libata.h (10226B)
1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * libata.h - helper library for ATA 4 * 5 * Copyright 2003-2004 Red Hat, Inc. All rights reserved. 6 * Copyright 2003-2004 Jeff Garzik 7 * 8 * libata documentation is available via 'make {ps|pdf}docs', 9 * as Documentation/driver-api/libata.rst 10 */ 11 12#ifndef __LIBATA_H__ 13#define __LIBATA_H__ 14 15#define DRV_NAME "libata" 16#define DRV_VERSION "3.00" /* must be exactly four chars */ 17 18/* libata-core.c */ 19enum { 20 /* flags for ata_dev_read_id() */ 21 ATA_READID_POSTRESET = (1 << 0), /* reading ID after reset */ 22 23 /* selector for ata_down_xfermask_limit() */ 24 ATA_DNXFER_PIO = 0, /* speed down PIO */ 25 ATA_DNXFER_DMA = 1, /* speed down DMA */ 26 ATA_DNXFER_40C = 2, /* apply 40c cable limit */ 27 ATA_DNXFER_FORCE_PIO = 3, /* force PIO */ 28 ATA_DNXFER_FORCE_PIO0 = 4, /* force PIO0 */ 29 30 ATA_DNXFER_QUIET = (1 << 31), 31}; 32 33extern atomic_t ata_print_id; 34extern int atapi_passthru16; 35extern int libata_fua; 36extern int libata_noacpi; 37extern int libata_allow_tpm; 38extern const struct device_type ata_port_type; 39extern struct ata_link *ata_dev_phys_link(struct ata_device *dev); 40#ifdef CONFIG_ATA_FORCE 41extern void ata_force_cbl(struct ata_port *ap); 42#else 43static inline void ata_force_cbl(struct ata_port *ap) { } 44#endif 45extern u64 ata_tf_to_lba(const struct ata_taskfile *tf); 46extern u64 ata_tf_to_lba48(const struct ata_taskfile *tf); 47extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev, 48 u64 block, u32 n_block, unsigned int tf_flags, 49 unsigned int tag, int class); 50extern u64 ata_tf_read_block(const struct ata_taskfile *tf, 51 struct ata_device *dev); 52extern unsigned ata_exec_internal(struct ata_device *dev, 53 struct ata_taskfile *tf, const u8 *cdb, 54 int dma_dir, void *buf, unsigned int buflen, 55 unsigned long timeout); 56extern unsigned ata_exec_internal_sg(struct ata_device *dev, 57 struct ata_taskfile *tf, const u8 *cdb, 58 int dma_dir, struct scatterlist *sg, 59 unsigned int n_elem, unsigned long timeout); 60extern int ata_wait_ready(struct ata_link *link, unsigned long deadline, 61 int (*check_ready)(struct ata_link *link)); 62extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class, 63 unsigned int flags, u16 *id); 64extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags); 65extern int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class, 66 unsigned int readid_flags); 67extern int ata_dev_configure(struct ata_device *dev); 68extern int sata_down_spd_limit(struct ata_link *link, u32 spd_limit); 69extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel); 70extern unsigned int ata_dev_set_feature(struct ata_device *dev, 71 u8 enable, u8 feature); 72extern void ata_qc_free(struct ata_queued_cmd *qc); 73extern void ata_qc_issue(struct ata_queued_cmd *qc); 74extern void __ata_qc_complete(struct ata_queued_cmd *qc); 75extern int atapi_check_dma(struct ata_queued_cmd *qc); 76extern void swap_buf_le16(u16 *buf, unsigned int buf_words); 77extern bool ata_phys_link_online(struct ata_link *link); 78extern bool ata_phys_link_offline(struct ata_link *link); 79extern void ata_dev_init(struct ata_device *dev); 80extern void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp); 81extern int sata_link_init_spd(struct ata_link *link); 82extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg); 83extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg); 84extern struct ata_port *ata_port_alloc(struct