Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 1 | /* |
| 2 | * xHCI host controller driver PCI Bus Glue. |
| 3 | * |
| 4 | * Copyright (C) 2008 Intel Corp. |
| 5 | * |
| 6 | * Author: Sarah Sharp |
| 7 | * Some code borrowed from the Linux EHCI driver. |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 as |
| 11 | * published by the Free Software Foundation. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, but |
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 15 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 16 | * for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software Foundation, |
| 20 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 21 | */ |
| 22 | |
| 23 | #include <linux/pci.h> |
Ben Hutchings | 7fc2a61 | 2011-04-25 16:54:28 +0100 | [diff] [blame] | 24 | #include <linux/slab.h> |
Paul Gortmaker | 6eb0de8 | 2011-07-03 16:09:31 -0400 | [diff] [blame] | 25 | #include <linux/module.h> |
Mathias Nyman | c3c5819 | 2015-07-21 17:20:25 +0300 | [diff] [blame] | 26 | #include <linux/acpi.h> |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 27 | |
| 28 | #include "xhci.h" |
Xenia Ragiadakou | 4bdfe4c | 2013-08-06 07:52:45 +0300 | [diff] [blame] | 29 | #include "xhci-trace.h" |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 30 | |
Lu Baolu | fa89537 | 2016-01-26 17:50:05 +0200 | [diff] [blame] | 31 | #define SSIC_PORT_NUM 2 |
| 32 | #define SSIC_PORT_CFG2 0x880c |
| 33 | #define SSIC_PORT_CFG2_OFFSET 0x30 |
Rajmohan Mani | abce329 | 2015-07-21 17:20:26 +0300 | [diff] [blame] | 34 | #define PROG_DONE (1 << 30) |
| 35 | #define SSIC_PORT_UNUSED (1 << 31) |
| 36 | |
Sarah Sharp | ac9d8fe | 2009-08-07 14:04:55 -0700 | [diff] [blame] | 37 | /* Device for a quirk */ |
| 38 | #define PCI_VENDOR_ID_FRESCO_LOGIC 0x1b73 |
| 39 | #define PCI_DEVICE_ID_FRESCO_LOGIC_PDK 0x1000 |
Sarah Sharp | bba18e3 | 2012-10-17 13:44:06 -0700 | [diff] [blame] | 40 | #define PCI_DEVICE_ID_FRESCO_LOGIC_FL1400 0x1400 |
Sarah Sharp | ac9d8fe | 2009-08-07 14:04:55 -0700 | [diff] [blame] | 41 | |
Maarten Lankhorst | c877b3b | 2011-06-15 23:47:21 +0200 | [diff] [blame] | 42 | #define PCI_VENDOR_ID_ETRON 0x1b6f |
Hans de Goede | 170625e | 2014-07-25 22:01:19 +0200 | [diff] [blame] | 43 | #define PCI_DEVICE_ID_EJ168 0x7023 |
Maarten Lankhorst | c877b3b | 2011-06-15 23:47:21 +0200 | [diff] [blame] | 44 | |
Takashi Iwai | 638298d | 2013-09-12 08:11:06 +0200 | [diff] [blame] | 45 | #define PCI_DEVICE_ID_INTEL_LYNXPOINT_XHCI 0x8c31 |
| 46 | #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31 |
Mathias Nyman | b8cb91e | 2015-03-06 17:23:19 +0200 | [diff] [blame] | 47 | #define PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI 0x22b5 |
| 48 | #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI 0xa12f |
| 49 | #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI 0x9d2f |
Lu Baolu | ccc04af | 2016-01-26 17:50:08 +0200 | [diff] [blame^] | 50 | #define PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI 0x0aa8 |
Takashi Iwai | 638298d | 2013-09-12 08:11:06 +0200 | [diff] [blame] | 51 | |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 52 | static const char hcd_name[] = "xhci_hcd"; |
| 53 | |
Andrew Bresticker | 1885d9a | 2014-10-03 11:35:26 +0300 | [diff] [blame] | 54 | static struct hc_driver __read_mostly xhci_pci_hc_driver; |
| 55 | |
Roger Quadros | cd33a32 | 2015-05-29 17:01:46 +0300 | [diff] [blame] | 56 | static int xhci_pci_setup(struct usb_hcd *hcd); |
| 57 | |
| 58 | static const struct xhci_driver_overrides xhci_pci_overrides __initconst = { |
Roger Quadros | cd33a32 | 2015-05-29 17:01:46 +0300 | [diff] [blame] | 59 | .reset = xhci_pci_setup, |
| 60 | }; |
