[GitHub/LineageOS/android_kernel_motorola_exynos9610.git] / drivers / scsi / sd.h

#ifndef _SCSI_DISK_H
#define _SCSI_DISK_H

/*
 * More than enough for everybody ;)  The huge number of majors
 * is a leftover from 16bit dev_t days, we don't really need that
 * much numberspace.
 */
#define SD_MAJORS	16

/*
 * Time out in seconds for disks and Magneto-opticals (which are slower).
 */
#define SD_TIMEOUT		(30 * HZ)
#define SD_MOD_TIMEOUT		(75 * HZ)
/*
 * Flush timeout is a multiplier over the standard device timeout which is
 * user modifiable via sysfs but initially set to SD_TIMEOUT
 */
#define SD_FLUSH_TIMEOUT_MULTIPLIER	2
#define SD_WRITE_SAME_TIMEOUT	(120 * HZ)

/*
 * Number of allowed retries
 */
#define SD_MAX_RETRIES		5
#define SD_PASSTHROUGH_RETRIES	1
#define SD_MAX_MEDIUM_TIMEOUTS	2

/*
 * Size of the initial data buffer for mode and read capacity data
 */
#define SD_BUF_SIZE		512

/*
 * Number of sectors at the end of the device to avoid multi-sector
 * accesses to in the case of last_sector_bug
 */
#define SD_LAST_BUGGY_SECTORS	8

enum {
	SD_EXT_CDB_SIZE = 32,	/* Extended CDB size */
	SD_MEMPOOL_SIZE = 2,	/* CDB pool size */
};

enum {
	SD_DEF_XFER_BLOCKS = 0xffff,
	SD_MAX_XFER_BLOCKS = 0xffffffff,
	SD_MAX_WS10_BLOCKS = 0xffff,
	SD_MAX_WS16_BLOCKS = 0x7fffff,
};

enum {
	SD_LBP_FULL = 0,	/* Full logical block provisioning */
	SD_LBP_UNMAP,		/* Use UNMAP command */
	SD_LBP_WS16,		/* Use WRITE SAME(16) with UNMAP bit */
	SD_LBP_WS10,		/* Use WRITE SAME(10) with UNMAP bit */
	SD_LBP_ZERO,		/* Use WRITE SAME(10) with zero payload */
	SD_LBP_DISABLE,		/* Discard disabled due to failed cmd */
};

enum {
	SD_ZERO_WRITE = 0,	/* Use WRITE(10/16) command */
	SD_ZERO_WS,		/* Use WRITE SAME(10/16) command */
	SD_ZERO_WS16_UNMAP,	/* Use WRITE SAME(16) with UNMAP */
	SD_ZERO_WS10_UNMAP,	/* Use WRITE SAME(10) with UNMAP */
};

struct scsi_disk {
	struct scsi_driver *driver;	/* always &sd_template */
	struct scsi_device *device;
	struct device	dev;
	struct gendisk	*disk;
#ifdef CONFIG_BLK_DEV_ZONED
	unsigned int	nr_zones;
	unsigned int	zone_blocks;
	unsigned int	zone_shift;
	unsigned long	*zones_wlock;
	unsigned int	zones_optimal_open;
	unsigned int	zones_optimal_nonseq;
	unsigned int	zones_max_open;
#endif
	atomic_t	openers;
	sector_t	capacity;	/* size in logical blocks */
	u32		max_xfer_blocks;
	u32		opt_xfer_blocks;
	u32		max_ws_blocks;
	u32		max_unmap_blocks;
	u32		unmap_granularity;
	u32		unmap_alignment;
	u32		index;
	unsigned int	physical_block_size;
	unsigned int	max_medium_access_timeouts;
	unsigned int	medium_access_timed_out;
	u8		media_present;
	u8		write_prot;
	u8		protection_type;/* Data Integrity Field */
	u8		provisioning_mode;
	u8		zeroing_mode;
	unsigned	ATO : 1;	/* state of disk ATO bit */
	unsigned	cache_override : 1; /* temp override of WCE,RCD */
	unsigned	WCE : 1;	/* state of disk WCE bit */
	unsigned	RCD : 1;	/* state of disk RCD bit, unused */
	unsigned	DPOFUA : 1;	/* state of disk DPOFUA bit */
	unsigned	first_scan : 1;
	unsigned	lbpme : 1;
	unsigned	lbprz : 1;
	unsigned	lbpu : 1;
	unsigned	lbpws : 1;
	unsigned	lbpws10 : 1;
	unsigned	lbpvpd : 1;
	unsigned	ws10 : 1;
	unsigned	ws16 : 1;
	unsigned	rc_basis: 2;
	unsigned	zoned: 2;
	unsigned	urswrz : 1;
	unsigned	ignore_medium_access_errors : 1;
};
#define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev)

