[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/net2280.h

+#ifndef NET2280_H
+#define NET2280_H
+/*
+ * NetChip 2280 high/full speed USB device controller.
+ * Unlike many such controllers, this one talks PCI.
+ */
+
+/*
+ * Copyright (C) 2002 NetChip Technology, Inc. (http://www.netchip.com)
+ * Copyright (C) 2003 David Brownell
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*-------------------------------------------------------------------------*/
+
+/* NET2280 MEMORY MAPPED REGISTERS
+ *
+ * The register layout came from the chip documentation, and the bit
+ * number definitions were extracted from chip specification.
+ *
+ * Use the shift operator ('<<') to build bit masks, with readl/writel
+ * to access the registers through PCI.
+ */
+
+/* main registers, BAR0 + 0x0000 */
+struct net2280_regs {
+	// offset 0x0000
+	__le32                  devinit;
+#define     LOCAL_CLOCK_FREQUENCY                               8
+#define     FORCE_PCI_RESET                                     7
+#define     PCI_ID                                              6
+#define     PCI_ENABLE                                          5
+#define     FIFO_SOFT_RESET                                     4
+#define     CFG_SOFT_RESET                                      3
+#define     PCI_SOFT_RESET                                      2
+#define     USB_SOFT_RESET                                      1
+#define     M8051_RESET                                         0
+	__le32                  eectl;
+#define     EEPROM_ADDRESS_WIDTH                                23
+#define     EEPROM_CHIP_SELECT_ACTIVE                           22
+#define     EEPROM_PRESENT                                      21
+#define     EEPROM_VALID                                        20
+#define     EEPROM_BUSY                                         19
+#define     EEPROM_CHIP_SELECT_ENABLE                           18
+#define     EEPROM_BYTE_READ_START                              17
+#define     EEPROM_BYTE_WRITE_START                             16
+#define     EEPROM_READ_DATA                                    8
+#define     EEPROM_WRITE_DATA                                   0
+	__le32                  eeclkfreq;
+	u32                     _unused0;
+	// offset 0x0010
+
+	__le32                  pciirqenb0;	/* interrupt PCI master ... */
+#define     SETUP_PACKET_INTERRUPT_ENABLE                       7
+#define     ENDPOINT_F_INTERRUPT_ENABLE                         6
+#define     ENDPOINT_E_INTERRUPT_ENABLE                         5
+#define     ENDPOINT_D_INTERRUPT_ENABLE                         4
+#define     ENDPOINT_C_INTERRUPT_ENABLE                         3
+#define     ENDPOINT_B_INTERRUPT_ENABLE                         2
+#define     ENDPOINT_A_INTERRUPT_ENABLE                         1
+#define     ENDPOINT_0_INTERRUPT_ENABLE                         0
+	__le32                  pciirqenb1;
+#define     PCI_INTERRUPT_ENABLE                                31
+#define     POWER_STATE_CHANGE_INTERRUPT_ENABLE                 27
+#define     PCI_ARBITER_TIMEOUT_INTERRUPT_ENABLE                26
+#define     PCI_PARITY_ERROR_INTERRUPT_ENABLE                   25
+#define     PCI_MASTER_ABORT_RECEIVED_INTERRUPT_ENABLE          20
+#define     PCI_TARGET_ABORT_RECEIVED_INTERRUPT_ENABLE          19
+#define     PCI_TARGET_ABORT_ASSERTED_INTERRUPT_ENABLE          18
+#define     PCI_RETRY_ABORT_INTERRUPT_ENABLE                    17
+#define     PCI_MASTER_CYCLE_DONE_INTERRUPT_ENABLE              16
+#define     GPIO_INTERRUPT_ENABLE                               13
+#define     DMA_D_INTERRUPT_ENABLE                              12
+#define     DMA_C_INTERRUPT_ENABLE                              11
+#define     DMA_B_INTERRUPT_ENABLE                              10
+#define     DMA_A_INTERRUPT_ENABLE                              9
+#define     EEPROM_DONE_INTERRUPT_ENABLE                        8
+#define     VBUS_INTERRUPT_ENABLE                               7
+#define     CONTROL_STATUS_INTERRUPT_ENABLE                     6
+#define     ROOT_PORT_RESET_INTERRUPT_ENABLE                    4
+#define     SUSPEND_REQUEST_INTERRUPT_ENABLE                    3
+#define     SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE             2
+#define     RESUME_INTERRUPT_ENABLE                             1
+#define     SOF_INTERRUPT_ENABLE                                0
+	__le32                  cpu_irqenb0;	/* ... or onboard 8051 */
+#define     SETUP_PACKET_INTERRUPT_ENABLE                       7
+#define     ENDPOINT_F_INTERRUPT_ENABLE                         6
+#define     ENDPOINT_E_INTERRUPT_ENABLE                         5
+#define     ENDPOINT_D_INTERRUPT_ENABLE                         4
+#define     ENDPOINT_C_INTERRUPT_ENABLE                         3
+#define     ENDPOINT_B_INTERRUPT_ENABLE                         2
+#define     ENDPOINT_A_INTERRUPT_ENABLE                         1
+#define     ENDPOINT_0_INTERRUPT_ENABLE                         0
+	__le32                  cpu_irqenb1;
+#define     CPU_INTERRUPT_ENABLE                                31
+#define     POWER_STATE_CHANGE_INTERRUPT_ENABLE                 27
+#define     PCI_ARBITER_TIMEOUT_INTERRUPT_ENABLE                26
+#define     PCI_PARITY_ERROR_INTERRUPT_ENABLE                   25
+#define     PCI_INTA_INTERRUPT_ENABLE                           24
+#define     PCI_PME_INTERRUPT_ENABLE                            23
+#define     PCI_SERR_INTERRUPT_ENABLE                           22
+#define     PCI_PERR_INTERRUPT_ENABLE                           21
+#define     PCI_MASTER_ABORT_RECEIVED_INTERRUPT_ENABLE          20
+#define     PCI_TARGET_ABORT_RECEIVED_INTERRUPT_ENABLE          19
+#define     PCI_RETRY_ABORT_INTERRUPT_ENABLE                    17
+#define     PCI_MASTER_CYCLE_DONE_INTERRUPT_ENABLE              16
+#define     GPIO_INTERRUPT_ENABLE                               13
+#define     DMA_D_INTERRUPT_ENABLE                              12
+#define     DMA_C_INTERRUPT_ENABLE                              11
+#define     DMA_B_INTERRUPT_ENABLE                              10
+#define     DMA_A_INTERRUPT_ENABLE                              9
+#define     EEPROM_DONE_INTERRUPT_ENABLE                        8
+#define     VBUS_INTERRUPT_ENABLE                               7
+#define     CONTROL_STATUS_INTERRUPT_ENABLE                     6
+#define     ROOT_PORT_RESET_INTERRUPT_ENABLE                    4
+#define     SUSPEND_REQUEST_INTERRUPT_ENABLE                    3
+#define     SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE             2
+#define     RESUME_INTERRUPT_ENABLE                             1
+#define     SOF_INTERRUPT_ENABLE                                0
+
+	// offset 0x0020
+	u32                     _unused1;
+	__le32                  usbirqenb1;
+#define     USB_INTERRUPT_ENABLE                                31
+#define     POWER_STATE_CHANGE_INTERRUPT_ENABLE                 27
+#define     PCI_ARBITER_TIMEOUT_INTERRUPT_ENABLE                26
+#define     PCI_PARITY_ERROR_INTERRUPT_ENABLE                   25
+#define     PCI_INTA_INTERRUPT_ENABLE                           24
+#define     PCI_PME_INTERRUPT_ENABLE                            23
+#define     PCI_SERR_INTERRUPT_ENABLE                           22
+#define     PCI_PERR_INTERRUPT_ENABLE                           21
+#define     PCI_MASTER_ABORT_RECEIVED_INTERRUPT_ENABLE          20
+#define     PCI_TARGET_ABORT_RECEIVED_INTERRUPT_ENABLE          19
+#define     PCI_RETRY_ABORT_INTERRUPT_ENABLE                    17
+#define     PCI_MASTER_CYCLE_DONE_INTERRUPT_ENABLE              16
+#define     GPIO_INTERRUPT_ENABLE                               13
+#define     DMA_D_INTERRUPT_ENABLE                              12
+#define     DMA_C_INTERRUPT_ENABLE                              11
+#define     DMA_B_INTERRUPT_ENABLE                              10
+#define     DMA_A_INTERRUPT_ENABLE                              9
+#define     EEPROM_DONE_INTERRUPT_ENABLE                        8
+#define     VBUS_INTERRUPT_ENABLE                               7
+#define     CONTROL_STATUS_INTERRUPT_ENABLE                     6
+#define     ROOT_PORT_RESET_INTERRUPT_ENABLE                    4
+#define     SUSPEND_REQUEST_INTERRUPT_ENABLE                    3
+#define     SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE             2
+#define     RESUME_INTERRUPT_ENABLE                             1
+#define     SOF_INTERRUPT_ENABLE                                0
+	__le32                  irqstat0;
+#define     INTA_ASSERTED                                       12
+#define     SETUP_PACKET_INTERRUPT                              7
+#define     ENDPOINT_F_INTERRUPT                                6
+#define     ENDPOINT_E_INTERRUPT                                5
+#define     ENDPOINT_D_INTERRUPT                                4
+#define     ENDPOINT_C_INTERRUPT                                3
+#define     ENDPOINT_B_INTERRUPT                                2
+#define     ENDPOINT_A_INTERRUPT                                1
+#define     ENDPOINT_0_INTERRUPT                                0
+	__le32                  irqstat1;
+#define     POWER_STATE_CHANGE_INTERRUPT                        27
+#define     PCI_ARBITER_TIMEOUT_INTERRUPT                       26
+#define     PCI_PARITY_ERROR_INTERRUPT                          25
+#define     PCI_INTA_INTERRUPT                                  24
+#define     PCI_PME_INTERRUPT                                   23
+#define     PCI_SERR_INTERRUPT                                  22
+#define     PCI_PERR_INTERRUPT                                  21
+#define     PCI_MASTER_ABORT_RECEIVED_INTERRUPT                 20
+#define     PCI_TARGET_ABORT_RECEIVED_INTERRUPT                 19
+#define     PCI_RETRY_ABORT_INTERRUPT                           17
+#define     PCI_MASTER_CYCLE_DONE_INTERRUPT                     16
+#define     GPIO_INTERRUPT                                      13
+#define     DMA_D_INTERRUPT                                     12
+#define     DMA_C_INTERRUPT                                     11
+#define     DMA_B_INTERRUPT                                     10
+#define     DMA_A_INTERRUPT                                     9
+#define     EEPROM_DONE_INTERRUPT                               8
+#define     VBUS_INTERRUPT                                      7
+#define     CONTROL_STATUS_INTERRUPT                            6
+#define     ROOT_PORT_RESET_INTERRUPT                           4
+#define     SUSPEND_REQUEST_INTERRUPT                           3
+#define     SUSPEND_REQUEST_CHANGE_INTERRUPT                    2
+#define     RESUME_INTERRUPT                                    1
+#define     SOF_INTERRUPT                                       0
+	// offset 0x0030
+	__le32                  idxaddr;
+	__le32                  idxdata;
+	__le32                  fifoctl;
+#define     PCI_BASE2_RANGE                                     16
+#define     IGNORE_FIFO_AVAILABILITY                            3
+#define     PCI_BASE2_SELECT                                    2
+#define     FIFO_CONFIGURATION_SELECT                           0
+	u32                     _unused2;
+	// offset 0x0040
+	__le32                  memaddr;
+#define     START                                               28
+#define     DIRECTION                                           27
+#define     FIFO_DIAGNOSTIC_SELECT                              24
+#define     MEMORY_ADDRESS                                      0
+	__le32                  memdata0;
+	__le32                  memdata1;
+	u32                     _unused3;
+	// offset 0x0050
+	__le32                  gpioctl;
+#define     GPIO3_LED_SELECT                                    12
+#define     GPIO3_INTERRUPT_ENABLE                              11
+#define     GPIO2_INTERRUPT_ENABLE                              10
+#define     GPIO1_INTERRUPT_ENABLE                              9
+#define     GPIO0_INTERRUPT_ENABLE                              8
+#define     GPIO3_OUTPUT_ENABLE                                 7
+#define     GPIO2_OUTPUT_ENABLE                                 6
+#define     GPIO1_OUTPUT_ENABLE                                 5
+#define     GPIO0_OUTPUT_ENABLE                                 4
+#define     GPIO3_DATA                                          3
