[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / ata / ahci.h

/*
 *  ahci.h - Common AHCI SATA definitions and declarations
 *
 *  Maintained by:  Tejun Heo <tj@kernel.org>
 *    		    Please ALWAYS copy linux-ide@vger.kernel.org
 *		    on emails.
 *
 *  Copyright 2004-2005 Red Hat, Inc.
 *
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *
 * libata documentation is available via 'make {ps|pdf}docs',
 * as Documentation/DocBook/libata.*
 *
 * AHCI hardware documentation:
 * http://www.intel.com/technology/serialata/pdf/rev1_0.pdf
 * http://www.intel.com/technology/serialata/pdf/rev1_1.pdf
 *
 */

#ifndef _AHCI_H
#define _AHCI_H

#include <linux/clk.h>
#include <linux/libata.h>

/* Enclosure Management Control */
#define EM_CTRL_MSG_TYPE              0x000f0000

/* Enclosure Management LED Message Type */
#define EM_MSG_LED_HBA_PORT           0x0000000f
#define EM_MSG_LED_PMP_SLOT           0x0000ff00
#define EM_MSG_LED_VALUE              0xffff0000
#define EM_MSG_LED_VALUE_ACTIVITY     0x00070000
#define EM_MSG_LED_VALUE_OFF          0xfff80000
#define EM_MSG_LED_VALUE_ON           0x00010000

enum {
	AHCI_MAX_PORTS		= 32,
	AHCI_MAX_SG		= 168, /* hardware max is 64K */
	AHCI_DMA_BOUNDARY	= 0xffffffff,
	AHCI_MAX_CMDS		= 32,
	AHCI_CMD_SZ		= 32,
	AHCI_CMD_SLOT_SZ	= AHCI_MAX_CMDS * AHCI_CMD_SZ,
	AHCI_RX_FIS_SZ		= 256,
	AHCI_CMD_TBL_CDB	= 0x40,
	AHCI_CMD_TBL_HDR_SZ	= 0x80,
	AHCI_CMD_TBL_SZ		= AHCI_CMD_TBL_HDR_SZ + (AHCI_MAX_SG * 16),
	AHCI_CMD_TBL_AR_SZ	= AHCI_CMD_TBL_SZ * AHCI_MAX_CMDS,
	AHCI_PORT_PRIV_DMA_SZ	= AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_AR_SZ +
				  AHCI_RX_FIS_SZ,
	AHCI_PORT_PRIV_FBS_DMA_SZ	= AHCI_CMD_SLOT_SZ +
					  AHCI_CMD_TBL_AR_SZ +
					  (AHCI_RX_FIS_SZ * 16),
	AHCI_IRQ_ON_SG		= (1 << 31),
	AHCI_CMD_ATAPI		= (1 << 5),
	AHCI_CMD_WRITE		= (1 << 6),
	AHCI_CMD_PREFETCH	= (1 << 7),
	AHCI_CMD_RESET		= (1 << 8),
	AHCI_CMD_CLR_BUSY	= (1 << 10),

	RX_FIS_PIO_SETUP	= 0x20,	/* offset of PIO Setup FIS data */
	RX_FIS_D2H_REG		= 0x40,	/* offset of D2H Register FIS data */
	RX_FIS_SDB		= 0x58, /* offset of SDB FIS data */
	RX_FIS_UNK		= 0x60, /* offset of Unknown FIS data */

	/* global controller registers */
	HOST_CAP		= 0x00, /* host capabilities */
	HOST_CTL		= 0x04, /* global host control */
	HOST_IRQ_STAT		= 0x08, /* interrupt status */
	HOST_PORTS_IMPL		= 0x0c, /* bitmap of implemented ports */
	HOST_VERSION		= 0x10, /* AHCI spec. version compliancy */
	HOST_EM_LOC		= 0x1c, /* Enclosure Management location */
	HOST_EM_CTL		= 0x20, /* Enclosure Management Control */
	HOST_CAP2		= 0x24, /* host capabilities, extended */

