p54: move to separate directory

Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 files changed, 3746 insertions, 0 deletions

diff --git a/drivers/net/wireless/p54/Kconfig b/drivers/net/wireless/p54/Kconfig
new file mode 100644
index 000000000000..d3469d08f966
--- /dev/null
+++ b/drivers/net/wireless/p54/Kconfig
@@ -0,0 +1,63 @@
+config P54_COMMON
+        tristate "Softmac Prism54 support"
+        depends on MAC80211 && WLAN_80211 && FW_LOADER && EXPERIMENTAL
+        ---help---
+          This is common code for isl38xx based cards.
+          This module does nothing by itself - the USB/PCI frontends
+          also need to be enabled in order to support any devices.
+
+          These devices require softmac firmware which can be found at
+          http://prism54.org/
+
+          If you choose to build a module, it'll be called p54common.
+
+config P54_USB
+        tristate "Prism54 USB support"
+        depends on P54_COMMON && USB
+        select CRC32
+        ---help---
+          This driver is for USB isl38xx based wireless cards.
+          These are USB based adapters found in devices such as:
+
+          3COM 3CRWE254G72
+          SMC 2862W-G
+          Accton 802.11g WN4501 USB
+          Siemens Gigaset USB
+          Netgear WG121
+          Netgear WG111
+          Medion 40900, Roper Europe
+          Shuttle PN15, Airvast WM168g, IOGear GWU513
+          Linksys WUSB54G
+          Linksys WUSB54G Portable
+          DLink DWL-G120 Spinnaker
+          DLink DWL-G122
+          Belkin F5D7050 ver 1000
+          Cohiba Proto board
+          SMC 2862W-G version 2
+          U.S. Robotics U5 802.11g Adapter
+          FUJITSU E-5400 USB D1700
+          Sagem XG703A
+          DLink DWL-G120 Cohiba
+          Spinnaker Proto board
+          Linksys WUSB54AG
+          Inventel UR054G
+          Spinnaker DUT
+
+          These devices require softmac firmware which can be found at
+          http://prism54.org/
+
+          If you choose to build a module, it'll be called p54usb.
+
+config P54_PCI
+        tristate "Prism54 PCI support"
+        depends on P54_COMMON && PCI
+        ---help---
+          This driver is for PCI isl38xx based wireless cards.
+          This driver supports most devices that are supported by the
+          fullmac prism54 driver plus many devices which are not
+          supported by the fullmac driver/firmware.
+
+          This driver requires softmac firmware which can be found at
+          http://prism54.org/
+
+          If you choose to build a module, it'll be called p54pci.
diff --git a/drivers/net/wireless/p54/Makefile b/drivers/net/wireless/p54/Makefile
new file mode 100644
index 000000000000..4fa9ce717360
--- /dev/null
+++ b/drivers/net/wireless/p54/Makefile
@@ -0,0 +1,3 @@
+obj-$(CONFIG_P54_COMMON)        += p54common.o
+obj-$(CONFIG_P54_USB)           += p54usb.o
+obj-$(CONFIG_P54_PCI)           += p54pci.o
diff --git a/drivers/net/wireless/p54/net2280.h b/drivers/net/wireless/p54/net2280.h
new file mode 100644
index 000000000000..120eb831b287
--- /dev/null
+++ b/drivers/net/wireless/p54/net2280.h
@@ -0,0 +1,452 @@
+#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 */
diff --git a/drivers/net/wireless/p54/p54.h b/drivers/net/wireless/p54/p54.h
new file mode 100644
index 000000000000..06d2c67f4c81
--- /dev/null
+++ b/drivers/net/wireless/p54/p54.h
@@ -0,0 +1,77 @@
+#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[ETH_ALEN];
+        u8 bssid[ETH_ALEN];
+        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;
+        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 */
diff --git a/drivers/net/wireless/p54/p54common.c b/drivers/net/wireless/p54/p54common.c
new file mode 100644
index 000000000000..63f9badf3f52
--- /dev/null
+++ b/drivers/net/wireless/p54/p54common.c
@@ -0,0 +1,1051 @@
+
+/*
+ * 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");
+
+static struct ieee80211_rate p54_rates[] = {
+        { .bitrate = 10, .hw_value = 0, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+        { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+        { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+        { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+        { .bitrate = 60, .hw_value = 4, },
+        { .bitrate = 90, .hw_value = 5, },
+        { .bitrate = 120, .hw_value = 6, },
+        { .bitrate = 180, .hw_value = 7, },
+        { .bitrate = 240, .hw_value = 8, },
+        { .bitrate = 360, .hw_value = 9, },
+        { .bitrate = 480, .hw_value = 10, },
+        { .bitrate = 540, .hw_value = 11, },
+};
+
+static struct ieee80211_channel p54_channels[] = {
+        { .center_freq = 2412, .hw_value = 1, },
+        { .center_freq = 2417, .hw_value = 2, },
+        { .center_freq = 2422, .hw_value = 3, },
+        { .center_freq = 2427, .hw_value = 4, },
+        { .center_freq = 2432, .hw_value = 5, },
