^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Intel Wireless WiMAX Connection 2400m
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Linux driver model glue for USB device, reset & fw upload
^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 <linux-wimax@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Yanir Lubetkin <yanirx.lubetkin@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * See i2400m-usb.h for a general description of this driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * This file implements driver model glue, and hook ups for the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * generic driver to implement the bus-specific functions (device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * communication setup/tear down, firmware upload and resetting).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * ROADMAP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * i2400mu_probe()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * alloc_netdev()...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * i2400mu_netdev_setup()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * i2400mu_init()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * i2400m_netdev_setup()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * i2400m_setup()...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * i2400mu_disconnect
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * i2400m_release()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * free_netdev()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * i2400mu_suspend()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * i2400m_cmd_enter_powersave()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * i2400mu_notification_release()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * i2400mu_resume()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * i2400mu_notification_setup()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * i2400mu_bus_dev_start() Called by i2400m_dev_start() [who is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * i2400mu_tx_setup() called by i2400m_setup()]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * i2400mu_rx_setup()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * i2400mu_notification_setup()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * i2400mu_bus_dev_stop() Called by i2400m_dev_stop() [who is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * i2400mu_notification_release() called by i2400m_release()]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * i2400mu_rx_release()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * i2400mu_tx_release()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * i2400mu_bus_reset() Called by i2400m_reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * __i2400mu_reset()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * __i2400mu_send_barker()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * usb_reset_device()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #include "i2400m-usb.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #include <linux/wimax/i2400m.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #include <linux/debugfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define D_SUBMODULE usb
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #include "usb-debug-levels.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static char i2400mu_debug_params[128];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) module_param_string(debug, i2400mu_debug_params, sizeof(i2400mu_debug_params),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) MODULE_PARM_DESC(debug,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) "String of space-separated NAME:VALUE pairs, where NAMEs "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) "are the different debug submodules and VALUE are the "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) "initial debug value to set.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) /* Our firmware file name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) static const char *i2400mu_bus_fw_names_5x50[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #define I2400MU_FW_FILE_NAME_v1_5 "i2400m-fw-usb-1.5.sbcf"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) I2400MU_FW_FILE_NAME_v1_5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #define I2400MU_FW_FILE_NAME_v1_4 "i2400m-fw-usb-1.4.sbcf"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) I2400MU_FW_FILE_NAME_v1_4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static const char *i2400mu_bus_fw_names_6050[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define I6050U_FW_FILE_NAME_v1_5 "i6050-fw-usb-1.5.sbcf"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) I6050U_FW_FILE_NAME_v1_5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) NULL,
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) int i2400mu_bus_dev_start(struct i2400m *i2400m)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) struct i2400mu *i2400mu = container_of(i2400m, struct i2400mu, i2400m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct device *dev = &i2400mu->usb_iface->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) d_fnstart(3, dev, "(i2400m %p)\n", i2400m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) result = i2400mu_tx_setup(i2400mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) if (result < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) goto error_usb_tx_setup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) result = i2400mu_rx_setup(i2400mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) if (result < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) goto error_usb_rx_setup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) result = i2400mu_notification_setup(i2400mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (result < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) goto error_notif_setup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) d_fnend(3, dev, "(i2400m %p) = %d\n", i2400m, result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) error_notif_setup:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) i2400mu_rx_release(i2400mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) error_usb_rx_setup:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) i2400mu_tx_release(i2400mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) error_usb_tx_setup:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) d_fnend(3, dev, "(i2400m %p) = void\n", i2400m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) void i2400mu_bus_dev_stop(struct i2400m *i2400m)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) struct i2400mu *i2400mu = container_of(i2400m, struct i2400mu, i2400m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) struct device *dev = &i2400mu->usb_iface->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) d_fnstart(3, dev, "(i2400m %p)\n", i2400m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) i2400mu_notification_release(i2400mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) i2400mu_rx_release(i2400mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) i2400mu_tx_release(i2400mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) d_fnend(3, dev, "(i2400m %p) = void\n", i2400m);
