diff options
Diffstat (limited to 'drivers/net/wimax/i2400m/i2400m.h')
| -rw-r--r-- | drivers/net/wimax/i2400m/i2400m.h | 755 |
1 files changed, 755 insertions, 0 deletions
diff --git a/drivers/net/wimax/i2400m/i2400m.h b/drivers/net/wimax/i2400m/i2400m.h new file mode 100644 index 000000000000..067c871cc226 --- /dev/null +++ b/drivers/net/wimax/i2400m/i2400m.h @@ -0,0 +1,755 @@ +/* + * Intel Wireless WiMAX Connection 2400m + * Declarations for bus-generic internal APIs + * + * + * Copyright (C) 2007-2008 Intel Corporation. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * + * Intel Corporation <linux-wimax@intel.com> + * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com> + * Yanir Lubetkin <yanirx.lubetkin@intel.com> + * - Initial implementation + * + * + * GENERAL DRIVER ARCHITECTURE + * + * The i2400m driver is split in the following two major parts: + * + * - bus specific driver + * - bus generic driver (this part) + * + * The bus specific driver sets up stuff specific to the bus the + * device is connected to (USB, SDIO, PCI, tam-tam...non-authoritative + * nor binding list) which is basically the device-model management + * (probe/disconnect, etc), moving data from device to kernel and + * back, doing the power saving details and reseting the device. + * + * For details on each bus-specific driver, see it's include file, + * i2400m-BUSNAME.h + * + * The bus-generic functionality break up is: + * + * - Firmware upload: fw.c - takes care of uploading firmware to the + * device. bus-specific driver just needs to provides a way to + * execute boot-mode commands and to reset the device. + * + * - RX handling: rx.c - receives data from the bus-specific code and + * feeds it to the network or WiMAX stack or uses it to modify + * the driver state. bus-specific driver only has to receive + * frames and pass them to this module. + * + * - TX handling: tx.c - manages the TX FIFO queue and provides means + * for the bus-specific TX code to pull data from the FIFO + * queue. bus-specific code just pulls frames from this module + * to sends them to the device. + * + * - netdev glue: netdev.c - interface with Linux networking + * stack. Pass around data frames, and configure when the + * device is up and running or shutdown (through ifconfig up / + * down). Bus-generic only. + * + * - control ops: control.c - implements various commmands for + * controlling the device. bus-generic only. + * + * - device model glue: driver.c - implements helpers for the + * device-model glue done by the bus-specific layer + * (setup/release the driver resources), turning the device on + * and off, handling the device reboots/resets and a few simple + * WiMAX stack ops. + * + * Code is also broken up in linux-glue / device-glue. + * + * Linux glue contains functions that deal mostly with gluing with the + * rest of the Linux kernel. + * + * Device-glue are functions that deal mostly with the way the device + * does things and talk the device's language. + * + * device-glue code is licensed BSD so other open source OSes can take + * it to implement their drivers. + * + * + * APIs AND HEADER FILES + * + * This bus generic code exports three APIs: + * + * - HDI (host-device interface) definitions common to all busses + * (include/linux/wimax/i2400m.h); these can be also used by user + * space code. + * - internal API for the bus-generic code + * - external API for the bus-specific drivers + * + * + * LIFE CYCLE: + * + * When the bus-specific driver probes, it allocates a network device + * with enough space for it's data structue, that must contain a + * &struct i2400m at the top. + * + * On probe, it needs to fill the i2400m members marked as [fill], as + * well as i2400m->wimax_dev.net_dev and call i2400m_setup(). The + * i2400m driver will only register with the WiMAX and network stacks; + * the only access done to the device is to read the MAC address so we + * can register a network device. This calls i2400m_dev_start() to + * load