| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ | 
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| 2 | /* | 
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| 3 | *  libata.h - helper library for ATA | 
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| 4 | * | 
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| 5 | *  Copyright 2003-2004 Red Hat, Inc.  All rights reserved. | 
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| 6 | *  Copyright 2003-2004 Jeff Garzik | 
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| 7 | * | 
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| 8 | *  libata documentation is available via 'make {ps|pdf}docs', | 
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| 9 | *  as Documentation/driver-api/libata.rst | 
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| 10 | */ | 
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| 11 |  | 
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| 12 | #ifndef __LIBATA_H__ | 
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| 13 | #define __LIBATA_H__ | 
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| 14 |  | 
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| 15 | #define DRV_NAME	"libata" | 
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| 16 | #define DRV_VERSION	"3.00"	/* must be exactly four chars */ | 
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| 17 |  | 
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| 18 | /* libata-core.c */ | 
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| 19 | enum { | 
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| 20 | /* flags for ata_dev_read_id() */ | 
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| 21 | ATA_READID_POSTRESET	= (1 << 0), /* reading ID after reset */ | 
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| 22 |  | 
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| 23 | /* selector for ata_down_xfermask_limit() */ | 
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| 24 | ATA_DNXFER_PIO		= 0,	/* speed down PIO */ | 
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| 25 | ATA_DNXFER_DMA		= 1,	/* speed down DMA */ | 
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| 26 | ATA_DNXFER_40C		= 2,	/* apply 40c cable limit */ | 
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| 27 | ATA_DNXFER_FORCE_PIO	= 3,	/* force PIO */ | 
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| 28 | ATA_DNXFER_FORCE_PIO0	= 4,	/* force PIO0 */ | 
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| 29 |  | 
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| 30 | ATA_DNXFER_QUIET	= (1 << 31), | 
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| 31 | }; | 
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| 32 |  | 
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| 33 | #define ATA_PORT_TYPE_NAME	"ata_port" | 
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| 34 |  | 
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| 35 | extern int atapi_passthru16; | 
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| 36 | extern int libata_fua; | 
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| 37 | extern int libata_noacpi; | 
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| 38 | extern int libata_allow_tpm; | 
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| 39 | extern const struct device_type ata_port_type; | 
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| 40 | extern struct ata_link *ata_dev_phys_link(struct ata_device *dev); | 
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| 41 |  | 
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| 42 | static inline bool ata_sstatus_online(u32 sstatus) | 
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| 43 | { | 
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| 44 | return (sstatus & 0xf) == 0x3; | 
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| 45 | } | 
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| 46 |  | 
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| 47 | static inline bool ata_dev_is_zac(struct ata_device *dev) | 
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| 48 | { | 
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| 49 | /* Host managed device or host aware device */ | 
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| 50 | return dev->class == ATA_DEV_ZAC || | 
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| 51 | ata_id_zoned_cap(id: dev->id) == 0x01; | 
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| 52 | } | 
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| 53 |  | 
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| 54 | static inline bool ata_port_eh_scheduled(struct ata_port *ap) | 
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| 55 | { | 
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| 56 | return ap->pflags & (ATA_PFLAG_EH_PENDING | ATA_PFLAG_EH_IN_PROGRESS); | 
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| 57 | } | 
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| 58 |  | 
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| 59 | #ifdef CONFIG_ATA_FORCE | 
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| 60 | extern void ata_force_cbl(struct ata_port *ap); | 
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| 61 | #else | 
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| 62 | static inline void ata_force_cbl(struct ata_port *ap) { } | 
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| 63 | #endif | 
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| 64 | extern u64 ata_tf_to_lba(const struct ata_taskfile *tf); | 
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| 65 | extern u64 ata_tf_to_lba48(const struct ata_taskfile *tf); | 
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| 66 | extern int ata_build_rw_tf(struct ata_queued_cmd *qc, u64 block, u32 n_block, | 
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| 67 | unsigned int tf_flags, int dld, int class); | 
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| 68 | extern u64 ata_tf_read_block(const struct ata_taskfile *tf, | 
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| 69 | struct ata_device *dev); | 
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| 70 | unsigned int ata_exec_internal(struct ata_device *dev, struct ata_taskfile *tf, | 
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| 71 | const u8 *cdb, enum dma_data_direction dma_dir, | 
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| 72 | void *buf, unsigned int buflen, | 
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| 73 | unsigned int timeout); | 
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| 74 | extern int ata_wait_ready(struct ata_link *link, unsigned long deadline, | 
