Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1 | /* |
| 2 | * xHCI host controller driver |
| 3 | * |
| 4 | * Copyright (C) 2008 Intel Corp. |
| 5 | * |
| 6 | * Author: Sarah Sharp |
| 7 | * Some code borrowed from the Linux EHCI driver. |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 as |
| 11 | * published by the Free Software Foundation. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, but |
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 15 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 16 | * for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software Foundation, |
| 20 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 21 | */ |
| 22 | |
Mathias Nyman | ddba5cd | 2014-05-08 19:26:00 +0300 | [diff] [blame] | 23 | |
| 24 | #include <linux/slab.h> |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 25 | #include <asm/unaligned.h> |
| 26 | |
| 27 | #include "xhci.h" |
Xenia Ragiadakou | 4bdfe4c | 2013-08-06 07:52:45 +0300 | [diff] [blame] | 28 | #include "xhci-trace.h" |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 29 | |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 30 | #define PORT_WAKE_BITS (PORT_WKOC_E | PORT_WKDISC_E | PORT_WKCONN_E) |
| 31 | #define PORT_RWC_BITS (PORT_CSC | PORT_PEC | PORT_WRC | PORT_OCC | \ |
| 32 | PORT_RC | PORT_PLC | PORT_PE) |
| 33 | |
Sebastian Andrzej Siewior | 3415fc9 | 2012-08-22 15:12:06 +0200 | [diff] [blame] | 34 | /* USB 3.0 BOS descriptor and a capability descriptor, combined */ |
Sarah Sharp | 48e8236 | 2011-10-06 11:54:23 -0700 | [diff] [blame] | 35 | static u8 usb_bos_descriptor [] = { |
| 36 | USB_DT_BOS_SIZE, /* __u8 bLength, 5 bytes */ |
| 37 | USB_DT_BOS, /* __u8 bDescriptorType */ |
| 38 | 0x0F, 0x00, /* __le16 wTotalLength, 15 bytes */ |
| 39 | 0x1, /* __u8 bNumDeviceCaps */ |
| 40 | /* First device capability */ |
| 41 | USB_DT_USB_SS_CAP_SIZE, /* __u8 bLength, 10 bytes */ |
| 42 | USB_DT_DEVICE_CAPABILITY, /* Device Capability */ |
| 43 | USB_SS_CAP_TYPE, /* bDevCapabilityType, SUPERSPEED_USB */ |
| 44 | 0x00, /* bmAttributes, LTM off by default */ |
| 45 | USB_5GBPS_OPERATION, 0x00, /* wSpeedsSupported, 5Gbps only */ |
| 46 | 0x03, /* bFunctionalitySupport, |
| 47 | USB 3.0 speed only */ |
| 48 | 0x00, /* bU1DevExitLat, set later. */ |
| 49 | 0x00, 0x00 /* __le16 bU2DevExitLat, set later. */ |
| 50 | }; |
| 51 | |
| 52 | |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 53 | static void xhci_common_hub_descriptor(struct xhci_hcd *xhci, |
| 54 | struct usb_hub_descriptor *desc, int ports) |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 55 | { |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 56 | u16 temp; |
| 57 | |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 58 | desc->bPwrOn2PwrGood = 10; /* xhci section 5.4.9 says 20ms max */ |
| 59 | desc->bHubContrCurrent = 0; |
| 60 | |
| 61 | desc->bNbrPorts = ports; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 62 | temp = 0; |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 63 | /* Bits 1:0 - support per-port power switching, or power always on */ |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 64 | if (HCC_PPC(xhci->hcc_params)) |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 65 | temp |= HUB_CHAR_INDV_PORT_LPSM; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 66 | else |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 67 | temp |= HUB_CHAR_NO_LPSM; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 68 | /* Bit 2 - root hubs are not part of a compound device */ |
| 69 | /* Bits 4:3 - individual port over current protection */ |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 70 | temp |= HUB_CHAR_INDV_PORT_OCPM; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 71 | /* Bits 6:5 - no TTs in root ports */ |
| 72 | /* Bit 7 - no port indicators */ |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 73 | desc->wHubCharacteristics = cpu_to_le16(temp); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 74 | } |
| 75 | |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 76 | /* Fill in the USB 2.0 roothub descriptor */ |
| 77 | static void xhci_usb2_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
| 78 | struct usb_hub_descriptor *desc) |
| 79 | { |
| 80 | int ports; |
| 81 | u16 temp; |
| 82 | __u8 port_removable[(USB_MAXCHILDREN + 1 + 7) / 8]; |
| 83 | u32 portsc; |
| 84 | unsigned int i; |
| 85 | |
| 86 | ports = xhci->num_usb2_ports; |
| 87 | |
| 88 | xhci_common_hub_descriptor(xhci, desc, ports); |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 89 | desc->bDescriptorType = USB_DT_HUB; |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 90 | temp = 1 + (ports / 8); |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 91 | desc->bDescLength = USB_DT_HUB_NONVAR_SIZE + 2 * temp; |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 92 | |
| 93 | /* The Device Removable bits are reported on a byte granularity. |
| 94 | * If the port doesn't exist within that byte, the bit is set to 0. |
| 95 | */ |
| 96 | memset(port_removable, 0, sizeof(port_removable)); |
| 97 | for (i = 0; i < ports; i++) { |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 98 | portsc = readl(xhci->usb2_ports[i]); |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 99 | /* If a device is removable, PORTSC reports a 0, same as in the |
| 100 | * hub descriptor DeviceRemovable bits. |
| 101 | */ |
| 102 | if (portsc & PORT_DEV_REMOVE) |
| 103 | /* This math is hairy because bit 0 of DeviceRemovable |
| 104 | * is reserved, and bit 1 is for port 1, etc. |
| 105 | */ |
| 106 | port_removable[(i + 1) / 8] |= 1 << ((i + 1) % 8); |
| 107 | } |
| 108 | |
| 109 | /* ch11.h defines a hub descriptor that has room for USB_MAXCHILDREN |
| 110 | * ports on it. The USB 2.0 specification says that there are two |
| 111 | * variable length fields at the end of the hub descriptor: |
| 112 | * DeviceRemovable and PortPwrCtrlMask. But since we can have less than |
| 113 | * USB_MAXCHILDREN ports, we may need to use the DeviceRemovable array |
| 114 | * to set PortPwrCtrlMask bits. PortPwrCtrlMask must always be set to |
| 115 | * 0xFF, so we initialize the both arrays (DeviceRemovable and |
| 116 | * PortPwrCtrlMask) to 0xFF. Then we set the DeviceRemovable for each |
| 117 | * set of ports that actually exist. |
| 118 | */ |
| 119 | memset(desc->u.hs.DeviceRemovable, 0xff, |
| 120 | sizeof(desc->u.hs.DeviceRemovable)); |
| 121 | memset(desc->u.hs.PortPwrCtrlMask, 0xff, |
| 122 | sizeof(desc->u.hs.PortPwrCtrlMask)); |
| 123 | |
| 124 | for (i = 0; i < (ports + 1 + 7) / 8; i++) |
| 125 | memset(&desc->u.hs.DeviceRemovable[i], port_removable[i], |
| 126 | sizeof(__u8)); |
| 127 | } |
| 128 | |
| 129 | /* Fill in the USB 3.0 roothub descriptor */ |
| 130 | static void xhci_usb3_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
| 131 | struct usb_hub_descriptor *desc) |
| 132 | { |
| 133 | int ports; |
| 134 | u16 port_removable; |
| 135 | u32 portsc; |
| 136 | unsigned int i; |
| 137 | |
| 138 | ports = xhci->num_usb3_ports; |
| 139 | xhci_common_hub_descriptor(xhci, desc, ports); |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 140 | desc->bDescriptorType = USB_DT_SS_HUB; |
| 141 | desc->bDescLength = USB_DT_SS_HUB_SIZE; |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 142 | |
| 143 | /* header decode latency should be zero for roothubs, |
| 144 | * see section 4.23.5.2. |
| 145 | */ |
| 146 | desc->u.ss.bHubHdrDecLat = 0; |
| 147 | desc->u.ss.wHubDelay = 0; |
| 148 | |
| 149 | port_removable = 0; |
| 150 | /* bit 0 is reserved, bit 1 is for port 1, etc. */ |
| 151 | for (i = 0; i < ports; i++) { |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 152 | portsc = readl(xhci->usb3_ports[i]); |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 153 | if (portsc & PORT_DEV_REMOVE) |
| 154 | port_removable |= 1 << (i + 1); |
| 155 | } |
Lan Tianyu | 27c411c | 2012-10-15 15:38:35 +0800 | [diff] [blame] | 156 | |
| 157 | desc->u.ss.DeviceRemovable = cpu_to_le16(port_removable); |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 158 | } |
| 159 | |
| 160 | static void xhci_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
| 161 | struct usb_hub_descriptor *desc) |
| 162 | { |
| 163 | |
| 164 | if (hcd->speed == HCD_USB3) |
| 165 | xhci_usb3_hub_descriptor(hcd, xhci, desc); |
| 166 | else |
| 167 | xhci_usb2_hub_descriptor(hcd, xhci, desc); |
| 168 | |
| 169 | } |
| 170 | |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 171 | static unsigned int xhci_port_speed(unsigned int port_status) |