firmware, setup communication with the device and configure it + * for operation. + * + * At this point, control and data communications are possible. + * + * On disconnect/driver unload, the bus-specific disconnect function + * calls i2400m_release() to undo i2400m_setup(). i2400m_dev_stop() + * shuts the firmware down and releases resources uses to communicate + * with the device. + * + * While the device is up, it might reset. The bus-specific driver has + * to catch that situation and call i2400m_dev_reset_handle() to deal + * with it (reset the internal driver structures and go back to square + * one). + */ + +#ifndef __I2400M_H__ +#define __I2400M_H__ + +#include <linux/usb.h> +#include <linux/netdevice.h> +#include <linux/completion.h> +#include <linux/rwsem.h> +#include <asm/atomic.h> +#include <net/wimax.h> +#include <linux/wimax/i2400m.h> +#include <asm/byteorder.h> + +/* Misc constants */ +enum { + /* Firmware uploading */ + I2400M_BOOT_RETRIES = 3, + /* Size of the Boot Mode Command buffer */ + I2400M_BM_CMD_BUF_SIZE = 16 * 1024, + I2400M_BM_ACK_BUF_SIZE = 256, +}; + + +/* Firmware version we request when pulling the fw image file */ +#define I2400M_FW_VERSION "1.3" + + +/** + * i2400m_reset_type - methods to reset a device + * + * @I2400M_RT_WARM: Reset without device disconnection, device handles + * are kept valid but state is back to power on, with firmware + * re-uploaded. + * @I2400M_RT_COLD: Tell the device to disconnect itself from the bus + * and reconnect. Renders all device handles invalid. + * @I2400M_RT_BUS: Tells the bus to reset the device; last measure + * used when both types above don't work. + */ +enum i2400m_reset_type { + I2400M_RT_WARM, /* first measure */ + I2400M_RT_COLD, /* second measure */ + I2400M_RT_BUS, /* call in artillery */ +}; + +struct i2400m_reset_ctx; + +/** + * struct i2400m - descriptor for an Intel 2400m + * + * Members marked with [fill] must be filled out/initialized before + * calling i2400m_setup(). + * + * @bus_tx_block_size: [fill] SDIO imposes a 256 block size, USB 16, + * so we have a tx_blk_size variable that the bus layer sets to + * tell the engine how much of that we need. + * + * @bus_pl_size_max: [fill] Maximum payload size. + * + * @bus_dev_start: [fill] Function called by the bus-generic code + * [i2400m_dev_start()] to setup the bus-specific communications + * to the the device. See LIFE CYCLE above. + * + * NOTE: Doesn't need to upload the firmware, as that is taken + * care of by the bus-generic code. + * + * @bus_dev_stop: [fill] Function called by the bus-generic code + * [i2400m_dev_stop()] to shutdown the bus-specific communications + * to the the device. See LIFE CYCLE above. + * + * This function does not need to reset the device, just tear down + * all the host resources created to handle communication with + * the device. + * + * @bus_tx_kick: [fill] Function called by the bus-generic code to let + * the bus-specific code know that there is data available in the + * TX FIFO for transmission to the device. + * + * This function cannot sleep. + * + * @bus_reset: [fill] Function called by the bus-generic code to reset + * the device in in various ways. Doesn't need to wait for the + * reset to finish. + * + * If warm or cold reset fail, this function is expected to do a + * bus-specific reset (eg: USB reset) to get the device to a + * working state (even if it implies device disconecction). + * + * Note the warm reset is used by the firmware uploader to + * reinitialize the device. + * + * IMPORTANT: this is called very early in the device setup + * process, so it cannot rely on common infrastructure being laid + * out. + * + * @bus_bm_cmd_send: [fill] Function called to send a boot-mode + * command. Flags are defined in 'enum i2400m_bm_cmd_flags'. This + * is synchronous and has to return 0 if ok or < 0 errno code in + * any error condition. + * + * @bus_bm_wait_for_ack: [fill] Function called to wait for a + * boot-mode notification (that can be