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 | |
Paul Gortmaker | 4bcbcc9 | 2011-07-18 14:42:00 -0400 | [diff] [blame] | 23 | #include <linux/gfp.h> |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 24 | #include <asm/unaligned.h> |
| 25 | |
| 26 | #include "xhci.h" |
Xenia Ragiadakou | 4bdfe4c | 2013-08-06 07:52:45 +0300 | [diff] [blame] | 27 | #include "xhci-trace.h" |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 28 | |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 29 | #define PORT_WAKE_BITS (PORT_WKOC_E | PORT_WKDISC_E | PORT_WKCONN_E) |
| 30 | #define PORT_RWC_BITS (PORT_CSC | PORT_PEC | PORT_WRC | PORT_OCC | \ |
| 31 | PORT_RC | PORT_PLC | PORT_PE) |
| 32 | |
Sebastian Andrzej Siewior | 3415fc9 | 2012-08-22 15:12:06 +0200 | [diff] [blame] | 33 | /* USB 3.0 BOS descriptor and a capability descriptor, combined */ |
Sarah Sharp | 48e8236 | 2011-10-06 11:54:23 -0700 | [diff] [blame] | 34 | static u8 usb_bos_descriptor [] = { |
| 35 | USB_DT_BOS_SIZE, /* __u8 bLength, 5 bytes */ |
| 36 | USB_DT_BOS, /* __u8 bDescriptorType */ |
| 37 | 0x0F, 0x00, /* __le16 wTotalLength, 15 bytes */ |
| 38 | 0x1, /* __u8 bNumDeviceCaps */ |
| 39 | /* First device capability */ |
| 40 | USB_DT_USB_SS_CAP_SIZE, /* __u8 bLength, 10 bytes */ |
| 41 | USB_DT_DEVICE_CAPABILITY, /* Device Capability */ |
| 42 | USB_SS_CAP_TYPE, /* bDevCapabilityType, SUPERSPEED_USB */ |
| 43 | 0x00, /* bmAttributes, LTM off by default */ |
| 44 | USB_5GBPS_OPERATION, 0x00, /* wSpeedsSupported, 5Gbps only */ |
| 45 | 0x03, /* bFunctionalitySupport, |
| 46 | USB 3.0 speed only */ |
| 47 | 0x00, /* bU1DevExitLat, set later. */ |
| 48 | 0x00, 0x00 /* __le16 bU2DevExitLat, set later. */ |
| 49 | }; |
| 50 | |
| 51 | |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 52 | static void xhci_common_hub_descriptor(struct xhci_hcd *xhci, |
| 53 | struct usb_hub_descriptor *desc, int ports) |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 54 | { |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 55 | u16 temp; |
| 56 | |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 57 | desc->bPwrOn2PwrGood = 10; /* xhci section 5.4.9 says 20ms max */ |
| 58 | desc->bHubContrCurrent = 0; |
| 59 | |
| 60 | desc->bNbrPorts = ports; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 61 | temp = 0; |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 62 | /* Bits 1:0 - support per-port power switching, or power always on */ |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 63 | if (HCC_PPC(xhci->hcc_params)) |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 64 | temp |= HUB_CHAR_INDV_PORT_LPSM; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 65 | else |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 66 | temp |= HUB_CHAR_NO_LPSM; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 67 | /* Bit 2 - root hubs are not part of a compound device */ |
| 68 | /* Bits 4:3 - individual port over current protection */ |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 69 | temp |= HUB_CHAR_INDV_PORT_OCPM; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 70 | /* Bits 6:5 - no TTs in root ports */ |
| 71 | /* Bit 7 - no port indicators */ |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 72 | desc->wHubCharacteristics = cpu_to_le16(temp); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 73 | } |
| 74 | |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 75 | /* Fill in the USB 2.0 roothub descriptor */ |
| 76 | static void xhci_usb2_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
| 77 | struct usb_hub_descriptor *desc) |
| 78 | { |
| 79 | int ports; |
| 80 | u16 temp; |
| 81 | __u8 port_removable[(USB_MAXCHILDREN + 1 + 7) / 8]; |
| 82 | u32 portsc; |
| 83 | unsigned int i; |
| 84 | |
| 85 | ports = xhci->num_usb2_ports; |
| 86 | |
| 87 | xhci_common_hub_descriptor(xhci, desc, ports); |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 88 | desc->bDescriptorType = USB_DT_HUB; |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 89 | temp = 1 + (ports / 8); |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 90 | desc->bDescLength = USB_DT_HUB_NONVAR_SIZE + 2 * temp; |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 91 | |
| 92 | /* The Device Removable bits are reported on a byte granularity. |
| 93 | * If the port doesn't exist within that byte, the bit is set to 0. |
| 94 | */ |
| 95 | memset(port_removable, 0, sizeof(port_removable)); |
| 96 | for (i = 0; i < ports; i++) { |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 97 | portsc = readl(xhci->usb2_ports[i]); |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 98 | /* If a device is removable, PORTSC reports a 0, same as in the |
| 99 | * hub descriptor DeviceRemovable bits. |
| 100 | */ |
| 101 | if (portsc & PORT_DEV_REMOVE) |
| 102 | /* This math is hairy because bit 0 of DeviceRemovable |
| 103 | * is reserved, and bit 1 is for port 1, etc. |
| 104 | */ |
| 105 | port_removable[(i + 1) / 8] |= 1 << ((i + 1) % 8); |
| 106 | } |
| 107 | |
| 108 | /* ch11.h defines a hub descriptor that has room for USB_MAXCHILDREN |
| 109 | * ports on it. The USB 2.0 specification says that there are two |
| 110 | * variable length fields at the end of the hub descriptor: |
| 111 | * DeviceRemovable and PortPwrCtrlMask. But since we can have less than |
| 112 | * USB_MAXCHILDREN ports, we may need to use the DeviceRemovable array |
| 113 | * to set PortPwrCtrlMask bits. PortPwrCtrlMask must always be set to |
| 114 | * 0xFF, so we initialize the both arrays (DeviceRemovable and |
| 115 | * PortPwrCtrlMask) to 0xFF. Then we set the DeviceRemovable for each |
| 116 | * set of ports that actually exist. |
| 117 | */ |
| 118 | memset(desc->u.hs.DeviceRemovable, 0xff, |
| 119 | sizeof(desc->u.hs.DeviceRemovable)); |
| 120 | memset(desc->u.hs.PortPwrCtrlMask, 0xff, |
| 121 | sizeof(desc->u.hs.PortPwrCtrlMask)); |
| 122 | |
| 123 | for (i = 0; i < (ports + 1 + 7) / 8; i++) |
| 124 | memset(&desc->u.hs.DeviceRemovable[i], port_removable[i], |
| 125 | sizeof(__u8)); |
| 126 | } |
| 127 | |
| 128 | /* Fill in the USB 3.0 roothub descriptor */ |
| 129 | static void xhci_usb3_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
| 130 | struct usb_hub_descriptor *desc) |
| 131 | { |
| 132 | int ports; |
| 133 | u16 port_removable; |
| 134 | u32 portsc; |
| 135 | unsigned int i; |
| 136 | |
| 137 | ports = xhci->num_usb3_ports; |
| 138 | xhci_common_hub_descriptor(xhci, desc, ports); |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 139 | desc->bDescriptorType = USB_DT_SS_HUB; |
| 140 | desc->bDescLength = USB_DT_SS_HUB_SIZE; |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 141 | |
| 142 | /* header decode latency should be zero for roothubs, |
| 143 | * see section 4.23.5.2. |
| 144 | */ |
| 145 | desc->u.ss.bHubHdrDecLat = 0; |
| 146 | desc->u.ss.wHubDelay = 0; |
| 147 | |
| 148 | port_removable = 0; |
| 149 | /* bit 0 is reserved, bit 1 is for port 1, etc. */ |
| 150 | for (i = 0; i < ports; i++) { |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 151 | portsc = readl(xhci->usb3_ports[i]); |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 152 | if (portsc & PORT_DEV_REMOVE) |
| 153 | port_removable |= 1 << (i + 1); |
| 154 | } |
Lan Tianyu | 27c411c | 2012-10-15 15:38:35 +0800 | [diff] [blame] | 155 | |
| 156 | desc->u.ss.DeviceRemovable = cpu_to_le16(port_removable); |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 157 | } |
| 158 | |
| 159 | static void xhci_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
| 160 | struct usb_hub_descriptor *desc) |
| 161 | { |
| 162 | |
| 163 | if (hcd->speed == HCD_USB3) |
| 164 | xhci_usb3_hub_descriptor(hcd, xhci, desc); |
| 165 | else |
| 166 | xhci_usb2_hub_descriptor(hcd, xhci, desc); |
| 167 | |
| 168 | } |
| 169 | |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 170 | static unsigned int xhci_port_speed(unsigned int port_status) |
| 171 | { |
| 172 | if (DEV_LOWSPEED(port_status)) |
Alan Stern | 288ead4 | 2010-03-04 11:32:30 -0500 | [diff] [blame] | 173 | return USB_PORT_STAT_LOW_SPEED; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 174 | if (DEV_HIGHSPEED(port_status)) |