static inline struct scsi_disk *scsi_disk(struct gendisk *disk)
{
	return container_of(disk->private_data, struct scsi_disk, driver);
}

#define sd_printk(prefix, sdsk, fmt, a...)				\
        (sdsk)->disk ?							\
	      sdev_prefix_printk(prefix, (sdsk)->device,		\
				 (sdsk)->disk->disk_name, fmt, ##a) :	\
	      sdev_printk(prefix, (sdsk)->device, fmt, ##a)

#define sd_first_printk(prefix, sdsk, fmt, a...)			\
	do {								\
		if ((sdkp)->first_scan)					\
			sd_printk(prefix, sdsk, fmt, ##a);		\
	} while (0)

static inline int scsi_medium_access_command(struct scsi_cmnd *scmd)
{
	switch (scmd->cmnd[0]) {
	case READ_6:
	case READ_10:
	case READ_12:
	case READ_16:
	case SYNCHRONIZE_CACHE:
	case VERIFY:
	case VERIFY_12:
	case VERIFY_16:
	case WRITE_6:
	case WRITE_10:
	case WRITE_12:
	case WRITE_16:
	case WRITE_SAME:
	case WRITE_SAME_16:
	case UNMAP:
		return 1;
	case VARIABLE_LENGTH_CMD:
		switch (scmd->cmnd[9]) {
		case READ_32:
		case VERIFY_32:
		case WRITE_32:
		case WRITE_SAME_32:
			return 1;
		}
	}

	return 0;
}

static inline sector_t logical_to_sectors(struct scsi_device *sdev, sector_t blocks)
{
	return blocks << (ilog2(sdev->sector_size) - 9);
}

static inline unsigned int logical_to_bytes(struct scsi_device *sdev, sector_t blocks)
{
	return blocks * sdev->sector_size;
}

static inline sector_t bytes_to_logical(struct scsi_device *sdev, unsigned int bytes)
{
	return bytes >> ilog2(sdev->sector_size);
}

static inline sector_t sectors_to_logical(struct scsi_device *sdev, sector_t sector)
{
	return sector >> (ilog2(sdev->sector_size) - 9);
}

/*
 * Look up the DIX operation based on whether the command is read or
 * write and whether dix and dif are enabled.
 */
static inline unsigned int sd_prot_op(bool write, bool dix, bool dif)
{
	/* Lookup table: bit 2 (write), bit 1 (dix), bit 0 (dif) */
	const unsigned int ops[] = {	/* wrt dix dif */
		SCSI_PROT_NORMAL,	/*  0	0   0  */
		SCSI_PROT_READ_STRIP,	/*  0	0   1  */
		SCSI_PROT_READ_INSERT,	/*  0	1   0  */
		SCSI_PROT_READ_PASS,	/*  0	1   1  */
		SCSI_PROT_NORMAL,	/*  1	0   0  */
		SCSI_PROT_WRITE_INSERT, /*  1	0   1  */
		SCSI_PROT_WRITE_STRIP,	/*  1	1   0  */
		SCSI_PROT_WRITE_PASS,	/*  1	1   1  */
	};

	return ops[write << 2 | dix << 1 | dif];
}

/*
 * Returns a mask of the protection flags that are valid for a given DIX
 * operation.
 */
static inline unsigned int sd_prot_flag_mask(unsigned int prot_op)
{
	const unsigned int flag_mask[] = {
		[SCSI_PROT_NORMAL]		= 0,

