Orange Pi5 kernel

/* SPDX-License-Identifier: GPL-2.0-or-later */
/* 
 *  Parallel SCSI (SPI) transport specific attributes exported to sysfs.
 *
 *  Copyright (c) 2003 Silicon Graphics, Inc.  All rights reserved.
 */
#ifndef SCSI_TRANSPORT_SPI_H
#define SCSI_TRANSPORT_SPI_H
 
#include <linux/transport_class.h>
#include <linux/mutex.h>
 
struct scsi_transport_template;
struct scsi_target;
struct scsi_device;
struct Scsi_Host;
 
struct spi_transport_attrs {
<------>int period;		/* value in the PPR/SDTR command */
<------>int min_period;
<------>int offset;
<------>int max_offset;
<------>unsigned int width:1;	/* 0 - narrow, 1 - wide */
<------>unsigned int max_width:1;
<------>unsigned int iu:1;	/* Information Units enabled */
<------>unsigned int max_iu:1;
<------>unsigned int dt:1;	/* DT clocking enabled */
<------>unsigned int qas:1;	/* Quick Arbitration and Selection enabled */
<------>unsigned int max_qas:1;
<------>unsigned int wr_flow:1;	/* Write Flow control enabled */
<------>unsigned int rd_strm:1;	/* Read streaming enabled */
<------>unsigned int rti:1;	/* Retain Training Information */
<------>unsigned int pcomp_en:1;/* Precompensation enabled */
<------>unsigned int hold_mcs:1;/* Hold Margin Control Settings */
<------>unsigned int initial_dv:1; /* DV done to this target yet  */
<------>unsigned long flags;	/* flags field for drivers to use */
<------>/* Device Properties fields */
<------>unsigned int support_sync:1; /* synchronous support */
<------>unsigned int support_wide:1; /* wide support */
<------>unsigned int support_dt:1; /* allows DT phases */
<------>unsigned int support_dt_only; /* disallows ST phases */
<------>unsigned int support_ius; /* support Information Units */
<------>unsigned int support_qas; /* supports quick arbitration and selection */
<------>/* Private Fields */
<------>unsigned int dv_pending:1; /* Internal flag: DV Requested */
<------>unsigned int dv_in_progress:1;	/* Internal: DV started */
<------>struct mutex dv_mutex; /* semaphore to serialise dv */
};
 
enum spi_signal_type {
<------>SPI_SIGNAL_UNKNOWN = 1,
<------>SPI_SIGNAL_SE,
<------>SPI_SIGNAL_LVD,
<------>SPI_SIGNAL_HVD,
};
 
struct spi_host_attrs {
<------>enum spi_signal_type signalling;
};
 
/* accessor functions */
#define spi_period(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->period)
#define spi_min_period(x) (((struct spi_transport_attrs *)&(x)->starget_data)->min_period)
#define spi_offset(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->offset)
#define spi_max_offset(x) (((struct spi_transport_attrs *)&(x)->starget_data)->max_offset)
#define spi_width(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->width)
#define spi_max_width(x) (((struct spi_transport_attrs *)&(x)->starget_data)->max_width)
#define spi_iu(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->iu)
#define spi_max_iu(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->max_iu)
#define spi_dt(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->dt)
#define spi_qas(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->qas)
#define spi_max_qas(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->max_qas)
#define spi_wr_flow(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->wr_flow)
#define spi_rd_strm(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->rd_strm)
#define spi_rti(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->rti)
#define spi_pcomp_en(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->pcomp_en)
#define spi_hold_mcs(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->hold_mcs)
#define spi_initial_dv(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->initial_dv)
#define spi_dv_pending(x) (((struct spi_transport_attrs *)&(x)->starget_data)->dv_pending)
 
#define spi_support_sync(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->support_sync)
#define spi_support_wide(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->support_wide)
#define spi_support_dt(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->support_dt)
#define spi_support_dt_only(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->support_dt_only)
#define spi_support_ius(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->support_ius)
#define spi_support_qas(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->support_qas)
 
#define spi_flags(x)	(((struct spi_transport_attrs *)&(x)->starget_data)->flags)
#define spi_signalling(h)	(((struct spi_host_attrs *)(h)->shost_data)->signalling)
 
 
 
/* The functions by which the transport class and the driver communicate */
struct spi_function_template {
<------>void	(*get_period)(struct scsi_target *);
<------>void	(*set_period)(struct scsi_target *, int);
<------>void	(*get_offset)(struct scsi_target *);
<------>void	(*set_offset)(struct scsi_target *, int);
<------>void	(*get_width)(struct scsi_target *);
<------>void	(*set_width)(struct scsi_target *, int);
<------>void	(*get_iu)(struct scsi_target *);
<------>void	(*set_iu)(struct scsi_target *, int);
<------>void	(*get_dt)(struct scsi_target *);
<------>void	(*set_dt)(struct scsi_target *, int);
<------>void	(*get_qas)(struct scsi_target *);
<------>void	(*set_qas)(struct scsi_target *, int);
<------>void	(*get_wr_flow)(struct scsi_target *);
<------>void	(*set_wr_flow)(struct scsi_target *, int);
<------>void	(*get_rd_strm)(struct scsi_target *);
<------>void	(*set_rd_strm)(struct scsi_target *, int);
<------>void	(*get_rti)(struct scsi_target *);
<------>void	(*set_rti)(struct scsi_target *, int);
<------>void	(*get_pcomp_en)(struct scsi_target *);
<------>void	(*set_pcomp_en)(struct scsi_target *, int);
<------>void	(*get_hold_mcs)(struct scsi_target *);
<------>void	(*set_hold_mcs)(struct scsi_target *, int);
<------>void	(*get_signalling)(struct Scsi_Host *);
<------>void	(*set_signalling)(struct Scsi_Host *, enum spi_signal_type);
<------>int	(*deny_binding)(struct scsi_target *);
<------>/* The driver sets these to tell the transport class it
<------> * wants the attributes displayed in sysfs.  If the show_ flag
<------> * is not set, the attribute will be private to the transport
<------> * class */
<------>unsigned long	show_period:1;
<------>unsigned long	show_offset:1;
<------>unsigned long	show_width:1;
<------>unsigned long	show_iu:1;
<------>unsigned long	show_dt:1;
<------>unsigned long	show_qas:1;
<------>unsigned long	show_wr_flow:1;
<------>unsigned long	show_rd_strm:1;
<------>unsigned long	show_rti:1;
<------>unsigned long	show_pcomp_en:1;
<------>unsigned long	show_hold_mcs:1;
};
 
struct scsi_transport_template *spi_attach_transport(struct spi_function_template *);
void spi_release_transport(struct scsi_transport_template *);
void spi_schedule_dv_device(struct scsi_device *);
void spi_dv_device(struct scsi_device *);
void spi_display_xfer_agreement(struct scsi_target *);
int spi_print_msg(const unsigned char *);
int spi_populate_width_msg(unsigned char *msg, int width);
int spi_populate_sync_msg(unsigned char *msg, int period, int offset);
int spi_populate_ppr_msg(unsigned char *msg, int period, int offset, int width,
<------><------>int options);
int spi_populate_tag_msg(unsigned char *msg, struct scsi_cmnd *cmd);
 
#endif /* SCSI_TRANSPORT_SPI_H */