Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 1 | /* |
| 2 | * EHCI HCD (Host Controller Driver) PCI Bus Glue. |
| 3 | * |
| 4 | * Copyright (c) 2000-2004 by David Brownell |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the |
| 8 | * Free Software Foundation; either version 2 of the License, or (at your |
| 9 | * option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, but |
| 12 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 13 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software Foundation, |
| 18 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 19 | */ |
| 20 | |
| 21 | #ifndef CONFIG_PCI |
| 22 | #error "This file is PCI bus glue. CONFIG_PCI must be defined." |
| 23 | #endif |
| 24 | |
| 25 | /*-------------------------------------------------------------------------*/ |
| 26 | |
David Brownell | 1880752 | 2005-11-23 15:45:37 -0800 | [diff] [blame] | 27 | /* called after powerup, by probe or system-pm "wakeup" */ |
| 28 | static int ehci_pci_reinit(struct ehci_hcd *ehci, struct pci_dev *pdev) |
| 29 | { |
| 30 | u32 temp; |
| 31 | int retval; |
David Brownell | 1880752 | 2005-11-23 15:45:37 -0800 | [diff] [blame] | 32 | |
| 33 | /* optional debug port, normally in the first BAR */ |
| 34 | temp = pci_find_capability(pdev, 0x0a); |
| 35 | if (temp) { |
| 36 | pci_read_config_dword(pdev, temp, &temp); |
| 37 | temp >>= 16; |
| 38 | if ((temp & (3 << 13)) == (1 << 13)) { |
| 39 | temp &= 0x1fff; |
| 40 | ehci->debug = ehci_to_hcd(ehci)->regs + temp; |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 41 | temp = ehci_readl(ehci, &ehci->debug->control); |
David Brownell | 1880752 | 2005-11-23 15:45:37 -0800 | [diff] [blame] | 42 | ehci_info(ehci, "debug port %d%s\n", |
| 43 | HCS_DEBUG_PORT(ehci->hcs_params), |
| 44 | (temp & DBGP_ENABLED) |
| 45 | ? " IN USE" |
| 46 | : ""); |
| 47 | if (!(temp & DBGP_ENABLED)) |
| 48 | ehci->debug = NULL; |
| 49 | } |
| 50 | } |
| 51 | |
David Brownell | 401feaf | 2006-01-24 07:15:30 -0800 | [diff] [blame] | 52 | /* we expect static quirk code to handle the "extended capabilities" |
| 53 | * (currently just BIOS handoff) allowed starting with EHCI 0.96 |
| 54 | */ |
David Brownell | 1880752 | 2005-11-23 15:45:37 -0800 | [diff] [blame] | 55 | |
| 56 | /* PCI Memory-Write-Invalidate cycle support is optional (uncommon) */ |
| 57 | retval = pci_set_mwi(pdev); |
| 58 | if (!retval) |
| 59 | ehci_dbg(ehci, "MWI active\n"); |
| 60 | |
David Brownell | 1880752 | 2005-11-23 15:45:37 -0800 | [diff] [blame] | 61 | return 0; |
| 62 | } |
| 63 | |
David Brownell | 8926bfa | 2005-11-28 08:40:38 -0800 | [diff] [blame] | 64 | /* called during probe() after chip reset completes */ |
| 65 | static int ehci_pci_setup(struct usb_hcd *hcd) |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 66 | { |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 67 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 68 | struct pci_dev *pdev = to_pci_dev(hcd->self.controller); |
Andiry Xu | b09bc6c | 2008-11-14 11:42:29 +0800 | [diff] [blame] | 69 | struct pci_dev *p_smbus; |
| 70 | u8 rev; |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 71 | u32 temp; |
David Brownell | 1880752 | 2005-11-23 15:45:37 -0800 | [diff] [blame] | 72 | int retval; |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 73 | |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 74 | switch (pdev->vendor) { |
| 75 | case PCI_VENDOR_ID_TOSHIBA_2: |
| 76 | /* celleb's companion chip */ |
