mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-24 21:54:01 +00:00
b630f8b3ae
The migration deadline for moving to DM_SCSI was v2023.04. A further reminder was sent out in August 2023 to the remaining platforms that had not migrated already, and that a few more over the line (or configs deleted). With this commit we: - Rename CONFIG_DM_SCSI to CONFIG_SCSI. - Remove all of the non-DM SCSI code. This includes removing other legacy symbols and code and removes some legacy non-DM AHCI code. - Some platforms that had previously been DM_SCSI=y && SCSI=n are now fully migrated to DM_SCSI as a few corner cases in the code assumed DM_SCSI=y meant SCSI=y. Signed-off-by: Tom Rini <trini@konsulko.com>
364 lines
10 KiB
C
364 lines
10 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* (C) Copyright 2001
|
|
* Denis Peter, MPL AG Switzerland
|
|
*/
|
|
#ifndef _SCSI_H
|
|
#define _SCSI_H
|
|
|
|
#include <asm/cache.h>
|
|
#include <bouncebuf.h>
|
|
#include <linux/dma-direction.h>
|
|
|
|
struct udevice;
|
|
|
|
/**
|
|
* struct scsi_cmd - information about a SCSI command to be processed
|
|
*
|
|
* @cmd: command
|
|
* @sense_buf: for request sense
|
|
* @status: SCSI Status
|
|
* @target: Target ID
|
|
* @lun: Target LUN
|
|
* @cmdlen: command len
|
|
* @datalen: Total data length
|
|
* @pdata: pointer to data
|
|
* @msgout: Messge out buffer (NOT USED)
|
|
* @msgin: Message in buffer
|
|
* @sensecmdlen: Sense command len
|
|
* @sensedatalen: Sense data len
|
|
* @sensecmd: Sense command
|
|
* @contr_stat: Controller Status
|
|
* @trans_bytes: tranfered bytes
|
|
* @priv: Private value
|
|
* @dma_dir: Direction of data structure
|
|
*/
|
|
struct scsi_cmd {
|
|
unsigned char cmd[16];
|
|
unsigned char sense_buf[64]
|
|
__attribute__((aligned(ARCH_DMA_MINALIGN)));
|
|
unsigned char status;
|
|
unsigned char target;
|
|
unsigned char lun;
|
|
unsigned char cmdlen;
|
|
unsigned long datalen;
|
|
unsigned char *pdata;
|
|
unsigned char msgout[12];
|
|
unsigned char msgin[12];
|
|
unsigned char sensecmdlen;
|
|
unsigned long sensedatalen;
|
|
unsigned char sensecmd[6];
|
|
unsigned long contr_stat;
|
|
unsigned long trans_bytes;
|
|
|
|
unsigned int priv;
|
|
enum dma_data_direction dma_dir;
|
|
};
|
|
|
|
/*-----------------------------------------------------------
|
|
**
|
|
** SCSI constants.
|
|
**
|
|
**-----------------------------------------------------------
|
|
*/
|
|
|
|
/*
|
|
** Messages
|
|
*/
|
|
|
|
#define M_COMPLETE (0x00)
|
|
#define M_EXTENDED (0x01)
|
|
#define M_SAVE_DP (0x02)
|
|
#define M_RESTORE_DP (0x03)
|
|
#define M_DISCONNECT (0x04)
|
|
#define M_ID_ERROR (0x05)
|
|
#define M_ABORT (0x06)
|
|
#define M_REJECT (0x07)
|
|
#define M_NOOP (0x08)
|
|
#define M_PARITY (0x09)
|
|
#define M_LCOMPLETE (0x0a)
|
|
#define M_FCOMPLETE (0x0b)
|
|
#define M_RESET (0x0c)
|
|
#define M_ABORT_TAG (0x0d)
|
|
#define M_CLEAR_QUEUE (0x0e)
|
|
#define M_INIT_REC (0x0f)
|
|
#define M_REL_REC (0x10)
|
|
#define M_TERMINATE (0x11)
|
|
#define M_SIMPLE_TAG (0x20)