ata_host *host); 85extern const char *sata_spd_string(unsigned int spd); 86extern int ata_port_probe(struct ata_port *ap); 87extern void __ata_port_probe(struct ata_port *ap); 88extern unsigned int ata_read_log_page(struct ata_device *dev, u8 log, 89 u8 page, void *buf, unsigned int sectors); 90 91#define to_ata_port(d) container_of(d, struct ata_port, tdev) 92 93/* libata-acpi.c */ 94#ifdef CONFIG_ATA_ACPI 95extern unsigned int ata_acpi_gtf_filter; 96extern void ata_acpi_dissociate(struct ata_host *host); 97extern void ata_acpi_on_resume(struct ata_port *ap); 98extern int ata_acpi_on_devcfg(struct ata_device *dev); 99extern void ata_acpi_on_disable(struct ata_device *dev); 100extern void ata_acpi_set_state(struct ata_port *ap, pm_message_t state); 101extern void ata_acpi_bind_port(struct ata_port *ap); 102extern void ata_acpi_bind_dev(struct ata_device *dev); 103extern acpi_handle ata_dev_acpi_handle(struct ata_device *dev); 104#else 105static inline void ata_acpi_dissociate(struct ata_host *host) { } 106static inline void ata_acpi_on_resume(struct ata_port *ap) { } 107static inline int ata_acpi_on_devcfg(struct ata_device *dev) { return 0; } 108static inline void ata_acpi_on_disable(struct ata_device *dev) { } 109static inline void ata_acpi_set_state(struct ata_port *ap, 110 pm_message_t state) { } 111static inline void ata_acpi_bind_port(struct ata_port *ap) {} 112static inline void ata_acpi_bind_dev(struct ata_device *dev) {} 113#endif 114 115/* libata-scsi.c */ 116extern struct ata_device *ata_scsi_find_dev(struct ata_port *ap, 117 const struct scsi_device *scsidev); 118extern int ata_scsi_add_hosts(struct ata_host *host, 119 struct scsi_host_template *sht); 120extern void ata_scsi_scan_host(struct ata_port *ap, int sync); 121extern int ata_scsi_offline_dev(struct ata_device *dev); 122extern void ata_scsi_set_sense(struct ata_device *dev, 123 struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq); 124extern void ata_scsi_set_sense_information(struct ata_device *dev, 125 struct scsi_cmnd *cmd, 126 const struct ata_taskfile *tf); 127extern void ata_scsi_media_change_notify(struct ata_device *dev); 128extern void ata_scsi_hotplug(struct work_struct *work); 129extern void ata_schedule_scsi_eh(struct Scsi_Host *shost); 130extern void ata_scsi_dev_rescan(struct work_struct *work); 131extern int ata_bus_probe(struct ata_port *ap); 132extern int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, 133 unsigned int id, u64 lun); 134void ata_scsi_sdev_config(struct scsi_device *sdev); 135int ata_scsi_dev_config(struct scsi_device *sdev, struct ata_device *dev); 136int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, struct ata_device *dev); 137 138/* libata-eh.c */ 139extern unsigned long ata_internal_cmd_timeout(struct ata_device *dev, u8 cmd); 140extern void ata_internal_cmd_timed_out(struct ata_device *dev, u8 cmd); 141extern void ata_eh_acquire(struct ata_port *ap); 142extern void ata_eh_release(struct ata_port *ap); 143extern void ata_scsi_error(struct Scsi_Host *host); 144extern void ata_eh_fastdrain_timerfn(struct timer_list *t); 145extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc); 146extern void ata_dev_disable(struct ata_device *dev); 147extern void ata_eh_detach_dev(struct ata_device *dev); 148extern void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev, 149 unsigned int action); 150extern void ata_eh_done(struct ata_link *link, struct ata_device *dev, 151 unsigned int action); 152extern void ata_eh_autopsy(struct