mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 00:30:53 +07:00
c1db30a2a7
Some OHCI controllers from ATI/AMD seem to have difficulty with
"global" USB suspend, that is, suspending an entire USB bus without
setting the suspend feature for each port connected to a device. When
we try to resume the child devices, the controller gives timeout
errors on the unsuspended ports, requiring resets, and can even cause
ohci-hcd to hang; see
http://marc.info/?l=linux-usb&m=139514332820398&w=2
and the following messages.
This patch fixes the problem by adding a new quirk flag to ohci-hcd.
The flag causes the ohci_rh_suspend() routine to suspend each
unsuspended, enabled port before suspending the root hub. This
effectively converts the "global" suspend to an ordinary root-hub
suspend. There is no need to unsuspend these ports when the root hub
is resumed, because the child devices will be resumed anyway in the
course of a normal system resume ("global" suspend is never used for
runtime PM).
This patch should be applied to all stable kernels which include
commit 0aa2832dd0 (USB: use "global suspend" for system sleep on
USB-2 buses) or a backported version thereof.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Peter Münster <pmlists@free.fr>
Tested-by: Peter Münster <pmlists@free.fr>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
316 lines
7.7 KiB
C
316 lines
7.7 KiB
C
/*
|
|
* OHCI HCD (Host Controller Driver) for USB.
|
|
*
|
|
* (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
|
|
* (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
|
|
*
|
|
* [ Initialisation is based on Linus' ]
|
|
* [ uhci code and gregs ohci fragments ]
|
|
* [ (C) Copyright 1999 Linus Torvalds ]
|
|
* [ (C) Copyright 1999 Gregory P. Smith]
|
|
*
|
|
* PCI Bus Glue
|
|
*
|
|
* This file is licenced under the GPL.
|
|
*/
|
|
|
|
#include <linux/io.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/usb/hcd.h>
|
|
|
|
#include "ohci.h"
|
|
#include "pci-quirks.h"
|
|
|
|
#define DRIVER_DESC "OHCI PCI platform driver"
|
|
|
|
static const char hcd_name[] = "ohci-pci";
|
|
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
static int broken_suspend(struct usb_hcd *hcd)
|
|
{
|
|
device_init_wakeup(&hcd->self.root_hub->dev, 0);
|
|
return 0;
|
|
}
|
|
|
|
/* AMD 756, for most chips (early revs), corrupts register
|
|
* values on read ... so enable the vendor workaround.
|
|
*/
|
|
static int ohci_quirk_amd756(struct usb_hcd *hcd)
|
|
{
|
|
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
|
|
|
|
ohci->flags = OHCI_QUIRK_AMD756;
|
|
ohci_dbg (ohci, "AMD756 erratum 4 workaround\n");
|
|
|
|
/* also erratum 10 (suspend/resume issues) */
|
|
return broken_suspend(hcd);
|
|
}
|
|
|
|
/* Apple's OHCI driver has a lot of bizarre workarounds
|
|
* for this chip. Evidently control and bulk lists
|
|
* can get confused. (B&W G3 models, and ...)
|
|
*/
|
|
static int ohci_quirk_opti(struct usb_hcd *hcd)
|
|
{
|
|
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
|
|
|
|
ohci_dbg (ohci, "WARNING: OPTi workarounds unavailable\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Check for NSC87560. We have to look at the bridge (fn1) to
|
|
* identify the USB (fn2). This quirk might apply to more or
|
|
* even all NSC stuff.
|
|
*/
|
|
static int ohci_quirk_ns(struct usb_hcd *hcd)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
|
|
struct pci_dev *b;
|
|
|
|
b = pci_get_slot (pdev->bus, PCI_DEVFN (PCI_SLOT (pdev->devfn), 1));
|
|
if (b && b->device == PCI_DEVICE_ID_NS_87560_LIO
|
|
&& b->vendor == PCI_VENDOR_ID_NS) {
|
|
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
|
|
|
|
ohci->flags |= OHCI_QUIRK_SUPERIO;
|
|
ohci_dbg (ohci, "Using NSC SuperIO setup\n");
|
|
}
|
|
pci_dev_put(b);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Check for Compaq's ZFMicro chipset, which needs short
|
|
* delays before control or bulk queues get re-activated
|
|
* in finish_unlinks()
|
|
*/
|
|
static int ohci_quirk_zfmicro(struct usb_hcd *hcd)
|
|
{
|
|
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
|
|
|
|
ohci->flags |= OHCI_QUIRK_ZFMICRO;
|
|
ohci_dbg(ohci, "enabled Compaq ZFMicro chipset quirks\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Check for Toshiba SCC OHCI which has big endian registers
|
|
* and little endian in memory data structures
|
|
*/
|
|
static int ohci_quirk_toshiba_scc(struct usb_hcd *hcd)
|
|
{
|
|
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
|
|
|
|
/* That chip is only present in the southbridge of some
|
|
* cell based platforms which are supposed to select
|
|
* CONFIG_USB_OHCI_BIG_ENDIAN_MMIO. We verify here if
|
|
* that was the case though.
