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 | |
| 23 | #include <asm/unaligned.h> |
| 24 | |
| 25 | #include "xhci.h" |
| 26 | |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 27 | #define PORT_WAKE_BITS (PORT_WKOC_E | PORT_WKDISC_E | PORT_WKCONN_E) |
| 28 | #define PORT_RWC_BITS (PORT_CSC | PORT_PEC | PORT_WRC | PORT_OCC | \ |
| 29 | PORT_RC | PORT_PLC | PORT_PE) |
| 30 | |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 31 | static void xhci_common_hub_descriptor(struct xhci_hcd *xhci, |
| 32 | struct usb_hub_descriptor *desc, int ports) |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 33 | { |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 34 | u16 temp; |
| 35 | |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 36 | desc->bPwrOn2PwrGood = 10; /* xhci section 5.4.9 says 20ms max */ |
| 37 | desc->bHubContrCurrent = 0; |
| 38 | |
| 39 | desc->bNbrPorts = ports; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 40 | /* Ugh, these should be #defines, FIXME */ |
| 41 | /* Using table 11-13 in USB 2.0 spec. */ |
| 42 | temp = 0; |
| 43 | /* Bits 1:0 - support port power switching, or power always on */ |
| 44 | if (HCC_PPC(xhci->hcc_params)) |
| 45 | temp |= 0x0001; |
| 46 | else |
| 47 | temp |= 0x0002; |
| 48 | /* Bit 2 - root hubs are not part of a compound device */ |
| 49 | /* Bits 4:3 - individual port over current protection */ |
| 50 | temp |= 0x0008; |
| 51 | /* Bits 6:5 - no TTs in root ports */ |
| 52 | /* Bit 7 - no port indicators */ |
| 53 | desc->wHubCharacteristics = (__force __u16) cpu_to_le16(temp); |
| 54 | } |
| 55 | |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 56 | /* Fill in the USB 2.0 roothub descriptor */ |
| 57 | static void xhci_usb2_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
| 58 | struct usb_hub_descriptor *desc) |
| 59 | { |
| 60 | int ports; |
| 61 | u16 temp; |
| 62 | __u8 port_removable[(USB_MAXCHILDREN + 1 + 7) / 8]; |
| 63 | u32 portsc; |
| 64 | unsigned int i; |
| 65 | |
| 66 | ports = xhci->num_usb2_ports; |
| 67 | |
| 68 | xhci_common_hub_descriptor(xhci, desc, ports); |
| 69 | desc->bDescriptorType = 0x29; |
| 70 | temp = 1 + (ports / 8); |
| 71 | desc->bDescLength = 7 + 2 * temp; |
| 72 | |
| 73 | /* The Device Removable bits are reported on a byte granularity. |
| 74 | * If the port doesn't exist within that byte, the bit is set to 0. |
| 75 | */ |
| 76 | memset(port_removable, 0, sizeof(port_removable)); |
| 77 | for (i = 0; i < ports; i++) { |
| 78 | portsc = xhci_readl(xhci, xhci->usb3_ports[i]); |
| 79 | /* If a device is removable, PORTSC reports a 0, same as in the |
| 80 | * hub descriptor DeviceRemovable bits. |
| 81 | */ |
| 82 | if (portsc & PORT_DEV_REMOVE) |
| 83 | /* This math is hairy because bit 0 of DeviceRemovable |
| 84 | * is reserved, and bit 1 is for port 1, etc. |
| 85 | */ |
| 86 | port_removable[(i + 1) / 8] |= 1 << ((i + 1) % 8); |
| 87 | } |
| 88 | |
| 89 | /* ch11.h defines a hub descriptor that has room for USB_MAXCHILDREN |
| 90 | * ports on it. The USB 2.0 specification says that there are two |
| 91 | * variable length fields at the end of the hub descriptor: |
| 92 | * DeviceRemovable and PortPwrCtrlMask. But since we can have less than |
| 93 | * USB_MAXCHILDREN ports, we may need to use the DeviceRemovable array |
| 94 | * to set PortPwrCtrlMask bits. PortPwrCtrlMask must always be set to |
| 95 | * 0xFF, so we initialize the both arrays (DeviceRemovable and |
| 96 | * PortPwrCtrlMask) to 0xFF. Then we set the DeviceRemovable for each |
| 97 | * set of ports that actually exist. |
| 98 | */ |
| 99 | memset(desc->u.hs.DeviceRemovable, 0xff, |
| 100 | sizeof(desc->u.hs.DeviceRemovable)); |
| 101 | memset(desc->u.hs.PortPwrCtrlMask, 0xff, |
| 102 | sizeof(desc->u.hs.PortPwrCtrlMask)); |
| 103 | |
| 104 | for (i = 0; i < (ports + 1 + 7) / 8; i++) |
| 105 | memset(&desc->u.hs.DeviceRemovable[i], port_removable[i], |
| 106 | sizeof(__u8)); |
| 107 | } |
| 108 | |
| 109 | /* Fill in the USB 3.0 roothub descriptor */ |
| 110 | static void xhci_usb3_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
| 111 | struct usb_hub_descriptor *desc) |
| 112 | { |
| 113 | int ports; |
| 114 | u16 port_removable; |
| 115 | u32 portsc; |
| 116 | unsigned int i; |
| 117 | |
| 118 | ports = xhci->num_usb3_ports; |
| 119 | xhci_common_hub_descriptor(xhci, desc, ports); |
| 120 | desc->bDescriptorType = 0x2a; |
| 121 | desc->bDescLength = 12; |
| 122 | |
| 123 | /* header decode latency should be zero for roothubs, |
| 124 | * see section 4.23.5.2. |
| 125 | */ |
| 126 | desc->u.ss.bHubHdrDecLat = 0; |
| 127 | desc->u.ss.wHubDelay = 0; |
| 128 | |
| 129 | port_removable = 0; |
| 130 | /* bit 0 is reserved, bit 1 is for port 1, etc. */ |
| 131 | for (i = 0; i < ports; i++) { |
| 132 | portsc = xhci_readl(xhci, xhci->usb3_ports[i]); |
| 133 | if (portsc & PORT_DEV_REMOVE) |
| 134 | port_removable |= 1 << (i + 1); |
| 135 | } |
| 136 | memset(&desc->u.ss.DeviceRemovable, |
| 137 | (__force __u16) cpu_to_le16(port_removable), |
| 138 | sizeof(__u16)); |
| 139 | } |
| 140 | |
| 141 | static void xhci_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
| 142 | struct usb_hub_descriptor *desc) |
| 143 | { |
| 144 | |
| 145 | if (hcd->speed == HCD_USB3) |
| 146 | xhci_usb3_hub_descriptor(hcd, xhci, desc); |
| 147 | else |
| 148 | xhci_usb2_hub_descriptor(hcd, xhci, desc); |
| 149 | |
| 150 | } |
| 151 | |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 152 | static unsigned int xhci_port_speed(unsigned int port_status) |
| 153 | { |
| 154 | if (DEV_LOWSPEED(port_status)) |
