2  *  Copyright 2003-2005 Red Hat, Inc.  All rights reserved.
3  *  Copyright 2003-2005 Jeff Garzik
32 #include <linux/dma-mapping.h>
43  * Define if arch has non-standard setup.  This is a _PCI_ standard
47 #include <asm/libata-portmap.h>
49 #include <asm-generic/libata-portmap.h>
53  * compile-time options: to be removed as soon as all the drivers are
75 #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func…
101 #define ata_msg_drv(p)    ((p)->msg_enable & ATA_MSG_DRV)
102 #define ata_msg_info(p)   ((p)->msg_enable & ATA_MSG_INFO)
103 #define ata_msg_probe(p)  ((p)->msg_enable & ATA_MSG_PROBE)
104 #define ata_msg_warn(p)   ((p)->msg_enable & ATA_MSG_WARN)
105 #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
106 #define ata_msg_ctl(p)    ((p)->msg_enable & ATA_MSG_CTL)
107 #define ata_msg_intr(p)   ((p)->msg_enable & ATA_MSG_INTR)
108 #define ata_msg_err(p)    ((p)->msg_enable & ATA_MSG_ERR)
113 		return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */  in ata_msg_init()
116 	return (1 << dval) - 1;  in ata_msg_init()
127 	/* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
129 	ATA_TAG_INTERNAL	= ATA_MAX_QUEUE - 1,
134 	ATA_ALL_DEVICES		= (1 << ATA_MAX_DEVICES) - 1,
138 	ATA_SHT_THIS_ID		= -1,
151 	ATA_DFLAG_CFG_MASK	= (1 << 12) - 1,
154 	ATA_DFLAG_NCQ_OFF	= (1 << 13), /* device limited to non-NCQ mode */
159 	ATA_DFLAG_INIT_MASK	= (1 << 24) - 1,
199 	ATA_FLAG_FPDMA_AA		= (1 << 14), /* driver supports Auto-Activate */
211 	/* bits 24:31 of ap->flags are reserved for LLD specific flags */
251 	/* bits 24:31 of host->flags are reserved for LLD specific flags */
279 	/* If PMP is supported, we have to do follow-up SRST.  As some
320 	/* return values for ->qc_defer */
329 	ATA_EH_SOFTRESET	= (1 << 1), /* meaningful only in ->prereset */
330 	ATA_EH_HARDRESET	= (1 << 2), /* meaningful only in ->prereset */
339 	/* ata_eh_info->flags */
345 	ATA_EHI_DID_SOFTRESET	= (1 << 16), /* already soft-reset this port */
346 	ATA_EHI_DID_HARDRESET	= (1 << 17), /* already soft-reset this port */
356 	/* max tries if error condition is still set after ->error_handler */
371 	 * ata_eh_cmd_timeout_table in libata-eh.c.
381 	ATA_HORKAGE_MAX_SEC_128	= (1 << 3),	/* Limit max sects to 128 */
406 	ATAPI_PASS_THRU		= 3,		/* SAT pass-thru */
431 	ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3,	/* FPDMA non-zero offset */
440 	ATA_MASK_PIO		= ((1LU << ATA_NR_PIO_MODES) - 1)
442 	ATA_MASK_MWDMA		= ((1LU << ATA_NR_MWDMA_MODES) - 1)
444 	ATA_MASK_UDMA		= ((1LU << ATA_NR_UDMA_MODES) - 1)
473  * alter libata-scsi.c (for the ascii descriptions)
635 	unsigned int		max_sectors;	/* per-device max sectors */
638 	/* per-dev xfer mask */
668 	unsigned int		err_mask;	/* port-wide err_mask */
731 	struct Scsi_Host	*scsi_host; /* our co-allocated scsi host */
737 	/* Flags that change dynamically, protected by ap->lock */
808  * ERR_PTR(-ENOENT).  Unfortunately, ERR_PTR doesn't render a constant
811 #define ATA_OP_NULL		(void *)(unsigned long)(-ENOENT)
908 	 * ->inherits must be the last field and all the preceding
927 	unsigned short act8b;		/* t2 for 8-bit I/O */
928 	unsigned short rec8b;		/* t2i for 8-bit I/O */
929 	unsigned short cyc8b;		/* t0 for 8-bit I/O */
938  * Core layer - drivers/ata/libata-core.c
950 	if (ehc->i.flags & ATA_EHI_HOTPLUGGED)  in sata_ehc_deb_timing()
958 	return ap->ops == &ata_dummy_port_ops;  in ata_port_is_dummy()
1101  * ACPI - drivers/ata/libata-acpi.c
1106 	if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)  in ata_acpi_init_gtm()
1107 		return &ap->__acpi_init_gtm;  in ata_acpi_init_gtm()
1124 	return -ENOSYS;  in ata_acpi_stm()
1130 	return -ENOSYS;  in ata_acpi_gtm()
1147  * EH - drivers/ata/libata-eh.c
1220 	return ap->flags & ATA_FLAG_PMP;  in sata_pmp_supported()
1225 	return ap->nr_pmp_links != 0;  in sata_pmp_attached()
1230 	return link == &link->ap->link || link == link->ap->slave_link;  in ata_is_host_link()
1251 	if (sata_pmp_supported(link->ap) && ata_is_host_link(link))  in sata_srst_pmp()
1253 	return link->pmp;  in sata_srst_pmp()
1315 	ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;  in ata_ehi_hotplugged()
1316 	ehi->flags |= ATA_EHI_HOTPLUGGED;  in ata_ehi_hotplugged()
1317 	ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;  in ata_ehi_hotplugged()
1318 	ehi->err_mask |= AC_ERR_ATA_BUS;  in ata_ehi_hotplugged()
1363 	return ata_class_enabled(dev->class);  in ata_dev_enabled()
1368 	return ata_class_disabled(dev->class);  in ata_dev_disabled()
1373 	return ata_class_absent(dev->class);  in ata_dev_absent()
1381 	if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)  in ata_link_max_devices()
1388 	return ata_tag_valid(link->active_tag) || link->sactive;  in ata_link_active()
1438  * impossible to use ATA_LITER_* for device iteration or vice-versa.