+#define     GPIO2_DATA                                          2
+#define     GPIO1_DATA                                          1
+#define     GPIO0_DATA                                          0
+	__le32                  gpiostat;
+#define     GPIO3_INTERRUPT                                     3
+#define     GPIO2_INTERRUPT                                     2
+#define     GPIO1_INTERRUPT                                     1
+#define     GPIO0_INTERRUPT                                     0
+} __attribute__ ((packed));
+
+/* usb control, BAR0 + 0x0080 */
+struct net2280_usb_regs {
+	// offset 0x0080
+	__le32                  stdrsp;
+#define     STALL_UNSUPPORTED_REQUESTS                          31
+#define     SET_TEST_MODE                                       16
+#define     GET_OTHER_SPEED_CONFIGURATION                       15
+#define     GET_DEVICE_QUALIFIER                                14
+#define     SET_ADDRESS                                         13
+#define     ENDPOINT_SET_CLEAR_HALT                             12
+#define     DEVICE_SET_CLEAR_DEVICE_REMOTE_WAKEUP               11
+#define     GET_STRING_DESCRIPTOR_2                             10
+#define     GET_STRING_DESCRIPTOR_1                             9
+#define     GET_STRING_DESCRIPTOR_0                             8
+#define     GET_SET_INTERFACE                                   6
+#define     GET_SET_CONFIGURATION                               5
+#define     GET_CONFIGURATION_DESCRIPTOR                        4
+#define     GET_DEVICE_DESCRIPTOR                               3
+#define     GET_ENDPOINT_STATUS                                 2
+#define     GET_INTERFACE_STATUS                                1
+#define     GET_DEVICE_STATUS                                   0
+	__le32                  prodvendid;
+#define     PRODUCT_ID                                          16
+#define     VENDOR_ID                                           0
+	__le32                  relnum;
+	__le32                  usbctl;
+#define     SERIAL_NUMBER_INDEX                                 16
+#define     PRODUCT_ID_STRING_ENABLE                            13
+#define     VENDOR_ID_STRING_ENABLE                             12
+#define     USB_ROOT_PORT_WAKEUP_ENABLE                         11
+#define     VBUS_PIN                                            10
+#define     TIMED_DISCONNECT                                    9
+#define     SUSPEND_IMMEDIATELY                                 7
+#define     SELF_POWERED_USB_DEVICE                             6
+#define     REMOTE_WAKEUP_SUPPORT                               5
+#define     PME_POLARITY                                        4
+#define     USB_DETECT_ENABLE                                   3
+#define     PME_WAKEUP_ENABLE                                   2
+#define     DEVICE_REMOTE_WAKEUP_ENABLE                         1
+#define     SELF_POWERED_STATUS                                 0
+	// offset 0x0090
+	__le32                  usbstat;
+#define     HIGH_SPEED                                          7
+#define     FULL_SPEED                                          6
+#define     GENERATE_RESUME                                     5
+#define     GENERATE_DEVICE_REMOTE_WAKEUP                       4
+	__le32                  xcvrdiag;
+#define     FORCE_HIGH_SPEED_MODE                               31
+#define     FORCE_FULL_SPEED_MODE                               30
+#define     USB_TEST_MODE                                       24
+#define     LINE_STATE                                          16
+#define     TRANSCEIVER_OPERATION_MODE                          2
+#define     TRANSCEIVER_SELECT                                  1
+#define     TERMINATION_SELECT                                  0
+	__le32                  setup0123;
+	__le32                  setup4567;
+	// offset 0x0090
+	u32                     _unused0;
+	__le32                  ouraddr;
+#define     FORCE_IMMEDIATE                                     7
+#define     OUR_USB_ADDRESS                                     0
+	__le32                  ourconfig;
+} __attribute__ ((packed));
+
+/* pci control, BAR0 + 0x0100 */
+struct net2280_pci_regs {
+	// offset 0x0100
+	__le32                  pcimstctl;
+#define     PCI_ARBITER_PARK_SELECT                             13
+#define     PCI_MULTI LEVEL_ARBITER                             12
+#define     PCI_RETRY_ABORT_ENABLE                              11
+#define     DMA_MEMORY_WRITE_AND_INVALIDATE_ENABLE              10
+#define     DMA_READ_MULTIPLE_ENABLE                            9
+#define     DMA_READ_LINE_ENABLE                                8
+#define     PCI_MASTER_COMMAND_SELECT                           6
+#define         MEM_READ_OR_WRITE                                   0
+#define         IO_READ_OR_WRITE                                    1
+#define         CFG_READ_OR_WRITE                                   2
+#define     PCI_MASTER_START                                    5
+#define     PCI_MASTER_READ_WRITE                               4
+#define         PCI_MASTER_WRITE                                    0
+#define         PCI_MASTER_READ                                     1
+#define     PCI_MASTER_BYTE_WRITE_ENABLES                       0
+	__le32                  pcimstaddr;
+	__le32                  pcimstdata;
+	__le32                  pcimststat;
+#define     PCI_ARBITER_CLEAR                                   2
+#define     PCI_EXTERNAL_ARBITER                                1
+#define     PCI_HOST_MODE                                       0
+} __attribute__ ((packed));
+
+/* dma control, BAR0 + 0x0180 ... array of four structs like this,
+ * for channels 0..3.  see also struct net2280_dma:  descriptor
+ * that can be loaded into some of these registers.
+ */
+struct net2280_dma_regs {	/* [11.7] */
+	// offset 0x0180, 0x01a0, 0x01c0, 0x01e0,
+	__le32                  dmactl;
+#define     DMA_SCATTER_GATHER_DONE_INTERRUPT_ENABLE            25
+#define     DMA_CLEAR_COUNT_ENABLE                              21
+#define     DESCRIPTOR_POLLING_RATE                             19
+#define         POLL_CONTINUOUS                                     0
+#define         POLL_1_USEC                                         1
+#define         POLL_100_USEC                                       2
+#define         POLL_1_MSEC                                         3
+#define     DMA_VALID_BIT_POLLING_ENABLE                        18
+#define     DMA_VALID_BIT_ENABLE                                17
+#define     DMA_SCATTER_GATHER_ENABLE                           16
+#define     DMA_OUT_AUTO_START_ENABLE                           4
+#define     DMA_PREEMPT_ENABLE                                  3
+#define     DMA_FIFO_VALIDATE                                   2
+#define     DMA_ENABLE                                          1
+#define     DMA_ADDRESS_HOLD                                    0
+	__le32                  dmastat;
+#define     DMA_SCATTER_GATHER_DONE_INTERRUPT                   25
+#define     DMA_TRANSACTION_DONE_INTERRUPT                      24
+#define     DMA_ABORT                                           1
+#define     DMA_START                                           0
+	u32                     _unused0[2];
+	// offset 0x0190, 0x01b0, 0x01d0, 0x01f0,
+	__le32                  dmacount;
+#define     VALID_BIT                                           31
+#define     DMA_DIRECTION                                       30
+#define     DMA_DONE_INTERRUPT_ENABLE                           29
+#define     END_OF_CHAIN                                        28
+#define         DMA_BYTE_COUNT_MASK                                 ((1<<24)-1)
+#define     DMA_BYTE_COUNT                                      0
+	__le32                  dmaaddr;
+	__le32                  dmadesc;
+	u32                     _unused1;
+} __attribute__ ((packed));
+
+/* dedicated endpoint registers, BAR0 + 0x0200 */
+
+struct net2280_dep_regs {	/* [11.8] */
+	// offset 0x0200, 0x0210, 0x220, 0x230, 0x240
+	__le32                  dep_cfg;
+	// offset 0x0204, 0x0214, 0x224, 0x234, 0x244
+	__le32                  dep_rsp;
+	u32                     _unused[2];
+} __attribute__ ((packed));
+
+/* configurable endpoint registers, BAR0 + 0x0300 ... array of seven structs
+ * like this, for ep0 then the configurable endpoints A..F
+ * ep0 reserved for control; E and F have only 64 bytes of fifo
+ */
+struct net2280_ep_regs {	/* [11.9] */
+	// offset 0x0300, 0x0320, 0x0340, 0x0360, 0x0380, 0x03a0, 0x03c0
+	__le32                  ep_cfg;
+#define     ENDPOINT_BYTE_COUNT                                 16
+#define     ENDPOINT_ENABLE                                     10
+#define     ENDPOINT_TYPE                                       8
+#define     ENDPOINT_DIRECTION                                  7
+#define     ENDPOINT_NUMBER                                     0
+	__le32                  ep_rsp;
+#define     SET_NAK_OUT_PACKETS                                 15
+#define     SET_EP_HIDE_STATUS_PHASE                            14
+#define     SET_EP_FORCE_CRC_ERROR                              13
+#define     SET_INTERRUPT_MODE                                  12
+#define     SET_CONTROL_STATUS_PHASE_HANDSHAKE                  11
+#define     SET_NAK_OUT_PACKETS_MODE                            10
+#define     SET_ENDPOINT_TOGGLE                                 9
+#define     SET_ENDPOINT_HALT                                   8
+#define     CLEAR_NAK_OUT_PACKETS                               7
+#define     CLEAR_EP_HIDE_STATUS_PHASE                          6
+#define     CLEAR_EP_FORCE_CRC_ERROR                            5
+#define     CLEAR_INTERRUPT_MODE                                4
+#define     CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE                3
+#define     CLEAR_NAK_OUT_PACKETS_MODE                          2
+#define     CLEAR_ENDPOINT_TOGGLE                               1
+#define     CLEAR_ENDPOINT_HALT                                 0
+	__le32                  ep_irqenb;
+#define     SHORT_PACKET_OUT_DONE_INTERRUPT_ENABLE              6
+#define     SHORT_PACKET_TRANSFERRED_INTERRUPT_ENABLE           5
+#define     DATA_PACKET_RECEIVED_INTERRUPT_ENABLE               3
+#define     DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE            2
+#define     DATA_OUT_PING_TOKEN_INTERRUPT_ENABLE                1
+#define     DATA_IN_TOKEN_INTERRUPT_ENABLE                      0
+	__le32                  ep_stat;
+#define     FIFO_VALID_COUNT                                    24
+#define     HIGH_BANDWIDTH_OUT_TRANSACTION_PID                  22
+#define     TIMEOUT                                             21
+#define     USB_STALL_SENT                                      20
+#define     USB_IN_NAK_SENT                                     19
+#define     USB_IN_ACK_RCVD                                     18
+#define     USB_OUT_PING_NAK_SENT                               17
+#define     USB_OUT_ACK_SENT                                    16
+#define     FIFO_OVERFLOW                                       13
+#define     FIFO_UNDERFLOW                                      12
+#define     FIFO_FULL                                           11
+#define     FIFO_EMPTY                                          10
+#define     FIFO_FLUSH                                          9
+#define     SHORT_PACKET_OUT_DONE_INTERRUPT                     6
+#define     SHORT_PACKET_TRANSFERRED_INTERRUPT                  5
+#define     NAK_OUT_PACKETS                                     4
+#define     DATA_PACKET_RECEIVED_INTERRUPT                      3
+#define     DATA_PACKET_TRANSMITTED_INTERRUPT                   2
+#define     DATA_OUT_PING_TOKEN_INTERRUPT                       1
+#define     DATA_IN_TOKEN_INTERRUPT                             0
+	// offset 0x0310, 0x0330, 0x0350, 0x0370, 0x0390, 0x03b0, 0x03d0
+	__le32                  ep_avail;
+	__le32                  ep_data;
+	u32                     _unused0[2];
+} __attribute__ ((packed));
+
+struct net2280_reg_write {
+	__le16 port;
+	__le32 addr;
+	__le32 val;
+} __attribute__ ((packed));
+
+struct net2280_reg_read {
+	__le16 port;
+	__le32 addr;
+} __attribute__ ((packed));
+#endif /* NET2280_H */

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.c

+
+/*
+ * Common code 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.