|
|
*/
|
|
#ifdef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO
|
|
ohci->flags |= OHCI_QUIRK_BE_MMIO;
|
|
ohci_dbg (ohci, "enabled big endian Toshiba quirk\n");
|
|
return 0;
|
|
#else
|
|
ohci_err (ohci, "unsupported big endian Toshiba quirk\n");
|
|
return -ENXIO;
|
|
#endif
|
|
}
|
|
|
|
/* Check for NEC chip and apply quirk for allegedly lost interrupts.
|
|
*/
|
|
|
|
static void ohci_quirk_nec_worker(struct work_struct *work)
|
|
{
|
|
struct ohci_hcd *ohci = container_of(work, struct ohci_hcd, nec_work);
|
|
int status;
|
|
|
|
status = ohci_restart(ohci);
|
|
if (status != 0)
|
|
ohci_err(ohci, "Restarting NEC controller failed in %s, %d\n",
|
|
"ohci_restart", status);
|
|
}
|
|
|
|
static int ohci_quirk_nec(struct usb_hcd *hcd)
|
|
{
|
|
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
|
|
|
|
ohci->flags |= OHCI_QUIRK_NEC;
|
|
INIT_WORK(&ohci->nec_work, ohci_quirk_nec_worker);
|
|
ohci_dbg (ohci, "enabled NEC chipset lost interrupt quirk\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ohci_quirk_amd700(struct usb_hcd *hcd)
|
|
{
|
|
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
|
|
|
|
if (usb_amd_find_chipset_info())
|
|
ohci->flags |= OHCI_QUIRK_AMD_PLL;
|
|
|
|
/* SB800 needs pre-fetch fix */
|
|
if (usb_amd_prefetch_quirk()) {
|
|
ohci->flags |= OHCI_QUIRK_AMD_PREFETCH;
|
|
ohci_dbg(ohci, "enabled AMD prefetch quirk\n");
|
|
}
|
|
|
|
ohci->flags |= OHCI_QUIRK_GLOBAL_SUSPEND;
|
|
return 0;
|
|
}
|
|
|
|
/* List of quirks for OHCI */
|
|
static const struct pci_device_id ohci_pci_quirks[] = {
|
|
{
|
|
PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x740c),
|
|
.driver_data = (unsigned long)ohci_quirk_amd756,
|
|
},
|
|
{
|
|
PCI_DEVICE(PCI_VENDOR_ID_OPTI, 0xc861),
|
|
.driver_data = (unsigned long)ohci_quirk_opti,
|
|
},
|
|
{
|
|
PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_ANY_ID),
|
|
.driver_data = (unsigned long)ohci_quirk_ns,
|
|
},
|
|
{
|
|
PCI_DEVICE(PCI_VENDOR_ID_COMPAQ, 0xa0f8),
|
|
.driver_data = (unsigned long)ohci_quirk_zfmicro,
|
|
},
|
|
{
|
|
PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, 0x01b6),
|
|
.driver_data = (unsigned long)ohci_quirk_toshiba_scc,
|
|
},
|
|
{
|
|
PCI_DEVICE(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB),
|
|
.driver_data = (unsigned long)ohci_quirk_nec,
|
|
},
|
|
{
|
|
/* Toshiba portege 4000 */
|
|
.vendor = PCI_VENDOR_ID_AL,
|
|
.device = 0x5237,
|
|
.subvendor = PCI_VENDOR_ID_TOSHIBA,
|
|
.subdevice = 0x0004,
|
|
.driver_data = (unsigned long) broken_suspend,
|
|
},
|
|
{
|
|
PCI_DEVICE(PCI_VENDOR_ID_ITE, 0x8152),
|
|
.driver_data = (unsigned long) broken_suspend,
|
|
},
|
|
{
|
|
PCI_DEVICE(PCI_VENDOR_ID_ATI, 0x4397),
|
|
.driver_data = (unsigned long)ohci_quirk_amd700,
|
|
},
|
|
{
|
|
PCI_DEVICE(PCI_VENDOR_ID_ATI, 0x4398),
|
|
.driver_data = (unsigned long)ohci_quirk_amd700,
|
|
},
|
|
{
|
|
PCI_DEVICE(PCI_VENDOR_ID_ATI, 0x4399),
|
|
.driver_data = (unsigned long)ohci_quirk_amd700,
|
|
},
|
|
|
|
/* FIXME for some of the early AMD 760 southbridges, OHCI
|
|
* won't work at all. blacklist them.
