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 */ 19 enum { 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 33 extern atomic_t ata_print_id; 34 extern int atapi_passthru16; 35 extern int libata_fua; 36 extern int libata_noacpi; 37 extern int libata_allow_tpm; 38 extern const struct device_type ata_port_type; 39 extern struct ata_link *ata_dev_phys_link(struct ata_device *dev); 40 #ifdef CONFIG_ATA_FORCE 41 extern void ata_force_cbl(struct ata_port *ap); 42 #else 43 static inline void ata_force_cbl(struct ata_port *ap) { } 44 #endif 45 extern u64 ata_tf_to_lba(const struct ata_taskfile *tf); 46 extern u64 ata_tf_to_lba48(const struct ata_taskfile *tf); 47 extern int ata_build_rw_tf(struct ata_queued_cmd *qc, u64 block, u32 n_block, 48 unsigned int tf_flags, int class); 49 extern u64 ata_tf_read_block(const struct ata_taskfile *tf, 50 struct ata_device *dev); 51 extern unsigned ata_exec_internal(struct ata_device *dev, 52 struct ata_taskfile *tf, const u8 *cdb, 53 int dma_dir, void *buf, unsigned int buflen, 54 unsigned int timeout); 55 extern int ata_wait_ready(struct ata_link *link, unsigned long deadline, 56 int (*check_ready)(struct ata_link *link)); 57 extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class, 58 unsigned int flags, u16 *id); 59 extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags); 60 extern int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class, 61 unsigned int readid_flags); 62 extern int ata_dev_configure(struct ata_device *dev); 63 extern int sata_down_spd_limit(struct ata_link *link, u32 spd_limit); 64 extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel); 65 extern unsigned int ata_dev_set_feature(struct ata_device *dev, 66 u8 subcmd, u8 action); 67 extern void ata_qc_free(struct ata_queued_cmd *qc); 68 extern void ata_qc_issue(struct ata_queued_cmd *qc); 69 extern void __ata_qc_complete(struct ata_queued_cmd *qc); 70 extern int atapi_check_dma(struct ata_queued_cmd *qc); 71 extern void swap_buf_le16(u16 *buf, unsigned int buf_words); 72 extern bool ata_phys_link_online(struct ata_link *link); 73 extern bool ata_phys_link_offline(struct ata_link *link); 74 extern void ata_dev_init(struct ata_device *dev); 75 extern void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp); 76 extern int sata_link_init_spd(struct ata_link *link); 77 extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg); 78 extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg); 79 extern struct ata_port *ata_port_alloc(struct ata_host *host); 80 extern const char *sata_spd_string(unsigned int spd); 81 extern int ata_port_probe(struct ata_port *ap); 82 extern void __ata_port_probe(struct ata_port *ap); 83 extern unsigned int ata_read_log_page(struct ata_device *dev, u8 log, 84 u8 page, void *buf, unsigned int sectors); 85 86 #define to_ata_port(d) container_of(d, struct ata_port, tdev) 87 88 /* libata-acpi.c */ 89 #ifdef CONFIG_ATA_ACPI 90 extern unsigned int ata_acpi_gtf_filter; 91 extern void ata_acpi_dissociate(struct ata_host *host); 92 extern void ata_acpi_on_resume(struct ata_port *ap); 93 extern int ata_acpi_on_devcfg(struct ata_device *dev); 94 extern void ata_acpi_on_disable(struct ata_device *dev); 95 extern void ata_acpi_set_state(struct ata_port *ap, pm_message_t state); 96 extern void ata_acpi_bind_port(struct ata_port *ap); 97 extern void ata_acpi_bind_dev(struct ata_device *dev); 98 extern acpi_handle ata_dev_acpi_handle(struct ata_device *dev); 99 #else 100 static inline void ata_acpi_dissociate(struct ata_host *host) { } 101 static inline void ata_acpi_on_resume(struct ata_port *ap) { } 102 static inline int ata_acpi_on_devcfg(struct ata_device *dev) { return 0; } 103 static inline void ata_acpi_on_disable(struct ata_device *dev) { } 104 static inline void ata_acpi_set_state(struct ata_port *ap, 105 pm_message_t state) { } 106 static inline void ata_acpi_bind_port(struct ata_port *ap) {} 107 static inline void ata_acpi_bind_dev(struct ata_device *dev) {} 108 #endif 109 110 /* libata-scsi.c */ 111 extern struct ata_device *ata_scsi_find_dev(struct ata_port *ap, 112 const struct scsi_device *scsidev); 113 extern int ata_scsi_add_hosts(struct ata_host *host, 114 struct scsi_host_template *sht); 115 extern void ata_scsi_scan_host(struct ata_port *ap, int sync); 116 extern int ata_scsi_offline_dev(struct ata_device *dev); 117 extern bool ata_scsi_sense_is_valid(u8 sk, u8 asc, u8 ascq); 118 extern void ata_scsi_set_sense(struct ata_device *dev, 119 struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq); 120 extern void ata_scsi_set_sense_information(struct ata_device *dev, 121 struct scsi_cmnd *cmd, 122 const struct ata_taskfile *tf); 123 extern void ata_scsi_media_change_notify(struct ata_device *dev); 124 extern void ata_scsi_hotplug(struct work_struct *work); 125 extern void ata_schedule_scsi_eh(struct