	/* HOST_CTL bits */
	HOST_RESET		= (1 << 0),  /* reset controller; self-clear */
	HOST_IRQ_EN		= (1 << 1),  /* global IRQ enable */
	HOST_AHCI_EN		= (1 << 31), /* AHCI enabled */

	/* HOST_CAP bits */
	HOST_CAP_SXS		= (1 << 5),  /* Supports External SATA */
	HOST_CAP_EMS		= (1 << 6),  /* Enclosure Management support */
	HOST_CAP_CCC		= (1 << 7),  /* Command Completion Coalescing */
	HOST_CAP_PART		= (1 << 13), /* Partial state capable */
	HOST_CAP_SSC		= (1 << 14), /* Slumber state capable */
	HOST_CAP_PIO_MULTI	= (1 << 15), /* PIO multiple DRQ support */
	HOST_CAP_FBS		= (1 << 16), /* FIS-based switching support */
	HOST_CAP_PMP		= (1 << 17), /* Port Multiplier support */
	HOST_CAP_ONLY		= (1 << 18), /* Supports AHCI mode only */
	HOST_CAP_CLO		= (1 << 24), /* Command List Override support */
	HOST_CAP_LED		= (1 << 25), /* Supports activity LED */
	HOST_CAP_ALPM		= (1 << 26), /* Aggressive Link PM support */
	HOST_CAP_SSS		= (1 << 27), /* Staggered Spin-up */
	HOST_CAP_MPS		= (1 << 28), /* Mechanical presence switch */
	HOST_CAP_SNTF		= (1 << 29), /* SNotification register */
	HOST_CAP_NCQ		= (1 << 30), /* Native Command Queueing */
	HOST_CAP_64		= (1 << 31), /* PCI DAC (64-bit DMA) support */

	/* HOST_CAP2 bits */
	HOST_CAP2_BOH		= (1 << 0),  /* BIOS/OS handoff supported */
	HOST_CAP2_NVMHCI	= (1 << 1),  /* NVMHCI supported */
	HOST_CAP2_APST		= (1 << 2),  /* Automatic partial to slumber */
	HOST_CAP2_SDS		= (1 << 3),  /* Support device sleep */
	HOST_CAP2_SADM		= (1 << 4),  /* Support aggressive DevSlp */
	HOST_CAP2_DESO		= (1 << 5),  /* DevSlp from slumber only */

	/* registers for each SATA port */
	PORT_LST_ADDR		= 0x00, /* command list DMA addr */
	PORT_LST_ADDR_HI	= 0x04, /* command list DMA addr hi */
	PORT_FIS_ADDR		= 0x08, /* FIS rx buf addr */
	PORT_FIS_ADDR_HI	= 0x0c, /* FIS rx buf addr hi */
	PORT_IRQ_STAT		= 0x10, /* interrupt status */
	PORT_IRQ_MASK		= 0x14, /* interrupt enable/disable mask */
	PORT_CMD		= 0x18, /* port command */
	PORT_TFDATA		= 0x20,	/* taskfile data */
	PORT_SIG		= 0x24,	/* device TF signature */
	PORT_CMD_ISSUE		= 0x38, /* command issue */
	PORT_SCR_STAT		= 0x28, /* SATA phy register: SStatus */
	PORT_SCR_CTL		= 0x2c, /* SATA phy register: SControl */
	PORT_SCR_ERR		= 0x30, /* SATA phy register: SError */
	PORT_SCR_ACT		= 0x34, /* SATA phy register: SActive */
	PORT_SCR_NTF		= 0x3c, /* SATA phy register: SNotification */
	PORT_FBS		= 0x40, /* FIS-based Switching */
	PORT_DEVSLP		= 0x44, /* device sleep */

	/* PORT_IRQ_{STAT,MASK} bits */
	PORT_IRQ_COLD_PRES	= (1 << 31), /* cold presence detect */
	PORT_IRQ_TF_ERR		= (1 << 30), /* task file error */
	PORT_IRQ_HBUS_ERR	= (1 << 29), /* host bus fatal error */
	PORT_IRQ_HBUS_DATA_ERR	= (1 << 28), /* host bus data error */
	PORT_IRQ_IF_ERR		= (1 << 27), /* interface fatal error */
	PORT_IRQ_IF_NONFATAL	= (1 << 26), /* interface non-fatal error */
	PORT_IRQ_OVERFLOW	= (1 << 24), /* xfer exhausted available S/G */
	PORT_IRQ_BAD_PMP	= (1 << 23), /* incorrect port multiplier */

