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" |
| 27 | |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 28 | #define PORT_WAKE_BITS (PORT_WKOC_E | PORT_WKDISC_E | PORT_WKCONN_E) |
| 29 | #define PORT_RWC_BITS (PORT_CSC | PORT_PEC | PORT_WRC | PORT_OCC | \ |
| 30 | PORT_RC | PORT_PLC | PORT_PE) |
| 31 | |
Sebastian Andrzej Siewior | 3415fc9 | 2012-08-22 15:12:06 +0200 | [diff] [blame^] | 32 | /* USB 3.0 BOS descriptor and a capability descriptor, combined */ |
Sarah Sharp | 48e8236 | 2011-10-06 11:54:23 -0700 | [diff] [blame] | 33 | static u8 usb_bos_descriptor [] = { |
| 34 | USB_DT_BOS_SIZE, /* __u8 bLength, 5 bytes */ |
| 35 | USB_DT_BOS, /* __u8 bDescriptorType */ |
| 36 | 0x0F, 0x00, /* __le16 wTotalLength, 15 bytes */ |
| 37 | 0x1, /* __u8 bNumDeviceCaps */ |
| 38 | /* First device capability */ |
| 39 | USB_DT_USB_SS_CAP_SIZE, /* __u8 bLength, 10 bytes */ |
| 40 | USB_DT_DEVICE_CAPABILITY, /* Device Capability */ |
| 41 | USB_SS_CAP_TYPE, /* bDevCapabilityType, SUPERSPEED_USB */ |
| 42 | 0x00, /* bmAttributes, LTM off by default */ |
| 43 | USB_5GBPS_OPERATION, 0x00, /* wSpeedsSupported, 5Gbps only */ |
| 44 | 0x03, /* bFunctionalitySupport, |
| 45 | USB 3.0 speed only */ |
| 46 | 0x00, /* bU1DevExitLat, set later. */ |
| 47 | 0x00, 0x00 /* __le16 bU2DevExitLat, set later. */ |
| 48 | }; |
| 49 | |
| 50 | |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 51 | static void xhci_common_hub_descriptor(struct xhci_hcd *xhci, |
| 52 | struct usb_hub_descriptor *desc, int ports) |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 53 | { |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 54 | u16 temp; |
| 55 | |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 56 | desc->bPwrOn2PwrGood = 10; /* xhci section 5.4.9 says 20ms max */ |
| 57 | desc->bHubContrCurrent = 0; |
| 58 | |
| 59 | desc->bNbrPorts = ports; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 60 | temp = 0; |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 61 | /* Bits 1:0 - support per-port power switching, or power always on */ |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 62 | if (HCC_PPC(xhci->hcc_params)) |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 63 | temp |= HUB_CHAR_INDV_PORT_LPSM; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 64 | else |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 65 | temp |= HUB_CHAR_NO_LPSM; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 66 | /* Bit 2 - root hubs are not part of a compound device */ |
| 67 | /* Bits 4:3 - individual port over current protection */ |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 68 | temp |= HUB_CHAR_INDV_PORT_OCPM; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 69 | /* Bits 6:5 - no TTs in root ports */ |
| 70 | /* Bit 7 - no port indicators */ |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 71 | desc->wHubCharacteristics = cpu_to_le16(temp); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 72 | } |
| 73 | |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 74 | /* Fill in the USB 2.0 roothub descriptor */ |
| 75 | static void xhci_usb2_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
| 76 | struct usb_hub_descriptor *desc) |
| 77 | { |
| 78 | int ports; |
| 79 | u16 temp; |
| 80 | __u8 port_removable[(USB_MAXCHILDREN + 1 + 7) / 8]; |
| 81 | u32 portsc; |
| 82 | unsigned int i; |
| 83 | |
| 84 | ports = xhci->num_usb2_ports; |
| 85 | |
| 86 | xhci_common_hub_descriptor(xhci, desc, ports); |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 87 | desc->bDescriptorType = USB_DT_HUB; |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 88 | temp = 1 + (ports / 8); |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 89 | desc->bDescLength = USB_DT_HUB_NONVAR_SIZE + 2 * temp; |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 90 | |
| 91 | /* The Device Removable bits are reported on a byte granularity. |
| 92 | * If the port doesn't exist within that byte, the bit is set to 0. |
| 93 | */ |
| 94 | memset(port_removable, 0, sizeof(port_removable)); |
| 95 | for (i = 0; i < ports; i++) { |
Sarah Sharp | 3278a55 | 2012-02-09 14:43:44 -0800 | [diff] [blame] | 96 | portsc = xhci_readl(xhci, xhci->usb2_ports[i]); |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 97 | /* If a device is removable, PORTSC reports a 0, same as in the |
| 98 | * hub descriptor DeviceRemovable bits. |
| 99 | */ |
| 100 | if (portsc & PORT_DEV_REMOVE) |
| 101 | /* This math is hairy because bit 0 of DeviceRemovable |
| 102 | * is reserved, and bit 1 is for port 1, etc. |
| 103 | */ |
| 104 | port_removable[(i + 1) / 8] |= 1 << ((i + 1) % 8); |
| 105 | } |
| 106 | |
| 107 | /* ch11.h defines a hub descriptor that has room for USB_MAXCHILDREN |
| 108 | * ports on it. The USB 2.0 specification says that there are two |
| 109 | * variable length fields at the end of the hub descriptor: |
| 110 | * DeviceRemovable and PortPwrCtrlMask. But since we can have less than |
| 111 | * USB_MAXCHILDREN ports, we may need to use the DeviceRemovable array |
| 112 | * to set PortPwrCtrlMask bits. PortPwrCtrlMask must always be set to |
| 113 | * 0xFF, so we initialize the both arrays (DeviceRemovable and |
| 114 | * PortPwrCtrlMask) to 0xFF. Then we set the DeviceRemovable for each |
| 115 | * set of ports that actually exist. |
| 116 | */ |
| 117 | memset(desc->u.hs.DeviceRemovable, 0xff, |
| 118 | sizeof(desc->u.hs.DeviceRemovable)); |
| 119 | memset(desc->u.hs.PortPwrCtrlMask, 0xff, |
| 120 | sizeof(desc->u.hs.PortPwrCtrlMask)); |
| 121 | |
| 122 | for (i = 0; i < (ports + 1 + 7) / 8; i++) |
| 123 | memset(&desc->u.hs.DeviceRemovable[i], port_removable[i], |