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| 75 | int (*check_ready)(struct ata_link *link)); | 
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| 76 | extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class, | 
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| 77 | unsigned int flags, u16 *id); | 
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| 78 | extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags); | 
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| 79 | extern int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class, | 
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| 80 | unsigned int readid_flags); | 
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| 81 | extern int ata_dev_configure(struct ata_device *dev); | 
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| 82 | extern bool ata_dev_power_init_tf(struct ata_device *dev, | 
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| 83 | struct ata_taskfile *tf, bool set_active); | 
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| 84 | extern void ata_dev_power_set_standby(struct ata_device *dev); | 
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| 85 | extern void ata_dev_power_set_active(struct ata_device *dev); | 
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| 86 | void ata_dev_free_resources(struct ata_device *dev); | 
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| 87 | extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel); | 
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| 88 | extern unsigned int ata_dev_set_feature(struct ata_device *dev, | 
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| 89 | u8 subcmd, u8 action); | 
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| 90 | extern void ata_qc_free(struct ata_queued_cmd *qc); | 
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| 91 | extern void ata_qc_issue(struct ata_queued_cmd *qc); | 
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| 92 | extern void __ata_qc_complete(struct ata_queued_cmd *qc); | 
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| 93 | extern int atapi_check_dma(struct ata_queued_cmd *qc); | 
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| 94 | extern void swap_buf_le16(u16 *buf, unsigned int buf_words); | 
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| 95 | extern bool ata_phys_link_online(struct ata_link *link); | 
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| 96 | extern bool ata_phys_link_offline(struct ata_link *link); | 
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| 97 | extern void ata_dev_init(struct ata_device *dev); | 
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| 98 | extern void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp); | 
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| 99 | extern int sata_link_init_spd(struct ata_link *link); | 
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| 100 | extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg); | 
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| 101 | extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg); | 
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| 102 | extern const char *sata_spd_string(unsigned int spd); | 
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| 103 | extern unsigned int ata_read_log_page(struct ata_device *dev, u8 log, | 
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| 104 | u8 page, void *buf, unsigned int sectors); | 
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| 105 |  | 
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| 106 | #define to_ata_port(d) container_of(d, struct ata_port, tdev) | 
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| 107 |  | 
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| 108 | /* libata-sata.c */ | 
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| 109 | #ifdef CONFIG_SATA_HOST | 
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| 110 | int sata_down_spd_limit(struct ata_link *link, u32 spd_limit); | 
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| 111 | int ata_eh_get_ncq_success_sense(struct ata_link *link); | 
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| 112 | #else | 
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| 113 | static inline int sata_down_spd_limit(struct ata_link *link, u32 spd_limit) | 
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| 114 | { | 
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| 115 | return -EOPNOTSUPP; | 
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| 116 | } | 
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| 117 | static inline int ata_eh_get_ncq_success_sense(struct ata_link *link) | 
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| 118 | { | 
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| 119 | return -EOPNOTSUPP; | 
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| 120 | } | 
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| 121 | #endif | 
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| 122 |  | 
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| 123 | /* libata-acpi.c */ | 
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| 124 | #ifdef CONFIG_ATA_ACPI | 
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| 125 | extern unsigned int ata_acpi_gtf_filter; | 
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| 126 | extern void ata_acpi_dissociate(struct ata_host *host); | 
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| 127 | extern void ata_acpi_on_resume(struct ata_port *ap); | 
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| 128 | extern int ata_acpi_on_devcfg(struct ata_device *dev); | 
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| 129 | extern void ata_acpi_on_disable(struct ata_device *dev); | 
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| 130 | extern void ata_acpi_set_state(struct ata_port *ap, pm_message_t state); | 
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| 131 | extern void ata_acpi_bind_port(struct ata_port *ap); | 
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| 132 | extern void ata_acpi_bind_dev(struct ata_device *dev); | 
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| 133 | extern acpi_handle ata_dev_acpi_handle(struct ata_device *dev); | 
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| 134 | #else | 
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| 135 | static inline void ata_acpi_dissociate(struct ata_host *host) { } | 
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| 136 | static inline void ata_acpi_on_resume(struct ata_port *ap) { } | 
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| 137 | static inline int ata_acpi_on_devcfg(struct ata_device *dev) { return 0; } | 