|
|
*/
|
|
|
|
{},
|
|
};
|
|
|
|
static int ohci_pci_reset (struct usb_hcd *hcd)
|
|
{
|
|
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
|
|
struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
|
|
int ret = 0;
|
|
|
|
if (hcd->self.controller) {
|
|
const struct pci_device_id *quirk_id;
|
|
|
|
quirk_id = pci_match_id(ohci_pci_quirks, pdev);
|
|
if (quirk_id != NULL) {
|
|
int (*quirk)(struct usb_hcd *ohci);
|
|
quirk = (void *)quirk_id->driver_data;
|
|
ret = quirk(hcd);
|
|
}
|
|
}
|
|
|
|
if (ret == 0)
|
|
ret = ohci_setup(hcd);
|
|
/*
|
|
* After ohci setup RWC may not be set for add-in PCI cards.
|
|
* This transfers PCI PM wakeup capabilities.
|
|
*/
|
|
if (device_can_wakeup(&pdev->dev))
|
|
ohci->hc_control |= OHCI_CTRL_RWC;
|
|
return ret;
|
|
}
|
|
|
|
static struct hc_driver __read_mostly ohci_pci_hc_driver;
|
|
|
|
static const struct ohci_driver_overrides pci_overrides __initconst = {
|
|
.product_desc = "OHCI PCI host controller",
|
|
.reset = ohci_pci_reset,
|
|
};
|
|
|
|
static const struct pci_device_id pci_ids [] = { {
|
|
/* handle any USB OHCI controller */
|
|
PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_OHCI, ~0),
|
|
.driver_data = (unsigned long) &ohci_pci_hc_driver,
|
|
}, {
|
|
/* The device in the ConneXT I/O hub has no class reg */
|
|
PCI_VDEVICE(STMICRO, PCI_DEVICE_ID_STMICRO_USB_OHCI),
|
|
.driver_data = (unsigned long) &ohci_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 ohci_pci_driver = {
|
|
.name = (char *) hcd_name,
|
|
.id_table = pci_ids,
|
|
|
|
.probe = usb_hcd_pci_probe,
|
|
.remove = usb_hcd_pci_remove,
|
|
.shutdown = usb_hcd_pci_shutdown,
|
|
|
|
#ifdef CONFIG_PM
|
|
.driver = {
|
|
.pm = &usb_hcd_pci_pm_ops
|
|
},
|
|
#endif
|
|
};
|
|
|
|
static int __init ohci_pci_init(void)
|
|
{
|
|
if (usb_disabled())
|
|
return -ENODEV;
|
|
|
|
pr_info("%s: " DRIVER_DESC "\n", hcd_name);
|
|
|
|
ohci_init_driver(&ohci_pci_hc_driver, &pci_overrides);
|
|
|
|
#ifdef CONFIG_PM
|
|
/* Entries for the PCI suspend/resume callbacks are special */
|
|
ohci_pci_hc_driver.pci_suspend = ohci_suspend;
|
|
ohci_pci_hc_driver.pci_resume = ohci_resume;
|
|
#endif
|
|
|
|
return pci_register_driver(&ohci_pci_driver);
|
|
}
|
|
module_init(ohci_pci_init);
|
|
|
|
static void __exit ohci_pci_cleanup(void)
|
|
{
|
|
pci_unregister_driver(&ohci_pci_driver);
|
|
}
|
|
module_exit(ohci_pci_cleanup);
|
|
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_SOFTDEP("pre: ehci_pci");
|