Alan Stern | 288ead4 | 2010-03-04 11:32:30 -0500 | [diff] [blame] | 175 | return USB_PORT_STAT_HIGH_SPEED; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 176 | /* |
| 177 | * FIXME: Yes, we should check for full speed, but the core uses that as |
| 178 | * 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] | 179 | * USB_PORT_STAT_*_SPEED is used). |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 180 | */ |
| 181 | return 0; |
| 182 | } |
| 183 | |
| 184 | /* |
| 185 | * These bits are Read Only (RO) and should be saved and written to the |
| 186 | * registers: 0, 3, 10:13, 30 |
| 187 | * connect status, over-current status, port speed, and device removable. |
| 188 | * connect status and port speed are also sticky - meaning they're in |
| 189 | * the AUX well and they aren't changed by a hot, warm, or cold reset. |
| 190 | */ |
| 191 | #define XHCI_PORT_RO ((1<<0) | (1<<3) | (0xf<<10) | (1<<30)) |
| 192 | /* |
| 193 | * These bits are RW; writing a 0 clears the bit, writing a 1 sets the bit: |
| 194 | * bits 5:8, 9, 14:15, 25:27 |
| 195 | * link state, port power, port indicator state, "wake on" enable state |
| 196 | */ |
| 197 | #define XHCI_PORT_RWS ((0xf<<5) | (1<<9) | (0x3<<14) | (0x7<<25)) |
| 198 | /* |
| 199 | * These bits are RW; writing a 1 sets the bit, writing a 0 has no effect: |
| 200 | * bit 4 (port reset) |
| 201 | */ |
| 202 | #define XHCI_PORT_RW1S ((1<<4)) |
| 203 | /* |
| 204 | * These bits are RW; writing a 1 clears the bit, writing a 0 has no effect: |
| 205 | * bits 1, 17, 18, 19, 20, 21, 22, 23 |
| 206 | * port enable/disable, and |
| 207 | * change bits: connect, PED, warm port reset changed (reserved zero for USB 2.0 ports), |
| 208 | * over-current, reset, link state, and L1 change |
| 209 | */ |
| 210 | #define XHCI_PORT_RW1CS ((1<<1) | (0x7f<<17)) |
| 211 | /* |
| 212 | * Bit 16 is RW, and writing a '1' to it causes the link state control to be |
| 213 | * latched in |
| 214 | */ |
| 215 | #define XHCI_PORT_RW ((1<<16)) |
| 216 | /* |
| 217 | * These bits are Reserved Zero (RsvdZ) and zero should be written to them: |
| 218 | * bits 2, 24, 28:31 |
| 219 | */ |
| 220 | #define XHCI_PORT_RZ ((1<<2) | (1<<24) | (0xf<<28)) |
| 221 | |
| 222 | /* |
| 223 | * Given a port state, this function returns a value that would result in the |
| 224 | * port being in the same state, if the value was written to the port status |
| 225 | * control register. |
| 226 | * Save Read Only (RO) bits and save read/write bits where |
| 227 | * writing a 0 clears the bit and writing a 1 sets the bit (RWS). |
| 228 | * For all other types (RW1S, RW1CS, RW, and RZ), writing a '0' has no effect. |
| 229 | */ |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 230 | u32 xhci_port_state_to_neutral(u32 state) |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 231 | { |
| 232 | /* Save read-only status and port state */ |
| 233 | return (state & XHCI_PORT_RO) | (state & XHCI_PORT_RWS); |
| 234 | } |
| 235 | |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 236 | /* |
| 237 | * find slot id based on port number. |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 238 | * @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] | 239 | */ |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 240 | int xhci_find_slot_id_by_port(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
| 241 | u16 port) |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 242 | { |
| 243 | int slot_id; |
| 244 | int i; |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 245 | enum usb_device_speed speed; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 246 | |
| 247 | slot_id = 0; |
| 248 | for (i = 0; i < MAX_HC_SLOTS; i++) { |
| 249 | if (!xhci->devs[i]) |
| 250 | continue; |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 251 | speed = xhci->devs[i]->udev->speed; |
| 252 | if (((speed == USB_SPEED_SUPER) == (hcd->speed == HCD_USB3)) |
Sarah Sharp | fe30182 | 2011-09-02 11:05:41 -0700 | [diff] [blame] | 253 | && xhci->devs[i]->fake_port == port) { |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 254 | slot_id = i; |
| 255 | break; |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | return slot_id; |
| 260 | } |
| 261 | |
| 262 | /* |
| 263 | * Stop device |
| 264 | * It issues stop endpoint command for EP 0 to 30. And wait the last command |
| 265 | * to complete. |
| 266 | * suspend will set to 1, if suspend bit need to set in command. |
| 267 | */ |
| 268 | static int xhci_stop_device(struct xhci_hcd *xhci, int slot_id, int suspend) |
| 269 | { |
| 270 | struct xhci_virt_device *virt_dev; |
| 271 | struct xhci_command *cmd; |
| 272 | unsigned long flags; |
| 273 | int timeleft; |
| 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--) { |
| 287 | if (virt_dev->eps[i].ring && virt_dev->eps[i].ring->dequeue) |
| 288 | xhci_queue_stop_endpoint(xhci, slot_id, i, suspend); |
| 289 | } |
Mathias Nyman | ec7e43e | 2013-08-30 18:25:49 +0300 | [diff] [blame] | 290 | cmd->command_trb = xhci_find_next_enqueue(xhci->cmd_ring); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 291 | list_add_tail(&cmd->cmd_list, &virt_dev->cmd_list); |
| 292 | xhci_queue_stop_endpoint(xhci, slot_id, 0, suspend); |
| 293 | xhci_ring_cmd_db(xhci); |
| 294 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 295 | |
| 296 | /* Wait for last stop endpoint command to finish */ |
| 297 | timeleft = wait_for_completion_interruptible_timeout( |
| 298 | cmd->completion, |
xiao jin | d194c03 | 2013-10-11 08:57:03 +0800 | [diff] [blame] | 299 | XHCI_CMD_DEFAULT_TIMEOUT); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 300 | if (timeleft <= 0) { |
| 301 | xhci_warn(xhci, "%s while waiting for stop endpoint command\n", |
| 302 | timeleft == 0 ? "Timeout" : "Signal"); |
| 303 | spin_lock_irqsave(&xhci->lock, flags); |
| 304 | /* The timeout might have raced with the event ring handler, so |
| 305 | * only delete from the list if the item isn't poisoned. |
| 306 | */ |
| 307 | if (cmd->cmd_list.next != LIST_POISON1) |
| 308 | list_del(&cmd->cmd_list); |
| 309 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 310 | ret = -ETIME; |
| 311 | goto command_cleanup; |
| 312 | } |
| 313 | |
| 314 | command_cleanup: |
| 315 | xhci_free_command(xhci, cmd); |
| 316 | return ret; |
| 317 | } |
| 318 | |
| 319 | /* |
| 320 | * Ring device, it rings the all doorbells unconditionally. |
| 321 | */ |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 322 | void xhci_ring_device(struct xhci_hcd *xhci, int slot_id) |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 323 | { |
| 324 | int i; |
| 325 | |
| 326 | for (i = 0; i < LAST_EP_INDEX + 1; i++) |
| 327 | if (xhci->devs[slot_id]->eps[i].ring && |
| 328 | xhci->devs[slot_id]->eps[i].ring->dequeue) |
| 329 | xhci_ring_ep_doorbell(xhci, slot_id, i, 0); |
| 330 | |
| 331 | return; |
| 332 | } |
| 333 | |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 334 | 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] | 335 | u16 wIndex, __le32 __iomem *addr, u32 port_status) |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 336 | { |
Sarah Sharp | 6dd0a3a7 | 2010-11-16 15:58:52 -0800 | [diff] [blame] | 337 | /* Don't allow the USB core to disable SuperSpeed ports. */ |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 338 | if (hcd->speed == HCD_USB3) { |
Sarah Sharp | 6dd0a3a7 | 2010-11-16 15:58:52 -0800 | [diff] [blame] | 339 | xhci_dbg(xhci, "Ignoring request to disable " |
| 340 | "SuperSpeed port.\n"); |
| 341 | return; |
| 342 | } |
| 343 | |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 344 | /* Write 1 to disable the port */ |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 345 | writel(port_status | PORT_PE, addr); |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 346 | port_status = readl(addr); |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 347 | xhci_dbg(xhci, "disable port, actual port %d status = 0x%x\n", |
| 348 | wIndex, port_status); |
| 349 | } |
| 350 | |
Sarah Sharp | 34fb562 | 2009-12-09 15:59:08 -0800 | [diff] [blame] | 351 | 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] | 352 | u16 wIndex, __le32 __iomem *addr, u32 port_status) |
Sarah Sharp | 34fb562 | 2009-12-09 15:59:08 -0800 | [diff] [blame] | 353 | { |
