Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * OHCI HCD (Host Controller Driver) for USB. |
| 3 | * |
| 4 | * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> |
| 5 | * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net> |
David Brownell | dd9048a | 2006-12-05 03:18:31 -0800 | [diff] [blame] | 6 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * [ Initialisation is based on Linus' ] |
| 8 | * [ uhci code and gregs ohci fragments ] |
| 9 | * [ (C) Copyright 1999 Linus Torvalds ] |
| 10 | * [ (C) Copyright 1999 Gregory P. Smith] |
David Brownell | dd9048a | 2006-12-05 03:18:31 -0800 | [diff] [blame] | 11 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | * PCI Bus Glue |
| 13 | * |
| 14 | * This file is licenced under the GPL. |
| 15 | */ |
David Brownell | dd9048a | 2006-12-05 03:18:31 -0800 | [diff] [blame] | 16 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #ifndef CONFIG_PCI |
| 18 | #error "This file is PCI bus glue. CONFIG_PCI must be defined." |
| 19 | #endif |
| 20 | |
| 21 | /*-------------------------------------------------------------------------*/ |
| 22 | |
David Brownell | 931384f | 2007-04-17 13:06:29 -0700 | [diff] [blame] | 23 | static int broken_suspend(struct usb_hcd *hcd) |
| 24 | { |
| 25 | device_init_wakeup(&hcd->self.root_hub->dev, 0); |
| 26 | return 0; |
| 27 | } |
| 28 | |
Benjamin Herrenschmidt | 4302a59 | 2006-12-15 06:53:55 +1100 | [diff] [blame] | 29 | /* AMD 756, for most chips (early revs), corrupts register |
| 30 | * values on read ... so enable the vendor workaround. |
| 31 | */ |
David Brownell | 931384f | 2007-04-17 13:06:29 -0700 | [diff] [blame] | 32 | static int ohci_quirk_amd756(struct usb_hcd *hcd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | { |
| 34 | struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
| 35 | |
Benjamin Herrenschmidt | 4302a59 | 2006-12-15 06:53:55 +1100 | [diff] [blame] | 36 | ohci->flags = OHCI_QUIRK_AMD756; |
| 37 | ohci_dbg (ohci, "AMD756 erratum 4 workaround\n"); |
| 38 | |
| 39 | /* also erratum 10 (suspend/resume issues) */ |
David Brownell | 931384f | 2007-04-17 13:06:29 -0700 | [diff] [blame] | 40 | return broken_suspend(hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | } |
| 42 | |
Benjamin Herrenschmidt | 4302a59 | 2006-12-15 06:53:55 +1100 | [diff] [blame] | 43 | /* Apple's OHCI driver has a lot of bizarre workarounds |
| 44 | * for this chip. Evidently control and bulk lists |
| 45 | * can get confused. (B&W G3 models, and ...) |
| 46 | */ |
David Brownell | 931384f | 2007-04-17 13:06:29 -0700 | [diff] [blame] | 47 | static int ohci_quirk_opti(struct usb_hcd *hcd) |
Benjamin Herrenschmidt | 4302a59 | 2006-12-15 06:53:55 +1100 | [diff] [blame] | 48 | { |
| 49 | struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
| 50 | |
| 51 | ohci_dbg (ohci, "WARNING: OPTi workarounds unavailable\n"); |
| 52 | |
| 53 | return 0; |
| 54 | } |
| 55 | |
| 56 | /* Check for NSC87560. We have to look at the bridge (fn1) to |
| 57 | * identify the USB (fn2). This quirk might apply to more or |
| 58 | * even all NSC stuff. |
| 59 | */ |
David Brownell | 931384f | 2007-04-17 13:06:29 -0700 | [diff] [blame] | 60 | static int ohci_quirk_ns(struct usb_hcd *hcd) |
Benjamin Herrenschmidt | 4302a59 | 2006-12-15 06:53:55 +1100 | [diff] [blame] | 61 | { |
| 62 | struct pci_dev *pdev = to_pci_dev(hcd->self.controller); |
| 63 | struct pci_dev *b; |
| 64 | |
| 65 | b = pci_get_slot (pdev->bus, PCI_DEVFN (PCI_SLOT (pdev->devfn), 1)); |
| 66 | if (b && b->device == PCI_DEVICE_ID_NS_87560_LIO |
| 67 | && b->vendor == PCI_VENDOR_ID_NS) { |
| 68 | struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
| 69 | |
| 70 | ohci->flags |= OHCI_QUIRK_SUPERIO; |
| 71 | ohci_dbg (ohci, "Using NSC SuperIO setup\n"); |
| 72 | } |
| 73 | pci_dev_put(b); |
| 74 | |
