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usb: pci-quirks: handle HAS_IOPORT dependency for AMD quirk

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In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
not being declared. In the pci-quirks case the I/O port acceses are
used in the quirks for several AMD south bridges, Add a config option
for the AMD quirks to depend on HAS_IOPORT and #ifdef the quirk code.

Co-developed-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Link: https://lore.kernel.org/r/20230911125653.1393895-3-schnelle@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Niklas Schnelle 2023-09-11 14:56:52 +02:00 • committed by Greg Kroah-Hartman
parent 7ca9f9ba8a
commit 52e24f8c0a
5 changed files with 54 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
drivers/usb/Kconfig
View file

@ -91,6 +91,16 @@ config USB_PCI
If you have such a device you may say N here and PCI related code
will not be built in the USB driver.
config USB_PCI_AMD
bool "AMD PCI USB host support"
depends on USB_PCI && HAS_IOPORT
default X86 || MACH_LOONGSON64 || PPC_PASEMI
help
Enable workarounds for USB implementation quirks in SB600/SB700/SB800
and later south bridge implementations. These are common on x86 PCs
with AMD CPUs but rarely used elsewhere, with the exception of a few
powerpc and mips desktop machines.
if USB
source "drivers/usb/core/Kconfig"

3
drivers/usb/core/hcd-pci.c
View file

@ -206,8 +206,7 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct hc_driver *driver)
goto free_irq_vectors;
}
hcd->amd_resume_bug = (usb_hcd_amd_remote_wakeup_quirk(dev) &&
driver->flags & (HCD_USB11 | HCD_USB3)) ? 1 : 0;
hcd->amd_resume_bug = usb_hcd_amd_resume_bug(dev, driver);
if (driver->flags & HCD_MEMORY) {
/* EHCI, OHCI */

2
drivers/usb/host/pci-quirks.c
View file

@ -76,6 +76,7 @@
#define USB_INTEL_USB3_PSSEN 0xD8
#define USB_INTEL_USB3PRM 0xDC
#ifdef CONFIG_USB_PCI_AMD
/* AMD quirk use */
#define AB_REG_BAR_LOW 0xe0
#define AB_REG_BAR_HIGH 0xe1
@ -587,6 +588,7 @@ bool usb_amd_pt_check_port(struct device *device, int port)
return !(value & BIT(port_shift));
}
EXPORT_SYMBOL_GPL(usb_amd_pt_check_port);
#endif /* CONFIG_USB_PCI_AMD */
static int usb_asmedia_wait_write(struct pci_dev *pdev)
{

34
drivers/usb/host/pci-quirks.h
View file

@ -2,7 +2,7 @@
#ifndef __LINUX_USB_PCI_QUIRKS_H
#define __LINUX_USB_PCI_QUIRKS_H
#ifdef CONFIG_USB_PCI
#ifdef CONFIG_USB_PCI_AMD
int usb_hcd_amd_remote_wakeup_quirk(struct pci_dev *pdev);
bool usb_amd_hang_symptom_quirk(void);
bool usb_amd_prefetch_quirk(void);
@ -12,7 +12,30 @@ void usb_amd_quirk_pll_disable(void);
void usb_amd_quirk_pll_enable(void);
void sb800_prefetch(struct device *dev, int on);
bool usb_amd_pt_check_port(struct device *device, int port);
#else
static inline bool usb_amd_hang_symptom_quirk(void)
{
return false;
};
static inline bool usb_amd_prefetch_quirk(void)
{
return false;
}
static inline void usb_amd_quirk_pll_disable(void) {}
static inline void usb_amd_quirk_pll_enable(void) {}
static inline void usb_amd_dev_put(void) {}
static inline bool usb_amd_quirk_pll_check(void)
{
return false;
}
static inline void sb800_prefetch(struct device *dev, int on) {}
static inline bool usb_amd_pt_check_port(struct device *device, int port)
{
return false;
}
#endif /* CONFIG_USB_PCI_AMD */
#ifdef CONFIG_USB_PCI
void uhci_reset_hc(struct pci_dev *pdev, unsigned long base);
int uhci_check_and_reset_hc(struct pci_dev *pdev, unsigned long base);
void usb_asmedia_modifyflowcontrol(struct pci_dev *pdev);
@ -20,15 +43,6 @@ void usb_enable_intel_xhci_ports(struct pci_dev *xhci_pdev);
void usb_disable_xhci_ports(struct pci_dev *xhci_pdev);
#else
struct pci_dev;
static inline void usb_amd_quirk_pll_disable(void) {}
static inline void usb_amd_quirk_pll_enable(void) {}
static inline void usb_amd_dev_put(void) {}
static inline void sb800_prefetch(struct device *dev, int on) {}
static inline bool usb_amd_pt_check_port(struct device *device, int port)
{
return false;
}
static inline void usb_asmedia_modifyflowcontrol(struct pci_dev *pdev) {}
static inline void usb_disable_xhci_ports(struct pci_dev *xhci_pdev) {}
#endif /* CONFIG_USB_PCI */

17
include/linux/usb/hcd.h
View file

@ -484,8 +484,25 @@ extern int usb_hcd_pci_probe(struct pci_dev *dev,
extern void usb_hcd_pci_remove(struct pci_dev *dev);
extern void usb_hcd_pci_shutdown(struct pci_dev *dev);
#ifdef CONFIG_USB_PCI_AMD
extern int usb_hcd_amd_remote_wakeup_quirk(struct pci_dev *dev);
static inline bool usb_hcd_amd_resume_bug(struct pci_dev *dev,
const struct hc_driver *driver)
{
if (!usb_hcd_amd_remote_wakeup_quirk(dev))
return false;
if (driver->flags & (HCD_USB11 | HCD_USB3))
return true;
return false;
}
#else /* CONFIG_USB_PCI_AMD */
static inline bool usb_hcd_amd_resume_bug(struct pci_dev *dev,
const struct hc_driver *driver)
{
return false;
}
#endif
extern const struct dev_pm_ops usb_hcd_pci_pm_ops;
#endif /* CONFIG_USB_PCI */