cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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typec_dp.h (3629B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef __USB_TYPEC_DP_H
      3#define __USB_TYPEC_DP_H
      4
      5#include <linux/usb/typec_altmode.h>
      6
      7#define USB_TYPEC_DP_SID	0xff01
      8/* USB IF has not assigned a Standard ID (SID) for VirtualLink,
      9 * so the manufacturers of VirtualLink adapters use their Vendor
     10 * IDs as the SVID.
     11 */
     12#define USB_TYPEC_NVIDIA_VLINK_SID	0x955	/* NVIDIA VirtualLink */
     13#define USB_TYPEC_DP_MODE	1
     14
     15/*
     16 * Connector states matching the pin assignments in DisplayPort Alt Mode
     17 * Specification.
     18 *
     19 * These values are meant primarily to be used by the mux drivers, but they are
     20 * also used as the "value" part in the alternate mode notification chain, so
     21 * receivers of those notifications will always see them.
     22 *
     23 * Note. DisplayPort USB Type-C Alt Mode Specification version 1.0b deprecated
     24 * pin assignments A, B and F, but they are still defined here for legacy
     25 * purposes.
     26 */
     27enum {
     28	TYPEC_DP_STATE_A = TYPEC_STATE_MODAL,	/* Not supported after v1.0b */
     29	TYPEC_DP_STATE_B,			/* Not supported after v1.0b */
     30	TYPEC_DP_STATE_C,
     31	TYPEC_DP_STATE_D,
     32	TYPEC_DP_STATE_E,
     33	TYPEC_DP_STATE_F,			/* Not supported after v1.0b */
     34};
     35
     36/*
     37 * struct typec_displayport_data - DisplayPort Alt Mode specific data
     38 * @status: Status Update command VDO content
     39 * @conf: Configure command VDO content
     40 *
     41 * This structure is delivered as the data part with the notifications. It
     42 * contains the VDOs from the two DisplayPort Type-C alternate mode specific
     43 * commands: Status Update and Configure.
     44 *
     45 * @status will show for example the status of the HPD signal.
     46 */
     47struct typec_displayport_data {
     48	u32 status;
     49	u32 conf;
     50};
     51
     52enum {
     53	DP_PIN_ASSIGN_A, /* Not supported after v1.0b */
     54	DP_PIN_ASSIGN_B, /* Not supported after v1.0b */
     55	DP_PIN_ASSIGN_C,
     56	DP_PIN_ASSIGN_D,
     57	DP_PIN_ASSIGN_E,
     58	DP_PIN_ASSIGN_F, /* Not supported after v1.0b */
     59};
     60
     61/* DisplayPort alt mode specific commands */
     62#define DP_CMD_STATUS_UPDATE		VDO_CMD_VENDOR(0)
     63#define DP_CMD_CONFIGURE		VDO_CMD_VENDOR(1)
     64
     65/* DisplayPort Capabilities VDO bits (returned with Discover Modes) */
     66#define DP_CAP_CAPABILITY(_cap_)	((_cap_) & 3)
     67#define   DP_CAP_UFP_D			1
     68#define   DP_CAP_DFP_D			2
     69#define   DP_CAP_DFP_D_AND_UFP_D	3
     70#define DP_CAP_DP_SIGNALING		BIT(2) /* Always set */
     71#define DP_CAP_GEN2			BIT(3) /* Reserved after v1.0b */
     72#define DP_CAP_RECEPTACLE		BIT(6)
     73#define DP_CAP_USB			BIT(7)
     74#define DP_CAP_DFP_D_PIN_ASSIGN(_cap_)	(((_cap_) & GENMASK(15, 8)) >> 8)
     75#define DP_CAP_UFP_D_PIN_ASSIGN(_cap_)	(((_cap_) & GENMASK(23, 16)) >> 16)
     76
     77/* DisplayPort Status Update VDO bits */
     78#define DP_STATUS_CONNECTION(_status_)	((_status_) & 3)
     79#define   DP_STATUS_CON_DISABLED	0
     80#define   DP_STATUS_CON_DFP_D		1
     81#define   DP_STATUS_CON_UFP_D		2
     82#define   DP_STATUS_CON_BOTH		3
     83#define DP_STATUS_POWER_LOW		BIT(2)
     84#define DP_STATUS_ENABLED		BIT(3)
     85#define DP_STATUS_PREFER_MULTI_FUNC	BIT(4)
     86#define DP_STATUS_SWITCH_TO_USB		BIT(5)
     87#define DP_STATUS_EXIT_DP_MODE		BIT(6)
     88#define DP_STATUS_HPD_STATE		BIT(7) /* 0 = HPD_Low, 1 = HPD_High */
     89#define DP_STATUS_IRQ_HPD		BIT(8)
     90
     91/* DisplayPort Configurations VDO bits */
     92#define DP_CONF_CURRENTLY(_conf_)	((_conf_) & 3)
     93#define DP_CONF_UFP_U_AS_DFP_D		BIT(0)
     94#define DP_CONF_UFP_U_AS_UFP_D		BIT(1)
     95#define DP_CONF_SIGNALING_DP		BIT(2)
     96#define DP_CONF_SIGNALING_GEN_2		BIT(3) /* Reserved after v1.0b */
     97#define DP_CONF_PIN_ASSIGNEMENT_SHIFT	8
     98#define DP_CONF_PIN_ASSIGNEMENT_MASK	GENMASK(15, 8)
     99
    100/* Helper for setting/getting the pin assignment value to the configuration */
    101#define DP_CONF_SET_PIN_ASSIGN(_a_)	((_a_) << 8)
    102#define DP_CONF_GET_PIN_ASSIGN(_conf_)	(((_conf_) & GENMASK(15, 8)) >> 8)
    103
    104#endif /* __USB_TYPEC_DP_H */