aboutsummaryrefslogtreecommitdiff
path: root/drivers/usb/host/xhci-pci.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/usb/host/xhci-pci.c')
-rw-r--r--drivers/usb/host/xhci-pci.c324
1 files changed, 277 insertions, 47 deletions
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index e097008d6fb..e20520f4275 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -21,12 +21,22 @@
*/
#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/module.h>
#include "xhci.h"
+#include "xhci-trace.h"
/* 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_FL1400 0x1400
+
+#define PCI_VENDOR_ID_ETRON 0x1b6f
+#define PCI_DEVICE_ID_ASROCK_P67 0x7023
+
+#define PCI_DEVICE_ID_INTEL_LYNXPOINT_XHCI 0x8c31
+#define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
static const char hcd_name[] = "xhci_hcd";
@@ -47,81 +57,282 @@ static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev)
return 0;
}
-/* called during probe() after chip reset completes */
-static int xhci_pci_setup(struct usb_hcd *hcd)
+static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
{
- struct xhci_hcd *xhci = hcd_to_xhci(hcd);
- struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
- int retval;
-
- hcd->self.sg_tablesize = TRBS_PER_SEGMENT - 1;
-
- xhci->cap_regs = hcd->regs;
- xhci->op_regs = hcd->regs +
- HC_LENGTH(xhci_readl(xhci, &xhci->cap_regs->hc_capbase));
- xhci->run_regs = hcd->regs +
- (xhci_readl(xhci, &xhci->cap_regs->run_regs_off) & RTSOFF_MASK);
- /* Cache read-only capability registers */
- xhci->hcs_params1 = xhci_readl(xhci, &xhci->cap_regs->hcs_params1);
- xhci->hcs_params2 = xhci_readl(xhci, &xhci->cap_regs->hcs_params2);
- xhci->hcs_params3 = xhci_readl(xhci, &xhci->cap_regs->hcs_params3);
- xhci->hcc_params = xhci_readl(xhci, &xhci->cap_regs->hc_capbase);
- xhci->hci_version = HC_VERSION(xhci->hcc_params);
- xhci->hcc_params = xhci_readl(xhci, &xhci->cap_regs->hcc_params);
- xhci_print_registers(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->revision == 0x0) {
+ (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(xhci, "QUIRK: Fresco Logic xHC needs configure"
- " endpoint cmd after reset endpoint\n");
+ 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);
+ }
+ /* 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;
}
- /* Make sure the HC is halted. */
- retval = xhci_halt(xhci);
- if (retval)
- return retval;
+ if (pdev->vendor == PCI_VENDOR_ID_NEC)
+ xhci->quirks |= XHCI_NEC_HOST;
- xhci_dbg(xhci, "Resetting HCD\n");
- /* Reset the internal HC memory state and registers. */
- retval = xhci_reset(xhci);
- if (retval)
- return retval;
- xhci_dbg(xhci, "Reset complete\n");
+ 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_INTEL) {
+ xhci->quirks |= XHCI_LPM_SUPPORT;
+ xhci->quirks |= XHCI_INTEL_HOST;
+ }
+ 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;
+ xhci->quirks |= XHCI_AVOID_BEI;
+ }
+ if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
+ (pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_XHCI ||
+ pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI)) {
+ /* Workaround for occasional spurious wakeups from S5 (or
+ * any other sleep) on Haswell machines with LPT and LPT-LP
+ * with the new Intel BIOS
+ */
+ /* Limit the quirk to only known vendors, as this triggers
+ * yet another BIOS bug on some other machines
+ * https://bugzilla.kernel.org/show_bug.cgi?id=66171
+ */
+ if (pdev->subsystem_vendor == PCI_VENDOR_ID_HP)
+ xhci->quirks |= XHCI_SPURIOUS_WAKEUP;
+ }
+ if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
+ pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI) {
+ xhci->quirks |= XHCI_SPURIOUS_REBOOT;
+ }
+ if (pdev->vendor == PCI_VENDOR_ID_ETRON &&
+ pdev->device == PCI_DEVICE_ID_ASROCK_P67) {
+ xhci->quirks |= XHCI_RESET_ON_RESUME;
+ 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;
+
+ if (xhci->quirks & XHCI_RESET_ON_RESUME)
+ xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
+ "QUIRK: Resetting on resume");
+}
- xhci_dbg(xhci, "Calling HCD init\n");
- /* Initialize HCD and host controller data structures. */
- retval = xhci_init(hcd);
+/* 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;
+
+ retval = xhci_gen_setup(hcd, xhci_pci_quirks);
if (retval)
return retval;
- xhci_dbg(xhci, "Called HCD init\n");
+
+ xhci = hcd_to_xhci(hcd);
+ if (!usb_hcd_is_primary_hcd(hcd))
+ return 0;
pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn);
xhci_dbg(xhci, "Got SBRN %u\n", (unsigned int) xhci->sbrn);
/* Find any debug ports */
- return xhci_pci_reinit(xhci, pdev);
+ retval = xhci_pci_reinit(xhci, pdev);
+ if (!retval)
+ return retval;
+
+ kfree(xhci);
+ return retval;
}
+/*
+ * 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;
+
+ /* 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;
+ }
+
+ /* Set the xHCI pointer before xhci_pci_setup() (aka hcd_driver.reset)
+ * is called by usb_add_hcd().