Alan Stern | 288ead4 | 2010-03-04 11:32:30 -0500 | [diff] [blame] | 155 | return USB_PORT_STAT_LOW_SPEED; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 156 | if (DEV_HIGHSPEED(port_status)) |
Alan Stern | 288ead4 | 2010-03-04 11:32:30 -0500 | [diff] [blame] | 157 | return USB_PORT_STAT_HIGH_SPEED; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 158 | /* |
| 159 | * FIXME: Yes, we should check for full speed, but the core uses that as |
| 160 | * 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] | 161 | * USB_PORT_STAT_*_SPEED is used). |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 162 | */ |
| 163 | return 0; |
| 164 | } |
| 165 | |
| 166 | /* |
| 167 | * These bits are Read Only (RO) and should be saved and written to the |
| 168 | * registers: 0, 3, 10:13, 30 |
| 169 | * connect status, over-current status, port speed, and device removable. |
| 170 | * connect status and port speed are also sticky - meaning they're in |
| 171 | * the AUX well and they aren't changed by a hot, warm, or cold reset. |
| 172 | */ |
| 173 | #define XHCI_PORT_RO ((1<<0) | (1<<3) | (0xf<<10) | (1<<30)) |
| 174 | /* |
| 175 | * These bits are RW; writing a 0 clears the bit, writing a 1 sets the bit: |
| 176 | * bits 5:8, 9, 14:15, 25:27 |
| 177 | * link state, port power, port indicator state, "wake on" enable state |
| 178 | */ |
| 179 | #define XHCI_PORT_RWS ((0xf<<5) | (1<<9) | (0x3<<14) | (0x7<<25)) |
| 180 | /* |
| 181 | * These bits are RW; writing a 1 sets the bit, writing a 0 has no effect: |
| 182 | * bit 4 (port reset) |
| 183 | */ |
| 184 | #define XHCI_PORT_RW1S ((1<<4)) |
| 185 | /* |
| 186 | * These bits are RW; writing a 1 clears the bit, writing a 0 has no effect: |
| 187 | * bits 1, 17, 18, 19, 20, 21, 22, 23 |
| 188 | * port enable/disable, and |
| 189 | * change bits: connect, PED, warm port reset changed (reserved zero for USB 2.0 ports), |
| 190 | * over-current, reset, link state, and L1 change |
| 191 | */ |
| 192 | #define XHCI_PORT_RW1CS ((1<<1) | (0x7f<<17)) |
| 193 | /* |
| 194 | * Bit 16 is RW, and writing a '1' to it causes the link state control to be |
| 195 | * latched in |
| 196 | */ |
| 197 | #define XHCI_PORT_RW ((1<<16)) |
| 198 | /* |
| 199 | * These bits are Reserved Zero (RsvdZ) and zero should be written to them: |
| 200 | * bits 2, 24, 28:31 |
| 201 | */ |
| 202 | #define XHCI_PORT_RZ ((1<<2) | (1<<24) | (0xf<<28)) |
| 203 | |
| 204 | /* |
| 205 | * Given a port state, this function returns a value that would result in the |
| 206 | * port being in the same state, if the value was written to the port status |
| 207 | * control register. |
| 208 | * Save Read Only (RO) bits and save read/write bits where |
| 209 | * writing a 0 clears the bit and writing a 1 sets the bit (RWS). |
| 210 | * For all other types (RW1S, RW1CS, RW, and RZ), writing a '0' has no effect. |
| 211 | */ |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 212 | u32 xhci_port_state_to_neutral(u32 state) |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 213 | { |
| 214 | /* Save read-only status and port state */ |
| 215 | return (state & XHCI_PORT_RO) | (state & XHCI_PORT_RWS); |
| 216 | } |
| 217 | |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 218 | /* |
| 219 | * find slot id based on port number. |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 220 | * @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] | 221 | */ |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 222 | int xhci_find_slot_id_by_port(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
| 223 | u16 port) |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 224 | { |
| 225 | int slot_id; |
| 226 | int i; |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 227 | enum usb_device_speed speed; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 228 | |
| 229 | slot_id = 0; |
| 230 | for (i = 0; i < MAX_HC_SLOTS; i++) { |
| 231 | if (!xhci->devs[i]) |
| 232 | continue; |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 233 | speed = xhci->devs[i]->udev->speed; |
| 234 | if (((speed == USB_SPEED_SUPER) == (hcd->speed == HCD_USB3)) |
| 235 | && xhci->devs[i]->port == port) { |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 236 | slot_id = i; |
| 237 | break; |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | return slot_id; |
| 242 | } |
| 243 | |
| 244 | /* |
| 245 | * Stop device |
| 246 | * It issues stop endpoint command for EP 0 to 30. And wait the last command |
| 247 | * to complete. |
| 248 | * suspend will set to 1, if suspend bit need to set in command. |
| 249 | */ |
| 250 | static int xhci_stop_device(struct xhci_hcd *xhci, int slot_id, int suspend) |
| 251 | { |
| 252 | struct xhci_virt_device *virt_dev; |
| 253 | struct xhci_command *cmd; |
| 254 | unsigned long flags; |
| 255 | int timeleft; |
| 256 | int ret; |
| 257 | int i; |
| 258 | |
| 259 | ret = 0; |
| 260 | virt_dev = xhci->devs[slot_id]; |
| 261 | cmd = xhci_alloc_command(xhci, false, true, GFP_NOIO); |
| 262 | if (!cmd) { |
| 263 | xhci_dbg(xhci, "Couldn't allocate command structure.\n"); |
| 264 | return -ENOMEM; |
| 265 | } |
| 266 | |
| 267 | spin_lock_irqsave(&xhci->lock, flags); |
| 268 | for (i = LAST_EP_INDEX; i > 0; i--) { |
| 269 | if (virt_dev->eps[i].ring && virt_dev->eps[i].ring->dequeue) |
| 270 | xhci_queue_stop_endpoint(xhci, slot_id, i, suspend); |
| 271 | } |
| 272 | cmd->command_trb = xhci->cmd_ring->enqueue; |
| 273 | list_add_tail(&cmd->cmd_list, &virt_dev->cmd_list); |
| 274 | xhci_queue_stop_endpoint(xhci, slot_id, 0, suspend); |
| 275 | xhci_ring_cmd_db(xhci); |
| 276 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 277 | |
| 278 | /* Wait for last stop endpoint command to finish */ |