| 124 | sizeof(__u8)); |
| 125 | } |
| 126 | |
| 127 | /* Fill in the USB 3.0 roothub descriptor */ |
| 128 | static void xhci_usb3_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
| 129 | struct usb_hub_descriptor *desc) |
| 130 | { |
| 131 | int ports; |
| 132 | u16 port_removable; |
| 133 | u32 portsc; |
| 134 | unsigned int i; |
| 135 | |
| 136 | ports = xhci->num_usb3_ports; |
| 137 | xhci_common_hub_descriptor(xhci, desc, ports); |
Aman Deep | c842114 | 2011-11-22 19:33:36 +0530 | [diff] [blame] | 138 | desc->bDescriptorType = USB_DT_SS_HUB; |
| 139 | desc->bDescLength = USB_DT_SS_HUB_SIZE; |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 140 | |
| 141 | /* header decode latency should be zero for roothubs, |
| 142 | * see section 4.23.5.2. |
| 143 | */ |
| 144 | desc->u.ss.bHubHdrDecLat = 0; |
| 145 | desc->u.ss.wHubDelay = 0; |
| 146 | |
| 147 | port_removable = 0; |
| 148 | /* bit 0 is reserved, bit 1 is for port 1, etc. */ |
| 149 | for (i = 0; i < ports; i++) { |
| 150 | portsc = xhci_readl(xhci, xhci->usb3_ports[i]); |
| 151 | if (portsc & PORT_DEV_REMOVE) |
| 152 | port_removable |= 1 << (i + 1); |
| 153 | } |
| 154 | memset(&desc->u.ss.DeviceRemovable, |
| 155 | (__force __u16) cpu_to_le16(port_removable), |
| 156 | sizeof(__u16)); |
| 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 | } |
| 290 | cmd->command_trb = xhci->cmd_ring->enqueue; |
| 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, |
| 299 | USB_CTRL_SET_TIMEOUT); |
| 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 */ |
| 345 | xhci_writel(xhci, port_status | PORT_PE, addr); |
| 346 | port_status = xhci_readl(xhci, addr); |
| 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 */ |
| 391 | xhci_writel(xhci, port_status | status, addr); |
| 392 | port_status = xhci_readl(xhci, addr); |
| 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 | |
| 418 | temp = xhci_readl(xhci, port_array[port_id]); |
| 419 | temp = xhci_port_state_to_neutral(temp); |
| 420 | temp &= ~PORT_PLS_MASK; |
| 421 | temp |= PORT_LINK_STROBE | link_state; |
| 422 | xhci_writel(xhci, temp, port_array[port_id]); |
| 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 | |
| 430 | temp = xhci_readl(xhci, port_array[port_id]); |
| 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 | |
| 448 | xhci_writel(xhci, temp, port_array[port_id]); |
| 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 | |
| 457 | temp = xhci_readl(xhci, port_array[port_id]); |
| 458 | if (temp & port_bit) { |
| 459 | temp = xhci_port_state_to_neutral(temp); |
| 460 | temp |= port_bit; |
| 461 | xhci_writel(xhci, temp, port_array[port_id]); |
| 462 | } |
| 463 | } |
| 464 | |
Stanislaw Ledwon | 8bea2bd | 2012-06-18 15:20:00 +0200 | [diff] [blame] | 465 | /* Updates Link Status for super Speed port */ |
| 466 | static void xhci_hub_report_link_state(u32 *status, u32 status_reg) |
| 467 | { |
| 468 | u32 pls = status_reg & PORT_PLS_MASK; |
| 469 | |
| 470 | /* resume state is a xHCI internal state. |
| 471 | * Do not report it to usb core. |
| 472 | */ |
| 473 | if (pls == XDEV_RESUME) |
| 474 | return; |
| 475 | |
| 476 | /* When the CAS bit is set then warm reset |
| 477 | * should be performed on port |
| 478 | */ |
| 479 | if (status_reg & PORT_CAS) { |
| 480 | /* The CAS bit can be set while the port is |
| 481 | * in any link state. |
| 482 | * Only roothubs have CAS bit, so we |
| 483 | * pretend to be in compliance mode |
| 484 | * unless we're already in compliance |
| 485 | * or the inactive state. |
| 486 | */ |
| 487 | if (pls != USB_SS_PORT_LS_COMP_MOD && |
| 488 | pls != USB_SS_PORT_LS_SS_INACTIVE) { |
| 489 | pls = USB_SS_PORT_LS_COMP_MOD; |
| 490 | } |
| 491 | /* Return also connection bit - |
| 492 | * hub state machine resets port |
| 493 | * when this bit is set. |
| 494 | */ |
| 495 | pls |= USB_PORT_STAT_CONNECTION; |
| 496 | } |
| 497 | /* update status field */ |
| 498 | *status |= pls; |
| 499 | } |
| 500 | |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 501 | int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, |
| 502 | u16 wIndex, char *buf, u16 wLength) |
| 503 | { |
| 504 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 505 | int max_ports; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 506 | unsigned long flags; |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 507 | u32 temp, status; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 508 | int retval = 0; |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 509 | __le32 __iomem **port_array; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 510 | int slot_id; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 511 | struct xhci_bus_state *bus_state; |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 512 | u16 link_state = 0; |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 513 | u16 wake_mask = 0; |
Sarah Sharp | 797b0ca | 2011-11-10 16:02:13 -0800 | [diff] [blame] | 514 | u16 timeout = 0; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 515 | |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 516 | max_ports = xhci_get_ports(hcd, &port_array); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 517 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 518 | |
| 519 | spin_lock_irqsave(&xhci->lock, flags); |
| 520 | switch (typeReq) { |
| 521 | case GetHubStatus: |
| 522 | /* No power source, over-current reported per port */ |
| 523 | memset(buf, 0, 4); |
| 524 | break; |
| 525 | case GetHubDescriptor: |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 526 | /* Check to make sure userspace is asking for the USB 3.0 hub |
| 527 | * descriptor for the USB 3.0 roothub. If not, we stall the |