| 172 | { |
| 173 | if (DEV_LOWSPEED(port_status)) |
Alan Stern | 288ead4 | 2010-03-04 11:32:30 -0500 | [diff] [blame] | 174 | return USB_PORT_STAT_LOW_SPEED; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 175 | if (DEV_HIGHSPEED(port_status)) |
Alan Stern | 288ead4 | 2010-03-04 11:32:30 -0500 | [diff] [blame] | 176 | return USB_PORT_STAT_HIGH_SPEED; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 177 | /* |
| 178 | * FIXME: Yes, we should check for full speed, but the core uses that as |
| 179 | * a default in portspeed() in usb/core/hub.c (which is the only place |
Alan Stern | 288ead4 | 2010-03-04 11:32:30 -0500 | [diff] [blame] | 180 | * USB_PORT_STAT_*_SPEED is used). |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 181 | */ |
| 182 | return 0; |
| 183 | } |
| 184 | |
| 185 | /* |
| 186 | * These bits are Read Only (RO) and should be saved and written to the |
| 187 | * registers: 0, 3, 10:13, 30 |
| 188 | * connect status, over-current status, port speed, and device removable. |
| 189 | * connect status and port speed are also sticky - meaning they're in |
| 190 | * the AUX well and they aren't changed by a hot, warm, or cold reset. |
| 191 | */ |
| 192 | #define XHCI_PORT_RO ((1<<0) | (1<<3) | (0xf<<10) | (1<<30)) |
| 193 | /* |
| 194 | * These bits are RW; writing a 0 clears the bit, writing a 1 sets the bit: |
| 195 | * bits 5:8, 9, 14:15, 25:27 |
| 196 | * link state, port power, port indicator state, "wake on" enable state |
| 197 | */ |
| 198 | #define XHCI_PORT_RWS ((0xf<<5) | (1<<9) | (0x3<<14) | (0x7<<25)) |
| 199 | /* |
| 200 | * These bits are RW; writing a 1 sets the bit, writing a 0 has no effect: |
| 201 | * bit 4 (port reset) |
| 202 | */ |
| 203 | #define XHCI_PORT_RW1S ((1<<4)) |
| 204 | /* |
| 205 | * These bits are RW; writing a 1 clears the bit, writing a 0 has no effect: |
| 206 | * bits 1, 17, 18, 19, 20, 21, 22, 23 |
| 207 | * port enable/disable, and |
| 208 | * change bits: connect, PED, warm port reset changed (reserved zero for USB 2.0 ports), |
| 209 | * over-current, reset, link state, and L1 change |
| 210 | */ |
| 211 | #define XHCI_PORT_RW1CS ((1<<1) | (0x7f<<17)) |
| 212 | /* |
| 213 | * Bit 16 is RW, and writing a '1' to it causes the link state control to be |
| 214 | * latched in |
| 215 | */ |
| 216 | #define XHCI_PORT_RW ((1<<16)) |
| 217 | /* |
| 218 | * These bits are Reserved Zero (RsvdZ) and zero should be written to them: |
| 219 | * bits 2, 24, 28:31 |
| 220 | */ |
| 221 | #define XHCI_PORT_RZ ((1<<2) | (1<<24) | (0xf<<28)) |
| 222 | |
| 223 | /* |
| 224 | * Given a port state, this function returns a value that would result in the |
| 225 | * port being in the same state, if the value was written to the port status |
| 226 | * control register. |
| 227 | * Save Read Only (RO) bits and save read/write bits where |
| 228 | * writing a 0 clears the bit and writing a 1 sets the bit (RWS). |
| 229 | * For all other types (RW1S, RW1CS, RW, and RZ), writing a '0' has no effect. |
| 230 | */ |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 231 | u32 xhci_port_state_to_neutral(u32 state) |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 232 | { |
| 233 | /* Save read-only status and port state */ |
| 234 | return (state & XHCI_PORT_RO) | (state & XHCI_PORT_RWS); |
| 235 | } |
| 236 | |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 237 | /* |
| 238 | * find slot id based on port number. |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 239 | * @port: The one-based port number from one of the two split roothubs. |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 240 | */ |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 241 | int xhci_find_slot_id_by_port(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
| 242 | u16 port) |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 243 | { |
| 244 | int slot_id; |
| 245 | int i; |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 246 | enum usb_device_speed speed; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 247 | |
| 248 | slot_id = 0; |
| 249 | for (i = 0; i < MAX_HC_SLOTS; i++) { |
| 250 | if (!xhci->devs[i]) |
| 251 | continue; |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 252 | speed = xhci->devs[i]->udev->speed; |
| 253 | if (((speed == USB_SPEED_SUPER) == (hcd->speed == HCD_USB3)) |
Sarah Sharp | fe30182 | 2011-09-02 11:05:41 -0700 | [diff] [blame] | 254 | && xhci->devs[i]->fake_port == port) { |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 255 | slot_id = i; |
| 256 | break; |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | return slot_id; |
| 261 | } |
| 262 | |
| 263 | /* |
| 264 | * Stop device |
| 265 | * It issues stop endpoint command for EP 0 to 30. And wait the last command |
| 266 | * to complete. |
| 267 | * suspend will set to 1, if suspend bit need to set in command. |
| 268 | */ |
| 269 | static int xhci_stop_device(struct xhci_hcd *xhci, int slot_id, int suspend) |
| 270 | { |
| 271 | struct xhci_virt_device *virt_dev; |
| 272 | struct xhci_command *cmd; |
| 273 | unsigned long flags; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 274 | int ret; |
| 275 | int i; |
| 276 | |
| 277 | ret = 0; |
| 278 | virt_dev = xhci->devs[slot_id]; |
| 279 | cmd = xhci_alloc_command(xhci, false, true, GFP_NOIO); |
| 280 | if (!cmd) { |
| 281 | xhci_dbg(xhci, "Couldn't allocate command structure.\n"); |
| 282 | return -ENOMEM; |
| 283 | } |
| 284 | |
| 285 | spin_lock_irqsave(&xhci->lock, flags); |
| 286 | for (i = LAST_EP_INDEX; i > 0; i--) { |
Mathias Nyman | ddba5cd | 2014-05-08 19:26:00 +0300 | [diff] [blame] | 287 | if (virt_dev->eps[i].ring && virt_dev->eps[i].ring->dequeue) { |
| 288 | struct xhci_command *command; |
| 289 | command = xhci_alloc_command(xhci, false, false, |
Mathias Nyman | be3de32 | 2014-06-10 11:27:41 +0300 | [diff] [blame] | 290 | GFP_NOWAIT); |
Mathias Nyman | ddba5cd | 2014-05-08 19:26:00 +0300 | [diff] [blame] | 291 | if (!command) { |
| 292 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 293 | xhci_free_command(xhci, cmd); |
| 294 | return -ENOMEM; |
| 295 | |
| 296 | } |
| 297 | xhci_queue_stop_endpoint(xhci, command, slot_id, i, |
| 298 | suspend); |
| 299 | } |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 300 | } |
Mathias Nyman | ddba5cd | 2014-05-08 19:26:00 +0300 | [diff] [blame] | 301 | xhci_queue_stop_endpoint(xhci, cmd, slot_id, 0, suspend); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 302 | xhci_ring_cmd_db(xhci); |
| 303 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 304 | |
| 305 | /* Wait for last stop endpoint command to finish */ |
Mathias Nyman | c311e39 | 2014-05-08 19:26:03 +0300 | [diff] [blame] | 306 | wait_for_completion(cmd->completion); |
| 307 | |
| 308 | if (cmd->status == COMP_CMD_ABORT || cmd->status == COMP_CMD_STOP) { |
| 309 | xhci_warn(xhci, "Timeout while waiting for stop endpoint command\n"); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 310 | ret = -ETIME; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 311 | } |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 312 | xhci_free_command(xhci, cmd); |
| 313 | return ret; |
| 314 | } |
| 315 | |
| 316 | /* |
| 317 | * Ring device, it rings the all doorbells unconditionally. |
| 318 | */ |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 319 | void xhci_ring_device(struct xhci_hcd *xhci, int slot_id) |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 320 | { |
Hans de Goede | b7f9696 | 2014-08-20 16:41:56 +0300 | [diff] [blame] | 321 | int i, s; |
| 322 | struct xhci_virt_ep *ep; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 323 | |
Hans de Goede | b7f9696 | 2014-08-20 16:41:56 +0300 | [diff] [blame] | 324 | for (i = 0; i < LAST_EP_INDEX + 1; i++) { |
| 325 | ep = &xhci->devs[slot_id]->eps[i]; |
| 326 | |
| 327 | if (ep->ep_state & EP_HAS_STREAMS) { |
| 328 | for (s = 1; s < ep->stream_info->num_streams; s++) |
| 329 | xhci_ring_ep_doorbell(xhci, slot_id, i, s); |
| 330 | } else if (ep->ring && ep->ring->dequeue) { |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 331 | xhci_ring_ep_doorbell(xhci, slot_id, i, 0); |
Hans de Goede | b7f9696 | 2014-08-20 16:41:56 +0300 | [diff] [blame] | 332 | } |
| 333 | } |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 334 | |
| 335 | return; |
| 336 | } |
| 337 | |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 338 | static void xhci_disable_port(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 339 | u16 wIndex, __le32 __iomem *addr, u32 port_status) |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 340 | { |
