Release 4.16 drivers/usb/host/xhci-pci.c

// SPDX-License-Identifier: GPL-2.0
/*
 * xHCI host controller driver PCI Bus Glue.
 *
 * Copyright (C) 2008 Intel Corp.
 *
 * Author: Sarah Sharp
 * Some code borrowed from the Linux EHCI driver.
 */

#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/acpi.h>

#include "xhci.h"
#include "xhci-trace.h"


#define SSIC_PORT_NUM		2

#define SSIC_PORT_CFG2		0x880c

#define SSIC_PORT_CFG2_OFFSET	0x30

#define PROG_DONE		(1 << 30)

#define SSIC_PORT_UNUSED	(1 << 31)

/* Device for a quirk */

#define PCI_VENDOR_ID_FRESCO_LOGIC	0x1b73

#define PCI_DEVICE_ID_FRESCO_LOGIC_PDK	0x1000

#define PCI_DEVICE_ID_FRESCO_LOGIC_FL1009	0x1009

#define PCI_DEVICE_ID_FRESCO_LOGIC_FL1400	0x1400


#define PCI_VENDOR_ID_ETRON		0x1b6f

#define PCI_DEVICE_ID_EJ168		0x7023


#define PCI_DEVICE_ID_INTEL_LYNXPOINT_XHCI	0x8c31

#define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI	0x9c31

#define PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_XHCI	0x9cb1

#define PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI		0x22b5

#define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI		0xa12f

#define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI	0x9d2f

#define PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI		0x0aa8

#define PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI		0x1aa8

#define PCI_DEVICE_ID_INTEL_APL_XHCI			0x5aa8

#define PCI_DEVICE_ID_INTEL_DNV_XHCI			0x19d0


#define PCI_DEVICE_ID_AMD_PROMONTORYA_4			0x43b9

#define PCI_DEVICE_ID_AMD_PROMONTORYA_3			0x43ba

#define PCI_DEVICE_ID_AMD_PROMONTORYA_2			0x43bb

#define PCI_DEVICE_ID_AMD_PROMONTORYA_1			0x43bc

#define PCI_DEVICE_ID_ASMEDIA_1042A_XHCI		0x1142


static const char hcd_name[] = "xhci_hcd";


static struct hc_driver __read_mostly xhci_pci_hc_driver;

static int xhci_pci_setup(struct usb_hcd *hcd);


static const struct xhci_driver_overrides xhci_pci_overrides __initconst = {
	.reset = xhci_pci_setup,
};

/* called after powerup, by probe or system-pm "wakeup" */


static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev)
{
	/*
         * TODO: Implement finding debug ports later.
         * TODO: see if there are any quirks that need to be added to handle
         * new extended capabilities.
         */

	/* PCI Memory-Write-Invalidate cycle support is optional (uncommon) */
	if (!pci_set_mwi(pdev))
		xhci_dbg(xhci, "MWI active\n");

	xhci_dbg(xhci, "Finished xhci_pci_reinit\n");
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Sarah Sharp
43
100.00%
1
100.00%
Total
43
100.00%
1
100.00%



static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
{
	struct pci_dev		*pdev = to_pci_dev(dev);

	/* Look for vendor-specific quirks */
	if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC &&
			(pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK ||
			 pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_FL1400)) {
		if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK &&
				pdev->revision == 0x0) {
			xhci->quirks |= XHCI_RESET_EP_QUIRK;
			xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
				"QUIRK: Fresco Logic xHC needs configure"
				" endpoint cmd after reset endpoint");
		}
		if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK &&
				pdev->revision == 0x4) {
			xhci->quirks |= XHCI_SLOW_SUSPEND;
			xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
				"QUIRK: Fresco Logic xHC revision %u"
				"must be suspended extra slowly",
				pdev->revision);
		}
		if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK)
			xhci->quirks |= XHCI_BROKEN_STREAMS;
		/* Fresco Logic confirms: all revisions of this chip do not
                 * support MSI, even though some of them claim to in their PCI
                 * capabilities.
                 */
		xhci->quirks |= XHCI_BROKEN_MSI;
		xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
				"QUIRK: Fresco Logic revision %u "
				"has broken MSI implementation",
				pdev->revision);
		xhci->quirks |= XHCI_TRUST_TX_LENGTH;
	}

	if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC &&
			pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_FL1009)
		xhci->quirks |= XHCI_BROKEN_STREAMS;

	if (pdev->vendor == PCI_VENDOR_ID_NEC)
		xhci->quirks |= XHCI_NEC_HOST;

	if (pdev->vendor == PCI_VENDOR_ID_AMD && xhci->hci_version == 0x96)
		xhci->quirks |= XHCI_AMD_0x96_HOST;