+ */
+
+#include <linux/init.h>
+#include <linux/firmware.h>
+#include <linux/etherdevice.h>
+
+#include <net/mac80211.h>
+
+#include "p54.h"
+#include "p54common.h"
+
+MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
+MODULE_DESCRIPTION("Softmac Prism54 common code");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("prism54common");
+
+void p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
+{
+	struct p54_common *priv = dev->priv;
+	struct bootrec_exp_if *exp_if;
+	struct bootrec *bootrec;
+	u32 *data = (u32 *)fw->data;
+	u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
+	u8 *fw_version = NULL;
+	size_t len;
+	int i;
+
+	if (priv->rx_start)
+		return;
+
+	while (data < end_data && *data)
+		data++;
+
+	while (data < end_data && !*data)
+		data++;
+
+	bootrec = (struct bootrec *) data;
+
+	while (bootrec->data <= end_data &&
+	       (bootrec->data + (len = le32_to_cpu(bootrec->len))) <= end_data) {
+		u32 code = le32_to_cpu(bootrec->code);
+		switch (code) {
+		case BR_CODE_COMPONENT_ID:
+			switch (be32_to_cpu(*bootrec->data)) {
+			case FW_FMAC:
+				printk(KERN_INFO "p54: FreeMAC firmware\n");
+				break;
+			case FW_LM20:
+				printk(KERN_INFO "p54: LM20 firmware\n");
+				break;
+			case FW_LM86:
+				printk(KERN_INFO "p54: LM86 firmware\n");
+				break;
+			case FW_LM87:
+				printk(KERN_INFO "p54: LM87 firmware - not supported yet!\n");
+				break;
+			default:
+				printk(KERN_INFO "p54: unknown firmware\n");
+				break;
+			}
+			break;
+		case BR_CODE_COMPONENT_VERSION:
+			/* 24 bytes should be enough for all firmwares */
+			if (strnlen((unsigned char*)bootrec->data, 24) < 24)
+				fw_version = (unsigned char*)bootrec->data;
+			break;
+		case BR_CODE_DESCR:
+			priv->rx_start = le32_to_cpu(bootrec->data[1]);
+			/* FIXME add sanity checking */
+			priv->rx_end = le32_to_cpu(bootrec->data[2]) - 0x3500;
+			break;
+		case BR_CODE_EXPOSED_IF:
+			exp_if = (struct bootrec_exp_if *) bootrec->data;
+			for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
+				if (exp_if[i].if_id == 0x1a)
+					priv->fw_var = le16_to_cpu(exp_if[i].variant);
+			break;
+		case BR_CODE_DEPENDENT_IF:
+			break;
+		case BR_CODE_END_OF_BRA:
+		case LEGACY_BR_CODE_END_OF_BRA:
+			end_data = NULL;
+			break;
+		default:
+			break;
+		}
+		bootrec = (struct bootrec *)&bootrec->data[len];
+	}
+
+	if (fw_version)
+		printk(KERN_INFO "p54: FW rev %s - Softmac protocol %x.%x\n",
+			fw_version, priv->fw_var >> 8, priv->fw_var & 0xff);
+
+	if (priv->fw_var >= 0x300) {
+		/* Firmware supports QoS, use it! */
+		priv->tx_stats.data[0].limit = 3;
+		priv->tx_stats.data[1].limit = 4;
+		priv->tx_stats.data[2].limit = 3;
+		priv->tx_stats.data[3].limit = 1;
+		dev->queues = 4;
+	}
+}
+EXPORT_SYMBOL_GPL(p54_parse_firmware);
+
+static int p54_convert_rev0_to_rev1(struct ieee80211_hw *dev,
+				    struct pda_pa_curve_data *curve_data)
+{
+	struct p54_common *priv = dev->priv;
+	struct pda_pa_curve_data_sample_rev1 *rev1;
+	struct pda_pa_curve_data_sample_rev0 *rev0;
+	size_t cd_len = sizeof(*curve_data) +
+		(curve_data->points_per_channel*sizeof(*rev1) + 2) *
+		 curve_data->channels;
+	unsigned int i, j;
+	void *source, *target;
+
+	priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
+	if (!priv->curve_data)
+		return -ENOMEM;
+
+	memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
+	source = curve_data->data;
+	target = priv->curve_data->data;
+	for (i = 0; i < curve_data->channels; i++) {
+		__le16 *freq = source;
+		source += sizeof(__le16);
+		*((__le16 *)target) = *freq;
+		target += sizeof(__le16);
+		for (j = 0; j < curve_data->points_per_channel; j++) {
+			rev1 = target;
+			rev0 = source;
+
+			rev1->rf_power = rev0->rf_power;
+			rev1->pa_detector = rev0->pa_detector;
+			rev1->data_64qam = rev0->pcv;
+			/* "invent" the points for the other modulations */
+#define SUB(x,y) (u8)((x) - (y)) > (x) ? 0 : (x) - (y)
+			rev1->data_16qam = SUB(rev0->pcv, 12);
+			rev1->data_qpsk  = SUB(rev1->data_16qam, 12);
+			rev1->data_bpsk  = SUB(rev1->data_qpsk, 12);
+			rev1->data_barker= SUB(rev1->data_bpsk, 14);
+#undef SUB
+			target += sizeof(*rev1);
+			source += sizeof(*rev0);
+		}
+	}
+
+	return 0;
+}
+
+int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
+{
+	struct p54_common *priv = dev->priv;
+	struct eeprom_pda_wrap *wrap = NULL;
+	struct pda_entry *entry;
+	int i = 0;
+	unsigned int data_len, entry_len;
+	void *tmp;
+	int err;
+
+	wrap = (struct eeprom_pda_wrap *) eeprom;
+	entry = (void *)wrap->data + wrap->len;
+	i += 2;
+	i += le16_to_cpu(entry->len)*2;
+	while (i < len) {
+		entry_len = le16_to_cpu(entry->len);
+		data_len = ((entry_len - 1) << 1);
+		switch (le16_to_cpu(entry->code)) {
+		case PDR_MAC_ADDRESS:
+			SET_IEEE80211_PERM_ADDR(dev, entry->data);
+			break;
+		case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
+			if (data_len < 2) {
+				err = -EINVAL;
+				goto err;
+			}
+
+			if (2 + entry->data[1]*sizeof(*priv->output_limit) > data_len) {
+				err = -EINVAL;
+				goto err;
+			}
+
+			priv->output_limit = kmalloc(entry->data[1] *
+				sizeof(*priv->output_limit), GFP_KERNEL);
+
+			if (!priv->output_limit) {
+				err = -ENOMEM;
+				goto err;
+			}
+
+			memcpy(priv->output_limit, &entry->data[2],
+			       entry->data[1]*sizeof(*priv->output_limit));
+			priv->output_limit_len = entry->data[1];
+			break;
+		case PDR_PRISM_PA_CAL_CURVE_DATA:
+			if (data_len < sizeof(struct pda_pa_curve_data)) {
+				err = -EINVAL;
+				goto err;
+			}
+
+			if (((struct pda_pa_curve_data *)entry->data)->cal_method_rev) {
+				priv->curve_data = kmalloc(data_len, GFP_KERNEL);
+				if (!priv->curve_data) {
+					err = -ENOMEM;
+					goto err;
+				}
+
+				memcpy(priv->curve_data, entry->data, data_len);
+			} else {
+				err = p54_convert_rev0_to_rev1(dev, (struct pda_pa_curve_data *)entry->data);
+				if (err)
+					goto err;
+			}
+
+			break;
+		case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
+			priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
+			if (!priv->iq_autocal) {
+				err = -ENOMEM;
+				goto err;
+			}
+
+			memcpy(priv->iq_autocal, entry->data, data_len);
+			priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
+			break;
+		case PDR_INTERFACE_LIST:
+			tmp = entry->data;
+			while ((u8 *)tmp < entry->data + data_len) {
+				struct bootrec_exp_if *exp_if = tmp;
+				if (le16_to_cpu(exp_if->if_id) == 0xF)
+					priv->rxhw = exp_if->variant & cpu_to_le16(0x07);
+				tmp += sizeof(struct bootrec_exp_if);
+			}
+			break;
+		case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
+			priv->version = *(u8 *)(entry->data + 1);
+			break;
+		case PDR_END:
+			i = len;
+			break;
+		}
+
+		entry = (void *)entry + (entry_len + 1)*2;
+		i += 2;
+		i += entry_len*2;
+	}
+
+	if (!priv->iq_autocal || !priv->output_limit || !priv->curve_data) {
+		printk(KERN_ERR "p54: not all required entries found in eeprom!\n");
+		err = -EINVAL;
+		goto err;
+	}
+
+	return 0;
+
+  err:
+	if (priv->iq_autocal) {
+		kfree(priv->iq_autocal);
+		priv->iq_autocal = NULL;
+	}
+
+	if (priv->output_limit) {
+		kfree(priv->output_limit);
+		priv->output_limit = NULL;
+	}
+
+	if (priv->curve_data) {
+		kfree(priv->curve_data);
+		priv->curve_data = NULL;
+	}
+
+	printk(KERN_ERR "p54: eeprom parse failed!\n");
+	return err;
+}
+EXPORT_SYMBOL_GPL(p54_parse_eeprom);
+
+void p54_fill_eeprom_readback(struct p54_control_hdr *hdr)
+{
+	struct p54_eeprom_lm86 *eeprom_hdr;
+
+	hdr->magic1 = cpu_to_le16(0x8000);
+	hdr->len = cpu_to_le16(sizeof(*eeprom_hdr) + 0x2000);
+	hdr->type = cpu_to_le16(P54_CONTROL_TYPE_EEPROM_READBACK);
+	hdr->retry1 = hdr->retry2 = 0;
+	eeprom_hdr = (struct p54_eeprom_lm86 *) hdr->data;
+	eeprom_hdr->offset = 0x0;
+	eeprom_hdr->len = cpu_to_le16(0x2000);
+}
+EXPORT_SYMBOL_GPL(p54_fill_eeprom_readback);
+
+static void p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
+{
+	struct p54_rx_hdr *hdr = (struct p54_rx_hdr *) skb->data;
+	struct ieee80211_rx_status rx_status = {0};
+	u16 freq = le16_to_cpu(hdr->freq);
+
+	rx_status.ssi = hdr->rssi;
+	rx_status.rate = hdr->rate & 0x1f; /* report short preambles & CCK too */
+	rx_status.channel = freq == 2484 ? 14 : (freq - 2407)/5;
+	rx_status.freq = freq;
+	rx_status.phymode = MODE_IEEE80211G;
+	rx_status.antenna = hdr->antenna;
+	rx_status.mactime = le64_to_cpu(hdr->timestamp);
+
+	skb_pull(skb, sizeof(*hdr));
+	skb_trim(skb, le16_to_cpu(hdr->len));
+
+	ieee80211_rx_irqsafe(dev, skb, &rx_status);
+}
+
+static void inline p54_wake_free_queues(struct ieee80211_hw *dev)
+{
+	struct p54_common *priv = dev->priv;
+	int i;
+
+	/* ieee80211_start_queues is great if all queues are really empty.