| 61 | |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 62 | /* called after powerup, by probe or system-pm "wakeup" */ |
| 63 | static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) |
| 64 | { |
| 65 | /* |
| 66 | * TODO: Implement finding debug ports later. |
| 67 | * TODO: see if there are any quirks that need to be added to handle |
| 68 | * new extended capabilities. |
| 69 | */ |
| 70 | |
| 71 | /* PCI Memory-Write-Invalidate cycle support is optional (uncommon) */ |
| 72 | if (!pci_set_mwi(pdev)) |
| 73 | xhci_dbg(xhci, "MWI active\n"); |
| 74 | |
| 75 | xhci_dbg(xhci, "Finished xhci_pci_reinit\n"); |
| 76 | return 0; |
| 77 | } |
| 78 | |
Sebastian Andrzej Siewior | da3c9c4 | 2011-09-23 14:20:00 -0700 | [diff] [blame] | 79 | static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) |
| 80 | { |
| 81 | struct pci_dev *pdev = to_pci_dev(dev); |
| 82 | |
Sarah Sharp | ac9d8fe | 2009-08-07 14:04:55 -0700 | [diff] [blame] | 83 | /* Look for vendor-specific quirks */ |
| 84 | if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC && |
Sarah Sharp | bba18e3 | 2012-10-17 13:44:06 -0700 | [diff] [blame] | 85 | (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK || |
| 86 | pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_FL1400)) { |
| 87 | if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK && |
| 88 | pdev->revision == 0x0) { |
Sarah Sharp | ac9d8fe | 2009-08-07 14:04:55 -0700 | [diff] [blame] | 89 | xhci->quirks |= XHCI_RESET_EP_QUIRK; |
Xenia Ragiadakou | 4bdfe4c | 2013-08-06 07:52:45 +0300 | [diff] [blame] | 90 | xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, |
| 91 | "QUIRK: Fresco Logic xHC needs configure" |
| 92 | " endpoint cmd after reset endpoint"); |
Sarah Sharp | f5182b4 | 2011-06-02 11:33:02 -0700 | [diff] [blame] | 93 | } |
Oliver Neukum | 455f589 | 2013-09-30 15:50:54 +0200 | [diff] [blame] | 94 | if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK && |
| 95 | pdev->revision == 0x4) { |
| 96 | xhci->quirks |= XHCI_SLOW_SUSPEND; |
| 97 | xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, |
| 98 | "QUIRK: Fresco Logic xHC revision %u" |
| 99 | "must be suspended extra slowly", |
| 100 | pdev->revision); |
| 101 | } |
Hans de Goede | 7f5c4d6 | 2014-12-05 11:11:28 +0100 | [diff] [blame] | 102 | if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK) |
| 103 | xhci->quirks |= XHCI_BROKEN_STREAMS; |
Sarah Sharp | f5182b4 | 2011-06-02 11:33:02 -0700 | [diff] [blame] | 104 | /* Fresco Logic confirms: all revisions of this chip do not |
| 105 | * support MSI, even though some of them claim to in their PCI |
| 106 | * capabilities. |
| 107 | */ |
| 108 | xhci->quirks |= XHCI_BROKEN_MSI; |
Xenia Ragiadakou | 4bdfe4c | 2013-08-06 07:52:45 +0300 | [diff] [blame] | 109 | xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, |
| 110 | "QUIRK: Fresco Logic revision %u " |
| 111 | "has broken MSI implementation", |
Sarah Sharp | f5182b4 | 2011-06-02 11:33:02 -0700 | [diff] [blame] | 112 | pdev->revision); |
Sarah Sharp | 1530bbc6 | 2012-05-08 09:22:49 -0700 | [diff] [blame] | 113 | xhci->quirks |= XHCI_TRUST_TX_LENGTH; |
Sarah Sharp | ac9d8fe | 2009-08-07 14:04:55 -0700 | [diff] [blame] | 114 | } |
Sarah Sharp | f5182b4 | 2011-06-02 11:33:02 -0700 | [diff] [blame] | 115 | |
Sarah Sharp | 0238634 | 2010-05-24 13:25:28 -0700 | [diff] [blame] | 116 | if (pdev->vendor == PCI_VENDOR_ID_NEC) |
| 117 | xhci->quirks |= XHCI_NEC_HOST; |
Sarah Sharp | ac9d8fe | 2009-08-07 14:04:55 -0700 | [diff] [blame] | 118 | |
Andiry Xu | 7e393a8 | 2011-09-23 14:19:54 -0700 | [diff] [blame] | 119 | if (pdev->vendor == PCI_VENDOR_ID_AMD && xhci->hci_version == 0x96) |
| 120 | xhci->quirks |= XHCI_AMD_0x96_HOST; |
| 121 | |
