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28#ifndef __LIBATA_H__
29#define __LIBATA_H__
30
31#define DRV_NAME "libata"
32#define DRV_VERSION "3.00"
33
34
35enum {
36
37 ATA_READID_POSTRESET = (1 << 0),
38
39
40 ATA_DNXFER_PIO = 0,
41 ATA_DNXFER_DMA = 1,
42 ATA_DNXFER_40C = 2,
43 ATA_DNXFER_FORCE_PIO = 3,
44 ATA_DNXFER_FORCE_PIO0 = 4,
45
46 ATA_DNXFER_QUIET = (1 << 31),
47};
48
49extern atomic_t ata_print_id;
50extern int atapi_passthru16;
51extern int libata_fua;
52extern int libata_noacpi;
53extern int libata_allow_tpm;
54extern const struct device_type ata_port_type;
55extern struct ata_link *ata_dev_phys_link(struct ata_device *dev);
56extern void ata_force_cbl(struct ata_port *ap);
57extern u64 ata_tf_to_lba(const struct ata_taskfile *tf);
58extern u64 ata_tf_to_lba48(const struct ata_taskfile *tf);
59extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev, int tag);
60extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev,
61 u64 block, u32 n_block, unsigned int tf_flags,
62 unsigned int tag, int class);
63extern u64 ata_tf_read_block(const struct ata_taskfile *tf,
64 struct ata_device *dev);
65extern unsigned ata_exec_internal(struct ata_device *dev,
66 struct ata_taskfile *tf, const u8 *cdb,
67 int dma_dir, void *buf, unsigned int buflen,
68 unsigned long timeout);
69extern unsigned ata_exec_internal_sg(struct ata_device *dev,
70 struct ata_taskfile *tf, const u8 *cdb,
71 int dma_dir, struct scatterlist *sg,
72 unsigned int n_elem, unsigned long timeout);
73extern int ata_wait_ready(struct ata_link *link, unsigned long deadline,
74 int (*check_ready)(struct ata_link *link));
75extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
76 unsigned int flags, u16 *id);
77extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags);
78extern int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class,
79 unsigned int readid_flags);
80extern int ata_dev_configure(struct ata_device *dev);
81extern int sata_down_spd_limit(struct ata_link *link, u32 spd_limit);
82extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel);
83extern unsigned int ata_dev_set_feature(struct ata_device *dev,
84 u8 enable, u8 feature);
85extern void ata_qc_free(struct ata_queued_cmd *qc);
86extern void ata_qc_issue(struct ata_queued_cmd *qc);
87extern void __ata_qc_complete(struct ata_queued_cmd *qc);
88extern int atapi_check_dma(struct ata_queued_cmd *qc);
89extern void swap_buf_le16(u16 *buf, unsigned int buf_words);
90extern bool ata_phys_link_online(struct ata_link *link);
91extern bool ata_phys_link_offline(struct ata_link *link);
92extern void ata_dev_init(struct ata_device *dev);
93extern void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp);
94extern int sata_link_init_spd(struct ata_link *link);
95extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg);
96extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg);
97extern struct ata_port *ata_port_alloc(struct ata_host *host);
98extern const char *sata_spd_string(unsigned int spd);
99extern int ata_port_probe(struct ata_port *ap);
100extern void __ata_port_probe(struct ata_port *ap);
101extern unsigned int ata_read_log_page(struct ata_device *dev, u8 log,
102 u8 page, void *buf, unsigned int sectors);
103extern void ata_host_get(struct ata_host *host);
104extern void ata_host_put(struct ata_host *host);
105
106#define to_ata_port(d) container_of(d, struct ata_port, tdev)
107
108
109#ifdef CONFIG_ATA_ACPI
110extern unsigned int ata_acpi_gtf_filter;
111extern void ata_acpi_dissociate(struct ata_host *host);
112extern int ata_acpi_on_suspend(struct ata_port *ap);
113extern void ata_acpi_on_resume(struct ata_port *ap);
114extern int ata_acpi_on_devcfg(struct ata_device *dev);
115extern void ata_acpi_on_disable(struct ata_device *dev);
116extern void ata_acpi_set_state(struct ata_port *ap, pm_message_t state);
117extern void ata_acpi_bind_port(struct ata_port *ap);
118extern void ata_acpi_bind_dev(struct ata_device *dev);
119extern acpi_handle ata_dev_acpi_handle(struct ata_device *dev);
120#else
121static inline void ata_acpi_dissociate(struct ata_host *host) { }
122static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; }
123static inline void ata_acpi_on_resume(struct ata_port *ap) { }
124static inline int ata_acpi_on_devcfg(struct ata_device *dev) { return 0; }
125static inline void ata_acpi_on_disable(struct ata_device *dev) { }
126static inline void ata_acpi_set_state(struct ata_port *ap,
127 pm_message_t state) { }
128static inline void ata_acpi_bind_port(struct ata_port *ap) {}
129static inline void ata_acpi_bind_dev(struct ata_device *dev) {}
130#endif
131
132
133extern int ata_scsi_add_hosts(struct ata_host *host,
134 struct scsi_host_template *sht);
135extern void ata_scsi_scan_host(struct ata_port *ap, int sync);
136extern int ata_scsi_offline_dev(struct ata_device *dev);