| 528 | * endpoint, like external hubs do. |
| 529 | */ |
| 530 | if (hcd->speed == HCD_USB3 && |
| 531 | (wLength < USB_DT_SS_HUB_SIZE || |
| 532 | wValue != (USB_DT_SS_HUB << 8))) { |
| 533 | xhci_dbg(xhci, "Wrong hub descriptor type for " |
| 534 | "USB 3.0 roothub.\n"); |
| 535 | goto error; |
| 536 | } |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 537 | xhci_hub_descriptor(hcd, xhci, |
| 538 | (struct usb_hub_descriptor *) buf); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 539 | break; |
Sarah Sharp | 48e8236 | 2011-10-06 11:54:23 -0700 | [diff] [blame] | 540 | case DeviceRequest | USB_REQ_GET_DESCRIPTOR: |
| 541 | if ((wValue & 0xff00) != (USB_DT_BOS << 8)) |
| 542 | goto error; |
| 543 | |
| 544 | if (hcd->speed != HCD_USB3) |
| 545 | goto error; |
| 546 | |
Sarah Sharp | af3a23e | 2012-06-25 08:24:30 -0700 | [diff] [blame] | 547 | /* Set the U1 and U2 exit latencies. */ |
Sarah Sharp | 48e8236 | 2011-10-06 11:54:23 -0700 | [diff] [blame] | 548 | memcpy(buf, &usb_bos_descriptor, |
| 549 | USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE); |
| 550 | temp = xhci_readl(xhci, &xhci->cap_regs->hcs_params3); |
| 551 | buf[12] = HCS_U1_LATENCY(temp); |
| 552 | put_unaligned_le16(HCS_U2_LATENCY(temp), &buf[13]); |
| 553 | |
Sarah Sharp | af3a23e | 2012-06-25 08:24:30 -0700 | [diff] [blame] | 554 | /* Indicate whether the host has LTM support. */ |
| 555 | temp = xhci_readl(xhci, &xhci->cap_regs->hcc_params); |
| 556 | if (HCC_LTC(temp)) |
| 557 | buf[8] |= USB_LTM_SUPPORT; |
| 558 | |
Sarah Sharp | 48e8236 | 2011-10-06 11:54:23 -0700 | [diff] [blame] | 559 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 560 | return USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 561 | case GetPortStatus: |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 562 | if (!wIndex || wIndex > max_ports) |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 563 | goto error; |
| 564 | wIndex--; |
| 565 | status = 0; |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 566 | temp = xhci_readl(xhci, port_array[wIndex]); |
Sarah Sharp | f9de815 | 2010-10-29 14:37:23 -0700 | [diff] [blame] | 567 | if (temp == 0xffffffff) { |
| 568 | retval = -ENODEV; |
| 569 | break; |
| 570 | } |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 571 | xhci_dbg(xhci, "get port status, actual port %d status = 0x%x\n", wIndex, temp); |
| 572 | |
| 573 | /* wPortChange bits */ |
| 574 | if (temp & PORT_CSC) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 575 | status |= USB_PORT_STAT_C_CONNECTION << 16; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 576 | if (temp & PORT_PEC) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 577 | status |= USB_PORT_STAT_C_ENABLE << 16; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 578 | if ((temp & PORT_OCC)) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 579 | status |= USB_PORT_STAT_C_OVERCURRENT << 16; |
Andiry Xu | 0ed9a57 | 2011-04-27 18:07:43 +0800 | [diff] [blame] | 580 | if ((temp & PORT_RC)) |
| 581 | status |= USB_PORT_STAT_C_RESET << 16; |
| 582 | /* USB3.0 only */ |
| 583 | if (hcd->speed == HCD_USB3) { |
| 584 | if ((temp & PORT_PLC)) |
| 585 | status |= USB_PORT_STAT_C_LINK_STATE << 16; |
| 586 | if ((temp & PORT_WRC)) |
| 587 | status |= USB_PORT_STAT_C_BH_RESET << 16; |
| 588 | } |
| 589 | |
| 590 | if (hcd->speed != HCD_USB3) { |
| 591 | if ((temp & PORT_PLS_MASK) == XDEV_U3 |
| 592 | && (temp & PORT_POWER)) |
| 593 | status |= USB_PORT_STAT_SUSPEND; |
| 594 | } |
Andiry Xu | 8a8ff2f | 2011-08-03 16:46:49 +0800 | [diff] [blame] | 595 | if ((temp & PORT_PLS_MASK) == XDEV_RESUME && |
| 596 | !DEV_SUPERSPEED(temp)) { |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 597 | if ((temp & PORT_RESET) || !(temp & PORT_PE)) |
| 598 | goto error; |
Andiry Xu | 8a8ff2f | 2011-08-03 16:46:49 +0800 | [diff] [blame] | 599 | if (time_after_eq(jiffies, |
| 600 | bus_state->resume_done[wIndex])) { |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 601 | xhci_dbg(xhci, "Resume USB2 port %d\n", |
| 602 | wIndex + 1); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 603 | bus_state->resume_done[wIndex] = 0; |
Andiry Xu | f370b99 | 2012-04-14 02:54:30 +0800 | [diff] [blame] | 604 | clear_bit(wIndex, &bus_state->resuming_ports); |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 605 | xhci_set_link_state(xhci, port_array, wIndex, |
| 606 | XDEV_U0); |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 607 | xhci_dbg(xhci, "set port %d resume\n", |
| 608 | wIndex + 1); |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 609 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 610 | wIndex + 1); |
| 611 | if (!slot_id) { |
| 612 | xhci_dbg(xhci, "slot_id is zero\n"); |
| 613 | goto error; |
| 614 | } |
| 615 | xhci_ring_device(xhci, slot_id); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 616 | bus_state->port_c_suspend |= 1 << wIndex; |
| 617 | bus_state->suspended_ports &= ~(1 << wIndex); |
Andiry Xu | 8a8ff2f | 2011-08-03 16:46:49 +0800 | [diff] [blame] | 618 | } else { |
| 619 | /* |
| 620 | * The resume has been signaling for less than |
| 621 | * 20ms. Report the port status as SUSPEND, |
| 622 | * let the usbcore check port status again |
| 623 | * and clear resume signaling later. |
| 624 | */ |
| 625 | status |= USB_PORT_STAT_SUSPEND; |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 626 | } |
| 627 | } |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 628 | if ((temp & PORT_PLS_MASK) == XDEV_U0 |
| 629 | && (temp & PORT_POWER) |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 630 | && (bus_state->suspended_ports & (1 << wIndex))) { |