| 77 | if (pdev->device == 0x01b5) { |
| 78 | #ifdef CONFIG_USB_EHCI_BIG_ENDIAN_MMIO |
| 79 | ehci->big_endian_mmio = 1; |
| 80 | #else |
| 81 | ehci_warn(ehci, |
| 82 | "unsupported big endian Toshiba quirk\n"); |
| 83 | #endif |
| 84 | } |
| 85 | break; |
| 86 | } |
| 87 | |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 88 | ehci->caps = hcd->regs; |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 89 | ehci->regs = hcd->regs + |
| 90 | HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase)); |
| 91 | |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 92 | dbg_hcs_params(ehci, "reset"); |
| 93 | dbg_hcc_params(ehci, "reset"); |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 94 | |
Paul Serice | c32ba30 | 2006-06-07 10:23:38 -0700 | [diff] [blame] | 95 | /* ehci_init() causes memory for DMA transfers to be |
| 96 | * allocated. Thus, any vendor-specific workarounds based on |
| 97 | * limiting the type of memory used for DMA transfers must |
| 98 | * happen before ehci_init() is called. */ |
| 99 | switch (pdev->vendor) { |
| 100 | case PCI_VENDOR_ID_NVIDIA: |
| 101 | /* NVidia reports that certain chips don't handle |
| 102 | * QH, ITD, or SITD addresses above 2GB. (But TD, |
| 103 | * data buffer, and periodic schedule are normal.) |
| 104 | */ |
| 105 | switch (pdev->device) { |
| 106 | case 0x003c: /* MCP04 */ |
| 107 | case 0x005b: /* CK804 */ |
| 108 | case 0x00d8: /* CK8 */ |
| 109 | case 0x00e8: /* CK8S */ |
| 110 | if (pci_set_consistent_dma_mask(pdev, |
Yang Hongyang | 929a22a | 2009-04-06 19:01:16 -0700 | [diff] [blame] | 111 | DMA_BIT_MASK(31)) < 0) |
Paul Serice | c32ba30 | 2006-06-07 10:23:38 -0700 | [diff] [blame] | 112 | ehci_warn(ehci, "can't enable NVidia " |
| 113 | "workaround for >2GB RAM\n"); |
| 114 | break; |
| 115 | } |
| 116 | break; |
| 117 | } |
| 118 | |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 119 | /* cache this readonly data; minimize chip reads */ |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 120 | ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 121 | |
David Brownell | 1880752 | 2005-11-23 15:45:37 -0800 | [diff] [blame] | 122 | retval = ehci_halt(ehci); |
| 123 | if (retval) |
| 124 | return retval; |
| 125 | |
David Brownell | 8926bfa | 2005-11-28 08:40:38 -0800 | [diff] [blame] | 126 | /* data structure init */ |
| 127 | retval = ehci_init(hcd); |
| 128 | if (retval) |
| 129 | return retval; |
| 130 | |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 131 | switch (pdev->vendor) { |
| 132 | case PCI_VENDOR_ID_TDI: |
| 133 | if (pdev->device == PCI_DEVICE_ID_TDI_EHCI) { |
Alan Stern | 7329e21 | 2008-04-03 18:02:56 -0400 | [diff] [blame] | 134 | hcd->has_tt = 1; |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 135 | tdi_reset(ehci); |
| 136 | } |
| 137 | break; |
| 138 | case PCI_VENDOR_ID_AMD: |
| 139 | /* AMD8111 EHCI doesn't work, according to AMD errata */ |
| 140 | if (pdev->device == 0x7463) { |
| 141 | ehci_info(ehci, "ignoring AMD8111 (errata)\n"); |
David Brownell | 8926bfa | 2005-11-28 08:40:38 -0800 | [diff] [blame] | 142 | retval = -EIO; |
| 143 | goto done; |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 144 | } |
| 145 | break; |
| 146 | case PCI_VENDOR_ID_NVIDIA: |
David Brownell | f8aeb3b | 2006-01-20 13:55:14 -0800 | [diff] [blame] | 147 | switch (pdev->device) { |
David Brownell | f8aeb3b | 2006-01-20 13:55:14 -0800 | [diff] [blame] | 148 | /* Some NForce2 chips have problems with selective suspend; |
| 149 | * fixed in newer silicon. |
