6.6-stable review patch. If anyone has any objections, please let me know.
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From: Niklas Schnelle schnelle@linux.ibm.com
[ Upstream commit 52e24f8c0a102ac76649c6b71224fadcc82bd5da ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/usb/Kconfig | 10 ++++++++++ drivers/usb/core/hcd-pci.c | 3 +-- drivers/usb/host/pci-quirks.c | 2 ++ drivers/usb/host/pci-quirks.h | 30 ++++++++++++++++++++++-------- include/linux/usb/hcd.h | 17 +++++++++++++++++ 5 files changed, 52 insertions(+), 10 deletions(-)
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index 7f33bcc315f27..abf8c6cdea9ea 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -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" diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c index 990280688b254..ee3156f495338 100644 --- a/drivers/usb/core/hcd-pci.c +++ b/drivers/usb/core/hcd-pci.c @@ -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 */ diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index 5e06fad82a228..10813096d00c6 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -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) { diff --git a/drivers/usb/host/pci-quirks.h b/drivers/usb/host/pci-quirks.h index cde2263a9d2e4..a5230b0b9e913 100644 --- a/drivers/usb/host/pci-quirks.h +++ b/drivers/usb/host/pci-quirks.h @@ -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); @@ -12,23 +12,37 @@ 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); - -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); -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 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); +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_asmedia_modifyflowcontrol(struct pci_dev *pdev) {} static inline void usb_disable_xhci_ports(struct pci_dev *xhci_pdev) {} #endif /* CONFIG_USB_PCI */ diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 61d4f0b793dcd..00724b4f6e122 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -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 */