| 354 | char *port_change_bit; |
| 355 | u32 status; |
| 356 | |
| 357 | switch (wValue) { |
| 358 | case USB_PORT_FEAT_C_RESET: |
| 359 | status = PORT_RC; |
| 360 | port_change_bit = "reset"; |
| 361 | break; |
Andiry Xu | a11496e | 2011-04-27 18:07:29 +0800 | [diff] [blame] | 362 | case USB_PORT_FEAT_C_BH_PORT_RESET: |
| 363 | status = PORT_WRC; |
| 364 | port_change_bit = "warm(BH) reset"; |
| 365 | break; |
Sarah Sharp | 34fb562 | 2009-12-09 15:59:08 -0800 | [diff] [blame] | 366 | case USB_PORT_FEAT_C_CONNECTION: |
| 367 | status = PORT_CSC; |
| 368 | port_change_bit = "connect"; |
| 369 | break; |
| 370 | case USB_PORT_FEAT_C_OVER_CURRENT: |
| 371 | status = PORT_OCC; |
| 372 | port_change_bit = "over-current"; |
| 373 | break; |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 374 | case USB_PORT_FEAT_C_ENABLE: |
| 375 | status = PORT_PEC; |
| 376 | port_change_bit = "enable/disable"; |
| 377 | break; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 378 | case USB_PORT_FEAT_C_SUSPEND: |
| 379 | status = PORT_PLC; |
| 380 | port_change_bit = "suspend/resume"; |
| 381 | break; |
Andiry Xu | 85387c0 | 2011-04-27 18:07:35 +0800 | [diff] [blame] | 382 | case USB_PORT_FEAT_C_PORT_LINK_STATE: |
| 383 | status = PORT_PLC; |
| 384 | port_change_bit = "link state"; |
| 385 | break; |
Sarah Sharp | 34fb562 | 2009-12-09 15:59:08 -0800 | [diff] [blame] | 386 | default: |
| 387 | /* Should never happen */ |
| 388 | return; |
| 389 | } |
| 390 | /* Change bits are all write 1 to clear */ |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 391 | writel(port_status | status, addr); |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 392 | port_status = readl(addr); |
Sarah Sharp | 34fb562 | 2009-12-09 15:59:08 -0800 | [diff] [blame] | 393 | xhci_dbg(xhci, "clear port %s change, actual port %d status = 0x%x\n", |
| 394 | port_change_bit, wIndex, port_status); |
| 395 | } |
| 396 | |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 397 | static int xhci_get_ports(struct usb_hcd *hcd, __le32 __iomem ***port_array) |
| 398 | { |
| 399 | int max_ports; |
| 400 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
| 401 | |
| 402 | if (hcd->speed == HCD_USB3) { |
| 403 | max_ports = xhci->num_usb3_ports; |
| 404 | *port_array = xhci->usb3_ports; |
| 405 | } else { |
| 406 | max_ports = xhci->num_usb2_ports; |
| 407 | *port_array = xhci->usb2_ports; |
| 408 | } |
| 409 | |
| 410 | return max_ports; |
| 411 | } |
| 412 | |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 413 | void xhci_set_link_state(struct xhci_hcd *xhci, __le32 __iomem **port_array, |
| 414 | int port_id, u32 link_state) |
| 415 | { |
| 416 | u32 temp; |
| 417 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 418 | temp = readl(port_array[port_id]); |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 419 | temp = xhci_port_state_to_neutral(temp); |
| 420 | temp &= ~PORT_PLS_MASK; |
| 421 | temp |= PORT_LINK_STROBE | link_state; |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 422 | writel(temp, port_array[port_id]); |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 423 | } |
| 424 | |
Felipe Balbi | ed384bd | 2012-08-07 14:10:03 +0300 | [diff] [blame] | 425 | static void xhci_set_remote_wake_mask(struct xhci_hcd *xhci, |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 426 | __le32 __iomem **port_array, int port_id, u16 wake_mask) |
| 427 | { |
| 428 | u32 temp; |
| 429 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 430 | temp = readl(port_array[port_id]); |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 431 | temp = xhci_port_state_to_neutral(temp); |
| 432 | |
| 433 | if (wake_mask & USB_PORT_FEAT_REMOTE_WAKE_CONNECT) |
| 434 | temp |= PORT_WKCONN_E; |
| 435 | else |
| 436 | temp &= ~PORT_WKCONN_E; |
| 437 | |
| 438 | if (wake_mask & USB_PORT_FEAT_REMOTE_WAKE_DISCONNECT) |
| 439 | temp |= PORT_WKDISC_E; |
| 440 | else |
| 441 | temp &= ~PORT_WKDISC_E; |
| 442 | |
| 443 | if (wake_mask & USB_PORT_FEAT_REMOTE_WAKE_OVER_CURRENT) |
| 444 | temp |= PORT_WKOC_E; |
| 445 | else |
| 446 | temp &= ~PORT_WKOC_E; |
| 447 | |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 448 | writel(temp, port_array[port_id]); |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 449 | } |
| 450 | |
Andiry Xu | d2f52c9 | 2011-09-23 14:19:49 -0700 | [diff] [blame] | 451 | /* Test and clear port RWC bit */ |
| 452 | void xhci_test_and_clear_bit(struct xhci_hcd *xhci, __le32 __iomem **port_array, |
| 453 | int port_id, u32 port_bit) |
| 454 | { |
| 455 | u32 temp; |
| 456 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 457 | temp = readl(port_array[port_id]); |
Andiry Xu | d2f52c9 | 2011-09-23 14:19:49 -0700 | [diff] [blame] | 458 | if (temp & port_bit) { |
| 459 | temp = xhci_port_state_to_neutral(temp); |
| 460 | temp |= port_bit; |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 461 | writel(temp, port_array[port_id]); |
Andiry Xu | d2f52c9 | 2011-09-23 14:19:49 -0700 | [diff] [blame] | 462 | } |
| 463 | } |
| 464 | |
Sarah Sharp | 063ebeb | 2013-04-02 09:23:42 -0700 | [diff] [blame] | 465 | /* Updates Link Status for USB 2.1 port */ |
| 466 | static void xhci_hub_report_usb2_link_state(u32 *status, u32 status_reg) |
| 467 | { |
| 468 | if ((status_reg & PORT_PLS_MASK) == XDEV_U2) |
| 469 | *status |= USB_PORT_STAT_L1; |
| 470 | } |
| 471 | |
Stanislaw Ledwon | 8bea2bd | 2012-06-18 15:20:00 +0200 | [diff] [blame] | 472 | /* Updates Link Status for super Speed port */ |
Sarah Sharp | 063ebeb | 2013-04-02 09:23:42 -0700 | [diff] [blame] | 473 | static void xhci_hub_report_usb3_link_state(u32 *status, u32 status_reg) |
Stanislaw Ledwon | 8bea2bd | 2012-06-18 15:20:00 +0200 | [diff] [blame] | 474 | { |
| 475 | u32 pls = status_reg & PORT_PLS_MASK; |
| 476 | |
| 477 | /* resume state is a xHCI internal state. |
| 478 | * Do not report it to usb core. |
| 479 | */ |
| 480 | if (pls == XDEV_RESUME) |
| 481 | return; |
| 482 | |
| 483 | /* When the CAS bit is set then warm reset |
| 484 | * should be performed on port |
| 485 | */ |
| 486 | if (status_reg & PORT_CAS) { |
| 487 | /* The CAS bit can be set while the port is |
| 488 | * in any link state. |
| 489 | * Only roothubs have CAS bit, so we |
| 490 | * pretend to be in compliance mode |
| 491 | * unless we're already in compliance |
| 492 | * or the inactive state. |
| 493 | */ |
| 494 | if (pls != USB_SS_PORT_LS_COMP_MOD && |
| 495 | pls != USB_SS_PORT_LS_SS_INACTIVE) { |
| 496 | pls = USB_SS_PORT_LS_COMP_MOD; |
| 497 | } |
| 498 | /* Return also connection bit - |
| 499 | * hub state machine resets port |
| 500 | * when this bit is set. |
| 501 | */ |
| 502 | pls |= USB_PORT_STAT_CONNECTION; |
Alexis R. Cortes | 71c731a | 2012-08-03 14:00:27 -0500 | [diff] [blame] | 503 | } else { |
| 504 | /* |
| 505 | * If CAS bit isn't set but the Port is already at |
| 506 | * Compliance Mode, fake a connection so the USB core |
| 507 | * notices the Compliance state and resets the port. |
| 508 | * This resolves an issue generated by the SN65LVPE502CP |
| 509 | * in which sometimes the port enters compliance mode |
| 510 | * caused by a delay on the host-device negotiation. |
| 511 | */ |
| 512 | if (pls == USB_SS_PORT_LS_COMP_MOD) |
| 513 | pls |= USB_PORT_STAT_CONNECTION; |
Stanislaw Ledwon | 8bea2bd | 2012-06-18 15:20:00 +0200 | [diff] [blame] | 514 | } |
Alexis R. Cortes | 71c731a | 2012-08-03 14:00:27 -0500 | [diff] [blame] | 515 | |
Stanislaw Ledwon | 8bea2bd | 2012-06-18 15:20:00 +0200 | [diff] [blame] | 516 | /* update status field */ |
| 517 | *status |= pls; |
| 518 | } |
| 519 | |
Alexis R. Cortes | 71c731a | 2012-08-03 14:00:27 -0500 | [diff] [blame] | 520 | /* |
| 521 | * Function for Compliance Mode Quirk. |
| 522 | * |
| 523 | * This Function verifies if all xhc USB3 ports have entered U0, if so, |
| 524 | * the compliance mode timer is deleted. A port won't enter |
| 525 | * compliance mode if it has previously entered U0. |
| 526 | */ |
Sachin Kamat | 5f20cf1 | 2013-09-16 12:01:34 +0530 | [diff] [blame] | 527 | static void xhci_del_comp_mod_timer(struct xhci_hcd *xhci, u32 status, |
| 528 | u16 wIndex) |
Alexis R. Cortes | 71c731a | 2012-08-03 14:00:27 -0500 | [diff] [blame] | 529 | { |