Andiry Xu | c41136b | 2011-03-22 17:08:14 +0800 | [diff] [blame] | 122 | /* AMD PLL quirk */ |
| 123 | if (pdev->vendor == PCI_VENDOR_ID_AMD && usb_amd_find_chipset_info()) |
| 124 | xhci->quirks |= XHCI_AMD_PLL_FIX; |
Huang Rui | 2597fe9 | 2014-08-19 15:17:57 +0300 | [diff] [blame] | 125 | |
| 126 | if (pdev->vendor == PCI_VENDOR_ID_AMD) |
| 127 | xhci->quirks |= XHCI_TRUST_TX_LENGTH; |
| 128 | |
Sarah Sharp | e3567d2 | 2012-05-16 13:36:24 -0700 | [diff] [blame] | 129 | if (pdev->vendor == PCI_VENDOR_ID_INTEL) { |
| 130 | xhci->quirks |= XHCI_LPM_SUPPORT; |
| 131 | xhci->quirks |= XHCI_INTEL_HOST; |
Lu Baolu | 227a4fd | 2015-03-23 18:27:42 +0200 | [diff] [blame] | 132 | xhci->quirks |= XHCI_AVOID_BEI; |
Sarah Sharp | e3567d2 | 2012-05-16 13:36:24 -0700 | [diff] [blame] | 133 | } |
Sarah Sharp | ad80833 | 2011-05-25 10:43:56 -0700 | [diff] [blame] | 134 | if (pdev->vendor == PCI_VENDOR_ID_INTEL && |
| 135 | pdev->device == PCI_DEVICE_ID_INTEL_PANTHERPOINT_XHCI) { |
Sarah Sharp | 2cf95c1 | 2011-05-11 16:14:58 -0700 | [diff] [blame] | 136 | xhci->quirks |= XHCI_EP_LIMIT_QUIRK; |
| 137 | xhci->limit_active_eps = 64; |
Sarah Sharp | 86cc558 | 2011-09-02 11:05:54 -0700 | [diff] [blame] | 138 | xhci->quirks |= XHCI_SW_BW_CHECKING; |
Sarah Sharp | e95829f | 2012-07-23 18:59:30 +0300 | [diff] [blame] | 139 | /* |
| 140 | * PPT desktop boards DH77EB and DH77DF will power back on after |
| 141 | * a few seconds of being shutdown. The fix for this is to |
| 142 | * switch the ports from xHCI to EHCI on shutdown. We can't use |
| 143 | * DMI information to find those particular boards (since each |
| 144 | * vendor will change the board name), so we have to key off all |
| 145 | * PPT chipsets. |
| 146 | */ |
| 147 | xhci->quirks |= XHCI_SPURIOUS_REBOOT; |
Sarah Sharp | ad80833 | 2011-05-25 10:43:56 -0700 | [diff] [blame] | 148 | } |
Takashi Iwai | 638298d | 2013-09-12 08:11:06 +0200 | [diff] [blame] | 149 | if (pdev->vendor == PCI_VENDOR_ID_INTEL && |
Denis Turischev | 0a93999 | 2014-05-20 14:00:42 +0300 | [diff] [blame] | 150 | pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI) { |
Denis Turischev | c09ec25 | 2014-04-25 19:20:14 +0300 | [diff] [blame] | 151 | xhci->quirks |= XHCI_SPURIOUS_REBOOT; |
Laura Abbott | fd7cd06 | 2015-10-12 11:30:13 +0300 | [diff] [blame] | 152 | xhci->quirks |= XHCI_SPURIOUS_WAKEUP; |
Takashi Iwai | 638298d | 2013-09-12 08:11:06 +0200 | [diff] [blame] | 153 | } |
Mathias Nyman | b8cb91e | 2015-03-06 17:23:19 +0200 | [diff] [blame] | 154 | if (pdev->vendor == PCI_VENDOR_ID_INTEL && |
| 155 | (pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI || |
| 156 | pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI || |
Lu Baolu | ccc04af | 2016-01-26 17:50:08 +0200 | [diff] [blame^] | 157 | pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI || |
| 158 | pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI)) { |
Mathias Nyman | b8cb91e | 2015-03-06 17:23:19 +0200 | [diff] [blame] | 159 | xhci->quirks |= XHCI_PME_STUCK_QUIRK; |
| 160 | } |
Lu Baolu | 7e70cbf | 2016-01-26 17:50:06 +0200 | [diff] [blame] | 161 | if (pdev->vendor == PCI_VENDOR_ID_INTEL && |
| 162 | pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI) { |
| 163 | xhci->quirks |= XHCI_SSIC_PORT_UNUSED; |
| 164 | } |
Maarten Lankhorst | c877b3b | 2011-06-15 23:47:21 +0200 | [diff] [blame] | 165 | if (pdev->vendor == PCI_VENDOR_ID_ETRON && |
Hans de Goede | 170625e | 2014-07-25 22:01:19 +0200 | [diff] [blame] | 166 | pdev->device == PCI_DEVICE_ID_EJ168) { |
Maarten Lankhorst | c877b3b | 2011-06-15 23:47:21 +0200 | [diff] [blame] | 167 | xhci->quirks |= XHCI_RESET_ON_RESUME; |
Sarah Sharp | 5cb7df2 | 2012-07-02 13:36:23 -0700 | [diff] [blame] | 168 | xhci->quirks |= XHCI_TRUST_TX_LENGTH; |