		[SCSI_PROT_READ_STRIP]		= SCSI_PROT_TRANSFER_PI |
						  SCSI_PROT_GUARD_CHECK |
						  SCSI_PROT_REF_CHECK |
						  SCSI_PROT_REF_INCREMENT,

		[SCSI_PROT_READ_INSERT]		= SCSI_PROT_REF_INCREMENT |
						  SCSI_PROT_IP_CHECKSUM,

		[SCSI_PROT_READ_PASS]		= SCSI_PROT_TRANSFER_PI |
						  SCSI_PROT_GUARD_CHECK |
						  SCSI_PROT_REF_CHECK |
						  SCSI_PROT_REF_INCREMENT |
						  SCSI_PROT_IP_CHECKSUM,

		[SCSI_PROT_WRITE_INSERT]	= SCSI_PROT_TRANSFER_PI |
						  SCSI_PROT_REF_INCREMENT,

		[SCSI_PROT_WRITE_STRIP]		= SCSI_PROT_GUARD_CHECK |
						  SCSI_PROT_REF_CHECK |
						  SCSI_PROT_REF_INCREMENT |
						  SCSI_PROT_IP_CHECKSUM,

		[SCSI_PROT_WRITE_PASS]		= SCSI_PROT_TRANSFER_PI |
						  SCSI_PROT_GUARD_CHECK |
						  SCSI_PROT_REF_CHECK |
						  SCSI_PROT_REF_INCREMENT |
						  SCSI_PROT_IP_CHECKSUM,
	};

	return flag_mask[prot_op];
}

#ifdef CONFIG_BLK_DEV_INTEGRITY

extern void sd_dif_config_host(struct scsi_disk *);
extern void sd_dif_prepare(struct scsi_cmnd *scmd);
extern void sd_dif_complete(struct scsi_cmnd *, unsigned int);

#else /* CONFIG_BLK_DEV_INTEGRITY */

static inline void sd_dif_config_host(struct scsi_disk *disk)
{
}
static inline int sd_dif_prepare(struct scsi_cmnd *scmd)
{
	return 0;
}
static inline void sd_dif_complete(struct scsi_cmnd *cmd, unsigned int a)
{
}

#endif /* CONFIG_BLK_DEV_INTEGRITY */

static inline int sd_is_zoned(struct scsi_disk *sdkp)
{
	return sdkp->zoned == 1 || sdkp->device->type == TYPE_ZBC;
}

#ifdef CONFIG_BLK_DEV_ZONED

extern int sd_zbc_read_zones(struct scsi_disk *sdkp, unsigned char *buffer);
extern void sd_zbc_remove(struct scsi_disk *sdkp);
extern void sd_zbc_print_zones(struct scsi_disk *sdkp);
extern int sd_zbc_write_lock_zone(struct scsi_cmnd *cmd);
extern void sd_zbc_write_unlock_zone(struct scsi_cmnd *cmd);
extern int sd_zbc_setup_report_cmnd(struct scsi_cmnd *cmd);
extern int sd_zbc_setup_reset_cmnd(struct scsi_cmnd *cmd);
extern void sd_zbc_complete(struct scsi_cmnd *cmd, unsigned int good_bytes,
			    struct scsi_sense_hdr *sshdr);

#else /* CONFIG_BLK_DEV_ZONED */

static inline int sd_zbc_read_zones(struct scsi_disk *sdkp,
				    unsigned char *buf)
{
	return 0;
}

static inline void sd_zbc_remove(struct scsi_disk *sdkp) {}

static inline void sd_zbc_print_zones(struct scsi_disk *sdkp) {}

static inline int sd_zbc_write_lock_zone(struct scsi_cmnd *cmd)
{
	/* Let the drive fail requests */
	return BLKPREP_OK;
}

static inline void sd_zbc_write_unlock_zone(struct scsi_cmnd *cmd) {}

static inline int sd_zbc_setup_report_cmnd(struct scsi_cmnd *cmd)
{
	return BLKPREP_INVALID;
}

static inline int sd_zbc_setup_reset_cmnd(struct scsi_cmnd *cmd)
{
	return BLKPREP_INVALID;
}

static inline void sd_zbc_complete(struct scsi_cmnd *cmd,
				   unsigned int good_bytes,
				   struct scsi_sense_hdr *sshdr) {}