ata_port *ap); 153const char *ata_get_cmd_name(u8 command); 154extern void ata_eh_report(struct ata_port *ap); 155extern int ata_eh_reset(struct ata_link *link, int classify, 156 ata_prereset_fn_t prereset, ata_reset_fn_t softreset, 157 ata_reset_fn_t hardreset, ata_postreset_fn_t postreset); 158extern int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); 159extern int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset, 160 ata_reset_fn_t softreset, ata_reset_fn_t hardreset, 161 ata_postreset_fn_t postreset, 162 struct ata_link **r_failed_disk); 163extern void ata_eh_finish(struct ata_port *ap); 164extern int ata_ering_map(struct ata_ering *ering, 165 int (*map_fn)(struct ata_ering_entry *, void *), 166 void *arg); 167extern unsigned int atapi_eh_tur(struct ata_device *dev, u8 *r_sense_key); 168extern unsigned int atapi_eh_request_sense(struct ata_device *dev, 169 u8 *sense_buf, u8 dfl_sense_key); 170 171/* libata-pmp.c */ 172#ifdef CONFIG_SATA_PMP 173extern int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val); 174extern int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val); 175extern int sata_pmp_set_lpm(struct ata_link *link, enum ata_lpm_policy policy, 176 unsigned hints); 177extern int sata_pmp_attach(struct ata_device *dev); 178#else /* CONFIG_SATA_PMP */ 179static inline int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val) 180{ 181 return -EINVAL; 182} 183 184static inline int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val) 185{ 186 return -EINVAL; 187} 188 189static inline int sata_pmp_set_lpm(struct ata_link *link, 190 enum ata_lpm_policy policy, unsigned hints) 191{ 192 return -EINVAL; 193} 194 195static inline int sata_pmp_attach(struct ata_device *dev) 196{ 197 return -EINVAL; 198} 199#endif /* CONFIG_SATA_PMP */ 200 201/* libata-sff.c */ 202#ifdef CONFIG_ATA_SFF 203extern void ata_sff_flush_pio_task(struct ata_port *ap); 204extern void ata_sff_port_init(struct ata_port *ap); 205extern int ata_sff_init(void); 206extern void ata_sff_exit(void); 207#else /* CONFIG_ATA_SFF */ 208static inline void ata_sff_flush_pio_task(struct ata_port *ap) 209{ } 210static inline void ata_sff_port_init(struct ata_port *ap) 211{ } 212static inline int ata_sff_init(void) 213{ return 0; } 214static inline void ata_sff_exit(void) 215{ } 216#endif /* CONFIG_ATA_SFF */ 217 218/* libata-zpodd.c */ 219#ifdef CONFIG_SATA_ZPODD 220void zpodd_init(struct ata_device *dev); 221void zpodd_exit(struct ata_device *dev); 222static inline bool zpodd_dev_enabled(struct ata_device *dev) 223{ 224 return dev->zpodd != NULL; 225} 226void zpodd_on_suspend(struct ata_device *dev); 227bool zpodd_zpready(struct ata_device *dev); 228void zpodd_enable_run_wake(struct ata_device *dev); 229void zpodd_disable_run_wake(struct ata_device *dev); 230void zpodd_post_poweron(struct ata_device *dev); 231#else /* CONFIG_SATA_ZPODD */ 232static inline void zpodd_init(struct ata_device *dev) {} 233static inline void zpodd_exit(struct ata_device *dev) {} 234static inline bool zpodd_dev_enabled(struct ata_device *dev) { return false; } 235static inline void zpodd_on_suspend(struct ata_device *dev) {} 236static inline bool zpodd_zpready(struct ata_device *dev) { return false; } 237static inline void zpodd_enable_run_wake(struct ata_device *dev) {} 238static inline void zpodd_disable_run_wake(struct ata_device *dev) {} 239static inline void zpodd_post_poweron(struct ata_device *dev) {} 240#endif /* CONFIG_SATA_ZPODD */ 241 242#endif /* __LIBATA_H__ */