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| 138 | static inline void ata_acpi_on_disable(struct ata_device *dev) { } | 
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| 139 | static inline void ata_acpi_set_state(struct ata_port *ap, | 
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| 140 | pm_message_t state) { } | 
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| 141 | static inline void ata_acpi_bind_port(struct ata_port *ap) {} | 
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| 142 | static inline void ata_acpi_bind_dev(struct ata_device *dev) {} | 
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| 143 | #endif | 
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| 144 |  | 
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| 145 | /* libata-scsi.c */ | 
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| 146 | extern struct ata_device *ata_scsi_find_dev(struct ata_port *ap, | 
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| 147 | const struct scsi_device *scsidev); | 
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| 148 | extern int ata_scsi_add_hosts(struct ata_host *host, | 
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| 149 | const struct scsi_host_template *sht); | 
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| 150 | extern void ata_scsi_scan_host(struct ata_port *ap, int sync); | 
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| 151 | extern bool ata_scsi_offline_dev(struct ata_device *dev); | 
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| 152 | extern bool ata_scsi_sense_is_valid(u8 sk, u8 asc, u8 ascq); | 
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| 153 | extern void ata_scsi_set_sense(struct ata_device *dev, | 
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| 154 | struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq); | 
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| 155 | extern void ata_scsi_media_change_notify(struct ata_device *dev); | 
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| 156 | extern void ata_scsi_hotplug(struct work_struct *work); | 
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| 157 | extern void ata_scsi_dev_rescan(struct work_struct *work); | 
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| 158 | extern int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, | 
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| 159 | unsigned int id, u64 lun); | 
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| 160 | void ata_scsi_sdev_config(struct scsi_device *sdev); | 
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| 161 | int ata_scsi_dev_config(struct scsi_device *sdev, struct queue_limits *lim, | 
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| 162 | struct ata_device *dev); | 
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| 163 | int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, struct ata_device *dev); | 
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| 164 |  | 
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| 165 | /* libata-eh.c */ | 
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| 166 | extern unsigned int ata_internal_cmd_timeout(struct ata_device *dev, u8 cmd); | 
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| 167 | extern void ata_internal_cmd_timed_out(struct ata_device *dev, u8 cmd); | 
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| 168 | extern void ata_eh_acquire(struct ata_port *ap); | 
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| 169 | extern void ata_eh_release(struct ata_port *ap); | 
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| 170 | extern void ata_scsi_error(struct Scsi_Host *host); | 
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| 171 | extern void ata_eh_fastdrain_timerfn(struct timer_list *t); | 
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| 172 | extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc); | 
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| 173 | extern void ata_dev_disable(struct ata_device *dev); | 
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| 174 | extern void ata_eh_detach_dev(struct ata_device *dev); | 
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| 175 | extern void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev, | 
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| 176 | unsigned int action); | 
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| 177 | extern void ata_eh_done(struct ata_link *link, struct ata_device *dev, | 
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| 178 | unsigned int action); | 
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| 179 | extern void ata_eh_autopsy(struct ata_port *ap); | 
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| 180 | const char *ata_get_cmd_name(u8 command); | 
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| 181 | extern void ata_eh_report(struct ata_port *ap); | 
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| 182 | extern int ata_eh_reset(struct ata_link *link, int classify, | 
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| 183 | struct ata_reset_operations *reset_ops); | 
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| 184 | extern int ata_eh_recover(struct ata_port *ap, | 
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| 185 | struct ata_reset_operations *reset_ops, | 
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| 186 | struct ata_link **r_failed_disk); | 
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| 187 | extern void ata_eh_finish(struct ata_port *ap); | 
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| 188 | extern int ata_ering_map(struct ata_ering *ering, | 
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| 189 | int (*map_fn)(struct ata_ering_entry *, void *), | 
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| 190 | void *arg); | 
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| 191 | enum scsi_disposition ata_eh_decide_disposition(struct ata_queued_cmd *qc); | 
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| 192 | extern unsigned int atapi_eh_tur(struct ata_device *dev, u8 *r_sense_key); | 
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| 193 | extern unsigned int atapi_eh_request_sense(struct ata_device *dev, | 
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| 194 | u8 *sense_buf, u8 dfl_sense_key); | 
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| 195 |  | 
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| 196 | /* libata-pmp.c */ | 
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| 197 | #ifdef CONFIG_SATA_PMP | 
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| 198 | extern int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val); | 