+        { .center_freq = 2437, .hw_value = 6, },
+        { .center_freq = 2442, .hw_value = 7, },
+        { .center_freq = 2447, .hw_value = 8, },
+        { .center_freq = 2452, .hw_value = 9, },
+        { .center_freq = 2457, .hw_value = 10, },
+        { .center_freq = 2462, .hw_value = 11, },
+        { .center_freq = 2467, .hw_value = 12, },
+        { .center_freq = 2472, .hw_value = 13, },
+        { .center_freq = 2484, .hw_value = 14, },
+};
+
+static struct ieee80211_supported_band band_2GHz = {
+        .channels = p54_channels,
+        .n_channels = ARRAY_SIZE(p54_channels),
+        .bitrates = p54_rates,
+        .n_bitrates = ARRAY_SIZE(p54_rates),
+};
+
+
+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(*(__be32 *)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(((__le32 *)bootrec->data)[1]);
+                        /* FIXME add sanity checking */
+                        priv->rx_end = le32_to_cpu(((__le32 *)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 == cpu_to_le16(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;
+        unsigned int data_len, entry_len;
+        void *tmp;
+        int err;
+        u8 *end = (u8 *)eeprom + len;
+
+        wrap = (struct eeprom_pda_wrap *) eeprom;
+        entry = (void *)wrap->data + le16_to_cpu(wrap->len);
+
+        /* verify that at least the entry length/code fits */
+        while ((u8 *)entry <= end - sizeof(*entry)) {
+                entry_len = le16_to_cpu(entry->len);
+                data_len = ((entry_len - 1) << 1);
+
+                /* abort if entry exceeds whole structure */
+                if ((u8 *)entry + sizeof(*entry) + data_len > end)
+                        break;
+
+                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:
+                        /* make it overrun */
+                        entry_len = len;
+                        break;
+                default:
+                        printk(KERN_INFO "p54: unknown eeprom code : 0x%x\n",
+                                le16_to_cpu(entry->code));
+                        break;
+                }
+
+                entry = (void *)entry + (entry_len + 1)*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;
+        /* XX correct? */
+        rx_status.rate_idx = hdr->rate & 0xf;
+        rx_status.freq = freq;
+        rx_status.band = IEEE80211_BAND_2GHZ;
+        rx_status.antenna = hdr->antenna;
+        rx_status.mactime = le64_to_cpu(hdr->timestamp);
+        rx_status.flag |= RX_FLAG_TSFT;
+
+        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;
+                        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;
+                        }
+                        memset(&status, 0, sizeof(status));
+                        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->hw_value;
+        if (control->flags & IEEE80211_TXCTL_SHORT_PREAMBLE)
+                rate |= 0x10;
+        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_ATOMIC);
+        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, _txop)      \
+do {                                                            \
+        queue.aifs = cpu_to_le16(ai_fs);                        \
+        queue.cwmin = cpu_to_le16(cw_min);                      \
+        queue.cwmax = cpu_to_le16(cw_max);                      \
+        queue.txop = cpu_to_le16(_txop);                        \
+} 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, 47);
+        P54_SET_QUEUE(vdcf->queue[1], 0x0002, 0x0007, 0x000f, 94);
+        P54_SET_QUEUE(vdcf->queue[2], 0x0003, 0x000f, 0x03ff, 0);
+        P54_SET_QUEUE(vdcf->queue[3], 0x0007, 0x000f, 0x03ff, 0);
+}
+
+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_start(struct ieee80211_hw *dev)
+{
+        struct p54_common *priv = dev->priv;
+        int err;
+
+        err = priv->open(dev);
+        if (!err)
+                priv->mode = IEEE80211_IF_TYPE_MNTR;
+
+        return err;
+}
+
+static void p54_stop(struct ieee80211_hw *dev)
+{
+        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->stop(dev);
+        priv->mode = IEEE80211_IF_TYPE_INVALID;
+}
+
+static int p54_add_interface(struct ieee80211_hw *dev,
+                             struct ieee80211_if_init_conf *conf)
+{
+        struct p54_common *priv = dev->priv;
+
+        if (priv->mode != IEEE80211_IF_TYPE_MNTR)
+                return -EOPNOTSUPP;
+
+        switch (conf->type) {
+        case IEEE80211_IF_TYPE_STA:
+                priv->mode = conf->type;
+                break;
+        default:
+                return -EOPNOTSUPP;
+        }
+
+        memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
+
+        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);
+
+        switch (conf->type) {
+        case IEEE80211_IF_TYPE_STA:
+                p54_set_filter(dev, 1, priv->mac_addr, NULL, 0, 0x15F, 0x1F4, 0);