+ */
+ *((struct xhci_hcd **) xhci->shared_hcd->hcd_priv) = xhci;
+
+ 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 (HCC_MAX_PSA(xhci->hcc_params) >= 4)
+ xhci->shared_hcd->can_do_streams = 1;
+
+ /* 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;
+}
+
+static void xhci_pci_remove(struct pci_dev *dev)
+{
+ struct xhci_hcd *xhci;
+
+ xhci = hcd_to_xhci(pci_get_drvdata(dev));
+ if (xhci->shared_hcd) {
+ usb_remove_hcd(xhci->shared_hcd);
+ usb_put_hcd(xhci->shared_hcd);
+ }
+ usb_hcd_pci_remove(dev);
+
+ /* Workaround for spurious wakeups at shutdown with HSW */
+ if (xhci->quirks & XHCI_SPURIOUS_WAKEUP)
+ pci_set_power_state(dev, PCI_D3hot);
+
+ kfree(xhci);
+}
+
+#ifdef CONFIG_PM
+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);
+
+ /*
+ * Systems with the TI redriver that loses port status change events
+ * need to have the registers polled during D3, so avoid D3cold.
+ */
+ if (xhci_compliance_mode_recovery_timer_quirk_check())
+ pdev->no_d3cold = true;
+
+ return xhci_suspend(xhci);
+}
+
+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);
+
+ retval = xhci_resume(xhci, hibernated);
+ return retval;
+}
+#endif /* CONFIG_PM */
+
static const struct hc_driver xhci_pci_hc_driver = {
.description = hcd_name,
.product_desc = "xHCI Host Controller",
- .hcd_priv_size = sizeof(struct xhci_hcd),
+ .hcd_priv_size = sizeof(struct xhci_hcd *),
/*
* generic hardware linkage
*/
.irq = xhci_irq,
- .flags = HCD_MEMORY | HCD_USB3,
+ .flags = HCD_MEMORY | HCD_USB3 | HCD_SHARED,
/*
* basic lifecycle operations
*/
.reset = xhci_pci_setup,
.start = xhci_run,
- /* suspend and resume implemented later */
+#ifdef CONFIG_PM
+ .pci_suspend = xhci_pci_suspend,
+ .pci_resume = xhci_pci_resume,
+#endif
.stop = xhci_stop,
.shutdown = xhci_shutdown,
@@ -132,13 +343,17 @@ static const struct hc_driver xhci_pci_hc_driver = {
.urb_dequeue = xhci_urb_dequeue,
.alloc_dev = xhci_alloc_dev,
.free_dev = xhci_free_dev,
+ .alloc_streams = xhci_alloc_streams,
+ .free_streams = xhci_free_streams,
.add_endpoint = xhci_add_endpoint,
.drop_endpoint = xhci_drop_endpoint,
.endpoint_reset = xhci_endpoint_reset,
.check_bandwidth = xhci_check_bandwidth,
.reset_bandwidth = xhci_reset_bandwidth,
.address_device = xhci_address_device,
+ .enable_device = xhci_enable_device,
.update_hub_device = xhci_update_hub_device,
+ .reset_device = xhci_discover_or_reset_device,
/*
* scheduling support
@@ -148,6 +363,16 @@ static const struct hc_driver xhci_pci_hc_driver = {
/* Root hub support */
.hub_control = xhci_hub_control,
.hub_status_data = xhci_hub_status_data,
+ .bus_suspend = xhci_bus_suspend,
+ .bus_resume = xhci_bus_resume,
+ /*
+ * call back when device connected and addressed
+ */
+ .update_device = xhci_update_device,
+ .set_usb2_hw_lpm = xhci_set_usb2_hardware_lpm,
+ .enable_usb3_lpm_timeout = xhci_enable_usb3_lpm_timeout,
+ .disable_usb3_lpm_timeout = xhci_disable_usb3_lpm_timeout,
+ .find_raw_port_number = xhci_find_raw_port_number,
};
/*-------------------------------------------------------------------------*/
@@ -167,19 +392,24 @@ static struct pci_driver xhci_pci_driver = {
.name = (char *) hcd_name,
.id_table = pci_ids,
- .probe = usb_hcd_pci_probe,
- .remove = usb_hcd_pci_remove,
+ .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
};
-int xhci_register_pci()
+int __init xhci_register_pci(void)
{
return pci_register_driver(&xhci_pci_driver);
}
-void xhci_unregister_pci()
+void xhci_unregister_pci(void)
{
pci_unregister_driver(&xhci_pci_driver);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 13:05:44 +0000