Hans de Goede | 8f873c1 | 2014-07-25 22:01:18 +0200 | [diff] [blame] | 169 | xhci->quirks |= XHCI_BROKEN_STREAMS; |
Maarten Lankhorst | c877b3b | 2011-06-15 23:47:21 +0200 | [diff] [blame] | 170 | } |
Sarah Sharp | 1aa9578 | 2014-01-17 15:38:12 -0800 | [diff] [blame] | 171 | if (pdev->vendor == PCI_VENDOR_ID_RENESAS && |
Igor Gnatenko | 6db249e | 2014-04-25 19:20:15 +0300 | [diff] [blame] | 172 | pdev->device == 0x0015) |
Sarah Sharp | 1aa9578 | 2014-01-17 15:38:12 -0800 | [diff] [blame] | 173 | xhci->quirks |= XHCI_RESET_ON_RESUME; |
Elric Fu | 457a4f6 | 2012-03-29 15:47:50 +0800 | [diff] [blame] | 174 | if (pdev->vendor == PCI_VENDOR_ID_VIA) |
| 175 | xhci->quirks |= XHCI_RESET_ON_RESUME; |
Oliver Neukum | 85f4e45 | 2014-05-14 14:00:23 +0200 | [diff] [blame] | 176 | |
Hans de Goede | e21eba0 | 2014-08-25 12:21:56 +0200 | [diff] [blame] | 177 | /* See https://bugzilla.kernel.org/show_bug.cgi?id=79511 */ |
| 178 | if (pdev->vendor == PCI_VENDOR_ID_VIA && |
| 179 | pdev->device == 0x3432) |
| 180 | xhci->quirks |= XHCI_BROKEN_STREAMS; |
| 181 | |
Hans de Goede | 2391eac | 2014-10-28 11:05:29 +0100 | [diff] [blame] | 182 | if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA && |
| 183 | pdev->device == 0x1042) |
| 184 | xhci->quirks |= XHCI_BROKEN_STREAMS; |
| 185 | |
Oliver Neukum | 85f4e45 | 2014-05-14 14:00:23 +0200 | [diff] [blame] | 186 | if (xhci->quirks & XHCI_RESET_ON_RESUME) |
| 187 | xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, |
| 188 | "QUIRK: Resetting on resume"); |
Sebastian Andrzej Siewior | da3c9c4 | 2011-09-23 14:20:00 -0700 | [diff] [blame] | 189 | } |
Andiry Xu | c41136b | 2011-03-22 17:08:14 +0800 | [diff] [blame] | 190 | |
Mathias Nyman | c3c5819 | 2015-07-21 17:20:25 +0300 | [diff] [blame] | 191 | #ifdef CONFIG_ACPI |
| 192 | static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev) |
| 193 | { |
| 194 | static const u8 intel_dsm_uuid[] = { |
| 195 | 0xb7, 0x0c, 0x34, 0xac, 0x01, 0xe9, 0xbf, 0x45, |
| 196 | 0xb7, 0xe6, 0x2b, 0x34, 0xec, 0x93, 0x1e, 0x23, |
| 197 | }; |
Mika Westerberg | 84ed915 | 2015-12-04 15:53:42 +0200 | [diff] [blame] | 198 | union acpi_object *obj; |
| 199 | |
| 200 | obj = acpi_evaluate_dsm(ACPI_HANDLE(&dev->dev), intel_dsm_uuid, 3, 1, |
| 201 | NULL); |
| 202 | ACPI_FREE(obj); |
Mathias Nyman | c3c5819 | 2015-07-21 17:20:25 +0300 | [diff] [blame] | 203 | } |
| 204 | #else |
Mika Westerberg | 84ed915 | 2015-12-04 15:53:42 +0200 | [diff] [blame] | 205 | static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev) { } |
Mathias Nyman | c3c5819 | 2015-07-21 17:20:25 +0300 | [diff] [blame] | 206 | #endif /* CONFIG_ACPI */ |
| 207 | |
Sebastian Andrzej Siewior | da3c9c4 | 2011-09-23 14:20:00 -0700 | [diff] [blame] | 208 | /* called during probe() after chip reset completes */ |
| 209 | static int xhci_pci_setup(struct usb_hcd *hcd) |
| 210 | { |
| 211 | struct xhci_hcd *xhci; |
| 212 | struct pci_dev *pdev = to_pci_dev(hcd->self.controller); |
| 213 | int retval; |
| 214 | |
Mathias Nyman | b50107b | 2015-10-01 18:40:38 +0300 | [diff] [blame] | 215 | xhci = hcd_to_xhci(hcd); |
| 216 | if (!xhci->sbrn) |
| 217 | pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn); |
| 218 | |
Sebastian Andrzej Siewior | da3c9c4 | 2011-09-23 14:20:00 -0700 | [diff] [blame] | 219 | retval = xhci_gen_setup(hcd, xhci_pci_quirks); |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 220 | if (retval) |
Sebastian Andrzej Siewior | da3c9c4 | 2011-09-23 14:20:00 -0700 | [diff] [blame] | 221 | return retval; |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 222 | |
Sebastian Andrzej Siewior | da3c9c4 | 2011-09-23 14:20:00 -0700 | [diff] [blame] | 223 | if (!usb_hcd_is_primary_hcd(hcd)) |