a response to a previously + * issued command or an asynchronous one). Will read until all the + * indicated size is read or timeout. Reading more or less data + * than asked for is an error condition. Return 0 if ok, < 0 errno + * code on error. + * + * The caller to this function will check if the response is a + * barker that indicates the device going into reset mode. + * + * @bus_fw_name: [fill] name of the firmware image (in most cases, + * they are all the same for a single release, except that they + * have the type of the bus embedded in the name (eg: + * i2400m-fw-X-VERSION.sbcf, where X is the bus name). + * + * @bus_bm_mac_addr_impaired: [fill] Set to true if the device's MAC + * address provided in boot mode is kind of broken and needs to + * be re-read later on. + * + * + * @wimax_dev: WiMAX generic device for linkage into the kernel WiMAX + * stack. Due to the way a net_device is allocated, we need to + * force this to be the first field so that we can get from + * netdev_priv() the right pointer. + * + * @state: device's state (as reported by it) + * + * @state_wq: waitqueue that is woken up whenever the state changes + * + * @tx_lock: spinlock to protect TX members + * + * @tx_buf: FIFO buffer for TX; we queue data here + * + * @tx_in: FIFO index for incoming data. Note this doesn't wrap around + * and it is always greater than @tx_out. + * + * @tx_out: FIFO index for outgoing data + * + * @tx_msg: current TX message that is active in the FIFO for + * appending payloads. + * + * @tx_sequence: current sequence number for TX messages from the + * device to the host. + * + * @tx_msg_size: size of the current message being transmitted by the + * bus-specific code. + * + * @tx_pl_num: total number of payloads sent + * + * @tx_pl_max: maximum number of payloads sent in a TX message + * + * @tx_pl_min: minimum number of payloads sent in a TX message + * + * @tx_num: number of TX messages sent + * + * @tx_size_acc: number of bytes in all TX messages sent + * (this is different to net_dev's statistics as it also counts + * control messages). + * + * @tx_size_min: smallest TX message sent. + * + * @tx_size_max: biggest TX message sent. + * + * @rx_lock: spinlock to protect RX members + * + * @rx_pl_num: total number of payloads received + * + * @rx_pl_max: maximum number of payloads received in a RX message + * + * @rx_pl_min: minimum number of payloads received in a RX message + * + * @rx_num: number of RX messages received + * + * @rx_size_acc: number of bytes in all RX messages received + * (this is different to net_dev's statistics as it also counts + * control messages). + * + * @rx_size_min: smallest RX message received. + * + * @rx_size_max: buggest RX message received. + * + * @init_mutex: Mutex used for serializing the device bringup + * sequence; this way if the device reboots in the middle, we + * don't try to do a bringup again while we are tearing down the + * one that failed. + * + * Can't reuse @msg_mutex because from within the bringup sequence + * we need to send messages to the device and thus use @msg_mutex. + * + * @msg_mutex: mutex used to send control commands to the device (we + * only allow one at a time, per host-device interface design). + * + * @msg_completion: used to wait for an ack to a control command sent + * to the device. + * + * @ack_skb: used to store the actual ack to a control command if the + * reception of the command was successful. Otherwise, a ERR_PTR() + * errno code that indicates what failed with the ack reception. + * + * Only valid after @msg_completion is woken up. Only updateable + * if @msg_completion is armed. Only touched by + * i2400m_msg_to_dev(). + * + * Protected by @rx_lock. In theory the command execution flow is + * sequential, but in case the device sends an out-of-phase or + * very delayed response, we need to avoid it trampling current + * execution. + * + * @bm_cmd_buf: boot mode command buffer for composing firmware upload + * commands. + * + * USB