	/* AMD PLL quirk */
	if (pdev->vendor == PCI_VENDOR_ID_AMD && usb_amd_find_chipset_info())
		xhci->quirks |= XHCI_AMD_PLL_FIX;

	if (pdev->vendor == PCI_VENDOR_ID_AMD && pdev->device == 0x43bb)
		xhci->quirks |= XHCI_SUSPEND_DELAY;

	if (pdev->vendor == PCI_VENDOR_ID_AMD)
		xhci->quirks |= XHCI_TRUST_TX_LENGTH;

	if ((pdev->vendor == PCI_VENDOR_ID_AMD) &&
		((pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_4) ||
		(pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_3) ||
		(pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_2) ||
		(pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_1)))
		xhci->quirks |= XHCI_U2_DISABLE_WAKE;

	if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
		xhci->quirks |= XHCI_LPM_SUPPORT;
		xhci->quirks |= XHCI_INTEL_HOST;
		xhci->quirks |= XHCI_AVOID_BEI;
	}
	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
			pdev->device == PCI_DEVICE_ID_INTEL_PANTHERPOINT_XHCI) {
		xhci->quirks |= XHCI_EP_LIMIT_QUIRK;
		xhci->limit_active_eps = 64;
		xhci->quirks |= XHCI_SW_BW_CHECKING;
		/*
                 * PPT desktop boards DH77EB and DH77DF will power back on after
                 * a few seconds of being shutdown.  The fix for this is to
                 * switch the ports from xHCI to EHCI on shutdown.  We can't use
                 * DMI information to find those particular boards (since each
                 * vendor will change the board name), so we have to key off all
                 * PPT chipsets.
                 */
		xhci->quirks |= XHCI_SPURIOUS_REBOOT;
	}
	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
		(pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI ||
		 pdev->device == PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_XHCI)) {
		xhci->quirks |= XHCI_SPURIOUS_REBOOT;
		xhci->quirks |= XHCI_SPURIOUS_WAKEUP;
	}
	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
		(pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI ||
		 pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI ||
		 pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
		 pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI ||
		 pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI ||
		 pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI ||
		 pdev->device == PCI_DEVICE_ID_INTEL_DNV_XHCI)) {
		xhci->quirks |= XHCI_PME_STUCK_QUIRK;
	}
	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
		 pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI) {
		xhci->quirks |= XHCI_SSIC_PORT_UNUSED;
	}
	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
	    (pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
	     pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI ||
	     pdev->device == PCI_DEVICE_ID_INTEL_DNV_XHCI))
		xhci->quirks |= XHCI_MISSING_CAS;

	if (pdev->vendor == PCI_VENDOR_ID_ETRON &&
			pdev->device == PCI_DEVICE_ID_EJ168) {
		xhci->quirks |= XHCI_RESET_ON_RESUME;
		xhci->quirks |= XHCI_TRUST_TX_LENGTH;
		xhci->quirks |= XHCI_BROKEN_STREAMS;
	}
	if (pdev->vendor == PCI_VENDOR_ID_RENESAS &&
			pdev->device == 0x0014)
		xhci->quirks |= XHCI_TRUST_TX_LENGTH;
	if (pdev->vendor == PCI_VENDOR_ID_RENESAS &&
			pdev->device == 0x0015)
		xhci->quirks |= XHCI_RESET_ON_RESUME;
	if (pdev->vendor == PCI_VENDOR_ID_VIA)
		xhci->quirks |= XHCI_RESET_ON_RESUME;