| 530 | u32 all_ports_seen_u0 = ((1 << xhci->num_usb3_ports)-1); |
| 531 | bool port_in_u0 = ((status & PORT_PLS_MASK) == XDEV_U0); |
| 532 | |
| 533 | if (!(xhci->quirks & XHCI_COMP_MODE_QUIRK)) |
| 534 | return; |
| 535 | |
| 536 | if ((xhci->port_status_u0 != all_ports_seen_u0) && port_in_u0) { |
| 537 | xhci->port_status_u0 |= 1 << wIndex; |
| 538 | if (xhci->port_status_u0 == all_ports_seen_u0) { |
| 539 | del_timer_sync(&xhci->comp_mode_recovery_timer); |
Xenia Ragiadakou | 4bdfe4c | 2013-08-06 07:52:45 +0300 | [diff] [blame] | 540 | xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, |
| 541 | "All USB3 ports have entered U0 already!"); |
| 542 | xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, |
| 543 | "Compliance Mode Recovery Timer Deleted."); |
Alexis R. Cortes | 71c731a | 2012-08-03 14:00:27 -0500 | [diff] [blame] | 544 | } |
| 545 | } |
| 546 | } |
| 547 | |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 548 | /* |
| 549 | * Converts a raw xHCI port status into the format that external USB 2.0 or USB |
| 550 | * 3.0 hubs use. |
| 551 | * |
| 552 | * Possible side effects: |
| 553 | * - Mark a port as being done with device resume, |
| 554 | * and ring the endpoint doorbells. |
| 555 | * - Stop the Synopsys redriver Compliance Mode polling. |
Sarah Sharp | 8b3d457 | 2013-08-20 08:12:12 -0700 | [diff] [blame] | 556 | * - 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] | 557 | */ |
| 558 | static u32 xhci_get_port_status(struct usb_hcd *hcd, |
| 559 | struct xhci_bus_state *bus_state, |
| 560 | __le32 __iomem **port_array, |
Sarah Sharp | 8b3d457 | 2013-08-20 08:12:12 -0700 | [diff] [blame] | 561 | u16 wIndex, u32 raw_port_status, |
| 562 | unsigned long flags) |
| 563 | __releases(&xhci->lock) |
| 564 | __acquires(&xhci->lock) |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 565 | { |
| 566 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
| 567 | u32 status = 0; |
| 568 | int slot_id; |
| 569 | |
| 570 | /* wPortChange bits */ |
| 571 | if (raw_port_status & PORT_CSC) |
| 572 | status |= USB_PORT_STAT_C_CONNECTION << 16; |
| 573 | if (raw_port_status & PORT_PEC) |
| 574 | status |= USB_PORT_STAT_C_ENABLE << 16; |
| 575 | if ((raw_port_status & PORT_OCC)) |
| 576 | status |= USB_PORT_STAT_C_OVERCURRENT << 16; |
| 577 | if ((raw_port_status & PORT_RC)) |
| 578 | status |= USB_PORT_STAT_C_RESET << 16; |
| 579 | /* USB3.0 only */ |
| 580 | if (hcd->speed == HCD_USB3) { |
| 581 | if ((raw_port_status & PORT_PLC)) |
| 582 | status |= USB_PORT_STAT_C_LINK_STATE << 16; |
| 583 | if ((raw_port_status & PORT_WRC)) |
| 584 | status |= USB_PORT_STAT_C_BH_RESET << 16; |
| 585 | } |
| 586 | |
| 587 | if (hcd->speed != HCD_USB3) { |
| 588 | if ((raw_port_status & PORT_PLS_MASK) == XDEV_U3 |
| 589 | && (raw_port_status & PORT_POWER)) |
| 590 | status |= USB_PORT_STAT_SUSPEND; |
| 591 | } |
| 592 | if ((raw_port_status & PORT_PLS_MASK) == XDEV_RESUME && |
| 593 | !DEV_SUPERSPEED(raw_port_status)) { |
| 594 | if ((raw_port_status & PORT_RESET) || |
| 595 | !(raw_port_status & PORT_PE)) |
| 596 | return 0xffffffff; |
| 597 | if (time_after_eq(jiffies, |
| 598 | bus_state->resume_done[wIndex])) { |
Sarah Sharp | 8b3d457 | 2013-08-20 08:12:12 -0700 | [diff] [blame] | 599 | int time_left; |
| 600 | |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 601 | xhci_dbg(xhci, "Resume USB2 port %d\n", |
| 602 | wIndex + 1); |
| 603 | bus_state->resume_done[wIndex] = 0; |
| 604 | clear_bit(wIndex, &bus_state->resuming_ports); |
Sarah Sharp | 8b3d457 | 2013-08-20 08:12:12 -0700 | [diff] [blame] | 605 | |
| 606 | set_bit(wIndex, &bus_state->rexit_ports); |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 607 | xhci_set_link_state(xhci, port_array, wIndex, |
| 608 | XDEV_U0); |
Sarah Sharp | 8b3d457 | 2013-08-20 08:12:12 -0700 | [diff] [blame] | 609 | |
| 610 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 611 | time_left = wait_for_completion_timeout( |
| 612 | &bus_state->rexit_done[wIndex], |
| 613 | msecs_to_jiffies( |
| 614 | XHCI_MAX_REXIT_TIMEOUT)); |
| 615 | spin_lock_irqsave(&xhci->lock, flags); |
| 616 | |
| 617 | if (time_left) { |
| 618 | slot_id = xhci_find_slot_id_by_port(hcd, |
| 619 | xhci, wIndex + 1); |
| 620 | if (!slot_id) { |
| 621 | xhci_dbg(xhci, "slot_id is zero\n"); |
| 622 | return 0xffffffff; |
| 623 | } |
| 624 | xhci_ring_device(xhci, slot_id); |
| 625 | } else { |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 626 | int port_status = readl(port_array[wIndex]); |
Sarah Sharp | 8b3d457 | 2013-08-20 08:12:12 -0700 | [diff] [blame] | 627 | xhci_warn(xhci, "Port resume took longer than %i msec, port status = 0x%x\n", |
| 628 | XHCI_MAX_REXIT_TIMEOUT, |
| 629 | port_status); |
| 630 | status |= USB_PORT_STAT_SUSPEND; |
| 631 | clear_bit(wIndex, &bus_state->rexit_ports); |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 632 | } |
Sarah Sharp | 8b3d457 | 2013-08-20 08:12:12 -0700 | [diff] [blame] | 633 | |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 634 | bus_state->port_c_suspend |= 1 << wIndex; |
| 635 | bus_state->suspended_ports &= ~(1 << wIndex); |
| 636 | } else { |
| 637 | /* |
| 638 | * The resume has been signaling for less than |
| 639 | * 20ms. Report the port status as SUSPEND, |
| 640 | * let the usbcore check port status again |
| 641 | * and clear resume signaling later. |
| 642 | */ |
| 643 | status |= USB_PORT_STAT_SUSPEND; |
| 644 | } |
| 645 | } |
| 646 | if ((raw_port_status & PORT_PLS_MASK) == XDEV_U0 |
| 647 | && (raw_port_status & PORT_POWER) |
| 648 | && (bus_state->suspended_ports & (1 << wIndex))) { |
| 649 | bus_state->suspended_ports &= ~(1 << wIndex); |
| 650 | if (hcd->speed != HCD_USB3) |
| 651 | bus_state->port_c_suspend |= 1 << wIndex; |
| 652 | } |
| 653 | if (raw_port_status & PORT_CONNECT) { |
| 654 | status |= USB_PORT_STAT_CONNECTION; |
| 655 | status |= xhci_port_speed(raw_port_status); |
| 656 | } |
| 657 | if (raw_port_status & PORT_PE) |
| 658 | status |= USB_PORT_STAT_ENABLE; |
| 659 | if (raw_port_status & PORT_OC) |
| 660 | status |= USB_PORT_STAT_OVERCURRENT; |
| 661 | if (raw_port_status & PORT_RESET) |
| 662 | status |= USB_PORT_STAT_RESET; |
| 663 | if (raw_port_status & PORT_POWER) { |
| 664 | if (hcd->speed == HCD_USB3) |
| 665 | status |= USB_SS_PORT_STAT_POWER; |
| 666 | else |
| 667 | status |= USB_PORT_STAT_POWER; |
| 668 | } |
Sarah Sharp | 063ebeb | 2013-04-02 09:23:42 -0700 | [diff] [blame] | 669 | /* Update Port Link State */ |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 670 | if (hcd->speed == HCD_USB3) { |
Sarah Sharp | 063ebeb | 2013-04-02 09:23:42 -0700 | [diff] [blame] | 671 | xhci_hub_report_usb3_link_state(&status, raw_port_status); |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 672 | /* |
| 673 | * Verify if all USB3 Ports Have entered U0 already. |
| 674 | * Delete Compliance Mode Timer if so. |
| 675 | */ |
| 676 | xhci_del_comp_mod_timer(xhci, raw_port_status, wIndex); |
Sarah Sharp | 063ebeb | 2013-04-02 09:23:42 -0700 | [diff] [blame] | 677 | } else { |
| 678 | xhci_hub_report_usb2_link_state(&status, raw_port_status); |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 679 | } |
| 680 | if (bus_state->port_c_suspend & (1 << wIndex)) |
| 681 | status |= 1 << USB_PORT_FEAT_C_SUSPEND; |
| 682 | |
| 683 | return status; |
| 684 | } |
| 685 | |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 686 | int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, |
| 687 | u16 wIndex, char *buf, u16 wLength) |
| 688 | { |
| 689 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 690 | int max_ports; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 691 | unsigned long flags; |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 692 | u32 temp, status; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 693 | int retval = 0; |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 694 | __le32 __iomem **port_array; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 695 | int slot_id; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 696 | struct xhci_bus_state *bus_state; |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 697 | u16 link_state = 0; |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 698 | u16 wake_mask = 0; |