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) * Sends a barker buffer to the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * This helper will allocate a kmalloced buffer and use it to transmit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * (then free it). Reason for this is that other arches cannot use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * stack/vmalloc/text areas for DMA transfers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * Error recovery here is simpler: anything is considered a hard error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * and will move the reset code to use a last-resort bus-based reset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) int __i2400mu_send_barker(struct i2400mu *i2400mu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) const __le32 *barker,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) size_t barker_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) unsigned endpoint)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) struct usb_endpoint_descriptor *epd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) int pipe, actual_len, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) struct device *dev = &i2400mu->usb_iface->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) void *buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) int do_autopm = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) ret = usb_autopm_get_interface(i2400mu->usb_iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) dev_err(dev, "RESET: can't get autopm: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) do_autopm = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) buffer = kmalloc(barker_size, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) if (buffer == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) goto error_kzalloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) epd = usb_get_epd(i2400mu->usb_iface, endpoint);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) pipe = usb_sndbulkpipe(i2400mu->usb_dev, epd->bEndpointAddress);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) memcpy(buffer, barker, barker_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) retry:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) ret = usb_bulk_msg(i2400mu->usb_dev, pipe, buffer, barker_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) &actual_len, 200);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) switch (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) if (actual_len != barker_size) { /* Too short? drop it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) dev_err(dev, "E: %s: short write (%d B vs %zu "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) "expected)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) __func__, actual_len, barker_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) case -EPIPE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * Stall -- maybe the device is choking with our
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) * requests. Clear it and give it some time. If they
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) * happen to often, it might be another symptom, so we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) * reset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * No error handling for usb_clear_halt(0; if it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * works, the retry works; if it fails, this switch
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * does the error handling for us.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) if (edc_inc(&i2400mu->urb_edc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 10 * EDC_MAX_ERRORS, EDC_ERROR_TIMEFRAME)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) dev_err(dev, "E: %s: too many stalls in "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) "URB; resetting device\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) usb_queue_reset_device(i2400mu->usb_iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) /* fallthrough */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) usb_clear_halt(i2400mu->usb_dev, pipe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) msleep(10); /* give the device some time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) goto retry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) case -EINVAL: /* while removing driver */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) case -ENODEV: /* dev disconnect ... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) case -ENOENT: /* just ignore it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) case -ESHUTDOWN: /* and exit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) case -ECONNRESET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) ret = -ESHUTDOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) default: /* Some error? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (edc_inc(&i2400mu->urb_edc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) EDC_MAX_ERRORS, EDC_ERROR_TIMEFRAME)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) dev_err(dev, "E: %s: maximum errors in URB "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) "exceeded; resetting device\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) usb_queue_reset_device(i2400mu->usb_iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) dev_warn(dev, "W: %s: cannot send URB: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) __func__, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) goto retry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) kfree(buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) error_kzalloc:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) if (do_autopm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) usb_autopm_put_interface(i2400mu->usb_iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) * Reset a device at different levels (warm, cold or bus)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) * @i2400m: device descriptor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) * @reset_type: soft, warm or bus reset (I2400M_RT_WARM/SOFT/BUS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) * Warm and cold resets get a USB reset if they fail.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) * Warm reset:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) * The device will be fully reset internally, but won't be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) * disconnected from the USB bus (so no reenumeration will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) * happen). Firmware upload will be necessary.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) * The device will send a reboot barker in the notification endpoint
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) * that will trigger the driver to reinitialize the state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) * automatically from notif.c:i2400m_notification_grok() into
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) * i2400m_dev_bootstrap_delayed().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) * Cold and bus (USB) reset:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) * The device will be fully reset internally, disconnected from the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) * USB bus an a reenumeration will happen. Firmware upload will be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) * necessary. Thus, we don't do any locking or struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) * reinitialization, as we are going to be fully disconnected and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) * reenumerated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) * Note we need to return -ENODEV if a warm reset was requested and we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) * had to resort to a bus reset. See i2400m_op_reset(), wimax_reset()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) * and wimax_dev->op_reset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) * WARNING: no driver state saved/fixed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) int i2400mu_bus_reset(struct i2400m *i2400m, enum i2400m_reset_type rt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) struct i2400mu *i2400mu =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) container_of(i2400m, struct i2400mu, i2400m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) struct device *dev = i2400m_dev(i2400m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) static const __le32 i2400m_WARM_BOOT_BARKER[4] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) cpu_to_le32(I2400M_WARM_RESET_BARKER),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) cpu_to_le32(I2400M_WARM_RESET_BARKER),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) cpu_to_le32(I2400M_WARM_RESET_BARKER),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) cpu_to_le32(I2400M_WARM_RESET_BARKER),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) static const __le32 i2400m_COLD_BOOT_BARKER[4] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) cpu_to_le32(I2400M_COLD_RESET_BARKER),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) cpu_to_le32(I2400M_COLD_RESET_BARKER),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) cpu_to_le32(I2400M_COLD_RESET_BARKER),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) cpu_to_le32(I2400M_COLD_RESET_BARKER),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) d_fnstart(3, dev, "(i2400m %p rt %u)\n", i2400m, rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) if (rt == I2400M_RT_WARM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) result = __i2400mu_send_barker(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) i2400mu, i2400m_WARM_BOOT_BARKER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) sizeof(i2400m_WARM_BOOT_BARKER),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) i2400mu->endpoint_cfg.bulk_out);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) else if (rt == I2400M_RT_COLD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) result = __i2400mu_send_barker(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) i2400mu, i2400m_COLD_BOOT_BARKER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) sizeof(i2400m_COLD_BOOT_BARKER),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) i2400mu->endpoint_cfg.reset_cold);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) else if (rt == I2400M_RT_BUS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) result = usb_reset_device(i2400mu->usb_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) switch (result) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) case -EINVAL: /* device is gone */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) case -ENODEV:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) case -ENOENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) case -ESHUTDOWN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) result = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) break; /* We assume the device is disconnected */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) dev_err(dev, "USB reset failed (%d), giving up!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) result = -EINVAL; /* shut gcc up in certain arches */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) if (result < 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) && result != -EINVAL /* device is gone */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) && rt != I2400M_RT_BUS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) * Things failed -- resort to lower level reset, that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) * we queue in another context; the reason for this is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) * that the pre and post reset functionality requires
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) * the i2400m->init_mutex; RT_WARM and RT_COLD can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) * come from areas where i2400m->init_mutex is taken.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) dev_err(dev, "%s reset failed (%d); trying USB reset\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) rt == I2400M_RT_WARM ? "warm" : "cold", result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) usb_queue_reset_device(i2400mu->usb_iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) result = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) d_fnend(3, dev, "(i2400m %p rt %u) = %d\n", i2400m, rt, result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) static void i2400mu_get_drvinfo(struct net_device *net_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) struct ethtool_drvinfo *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) struct i2400m *i2400m = net_dev_to_i2400m(net_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) struct i2400mu *i2400mu = container_of(i2400m, struct i2400mu, i2400m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) struct usb_device *udev = i2400mu->usb_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) strlcpy(info->fw_version, i2400m->fw_name ? : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) sizeof(info->fw_version));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) usb_make_path(udev, info->bus_info, sizeof(info->bus_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) static const struct ethtool_ops i2400mu_ethtool_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) .get_drvinfo = i2400mu_get_drvinfo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) .get_link = ethtool_op_get_link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) void i2400mu_netdev_setup(struct net_device *net_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) struct i2400m *i2400m = net_dev_to_i2400m(net_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) struct i2400mu *i2400mu = container_of(i2400m, struct i2400mu, i2400m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) i2400mu_init(i2400mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) i2400m_netdev_setup(net_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) net_dev->ethtool_ops = &i2400mu_ethtool_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) * Debug levels control; see debug.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) struct d_level D_LEVEL[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) D_SUBMODULE_DEFINE(usb),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) D_SUBMODULE_DEFINE(fw),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) D_SUBMODULE_DEFINE(notif),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) D_SUBMODULE_DEFINE(rx),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) D_SUBMODULE_DEFINE(tx),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) size_t D_LEVEL_SIZE = ARRAY_SIZE(D_LEVEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) void i2400mu_debugfs_add(struct i2400mu *i2400mu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) struct dentry *dentry = i2400mu->i2400m.wimax_dev.debugfs_dentry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) dentry = debugfs_create_dir("i2400m-usb", dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) i2400mu->debugfs_dentry = dentry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) d_level_register_debugfs("dl_", usb, dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) d_level_register_debugfs("dl_", fw, dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) d_level_register_debugfs("dl_", notif, dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) d_level_register_debugfs("dl_", rx, dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) d_level_register_debugfs("dl_", tx, dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) /* Don't touch these if you don't know what you are doing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) debugfs_create_u8("rx_size_auto_shrink", 0600, dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) &i2400mu->rx_size_auto_shrink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) debugfs_create_size_t("rx_size", 0600, dentry, &i2400mu->rx_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) static struct device_type i2400mu_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) .name = "wimax",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) * Probe a i2400m interface and register it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) * @iface: USB interface to link to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) * @id: USB class/subclass/protocol id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) * @returns: 0 if ok, < 0 errno code on error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) * Alloc a net device, initialize the bus-specific details and then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) * calls the bus-generic initialization routine. That will register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) * the wimax and netdev devices, upload the firmware [using
