Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
David Brownell | d49d431 | 2005-05-07 13:21:50 -0700 | [diff] [blame] | 2 | * Copyright (C) 2001-2004 by David Brownell |
David Brownell | 53bd6a6 | 2006-08-30 14:50:06 -0700 | [diff] [blame] | 3 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of the GNU General Public License as published by the |
| 6 | * Free Software Foundation; either version 2 of the License, or (at your |
| 7 | * option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, but |
| 10 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 11 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software Foundation, |
| 16 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 17 | */ |
| 18 | |
| 19 | /* this file is part of ehci-hcd.c */ |
| 20 | |
| 21 | /*-------------------------------------------------------------------------*/ |
| 22 | |
| 23 | /* |
| 24 | * EHCI Root Hub ... the nonsharable stuff |
| 25 | * |
| 26 | * Registers don't need cpu_to_le32, that happens transparently |
| 27 | */ |
| 28 | |
| 29 | /*-------------------------------------------------------------------------*/ |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 30 | #include <linux/usb/otg.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | |
Alan Stern | 58a97ff | 2008-04-14 12:17:10 -0400 | [diff] [blame] | 32 | #define PORT_WAKE_BITS (PORT_WKOC_E|PORT_WKDISC_E|PORT_WKCONN_E) |
| 33 | |
Alan Stern | aff6d18 | 2008-04-18 11:11:26 -0400 | [diff] [blame] | 34 | #ifdef CONFIG_PM |
| 35 | |
Julius Werner | 9b79091 | 2013-05-17 12:08:51 -0700 | [diff] [blame] | 36 | static int persist_enabled_on_companion(struct usb_device *udev, void *unused) |
| 37 | { |
| 38 | return !udev->maxchild && udev->persist_enabled && |
| 39 | udev->bus->root_hub->speed < USB_SPEED_HIGH; |
| 40 | } |
| 41 | |
Alan Stern | 383975d | 2007-05-04 11:52:40 -0400 | [diff] [blame] | 42 | /* After a power loss, ports that were owned by the companion must be |
| 43 | * reset so that the companion can still own them. |
| 44 | */ |
| 45 | static void ehci_handover_companion_ports(struct ehci_hcd *ehci) |
| 46 | { |
| 47 | u32 __iomem *reg; |
| 48 | u32 status; |
| 49 | int port; |
| 50 | __le32 buf; |
| 51 | struct usb_hcd *hcd = ehci_to_hcd(ehci); |
| 52 | |
| 53 | if (!ehci->owned_ports) |
| 54 | return; |
| 55 | |
Julius Werner | 9b79091 | 2013-05-17 12:08:51 -0700 | [diff] [blame] | 56 | /* |
| 57 | * USB 1.1 devices are mostly HIDs, which don't need to persist across |
| 58 | * suspends. If we ensure that none of our companion's devices have |
| 59 | * persist_enabled (by looking through all USB 1.1 buses in the system), |
| 60 | * we can skip this and avoid slowing resume down. Devices without |
| 61 | * persist will just get reenumerated shortly after resume anyway. |
| 62 | */ |
| 63 | if (!usb_for_each_dev(NULL, persist_enabled_on_companion)) |
| 64 | return; |
| 65 | |
Alan Stern | c73cee7 | 2012-10-31 13:21:06 -0400 | [diff] [blame] | 66 | /* Make sure the ports are powered */ |
| 67 | port = HCS_N_PORTS(ehci->hcs_params); |
| 68 | while (port--) { |
| 69 | if (test_bit(port, &ehci->owned_ports)) { |
| 70 | reg = &ehci->regs->port_status[port]; |
| 71 | status = ehci_readl(ehci, reg) & ~PORT_RWC_BITS; |
| 72 | if (!(status & PORT_POWER)) { |
| 73 | status |= PORT_POWER; |
| 74 | ehci_writel(ehci, status, reg); |
| 75 | } |
| 76 | } |
| 77 | } |
| 78 | |
Alan Stern | 383975d | 2007-05-04 11:52:40 -0400 | [diff] [blame] | 79 | /* Give the connections some time to appear */ |
| 80 | msleep(20); |
| 81 | |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 82 | spin_lock_irq(&ehci->lock); |
Alan Stern | 383975d | 2007-05-04 11:52:40 -0400 | [diff] [blame] | 83 | port = HCS_N_PORTS(ehci->hcs_params); |
| 84 | while (port--) { |
| 85 | if (test_bit(port, &ehci->owned_ports)) { |
| 86 | reg = &ehci->regs->port_status[port]; |
Alan Stern | 3c519b8 | 2007-05-04 11:55:31 -0400 | [diff] [blame] | 87 | status = ehci_readl(ehci, reg) & ~PORT_RWC_BITS; |
Alan Stern | 383975d | 2007-05-04 11:52:40 -0400 | [diff] [blame] | 88 | |
| 89 | /* Port already owned by companion? */ |
| 90 | if (status & PORT_OWNER) |
| 91 | clear_bit(port, &ehci->owned_ports); |
Alan Stern | 3c519b8 | 2007-05-04 11:55:31 -0400 | [diff] [blame] | 92 | else if (test_bit(port, &ehci->companion_ports)) |
| 93 | ehci_writel(ehci, status & ~PORT_PE, reg); |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 94 | else { |
| 95 | spin_unlock_irq(&ehci->lock); |
Alan Stern | 383975d | 2007-05-04 11:52:40 -0400 | [diff] [blame] | 96 | ehci_hub_control(hcd, SetPortFeature, |
| 97 | USB_PORT_FEAT_RESET, port + 1, |
| 98 | NULL, 0); |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 99 | spin_lock_irq(&ehci->lock); |
| 100 | } |
Alan Stern | 383975d | 2007-05-04 11:52:40 -0400 | [diff] [blame] | 101 | } |
| 102 | } |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 103 | spin_unlock_irq(&ehci->lock); |
Alan Stern | 383975d | 2007-05-04 11:52:40 -0400 | [diff] [blame] | 104 | |
| 105 | if (!ehci->owned_ports) |
| 106 | return; |
| 107 | msleep(90); /* Wait for resets to complete */ |
| 108 | |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 109 | spin_lock_irq(&ehci->lock); |
Alan Stern | 383975d | 2007-05-04 11:52:40 -0400 | [diff] [blame] | 110 | port = HCS_N_PORTS(ehci->hcs_params); |
| 111 | while (port--) { |
| 112 | if (test_bit(port, &ehci->owned_ports)) { |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 113 | spin_unlock_irq(&ehci->lock); |
Alan Stern | 383975d | 2007-05-04 11:52:40 -0400 | [diff] [blame] | 114 | ehci_hub_control(hcd, GetPortStatus, |
| 115 | 0, port + 1, |
| 116 | (char *) &buf, sizeof(buf)); |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 117 | spin_lock_irq(&ehci->lock); |
Alan Stern | 383975d | 2007-05-04 11:52:40 -0400 | [diff] [blame] | 118 | |
| 119 | /* The companion should now own the port, |
| 120 | * but if something went wrong the port must not |
| 121 | * remain enabled. |
| 122 | */ |
| 123 | reg = &ehci->regs->port_status[port]; |
| 124 | status = ehci_readl(ehci, reg) & ~PORT_RWC_BITS; |
| 125 | if (status & PORT_OWNER) |
| 126 | ehci_writel(ehci, status | PORT_CSC, reg); |
| 127 | else { |
| 128 | ehci_dbg(ehci, "failed handover port %d: %x\n", |
| 129 | port + 1, status); |
| 130 | ehci_writel(ehci, status & ~PORT_PE, reg); |
| 131 | } |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | ehci->owned_ports = 0; |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 136 | spin_unlock_irq(&ehci->lock); |
Alan Stern | 383975d | 2007-05-04 11:52:40 -0400 | [diff] [blame] | 137 | } |
| 138 | |
Alan Stern | c5cf921 | 2012-06-28 11:19:02 -0400 | [diff] [blame] | 139 | static int ehci_port_change(struct ehci_hcd *ehci) |
Matthew Garrett | 294d95f | 2011-01-11 12:26:48 -0500 | [diff] [blame] | 140 | { |
| 141 | int i = HCS_N_PORTS(ehci->hcs_params); |
| 142 | |
| 143 | /* First check if the controller indicates a change event */ |
| 144 | |
| 145 | if (ehci_readl(ehci, &ehci->regs->status) & STS_PCD) |
| 146 | return 1; |
| 147 | |
| 148 | /* |
| 149 | * Not all controllers appear to update this while going from D3 to D0, |
| 150 | * so check the individual port status registers as well |
| 151 | */ |
| 152 | |
| 153 | while (i--) |
| 154 | if (ehci_readl(ehci, &ehci->regs->port_status[i]) & PORT_CSC) |
| 155 | return 1; |
| 156 | |
| 157 | return 0; |
| 158 | } |
| 159 | |
Alan Stern | c5cf921 | 2012-06-28 11:19:02 -0400 | [diff] [blame] | 160 | static void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci, |
Alan Stern | 4147200 | 2010-06-25 14:02:14 -0400 | [diff] [blame] | 161 | bool suspending, bool do_wakeup) |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 162 | { |
| 163 | int port; |
| 164 | u32 temp; |
| 165 | |
| 166 | /* If remote wakeup is enabled for the root hub but disabled |
| 167 | * for the controller, we must adjust all the port wakeup flags |
| 168 | * when the controller is suspended or resumed. In all other |
| 169 | * cases they don't need to be changed. |
| 170 | */ |
Alan Stern | 4147200 | 2010-06-25 14:02:14 -0400 | [diff] [blame] | 171 | if (!ehci_to_hcd(ehci)->self.root_hub->do_remote_wakeup || do_wakeup) |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 172 | return; |
| 173 | |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 174 | spin_lock_irq(&ehci->lock); |
Yin Kangkai | 148fc55 | 2011-01-28 12:04:35 +0800 | [diff] [blame] | 175 | |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 176 | /* clear phy low-power mode before changing wakeup flags */ |
Tuomas Tynkkynen | 2cdcec4 | 2013-08-12 16:06:49 +0300 | [diff] [blame] | 177 | if (ehci->has_tdi_phy_lpm) { |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 178 | port = HCS_N_PORTS(ehci->hcs_params); |
| 179 | while (port--) { |