	PORT_IRQ_PHYRDY		= (1 << 22), /* PhyRdy changed */
	PORT_IRQ_DEV_ILCK	= (1 << 7), /* device interlock */
	PORT_IRQ_CONNECT	= (1 << 6), /* port connect change status */
	PORT_IRQ_SG_DONE	= (1 << 5), /* descriptor processed */
	PORT_IRQ_UNK_FIS	= (1 << 4), /* unknown FIS rx'd */
	PORT_IRQ_SDB_FIS	= (1 << 3), /* Set Device Bits FIS rx'd */
	PORT_IRQ_DMAS_FIS	= (1 << 2), /* DMA Setup FIS rx'd */
	PORT_IRQ_PIOS_FIS	= (1 << 1), /* PIO Setup FIS rx'd */
	PORT_IRQ_D2H_REG_FIS	= (1 << 0), /* D2H Register FIS rx'd */

	PORT_IRQ_FREEZE		= PORT_IRQ_HBUS_ERR |
				  PORT_IRQ_IF_ERR |
				  PORT_IRQ_CONNECT |
				  PORT_IRQ_PHYRDY |
				  PORT_IRQ_UNK_FIS |
				  PORT_IRQ_BAD_PMP,
	PORT_IRQ_ERROR		= PORT_IRQ_FREEZE |
				  PORT_IRQ_TF_ERR |
				  PORT_IRQ_HBUS_DATA_ERR,
	DEF_PORT_IRQ		= PORT_IRQ_ERROR | PORT_IRQ_SG_DONE |
				  PORT_IRQ_SDB_FIS | PORT_IRQ_DMAS_FIS |
				  PORT_IRQ_PIOS_FIS | PORT_IRQ_D2H_REG_FIS,

	/* PORT_CMD bits */
	PORT_CMD_ASP		= (1 << 27), /* Aggressive Slumber/Partial */
	PORT_CMD_ALPE		= (1 << 26), /* Aggressive Link PM enable */
	PORT_CMD_ATAPI		= (1 << 24), /* Device is ATAPI */
	PORT_CMD_FBSCP		= (1 << 22), /* FBS Capable Port */
	PORT_CMD_PMP		= (1 << 17), /* PMP attached */
	PORT_CMD_LIST_ON	= (1 << 15), /* cmd list DMA engine running */
	PORT_CMD_FIS_ON		= (1 << 14), /* FIS DMA engine running */
	PORT_CMD_FIS_RX		= (1 << 4), /* Enable FIS receive DMA engine */
	PORT_CMD_CLO		= (1 << 3), /* Command list override */
	PORT_CMD_POWER_ON	= (1 << 2), /* Power up device */
	PORT_CMD_SPIN_UP	= (1 << 1), /* Spin up device */
	PORT_CMD_START		= (1 << 0), /* Enable port DMA engine */

	PORT_CMD_ICC_MASK	= (0xf << 28), /* i/f ICC state mask */
	PORT_CMD_ICC_ACTIVE	= (0x1 << 28), /* Put i/f in active state */
	PORT_CMD_ICC_PARTIAL	= (0x2 << 28), /* Put i/f in partial state */
	PORT_CMD_ICC_SLUMBER	= (0x6 << 28), /* Put i/f in slumber state */

	/* PORT_FBS bits */
	PORT_FBS_DWE_OFFSET	= 16, /* FBS device with error offset */
	PORT_FBS_ADO_OFFSET	= 12, /* FBS active dev optimization offset */
	PORT_FBS_DEV_OFFSET	= 8,  /* FBS device to issue offset */
	PORT_FBS_DEV_MASK	= (0xf << PORT_FBS_DEV_OFFSET),  /* FBS.DEV */
	PORT_FBS_SDE		= (1 << 2), /* FBS single device error */
	PORT_FBS_DEC		= (1 << 1), /* FBS device error clear */
	PORT_FBS_EN		= (1 << 0), /* Enable FBS */