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| 199 | extern int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val); | 
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| 200 | extern int sata_pmp_set_lpm(struct ata_link *link, enum ata_lpm_policy policy, | 
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| 201 | unsigned hints); | 
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| 202 | extern int sata_pmp_attach(struct ata_device *dev); | 
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| 203 | #else /* CONFIG_SATA_PMP */ | 
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| 204 | static inline int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val) | 
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| 205 | { | 
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| 206 | return -EINVAL; | 
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| 207 | } | 
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| 208 |  | 
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| 209 | static inline int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val) | 
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| 210 | { | 
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| 211 | return -EINVAL; | 
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| 212 | } | 
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| 213 |  | 
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| 214 | static inline int sata_pmp_set_lpm(struct ata_link *link, | 
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| 215 | enum ata_lpm_policy policy, unsigned hints) | 
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| 216 | { | 
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| 217 | return -EINVAL; | 
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| 218 | } | 
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| 219 |  | 
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| 220 | static inline int sata_pmp_attach(struct ata_device *dev) | 
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| 221 | { | 
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| 222 | return -EINVAL; | 
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| 223 | } | 
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| 224 | #endif /* CONFIG_SATA_PMP */ | 
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| 225 |  | 
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| 226 | /* libata-sff.c */ | 
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| 227 | #ifdef CONFIG_ATA_SFF | 
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| 228 | extern void ata_sff_flush_pio_task(struct ata_port *ap); | 
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| 229 | extern void ata_sff_port_init(struct ata_port *ap); | 
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| 230 | extern int ata_sff_init(void); | 
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| 231 | extern void ata_sff_exit(void); | 
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| 232 | #else /* CONFIG_ATA_SFF */ | 
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| 233 | static inline void ata_sff_flush_pio_task(struct ata_port *ap) | 
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| 234 | { } | 
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| 235 | static inline void ata_sff_port_init(struct ata_port *ap) | 
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| 236 | { } | 
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| 237 | static inline int ata_sff_init(void) | 
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| 238 | { return 0; } | 
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| 239 | static inline void ata_sff_exit(void) | 
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| 240 | { } | 
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| 241 | #endif /* CONFIG_ATA_SFF */ | 
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| 242 |  | 
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| 243 | /* libata-zpodd.c */ | 
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| 244 | #ifdef CONFIG_SATA_ZPODD | 
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| 245 | void zpodd_init(struct ata_device *dev); | 
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| 246 | void zpodd_exit(struct ata_device *dev); | 
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| 247 | static inline bool zpodd_dev_enabled(struct ata_device *dev) | 
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| 248 | { | 
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| 249 | return dev->zpodd != NULL; | 
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| 250 | } | 
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| 251 | void zpodd_on_suspend(struct ata_device *dev); | 
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| 252 | bool zpodd_zpready(struct ata_device *dev); | 
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| 253 | void zpodd_enable_run_wake(struct ata_device *dev); | 
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| 254 | void zpodd_disable_run_wake(struct ata_device *dev); | 
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| 255 | void zpodd_post_poweron(struct ata_device *dev); | 
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| 256 | #else /* CONFIG_SATA_ZPODD */ | 
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| 257 | static inline void zpodd_init(struct ata_device *dev) {} | 
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| 258 | static inline void zpodd_exit(struct ata_device *dev) {} | 
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| 259 | static inline bool zpodd_dev_enabled(struct ata_device *dev) { return false; } | 
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| 260 | static inline void zpodd_on_suspend(struct ata_device *dev) {} | 
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| 261 | static inline bool zpodd_zpready(struct ata_device *dev) { return false; } | 
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| 262 | static inline void zpodd_enable_run_wake(struct ata_device *dev) {} | 
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| 263 | static inline void zpodd_disable_run_wake(struct ata_device *dev) {} | 
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| 264 | static inline void zpodd_post_poweron(struct ata_device *dev) {} | 
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| 265 | #endif /* CONFIG_SATA_ZPODD */ | 
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| 266 |  | 
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| 267 | #endif /* __LIBATA_H__ */ | 
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| 268 |  | 
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