| 279 | timeleft = wait_for_completion_interruptible_timeout( |
| 280 | cmd->completion, |
| 281 | USB_CTRL_SET_TIMEOUT); |
| 282 | if (timeleft <= 0) { |
| 283 | xhci_warn(xhci, "%s while waiting for stop endpoint command\n", |
| 284 | timeleft == 0 ? "Timeout" : "Signal"); |
| 285 | spin_lock_irqsave(&xhci->lock, flags); |
| 286 | /* The timeout might have raced with the event ring handler, so |
| 287 | * only delete from the list if the item isn't poisoned. |
| 288 | */ |
| 289 | if (cmd->cmd_list.next != LIST_POISON1) |
| 290 | list_del(&cmd->cmd_list); |
| 291 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 292 | ret = -ETIME; |
| 293 | goto command_cleanup; |
| 294 | } |
| 295 | |
| 296 | command_cleanup: |
| 297 | xhci_free_command(xhci, cmd); |
| 298 | return ret; |
| 299 | } |
| 300 | |
| 301 | /* |
| 302 | * Ring device, it rings the all doorbells unconditionally. |
| 303 | */ |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 304 | void xhci_ring_device(struct xhci_hcd *xhci, int slot_id) |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 305 | { |
| 306 | int i; |
| 307 | |
| 308 | for (i = 0; i < LAST_EP_INDEX + 1; i++) |
| 309 | if (xhci->devs[slot_id]->eps[i].ring && |
| 310 | xhci->devs[slot_id]->eps[i].ring->dequeue) |
| 311 | xhci_ring_ep_doorbell(xhci, slot_id, i, 0); |
| 312 | |
| 313 | return; |
| 314 | } |
| 315 | |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 316 | static void xhci_disable_port(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
| 317 | u16 wIndex, u32 __iomem *addr, u32 port_status) |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 318 | { |
Sarah Sharp | 6dd0a3a7 | 2010-11-16 15:58:52 -0800 | [diff] [blame] | 319 | /* Don't allow the USB core to disable SuperSpeed ports. */ |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 320 | if (hcd->speed == HCD_USB3) { |
Sarah Sharp | 6dd0a3a7 | 2010-11-16 15:58:52 -0800 | [diff] [blame] | 321 | xhci_dbg(xhci, "Ignoring request to disable " |
| 322 | "SuperSpeed port.\n"); |
| 323 | return; |
| 324 | } |
| 325 | |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 326 | /* Write 1 to disable the port */ |
| 327 | xhci_writel(xhci, port_status | PORT_PE, addr); |
| 328 | port_status = xhci_readl(xhci, addr); |
| 329 | xhci_dbg(xhci, "disable port, actual port %d status = 0x%x\n", |
| 330 | wIndex, port_status); |
| 331 | } |
| 332 | |
Sarah Sharp | 34fb562 | 2009-12-09 15:59:08 -0800 | [diff] [blame] | 333 | static void xhci_clear_port_change_bit(struct xhci_hcd *xhci, u16 wValue, |
| 334 | u16 wIndex, u32 __iomem *addr, u32 port_status) |
| 335 | { |
| 336 | char *port_change_bit; |
| 337 | u32 status; |
| 338 | |
| 339 | switch (wValue) { |
| 340 | case USB_PORT_FEAT_C_RESET: |
| 341 | status = PORT_RC; |
| 342 | port_change_bit = "reset"; |
| 343 | break; |
| 344 | case USB_PORT_FEAT_C_CONNECTION: |
| 345 | status = PORT_CSC; |
| 346 | port_change_bit = "connect"; |
| 347 | break; |
| 348 | case USB_PORT_FEAT_C_OVER_CURRENT: |
| 349 | status = PORT_OCC; |
| 350 | port_change_bit = "over-current"; |
| 351 | break; |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 352 | case USB_PORT_FEAT_C_ENABLE: |
| 353 | status = PORT_PEC; |
| 354 | port_change_bit = "enable/disable"; |
| 355 | break; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 356 | case USB_PORT_FEAT_C_SUSPEND: |
| 357 | status = PORT_PLC; |
| 358 | port_change_bit = "suspend/resume"; |
| 359 | break; |
Sarah Sharp | 34fb562 | 2009-12-09 15:59:08 -0800 | [diff] [blame] | 360 | default: |
| 361 | /* Should never happen */ |
| 362 | return; |
| 363 | } |
| 364 | /* Change bits are all write 1 to clear */ |
| 365 | xhci_writel(xhci, port_status | status, addr); |
| 366 | port_status = xhci_readl(xhci, addr); |
| 367 | xhci_dbg(xhci, "clear port %s change, actual port %d status = 0x%x\n", |
| 368 | port_change_bit, wIndex, port_status); |
| 369 | } |
| 370 | |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 371 | int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, |
| 372 | u16 wIndex, char *buf, u16 wLength) |
| 373 | { |
| 374 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
| 375 | int ports; |
| 376 | unsigned long flags; |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 377 | u32 temp, temp1, status; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 378 | int retval = 0; |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 379 | u32 __iomem **port_array; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 380 | int slot_id; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 381 | struct xhci_bus_state *bus_state; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 382 | |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 383 | if (hcd->speed == HCD_USB3) { |
| 384 | ports = xhci->num_usb3_ports; |
| 385 | port_array = xhci->usb3_ports; |
| 386 | } else { |
| 387 | ports = xhci->num_usb2_ports; |
| 388 | port_array = xhci->usb2_ports; |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 389 | } |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 390 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 391 | |
| 392 | spin_lock_irqsave(&xhci->lock, flags); |
| 393 | switch (typeReq) { |
| 394 | case GetHubStatus: |
| 395 | /* No power source, over-current reported per port */ |
| 396 | memset(buf, 0, 4); |
| 397 | break; |
| 398 | case GetHubDescriptor: |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 399 | /* Check to make sure userspace is asking for the USB 3.0 hub |
| 400 | * descriptor for the USB 3.0 roothub. If not, we stall the |
| 401 | * endpoint, like external hubs do. |