+                break;
+        default:
+                BUG();  /* impossible */
+                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;
+        priv->mode = IEEE80211_IF_TYPE_MNTR;
+        memset(priv->mac_addr, 0, ETH_ALEN);
+        p54_set_filter(dev, 0, priv->mac_addr, NULL, 2, 0, 0, 0);
+}
+
+static int p54_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
+{
+        int ret;
+
+        ret = p54_set_freq(dev, cpu_to_le16(conf->channel->center_freq));
+        p54_set_vdcf(dev);
+        return ret;
+}
+
+static int p54_config_interface(struct ieee80211_hw *dev,
+                                struct ieee80211_vif *vif,
+                                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);
+        memcpy(priv->bssid, conf->bssid, ETH_ALEN);
+        return 0;
+}
+
+static void p54_configure_filter(struct ieee80211_hw *dev,
+                                 unsigned int changed_flags,
+                                 unsigned int *total_flags,
+                                 int mc_count, struct dev_mc_list *mclist)
+{
+        struct p54_common *priv = dev->priv;
+
+        *total_flags &= FIF_BCN_PRBRESP_PROMISC;
+
+        if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
+                if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
+                        p54_set_filter(dev, 0, priv->mac_addr,
+                                       NULL, 2, 0, 0, 0);
+                else
+                        p54_set_filter(dev, 0, priv->mac_addr,
+                                       priv->bssid, 2, 0, 0, 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->txop);
+        } 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,
+        .start                  = p54_start,
+        .stop                   = p54_stop,
+        .add_interface          = p54_add_interface,
+        .remove_interface       = p54_remove_interface,
+        .config                 = p54_config,
+        .config_interface       = p54_config_interface,
+        .configure_filter       = p54_configure_filter,
+        .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;
+
+        dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
+        if (!dev)
+                return NULL;
+
+        priv = dev->priv;
+        priv->mode = IEEE80211_IF_TYPE_INVALID;
+        skb_queue_head_init(&priv->tx_queue);
+        dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz;
+        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);
+
+        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);
diff --git a/drivers/net/wireless/p54/p54common.h b/drivers/net/wireless/p54/p54common.h
new file mode 100644
index 000000000000..c15b56e1d75e
--- /dev/null
+++ b/drivers/net/wireless/p54/p54common.h
@@ -0,0 +1,254 @@
+#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 {
+        __le32 magic;
+        __le16 pad;
+        __le16 len;
+        __le32 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));
+
+#endif /* PRISM54COMMON_H */
diff --git a/drivers/net/wireless/p54/p54pci.c b/drivers/net/wireless/p54/p54pci.c
new file mode 100644
index 000000000000..fa527723fbe0
--- /dev/null
+++ b/drivers/net/wireless/p54/p54pci.c
@@ -0,0 +1,697 @@
+
+/*
+ * 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;
+        __le32 *data;
+        u32 remains, left, device_addr;
+
+        P54P_WRITE(int_enable, cpu_to_le32(0));
+        P54P_READ(int_enable);
+        udelay(10);
+
+        reg = P54P_READ(ctrl_stat);
+        reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
+        reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RAMBOOT);
+        P54P_WRITE(ctrl_stat, reg);
+        P54P_READ(ctrl_stat);
+        udelay(10);
+
+        reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
+        P54P_WRITE(ctrl_stat, reg);
+        wmb();
+        udelay(10);
+
+        reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
+        P54P_WRITE(ctrl_stat, reg);
+        wmb();
+
+        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 = (__le32 *) 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;
+        struct p54p_ring_control *ring_control = priv->ring_control;
+        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(ring_control, 0, sizeof(*ring_control));
+        P54P_WRITE(ring_control_base, cpu_to_le32(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);
+
+        ring_control->rx_mgmt[0].host_addr = cpu_to_le32(rx_mapping);
+        ring_control->rx_mgmt[0].len = cpu_to_le16(0x2010);
+        ring_control->tx_data[0].host_addr = cpu_to_le32(tx_mapping);
+        ring_control->tx_data[0].device_addr = hdr->req_id;
+        ring_control->tx_data[0].len = cpu_to_le16(EEPROM_READBACK_LEN);
+
+        ring_control->host_idx[2] = cpu_to_le32(1);
+        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(ring_control->rx_mgmt[0].len);