can't r/w to stack, vmalloc, etc...as well, we end up + * having to alloc/free a lot to compose commands, so we use these + * for stagging and not having to realloc all the time. + * + * This assumes the code always runs serialized. Only one thread + * can call i2400m_bm_cmd() at the same time. + * + * @bm_ack_buf: boot mode acknoledge buffer for staging reception of + * responses to commands. + * + * See @bm_cmd_buf. + * + * @work_queue: work queue for processing device reports. This + * workqueue cannot be used for processing TX or RX to the device, + * as from it we'll process device reports, which might require + * further communication with the device. + * + * @debugfs_dentry: hookup for debugfs files. + * These have to be in a separate directory, a child of + * (wimax_dev->debugfs_dentry) so they can be removed when the + * module unloads, as we don't keep each dentry. + */ +struct i2400m { + struct wimax_dev wimax_dev; /* FIRST! See doc */ + + unsigned updown:1; /* Network device is up or down */ + unsigned boot_mode:1; /* is the device in boot mode? */ + unsigned sboot:1; /* signed or unsigned fw boot */ + unsigned ready:1; /* all probing steps done */ + u8 trace_msg_from_user; /* echo rx msgs to 'trace' pipe */ + /* typed u8 so debugfs/u8 can tweak */ + enum i2400m_system_state state; + wait_queue_head_t state_wq; /* Woken up when on state updates */ + + size_t bus_tx_block_size; + size_t bus_pl_size_max; + int (*bus_dev_start)(struct i2400m *); + void (*bus_dev_stop)(struct i2400m *); + void (*bus_tx_kick)(struct i2400m *); + int (*bus_reset)(struct i2400m *, enum i2400m_reset_type); + ssize_t (*bus_bm_cmd_send)(struct i2400m *, + const struct i2400m_bootrom_header *, + size_t, int flags); + ssize_t (*bus_bm_wait_for_ack)(struct i2400m *, + struct i2400m_bootrom_header *, size_t); + const char *bus_fw_name; + unsigned bus_bm_mac_addr_impaired:1; + + spinlock_t tx_lock; /* protect TX state */ + void *tx_buf; + size_t tx_in, tx_out; + struct i2400m_msg_hdr *tx_msg; + size_t tx_sequence, tx_msg_size; + /* TX stats */ + unsigned tx_pl_num, tx_pl_max, tx_pl_min, + tx_num, tx_size_acc, tx_size_min, tx_size_max; + + /* RX stats */ + spinlock_t rx_lock; /* protect RX state */ + unsigned rx_pl_num, rx_pl_max, rx_pl_min, + rx_num, rx_size_acc, rx_size_min, rx_size_max; + + struct mutex msg_mutex; /* serialize command execution */ + struct completion msg_completion; + struct sk_buff *ack_skb; /* protected by rx_lock */ + + void *bm_ack_buf; /* for receiving acks over USB */ + void *bm_cmd_buf; /* for issuing commands over USB */ + + struct workqueue_struct *work_queue; + + struct mutex init_mutex; /* protect bringup seq */ + struct i2400m_reset_ctx *reset_ctx; /* protected by init_mutex */ + + struct work_struct wake_tx_ws; + struct sk_buff *wake_tx_skb; + + struct dentry *debugfs_dentry; +}; + + +/* + * Initialize a 'struct i2400m' from all zeroes + * + * This is a bus-generic API call. + */ +static inline +void i2400m_init(struct i2400m *i2400m) +{ + wimax_dev_init(&i2400m->wimax_dev); + + i2400m->boot_mode = 1; + init_waitqueue_head(&i2400m->state_wq); + + spin_lock_init(&i2400m->tx_lock); + i2400m->tx_pl_min = UINT_MAX; + i2400m->tx_size_min = UINT_MAX; + + spin_lock_init(&i2400m->rx_lock); + i2400m->rx_pl_min = UINT_MAX; + i2400m->rx_size_min = UINT_MAX; + + mutex_init(&i2400m->msg_mutex); + init_completion(&i2400m->msg_completion); + + mutex_init(&i2400m->init_mutex); + /* wake_tx_ws is initialized in i2400m_tx_setup() */ +} + + +/* + * Bus-generic internal APIs + * ------------------------- + */ + +static inline +struct i2400m *wimax_dev_to_i2400m(struct wimax_dev *wimax_dev) +{ + return container_of(wimax_dev, struct i2400m, wimax_dev); +} + +static inline +struct i2400m *net_dev_to_i2400m(struct net_device *net_dev) +{ + return wimax_dev_to_i2400m(netdev_priv(net_dev)); +} + +/* + * Boot mode support + */ + +/** + * i2400m_bm_cmd_flags - flags to i2400m_bm_cmd() + * + * @I2400M_BM_CMD_RAW: send the command block