| 402 | */ |
| 403 | if (hcd->speed == HCD_USB3 && |
| 404 | (wLength < USB_DT_SS_HUB_SIZE || |
| 405 | wValue != (USB_DT_SS_HUB << 8))) { |
| 406 | xhci_dbg(xhci, "Wrong hub descriptor type for " |
| 407 | "USB 3.0 roothub.\n"); |
| 408 | goto error; |
| 409 | } |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 410 | xhci_hub_descriptor(hcd, xhci, |
| 411 | (struct usb_hub_descriptor *) buf); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 412 | break; |
| 413 | case GetPortStatus: |
| 414 | if (!wIndex || wIndex > ports) |
| 415 | goto error; |
| 416 | wIndex--; |
| 417 | status = 0; |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 418 | temp = xhci_readl(xhci, port_array[wIndex]); |
Sarah Sharp | f9de815 | 2010-10-29 14:37:23 -0700 | [diff] [blame] | 419 | if (temp == 0xffffffff) { |
| 420 | retval = -ENODEV; |
| 421 | break; |
| 422 | } |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 423 | xhci_dbg(xhci, "get port status, actual port %d status = 0x%x\n", wIndex, temp); |
| 424 | |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 425 | /* FIXME - should we return a port status value like the USB |
| 426 | * 3.0 external hubs do? |
| 427 | */ |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 428 | /* wPortChange bits */ |
| 429 | if (temp & PORT_CSC) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 430 | status |= USB_PORT_STAT_C_CONNECTION << 16; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 431 | if (temp & PORT_PEC) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 432 | status |= USB_PORT_STAT_C_ENABLE << 16; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 433 | if ((temp & PORT_OCC)) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 434 | status |= USB_PORT_STAT_C_OVERCURRENT << 16; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 435 | /* |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 436 | * FIXME ignoring reset and USB 2.1/3.0 specific |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 437 | * changes |
| 438 | */ |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 439 | if ((temp & PORT_PLS_MASK) == XDEV_U3 |
| 440 | && (temp & PORT_POWER)) |
| 441 | status |= 1 << USB_PORT_FEAT_SUSPEND; |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 442 | if ((temp & PORT_PLS_MASK) == XDEV_RESUME) { |
| 443 | if ((temp & PORT_RESET) || !(temp & PORT_PE)) |
| 444 | goto error; |
| 445 | if (!DEV_SUPERSPEED(temp) && time_after_eq(jiffies, |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 446 | bus_state->resume_done[wIndex])) { |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 447 | xhci_dbg(xhci, "Resume USB2 port %d\n", |
| 448 | wIndex + 1); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 449 | bus_state->resume_done[wIndex] = 0; |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 450 | temp1 = xhci_port_state_to_neutral(temp); |
| 451 | temp1 &= ~PORT_PLS_MASK; |
| 452 | temp1 |= PORT_LINK_STROBE | XDEV_U0; |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 453 | xhci_writel(xhci, temp1, port_array[wIndex]); |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 454 | |
| 455 | xhci_dbg(xhci, "set port %d resume\n", |
| 456 | wIndex + 1); |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 457 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 458 | wIndex + 1); |
| 459 | if (!slot_id) { |
| 460 | xhci_dbg(xhci, "slot_id is zero\n"); |
| 461 | goto error; |
| 462 | } |
| 463 | xhci_ring_device(xhci, slot_id); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 464 | bus_state->port_c_suspend |= 1 << wIndex; |
| 465 | bus_state->suspended_ports &= ~(1 << wIndex); |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 466 | } |
| 467 | } |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 468 | if ((temp & PORT_PLS_MASK) == XDEV_U0 |
| 469 | && (temp & PORT_POWER) |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 470 | && (bus_state->suspended_ports & (1 << wIndex))) { |
| 471 | bus_state->suspended_ports &= ~(1 << wIndex); |
| 472 | bus_state->port_c_suspend |= 1 << wIndex; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 473 | } |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 474 | if (temp & PORT_CONNECT) { |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 475 | status |= USB_PORT_STAT_CONNECTION; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 476 | status |= xhci_port_speed(temp); |
| 477 | } |
| 478 | if (temp & PORT_PE) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 479 | status |= USB_PORT_STAT_ENABLE; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 480 | if (temp & PORT_OC) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 481 | status |= USB_PORT_STAT_OVERCURRENT; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 482 | if (temp & PORT_RESET) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 483 | status |= USB_PORT_STAT_RESET; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 484 | if (temp & PORT_POWER) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 485 | status |= USB_PORT_STAT_POWER; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 486 | if (bus_state->port_c_suspend & (1 << wIndex)) |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 487 | status |= 1 << USB_PORT_FEAT_C_SUSPEND; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 488 | xhci_dbg(xhci, "Get port status returned 0x%x\n", status); |
| 489 | put_unaligned(cpu_to_le32(status), (__le32 *) buf); |
| 490 | break; |
| 491 | case SetPortFeature: |
| 492 | wIndex &= 0xff; |
| 493 | if (!wIndex || wIndex > ports) |
| 494 | goto error; |
