Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2003-2008 Takahiro Hirofuchi |
| 3 | * |
| 4 | * This is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| 17 | * USA. |
| 18 | */ |
| 19 | |
matt mooney | 7aaacb4 | 2011-05-11 22:33:43 -0700 | [diff] [blame] | 20 | #include <linux/init.h> |
Bernard Blackham | 3d0a2a2 | 2012-10-22 06:45:00 +1100 | [diff] [blame] | 21 | #include <linux/file.h> |
matt mooney | 7aaacb4 | 2011-05-11 22:33:43 -0700 | [diff] [blame] | 22 | #include <linux/kernel.h> |
Arnd Bergmann | 9720b4b | 2011-03-02 00:13:05 +0100 | [diff] [blame] | 23 | #include <linux/kthread.h> |
matt mooney | 7aaacb4 | 2011-05-11 22:33:43 -0700 | [diff] [blame] | 24 | #include <linux/module.h> |
| 25 | #include <linux/platform_device.h> |
| 26 | #include <linux/slab.h> |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 27 | |
| 28 | #include "usbip_common.h" |
| 29 | #include "vhci.h" |
| 30 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 31 | #define DRIVER_AUTHOR "Takahiro Hirofuchi" |
matt mooney | 64e6242 | 2011-05-11 22:33:44 -0700 | [diff] [blame] | 32 | #define DRIVER_DESC "USB/IP 'Virtual' Host Controller (VHCI) Driver" |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 33 | |
| 34 | /* |
| 35 | * TODO |
| 36 | * - update root hub emulation |
| 37 | * - move the emulation code to userland ? |
| 38 | * porting to other operating systems |
| 39 | * minimize kernel code |
| 40 | * - add suspend/resume code |
| 41 | * - clean up everything |
| 42 | */ |
| 43 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 44 | /* See usb gadget dummy hcd */ |
| 45 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 46 | static int vhci_hub_status(struct usb_hcd *hcd, char *buff); |
| 47 | static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 48 | u16 wIndex, char *buff, u16 wLength); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 49 | static int vhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 50 | gfp_t mem_flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 51 | static int vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status); |
| 52 | static int vhci_start(struct usb_hcd *vhci_hcd); |
| 53 | static void vhci_stop(struct usb_hcd *hcd); |
| 54 | static int vhci_get_frame_number(struct usb_hcd *hcd); |
| 55 | |
| 56 | static const char driver_name[] = "vhci_hcd"; |
Robert P. J. Day | f5e08ca7 | 2009-11-13 15:13:43 -0500 | [diff] [blame] | 57 | static const char driver_desc[] = "USB/IP Virtual Host Controller"; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 58 | |
| 59 | struct vhci_hcd *the_controller; |
| 60 | |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 61 | static const char * const bit_desc[] = { |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 62 | "CONNECTION", /*0*/ |
| 63 | "ENABLE", /*1*/ |
| 64 | "SUSPEND", /*2*/ |
| 65 | "OVER_CURRENT", /*3*/ |
| 66 | "RESET", /*4*/ |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 67 | "R5", /*5*/ |
| 68 | "R6", /*6*/ |
| 69 | "R7", /*7*/ |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 70 | "POWER", /*8*/ |
| 71 | "LOWSPEED", /*9*/ |
| 72 | "HIGHSPEED", /*10*/ |
| 73 | "PORT_TEST", /*11*/ |
| 74 | "INDICATOR", /*12*/ |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 75 | "R13", /*13*/ |
| 76 | "R14", /*14*/ |
| 77 | "R15", /*15*/ |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 78 | "C_CONNECTION", /*16*/ |
| 79 | "C_ENABLE", /*17*/ |
| 80 | "C_SUSPEND", /*18*/ |
| 81 | "C_OVER_CURRENT", /*19*/ |
| 82 | "C_RESET", /*20*/ |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 83 | "R21", /*21*/ |
| 84 | "R22", /*22*/ |
| 85 | "R23", /*23*/ |
| 86 | "R24", /*24*/ |
| 87 | "R25", /*25*/ |
| 88 | "R26", /*26*/ |
| 89 | "R27", /*27*/ |
| 90 | "R28", /*28*/ |
| 91 | "R29", /*29*/ |
| 92 | "R30", /*30*/ |
| 93 | "R31", /*31*/ |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 94 | }; |
| 95 | |
Márton Németh | 4a3ca2b | 2011-06-14 08:28:26 +0200 | [diff] [blame] | 96 | static void dump_port_status_diff(u32 prev_status, u32 new_status) |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 97 | { |
| 98 | int i = 0; |
Márton Németh | 4a3ca2b | 2011-06-14 08:28:26 +0200 | [diff] [blame] | 99 | u32 bit = 1; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 100 | |
Márton Németh | 4a3ca2b | 2011-06-14 08:28:26 +0200 | [diff] [blame] | 101 | pr_debug("status prev -> new: %08x -> %08x\n", prev_status, new_status); |
| 102 | while (bit) { |
| 103 | u32 prev = prev_status & bit; |
| 104 | u32 new = new_status & bit; |
| 105 | char change; |
| 106 | |
| 107 | if (!prev && new) |
| 108 | change = '+'; |
| 109 | else if (prev && !new) |
| 110 | change = '-'; |
| 111 | else |
| 112 | change = ' '; |
| 113 | |
| 114 | if (prev || new) |
| 115 | pr_debug(" %c%s\n", change, bit_desc[i]); |
| 116 | bit <<= 1; |
| 117 | i++; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 118 | } |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 119 | pr_debug("\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 120 | } |
| 121 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 122 | void rh_port_connect(int rhport, enum usb_device_speed speed) |
| 123 | { |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 124 | unsigned long flags; |
| 125 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 126 | usbip_dbg_vhci_rh("rh_port_connect %d\n", rhport); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 127 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 128 | spin_lock_irqsave(&the_controller->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 129 | |
| 130 | the_controller->port_status[rhport] |= USB_PORT_STAT_CONNECTION |
| 131 | | (1 << USB_PORT_FEAT_C_CONNECTION); |
| 132 | |
| 133 | switch (speed) { |
| 134 | case USB_SPEED_HIGH: |
| 135 | the_controller->port_status[rhport] |= USB_PORT_STAT_HIGH_SPEED; |
| 136 | break; |
| 137 | case USB_SPEED_LOW: |
| 138 | the_controller->port_status[rhport] |= USB_PORT_STAT_LOW_SPEED; |
| 139 | break; |
| 140 | default: |
| 141 | break; |
| 142 | } |
| 143 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 144 | spin_unlock_irqrestore(&the_controller->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 145 | |
| 146 | usb_hcd_poll_rh_status(vhci_to_hcd(the_controller)); |
| 147 | } |
| 148 | |
Bart Westgeest | 20960fa | 2012-10-10 13:34:26 -0400 | [diff] [blame] | 149 | static void rh_port_disconnect(int rhport) |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 150 | { |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 151 | unsigned long flags; |
| 152 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 153 | usbip_dbg_vhci_rh("rh_port_disconnect %d\n", rhport); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 154 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 155 | spin_lock_irqsave(&the_controller->lock, flags); |
Bart Westgeest | c7f0089 | 2012-10-10 13:34:27 -0400 | [diff] [blame] | 156 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 157 | the_controller->port_status[rhport] &= ~USB_PORT_STAT_CONNECTION; |
| 158 | the_controller->port_status[rhport] |= |
| 159 | (1 << USB_PORT_FEAT_C_CONNECTION); |
| 160 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 161 | spin_unlock_irqrestore(&the_controller->lock, flags); |
Max Vozeler | 0c9a32f | 2010-09-21 17:31:40 +0200 | [diff] [blame] | 162 | usb_hcd_poll_rh_status(vhci_to_hcd(the_controller)); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 163 | } |
| 164 | |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 165 | #define PORT_C_MASK \ |
| 166 | ((USB_PORT_STAT_C_CONNECTION \ |
| 167 | | USB_PORT_STAT_C_ENABLE \ |
| 168 | | USB_PORT_STAT_C_SUSPEND \ |
| 169 | | USB_PORT_STAT_C_OVERCURRENT \ |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 170 | | USB_PORT_STAT_C_RESET) << 16) |
| 171 | |
| 172 | /* |