| 631 | bus_state->suspended_ports &= ~(1 << wIndex); |
Andiry Xu | a711423 | 2011-04-27 18:07:50 +0800 | [diff] [blame] | 632 | if (hcd->speed != HCD_USB3) |
| 633 | bus_state->port_c_suspend |= 1 << wIndex; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 634 | } |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 635 | if (temp & PORT_CONNECT) { |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 636 | status |= USB_PORT_STAT_CONNECTION; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 637 | status |= xhci_port_speed(temp); |
| 638 | } |
| 639 | if (temp & PORT_PE) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 640 | status |= USB_PORT_STAT_ENABLE; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 641 | if (temp & PORT_OC) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 642 | status |= USB_PORT_STAT_OVERCURRENT; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 643 | if (temp & PORT_RESET) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 644 | status |= USB_PORT_STAT_RESET; |
Andiry Xu | 0ed9a57 | 2011-04-27 18:07:43 +0800 | [diff] [blame] | 645 | if (temp & PORT_POWER) { |
| 646 | if (hcd->speed == HCD_USB3) |
| 647 | status |= USB_SS_PORT_STAT_POWER; |
| 648 | else |
| 649 | status |= USB_PORT_STAT_POWER; |
| 650 | } |
Stanislaw Ledwon | 8bea2bd | 2012-06-18 15:20:00 +0200 | [diff] [blame] | 651 | /* Update Port Link State for super speed ports*/ |
Andiry Xu | 0ed9a57 | 2011-04-27 18:07:43 +0800 | [diff] [blame] | 652 | if (hcd->speed == HCD_USB3) { |
Stanislaw Ledwon | 8bea2bd | 2012-06-18 15:20:00 +0200 | [diff] [blame] | 653 | xhci_hub_report_link_state(&status, temp); |
Andiry Xu | 0ed9a57 | 2011-04-27 18:07:43 +0800 | [diff] [blame] | 654 | } |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 655 | if (bus_state->port_c_suspend & (1 << wIndex)) |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 656 | status |= 1 << USB_PORT_FEAT_C_SUSPEND; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 657 | xhci_dbg(xhci, "Get port status returned 0x%x\n", status); |
| 658 | put_unaligned(cpu_to_le32(status), (__le32 *) buf); |
| 659 | break; |
| 660 | case SetPortFeature: |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 661 | if (wValue == USB_PORT_FEAT_LINK_STATE) |
| 662 | link_state = (wIndex & 0xff00) >> 3; |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 663 | if (wValue == USB_PORT_FEAT_REMOTE_WAKE_MASK) |
| 664 | wake_mask = wIndex & 0xff00; |
Sarah Sharp | 797b0ca | 2011-11-10 16:02:13 -0800 | [diff] [blame] | 665 | /* The MSB of wIndex is the U1/U2 timeout */ |
| 666 | timeout = (wIndex & 0xff00) >> 8; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 667 | wIndex &= 0xff; |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 668 | if (!wIndex || wIndex > max_ports) |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 669 | goto error; |
| 670 | wIndex--; |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 671 | temp = xhci_readl(xhci, port_array[wIndex]); |
Sarah Sharp | f9de815 | 2010-10-29 14:37:23 -0700 | [diff] [blame] | 672 | if (temp == 0xffffffff) { |
| 673 | retval = -ENODEV; |
| 674 | break; |
| 675 | } |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 676 | temp = xhci_port_state_to_neutral(temp); |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 677 | /* FIXME: What new port features do we need to support? */ |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 678 | switch (wValue) { |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 679 | case USB_PORT_FEAT_SUSPEND: |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 680 | temp = xhci_readl(xhci, port_array[wIndex]); |
Andiry Xu | 65580b43 | 2011-09-23 14:19:52 -0700 | [diff] [blame] | 681 | if ((temp & PORT_PLS_MASK) != XDEV_U0) { |
| 682 | /* Resume the port to U0 first */ |
| 683 | xhci_set_link_state(xhci, port_array, wIndex, |
| 684 | XDEV_U0); |
| 685 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 686 | msleep(10); |
| 687 | spin_lock_irqsave(&xhci->lock, flags); |
| 688 | } |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 689 | /* In spec software should not attempt to suspend |
| 690 | * a port unless the port reports that it is in the |
| 691 | * enabled (PED = ‘1’,PLS < ‘3’) state. |
| 692 | */ |
Andiry Xu | 65580b43 | 2011-09-23 14:19:52 -0700 | [diff] [blame] | 693 | temp = xhci_readl(xhci, port_array[wIndex]); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 694 | if ((temp & PORT_PE) == 0 || (temp & PORT_RESET) |
| 695 | || (temp & PORT_PLS_MASK) >= XDEV_U3) { |
| 696 | xhci_warn(xhci, "USB core suspending device " |
| 697 | "not in U0/U1/U2.\n"); |
| 698 | goto error; |
| 699 | } |
| 700 | |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 701 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
| 702 | wIndex + 1); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 703 | if (!slot_id) { |
| 704 | xhci_warn(xhci, "slot_id is zero\n"); |
| 705 | goto error; |
| 706 | } |
| 707 | /* unlock to execute stop endpoint commands */ |
| 708 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 709 | xhci_stop_device(xhci, slot_id, 1); |
| 710 | spin_lock_irqsave(&xhci->lock, flags); |
| 711 | |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 712 | xhci_set_link_state(xhci, port_array, wIndex, XDEV_U3); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 713 | |
| 714 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 715 | msleep(10); /* wait device to enter */ |
| 716 | spin_lock_irqsave(&xhci->lock, flags); |
