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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mod.h (4312B)


      1/* SPDX-License-Identifier: GPL-1.0+ */
      2/*
      3 * Renesas USB driver
      4 *
      5 * Copyright (C) 2011 Renesas Solutions Corp.
      6 * Copyright (C) 2019 Renesas Electronics Corporation
      7 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
      8 */
      9#ifndef RENESAS_USB_MOD_H
     10#define RENESAS_USB_MOD_H
     11
     12#include <linux/spinlock.h>
     13#include <linux/usb/renesas_usbhs.h>
     14#include "common.h"
     15
     16/*
     17 *	struct
     18 */
     19struct usbhs_irq_state {
     20	u16 intsts0;
     21	u16 intsts1;
     22	u16 brdysts;
     23	u16 nrdysts;
     24	u16 bempsts;
     25};
     26
     27struct usbhs_mod {
     28	char *name;
     29
     30	/*
     31	 * entry point from common.c
     32	 */
     33	int (*start)(struct usbhs_priv *priv);
     34	int (*stop)(struct usbhs_priv *priv);
     35
     36	/*
     37	 * INTSTS0
     38	 */
     39
     40	/* DVST (DVSQ) */
     41	int (*irq_dev_state)(struct usbhs_priv *priv,
     42			     struct usbhs_irq_state *irq_state);
     43
     44	/* CTRT (CTSQ) */
     45	int (*irq_ctrl_stage)(struct usbhs_priv *priv,
     46			      struct usbhs_irq_state *irq_state);
     47
     48	/* BEMP / BEMPSTS */
     49	int (*irq_empty)(struct usbhs_priv *priv,
     50			 struct usbhs_irq_state *irq_state);
     51	u16 irq_bempsts;
     52
     53	/* BRDY / BRDYSTS */
     54	int (*irq_ready)(struct usbhs_priv *priv,
     55			 struct usbhs_irq_state *irq_state);
     56	u16 irq_brdysts;
     57
     58	/*
     59	 * INTSTS1
     60	 */
     61
     62	/* ATTCHE */
     63	int (*irq_attch)(struct usbhs_priv *priv,
     64			 struct usbhs_irq_state *irq_state);
     65
     66	/* DTCHE */
     67	int (*irq_dtch)(struct usbhs_priv *priv,
     68			struct usbhs_irq_state *irq_state);
     69
     70	/* SIGN */
     71	int (*irq_sign)(struct usbhs_priv *priv,
     72			struct usbhs_irq_state *irq_state);
     73
     74	/* SACK */
     75	int (*irq_sack)(struct usbhs_priv *priv,
     76			struct usbhs_irq_state *irq_state);
     77
     78	struct usbhs_priv *priv;
     79};
     80
     81struct usbhs_mod_info {
     82	struct usbhs_mod *mod[USBHS_MAX];
     83	struct usbhs_mod *curt; /* current mod */
     84
     85	/*
     86	 * INTSTS0 :: VBINT
     87	 *
     88	 * This function will be used as autonomy mode (runtime_pwctrl == 0)
     89	 * when the platform doesn't have own get_vbus function.
     90	 *
     91	 * This callback cannot be member of "struct usbhs_mod" because it
     92	 * will be used even though host/gadget has not been selected.
     93	 */
     94	int (*irq_vbus)(struct usbhs_priv *priv,
     95			struct usbhs_irq_state *irq_state);
     96
     97	/*
     98	 * This function will be used on any gadget mode. To simplify the code,
     99	 * this member is in here.
    100	 */
    101	int (*get_vbus)(struct platform_device *pdev);
    102};
    103
    104/*
    105 *		for host/gadget module
    106 */
    107struct usbhs_mod *usbhs_mod_get(struct usbhs_priv *priv, int id);
    108struct usbhs_mod *usbhs_mod_get_current(struct usbhs_priv *priv);
    109void usbhs_mod_register(struct usbhs_priv *priv, struct usbhs_mod *usb, int id);
    110int usbhs_mod_is_host(struct usbhs_priv *priv);
    111int usbhs_mod_change(struct usbhs_priv *priv, int id);
    112int usbhs_mod_probe(struct usbhs_priv *priv);
    113void usbhs_mod_remove(struct usbhs_priv *priv);
    114
    115void usbhs_mod_autonomy_mode(struct usbhs_priv *priv);
    116void usbhs_mod_non_autonomy_mode(struct usbhs_priv *priv);
    117
    118/*
    119 *		status functions
    120 */
    121int usbhs_status_get_device_state(struct usbhs_irq_state *irq_state);
    122int usbhs_status_get_ctrl_stage(struct usbhs_irq_state *irq_state);
    123
    124/*
    125 *		callback functions
    126 */
    127void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod);
    128
    129
    130#define usbhs_mod_call(priv, func, param...)		\
    131	({						\
    132		struct usbhs_mod *mod;			\
    133		mod = usbhs_mod_get_current(priv);	\
    134		!mod		? -ENODEV :		\
    135		!mod->func	? 0 :			\
    136		 mod->func(param);			\
    137	})
    138
    139#define usbhs_priv_to_modinfo(priv) (&priv->mod_info)
    140#define usbhs_mod_info_call(priv, func, param...)	\
    141({							\
    142	struct usbhs_mod_info *info;			\
    143	info = usbhs_priv_to_modinfo(priv);		\
    144	!info->func ? 0 :				\
    145	 info->func(param);				\
    146})
    147
    148/*
    149 * host / gadget control
    150 */
    151#if	defined(CONFIG_USB_RENESAS_USBHS_HCD) || \
    152	defined(CONFIG_USB_RENESAS_USBHS_HCD_MODULE)
    153extern int usbhs_mod_host_probe(struct usbhs_priv *priv);
    154extern int usbhs_mod_host_remove(struct usbhs_priv *priv);
    155#else
    156static inline int usbhs_mod_host_probe(struct usbhs_priv *priv)
    157{
    158	return 0;
    159}
    160static inline void usbhs_mod_host_remove(struct usbhs_priv *priv)
    161{
    162}
    163#endif
    164
    165#if	defined(CONFIG_USB_RENESAS_USBHS_UDC) || \
    166	defined(CONFIG_USB_RENESAS_USBHS_UDC_MODULE)
    167extern int usbhs_mod_gadget_probe(struct usbhs_priv *priv);
    168extern void usbhs_mod_gadget_remove(struct usbhs_priv *priv);
    169#else
    170static inline int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
    171{
    172	return 0;
    173}
    174static inline void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
    175{
    176}
    177#endif
    178
    179#endif /* RENESAS_USB_MOD_H */