| 495 | wIndex--; |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 496 | temp = xhci_readl(xhci, port_array[wIndex]); |
Sarah Sharp | f9de815 | 2010-10-29 14:37:23 -0700 | [diff] [blame] | 497 | if (temp == 0xffffffff) { |
| 498 | retval = -ENODEV; |
| 499 | break; |
| 500 | } |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 501 | temp = xhci_port_state_to_neutral(temp); |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 502 | /* FIXME: What new port features do we need to support? */ |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 503 | switch (wValue) { |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 504 | case USB_PORT_FEAT_SUSPEND: |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 505 | temp = xhci_readl(xhci, port_array[wIndex]); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 506 | /* In spec software should not attempt to suspend |
| 507 | * a port unless the port reports that it is in the |
| 508 | * enabled (PED = ‘1’,PLS < ‘3’) state. |
| 509 | */ |
| 510 | if ((temp & PORT_PE) == 0 || (temp & PORT_RESET) |
| 511 | || (temp & PORT_PLS_MASK) >= XDEV_U3) { |
| 512 | xhci_warn(xhci, "USB core suspending device " |
| 513 | "not in U0/U1/U2.\n"); |
| 514 | goto error; |
| 515 | } |
| 516 | |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 517 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
| 518 | wIndex + 1); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 519 | if (!slot_id) { |
| 520 | xhci_warn(xhci, "slot_id is zero\n"); |
| 521 | goto error; |
| 522 | } |
| 523 | /* unlock to execute stop endpoint commands */ |
| 524 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 525 | xhci_stop_device(xhci, slot_id, 1); |
| 526 | spin_lock_irqsave(&xhci->lock, flags); |
| 527 | |
| 528 | temp = xhci_port_state_to_neutral(temp); |
| 529 | temp &= ~PORT_PLS_MASK; |
| 530 | temp |= PORT_LINK_STROBE | XDEV_U3; |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 531 | xhci_writel(xhci, temp, port_array[wIndex]); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 532 | |
| 533 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 534 | msleep(10); /* wait device to enter */ |
| 535 | spin_lock_irqsave(&xhci->lock, flags); |
| 536 | |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 537 | temp = xhci_readl(xhci, port_array[wIndex]); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 538 | bus_state->suspended_ports |= 1 << wIndex; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 539 | break; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 540 | case USB_PORT_FEAT_POWER: |
| 541 | /* |
| 542 | * Turn on ports, even if there isn't per-port switching. |
| 543 | * HC will report connect events even before this is set. |
| 544 | * However, khubd will ignore the roothub events until |
| 545 | * the roothub is registered. |
| 546 | */ |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 547 | xhci_writel(xhci, temp | PORT_POWER, |
| 548 | port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 549 | |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 550 | temp = xhci_readl(xhci, port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 551 | xhci_dbg(xhci, "set port power, actual port %d status = 0x%x\n", wIndex, temp); |
| 552 | break; |
| 553 | case USB_PORT_FEAT_RESET: |
| 554 | temp = (temp | PORT_RESET); |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 555 | xhci_writel(xhci, temp, port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 556 | |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 557 | temp = xhci_readl(xhci, port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 558 | xhci_dbg(xhci, "set port reset, actual port %d status = 0x%x\n", wIndex, temp); |
| 559 | break; |
| 560 | default: |
| 561 | goto error; |
| 562 | } |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 563 | /* unblock any posted writes */ |
| 564 | temp = xhci_readl(xhci, port_array[wIndex]); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 565 | break; |
| 566 | case ClearPortFeature: |
| 567 | if (!wIndex || wIndex > ports) |
| 568 | goto error; |
| 569 | wIndex--; |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 570 | temp = xhci_readl(xhci, port_array[wIndex]); |
Sarah Sharp | f9de815 | 2010-10-29 14:37:23 -0700 | [diff] [blame] | 571 | if (temp == 0xffffffff) { |
| 572 | retval = -ENODEV; |
| 573 | break; |
| 574 | } |
Sarah Sharp | 4bbb0ac | 2010-11-29 16:14:37 -0800 | [diff] [blame] | 575 | /* FIXME: What new port features do we need to support? */ |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 576 | temp = xhci_port_state_to_neutral(temp); |
| 577 | switch (wValue) { |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 578 | case USB_PORT_FEAT_SUSPEND: |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 579 | temp = xhci_readl(xhci, port_array[wIndex]); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 580 | xhci_dbg(xhci, "clear USB_PORT_FEAT_SUSPEND\n"); |
| 581 | xhci_dbg(xhci, "PORTSC %04x\n", temp); |
| 582 | if (temp & PORT_RESET) |
| 583 | goto error; |
| 584 | if (temp & XDEV_U3) { |
| 585 | if ((temp & PORT_PE) == 0) |
| 586 | goto error; |
| 587 | if (DEV_SUPERSPEED(temp)) { |
| 588 | temp = xhci_port_state_to_neutral(temp); |
| 589 | temp &= ~PORT_PLS_MASK; |
| 590 | temp |= PORT_LINK_STROBE | XDEV_U0; |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 591 | xhci_writel(xhci, temp, |
| 592 | port_array[wIndex]); |
| 593 | xhci_readl(xhci, port_array[wIndex]); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 594 | } else { |
| 595 | temp = xhci_port_state_to_neutral(temp); |
| 596 | temp &= ~PORT_PLS_MASK; |