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) * _bus_bm_*()], call _bus_dev_start() to finalize the setup of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) * communication with the device and then will start to talk to it to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) * finnish setting it up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) int i2400mu_probe(struct usb_interface *iface,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) const struct usb_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) struct net_device *net_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) struct device *dev = &iface->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) struct i2400m *i2400m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) struct i2400mu *i2400mu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) struct usb_device *usb_dev = interface_to_usbdev(iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) if (iface->cur_altsetting->desc.bNumEndpoints < 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) if (usb_dev->speed != USB_SPEED_HIGH)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) dev_err(dev, "device not connected as high speed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) /* Allocate instance [calls i2400m_netdev_setup() on it]. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) result = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) net_dev = alloc_netdev(sizeof(*i2400mu), "wmx%d", NET_NAME_UNKNOWN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) i2400mu_netdev_setup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) if (net_dev == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) dev_err(dev, "no memory for network device instance\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) goto error_alloc_netdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) SET_NETDEV_DEV(net_dev, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) SET_NETDEV_DEVTYPE(net_dev, &i2400mu_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) i2400m = net_dev_to_i2400m(net_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) i2400mu = container_of(i2400m, struct i2400mu, i2400m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) i2400m->wimax_dev.net_dev = net_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) i2400mu->usb_dev = usb_get_dev(usb_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) i2400mu->usb_iface = iface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) usb_set_intfdata(iface, i2400mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) i2400m->bus_tx_block_size = I2400MU_BLK_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) * Room required in the Tx queue for USB message to accommodate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) * a smallest payload while allocating header space is 16 bytes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) * Adding this room for the new tx message increases the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) * possibilities of including any payload with size <= 16 bytes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) i2400m->bus_tx_room_min = I2400MU_BLK_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) i2400m->bus_pl_size_max = I2400MU_PL_SIZE_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) i2400m->bus_setup = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) i2400m->bus_dev_start = i2400mu_bus_dev_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) i2400m->bus_dev_stop = i2400mu_bus_dev_stop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) i2400m->bus_release = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) i2400m->bus_tx_kick = i2400mu_bus_tx_kick;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) i2400m->bus_reset = i2400mu_bus_reset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) i2400m->bus_bm_retries = I2400M_USB_BOOT_RETRIES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) i2400m->bus_bm_cmd_send = i2400mu_bus_bm_cmd_send;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) i2400m->bus_bm_wait_for_ack = i2400mu_bus_bm_wait_for_ack;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) i2400m->bus_bm_mac_addr_impaired = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) switch (id->idProduct) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) case USB_DEVICE_ID_I6050:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) case USB_DEVICE_ID_I6050_2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) case USB_DEVICE_ID_I6150:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) case USB_DEVICE_ID_I6150_2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) case USB_DEVICE_ID_I6150_3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) case USB_DEVICE_ID_I6250:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) i2400mu->i6050 = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) if (i2400mu->i6050) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) i2400m->bus_fw_names = i2400mu_bus_fw_names_6050;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) i2400mu->endpoint_cfg.bulk_out = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) i2400mu->endpoint_cfg.notification = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) i2400mu->endpoint_cfg.reset_cold = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) i2400mu->endpoint_cfg.bulk_in = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) i2400m->bus_fw_names = i2400mu_bus_fw_names_5x50;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) i2400mu->endpoint_cfg.bulk_out = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) i2400mu->endpoint_cfg.notification = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) i2400mu->endpoint_cfg.reset_cold = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) i2400mu->endpoint_cfg.bulk_in = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) iface->needs_remote_wakeup = 1; /* autosuspend (15s delay) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) device_init_wakeup(dev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) pm_runtime_set_autosuspend_delay(&usb_dev->dev, 15000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) usb_enable_autosuspend(usb_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) result = i2400m_setup(i2400m, I2400M_BRI_MAC_REINIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) if (result < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) dev_err(dev, "cannot setup device: %d\n", result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) goto error_setup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) i2400mu_debugfs_add(i2400mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) error_setup:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) usb_set_intfdata(iface, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) usb_put_dev(i2400mu->usb_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) free_netdev(net_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) error_alloc_netdev:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) * Disconnect a i2400m from the system.