| 224 | return 0; |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 225 | |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 226 | xhci_dbg(xhci, "Got SBRN %u\n", (unsigned int) xhci->sbrn); |
| 227 | |
| 228 | /* Find any debug ports */ |
Sarah Sharp | b02d0ed | 2010-10-26 11:03:44 -0700 | [diff] [blame] | 229 | retval = xhci_pci_reinit(xhci, pdev); |
| 230 | if (!retval) |
| 231 | return retval; |
| 232 | |
Sarah Sharp | b02d0ed | 2010-10-26 11:03:44 -0700 | [diff] [blame] | 233 | return retval; |
| 234 | } |
| 235 | |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 236 | /* |
| 237 | * We need to register our own PCI probe function (instead of the USB core's |
| 238 | * function) in order to create a second roothub under xHCI. |
| 239 | */ |
| 240 | static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) |
| 241 | { |
| 242 | int retval; |
| 243 | struct xhci_hcd *xhci; |
| 244 | struct hc_driver *driver; |
| 245 | struct usb_hcd *hcd; |
| 246 | |
| 247 | driver = (struct hc_driver *)id->driver_data; |
Mathias Nyman | bcffae7 | 2014-03-03 19:30:17 +0200 | [diff] [blame] | 248 | |
| 249 | /* Prevent runtime suspending between USB-2 and USB-3 initialization */ |
| 250 | pm_runtime_get_noresume(&dev->dev); |
| 251 | |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 252 | /* Register the USB 2.0 roothub. |
| 253 | * FIXME: USB core must know to register the USB 2.0 roothub first. |
| 254 | * This is sort of silly, because we could just set the HCD driver flags |
| 255 | * to say USB 2.0, but I'm not sure what the implications would be in |
| 256 | * the other parts of the HCD code. |
| 257 | */ |
| 258 | retval = usb_hcd_pci_probe(dev, id); |
| 259 | |
| 260 | if (retval) |
Mathias Nyman | bcffae7 | 2014-03-03 19:30:17 +0200 | [diff] [blame] | 261 | goto put_runtime_pm; |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 262 | |
| 263 | /* USB 2.0 roothub is stored in the PCI device now. */ |
| 264 | hcd = dev_get_drvdata(&dev->dev); |
| 265 | xhci = hcd_to_xhci(hcd); |
| 266 | xhci->shared_hcd = usb_create_shared_hcd(driver, &dev->dev, |
| 267 | pci_name(dev), hcd); |
| 268 | if (!xhci->shared_hcd) { |
| 269 | retval = -ENOMEM; |
| 270 | goto dealloc_usb2_hcd; |
| 271 | } |
| 272 | |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 273 | retval = usb_add_hcd(xhci->shared_hcd, dev->irq, |
Yong Zhang | b5dd18d | 2011-09-07 16:10:52 +0800 | [diff] [blame] | 274 | IRQF_SHARED); |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 275 | if (retval) |
| 276 | goto put_usb3_hcd; |
| 277 | /* Roothub already marked as USB 3.0 speed */ |
Sarah Sharp | 3b3db02 | 2012-05-09 10:55:03 -0700 | [diff] [blame] | 278 | |
Hans de Goede | 8f873c1 | 2014-07-25 22:01:18 +0200 | [diff] [blame] | 279 | if (!(xhci->quirks & XHCI_BROKEN_STREAMS) && |
| 280 | HCC_MAX_PSA(xhci->hcc_params) >= 4) |
Oliver Neukum | 14aec58 | 2014-02-11 20:36:04 +0100 | [diff] [blame] | 281 | xhci->shared_hcd->can_do_streams = 1; |
| 282 | |
Mathias Nyman | c3c5819 | 2015-07-21 17:20:25 +0300 | [diff] [blame] | 283 | if (xhci->quirks & XHCI_PME_STUCK_QUIRK) |
| 284 | xhci_pme_acpi_rtd3_enable(dev); |
| 285 | |
Mathias Nyman | bcffae7 | 2014-03-03 19:30:17 +0200 | [diff] [blame] | 286 | /* USB-2 and USB-3 roothubs initialized, allow runtime pm suspend */ |
| 287 | pm_runtime_put_noidle(&dev->dev); |
| 288 | |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 289 | return 0; |
| 290 | |
| 291 | put_usb3_hcd: |
| 292 | usb_put_hcd(xhci->shared_hcd); |
| 293 | dealloc_usb2_hcd: |
| 294 | usb_hcd_pci_remove(dev); |
Mathias Nyman | bcffae7 | 2014-03-03 19:30:17 +0200 | [diff] [blame] | 295 | put_runtime_pm: |
| 296 | pm_runtime_put_noidle(&dev->dev); |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 297 | return retval; |