	/* PORT_DEVSLP bits */
	PORT_DEVSLP_DM_OFFSET	= 25,             /* DITO multiplier offset */
	PORT_DEVSLP_DM_MASK	= (0xf << 25),    /* DITO multiplier mask */
	PORT_DEVSLP_DITO_OFFSET	= 15,             /* DITO offset */
	PORT_DEVSLP_MDAT_OFFSET	= 10,             /* Minimum assertion time */
	PORT_DEVSLP_DETO_OFFSET	= 2,              /* DevSlp exit timeout */
	PORT_DEVSLP_DSP		= (1 << 1),       /* DevSlp present */
	PORT_DEVSLP_ADSE	= (1 << 0),       /* Aggressive DevSlp enable */

	/* hpriv->flags bits */

#define AHCI_HFLAGS(flags)		.private_data	= (void *)(flags)

	AHCI_HFLAG_NO_NCQ		= (1 << 0),
	AHCI_HFLAG_IGN_IRQ_IF_ERR	= (1 << 1), /* ignore IRQ_IF_ERR */
	AHCI_HFLAG_IGN_SERR_INTERNAL	= (1 << 2), /* ignore SERR_INTERNAL */
	AHCI_HFLAG_32BIT_ONLY		= (1 << 3), /* force 32bit */
	AHCI_HFLAG_MV_PATA		= (1 << 4), /* PATA port */
	AHCI_HFLAG_NO_MSI		= (1 << 5), /* no PCI MSI */
	AHCI_HFLAG_NO_PMP		= (1 << 6), /* no PMP */
	AHCI_HFLAG_SECT255		= (1 << 8), /* max 255 sectors */
	AHCI_HFLAG_YES_NCQ		= (1 << 9), /* force NCQ cap on */
	AHCI_HFLAG_NO_SUSPEND		= (1 << 10), /* don't suspend */
	AHCI_HFLAG_SRST_TOUT_IS_OFFLINE	= (1 << 11), /* treat SRST timeout as
							link offline */
	AHCI_HFLAG_NO_SNTF		= (1 << 12), /* no sntf */
	AHCI_HFLAG_NO_FPDMA_AA		= (1 << 13), /* no FPDMA AA */
	AHCI_HFLAG_YES_FBS		= (1 << 14), /* force FBS cap on */
	AHCI_HFLAG_DELAY_ENGINE		= (1 << 15), /* do not start engine on
						        port start (wait until
						        error-handling stage) */
	AHCI_HFLAG_MULTI_MSI		= (1 << 16), /* multiple PCI MSIs */

	/* ap->flags bits */

	AHCI_FLAG_COMMON		= ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
					  ATA_FLAG_ACPI_SATA | ATA_FLAG_AN,

	ICH_MAP				= 0x90, /* ICH MAP register */

	/* em constants */
	EM_MAX_SLOTS			= 8,
	EM_MAX_RETRY			= 5,

	/* em_ctl bits */
	EM_CTL_RST		= (1 << 9), /* Reset */
	EM_CTL_TM		= (1 << 8), /* Transmit Message */
	EM_CTL_MR		= (1 << 0), /* Message Received */
	EM_CTL_ALHD		= (1 << 26), /* Activity LED */
	EM_CTL_XMT		= (1 << 25), /* Transmit Only */
	EM_CTL_SMB		= (1 << 24), /* Single Message Buffer */
	EM_CTL_SGPIO		= (1 << 19), /* SGPIO messages supported */
	EM_CTL_SES		= (1 << 18), /* SES-2 messages supported */
	EM_CTL_SAFTE		= (1 << 17), /* SAF-TE messages supported */
	EM_CTL_LED		= (1 << 16), /* LED messages supported */