+	 * But, what if some are full? */
+
+	for (i = 0; i < dev->queues; i++)
+		if (priv->tx_stats.data[i].len < priv->tx_stats.data[i].limit)
+			ieee80211_wake_queue(dev, i);
+}
+
+static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
+{
+	struct p54_common *priv = dev->priv;
+	struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
+	struct p54_frame_sent_hdr *payload = (struct p54_frame_sent_hdr *) hdr->data;
+	struct sk_buff *entry = (struct sk_buff *) priv->tx_queue.next;
+	u32 addr = le32_to_cpu(hdr->req_id) - 0x70;
+	struct memrecord *range = NULL;
+	u32 freed = 0;
+	u32 last_addr = priv->rx_start;
+
+	while (entry != (struct sk_buff *)&priv->tx_queue) {
+		range = (struct memrecord *)&entry->cb;
+		if (range->start_addr == addr) {
+			struct ieee80211_tx_status status = {{0}};
+			struct p54_control_hdr *entry_hdr;
+			struct p54_tx_control_allocdata *entry_data;
+			int pad = 0;
+
+			if (entry->next != (struct sk_buff *)&priv->tx_queue)
+				freed = ((struct memrecord *)&entry->next->cb)->start_addr - last_addr;
+			else
+				freed = priv->rx_end - last_addr;
+
+			last_addr = range->end_addr;
+			__skb_unlink(entry, &priv->tx_queue);
+			if (!range->control) {
+				kfree_skb(entry);
+				break;
+			}
+			memcpy(&status.control, range->control,
+			       sizeof(status.control));
+			kfree(range->control);
+			priv->tx_stats.data[status.control.queue].len--;
+
+			entry_hdr = (struct p54_control_hdr *) entry->data;
+			entry_data = (struct p54_tx_control_allocdata *) entry_hdr->data;
+			if ((entry_hdr->magic1 & cpu_to_le16(0x4000)) != 0)
+				pad = entry_data->align[0];
+
+			if (!status.control.flags & IEEE80211_TXCTL_NO_ACK) {
+				if (!(payload->status & 0x01))
+					status.flags |= IEEE80211_TX_STATUS_ACK;
+				else
+					status.excessive_retries = 1;
+			}
+			status.retry_count = payload->retries - 1;
+			status.ack_signal = le16_to_cpu(payload->ack_rssi);
+			skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
+			ieee80211_tx_status_irqsafe(dev, entry, &status);
+			break;
+		} else
+			last_addr = range->end_addr;
+		entry = entry->next;
+	}
+
+	if (freed >= IEEE80211_MAX_RTS_THRESHOLD + 0x170 +
+	    sizeof(struct p54_control_hdr))
+		p54_wake_free_queues(dev);
+}
+
+static void p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
+{
+	struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
+
+	switch (le16_to_cpu(hdr->type)) {
+	case P54_CONTROL_TYPE_TXDONE:
+		p54_rx_frame_sent(dev, skb);
+		break;
+	case P54_CONTROL_TYPE_BBP:
+		break;
+	default:
+		printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
+		       wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
+		break;
+	}
+}
+
+/* returns zero if skb can be reused */
+int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
+{
+	u8 type = le16_to_cpu(*((__le16 *)skb->data)) >> 8;
+	switch (type) {
+	case 0x00:
+	case 0x01:
+		p54_rx_data(dev, skb);
+		return -1;
+	case 0x4d:
+		/* TODO: do something better... but then again, I've never seen this happen */
+		printk(KERN_ERR "%s: Received fault. Probably need to restart hardware now..\n",
+		       wiphy_name(dev->wiphy));
+		break;
+	case 0x80:
+		p54_rx_control(dev, skb);
+		break;
+	default:
+		printk(KERN_ERR "%s: unknown frame RXed (0x%02x)\n",
+		       wiphy_name(dev->wiphy), type);
+		break;
+	}
+	return 0;
+}
+EXPORT_SYMBOL_GPL(p54_rx);
+
+/*
+ * So, the firmware is somewhat stupid and doesn't know what places in its
+ * memory incoming data should go to. By poking around in the firmware, we
+ * can find some unused memory to upload our packets to. However, data that we
+ * want the card to TX needs to stay intact until the card has told us that
+ * it is done with it. This function finds empty places we can upload to and
+ * marks allocated areas as reserved if necessary. p54_rx_frame_sent frees
+ * allocated areas.
+ */
+static void p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
+			       struct p54_control_hdr *data, u32 len,
+			       struct ieee80211_tx_control *control)
+{
+	struct p54_common *priv = dev->priv;
+	struct sk_buff *entry = priv->tx_queue.next;
+	struct sk_buff *target_skb = NULL;
+	struct memrecord *range;
+	u32 last_addr = priv->rx_start;
+	u32 largest_hole = 0;
+	u32 target_addr = priv->rx_start;
+	unsigned long flags;
+	unsigned int left;
+	len = (len + 0x170 + 3) & ~0x3; /* 0x70 headroom, 0x100 tailroom */
+
+	spin_lock_irqsave(&priv->tx_queue.lock, flags);
+	left = skb_queue_len(&priv->tx_queue);
+	while (left--) {
+		u32 hole_size;
+		range = (struct memrecord *)&entry->cb;
+		hole_size = range->start_addr - last_addr;
+		if (!target_skb && hole_size >= len) {
+			target_skb = entry->prev;
+			hole_size -= len;
+			target_addr = last_addr;
+		}
+		largest_hole = max(largest_hole, hole_size);
+		last_addr = range->end_addr;
+		entry = entry->next;
+	}
+	if (!target_skb && priv->rx_end - last_addr >= len) {
+		target_skb = priv->tx_queue.prev;
+		largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
+		if (!skb_queue_empty(&priv->tx_queue)) {
+			range = (struct memrecord *)&target_skb->cb;
+			target_addr = range->end_addr;
+		}
+	} else
+		largest_hole = max(largest_hole, priv->rx_end - last_addr);
+
+	if (skb) {
+		range = (struct memrecord *)&skb->cb;
+		range->start_addr = target_addr;
+		range->end_addr = target_addr + len;
+		range->control = control;
+		__skb_queue_after(&priv->tx_queue, target_skb, skb);
+		if (largest_hole < IEEE80211_MAX_RTS_THRESHOLD + 0x170 +
+				   sizeof(struct p54_control_hdr))
+			ieee80211_stop_queues(dev);
+	}
+	spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
+
+	data->req_id = cpu_to_le32(target_addr + 0x70);
+}
+
+static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb,
+		  struct ieee80211_tx_control *control)
+{
+	struct ieee80211_tx_queue_stats_data *current_queue;
+	struct p54_common *priv = dev->priv;
+	struct p54_control_hdr *hdr;
+	struct p54_tx_control_allocdata *txhdr;
+	struct ieee80211_tx_control *control_copy;
+	size_t padding, len;
+	u8 rate;
+
+	current_queue = &priv->tx_stats.data[control->queue];
+	if (unlikely(current_queue->len > current_queue->limit))
+		return NETDEV_TX_BUSY;
+	current_queue->len++;
+	current_queue->count++;
+	if (current_queue->len == current_queue->limit)
+		ieee80211_stop_queue(dev, control->queue);
+
+	padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
+	len = skb->len;
+
+	control_copy = kmalloc(sizeof(*control), GFP_ATOMIC);
+	if (control_copy)
+		memcpy(control_copy, control, sizeof(*control));
+
+	txhdr = (struct p54_tx_control_allocdata *)
+			skb_push(skb, sizeof(*txhdr) + padding);
+	hdr = (struct p54_control_hdr *) skb_push(skb, sizeof(*hdr));
+
+	if (padding)
+		hdr->magic1 = cpu_to_le16(0x4010);
+	else
+		hdr->magic1 = cpu_to_le16(0x0010);
+	hdr->len = cpu_to_le16(len);
+	hdr->type = (control->flags & IEEE80211_TXCTL_NO_ACK) ? 0 : cpu_to_le16(1);
+	hdr->retry1 = hdr->retry2 = control->retry_limit;
+	p54_assign_address(dev, skb, hdr, skb->len, control_copy);
+
+	memset(txhdr->wep_key, 0x0, 16);
+	txhdr->padding = 0;
+	txhdr->padding2 = 0;
+
+	/* TODO: add support for alternate retry TX rates */
+	rate = control->tx_rate;
+	if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS)
+		rate |= 0x40;
+	else if (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)
+		rate |= 0x20;
+	memset(txhdr->rateset, rate, 8);
+	txhdr->wep_key_present = 0;
+	txhdr->wep_key_len = 0;
+	txhdr->frame_type = cpu_to_le32(control->queue + 4);
+	txhdr->magic4 = 0;
+	txhdr->antenna = (control->antenna_sel_tx == 0) ?
+		2 : control->antenna_sel_tx - 1;
+	txhdr->output_power = 0x7f; // HW Maximum
+	txhdr->magic5 = (control->flags & IEEE80211_TXCTL_NO_ACK) ?