| 75 | return 0; |
| 76 | } |
| 77 | |
| 78 | /* Check for Compaq's ZFMicro chipset, which needs short |
| 79 | * delays before control or bulk queues get re-activated |
| 80 | * in finish_unlinks() |
| 81 | */ |
David Brownell | 931384f | 2007-04-17 13:06:29 -0700 | [diff] [blame] | 82 | static int ohci_quirk_zfmicro(struct usb_hcd *hcd) |
Benjamin Herrenschmidt | 4302a59 | 2006-12-15 06:53:55 +1100 | [diff] [blame] | 83 | { |
| 84 | struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
| 85 | |
| 86 | ohci->flags |= OHCI_QUIRK_ZFMICRO; |
| 87 | ohci_dbg (ohci, "enabled Compaq ZFMicro chipset quirk\n"); |
| 88 | |
| 89 | return 0; |
| 90 | } |
| 91 | |
Benjamin Herrenschmidt | 11d1a4a | 2006-12-15 06:54:03 +1100 | [diff] [blame] | 92 | /* Check for Toshiba SCC OHCI which has big endian registers |
| 93 | * and little endian in memory data structures |
| 94 | */ |
David Brownell | 931384f | 2007-04-17 13:06:29 -0700 | [diff] [blame] | 95 | static int ohci_quirk_toshiba_scc(struct usb_hcd *hcd) |
Benjamin Herrenschmidt | 11d1a4a | 2006-12-15 06:54:03 +1100 | [diff] [blame] | 96 | { |
| 97 | struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
| 98 | |
| 99 | /* That chip is only present in the southbridge of some |
| 100 | * cell based platforms which are supposed to select |
| 101 | * CONFIG_USB_OHCI_BIG_ENDIAN_MMIO. We verify here if |
| 102 | * that was the case though. |
| 103 | */ |
| 104 | #ifdef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO |
| 105 | ohci->flags |= OHCI_QUIRK_BE_MMIO; |
| 106 | ohci_dbg (ohci, "enabled big endian Toshiba quirk\n"); |
| 107 | return 0; |
| 108 | #else |
| 109 | ohci_err (ohci, "unsupported big endian Toshiba quirk\n"); |
| 110 | return -ENXIO; |
| 111 | #endif |
| 112 | } |
Benjamin Herrenschmidt | 4302a59 | 2006-12-15 06:53:55 +1100 | [diff] [blame] | 113 | |
| 114 | /* List of quirks for OHCI */ |
| 115 | static const struct pci_device_id ohci_pci_quirks[] = { |
| 116 | { |
| 117 | PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x740c), |
| 118 | .driver_data = (unsigned long)ohci_quirk_amd756, |
| 119 | }, |
| 120 | { |
| 121 | PCI_DEVICE(PCI_VENDOR_ID_OPTI, 0xc861), |
| 122 | .driver_data = (unsigned long)ohci_quirk_opti, |
| 123 | }, |
| 124 | { |
| 125 | PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_ANY_ID), |
| 126 | .driver_data = (unsigned long)ohci_quirk_ns, |
| 127 | }, |
| 128 | { |
| 129 | PCI_DEVICE(PCI_VENDOR_ID_COMPAQ, 0xa0f8), |
| 130 | .driver_data = (unsigned long)ohci_quirk_zfmicro, |
| 131 | }, |
Benjamin Herrenschmidt | 11d1a4a | 2006-12-15 06:54:03 +1100 | [diff] [blame] | 132 | { |
| 133 | PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, 0x01b6), |
| 134 | .driver_data = (unsigned long)ohci_quirk_toshiba_scc, |
| 135 | }, |
David Brownell | 931384f | 2007-04-17 13:06:29 -0700 | [diff] [blame] | 136 | { |
| 137 | /* Toshiba portege 4000 */ |
| 138 | .vendor = PCI_VENDOR_ID_AL, |
| 139 | .device = 0x5237, |
| 140 | .subvendor = PCI_VENDOR_ID_TOSHIBA_2, |
| 141 | .subdevice = 0x0004, |
| 142 | .driver_data = (unsigned long) broken_suspend, |
| 143 | }, |
Benjamin Herrenschmidt | 4302a59 | 2006-12-15 06:53:55 +1100 | [diff] [blame] | 144 | /* FIXME for some of the early AMD 760 southbridges, OHCI |
| 145 | * won't work at all. blacklist them. |
| 146 | */ |
Benjamin Herrenschmidt | 11d1a4a | 2006-12-15 06:54:03 +1100 | [diff] [blame] | 147 | |
Benjamin Herrenschmidt | 4302a59 | 2006-12-15 06:53:55 +1100 | [diff] [blame] | 148 | {}, |
| 149 | }; |
| 150 | |
| 151 | static int ohci_pci_reset (struct usb_hcd *hcd) |
| 152 | { |
| 153 | struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
| 154 | int ret = 0; |
| 155 | |
| 156 | if (hcd->self.controller) { |
| 157 | struct pci_dev *pdev = to_pci_dev(hcd->self.controller); |
| 158 | const struct pci_device_id *quirk_id; |