Bart Westgeest | 7489301 | 2012-06-13 15:37:18 -0400 | [diff] [blame] | 173 | * Returns 0 if the status hasn't changed, or the number of bytes in buf. |
| 174 | * Ports are 0-indexed from the HCD point of view, |
| 175 | * and 1-indexed from the USB core pointer of view. |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 176 | * |
| 177 | * @buf: a bitmap to show which port status has been changed. |
Bart Westgeest | 7489301 | 2012-06-13 15:37:18 -0400 | [diff] [blame] | 178 | * bit 0: reserved |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 179 | * bit 1: the status of port 0 has been changed. |
| 180 | * bit 2: the status of port 1 has been changed. |
| 181 | * ... |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 182 | */ |
| 183 | static int vhci_hub_status(struct usb_hcd *hcd, char *buf) |
| 184 | { |
| 185 | struct vhci_hcd *vhci; |
Bart Westgeest | 7489301 | 2012-06-13 15:37:18 -0400 | [diff] [blame] | 186 | int retval; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 187 | int rhport; |
| 188 | int changed = 0; |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 189 | unsigned long flags; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 190 | |
Bart Westgeest | 7489301 | 2012-06-13 15:37:18 -0400 | [diff] [blame] | 191 | retval = DIV_ROUND_UP(VHCI_NPORTS + 1, 8); |
| 192 | memset(buf, 0, retval); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 193 | |
| 194 | vhci = hcd_to_vhci(hcd); |
| 195 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 196 | spin_lock_irqsave(&vhci->lock, flags); |
Alan Stern | 541c7d4 | 2010-06-22 16:39:10 -0400 | [diff] [blame] | 197 | if (!HCD_HW_ACCESSIBLE(hcd)) { |
Bart Westgeest | 7489301 | 2012-06-13 15:37:18 -0400 | [diff] [blame] | 198 | usbip_dbg_vhci_rh("hw accessible flag not on?\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 199 | goto done; |
| 200 | } |
| 201 | |
| 202 | /* check pseudo status register for each port */ |
| 203 | for (rhport = 0; rhport < VHCI_NPORTS; rhport++) { |
| 204 | if ((vhci->port_status[rhport] & PORT_C_MASK)) { |
| 205 | /* The status of a port has been changed, */ |
Bart Westgeest | 7489301 | 2012-06-13 15:37:18 -0400 | [diff] [blame] | 206 | usbip_dbg_vhci_rh("port %d status changed\n", rhport); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 207 | |
Bart Westgeest | 7489301 | 2012-06-13 15:37:18 -0400 | [diff] [blame] | 208 | buf[(rhport + 1) / 8] |= 1 << (rhport + 1) % 8; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 209 | changed = 1; |
| 210 | } |
| 211 | } |
| 212 | |
navin patidar | 107f04b | 2012-09-06 16:49:50 +0530 | [diff] [blame] | 213 | if ((hcd->state == HC_STATE_SUSPENDED) && (changed == 1)) |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 214 | usb_hcd_resume_root_hub(hcd); |
| 215 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 216 | done: |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 217 | spin_unlock_irqrestore(&vhci->lock, flags); |
Bart Westgeest | 7489301 | 2012-06-13 15:37:18 -0400 | [diff] [blame] | 218 | return changed ? retval : 0; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 219 | } |
| 220 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 221 | static inline void hub_descriptor(struct usb_hub_descriptor *desc) |
| 222 | { |
| 223 | memset(desc, 0, sizeof(*desc)); |
Sergei Shtylyov | 8f413d8 | 2015-03-29 01:45:02 +0300 | [diff] [blame] | 224 | desc->bDescriptorType = USB_DT_HUB; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 225 | desc->bDescLength = 9; |
Vaishali Thakkar | 0c59633 | 2015-08-19 10:47:46 +0530 | [diff] [blame] | 226 | desc->wHubCharacteristics = cpu_to_le16( |
Sergei Shtylyov | 1cc9af8 | 2015-01-19 02:00:56 +0300 | [diff] [blame] | 227 | HUB_CHAR_INDV_PORT_LPSM | HUB_CHAR_COMMON_OCPM); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 228 | desc->bNbrPorts = VHCI_NPORTS; |
John Youn | dbe79bb | 2001-09-17 00:00:00 -0700 | [diff] [blame] | 229 | desc->u.hs.DeviceRemovable[0] = 0xff; |
| 230 | desc->u.hs.DeviceRemovable[1] = 0xff; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 231 | } |
| 232 | |
| 233 | static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, |
| 234 | u16 wIndex, char *buf, u16 wLength) |
| 235 | { |
| 236 | struct vhci_hcd *dum; |
| 237 | int retval = 0; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 238 | int rhport; |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 239 | unsigned long flags; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 240 | |
| 241 | u32 prev_port_status[VHCI_NPORTS]; |
| 242 | |
Alan Stern | 541c7d4 | 2010-06-22 16:39:10 -0400 | [diff] [blame] | 243 | if (!HCD_HW_ACCESSIBLE(hcd)) |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 244 | return -ETIMEDOUT; |
| 245 | |
| 246 | /* |
| 247 | * NOTE: |
| 248 | * wIndex shows the port number and begins from 1. |
| 249 | */ |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 250 | usbip_dbg_vhci_rh("typeReq %x wValue %x wIndex %x\n", typeReq, wValue, |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 251 | wIndex); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 252 | if (wIndex > VHCI_NPORTS) |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 253 | pr_err("invalid port number %d\n", wIndex); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 254 | rhport = ((__u8)(wIndex & 0x00ff)) - 1; |
| 255 | |
| 256 | dum = hcd_to_vhci(hcd); |
| 257 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 258 | spin_lock_irqsave(&dum->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 259 | |
| 260 | /* store old status and compare now and old later */ |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 261 | if (usbip_dbg_flag_vhci_rh) { |
Márton Németh | 6f480bf | 2011-06-13 23:30:09 +0200 | [diff] [blame] | 262 | memcpy(prev_port_status, dum->port_status, |
| 263 | sizeof(prev_port_status)); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 264 | } |
| 265 | |
| 266 | switch (typeReq) { |
| 267 | case ClearHubFeature: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 268 | usbip_dbg_vhci_rh(" ClearHubFeature\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 269 | break; |
| 270 | case ClearPortFeature: |
| 271 | switch (wValue) { |
| 272 | case USB_PORT_FEAT_SUSPEND: |
| 273 | if (dum->port_status[rhport] & USB_PORT_STAT_SUSPEND) { |
| 274 | /* 20msec signaling */ |
| 275 | dum->resuming = 1; |
| 276 | dum->re_timeout = |
| 277 | jiffies + msecs_to_jiffies(20); |
| 278 | } |
| 279 | break; |
| 280 | case USB_PORT_FEAT_POWER: |
Cédric Cabessa | 7923a65 | 2014-03-19 23:04:57 +0100 | [diff] [blame] | 281 | usbip_dbg_vhci_rh( |
| 282 | " ClearPortFeature: USB_PORT_FEAT_POWER\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 283 | dum->port_status[rhport] = 0; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 284 | dum->resuming = 0; |
| 285 | break; |
| 286 | case USB_PORT_FEAT_C_RESET: |
Cédric Cabessa | 7923a65 | 2014-03-19 23:04:57 +0100 | [diff] [blame] | 287 | usbip_dbg_vhci_rh( |
| 288 | " ClearPortFeature: USB_PORT_FEAT_C_RESET\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 289 | switch (dum->vdev[rhport].speed) { |
| 290 | case USB_SPEED_HIGH: |
| 291 | dum->port_status[rhport] |= |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 292 | USB_PORT_STAT_HIGH_SPEED; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 293 | break; |
| 294 | case USB_SPEED_LOW: |
| 295 | dum->port_status[rhport] |= |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 296 | USB_PORT_STAT_LOW_SPEED; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 297 | break; |
| 298 | default: |
| 299 | break; |
| 300 | } |
| 301 | default: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 302 | usbip_dbg_vhci_rh(" ClearPortFeature: default %x\n", |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 303 | wValue); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 304 | dum->port_status[rhport] &= ~(1 << wValue); |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 305 | break; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 306 | } |
