cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

fifo.h (2903B)

      1/* SPDX-License-Identifier: GPL-1.0+ */
      2/*
      3 * Renesas USB driver
      4 *
      5 * Copyright (C) 2011 Renesas Solutions Corp.
      6 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
      7 */
      8#ifndef RENESAS_USB_FIFO_H
      9#define RENESAS_USB_FIFO_H
     10
     11#include <linux/interrupt.h>
     12#include <linux/sh_dma.h>
     13#include <linux/workqueue.h>
     14#include <asm/dma.h>
     15#include "pipe.h"
     16
     17struct usbhs_fifo {
     18	char *name;
     19	u32 port;	/* xFIFO */
     20	u32 sel;	/* xFIFOSEL */
     21	u32 ctr;	/* xFIFOCTR */
     22
     23	struct usbhs_pipe	*pipe;
     24
     25	struct dma_chan		*tx_chan;
     26	struct dma_chan		*rx_chan;
     27
     28	struct sh_dmae_slave	tx_slave;
     29	struct sh_dmae_slave	rx_slave;
     30};
     31
     32#define USBHS_MAX_NUM_DFIFO	4
     33struct usbhs_fifo_info {
     34	struct usbhs_fifo cfifo;
     35	struct usbhs_fifo dfifo[USBHS_MAX_NUM_DFIFO];
     36};
     37#define usbhsf_get_dnfifo(p, n)	(&((p)->fifo_info.dfifo[n]))
     38#define usbhs_for_each_dfifo(priv, dfifo, i)			\
     39	for ((i) = 0;						\
     40	     ((i) < USBHS_MAX_NUM_DFIFO) &&			\
     41		     ((dfifo) = usbhsf_get_dnfifo(priv, (i)));	\
     42	     (i)++)
     43
     44struct usbhs_pkt_handle;
     45struct usbhs_pkt {
     46	struct list_head node;
     47	struct usbhs_pipe *pipe;
     48	const struct usbhs_pkt_handle *handler;
     49	void (*done)(struct usbhs_priv *priv,
     50		     struct usbhs_pkt *pkt);
     51	struct work_struct work;
     52	dma_addr_t dma;
     53	const struct dmaengine_result *dma_result;
     54	void *buf;
     55	int length;
     56	int trans;
     57	int actual;
     58	int zero;
     59	int sequence;
     60};
     61
     62struct usbhs_pkt_handle {
     63	int (*prepare)(struct usbhs_pkt *pkt, int *is_done);
     64	int (*try_run)(struct usbhs_pkt *pkt, int *is_done);
     65	int (*dma_done)(struct usbhs_pkt *pkt, int *is_done);
     66};
     67
     68/*
     69 * fifo
     70 */
     71int usbhs_fifo_probe(struct usbhs_priv *priv);
     72void usbhs_fifo_remove(struct usbhs_priv *priv);
     73void usbhs_fifo_init(struct usbhs_priv *priv);
     74void usbhs_fifo_quit(struct usbhs_priv *priv);
     75void usbhs_fifo_clear_dcp(struct usbhs_pipe *pipe);
     76
     77/*
     78 * packet info
     79 */
     80extern const struct usbhs_pkt_handle usbhs_fifo_pio_push_handler;
     81extern const struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler;
     82extern const struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler;
     83
     84extern const struct usbhs_pkt_handle usbhs_fifo_dma_push_handler;
     85extern const struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler;
     86
     87extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler;
     88extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler;
     89
     90extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler;
     91extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler;
     92
     93void usbhs_pkt_init(struct usbhs_pkt *pkt);
     94void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
     95		    void (*done)(struct usbhs_priv *priv,
     96				 struct usbhs_pkt *pkt),
     97		    void *buf, int len, int zero, int sequence);
     98struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt);
     99void usbhs_pkt_start(struct usbhs_pipe *pipe);
    100struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe);
    101
    102#endif /* RENESAS_USB_FIFO_H */