Alan Stern | a46af4e | 2012-06-25 12:19:03 -0400 | [diff] [blame] | 180 | u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port]; |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 181 | |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 182 | temp = ehci_readl(ehci, hostpc_reg); |
| 183 | ehci_writel(ehci, temp & ~HOSTPC_PHCD, hostpc_reg); |
| 184 | } |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 185 | spin_unlock_irq(&ehci->lock); |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 186 | msleep(5); |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 187 | spin_lock_irq(&ehci->lock); |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 188 | } |
| 189 | |
| 190 | port = HCS_N_PORTS(ehci->hcs_params); |
| 191 | while (port--) { |
| 192 | u32 __iomem *reg = &ehci->regs->port_status[port]; |
| 193 | u32 t1 = ehci_readl(ehci, reg) & ~PORT_RWC_BITS; |
| 194 | u32 t2 = t1 & ~PORT_WAKE_BITS; |
| 195 | |
| 196 | /* If we are suspending the controller, clear the flags. |
| 197 | * If we are resuming the controller, set the wakeup flags. |
| 198 | */ |
| 199 | if (!suspending) { |
| 200 | if (t1 & PORT_CONNECT) |
| 201 | t2 |= PORT_WKOC_E | PORT_WKDISC_E; |
| 202 | else |
| 203 | t2 |= PORT_WKOC_E | PORT_WKCONN_E; |
| 204 | } |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 205 | ehci_writel(ehci, t2, reg); |
| 206 | } |
| 207 | |
| 208 | /* enter phy low-power mode again */ |
Tuomas Tynkkynen | 2cdcec4 | 2013-08-12 16:06:49 +0300 | [diff] [blame] | 209 | if (ehci->has_tdi_phy_lpm) { |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 210 | port = HCS_N_PORTS(ehci->hcs_params); |
| 211 | while (port--) { |
Alan Stern | a46af4e | 2012-06-25 12:19:03 -0400 | [diff] [blame] | 212 | u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port]; |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 213 | |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 214 | temp = ehci_readl(ehci, hostpc_reg); |
| 215 | ehci_writel(ehci, temp | HOSTPC_PHCD, hostpc_reg); |
| 216 | } |
| 217 | } |
Alan Stern | ee0b9be | 2010-06-25 14:02:24 -0400 | [diff] [blame] | 218 | |
| 219 | /* Does the root hub have a port wakeup pending? */ |
Matthew Garrett | 294d95f | 2011-01-11 12:26:48 -0500 | [diff] [blame] | 220 | if (!suspending && ehci_port_change(ehci)) |
Alan Stern | ee0b9be | 2010-06-25 14:02:24 -0400 | [diff] [blame] | 221 | usb_hcd_resume_root_hub(ehci_to_hcd(ehci)); |
Yin Kangkai | 148fc55 | 2011-01-28 12:04:35 +0800 | [diff] [blame] | 222 | |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 223 | spin_unlock_irq(&ehci->lock); |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 224 | } |
| 225 | |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 226 | static int ehci_bus_suspend (struct usb_hcd *hcd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | { |
| 228 | struct ehci_hcd *ehci = hcd_to_ehci (hcd); |
| 229 | int port; |
Alan Stern | 8c03356 | 2006-11-09 14:42:16 -0500 | [diff] [blame] | 230 | int mask; |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 231 | int changed; |
Alan Stern | 3e8d6d8 | 2014-02-13 15:49:17 -0500 | [diff] [blame] | 232 | bool fs_idle_delay; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | |
Alan Stern | 8c774fe | 2007-02-01 16:09:59 -0500 | [diff] [blame] | 234 | ehci_dbg(ehci, "suspend root hub\n"); |
| 235 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | if (time_before (jiffies, ehci->next_statechange)) |
| 237 | msleep(5); |
| 238 | |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 239 | /* stop the schedules */ |
| 240 | ehci_quiesce(ehci); |
| 241 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | spin_lock_irq (&ehci->lock); |
Alan Stern | 43fe3a9 | 2012-07-11 11:23:16 -0400 | [diff] [blame] | 243 | if (ehci->rh_state < EHCI_RH_RUNNING) |
| 244 | goto done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | |
Alan Stern | cec3a53 | 2010-01-08 11:18:20 -0500 | [diff] [blame] | 246 | /* Once the controller is stopped, port resumes that are already |
| 247 | * in progress won't complete. Hence if remote wakeup is enabled |
| 248 | * for the root hub and any ports are in the middle of a resume or |
| 249 | * remote wakeup, we must fail the suspend. |
| 250 | */ |
| 251 | if (hcd->self.root_hub->do_remote_wakeup) { |
Alan Stern | a448e4d | 2012-04-03 15:24:30 -0400 | [diff] [blame] | 252 | if (ehci->resuming_ports) { |
| 253 | spin_unlock_irq(&ehci->lock); |
| 254 | ehci_dbg(ehci, "suspend failed because a port is resuming\n"); |
| 255 | return -EBUSY; |
Alan Stern | cec3a53 | 2010-01-08 11:18:20 -0500 | [diff] [blame] | 256 | } |
| 257 | } |
| 258 | |
Alan Stern | 8c03356 | 2006-11-09 14:42:16 -0500 | [diff] [blame] | 259 | /* Unlike other USB host controller types, EHCI doesn't have |
| 260 | * any notion of "global" or bus-wide suspend. The driver has |
| 261 | * to manually suspend all the active unsuspended ports, and |
| 262 | * then manually resume them in the bus_resume() routine. |
| 263 | */ |
| 264 | ehci->bus_suspended = 0; |
Alan Stern | 383975d | 2007-05-04 11:52:40 -0400 | [diff] [blame] | 265 | ehci->owned_ports = 0; |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 266 | changed = 0; |
Alan Stern | 3e8d6d8 | 2014-02-13 15:49:17 -0500 | [diff] [blame] | 267 | fs_idle_delay = false; |
Alan Stern | cec3a53 | 2010-01-08 11:18:20 -0500 | [diff] [blame] | 268 | port = HCS_N_PORTS(ehci->hcs_params); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | while (port--) { |
| 270 | u32 __iomem *reg = &ehci->regs->port_status [port]; |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 271 | u32 t1 = ehci_readl(ehci, reg) & ~PORT_RWC_BITS; |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 272 | u32 t2 = t1 & ~PORT_WAKE_BITS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | |
Alan Stern | 8c03356 | 2006-11-09 14:42:16 -0500 | [diff] [blame] | 274 | /* keep track of which ports we suspend */ |
Alan Stern | 383975d | 2007-05-04 11:52:40 -0400 | [diff] [blame] | 275 | if (t1 & PORT_OWNER) |
| 276 | set_bit(port, &ehci->owned_ports); |
| 277 | else if ((t1 & PORT_PE) && !(t1 & PORT_SUSPEND)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | t2 |= PORT_SUSPEND; |
Alan Stern | 8c03356 | 2006-11-09 14:42:16 -0500 | [diff] [blame] | 279 | set_bit(port, &ehci->bus_suspended); |
| 280 | } |
| 281 | |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 282 | /* enable remote wakeup on all ports, if told to do so */ |
Alek Du | 331ac6b | 2009-07-13 12:41:20 +0800 | [diff] [blame] | 283 | if (hcd->self.root_hub->do_remote_wakeup) { |
| 284 | /* only enable appropriate wake bits, otherwise the |
| 285 | * hardware can not go phy low power mode. If a race |
| 286 | * condition happens here(connection change during bits |
| 287 | * set), the port change detection will finally fix it. |
| 288 | */ |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 289 | if (t1 & PORT_CONNECT) |
Alek Du | 331ac6b | 2009-07-13 12:41:20 +0800 | [diff] [blame] | 290 | t2 |= PORT_WKOC_E | PORT_WKDISC_E; |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 291 | else |
Alek Du | 331ac6b | 2009-07-13 12:41:20 +0800 | [diff] [blame] | 292 | t2 |= PORT_WKOC_E | PORT_WKCONN_E; |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 293 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | |
| 295 | if (t1 != t2) { |
Alan Stern | 3e8d6d8 | 2014-02-13 15:49:17 -0500 | [diff] [blame] | 296 | /* |
| 297 | * On some controllers, Wake-On-Disconnect will |
| 298 | * generate false wakeup signals until the bus |
| 299 | * switches over to full-speed idle. For their |
| 300 | * sake, add a delay if we need one. |
| 301 | */ |
| 302 | if ((t2 & PORT_WKDISC_E) && |
| 303 | ehci_port_speed(ehci, t2) == |
| 304 | USB_PORT_STAT_HIGH_SPEED) |
| 305 | fs_idle_delay = true; |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 306 | ehci_writel(ehci, t2, reg); |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 307 | changed = 1; |
| 308 | } |
| 309 | } |
Alan Stern | 3e8d6d8 | 2014-02-13 15:49:17 -0500 | [diff] [blame] | 310 | spin_unlock_irq(&ehci->lock); |
| 311 | |
| 312 | if ((changed && ehci->has_tdi_phy_lpm) || fs_idle_delay) { |
| 313 | /* |
| 314 | * Wait for HCD to enter low-power mode or for the bus |
| 315 | * to switch to full-speed idle. |
| 316 | */ |
| 317 | usleep_range(5000, 5500); |
| 318 | } |
Alek Du | 331ac6b | 2009-07-13 12:41:20 +0800 | [diff] [blame] | 319 | |
Tuomas Tynkkynen | 2cdcec4 | 2013-08-12 16:06:49 +0300 | [diff] [blame] | 320 | if (changed && ehci->has_tdi_phy_lpm) { |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 321 | spin_lock_irq(&ehci->lock); |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 322 | port = HCS_N_PORTS(ehci->hcs_params); |
| 323 | while (port--) { |
Alan Stern | a46af4e | 2012-06-25 12:19:03 -0400 | [diff] [blame] | 324 | u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port]; |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 325 | u32 t3; |
| 326 | |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 327 | t3 = ehci_readl(ehci, hostpc_reg); |