Sarah Sharp | 6dd0a3a7 | 2010-11-16 15:58:52 -0800 | [diff] [blame] | 341 | /* Don't allow the USB core to disable SuperSpeed ports. */ |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 342 | if (hcd->speed == HCD_USB3) { |
Sarah Sharp | 6dd0a3a7 | 2010-11-16 15:58:52 -0800 | [diff] [blame] | 343 | xhci_dbg(xhci, "Ignoring request to disable " |
| 344 | "SuperSpeed port.\n"); |
| 345 | return; |
| 346 | } |
| 347 | |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 348 | /* Write 1 to disable the port */ |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 349 | writel(port_status | PORT_PE, addr); |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 350 | port_status = readl(addr); |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 351 | xhci_dbg(xhci, "disable port, actual port %d status = 0x%x\n", |
| 352 | wIndex, port_status); |
| 353 | } |
| 354 | |
Sarah Sharp | 34fb562 | 2009-12-09 15:59:08 -0800 | [diff] [blame] | 355 | static void xhci_clear_port_change_bit(struct xhci_hcd *xhci, u16 wValue, |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 356 | u16 wIndex, __le32 __iomem *addr, u32 port_status) |
Sarah Sharp | 34fb562 | 2009-12-09 15:59:08 -0800 | [diff] [blame] | 357 | { |
| 358 | char *port_change_bit; |
| 359 | u32 status; |
| 360 | |
| 361 | switch (wValue) { |
| 362 | case USB_PORT_FEAT_C_RESET: |
| 363 | status = PORT_RC; |
| 364 | port_change_bit = "reset"; |
| 365 | break; |
Andiry Xu | a11496e | 2011-04-27 18:07:29 +0800 | [diff] [blame] | 366 | case USB_PORT_FEAT_C_BH_PORT_RESET: |
| 367 | status = PORT_WRC; |
| 368 | port_change_bit = "warm(BH) reset"; |
| 369 | break; |
Sarah Sharp | 34fb562 | 2009-12-09 15:59:08 -0800 | [diff] [blame] | 370 | case USB_PORT_FEAT_C_CONNECTION: |
| 371 | status = PORT_CSC; |
| 372 | port_change_bit = "connect"; |
| 373 | break; |
| 374 | case USB_PORT_FEAT_C_OVER_CURRENT: |
| 375 | status = PORT_OCC; |
| 376 | port_change_bit = "over-current"; |
| 377 | break; |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 378 | case USB_PORT_FEAT_C_ENABLE: |
| 379 | status = PORT_PEC; |
| 380 | port_change_bit = "enable/disable"; |
| 381 | break; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 382 | case USB_PORT_FEAT_C_SUSPEND: |
| 383 | status = PORT_PLC; |
| 384 | port_change_bit = "suspend/resume"; |
| 385 | break; |
Andiry Xu | 85387c0 | 2011-04-27 18:07:35 +0800 | [diff] [blame] | 386 | case USB_PORT_FEAT_C_PORT_LINK_STATE: |
| 387 | status = PORT_PLC; |
| 388 | port_change_bit = "link state"; |
| 389 | break; |
Sarah Sharp | 34fb562 | 2009-12-09 15:59:08 -0800 | [diff] [blame] | 390 | default: |
| 391 | /* Should never happen */ |
| 392 | return; |
| 393 | } |
| 394 | /* Change bits are all write 1 to clear */ |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 395 | writel(port_status | status, addr); |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 396 | port_status = readl(addr); |
Sarah Sharp | 34fb562 | 2009-12-09 15:59:08 -0800 | [diff] [blame] | 397 | xhci_dbg(xhci, "clear port %s change, actual port %d status = 0x%x\n", |
| 398 | port_change_bit, wIndex, port_status); |
| 399 | } |
| 400 | |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 401 | static int xhci_get_ports(struct usb_hcd *hcd, __le32 __iomem ***port_array) |
| 402 | { |
| 403 | int max_ports; |
| 404 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
| 405 | |
| 406 | if (hcd->speed == HCD_USB3) { |
| 407 | max_ports = xhci->num_usb3_ports; |
| 408 | *port_array = xhci->usb3_ports; |
| 409 | } else { |
| 410 | max_ports = xhci->num_usb2_ports; |
| 411 | *port_array = xhci->usb2_ports; |
| 412 | } |
| 413 | |
| 414 | return max_ports; |
| 415 | } |
| 416 | |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 417 | void xhci_set_link_state(struct xhci_hcd *xhci, __le32 __iomem **port_array, |
| 418 | int port_id, u32 link_state) |
| 419 | { |
| 420 | u32 temp; |
| 421 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 422 | temp = readl(port_array[port_id]); |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 423 | temp = xhci_port_state_to_neutral(temp); |
| 424 | temp &= ~PORT_PLS_MASK; |
| 425 | temp |= PORT_LINK_STROBE | link_state; |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 426 | writel(temp, port_array[port_id]); |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 427 | } |
| 428 | |
Felipe Balbi | ed384bd | 2012-08-07 14:10:03 +0300 | [diff] [blame] | 429 | static void xhci_set_remote_wake_mask(struct xhci_hcd *xhci, |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 430 | __le32 __iomem **port_array, int port_id, u16 wake_mask) |
| 431 | { |
| 432 | u32 temp; |
| 433 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 434 | temp = readl(port_array[port_id]); |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 435 | temp = xhci_port_state_to_neutral(temp); |
| 436 | |
| 437 | if (wake_mask & USB_PORT_FEAT_REMOTE_WAKE_CONNECT) |
| 438 | temp |= PORT_WKCONN_E; |
| 439 | else |
| 440 | temp &= ~PORT_WKCONN_E; |
| 441 | |
| 442 | if (wake_mask & USB_PORT_FEAT_REMOTE_WAKE_DISCONNECT) |
| 443 | temp |= PORT_WKDISC_E; |
| 444 | else |
| 445 | temp &= ~PORT_WKDISC_E; |
| 446 | |
| 447 | if (wake_mask & USB_PORT_FEAT_REMOTE_WAKE_OVER_CURRENT) |
| 448 | temp |= PORT_WKOC_E; |
| 449 | else |
| 450 | temp &= ~PORT_WKOC_E; |
| 451 | |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 452 | writel(temp, port_array[port_id]); |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 453 | } |
| 454 | |
Andiry Xu | d2f52c9 | 2011-09-23 14:19:49 -0700 | [diff] [blame] | 455 | /* Test and clear port RWC bit */ |
| 456 | void xhci_test_and_clear_bit(struct xhci_hcd *xhci, __le32 __iomem **port_array, |
| 457 | int port_id, u32 port_bit) |
| 458 | { |
| 459 | u32 temp; |
| 460 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 461 | temp = readl(port_array[port_id]); |
Andiry Xu | d2f52c9 | 2011-09-23 14:19:49 -0700 | [diff] [blame] | 462 | if (temp & port_bit) { |
| 463 | temp = xhci_port_state_to_neutral(temp); |
| 464 | temp |= port_bit; |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 465 | writel(temp, port_array[port_id]); |
Andiry Xu | d2f52c9 | 2011-09-23 14:19:49 -0700 | [diff] [blame] | 466 | } |
| 467 | } |
| 468 | |
Sarah Sharp | 063ebeb | 2013-04-02 09:23:42 -0700 | [diff] [blame] | 469 | /* Updates Link Status for USB 2.1 port */ |
| 470 | static void xhci_hub_report_usb2_link_state(u32 *status, u32 status_reg) |
| 471 | { |
| 472 | if ((status_reg & PORT_PLS_MASK) == XDEV_U2) |
| 473 | *status |= USB_PORT_STAT_L1; |
| 474 | } |
| 475 | |
Stanislaw Ledwon | 8bea2bd | 2012-06-18 15:20:00 +0200 | [diff] [blame] | 476 | /* Updates Link Status for super Speed port */ |
Felipe Balbi | 9690858 | 2014-08-27 16:38:04 -0500 | [diff] [blame] | 477 | static void xhci_hub_report_usb3_link_state(struct xhci_hcd *xhci, |
| 478 | u32 *status, u32 status_reg) |
Stanislaw Ledwon | 8bea2bd | 2012-06-18 15:20:00 +0200 | [diff] [blame] | 479 | { |
| 480 | u32 pls = status_reg & PORT_PLS_MASK; |
| 481 | |
| 482 | /* resume state is a xHCI internal state. |
| 483 | * Do not report it to usb core. |
| 484 | */ |
| 485 | if (pls == XDEV_RESUME) |
| 486 | return; |
| 487 | |
| 488 | /* When the CAS bit is set then warm reset |
| 489 | * should be performed on port |
| 490 | */ |
| 491 | if (status_reg & PORT_CAS) { |
| 492 | /* The CAS bit can be set while the port is |
| 493 | * in any link state. |
| 494 | * Only roothubs have CAS bit, so we |
| 495 | * pretend to be in compliance mode |
| 496 | * unless we're already in compliance |
| 497 | * or the inactive state. |
| 498 | */ |
| 499 | if (pls != USB_SS_PORT_LS_COMP_MOD && |
| 500 | pls != USB_SS_PORT_LS_SS_INACTIVE) { |
| 501 | pls = USB_SS_PORT_LS_COMP_MOD; |
| 502 | } |
| 503 | /* Return also connection bit - |
| 504 | * hub state machine resets port |
| 505 | * when this bit is set. |
| 506 | */ |
| 507 | pls |= USB_PORT_STAT_CONNECTION; |
Alexis R. Cortes | 71c731a | 2012-08-03 14:00:27 -0500 | [diff] [blame] | 508 | } else { |
| 509 | /* |
| 510 | * If CAS bit isn't set but the Port is already at |
| 511 | * Compliance Mode, fake a connection so the USB core |
| 512 | * notices the Compliance state and resets the port. |
| 513 | * This resolves an issue generated by the SN65LVPE502CP |
| 514 | * in which sometimes the port enters compliance mode |
| 515 | * caused by a delay on the host-device negotiation. |
| 516 | */ |