+		0 : ((rate > 0x3) ? cpu_to_le32(0x33) : cpu_to_le32(0x23));
+	if (padding)
+		txhdr->align[0] = padding;
+
+	priv->tx(dev, hdr, skb->len, 0);
+	return 0;
+}
+
+static int p54_set_filter(struct ieee80211_hw *dev, u16 filter_type,
+			  const u8 *dst, const u8 *src, u8 antenna,
+			  u32 magic3, u32 magic8, u32 magic9)
+{
+	struct p54_common *priv = dev->priv;
+	struct p54_control_hdr *hdr;
+	struct p54_tx_control_filter *filter;
+
+	hdr = kzalloc(sizeof(*hdr) + sizeof(*filter) +
+		      priv->tx_hdr_len, GFP_KERNEL);
+	if (!hdr)
+		return -ENOMEM;
+
+	hdr = (void *)hdr + priv->tx_hdr_len;
+
+	filter = (struct p54_tx_control_filter *) hdr->data;
+	hdr->magic1 = cpu_to_le16(0x8001);
+	hdr->len = cpu_to_le16(sizeof(*filter));
+	p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*filter), NULL);
+	hdr->type = cpu_to_le16(P54_CONTROL_TYPE_FILTER_SET);
+
+	filter->filter_type = cpu_to_le16(filter_type);
+	memcpy(filter->dst, dst, ETH_ALEN);
+	if (!src)
+		memset(filter->src, ~0, ETH_ALEN);
+	else
+		memcpy(filter->src, src, ETH_ALEN);
+	filter->antenna = antenna;
+	filter->magic3 = cpu_to_le32(magic3);
+	filter->rx_addr = cpu_to_le32(priv->rx_end);
+	filter->max_rx = cpu_to_le16(0x0620);	/* FIXME: for usb ver 1.. maybe */
+	filter->rxhw = priv->rxhw;
+	filter->magic8 = cpu_to_le16(magic8);
+	filter->magic9 = cpu_to_le16(magic9);
+
+	priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*filter), 1);
+	return 0;
+}
+
+static int p54_set_freq(struct ieee80211_hw *dev, __le16 freq)
+{
+	struct p54_common *priv = dev->priv;
+	struct p54_control_hdr *hdr;
+	struct p54_tx_control_channel *chan;
+	unsigned int i;
+	size_t payload_len = sizeof(*chan) + sizeof(u32)*2 +
+			     sizeof(*chan->curve_data) *
+			     priv->curve_data->points_per_channel;
+	void *entry;
+
+	hdr = kzalloc(sizeof(*hdr) + payload_len +
+		      priv->tx_hdr_len, GFP_KERNEL);
+	if (!hdr)
+		return -ENOMEM;
+
+	hdr = (void *)hdr + priv->tx_hdr_len;
+
+	chan = (struct p54_tx_control_channel *) hdr->data;
+
+	hdr->magic1 = cpu_to_le16(0x8001);
+	hdr->len = cpu_to_le16(sizeof(*chan));
+	hdr->type = cpu_to_le16(P54_CONTROL_TYPE_CHANNEL_CHANGE);
+	p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + payload_len, NULL);
+
+	chan->magic1 = cpu_to_le16(0x1);
+	chan->magic2 = cpu_to_le16(0x0);
+
+	for (i = 0; i < priv->iq_autocal_len; i++) {
+		if (priv->iq_autocal[i].freq != freq)
+			continue;
+
+		memcpy(&chan->iq_autocal, &priv->iq_autocal[i],
+		       sizeof(*priv->iq_autocal));
+		break;
+	}
+	if (i == priv->iq_autocal_len)
+		goto err;
+
+	for (i = 0; i < priv->output_limit_len; i++) {
+		if (priv->output_limit[i].freq != freq)
+			continue;
+
+		chan->val_barker = 0x38;
+		chan->val_bpsk = priv->output_limit[i].val_bpsk;
+		chan->val_qpsk = priv->output_limit[i].val_qpsk;
+		chan->val_16qam = priv->output_limit[i].val_16qam;
+		chan->val_64qam = priv->output_limit[i].val_64qam;
+		break;
+	}
+	if (i == priv->output_limit_len)
+		goto err;
+
+	chan->pa_points_per_curve = priv->curve_data->points_per_channel;
+
+	entry = priv->curve_data->data;
+	for (i = 0; i < priv->curve_data->channels; i++) {
+		if (*((__le16 *)entry) != freq) {
+			entry += sizeof(__le16);
+			entry += sizeof(struct pda_pa_curve_data_sample_rev1) *
+				 chan->pa_points_per_curve;
+			continue;
+		}
+
+		entry += sizeof(__le16);
+		memcpy(chan->curve_data, entry, sizeof(*chan->curve_data) *
+		       chan->pa_points_per_curve);
+		break;
+	}
+
+	memcpy(hdr->data + payload_len - 4, &chan->val_bpsk, 4);
+
+	priv->tx(dev, hdr, sizeof(*hdr) + payload_len, 1);
+	return 0;
+
+ err:
+	printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
+	kfree(hdr);
+	return -EINVAL;
+}
+
+static int p54_set_leds(struct ieee80211_hw *dev, int mode, int link, int act)
+{
+	struct p54_common *priv = dev->priv;
+	struct p54_control_hdr *hdr;
+	struct p54_tx_control_led *led;
+
+	hdr = kzalloc(sizeof(*hdr) + sizeof(*led) +
+		      priv->tx_hdr_len, GFP_KERNEL);
+	if (!hdr)
+		return -ENOMEM;
+
+	hdr = (void *)hdr + priv->tx_hdr_len;
+	hdr->magic1 = cpu_to_le16(0x8001);
+	hdr->len = cpu_to_le16(sizeof(*led));
+	hdr->type = cpu_to_le16(P54_CONTROL_TYPE_LED);
+	p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*led), NULL);
+
+	led = (struct p54_tx_control_led *) hdr->data;
+	led->mode = cpu_to_le16(mode);
+	led->led_permanent = cpu_to_le16(link);
+	led->led_temporary = cpu_to_le16(act);
+	led->duration = cpu_to_le16(1000);
+
+	priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*led), 1);
+
+	return 0;
+}
+
+#define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, burst)	\
+do {	 							\
+	queue.aifs = cpu_to_le16(ai_fs);			\
+	queue.cwmin = cpu_to_le16(cw_min);			\
+	queue.cwmax = cpu_to_le16(cw_max);			\
+	queue.txop = (burst == 0) ? 				\
+		0 : cpu_to_le16((burst * 100) / 32 + 1);	\
+} while(0)
+
+static void p54_init_vdcf(struct ieee80211_hw *dev)
+{
+	struct p54_common *priv = dev->priv;
+	struct p54_control_hdr *hdr;
+	struct p54_tx_control_vdcf *vdcf;
+
+	/* all USB V1 adapters need a extra headroom */
+	hdr = (void *)priv->cached_vdcf + priv->tx_hdr_len;
+	hdr->magic1 = cpu_to_le16(0x8001);
+	hdr->len = cpu_to_le16(sizeof(*vdcf));
+	hdr->type = cpu_to_le16(P54_CONTROL_TYPE_DCFINIT);
+	hdr->req_id = cpu_to_le32(priv->rx_start);
+
+	vdcf = (struct p54_tx_control_vdcf *) hdr->data;
+
+	P54_SET_QUEUE(vdcf->queue[0], 0x0002, 0x0003, 0x0007, 0x000f);
+	P54_SET_QUEUE(vdcf->queue[1], 0x0002, 0x0007, 0x000f, 0x001e);
+	P54_SET_QUEUE(vdcf->queue[2], 0x0002, 0x000f, 0x03ff, 0x0014);
+	P54_SET_QUEUE(vdcf->queue[3], 0x0007, 0x000f, 0x03ff, 0x0000);
+}
+
+static void p54_set_vdcf(struct ieee80211_hw *dev)
+{
+	struct p54_common *priv = dev->priv;
+	struct p54_control_hdr *hdr;
+	struct p54_tx_control_vdcf *vdcf;
+
+	hdr = (void *)priv->cached_vdcf + priv->tx_hdr_len;
+
+	p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*vdcf), NULL);
+
+	vdcf = (struct p54_tx_control_vdcf *) hdr->data;
+
+	if (dev->conf.flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
+		vdcf->slottime = 9;
+		vdcf->magic1 = 0x00;
+		vdcf->magic2 = 0x10;
+	} else {
+		vdcf->slottime = 20;
+		vdcf->magic1 = 0x0a;
+		vdcf->magic2 = 0x06;
+	}
+
+	/* (see prism54/isl_oid.h for further details) */
+	vdcf->frameburst = cpu_to_le16(0);
+
+	priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*vdcf), 0);
+}
+
+static int p54_add_interface(struct ieee80211_hw *dev,
+			     struct ieee80211_if_init_conf *conf)
+{
+	struct p54_common *priv = dev->priv;
+	int err;
+
+	/* NOTE: using IEEE80211_IF_TYPE_MGMT to indicate no mode selected */
+	if (priv->mode != IEEE80211_IF_TYPE_MGMT)
+		return -1;
+
+	switch (conf->type) {
+	case IEEE80211_IF_TYPE_STA:
+		priv->mode = conf->type;
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	priv->mac_addr = conf->mac_addr;
+
+	err = priv->open(dev);
+	if (err) {
+		priv->mode = IEEE80211_IF_TYPE_MGMT;
+		skb_queue_purge(&priv->tx_queue);
+		return err;
+	}
+
+	p54_set_filter(dev, 0, priv->mac_addr, NULL, 0, 1, 0, 0xF642);
+	p54_set_filter(dev, 0, priv->mac_addr, NULL, 1, 0, 0, 0xF642);
+	p54_set_vdcf(dev);
+
+	switch (conf->type) {
+	case IEEE80211_IF_TYPE_STA:
+		p54_set_filter(dev, 1, priv->mac_addr, NULL, 0, 0x15F, 0x1F4, 0);
+		break;
+	}
+
+	p54_set_leds(dev, 1, 0, 0);
+
+	return 0;
+}
+
+static void p54_remove_interface(struct ieee80211_hw *dev,
+				 struct ieee80211_if_init_conf *conf)
+{
+	struct p54_common *priv = dev->priv;
+	struct sk_buff *skb;
+	while ((skb = skb_dequeue(&priv->tx_queue))) {
+		struct memrecord *range = (struct memrecord *)&skb->cb;
+		if (range->control)
+			kfree(range->control);
+		kfree_skb(skb);
+	}
+	priv->mode = IEEE80211_IF_TYPE_MGMT;
+	priv->stop(dev);
+}
+
+static int p54_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
+{
+	int ret;
+
+	ret = p54_set_freq(dev, cpu_to_le16(conf->freq));
+	p54_set_vdcf(dev);
+	return ret;
+}
+
+static int p54_config_interface(struct ieee80211_hw *dev, int if_id,
+				struct ieee80211_if_conf *conf)
+{
+	struct p54_common *priv = dev->priv;
+
+	p54_set_filter(dev, 0, priv->mac_addr, conf->bssid, 0, 1, 0, 0xF642);
+	p54_set_filter(dev, 0, priv->mac_addr, conf->bssid, 2, 0, 0, 0);
+	p54_set_leds(dev, 1, !is_multicast_ether_addr(conf->bssid), 0);
+	return 0;
+}
+
+static int p54_conf_tx(struct ieee80211_hw *dev, int queue,
+		       const struct ieee80211_tx_queue_params *params)
+{
+	struct p54_common *priv = dev->priv;
+	struct p54_tx_control_vdcf *vdcf;
+
+	vdcf = (struct p54_tx_control_vdcf *)(((struct p54_control_hdr *)
+		((void *)priv->cached_vdcf + priv->tx_hdr_len))->data);
+
+	if ((params) && !((queue < 0) || (queue > 4))) {
+		P54_SET_QUEUE(vdcf->queue[queue], params->aifs,
+			params->cw_min, params->cw_max, params->burst_time);
+	} else
+		return -EINVAL;
+
+	p54_set_vdcf(dev);
+
+	return 0;
+}
+
+static int p54_get_stats(struct ieee80211_hw *dev,
+			 struct ieee80211_low_level_stats *stats)
+{
+	/* TODO */
+	return 0;
+}
+
+static int p54_get_tx_stats(struct ieee80211_hw *dev,
+			    struct ieee80211_tx_queue_stats *stats)
+{
+	struct p54_common *priv = dev->priv;
+	unsigned int i;
+
+	for (i = 0; i < dev->queues; i++)
+		memcpy(&stats->data[i], &priv->tx_stats.data[i],
+			sizeof(stats->data[i]));
+
+	return 0;
+}
+
+static const struct ieee80211_ops p54_ops = {
+	.tx			= p54_tx,
+	.add_interface		= p54_add_interface,
+	.remove_interface	= p54_remove_interface,
+	.config			= p54_config,
+	.config_interface	= p54_config_interface,
+	.conf_tx		= p54_conf_tx,
+	.get_stats		= p54_get_stats,
+	.get_tx_stats		= p54_get_tx_stats
+};
+
+struct ieee80211_hw *p54_init_common(size_t priv_data_len)
+{
+	struct ieee80211_hw *dev;
+	struct p54_common *priv;
+	int i;
+
+	dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
+	if (!dev)
+		return NULL;
+
+	priv = dev->priv;
+	priv->mode = IEEE80211_IF_TYPE_MGMT;
+	skb_queue_head_init(&priv->tx_queue);
+	memcpy(priv->channels, p54_channels, sizeof(p54_channels));
+	memcpy(priv->rates, p54_rates, sizeof(p54_rates));
+	priv->modes[1].mode = MODE_IEEE80211B;
+	priv->modes[1].num_rates = 4;
+	priv->modes[1].rates = priv->rates;
+	priv->modes[1].num_channels = ARRAY_SIZE(p54_channels);
+	priv->modes[1].channels = priv->channels;
+	priv->modes[0].mode = MODE_IEEE80211G;
+	priv->modes[0].num_rates = ARRAY_SIZE(p54_rates);
+	priv->modes[0].rates = priv->rates;
+	priv->modes[0].num_channels = ARRAY_SIZE(p54_channels);
+	priv->modes[0].channels = priv->channels;
+	dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | /* not sure */
+		    IEEE80211_HW_RX_INCLUDES_FCS;
+	dev->channel_change_time = 1000;	/* TODO: find actual value */
+	dev->max_rssi = 127;
+
+	priv->tx_stats.data[0].limit = 5;
+	dev->queues = 1;
+
+	dev->extra_tx_headroom = sizeof(struct p54_control_hdr) + 4 +
+				 sizeof(struct p54_tx_control_allocdata);
+
+        priv->cached_vdcf = kzalloc(sizeof(struct p54_tx_control_vdcf) +
+              priv->tx_hdr_len + sizeof(struct p54_control_hdr), GFP_KERNEL);
+
+	if (!priv->cached_vdcf) {
+		ieee80211_free_hw(dev);
+		return NULL;
+	}
+
+	p54_init_vdcf(dev);
+
+	for (i = 0; i < 2; i++) {
+		if (ieee80211_register_hwmode(dev, &priv->modes[i])) {
+			kfree(priv->cached_vdcf);
+			ieee80211_free_hw(dev);
+			return NULL;
+		}
+	}
+
+	return dev;
+}
+EXPORT_SYMBOL_GPL(p54_init_common);
+
+void p54_free_common(struct ieee80211_hw *dev)
+{
+	struct p54_common *priv = dev->priv;
+	kfree(priv->iq_autocal);
+	kfree(priv->output_limit);
+	kfree(priv->curve_data);
+	kfree(priv->cached_vdcf);
+}
+EXPORT_SYMBOL_GPL(p54_free_common);
+
+static int __init p54_init(void)
+{
+	return 0;
+}
+
+static void __exit p54_exit(void)
+{
+}
+
+module_init(p54_init);
+module_exit(p54_exit);

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.c

+
+/*
+ * Linux device driver for USB 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 <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.
