^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Intel Wireless WiMAX Connection 2400m
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * USB-specific i2400m driver definitions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2007-2008 Intel Corporation. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Redistribution and use in source and binary forms, with or without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * modification, are permitted provided that the following conditions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * are met:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * * Redistributions of source code must retain the above copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * notice, this list of conditions and the following disclaimer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * * Redistributions in binary form must reproduce the above copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * notice, this list of conditions and the following disclaimer in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * the documentation and/or other materials provided with the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * distribution.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * * Neither the name of Intel Corporation nor the names of its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * contributors may be used to endorse or promote products derived
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * from this software without specific prior written permission.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * Intel Corporation <linux-wimax@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * Yanir Lubetkin <yanirx.lubetkin@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * - Initial implementation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * This driver implements the bus-specific part of the i2400m for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * USB. Check i2400m.h for a generic driver description.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * ARCHITECTURE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * This driver listens to notifications sent from the notification
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * endpoint (in usb-notif.c); when data is ready to read, the code in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * there schedules a read from the device (usb-rx.c) and then passes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * the data to the generic RX code (rx.c).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * When the generic driver needs to send data (network or control), it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * queues up in the TX FIFO (tx.c) and that will notify the driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * through the i2400m->bus_tx_kick() callback
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * (usb-tx.c:i2400mu_bus_tx_kick) which will send the items in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * FIFO queue.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * This driver, as well, implements the USB-specific ops for the generic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * driver to be able to setup/teardown communication with the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * [i2400m_bus_dev_start() and i2400m_bus_dev_stop()], reseting the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * device [i2400m_bus_reset()] and performing firmware upload
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * [i2400m_bus_bm_cmd() and i2400_bus_bm_wait_for_ack()].
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #ifndef __I2400M_USB_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define __I2400M_USB_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #include "i2400m.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #include <linux/kthread.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * Error Density Count: cheapo error density (over time) counter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * Originally by Reinette Chatre <reinette.chatre@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * Embed an 'struct edc' somewhere. Each time there is a soft or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * retryable error, call edc_inc() and check if the error top
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * watermark has been reached.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) EDC_MAX_ERRORS = 10,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) EDC_ERROR_TIMEFRAME = HZ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) /* error density counter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) struct edc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) unsigned long timestart;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) u16 errorcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct i2400m_endpoint_cfg {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) unsigned char bulk_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) unsigned char notification;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) unsigned char reset_cold;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) unsigned char bulk_in;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) static inline void edc_init(struct edc *edc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) edc->timestart = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * edc_inc - report a soft error and check if we are over the watermark
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * @edc: pointer to error density counter.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * @max_err: maximum number of errors we can accept over the timeframe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * @timeframe: length of the timeframe (in jiffies).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * Returns: !0 1 if maximum acceptable errors per timeframe has been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) * exceeded. 0 otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * This is way to determine if the number of acceptable errors per time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * period has been exceeded. It is not accurate as there are cases in which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * this scheme will not work, for example if there are periodic occurrences
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * of errors that straddle updates to the start time. This scheme is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) * sufficient for our usage.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) * To use, embed a 'struct edc' somewhere, initialize it with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * edc_init() and when an error hits:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * if (do_something_fails_with_a_soft_error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * if (edc_inc(&my->edc, MAX_ERRORS, MAX_TIMEFRAME))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * Ops, hard error, do something about it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * Retry or ignore, depending on whatever
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) static inline int edc_inc(struct edc *edc, u16 max_err, u16 timeframe)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) unsigned long now;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) now = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) if (time_after(now, edc->timestart + timeframe)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) edc->errorcount = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) edc->timestart = now;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) } else if (++edc->errorcount > max_err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) edc->errorcount = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) edc->timestart = now;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) /* Host-Device interface for USB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) I2400M_USB_BOOT_RETRIES = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) I2400MU_MAX_NOTIFICATION_LEN = 256,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) I2400MU_BLK_SIZE = 16,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) I2400MU_PL_SIZE_MAX = 0x3EFF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) /* Device IDs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) USB_DEVICE_ID_I6050 = 0x0186,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) USB_DEVICE_ID_I6050_2 = 0x0188,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) USB_DEVICE_ID_I6150 = 0x07d6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) USB_DEVICE_ID_I6150_2 = 0x07d7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) USB_DEVICE_ID_I6150_3 = 0x07d9,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) USB_DEVICE_ID_I6250 = 0x0187,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) * struct i2400mu - descriptor for a USB connected i2400m
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * @i2400m: bus-generic i2400m implementation; has to be first (see
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * it's documentation in i2400m.h).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * @usb_dev: pointer to our USB device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * @usb_iface: pointer to our USB interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * @urb_edc: error density counter; used to keep a density-on-time tab
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * on how many soft (retryable or ignorable) errors we get. If we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * go over the threshold, we consider the bus transport is failing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * too much and reset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * @notif_urb: URB for receiving notifications from the device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) * @tx_kthread: thread we use for data TX. We use a thread because in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) * order to do deep power saving and put the device to sleep, we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) * need to call usb_autopm_*() [blocking functions].