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) * i2400m_stop() has been called before, so al the rx and tx contexts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) * have been taken down already. Make sure the queue is stopped,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) * unregister netdev and i2400m, free and kill.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) void i2400mu_disconnect(struct usb_interface *iface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) struct i2400mu *i2400mu = usb_get_intfdata(iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) struct i2400m *i2400m = &i2400mu->i2400m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) struct net_device *net_dev = i2400m->wimax_dev.net_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) struct device *dev = &iface->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) d_fnstart(3, dev, "(iface %p i2400m %p)\n", iface, i2400m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) debugfs_remove_recursive(i2400mu->debugfs_dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) i2400m_release(i2400m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) usb_set_intfdata(iface, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) usb_put_dev(i2400mu->usb_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) free_netdev(net_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) d_fnend(3, dev, "(iface %p i2400m %p) = void\n", iface, i2400m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) * Get the device ready for USB port or system standby and hibernation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) * USB port and system standby are handled the same.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) * When the system hibernates, the USB device is powered down and then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) * up, so we don't really have to do much here, as it will be seen as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) * a reconnect. Still for simplicity we consider this case the same as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) * suspend, so that the device has a chance to do notify the base
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) * station (if connected).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) * So at the end, the three cases require common handling.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) * If at the time of this call the device's firmware is not loaded,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) * nothing has to be done. Note we can be "loose" about not reading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) * i2400m->updown under i2400m->init_mutex. If it happens to change
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) * inmediately, other parts of the call flow will fail and effectively
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) * catch it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) * If the firmware is loaded, we need to:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) * - tell the device to go into host interface power save mode, wait
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) * for it to ack
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) * This is quite more interesting than it is; we need to execute a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) * command, but this time, we don't want the code in usb-{tx,rx}.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) * to call the usb_autopm_get/put_interface() barriers as it'd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) * deadlock, so we need to decrement i2400mu->do_autopm, that acts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) * as a poor man's semaphore. Ugly, but it works.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) * As well, the device might refuse going to sleep for whichever
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) * reason. In this case we just fail. For system suspend/hibernate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) * we *can't* fail. We check PMSG_IS_AUTO to see if the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) * suspend call comes from the USB stack or from the system and act
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) * in consequence.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) * - stop the notification endpoint polling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) int i2400mu_suspend(struct usb_interface *iface, pm_message_t pm_msg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) int result = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) struct device *dev = &iface->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) struct i2400mu *i2400mu = usb_get_intfdata(iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) unsigned is_autosuspend = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) struct i2400m *i2400m = &i2400mu->i2400m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) if (PMSG_IS_AUTO(pm_msg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) is_autosuspend = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) d_fnstart(3, dev, "(iface %p pm_msg %u)\n", iface, pm_msg.event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) rmb(); /* see i2400m->updown's documentation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) if (i2400m->updown == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) goto no_firmware;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) if (i2400m->state == I2400M_SS_DATA_PATH_CONNECTED && is_autosuspend) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) /* ugh -- the device is connected and this suspend
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) * request is an autosuspend one (not a system standby
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) * / hibernate).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) * The only way the device can go to standby is if the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) * link with the base station is in IDLE mode; that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) * were the case, we'd be in status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) * I2400M_SS_CONNECTED_IDLE. But we are not.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) * If we *tell* him to go power save now, it'll reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) * as a precautionary measure, so if this is an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) * autosuspend thing, say no and it'll come back