+ */
+
+#include <linux/init.h>
+#include <linux/usb.h>
+#include <linux/pci.h>
+#include <linux/firmware.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+#include <linux/crc32.h>
+#include <net/mac80211.h>
+
+#include "p54.h"
+#include "p54usb.h"
+
+MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
+MODULE_DESCRIPTION("Prism54 USB wireless driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("prism54usb");
+
+static struct usb_device_id p54u_table[] __devinitdata = {
+	/* Version 1 devices (pci chip + net2280) */
+	{USB_DEVICE(0x0506, 0x0a11)},	/* 3COM 3CRWE254G72 */
+	{USB_DEVICE(0x0707, 0xee06)},	/* SMC 2862W-G */
+	{USB_DEVICE(0x083a, 0x4501)},	/* Accton 802.11g WN4501 USB */
+	{USB_DEVICE(0x083a, 0x4502)},	/* Siemens Gigaset USB Adapter */
+	{USB_DEVICE(0x0846, 0x4200)},	/* Netgear WG121 */
+	{USB_DEVICE(0x0846, 0x4210)},	/* Netgear WG121 the second ? */
+	{USB_DEVICE(0x0846, 0x4220)},	/* Netgear WG111 */
+	{USB_DEVICE(0x0cde, 0x0006)},	/* Medion 40900, Roper Europe */
+	{USB_DEVICE(0x124a, 0x4023)},	/* Shuttle PN15, Airvast WM168g, IOGear GWU513 */
+	{USB_DEVICE(0x1915, 0x2234)},	/* Linksys WUSB54G OEM */
+	{USB_DEVICE(0x1915, 0x2235)},	/* Linksys WUSB54G Portable OEM */
+	{USB_DEVICE(0x2001, 0x3701)},	/* DLink DWL-G120 Spinnaker */
+	{USB_DEVICE(0x2001, 0x3703)},	/* DLink DWL-G122 */
+	{USB_DEVICE(0x5041, 0x2234)},	/* Linksys WUSB54G */
+	{USB_DEVICE(0x5041, 0x2235)},	/* Linksys WUSB54G Portable */
+
+	/* Version 2 devices (3887) */
+	{USB_DEVICE(0x050d, 0x7050)},	/* Belkin F5D7050 ver 1000 */
+	{USB_DEVICE(0x0572, 0x2000)},	/* Cohiba Proto board */
+	{USB_DEVICE(0x0572, 0x2002)},	/* Cohiba Proto board */
+	{USB_DEVICE(0x0707, 0xee13)},   /* SMC 2862W-G version 2 */
+	{USB_DEVICE(0x083a, 0x4521)},   /* Siemens Gigaset USB Adapter 54 version 2 */
+	{USB_DEVICE(0x0846, 0x4240)},	/* Netgear WG111 (v2) */
+	{USB_DEVICE(0x0915, 0x2000)},	/* Cohiba Proto board */
+	{USB_DEVICE(0x0915, 0x2002)},	/* Cohiba Proto board */
+	{USB_DEVICE(0x0baf, 0x0118)},   /* U.S. Robotics U5 802.11g Adapter*/
+	{USB_DEVICE(0x0bf8, 0x1009)},   /* FUJITSU E-5400 USB D1700*/
+	{USB_DEVICE(0x0cde, 0x0006)},   /* Medion MD40900 */
+	{USB_DEVICE(0x0cde, 0x0008)},	/* Sagem XG703A */
+	{USB_DEVICE(0x0d8e, 0x3762)},	/* DLink DWL-G120 Cohiba */
+	{USB_DEVICE(0x09aa, 0x1000)},	/* Spinnaker Proto board */
+	{USB_DEVICE(0x1435, 0x0427)},	/* Inventel UR054G */
+	{USB_DEVICE(0x2001, 0x3704)},	/* DLink DWL-G122 rev A2 */
+	{USB_DEVICE(0x413c, 0x8102)},	/* Spinnaker DUT */
+	{USB_DEVICE(0x413c, 0x8104)},	/* Cohiba Proto board */
+	{}
+};
+
+MODULE_DEVICE_TABLE(usb, p54u_table);
+
+static void p54u_rx_cb(struct urb *urb)
+{
+	struct sk_buff *skb = (struct sk_buff *) urb->context;
+	struct p54u_rx_info *info = (struct p54u_rx_info *)skb->cb;
+	struct ieee80211_hw *dev = info->dev;
+	struct p54u_priv *priv = dev->priv;
+
+	if (unlikely(urb->status)) {
+		info->urb = NULL;
+		usb_free_urb(urb);
+		return;
+	}
+
+	skb_unlink(skb, &priv->rx_queue);
+	skb_put(skb, urb->actual_length);
+	if (!priv->hw_type)
+		skb_pull(skb, sizeof(struct net2280_tx_hdr));
+
+	if (p54_rx(dev, skb)) {
+		skb = dev_alloc_skb(MAX_RX_SIZE);
+		if (unlikely(!skb)) {
+			usb_free_urb(urb);
+			/* TODO check rx queue length and refill *somewhere* */
+			return;
+		}
+
+		info = (struct p54u_rx_info *) skb->cb;
+		info->urb = urb;
+		info->dev = dev;
+		urb->transfer_buffer = skb_tail_pointer(skb);
+		urb->context = skb;
+		skb_queue_tail(&priv->rx_queue, skb);
+	} else {
+		skb_trim(skb, 0);
+		skb_queue_tail(&priv->rx_queue, skb);
+	}
+
+	usb_submit_urb(urb, GFP_ATOMIC);
+}
+
+static void p54u_tx_cb(struct urb *urb)
+{
+	usb_free_urb(urb);
+}
+
+static void p54u_tx_free_cb(struct urb *urb)
+{
+	kfree(urb->transfer_buffer);
+	usb_free_urb(urb);
+}
+
+static int p54u_init_urbs(struct ieee80211_hw *dev)
+{
+	struct p54u_priv *priv = dev->priv;
+	struct urb *entry;
+	struct sk_buff *skb;
+	struct p54u_rx_info *info;
+
+	while (skb_queue_len(&priv->rx_queue) < 32) {
+		skb = __dev_alloc_skb(MAX_RX_SIZE, GFP_KERNEL);
+		if (!skb)
+			break;
+		entry = usb_alloc_urb(0, GFP_KERNEL);
+		if (!entry) {
+			kfree_skb(skb);
+			break;
+		}
+		usb_fill_bulk_urb(entry, priv->udev, usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), skb_tail_pointer(skb), MAX_RX_SIZE, p54u_rx_cb, skb);
+		info = (struct p54u_rx_info *) skb->cb;
+		info->urb = entry;
+		info->dev = dev;
+		skb_queue_tail(&priv->rx_queue, skb);
+		usb_submit_urb(entry, GFP_KERNEL);
+	}
+
+	return 0;
+}
+
+static void p54u_free_urbs(struct ieee80211_hw *dev)
+{
+	struct p54u_priv *priv = dev->priv;
+	struct p54u_rx_info *info;
+	struct sk_buff *skb;
+
+	while ((skb = skb_dequeue(&priv->rx_queue))) {
+		info = (struct p54u_rx_info *) skb->cb;
+		if (!info->urb)
+			continue;
+
+		usb_kill_urb(info->urb);
+		kfree_skb(skb);
+	}
+}
+
+static void p54u_tx_3887(struct ieee80211_hw *dev, struct p54_control_hdr *data,
+			 size_t len, int free_on_tx)
+{
+	struct p54u_priv *priv = dev->priv;
+	struct urb *addr_urb, *data_urb;
+
+	addr_urb = usb_alloc_urb(0, GFP_ATOMIC);
+	if (!addr_urb)
+		return;
+
+	data_urb = usb_alloc_urb(0, GFP_ATOMIC);
+	if (!data_urb) {
+		usb_free_urb(addr_urb);
+		return;
+	}
+
+	usb_fill_bulk_urb(addr_urb, priv->udev,
+		usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA), &data->req_id,
+		sizeof(data->req_id), p54u_tx_cb, dev);
+	usb_fill_bulk_urb(data_urb, priv->udev,
+		usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA), data, len,
+		free_on_tx ? p54u_tx_free_cb : p54u_tx_cb, dev);
+
+	usb_submit_urb(addr_urb, GFP_ATOMIC);
+	usb_submit_urb(data_urb, GFP_ATOMIC);
+}
+
+static void p54u_tx_net2280(struct ieee80211_hw *dev, struct p54_control_hdr *data,
+			    size_t len, int free_on_tx)
+{
+	struct p54u_priv *priv = dev->priv;
+	struct urb *int_urb, *data_urb;
+	struct net2280_tx_hdr *hdr;
+	struct net2280_reg_write *reg;
+
+	reg = kmalloc(sizeof(*reg), GFP_ATOMIC);
+	if (!reg)
+		return;
+
+	int_urb = usb_alloc_urb(0, GFP_ATOMIC);
+	if (!int_urb) {
+		kfree(reg);
+		return;
+	}
+
+	data_urb = usb_alloc_urb(0, GFP_ATOMIC);
+	if (!data_urb) {
+		kfree(reg);
+		usb_free_urb(int_urb);
+		return;
+	}
+
+	reg->port = cpu_to_le16(NET2280_DEV_U32);
+	reg->addr = cpu_to_le32(P54U_DEV_BASE);
+	reg->val = cpu_to_le32(ISL38XX_DEV_INT_DATA);
+
+	len += sizeof(*data);
+	hdr = (void *)data - sizeof(*hdr);
+	memset(hdr, 0, sizeof(*hdr));
+	hdr->device_addr = data->req_id;
+	hdr->len = cpu_to_le16(len);
+
+	usb_fill_bulk_urb(int_urb, priv->udev,
+		usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV), reg, sizeof(*reg),
+		p54u_tx_free_cb, dev);
+	usb_submit_urb(int_urb, GFP_ATOMIC);
+
+	usb_fill_bulk_urb(data_urb, priv->udev,
+		usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA), hdr, len + sizeof(*hdr),
+		free_on_tx ? p54u_tx_free_cb : p54u_tx_cb, dev);
+	usb_submit_urb(data_urb, GFP_ATOMIC);
+}
+
+static int p54u_write(struct p54u_priv *priv,
+		      struct net2280_reg_write *buf,
+		      enum net2280_op_type type,
+		      __le32 addr, __le32 val)
+{
+	unsigned int ep;
+	int alen;
+
+	if (type & 0x0800)
+		ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV);
+	else
+		ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_BRG);
+
+	buf->port = cpu_to_le16(type);
+	buf->addr = addr;
+	buf->val = val;
+
+	return usb_bulk_msg(priv->udev, ep, buf, sizeof(*buf), &alen, 1000);
+}
+
+static int p54u_read(struct p54u_priv *priv, void *buf,
+		     enum net2280_op_type type,
+		     __le32 addr, __le32 *val)
+{
+	struct net2280_reg_read *read = buf;
+	__le32 *reg = buf;
+	unsigned int ep;
+	int alen, err;
+
+	if (type & 0x0800)
+		ep = P54U_PIPE_DEV;
+	else
+		ep = P54U_PIPE_BRG;
+
+	read->port = cpu_to_le16(type);
+	read->addr = addr;
+
+	err = usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
+			   read, sizeof(*read), &alen, 1000);
+	if (err)
+		return err;
+
+	err = usb_bulk_msg(priv->udev, usb_rcvbulkpipe(priv->udev, ep),
