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2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
132 lines
3.0 KiB
C
132 lines
3.0 KiB
C
/* USB OTG (On The Go) defines */
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/*
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*
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* These APIs may be used between USB controllers. USB device drivers
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* (for either host or peripheral roles) don't use these calls; they
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* continue to use just usb_device and usb_gadget.
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*/
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#ifndef __LINUX_USB_OTG_H
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#define __LINUX_USB_OTG_H
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#include <linux/phy/phy.h>
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#include <linux/usb/phy.h>
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struct usb_otg {
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u8 default_a;
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struct phy *phy;
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/* old usb_phy interface */
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struct usb_phy *usb_phy;
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struct usb_bus *host;
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struct usb_gadget *gadget;
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enum usb_otg_state state;
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/* bind/unbind the host controller */
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int (*set_host)(struct usb_otg *otg, struct usb_bus *host);
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/* bind/unbind the peripheral controller */
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int (*set_peripheral)(struct usb_otg *otg,
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struct usb_gadget *gadget);
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/* effective for A-peripheral, ignored for B devices */
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int (*set_vbus)(struct usb_otg *otg, bool enabled);
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/* for B devices only: start session with A-Host */
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int (*start_srp)(struct usb_otg *otg);
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/* start or continue HNP role switch */
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int (*start_hnp)(struct usb_otg *otg);
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};
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/**
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* struct usb_otg_caps - describes the otg capabilities of the device
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* @otg_rev: The OTG revision number the device is compliant with, it's
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* in binary-coded decimal (i.e. 2.0 is 0200H).
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* @hnp_support: Indicates if the device supports HNP.
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* @srp_support: Indicates if the device supports SRP.
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* @adp_support: Indicates if the device supports ADP.
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*/
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struct usb_otg_caps {
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u16 otg_rev;
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bool hnp_support;
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bool srp_support;
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bool adp_support;
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};
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extern const char *usb_otg_state_string(enum usb_otg_state state);
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/* Context: can sleep */
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static inline int
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otg_start_hnp(struct usb_otg *otg)
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{
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if (otg && otg->start_hnp)
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return otg->start_hnp(otg);
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return -ENOTSUPP;
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}
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/* Context: can sleep */
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static inline int
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otg_set_vbus(struct usb_otg *otg, bool enabled)
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{
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if (otg && otg->set_vbus)
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return otg->set_vbus(otg, enabled);
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return -ENOTSUPP;
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}
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/* for HCDs */
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static inline int
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otg_set_host(struct usb_otg *otg, struct usb_bus *host)
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{
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if (otg && otg->set_host)
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return otg->set_host(otg, host);
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return -ENOTSUPP;
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}
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/* for usb peripheral controller drivers */
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/* Context: can sleep */
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static inline int
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otg_set_peripheral(struct usb_otg *otg, struct usb_gadget *periph)
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{
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if (otg && otg->set_peripheral)
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return otg->set_peripheral(otg, periph);
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return -ENOTSUPP;
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}
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static inline int
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otg_start_srp(struct usb_otg *otg)
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{
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if (otg && otg->start_srp)
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return otg->start_srp(otg);
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return -ENOTSUPP;
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}
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/* for OTG controller drivers (and maybe other stuff) */
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extern int usb_bus_start_enum(struct usb_bus *bus, unsigned port_num);
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enum usb_dr_mode {
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USB_DR_MODE_UNKNOWN,
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USB_DR_MODE_HOST,
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USB_DR_MODE_PERIPHERAL,
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USB_DR_MODE_OTG,
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};
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/**
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* usb_get_dr_mode - Get dual role mode for given device
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* @dev: Pointer to the given device
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*
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* The function gets phy interface string from property 'dr_mode',
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* and returns the correspondig enum usb_dr_mode
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*/
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extern enum usb_dr_mode usb_get_dr_mode(struct device *dev);
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#endif /* __LINUX_USB_OTG_H */
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