_CFG_U16	= 0x0003,
+	NET2280_DEV_U32		= 0x080F,
+	NET2280_DEV_CFG_U32	= 0x088F,
+	NET2280_DEV_CFG_U16	= 0x0883
+};
+
+#define P54U_FW_BLOCK 2048
+
+#define X2_SIGNATURE "x2  "
+#define X2_SIGNATURE_SIZE 4
+
+struct x2_header {
+	u8 signature[X2_SIGNATURE_SIZE];
+	__le32 fw_load_addr;
+	__le32 fw_length;
+	__le32 crc;
+} __attribute__((packed));
+
+/* pipes 3 and 4 are not used by the driver */
+#define P54U_PIPE_NUMBER 9
+
+enum p54u_pipe_addr {
+        P54U_PIPE_DATA = 0x01,
+        P54U_PIPE_MGMT = 0x02,
+        P54U_PIPE_3 = 0x03,
+        P54U_PIPE_4 = 0x04,
+        P54U_PIPE_BRG = 0x0d,
+        P54U_PIPE_DEV = 0x0e,
+        P54U_PIPE_INT = 0x0f
+};
+
+struct p54u_rx_info {
+	struct urb *urb;
+	struct ieee80211_hw *dev;
+};
+
+struct p54u_priv {
+	struct p54_common common;
+	struct usb_device *udev;
+	enum {
+		P54U_NET2280 = 0,
+		P54U_3887
+	} hw_type;
+
+	spinlock_t lock;
+	struct sk_buff_head rx_queue;
+};
+
+#endif /* PRISM54USB_H */