+			   reg, sizeof(*reg), &alen, 1000);
+	if (err)
+		return err;
+
+	*val = *reg;
+	return 0;
+}
+
+static int p54u_bulk_msg(struct p54u_priv *priv, unsigned int ep,
+			 void *data, size_t len)
+{
+	int alen;
+	return usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
+			    data, len, &alen, 2000);
+}
+
+static int p54u_read_eeprom(struct ieee80211_hw *dev)
+{
+	struct p54u_priv *priv = dev->priv;
+	void *buf;
+	struct p54_control_hdr *hdr;
+	int err, alen;
+	size_t offset = priv->hw_type ? 0x10 : 0x20;
+
+	buf = kmalloc(0x2020, GFP_KERNEL);
+	if (!buf) {
+		printk(KERN_ERR "prism54usb: cannot allocate memory for"
+		       "eeprom readback!\n");
+		return -ENOMEM;
+	}
+
+	if (priv->hw_type) {
+		*((u32 *) buf) = priv->common.rx_start;
+		err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, sizeof(u32));
+		if (err) {
+			printk(KERN_ERR "prism54usb: addr send failed\n");
+			goto fail;
+		}
+	} else {
+		struct net2280_reg_write *reg = buf;
+		reg->port = cpu_to_le16(NET2280_DEV_U32);
+		reg->addr = cpu_to_le32(P54U_DEV_BASE);
+		reg->val = cpu_to_le32(ISL38XX_DEV_INT_DATA);
+		err = p54u_bulk_msg(priv, P54U_PIPE_DEV, buf, sizeof(*reg));
+		if (err) {
+			printk(KERN_ERR "prism54usb: dev_int send failed\n");
+			goto fail;
+		}
+	}
+
+	hdr = buf + priv->common.tx_hdr_len;
+	p54_fill_eeprom_readback(hdr);
+	hdr->req_id = cpu_to_le32(priv->common.rx_start);
+	if (priv->common.tx_hdr_len) {
+		struct net2280_tx_hdr *tx_hdr = buf;
+		tx_hdr->device_addr = hdr->req_id;
+		tx_hdr->len = cpu_to_le16(EEPROM_READBACK_LEN);
+	}
+
+	/* we can just pretend to send 0x2000 bytes of nothing in the headers */
+	err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf,
+			    EEPROM_READBACK_LEN + priv->common.tx_hdr_len);
+	if (err) {
+		printk(KERN_ERR "prism54usb: eeprom req send failed\n");
+		goto fail;
+	}
+
+	err = usb_bulk_msg(priv->udev,
+			   usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA),
+			   buf, 0x2020, &alen, 1000);
+	if (!err && alen > offset) {
+		p54_parse_eeprom(dev, (u8 *)buf + offset, alen - offset);
+	} else {
+		printk(KERN_ERR "prism54usb: eeprom read failed!\n");
+		err = -EINVAL;
+		goto fail;
+	}
+
+ fail:
+	kfree(buf);
+	return err;
+}
+
+static int p54u_upload_firmware_3887(struct ieee80211_hw *dev)
+{
+	static char start_string[] = "~~~~<\r";
+	struct p54u_priv *priv = dev->priv;
+	const struct firmware *fw_entry = NULL;
+	int err, alen;
+	u8 carry = 0;
+	u8 *buf, *tmp, *data;
+	unsigned int left, remains, block_size;
+	struct x2_header *hdr;
+	unsigned long timeout;
+
+	tmp = buf = kmalloc(P54U_FW_BLOCK, GFP_KERNEL);
+	if (!buf) {
+		printk(KERN_ERR "p54usb: cannot allocate firmware upload buffer!\n");
+		err = -ENOMEM;
+		goto err_bufalloc;
+	}
+
+	memcpy(buf, start_string, 4);
+	err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, 4);
+	if (err) {
+		printk(KERN_ERR "p54usb: reset failed! (%d)\n", err);
+		goto err_reset;
+	}
+
+	err = request_firmware(&fw_entry, "isl3887usb_bare", &priv->udev->dev);
+	if (err) {
+		printk(KERN_ERR "p54usb: cannot find firmware (isl3887usb_bare)!\n");
+		goto err_req_fw_failed;
+	}
+
+	p54_parse_firmware(dev, fw_entry);
+
+	left = block_size = min((size_t)P54U_FW_BLOCK, fw_entry->size);
+	strcpy(buf, start_string);
+	left -= strlen(start_string);
+	tmp += strlen(start_string);
+
+	data = fw_entry->data;
+	remains = fw_entry->size;
+
+	hdr = (struct x2_header *)(buf + strlen(start_string));
+	memcpy(hdr->signature, X2_SIGNATURE, X2_SIGNATURE_SIZE);
+	hdr->fw_load_addr = cpu_to_le32(ISL38XX_DEV_FIRMWARE_ADDR);
+	hdr->fw_length = cpu_to_le32(fw_entry->size);
+	hdr->crc = cpu_to_le32(~crc32_le(~0, (void *)&hdr->fw_load_addr,
+					 sizeof(u32)*2));
+	left -= sizeof(*hdr);
+	tmp += sizeof(*hdr);
+
+	while (remains) {
+		while (left--) {
+			if (carry) {
+				*tmp++ = carry;
+				carry = 0;
+				remains--;
+				continue;
+			}
+			switch (*data) {
+			case '~':
+				*tmp++ = '}';
+				carry = '^';
+				break;
+			case '}':
+				*tmp++ = '}';
+				carry = ']';
+				break;
+			default:
+				*tmp++ = *data;
+				remains--;
+				break;
+			}
+			data++;
+		}
+
+		err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_size);
+		if (err) {
+			printk(KERN_ERR "prism54usb: firmware upload failed!\n");
+			goto err_upload_failed;
+		}
+
+		tmp = buf;
+		left = block_size = min((unsigned int)P54U_FW_BLOCK, remains);
+	}
+
+	*((__le32 *)buf) = cpu_to_le32(~crc32_le(~0, fw_entry->data, fw_entry->size));
+	err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, sizeof(u32));
+	if (err) {
+		printk(KERN_ERR "prism54usb: firmware upload failed!\n");
+		goto err_upload_failed;
+	}
+
+	timeout = jiffies + msecs_to_jiffies(1000);
+	while (!(err = usb_bulk_msg(priv->udev,
+		usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
+		if (alen > 2 && !memcmp(buf, "OK", 2))
+			break;
+
+		if (alen > 5 && !memcmp(buf, "ERROR", 5)) {
+			printk(KERN_INFO "prism54usb: firmware upload failed!\n");
+			err = -EINVAL;
+			break;
+		}
+
+		if (time_after(jiffies, timeout)) {
+			printk(KERN_ERR "prism54usb: firmware boot timed out!\n");
+			err = -ETIMEDOUT;
+			break;
+		}
+	}
+	if (err)
+		goto err_upload_failed;
+
+	buf[0] = 'g';
+	buf[1] = '\r';
+	err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, 2);
+	if (err) {
+		printk(KERN_ERR "prism54usb: firmware boot failed!\n");
+		goto err_upload_failed;
+	}
+
+	timeout = jiffies + msecs_to_jiffies(1000);
+	while (!(err = usb_bulk_msg(priv->udev,
+		usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
+		if (alen > 0 && buf[0] == 'g')
+			break;
+
+		if (time_after(jiffies, timeout)) {
+			err = -ETIMEDOUT;
+			break;
+		}
+	}
+	if (err)
+		goto err_upload_failed;
+
+  err_upload_failed:
+	release_firmware(fw_entry);
+  err_req_fw_failed:
+  err_reset:
+	kfree(buf);
+  err_bufalloc:
+	return err;
+}
+
+static int p54u_upload_firmware_net2280(struct ieee80211_hw *dev)
+{
+	struct p54u_priv *priv = dev->priv;
+	const struct firmware *fw_entry = NULL;
+	const struct p54p_csr *devreg = (const struct p54p_csr *) P54U_DEV_BASE;
+	int err, alen;
+	void *buf;
+	__le32 reg;
+	unsigned int remains, offset;
+	u8 *data;
+
+	buf = kmalloc(512, GFP_KERNEL);
+	if (!buf) {
+		printk(KERN_ERR "p54usb: firmware buffer alloc failed!\n");
+		return -ENOMEM;
+	}
+
+	err = request_firmware(&fw_entry, "isl3890usb", &priv->udev->dev);
+	if (err) {
+		printk(KERN_ERR "p54usb: cannot find firmware (isl3890usb)!\n");
+		kfree(buf);
+		return err;
+	}
+
+	p54_parse_firmware(dev, fw_entry);
+
+#define P54U_WRITE(type, addr, data) \
+	do {\
+		err = p54u_write(priv, buf, type,\
+				 cpu_to_le32((u32)(unsigned long)addr), data);\
+		if (err) \
+			goto fail;\
+	} while (0)
+
+#define P54U_READ(type, addr) \
+	do {\
+		err = p54u_read(priv, buf, type,\
+				cpu_to_le32((u32)(unsigned long)addr), &reg);\
+		if (err)\
+			goto fail;\
+	} while (0)
+
+	/* power down net2280 bridge */
+	P54U_READ(NET2280_BRG_U32, NET2280_GPIOCTL);
+	reg |= cpu_to_le32(P54U_BRG_POWER_DOWN);
+	reg &= cpu_to_le32(~P54U_BRG_POWER_UP);
+	P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
+
+	mdelay(100);
+
+	/* power up bridge */
+	reg |= cpu_to_le32(P54U_BRG_POWER_UP);
+	reg &= cpu_to_le32(~P54U_BRG_POWER_DOWN);
+	P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
+
+	mdelay(100);
+
+	P54U_WRITE(NET2280_BRG_U32, NET2280_DEVINIT,
+		   cpu_to_le32(NET2280_CLK_30Mhz |
+			       NET2280_PCI_ENABLE |
+			       NET2280_PCI_SOFT_RESET));
+
+	mdelay(20);
+
+	P54U_WRITE(NET2280_BRG_CFG_U16, PCI_COMMAND,
+		   cpu_to_le32(PCI_COMMAND_MEMORY |
+			       PCI_COMMAND_MASTER));
+
+	P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_0,
+		   cpu_to_le32(NET2280_BASE));
+
+	P54U_READ(NET2280_BRG_CFG_U16, PCI_STATUS);
+	reg |= cpu_to_le32(PCI_STATUS_REC_MASTER_ABORT);
+	P54U_WRITE(NET2280_BRG_CFG_U16, PCI_STATUS, reg);
+
+	// TODO: we really need this?