| 150 | */ |
| 151 | case 0x0068: |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 152 | if (pdev->revision < 0xa4) |
David Brownell | f8aeb3b | 2006-01-20 13:55:14 -0800 | [diff] [blame] | 153 | ehci->no_selective_suspend = 1; |
| 154 | break; |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 155 | } |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 156 | break; |
Rene Herman | 055b93c | 2008-03-20 00:58:16 -0700 | [diff] [blame] | 157 | case PCI_VENDOR_ID_VIA: |
| 158 | if (pdev->device == 0x3104 && (pdev->revision & 0xf0) == 0x60) { |
| 159 | u8 tmp; |
| 160 | |
| 161 | /* The VT6212 defaults to a 1 usec EHCI sleep time which |
| 162 | * hogs the PCI bus *badly*. Setting bit 5 of 0x4B makes |
| 163 | * that sleep time use the conventional 10 usec. |
| 164 | */ |
| 165 | pci_read_config_byte(pdev, 0x4b, &tmp); |
| 166 | if (tmp & 0x20) |
| 167 | break; |
| 168 | pci_write_config_byte(pdev, 0x4b, tmp | 0x20); |
| 169 | } |
| 170 | break; |
Andiry Xu | b09bc6c | 2008-11-14 11:42:29 +0800 | [diff] [blame] | 171 | case PCI_VENDOR_ID_ATI: |
Shane Huang | 0a99e8a | 2008-11-25 15:12:33 +0800 | [diff] [blame] | 172 | /* SB600 and old version of SB700 have a bug in EHCI controller, |
Andiry Xu | b09bc6c | 2008-11-14 11:42:29 +0800 | [diff] [blame] | 173 | * which causes usb devices lose response in some cases. |
| 174 | */ |
Shane Huang | 0a99e8a | 2008-11-25 15:12:33 +0800 | [diff] [blame] | 175 | if ((pdev->device == 0x4386) || (pdev->device == 0x4396)) { |
Andiry Xu | b09bc6c | 2008-11-14 11:42:29 +0800 | [diff] [blame] | 176 | p_smbus = pci_get_device(PCI_VENDOR_ID_ATI, |
| 177 | PCI_DEVICE_ID_ATI_SBX00_SMBUS, |
| 178 | NULL); |
| 179 | if (!p_smbus) |
| 180 | break; |
| 181 | rev = p_smbus->revision; |
Shane Huang | 0a99e8a | 2008-11-25 15:12:33 +0800 | [diff] [blame] | 182 | if ((pdev->device == 0x4386) || (rev == 0x3a) |
| 183 | || (rev == 0x3b)) { |
Andiry Xu | b09bc6c | 2008-11-14 11:42:29 +0800 | [diff] [blame] | 184 | u8 tmp; |
Shane Huang | 0a99e8a | 2008-11-25 15:12:33 +0800 | [diff] [blame] | 185 | ehci_info(ehci, "applying AMD SB600/SB700 USB " |
| 186 | "freeze workaround\n"); |
Andiry Xu | b09bc6c | 2008-11-14 11:42:29 +0800 | [diff] [blame] | 187 | pci_read_config_byte(pdev, 0x53, &tmp); |
| 188 | pci_write_config_byte(pdev, 0x53, tmp | (1<<3)); |
| 189 | } |
| 190 | pci_dev_put(p_smbus); |
| 191 | } |
| 192 | break; |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 193 | } |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 194 | |
Marcelo Tosatti | af1c51f | 2007-08-20 18:13:27 -0700 | [diff] [blame] | 195 | ehci_reset(ehci); |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 196 | |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 197 | /* at least the Genesys GL880S needs fixup here */ |
| 198 | temp = HCS_N_CC(ehci->hcs_params) * HCS_N_PCC(ehci->hcs_params); |
| 199 | temp &= 0x0f; |
| 200 | if (temp && HCS_N_PORTS(ehci->hcs_params) > temp) { |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 201 | ehci_dbg(ehci, "bogus port configuration: " |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 202 | "cc=%d x pcc=%d < ports=%d\n", |
| 203 | HCS_N_CC(ehci->hcs_params), |
| 204 | HCS_N_PCC(ehci->hcs_params), |
| 205 | HCS_N_PORTS(ehci->hcs_params)); |
| 206 | |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 207 | switch (pdev->vendor) { |
| 208 | case 0x17a0: /* GENESYS */ |
| 209 | /* GL880S: should be PORTS=2 */ |
| 210 | temp |= (ehci->hcs_params & ~0xf); |