| 307 | break; |
| 308 | case GetHubDescriptor: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 309 | usbip_dbg_vhci_rh(" GetHubDescriptor\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 310 | hub_descriptor((struct usb_hub_descriptor *) buf); |
| 311 | break; |
| 312 | case GetHubStatus: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 313 | usbip_dbg_vhci_rh(" GetHubStatus\n"); |
Alexey Tulia | a06a24d | 2014-06-13 11:35:13 +0300 | [diff] [blame] | 314 | *(__le32 *) buf = cpu_to_le32(0); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 315 | break; |
| 316 | case GetPortStatus: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 317 | usbip_dbg_vhci_rh(" GetPortStatus port %x\n", wIndex); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 318 | if (wIndex > VHCI_NPORTS || wIndex < 1) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 319 | pr_err("invalid port number %d\n", wIndex); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 320 | retval = -EPIPE; |
| 321 | } |
| 322 | |
Bart Westgeest | c7f0089 | 2012-10-10 13:34:27 -0400 | [diff] [blame] | 323 | /* we do not care about resume. */ |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 324 | |
| 325 | /* whoever resets or resumes must GetPortStatus to |
| 326 | * complete it!! |
Bart Westgeest | c7f0089 | 2012-10-10 13:34:27 -0400 | [diff] [blame] | 327 | */ |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 328 | if (dum->resuming && time_after(jiffies, dum->re_timeout)) { |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 329 | dum->port_status[rhport] |= |
matt mooney | 8735276 | 2011-05-19 21:36:56 -0700 | [diff] [blame] | 330 | (1 << USB_PORT_FEAT_C_SUSPEND); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 331 | dum->port_status[rhport] &= |
matt mooney | 8735276 | 2011-05-19 21:36:56 -0700 | [diff] [blame] | 332 | ~(1 << USB_PORT_FEAT_SUSPEND); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 333 | dum->resuming = 0; |
| 334 | dum->re_timeout = 0; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 335 | } |
| 336 | |
| 337 | if ((dum->port_status[rhport] & (1 << USB_PORT_FEAT_RESET)) != |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 338 | 0 && time_after(jiffies, dum->re_timeout)) { |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 339 | dum->port_status[rhport] |= |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 340 | (1 << USB_PORT_FEAT_C_RESET); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 341 | dum->port_status[rhport] &= |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 342 | ~(1 << USB_PORT_FEAT_RESET); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 343 | dum->re_timeout = 0; |
| 344 | |
| 345 | if (dum->vdev[rhport].ud.status == |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 346 | VDEV_ST_NOTASSIGNED) { |
Cédric Cabessa | 7923a65 | 2014-03-19 23:04:57 +0100 | [diff] [blame] | 347 | usbip_dbg_vhci_rh( |
| 348 | " enable rhport %d (status %u)\n", |
| 349 | rhport, |
| 350 | dum->vdev[rhport].ud.status); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 351 | dum->port_status[rhport] |= |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 352 | USB_PORT_STAT_ENABLE; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 353 | } |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 354 | } |
Teodora Baluta | d0306a5 | 2013-11-04 13:12:12 +0200 | [diff] [blame] | 355 | ((__le16 *) buf)[0] = cpu_to_le16(dum->port_status[rhport]); |
Cédric Cabessa | 7923a65 | 2014-03-19 23:04:57 +0100 | [diff] [blame] | 356 | ((__le16 *) buf)[1] = |
| 357 | cpu_to_le16(dum->port_status[rhport] >> 16); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 358 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 359 | usbip_dbg_vhci_rh(" GetPortStatus bye %x %x\n", ((u16 *)buf)[0], |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 360 | ((u16 *)buf)[1]); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 361 | break; |
| 362 | case SetHubFeature: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 363 | usbip_dbg_vhci_rh(" SetHubFeature\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 364 | retval = -EPIPE; |
| 365 | break; |
| 366 | case SetPortFeature: |
| 367 | switch (wValue) { |
| 368 | case USB_PORT_FEAT_SUSPEND: |
Cédric Cabessa | 7923a65 | 2014-03-19 23:04:57 +0100 | [diff] [blame] | 369 | usbip_dbg_vhci_rh( |
| 370 | " SetPortFeature: USB_PORT_FEAT_SUSPEND\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 371 | break; |
| 372 | case USB_PORT_FEAT_RESET: |
Cédric Cabessa | 7923a65 | 2014-03-19 23:04:57 +0100 | [diff] [blame] | 373 | usbip_dbg_vhci_rh( |
| 374 | " SetPortFeature: USB_PORT_FEAT_RESET\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 375 | /* if it's already running, disconnect first */ |
| 376 | if (dum->port_status[rhport] & USB_PORT_STAT_ENABLE) { |
| 377 | dum->port_status[rhport] &= |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 378 | ~(USB_PORT_STAT_ENABLE | |
| 379 | USB_PORT_STAT_LOW_SPEED | |
| 380 | USB_PORT_STAT_HIGH_SPEED); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 381 | /* FIXME test that code path! */ |
| 382 | } |
| 383 | /* 50msec reset signaling */ |
| 384 | dum->re_timeout = jiffies + msecs_to_jiffies(50); |
| 385 | |
| 386 | /* FALLTHROUGH */ |
| 387 | default: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 388 | usbip_dbg_vhci_rh(" SetPortFeature: default %d\n", |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 389 | wValue); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 390 | dum->port_status[rhport] |= (1 << wValue); |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 391 | break; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 392 | } |
| 393 | break; |
| 394 | |
| 395 | default: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 396 | pr_err("default: no such request\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 397 | |
| 398 | /* "protocol stall" on error */ |
| 399 | retval = -EPIPE; |
| 400 | } |
| 401 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 402 | if (usbip_dbg_flag_vhci_rh) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 403 | pr_debug("port %d\n", rhport); |
Márton Németh | bfb4ce2 | 2011-06-13 23:47:39 +0200 | [diff] [blame] | 404 | /* Only dump valid port status */ |
| 405 | if (rhport >= 0) { |
Márton Németh | 4a3ca2b | 2011-06-14 08:28:26 +0200 | [diff] [blame] | 406 | dump_port_status_diff(prev_port_status[rhport], |
| 407 | dum->port_status[rhport]); |
Márton Németh | bfb4ce2 | 2011-06-13 23:47:39 +0200 | [diff] [blame] | 408 | } |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 409 | } |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 410 | usbip_dbg_vhci_rh(" bye\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 411 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 412 | spin_unlock_irqrestore(&dum->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 413 | |
| 414 | return retval; |
| 415 | } |
| 416 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 417 | static struct vhci_device *get_vdev(struct usb_device *udev) |
| 418 | { |
| 419 | int i; |
| 420 | |
| 421 | if (!udev) |
| 422 | return NULL; |
| 423 | |
| 424 | for (i = 0; i < VHCI_NPORTS; i++) |
| 425 | if (the_controller->vdev[i].udev == udev) |
| 426 | return port_to_vdev(i); |
| 427 | |
| 428 | return NULL; |
| 429 | } |
| 430 | |
| 431 | static void vhci_tx_urb(struct urb *urb) |
| 432 | { |
| 433 | struct vhci_device *vdev = get_vdev(urb->dev); |
| 434 | struct vhci_priv *priv; |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 435 | unsigned long flags; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 436 | |