| 328 | ehci_writel(ehci, t3 | HOSTPC_PHCD, hostpc_reg); |
| 329 | t3 = ehci_readl(ehci, hostpc_reg); |
| 330 | ehci_dbg(ehci, "Port %d phy low-power mode %s\n", |
Alek Du | 331ac6b | 2009-07-13 12:41:20 +0800 | [diff] [blame] | 331 | port, (t3 & HOSTPC_PHCD) ? |
| 332 | "succeeded" : "failed"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | } |
Alan Stern | 3e8d6d8 | 2014-02-13 15:49:17 -0500 | [diff] [blame] | 334 | spin_unlock_irq(&ehci->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | } |
| 336 | |
Alan Stern | cd930c9 | 2008-01-10 11:14:53 -0500 | [diff] [blame] | 337 | /* Apparently some devices need a >= 1-uframe delay here */ |
| 338 | if (ehci->bus_suspended) |
| 339 | udelay(150); |
| 340 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | /* turn off now-idle HC */ |
| 342 | ehci_halt (ehci); |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 343 | |
| 344 | spin_lock_irq(&ehci->lock); |
Alan Stern | 43fe3a9 | 2012-07-11 11:23:16 -0400 | [diff] [blame] | 345 | if (ehci->enabled_hrtimer_events & BIT(EHCI_HRTIMER_POLL_DEAD)) |
| 346 | ehci_handle_controller_death(ehci); |
| 347 | if (ehci->rh_state != EHCI_RH_RUNNING) |
| 348 | goto done; |
Alan Stern | e879990 | 2011-08-18 16:31:30 -0400 | [diff] [blame] | 349 | ehci->rh_state = EHCI_RH_SUSPENDED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | |
Alan Stern | 3c273a0 | 2012-07-11 11:22:49 -0400 | [diff] [blame] | 351 | end_unlink_async(ehci); |
Alan Stern | 2a40f32 | 2013-03-15 14:40:26 -0400 | [diff] [blame] | 352 | unlink_empty_async_suspended(ehci); |
Ming Lei | 9118f9e | 2013-07-03 22:53:10 +0800 | [diff] [blame] | 353 | ehci_handle_start_intr_unlinks(ehci); |
Alan Stern | df20225 | 2012-07-11 11:22:26 -0400 | [diff] [blame] | 354 | ehci_handle_intr_unlinks(ehci); |
Alan Stern | 55934eb | 2012-07-11 11:22:35 -0400 | [diff] [blame] | 355 | end_free_itds(ehci); |
David Brownell | cdc647a | 2008-04-02 13:40:20 -0700 | [diff] [blame] | 356 | |
Alan Stern | 8c03356 | 2006-11-09 14:42:16 -0500 | [diff] [blame] | 357 | /* allow remote wakeup */ |
| 358 | mask = INTR_MASK; |
Alan Stern | 58a97ff | 2008-04-14 12:17:10 -0400 | [diff] [blame] | 359 | if (!hcd->self.root_hub->do_remote_wakeup) |
Alan Stern | 8c03356 | 2006-11-09 14:42:16 -0500 | [diff] [blame] | 360 | mask &= ~STS_PCD; |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 361 | ehci_writel(ehci, mask, &ehci->regs->intr_enable); |
| 362 | ehci_readl(ehci, &ehci->regs->intr_enable); |
Alan Stern | 8c03356 | 2006-11-09 14:42:16 -0500 | [diff] [blame] | 363 | |
Alan Stern | 43fe3a9 | 2012-07-11 11:23:16 -0400 | [diff] [blame] | 364 | done: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | ehci->next_statechange = jiffies + msecs_to_jiffies(10); |
Alan Stern | d58b4bc | 2012-07-11 11:21:54 -0400 | [diff] [blame] | 366 | ehci->enabled_hrtimer_events = 0; |
| 367 | ehci->next_hrtimer_event = EHCI_HRTIMER_NO_EVENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | spin_unlock_irq (&ehci->lock); |
Jon Hunter | 015798b | 2009-08-12 11:57:59 -0400 | [diff] [blame] | 369 | |
Alan Stern | d58b4bc | 2012-07-11 11:21:54 -0400 | [diff] [blame] | 370 | hrtimer_cancel(&ehci->hrtimer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | return 0; |
| 372 | } |
| 373 | |
| 374 | |
| 375 | /* caller has locked the root hub, and should reset/reinit on error */ |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 376 | static int ehci_bus_resume (struct usb_hcd *hcd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | { |
| 378 | struct ehci_hcd *ehci = hcd_to_ehci (hcd); |
| 379 | u32 temp; |
Alan Stern | 383975d | 2007-05-04 11:52:40 -0400 | [diff] [blame] | 380 | u32 power_okay; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | int i; |
Wang Zhi | d0f2fb2 | 2011-08-17 10:39:31 +0800 | [diff] [blame] | 382 | unsigned long resume_needed = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | |
| 384 | if (time_before (jiffies, ehci->next_statechange)) |
| 385 | msleep(5); |
| 386 | spin_lock_irq (&ehci->lock); |
Alan Stern | 43fe3a9 | 2012-07-11 11:23:16 -0400 | [diff] [blame] | 387 | if (!HCD_HW_ACCESSIBLE(hcd) || ehci->shutdown) |
| 388 | goto shutdown; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | |
Jason Wessel | ad45f1d | 2009-08-20 15:39:58 -0500 | [diff] [blame] | 390 | if (unlikely(ehci->debug)) { |
Jan Beulich | 9fa5780 | 2012-09-18 12:23:02 +0100 | [diff] [blame] | 391 | if (!dbgp_reset_prep(hcd)) |
Jason Wessel | ad45f1d | 2009-08-20 15:39:58 -0500 | [diff] [blame] | 392 | ehci->debug = NULL; |
| 393 | else |
Jan Beulich | 9fa5780 | 2012-09-18 12:23:02 +0100 | [diff] [blame] | 394 | dbgp_external_startup(hcd); |
Jason Wessel | ad45f1d | 2009-08-20 15:39:58 -0500 | [diff] [blame] | 395 | } |
| 396 | |
David Brownell | f03c17f | 2005-11-23 15:45:28 -0800 | [diff] [blame] | 397 | /* Ideally and we've got a real resume here, and no port's power |
| 398 | * was lost. (For PCI, that means Vaux was maintained.) But we |
| 399 | * could instead be restoring a swsusp snapshot -- so that BIOS was |
| 400 | * the last user of the controller, not reset/pm hardware keeping |
| 401 | * state we gave to it. |
| 402 | */ |
Alan Stern | 383975d | 2007-05-04 11:52:40 -0400 | [diff] [blame] | 403 | power_okay = ehci_readl(ehci, &ehci->regs->intr_enable); |
| 404 | ehci_dbg(ehci, "resume root hub%s\n", |
| 405 | power_okay ? "" : " after power loss"); |
David Brownell | f03c17f | 2005-11-23 15:45:28 -0800 | [diff] [blame] | 406 | |
Alan Stern | 8c03356 | 2006-11-09 14:42:16 -0500 | [diff] [blame] | 407 | /* at least some APM implementations will try to deliver |
| 408 | * IRQs right away, so delay them until we're ready. |
| 409 | */ |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 410 | ehci_writel(ehci, 0, &ehci->regs->intr_enable); |
Alan Stern | 8c03356 | 2006-11-09 14:42:16 -0500 | [diff] [blame] | 411 | |
| 412 | /* re-init operational registers */ |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 413 | ehci_writel(ehci, 0, &ehci->regs->segment); |
| 414 | ehci_writel(ehci, ehci->periodic_dma, &ehci->regs->frame_list); |
| 415 | ehci_writel(ehci, (u32) ehci->async->qh_dma, &ehci->regs->async_next); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | |
| 417 | /* restore CMD_RUN, framelist size, and irq threshold */ |
Alan Stern | 3d9545c | 2012-04-23 13:54:36 -0400 | [diff] [blame] | 418 | ehci->command |= CMD_RUN; |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 419 | ehci_writel(ehci, ehci->command, &ehci->regs->command); |
Alan Stern | e879990 | 2011-08-18 16:31:30 -0400 | [diff] [blame] | 420 | ehci->rh_state = EHCI_RH_RUNNING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | |
Peter Chen | 6273f18 | 2012-10-18 12:24:43 +0800 | [diff] [blame] | 422 | /* |
| 423 | * According to Bugzilla #8190, the port status for some controllers |
| 424 | * will be wrong without a delay. At their wrong status, the port |
| 425 | * is enabled, but not suspended neither resumed. |
| 426 | */ |
| 427 | i = HCS_N_PORTS(ehci->hcs_params); |
| 428 | while (i--) { |
| 429 | temp = ehci_readl(ehci, &ehci->regs->port_status[i]); |
| 430 | if ((temp & PORT_PE) && |
| 431 | !(temp & (PORT_SUSPEND | PORT_RESUME))) { |
| 432 | ehci_dbg(ehci, "Port status(0x%x) is wrong\n", temp); |
| 433 | spin_unlock_irq(&ehci->lock); |
| 434 | msleep(8); |
| 435 | spin_lock_irq(&ehci->lock); |
| 436 | break; |
| 437 | } |
| 438 | } |
| 439 | |
Alan Stern | 43fe3a9 | 2012-07-11 11:23:16 -0400 | [diff] [blame] | 440 | if (ehci->shutdown) |
| 441 | goto shutdown; |
Alan Stern | e198a31 | 2007-03-15 15:54:30 -0400 | [diff] [blame] | 442 | |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 443 | /* clear phy low-power mode before resume */ |
Tuomas Tynkkynen | 2cdcec4 | 2013-08-12 16:06:49 +0300 | [diff] [blame] | 444 | if (ehci->bus_suspended && ehci->has_tdi_phy_lpm) { |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 445 | i = HCS_N_PORTS(ehci->hcs_params); |
| 446 | while (i--) { |
| 447 | if (test_bit(i, &ehci->bus_suspended)) { |
Alan Stern | a46af4e | 2012-06-25 12:19:03 -0400 | [diff] [blame] | 448 | u32 __iomem *hostpc_reg = |
| 449 | &ehci->regs->hostpc[i]; |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 450 | |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 451 | temp = ehci_readl(ehci, hostpc_reg); |
| 452 | ehci_writel(ehci, temp & ~HOSTPC_PHCD, |
| 453 | hostpc_reg); |
| 454 | } |
| 455 | } |
| 456 | spin_unlock_irq(&ehci->lock); |
| 457 | msleep(5); |
| 458 | spin_lock_irq(&ehci->lock); |
Alan Stern | 43fe3a9 | 2012-07-11 11:23:16 -0400 | [diff] [blame] | 459 | if (ehci->shutdown) |
| 460 | goto shutdown; |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 461 | } |
| 462 | |
Alan Stern | 8c03356 | 2006-11-09 14:42:16 -0500 | [diff] [blame] | 463 | /* manually resume the ports we suspended during bus_suspend() */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | i = HCS_N_PORTS (ehci->hcs_params); |