	/* See https://bugzilla.kernel.org/show_bug.cgi?id=79511 */
	if (pdev->vendor == PCI_VENDOR_ID_VIA &&
			pdev->device == 0x3432)
		xhci->quirks |= XHCI_BROKEN_STREAMS;

	if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
			pdev->device == 0x1042)
		xhci->quirks |= XHCI_BROKEN_STREAMS;
	if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
			pdev->device == 0x1142)
		xhci->quirks |= XHCI_TRUST_TX_LENGTH;

	if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
		pdev->device == PCI_DEVICE_ID_ASMEDIA_1042A_XHCI)
		xhci->quirks |= XHCI_ASMEDIA_MODIFY_FLOWCONTROL;

	if (pdev->vendor == PCI_VENDOR_ID_TI && pdev->device == 0x8241)
		xhci->quirks |= XHCI_LIMIT_ENDPOINT_INTERVAL_7;

	if (xhci->quirks & XHCI_RESET_ON_RESUME)
		xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
				"QUIRK: Resetting on resume");
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Sarah Sharp
183
24.63%
12
26.09%
Mathias Nyman
84
11.31%
4
8.70%
Hans de Goede
82
11.04%
6
13.04%
Oliver Neukum
53
7.13%
2
4.35%
Joe Lee
50
6.73%
1
2.17%
Andiry Brienza
38
5.11%
2
4.35%
Lu Baolu
34
4.58%
3
6.52%
Sebastian Andrzej Siewior
26
3.50%
1
2.17%
Maarten Lankhorst
21
2.83%
1
2.17%
Jiahau Chang
20
2.69%
1
2.17%
Roger Quadros
20
2.69%
1
2.17%
Kai-Heng Feng
20
2.69%
1
2.17%
Corentin Labbe
20
2.69%
1
2.17%
Daniel R Thompson
16
2.15%
1
2.17%
Elric Fu
14
1.88%
1
2.17%
Huang Rui
14
1.88%
1
2.17%
Denis Turischev
13
1.75%
2
4.35%
Takashi Iwai
9
1.21%
1
2.17%
Xenia Ragiadakou
8
1.08%
1
2.17%
Laura Abbott
6
0.81%
1
2.17%
Wan Ahmad Zainie
6
0.81%
1
2.17%
Rafal Redzimski
6
0.81%
1
2.17%
Total
743
100.00%
46
100.00%

#ifdef CONFIG_ACPI


static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev)
{
	static const guid_t intel_dsm_guid =
		GUID_INIT(0xac340cb7, 0xe901, 0x45bf,
			  0xb7, 0xe6, 0x2b, 0x34, 0xec, 0x93, 0x1e, 0x23);
	union acpi_object *obj;

	obj = acpi_evaluate_dsm(ACPI_HANDLE(&dev->dev), &intel_dsm_guid, 3, 1,
				NULL);
	ACPI_FREE(obj);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Mathias Nyman
41
56.16%
1
33.33%
Andy Shevchenko
20
27.40%
1
33.33%
Mika Westerberg
12
16.44%
1
33.33%
Total
73
100.00%
3
100.00%

#else


static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev) { }
Contributors
Person
Tokens
Prop
Commits
CommitProp
Mathias Nyman
10
100.00%
1
100.00%
Total
10
100.00%
1
100.00%

#endif /* CONFIG_ACPI */

/* called during probe() after chip reset completes */


static int xhci_pci_setup(struct usb_hcd *hcd)
{
	struct xhci_hcd		*xhci;
	struct pci_dev		*pdev = to_pci_dev(hcd->self.controller);
	int			retval;

	xhci = hcd_to_xhci(hcd);
	if (!xhci->sbrn)
		pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn);

	/* imod_interval is the interrupt moderation value in nanoseconds. */
	xhci->imod_interval = 40000;

	retval = xhci_gen_setup(hcd, xhci_pci_quirks);
	if (retval)
		return retval;

	if (!usb_hcd_is_primary_hcd(hcd))
		return 0;

	xhci_dbg(xhci, "Got SBRN %u\n", (unsigned int) xhci->sbrn);

	/* Find any debug ports */
	return xhci_pci_reinit(xhci, pdev);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Sarah Sharp
43
36.75%
3
42.86%
Sebastian Andrzej Siewior
40
34.19%
1
14.29%
Mathias Nyman
26
22.22%
1
14.29%
Adam Wallis
7
5.98%
1
14.29%
Lu Baolu
1
0.85%
1
14.29%
Total
117
100.00%
7
100.00%

/*
 * We need to register our own PCI probe function (instead of the USB core's
 * function) in order to create a second roothub under xHCI.
 */


static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
	int retval;
	struct xhci_hcd *xhci;
	struct hc_driver *driver;
	struct usb_hcd *hcd;

	driver = (struct hc_driver *)id->driver_data;