| 298 | } |
| 299 | |
Sarah Sharp | b02d0ed | 2010-10-26 11:03:44 -0700 | [diff] [blame] | 300 | static void xhci_pci_remove(struct pci_dev *dev) |
| 301 | { |
| 302 | struct xhci_hcd *xhci; |
| 303 | |
| 304 | xhci = hcd_to_xhci(pci_get_drvdata(dev)); |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 305 | if (xhci->shared_hcd) { |
| 306 | usb_remove_hcd(xhci->shared_hcd); |
| 307 | usb_put_hcd(xhci->shared_hcd); |
| 308 | } |
Sarah Sharp | b02d0ed | 2010-10-26 11:03:44 -0700 | [diff] [blame] | 309 | usb_hcd_pci_remove(dev); |
Takashi Iwai | 638298d | 2013-09-12 08:11:06 +0200 | [diff] [blame] | 310 | |
| 311 | /* Workaround for spurious wakeups at shutdown with HSW */ |
| 312 | if (xhci->quirks & XHCI_SPURIOUS_WAKEUP) |
| 313 | pci_set_power_state(dev, PCI_D3hot); |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 314 | } |
| 315 | |
Andiry Xu | 5535b1d | 2010-10-14 07:23:06 -0700 | [diff] [blame] | 316 | #ifdef CONFIG_PM |
Tomer Barletz | 2b7627b | 2015-09-21 17:46:11 +0300 | [diff] [blame] | 317 | /* |
| 318 | * In some Intel xHCI controllers, in order to get D3 working, |
| 319 | * through a vendor specific SSIC CONFIG register at offset 0x883c, |
| 320 | * SSIC PORT need to be marked as "unused" before putting xHCI |
| 321 | * into D3. After D3 exit, the SSIC port need to be marked as "used". |
| 322 | * Without this change, xHCI might not enter D3 state. |
Tomer Barletz | 2b7627b | 2015-09-21 17:46:11 +0300 | [diff] [blame] | 323 | */ |
Lu Baolu | 7e70cbf | 2016-01-26 17:50:06 +0200 | [diff] [blame] | 324 | static void xhci_ssic_port_unused_quirk(struct usb_hcd *hcd, bool suspend) |
Tomer Barletz | 2b7627b | 2015-09-21 17:46:11 +0300 | [diff] [blame] | 325 | { |
| 326 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
Tomer Barletz | 2b7627b | 2015-09-21 17:46:11 +0300 | [diff] [blame] | 327 | u32 val; |
| 328 | void __iomem *reg; |
Lu Baolu | fa89537 | 2016-01-26 17:50:05 +0200 | [diff] [blame] | 329 | int i; |
Tomer Barletz | 2b7627b | 2015-09-21 17:46:11 +0300 | [diff] [blame] | 330 | |
Lu Baolu | 7e70cbf | 2016-01-26 17:50:06 +0200 | [diff] [blame] | 331 | for (i = 0; i < SSIC_PORT_NUM; i++) { |
| 332 | reg = (void __iomem *) xhci->cap_regs + |
| 333 | SSIC_PORT_CFG2 + |
| 334 | i * SSIC_PORT_CFG2_OFFSET; |
Tomer Barletz | 2b7627b | 2015-09-21 17:46:11 +0300 | [diff] [blame] | 335 | |
Lu Baolu | 7e70cbf | 2016-01-26 17:50:06 +0200 | [diff] [blame] | 336 | /* Notify SSIC that SSIC profile programming is not done. */ |
| 337 | val = readl(reg) & ~PROG_DONE; |
| 338 | writel(val, reg); |
Tomer Barletz | 2b7627b | 2015-09-21 17:46:11 +0300 | [diff] [blame] | 339 | |
Lu Baolu | 7e70cbf | 2016-01-26 17:50:06 +0200 | [diff] [blame] | 340 | /* Mark SSIC port as unused(suspend) or used(resume) */ |
| 341 | val = readl(reg); |
| 342 | if (suspend) |
| 343 | val |= SSIC_PORT_UNUSED; |
| 344 | else |
| 345 | val &= ~SSIC_PORT_UNUSED; |
| 346 | writel(val, reg); |
Tomer Barletz | 2b7627b | 2015-09-21 17:46:11 +0300 | [diff] [blame] | 347 | |
Lu Baolu | 7e70cbf | 2016-01-26 17:50:06 +0200 | [diff] [blame] | 348 | /* Notify SSIC that SSIC profile programming is done */ |
| 349 | val = readl(reg) | PROG_DONE; |
| 350 | writel(val, reg); |
| 351 | readl(reg); |
Tomer Barletz | 2b7627b | 2015-09-21 17:46:11 +0300 | [diff] [blame] | 352 | } |
Lu Baolu | 7e70cbf | 2016-01-26 17:50:06 +0200 | [diff] [blame] | 353 | } |
| 354 | |
| 355 | /* |
| 356 | * Make sure PME works on some Intel xHCI controllers by writing 1 to clear |
| 357 | * the Internal PME flag bit in vendor specific PMCTRL register at offset 0x80a4 |
| 358 | */ |
| 359 | static void xhci_pme_quirk(struct usb_hcd *hcd) |