Scsi_Host *shost); 126 extern void ata_scsi_dev_rescan(struct work_struct *work); 127 extern int ata_bus_probe(struct ata_port *ap); 128 extern int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, 129 unsigned int id, u64 lun); 130 void ata_scsi_sdev_config(struct scsi_device *sdev); 131 int ata_scsi_dev_config(struct scsi_device *sdev, struct ata_device *dev); 132 int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, struct ata_device *dev); 133 134 /* libata-eh.c */ 135 extern unsigned int ata_internal_cmd_timeout(struct ata_device *dev, u8 cmd); 136 extern void ata_internal_cmd_timed_out(struct ata_device *dev, u8 cmd); 137 extern void ata_eh_acquire(struct ata_port *ap); 138 extern void ata_eh_release(struct ata_port *ap); 139 extern void ata_scsi_error(struct Scsi_Host *host); 140 extern void ata_eh_fastdrain_timerfn(struct timer_list *t); 141 extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc); 142 extern void ata_dev_disable(struct ata_device *dev); 143 extern void ata_eh_detach_dev(struct ata_device *dev); 144 extern void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev, 145 unsigned int action); 146 extern void ata_eh_done(struct ata_link *link, struct ata_device *dev, 147 unsigned int action); 148 extern void ata_eh_autopsy(struct ata_port *ap); 149 const char *ata_get_cmd_name(u8 command); 150 extern void ata_eh_report(struct ata_port *ap); 151 extern int ata_eh_reset(struct ata_link *link, int classify, 152 ata_prereset_fn_t prereset, ata_reset_fn_t softreset, 153 ata_reset_fn_t hardreset, ata_postreset_fn_t postreset); 154 extern int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); 155 extern int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset, 156 ata_reset_fn_t softreset, ata_reset_fn_t hardreset, 157 ata_postreset_fn_t postreset, 158 struct ata_link **r_failed_disk); 159 extern void ata_eh_finish(struct ata_port *ap); 160 extern int ata_ering_map(struct ata_ering *ering, 161 int (*map_fn)(struct ata_ering_entry *, void *), 162 void *arg); 163 extern unsigned int atapi_eh_tur(struct ata_device *dev, u8 *r_sense_key); 164 extern unsigned int atapi_eh_request_sense(struct ata_device *dev, 165 u8 *sense_buf, u8 dfl_sense_key); 166 167 /* libata-pmp.c */ 168 #ifdef CONFIG_SATA_PMP 169 extern int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val); 170 extern int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val); 171 extern int sata_pmp_set_lpm(struct ata_link *link, enum ata_lpm_policy policy, 172 unsigned hints); 173 extern int sata_pmp_attach(struct ata_device *dev); 174 #else /* CONFIG_SATA_PMP */ 175 static inline int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val) 176 { 177 return -EINVAL; 178 } 179 180 static inline int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val) 181 { 182 return -EINVAL; 183 } 184 185 static inline int sata_pmp_set_lpm(struct ata_link *link, 186 enum ata_lpm_policy policy, unsigned hints) 187 { 188 return -EINVAL; 189 } 190 191 static inline int sata_pmp_attach(struct ata_device *dev) 192 { 193 return -EINVAL; 194 } 195 #endif /* CONFIG_SATA_PMP */ 196 197 /* libata-sff.c */ 198 #ifdef CONFIG_ATA_SFF 199 extern void ata_sff_flush_pio_task(struct ata_port *ap); 200 extern void ata_sff_port_init(struct ata_port *ap); 201 extern int ata_sff_init(void); 202 extern void ata_sff_exit(void); 203 #else /* CONFIG_ATA_SFF */ 204 static inline void ata_sff_flush_pio_task(struct ata_port *ap) 205 { } 206 static inline void ata_sff_port_init(struct ata_port *ap) 207 { } 208 static inline int ata_sff_init(void) 209 { return 0; } 210 static inline void ata_sff_exit(void) 211 { } 212 #endif /* CONFIG_ATA_SFF */ 213 214 /* libata-zpodd.c */ 215 #ifdef CONFIG_SATA_ZPODD 216 void zpodd_init(struct ata_device *dev); 217 void zpodd_exit(struct ata_device *dev); 218 static inline bool zpodd_dev_enabled(struct ata_device *dev) 219 { 220 return dev->zpodd != NULL; 221 } 222 void zpodd_on_suspend(struct ata_device *dev); 223 bool zpodd_zpready(struct ata_device *dev); 224 void zpodd_enable_run_wake(struct ata_device *dev); 225 void zpodd_disable_run_wake(struct ata_device *dev); 226 void zpodd_post_poweron(struct ata_device *dev); 227 #else /* CONFIG_SATA_ZPODD */ 228 static inline void zpodd_init(struct ata_device *dev) {} 229 static inline void zpodd_exit(struct ata_device *dev) {} 230 static inline bool zpodd_dev_enabled(struct ata_device *dev) { return false; } 231 static inline void zpodd_on_suspend(struct ata_device *dev) {} 232 static inline bool zpodd_zpready(struct ata_device *dev) { return false; } 233 static inline void zpodd_enable_run_wake(struct ata_device *dev) {} 234 static inline void zpodd_disable_run_wake(struct ata_device *dev) {} 235 static inline void zpodd_post_poweron(struct ata_device *dev) {} 236 #endif /* CONFIG_SATA_ZPODD */ 237 238 #endif /* __LIBATA_H__ */ 239