| 597 | temp |= PORT_LINK_STROBE | XDEV_RESUME; |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 598 | xhci_writel(xhci, temp, |
| 599 | port_array[wIndex]); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 600 | |
| 601 | spin_unlock_irqrestore(&xhci->lock, |
| 602 | flags); |
| 603 | msleep(20); |
| 604 | spin_lock_irqsave(&xhci->lock, flags); |
| 605 | |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 606 | temp = xhci_readl(xhci, |
| 607 | port_array[wIndex]); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 608 | temp = xhci_port_state_to_neutral(temp); |
| 609 | temp &= ~PORT_PLS_MASK; |
| 610 | temp |= PORT_LINK_STROBE | XDEV_U0; |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 611 | xhci_writel(xhci, temp, |
| 612 | port_array[wIndex]); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 613 | } |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 614 | bus_state->port_c_suspend |= 1 << wIndex; |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 615 | } |
| 616 | |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 617 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
| 618 | wIndex + 1); |
Andiry Xu | be88fe4 | 2010-10-14 07:22:57 -0700 | [diff] [blame] | 619 | if (!slot_id) { |
| 620 | xhci_dbg(xhci, "slot_id is zero\n"); |
| 621 | goto error; |
| 622 | } |
| 623 | xhci_ring_device(xhci, slot_id); |
| 624 | break; |
| 625 | case USB_PORT_FEAT_C_SUSPEND: |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 626 | bus_state->port_c_suspend &= ~(1 << wIndex); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 627 | case USB_PORT_FEAT_C_RESET: |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 628 | case USB_PORT_FEAT_C_CONNECTION: |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 629 | case USB_PORT_FEAT_C_OVER_CURRENT: |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 630 | case USB_PORT_FEAT_C_ENABLE: |
Sarah Sharp | 34fb562 | 2009-12-09 15:59:08 -0800 | [diff] [blame] | 631 | xhci_clear_port_change_bit(xhci, wValue, wIndex, |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 632 | port_array[wIndex], temp); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 633 | break; |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 634 | case USB_PORT_FEAT_ENABLE: |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 635 | xhci_disable_port(hcd, xhci, wIndex, |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 636 | port_array[wIndex], temp); |
Sarah Sharp | 6219c04 | 2009-12-09 15:59:11 -0800 | [diff] [blame] | 637 | break; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 638 | default: |
| 639 | goto error; |
| 640 | } |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 641 | break; |
| 642 | default: |
| 643 | error: |
| 644 | /* "stall" on error */ |
| 645 | retval = -EPIPE; |
| 646 | } |
| 647 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 648 | return retval; |
| 649 | } |
| 650 | |
| 651 | /* |
| 652 | * Returns 0 if the status hasn't changed, or the number of bytes in buf. |
| 653 | * Ports are 0-indexed from the HCD point of view, |
| 654 | * and 1-indexed from the USB core pointer of view. |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 655 | * |
| 656 | * Note that the status change bits will be cleared as soon as a port status |
| 657 | * change event is generated, so we use the saved status from that event. |
| 658 | */ |
| 659 | int xhci_hub_status_data(struct usb_hcd *hcd, char *buf) |
| 660 | { |
| 661 | unsigned long flags; |
| 662 | u32 temp, status; |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 663 | u32 mask; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 664 | int i, retval; |
| 665 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
| 666 | int ports; |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 667 | u32 __iomem **port_array; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 668 | struct xhci_bus_state *bus_state; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 669 | |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 670 | if (hcd->speed == HCD_USB3) { |
| 671 | ports = xhci->num_usb3_ports; |
| 672 | port_array = xhci->usb3_ports; |
| 673 | } else { |
| 674 | ports = xhci->num_usb2_ports; |
| 675 | port_array = xhci->usb2_ports; |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 676 | } |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 677 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 678 | |
| 679 | /* Initial status is no changes */ |
William Gulland | 419a8e81 | 2010-05-12 10:20:34 -0700 | [diff] [blame] | 680 | retval = (ports + 8) / 8; |
| 681 | memset(buf, 0, retval); |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 682 | status = 0; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 683 | |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 684 | mask = PORT_CSC | PORT_PEC | PORT_OCC; |
| 685 | |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 686 | spin_lock_irqsave(&xhci->lock, flags); |
| 687 | /* For each port, did anything change? If so, set that bit in buf. */ |
| 688 | for (i = 0; i < ports; i++) { |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 689 | temp = xhci_readl(xhci, port_array[i]); |
Sarah Sharp | f9de815 | 2010-10-29 14:37:23 -0700 | [diff] [blame] | 690 | if (temp == 0xffffffff) { |
| 691 | retval = -ENODEV; |
| 692 | break; |
| 693 | } |
Andiry Xu | 5619253 | 2010-10-14 07:23:00 -0700 | [diff] [blame] | 694 | if ((temp & mask) != 0 || |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 695 | (bus_state->port_c_suspend & 1 << i) || |
| 696 | (bus_state->resume_done[i] && time_after_eq( |
| 697 | jiffies, bus_state->resume_done[i]))) { |