Sarah Sharp | 797b0ca | 2011-11-10 16:02:13 -0800 | [diff] [blame] | 699 | u16 timeout = 0; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 700 | |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 701 | max_ports = xhci_get_ports(hcd, &port_array); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 702 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 703 | |
| 704 | spin_lock_irqsave(&xhci->lock, flags); |
| 705 | switch (typeReq) { |
| 706 | case GetHubStatus: |
| 707 | /* No power source, over-current reported per port */ |
| 708 | memset(buf, 0, 4); |
| 709 | break; |
| 710 | case GetHubDescriptor: |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 711 | /* Check to make sure userspace is asking for the USB 3.0 hub |
| 712 | * descriptor for the USB 3.0 roothub. If not, we stall the |
| 713 | * endpoint, like external hubs do. |
| 714 | */ |
| 715 | if (hcd->speed == HCD_USB3 && |
| 716 | (wLength < USB_DT_SS_HUB_SIZE || |
| 717 | wValue != (USB_DT_SS_HUB << 8))) { |
| 718 | xhci_dbg(xhci, "Wrong hub descriptor type for " |
| 719 | "USB 3.0 roothub.\n"); |
| 720 | goto error; |
| 721 | } |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 722 | xhci_hub_descriptor(hcd, xhci, |
| 723 | (struct usb_hub_descriptor *) buf); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 724 | break; |
Sarah Sharp | 48e8236 | 2011-10-06 11:54:23 -0700 | [diff] [blame] | 725 | case DeviceRequest | USB_REQ_GET_DESCRIPTOR: |
| 726 | if ((wValue & 0xff00) != (USB_DT_BOS << 8)) |
| 727 | goto error; |
| 728 | |
| 729 | if (hcd->speed != HCD_USB3) |
| 730 | goto error; |
| 731 | |
Sarah Sharp | af3a23e | 2012-06-25 08:24:30 -0700 | [diff] [blame] | 732 | /* Set the U1 and U2 exit latencies. */ |
Sarah Sharp | 48e8236 | 2011-10-06 11:54:23 -0700 | [diff] [blame] | 733 | memcpy(buf, &usb_bos_descriptor, |
| 734 | USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE); |
Sarah Sharp | 25cd288 | 2014-01-17 14:15:44 -0800 | [diff] [blame] | 735 | if ((xhci->quirks & XHCI_LPM_SUPPORT)) { |
| 736 | temp = readl(&xhci->cap_regs->hcs_params3); |
| 737 | buf[12] = HCS_U1_LATENCY(temp); |
| 738 | put_unaligned_le16(HCS_U2_LATENCY(temp), &buf[13]); |
| 739 | } |
Sarah Sharp | 48e8236 | 2011-10-06 11:54:23 -0700 | [diff] [blame] | 740 | |
Sarah Sharp | af3a23e | 2012-06-25 08:24:30 -0700 | [diff] [blame] | 741 | /* Indicate whether the host has LTM support. */ |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 742 | temp = readl(&xhci->cap_regs->hcc_params); |
Sarah Sharp | af3a23e | 2012-06-25 08:24:30 -0700 | [diff] [blame] | 743 | if (HCC_LTC(temp)) |
| 744 | buf[8] |= USB_LTM_SUPPORT; |
| 745 | |
Sarah Sharp | 48e8236 | 2011-10-06 11:54:23 -0700 | [diff] [blame] | 746 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 747 | return USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 748 | case GetPortStatus: |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 749 | if (!wIndex || wIndex > max_ports) |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 750 | goto error; |
| 751 | wIndex--; |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 752 | temp = readl(port_array[wIndex]); |
Sarah Sharp | f9de815 | 2010-10-29 14:37:23 -0700 | [diff] [blame] | 753 | if (temp == 0xffffffff) { |
| 754 | retval = -ENODEV; |
| 755 | break; |
| 756 | } |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 757 | status = xhci_get_port_status(hcd, bus_state, port_array, |
Sarah Sharp | 8b3d457 | 2013-08-20 08:12:12 -0700 | [diff] [blame] | 758 | wIndex, temp, flags); |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 759 | if (status == 0xffffffff) |
| 760 | goto error; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 761 | |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 762 | xhci_dbg(xhci, "get port status, actual port %d status = 0x%x\n", |
| 763 | wIndex, temp); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 764 | xhci_dbg(xhci, "Get port status returned 0x%x\n", status); |
Sarah Sharp | eae5b17 | 2013-04-02 08:42:20 -0700 | [diff] [blame] | 765 | |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 766 | put_unaligned(cpu_to_le32(status), (__le32 *) buf); |
| 767 | break; |
| 768 | case SetPortFeature: |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 769 | if (wValue == USB_PORT_FEAT_LINK_STATE) |
| 770 | link_state = (wIndex & 0xff00) >> 3; |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 771 | if (wValue == USB_PORT_FEAT_REMOTE_WAKE_MASK) |
| 772 | wake_mask = wIndex & 0xff00; |
Sarah Sharp | 797b0ca | 2011-11-10 16:02:13 -0800 | [diff] [blame] | 773 | /* The MSB of wIndex is the U1/U2 timeout */ |
| 774 | timeout = (wIndex & 0xff00) >> 8; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 775 | wIndex &= 0xff; |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 776 | if (!wIndex || wIndex > max_ports) |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 777 | goto error; |
| 778 | wIndex--; |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 779 | temp = readl(port_array[wIndex]); |
Sarah Sharp | f9de815 | 2010-10-29 14:37:23 -0700 | [diff] [blame] | 780 | if (temp == 0xffffffff) { |
| 781 | retval = -ENODEV; |
| 782 | break; |
| 783 | } |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 784 | temp = xhci_port_state_to_neutral(temp); |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 785 | /* FIXME: What new port features do we need to support? */ |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 786 | switch (wValue) { |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 787 | case USB_PORT_FEAT_SUSPEND: |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 788 | temp = readl(port_array[wIndex]); |
Andiry Xu | 65580b43 | 2011-09-23 14:19:52 -0700 | [diff] [blame] | 789 | if ((temp & PORT_PLS_MASK) != XDEV_U0) { |
| 790 | /* Resume the port to U0 first */ |
| 791 | xhci_set_link_state(xhci, port_array, wIndex, |
| 792 | XDEV_U0); |
| 793 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 794 | msleep(10); |
| 795 | spin_lock_irqsave(&xhci->lock, flags); |
| 796 | } |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 797 | /* In spec software should not attempt to suspend |
| 798 | * a port unless the port reports that it is in the |
| 799 | * enabled (PED = ‘1’,PLS < ‘3’) state. |
| 800 | */ |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 801 | temp = readl(port_array[wIndex]); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 802 | if ((temp & PORT_PE) == 0 || (temp & PORT_RESET) |
| 803 | || (temp & PORT_PLS_MASK) >= XDEV_U3) { |
| 804 | xhci_warn(xhci, "USB core suspending device " |
| 805 | "not in U0/U1/U2.\n"); |
| 806 | goto error; |
| 807 | } |
| 808 | |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 809 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
| 810 | wIndex + 1); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 811 | if (!slot_id) { |
| 812 | xhci_warn(xhci, "slot_id is zero\n"); |
| 813 | goto error; |
| 814 | } |
| 815 | /* unlock to execute stop endpoint commands */ |
| 816 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 817 | xhci_stop_device(xhci, slot_id, 1); |
| 818 | spin_lock_irqsave(&xhci->lock, flags); |
| 819 | |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 820 | xhci_set_link_state(xhci, port_array, wIndex, XDEV_U3); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 821 | |
| 822 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 823 | msleep(10); /* wait device to enter */ |
| 824 | spin_lock_irqsave(&xhci->lock, flags); |
| 825 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 826 | temp = readl(port_array[wIndex]); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 827 | bus_state->suspended_ports |= 1 << wIndex; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 828 | break; |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 829 | case USB_PORT_FEAT_LINK_STATE: |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 830 | temp = readl(port_array[wIndex]); |
Sarah Sharp | 41e7e05 | 2012-11-14 16:42:32 -0800 | [diff] [blame] | 831 | |
| 832 | /* Disable port */ |
| 833 | if (link_state == USB_SS_PORT_LS_SS_DISABLED) { |
| 834 | xhci_dbg(xhci, "Disable port %d\n", wIndex); |