| 437 | if (!vdev) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 438 | pr_err("could not get virtual device"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 439 | return; |
| 440 | } |
| 441 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 442 | priv = kzalloc(sizeof(struct vhci_priv), GFP_ATOMIC); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 443 | if (!priv) { |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 444 | usbip_event_add(&vdev->ud, VDEV_EVENT_ERROR_MALLOC); |
| 445 | return; |
| 446 | } |
| 447 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 448 | spin_lock_irqsave(&vdev->priv_lock, flags); |
Joe Perches | 78110bb | 2013-02-11 09:41:29 -0800 | [diff] [blame] | 449 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 450 | priv->seqnum = atomic_inc_return(&the_controller->seqnum); |
| 451 | if (priv->seqnum == 0xffff) |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 452 | dev_info(&urb->dev->dev, "seqnum max\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 453 | |
| 454 | priv->vdev = vdev; |
| 455 | priv->urb = urb; |
| 456 | |
| 457 | urb->hcpriv = (void *) priv; |
| 458 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 459 | list_add_tail(&priv->list, &vdev->priv_tx); |
| 460 | |
| 461 | wake_up(&vdev->waitq_tx); |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 462 | spin_unlock_irqrestore(&vdev->priv_lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 463 | } |
| 464 | |
| 465 | static int vhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, |
| 466 | gfp_t mem_flags) |
| 467 | { |
| 468 | struct device *dev = &urb->dev->dev; |
| 469 | int ret = 0; |
Max Vozeler | 6d21215 | 2011-01-12 15:02:02 +0200 | [diff] [blame] | 470 | struct vhci_device *vdev; |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 471 | unsigned long flags; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 472 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 473 | usbip_dbg_vhci_hc("enter, usb_hcd %p urb %p mem_flags %d\n", |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 474 | hcd, urb, mem_flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 475 | |
| 476 | /* patch to usb_sg_init() is in 2.5.60 */ |
| 477 | BUG_ON(!urb->transfer_buffer && urb->transfer_buffer_length); |
| 478 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 479 | spin_lock_irqsave(&the_controller->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 480 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 481 | if (urb->status != -EINPROGRESS) { |
| 482 | dev_err(dev, "URB already unlinked!, status %d\n", urb->status); |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 483 | spin_unlock_irqrestore(&the_controller->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 484 | return urb->status; |
| 485 | } |
| 486 | |
Max Vozeler | 01446ef | 2011-01-12 15:02:05 +0200 | [diff] [blame] | 487 | vdev = port_to_vdev(urb->dev->portnum-1); |
Max Vozeler | 6d21215 | 2011-01-12 15:02:02 +0200 | [diff] [blame] | 488 | |
| 489 | /* refuse enqueue for dead connection */ |
| 490 | spin_lock(&vdev->ud.lock); |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 491 | if (vdev->ud.status == VDEV_ST_NULL || |
| 492 | vdev->ud.status == VDEV_ST_ERROR) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 493 | dev_err(dev, "enqueue for inactive port %d\n", vdev->rhport); |
Max Vozeler | 6d21215 | 2011-01-12 15:02:02 +0200 | [diff] [blame] | 494 | spin_unlock(&vdev->ud.lock); |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 495 | spin_unlock_irqrestore(&the_controller->lock, flags); |
Max Vozeler | 6d21215 | 2011-01-12 15:02:02 +0200 | [diff] [blame] | 496 | return -ENODEV; |
| 497 | } |
| 498 | spin_unlock(&vdev->ud.lock); |
| 499 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 500 | ret = usb_hcd_link_urb_to_ep(hcd, urb); |
| 501 | if (ret) |
| 502 | goto no_need_unlink; |
| 503 | |
| 504 | /* |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 505 | * The enumeration process is as follows; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 506 | * |
| 507 | * 1. Get_Descriptor request to DevAddrs(0) EndPoint(0) |
| 508 | * to get max packet length of default pipe |
| 509 | * |
| 510 | * 2. Set_Address request to DevAddr(0) EndPoint(0) |
| 511 | * |
| 512 | */ |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 513 | if (usb_pipedevice(urb->pipe) == 0) { |
| 514 | __u8 type = usb_pipetype(urb->pipe); |
| 515 | struct usb_ctrlrequest *ctrlreq = |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 516 | (struct usb_ctrlrequest *) urb->setup_packet; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 517 | |
| 518 | if (type != PIPE_CONTROL || !ctrlreq) { |
| 519 | dev_err(dev, "invalid request to devnum 0\n"); |
Shan Wei | a7cd582 | 2009-07-24 16:57:35 +0800 | [diff] [blame] | 520 | ret = -EINVAL; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 521 | goto no_need_xmit; |
| 522 | } |
| 523 | |
| 524 | switch (ctrlreq->bRequest) { |
| 525 | case USB_REQ_SET_ADDRESS: |
| 526 | /* set_address may come when a device is reset */ |
| 527 | dev_info(dev, "SetAddress Request (%d) to port %d\n", |
| 528 | ctrlreq->wValue, vdev->rhport); |
| 529 | |
Markus Elfring | 03f3df8 | 2014-11-21 16:33:18 +0100 | [diff] [blame] | 530 | usb_put_dev(vdev->udev); |
Max Vozeler | 7606ee8 | 2011-01-12 15:02:00 +0200 | [diff] [blame] | 531 | vdev->udev = usb_get_dev(urb->dev); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 532 | |
| 533 | spin_lock(&vdev->ud.lock); |
| 534 | vdev->ud.status = VDEV_ST_USED; |
| 535 | spin_unlock(&vdev->ud.lock); |
| 536 | |
| 537 | if (urb->status == -EINPROGRESS) { |
| 538 | /* This request is successfully completed. */ |
| 539 | /* If not -EINPROGRESS, possibly unlinked. */ |
| 540 | urb->status = 0; |
| 541 | } |
| 542 | |
| 543 | goto no_need_xmit; |
| 544 | |
| 545 | case USB_REQ_GET_DESCRIPTOR: |
Teodora Baluta | d0306a5 | 2013-11-04 13:12:12 +0200 | [diff] [blame] | 546 | if (ctrlreq->wValue == cpu_to_le16(USB_DT_DEVICE << 8)) |
Cédric Cabessa | 7923a65 | 2014-03-19 23:04:57 +0100 | [diff] [blame] | 547 | usbip_dbg_vhci_hc( |
| 548 | "Not yet?:Get_Descriptor to device 0 (get max pipe size)\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 549 | |
Markus Elfring | 03f3df8 | 2014-11-21 16:33:18 +0100 | [diff] [blame] | 550 | usb_put_dev(vdev->udev); |
Max Vozeler | 7606ee8 | 2011-01-12 15:02:00 +0200 | [diff] [blame] | 551 | vdev->udev = usb_get_dev(urb->dev); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 552 | goto out; |
| 553 | |
| 554 | default: |
| 555 | /* NOT REACHED */ |
Cédric Cabessa | 7923a65 | 2014-03-19 23:04:57 +0100 | [diff] [blame] | 556 | dev_err(dev, |
| 557 | "invalid request to devnum 0 bRequest %u, wValue %u\n", |
| 558 | ctrlreq->bRequest, |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 559 | ctrlreq->wValue); |
| 560 | ret = -EINVAL; |
| 561 | goto no_need_xmit; |
| 562 | } |
| 563 | |
| 564 | } |
| 565 | |
| 566 | out: |
| 567 | vhci_tx_urb(urb); |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 568 | spin_unlock_irqrestore(&the_controller->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 569 | |
| 570 | return 0; |
| 571 | |
| 572 | no_need_xmit: |
| 573 | usb_hcd_unlink_urb_from_ep(hcd, urb); |
| 574 | no_need_unlink: |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 575 | spin_unlock_irqrestore(&the_controller->lock, flags); |
Igor Kotrasinski | 03b0a52 | 2015-09-21 11:30:44 +0200 | [diff] [blame] | 576 | if (!ret) |
| 577 | usb_hcd_giveback_urb(vhci_to_hcd(the_controller), |
| 578 | urb, urb->status); |
Shan Wei | a7cd582 | 2009-07-24 16:57:35 +0800 | [diff] [blame] | 579 | return ret; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 580 | } |
| 581 | |
| 582 | /* |
| 583 | * vhci_rx gives back the urb after receiving the reply of the urb. If an |