Felipe Balbi | 9690858 | 2014-08-27 16:38:04 -0500 | [diff] [blame] | 517 | if ((xhci->quirks & XHCI_COMP_MODE_QUIRK) && |
| 518 | (pls == USB_SS_PORT_LS_COMP_MOD)) |
Alexis R. Cortes | 71c731a | 2012-08-03 14:00:27 -0500 | [diff] [blame] | 519 | pls |= USB_PORT_STAT_CONNECTION; |
Stanislaw Ledwon | 8bea2bd | 2012-06-18 15:20:00 +0200 | [diff] [blame] | 520 | } |
Alexis R. Cortes | 71c731a | 2012-08-03 14:00:27 -0500 | [diff] [blame] | 521 | |
Stanislaw Ledwon | 8bea2bd | 2012-06-18 15:20:00 +0200 | [diff] [blame] | 522 | /* update status field */ |
| 523 | *status |= pls; |
| 524 | } |
| 525 | |
Alexis R. Cortes | 71c731a | 2012-08-03 14:00:27 -0500 | [diff] [blame] | 526 | /* |
| 527 | * Function for Compliance Mode Quirk. |
| 528 | * |
| 529 | * This Function verifies if all xhc USB3 ports have entered U0, if so, |
| 530 | * the compliance mode timer is deleted. A port won't enter |
| 531 | * compliance mode if it has previously entered U0. |
| 532 | */ |
Sachin Kamat | 5f20cf1 | 2013-09-16 12:01:34 +0530 | [diff] [blame] | 533 | static void xhci_del_comp_mod_timer(struct xhci_hcd *xhci, u32 status, |
| 534 | u16 wIndex) |
Alexis R. Cortes | 71c731a | 2012-08-03 14:00:27 -0500 | [diff] [blame] | 535 | { |
| 536 | u32 all_ports_seen_u0 = ((1 << xhci->num_usb3_ports)-1); |
| 537 | bool port_in_u0 = ((status & PORT_PLS_MASK) == XDEV_U0); |
| 538 | |
| 539 | if (!(xhci->quirks & XHCI_COMP_MODE_QUIRK)) |
| 540 | return; |
| 541 | |
| 542 | if ((xhci->port_status_u0 != all_ports_seen_u0) && port_in_u0) { |
| 543 | xhci->port_status_u0 |= 1 << wIndex; |
| 544 | if (xhci->port_status_u0 == all_ports_seen_u0) { |
| 545 | del_timer_sync(&xhci->comp_mode_recovery_timer); |
Xenia Ragiadakou | 4bdfe4c | 2013-08-06 07:52:45 +0300 | [diff] [blame] | 546 | xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, |
| 547 | "All USB3 ports have entered U0 already!"); |
| 548 | xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, |
| 549 | "Compliance Mode Recovery Timer Deleted."); |
Alexis R. Cortes | 71c731a | 2012-08-03 14:00:27 -0500 | [diff] [blame] | 550 | } |
| 551 | } |
| 552 | } |
| 553 | |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 554 | /* |
| 555 | * Converts a raw xHCI port status into the format that external USB 2.0 or USB |
| 556 | * 3.0 hubs use. |
| 557 | * |
| 558 | * Possible side effects: |
| 559 | * - Mark a port as being done with device resume, |
| 560 | * and ring the endpoint doorbells. |
| 561 | * - Stop the Synopsys redriver Compliance Mode polling. |
Sarah Sharp | 8b3d457 | 2013-08-20 08:12:12 -0700 | [diff] [blame] | 562 | * - Drop and reacquire the xHCI lock, in order to wait for port resume. |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 563 | */ |
| 564 | static u32 xhci_get_port_status(struct usb_hcd *hcd, |
| 565 | struct xhci_bus_state *bus_state, |
| 566 | __le32 __iomem **port_array, |
Sarah Sharp | 8b3d457 | 2013-08-20 08:12:12 -0700 | [diff] [blame] | 567 | u16 wIndex, u32 raw_port_status, |
| 568 | unsigned long flags) |
| 569 | __releases(&xhci->lock) |
| 570 | __acquires(&xhci->lock) |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 571 | { |
| 572 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
| 573 | u32 status = 0; |
| 574 | int slot_id; |
| 575 | |
| 576 | /* wPortChange bits */ |
| 577 | if (raw_port_status & PORT_CSC) |
| 578 | status |= USB_PORT_STAT_C_CONNECTION << 16; |
| 579 | if (raw_port_status & PORT_PEC) |
| 580 | status |= USB_PORT_STAT_C_ENABLE << 16; |
| 581 | if ((raw_port_status & PORT_OCC)) |
| 582 | status |= USB_PORT_STAT_C_OVERCURRENT << 16; |
| 583 | if ((raw_port_status & PORT_RC)) |
| 584 | status |= USB_PORT_STAT_C_RESET << 16; |
| 585 | /* USB3.0 only */ |
| 586 | if (hcd->speed == HCD_USB3) { |
| 587 | if ((raw_port_status & PORT_PLC)) |
| 588 | status |= USB_PORT_STAT_C_LINK_STATE << 16; |
| 589 | if ((raw_port_status & PORT_WRC)) |
| 590 | status |= USB_PORT_STAT_C_BH_RESET << 16; |
| 591 | } |
| 592 | |
| 593 | if (hcd->speed != HCD_USB3) { |
| 594 | if ((raw_port_status & PORT_PLS_MASK) == XDEV_U3 |
| 595 | && (raw_port_status & PORT_POWER)) |
| 596 | status |= USB_PORT_STAT_SUSPEND; |
| 597 | } |
| 598 | if ((raw_port_status & PORT_PLS_MASK) == XDEV_RESUME && |
| 599 | !DEV_SUPERSPEED(raw_port_status)) { |
| 600 | if ((raw_port_status & PORT_RESET) || |
| 601 | !(raw_port_status & PORT_PE)) |
| 602 | return 0xffffffff; |
| 603 | if (time_after_eq(jiffies, |
| 604 | bus_state->resume_done[wIndex])) { |
Sarah Sharp | 8b3d457 | 2013-08-20 08:12:12 -0700 | [diff] [blame] | 605 | int time_left; |
| 606 | |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 607 | xhci_dbg(xhci, "Resume USB2 port %d\n", |
| 608 | wIndex + 1); |
| 609 | bus_state->resume_done[wIndex] = 0; |
| 610 | clear_bit(wIndex, &bus_state->resuming_ports); |
Sarah Sharp | 8b3d457 | 2013-08-20 08:12:12 -0700 | [diff] [blame] | 611 | |
| 612 | set_bit(wIndex, &bus_state->rexit_ports); |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 613 | xhci_set_link_state(xhci, port_array, wIndex, |
| 614 | XDEV_U0); |
Sarah Sharp | 8b3d457 | 2013-08-20 08:12:12 -0700 | [diff] [blame] | 615 | |
| 616 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 617 | time_left = wait_for_completion_timeout( |
| 618 | &bus_state->rexit_done[wIndex], |
| 619 | msecs_to_jiffies( |
| 620 | XHCI_MAX_REXIT_TIMEOUT)); |
| 621 | spin_lock_irqsave(&xhci->lock, flags); |
| 622 | |
| 623 | if (time_left) { |
| 624 | slot_id = xhci_find_slot_id_by_port(hcd, |
| 625 | xhci, wIndex + 1); |
| 626 | if (!slot_id) { |
| 627 | xhci_dbg(xhci, "slot_id is zero\n"); |
| 628 | return 0xffffffff; |
| 629 | } |
| 630 | xhci_ring_device(xhci, slot_id); |
| 631 | } else { |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 632 | int port_status = readl(port_array[wIndex]); |
Sarah Sharp | 8b3d457 | 2013-08-20 08:12:12 -0700 | [diff] [blame] | 633 | xhci_warn(xhci, "Port resume took longer than %i msec, port status = 0x%x\n", |
| 634 | XHCI_MAX_REXIT_TIMEOUT, |
| 635 | port_status); |
| 636 | status |= USB_PORT_STAT_SUSPEND; |
| 637 | clear_bit(wIndex, &bus_state->rexit_ports); |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 638 | } |
Sarah Sharp | 8b3d457 | 2013-08-20 08:12:12 -0700 | [diff] [blame] | 639 | |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 640 | bus_state->port_c_suspend |= 1 << wIndex; |
| 641 | bus_state->suspended_ports &= ~(1 << wIndex); |
| 642 | } else { |
| 643 | /* |
| 644 | * The resume has been signaling for less than |
| 645 | * 20ms. Report the port status as SUSPEND, |
| 646 | * let the usbcore check port status again |
| 647 | * and clear resume signaling later. |
| 648 | */ |
| 649 | status |= USB_PORT_STAT_SUSPEND; |
| 650 | } |
| 651 | } |
| 652 | if ((raw_port_status & PORT_PLS_MASK) == XDEV_U0 |
| 653 | && (raw_port_status & PORT_POWER) |
| 654 | && (bus_state->suspended_ports & (1 << wIndex))) { |
| 655 | bus_state->suspended_ports &= ~(1 << wIndex); |
| 656 | if (hcd->speed != HCD_USB3) |
| 657 | bus_state->port_c_suspend |= 1 << wIndex; |
| 658 | } |
| 659 | if (raw_port_status & PORT_CONNECT) { |
| 660 | status |= USB_PORT_STAT_CONNECTION; |
| 661 | status |= xhci_port_speed(raw_port_status); |
| 662 | } |
| 663 | if (raw_port_status & PORT_PE) |
| 664 | status |= USB_PORT_STAT_ENABLE; |
| 665 | if (raw_port_status & PORT_OC) |
| 666 | status |= USB_PORT_STAT_OVERCURRENT; |
| 667 | if (raw_port_status & PORT_RESET) |
| 668 | status |= USB_PORT_STAT_RESET; |
| 669 | if (raw_port_status & PORT_POWER) { |
| 670 | if (hcd->speed == HCD_USB3) |
| 671 | status |= USB_SS_PORT_STAT_POWER; |
| 672 | else |
| 673 | status |= USB_PORT_STAT_POWER; |
| 674 | } |
Sarah Sharp | 063ebeb | 2013-04-02 09:23:42 -0700 | [diff] [blame] | 675 | /* Update Port Link State */ |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 676 | if (hcd->speed == HCD_USB3) { |
Felipe Balbi | 9690858 | 2014-08-27 16:38:04 -0500 | [diff] [blame] | 677 | xhci_hub_report_usb3_link_state(xhci, &status, raw_port_status); |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 678 | /* |
| 679 | * Verify if all USB3 Ports Have entered U0 already. |
| 680 | * Delete Compliance Mode Timer if so. |
| 681 | */ |
| 682 | xhci_del_comp_mod_timer(xhci, raw_port_status, wIndex); |
Sarah Sharp | 063ebeb | 2013-04-02 09:23:42 -0700 | [diff] [blame] | 683 | } else { |
| 684 | xhci_hub_report_usb2_link_state(&status, raw_port_status); |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 685 | } |
| 686 | if (bus_state->port_c_suspend & (1 << wIndex)) |