| 835 | temp = xhci_port_state_to_neutral(temp); |
| 836 | /* |
| 837 | * Clear all change bits, so that we get a new |
| 838 | * connection event. |
| 839 | */ |
| 840 | temp |= PORT_CSC | PORT_PEC | PORT_WRC | |
| 841 | PORT_OCC | PORT_RC | PORT_PLC | |
| 842 | PORT_CEC; |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 843 | writel(temp | PORT_PE, port_array[wIndex]); |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 844 | temp = readl(port_array[wIndex]); |
Sarah Sharp | 41e7e05 | 2012-11-14 16:42:32 -0800 | [diff] [blame] | 845 | break; |
| 846 | } |
| 847 | |
| 848 | /* Put link in RxDetect (enable port) */ |
| 849 | if (link_state == USB_SS_PORT_LS_RX_DETECT) { |
| 850 | xhci_dbg(xhci, "Enable port %d\n", wIndex); |
| 851 | xhci_set_link_state(xhci, port_array, wIndex, |
| 852 | link_state); |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 853 | temp = readl(port_array[wIndex]); |
Sarah Sharp | 41e7e05 | 2012-11-14 16:42:32 -0800 | [diff] [blame] | 854 | break; |
| 855 | } |
| 856 | |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 857 | /* Software should not attempt to set |
Sarah Sharp | 41e7e05 | 2012-11-14 16:42:32 -0800 | [diff] [blame] | 858 | * port link state above '3' (U3) and the port |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 859 | * must be enabled. |
| 860 | */ |
| 861 | if ((temp & PORT_PE) == 0 || |
Sarah Sharp | 41e7e05 | 2012-11-14 16:42:32 -0800 | [diff] [blame] | 862 | (link_state > USB_SS_PORT_LS_U3)) { |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 863 | xhci_warn(xhci, "Cannot set link state.\n"); |
| 864 | goto error; |
| 865 | } |
| 866 | |
| 867 | if (link_state == USB_SS_PORT_LS_U3) { |
| 868 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
| 869 | wIndex + 1); |
| 870 | if (slot_id) { |
| 871 | /* unlock to execute stop endpoint |
| 872 | * commands */ |
| 873 | spin_unlock_irqrestore(&xhci->lock, |
| 874 | flags); |
| 875 | xhci_stop_device(xhci, slot_id, 1); |
| 876 | spin_lock_irqsave(&xhci->lock, flags); |
| 877 | } |
| 878 | } |
| 879 | |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 880 | xhci_set_link_state(xhci, port_array, wIndex, |
| 881 | link_state); |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 882 | |
| 883 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 884 | msleep(20); /* wait device to enter */ |
| 885 | spin_lock_irqsave(&xhci->lock, flags); |
| 886 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 887 | temp = readl(port_array[wIndex]); |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 888 | if (link_state == USB_SS_PORT_LS_U3) |
| 889 | bus_state->suspended_ports |= 1 << wIndex; |
| 890 | break; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 891 | case USB_PORT_FEAT_POWER: |
| 892 | /* |
| 893 | * Turn on ports, even if there isn't per-port switching. |
| 894 | * HC will report connect events even before this is set. |
| 895 | * However, khubd will ignore the roothub events until |
| 896 | * the roothub is registered. |
| 897 | */ |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 898 | writel(temp | PORT_POWER, port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 899 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 900 | temp = readl(port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 901 | 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] | 902 | |
Lan Tianyu | 170ed80 | 2012-10-15 15:38:34 +0800 | [diff] [blame] | 903 | spin_unlock_irqrestore(&xhci->lock, flags); |
Lan Tianyu | f7ac778 | 2012-09-05 13:44:36 +0800 | [diff] [blame] | 904 | temp = usb_acpi_power_manageable(hcd->self.root_hub, |
| 905 | wIndex); |
| 906 | if (temp) |
| 907 | usb_acpi_set_power_state(hcd->self.root_hub, |
| 908 | wIndex, true); |
Lan Tianyu | 170ed80 | 2012-10-15 15:38:34 +0800 | [diff] [blame] | 909 | spin_lock_irqsave(&xhci->lock, flags); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 910 | break; |
| 911 | case USB_PORT_FEAT_RESET: |
| 912 | temp = (temp | PORT_RESET); |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 913 | writel(temp, port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 914 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 915 | temp = readl(port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 916 | xhci_dbg(xhci, "set port reset, actual port %d status = 0x%x\n", wIndex, temp); |
| 917 | break; |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 918 | case USB_PORT_FEAT_REMOTE_WAKE_MASK: |
| 919 | xhci_set_remote_wake_mask(xhci, port_array, |
| 920 | wIndex, wake_mask); |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 921 | temp = readl(port_array[wIndex]); |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 922 | xhci_dbg(xhci, "set port remote wake mask, " |
| 923 | "actual port %d status = 0x%x\n", |
| 924 | wIndex, temp); |
| 925 | break; |
Andiry Xu | a11496e | 2011-04-27 18:07:29 +0800 | [diff] [blame] | 926 | case USB_PORT_FEAT_BH_PORT_RESET: |
| 927 | temp |= PORT_WR; |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 928 | writel(temp, port_array[wIndex]); |
Andiry Xu | a11496e | 2011-04-27 18:07:29 +0800 | [diff] [blame] | 929 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 930 | temp = readl(port_array[wIndex]); |
Andiry Xu | a11496e | 2011-04-27 18:07:29 +0800 | [diff] [blame] | 931 | break; |
Sarah Sharp | 797b0ca | 2011-11-10 16:02:13 -0800 | [diff] [blame] | 932 | case USB_PORT_FEAT_U1_TIMEOUT: |
| 933 | if (hcd->speed != HCD_USB3) |
| 934 | goto error; |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 935 | temp = readl(port_array[wIndex] + PORTPMSC); |
Sarah Sharp | 797b0ca | 2011-11-10 16:02:13 -0800 | [diff] [blame] | 936 | temp &= ~PORT_U1_TIMEOUT_MASK; |
| 937 | temp |= PORT_U1_TIMEOUT(timeout); |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 938 | writel(temp, port_array[wIndex] + PORTPMSC); |
Sarah Sharp | 797b0ca | 2011-11-10 16:02:13 -0800 | [diff] [blame] | 939 | break; |
| 940 | case USB_PORT_FEAT_U2_TIMEOUT: |
| 941 | if (hcd->speed != HCD_USB3) |
| 942 | goto error; |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 943 | temp = readl(port_array[wIndex] + PORTPMSC); |
Sarah Sharp | 797b0ca | 2011-11-10 16:02:13 -0800 | [diff] [blame] | 944 | temp &= ~PORT_U2_TIMEOUT_MASK; |
| 945 | temp |= PORT_U2_TIMEOUT(timeout); |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 946 | writel(temp, port_array[wIndex] + PORTPMSC); |
Sarah Sharp | 797b0ca | 2011-11-10 16:02:13 -0800 | [diff] [blame] | 947 | break; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 948 | default: |
| 949 | goto error; |
| 950 | } |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 951 | /* unblock any posted writes */ |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 952 | temp = readl(port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 953 | break; |
| 954 | case ClearPortFeature: |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 955 | if (!wIndex || wIndex > max_ports) |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 956 | goto error; |
| 957 | wIndex--; |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 958 | temp = readl(port_array[wIndex]); |
Sarah Sharp | f9de815 | 2010-10-29 14:37:23 -0700 | [diff] [blame] | 959 | if (temp == 0xffffffff) { |
| 960 | retval = -ENODEV; |
| 961 | break; |
| 962 | } |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 963 | /* FIXME: What new port features do we need to support? */ |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 964 | temp = xhci_port_state_to_neutral(temp); |
| 965 | switch (wValue) { |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 966 | case USB_PORT_FEAT_SUSPEND: |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 967 | temp = readl(port_array[wIndex]); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 968 | xhci_dbg(xhci, "clear USB_PORT_FEAT_SUSPEND\n"); |
| 969 | xhci_dbg(xhci, "PORTSC %04x\n", temp); |
| 970 | if (temp & PORT_RESET) |
| 971 | goto error; |
Andiry Xu | 5ac04bf | 2011-08-03 16:46:48 +0800 | [diff] [blame] | 972 | if ((temp & PORT_PLS_MASK) == XDEV_U3) { |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 973 | if ((temp & PORT_PE) == 0) |