| 465 | while (i--) { |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 466 | temp = ehci_readl(ehci, &ehci->regs->port_status [i]); |
Alan Stern | 58a97ff | 2008-04-14 12:17:10 -0400 | [diff] [blame] | 467 | temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS); |
Alan Stern | 8c03356 | 2006-11-09 14:42:16 -0500 | [diff] [blame] | 468 | if (test_bit(i, &ehci->bus_suspended) && |
Vikram Pandita | 3a4e72c | 2008-10-24 23:41:30 +0530 | [diff] [blame] | 469 | (temp & PORT_SUSPEND)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | temp |= PORT_RESUME; |
Wang Zhi | d0f2fb2 | 2011-08-17 10:39:31 +0800 | [diff] [blame] | 471 | set_bit(i, &resume_needed); |
Vikram Pandita | 3a4e72c | 2008-10-24 23:41:30 +0530 | [diff] [blame] | 472 | } |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 473 | ehci_writel(ehci, temp, &ehci->regs->port_status [i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | } |
Vikram Pandita | 3a4e72c | 2008-10-24 23:41:30 +0530 | [diff] [blame] | 475 | |
| 476 | /* msleep for 20ms only if code is trying to resume port */ |
| 477 | if (resume_needed) { |
| 478 | spin_unlock_irq(&ehci->lock); |
| 479 | msleep(20); |
| 480 | spin_lock_irq(&ehci->lock); |
Alan Stern | 43fe3a9 | 2012-07-11 11:23:16 -0400 | [diff] [blame] | 481 | if (ehci->shutdown) |
| 482 | goto shutdown; |
Vikram Pandita | 3a4e72c | 2008-10-24 23:41:30 +0530 | [diff] [blame] | 483 | } |
| 484 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | i = HCS_N_PORTS (ehci->hcs_params); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | while (i--) { |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 487 | temp = ehci_readl(ehci, &ehci->regs->port_status [i]); |
Wang Zhi | d0f2fb2 | 2011-08-17 10:39:31 +0800 | [diff] [blame] | 488 | if (test_bit(i, &resume_needed)) { |
Alan Stern | 24b9081 | 2013-03-18 12:05:42 -0400 | [diff] [blame] | 489 | temp &= ~(PORT_RWC_BITS | PORT_SUSPEND | PORT_RESUME); |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 490 | ehci_writel(ehci, temp, &ehci->regs->port_status [i]); |
Alan Stern | 8c03356 | 2006-11-09 14:42:16 -0500 | [diff] [blame] | 491 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | |
| 494 | ehci->next_statechange = jiffies + msecs_to_jiffies(5); |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 495 | spin_unlock_irq(&ehci->lock); |
| 496 | |
| 497 | ehci_handover_companion_ports(ehci); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | |
| 499 | /* Now we can safely re-enable irqs */ |
Alan Stern | 43fe3a9 | 2012-07-11 11:23:16 -0400 | [diff] [blame] | 500 | spin_lock_irq(&ehci->lock); |
| 501 | if (ehci->shutdown) |
| 502 | goto shutdown; |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 503 | ehci_writel(ehci, INTR_MASK, &ehci->regs->intr_enable); |
Alan Stern | 15be105 | 2012-07-11 11:21:17 -0400 | [diff] [blame] | 504 | (void) ehci_readl(ehci, &ehci->regs->intr_enable); |
Alan Stern | 43fe3a9 | 2012-07-11 11:23:16 -0400 | [diff] [blame] | 505 | spin_unlock_irq(&ehci->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | return 0; |
Alan Stern | 43fe3a9 | 2012-07-11 11:23:16 -0400 | [diff] [blame] | 508 | |
| 509 | shutdown: |
| 510 | spin_unlock_irq(&ehci->lock); |
| 511 | return -ESHUTDOWN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | } |
| 513 | |
| 514 | #else |
| 515 | |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 516 | #define ehci_bus_suspend NULL |
| 517 | #define ehci_bus_resume NULL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | |
| 519 | #endif /* CONFIG_PM */ |
| 520 | |
| 521 | /*-------------------------------------------------------------------------*/ |
| 522 | |
Alan Stern | 57e06c1 | 2007-01-16 11:59:45 -0500 | [diff] [blame] | 523 | /* |
Balaji Rao | 90da096 | 2007-11-22 01:58:14 +0530 | [diff] [blame] | 524 | * Sets the owner of a port |
Alan Stern | 57e06c1 | 2007-01-16 11:59:45 -0500 | [diff] [blame] | 525 | */ |
Balaji Rao | 90da096 | 2007-11-22 01:58:14 +0530 | [diff] [blame] | 526 | static void set_owner(struct ehci_hcd *ehci, int portnum, int new_owner) |
Alan Stern | 57e06c1 | 2007-01-16 11:59:45 -0500 | [diff] [blame] | 527 | { |
Alan Stern | 57e06c1 | 2007-01-16 11:59:45 -0500 | [diff] [blame] | 528 | u32 __iomem *status_reg; |
| 529 | u32 port_status; |
Balaji Rao | 90da096 | 2007-11-22 01:58:14 +0530 | [diff] [blame] | 530 | int try; |
Alan Stern | 57e06c1 | 2007-01-16 11:59:45 -0500 | [diff] [blame] | 531 | |
Balaji Rao | 90da096 | 2007-11-22 01:58:14 +0530 | [diff] [blame] | 532 | status_reg = &ehci->regs->port_status[portnum]; |
Alan Stern | 57e06c1 | 2007-01-16 11:59:45 -0500 | [diff] [blame] | 533 | |
| 534 | /* |
| 535 | * The controller won't set the OWNER bit if the port is |
| 536 | * enabled, so this loop will sometimes require at least two |
| 537 | * iterations: one to disable the port and one to set OWNER. |
| 538 | */ |
Alan Stern | 57e06c1 | 2007-01-16 11:59:45 -0500 | [diff] [blame] | 539 | for (try = 4; try > 0; --try) { |
| 540 | spin_lock_irq(&ehci->lock); |
| 541 | port_status = ehci_readl(ehci, status_reg); |
| 542 | if ((port_status & PORT_OWNER) == new_owner |
| 543 | || (port_status & (PORT_OWNER | PORT_CONNECT)) |
| 544 | == 0) |
| 545 | try = 0; |
| 546 | else { |
| 547 | port_status ^= PORT_OWNER; |
| 548 | port_status &= ~(PORT_PE | PORT_RWC_BITS); |
| 549 | ehci_writel(ehci, port_status, status_reg); |
| 550 | } |
| 551 | spin_unlock_irq(&ehci->lock); |
| 552 | if (try > 1) |
| 553 | msleep(5); |
| 554 | } |
Balaji Rao | 90da096 | 2007-11-22 01:58:14 +0530 | [diff] [blame] | 555 | } |
| 556 | |
Alan Stern | 57e06c1 | 2007-01-16 11:59:45 -0500 | [diff] [blame] | 557 | /*-------------------------------------------------------------------------*/ |
| 558 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | static int check_reset_complete ( |
| 560 | struct ehci_hcd *ehci, |
| 561 | int index, |
Alan Stern | e631656 | 2007-01-16 11:58:00 -0500 | [diff] [blame] | 562 | u32 __iomem *status_reg, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | int port_status |
| 564 | ) { |
David Brownell | cd4cdc9 | 2008-01-24 12:39:43 -0800 | [diff] [blame] | 565 | if (!(port_status & PORT_CONNECT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | return port_status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | |
| 568 | /* if reset finished and it's still not enabled -- handoff */ |
| 569 | if (!(port_status & PORT_PE)) { |
| 570 | |
| 571 | /* with integrated TT, there's nobody to hand it to! */ |
| 572 | if (ehci_is_TDI(ehci)) { |
| 573 | ehci_dbg (ehci, |
| 574 | "Failed to enable port %d on root hub TT\n", |
| 575 | index+1); |
| 576 | return port_status; |
| 577 | } |
| 578 | |
| 579 | ehci_dbg (ehci, "port %d full speed --> companion\n", |
| 580 | index + 1); |
| 581 | |
| 582 | // what happens if HCS_N_CC(params) == 0 ? |
| 583 | port_status |= PORT_OWNER; |
David Brownell | 10f6524 | 2005-08-31 10:55:38 -0700 | [diff] [blame] | 584 | port_status &= ~PORT_RWC_BITS; |
Alan Stern | e631656 | 2007-01-16 11:58:00 -0500 | [diff] [blame] | 585 | ehci_writel(ehci, port_status, status_reg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | |
Vitaly Bordug | 796bcae | 2008-11-09 19:43:30 +0100 | [diff] [blame] | 587 | /* ensure 440EPX ohci controller state is operational */ |
| 588 | if (ehci->has_amcc_usb23) |
| 589 | set_ohci_hcfs(ehci, 1); |
| 590 | } else { |
Peter Chen | 0ca7eb2 | 2012-03-29 09:50:06 +0800 | [diff] [blame] | 591 | ehci_dbg(ehci, "port %d reset complete, port enabled\n", |
| 592 | index + 1); |
Vitaly Bordug | 796bcae | 2008-11-09 19:43:30 +0100 | [diff] [blame] | 593 | /* ensure 440EPx ohci controller state is suspended */ |
| 594 | if (ehci->has_amcc_usb23) |
| 595 | set_ohci_hcfs(ehci, 0); |
| 596 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | |
| 598 | return port_status; |
| 599 | } |
| 600 | |
| 601 | /*-------------------------------------------------------------------------*/ |
| 602 | |
| 603 | |
| 604 | /* build "status change" packet (one or two bytes) from HC registers */ |
| 605 | |
| 606 | static int |
| 607 | ehci_hub_status_data (struct usb_hcd *hcd, char *buf) |
| 608 | { |
| 609 | struct ehci_hcd *ehci = hcd_to_ehci (hcd); |
Alan Stern | a448e4d | 2012-04-03 15:24:30 -0400 | [diff] [blame] | 610 | u32 temp, status; |
David Brownell | 93f1a47 | 2006-11-16 23:34:58 -0800 | [diff] [blame] | 611 | u32 mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | int ports, i, retval = 1; |
| 613 | unsigned long flags; |
Alan Stern | 4dd405a | 2013-03-18 12:05:08 -0400 | [diff] [blame] | 614 | u32 ppcd = ~0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | /* init status to no-changes */ |
| 617 | buf [0] = 0; |
| 618 | ports = HCS_N_PORTS (ehci->hcs_params); |
| 619 | if (ports > 7) { |
| 620 | buf [1] = 0; |
| 621 | retval++; |
| 622 | } |
David Brownell | 53bd6a6 | 2006-08-30 14:50:06 -0700 | [diff] [blame] | 623 | |