| 360 | { |
| 361 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
| 362 | void __iomem *reg; |
| 363 | u32 val; |
Tomer Barletz | 2b7627b | 2015-09-21 17:46:11 +0300 | [diff] [blame] | 364 | |
| 365 | reg = (void __iomem *) xhci->cap_regs + 0x80a4; |
| 366 | val = readl(reg); |
| 367 | writel(val | BIT(28), reg); |
| 368 | readl(reg); |
| 369 | } |
| 370 | |
Andiry Xu | 5535b1d | 2010-10-14 07:23:06 -0700 | [diff] [blame] | 371 | static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup) |
| 372 | { |
| 373 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
Sarah Sharp | c3897aa | 2013-04-18 10:02:03 -0700 | [diff] [blame] | 374 | struct pci_dev *pdev = to_pci_dev(hcd->self.controller); |
Lu Baolu | 92149c9 | 2016-01-26 17:50:07 +0200 | [diff] [blame] | 375 | int ret; |
Sarah Sharp | c3897aa | 2013-04-18 10:02:03 -0700 | [diff] [blame] | 376 | |
| 377 | /* |
| 378 | * Systems with the TI redriver that loses port status change events |
| 379 | * need to have the registers polled during D3, so avoid D3cold. |
| 380 | */ |
Andrew Bresticker | e1cd972 | 2014-10-03 11:35:27 +0300 | [diff] [blame] | 381 | if (xhci->quirks & XHCI_COMP_MODE_QUIRK) |
Sarah Sharp | c3897aa | 2013-04-18 10:02:03 -0700 | [diff] [blame] | 382 | pdev->no_d3cold = true; |
Andiry Xu | 5535b1d | 2010-10-14 07:23:06 -0700 | [diff] [blame] | 383 | |
Mathias Nyman | b8cb91e | 2015-03-06 17:23:19 +0200 | [diff] [blame] | 384 | if (xhci->quirks & XHCI_PME_STUCK_QUIRK) |
Lu Baolu | 7e70cbf | 2016-01-26 17:50:06 +0200 | [diff] [blame] | 385 | xhci_pme_quirk(hcd); |
| 386 | |
| 387 | if (xhci->quirks & XHCI_SSIC_PORT_UNUSED) |
| 388 | xhci_ssic_port_unused_quirk(hcd, true); |
Mathias Nyman | b8cb91e | 2015-03-06 17:23:19 +0200 | [diff] [blame] | 389 | |
Lu Baolu | 92149c9 | 2016-01-26 17:50:07 +0200 | [diff] [blame] | 390 | ret = xhci_suspend(xhci, do_wakeup); |
| 391 | if (ret && (xhci->quirks & XHCI_SSIC_PORT_UNUSED)) |
| 392 | xhci_ssic_port_unused_quirk(hcd, false); |
| 393 | |
| 394 | return ret; |
Andiry Xu | 5535b1d | 2010-10-14 07:23:06 -0700 | [diff] [blame] | 395 | } |
| 396 | |
| 397 | static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated) |
| 398 | { |
| 399 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
Sarah Sharp | 69e848c | 2011-02-22 09:57:15 -0800 | [diff] [blame] | 400 | struct pci_dev *pdev = to_pci_dev(hcd->self.controller); |
Andiry Xu | 5535b1d | 2010-10-14 07:23:06 -0700 | [diff] [blame] | 401 | int retval = 0; |
| 402 | |
Sarah Sharp | 69e848c | 2011-02-22 09:57:15 -0800 | [diff] [blame] | 403 | /* The BIOS on systems with the Intel Panther Point chipset may or may |
| 404 | * not support xHCI natively. That means that during system resume, it |
| 405 | * may switch the ports back to EHCI so that users can use their |
| 406 | * keyboard to select a kernel from GRUB after resume from hibernate. |
| 407 | * |
| 408 | * The BIOS is supposed to remember whether the OS had xHCI ports |
| 409 | * enabled before resume, and switch the ports back to xHCI when the |
| 410 | * BIOS/OS semaphore is written, but we all know we can't trust BIOS |
| 411 | * writers. |
| 412 | * |
| 413 | * Unconditionally switch the ports back to xHCI after a system resume. |
Mathias Nyman | 26b7679 | 2013-07-23 11:35:47 +0300 | [diff] [blame] | 414 | * It should not matter whether the EHCI or xHCI controller is |
| 415 | * resumed first. It's enough to do the switchover in xHCI because |
| 416 | * USB core won't notice anything as the hub driver doesn't start |
| 417 | * running again until after all the devices (including both EHCI and |
| 418 | * xHCI host controllers) have been resumed. |
Sarah Sharp | 69e848c | 2011-02-22 09:57:15 -0800 | [diff] [blame] | 419 | */ |