William Gulland | 419a8e81 | 2010-05-12 10:20:34 -0700 | [diff] [blame] | 698 | buf[(i + 1) / 8] |= 1 << (i + 1) % 8; |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 699 | status = 1; |
| 700 | } |
| 701 | } |
| 702 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 703 | return status ? retval : 0; |
| 704 | } |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 705 | |
| 706 | #ifdef CONFIG_PM |
| 707 | |
| 708 | int xhci_bus_suspend(struct usb_hcd *hcd) |
| 709 | { |
| 710 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 711 | int max_ports, port_index; |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 712 | u32 __iomem **port_array; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 713 | struct xhci_bus_state *bus_state; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 714 | unsigned long flags; |
| 715 | |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 716 | if (hcd->speed == HCD_USB3) { |
| 717 | max_ports = xhci->num_usb3_ports; |
| 718 | port_array = xhci->usb3_ports; |
| 719 | xhci_dbg(xhci, "suspend USB 3.0 root hub\n"); |
| 720 | } else { |
| 721 | max_ports = xhci->num_usb2_ports; |
| 722 | port_array = xhci->usb2_ports; |
| 723 | xhci_dbg(xhci, "suspend USB 2.0 root hub\n"); |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 724 | } |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 725 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 726 | |
| 727 | spin_lock_irqsave(&xhci->lock, flags); |
| 728 | |
| 729 | if (hcd->self.root_hub->do_remote_wakeup) { |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 730 | port_index = max_ports; |
| 731 | while (port_index--) { |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 732 | if (bus_state->resume_done[port_index] != 0) { |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 733 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 734 | xhci_dbg(xhci, "suspend failed because " |
| 735 | "port %d is resuming\n", |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 736 | port_index + 1); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 737 | return -EBUSY; |
| 738 | } |
| 739 | } |
| 740 | } |
| 741 | |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 742 | port_index = max_ports; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 743 | bus_state->bus_suspended = 0; |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 744 | while (port_index--) { |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 745 | /* suspend the port if the port is not suspended */ |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 746 | u32 t1, t2; |
| 747 | int slot_id; |
| 748 | |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 749 | t1 = xhci_readl(xhci, port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 750 | t2 = xhci_port_state_to_neutral(t1); |
| 751 | |
| 752 | if ((t1 & PORT_PE) && !(t1 & PORT_PLS_MASK)) { |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 753 | xhci_dbg(xhci, "port %d not suspended\n", port_index); |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 754 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 755 | port_index + 1); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 756 | if (slot_id) { |
| 757 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 758 | xhci_stop_device(xhci, slot_id, 1); |
| 759 | spin_lock_irqsave(&xhci->lock, flags); |
| 760 | } |
| 761 | t2 &= ~PORT_PLS_MASK; |
| 762 | t2 |= PORT_LINK_STROBE | XDEV_U3; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 763 | set_bit(port_index, &bus_state->bus_suspended); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 764 | } |
| 765 | if (hcd->self.root_hub->do_remote_wakeup) { |
| 766 | if (t1 & PORT_CONNECT) { |
| 767 | t2 |= PORT_WKOC_E | PORT_WKDISC_E; |
| 768 | t2 &= ~PORT_WKCONN_E; |
| 769 | } else { |
| 770 | t2 |= PORT_WKOC_E | PORT_WKCONN_E; |
| 771 | t2 &= ~PORT_WKDISC_E; |
| 772 | } |
| 773 | } else |
| 774 | t2 &= ~PORT_WAKE_BITS; |
| 775 | |
| 776 | t1 = xhci_port_state_to_neutral(t1); |
| 777 | if (t1 != t2) |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 778 | xhci_writel(xhci, t2, port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 779 | |
Andiry Xu | 4f0871a | 2011-04-19 17:17:39 +0800 | [diff] [blame^] | 780 | if (hcd->speed != HCD_USB3) { |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 781 | /* enable remote wake up for USB 2.0 */ |
| 782 | u32 __iomem *addr; |
| 783 | u32 tmp; |
| 784 | |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 785 | /* Add one to the port status register address to get |
| 786 | * the port power control register address. |
| 787 | */ |
| 788 | addr = port_array[port_index] + 1; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 789 | tmp = xhci_readl(xhci, addr); |
| 790 | tmp |= PORT_RWE; |
| 791 | xhci_writel(xhci, tmp, addr); |
| 792 | } |
| 793 | } |
| 794 | hcd->state = HC_STATE_SUSPENDED; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 795 | bus_state->next_statechange = jiffies + msecs_to_jiffies(10); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 796 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 797 | return 0; |
| 798 | } |
| 799 | |
| 800 | int xhci_bus_resume(struct usb_hcd *hcd) |
| 801 | { |
| 802 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 803 | int max_ports, port_index; |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 804 | u32 __iomem **port_array; |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 805 | struct xhci_bus_state *bus_state; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 806 | u32 temp; |
| 807 | unsigned long flags; |
| 808 | |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 809 | if (hcd->speed == HCD_USB3) { |