| 717 | |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 718 | temp = xhci_readl(xhci, port_array[wIndex]); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 719 | bus_state->suspended_ports |= 1 << wIndex; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 720 | break; |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 721 | case USB_PORT_FEAT_LINK_STATE: |
| 722 | temp = xhci_readl(xhci, port_array[wIndex]); |
| 723 | /* Software should not attempt to set |
| 724 | * port link state above '5' (Rx.Detect) and the port |
| 725 | * must be enabled. |
| 726 | */ |
| 727 | if ((temp & PORT_PE) == 0 || |
| 728 | (link_state > USB_SS_PORT_LS_RX_DETECT)) { |
| 729 | xhci_warn(xhci, "Cannot set link state.\n"); |
| 730 | goto error; |
| 731 | } |
| 732 | |
| 733 | if (link_state == USB_SS_PORT_LS_U3) { |
| 734 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
| 735 | wIndex + 1); |
| 736 | if (slot_id) { |
| 737 | /* unlock to execute stop endpoint |
| 738 | * commands */ |
| 739 | spin_unlock_irqrestore(&xhci->lock, |
| 740 | flags); |
| 741 | xhci_stop_device(xhci, slot_id, 1); |
| 742 | spin_lock_irqsave(&xhci->lock, flags); |
| 743 | } |
| 744 | } |
| 745 | |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 746 | xhci_set_link_state(xhci, port_array, wIndex, |
| 747 | link_state); |
Andiry Xu | 2c44178 | 2011-04-27 18:07:39 +0800 | [diff] [blame] | 748 | |
| 749 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 750 | msleep(20); /* wait device to enter */ |
| 751 | spin_lock_irqsave(&xhci->lock, flags); |
| 752 | |
| 753 | temp = xhci_readl(xhci, port_array[wIndex]); |
| 754 | if (link_state == USB_SS_PORT_LS_U3) |
| 755 | bus_state->suspended_ports |= 1 << wIndex; |
| 756 | break; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 757 | case USB_PORT_FEAT_POWER: |
| 758 | /* |
| 759 | * Turn on ports, even if there isn't per-port switching. |
| 760 | * HC will report connect events even before this is set. |
| 761 | * However, khubd will ignore the roothub events until |
| 762 | * the roothub is registered. |
| 763 | */ |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 764 | xhci_writel(xhci, temp | PORT_POWER, |
| 765 | port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 766 | |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 767 | temp = xhci_readl(xhci, port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 768 | 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] | 769 | |
| 770 | temp = usb_acpi_power_manageable(hcd->self.root_hub, |
| 771 | wIndex); |
| 772 | if (temp) |
| 773 | usb_acpi_set_power_state(hcd->self.root_hub, |
| 774 | wIndex, true); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 775 | break; |
| 776 | case USB_PORT_FEAT_RESET: |
| 777 | temp = (temp | PORT_RESET); |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 778 | xhci_writel(xhci, temp, port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 779 | |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 780 | temp = xhci_readl(xhci, port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 781 | xhci_dbg(xhci, "set port reset, actual port %d status = 0x%x\n", wIndex, temp); |
| 782 | break; |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 783 | case USB_PORT_FEAT_REMOTE_WAKE_MASK: |
| 784 | xhci_set_remote_wake_mask(xhci, port_array, |
| 785 | wIndex, wake_mask); |
| 786 | temp = xhci_readl(xhci, port_array[wIndex]); |
| 787 | xhci_dbg(xhci, "set port remote wake mask, " |
| 788 | "actual port %d status = 0x%x\n", |
| 789 | wIndex, temp); |
| 790 | break; |
Andiry Xu | a11496e | 2011-04-27 18:07:29 +0800 | [diff] [blame] | 791 | case USB_PORT_FEAT_BH_PORT_RESET: |
| 792 | temp |= PORT_WR; |
| 793 | xhci_writel(xhci, temp, port_array[wIndex]); |
| 794 | |
| 795 | temp = xhci_readl(xhci, port_array[wIndex]); |
| 796 | break; |
Sarah Sharp | 797b0ca | 2011-11-10 16:02:13 -0800 | [diff] [blame] | 797 | case USB_PORT_FEAT_U1_TIMEOUT: |
| 798 | if (hcd->speed != HCD_USB3) |
| 799 | goto error; |
| 800 | temp = xhci_readl(xhci, port_array[wIndex] + 1); |
| 801 | temp &= ~PORT_U1_TIMEOUT_MASK; |
| 802 | temp |= PORT_U1_TIMEOUT(timeout); |
| 803 | xhci_writel(xhci, temp, port_array[wIndex] + 1); |
| 804 | break; |
| 805 | case USB_PORT_FEAT_U2_TIMEOUT: |
| 806 | if (hcd->speed != HCD_USB3) |
| 807 | goto error; |
| 808 | temp = xhci_readl(xhci, port_array[wIndex] + 1); |
| 809 | temp &= ~PORT_U2_TIMEOUT_MASK; |
| 810 | temp |= PORT_U2_TIMEOUT(timeout); |
| 811 | xhci_writel(xhci, temp, port_array[wIndex] + 1); |
| 812 | break; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 813 | default: |
| 814 | goto error; |
| 815 | } |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 816 | /* unblock any posted writes */ |
| 817 | temp = xhci_readl(xhci, port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 818 | break; |
| 819 | case ClearPortFeature: |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 820 | if (!wIndex || wIndex > max_ports) |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 821 | goto error; |
| 822 | wIndex--; |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 823 | temp = xhci_readl(xhci, port_array[wIndex]); |
Sarah Sharp | f9de815 | 2010-10-29 14:37:23 -0700 | [diff] [blame] | 824 | if (temp == 0xffffffff) { |
| 825 | retval = -ENODEV; |
| 826 | break; |
| 827 | } |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 828 | /* FIXME: What new port features do we need to support? */ |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 829 | temp = xhci_port_state_to_neutral(temp); |
| 830 | switch (wValue) { |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 831 | case USB_PORT_FEAT_SUSPEND: |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 832 | temp = xhci_readl(xhci, port_array[wIndex]); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 833 | xhci_dbg(xhci, "clear USB_PORT_FEAT_SUSPEND\n"); |