| 211 | ehci->hcs_params = temp; |
| 212 | break; |
| 213 | case PCI_VENDOR_ID_NVIDIA: |
| 214 | /* NF4: should be PCC=10 */ |
| 215 | break; |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 216 | } |
| 217 | } |
| 218 | |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 219 | /* Serial Bus Release Number is at PCI 0x60 offset */ |
| 220 | pci_read_config_byte(pdev, 0x60, &ehci->sbrn); |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 221 | |
Alan Stern | 6fd9086 | 2008-12-17 17:20:38 -0500 | [diff] [blame] | 222 | /* Keep this around for a while just in case some EHCI |
| 223 | * implementation uses legacy PCI PM support. This test |
| 224 | * can be removed on 17 Dec 2009 if the dev_warn() hasn't |
| 225 | * been triggered by then. |
David Brownell | 2c1c3c4 | 2005-11-07 15:24:46 -0800 | [diff] [blame] | 226 | */ |
| 227 | if (!device_can_wakeup(&pdev->dev)) { |
| 228 | u16 port_wake; |
| 229 | |
| 230 | pci_read_config_word(pdev, 0x62, &port_wake); |
Alan Stern | 6fd9086 | 2008-12-17 17:20:38 -0500 | [diff] [blame] | 231 | if (port_wake & 0x0001) { |
| 232 | dev_warn(&pdev->dev, "Enabling legacy PCI PM\n"); |
Alan Stern | bcca06e | 2009-01-13 11:35:54 -0500 | [diff] [blame] | 233 | device_set_wakeup_capable(&pdev->dev, 1); |
Alan Stern | 6fd9086 | 2008-12-17 17:20:38 -0500 | [diff] [blame] | 234 | } |
David Brownell | 2c1c3c4 | 2005-11-07 15:24:46 -0800 | [diff] [blame] | 235 | } |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 236 | |
David Brownell | f8aeb3b | 2006-01-20 13:55:14 -0800 | [diff] [blame] | 237 | #ifdef CONFIG_USB_SUSPEND |
| 238 | /* REVISIT: the controller works fine for wakeup iff the root hub |
| 239 | * itself is "globally" suspended, but usbcore currently doesn't |
| 240 | * understand such things. |
| 241 | * |
| 242 | * System suspend currently expects to be able to suspend the entire |
| 243 | * device tree, device-at-a-time. If we failed selective suspend |
| 244 | * reports, system suspend would fail; so the root hub code must claim |
| 245 | * success. That's lying to usbcore, and it matters for for runtime |
| 246 | * PM scenarios with selective suspend and remote wakeup... |
| 247 | */ |
| 248 | if (ehci->no_selective_suspend && device_can_wakeup(&pdev->dev)) |
| 249 | ehci_warn(ehci, "selective suspend/wakeup unavailable\n"); |
| 250 | #endif |
| 251 | |
Alan Stern | aff6d18 | 2008-04-18 11:11:26 -0400 | [diff] [blame] | 252 | ehci_port_power(ehci, 1); |
David Brownell | 1880752 | 2005-11-23 15:45:37 -0800 | [diff] [blame] | 253 | retval = ehci_pci_reinit(ehci, pdev); |
David Brownell | 8926bfa | 2005-11-28 08:40:38 -0800 | [diff] [blame] | 254 | done: |
| 255 | return retval; |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 256 | } |
| 257 | |
| 258 | /*-------------------------------------------------------------------------*/ |
| 259 | |
| 260 | #ifdef CONFIG_PM |
| 261 | |
| 262 | /* suspend/resume, section 4.3 */ |
| 263 | |
David Brownell | f03c17f | 2005-11-23 15:45:28 -0800 | [diff] [blame] | 264 | /* These routines rely on the PCI bus glue |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 265 | * to handle powerdown and wakeup, and currently also on |
| 266 | * transceivers that don't need any software attention to set up |
| 267 | * the right sort of wakeup. |
David Brownell | f03c17f | 2005-11-23 15:45:28 -0800 | [diff] [blame] | 268 | * Also they depend on separate root hub suspend/resume. |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 269 | */ |