	/* em message type */
	EM_MSG_TYPE_LED		= (1 << 0), /* LED */
	EM_MSG_TYPE_SAFTE	= (1 << 1), /* SAF-TE */
	EM_MSG_TYPE_SES2	= (1 << 2), /* SES-2 */
	EM_MSG_TYPE_SGPIO	= (1 << 3), /* SGPIO */
};

struct ahci_cmd_hdr {
	__le32			opts;
	__le32			status;
	__le32			tbl_addr;
	__le32			tbl_addr_hi;
	__le32			reserved[4];
};

struct ahci_sg {
	__le32			addr;
	__le32			addr_hi;
	__le32			reserved;
	__le32			flags_size;
};

struct ahci_em_priv {
	enum sw_activity blink_policy;
	struct timer_list timer;
	unsigned long saved_activity;
	unsigned long activity;
	unsigned long led_state;
};

struct ahci_port_priv {
	struct ata_link		*active_link;
	struct ahci_cmd_hdr	*cmd_slot;
	dma_addr_t		cmd_slot_dma;
	void			*cmd_tbl;
	dma_addr_t		cmd_tbl_dma;
	void			*rx_fis;
	dma_addr_t		rx_fis_dma;
	/* for NCQ spurious interrupt analysis */
	unsigned int		ncq_saw_d2h:1;
	unsigned int		ncq_saw_dmas:1;
	unsigned int		ncq_saw_sdb:1;
	u32			intr_status;	/* interrupts to handle */
	spinlock_t		lock;		/* protects parent ata_port */
	u32 			intr_mask;	/* interrupts to enable */
	bool			fbs_supported;	/* set iff FBS is supported */
	bool			fbs_enabled;	/* set iff FBS is enabled */
	int			fbs_last_dev;	/* save FBS.DEV of last FIS */
	/* enclosure management info per PM slot */
	struct ahci_em_priv	em_priv[EM_MAX_SLOTS];
};

struct ahci_host_priv {
	void __iomem *		mmio;		/* bus-independent mem map */
	unsigned int		flags;		/* AHCI_HFLAG_* */
	u32			cap;		/* cap to use */
	u32			cap2;		/* cap2 to use */
	u32			port_map;	/* port map to use */
	u32			saved_cap;	/* saved initial cap */
	u32			saved_cap2;	/* saved initial cap2 */
	u32			saved_port_map;	/* saved initial port_map */
	u32 			em_loc; /* enclosure management location */
	u32			em_buf_sz;	/* EM buffer size in byte */
	u32			em_msg_type;	/* EM message type */
	struct clk		*clk;		/* Only for platforms supporting clk */
};

extern int ahci_ignore_sss;

extern struct device_attribute *ahci_shost_attrs[];
extern struct device_attribute *ahci_sdev_attrs[];

#define AHCI_SHT(drv_name)						\
	ATA_NCQ_SHT(drv_name),						\
	.can_queue		= AHCI_MAX_CMDS - 1,			\
	.sg_tablesize		= AHCI_MAX_SG,				\
	.dma_boundary		= AHCI_DMA_BOUNDARY,			\
	.shost_attrs		= ahci_shost_attrs,			\
	.sdev_attrs		= ahci_sdev_attrs

extern struct ata_port_operations ahci_ops;
extern struct ata_port_operations ahci_pmp_retry_srst_ops;

unsigned int ahci_dev_classify(struct ata_port *ap);
void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
			u32 opts);
void ahci_save_initial_config(struct device *dev,
			      struct ahci_host_priv *hpriv,
			      unsigned int force_port_map,
			      unsigned int mask_port_map);
void ahci_init_controller(struct ata_host *host);
int ahci_reset_controller(struct ata_host *host);

int ahci_do_softreset(struct ata_link *link, unsigned int *class,
		      int pmp, unsigned long deadline,
		      int (*check_ready)(struct ata_link *link));

int ahci_stop_engine(struct ata_port *ap);
void ahci_start_engine(struct ata_port *ap);
int ahci_check_ready(struct ata_link *link);
int ahci_kick_engine(struct ata_port *ap);
int ahci_port_resume(struct ata_port *ap);
void ahci_set_em_messages(struct ahci_host_priv *hpriv,
			  struct ata_port_info *pi);
int ahci_reset_em(struct ata_host *host);
irqreturn_t ahci_interrupt(int irq, void *dev_instance);
irqreturn_t ahci_hw_interrupt(int irq, void *dev_instance);
irqreturn_t ahci_thread_fn(int irq, void *dev_instance);
void ahci_print_info(struct ata_host *host, const char *scc_s);
int ahci_host_activate(struct ata_host *host, int irq, unsigned int n_msis);