| 584 | * unlink pdu is sent or not, vhci_rx receives a normal return pdu and gives |
| 585 | * back its urb. For the driver unlinking the urb, the content of the urb is |
| 586 | * not important, but the calling to its completion handler is important; the |
| 587 | * completion of unlinking is notified by the completion handler. |
| 588 | * |
| 589 | * |
| 590 | * CLIENT SIDE |
| 591 | * |
| 592 | * - When vhci_hcd receives RET_SUBMIT, |
| 593 | * |
| 594 | * - case 1a). the urb of the pdu is not unlinking. |
| 595 | * - normal case |
| 596 | * => just give back the urb |
| 597 | * |
| 598 | * - case 1b). the urb of the pdu is unlinking. |
| 599 | * - usbip.ko will return a reply of the unlinking request. |
| 600 | * => give back the urb now and go to case 2b). |
| 601 | * |
| 602 | * - When vhci_hcd receives RET_UNLINK, |
| 603 | * |
| 604 | * - case 2a). a submit request is still pending in vhci_hcd. |
| 605 | * - urb was really pending in usbip.ko and urb_unlink_urb() was |
| 606 | * completed there. |
| 607 | * => free a pending submit request |
| 608 | * => notify unlink completeness by giving back the urb |
| 609 | * |
| 610 | * - case 2b). a submit request is *not* pending in vhci_hcd. |
| 611 | * - urb was already given back to the core driver. |
| 612 | * => do not give back the urb |
| 613 | * |
| 614 | * |
| 615 | * SERVER SIDE |
| 616 | * |
| 617 | * - When usbip receives CMD_UNLINK, |
| 618 | * |
| 619 | * - case 3a). the urb of the unlink request is now in submission. |
| 620 | * => do usb_unlink_urb(). |
| 621 | * => after the unlink is completed, send RET_UNLINK. |
| 622 | * |
| 623 | * - case 3b). the urb of the unlink request is not in submission. |
| 624 | * - may be already completed or never be received |
| 625 | * => send RET_UNLINK |
| 626 | * |
| 627 | */ |
| 628 | static int vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) |
| 629 | { |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 630 | struct vhci_priv *priv; |
| 631 | struct vhci_device *vdev; |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 632 | unsigned long flags; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 633 | |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 634 | pr_info("dequeue a urb %p\n", urb); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 635 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 636 | spin_lock_irqsave(&the_controller->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 637 | |
| 638 | priv = urb->hcpriv; |
| 639 | if (!priv) { |
| 640 | /* URB was never linked! or will be soon given back by |
| 641 | * vhci_rx. */ |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 642 | spin_unlock_irqrestore(&the_controller->lock, flags); |
Igor Kotrasinski | 635e664 | 2015-09-21 11:30:45 +0200 | [diff] [blame] | 643 | return -EIDRM; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 644 | } |
| 645 | |
| 646 | { |
| 647 | int ret = 0; |
Pawel Lebioda | 3eed8c0 | 2014-05-14 19:20:27 +0200 | [diff] [blame] | 648 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 649 | ret = usb_hcd_check_unlink_urb(hcd, urb, status); |
| 650 | if (ret) { |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 651 | spin_unlock_irqrestore(&the_controller->lock, flags); |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 652 | return ret; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 653 | } |
| 654 | } |
| 655 | |
| 656 | /* send unlink request here? */ |
| 657 | vdev = priv->vdev; |
| 658 | |
| 659 | if (!vdev->ud.tcp_socket) { |
| 660 | /* tcp connection is closed */ |
Harvey Yang | 50b66b5 | 2013-01-22 13:31:31 +0800 | [diff] [blame] | 661 | spin_lock(&vdev->priv_lock); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 662 | |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 663 | pr_info("device %p seems to be disconnected\n", vdev); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 664 | list_del(&priv->list); |
| 665 | kfree(priv); |
| 666 | urb->hcpriv = NULL; |
| 667 | |
Harvey Yang | 50b66b5 | 2013-01-22 13:31:31 +0800 | [diff] [blame] | 668 | spin_unlock(&vdev->priv_lock); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 669 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 670 | /* |
| 671 | * If tcp connection is alive, we have sent CMD_UNLINK. |
| 672 | * vhci_rx will receive RET_UNLINK and give back the URB. |
| 673 | * Otherwise, we give back it here. |
| 674 | */ |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 675 | pr_info("gives back urb %p\n", urb); |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 676 | |
| 677 | usb_hcd_unlink_urb_from_ep(hcd, urb); |
| 678 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 679 | spin_unlock_irqrestore(&the_controller->lock, flags); |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 680 | usb_hcd_giveback_urb(vhci_to_hcd(the_controller), urb, |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 681 | urb->status); |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 682 | spin_lock_irqsave(&the_controller->lock, flags); |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 683 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 684 | } else { |
| 685 | /* tcp connection is alive */ |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 686 | struct vhci_unlink *unlink; |
| 687 | |
Harvey Yang | 50b66b5 | 2013-01-22 13:31:31 +0800 | [diff] [blame] | 688 | spin_lock(&vdev->priv_lock); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 689 | |
| 690 | /* setup CMD_UNLINK pdu */ |
| 691 | unlink = kzalloc(sizeof(struct vhci_unlink), GFP_ATOMIC); |
| 692 | if (!unlink) { |
Harvey Yang | 50b66b5 | 2013-01-22 13:31:31 +0800 | [diff] [blame] | 693 | spin_unlock(&vdev->priv_lock); |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 694 | spin_unlock_irqrestore(&the_controller->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 695 | usbip_event_add(&vdev->ud, VDEV_EVENT_ERROR_MALLOC); |
| 696 | return -ENOMEM; |
| 697 | } |
| 698 | |
| 699 | unlink->seqnum = atomic_inc_return(&the_controller->seqnum); |
| 700 | if (unlink->seqnum == 0xffff) |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 701 | pr_info("seqnum max\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 702 | |
| 703 | unlink->unlink_seqnum = priv->seqnum; |
| 704 | |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 705 | pr_info("device %p seems to be still connected\n", vdev); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 706 | |
| 707 | /* send cmd_unlink and try to cancel the pending URB in the |
| 708 | * peer */ |
| 709 | list_add_tail(&unlink->list, &vdev->unlink_tx); |
| 710 | wake_up(&vdev->waitq_tx); |
| 711 | |
Harvey Yang | 50b66b5 | 2013-01-22 13:31:31 +0800 | [diff] [blame] | 712 | spin_unlock(&vdev->priv_lock); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 713 | } |
| 714 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 715 | spin_unlock_irqrestore(&the_controller->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 716 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 717 | usbip_dbg_vhci_hc("leave\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 718 | return 0; |
| 719 | } |
| 720 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 721 | static void vhci_device_unlink_cleanup(struct vhci_device *vdev) |
| 722 | { |
| 723 | struct vhci_unlink *unlink, *tmp; |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 724 | unsigned long flags; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 725 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 726 | spin_lock_irqsave(&the_controller->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 727 | spin_lock(&vdev->priv_lock); |
| 728 | |
| 729 | list_for_each_entry_safe(unlink, tmp, &vdev->unlink_tx, list) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 730 | pr_info("unlink cleanup tx %lu\n", unlink->unlink_seqnum); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 731 | list_del(&unlink->list); |