as-is, without doing any + * extra processing for adding CRC. + */ +enum i2400m_bm_cmd_flags { + I2400M_BM_CMD_RAW = 1 << 2, +}; + +/** + * i2400m_bri - Boot-ROM indicators + * + * Flags for i2400m_bootrom_init() and i2400m_dev_bootstrap() [which + * are passed from things like i2400m_setup()]. Can be combined with + * |. + * + * @I2400M_BRI_SOFT: The device rebooted already and a reboot + * barker received, proceed directly to ack the boot sequence. + * @I2400M_BRI_NO_REBOOT: Do not reboot the device and proceed + * directly to wait for a reboot barker from the device. + * @I2400M_BRI_MAC_REINIT: We need to reinitialize the boot + * rom after reading the MAC adress. This is quite a dirty hack, + * if you ask me -- the device requires the bootrom to be + * intialized after reading the MAC address. + */ +enum i2400m_bri { + I2400M_BRI_SOFT = 1 << 1, + I2400M_BRI_NO_REBOOT = 1 << 2, + I2400M_BRI_MAC_REINIT = 1 << 3, +}; + +extern void i2400m_bm_cmd_prepare(struct i2400m_bootrom_header *); +extern int i2400m_dev_bootstrap(struct i2400m *, enum i2400m_bri); +extern int i2400m_read_mac_addr(struct i2400m *); +extern int i2400m_bootrom_init(struct i2400m *, enum i2400m_bri); + +/* Make/grok boot-rom header commands */ + +static inline +__le32 i2400m_brh_command(enum i2400m_brh_opcode opcode, unsigned use_checksum, + unsigned direct_access) +{ + return cpu_to_le32( + I2400M_BRH_SIGNATURE + | (direct_access ? I2400M_BRH_DIRECT_ACCESS : 0) + | I2400M_BRH_RESPONSE_REQUIRED /* response always required */ + | (use_checksum ? I2400M_BRH_USE_CHECKSUM : 0) + | (opcode & I2400M_BRH_OPCODE_MASK)); +} + +static inline +void i2400m_brh_set_opcode(struct i2400m_bootrom_header *hdr, + enum i2400m_brh_opcode opcode) +{ + hdr->command = cpu_to_le32( + (le32_to_cpu(hdr->command) & ~I2400M_BRH_OPCODE_MASK) + | (opcode & I2400M_BRH_OPCODE_MASK)); +} + +static inline +unsigned i2400m_brh_get_opcode(const struct i2400m_bootrom_header *hdr) +{ + return le32_to_cpu(hdr->command) & I2400M_BRH_OPCODE_MASK; +} + +static inline +unsigned i2400m_brh_get_response(const struct i2400m_bootrom_header *hdr) +{ + return (le32_to_cpu(hdr->command) & I2400M_BRH_RESPONSE_MASK) + >> I2400M_BRH_RESPONSE_SHIFT; +} + +static inline +unsigned i2400m_brh_get_use_checksum(const struct i2400m_bootrom_header *hdr) +{ + return le32_to_cpu(hdr->command) & I2400M_BRH_USE_CHECKSUM; +} + +static inline +unsigned i2400m_brh_get_response_required( + const struct i2400m_bootrom_header *hdr) +{ + return le32_to_cpu(hdr->command) & I2400M_BRH_RESPONSE_REQUIRED; +} + +static inline +unsigned i2400m_brh_get_direct_access(const struct i2400m_bootrom_header *hdr) +{ + return le32_to_cpu(hdr->command) & I2400M_BRH_DIRECT_ACCESS; +} + +static inline +unsigned i2400m_brh_get_signature(const struct i2400m_bootrom_header *hdr) +{ + return (le32_to_cpu(hdr->command) & I2400M_BRH_SIGNATURE_MASK) + >> I2400M_BRH_SIGNATURE_SHIFT; +} + + +/* + * Driver / device setup and internal functions + */ +extern void i2400m_netdev_setup(struct net_device *net_dev); +extern int i2400m_tx_setup(struct i2400m *); +extern void i2400m_wake_tx_work(struct work_struct *); +extern void i2400m_tx_release(struct i2400m *); + +extern void i2400m_net_rx(struct i2400m *, struct sk_buff *, unsigned, + const void *, int); +enum i2400m_pt; +extern int i2400m_tx(struct i2400m *, const void *, size_t, enum i2400m_pt); + +#ifdef CONFIG_DEBUG_FS +extern int i2400m_debugfs_add(struct i2400m *); +extern void i2400m_debugfs_rm(struct i2400m *); +#else +static inline int i2400m_debugfs_add(struct i2400m *i2400m) +{ + return 0; +} +static inline void i2400m_debugfs_rm(struct i2400m *i2400m) {} +#endif + +/* Called by _dev_start()/_dev_stop() to initialize the device itself */ +extern int i2400m_dev_initialize(struct i2400m *); +extern void i2400m_dev_shutdown(struct i2400m *); + +extern struct attribute_group i2400m_dev_attr_group; + +extern int i2400m_schedule_work(struct i2400m *, + void (*)(struct work_struct *), gfp_t); + +/* HDI