| 270 | |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 271 | static int ehci_pci_suspend(struct usb_hcd *hcd, pm_message_t message) |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 272 | { |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 273 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
Benjamin Herrenschmidt | 8de9840 | 2005-11-25 09:59:46 +1100 | [diff] [blame] | 274 | unsigned long flags; |
| 275 | int rc = 0; |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 276 | |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 277 | if (time_before(jiffies, ehci->next_statechange)) |
| 278 | msleep(10); |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 279 | |
Benjamin Herrenschmidt | 8de9840 | 2005-11-25 09:59:46 +1100 | [diff] [blame] | 280 | /* Root hub was already suspended. Disable irq emission and |
| 281 | * mark HW unaccessible, bail out if RH has been resumed. Use |
| 282 | * the spinlock to properly synchronize with possible pending |
| 283 | * RH suspend or resume activity. |
| 284 | * |
| 285 | * This is still racy as hcd->state is manipulated outside of |
| 286 | * any locks =P But that will be a different fix. |
| 287 | */ |
| 288 | spin_lock_irqsave (&ehci->lock, flags); |
| 289 | if (hcd->state != HC_STATE_SUSPENDED) { |
| 290 | rc = -EINVAL; |
| 291 | goto bail; |
| 292 | } |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 293 | ehci_writel(ehci, 0, &ehci->regs->intr_enable); |
| 294 | (void)ehci_readl(ehci, &ehci->regs->intr_enable); |
Benjamin Herrenschmidt | 8de9840 | 2005-11-25 09:59:46 +1100 | [diff] [blame] | 295 | |
David Brownell | 1858499 | 2006-08-14 23:11:06 -0700 | [diff] [blame] | 296 | /* make sure snapshot being resumed re-enumerates everything */ |
| 297 | if (message.event == PM_EVENT_PRETHAW) { |
| 298 | ehci_halt(ehci); |
| 299 | ehci_reset(ehci); |
| 300 | } |
| 301 | |
Benjamin Herrenschmidt | 8de9840 | 2005-11-25 09:59:46 +1100 | [diff] [blame] | 302 | clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); |
| 303 | bail: |
| 304 | spin_unlock_irqrestore (&ehci->lock, flags); |
| 305 | |
David Brownell | f03c17f | 2005-11-23 15:45:28 -0800 | [diff] [blame] | 306 | // could save FLADJ in case of Vaux power loss |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 307 | // ... we'd only use it to handle clock skew |
| 308 | |
Benjamin Herrenschmidt | 8de9840 | 2005-11-25 09:59:46 +1100 | [diff] [blame] | 309 | return rc; |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 310 | } |
| 311 | |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 312 | static int ehci_pci_resume(struct usb_hcd *hcd) |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 313 | { |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 314 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
David Brownell | 1880752 | 2005-11-23 15:45:37 -0800 | [diff] [blame] | 315 | struct pci_dev *pdev = to_pci_dev(hcd->self.controller); |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 316 | |
David Brownell | f03c17f | 2005-11-23 15:45:28 -0800 | [diff] [blame] | 317 | // maybe restore FLADJ |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 318 | |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 319 | if (time_before(jiffies, ehci->next_statechange)) |
| 320 | msleep(100); |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 321 | |
Benjamin Herrenschmidt | 8de9840 | 2005-11-25 09:59:46 +1100 | [diff] [blame] | 322 | /* Mark hardware accessible again as we are out of D3 state by now */ |