| 687 | status |= 1 << USB_PORT_FEAT_C_SUSPEND; |
| 688 | |
| 689 | return status; |
| 690 | } |
| 691 | |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 692 | int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, |
| 693 | u16 wIndex, char *buf, u16 wLength) |
| 694 | { |
| 695 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 696 | int max_ports; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 697 | unsigned long flags; |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 698 | u32 temp, status; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 699 | int retval = 0; |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 700 | __le32 __iomem **port_array; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 701 | int slot_id; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 702 | struct xhci_bus_state *bus_state; |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 703 | u16 link_state = 0; |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 704 | u16 wake_mask = 0; |
Sarah Sharp | 797b0ca | 2011-11-10 16:02:13 -0800 | [diff] [blame] | 705 | u16 timeout = 0; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 706 | |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 707 | max_ports = xhci_get_ports(hcd, &port_array); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 708 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 709 | |
| 710 | spin_lock_irqsave(&xhci->lock, flags); |
| 711 | switch (typeReq) { |
| 712 | case GetHubStatus: |
| 713 | /* No power source, over-current reported per port */ |
| 714 | memset(buf, 0, 4); |
| 715 | break; |
| 716 | case GetHubDescriptor: |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 717 | /* Check to make sure userspace is asking for the USB 3.0 hub |
| 718 | * descriptor for the USB 3.0 roothub. If not, we stall the |
| 719 | * endpoint, like external hubs do. |
| 720 | */ |
| 721 | if (hcd->speed == HCD_USB3 && |
| 722 | (wLength < USB_DT_SS_HUB_SIZE || |
| 723 | wValue != (USB_DT_SS_HUB << 8))) { |
| 724 | xhci_dbg(xhci, "Wrong hub descriptor type for " |
| 725 | "USB 3.0 roothub.\n"); |
| 726 | goto error; |
| 727 | } |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 728 | xhci_hub_descriptor(hcd, xhci, |
| 729 | (struct usb_hub_descriptor *) buf); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 730 | break; |
Sarah Sharp | 48e8236 | 2011-10-06 11:54:23 -0700 | [diff] [blame] | 731 | case DeviceRequest | USB_REQ_GET_DESCRIPTOR: |
| 732 | if ((wValue & 0xff00) != (USB_DT_BOS << 8)) |
| 733 | goto error; |
| 734 | |
| 735 | if (hcd->speed != HCD_USB3) |
| 736 | goto error; |
| 737 | |
Sarah Sharp | af3a23e | 2012-06-25 08:24:30 -0700 | [diff] [blame] | 738 | /* Set the U1 and U2 exit latencies. */ |
Sarah Sharp | 48e8236 | 2011-10-06 11:54:23 -0700 | [diff] [blame] | 739 | memcpy(buf, &usb_bos_descriptor, |
| 740 | USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE); |
Sarah Sharp | 25cd288 | 2014-01-17 14:15:44 -0800 | [diff] [blame] | 741 | if ((xhci->quirks & XHCI_LPM_SUPPORT)) { |
| 742 | temp = readl(&xhci->cap_regs->hcs_params3); |
| 743 | buf[12] = HCS_U1_LATENCY(temp); |
| 744 | put_unaligned_le16(HCS_U2_LATENCY(temp), &buf[13]); |
| 745 | } |
Sarah Sharp | 48e8236 | 2011-10-06 11:54:23 -0700 | [diff] [blame] | 746 | |
Sarah Sharp | af3a23e | 2012-06-25 08:24:30 -0700 | [diff] [blame] | 747 | /* Indicate whether the host has LTM support. */ |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 748 | temp = readl(&xhci->cap_regs->hcc_params); |
Sarah Sharp | af3a23e | 2012-06-25 08:24:30 -0700 | [diff] [blame] | 749 | if (HCC_LTC(temp)) |
| 750 | buf[8] |= USB_LTM_SUPPORT; |
| 751 | |
Sarah Sharp | 48e8236 | 2011-10-06 11:54:23 -0700 | [diff] [blame] | 752 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 753 | return USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 754 | case GetPortStatus: |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 755 | if (!wIndex || wIndex > max_ports) |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 756 | goto error; |
| 757 | wIndex--; |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 758 | temp = readl(port_array[wIndex]); |
Sarah Sharp | f9de815 | 2010-10-29 14:37:23 -0700 | [diff] [blame] | 759 | if (temp == 0xffffffff) { |
| 760 | retval = -ENODEV; |
| 761 | break; |
| 762 | } |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 763 | status = xhci_get_port_status(hcd, bus_state, port_array, |
Sarah Sharp | 8b3d457 | 2013-08-20 08:12:12 -0700 | [diff] [blame] | 764 | wIndex, temp, flags); |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 765 | if (status == 0xffffffff) |
| 766 | goto error; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 767 | |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 768 | xhci_dbg(xhci, "get port status, actual port %d status = 0x%x\n", |
| 769 | wIndex, temp); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 770 | xhci_dbg(xhci, "Get port status returned 0x%x\n", status); |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 771 | |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 772 | put_unaligned(cpu_to_le32(status), (__le32 *) buf); |
| 773 | break; |
| 774 | case SetPortFeature: |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 775 | if (wValue == USB_PORT_FEAT_LINK_STATE) |
| 776 | link_state = (wIndex & 0xff00) >> 3; |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 777 | if (wValue == USB_PORT_FEAT_REMOTE_WAKE_MASK) |
| 778 | wake_mask = wIndex & 0xff00; |
Sarah Sharp | 797b0ca | 2011-11-10 16:02:13 -0800 | [diff] [blame] | 779 | /* The MSB of wIndex is the U1/U2 timeout */ |
| 780 | timeout = (wIndex & 0xff00) >> 8; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 781 | wIndex &= 0xff; |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 782 | if (!wIndex || wIndex > max_ports) |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 783 | goto error; |
| 784 | wIndex--; |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 785 | temp = readl(port_array[wIndex]); |
Sarah Sharp | f9de815 | 2010-10-29 14:37:23 -0700 | [diff] [blame] | 786 | if (temp == 0xffffffff) { |
| 787 | retval = -ENODEV; |
| 788 | break; |
| 789 | } |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 790 | temp = xhci_port_state_to_neutral(temp); |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 791 | /* FIXME: What new port features do we need to support? */ |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 792 | switch (wValue) { |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 793 | case USB_PORT_FEAT_SUSPEND: |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 794 | temp = readl(port_array[wIndex]); |
Andiry Xu | 65580b43 | 2011-09-23 14:19:52 -0700 | [diff] [blame] | 795 | if ((temp & PORT_PLS_MASK) != XDEV_U0) { |
| 796 | /* Resume the port to U0 first */ |
| 797 | xhci_set_link_state(xhci, port_array, wIndex, |
| 798 | XDEV_U0); |
| 799 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 800 | msleep(10); |
| 801 | spin_lock_irqsave(&xhci->lock, flags); |
| 802 | } |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 803 | /* In spec software should not attempt to suspend |
| 804 | * a port unless the port reports that it is in the |
| 805 | * enabled (PED = ‘1’,PLS < ‘3’) state. |
| 806 | */ |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 807 | temp = readl(port_array[wIndex]); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 808 | if ((temp & PORT_PE) == 0 || (temp & PORT_RESET) |
| 809 | || (temp & PORT_PLS_MASK) >= XDEV_U3) { |
| 810 | xhci_warn(xhci, "USB core suspending device " |
| 811 | "not in U0/U1/U2.\n"); |
| 812 | goto error; |
| 813 | } |
| 814 | |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 815 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
| 816 | wIndex + 1); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 817 | if (!slot_id) { |
| 818 | xhci_warn(xhci, "slot_id is zero\n"); |
| 819 | goto error; |
| 820 | } |
| 821 | /* unlock to execute stop endpoint commands */ |
| 822 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 823 | xhci_stop_device(xhci, slot_id, 1); |
| 824 | spin_lock_irqsave(&xhci->lock, flags); |
| 825 | |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 826 | xhci_set_link_state(xhci, port_array, wIndex, XDEV_U3); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 827 | |
| 828 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 829 | msleep(10); /* wait device to enter */ |
| 830 | spin_lock_irqsave(&xhci->lock, flags); |