static inline void __iomem *__ahci_port_base(struct ata_host *host,
					     unsigned int port_no)
{
	struct ahci_host_priv *hpriv = host->private_data;
	void __iomem *mmio = hpriv->mmio;

	return mmio + 0x100 + (port_no * 0x80);
}

static inline void __iomem *ahci_port_base(struct ata_port *ap)
{
	return __ahci_port_base(ap->host, ap->port_no);
}

static inline int ahci_nr_ports(u32 cap)
{
	return (cap & 0x1f) + 1;
}

#endif /* _AHCI_H */
Commit	Line	Data
365cfa1e AV	1	/*
	2	* ahci.h - Common AHCI SATA definitions and declarations
	3	*
8c3d3d4b	4	* Maintained by: Tejun Heo <tj@kernel.org>
365cfa1e AV	5	* Please ALWAYS copy linux-ide@vger.kernel.org
	6	* on emails.
	7	*
	8	* Copyright 2004-2005 Red Hat, Inc.
	9	*
	10	*
	11	* This program is free software; you can redistribute it and/or modify
	12	* it under the terms of the GNU General Public License as published by
	13	* the Free Software Foundation; either version 2, or (at your option)
	14	* any later version.
	15	*
	16	* This program is distributed in the hope that it will be useful,
	17	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	* GNU General Public License for more details.
	20	*
	21	* You should have received a copy of the GNU General Public License
	22	* along with this program; see the file COPYING. If not, write to
	23	* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
	24	*
	25	*
	26	* libata documentation is available via 'make {ps\|pdf}docs',
	27	* as Documentation/DocBook/libata.*
	28	*
	29	* AHCI hardware documentation:
	30	* http://www.intel.com/technology/serialata/pdf/rev1_0.pdf
	31	* http://www.intel.com/technology/serialata/pdf/rev1_1.pdf
	32	*
	33	*/
	34
	35	#ifndef _AHCI_H
	36	#define _AHCI_H
	37
f1e70c2c	38	#include <linux/clk.h>
365cfa1e AV	39	#include <linux/libata.h>
	40
	41	/* Enclosure Management Control */
	42	#define EM_CTRL_MSG_TYPE 0x000f0000
	43
	44	/* Enclosure Management LED Message Type */
	45	#define EM_MSG_LED_HBA_PORT 0x0000000f
	46	#define EM_MSG_LED_PMP_SLOT 0x0000ff00
	47	#define EM_MSG_LED_VALUE 0xffff0000
	48	#define EM_MSG_LED_VALUE_ACTIVITY 0x00070000
	49	#define EM_MSG_LED_VALUE_OFF 0xfff80000
	50	#define EM_MSG_LED_VALUE_ON 0x00010000
	51
	52	enum {
	53	AHCI_MAX_PORTS = 32,
	54	AHCI_MAX_SG = 168, /* hardware max is 64K */
	55	AHCI_DMA_BOUNDARY = 0xffffffff,
	56	AHCI_MAX_CMDS = 32,
	57	AHCI_CMD_SZ = 32,
	58	AHCI_CMD_SLOT_SZ = AHCI_MAX_CMDS * AHCI_CMD_SZ,
	59	AHCI_RX_FIS_SZ = 256,
	60	AHCI_CMD_TBL_CDB = 0x40,
	61	AHCI_CMD_TBL_HDR_SZ = 0x80,
	62	AHCI_CMD_TBL_SZ = AHCI_CMD_TBL_HDR_SZ + (AHCI_MAX_SG * 16),
	63	AHCI_CMD_TBL_AR_SZ = AHCI_CMD_TBL_SZ * AHCI_MAX_CMDS,
	64	AHCI_PORT_PRIV_DMA_SZ = AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_AR_SZ +