Alan Stern | a448e4d | 2012-04-03 15:24:30 -0400 | [diff] [blame] | 624 | /* Inform the core about resumes-in-progress by returning |
| 625 | * a non-zero value even if there are no status changes. |
| 626 | */ |
| 627 | status = ehci->resuming_ports; |
| 628 | |
David Brownell | 93f1a47 | 2006-11-16 23:34:58 -0800 | [diff] [blame] | 629 | /* Some boards (mostly VIA?) report bogus overcurrent indications, |
| 630 | * causing massive log spam unless we completely ignore them. It |
Robert P. J. Day | 3a4fa0a | 2007-10-19 23:10:43 +0200 | [diff] [blame] | 631 | * may be relevant that VIA VT8235 controllers, where PORT_POWER is |
David Brownell | 93f1a47 | 2006-11-16 23:34:58 -0800 | [diff] [blame] | 632 | * always set, seem to clear PORT_OCC and PORT_CSC when writing to |
| 633 | * PORT_POWER; that's surprising, but maybe within-spec. |
| 634 | */ |
| 635 | if (!ignore_oc) |
| 636 | mask = PORT_CSC | PORT_PEC | PORT_OCC; |
| 637 | else |
| 638 | mask = PORT_CSC | PORT_PEC; |
| 639 | // PORT_RESUME from hardware ~= PORT_STAT_C_SUSPEND |
| 640 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | /* no hub change reports (bit 0) for now (power, ...) */ |
| 642 | |
| 643 | /* port N changes (bit N)? */ |
| 644 | spin_lock_irqsave (&ehci->lock, flags); |
Alek Du | 5a9cdf3 | 2010-06-04 15:47:56 +0800 | [diff] [blame] | 645 | |
| 646 | /* get per-port change detect bits */ |
| 647 | if (ehci->has_ppcd) |
| 648 | ppcd = ehci_readl(ehci, &ehci->regs->status) >> 16; |
| 649 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | for (i = 0; i < ports; i++) { |
Alek Du | 5a9cdf3 | 2010-06-04 15:47:56 +0800 | [diff] [blame] | 651 | /* leverage per-port change bits feature */ |
Alan Stern | 4dd405a | 2013-03-18 12:05:08 -0400 | [diff] [blame] | 652 | if (ppcd & (1 << i)) |
| 653 | temp = ehci_readl(ehci, &ehci->regs->port_status[i]); |
| 654 | else |
| 655 | temp = 0; |
Alan Stern | 625b5c9 | 2007-01-16 11:58:47 -0500 | [diff] [blame] | 656 | |
| 657 | /* |
| 658 | * Return status information even for ports with OWNER set. |
| 659 | * Otherwise khubd wouldn't see the disconnect event when a |
| 660 | * high-speed device is switched over to the companion |
| 661 | * controller by the user. |
| 662 | */ |
| 663 | |
Alan Stern | eafe5b9 | 2008-10-06 11:25:53 -0400 | [diff] [blame] | 664 | if ((temp & mask) != 0 || test_bit(i, &ehci->port_c_suspend) |
| 665 | || (ehci->reset_done[i] && time_after_eq( |
| 666 | jiffies, ehci->reset_done[i]))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | if (i < 7) |
| 668 | buf [0] |= 1 << (i + 1); |
| 669 | else |
| 670 | buf [1] |= 1 << (i - 7); |
| 671 | status = STS_PCD; |
| 672 | } |
| 673 | } |
Alan Stern | ee74290 | 2013-01-25 17:17:43 -0500 | [diff] [blame] | 674 | |
| 675 | /* If a resume is in progress, make sure it can finish */ |
| 676 | if (ehci->resuming_ports) |
| 677 | mod_timer(&hcd->rh_timer, jiffies + msecs_to_jiffies(25)); |
| 678 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | spin_unlock_irqrestore (&ehci->lock, flags); |
| 680 | return status ? retval : 0; |
| 681 | } |
| 682 | |
| 683 | /*-------------------------------------------------------------------------*/ |
| 684 | |
| 685 | static void |
| 686 | ehci_hub_descriptor ( |
| 687 | struct ehci_hcd *ehci, |
| 688 | struct usb_hub_descriptor *desc |
| 689 | ) { |
| 690 | int ports = HCS_N_PORTS (ehci->hcs_params); |
| 691 | u16 temp; |
| 692 | |
| 693 | desc->bDescriptorType = 0x29; |
| 694 | desc->bPwrOn2PwrGood = 10; /* ehci 1.0, 2.3.9 says 20ms max */ |
| 695 | desc->bHubContrCurrent = 0; |
| 696 | |
| 697 | desc->bNbrPorts = ports; |
| 698 | temp = 1 + (ports / 8); |
| 699 | desc->bDescLength = 7 + 2 * temp; |
| 700 | |
| 701 | /* two bitmaps: ports removable, and usb 1.0 legacy PortPwrCtrlMask */ |
John Youn | dbe79bb | 2001-09-17 00:00:00 -0700 | [diff] [blame] | 702 | memset(&desc->u.hs.DeviceRemovable[0], 0, temp); |
| 703 | memset(&desc->u.hs.DeviceRemovable[temp], 0xff, temp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | |
| 705 | temp = 0x0008; /* per-port overcurrent reporting */ |
| 706 | if (HCS_PPC (ehci->hcs_params)) |
| 707 | temp |= 0x0001; /* per-port power control */ |
David Brownell | 56c1e26 | 2005-04-09 09:00:29 -0700 | [diff] [blame] | 708 | else |
| 709 | temp |= 0x0002; /* no power switching */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | #if 0 |
| 711 | // re-enable when we support USB_PORT_FEAT_INDICATOR below. |
| 712 | if (HCS_INDICATOR (ehci->hcs_params)) |
| 713 | temp |= 0x0080; /* per-port indicators (LEDs) */ |
| 714 | #endif |
Al Viro | fd05e72 | 2008-04-28 07:00:16 +0100 | [diff] [blame] | 715 | desc->wHubCharacteristics = cpu_to_le16(temp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | } |
| 717 | |
| 718 | /*-------------------------------------------------------------------------*/ |
Jack Pham | 726a85c | 2013-08-13 13:40:13 -0700 | [diff] [blame] | 719 | #ifdef CONFIG_USB_HCD_TEST_MODE |
| 720 | |
Manu Gautam | 9841f37 | 2013-08-08 16:49:24 -0700 | [diff] [blame] | 721 | #define EHSET_TEST_SINGLE_STEP_SET_FEATURE 0x06 |
| 722 | |
| 723 | static void usb_ehset_completion(struct urb *urb) |
| 724 | { |
| 725 | struct completion *done = urb->context; |
| 726 | |
| 727 | complete(done); |
| 728 | } |
| 729 | static int submit_single_step_set_feature( |
| 730 | struct usb_hcd *hcd, |
| 731 | struct urb *urb, |
| 732 | int is_setup |
| 733 | ); |
| 734 | |
| 735 | /* |
| 736 | * Allocate and initialize a control URB. This request will be used by the |
| 737 | * EHSET SINGLE_STEP_SET_FEATURE test in which the DATA and STATUS stages |
| 738 | * of the GetDescriptor request are sent 15 seconds after the SETUP stage. |
| 739 | * Return NULL if failed. |
| 740 | */ |
| 741 | static struct urb *request_single_step_set_feature_urb( |
| 742 | struct usb_device *udev, |
| 743 | void *dr, |
| 744 | void *buf, |
| 745 | struct completion *done |
| 746 | ) { |
| 747 | struct urb *urb; |
| 748 | struct usb_hcd *hcd = bus_to_hcd(udev->bus); |
| 749 | struct usb_host_endpoint *ep; |
| 750 | |
| 751 | urb = usb_alloc_urb(0, GFP_KERNEL); |
| 752 | if (!urb) |
| 753 | return NULL; |
| 754 | |
| 755 | urb->pipe = usb_rcvctrlpipe(udev, 0); |
| 756 | ep = (usb_pipein(urb->pipe) ? udev->ep_in : udev->ep_out) |
| 757 | [usb_pipeendpoint(urb->pipe)]; |
| 758 | if (!ep) { |
| 759 | usb_free_urb(urb); |
| 760 | return NULL; |
| 761 | } |
| 762 | |
| 763 | urb->ep = ep; |
| 764 | urb->dev = udev; |
| 765 | urb->setup_packet = (void *)dr; |
| 766 | urb->transfer_buffer = buf; |
| 767 | urb->transfer_buffer_length = USB_DT_DEVICE_SIZE; |
| 768 | urb->complete = usb_ehset_completion; |
| 769 | urb->status = -EINPROGRESS; |
| 770 | urb->actual_length = 0; |
| 771 | urb->transfer_flags = URB_DIR_IN; |
| 772 | usb_get_urb(urb); |
| 773 | atomic_inc(&urb->use_count); |
| 774 | atomic_inc(&urb->dev->urbnum); |
| 775 | urb->setup_dma = dma_map_single( |
| 776 | hcd->self.controller, |
| 777 | urb->setup_packet, |
| 778 | sizeof(struct usb_ctrlrequest), |
| 779 | DMA_TO_DEVICE); |
| 780 | urb->transfer_dma = dma_map_single( |
| 781 | hcd->self.controller, |
| 782 | urb->transfer_buffer, |
| 783 | urb->transfer_buffer_length, |
| 784 | DMA_FROM_DEVICE); |
| 785 | urb->context = done; |
| 786 | return urb; |
| 787 | } |
| 788 | |
| 789 | static int ehset_single_step_set_feature(struct usb_hcd *hcd, int port) |
| 790 | { |
| 791 | int retval = -ENOMEM; |
| 792 | struct usb_ctrlrequest *dr; |
| 793 | struct urb *urb; |
| 794 | struct usb_device *udev; |
| 795 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 796 | struct usb_device_descriptor *buf; |
| 797 | DECLARE_COMPLETION_ONSTACK(done); |
| 798 | |
| 799 | /* Obtain udev of the rhub's child port */ |
| 800 | udev = usb_hub_find_child(hcd->self.root_hub, port); |
| 801 | if (!udev) { |
| 802 | ehci_err(ehci, "No device attached to the RootHub\n"); |
| 803 | return -ENODEV; |
| 804 | } |
| 805 | buf = kmalloc(USB_DT_DEVICE_SIZE, GFP_KERNEL); |
| 806 | if (!buf) |
| 807 | return -ENOMEM; |
| 808 | |
| 809 | dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL); |
| 810 | if (!dr) { |
| 811 | kfree(buf); |
| 812 | return -ENOMEM; |
| 813 | } |
| 814 | |
| 815 | /* Fill Setup packet for GetDescriptor */ |
| 816 | dr->bRequestType = USB_DIR_IN; |
| 817 | dr->bRequest = USB_REQ_GET_DESCRIPTOR; |
| 818 | dr->wValue = cpu_to_le16(USB_DT_DEVICE << 8); |
| 819 | dr->wIndex = 0; |
| 820 | dr->wLength = cpu_to_le16(USB_DT_DEVICE_SIZE); |
| 821 | urb = request_single_step_set_feature_urb(udev, dr, buf, &done); |
| 822 | if (!urb) |
| 823 | goto cleanup; |
| 824 | |
| 825 | /* Submit just the SETUP stage */ |
| 826 | retval = submit_single_step_set_feature(hcd, urb, 1); |
| 827 | if (retval) |
| 828 | goto out1; |
| 829 | if (!wait_for_completion_timeout(&done, msecs_to_jiffies(2000))) { |
| 830 | usb_kill_urb(urb); |
| 831 | retval = -ETIMEDOUT; |
| 832 | ehci_err(ehci, "%s SETUP stage timed out on ep0\n", __func__); |