| 810 | max_ports = xhci->num_usb3_ports; |
| 811 | port_array = xhci->usb3_ports; |
| 812 | xhci_dbg(xhci, "resume USB 3.0 root hub\n"); |
| 813 | } else { |
| 814 | max_ports = xhci->num_usb2_ports; |
| 815 | port_array = xhci->usb2_ports; |
| 816 | xhci_dbg(xhci, "resume USB 2.0 root hub\n"); |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 817 | } |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 818 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 819 | |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 820 | if (time_before(jiffies, bus_state->next_statechange)) |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 821 | msleep(5); |
| 822 | |
| 823 | spin_lock_irqsave(&xhci->lock, flags); |
| 824 | if (!HCD_HW_ACCESSIBLE(hcd)) { |
| 825 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 826 | return -ESHUTDOWN; |
| 827 | } |
| 828 | |
| 829 | /* delay the irqs */ |
| 830 | temp = xhci_readl(xhci, &xhci->op_regs->command); |
| 831 | temp &= ~CMD_EIE; |
| 832 | xhci_writel(xhci, temp, &xhci->op_regs->command); |
| 833 | |
Sarah Sharp | 518e848 | 2010-12-15 11:56:29 -0800 | [diff] [blame] | 834 | port_index = max_ports; |
| 835 | while (port_index--) { |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 836 | /* Check whether need resume ports. If needed |
| 837 | resume port and disable remote wakeup */ |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 838 | u32 temp; |
| 839 | int slot_id; |
| 840 | |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 841 | temp = xhci_readl(xhci, port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 842 | if (DEV_SUPERSPEED(temp)) |
| 843 | temp &= ~(PORT_RWC_BITS | PORT_CEC | PORT_WAKE_BITS); |
| 844 | else |
| 845 | temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS); |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 846 | if (test_bit(port_index, &bus_state->bus_suspended) && |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 847 | (temp & PORT_PLS_MASK)) { |
| 848 | if (DEV_SUPERSPEED(temp)) { |
| 849 | temp = xhci_port_state_to_neutral(temp); |
| 850 | temp &= ~PORT_PLS_MASK; |
| 851 | temp |= PORT_LINK_STROBE | XDEV_U0; |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 852 | xhci_writel(xhci, temp, port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 853 | } else { |
| 854 | temp = xhci_port_state_to_neutral(temp); |
| 855 | temp &= ~PORT_PLS_MASK; |
| 856 | temp |= PORT_LINK_STROBE | XDEV_RESUME; |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 857 | xhci_writel(xhci, temp, port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 858 | |
| 859 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 860 | msleep(20); |
| 861 | spin_lock_irqsave(&xhci->lock, flags); |
| 862 | |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 863 | temp = xhci_readl(xhci, port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 864 | temp = xhci_port_state_to_neutral(temp); |
| 865 | temp &= ~PORT_PLS_MASK; |
| 866 | temp |= PORT_LINK_STROBE | XDEV_U0; |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 867 | xhci_writel(xhci, temp, port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 868 | } |
Andiry Xu | 4f0871a | 2011-04-19 17:17:39 +0800 | [diff] [blame^] | 869 | /* wait for the port to enter U0 and report port link |
| 870 | * state change. |
| 871 | */ |
| 872 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 873 | msleep(20); |
| 874 | spin_lock_irqsave(&xhci->lock, flags); |
| 875 | |
| 876 | /* Clear PLC */ |
| 877 | temp = xhci_readl(xhci, port_array[port_index]); |
| 878 | if (temp & PORT_PLC) { |
| 879 | temp = xhci_port_state_to_neutral(temp); |
| 880 | temp |= PORT_PLC; |
| 881 | xhci_writel(xhci, temp, port_array[port_index]); |
| 882 | } |
| 883 | |
Sarah Sharp | 5233630 | 2010-12-16 10:49:09 -0800 | [diff] [blame] | 884 | slot_id = xhci_find_slot_id_by_port(hcd, |
| 885 | xhci, port_index + 1); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 886 | if (slot_id) |
| 887 | xhci_ring_device(xhci, slot_id); |
| 888 | } else |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 889 | xhci_writel(xhci, temp, port_array[port_index]); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 890 | |
Andiry Xu | 4f0871a | 2011-04-19 17:17:39 +0800 | [diff] [blame^] | 891 | if (hcd->speed != HCD_USB3) { |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 892 | /* disable remote wake up for USB 2.0 */ |
| 893 | u32 __iomem *addr; |
| 894 | u32 tmp; |
| 895 | |
Sarah Sharp | 5308a91 | 2010-12-01 11:34:59 -0800 | [diff] [blame] | 896 | /* Add one to the port status register address to get |
| 897 | * the port power control register address. |
| 898 | */ |
| 899 | addr = port_array[port_index] + 1; |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 900 | tmp = xhci_readl(xhci, addr); |
| 901 | tmp &= ~PORT_RWE; |
| 902 | xhci_writel(xhci, tmp, addr); |
| 903 | } |
| 904 | } |
| 905 | |
| 906 | (void) xhci_readl(xhci, &xhci->op_regs->command); |
| 907 | |
Sarah Sharp | 20b67cf | 2010-12-15 12:47:14 -0800 | [diff] [blame] | 908 | bus_state->next_statechange = jiffies + msecs_to_jiffies(5); |
Andiry Xu | 9777e3c | 2010-10-14 07:23:03 -0700 | [diff] [blame] | 909 | /* re-enable irqs */ |
| 910 | temp = xhci_readl(xhci, &xhci->op_regs->command); |
| 911 | temp |= CMD_EIE; |
| 912 | xhci_writel(xhci, temp, &xhci->op_regs->command); |
| 913 | temp = xhci_readl(xhci, &xhci->op_regs->command); |
| 914 | |
| 915 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 916 | return 0; |
| 917 | } |
| 918 | |
Sarah Sharp | 436a389 | 2010-10-15 14:59:15 -0700 | [diff] [blame] | 919 | #endif /* CONFIG_PM */ |