| 834 | xhci_dbg(xhci, "PORTSC %04x\n", temp); |
| 835 | if (temp & PORT_RESET) |
| 836 | goto error; |
Andiry Xu | 5ac04bf | 2011-08-03 16:46:48 +0800 | [diff] [blame] | 837 | if ((temp & PORT_PLS_MASK) == XDEV_U3) { |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 838 | if ((temp & PORT_PE) == 0) |
| 839 | goto error; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 840 | |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 841 | xhci_set_link_state(xhci, port_array, wIndex, |
| 842 | XDEV_RESUME); |
| 843 | spin_unlock_irqrestore(&xhci->lock, flags); |
Andiry Xu | a711423 | 2011-04-27 18:07:50 +0800 | [diff] [blame] | 844 | msleep(20); |
| 845 | spin_lock_irqsave(&xhci->lock, flags); |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 846 | xhci_set_link_state(xhci, port_array, wIndex, |
| 847 | XDEV_U0); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 848 | } |
Andiry Xu | a711423 | 2011-04-27 18:07:50 +0800 | [diff] [blame] | 849 | bus_state->port_c_suspend |= 1 << wIndex; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 850 | |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 851 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
| 852 | wIndex + 1); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 853 | if (!slot_id) { |
| 854 | xhci_dbg(xhci, "slot_id is zero\n"); |
| 855 | goto error; |
| 856 | } |
| 857 | xhci_ring_device(xhci, slot_id); |
| 858 | break; |
| 859 | case USB_PORT_FEAT_C_SUSPEND: |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 860 | bus_state->port_c_suspend &= ~(1 << wIndex); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 861 | case USB_PORT_FEAT_C_RESET: |
Andiry Xu | a11496e | 2011-04-27 18:07:29 +0800 | [diff] [blame] | 862 | case USB_PORT_FEAT_C_BH_PORT_RESET: |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 863 | case USB_PORT_FEAT_C_CONNECTION: |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 864 | case USB_PORT_FEAT_C_OVER_CURRENT: |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 865 | case USB_PORT_FEAT_C_ENABLE: |
Andiry Xu | 85387c0 | 2011-04-27 18:07:35 +0800 | [diff] [blame] | 866 | case USB_PORT_FEAT_C_PORT_LINK_STATE: |
Sarah Sharp | 34fb562 | 2009-12-09 15:59:08 -0800 | [diff] [blame] | 867 | xhci_clear_port_change_bit(xhci, wValue, wIndex, |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 868 | port_array[wIndex], temp); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 869 | break; |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 870 | case USB_PORT_FEAT_ENABLE: |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 871 | xhci_disable_port(hcd, xhci, wIndex, |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 872 | port_array[wIndex], temp); |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 873 | break; |
Lan Tianyu | 693d8eb | 2012-09-05 13:44:35 +0800 | [diff] [blame] | 874 | case USB_PORT_FEAT_POWER: |
| 875 | xhci_writel(xhci, temp & ~PORT_POWER, |
| 876 | port_array[wIndex]); |
Lan Tianyu | f7ac778 | 2012-09-05 13:44:36 +0800 | [diff] [blame] | 877 | |
| 878 | temp = usb_acpi_power_manageable(hcd->self.root_hub, |
| 879 | wIndex); |
| 880 | if (temp) |
| 881 | usb_acpi_set_power_state(hcd->self.root_hub, |
| 882 | wIndex, false); |
Lan Tianyu | 693d8eb | 2012-09-05 13:44:35 +0800 | [diff] [blame] | 883 | break; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 884 | default: |
| 885 | goto error; |
| 886 | } |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 887 | break; |
| 888 | default: |
| 889 | error: |
| 890 | /* "stall" on error */ |
| 891 | retval = -EPIPE; |
| 892 | } |
| 893 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 894 | return retval; |
| 895 | } |
| 896 | |
| 897 | /* |
| 898 | * Returns 0 if the status hasn't changed, or the number of bytes in buf. |
| 899 | * Ports are 0-indexed from the HCD point of view, |
| 900 | * and 1-indexed from the USB core pointer of view. |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 901 | * |
| 902 | * Note that the status change bits will be cleared as soon as a port status |
| 903 | * change event is generated, so we use the saved status from that event. |
| 904 | */ |
| 905 | int xhci_hub_status_data(struct usb_hcd *hcd, char *buf) |
| 906 | { |
| 907 | unsigned long flags; |
| 908 | u32 temp, status; |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 909 | u32 mask; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 910 | int i, retval; |
| 911 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 912 | int max_ports; |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 913 | __le32 __iomem **port_array; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 914 | struct xhci_bus_state *bus_state; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 915 | |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 916 | max_ports = xhci_get_ports(hcd, &port_array); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 917 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 918 | |
| 919 | /* Initial status is no changes */ |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 920 | retval = (max_ports + 8) / 8; |
William Gulland | 419a8e81 | 2010-05-12 10:20:34 -0700 | [diff] [blame] | 921 | memset(buf, 0, retval); |
Andiry Xu | f370b99 | 2012-04-14 02:54:30 +0800 | [diff] [blame] | 922 | |
| 923 | /* |
| 924 | * Inform the usbcore about resume-in-progress by returning |
| 925 | * a non-zero value even if there are no status changes. |
| 926 | */ |
| 927 | status = bus_state->resuming_ports; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 928 | |