| 159 | |
| 160 | quirk_id = pci_match_id(ohci_pci_quirks, pdev); |
| 161 | if (quirk_id != NULL) { |
| 162 | int (*quirk)(struct usb_hcd *ohci); |
| 163 | quirk = (void *)quirk_id->driver_data; |
| 164 | ret = quirk(hcd); |
| 165 | } |
| 166 | } |
| 167 | if (ret == 0) { |
| 168 | ohci_hcd_init (ohci); |
| 169 | return ohci_init (ohci); |
| 170 | } |
| 171 | return ret; |
| 172 | } |
| 173 | |
| 174 | |
| 175 | static int __devinit ohci_pci_start (struct usb_hcd *hcd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | { |
| 177 | struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
| 178 | int ret; |
| 179 | |
Benjamin Herrenschmidt | 4302a59 | 2006-12-15 06:53:55 +1100 | [diff] [blame] | 180 | #ifdef CONFIG_PM /* avoid warnings about unused pdev */ |
David Brownell | 6a9062f | 2006-01-23 15:28:07 -0800 | [diff] [blame] | 181 | if (hcd->self.controller) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | struct pci_dev *pdev = to_pci_dev(hcd->self.controller); |
| 183 | |
David Brownell | 6a9062f | 2006-01-23 15:28:07 -0800 | [diff] [blame] | 184 | /* RWC may not be set for add-in PCI cards, since boot |
| 185 | * firmware probably ignored them. This transfers PCI |
| 186 | * PM wakeup capabilities (once the PCI layer is fixed). |
| 187 | */ |
| 188 | if (device_may_wakeup(&pdev->dev)) |
| 189 | ohci->hc_control |= OHCI_CTRL_RWC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | } |
Benjamin Herrenschmidt | 4302a59 | 2006-12-15 06:53:55 +1100 | [diff] [blame] | 191 | #endif /* CONFIG_PM */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | |
Benjamin Herrenschmidt | 4302a59 | 2006-12-15 06:53:55 +1100 | [diff] [blame] | 193 | ret = ohci_run (ohci); |
| 194 | if (ret < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | ohci_err (ohci, "can't start\n"); |
| 196 | ohci_stop (hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | } |
Benjamin Herrenschmidt | 4302a59 | 2006-12-15 06:53:55 +1100 | [diff] [blame] | 198 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | } |
| 200 | |
| 201 | #ifdef CONFIG_PM |
| 202 | |
David Brownell | 9a5d3e9 | 2005-04-18 17:39:23 -0700 | [diff] [blame] | 203 | static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | { |
Benjamin Herrenschmidt | 8de9840 | 2005-11-25 09:59:46 +1100 | [diff] [blame] | 205 | struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
| 206 | unsigned long flags; |
| 207 | int rc = 0; |
| 208 | |
| 209 | /* Root hub was already suspended. Disable irq emission and |
| 210 | * mark HW unaccessible, bail out if RH has been resumed. Use |
| 211 | * the spinlock to properly synchronize with possible pending |
| 212 | * RH suspend or resume activity. |
| 213 | * |
| 214 | * This is still racy as hcd->state is manipulated outside of |
| 215 | * any locks =P But that will be a different fix. |
| 216 | */ |
| 217 | spin_lock_irqsave (&ohci->lock, flags); |
| 218 | if (hcd->state != HC_STATE_SUSPENDED) { |
| 219 | rc = -EINVAL; |
| 220 | goto bail; |
| 221 | } |
| 222 | ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable); |
| 223 | (void)ohci_readl(ohci, &ohci->regs->intrdisable); |
David Brownell | 1858499 | 2006-08-14 23:11:06 -0700 | [diff] [blame] | 224 | |
| 225 | /* make sure snapshot being resumed re-enumerates everything */ |
| 226 | if (message.event == PM_EVENT_PRETHAW) |
| 227 | ohci_usb_reset(ohci); |
| 228 | |
Benjamin Herrenschmidt | 8de9840 | 2005-11-25 09:59:46 +1100 | [diff] [blame] | 229 | clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); |
| 230 | bail: |
| 231 | spin_unlock_irqrestore (&ohci->lock, flags); |
| 232 | |
| 233 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | } |
| 235 | |
| 236 | |
| 237 | static int ohci_pci_resume (struct usb_hcd *hcd) |
| 238 | { |