| 831 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 832 | temp = readl(port_array[wIndex]); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 833 | bus_state->suspended_ports |= 1 << wIndex; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 834 | break; |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 835 | case USB_PORT_FEAT_LINK_STATE: |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 836 | temp = readl(port_array[wIndex]); |
Sarah Sharp | 41e7e05 | 2012-11-14 16:42:32 -0800 | [diff] [blame] | 837 | |
| 838 | /* Disable port */ |
| 839 | if (link_state == USB_SS_PORT_LS_SS_DISABLED) { |
| 840 | xhci_dbg(xhci, "Disable port %d\n", wIndex); |
| 841 | temp = xhci_port_state_to_neutral(temp); |
| 842 | /* |
| 843 | * Clear all change bits, so that we get a new |
| 844 | * connection event. |
| 845 | */ |
| 846 | temp |= PORT_CSC | PORT_PEC | PORT_WRC | |
| 847 | PORT_OCC | PORT_RC | PORT_PLC | |
| 848 | PORT_CEC; |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 849 | writel(temp | PORT_PE, port_array[wIndex]); |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 850 | temp = readl(port_array[wIndex]); |
Sarah Sharp | 41e7e05 | 2012-11-14 16:42:32 -0800 | [diff] [blame] | 851 | break; |
| 852 | } |
| 853 | |
| 854 | /* Put link in RxDetect (enable port) */ |
| 855 | if (link_state == USB_SS_PORT_LS_RX_DETECT) { |
| 856 | xhci_dbg(xhci, "Enable port %d\n", wIndex); |
| 857 | xhci_set_link_state(xhci, port_array, wIndex, |
| 858 | link_state); |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 859 | temp = readl(port_array[wIndex]); |
Sarah Sharp | 41e7e05 | 2012-11-14 16:42:32 -0800 | [diff] [blame] | 860 | break; |
| 861 | } |
| 862 | |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 863 | /* Software should not attempt to set |
Sarah Sharp | 41e7e05 | 2012-11-14 16:42:32 -0800 | [diff] [blame] | 864 | * port link state above '3' (U3) and the port |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 865 | * must be enabled. |
| 866 | */ |
| 867 | if ((temp & PORT_PE) == 0 || |
Sarah Sharp | 41e7e05 | 2012-11-14 16:42:32 -0800 | [diff] [blame] | 868 | (link_state > USB_SS_PORT_LS_U3)) { |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 869 | xhci_warn(xhci, "Cannot set link state.\n"); |
| 870 | goto error; |
| 871 | } |
| 872 | |
| 873 | if (link_state == USB_SS_PORT_LS_U3) { |
| 874 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
| 875 | wIndex + 1); |
| 876 | if (slot_id) { |
| 877 | /* unlock to execute stop endpoint |
| 878 | * commands */ |
| 879 | spin_unlock_irqrestore(&xhci->lock, |
| 880 | flags); |
| 881 | xhci_stop_device(xhci, slot_id, 1); |
| 882 | spin_lock_irqsave(&xhci->lock, flags); |
| 883 | } |
| 884 | } |
| 885 | |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 886 | xhci_set_link_state(xhci, port_array, wIndex, |
| 887 | link_state); |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 888 | |
| 889 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 890 | msleep(20); /* wait device to enter */ |
| 891 | spin_lock_irqsave(&xhci->lock, flags); |
| 892 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 893 | temp = readl(port_array[wIndex]); |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 894 | if (link_state == USB_SS_PORT_LS_U3) |
| 895 | bus_state->suspended_ports |= 1 << wIndex; |
| 896 | break; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 897 | case USB_PORT_FEAT_POWER: |
| 898 | /* |
| 899 | * Turn on ports, even if there isn't per-port switching. |
| 900 | * HC will report connect events even before this is set. |
Petr Mladek | 37ebb54 | 2014-09-19 17:32:23 +0200 | [diff] [blame] | 901 | * However, hub_wq will ignore the roothub events until |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 902 | * the roothub is registered. |
| 903 | */ |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 904 | writel(temp | PORT_POWER, port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 905 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 906 | temp = readl(port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 907 | xhci_dbg(xhci, "set port power, actual port %d status = 0x%x\n", wIndex, temp); |
Lan Tianyu | f7ac778 | 2012-09-05 13:44:36 +0800 | [diff] [blame] | 908 | |
Lan Tianyu | 170ed80 | 2012-10-15 15:38:34 +0800 | [diff] [blame] | 909 | spin_unlock_irqrestore(&xhci->lock, flags); |
Lan Tianyu | f7ac778 | 2012-09-05 13:44:36 +0800 | [diff] [blame] | 910 | temp = usb_acpi_power_manageable(hcd->self.root_hub, |
| 911 | wIndex); |
| 912 | if (temp) |
| 913 | usb_acpi_set_power_state(hcd->self.root_hub, |
| 914 | wIndex, true); |
Lan Tianyu | 170ed80 | 2012-10-15 15:38:34 +0800 | [diff] [blame] | 915 | spin_lock_irqsave(&xhci->lock, flags); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 916 | break; |
| 917 | case USB_PORT_FEAT_RESET: |
| 918 | temp = (temp | PORT_RESET); |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 919 | writel(temp, port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 920 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 921 | temp = readl(port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 922 | xhci_dbg(xhci, "set port reset, actual port %d status = 0x%x\n", wIndex, temp); |
| 923 | break; |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 924 | case USB_PORT_FEAT_REMOTE_WAKE_MASK: |
| 925 | xhci_set_remote_wake_mask(xhci, port_array, |
| 926 | wIndex, wake_mask); |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 927 | temp = readl(port_array[wIndex]); |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 928 | xhci_dbg(xhci, "set port remote wake mask, " |
| 929 | "actual port %d status = 0x%x\n", |
| 930 | wIndex, temp); |
| 931 | break; |
Andiry Xu | a11496e | 2011-04-27 18:07:29 +0800 | [diff] [blame] | 932 | case USB_PORT_FEAT_BH_PORT_RESET: |
| 933 | temp |= PORT_WR; |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 934 | writel(temp, port_array[wIndex]); |
Andiry Xu | a11496e | 2011-04-27 18:07:29 +0800 | [diff] [blame] | 935 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 936 | temp = readl(port_array[wIndex]); |
Andiry Xu | a11496e | 2011-04-27 18:07:29 +0800 | [diff] [blame] | 937 | break; |
Sarah Sharp | 797b0ca | 2011-11-10 16:02:13 -0800 | [diff] [blame] | 938 | case USB_PORT_FEAT_U1_TIMEOUT: |
| 939 | if (hcd->speed != HCD_USB3) |
| 940 | goto error; |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 941 | temp = readl(port_array[wIndex] + PORTPMSC); |
Sarah Sharp | 797b0ca | 2011-11-10 16:02:13 -0800 | [diff] [blame] | 942 | temp &= ~PORT_U1_TIMEOUT_MASK; |
| 943 | temp |= PORT_U1_TIMEOUT(timeout); |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 944 | writel(temp, port_array[wIndex] + PORTPMSC); |
Sarah Sharp | 797b0ca | 2011-11-10 16:02:13 -0800 | [diff] [blame] | 945 | break; |
| 946 | case USB_PORT_FEAT_U2_TIMEOUT: |
| 947 | if (hcd->speed != HCD_USB3) |
| 948 | goto error; |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 949 | temp = readl(port_array[wIndex] + PORTPMSC); |
Sarah Sharp | 797b0ca | 2011-11-10 16:02:13 -0800 | [diff] [blame] | 950 | temp &= ~PORT_U2_TIMEOUT_MASK; |
| 951 | temp |= PORT_U2_TIMEOUT(timeout); |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 952 | writel(temp, port_array[wIndex] + PORTPMSC); |
Sarah Sharp | 797b0ca | 2011-11-10 16:02:13 -0800 | [diff] [blame] | 953 | break; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 954 | default: |
| 955 | goto error; |
| 956 | } |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 957 | /* unblock any posted writes */ |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 958 | temp = readl(port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 959 | break; |
| 960 | case ClearPortFeature: |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 961 | if (!wIndex || wIndex > max_ports) |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 962 | goto error; |
| 963 | wIndex--; |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 964 | temp = readl(port_array[wIndex]); |
Sarah Sharp | f9de815 | 2010-10-29 14:37:23 -0700 | [diff] [blame] | 965 | if (temp == 0xffffffff) { |
| 966 | retval = -ENODEV; |
| 967 | break; |
| 968 | } |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 969 | /* FIXME: What new port features do we need to support? */ |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 970 | temp = xhci_port_state_to_neutral(temp); |
| 971 | switch (wValue) { |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 972 | case USB_PORT_FEAT_SUSPEND: |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 973 | temp = readl(port_array[wIndex]); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 974 | xhci_dbg(xhci, "clear USB_PORT_FEAT_SUSPEND\n"); |