|
|
#define M_HEAD_TAG (0x21)
|
|
#define M_ORDERED_TAG (0x22)
|
|
#define M_IGN_RESIDUE (0x23)
|
|
#define M_IDENTIFY (0x80)
|
|
|
|
#define M_X_MODIFY_DP (0x00)
|
|
#define M_X_SYNC_REQ (0x01)
|
|
#define M_X_WIDE_REQ (0x03)
|
|
#define M_X_PPR_REQ (0x04)
|
|
|
|
|
|
/*
|
|
** Status
|
|
*/
|
|
|
|
#define S_GOOD (0x00)
|
|
#define S_CHECK_COND (0x02)
|
|
#define S_COND_MET (0x04)
|
|
#define S_BUSY (0x08)
|
|
#define S_INT (0x10)
|
|
#define S_INT_COND_MET (0x14)
|
|
#define S_CONFLICT (0x18)
|
|
#define S_TERMINATED (0x20)
|
|
#define S_QUEUE_FULL (0x28)
|
|
#define S_ILLEGAL (0xff)
|
|
#define S_SENSE (0x80)
|
|
|
|
/*
|
|
* Sense_keys
|
|
*/
|
|
|
|
#define SENSE_NO_SENSE 0x0
|
|
#define SENSE_RECOVERED_ERROR 0x1
|
|
#define SENSE_NOT_READY 0x2
|
|
#define SENSE_MEDIUM_ERROR 0x3
|
|
#define SENSE_HARDWARE_ERROR 0x4
|
|
#define SENSE_ILLEGAL_REQUEST 0x5
|
|
#define SENSE_UNIT_ATTENTION 0x6
|
|
#define SENSE_DATA_PROTECT 0x7
|
|
#define SENSE_BLANK_CHECK 0x8
|
|
#define SENSE_VENDOR_SPECIFIC 0x9
|
|
#define SENSE_COPY_ABORTED 0xA
|
|
#define SENSE_ABORTED_COMMAND 0xB
|
|
#define SENSE_VOLUME_OVERFLOW 0xD
|
|
#define SENSE_MISCOMPARE 0xE
|
|
|
|
|
|
#define SCSI_CHANGE_DEF 0x40 /* Change Definition (Optional) */
|
|
#define SCSI_COMPARE 0x39 /* Compare (O) */
|
|
#define SCSI_COPY 0x18 /* Copy (O) */
|
|
#define SCSI_COP_VERIFY 0x3A /* Copy and Verify (O) */
|
|
#define SCSI_INQUIRY 0x12 /* Inquiry (MANDATORY) */
|
|
#define SCSI_LOG_SELECT 0x4C /* Log Select (O) */
|
|
#define SCSI_LOG_SENSE 0x4D /* Log Sense (O) */
|
|
#define SCSI_MODE_SEL6 0x15 /* Mode Select 6-byte (Device Specific) */
|
|
#define SCSI_MODE_SEL10 0x55 /* Mode Select 10-byte (Device Specific) */
|
|
#define SCSI_MODE_SEN6 0x1A /* Mode Sense 6-byte (Device Specific) */
|
|
#define SCSI_MODE_SEN10 0x5A /* Mode Sense 10-byte (Device Specific) */
|
|
#define SCSI_READ_BUFF 0x3C /* Read Buffer (O) */
|
|
#define SCSI_REQ_SENSE 0x03 /* Request Sense (MANDATORY) */
|
|
#define SCSI_SEND_DIAG 0x1D /* Send Diagnostic (O) */
|
|
#define SCSI_TST_U_RDY 0x00 /* Test Unit Ready (MANDATORY) */
|
|
#define SCSI_WRITE_BUFF 0x3B /* Write Buffer (O) */
|
|
/***************************************************************************
|
|
* %%% Commands Unique to Direct Access Devices %%%
|
|
***************************************************************************/
|
|
#define SCSI_COMPARE 0x39 /* Compare (O) */
|
|
#define SCSI_FORMAT 0x04 /* Format Unit (MANDATORY) */
|
|
#define SCSI_LCK_UN_CAC 0x36 /* Lock Unlock Cache (O) */
|
|
#define SCSI_PREFETCH 0x34 /* Prefetch (O) */
|
|
#define SCSI_MED_REMOVL 0x1E /* Prevent/Allow medium Removal (O) */
|
|
#define SCSI_READ6 0x08 /* Read 6-byte (MANDATORY) */
|
|
#define SCSI_READ10 0x28 /* Read 10-byte (MANDATORY) */
|
|
#define SCSI_READ16 0x48
|
|
#define SCSI_RD_CAPAC 0x25 /* Read Capacity (MANDATORY) */
|
|
#define SCSI_RD_CAPAC10 SCSI_RD_CAPAC /* Read Capacity (10) */
|
|
#define SCSI_RD_CAPAC16 0x9e /* Read Capacity (16) */
|
|