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) * later, when the link is IDLE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) result = -EBADF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) d_printf(1, dev, "fw up, link up, not-idle, autosuspend: "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) "not entering powersave\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) goto error_not_now;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) d_printf(1, dev, "fw up: entering powersave\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) atomic_dec(&i2400mu->do_autopm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) result = i2400m_cmd_enter_powersave(i2400m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) atomic_inc(&i2400mu->do_autopm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) if (result < 0 && !is_autosuspend) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) /* System suspend, can't fail */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) dev_err(dev, "failed to suspend, will reset on resume\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) result = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) if (result < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) goto error_enter_powersave;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) i2400mu_notification_release(i2400mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) d_printf(1, dev, "powersave requested\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) error_enter_powersave:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) error_not_now:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) no_firmware:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) d_fnend(3, dev, "(iface %p pm_msg %u) = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) iface, pm_msg.event, result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) int i2400mu_resume(struct usb_interface *iface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) struct device *dev = &iface->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) struct i2400mu *i2400mu = usb_get_intfdata(iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) struct i2400m *i2400m = &i2400mu->i2400m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) d_fnstart(3, dev, "(iface %p)\n", iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) rmb(); /* see i2400m->updown's documentation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) if (i2400m->updown == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) d_printf(1, dev, "fw was down, no resume needed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) d_printf(1, dev, "fw was up, resuming\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) i2400mu_notification_setup(i2400mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) /* USB has flow control, so we don't need to give it time to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) * come back; otherwise, we'd use something like a get-state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) * command... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) d_fnend(3, dev, "(iface %p) = %d\n", iface, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) int i2400mu_reset_resume(struct usb_interface *iface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) struct device *dev = &iface->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) struct i2400mu *i2400mu = usb_get_intfdata(iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) struct i2400m *i2400m = &i2400mu->i2400m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) d_fnstart(3, dev, "(iface %p)\n", iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) result = i2400m_dev_reset_handle(i2400m, "device reset on resume");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) d_fnend(3, dev, "(iface %p) = %d\n", iface, result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) return result < 0 ? result : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) * Another driver or user space is triggering a reset on the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) * which contains the interface passed as an argument. Cease IO and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) * save any device state you need to restore.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) * If you need to allocate memory here, use GFP_NOIO or GFP_ATOMIC, if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) * you are in atomic context.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) int i2400mu_pre_reset(struct usb_interface *iface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) struct i2400mu *i2400mu = usb_get_intfdata(iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) return i2400m_pre_reset(&i2400mu->i2400m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) * The reset has completed. Restore any saved device state and begin
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) * using the device again.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) * If you need to allocate memory here, use GFP_NOIO or GFP_ATOMIC, if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) * you are in atomic context.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) int i2400mu_post_reset(struct usb_interface *iface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) struct i2400mu *i2400mu = usb_get_intfdata(iface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) return i2400m_post_reset(&i2400mu->i2400m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) struct usb_device_id i2400mu_id_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) { USB_DEVICE(0x8086, USB_DEVICE_ID_I6050) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) { USB_DEVICE(0x8086, USB_DEVICE_ID_I6050_2) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) { USB_DEVICE(0x8087, USB_DEVICE_ID_I6150) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) { USB_DEVICE(0x8087, USB_DEVICE_ID_I6150_2) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) { USB_DEVICE(0x8087, USB_DEVICE_ID_I6150_3) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) { USB_DEVICE(0x8086, USB_DEVICE_ID_I6250) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) { USB_DEVICE(0x8086, 0x0181) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) { USB_DEVICE(0x8086, 0x1403) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) { USB_DEVICE(0x8086, 0x1405) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) { USB_DEVICE(0x8086, 0x0180) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) { USB_DEVICE(0x8086, 0x0182) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) { USB_DEVICE(0x8086, 0x1406) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) { USB_DEVICE(0x8086, 0x1403) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) MODULE_DEVICE_TABLE(usb, i2400mu_id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) struct usb_driver i2400mu_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) .name = KBUILD_MODNAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) .suspend = i2400mu_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) .resume = i2400mu_resume,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) .reset_resume = i2400mu_reset_resume,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) .probe = i2400mu_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) .disconnect = i2400mu_disconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) .pre_reset = i2400mu_pre_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) .post_reset = i2400mu_post_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) .id_table = i2400mu_id_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) .supports_autosuspend = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) int __init i2400mu_driver_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) d_parse_params(D_LEVEL, D_LEVEL_SIZE, i2400mu_debug_params,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) "i2400m_usb.debug");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) return usb_register(&i2400mu_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) module_init(i2400mu_driver_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) void __exit i2400mu_driver_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) usb_deregister(&i2400mu_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) module_exit(i2400mu_driver_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) MODULE_AUTHOR("Intel Corporation <linux-wimax@intel.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) MODULE_DESCRIPTION("Driver for USB based Intel Wireless WiMAX Connection 2400M "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) "(5x50 & 6050)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) MODULE_FIRMWARE(I2400MU_FW_FILE_NAME_v1_5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) MODULE_FIRMWARE(I6050U_FW_FILE_NAME_v1_5);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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