| 323 | set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); |
| 324 | |
Alan Stern | 8c03356 | 2006-11-09 14:42:16 -0500 | [diff] [blame] | 325 | /* If CF is still set, we maintained PCI Vaux power. |
| 326 | * Just undo the effect of ehci_pci_suspend(). |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 327 | */ |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 328 | if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) { |
Alan Stern | 8c03356 | 2006-11-09 14:42:16 -0500 | [diff] [blame] | 329 | int mask = INTR_MASK; |
| 330 | |
Alan Stern | 58a97ff | 2008-04-14 12:17:10 -0400 | [diff] [blame] | 331 | if (!hcd->self.root_hub->do_remote_wakeup) |
Alan Stern | 8c03356 | 2006-11-09 14:42:16 -0500 | [diff] [blame] | 332 | mask &= ~STS_PCD; |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 333 | ehci_writel(ehci, mask, &ehci->regs->intr_enable); |
| 334 | ehci_readl(ehci, &ehci->regs->intr_enable); |
Alan Stern | 8c03356 | 2006-11-09 14:42:16 -0500 | [diff] [blame] | 335 | return 0; |
David Brownell | f03c17f | 2005-11-23 15:45:28 -0800 | [diff] [blame] | 336 | } |
| 337 | |
David Brownell | f03c17f | 2005-11-23 15:45:28 -0800 | [diff] [blame] | 338 | ehci_dbg(ehci, "lost power, restarting\n"); |
Alan Stern | 1c50c31 | 2005-11-14 11:45:38 -0500 | [diff] [blame] | 339 | usb_root_hub_lost_power(hcd->self.root_hub); |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 340 | |
| 341 | /* Else reset, to cope with power loss or flush-to-storage |
David Brownell | f03c17f | 2005-11-23 15:45:28 -0800 | [diff] [blame] | 342 | * style "resume" having let BIOS kick in during reboot. |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 343 | */ |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 344 | (void) ehci_halt(ehci); |
| 345 | (void) ehci_reset(ehci); |
David Brownell | 1880752 | 2005-11-23 15:45:37 -0800 | [diff] [blame] | 346 | (void) ehci_pci_reinit(ehci, pdev); |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 347 | |
David Brownell | f03c17f | 2005-11-23 15:45:28 -0800 | [diff] [blame] | 348 | /* emptying the schedule aborts any urbs */ |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 349 | spin_lock_irq(&ehci->lock); |
David Brownell | f03c17f | 2005-11-23 15:45:28 -0800 | [diff] [blame] | 350 | if (ehci->reclaim) |
Alan Stern | 07d29b6 | 2007-12-11 16:05:30 -0500 | [diff] [blame] | 351 | end_unlink_async(ehci); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 352 | ehci_work(ehci); |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 353 | spin_unlock_irq(&ehci->lock); |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 354 | |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 355 | ehci_writel(ehci, ehci->command, &ehci->regs->command); |
| 356 | ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag); |
| 357 | ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */ |
Alan Stern | 8c03356 | 2006-11-09 14:42:16 -0500 | [diff] [blame] | 358 | |
Alan Stern | 383975d | 2007-05-04 11:52:40 -0400 | [diff] [blame] | 359 | /* here we "know" root ports should always stay powered */ |
| 360 | ehci_port_power(ehci, 1); |
Alan Stern | 383975d | 2007-05-04 11:52:40 -0400 | [diff] [blame] | 361 | |
Alan Stern | 8c03356 | 2006-11-09 14:42:16 -0500 | [diff] [blame] | 362 | hcd->state = HC_STATE_SUSPENDED; |
| 363 | return 0; |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 364 | } |
| 365 | #endif |
| 366 | |
| 367 | static const struct hc_driver ehci_pci_hc_driver = { |