Greg KH | 44f4c3e | 2011-09-19 16:05:11 -0700 | [diff] [blame] | 929 | mask = PORT_CSC | PORT_PEC | PORT_OCC | PORT_PLC | PORT_WRC; |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 930 | |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 931 | spin_lock_irqsave(&xhci->lock, flags); |
| 932 | /* 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] | 933 | for (i = 0; i < max_ports; i++) { |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 934 | temp = xhci_readl(xhci, port_array[i]); |
Sarah Sharp | f9de815 | 2010-10-29 14:37:23 -0700 | [diff] [blame] | 935 | if (temp == 0xffffffff) { |
| 936 | retval = -ENODEV; |
| 937 | break; |
| 938 | } |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 939 | if ((temp & mask) != 0 || |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 940 | (bus_state->port_c_suspend & 1 << i) || |
| 941 | (bus_state->resume_done[i] && time_after_eq( |
| 942 | jiffies, bus_state->resume_done[i]))) { |
William Gulland | 419a8e81 | 2010-05-12 10:20:34 -0700 | [diff] [blame] | 943 | buf[(i + 1) / 8] |= 1 << (i + 1) % 8; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 944 | status = 1; |
| 945 | } |
| 946 | } |
| 947 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 948 | return status ? retval : 0; |
| 949 | } |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 950 | |
| 951 | #ifdef CONFIG_PM |
| 952 | |
| 953 | int xhci_bus_suspend(struct usb_hcd *hcd) |
| 954 | { |
| 955 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 956 | int max_ports, port_index; |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 957 | __le32 __iomem **port_array; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 958 | struct xhci_bus_state *bus_state; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 959 | unsigned long flags; |
| 960 | |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 961 | max_ports = xhci_get_ports(hcd, &port_array); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 962 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 963 | |
| 964 | spin_lock_irqsave(&xhci->lock, flags); |
| 965 | |
| 966 | if (hcd->self.root_hub->do_remote_wakeup) { |
Andiry Xu | f370b99 | 2012-04-14 02:54:30 +0800 | [diff] [blame] | 967 | if (bus_state->resuming_ports) { |
| 968 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 969 | xhci_dbg(xhci, "suspend failed because " |
| 970 | "a port is resuming\n"); |
| 971 | return -EBUSY; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 972 | } |
| 973 | } |
| 974 | |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 975 | port_index = max_ports; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 976 | bus_state->bus_suspended = 0; |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 977 | while (port_index--) { |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 978 | /* suspend the port if the port is not suspended */ |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 979 | u32 t1, t2; |
| 980 | int slot_id; |
| 981 | |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 982 | t1 = xhci_readl(xhci, port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 983 | t2 = xhci_port_state_to_neutral(t1); |
| 984 | |
| 985 | if ((t1 & PORT_PE) && !(t1 & PORT_PLS_MASK)) { |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 986 | xhci_dbg(xhci, "port %d not suspended\n", port_index); |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 987 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 988 | port_index + 1); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 989 | if (slot_id) { |
| 990 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 991 | xhci_stop_device(xhci, slot_id, 1); |
| 992 | spin_lock_irqsave(&xhci->lock, flags); |
| 993 | } |
| 994 | t2 &= ~PORT_PLS_MASK; |
| 995 | t2 |= PORT_LINK_STROBE | XDEV_U3; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 996 | set_bit(port_index, &bus_state->bus_suspended); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 997 | } |
Sarah Sharp | 4296c70a | 2012-01-06 10:34:31 -0800 | [diff] [blame] | 998 | /* USB core sets remote wake mask for USB 3.0 hubs, |
| 999 | * including the USB 3.0 roothub, but only if CONFIG_USB_SUSPEND |
| 1000 | * is enabled, so also enable remote wake here. |
| 1001 | */ |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1002 | if (hcd->self.root_hub->do_remote_wakeup) { |
| 1003 | if (t1 & PORT_CONNECT) { |
| 1004 | t2 |= PORT_WKOC_E | PORT_WKDISC_E; |
| 1005 | t2 &= ~PORT_WKCONN_E; |
| 1006 | } else { |
| 1007 | t2 |= PORT_WKOC_E | PORT_WKCONN_E; |
| 1008 | t2 &= ~PORT_WKDISC_E; |
| 1009 | } |
| 1010 | } else |
| 1011 | t2 &= ~PORT_WAKE_BITS; |
| 1012 | |
| 1013 | t1 = xhci_port_state_to_neutral(t1); |
| 1014 | if (t1 != t2) |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 1015 | xhci_writel(xhci, t2, port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1016 | |
Andiry Xu | 4f0871a | 2011-04-19 17:17:39 +0800 | [diff] [blame] | 1017 | if (hcd->speed != HCD_USB3) { |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1018 | /* enable remote wake up for USB 2.0 */ |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 1019 | __le32 __iomem *addr; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1020 | u32 tmp; |
| 1021 | |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 1022 | /* Add one to the port status register address to get |
| 1023 | * the port power control register address. |
| 1024 | */ |
| 1025 | addr = port_array[port_index] + 1; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1026 | tmp = xhci_readl(xhci, addr); |
| 1027 | tmp |= PORT_RWE; |
| 1028 | xhci_writel(xhci, tmp, addr); |
| 1029 | } |
| 1030 | } |