	65	AHCI_RX_FIS_SZ,
	66	AHCI_PORT_PRIV_FBS_DMA_SZ = AHCI_CMD_SLOT_SZ +
	67	AHCI_CMD_TBL_AR_SZ +
	68	(AHCI_RX_FIS_SZ * 16),
	69	AHCI_IRQ_ON_SG = (1 << 31),
	70	AHCI_CMD_ATAPI = (1 << 5),
	71	AHCI_CMD_WRITE = (1 << 6),
	72	AHCI_CMD_PREFETCH = (1 << 7),
	73	AHCI_CMD_RESET = (1 << 8),
	74	AHCI_CMD_CLR_BUSY = (1 << 10),
	75
6ad60195	76	RX_FIS_PIO_SETUP = 0x20, /* offset of PIO Setup FIS data */
365cfa1e AV	77	RX_FIS_D2H_REG = 0x40, /* offset of D2H Register FIS data */
	78	RX_FIS_SDB = 0x58, /* offset of SDB FIS data */
	79	RX_FIS_UNK = 0x60, /* offset of Unknown FIS data */
	80
	81	/* global controller registers */
	82	HOST_CAP = 0x00, /* host capabilities */
	83	HOST_CTL = 0x04, /* global host control */
	84	HOST_IRQ_STAT = 0x08, /* interrupt status */
	85	HOST_PORTS_IMPL = 0x0c, /* bitmap of implemented ports */
	86	HOST_VERSION = 0x10, /* AHCI spec. version compliancy */
	87	HOST_EM_LOC = 0x1c, /* Enclosure Management location */
	88	HOST_EM_CTL = 0x20, /* Enclosure Management Control */
	89	HOST_CAP2 = 0x24, /* host capabilities, extended */
	90
	91	/* HOST_CTL bits */
	92	HOST_RESET = (1 << 0), /* reset controller; self-clear */
	93	HOST_IRQ_EN = (1 << 1), /* global IRQ enable */
	94	HOST_AHCI_EN = (1 << 31), /* AHCI enabled */
	95
	96	/* HOST_CAP bits */
	97	HOST_CAP_SXS = (1 << 5), /* Supports External SATA */
	98	HOST_CAP_EMS = (1 << 6), /* Enclosure Management support */
	99	HOST_CAP_CCC = (1 << 7), /* Command Completion Coalescing */
	100	HOST_CAP_PART = (1 << 13), /* Partial state capable */
	101	HOST_CAP_SSC = (1 << 14), /* Slumber state capable */
	102	HOST_CAP_PIO_MULTI = (1 << 15), /* PIO multiple DRQ support */
	103	HOST_CAP_FBS = (1 << 16), /* FIS-based switching support */
	104	HOST_CAP_PMP = (1 << 17), /* Port Multiplier support */
	105	HOST_CAP_ONLY = (1 << 18), /* Supports AHCI mode only */
	106	HOST_CAP_CLO = (1 << 24), /* Command List Override support */
	107	HOST_CAP_LED = (1 << 25), /* Supports activity LED */
	108	HOST_CAP_ALPM = (1 << 26), /* Aggressive Link PM support */
	109	HOST_CAP_SSS = (1 << 27), /* Staggered Spin-up */
	110	HOST_CAP_MPS = (1 << 28), /* Mechanical presence switch */
	111	HOST_CAP_SNTF = (1 << 29), /* SNotification register */
	112	HOST_CAP_NCQ = (1 << 30), /* Native Command Queueing */
	113	HOST_CAP_64 = (1 << 31), /* PCI DAC (64-bit DMA) support */
	114
	115	/* HOST_CAP2 bits */
	116	HOST_CAP2_BOH = (1 << 0), /* BIOS/OS handoff supported */
	117	HOST_CAP2_NVMHCI = (1 << 1), /* NVMHCI supported */
	118	HOST_CAP2_APST = (1 << 2), /* Automatic partial to slumber */
65fe1f0f SH	119	HOST_CAP2_SDS = (1 << 3), /* Support device sleep */