| 974 | goto error; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 975 | |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 976 | xhci_set_link_state(xhci, port_array, wIndex, |
| 977 | XDEV_RESUME); |
| 978 | spin_unlock_irqrestore(&xhci->lock, flags); |
Andiry Xu | a711423 | 2011-04-27 18:07:50 +0800 | [diff] [blame] | 979 | msleep(20); |
| 980 | spin_lock_irqsave(&xhci->lock, flags); |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 981 | xhci_set_link_state(xhci, port_array, wIndex, |
| 982 | XDEV_U0); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 983 | } |
Andiry Xu | a711423 | 2011-04-27 18:07:50 +0800 | [diff] [blame] | 984 | bus_state->port_c_suspend |= 1 << wIndex; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 985 | |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 986 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
| 987 | wIndex + 1); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 988 | if (!slot_id) { |
| 989 | xhci_dbg(xhci, "slot_id is zero\n"); |
| 990 | goto error; |
| 991 | } |
| 992 | xhci_ring_device(xhci, slot_id); |
| 993 | break; |
| 994 | case USB_PORT_FEAT_C_SUSPEND: |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 995 | bus_state->port_c_suspend &= ~(1 << wIndex); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 996 | case USB_PORT_FEAT_C_RESET: |
Andiry Xu | a11496e | 2011-04-27 18:07:29 +0800 | [diff] [blame] | 997 | case USB_PORT_FEAT_C_BH_PORT_RESET: |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 998 | case USB_PORT_FEAT_C_CONNECTION: |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 999 | case USB_PORT_FEAT_C_OVER_CURRENT: |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 1000 | case USB_PORT_FEAT_C_ENABLE: |
Andiry Xu | 85387c0 | 2011-04-27 18:07:35 +0800 | [diff] [blame] | 1001 | case USB_PORT_FEAT_C_PORT_LINK_STATE: |
Sarah Sharp | 34fb562 | 2009-12-09 15:59:08 -0800 | [diff] [blame] | 1002 | xhci_clear_port_change_bit(xhci, wValue, wIndex, |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 1003 | port_array[wIndex], temp); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1004 | break; |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 1005 | case USB_PORT_FEAT_ENABLE: |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 1006 | xhci_disable_port(hcd, xhci, wIndex, |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 1007 | port_array[wIndex], temp); |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 1008 | break; |
Lan Tianyu | 693d8eb | 2012-09-05 13:44:35 +0800 | [diff] [blame] | 1009 | case USB_PORT_FEAT_POWER: |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 1010 | writel(temp & ~PORT_POWER, port_array[wIndex]); |
Lan Tianyu | f7ac778 | 2012-09-05 13:44:36 +0800 | [diff] [blame] | 1011 | |
Lan Tianyu | 170ed80 | 2012-10-15 15:38:34 +0800 | [diff] [blame] | 1012 | spin_unlock_irqrestore(&xhci->lock, flags); |
Lan Tianyu | f7ac778 | 2012-09-05 13:44:36 +0800 | [diff] [blame] | 1013 | temp = usb_acpi_power_manageable(hcd->self.root_hub, |
| 1014 | wIndex); |
| 1015 | if (temp) |
| 1016 | usb_acpi_set_power_state(hcd->self.root_hub, |
| 1017 | wIndex, false); |
Lan Tianyu | 170ed80 | 2012-10-15 15:38:34 +0800 | [diff] [blame] | 1018 | spin_lock_irqsave(&xhci->lock, flags); |
Lan Tianyu | 693d8eb | 2012-09-05 13:44:35 +0800 | [diff] [blame] | 1019 | break; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1020 | default: |
| 1021 | goto error; |
| 1022 | } |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1023 | break; |
| 1024 | default: |
| 1025 | error: |
| 1026 | /* "stall" on error */ |
| 1027 | retval = -EPIPE; |
| 1028 | } |
| 1029 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1030 | return retval; |
| 1031 | } |
| 1032 | |
| 1033 | /* |
| 1034 | * Returns 0 if the status hasn't changed, or the number of bytes in buf. |
| 1035 | * Ports are 0-indexed from the HCD point of view, |
| 1036 | * and 1-indexed from the USB core pointer of view. |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1037 | * |
| 1038 | * Note that the status change bits will be cleared as soon as a port status |
| 1039 | * change event is generated, so we use the saved status from that event. |
| 1040 | */ |
| 1041 | int xhci_hub_status_data(struct usb_hcd *hcd, char *buf) |
| 1042 | { |
| 1043 | unsigned long flags; |
| 1044 | u32 temp, status; |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 1045 | u32 mask; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1046 | int i, retval; |
| 1047 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 1048 | int max_ports; |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 1049 | __le32 __iomem **port_array; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1050 | struct xhci_bus_state *bus_state; |
Sarah Sharp | c52804a | 2012-11-27 12:30:23 -0800 | [diff] [blame] | 1051 | bool reset_change = false; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1052 | |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 1053 | max_ports = xhci_get_ports(hcd, &port_array); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1054 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1055 | |
| 1056 | /* Initial status is no changes */ |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 1057 | retval = (max_ports + 8) / 8; |
William Gulland | 419a8e81 | 2010-05-12 10:20:34 -0700 | [diff] [blame] | 1058 | memset(buf, 0, retval); |
Andiry Xu | f370b99 | 2012-04-14 02:54:30 +0800 | [diff] [blame] | 1059 | |
| 1060 | /* |
| 1061 | * Inform the usbcore about resume-in-progress by returning |
| 1062 | * a non-zero value even if there are no status changes. |
| 1063 | */ |
| 1064 | status = bus_state->resuming_ports; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1065 | |
Greg KH | 44f4c3e | 2011-09-19 16:05:11 -0700 | [diff] [blame] | 1066 | mask = PORT_CSC | PORT_PEC | PORT_OCC | PORT_PLC | PORT_WRC; |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 1067 | |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1068 | spin_lock_irqsave(&xhci->lock, flags); |
| 1069 | /* 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] | 1070 | for (i = 0; i < max_ports; i++) { |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 1071 | temp = readl(port_array[i]); |
Sarah Sharp | f9de815 | 2010-10-29 14:37:23 -0700 | [diff] [blame] | 1072 | if (temp == 0xffffffff) { |
| 1073 | retval = -ENODEV; |
| 1074 | break; |
| 1075 | } |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 1076 | if ((temp & mask) != 0 || |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1077 | (bus_state->port_c_suspend & 1 << i) || |
| 1078 | (bus_state->resume_done[i] && time_after_eq( |
| 1079 | jiffies, bus_state->resume_done[i]))) { |
William Gulland | 419a8e81 | 2010-05-12 10:20:34 -0700 | [diff] [blame] | 1080 | buf[(i + 1) / 8] |= 1 << (i + 1) % 8; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1081 | status = 1; |
| 1082 | } |
Sarah Sharp | c52804a | 2012-11-27 12:30:23 -0800 | [diff] [blame] | 1083 | if ((temp & PORT_RC)) |
| 1084 | reset_change = true; |
| 1085 | } |
| 1086 | if (!status && !reset_change) { |
| 1087 | xhci_dbg(xhci, "%s: stopping port polling.\n", __func__); |
| 1088 | clear_bit(HCD_FLAG_POLL_RH, &hcd->flags); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 1089 | } |
| 1090 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1091 | return status ? retval : 0; |
| 1092 | } |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1093 | |
| 1094 | #ifdef CONFIG_PM |
| 1095 | |
| 1096 | int xhci_bus_suspend(struct usb_hcd *hcd) |
| 1097 | { |
| 1098 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 1099 | int max_ports, port_index; |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 1100 | __le32 __iomem **port_array; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1101 | struct xhci_bus_state *bus_state; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1102 | unsigned long flags; |
| 1103 | |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 1104 | max_ports = xhci_get_ports(hcd, &port_array); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1105 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1106 | |
| 1107 | spin_lock_irqsave(&xhci->lock, flags); |
| 1108 | |
| 1109 | if (hcd->self.root_hub->do_remote_wakeup) { |