| 732 | kfree(unlink); |
| 733 | } |
| 734 | |
Bernard Blackham | 236742d | 2012-09-06 20:25:04 +1000 | [diff] [blame] | 735 | while (!list_empty(&vdev->unlink_rx)) { |
Max Vozeler | b92a5e2 | 2011-01-12 15:02:01 +0200 | [diff] [blame] | 736 | struct urb *urb; |
| 737 | |
Bernard Blackham | 236742d | 2012-09-06 20:25:04 +1000 | [diff] [blame] | 738 | unlink = list_first_entry(&vdev->unlink_rx, struct vhci_unlink, |
| 739 | list); |
| 740 | |
Max Vozeler | b92a5e2 | 2011-01-12 15:02:01 +0200 | [diff] [blame] | 741 | /* give back URB of unanswered unlink request */ |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 742 | pr_info("unlink cleanup rx %lu\n", unlink->unlink_seqnum); |
Max Vozeler | b92a5e2 | 2011-01-12 15:02:01 +0200 | [diff] [blame] | 743 | |
| 744 | urb = pickup_urb_and_free_priv(vdev, unlink->unlink_seqnum); |
| 745 | if (!urb) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 746 | pr_info("the urb (seqnum %lu) was already given back\n", |
| 747 | unlink->unlink_seqnum); |
Max Vozeler | b92a5e2 | 2011-01-12 15:02:01 +0200 | [diff] [blame] | 748 | list_del(&unlink->list); |
| 749 | kfree(unlink); |
| 750 | continue; |
| 751 | } |
| 752 | |
| 753 | urb->status = -ENODEV; |
| 754 | |
Max Vozeler | b92a5e2 | 2011-01-12 15:02:01 +0200 | [diff] [blame] | 755 | usb_hcd_unlink_urb_from_ep(vhci_to_hcd(the_controller), urb); |
Bernard Blackham | 236742d | 2012-09-06 20:25:04 +1000 | [diff] [blame] | 756 | |
| 757 | list_del(&unlink->list); |
| 758 | |
| 759 | spin_unlock(&vdev->priv_lock); |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 760 | spin_unlock_irqrestore(&the_controller->lock, flags); |
Max Vozeler | b92a5e2 | 2011-01-12 15:02:01 +0200 | [diff] [blame] | 761 | |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 762 | usb_hcd_giveback_urb(vhci_to_hcd(the_controller), urb, |
| 763 | urb->status); |
Max Vozeler | b92a5e2 | 2011-01-12 15:02:01 +0200 | [diff] [blame] | 764 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 765 | spin_lock_irqsave(&the_controller->lock, flags); |
Bernard Blackham | 236742d | 2012-09-06 20:25:04 +1000 | [diff] [blame] | 766 | spin_lock(&vdev->priv_lock); |
| 767 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 768 | kfree(unlink); |
| 769 | } |
| 770 | |
| 771 | spin_unlock(&vdev->priv_lock); |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 772 | spin_unlock_irqrestore(&the_controller->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 773 | } |
| 774 | |
| 775 | /* |
| 776 | * The important thing is that only one context begins cleanup. |
| 777 | * This is why error handling and cleanup become simple. |
| 778 | * We do not want to consider race condition as possible. |
| 779 | */ |
| 780 | static void vhci_shutdown_connection(struct usbip_device *ud) |
| 781 | { |
| 782 | struct vhci_device *vdev = container_of(ud, struct vhci_device, ud); |
| 783 | |
| 784 | /* need this? see stub_dev.c */ |
| 785 | if (ud->tcp_socket) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 786 | pr_debug("shutdown tcp_socket %p\n", ud->tcp_socket); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 787 | kernel_sock_shutdown(ud->tcp_socket, SHUT_RDWR); |
| 788 | } |
| 789 | |
Bart Westgeest | c7f0089 | 2012-10-10 13:34:27 -0400 | [diff] [blame] | 790 | /* kill threads related to this sdev */ |
navin | cbf7d12 | 2012-09-19 17:04:51 +0530 | [diff] [blame] | 791 | if (vdev->ud.tcp_rx) { |
Oleg Nesterov | ba46ce3 | 2012-03-13 19:07:18 +0100 | [diff] [blame] | 792 | kthread_stop_put(vdev->ud.tcp_rx); |
navin | cbf7d12 | 2012-09-19 17:04:51 +0530 | [diff] [blame] | 793 | vdev->ud.tcp_rx = NULL; |
| 794 | } |
| 795 | if (vdev->ud.tcp_tx) { |
Oleg Nesterov | ba46ce3 | 2012-03-13 19:07:18 +0100 | [diff] [blame] | 796 | kthread_stop_put(vdev->ud.tcp_tx); |
navin | cbf7d12 | 2012-09-19 17:04:51 +0530 | [diff] [blame] | 797 | vdev->ud.tcp_tx = NULL; |
| 798 | } |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 799 | pr_info("stop threads\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 800 | |
| 801 | /* active connection is closed */ |
Bernard Blackham | 3d0a2a2 | 2012-10-22 06:45:00 +1100 | [diff] [blame] | 802 | if (vdev->ud.tcp_socket) { |
Al Viro | 964ea96 | 2014-03-05 20:33:08 -0500 | [diff] [blame] | 803 | sockfd_put(vdev->ud.tcp_socket); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 804 | vdev->ud.tcp_socket = NULL; |
| 805 | } |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 806 | pr_info("release socket\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 807 | |
| 808 | vhci_device_unlink_cleanup(vdev); |
| 809 | |
| 810 | /* |
| 811 | * rh_port_disconnect() is a trigger of ... |
| 812 | * usb_disable_device(): |
| 813 | * disable all the endpoints for a USB device. |
| 814 | * usb_disable_endpoint(): |
| 815 | * disable endpoints. pending urbs are unlinked(dequeued). |
| 816 | * |
| 817 | * NOTE: After calling rh_port_disconnect(), the USB device drivers of a |
Justin P. Mattock | 4ec2601 | 2012-08-06 08:00:27 -0700 | [diff] [blame] | 818 | * detached device should release used urbs in a cleanup function (i.e. |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 819 | * xxx_disconnect()). Therefore, vhci_hcd does not need to release |
| 820 | * pushed urbs and their private data in this function. |
| 821 | * |
Justin P. Mattock | 4ec2601 | 2012-08-06 08:00:27 -0700 | [diff] [blame] | 822 | * NOTE: vhci_dequeue() must be considered carefully. When shutting down |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 823 | * a connection, vhci_shutdown_connection() expects vhci_dequeue() |
| 824 | * gives back pushed urbs and frees their private data by request of |
| 825 | * the cleanup function of a USB driver. When unlinking a urb with an |
| 826 | * active connection, vhci_dequeue() does not give back the urb which |
| 827 | * is actually given back by vhci_rx after receiving its return pdu. |
| 828 | * |
| 829 | */ |
| 830 | rh_port_disconnect(vdev->rhport); |
| 831 | |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 832 | pr_info("disconnect device\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 833 | } |
| 834 | |
| 835 | |
| 836 | static void vhci_device_reset(struct usbip_device *ud) |
| 837 | { |
| 838 | struct vhci_device *vdev = container_of(ud, struct vhci_device, ud); |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 839 | unsigned long flags; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 840 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 841 | spin_lock_irqsave(&ud->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 842 | |
| 843 | vdev->speed = 0; |
| 844 | vdev->devid = 0; |
| 845 | |
Markus Elfring | 03f3df8 | 2014-11-21 16:33:18 +0100 | [diff] [blame] | 846 | usb_put_dev(vdev->udev); |
Max Vozeler | 7606ee8 | 2011-01-12 15:02:00 +0200 | [diff] [blame] | 847 | vdev->udev = NULL; |
| 848 | |
Bernard Blackham | 3d0a2a2 | 2012-10-22 06:45:00 +1100 | [diff] [blame] | 849 | if (ud->tcp_socket) { |
Al Viro | 964ea96 | 2014-03-05 20:33:08 -0500 | [diff] [blame] | 850 | sockfd_put(ud->tcp_socket); |
Bernard Blackham | 3d0a2a2 | 2012-10-22 06:45:00 +1100 | [diff] [blame] | 851 | ud->tcp_socket = NULL; |
| 852 | } |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 853 | ud->status = VDEV_ST_NULL; |
| 854 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 855 | spin_unlock_irqrestore(&ud->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 856 | } |
| 857 | |
| 858 | static void vhci_device_unusable(struct usbip_device *ud) |
| 859 | { |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 860 | unsigned long flags; |
| 861 | |