	/* For some HW implementation, a XHCI reset is just not enough... */
	if (usb_xhci_needs_pci_reset(dev)) {
		dev_info(&dev->dev, "Resetting\n");
		if (pci_reset_function_locked(dev))
			dev_warn(&dev->dev, "Reset failed");
	}

	/* Prevent runtime suspending between USB-2 and USB-3 initialization */
	pm_runtime_get_noresume(&dev->dev);

	/* Register the USB 2.0 roothub.
         * FIXME: USB core must know to register the USB 2.0 roothub first.
         * This is sort of silly, because we could just set the HCD driver flags
         * to say USB 2.0, but I'm not sure what the implications would be in
         * the other parts of the HCD code.
         */
	retval = usb_hcd_pci_probe(dev, id);

	if (retval)
		goto put_runtime_pm;

	/* USB 2.0 roothub is stored in the PCI device now. */
	hcd = dev_get_drvdata(&dev->dev);
	xhci = hcd_to_xhci(hcd);
	xhci->shared_hcd = usb_create_shared_hcd(driver, &dev->dev,
				pci_name(dev), hcd);
	if (!xhci->shared_hcd) {
		retval = -ENOMEM;
		goto dealloc_usb2_hcd;
	}

	retval = usb_add_hcd(xhci->shared_hcd, dev->irq,
			IRQF_SHARED);
	if (retval)
		goto put_usb3_hcd;
	/* Roothub already marked as USB 3.0 speed */

	if (!(xhci->quirks & XHCI_BROKEN_STREAMS) &&
			HCC_MAX_PSA(xhci->hcc_params) >= 4)
		xhci->shared_hcd->can_do_streams = 1;

	if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
		xhci_pme_acpi_rtd3_enable(dev);

	/* USB-2 and USB-3 roothubs initialized, allow runtime pm suspend */
	pm_runtime_put_noidle(&dev->dev);

	return 0;

put_usb3_hcd:
	usb_put_hcd(xhci->shared_hcd);
dealloc_usb2_hcd:
	usb_hcd_pci_remove(dev);
put_runtime_pm:
	pm_runtime_put_noidle(&dev->dev);
	return retval;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Sarah Sharp
161
59.63%
1
16.67%
Mathias Nyman
44
16.30%
2
33.33%
Marc Zyngier
37
13.70%
1
16.67%
Oliver Neukum
19
7.04%
1
16.67%
Hans de Goede
9
3.33%
1
16.67%
Total
270
100.00%
6
100.00%



static void xhci_pci_remove(struct pci_dev *dev)
{
	struct xhci_hcd *xhci;

	xhci = hcd_to_xhci(pci_get_drvdata(dev));
	xhci->xhc_state |= XHCI_STATE_REMOVING;
	if (xhci->shared_hcd) {
		usb_remove_hcd(xhci->shared_hcd);
		usb_put_hcd(xhci->shared_hcd);
	}

	/* Workaround for spurious wakeups at shutdown with HSW */
	if (xhci->quirks & XHCI_SPURIOUS_WAKEUP)
		pci_set_power_state(dev, PCI_D3hot);

	usb_hcd_pci_remove(dev);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Sarah Sharp
48
64.00%
3
50.00%
Takashi Iwai
16
21.33%
1
16.67%
Mathias Nyman
11
14.67%
2
33.33%
Total
75
100.00%
6
100.00%

#ifdef CONFIG_PM
/*
 * In some Intel xHCI controllers, in order to get D3 working,
 * through a vendor specific SSIC CONFIG register at offset 0x883c,
 * SSIC PORT need to be marked as "unused" before putting xHCI
 * into D3. After D3 exit, the SSIC port need to be marked as "used".
 * Without this change, xHCI might not enter D3 state.
 */


static void xhci_ssic_port_unused_quirk(struct usb_hcd *hcd, bool suspend)
{
	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
	u32 val;
	void __iomem *reg;
	int i;

	for (i = 0; i < SSIC_PORT_NUM; i++) {
		reg = (void __iomem *) xhci->cap_regs +
				SSIC_PORT_CFG2 +
				i * SSIC_PORT_CFG2_OFFSET;