137extern void ata_scsi_set_sense(struct ata_device *dev,
138 struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq);
139extern void ata_scsi_set_sense_information(struct ata_device *dev,
140 struct scsi_cmnd *cmd,
141 const struct ata_taskfile *tf);
142extern void ata_scsi_media_change_notify(struct ata_device *dev);
143extern void ata_scsi_hotplug(struct work_struct *work);
144extern void ata_schedule_scsi_eh(struct Scsi_Host *shost);
145extern void ata_scsi_dev_rescan(struct work_struct *work);
146extern int ata_bus_probe(struct ata_port *ap);
147extern int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel,
148 unsigned int id, u64 lun);
149int ata_sas_allocate_tag(struct ata_port *ap);
150void ata_sas_free_tag(unsigned int tag, struct ata_port *ap);
151
152
153
154extern unsigned long ata_internal_cmd_timeout(struct ata_device *dev, u8 cmd);
155extern void ata_internal_cmd_timed_out(struct ata_device *dev, u8 cmd);
156extern void ata_eh_acquire(struct ata_port *ap);
157extern void ata_eh_release(struct ata_port *ap);
158extern void ata_scsi_error(struct Scsi_Host *host);
159extern void ata_eh_fastdrain_timerfn(struct timer_list *t);
160extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc);
161extern void ata_dev_disable(struct ata_device *dev);
162extern void ata_eh_detach_dev(struct ata_device *dev);
163extern void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev,
164 unsigned int action);
165extern void ata_eh_done(struct ata_link *link, struct ata_device *dev,
166 unsigned int action);
167extern void ata_eh_autopsy(struct ata_port *ap);
168const char *ata_get_cmd_descript(u8 command);
169extern void ata_eh_report(struct ata_port *ap);
170extern int ata_eh_reset(struct ata_link *link, int classify,
171 ata_prereset_fn_t prereset, ata_reset_fn_t softreset,
172 ata_reset_fn_t hardreset, ata_postreset_fn_t postreset);
173extern int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
174extern int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
175 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
176 ata_postreset_fn_t postreset,
177 struct ata_link **r_failed_disk);
178extern void ata_eh_finish(struct ata_port *ap);
179extern int ata_ering_map(struct ata_ering *ering,
180 int (*map_fn)(struct ata_ering_entry *, void *),
181 void *arg);
182extern unsigned int atapi_eh_tur(struct ata_device *dev, u8 *r_sense_key);
183extern unsigned int atapi_eh_request_sense(struct ata_device *dev,
184 u8 *sense_buf, u8 dfl_sense_key);
185
186
187#ifdef CONFIG_SATA_PMP
188extern int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val);
189extern int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val);
190extern int sata_pmp_set_lpm(struct ata_link *link, enum ata_lpm_policy policy,
191 unsigned hints);
192extern int sata_pmp_attach(struct ata_device *dev);
193#else
194static inline int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val)
195{
196 return -EINVAL;
197}
198
199static inline int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val)
200{
201 return -EINVAL;
202}
203
204static inline int sata_pmp_set_lpm(struct ata_link *link,
205 enum ata_lpm_policy policy, unsigned hints)
206{
207 return -EINVAL;
208}
209
210static inline int sata_pmp_attach(struct ata_device *dev)
211{
212 return -EINVAL;
213}
214#endif
215
216
217#ifdef CONFIG_ATA_SFF
218extern void ata_sff_flush_pio_task(struct ata_port *ap);
219extern void ata_sff_port_init(struct ata_port *ap);
220extern int ata_sff_init(void);
221extern void ata_sff_exit(void);
222#else
223static inline void ata_sff_flush_pio_task(struct ata_port *ap)
224{ }
225static inline void ata_sff_port_init(struct ata_port *ap)
226{ }
227static inline int ata_sff_init(void)
228{ return 0; }
229static inline void ata_sff_exit(void)
230{ }
231#endif
232
233
234#ifdef CONFIG_SATA_ZPODD
235void zpodd_init(struct ata_device *dev);
236void zpodd_exit(struct ata_device *dev);
237static inline bool zpodd_dev_enabled(struct ata_device *dev)
238{
239 return dev->zpodd != NULL;
240}
241void zpodd_on_suspend(struct ata_device *dev);
242bool zpodd_zpready(struct ata_device *dev);
243void zpodd_enable_run_wake(struct ata_device *dev);
244void zpodd_disable_run_wake(struct ata_device *dev);
245void zpodd_post_poweron(struct ata_device *dev);
246#else
247static inline void zpodd_init(struct ata_device *dev) {}
248static inline void zpodd_exit(struct ata_device *dev) {}
249static inline bool zpodd_dev_enabled(struct ata_device *dev) { return false; }
250static inline void zpodd_on_suspend(struct ata_device *dev) {}
251static inline bool zpodd_zpready(struct ata_device *dev) { return false; }
252static inline void zpodd_enable_run_wake(struct ata_device *dev) {}
253static inline void zpodd_disable_run_wake(struct ata_device *dev) {}
254static inline void zpodd_post_poweron(struct ata_device *dev) {}
255#endif
256
257#endif
258