1449  *	ata_ncq_enabled - Test whether NCQ is enabled
1460 	return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |  in ata_ncq_enabled()
1466 	qc->tf.ctl |= ATA_NIEN;  in ata_qc_set_polling()
1473 		return &ap->qcmd[tag];  in __ata_qc_from_tag()
1482 	if (unlikely(!qc) || !ap->ops->error_handler)  in ata_qc_from_tag()
1485 	if ((qc->flags & (ATA_QCFLAG_ACTIVE |  in ata_qc_from_tag()
1494 	return qc->nbytes - min(qc->extrabytes, qc->nbytes);  in ata_qc_raw_nbytes()
1502 	tf->ctl = dev->link->ap->ctl;  in ata_tf_init()
1504 	tf->ctl = ATA_DEVCTL_OBS;  in ata_tf_init()
1506 	if (dev->devno == 0)  in ata_tf_init()
1507 		tf->device = ATA_DEVICE_OBS;  in ata_tf_init()
1509 		tf->device = ATA_DEVICE_OBS | ATA_DEV1;  in ata_tf_init()
1514 	qc->dma_dir = DMA_NONE;  in ata_qc_reinit()
1515 	qc->sg = NULL;  in ata_qc_reinit()
1516 	qc->flags = 0;  in ata_qc_reinit()
1517 	qc->cursg = NULL;  in ata_qc_reinit()
1518 	qc->cursg_ofs = 0;  in ata_qc_reinit()
1519 	qc->nbytes = qc->extrabytes = qc->curbytes = 0;  in ata_qc_reinit()
1520 	qc->n_elem = 0;  in ata_qc_reinit()
1521 	qc->err_mask = 0;  in ata_qc_reinit()
1522 	qc->sect_size = ATA_SECT_SIZE;  in ata_qc_reinit()
1524 	ata_tf_init(qc->dev, &qc->tf);  in ata_qc_reinit()
1527 	qc->result_tf.command = ATA_DRDY;  in ata_qc_reinit()
1528 	qc->result_tf.feature = 0;  in ata_qc_reinit()
1533 	return ata_id_wcache_enabled(dev->id) ||  in ata_try_flush_cache()
1534 	       ata_id_has_flush(dev->id) ||  in ata_try_flush_cache()
1535 	       ata_id_has_flush_ext(dev->id);  in ata_try_flush_cache()
1557 	return *(struct ata_port **)&host->hostdata[0];  in ata_shost_to_port()
1567 		return -ENODEV;  in ata_check_ready()
1584 	if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)  in ata_using_mwdma()
1591 	if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)  in ata_using_udma()
1598 	return (adev->dma_mode == 0xFF ? 0 : 1);  in ata_dma_enabled()
1602  * PMP - drivers/ata/libata-pmp.c
1621  * SFF - drivers/ata/libata-sff.c
1732  *	ata_sff_busy_wait - Wait for a port status register
1735  *	@max: number of 10uS waits to perform
1737  *	Waits up to max*10 microseconds for the selected bits in the port's
1745 				   unsigned int max)  in ata_sff_busy_wait()  argument
1751 		status = ap->ops->sff_check_status(ap);  in ata_sff_busy_wait()
1752 		max--;  in ata_sff_busy_wait()
1753 	} while (status != 0xff && (status & bits) && (max > 0));  in ata_sff_busy_wait()
1759  *	ata_wait_idle - Wait for a port to be idle.