| 862 | spin_lock_irqsave(&ud->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 863 | ud->status = VDEV_ST_ERROR; |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 864 | spin_unlock_irqrestore(&ud->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 865 | } |
| 866 | |
| 867 | static void vhci_device_init(struct vhci_device *vdev) |
| 868 | { |
| 869 | memset(vdev, 0, sizeof(*vdev)); |
| 870 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 871 | vdev->ud.side = USBIP_VHCI; |
| 872 | vdev->ud.status = VDEV_ST_NULL; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 873 | spin_lock_init(&vdev->ud.lock); |
| 874 | |
| 875 | INIT_LIST_HEAD(&vdev->priv_rx); |
| 876 | INIT_LIST_HEAD(&vdev->priv_tx); |
| 877 | INIT_LIST_HEAD(&vdev->unlink_tx); |
| 878 | INIT_LIST_HEAD(&vdev->unlink_rx); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 879 | spin_lock_init(&vdev->priv_lock); |
| 880 | |
| 881 | init_waitqueue_head(&vdev->waitq_tx); |
| 882 | |
| 883 | vdev->ud.eh_ops.shutdown = vhci_shutdown_connection; |
| 884 | vdev->ud.eh_ops.reset = vhci_device_reset; |
| 885 | vdev->ud.eh_ops.unusable = vhci_device_unusable; |
| 886 | |
| 887 | usbip_start_eh(&vdev->ud); |
| 888 | } |
| 889 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 890 | static int vhci_start(struct usb_hcd *hcd) |
| 891 | { |
| 892 | struct vhci_hcd *vhci = hcd_to_vhci(hcd); |
| 893 | int rhport; |
| 894 | int err = 0; |
| 895 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 896 | usbip_dbg_vhci_hc("enter vhci_start\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 897 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 898 | /* initialize private data of usb_hcd */ |
| 899 | |
| 900 | for (rhport = 0; rhport < VHCI_NPORTS; rhport++) { |
| 901 | struct vhci_device *vdev = &vhci->vdev[rhport]; |
Pawel Lebioda | 3eed8c0 | 2014-05-14 19:20:27 +0200 | [diff] [blame] | 902 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 903 | vhci_device_init(vdev); |
| 904 | vdev->rhport = rhport; |
| 905 | } |
| 906 | |
| 907 | atomic_set(&vhci->seqnum, 0); |
| 908 | spin_lock_init(&vhci->lock); |
| 909 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 910 | hcd->power_budget = 0; /* no limit */ |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 911 | hcd->uses_new_polling = 1; |
| 912 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 913 | /* vhci_hcd is now ready to be controlled through sysfs */ |
| 914 | err = sysfs_create_group(&vhci_dev(vhci)->kobj, &dev_attr_group); |
| 915 | if (err) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 916 | pr_err("create sysfs files\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 917 | return err; |
| 918 | } |
| 919 | |
| 920 | return 0; |
| 921 | } |
| 922 | |
| 923 | static void vhci_stop(struct usb_hcd *hcd) |
| 924 | { |
| 925 | struct vhci_hcd *vhci = hcd_to_vhci(hcd); |
| 926 | int rhport = 0; |
| 927 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 928 | usbip_dbg_vhci_hc("stop VHCI controller\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 929 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 930 | /* 1. remove the userland interface of vhci_hcd */ |
| 931 | sysfs_remove_group(&vhci_dev(vhci)->kobj, &dev_attr_group); |
| 932 | |
| 933 | /* 2. shutdown all the ports of vhci_hcd */ |
Aldo Iljazi | 909cc6f | 2013-12-02 15:22:29 +0200 | [diff] [blame] | 934 | for (rhport = 0; rhport < VHCI_NPORTS; rhport++) { |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 935 | struct vhci_device *vdev = &vhci->vdev[rhport]; |
| 936 | |
| 937 | usbip_event_add(&vdev->ud, VDEV_EVENT_REMOVED); |
| 938 | usbip_stop_eh(&vdev->ud); |
| 939 | } |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 940 | } |
| 941 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 942 | static int vhci_get_frame_number(struct usb_hcd *hcd) |
| 943 | { |
Greg Kroah-Hartman | 083d5ad | 2016-06-14 13:41:07 -0700 | [diff] [blame] | 944 | dev_err_ratelimited(&hcd->self.root_hub->dev, "Not yet implemented\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 945 | return 0; |
| 946 | } |
| 947 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 948 | #ifdef CONFIG_PM |
| 949 | |
| 950 | /* FIXME: suspend/resume */ |
| 951 | static int vhci_bus_suspend(struct usb_hcd *hcd) |
| 952 | { |
| 953 | struct vhci_hcd *vhci = hcd_to_vhci(hcd); |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 954 | unsigned long flags; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 955 | |
| 956 | dev_dbg(&hcd->self.root_hub->dev, "%s\n", __func__); |
| 957 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 958 | spin_lock_irqsave(&vhci->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 959 | hcd->state = HC_STATE_SUSPENDED; |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 960 | spin_unlock_irqrestore(&vhci->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 961 | |
| 962 | return 0; |
| 963 | } |
| 964 | |
| 965 | static int vhci_bus_resume(struct usb_hcd *hcd) |
| 966 | { |
| 967 | struct vhci_hcd *vhci = hcd_to_vhci(hcd); |
| 968 | int rc = 0; |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 969 | unsigned long flags; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 970 | |
| 971 | dev_dbg(&hcd->self.root_hub->dev, "%s\n", __func__); |
| 972 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 973 | spin_lock_irqsave(&vhci->lock, flags); |
Stefan Reif | c46cb54 | 2013-02-22 12:13:32 +0100 | [diff] [blame] | 974 | if (!HCD_HW_ACCESSIBLE(hcd)) |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 975 | rc = -ESHUTDOWN; |
Stefan Reif | c46cb54 | 2013-02-22 12:13:32 +0100 | [diff] [blame] | 976 | else |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 977 | hcd->state = HC_STATE_RUNNING; |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 978 | spin_unlock_irqrestore(&vhci->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 979 | |
matt mooney | 8735276 | 2011-05-19 21:36:56 -0700 | [diff] [blame] | 980 | return rc; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 981 | } |
| 982 | |
| 983 | #else |
| 984 | |
| 985 | #define vhci_bus_suspend NULL |
| 986 | #define vhci_bus_resume NULL |
| 987 | #endif |
| 988 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 989 | static struct hc_driver vhci_hc_driver = { |
| 990 | .description = driver_name, |
| 991 | .product_desc = driver_desc, |
| 992 | .hcd_priv_size = sizeof(struct vhci_hcd), |
| 993 | |
| 994 | .flags = HCD_USB2, |
| 995 | |
| 996 | .start = vhci_start, |
Ruslan Pisarev | 0051268 | 2010-03-15 17:06:44 +0200 | [diff] [blame] | 997 | .stop = vhci_stop, |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 998 | |
| 999 | .urb_enqueue = vhci_urb_enqueue, |
| 1000 | .urb_dequeue = vhci_urb_dequeue, |
| 1001 | |
| 1002 | .get_frame_number = vhci_get_frame_number, |
| 1003 | |
| 1004 | .hub_status_data = vhci_hub_status, |
| 1005 | .hub_control = vhci_hub_control, |
| 1006 | .bus_suspend = vhci_bus_suspend, |
| 1007 | .bus_resume = vhci_bus_resume, |
| 1008 | }; |
| 1009 | |
| 1010 | static int vhci_hcd_probe(struct platform_device *pdev) |
| 1011 | { |
| 1012 | struct usb_hcd *hcd; |
| 1013 | int ret; |
| 1014 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 1015 | usbip_dbg_vhci_hc("name %s id %d\n", pdev->name, pdev->id); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1016 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1017 | /* |
| 1018 | * Allocate and initialize hcd. |
| 1019 | * Our private data is also allocated automatically. |
| 1020 | */ |
Kay Sievers | e913397 | 2008-10-30 01:59:32 +0100 | [diff] [blame] | 1021 | hcd = usb_create_hcd(&vhci_hc_driver, &pdev->dev, dev_name(&pdev->dev)); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1022 | if (!hcd) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 1023 | pr_err("create hcd failed\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1024 | return -ENOMEM; |
| 1025 | } |
