Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 223 insertions, 0 deletions

diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
new file mode 100644
index 000000000..4498f845b
--- /dev/null
+++ b/include/scsi/scsi.h
@@ -0,0 +1,223 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * This header file contains public constants and structures used by
+ * the SCSI initiator code.
+ */
+#ifndef _SCSI_SCSI_H
+#define _SCSI_SCSI_H
+
+#include <linux/types.h>
+#include <linux/scatterlist.h>
+#include <linux/kernel.h>
+#include <scsi/scsi_common.h>
+#include <scsi/scsi_proto.h>
+#include <scsi/scsi_status.h>
+
+struct scsi_cmnd;
+
+enum scsi_timeouts {
+	SCSI_DEFAULT_EH_TIMEOUT		= 10 * HZ,
+};
+
+/*
+ * DIX-capable adapters effectively support infinite chaining for the
+ * protection information scatterlist
+ */
+#define SCSI_MAX_PROT_SG_SEGMENTS	0xFFFF
+
+/*
+ * Special value for scanning to specify scanning or rescanning of all
+ * possible channels, (target) ids, or luns on a given shost.
+ */
+#define SCAN_WILD_CARD	~0
+
+/*
+ * standard mode-select header prepended to all mode-select commands
+ */
+
+struct ccs_modesel_head {
+	__u8 _r1;			/* reserved */
+	__u8 medium;		/* device-specific medium type */
+	__u8 _r2;			/* reserved */
+	__u8 block_desc_length;	/* block descriptor length */
+	__u8 density;		/* device-specific density code */
+	__u8 number_blocks_hi;	/* number of blocks in this block desc */
+	__u8 number_blocks_med;
+	__u8 number_blocks_lo;
+	__u8 _r3;
+	__u8 block_length_hi;	/* block length for blocks in this desc */
+	__u8 block_length_med;
+	__u8 block_length_lo;
+};
+
+/*
+ * The Well Known LUNS (SAM-3) in our int representation of a LUN
+ */
+#define SCSI_W_LUN_BASE 0xc100
+#define SCSI_W_LUN_REPORT_LUNS (SCSI_W_LUN_BASE + 1)
+#define SCSI_W_LUN_ACCESS_CONTROL (SCSI_W_LUN_BASE + 2)
+#define SCSI_W_LUN_TARGET_LOG_PAGE (SCSI_W_LUN_BASE + 3)
+
+static inline int scsi_is_wlun(u64 lun)
+{
+	return (lun & 0xff00) == SCSI_W_LUN_BASE;
+}
+
+/**
+ * scsi_status_is_check_condition - check the status return.
+ *
+ * @status: the status passed up from the driver (including host and
+ *          driver components)
+ *
+ * This returns true if the status code is SAM_STAT_CHECK_CONDITION.
+ */
+static inline int scsi_status_is_check_condition(int status)
+{
+	if (status < 0)
+		return false;
+	status &= 0xfe;
+	return status == SAM_STAT_CHECK_CONDITION;
+}
+
+/*
+ *  Extended message codes.
+ */
+#define     EXTENDED_MODIFY_DATA_POINTER    0x00
+#define     EXTENDED_SDTR                   0x01
+#define     EXTENDED_EXTENDED_IDENTIFY      0x02    /* SCSI-I only */
+#define     EXTENDED_WDTR                   0x03
+#define     EXTENDED_PPR                    0x04
+#define     EXTENDED_MODIFY_BIDI_DATA_PTR   0x05
+
+/*
+ * Internal return values.
+ */
+enum scsi_disposition {
+	NEEDS_RETRY		= 0x2001,
+	SUCCESS			= 0x2002,
+	FAILED			= 0x2003,
+	QUEUED			= 0x2004,
+	SOFT_ERROR		= 0x2005,
+	ADD_TO_MLQUEUE		= 0x2006,
+	TIMEOUT_ERROR		= 0x2007,
+	SCSI_RETURN_NOT_HANDLED	= 0x2008,
+	FAST_IO_FAIL		= 0x2009,
+};
+
+/*
+ * Midlevel queue return values.
+ */
+#define SCSI_MLQUEUE_HOST_BUSY   0x1055
+#define SCSI_MLQUEUE_DEVICE_BUSY 0x1056
+#define SCSI_MLQUEUE_EH_RETRY    0x1057
+#define SCSI_MLQUEUE_TARGET_BUSY 0x1058
+
+/*
+ *  Use these to separate status msg and our bytes
+ *
+ *  These are set by:
+ *
+ *      status byte = set from target device
+ *      msg_byte    (unused)
+ *      host_byte   = set by low-level driver to indicate status.