#endif /* CONFIG_BLK_DEV_ZONED */

#endif /* _SCSI_DISK_H */
Commit	Line	Data
e73aec82 MP	1	#ifndef _SCSI_DISK_H
	2	#define _SCSI_DISK_H
	3
	4	/*
	5	* More than enough for everybody ;) The huge number of majors
	6	* is a leftover from 16bit dev_t days, we don't really need that
	7	* much numberspace.
	8	*/
	9	#define SD_MAJORS 16
	10
e73aec82 MP	11	/*
	12	* Time out in seconds for disks and Magneto-opticals (which are slower).
	13	*/
	14	#define SD_TIMEOUT (30 * HZ)
	15	#define SD_MOD_TIMEOUT (75 * HZ)
7e660100 JB	16	/*
	17	* Flush timeout is a multiplier over the standard device timeout which is
	18	* user modifiable via sysfs but initially set to SD_TIMEOUT
	19	*/
	20	#define SD_FLUSH_TIMEOUT_MULTIPLIER 2
5db44863	21	#define SD_WRITE_SAME_TIMEOUT (120 * HZ)
e73aec82 MP	22
	23	/*
	24	* Number of allowed retries
	25	*/
	26	#define SD_MAX_RETRIES 5
	27	#define SD_PASSTHROUGH_RETRIES 1
18a4d0a2	28	#define SD_MAX_MEDIUM_TIMEOUTS 2
e73aec82 MP	29
	30	/*
	31	* Size of the initial data buffer for mode and read capacity data
	32	*/
	33	#define SD_BUF_SIZE 512
	34
18351070 LT	35	/*
	36	* Number of sectors at the end of the device to avoid multi-sector
	37	* accesses to in the case of last_sector_bug
	38	*/
	39	#define SD_LAST_BUGGY_SECTORS 8
	40
4e7392ec MP	41	enum {
	42	SD_EXT_CDB_SIZE = 32, /* Extended CDB size */
	43	SD_MEMPOOL_SIZE = 2, /* CDB pool size */
	44	};
	45
5db44863	46	enum {
bcdb247c MP	47	SD_DEF_XFER_BLOCKS = 0xffff,
bcdb247c MP	48	SD_MAX_XFER_BLOCKS = 0xffffffff,
5db44863 MP	49	SD_MAX_WS10_BLOCKS = 0xffff,
	50	SD_MAX_WS16_BLOCKS = 0x7fffff,
	51	};
	52
c98a0eb0 MP	53	enum {
	54	SD_LBP_FULL = 0, /* Full logical block provisioning */
	55	SD_LBP_UNMAP, /* Use UNMAP command */
	56	SD_LBP_WS16, /* Use WRITE SAME(16) with UNMAP bit */
	57	SD_LBP_WS10, /* Use WRITE SAME(10) with UNMAP bit */
	58	SD_LBP_ZERO, /* Use WRITE SAME(10) with zero payload */
	59	SD_LBP_DISABLE, /* Discard disabled due to failed cmd */
	60	};
	61
e6bd9312 MP	62	enum {
	63	SD_ZERO_WRITE = 0, /* Use WRITE(10/16) command */
	64	SD_ZERO_WS, /* Use WRITE SAME(10/16) command */
	65	SD_ZERO_WS16_UNMAP, /* Use WRITE SAME(16) with UNMAP */
	66	SD_ZERO_WS10_UNMAP, /* Use WRITE SAME(10) with UNMAP */
	67	};
	68
e73aec82 MP	69	struct scsi_disk {
	70	struct scsi_driver driver; / always &sd_template */
	71	struct scsi_device *device;
ee959b00	72	struct device dev;
e73aec82	73	struct gendisk *disk;
89d94756 HR	74	#ifdef CONFIG_BLK_DEV_ZONED
	75	unsigned int nr_zones;
	76	unsigned int zone_blocks;
	77	unsigned int zone_shift;
	78	unsigned long *zones_wlock;
	79	unsigned int zones_optimal_open;