| 833 | goto out1; |
| 834 | } |
| 835 | msleep(15 * 1000); |
| 836 | |
| 837 | /* Complete remaining DATA and STATUS stages using the same URB */ |
| 838 | urb->status = -EINPROGRESS; |
| 839 | usb_get_urb(urb); |
| 840 | atomic_inc(&urb->use_count); |
| 841 | atomic_inc(&urb->dev->urbnum); |
| 842 | retval = submit_single_step_set_feature(hcd, urb, 0); |
| 843 | if (!retval && !wait_for_completion_timeout(&done, |
| 844 | msecs_to_jiffies(2000))) { |
| 845 | usb_kill_urb(urb); |
| 846 | retval = -ETIMEDOUT; |
| 847 | ehci_err(ehci, "%s IN stage timed out on ep0\n", __func__); |
| 848 | } |
| 849 | out1: |
| 850 | usb_free_urb(urb); |
| 851 | cleanup: |
| 852 | kfree(dr); |
| 853 | kfree(buf); |
| 854 | return retval; |
| 855 | } |
Jack Pham | 726a85c | 2013-08-13 13:40:13 -0700 | [diff] [blame] | 856 | #endif /* CONFIG_USB_HCD_TEST_MODE */ |
Manu Gautam | 9841f37 | 2013-08-08 16:49:24 -0700 | [diff] [blame] | 857 | /*-------------------------------------------------------------------------*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | |
Laurent Pinchart | 3776993 | 2014-04-16 18:00:10 +0200 | [diff] [blame^] | 859 | int ehci_hub_control( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | struct usb_hcd *hcd, |
| 861 | u16 typeReq, |
| 862 | u16 wValue, |
| 863 | u16 wIndex, |
| 864 | char *buf, |
| 865 | u16 wLength |
| 866 | ) { |
| 867 | struct ehci_hcd *ehci = hcd_to_ehci (hcd); |
| 868 | int ports = HCS_N_PORTS (ehci->hcs_params); |
Alan Stern | 383975d | 2007-05-04 11:52:40 -0400 | [diff] [blame] | 869 | u32 __iomem *status_reg = &ehci->regs->port_status[ |
| 870 | (wIndex & 0xff) - 1]; |
Alan Stern | a46af4e | 2012-06-25 12:19:03 -0400 | [diff] [blame] | 871 | u32 __iomem *hostpc_reg = &ehci->regs->hostpc[(wIndex & 0xff) - 1]; |
Alek Du | 331ac6b | 2009-07-13 12:41:20 +0800 | [diff] [blame] | 872 | u32 temp, temp1, status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | unsigned long flags; |
| 874 | int retval = 0; |
David Brownell | f0d7f27 | 2006-11-16 23:56:15 -0800 | [diff] [blame] | 875 | unsigned selector; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | |
| 877 | /* |
| 878 | * FIXME: support SetPortFeatures USB_PORT_FEAT_INDICATOR. |
| 879 | * HCS_INDICATOR may say we can change LEDs to off/amber/green. |
| 880 | * (track current state ourselves) ... blink for diagnostics, |
| 881 | * power, "this is the one", etc. EHCI spec supports this. |
| 882 | */ |
| 883 | |
| 884 | spin_lock_irqsave (&ehci->lock, flags); |
| 885 | switch (typeReq) { |
| 886 | case ClearHubFeature: |
| 887 | switch (wValue) { |
| 888 | case C_HUB_LOCAL_POWER: |
| 889 | case C_HUB_OVER_CURRENT: |
| 890 | /* no hub-wide feature/status flags */ |
| 891 | break; |
| 892 | default: |
| 893 | goto error; |
| 894 | } |
| 895 | break; |
| 896 | case ClearPortFeature: |
| 897 | if (!wIndex || wIndex > ports) |
| 898 | goto error; |
| 899 | wIndex--; |
Alan Stern | e631656 | 2007-01-16 11:58:00 -0500 | [diff] [blame] | 900 | temp = ehci_readl(ehci, status_reg); |
Stephen Warren | 6d5f89c | 2012-04-18 15:32:46 -0600 | [diff] [blame] | 901 | temp &= ~PORT_RWC_BITS; |
Alan Stern | 625b5c9 | 2007-01-16 11:58:47 -0500 | [diff] [blame] | 902 | |
| 903 | /* |
| 904 | * Even if OWNER is set, so the port is owned by the |
| 905 | * companion controller, khubd needs to be able to clear |
| 906 | * the port-change status bits (especially |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 907 | * USB_PORT_STAT_C_CONNECTION). |
Alan Stern | 625b5c9 | 2007-01-16 11:58:47 -0500 | [diff] [blame] | 908 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | |
| 910 | switch (wValue) { |
| 911 | case USB_PORT_FEAT_ENABLE: |
Alan Stern | e631656 | 2007-01-16 11:58:00 -0500 | [diff] [blame] | 912 | ehci_writel(ehci, temp & ~PORT_PE, status_reg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | break; |
| 914 | case USB_PORT_FEAT_C_ENABLE: |
Stephen Warren | 6d5f89c | 2012-04-18 15:32:46 -0600 | [diff] [blame] | 915 | ehci_writel(ehci, temp | PORT_PEC, status_reg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | break; |
| 917 | case USB_PORT_FEAT_SUSPEND: |
| 918 | if (temp & PORT_RESET) |
| 919 | goto error; |
David Brownell | f8aeb3b | 2006-01-20 13:55:14 -0800 | [diff] [blame] | 920 | if (ehci->no_selective_suspend) |
| 921 | break; |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 922 | #ifdef CONFIG_USB_OTG |
| 923 | if ((hcd->self.otg_port == (wIndex + 1)) |
| 924 | && hcd->self.b_hnp_enable) { |
Richard Zhao | c2e935a | 2012-06-13 20:34:12 +0800 | [diff] [blame] | 925 | otg_start_hnp(hcd->phy->otg); |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 926 | break; |
| 927 | } |
| 928 | #endif |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 929 | if (!(temp & PORT_SUSPEND)) |
| 930 | break; |
| 931 | if ((temp & PORT_PE) == 0) |
| 932 | goto error; |
| 933 | |
| 934 | /* clear phy low-power mode before resume */ |
Tuomas Tynkkynen | 2cdcec4 | 2013-08-12 16:06:49 +0300 | [diff] [blame] | 935 | if (ehci->has_tdi_phy_lpm) { |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 936 | temp1 = ehci_readl(ehci, hostpc_reg); |
| 937 | ehci_writel(ehci, temp1 & ~HOSTPC_PHCD, |
Alek Du | eab80de | 2010-05-10 11:17:49 +0800 | [diff] [blame] | 938 | hostpc_reg); |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 939 | spin_unlock_irqrestore(&ehci->lock, flags); |
| 940 | msleep(5);/* wait to leave low-power mode */ |
| 941 | spin_lock_irqsave(&ehci->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | } |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 943 | /* resume signaling for 20 msec */ |
Stephen Warren | 6d5f89c | 2012-04-18 15:32:46 -0600 | [diff] [blame] | 944 | temp &= ~PORT_WAKE_BITS; |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 945 | ehci_writel(ehci, temp | PORT_RESUME, status_reg); |
| 946 | ehci->reset_done[wIndex] = jiffies |
| 947 | + msecs_to_jiffies(20); |
Alan Stern | 3a20446 | 2013-08-01 17:09:23 -0400 | [diff] [blame] | 948 | set_bit(wIndex, &ehci->resuming_ports); |
| 949 | usb_hcd_start_port_resume(&hcd->self, wIndex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | break; |
| 951 | case USB_PORT_FEAT_C_SUSPEND: |
Alan Stern | d1f114d | 2008-05-20 16:58:58 -0400 | [diff] [blame] | 952 | clear_bit(wIndex, &ehci->port_c_suspend); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | break; |
| 954 | case USB_PORT_FEAT_POWER: |
| 955 | if (HCS_PPC (ehci->hcs_params)) |
Stephen Warren | 6d5f89c | 2012-04-18 15:32:46 -0600 | [diff] [blame] | 956 | ehci_writel(ehci, temp & ~PORT_POWER, |
| 957 | status_reg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | break; |
| 959 | case USB_PORT_FEAT_C_CONNECTION: |
Stephen Warren | 6d5f89c | 2012-04-18 15:32:46 -0600 | [diff] [blame] | 960 | ehci_writel(ehci, temp | PORT_CSC, status_reg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | break; |
| 962 | case USB_PORT_FEAT_C_OVER_CURRENT: |
Stephen Warren | 6d5f89c | 2012-04-18 15:32:46 -0600 | [diff] [blame] | 963 | ehci_writel(ehci, temp | PORT_OCC, status_reg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | break; |
| 965 | case USB_PORT_FEAT_C_RESET: |
| 966 | /* GetPortStatus clears reset */ |
| 967 | break; |
| 968 | default: |
| 969 | goto error; |
| 970 | } |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 971 | ehci_readl(ehci, &ehci->regs->command); /* unblock posted write */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | break; |
| 973 | case GetHubDescriptor: |
| 974 | ehci_hub_descriptor (ehci, (struct usb_hub_descriptor *) |
| 975 | buf); |
| 976 | break; |
| 977 | case GetHubStatus: |
| 978 | /* no hub-wide feature/status flags */ |
| 979 | memset (buf, 0, 4); |
| 980 | //cpu_to_le32s ((u32 *) buf); |
| 981 | break; |
| 982 | case GetPortStatus: |
| 983 | if (!wIndex || wIndex > ports) |
| 984 | goto error; |
| 985 | wIndex--; |
| 986 | status = 0; |
Alan Stern | e631656 | 2007-01-16 11:58:00 -0500 | [diff] [blame] | 987 | temp = ehci_readl(ehci, status_reg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | |
| 989 | // wPortChange bits |
| 990 | if (temp & PORT_CSC) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 991 | status |= USB_PORT_STAT_C_CONNECTION << 16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | if (temp & PORT_PEC) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 993 | status |= USB_PORT_STAT_C_ENABLE << 16; |
Christian Engelmayer | 756aa6b | 2007-05-30 11:04:48 -0700 | [diff] [blame] | 994 | |
| 995 | if ((temp & PORT_OCC) && !ignore_oc){ |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 996 | status |= USB_PORT_STAT_C_OVERCURRENT << 16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 997 | |
Christian Engelmayer | 756aa6b | 2007-05-30 11:04:48 -0700 | [diff] [blame] | 998 | /* |
| 999 | * Hubs should disable port power on over-current. |
| 1000 | * However, not all EHCI implementations do this |