#define SCSI_RD_DEFECT 0x37 /* Read Defect Data (O) */
|
|
#define SCSI_READ_LONG 0x3E /* Read Long (O) */
|
|
#define SCSI_REASS_BLK 0x07 /* Reassign Blocks (O) */
|
|
#define SCSI_RCV_DIAG 0x1C /* Receive Diagnostic Results (O) */
|
|
#define SCSI_RELEASE 0x17 /* Release Unit (MANDATORY) */
|
|
#define SCSI_REZERO 0x01 /* Rezero Unit (O) */
|
|
#define SCSI_SRCH_DAT_E 0x31 /* Search Data Equal (O) */
|
|
#define SCSI_SRCH_DAT_H 0x30 /* Search Data High (O) */
|
|
#define SCSI_SRCH_DAT_L 0x32 /* Search Data Low (O) */
|
|
#define SCSI_SEEK6 0x0B /* Seek 6-Byte (O) */
|
|
#define SCSI_SEEK10 0x2B /* Seek 10-Byte (O) */
|
|
#define SCSI_SEND_DIAG 0x1D /* Send Diagnostics (MANDATORY) */
|
|
#define SCSI_SET_LIMIT 0x33 /* Set Limits (O) */
|
|
#define SCSI_START_STP 0x1B /* Start/Stop Unit (O) */
|
|
#define SCSI_SYNC_CACHE 0x35 /* Synchronize Cache (O) */
|
|
#define SCSI_VERIFY 0x2F /* Verify (O) */
|
|
#define SCSI_WRITE6 0x0A /* Write 6-Byte (MANDATORY) */
|
|
#define SCSI_WRITE10 0x2A /* Write 10-Byte (MANDATORY) */
|
|
#define SCSI_WRT_VERIFY 0x2E /* Write and Verify (O) */
|
|
#define SCSI_WRITE_LONG 0x3F /* Write Long (O) */
|
|
#define SCSI_WRITE_SAME 0x41 /* Write Same (O) */
|
|
|
|
/**
|
|
* enum scsi_cmd_phase - current phase of the SCSI protocol
|
|
*
|
|
* @SCSIPH_START: Start phase
|
|
* @SCSIPH_DATA: Data phase
|
|
* @SCSIPH_STATUS: Status phase
|
|
*/
|
|
enum scsi_cmd_phase {
|
|
SCSIPH_START,
|
|
SCSIPH_DATA,
|
|
SCSIPH_STATUS,
|
|
};
|
|
|
|
/**
|
|
* struct scsi_inquiry_resp - holds a SCSI inquiry command
|
|
*
|
|
* @type; command type
|
|
* @flags; command flags
|
|
* @version; command version
|
|
* @data_format; data format
|
|
* @additional_len; additional data length
|
|
* @spare[3]; spare bytes
|
|
* @vendor[8]; vendor information
|
|
* @product[16]; production information
|
|
* @revision[4]; revision information
|
|
*/
|
|
struct scsi_inquiry_resp {
|
|
u8 type;
|
|
u8 flags;
|
|
u8 version;
|
|
u8 data_format;
|
|
u8 additional_len;
|
|
u8 spare[3];
|
|
char vendor[8];
|
|
char product[16];
|
|
char revision[4];
|
|
};
|
|
|
|
/**
|
|
* struct scsi_read_capacity_resp - holds the response to a read-capacity cmd
|
|
*
|
|
* @last_block_addr: Logical block address of last block
|
|
* @block_len: Length of each block in bytes
|
|
*/
|
|
struct scsi_read_capacity_resp {
|
|
u32 last_block_addr;
|
|
u32 block_len;
|
|
};
|
|
|
|
/**
|
|
* struct scsi_read10_req - holds a SCSI READ10 request
|
|
*
|
|
* @cmd; command type
|
|
* @lun_flags; LUN flags
|
|
* @lba; Logical block address to start reading from
|
|
* @spare; spare bytes
|
|
* @xfer_len: number of blocks to read
|
|
* @spare2: more spare bytes
|
|
*/
|
|
struct __packed scsi_read10_req {
|
|
u8 cmd;
|
|
u8 lun_flags;
|
|
u32 lba;
|
|
u8 spare;
|
|
u16 xfer_len;
|
|
u8 spare2[3];
|
|
};
|
|
|
|
/** struct scsi_write10_req - data for the write10 command */
|
|
struct __packed scsi_write10_req {
|
|
u8 cmd;
|
|
u8 lun_flags;
|
|
u32 lba;
|
|
u8 spare;
|
|
u16 xfer_len;
|
|
u8 spare2[3];
|
|
};
|
|
|
|