Alan Stern | cee6a26 | 2011-05-02 14:21:44 -0400 | [diff] [blame] | 1026 | hcd->has_tt = 1; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1027 | |
| 1028 | /* this is private data for vhci_hcd */ |
| 1029 | the_controller = hcd_to_vhci(hcd); |
| 1030 | |
| 1031 | /* |
| 1032 | * Finish generic HCD structure initialization and register. |
| 1033 | * Call the driver's reset() and start() routines. |
| 1034 | */ |
| 1035 | ret = usb_add_hcd(hcd, 0, 0); |
| 1036 | if (ret != 0) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 1037 | pr_err("usb_add_hcd failed %d\n", ret); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1038 | usb_put_hcd(hcd); |
| 1039 | the_controller = NULL; |
| 1040 | return ret; |
| 1041 | } |
| 1042 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 1043 | usbip_dbg_vhci_hc("bye\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1044 | return 0; |
| 1045 | } |
| 1046 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1047 | static int vhci_hcd_remove(struct platform_device *pdev) |
| 1048 | { |
| 1049 | struct usb_hcd *hcd; |
| 1050 | |
| 1051 | hcd = platform_get_drvdata(pdev); |
| 1052 | if (!hcd) |
| 1053 | return 0; |
| 1054 | |
| 1055 | /* |
| 1056 | * Disconnects the root hub, |
| 1057 | * then reverses the effects of usb_add_hcd(), |
| 1058 | * invoking the HCD's stop() methods. |
| 1059 | */ |
| 1060 | usb_remove_hcd(hcd); |
| 1061 | usb_put_hcd(hcd); |
| 1062 | the_controller = NULL; |
| 1063 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1064 | return 0; |
| 1065 | } |
| 1066 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1067 | #ifdef CONFIG_PM |
| 1068 | |
| 1069 | /* what should happen for USB/IP under suspend/resume? */ |
| 1070 | static int vhci_hcd_suspend(struct platform_device *pdev, pm_message_t state) |
| 1071 | { |
| 1072 | struct usb_hcd *hcd; |
| 1073 | int rhport = 0; |
| 1074 | int connected = 0; |
| 1075 | int ret = 0; |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 1076 | unsigned long flags; |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1077 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1078 | hcd = platform_get_drvdata(pdev); |
| 1079 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 1080 | spin_lock_irqsave(&the_controller->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1081 | |
| 1082 | for (rhport = 0; rhport < VHCI_NPORTS; rhport++) |
| 1083 | if (the_controller->port_status[rhport] & |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 1084 | USB_PORT_STAT_CONNECTION) |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1085 | connected += 1; |
| 1086 | |
Andrew Goodbody | 2161979 | 2016-02-02 17:36:39 +0000 | [diff] [blame] | 1087 | spin_unlock_irqrestore(&the_controller->lock, flags); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1088 | |
| 1089 | if (connected > 0) { |
Cédric Cabessa | 7923a65 | 2014-03-19 23:04:57 +0100 | [diff] [blame] | 1090 | dev_info(&pdev->dev, |
| 1091 | "We have %d active connection%s. Do not suspend.\n", |
| 1092 | connected, (connected == 1 ? "" : "s")); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1093 | ret = -EBUSY; |
| 1094 | } else { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 1095 | dev_info(&pdev->dev, "suspend vhci_hcd"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1096 | clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); |
| 1097 | } |
| 1098 | |
| 1099 | return ret; |
| 1100 | } |
| 1101 | |
| 1102 | static int vhci_hcd_resume(struct platform_device *pdev) |
| 1103 | { |
| 1104 | struct usb_hcd *hcd; |
| 1105 | |
| 1106 | dev_dbg(&pdev->dev, "%s\n", __func__); |
| 1107 | |
| 1108 | hcd = platform_get_drvdata(pdev); |
| 1109 | set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); |
| 1110 | usb_hcd_poll_rh_status(hcd); |
| 1111 | |
| 1112 | return 0; |
| 1113 | } |
| 1114 | |
| 1115 | #else |
| 1116 | |
| 1117 | #define vhci_hcd_suspend NULL |
| 1118 | #define vhci_hcd_resume NULL |
| 1119 | |
| 1120 | #endif |
| 1121 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1122 | static struct platform_driver vhci_driver = { |
| 1123 | .probe = vhci_hcd_probe, |
Bill Pemberton | f307da9 | 2012-11-19 13:21:02 -0500 | [diff] [blame] | 1124 | .remove = vhci_hcd_remove, |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1125 | .suspend = vhci_hcd_suspend, |
| 1126 | .resume = vhci_hcd_resume, |
| 1127 | .driver = { |
Geert Uytterhoeven | 1c126bc | 2013-11-12 20:07:19 +0100 | [diff] [blame] | 1128 | .name = driver_name, |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1129 | }, |
| 1130 | }; |
| 1131 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1132 | /* |
| 1133 | * The VHCI 'device' is 'virtual'; not a real plug&play hardware. |
| 1134 | * We need to add this virtual device as a platform device arbitrarily: |
| 1135 | * 1. platform_device_register() |
| 1136 | */ |
| 1137 | static void the_pdev_release(struct device *dev) |
| 1138 | { |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1139 | } |
| 1140 | |
| 1141 | static struct platform_device the_pdev = { |
| 1142 | /* should be the same name as driver_name */ |
Geert Uytterhoeven | 6fafecb | 2013-11-12 20:07:21 +0100 | [diff] [blame] | 1143 | .name = driver_name, |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1144 | .id = -1, |
| 1145 | .dev = { |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1146 | .release = the_pdev_release, |
| 1147 | }, |
| 1148 | }; |
| 1149 | |
matt mooney | 0392bbb | 2011-05-19 21:37:06 -0700 | [diff] [blame] | 1150 | static int __init vhci_hcd_init(void) |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1151 | { |
| 1152 | int ret; |
| 1153 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1154 | if (usb_disabled()) |
| 1155 | return -ENODEV; |
| 1156 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1157 | ret = platform_driver_register(&vhci_driver); |
navin patidar | 4d42195 | 2013-09-10 10:43:39 +0530 | [diff] [blame] | 1158 | if (ret) |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1159 | goto err_driver_register; |
| 1160 | |
| 1161 | ret = platform_device_register(&the_pdev); |
navin patidar | 4d42195 | 2013-09-10 10:43:39 +0530 | [diff] [blame] | 1162 | if (ret) |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1163 | goto err_platform_device_register; |
| 1164 | |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 1165 | pr_info(DRIVER_DESC " v" USBIP_VERSION "\n"); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1166 | return ret; |
| 1167 | |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1168 | err_platform_device_register: |
| 1169 | platform_driver_unregister(&vhci_driver); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1170 | err_driver_register: |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1171 | return ret; |
| 1172 | } |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1173 | |
matt mooney | 0392bbb | 2011-05-19 21:37:06 -0700 | [diff] [blame] | 1174 | static void __exit vhci_hcd_exit(void) |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1175 | { |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1176 | platform_device_unregister(&the_pdev); |
| 1177 | platform_driver_unregister(&vhci_driver); |
Takahiro Hirofuchi | 04679b3 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1178 | } |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 1179 | |
matt mooney | 0392bbb | 2011-05-19 21:37:06 -0700 | [diff] [blame] | 1180 | module_init(vhci_hcd_init); |
| 1181 | module_exit(vhci_hcd_exit); |
matt mooney | 071d1d4 | 2011-05-06 03:47:50 -0700 | [diff] [blame] | 1182 | |
| 1183 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 1184 | MODULE_DESCRIPTION(DRIVER_DESC); |
matt mooney | 4ce0a41 | 2011-05-06 03:47:56 -0700 | [diff] [blame] | 1185 | MODULE_LICENSE("GPL"); |
matt mooney | 6973c6f | 2011-05-11 01:54:14 -0700 | [diff] [blame] | 1186 | MODULE_VERSION(USBIP_VERSION); |