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * @tx_wq: waitqueue for the TX kthread to sleep when there is no data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * to be sent; when more data is available, it is woken up by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * i2400mu_bus_tx_kick().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * @rx_kthread: thread we use for data RX. We use a thread because in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * order to do deep power saving and put the device to sleep, we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * need to call usb_autopm_*() [blocking functions].
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * @rx_wq: waitqueue for the RX kthread to sleep when there is no data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) * to receive. When data is available, it is woken up by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) * usb-notif.c:i2400mu_notification_grok().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * @rx_pending_count: number of rx-data-ready notifications that were
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * still not handled by the RX kthread.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) * @rx_size: current RX buffer size that is being used.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) * @rx_size_acc: accumulator of the sizes of the previous read
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * transactions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) * @rx_size_cnt: number of read transactions accumulated in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * @rx_size_acc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) * @do_autopm: disable(0)/enable(>0) calling the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) * usb_autopm_get/put_interface() barriers when executing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) * commands. See doc in i2400mu_suspend() for more information.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) * @rx_size_auto_shrink: if true, the rx_size is shrunk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) * automatically based on the average size of the received
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) * transactions. This allows the receive code to allocate smaller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) * chunks of memory and thus reduce pressure on the memory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) * allocator by not wasting so much space. By default it is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) * enabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) * @debugfs_dentry: hookup for debugfs files.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) * These have to be in a separate directory, a child of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) * (wimax_dev->debugfs_dentry) so they can be removed when the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) * module unloads, as we don't keep each dentry.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) struct i2400mu {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) struct i2400m i2400m; /* FIRST! See doc */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) struct usb_device *usb_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) struct usb_interface *usb_iface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) struct edc urb_edc; /* Error density counter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) struct i2400m_endpoint_cfg endpoint_cfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) struct urb *notif_urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) struct task_struct *tx_kthread;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) wait_queue_head_t tx_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) struct task_struct *rx_kthread;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) wait_queue_head_t rx_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) atomic_t rx_pending_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) size_t rx_size, rx_size_acc, rx_size_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) atomic_t do_autopm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) u8 rx_size_auto_shrink;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) struct dentry *debugfs_dentry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) unsigned i6050:1; /* 1 if this is a 6050 based SKU */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static inline
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) void i2400mu_init(struct i2400mu *i2400mu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) i2400m_init(&i2400mu->i2400m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) edc_init(&i2400mu->urb_edc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) init_waitqueue_head(&i2400mu->tx_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) atomic_set(&i2400mu->rx_pending_count, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) init_waitqueue_head(&i2400mu->rx_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) i2400mu->rx_size = PAGE_SIZE - sizeof(struct skb_shared_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) atomic_set(&i2400mu->do_autopm, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) i2400mu->rx_size_auto_shrink = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) int i2400mu_notification_setup(struct i2400mu *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) void i2400mu_notification_release(struct i2400mu *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) int i2400mu_rx_setup(struct i2400mu *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) void i2400mu_rx_release(struct i2400mu *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) void i2400mu_rx_kick(struct i2400mu *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) int i2400mu_tx_setup(struct i2400mu *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) void i2400mu_tx_release(struct i2400mu *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) void i2400mu_bus_tx_kick(struct i2400m *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) ssize_t i2400mu_bus_bm_cmd_send(struct i2400m *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) const struct i2400m_bootrom_header *, size_t,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) ssize_t i2400mu_bus_bm_wait_for_ack(struct i2400m *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) struct i2400m_bootrom_header *, size_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) #endif /* #ifndef __I2400M_USB_H__ */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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