	80	unsigned int zones_optimal_nonseq;
	81	unsigned int zones_max_open;
	82	#endif
409f3499	83	atomic_t openers;
f08bb1e0	84	sector_t capacity; /* size in logical blocks */
bcdb247c	85	u32 max_xfer_blocks;
ca369d51	86	u32 opt_xfer_blocks;
c98a0eb0 MP	87	u32 max_ws_blocks;
	88	u32 max_unmap_blocks;
	89	u32 unmap_granularity;
	90	u32 unmap_alignment;
e73aec82	91	u32 index;
526f7c79	92	unsigned int physical_block_size;
18a4d0a2 MP	93	unsigned int max_medium_access_timeouts;
18a4d0a2 MP	94	unsigned int medium_access_timed_out;
e73aec82 MP	95	u8 media_present;
e73aec82 MP	96	u8 write_prot;
e0597d70	97	u8 protection_type;/* Data Integrity Field */
c98a0eb0	98	u8 provisioning_mode;
e6bd9312	99	u8 zeroing_mode;
e0597d70	100	unsigned ATO : 1; /* state of disk ATO bit */
39c60a09	101	unsigned cache_override : 1; /* temp override of WCE,RCD */
e73aec82 MP	102	unsigned WCE : 1; /* state of disk WCE bit */
	103	unsigned RCD : 1; /* state of disk RCD bit, unused */
	104	unsigned DPOFUA : 1; /* state of disk DPOFUA bit */
70a9b873	105	unsigned first_scan : 1;
c98a0eb0 MP	106	unsigned lbpme : 1;
	107	unsigned lbprz : 1;
	108	unsigned lbpu : 1;
	109	unsigned lbpws : 1;
	110	unsigned lbpws10 : 1;
	111	unsigned lbpvpd : 1;
66c28f97	112	unsigned ws10 : 1;
5db44863	113	unsigned ws16 : 1;
89d94756 HR	114	unsigned rc_basis: 2;
	115	unsigned zoned: 2;
	116	unsigned urswrz : 1;
7a38dc0b	117	unsigned ignore_medium_access_errors : 1;
e73aec82	118	};
ee959b00	119	#define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev)
e73aec82	120
5b635da1 MP	121	static inline struct scsi_disk scsi_disk(struct gendisk disk)
	122	{
	123	return container_of(disk->private_data, struct scsi_disk, driver);
	124	}
	125
e73aec82 MP	126	#define sd_printk(prefix, sdsk, fmt, a...) \
e73aec82 MP	127	(sdsk)->disk ? \
22e0d994 HR	128	sdev_prefix_printk(prefix, (sdsk)->device, \
	129	(sdsk)->disk->disk_name, fmt, ##a) : \
	130	sdev_printk(prefix, (sdsk)->device, fmt, ##a)
e73aec82	131
b2bff6ce MP	132	#define sd_first_printk(prefix, sdsk, fmt, a...) \
	133	do { \
	134	if ((sdkp)->first_scan) \
	135	sd_printk(prefix, sdsk, fmt, ##a); \
	136	} while (0)
	137
18a4d0a2 MP	138	static inline int scsi_medium_access_command(struct scsi_cmnd *scmd)
	139	{
	140	switch (scmd->cmnd[0]) {
	141	case READ_6:
	142	case READ_10:
	143	case READ_12:
	144	case READ_16:
	145	case SYNCHRONIZE_CACHE:
	146	case VERIFY:
	147	case VERIFY_12:
	148	case VERIFY_16:
	149	case WRITE_6:
	150	case WRITE_10:
	151	case WRITE_12:
	152	case WRITE_16:
	153	case WRITE_SAME:
	154	case WRITE_SAME_16:
	155	case UNMAP:
	156	return 1;
	157	case VARIABLE_LENGTH_CMD:
	158	switch (scmd->cmnd[9]) {