		/* Notify SSIC that SSIC profile programming is not done. */
		val = readl(reg) & ~PROG_DONE;
		writel(val, reg);

		/* Mark SSIC port as unused(suspend) or used(resume) */
		val = readl(reg);
		if (suspend)
			val |= SSIC_PORT_UNUSED;
		else
			val &= ~SSIC_PORT_UNUSED;
		writel(val, reg);

		/* Notify SSIC that SSIC profile programming is done */
		val = readl(reg) | PROG_DONE;
		writel(val, reg);
		readl(reg);
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Tomer Barletz
111
81.62%
1
33.33%
Lu Baolu
25
18.38%
2
66.67%
Total
136
100.00%
3
100.00%

/*
 * Make sure PME works on some Intel xHCI controllers by writing 1 to clear
 * the Internal PME flag bit in vendor specific PMCTRL register at offset 0x80a4
 */


static void xhci_pme_quirk(struct usb_hcd *hcd)
{
	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
	void __iomem *reg;
	u32 val;

	reg = (void __iomem *) xhci->cap_regs + 0x80a4;
	val = readl(reg);
	writel(val | BIT(28), reg);
	readl(reg);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Tomer Barletz
38
57.58%
1
50.00%
Lu Baolu
28
42.42%
1
50.00%
Total
66
100.00%
2
100.00%



static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
{
	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
	struct pci_dev		*pdev = to_pci_dev(hcd->self.controller);
	int			ret;

	/*
         * Systems with the TI redriver that loses port status change events
         * need to have the registers polled during D3, so avoid D3cold.
         */
	if (xhci->quirks & XHCI_COMP_MODE_QUIRK)
		pci_d3cold_disable(pdev);

	if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
		xhci_pme_quirk(hcd);

	if (xhci->quirks & XHCI_SSIC_PORT_UNUSED)
		xhci_ssic_port_unused_quirk(hcd, true);

	ret = xhci_suspend(xhci, do_wakeup);
	if (ret && (xhci->quirks & XHCI_SSIC_PORT_UNUSED))
		xhci_ssic_port_unused_quirk(hcd, false);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Lu Baolu
42
36.84%
3
33.33%
Andiry Brienza
29
25.44%
1
11.11%
Sarah Sharp
20
17.54%
1
11.11%
Mathias Nyman
12
10.53%
1
11.11%
Andrew Bresticker
5
4.39%
1
11.11%
Rajmohan Mani
3
2.63%
1
11.11%
Mika Westerberg
3
2.63%
1
11.11%
Total
114
100.00%
9
100.00%



static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
{
	struct xhci_hcd		*xhci = hcd_to_xhci(hcd);
	struct pci_dev		*pdev = to_pci_dev(hcd->self.controller);
	int			retval = 0;

	/* The BIOS on systems with the Intel Panther Point chipset may or may
         * not support xHCI natively.  That means that during system resume, it
         * may switch the ports back to EHCI so that users can use their
         * keyboard to select a kernel from GRUB after resume from hibernate.
         *
         * The BIOS is supposed to remember whether the OS had xHCI ports
         * enabled before resume, and switch the ports back to xHCI when the
         * BIOS/OS semaphore is written, but we all know we can't trust BIOS
         * writers.
         *
         * Unconditionally switch the ports back to xHCI after a system resume.
         * It should not matter whether the EHCI or xHCI controller is
         * resumed first. It's enough to do the switchover in xHCI because
         * USB core won't notice anything as the hub driver doesn't start
         * running again until after all the devices (including both EHCI and
         * xHCI host controllers) have been resumed.
         */

	if (pdev->vendor == PCI_VENDOR_ID_INTEL)
		usb_enable_intel_xhci_ports(pdev);

	if (xhci->quirks & XHCI_SSIC_PORT_UNUSED)
		xhci_ssic_port_unused_quirk(hcd, false);

	if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
		xhci_pme_quirk(hcd);

	retval = xhci_resume(xhci, hibernated);
	return retval;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Andiry Brienza
41
42.27%
1
16.67%
Sarah Sharp
22
22.68%
1
16.67%
Mathias Nyman
16
16.49%
2
33.33%
Lu Baolu
15
15.46%
1
16.67%
Rajmohan Mani
3
3.09%
1
16.67%
Total
97
100.00%
6
100.00%