| 1031 | hcd->state = HC_STATE_SUSPENDED; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1032 | bus_state->next_statechange = jiffies + msecs_to_jiffies(10); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1033 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1034 | return 0; |
| 1035 | } |
| 1036 | |
| 1037 | int xhci_bus_resume(struct usb_hcd *hcd) |
| 1038 | { |
| 1039 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 1040 | int max_ports, port_index; |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 1041 | __le32 __iomem **port_array; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1042 | struct xhci_bus_state *bus_state; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1043 | u32 temp; |
| 1044 | unsigned long flags; |
| 1045 | |
huajun li | a088592 | 2011-05-03 21:11:00 +0800 | [diff] [blame] | 1046 | max_ports = xhci_get_ports(hcd, &port_array); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1047 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1048 | |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1049 | if (time_before(jiffies, bus_state->next_statechange)) |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1050 | msleep(5); |
| 1051 | |
| 1052 | spin_lock_irqsave(&xhci->lock, flags); |
| 1053 | if (!HCD_HW_ACCESSIBLE(hcd)) { |
| 1054 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1055 | return -ESHUTDOWN; |
| 1056 | } |
| 1057 | |
| 1058 | /* delay the irqs */ |
| 1059 | temp = xhci_readl(xhci, &xhci->op_regs->command); |
| 1060 | temp &= ~CMD_EIE; |
| 1061 | xhci_writel(xhci, temp, &xhci->op_regs->command); |
| 1062 | |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 1063 | port_index = max_ports; |
| 1064 | while (port_index--) { |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1065 | /* Check whether need resume ports. If needed |
| 1066 | resume port and disable remote wakeup */ |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1067 | u32 temp; |
| 1068 | int slot_id; |
| 1069 | |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 1070 | temp = xhci_readl(xhci, port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1071 | if (DEV_SUPERSPEED(temp)) |
| 1072 | temp &= ~(PORT_RWC_BITS | PORT_CEC | PORT_WAKE_BITS); |
| 1073 | else |
| 1074 | temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1075 | if (test_bit(port_index, &bus_state->bus_suspended) && |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1076 | (temp & PORT_PLS_MASK)) { |
| 1077 | if (DEV_SUPERSPEED(temp)) { |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 1078 | xhci_set_link_state(xhci, port_array, |
| 1079 | port_index, XDEV_U0); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1080 | } else { |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 1081 | xhci_set_link_state(xhci, port_array, |
| 1082 | port_index, XDEV_RESUME); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1083 | |
| 1084 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1085 | msleep(20); |
| 1086 | spin_lock_irqsave(&xhci->lock, flags); |
| 1087 | |
Andiry Xu | c9682df | 2011-09-23 14:19:48 -0700 | [diff] [blame] | 1088 | xhci_set_link_state(xhci, port_array, |
| 1089 | port_index, XDEV_U0); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1090 | } |
Andiry Xu | 4f0871a | 2011-04-19 17:17:39 +0800 | [diff] [blame] | 1091 | /* wait for the port to enter U0 and report port link |
| 1092 | * state change. |
| 1093 | */ |
| 1094 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1095 | msleep(20); |
| 1096 | spin_lock_irqsave(&xhci->lock, flags); |
| 1097 | |
| 1098 | /* Clear PLC */ |
Andiry Xu | d2f52c9 | 2011-09-23 14:19:49 -0700 | [diff] [blame] | 1099 | xhci_test_and_clear_bit(xhci, port_array, port_index, |
| 1100 | PORT_PLC); |
Andiry Xu | 4f0871a | 2011-04-19 17:17:39 +0800 | [diff] [blame] | 1101 | |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 1102 | slot_id = xhci_find_slot_id_by_port(hcd, |
| 1103 | xhci, port_index + 1); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1104 | if (slot_id) |
| 1105 | xhci_ring_device(xhci, slot_id); |
| 1106 | } else |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 1107 | xhci_writel(xhci, temp, port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1108 | |
Andiry Xu | 4f0871a | 2011-04-19 17:17:39 +0800 | [diff] [blame] | 1109 | if (hcd->speed != HCD_USB3) { |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1110 | /* disable remote wake up for USB 2.0 */ |
Matt Evans | 28ccd29 | 2011-03-29 13:40:46 +1100 | [diff] [blame] | 1111 | __le32 __iomem *addr; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1112 | u32 tmp; |
| 1113 | |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 1114 | /* Add one to the port status register address to get |
| 1115 | * the port power control register address. |
| 1116 | */ |
| 1117 | addr = port_array[port_index] + 1; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1118 | tmp = xhci_readl(xhci, addr); |
| 1119 | tmp &= ~PORT_RWE; |
| 1120 | xhci_writel(xhci, tmp, addr); |
| 1121 | } |
| 1122 | } |
| 1123 | |
| 1124 | (void) xhci_readl(xhci, &xhci->op_regs->command); |
| 1125 | |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 1126 | bus_state->next_statechange = jiffies + msecs_to_jiffies(5); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 1127 | /* re-enable irqs */ |
| 1128 | temp = xhci_readl(xhci, &xhci->op_regs->command); |
| 1129 | temp |= CMD_EIE; |
| 1130 | xhci_writel(xhci, temp, &xhci->op_regs->command); |
| 1131 | temp = xhci_readl(xhci, &xhci->op_regs->command); |
| 1132 | |
| 1133 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 1134 | return 0; |
| 1135 | } |
| 1136 | |
Sarah Sharp | 436a389 | 2010-10-15 14:59:15 -0700 | [diff] [blame] | 1137 | #endif /* CONFIG_PM */ |