	159	case READ_32:
	160	case VERIFY_32:
	161	case WRITE_32:
	162	case WRITE_SAME_32:
	163	return 1;
	164	}
	165	}
	166
	167	return 0;
	168	}
	169
f08bb1e0 MP	170	static inline sector_t logical_to_sectors(struct scsi_device *sdev, sector_t blocks)
	171	{
	172	return blocks << (ilog2(sdev->sector_size) - 9);
	173	}
	174
6b7e9cde MP	175	static inline unsigned int logical_to_bytes(struct scsi_device *sdev, sector_t blocks)
	176	{
	177	return blocks * sdev->sector_size;
	178	}
	179
6eadc612 DLM	180	static inline sector_t bytes_to_logical(struct scsi_device *sdev, unsigned int bytes)
	181	{
	182	return bytes >> ilog2(sdev->sector_size);
	183	}
	184
89d94756 HR	185	static inline sector_t sectors_to_logical(struct scsi_device *sdev, sector_t sector)
	186	{
	187	return sector >> (ilog2(sdev->sector_size) - 9);
	188	}
	189
c611529e MP	190	/*
	191	* Look up the DIX operation based on whether the command is read or
	192	* write and whether dix and dif are enabled.
	193	*/
	194	static inline unsigned int sd_prot_op(bool write, bool dix, bool dif)
	195	{
	196	/* Lookup table: bit 2 (write), bit 1 (dix), bit 0 (dif) */
	197	const unsigned int ops[] = { /* wrt dix dif */
	198	SCSI_PROT_NORMAL, /* 0 0 0 */
	199	SCSI_PROT_READ_STRIP, /* 0 0 1 */
	200	SCSI_PROT_READ_INSERT, /* 0 1 0 */
	201	SCSI_PROT_READ_PASS, /* 0 1 1 */
	202	SCSI_PROT_NORMAL, /* 1 0 0 */
	203	SCSI_PROT_WRITE_INSERT, /* 1 0 1 */
	204	SCSI_PROT_WRITE_STRIP, /* 1 1 0 */
	205	SCSI_PROT_WRITE_PASS, /* 1 1 1 */
	206	};
	207
	208	return ops[write << 2 \| dix << 1 \| dif];
	209	}
	210
	211	/*
	212	* Returns a mask of the protection flags that are valid for a given DIX
	213	* operation.
	214	*/
	215	static inline unsigned int sd_prot_flag_mask(unsigned int prot_op)
	216	{
	217	const unsigned int flag_mask[] = {
	218	[SCSI_PROT_NORMAL] = 0,
	219
	220	[SCSI_PROT_READ_STRIP] = SCSI_PROT_TRANSFER_PI \|
	221	SCSI_PROT_GUARD_CHECK \|
	222	SCSI_PROT_REF_CHECK \|
	223	SCSI_PROT_REF_INCREMENT,
	224
	225	[SCSI_PROT_READ_INSERT] = SCSI_PROT_REF_INCREMENT \|
	226	SCSI_PROT_IP_CHECKSUM,
	227
	228	[SCSI_PROT_READ_PASS] = SCSI_PROT_TRANSFER_PI \|
	229	SCSI_PROT_GUARD_CHECK \|
	230	SCSI_PROT_REF_CHECK \|
	231	SCSI_PROT_REF_INCREMENT \|
	232	SCSI_PROT_IP_CHECKSUM,
	233
	234	[SCSI_PROT_WRITE_INSERT] = SCSI_PROT_TRANSFER_PI \|
	235	SCSI_PROT_REF_INCREMENT,
	236
	237	[SCSI_PROT_WRITE_STRIP] = SCSI_PROT_GUARD_CHECK \|
	238	SCSI_PROT_REF_CHECK \|
	239	SCSI_PROT_REF_INCREMENT \|
	240	SCSI_PROT_IP_CHECKSUM,
	241
	242	[SCSI_PROT_WRITE_PASS] = SCSI_PROT_TRANSFER_PI \|
	243	SCSI_PROT_GUARD_CHECK \|
	244	SCSI_PROT_REF_CHECK \|
	245	SCSI_PROT_REF_INCREMENT \|