Andiry Xu | f370b99 | 2012-04-14 02:54:30 +0800 | [diff] [blame] | 1110 | if (bus_state->resuming_ports) { |
| 1111 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1112 | xhci_dbg(xhci, "suspend failed because " |
| 1113 | "a port is resuming\n"); |
| 1114 | return -EBUSY; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1115 | } |
| 1116 | } |
| 1117 | |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 1118 | port_index = max_ports; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1119 | bus_state->bus_suspended = 0; |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 1120 | while (port_index--) { |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1121 | /* suspend the port if the port is not suspended */ |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1122 | u32 t1, t2; |
| 1123 | int slot_id; |
| 1124 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 1125 | t1 = readl(port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1126 | t2 = xhci_port_state_to_neutral(t1); |
| 1127 | |
| 1128 | if ((t1 & PORT_PE) && !(t1 & PORT_PLS_MASK)) { |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 1129 | xhci_dbg(xhci, "port %d not suspended\n", port_index); |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 1130 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 1131 | port_index + 1); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1132 | if (slot_id) { |
| 1133 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1134 | xhci_stop_device(xhci, slot_id, 1); |
| 1135 | spin_lock_irqsave(&xhci->lock, flags); |
| 1136 | } |
| 1137 | t2 &= ~PORT_PLS_MASK; |
| 1138 | t2 |= PORT_LINK_STROBE | XDEV_U3; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1139 | set_bit(port_index, &bus_state->bus_suspended); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1140 | } |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 1141 | /* USB core sets remote wake mask for USB 3.0 hubs, |
Alan Stern | 84ebc10 | 2013-03-27 16:14:46 -0400 | [diff] [blame] | 1142 | * including the USB 3.0 roothub, but only if CONFIG_PM_RUNTIME |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 1143 | * is enabled, so also enable remote wake here. |
| 1144 | */ |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1145 | if (hcd->self.root_hub->do_remote_wakeup) { |
| 1146 | if (t1 & PORT_CONNECT) { |
| 1147 | t2 |= PORT_WKOC_E | PORT_WKDISC_E; |
| 1148 | t2 &= ~PORT_WKCONN_E; |
| 1149 | } else { |
| 1150 | t2 |= PORT_WKOC_E | PORT_WKCONN_E; |
| 1151 | t2 &= ~PORT_WKDISC_E; |
| 1152 | } |
| 1153 | } else |
| 1154 | t2 &= ~PORT_WAKE_BITS; |
| 1155 | |
| 1156 | t1 = xhci_port_state_to_neutral(t1); |
| 1157 | if (t1 != t2) |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 1158 | writel(t2, port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1159 | } |
| 1160 | hcd->state = HC_STATE_SUSPENDED; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1161 | bus_state->next_statechange = jiffies + msecs_to_jiffies(10); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1162 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1163 | return 0; |
| 1164 | } |
| 1165 | |
| 1166 | int xhci_bus_resume(struct usb_hcd *hcd) |
| 1167 | { |
| 1168 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 1169 | int max_ports, port_index; |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 1170 | __le32 __iomem **port_array; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1171 | struct xhci_bus_state *bus_state; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1172 | u32 temp; |
| 1173 | unsigned long flags; |
| 1174 | |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 1175 | max_ports = xhci_get_ports(hcd, &port_array); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1176 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1177 | |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1178 | if (time_before(jiffies, bus_state->next_statechange)) |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1179 | msleep(5); |
| 1180 | |
| 1181 | spin_lock_irqsave(&xhci->lock, flags); |
| 1182 | if (!HCD_HW_ACCESSIBLE(hcd)) { |
| 1183 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1184 | return -ESHUTDOWN; |
| 1185 | } |
| 1186 | |
| 1187 | /* delay the irqs */ |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 1188 | temp = readl(&xhci->op_regs->command); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1189 | temp &= ~CMD_EIE; |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 1190 | writel(temp, &xhci->op_regs->command); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1191 | |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 1192 | port_index = max_ports; |
| 1193 | while (port_index--) { |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1194 | /* Check whether need resume ports. If needed |
| 1195 | resume port and disable remote wakeup */ |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1196 | u32 temp; |
| 1197 | int slot_id; |
| 1198 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 1199 | temp = readl(port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1200 | if (DEV_SUPERSPEED(temp)) |
| 1201 | temp &= ~(PORT_RWC_BITS | PORT_CEC | PORT_WAKE_BITS); |
| 1202 | else |
| 1203 | temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1204 | if (test_bit(port_index, &bus_state->bus_suspended) && |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1205 | (temp & PORT_PLS_MASK)) { |
| 1206 | if (DEV_SUPERSPEED(temp)) { |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 1207 | xhci_set_link_state(xhci, port_array, |
| 1208 | port_index, XDEV_U0); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1209 | } else { |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 1210 | xhci_set_link_state(xhci, port_array, |
| 1211 | port_index, XDEV_RESUME); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1212 | |
| 1213 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1214 | msleep(20); |
| 1215 | spin_lock_irqsave(&xhci->lock, flags); |
| 1216 | |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 1217 | xhci_set_link_state(xhci, port_array, |
| 1218 | port_index, XDEV_U0); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1219 | } |
Andiry Xu | 4f0871a | 2011-04-19 17:17:39 +0800 | [diff] [blame] | 1220 | /* wait for the port to enter U0 and report port link |
| 1221 | * state change. |
| 1222 | */ |
| 1223 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1224 | msleep(20); |
| 1225 | spin_lock_irqsave(&xhci->lock, flags); |
| 1226 | |
| 1227 | /* Clear PLC */ |
Andiry Xu | d2f52c9 | 2011-09-23 14:19:49 -0700 | [diff] [blame] | 1228 | xhci_test_and_clear_bit(xhci, port_array, port_index, |
| 1229 | PORT_PLC); |
Andiry Xu | 4f0871a | 2011-04-19 17:17:39 +0800 | [diff] [blame] | 1230 | |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 1231 | slot_id = xhci_find_slot_id_by_port(hcd, |
| 1232 | xhci, port_index + 1); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1233 | if (slot_id) |
| 1234 | xhci_ring_device(xhci, slot_id); |
| 1235 | } else |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 1236 | writel(temp, port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1237 | } |
| 1238 | |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 1239 | (void) readl(&xhci->op_regs->command); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1240 | |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1241 | bus_state->next_statechange = jiffies + msecs_to_jiffies(5); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1242 | /* re-enable irqs */ |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 1243 | temp = readl(&xhci->op_regs->command); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1244 | temp |= CMD_EIE; |
Xenia Ragiadakou | 204b779 | 2013-11-15 05:34:07 +0200 | [diff] [blame] | 1245 | writel(temp, &xhci->op_regs->command); |
Xenia Ragiadakou | b0ba972 | 2013-11-15 05:34:06 +0200 | [diff] [blame] | 1246 | temp = readl(&xhci->op_regs->command); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1247 | |
| 1248 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1249 | return 0; |
| 1250 | } |
| 1251 | |
Sarah Sharp | 436a389 | 2010-10-15 14:59:15 -0700 | [diff] [blame] | 1252 | #endif /* CONFIG_PM */ |