Benjamin Herrenschmidt | 8de9840 | 2005-11-25 09:59:46 +1100 | [diff] [blame] | 239 | set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); |
David Brownell | f197b2c | 2005-09-22 22:42:53 -0700 | [diff] [blame] | 240 | usb_hcd_resume_root_hub(hcd); |
| 241 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | } |
| 243 | |
| 244 | #endif /* CONFIG_PM */ |
| 245 | |
| 246 | |
| 247 | /*-------------------------------------------------------------------------*/ |
| 248 | |
| 249 | static const struct hc_driver ohci_pci_hc_driver = { |
| 250 | .description = hcd_name, |
| 251 | .product_desc = "OHCI Host Controller", |
| 252 | .hcd_priv_size = sizeof(struct ohci_hcd), |
| 253 | |
| 254 | /* |
| 255 | * generic hardware linkage |
| 256 | */ |
| 257 | .irq = ohci_irq, |
| 258 | .flags = HCD_MEMORY | HCD_USB11, |
| 259 | |
| 260 | /* |
| 261 | * basic lifecycle operations |
| 262 | */ |
| 263 | .reset = ohci_pci_reset, |
| 264 | .start = ohci_pci_start, |
David Brownell | d413984 | 2006-08-04 11:31:55 -0700 | [diff] [blame] | 265 | .stop = ohci_stop, |
Aleksey Gorelov | 64a21d0 | 2006-08-08 17:24:08 -0700 | [diff] [blame] | 266 | .shutdown = ohci_shutdown, |
David Brownell | d413984 | 2006-08-04 11:31:55 -0700 | [diff] [blame] | 267 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | #ifdef CONFIG_PM |
David Brownell | d413984 | 2006-08-04 11:31:55 -0700 | [diff] [blame] | 269 | /* these suspend/resume entries are for upstream PCI glue ONLY */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | .suspend = ohci_pci_suspend, |
| 271 | .resume = ohci_pci_resume, |
| 272 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | |
| 274 | /* |
| 275 | * managing i/o requests and associated device resources |
| 276 | */ |
| 277 | .urb_enqueue = ohci_urb_enqueue, |
| 278 | .urb_dequeue = ohci_urb_dequeue, |
| 279 | .endpoint_disable = ohci_endpoint_disable, |
| 280 | |
| 281 | /* |
| 282 | * scheduling support |
| 283 | */ |
| 284 | .get_frame_number = ohci_get_frame, |
| 285 | |
| 286 | /* |
| 287 | * root hub support |
| 288 | */ |
| 289 | .hub_status_data = ohci_hub_status_data, |
| 290 | .hub_control = ohci_hub_control, |
David Brownell | d413984 | 2006-08-04 11:31:55 -0700 | [diff] [blame] | 291 | .hub_irq_enable = ohci_rhsc_enable, |
David Brownell | 8ad7fe1 | 2005-09-13 19:59:11 -0700 | [diff] [blame] | 292 | #ifdef CONFIG_PM |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 293 | .bus_suspend = ohci_bus_suspend, |
| 294 | .bus_resume = ohci_bus_resume, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | #endif |
| 296 | .start_port_reset = ohci_start_port_reset, |
| 297 | }; |
| 298 | |
| 299 | /*-------------------------------------------------------------------------*/ |
| 300 | |
| 301 | |
| 302 | static const struct pci_device_id pci_ids [] = { { |
| 303 | /* handle any USB OHCI controller */ |
Jean Delvare | c67808e | 2006-04-09 20:07:35 +0200 | [diff] [blame] | 304 | PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_OHCI, ~0), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | .driver_data = (unsigned long) &ohci_pci_hc_driver, |
| 306 | }, { /* end: all zeroes */ } |
| 307 | }; |
| 308 | MODULE_DEVICE_TABLE (pci, pci_ids); |
| 309 | |
| 310 | /* pci driver glue; this is a "new style" PCI driver module */ |
| 311 | static struct pci_driver ohci_pci_driver = { |
| 312 | .name = (char *) hcd_name, |
| 313 | .id_table = pci_ids, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | |
| 315 | .probe = usb_hcd_pci_probe, |
| 316 | .remove = usb_hcd_pci_remove, |
| 317 | |
| 318 | #ifdef CONFIG_PM |
| 319 | .suspend = usb_hcd_pci_suspend, |
| 320 | .resume = usb_hcd_pci_resume, |
| 321 | #endif |
Aleksey Gorelov | 64a21d0 | 2006-08-08 17:24:08 -0700 | [diff] [blame] | 322 | |
| 323 | .shutdown = usb_hcd_pci_shutdown, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | }; |
| 325 | |