	246	SCSI_PROT_IP_CHECKSUM,
	247	};
	248
	249	return flag_mask[prot_op];
	250	}
	251
4c393e6e	252	#ifdef CONFIG_BLK_DEV_INTEGRITY
af55ff67	253
af55ff67	254	extern void sd_dif_config_host(struct scsi_disk *);
c611529e	255	extern void sd_dif_prepare(struct scsi_cmnd *scmd);
af55ff67 MP	256	extern void sd_dif_complete(struct scsi_cmnd *, unsigned int);
	257
	258	#else /* CONFIG_BLK_DEV_INTEGRITY */
	259
4c393e6e JB	260	static inline void sd_dif_config_host(struct scsi_disk *disk)
	261	{
	262	}
c611529e	263	static inline int sd_dif_prepare(struct scsi_cmnd *scmd)
4c393e6e JB	264	{
	265	return 0;
	266	}
	267	static inline void sd_dif_complete(struct scsi_cmnd *cmd, unsigned int a)
	268	{
	269	}
af55ff67 MP	270
	271	#endif /* CONFIG_BLK_DEV_INTEGRITY */
	272
89d94756 HR	273	static inline int sd_is_zoned(struct scsi_disk *sdkp)
	274	{
	275	return sdkp->zoned == 1 \|\| sdkp->device->type == TYPE_ZBC;
	276	}
	277
	278	#ifdef CONFIG_BLK_DEV_ZONED
	279
	280	extern int sd_zbc_read_zones(struct scsi_disk sdkp, unsigned char buffer);
	281	extern void sd_zbc_remove(struct scsi_disk *sdkp);
	282	extern void sd_zbc_print_zones(struct scsi_disk *sdkp);
a90dfdc2 DLM	283	extern int sd_zbc_write_lock_zone(struct scsi_cmnd *cmd);
a90dfdc2 DLM	284	extern void sd_zbc_write_unlock_zone(struct scsi_cmnd *cmd);
89d94756 HR	285	extern int sd_zbc_setup_report_cmnd(struct scsi_cmnd *cmd);
	286	extern int sd_zbc_setup_reset_cmnd(struct scsi_cmnd *cmd);
	287	extern void sd_zbc_complete(struct scsi_cmnd *cmd, unsigned int good_bytes,
	288	struct scsi_sense_hdr *sshdr);
	289
	290	#else /* CONFIG_BLK_DEV_ZONED */
	291
	292	static inline int sd_zbc_read_zones(struct scsi_disk *sdkp,
	293	unsigned char *buf)
	294	{
	295	return 0;
	296	}
	297
	298	static inline void sd_zbc_remove(struct scsi_disk *sdkp) {}
	299
	300	static inline void sd_zbc_print_zones(struct scsi_disk *sdkp) {}
	301
a90dfdc2	302	static inline int sd_zbc_write_lock_zone(struct scsi_cmnd *cmd)
89d94756 HR	303	{
	304	/* Let the drive fail requests */
	305	return BLKPREP_OK;
	306	}
	307
a90dfdc2	308	static inline void sd_zbc_write_unlock_zone(struct scsi_cmnd *cmd) {}
89d94756 HR	309
	310	static inline int sd_zbc_setup_report_cmnd(struct scsi_cmnd *cmd)
	311	{
	312	return BLKPREP_INVALID;
	313	}
	314
	315	static inline int sd_zbc_setup_reset_cmnd(struct scsi_cmnd *cmd)
	316	{
	317	return BLKPREP_INVALID;
	318	}
	319
	320	static inline void sd_zbc_complete(struct scsi_cmnd *cmd,
	321	unsigned int good_bytes,
	322	struct scsi_sense_hdr *sshdr) {}
	323
	324	#endif /* CONFIG_BLK_DEV_ZONED */
	325
e73aec82	326	#endif /* _SCSI_DISK_H */