+        if (le32_to_cpu(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, cpu_to_le32(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;
+        struct p54p_ring_control *ring_control = priv->ring_control;
+        u32 limit, host_idx, idx;
+
+        host_idx = le32_to_cpu(ring_control->host_idx[0]);
+        limit = host_idx;
+        limit -= le32_to_cpu(ring_control->device_idx[0]);
+        limit = ARRAY_SIZE(ring_control->rx_data) - limit;
+
+        idx = host_idx % ARRAY_SIZE(ring_control->rx_data);
+        while (limit-- > 1) {
+                struct p54p_desc *desc = &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(ring_control->rx_data);
+        }
+
+        wmb();
+        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;
+        struct p54p_ring_control *ring_control = priv->ring_control;
+        __le32 reg;
+
+        spin_lock(&priv->lock);
+        reg = P54P_READ(int_ident);
+        if (unlikely(reg == cpu_to_le32(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(ring_control->tx_data);
+                priv->tx_idx = idx = le32_to_cpu(ring_control->device_idx[1]);
+                idx %= ARRAY_SIZE(ring_control->tx_data);
+
+                while (i != idx) {
+                        desc = &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(ring_control->tx_data);
+                }
+
+                i = priv->rx_idx;
+                i %= ARRAY_SIZE(ring_control->rx_data);
+                priv->rx_idx = idx = le32_to_cpu(ring_control->device_idx[0]);
+                idx %= ARRAY_SIZE(ring_control->rx_data);
+                while (i != idx) {
+                        u16 len;
+                        struct sk_buff *skb;
+                        desc = &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(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;
+        struct p54p_ring_control *ring_control = priv->ring_control;
+        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(ring_control->device_idx[1]);
+        idx = le32_to_cpu(ring_control->host_idx[1]);
+        i = idx % ARRAY_SIZE(ring_control->tx_data);
+
+        mapping = pci_map_single(priv->pdev, data, len, PCI_DMA_TODEVICE);
+        desc = &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();
+        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(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, cpu_to_le32(priv->ring_control_dma));
+        P54P_READ(ring_control_base);
+        wmb();
+        udelay(10);
+
+        P54P_WRITE(int_enable, cpu_to_le32(ISL38XX_INT_IDENT_INIT));
+        P54P_READ(int_enable);
+        wmb();
+        udelay(10);
+
+        P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_RESET));
+        P54P_READ(dev_int);
+
+        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;
+        struct p54p_ring_control *ring_control = priv->ring_control;
+        unsigned int i;
+        struct p54p_desc *desc;
+
+        P54P_WRITE(int_enable, cpu_to_le32(0));
+        P54P_READ(int_enable);
+        udelay(10);
+
+        free_irq(priv->pdev->irq, dev);
+
+        P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_RESET));
+
+        for (i = 0; i < ARRAY_SIZE(priv->rx_buf); i++) {
+                desc = &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 = &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(ring_control, 0, sizeof(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_INVALID) {
+                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_INVALID) {
+                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);
diff --git a/drivers/net/wireless/p54/p54pci.h b/drivers/net/wireless/p54/p54pci.h
new file mode 100644
index 000000000000..5bedd7af385d
--- /dev/null
+++ b/drivers/net/wireless/p54/p54pci.h
@@ -0,0 +1,106 @@
+#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) (__force __le32)__raw_readl(&priv->map->r)
+#define P54P_WRITE(r, val) __raw_writel((__force u32)(__le32)(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 */
diff --git a/drivers/net/wireless/p54/p54usb.c b/drivers/net/wireless/p54/p54usb.c
new file mode 100644
index 000000000000..98ddbb3b3273
--- /dev/null
+++ b/drivers/net/wireless/p54/p54usb.c
@@ -0,0 +1,910 @@
+
+/*
+ * 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(0x083a, 0x5501)},   /* Phillips CPWUA054 */
+        {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(0x124a, 0x4025)},   /* IOGear GWU513 (GW3887IK chip) */
+        {USB_DEVICE(0x13b1, 0x000a)},   /* Linksys WUSB54G ver 2 */
+        {USB_DEVICE(0x13B1, 0x000C)},   /* Linksys WUSB54AG */
+        {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);
diff --git a/drivers/net/wireless/p54/p54usb.h b/drivers/net/wireless/p54/p54usb.h
new file mode 100644
index 000000000000..d1896b396c1c
--- /dev/null
+++ b/drivers/net/wireless/p54/p54usb.h
@@ -0,0 +1,133 @@
+#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 */