| 368 | .description = hcd_name, |
| 369 | .product_desc = "EHCI Host Controller", |
| 370 | .hcd_priv_size = sizeof(struct ehci_hcd), |
| 371 | |
| 372 | /* |
| 373 | * generic hardware linkage |
| 374 | */ |
| 375 | .irq = ehci_irq, |
| 376 | .flags = HCD_MEMORY | HCD_USB2, |
| 377 | |
| 378 | /* |
| 379 | * basic lifecycle operations |
| 380 | */ |
David Brownell | 8926bfa | 2005-11-28 08:40:38 -0800 | [diff] [blame] | 381 | .reset = ehci_pci_setup, |
David Brownell | 1880752 | 2005-11-23 15:45:37 -0800 | [diff] [blame] | 382 | .start = ehci_run, |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 383 | #ifdef CONFIG_PM |
Alan Stern | 7be7d74 | 2008-04-03 18:03:06 -0400 | [diff] [blame] | 384 | .pci_suspend = ehci_pci_suspend, |
| 385 | .pci_resume = ehci_pci_resume, |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 386 | #endif |
David Brownell | 1880752 | 2005-11-23 15:45:37 -0800 | [diff] [blame] | 387 | .stop = ehci_stop, |
Aleksey Gorelov | 64a21d0 | 2006-08-08 17:24:08 -0700 | [diff] [blame] | 388 | .shutdown = ehci_shutdown, |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 389 | |
| 390 | /* |
| 391 | * managing i/o requests and associated device resources |
| 392 | */ |
| 393 | .urb_enqueue = ehci_urb_enqueue, |
| 394 | .urb_dequeue = ehci_urb_dequeue, |
| 395 | .endpoint_disable = ehci_endpoint_disable, |
| 396 | |
| 397 | /* |
| 398 | * scheduling support |
| 399 | */ |
| 400 | .get_frame_number = ehci_get_frame, |
| 401 | |
| 402 | /* |
| 403 | * root hub support |
| 404 | */ |
| 405 | .hub_status_data = ehci_hub_status_data, |
| 406 | .hub_control = ehci_hub_control, |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 407 | .bus_suspend = ehci_bus_suspend, |
| 408 | .bus_resume = ehci_bus_resume, |
Alan Stern | a8e5177 | 2008-05-20 16:58:11 -0400 | [diff] [blame] | 409 | .relinquish_port = ehci_relinquish_port, |
Alan Stern | 3a31155 | 2008-05-20 16:58:29 -0400 | [diff] [blame] | 410 | .port_handed_over = ehci_port_handed_over, |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 411 | }; |
| 412 | |
| 413 | /*-------------------------------------------------------------------------*/ |
| 414 | |
| 415 | /* PCI driver selection metadata; PCI hotplugging uses this */ |
| 416 | static const struct pci_device_id pci_ids [] = { { |
| 417 | /* handle any USB 2.0 EHCI controller */ |
Jean Delvare | c67808e | 2006-04-09 20:07:35 +0200 | [diff] [blame] | 418 | PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_EHCI, ~0), |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 419 | .driver_data = (unsigned long) &ehci_pci_hc_driver, |
| 420 | }, |
| 421 | { /* end: all zeroes */ } |
| 422 | }; |
David Brownell | abcc94480 | 2005-11-23 15:45:32 -0800 | [diff] [blame] | 423 | MODULE_DEVICE_TABLE(pci, pci_ids); |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 424 | |
| 425 | /* pci driver glue; this is a "new style" PCI driver module */ |
| 426 | static struct pci_driver ehci_pci_driver = { |
| 427 | .name = (char *) hcd_name, |
| 428 | .id_table = pci_ids, |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 429 | |
| 430 | .probe = usb_hcd_pci_probe, |
| 431 | .remove = usb_hcd_pci_remove, |
| 432 | |
| 433 | #ifdef CONFIG_PM |
| 434 | .suspend = usb_hcd_pci_suspend, |
| 435 | .resume = usb_hcd_pci_resume, |
| 436 | #endif |
Aleksey Gorelov | 64a21d0 | 2006-08-08 17:24:08 -0700 | [diff] [blame] | 437 | .shutdown = usb_hcd_pci_shutdown, |
Matt Porter | 7ff71d6 | 2005-09-22 22:31:15 -0700 | [diff] [blame] | 438 | }; |