| 1001 | * automatically, even if they _do_ support per-port |
| 1002 | * power switching; they're allowed to just limit the |
| 1003 | * current. khubd will turn the power back on. |
| 1004 | */ |
Christian Engelmayer | e6604a7 | 2013-04-03 12:18:51 +0200 | [diff] [blame] | 1005 | if (((temp & PORT_OC) || (ehci->need_oc_pp_cycle)) |
| 1006 | && HCS_PPC(ehci->hcs_params)) { |
Christian Engelmayer | 756aa6b | 2007-05-30 11:04:48 -0700 | [diff] [blame] | 1007 | ehci_writel(ehci, |
| 1008 | temp & ~(PORT_RWC_BITS | PORT_POWER), |
| 1009 | status_reg); |
Sergei Shtylyov | 81463c1 | 2011-07-06 23:19:38 +0400 | [diff] [blame] | 1010 | temp = ehci_readl(ehci, status_reg); |
Christian Engelmayer | 756aa6b | 2007-05-30 11:04:48 -0700 | [diff] [blame] | 1011 | } |
| 1012 | } |
| 1013 | |
Alan Stern | 6753f4c | 2013-08-01 17:09:28 -0400 | [diff] [blame] | 1014 | /* no reset or resume pending */ |
| 1015 | if (!ehci->reset_done[wIndex]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | |
Alan Stern | 629e442 | 2007-01-22 16:08:53 -0500 | [diff] [blame] | 1017 | /* Remote Wakeup received? */ |
Alan Stern | 6753f4c | 2013-08-01 17:09:28 -0400 | [diff] [blame] | 1018 | if (temp & PORT_RESUME) { |
Alan Stern | 629e442 | 2007-01-22 16:08:53 -0500 | [diff] [blame] | 1019 | /* resume signaling for 20 msec */ |
| 1020 | ehci->reset_done[wIndex] = jiffies |
| 1021 | + msecs_to_jiffies(20); |
Alan Stern | f292e7f | 2013-01-25 17:09:49 -0500 | [diff] [blame] | 1022 | usb_hcd_start_port_resume(&hcd->self, wIndex); |
Roger Quadros | 47a64a1 | 2013-07-09 17:03:50 +0300 | [diff] [blame] | 1023 | set_bit(wIndex, &ehci->resuming_ports); |
Alan Stern | 629e442 | 2007-01-22 16:08:53 -0500 | [diff] [blame] | 1024 | /* check the port again */ |
| 1025 | mod_timer(&ehci_to_hcd(ehci)->rh_timer, |
| 1026 | ehci->reset_done[wIndex]); |
| 1027 | } |
| 1028 | |
Alan Stern | 6753f4c | 2013-08-01 17:09:28 -0400 | [diff] [blame] | 1029 | /* reset or resume not yet complete */ |
| 1030 | } else if (!time_after_eq(jiffies, ehci->reset_done[wIndex])) { |
| 1031 | ; /* wait until it is complete */ |
Alan Stern | 629e442 | 2007-01-22 16:08:53 -0500 | [diff] [blame] | 1032 | |
Alan Stern | 6753f4c | 2013-08-01 17:09:28 -0400 | [diff] [blame] | 1033 | /* resume completed */ |
| 1034 | } else if (test_bit(wIndex, &ehci->resuming_ports)) { |
| 1035 | clear_bit(wIndex, &ehci->suspended_ports); |
| 1036 | set_bit(wIndex, &ehci->port_c_suspend); |
| 1037 | ehci->reset_done[wIndex] = 0; |
| 1038 | usb_hcd_end_port_resume(&hcd->self, wIndex); |
| 1039 | |
| 1040 | /* stop resume signaling */ |
| 1041 | temp &= ~(PORT_RWC_BITS | PORT_SUSPEND | PORT_RESUME); |
| 1042 | ehci_writel(ehci, temp, status_reg); |
| 1043 | clear_bit(wIndex, &ehci->resuming_ports); |
| 1044 | retval = ehci_handshake(ehci, status_reg, |
| 1045 | PORT_RESUME, 0, 2000 /* 2msec */); |
| 1046 | if (retval != 0) { |
| 1047 | ehci_err(ehci, "port %d resume error %d\n", |
Alan Stern | 629e442 | 2007-01-22 16:08:53 -0500 | [diff] [blame] | 1048 | wIndex + 1, retval); |
Alan Stern | 6753f4c | 2013-08-01 17:09:28 -0400 | [diff] [blame] | 1049 | goto error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | } |
Alan Stern | 6753f4c | 2013-08-01 17:09:28 -0400 | [diff] [blame] | 1051 | temp = ehci_readl(ehci, status_reg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1052 | |
| 1053 | /* whoever resets must GetPortStatus to complete it!! */ |
Alan Stern | 6753f4c | 2013-08-01 17:09:28 -0400 | [diff] [blame] | 1054 | } else { |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 1055 | status |= USB_PORT_STAT_C_RESET << 16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | ehci->reset_done [wIndex] = 0; |
| 1057 | |
| 1058 | /* force reset to complete */ |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 1059 | ehci_writel(ehci, temp & ~(PORT_RWC_BITS | PORT_RESET), |
Alan Stern | e631656 | 2007-01-16 11:58:00 -0500 | [diff] [blame] | 1060 | status_reg); |
David Brownell | c22fa3a | 2005-06-13 07:15:28 -0700 | [diff] [blame] | 1061 | /* REVISIT: some hardware needs 550+ usec to clear |
| 1062 | * this bit; seems too long to spin routinely... |
| 1063 | */ |
Manjunath Goudar | 2f3a6b8 | 2013-06-13 11:24:09 -0600 | [diff] [blame] | 1064 | retval = ehci_handshake(ehci, status_reg, |
Dinh Nguyen | 6307e09 | 2010-04-13 11:13:15 -0500 | [diff] [blame] | 1065 | PORT_RESET, 0, 1000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | if (retval != 0) { |
| 1067 | ehci_err (ehci, "port %d reset error %d\n", |
| 1068 | wIndex + 1, retval); |
| 1069 | goto error; |
| 1070 | } |
| 1071 | |
| 1072 | /* see what we found out */ |
Alan Stern | e631656 | 2007-01-16 11:58:00 -0500 | [diff] [blame] | 1073 | temp = check_reset_complete (ehci, wIndex, status_reg, |
| 1074 | ehci_readl(ehci, status_reg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1075 | } |
| 1076 | |
Alan Stern | 57e06c1 | 2007-01-16 11:59:45 -0500 | [diff] [blame] | 1077 | /* transfer dedicated ports to the companion hc */ |
| 1078 | if ((temp & PORT_CONNECT) && |
| 1079 | test_bit(wIndex, &ehci->companion_ports)) { |
| 1080 | temp &= ~PORT_RWC_BITS; |
| 1081 | temp |= PORT_OWNER; |
| 1082 | ehci_writel(ehci, temp, status_reg); |
| 1083 | ehci_dbg(ehci, "port %d --> companion\n", wIndex + 1); |
| 1084 | temp = ehci_readl(ehci, status_reg); |
| 1085 | } |
| 1086 | |
Alan Stern | 625b5c9 | 2007-01-16 11:58:47 -0500 | [diff] [blame] | 1087 | /* |
| 1088 | * Even if OWNER is set, there's no harm letting khubd |
| 1089 | * see the wPortStatus values (they should all be 0 except |
| 1090 | * for PORT_POWER anyway). |
| 1091 | */ |
| 1092 | |
| 1093 | if (temp & PORT_CONNECT) { |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 1094 | status |= USB_PORT_STAT_CONNECTION; |
Alan Stern | 625b5c9 | 2007-01-16 11:58:47 -0500 | [diff] [blame] | 1095 | // status may be from integrated TT |
Alek Du | 331ac6b | 2009-07-13 12:41:20 +0800 | [diff] [blame] | 1096 | if (ehci->has_hostpc) { |
| 1097 | temp1 = ehci_readl(ehci, hostpc_reg); |
| 1098 | status |= ehci_port_speed(ehci, temp1); |
| 1099 | } else |
| 1100 | status |= ehci_port_speed(ehci, temp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | } |
Alan Stern | 625b5c9 | 2007-01-16 11:58:47 -0500 | [diff] [blame] | 1102 | if (temp & PORT_PE) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 1103 | status |= USB_PORT_STAT_ENABLE; |
Alan Stern | eafe5b9 | 2008-10-06 11:25:53 -0400 | [diff] [blame] | 1104 | |
| 1105 | /* maybe the port was unsuspended without our knowledge */ |
| 1106 | if (temp & (PORT_SUSPEND|PORT_RESUME)) { |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 1107 | status |= USB_PORT_STAT_SUSPEND; |
Alan Stern | eafe5b9 | 2008-10-06 11:25:53 -0400 | [diff] [blame] | 1108 | } else if (test_bit(wIndex, &ehci->suspended_ports)) { |
| 1109 | clear_bit(wIndex, &ehci->suspended_ports); |
Alan Stern | a448e4d | 2012-04-03 15:24:30 -0400 | [diff] [blame] | 1110 | clear_bit(wIndex, &ehci->resuming_ports); |
Alan Stern | eafe5b9 | 2008-10-06 11:25:53 -0400 | [diff] [blame] | 1111 | ehci->reset_done[wIndex] = 0; |
| 1112 | if (temp & PORT_PE) |
| 1113 | set_bit(wIndex, &ehci->port_c_suspend); |
Alan Stern | f292e7f | 2013-01-25 17:09:49 -0500 | [diff] [blame] | 1114 | usb_hcd_end_port_resume(&hcd->self, wIndex); |
Alan Stern | eafe5b9 | 2008-10-06 11:25:53 -0400 | [diff] [blame] | 1115 | } |
| 1116 | |
Alan Stern | 625b5c9 | 2007-01-16 11:58:47 -0500 | [diff] [blame] | 1117 | if (temp & PORT_OC) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 1118 | status |= USB_PORT_STAT_OVERCURRENT; |
Alan Stern | 625b5c9 | 2007-01-16 11:58:47 -0500 | [diff] [blame] | 1119 | if (temp & PORT_RESET) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 1120 | status |= USB_PORT_STAT_RESET; |
Alan Stern | 625b5c9 | 2007-01-16 11:58:47 -0500 | [diff] [blame] | 1121 | if (temp & PORT_POWER) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 1122 | status |= USB_PORT_STAT_POWER; |
Alan Stern | d1f114d | 2008-05-20 16:58:58 -0400 | [diff] [blame] | 1123 | if (test_bit(wIndex, &ehci->port_c_suspend)) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 1124 | status |= USB_PORT_STAT_C_SUSPEND << 16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | |
Oliver Neukum | bbcd5ca | 2013-11-18 13:23:01 +0100 | [diff] [blame] | 1126 | if (status & ~0xffff) /* only if wPortChange is interesting */ |
| 1127 | dbg_port(ehci, "GetStatus", wIndex + 1, temp); |
Harvey Harrison | a5abdea | 2008-04-29 01:03:40 -0700 | [diff] [blame] | 1128 | put_unaligned_le32(status, buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | break; |
| 1130 | case SetHubFeature: |
| 1131 | switch (wValue) { |
| 1132 | case C_HUB_LOCAL_POWER: |
| 1133 | case C_HUB_OVER_CURRENT: |
| 1134 | /* no hub-wide feature/status flags */ |
| 1135 | break; |
| 1136 | default: |
| 1137 | goto error; |
| 1138 | } |
| 1139 | break; |
| 1140 | case SetPortFeature: |
