1 /* 2 * libata.h - helper library for ATA 3 * 4 * Copyright 2003-2004 Red Hat, Inc. All rights reserved. 5 * Copyright 2003-2004 Jeff Garzik 6 * 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2, or (at your option) 11 * any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; see the file COPYING. If not, write to 20 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 21 * 22 * 23 * libata documentation is available via 'make {ps|pdf}docs', 24 * as Documentation/DocBook/libata.* 25 * 26 */ 27 28 #ifndef __LIBATA_H__ 29 #define __LIBATA_H__ 30 31 #define DRV_NAME "libata" 32 33 struct ata_scsi_args { 34 struct ata_device *dev; 35 u16 *id; 36 struct scsi_cmnd *cmd; 37 void (*done)(struct scsi_cmnd *); 38 }; 39 40 /* libata-core.c */ 41 enum { 42 /* flags for ata_dev_read_id() */ 43 ATA_READID_POSTRESET = (1 << 0), /* reading ID after reset */ 44 45 /* selector for ata_down_xfermask_limit() */ 46 ATA_DNXFER_PIO = 0, /* speed down PIO */ 47 ATA_DNXFER_DMA = 1, /* speed down DMA */ 48 ATA_DNXFER_40C = 2, /* apply 40c cable limit */ 49 ATA_DNXFER_FORCE_PIO = 3, /* force PIO */ 50 ATA_DNXFER_FORCE_PIO0 = 4, /* force PIO0 */ 51 52 ATA_DNXFER_QUIET = (1 << 31), 53 }; 54 55 extern struct workqueue_struct *ata_aux_wq; 56 extern int atapi_enabled; 57 extern int atapi_dmadir; 58 extern int libata_fua; 59 extern int libata_noacpi; 60 extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev); 61 extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev, 62 u64 block, u32 n_block, unsigned int tf_flags, 63 unsigned int tag); 64 extern u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev); 65 extern void ata_dev_disable(struct ata_device *dev); 66 extern void ata_port_flush_task(struct ata_port *ap); 67 extern unsigned ata_exec_internal(struct ata_device *dev, 68 struct ata_taskfile *tf, const u8 *cdb, 69 int dma_dir, void *buf, unsigned int buflen); 70 extern unsigned ata_exec_internal_sg(struct ata_device *dev, 71 struct ata_taskfile *tf, const u8 *cdb, 72 int dma_dir, struct scatterlist *sg, 73 unsigned int n_elem); 74 extern unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd); 75 extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class, 76 unsigned int flags, u16 *id); 77 extern int ata_dev_revalidate(struct ata_device *dev, unsigned int flags); 78 extern int ata_dev_configure(struct ata_device *dev); 79 extern int sata_down_spd_limit(struct ata_port *ap); 80 extern int sata_set_spd_needed(struct ata_port *ap); 81 extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel); 82 extern int ata_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev); 83 extern void ata_sg_clean(struct ata_queued_cmd *qc); 84 extern void ata_qc_free(struct ata_queued_cmd *qc); 85 extern void ata_qc_issue(struct ata_queued_cmd *qc); 86 extern void __ata_qc_complete(struct ata_queued_cmd *qc); 87 extern int ata_check_atapi_dma(struct ata_queued_cmd *qc); 88 extern void ata_dev_select(struct ata_port *ap, unsigned int device, 89 unsigned int wait, unsigned int can_sleep); 90 extern void swap_buf_le16(u16 *buf, unsigned int buf_words); 91 extern int ata_flush_cache(struct ata_device *dev); 92 extern void ata_dev_init(struct ata_device *dev); 93 extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg); 94 extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg); 95 extern void ata_port_init(struct ata_port *ap, struct ata_host *host, 96 const struct ata_probe_ent *ent, unsigned int port_no); 97 extern struct ata_probe_ent *ata_probe_ent_alloc(struct device *dev, 98 const struct ata_port_info *port); 99 100 /* libata-acpi.c */ 101 #ifdef CONFIG_SATA_ACPI 102 extern int ata_acpi_exec_tfs(struct ata_port *ap); 103 extern int ata_acpi_push_id(struct ata_port *ap, unsigned int ix); 104 #else 105 static inline int ata_acpi_exec_tfs(struct ata_port *ap) 106 { 107 return 0; 108 } 109 static inline int ata_acpi_push_id(struct ata_port *ap, unsigned int ix) 110 { 111 return 0; 112 } 113 #endif 114 115 /* libata-scsi.c */ 116 extern struct scsi_transport_template ata_scsi_transport_template; 117 118 extern void ata_scsi_scan_host(struct ata_port *ap); 119 extern int ata_scsi_offline_dev(struct ata_device *dev); 120 extern void ata_scsi_hotplug(struct work_struct *work); 121 extern unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf, 122 unsigned int buflen); 123 124 extern unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf, 125 unsigned int buflen); 126 127 extern unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf, 128 unsigned int buflen); 129 extern unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf, 130 unsigned int buflen); 131 extern unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf, 132 unsigned int buflen); 133 extern unsigned int ata_scsiop_sync_cache(struct ata_scsi_args *args, u8 *rbuf, 134 unsigned int buflen); 135 extern unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf, 136 unsigned int buflen); 137 extern unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf, 138 unsigned int buflen); 139 extern unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf, 140 unsigned int buflen); 141 extern void ata_scsi_badcmd(struct scsi_cmnd *cmd, 142 void (*done)(struct scsi_cmnd *), 143 u8 asc, u8 ascq); 144 extern void ata_scsi_set_sense(struct scsi_cmnd *cmd, 145 u8 sk, u8 asc, u8 ascq); 146 extern void ata_scsi_rbuf_fill(struct ata_scsi_args *args, 147 unsigned int (*actor) (struct ata_scsi_args *args, 148 u8 *rbuf, unsigned int buflen)); 149 extern void ata_schedule_scsi_eh(struct Scsi_Host *shost); 150 extern void ata_scsi_dev_rescan(struct work_struct *work); 151 extern int ata_bus_probe(struct ata_port *ap); 152 153 /* libata-eh.c */ 154 extern enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd); 155 extern void ata_scsi_error(struct Scsi_Host *host); 156 extern void ata_port_wait_eh(struct ata_port *ap); 157 extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc); 158 159 /* libata-sff.c */ 160 extern u8 ata_irq_on(struct ata_port *ap); 161 162 163 #endif /* __LIBATA_H__ */ 164