Mathias Nyman | 26b7679 | 2013-07-23 11:35:47 +0300 | [diff] [blame] | 420 | |
| 421 | if (pdev->vendor == PCI_VENDOR_ID_INTEL) |
| 422 | usb_enable_intel_xhci_ports(pdev); |
Sarah Sharp | 69e848c | 2011-02-22 09:57:15 -0800 | [diff] [blame] | 423 | |
Lu Baolu | 7e70cbf | 2016-01-26 17:50:06 +0200 | [diff] [blame] | 424 | if (xhci->quirks & XHCI_SSIC_PORT_UNUSED) |
| 425 | xhci_ssic_port_unused_quirk(hcd, false); |
| 426 | |
Mathias Nyman | b8cb91e | 2015-03-06 17:23:19 +0200 | [diff] [blame] | 427 | if (xhci->quirks & XHCI_PME_STUCK_QUIRK) |
Lu Baolu | 7e70cbf | 2016-01-26 17:50:06 +0200 | [diff] [blame] | 428 | xhci_pme_quirk(hcd); |
Mathias Nyman | b8cb91e | 2015-03-06 17:23:19 +0200 | [diff] [blame] | 429 | |
Andiry Xu | 5535b1d | 2010-10-14 07:23:06 -0700 | [diff] [blame] | 430 | retval = xhci_resume(xhci, hibernated); |
| 431 | return retval; |
| 432 | } |
| 433 | #endif /* CONFIG_PM */ |
| 434 | |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 435 | /*-------------------------------------------------------------------------*/ |
| 436 | |
| 437 | /* PCI driver selection metadata; PCI hotplugging uses this */ |
| 438 | static const struct pci_device_id pci_ids[] = { { |
| 439 | /* handle any USB 3.0 xHCI controller */ |
| 440 | PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0), |
| 441 | .driver_data = (unsigned long) &xhci_pci_hc_driver, |
| 442 | }, |
| 443 | { /* end: all zeroes */ } |
| 444 | }; |
| 445 | MODULE_DEVICE_TABLE(pci, pci_ids); |
| 446 | |
| 447 | /* pci driver glue; this is a "new style" PCI driver module */ |
| 448 | static struct pci_driver xhci_pci_driver = { |
| 449 | .name = (char *) hcd_name, |
| 450 | .id_table = pci_ids, |
| 451 | |
Sarah Sharp | f6ff0ac | 2010-12-16 11:21:10 -0800 | [diff] [blame] | 452 | .probe = xhci_pci_probe, |
Sarah Sharp | b02d0ed | 2010-10-26 11:03:44 -0700 | [diff] [blame] | 453 | .remove = xhci_pci_remove, |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 454 | /* suspend and resume implemented later */ |
| 455 | |
| 456 | .shutdown = usb_hcd_pci_shutdown, |
Alan Stern | f875fdb | 2013-09-24 15:45:25 -0400 | [diff] [blame] | 457 | #ifdef CONFIG_PM |
Andiry Xu | 5535b1d | 2010-10-14 07:23:06 -0700 | [diff] [blame] | 458 | .driver = { |
| 459 | .pm = &usb_hcd_pci_pm_ops |
| 460 | }, |
| 461 | #endif |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 462 | }; |
| 463 | |
Andrew Bresticker | 29e409f | 2014-10-03 11:35:29 +0300 | [diff] [blame] | 464 | static int __init xhci_pci_init(void) |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 465 | { |
Roger Quadros | cd33a32 | 2015-05-29 17:01:46 +0300 | [diff] [blame] | 466 | xhci_init_driver(&xhci_pci_hc_driver, &xhci_pci_overrides); |
Andrew Bresticker | 1885d9a | 2014-10-03 11:35:26 +0300 | [diff] [blame] | 467 | #ifdef CONFIG_PM |
| 468 | xhci_pci_hc_driver.pci_suspend = xhci_pci_suspend; |
| 469 | xhci_pci_hc_driver.pci_resume = xhci_pci_resume; |
| 470 | #endif |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 471 | return pci_register_driver(&xhci_pci_driver); |
| 472 | } |
Andrew Bresticker | 29e409f | 2014-10-03 11:35:29 +0300 | [diff] [blame] | 473 | module_init(xhci_pci_init); |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 474 | |
Andrew Bresticker | 29e409f | 2014-10-03 11:35:29 +0300 | [diff] [blame] | 475 | static void __exit xhci_pci_exit(void) |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 476 | { |
| 477 | pci_unregister_driver(&xhci_pci_driver); |
| 478 | } |
Andrew Bresticker | 29e409f | 2014-10-03 11:35:29 +0300 | [diff] [blame] | 479 | module_exit(xhci_pci_exit); |
| 480 | |
| 481 | MODULE_DESCRIPTION("xHCI PCI Host Controller Driver"); |
| 482 | MODULE_LICENSE("GPL"); |