David Brownell | f0d7f27 | 2006-11-16 23:56:15 -0800 | [diff] [blame] | 1141 | selector = wIndex >> 8; |
| 1142 | wIndex &= 0xff; |
Jason Wessel | 8d053c7 | 2009-08-20 15:39:54 -0500 | [diff] [blame] | 1143 | if (unlikely(ehci->debug)) { |
| 1144 | /* If the debug port is active any port |
| 1145 | * feature requests should get denied */ |
| 1146 | if (wIndex == HCS_DEBUG_PORT(ehci->hcs_params) && |
| 1147 | (readl(&ehci->debug->control) & DBGP_ENABLED)) { |
| 1148 | retval = -ENODEV; |
| 1149 | goto error_exit; |
| 1150 | } |
| 1151 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | if (!wIndex || wIndex > ports) |
| 1153 | goto error; |
| 1154 | wIndex--; |
Alan Stern | e631656 | 2007-01-16 11:58:00 -0500 | [diff] [blame] | 1155 | temp = ehci_readl(ehci, status_reg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1156 | if (temp & PORT_OWNER) |
| 1157 | break; |
| 1158 | |
David Brownell | 10f6524 | 2005-08-31 10:55:38 -0700 | [diff] [blame] | 1159 | temp &= ~PORT_RWC_BITS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | switch (wValue) { |
| 1161 | case USB_PORT_FEAT_SUSPEND: |
David Brownell | f8aeb3b | 2006-01-20 13:55:14 -0800 | [diff] [blame] | 1162 | if (ehci->no_selective_suspend) |
| 1163 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | if ((temp & PORT_PE) == 0 |
| 1165 | || (temp & PORT_RESET) != 0) |
| 1166 | goto error; |
Alek Du | b9df7942 | 2010-01-19 16:31:31 +0800 | [diff] [blame] | 1167 | |
Alek Du | 331ac6b | 2009-07-13 12:41:20 +0800 | [diff] [blame] | 1168 | /* After above check the port must be connected. |
| 1169 | * Set appropriate bit thus could put phy into low power |
Tuomas Tynkkynen | 2cdcec4 | 2013-08-12 16:06:49 +0300 | [diff] [blame] | 1170 | * mode if we have tdi_phy_lpm feature |
Alek Du | 331ac6b | 2009-07-13 12:41:20 +0800 | [diff] [blame] | 1171 | */ |
Alek Du | b9df7942 | 2010-01-19 16:31:31 +0800 | [diff] [blame] | 1172 | temp &= ~PORT_WKCONN_E; |
| 1173 | temp |= PORT_WKDISC_E | PORT_WKOC_E; |
| 1174 | ehci_writel(ehci, temp | PORT_SUSPEND, status_reg); |
Tuomas Tynkkynen | 2cdcec4 | 2013-08-12 16:06:49 +0300 | [diff] [blame] | 1175 | if (ehci->has_tdi_phy_lpm) { |
Alek Du | b9df7942 | 2010-01-19 16:31:31 +0800 | [diff] [blame] | 1176 | spin_unlock_irqrestore(&ehci->lock, flags); |
Alek Du | 331ac6b | 2009-07-13 12:41:20 +0800 | [diff] [blame] | 1177 | msleep(5);/* 5ms for HCD enter low pwr mode */ |
Alek Du | b9df7942 | 2010-01-19 16:31:31 +0800 | [diff] [blame] | 1178 | spin_lock_irqsave(&ehci->lock, flags); |
Alek Du | 331ac6b | 2009-07-13 12:41:20 +0800 | [diff] [blame] | 1179 | temp1 = ehci_readl(ehci, hostpc_reg); |
| 1180 | ehci_writel(ehci, temp1 | HOSTPC_PHCD, |
| 1181 | hostpc_reg); |
| 1182 | temp1 = ehci_readl(ehci, hostpc_reg); |
| 1183 | ehci_dbg(ehci, "Port%d phy low pwr mode %s\n", |
| 1184 | wIndex, (temp1 & HOSTPC_PHCD) ? |
| 1185 | "succeeded" : "failed"); |
| 1186 | } |
Alan Stern | eafe5b9 | 2008-10-06 11:25:53 -0400 | [diff] [blame] | 1187 | set_bit(wIndex, &ehci->suspended_ports); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1188 | break; |
| 1189 | case USB_PORT_FEAT_POWER: |
| 1190 | if (HCS_PPC (ehci->hcs_params)) |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 1191 | ehci_writel(ehci, temp | PORT_POWER, |
Alan Stern | e631656 | 2007-01-16 11:58:00 -0500 | [diff] [blame] | 1192 | status_reg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1193 | break; |
| 1194 | case USB_PORT_FEAT_RESET: |
Alan Stern | 6753f4c | 2013-08-01 17:09:28 -0400 | [diff] [blame] | 1195 | if (temp & (PORT_SUSPEND|PORT_RESUME)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | goto error; |
| 1197 | /* line status bits may report this as low speed, |
| 1198 | * which can be fine if this root hub has a |
| 1199 | * transaction translator built in. |
| 1200 | */ |
| 1201 | if ((temp & (PORT_PE|PORT_CONNECT)) == PORT_CONNECT |
| 1202 | && !ehci_is_TDI(ehci) |
| 1203 | && PORT_USB11 (temp)) { |
| 1204 | ehci_dbg (ehci, |
| 1205 | "port %d low speed --> companion\n", |
| 1206 | wIndex + 1); |
| 1207 | temp |= PORT_OWNER; |
| 1208 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1209 | temp |= PORT_RESET; |
| 1210 | temp &= ~PORT_PE; |
| 1211 | |
| 1212 | /* |
| 1213 | * caller must wait, then call GetPortStatus |
| 1214 | * usb 2.0 spec says 50 ms resets on root |
| 1215 | */ |
| 1216 | ehci->reset_done [wIndex] = jiffies |
| 1217 | + msecs_to_jiffies (50); |
| 1218 | } |
Alan Stern | e631656 | 2007-01-16 11:58:00 -0500 | [diff] [blame] | 1219 | ehci_writel(ehci, temp, status_reg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1220 | break; |
David Brownell | f0d7f27 | 2006-11-16 23:56:15 -0800 | [diff] [blame] | 1221 | |
| 1222 | /* For downstream facing ports (these): one hub port is put |
| 1223 | * into test mode according to USB2 11.24.2.13, then the hub |
| 1224 | * must be reset (which for root hub now means rmmod+modprobe, |
| 1225 | * or else system reboot). See EHCI 2.3.9 and 4.14 for info |
| 1226 | * about the EHCI-specific stuff. |
| 1227 | */ |
| 1228 | case USB_PORT_FEAT_TEST: |
Jack Pham | 726a85c | 2013-08-13 13:40:13 -0700 | [diff] [blame] | 1229 | #ifdef CONFIG_USB_HCD_TEST_MODE |
Manu Gautam | 9841f37 | 2013-08-08 16:49:24 -0700 | [diff] [blame] | 1230 | if (selector == EHSET_TEST_SINGLE_STEP_SET_FEATURE) { |
| 1231 | spin_unlock_irqrestore(&ehci->lock, flags); |
| 1232 | retval = ehset_single_step_set_feature(hcd, |
| 1233 | wIndex); |
| 1234 | spin_lock_irqsave(&ehci->lock, flags); |
| 1235 | break; |
Jack Pham | 726a85c | 2013-08-13 13:40:13 -0700 | [diff] [blame] | 1236 | } |
| 1237 | #endif |
| 1238 | if (!selector || selector > 5) |
David Brownell | f0d7f27 | 2006-11-16 23:56:15 -0800 | [diff] [blame] | 1239 | goto error; |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 1240 | spin_unlock_irqrestore(&ehci->lock, flags); |
David Brownell | f0d7f27 | 2006-11-16 23:56:15 -0800 | [diff] [blame] | 1241 | ehci_quiesce(ehci); |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 1242 | spin_lock_irqsave(&ehci->lock, flags); |
Boris Todorov | 77636c8 | 2011-07-11 12:03:33 +0300 | [diff] [blame] | 1243 | |
| 1244 | /* Put all enabled ports into suspend */ |
| 1245 | while (ports--) { |
| 1246 | u32 __iomem *sreg = |
| 1247 | &ehci->regs->port_status[ports]; |
| 1248 | |
| 1249 | temp = ehci_readl(ehci, sreg) & ~PORT_RWC_BITS; |
| 1250 | if (temp & PORT_PE) |
| 1251 | ehci_writel(ehci, temp | PORT_SUSPEND, |
| 1252 | sreg); |
| 1253 | } |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 1254 | |
| 1255 | spin_unlock_irqrestore(&ehci->lock, flags); |
David Brownell | f0d7f27 | 2006-11-16 23:56:15 -0800 | [diff] [blame] | 1256 | ehci_halt(ehci); |
Alan Stern | c4f3476 | 2012-07-11 11:23:10 -0400 | [diff] [blame] | 1257 | spin_lock_irqsave(&ehci->lock, flags); |
| 1258 | |
Boris Todorov | 77636c8 | 2011-07-11 12:03:33 +0300 | [diff] [blame] | 1259 | temp = ehci_readl(ehci, status_reg); |
David Brownell | f0d7f27 | 2006-11-16 23:56:15 -0800 | [diff] [blame] | 1260 | temp |= selector << 16; |
Alan Stern | e631656 | 2007-01-16 11:58:00 -0500 | [diff] [blame] | 1261 | ehci_writel(ehci, temp, status_reg); |
David Brownell | f0d7f27 | 2006-11-16 23:56:15 -0800 | [diff] [blame] | 1262 | break; |
| 1263 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1264 | default: |
| 1265 | goto error; |
| 1266 | } |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 1267 | ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1268 | break; |
| 1269 | |
| 1270 | default: |
| 1271 | error: |
| 1272 | /* "stall" on error */ |
| 1273 | retval = -EPIPE; |
| 1274 | } |
Jason Wessel | 8d053c7 | 2009-08-20 15:39:54 -0500 | [diff] [blame] | 1275 | error_exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | spin_unlock_irqrestore (&ehci->lock, flags); |
| 1277 | return retval; |
| 1278 | } |
Laurent Pinchart | 3776993 | 2014-04-16 18:00:10 +0200 | [diff] [blame^] | 1279 | EXPORT_SYMBOL_GPL(ehci_hub_control); |
Balaji Rao | 90da096 | 2007-11-22 01:58:14 +0530 | [diff] [blame] | 1280 | |
Alan Stern | 3e02320 | 2012-11-01 11:12:58 -0400 | [diff] [blame] | 1281 | static void ehci_relinquish_port(struct usb_hcd *hcd, int portnum) |
Balaji Rao | 90da096 | 2007-11-22 01:58:14 +0530 | [diff] [blame] | 1282 | { |
| 1283 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 1284 | |
| 1285 | if (ehci_is_TDI(ehci)) |
| 1286 | return; |
| 1287 | set_owner(ehci, --portnum, PORT_OWNER); |
| 1288 | } |
| 1289 | |
Alan Stern | 3e02320 | 2012-11-01 11:12:58 -0400 | [diff] [blame] | 1290 | static int ehci_port_handed_over(struct usb_hcd *hcd, int portnum) |
Alan Stern | 3a31155 | 2008-05-20 16:58:29 -0400 | [diff] [blame] | 1291 | { |
| 1292 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 1293 | u32 __iomem *reg; |
| 1294 | |
| 1295 | if (ehci_is_TDI(ehci)) |
| 1296 | return 0; |
| 1297 | reg = &ehci->regs->port_status[portnum - 1]; |
| 1298 | return ehci_readl(ehci, reg) & PORT_OWNER; |
| 1299 | } |