#endif /* CONFIG_PM */

/*-------------------------------------------------------------------------*/

/* PCI driver selection metadata; PCI hotplugging uses this */

static const struct pci_device_id pci_ids[] = { {
	/* handle any USB 3.0 xHCI controller */
	PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0),
	.driver_data =	(unsigned long) &xhci_pci_hc_driver,
        },
	{ /* end: all zeroes */ }
};
MODULE_DEVICE_TABLE(pci, pci_ids);

/* pci driver glue; this is a "new style" PCI driver module */

static struct pci_driver xhci_pci_driver = {
	.name =		(char *) hcd_name,
	.id_table =	pci_ids,

	.probe =	xhci_pci_probe,
	.remove =	xhci_pci_remove,
	/* suspend and resume implemented later */

	.shutdown = 	usb_hcd_pci_shutdown,
#ifdef CONFIG_PM
	.driver = {
		.pm = &usb_hcd_pci_pm_ops
	},
#endif
};



static int __init xhci_pci_init(void)
{
	xhci_init_driver(&xhci_pci_hc_driver, &xhci_pci_overrides);
#ifdef CONFIG_PM
	xhci_pci_hc_driver.pci_suspend = xhci_pci_suspend;
	xhci_pci_hc_driver.pci_resume = xhci_pci_resume;
#endif
	return pci_register_driver(&xhci_pci_driver);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Andrew Bresticker
26
61.90%
2
33.33%
Sarah Sharp
10
23.81%
1
16.67%
Randy Dunlap
3
7.14%
1
16.67%
Roger Quadros
2
4.76%
1
16.67%
Sebastian Andrzej Siewior
1
2.38%
1
16.67%
Total
42
100.00%
6
100.00%

module_init(xhci_pci_init);



static void __exit xhci_pci_exit(void)
{
	pci_unregister_driver(&xhci_pci_driver);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Sarah Sharp
9
60.00%
1
33.33%
Randy Dunlap
3
20.00%
1
33.33%
Andrew Bresticker
3
20.00%
1
33.33%
Total
15
100.00%
3
100.00%

module_exit(xhci_pci_exit);

MODULE_DESCRIPTION("xHCI PCI Host Controller Driver");
MODULE_LICENSE("GPL");
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Sarah Sharp
648
30.84%
18
21.95%
Mathias Nyman
279
13.28%
10
12.20%
Lu Baolu
161
7.66%
7
8.54%
Tomer Barletz
149
7.09%
1
1.22%
Andiry Brienza
131
6.24%
3
3.66%
Hans de Goede
96
4.57%
6
7.32%
Oliver Neukum
72
3.43%
3
3.66%
Sebastian Andrzej Siewior
68
3.24%
2
2.44%
Joe Lee
66
3.14%
1
1.22%
Andrew Bresticker
60
2.86%
3
3.66%
Roger Quadros
46
2.19%
2
2.44%
Marc Zyngier
37
1.76%
1
1.22%
Takashi Iwai
33
1.57%
1
1.22%
Maarten Lankhorst
28
1.33%
1
1.22%
Jiahau Chang
24
1.14%
1
1.22%
Kai-Heng Feng
20
0.95%
1
1.22%
Corentin Labbe
20
0.95%
1
1.22%
Andy Shevchenko
20
0.95%
1
1.22%
Rajmohan Mani
16
0.76%
1
1.22%
Daniel R Thompson
16
0.76%
1
1.22%
Mika Westerberg
15
0.71%
2
2.44%
Elric Fu
14
0.67%
1
1.22%
Huang Rui
14
0.67%
1
1.22%
Denis Turischev
13
0.62%
2
2.44%
Xenia Ragiadakou
11
0.52%
1
1.22%
Rafal Redzimski
10
0.48%
1
1.22%
Adam Wallis
7
0.33%
1
1.22%
Laura Abbott
6
0.29%
1
1.22%
Randy Dunlap
6
0.29%
1
1.22%
Wan Ahmad Zainie
6
0.29%
1
1.22%
Paul Gortmaker
3
0.14%
1
1.22%
Ben Hutchings
3
0.14%
1
1.22%
Greg Kroah-Hartman
2
0.10%
2
2.44%
Alan Stern
1
0.05%
1
1.22%
Total
2101
100.00%
82
100.00%
Directory: drivers/usb/host

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.