/**
|
|
* struct scsi_plat - stores information about SCSI controller
|
|
*
|
|
* @base: Controller base address
|
|
* @max_lun: Maximum number of logical units
|
|
* @max_id: Maximum number of target ids
|
|
* @max_bytes_per_req: Maximum number of bytes per read/write request
|
|
*/
|
|
struct scsi_plat {
|
|
unsigned long base;
|
|
unsigned long max_lun;
|
|
unsigned long max_id;
|
|
unsigned long max_bytes_per_req;
|
|
};
|
|
|
|
/* Operations for SCSI */
|
|
struct scsi_ops {
|
|
/**
|
|
* exec() - execute a command
|
|
*
|
|
* @dev: SCSI bus
|
|
* @cmd: Command to execute
|
|
* @return 0 if OK, -ve on error
|
|
*/
|
|
int (*exec)(struct udevice *dev, struct scsi_cmd *cmd);
|
|
|
|
/**
|
|
* bus_reset() - reset the bus
|
|
*
|
|
* @dev: SCSI bus to reset
|
|
* @return 0 if OK, -ve on error
|
|
*/
|
|
int (*bus_reset)(struct udevice *dev);
|
|
|
|
#if IS_ENABLED(CONFIG_BOUNCE_BUFFER)
|
|
/**
|
|
* buffer_aligned() - test memory alignment of block operation buffer
|
|
*
|
|
* Some devices have limited DMA capabilities and require that the
|
|
* buffers passed to them fit specific properties. This optional
|
|
* callback can be used to indicate whether a buffer alignment is
|
|
* suitable for the device DMA or not, and trigger use of generic
|
|
* bounce buffer implementation to help use of unsuitable buffers
|
|
* at the expense of performance degradation.
|
|
*
|
|
* @dev: Block device associated with the request
|
|
* @state: Bounce buffer state
|
|
* @return 1 if OK, 0 if unaligned
|
|
*/
|
|
int (*buffer_aligned)(struct udevice *dev, struct bounce_buffer *state);
|
|
#endif /* CONFIG_BOUNCE_BUFFER */
|
|
};
|
|
|
|
#define scsi_get_ops(dev) ((struct scsi_ops *)(dev)->driver->ops)
|
|
|
|
extern struct scsi_ops scsi_ops;
|
|
|
|
/**
|
|
* scsi_exec() - execute a command
|
|
*
|
|
* @dev: SCSI bus
|
|
* @cmd: Command to execute
|
|
* Return: 0 if OK, -ve on error
|
|
*/
|
|
int scsi_exec(struct udevice *dev, struct scsi_cmd *cmd);
|
|
|
|
/**
|
|
* scsi_bus_reset() - reset the bus
|
|
*
|
|
* @dev: SCSI bus to reset
|
|
* Return: 0 if OK, -ve on error
|
|
*/
|
|
int scsi_bus_reset(struct udevice *dev);
|
|
|
|
/**
|
|
* scsi_scan() - Scan all SCSI controllers for available devices
|
|
*
|
|
* @vebose: true to show information about each device found
|
|
*/
|
|
int scsi_scan(bool verbose);
|
|
|
|
/**
|
|
* scsi_scan_dev() - scan a SCSI bus and create devices
|
|
*
|
|
* @dev: SCSI bus
|
|
* @verbose: true to show information about each device found
|
|
*/
|
|
int scsi_scan_dev(struct udevice *dev, bool verbose);
|
|
|
|
#define SCSI_IDENTIFY 0xC0 /* not used */
|
|
|
|
/* Hardware errors */
|
|
#define SCSI_SEL_TIME_OUT 0x00000101 /* Selection time out */
|
|
#define SCSI_HNS_TIME_OUT 0x00000102 /* Handshake */
|
|
#define SCSI_MA_TIME_OUT 0x00000103 /* Phase error */
|
|
#define SCSI_UNEXP_DIS 0x00000104 /* unexpected disconnect */
|
|
|
|
#define SCSI_INT_STATE 0x00010000 /* unknown Interrupt number is stored in 16 LSB */
|
|
|
|
#endif /* _SCSI_H */
|