+	P54U_READ(NET2280_BRG_U32, NET2280_RELNUM);
+
+	P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_RSP,
+		   cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
+	P54U_WRITE(NET2280_BRG_U32, NET2280_EPC_RSP,
+		   cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
+
+	P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_2,
+		   cpu_to_le32(NET2280_BASE2));
+
+	/* finally done setting up the bridge */
+
+	P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | PCI_COMMAND,
+		   cpu_to_le32(PCI_COMMAND_MEMORY |
+			       PCI_COMMAND_MASTER));
+
+	P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | 0x40 /* TRDY timeout */, 0);
+	P54U_WRITE(NET2280_DEV_CFG_U32, 0x10000 | PCI_BASE_ADDRESS_0,
+		   cpu_to_le32(P54U_DEV_BASE));
+
+	P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
+	P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
+		   cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
+
+	/* do romboot */
+	P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable, 0);
+
+	P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
+	reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
+	reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RAMBOOT);
+	reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
+	P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
+
+	mdelay(20);
+
+	reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
+	P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
+
+	mdelay(20);
+
+	reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
+	P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
+
+	mdelay(100);
+
+	P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
+	P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
+
+	/* finally, we can upload firmware now! */
+	remains = fw_entry->size;
+	data = fw_entry->data;
+	offset = ISL38XX_DEV_FIRMWARE_ADDR;
+
+	while (remains) {
+		unsigned int block_len = min(remains, (unsigned int)512);
+		memcpy(buf, data, block_len);
+
+		err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_len);
+		if (err) {
+			printk(KERN_ERR "prism54usb: firmware block upload "
+			       "failed\n");
+			goto fail;
+		}
+
+		P54U_WRITE(NET2280_DEV_U32, &devreg->direct_mem_base,
+			   cpu_to_le32(0xc0000f00));
+
+		P54U_WRITE(NET2280_DEV_U32,
+			   0x0020 | (unsigned long)&devreg->direct_mem_win, 0);
+		P54U_WRITE(NET2280_DEV_U32,
+			   0x0020 | (unsigned long)&devreg->direct_mem_win,
+			   cpu_to_le32(1));
+
+		P54U_WRITE(NET2280_DEV_U32,
+			   0x0024 | (unsigned long)&devreg->direct_mem_win,
+			   cpu_to_le32(block_len));
+		P54U_WRITE(NET2280_DEV_U32,
+			   0x0028 | (unsigned long)&devreg->direct_mem_win,
+			   cpu_to_le32(offset));
+
+		P54U_WRITE(NET2280_DEV_U32, &devreg->dma_addr,
+			   cpu_to_le32(NET2280_EPA_FIFO_PCI_ADDR));
+		P54U_WRITE(NET2280_DEV_U32, &devreg->dma_len,
+			   cpu_to_le32(block_len >> 2));
+		P54U_WRITE(NET2280_DEV_U32, &devreg->dma_ctrl,
+			   cpu_to_le32(ISL38XX_DMA_MASTER_CONTROL_TRIGGER));
+
+		mdelay(10);
+
+		P54U_READ(NET2280_DEV_U32,
+			  0x002C | (unsigned long)&devreg->direct_mem_win);
+		if (!(reg & cpu_to_le32(ISL38XX_DMA_STATUS_DONE)) ||
+		    !(reg & cpu_to_le32(ISL38XX_DMA_STATUS_READY))) {
+			printk(KERN_ERR "prism54usb: firmware DMA transfer "
+			       "failed\n");
+			goto fail;
+		}
+
+		P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_STAT,
+			   cpu_to_le32(NET2280_FIFO_FLUSH));
+
+		remains -= block_len;
+		data += block_len;
+		offset += block_len;
+	}
+
+	/* do ramboot */
+	P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
+	reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
+	reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
+	reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RAMBOOT);
+	P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
+
+	mdelay(20);
+
+	reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
+	P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
+
+	reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
+	P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
+
+	mdelay(100);
+
+	P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
+	P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
+
+	/* start up the firmware */
+	P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable,
+		   cpu_to_le32(ISL38XX_INT_IDENT_INIT));
+
+	P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
+		   cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
+
+	P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1,
+		   cpu_to_le32(NET2280_PCI_INTA_INTERRUPT_ENABLE |
+			       NET2280_USB_INTERRUPT_ENABLE));
+
+	P54U_WRITE(NET2280_DEV_U32, &devreg->dev_int,
+		   cpu_to_le32(ISL38XX_DEV_INT_RESET));
+
+	err = usb_interrupt_msg(priv->udev,
+				usb_rcvbulkpipe(priv->udev, P54U_PIPE_INT),
+				buf, sizeof(__le32), &alen, 1000);
+	if (err || alen != sizeof(__le32))
+		goto fail;
+
+	P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
+	P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
+
+	if (!(reg & cpu_to_le32(ISL38XX_INT_IDENT_INIT)))
+		err = -EINVAL;
+
+	P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
+	P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
+		   cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
+
+#undef P54U_WRITE
+#undef P54U_READ
+
+ fail:
+	release_firmware(fw_entry);
+	kfree(buf);
+	return err;
+}
+
+static int p54u_open(struct ieee80211_hw *dev)
+{
+	struct p54u_priv *priv = dev->priv;
+	int err;
+
+	err = p54u_init_urbs(dev);
+	if (err) {
+		return err;
+	}
+
+	priv->common.open = p54u_init_urbs;
+
+	return 0;
+}
+
+static void p54u_stop(struct ieee80211_hw *dev)
+{
+	/* TODO: figure out how to reliably stop the 3887 and net2280 so
+	   the hardware is still usable next time we want to start it.
+	   until then, we just stop listening to the hardware.. */
+	p54u_free_urbs(dev);
+	return;
+}
+
+static int __devinit p54u_probe(struct usb_interface *intf,
+				const struct usb_device_id *id)
+{
+	struct usb_device *udev = interface_to_usbdev(intf);
+	struct ieee80211_hw *dev;
+	struct p54u_priv *priv;
+	int err;
+	unsigned int i, recognized_pipes;
+	DECLARE_MAC_BUF(mac);
+
+	dev = p54_init_common(sizeof(*priv));
+	if (!dev) {
+		printk(KERN_ERR "prism54usb: ieee80211 alloc failed\n");
+		return -ENOMEM;
+	}
+
+	priv = dev->priv;
+
+	SET_IEEE80211_DEV(dev, &intf->dev);
+	usb_set_intfdata(intf, dev);
+	priv->udev = udev;
+
+	usb_get_dev(udev);
+
+	/* really lazy and simple way of figuring out if we're a 3887 */
+	/* TODO: should just stick the identification in the device table */
+	i = intf->altsetting->desc.bNumEndpoints;
+	recognized_pipes = 0;
+	while (i--) {
+		switch (intf->altsetting->endpoint[i].desc.bEndpointAddress) {
+		case P54U_PIPE_DATA:
+		case P54U_PIPE_MGMT:
+		case P54U_PIPE_BRG:
+		case P54U_PIPE_DEV:
+		case P54U_PIPE_DATA | USB_DIR_IN:
+		case P54U_PIPE_MGMT | USB_DIR_IN:
+		case P54U_PIPE_BRG | USB_DIR_IN:
+		case P54U_PIPE_DEV | USB_DIR_IN:
+		case P54U_PIPE_INT | USB_DIR_IN:
+			recognized_pipes++;
+		}
+	}
+	priv->common.open = p54u_open;
+
+	if (recognized_pipes < P54U_PIPE_NUMBER) {
+		priv->hw_type = P54U_3887;
+		priv->common.tx = p54u_tx_3887;
+	} else {
+		dev->extra_tx_headroom += sizeof(struct net2280_tx_hdr);
+		priv->common.tx_hdr_len = sizeof(struct net2280_tx_hdr);
+		priv->common.tx = p54u_tx_net2280;
+	}
+	priv->common.stop = p54u_stop;
+
+	if (priv->hw_type)
+		err = p54u_upload_firmware_3887(dev);
+	else
+		err = p54u_upload_firmware_net2280(dev);
+	if (err)
+		goto err_free_dev;
+
+	err = p54u_read_eeprom(dev);
+	if (err)
+		goto err_free_dev;
+
+	if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
+		u8 perm_addr[ETH_ALEN];
+
+		printk(KERN_WARNING "prism54usb: Invalid hwaddr! Using randomly generated MAC addr\n");
+		random_ether_addr(perm_addr);
+		SET_IEEE80211_PERM_ADDR(dev, perm_addr);
+	}
+
+	skb_queue_head_init(&priv->rx_queue);
+
+	err = ieee80211_register_hw(dev);
+	if (err) {
+		printk(KERN_ERR "prism54usb: Cannot register netdevice\n");
+		goto err_free_dev;
+	}
+
+	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_dev:
+	ieee80211_free_hw(dev);
+	usb_set_intfdata(intf, NULL);
+	usb_put_dev(udev);
+	return err;
+}
+
+static void __devexit p54u_disconnect(struct usb_interface *intf)
+{
+	struct ieee80211_hw *dev = usb_get_intfdata(intf);
+	struct p54u_priv *priv;
+
+	if (!dev)
+		return;
+
+	ieee80211_unregister_hw(dev);
+
+	priv = dev->priv;
+	usb_put_dev(interface_to_usbdev(intf));
+	p54_free_common(dev);
+	ieee80211_free_hw(dev);
+}
+
+static struct usb_driver p54u_driver = {
+	.name	= "prism54usb",
+	.id_table = p54u_table,
+	.probe = p54u_probe,
+	.disconnect = p54u_disconnect,
+};
+
+static int __init p54u_init(void)
+{
+	return usb_register(&p54u_driver);
+}
+
+static void __exit p54u_exit(void)
+{
+	usb_deregister(&p54u_driver);
+}
+
+module_init(p54u_init);
+module_exit(p54u_exit);

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 */