+ */
+#define status_byte(result) (result & 0xff)
+#define host_byte(result)   (((result) >> 16) & 0xff)
+
+#define sense_class(sense)  (((sense) >> 4) & 0x7)
+#define sense_error(sense)  ((sense) & 0xf)
+#define sense_valid(sense)  ((sense) & 0x80)
+
+/*
+ * default timeouts
+*/
+#define FORMAT_UNIT_TIMEOUT		(2 * 60 * 60 * HZ)
+#define START_STOP_TIMEOUT		(60 * HZ)
+#define MOVE_MEDIUM_TIMEOUT		(5 * 60 * HZ)
+#define READ_ELEMENT_STATUS_TIMEOUT	(5 * 60 * HZ)
+#define READ_DEFECT_DATA_TIMEOUT	(60 * HZ )
+
+
+#define IDENTIFY_BASE       0x80
+#define IDENTIFY(can_disconnect, lun)   (IDENTIFY_BASE |\
+		     ((can_disconnect) ?  0x40 : 0) |\
+		     ((lun) & 0x07))
+
+/*
+ *  struct scsi_device::scsi_level values. For SCSI devices other than those
+ *  prior to SCSI-2 (i.e. over 12 years old) this value is (resp[2] + 1)
+ *  where "resp" is a byte array of the response to an INQUIRY. The scsi_level
+ *  variable is visible to the user via sysfs.
+ */
+
+#define SCSI_UNKNOWN    0
+#define SCSI_1          1
+#define SCSI_1_CCS      2
+#define SCSI_2          3
+#define SCSI_3          4        /* SPC */
+#define SCSI_SPC_2      5
+#define SCSI_SPC_3      6
+#define SCSI_SPC_4	7
+#define SCSI_SPC_5	8
+#define SCSI_SPC_6	14
+
+/*
+ * INQ PERIPHERAL QUALIFIERS
+ */
+#define SCSI_INQ_PQ_CON         0x00
+#define SCSI_INQ_PQ_NOT_CON     0x01
+#define SCSI_INQ_PQ_NOT_CAP     0x03
+
+
+/*
+ * Here are some scsi specific ioctl commands which are sometimes useful.
+ *
+ * Note that include/linux/cdrom.h also defines IOCTL 0x5300 - 0x5395
+ */
+
+/* Used to obtain PUN and LUN info.  Conflicts with CDROMAUDIOBUFSIZ */
+#define SCSI_IOCTL_GET_IDLUN		0x5382
+
+/* 0x5383 and 0x5384 were used for SCSI_IOCTL_TAGGED_{ENABLE,DISABLE} */
+
+/* Used to obtain the host number of a device. */
+#define SCSI_IOCTL_PROBE_HOST		0x5385
+
+/* Used to obtain the bus number for a device */
+#define SCSI_IOCTL_GET_BUS_NUMBER	0x5386
+
+/* Used to obtain the PCI location of a device */
+#define SCSI_IOCTL_GET_PCI		0x5387
+
+/** scsi_status_is_good - check the status return.
+ *
+ * @status: the status passed up from the driver (including host and
+ *          driver components)
+ *
+ * This returns true for known good conditions that may be treated as
+ * command completed normally
+ */
+static inline bool scsi_status_is_good(int status)
+{
+	if (status < 0)
+		return false;
+
+	if (host_byte(status) == DID_NO_CONNECT)
+		return false;
+
+	/*
+	 * FIXME: bit0 is listed as reserved in SCSI-2, but is
+	 * significant in SCSI-3.  For now, we follow the SCSI-2
+	 * behaviour and ignore reserved bits.
+	 */
+	status &= 0xfe;
+	return ((status == SAM_STAT_GOOD) ||
+		(status == SAM_STAT_CONDITION_MET) ||
+		/* Next two "intermediate" statuses are obsolete in SAM-4 */
+		(status == SAM_STAT_INTERMEDIATE) ||
+		(status == SAM_STAT_INTERMEDIATE_CONDITION_MET) ||
+		/* FIXME: this is obsolete in SAM-3 */
+		(status == SAM_STAT_COMMAND_TERMINATED));
+}
+
+#endif /* _SCSI_SCSI_H */