| 975 | xhci_dbg(xhci, "PORTSC %04x\n", temp); |
| 976 | if (temp & PORT_RESET) |
| 977 | goto error; |
Andiry Xu | 5ac04bf | 2011-08-03 16:46:48 +0800 | [diff] [blame] | 978 | if ((temp & PORT_PLS_MASK) == XDEV_U3) { |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 979 | if ((temp & PORT_PE) == 0) |
| 980 | goto error; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 981 | |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 982 | xhci_set_link_state(xhci, port_array, wIndex, |
| 983 | XDEV_RESUME); |
| 984 | spin_unlock_irqrestore(&xhci->lock, flags); |
Andiry Xu | a711423 | 2011-04-27 18:07:50 +0800 | [diff] [blame] | 985 | msleep(20); |
| 986 | spin_lock_irqsave(&xhci->lock, flags); |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 987 | xhci_set_link_state(xhci, port_array, wIndex, |
| 988 | XDEV_U0); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 989 | } |
Andiry Xu | a711423 | 2011-04-27 18:07:50 +0800 | [diff] [blame] | 990 | bus_state->port_c_suspend |= 1 << wIndex; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 991 | |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 992 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
| 993 | wIndex + 1); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 994 | if (!slot_id) { |
| 995 | xhci_dbg(xhci, "slot_id is zero\n"); |
| 996 | goto error; |
| 997 | } |
| 998 | xhci_ring_device(xhci, slot_id); |
| 999 | break; |
| 1000 | case USB_PORT_FEAT_C_SUSPEND: |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1001 | bus_state->port_c_suspend &= ~(1 << wIndex); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1002 | case USB_PORT_FEAT_C_RESET: |
Andiry Xu | a11496e | 2011-04-27 18:07:29 +0800 | [diff] [blame] | 1003 | case USB_PORT_FEAT_C_BH_PORT_RESET: |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1004 | case USB_PORT_FEAT_C_CONNECTION: |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1005 | case USB_PORT_FEAT_C_OVER_CURRENT: |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 1006 | case USB_PORT_FEAT_C_ENABLE: |
Andiry Xu | 85387c0 | 2011-04-27 18:07:35 +0800 | [diff] [blame] | 1007 | case USB_PORT_FEAT_C_PORT_LINK_STATE: |
Sarah Sharp | 34fb562 | 2009-12-09 15:59:08 -0800 | [diff] [blame] | 1008 | xhci_clear_port_change_bit(xhci, wValue, wIndex, |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 1009 | port_array[wIndex], temp); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1010 | break; |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 1011 | case USB_PORT_FEAT_ENABLE: |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 1012 | xhci_disable_port(hcd, xhci, wIndex, |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 1013 | port_array[wIndex], temp); |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 1014 | break; |
Lan Tianyu | 693d8eb | 2012-09-05 13:44:35 +0800 | [diff] [blame] | 1015 | case USB_PORT_FEAT_POWER: |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 1016 | writel(temp & ~PORT_POWER, port_array[wIndex]); |
Lan Tianyu | f7ac778 | 2012-09-05 13:44:36 +0800 | [diff] [blame] | 1017 | |
Lan Tianyu | 170ed80 | 2012-10-15 15:38:34 +0800 | [diff] [blame] | 1018 | spin_unlock_irqrestore(&xhci->lock, flags); |
Lan Tianyu | f7ac778 | 2012-09-05 13:44:36 +0800 | [diff] [blame] | 1019 | temp = usb_acpi_power_manageable(hcd->self.root_hub, |
| 1020 | wIndex); |
| 1021 | if (temp) |
| 1022 | usb_acpi_set_power_state(hcd->self.root_hub, |
| 1023 | wIndex, false); |
Lan Tianyu | 170ed80 | 2012-10-15 15:38:34 +0800 | [diff] [blame] | 1024 | spin_lock_irqsave(&xhci->lock, flags); |
Lan Tianyu | 693d8eb | 2012-09-05 13:44:35 +0800 | [diff] [blame] | 1025 | break; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1026 | default: |
| 1027 | goto error; |
| 1028 | } |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1029 | break; |
| 1030 | default: |
| 1031 | error: |
| 1032 | /* "stall" on error */ |
| 1033 | retval = -EPIPE; |
| 1034 | } |
| 1035 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1036 | return retval; |
| 1037 | } |
| 1038 | |
| 1039 | /* |
| 1040 | * Returns 0 if the status hasn't changed, or the number of bytes in buf. |
| 1041 | * Ports are 0-indexed from the HCD point of view, |
| 1042 | * and 1-indexed from the USB core pointer of view. |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1043 | * |
| 1044 | * Note that the status change bits will be cleared as soon as a port status |
| 1045 | * change event is generated, so we use the saved status from that event. |
| 1046 | */ |
| 1047 | int xhci_hub_status_data(struct usb_hcd *hcd, char *buf) |
| 1048 | { |
| 1049 | unsigned long flags; |
| 1050 | u32 temp, status; |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 1051 | u32 mask; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1052 | int i, retval; |
| 1053 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 1054 | int max_ports; |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 1055 | __le32 __iomem **port_array; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1056 | struct xhci_bus_state *bus_state; |
Sarah Sharp | c52804a | 2012-11-27 12:30:23 -0800 | [diff] [blame] | 1057 | bool reset_change = false; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1058 | |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 1059 | max_ports = xhci_get_ports(hcd, &port_array); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1060 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1061 | |
| 1062 | /* Initial status is no changes */ |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 1063 | retval = (max_ports + 8) / 8; |
William Gulland | 419a8e81 | 2010-05-12 10:20:34 -0700 | [diff] [blame] | 1064 | memset(buf, 0, retval); |
Andiry Xu | f370b99 | 2012-04-14 02:54:30 +0800 | [diff] [blame] | 1065 | |
| 1066 | /* |
| 1067 | * Inform the usbcore about resume-in-progress by returning |
| 1068 | * a non-zero value even if there are no status changes. |
| 1069 | */ |
| 1070 | status = bus_state->resuming_ports; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1071 | |
Greg KH | 44f4c3e | 2011-09-19 16:05:11 -0700 | [diff] [blame] | 1072 | mask = PORT_CSC | PORT_PEC | PORT_OCC | PORT_PLC | PORT_WRC; |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 1073 | |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1074 | spin_lock_irqsave(&xhci->lock, flags); |
| 1075 | /* For each port, did anything change? If so, set that bit in buf. */ |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 1076 | for (i = 0; i < max_ports; i++) { |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 1077 | temp = readl(port_array[i]); |
Sarah Sharp | f9de815 | 2010-10-29 14:37:23 -0700 | [diff] [blame] | 1078 | if (temp == 0xffffffff) { |
| 1079 | retval = -ENODEV; |
| 1080 | break; |
| 1081 | } |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 1082 | if ((temp & mask) != 0 || |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1083 | (bus_state->port_c_suspend & 1 << i) || |
| 1084 | (bus_state->resume_done[i] && time_after_eq( |
| 1085 | jiffies, bus_state->resume_done[i]))) { |
William Gulland | 419a8e81 | 2010-05-12 10:20:34 -0700 | [diff] [blame] | 1086 | buf[(i + 1) / 8] |= 1 << (i + 1) % 8; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1087 | status = 1; |
| 1088 | } |
Sarah Sharp | c52804a | 2012-11-27 12:30:23 -0800 | [diff] [blame] | 1089 | if ((temp & PORT_RC)) |
| 1090 | reset_change = true; |
| 1091 | } |
| 1092 | if (!status && !reset_change) { |
| 1093 | xhci_dbg(xhci, "%s: stopping port polling.\n", __func__); |
| 1094 | clear_bit(HCD_FLAG_POLL_RH, &hcd->flags); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1095 | } |
| 1096 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1097 | return status ? retval : 0; |
| 1098 | } |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1099 | |
| 1100 | #ifdef CONFIG_PM |
| 1101 | |
| 1102 | int xhci_bus_suspend(struct usb_hcd *hcd) |
| 1103 | { |
| 1104 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 1105 | int max_ports, port_index; |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 1106 | __le32 __iomem **port_array; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1107 | struct xhci_bus_state *bus_state; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1108 | unsigned long flags; |