message's payload description handling */ + +static inline +size_t i2400m_pld_size(const struct i2400m_pld *pld) +{ + return I2400M_PLD_SIZE_MASK & le32_to_cpu(pld->val); +} + +static inline +enum i2400m_pt i2400m_pld_type(const struct i2400m_pld *pld) +{ + return (I2400M_PLD_TYPE_MASK & le32_to_cpu(pld->val)) + >> I2400M_PLD_TYPE_SHIFT; +} + +static inline +void i2400m_pld_set(struct i2400m_pld *pld, size_t size, + enum i2400m_pt type) +{ + pld->val = cpu_to_le32( + ((type << I2400M_PLD_TYPE_SHIFT) & I2400M_PLD_TYPE_MASK) + | (size & I2400M_PLD_SIZE_MASK)); +} + + +/* + * API for the bus-specific drivers + * -------------------------------- + */ + +static inline +struct i2400m *i2400m_get(struct i2400m *i2400m) +{ + dev_hold(i2400m->wimax_dev.net_dev); + return i2400m; +} + +static inline +void i2400m_put(struct i2400m *i2400m) +{ + dev_put(i2400m->wimax_dev.net_dev); +} + +extern int i2400m_dev_reset_handle(struct i2400m *); + +/* + * _setup()/_release() are called by the probe/disconnect functions of + * the bus-specific drivers. + */ +extern int i2400m_setup(struct i2400m *, enum i2400m_bri bm_flags); +extern void i2400m_release(struct i2400m *); + +extern int i2400m_rx(struct i2400m *, struct sk_buff *); +extern struct i2400m_msg_hdr *i2400m_tx_msg_get(struct i2400m *, size_t *); +extern void i2400m_tx_msg_sent(struct i2400m *); + +static const __le32 i2400m_NBOOT_BARKER[4] = { + __constant_cpu_to_le32(I2400M_NBOOT_BARKER), + __constant_cpu_to_le32(I2400M_NBOOT_BARKER), + __constant_cpu_to_le32(I2400M_NBOOT_BARKER), + __constant_cpu_to_le32(I2400M_NBOOT_BARKER) +}; + +static const __le32 i2400m_SBOOT_BARKER[4] = { + __constant_cpu_to_le32(I2400M_SBOOT_BARKER), + __constant_cpu_to_le32(I2400M_SBOOT_BARKER), + __constant_cpu_to_le32(I2400M_SBOOT_BARKER), + __constant_cpu_to_le32(I2400M_SBOOT_BARKER) +}; + + +/* + * Utility functions + */ + +static inline +struct device *i2400m_dev(struct i2400m *i2400m) +{ + return i2400m->wimax_dev.net_dev->dev.parent; +} + +/* + * Helper for scheduling simple work functions + * + * This struct can get any kind of payload attached (normally in the + * form of a struct where you pack the stuff you want to pass to the + * _work function). + */ +struct i2400m_work { + struct work_struct ws; + struct i2400m *i2400m; + u8 pl[0]; +}; +extern int i2400m_queue_work(struct i2400m *, + void (*)(struct work_struct *), gfp_t, + const void *, size_t); + +extern int i2400m_msg_check_status(const struct i2400m_l3l4_hdr *, + char *, size_t); +extern int i2400m_msg_size_check(struct i2400m *, + const struct i2400m_l3l4_hdr *, size_t); +extern struct sk_buff *i2400m_msg_to_dev(struct i2400m *, const void *, size_t); +extern void i2400m_msg_to_dev_cancel_wait(struct i2400m *, int); +extern void i2400m_msg_ack_hook(struct i2400m *, + const struct i2400m_l3l4_hdr *, size_t); +extern void i2400m_report_hook(struct i2400m *, + const struct i2400m_l3l4_hdr *, size_t); +extern int i2400m_cmd_enter_powersave(struct i2400m *); +extern int i2400m_cmd_get_state(struct i2400m *); +extern int i2400m_cmd_exit_idle(struct i2400m *); +extern struct sk_buff *i2400m_get_device_info(struct i2400m *); +extern int i2400m_firmware_check(struct i2400m *); +extern int i2400m_set_init_config(struct i2400m *, + const struct i2400m_tlv_hdr **, size_t); + +static inline +struct usb_endpoint_descriptor *usb_get_epd(struct usb_interface *iface, int ep) +{ + return &iface->cur_altsetting->endpoint[ep].desc; +} + +extern int i2400m_op_rfkill_sw_toggle(struct wimax_dev *, + enum wimax_rf_state); +extern void i2400m_report_tlv_rf_switches_status( + struct i2400m *, const struct i2400m_tlv_rf_switches_status *); + + +/* + * Do a millisecond-sleep for allowing wireshark to dump all the data + * packets. Used only for debugging. + */ +static inline +void __i2400m_msleep(unsigned ms) +{ +#if 1 +#else + msleep(ms); +#endif +} + +/* Module parameters */ + +extern int i2400m_idle_mode_disabled; + + +#endif /* #ifndef __I2400M_H__ */ |