| 1109 | |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 1110 | max_ports = xhci_get_ports(hcd, &port_array); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1111 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1112 | |
| 1113 | spin_lock_irqsave(&xhci->lock, flags); |
| 1114 | |
| 1115 | if (hcd->self.root_hub->do_remote_wakeup) { |
Andiry Xu | f370b99 | 2012-04-14 02:54:30 +0800 | [diff] [blame] | 1116 | if (bus_state->resuming_ports) { |
| 1117 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1118 | xhci_dbg(xhci, "suspend failed because " |
| 1119 | "a port is resuming\n"); |
| 1120 | return -EBUSY; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1121 | } |
| 1122 | } |
| 1123 | |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 1124 | port_index = max_ports; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1125 | bus_state->bus_suspended = 0; |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 1126 | while (port_index--) { |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1127 | /* suspend the port if the port is not suspended */ |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1128 | u32 t1, t2; |
| 1129 | int slot_id; |
| 1130 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 1131 | t1 = readl(port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1132 | t2 = xhci_port_state_to_neutral(t1); |
| 1133 | |
| 1134 | if ((t1 & PORT_PE) && !(t1 & PORT_PLS_MASK)) { |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 1135 | xhci_dbg(xhci, "port %d not suspended\n", port_index); |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 1136 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 1137 | port_index + 1); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1138 | if (slot_id) { |
| 1139 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1140 | xhci_stop_device(xhci, slot_id, 1); |
| 1141 | spin_lock_irqsave(&xhci->lock, flags); |
| 1142 | } |
| 1143 | t2 &= ~PORT_PLS_MASK; |
| 1144 | t2 |= PORT_LINK_STROBE | XDEV_U3; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1145 | set_bit(port_index, &bus_state->bus_suspended); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1146 | } |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 1147 | /* USB core sets remote wake mask for USB 3.0 hubs, |
Alan Stern | 84ebc10 | 2013-03-27 16:14:46 -0400 | [diff] [blame] | 1148 | * including the USB 3.0 roothub, but only if CONFIG_PM_RUNTIME |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 1149 | * is enabled, so also enable remote wake here. |
| 1150 | */ |
Lu Baolu | 9b41ebd | 2014-11-18 11:27:13 +0200 | [diff] [blame^] | 1151 | if (hcd->self.root_hub->do_remote_wakeup) { |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1152 | if (t1 & PORT_CONNECT) { |
| 1153 | t2 |= PORT_WKOC_E | PORT_WKDISC_E; |
| 1154 | t2 &= ~PORT_WKCONN_E; |
| 1155 | } else { |
| 1156 | t2 |= PORT_WKOC_E | PORT_WKCONN_E; |
| 1157 | t2 &= ~PORT_WKDISC_E; |
| 1158 | } |
| 1159 | } else |
| 1160 | t2 &= ~PORT_WAKE_BITS; |
| 1161 | |
| 1162 | t1 = xhci_port_state_to_neutral(t1); |
| 1163 | if (t1 != t2) |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 1164 | writel(t2, port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1165 | } |
| 1166 | hcd->state = HC_STATE_SUSPENDED; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1167 | bus_state->next_statechange = jiffies + msecs_to_jiffies(10); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1168 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1169 | return 0; |
| 1170 | } |
| 1171 | |
| 1172 | int xhci_bus_resume(struct usb_hcd *hcd) |
| 1173 | { |
| 1174 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 1175 | int max_ports, port_index; |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 1176 | __le32 __iomem **port_array; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1177 | struct xhci_bus_state *bus_state; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1178 | u32 temp; |
| 1179 | unsigned long flags; |
| 1180 | |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 1181 | max_ports = xhci_get_ports(hcd, &port_array); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1182 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1183 | |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1184 | if (time_before(jiffies, bus_state->next_statechange)) |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1185 | msleep(5); |
| 1186 | |
| 1187 | spin_lock_irqsave(&xhci->lock, flags); |
| 1188 | if (!HCD_HW_ACCESSIBLE(hcd)) { |
| 1189 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1190 | return -ESHUTDOWN; |
| 1191 | } |
| 1192 | |
| 1193 | /* delay the irqs */ |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 1194 | temp = readl(&xhci->op_regs->command); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1195 | temp &= ~CMD_EIE; |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 1196 | writel(temp, &xhci->op_regs->command); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1197 | |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 1198 | port_index = max_ports; |
| 1199 | while (port_index--) { |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1200 | /* Check whether need resume ports. If needed |
| 1201 | resume port and disable remote wakeup */ |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1202 | u32 temp; |
| 1203 | int slot_id; |
| 1204 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 1205 | temp = readl(port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1206 | if (DEV_SUPERSPEED(temp)) |
| 1207 | temp &= ~(PORT_RWC_BITS | PORT_CEC | PORT_WAKE_BITS); |
| 1208 | else |
| 1209 | temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1210 | if (test_bit(port_index, &bus_state->bus_suspended) && |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1211 | (temp & PORT_PLS_MASK)) { |
| 1212 | if (DEV_SUPERSPEED(temp)) { |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 1213 | xhci_set_link_state(xhci, port_array, |
| 1214 | port_index, XDEV_U0); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1215 | } else { |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 1216 | xhci_set_link_state(xhci, port_array, |
| 1217 | port_index, XDEV_RESUME); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1218 | |
| 1219 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1220 | msleep(20); |
| 1221 | spin_lock_irqsave(&xhci->lock, flags); |
| 1222 | |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 1223 | xhci_set_link_state(xhci, port_array, |
| 1224 | port_index, XDEV_U0); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1225 | } |
Andiry Xu | 4f0871a | 2011-04-19 17:17:39 +0800 | [diff] [blame] | 1226 | /* wait for the port to enter U0 and report port link |
| 1227 | * state change. |
| 1228 | */ |
| 1229 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1230 | msleep(20); |
| 1231 | spin_lock_irqsave(&xhci->lock, flags); |
| 1232 | |
| 1233 | /* Clear PLC */ |
Andiry Xu | d2f52c9 | 2011-09-23 14:19:49 -0700 | [diff] [blame] | 1234 | xhci_test_and_clear_bit(xhci, port_array, port_index, |
| 1235 | PORT_PLC); |
Andiry Xu | 4f0871a | 2011-04-19 17:17:39 +0800 | [diff] [blame] | 1236 | |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 1237 | slot_id = xhci_find_slot_id_by_port(hcd, |
| 1238 | xhci, port_index + 1); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1239 | if (slot_id) |
| 1240 | xhci_ring_device(xhci, slot_id); |
| 1241 | } else |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 1242 | writel(temp, port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1243 | } |
| 1244 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 1245 | (void) readl(&xhci->op_regs->command); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1246 | |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1247 | bus_state->next_statechange = jiffies + msecs_to_jiffies(5); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1248 | /* re-enable irqs */ |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 1249 | temp = readl(&xhci->op_regs->command); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1250 | temp |= CMD_EIE; |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 1251 | writel(temp, &xhci->op_regs->command); |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 1252 | temp = readl(&xhci->op_regs->command); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1253 | |
| 1254 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1255 | return 0; |
| 1256 | } |
| 1257 | |
Sarah Sharp | 436a389 | 2010-10-15 14:59:15 -0700 | [diff] [blame] | 1258 | #endif /* CONFIG_PM */ |