	120	HOST_CAP2_SADM = (1 << 4), /* Support aggressive DevSlp */
	121	HOST_CAP2_DESO = (1 << 5), /* DevSlp from slumber only */
365cfa1e AV	122
	123	/* registers for each SATA port */
	124	PORT_LST_ADDR = 0x00, /* command list DMA addr */
	125	PORT_LST_ADDR_HI = 0x04, /* command list DMA addr hi */
	126	PORT_FIS_ADDR = 0x08, /* FIS rx buf addr */
	127	PORT_FIS_ADDR_HI = 0x0c, /* FIS rx buf addr hi */
	128	PORT_IRQ_STAT = 0x10, /* interrupt status */
	129	PORT_IRQ_MASK = 0x14, /* interrupt enable/disable mask */
	130	PORT_CMD = 0x18, /* port command */
	131	PORT_TFDATA = 0x20, /* taskfile data */
	132	PORT_SIG = 0x24, /* device TF signature */
	133	PORT_CMD_ISSUE = 0x38, /* command issue */
	134	PORT_SCR_STAT = 0x28, /* SATA phy register: SStatus */
	135	PORT_SCR_CTL = 0x2c, /* SATA phy register: SControl */
	136	PORT_SCR_ERR = 0x30, /* SATA phy register: SError */
	137	PORT_SCR_ACT = 0x34, /* SATA phy register: SActive */
	138	PORT_SCR_NTF = 0x3c, /* SATA phy register: SNotification */
	139	PORT_FBS = 0x40, /* FIS-based Switching */
65fe1f0f	140	PORT_DEVSLP = 0x44, /* device sleep */
365cfa1e AV	141
	142	/* PORT_IRQ_{STAT,MASK} bits */
	143	PORT_IRQ_COLD_PRES = (1 << 31), /* cold presence detect */
	144	PORT_IRQ_TF_ERR = (1 << 30), /* task file error */
	145	PORT_IRQ_HBUS_ERR = (1 << 29), /* host bus fatal error */
	146	PORT_IRQ_HBUS_DATA_ERR = (1 << 28), /* host bus data error */
	147	PORT_IRQ_IF_ERR = (1 << 27), /* interface fatal error */
	148	PORT_IRQ_IF_NONFATAL = (1 << 26), /* interface non-fatal error */
	149	PORT_IRQ_OVERFLOW = (1 << 24), /* xfer exhausted available S/G */
	150	PORT_IRQ_BAD_PMP = (1 << 23), /* incorrect port multiplier */
	151
	152	PORT_IRQ_PHYRDY = (1 << 22), /* PhyRdy changed */
	153	PORT_IRQ_DEV_ILCK = (1 << 7), /* device interlock */
	154	PORT_IRQ_CONNECT = (1 << 6), /* port connect change status */
	155	PORT_IRQ_SG_DONE = (1 << 5), /* descriptor processed */
	156	PORT_IRQ_UNK_FIS = (1 << 4), /* unknown FIS rx'd */
	157	PORT_IRQ_SDB_FIS = (1 << 3), /* Set Device Bits FIS rx'd */
	158	PORT_IRQ_DMAS_FIS = (1 << 2), /* DMA Setup FIS rx'd */
	159	PORT_IRQ_PIOS_FIS = (1 << 1), /* PIO Setup FIS rx'd */
	160	PORT_IRQ_D2H_REG_FIS = (1 << 0), /* D2H Register FIS rx'd */
	161
	162	PORT_IRQ_FREEZE = PORT_IRQ_HBUS_ERR \|
	163	PORT_IRQ_IF_ERR \|
	164	PORT_IRQ_CONNECT \|
	165	PORT_IRQ_PHYRDY \|
	166	PORT_IRQ_UNK_FIS \|
	167	PORT_IRQ_BAD_PMP,
	168	PORT_IRQ_ERROR = PORT_IRQ_FREEZE \|
	169	PORT_IRQ_TF_ERR \|
	170	PORT_IRQ_HBUS_DATA_ERR,
	171	DEF_PORT_IRQ = PORT_IRQ_ERROR \| PORT_IRQ_SG_DONE \|
	172	PORT_IRQ_SDB_FIS \| PORT_IRQ_DMAS_FIS \|
	173	PORT_IRQ_PIOS_FIS \| PORT_IRQ_D2H_REG_FIS,
	174
	175	/* PORT_CMD bits */
	176	PORT_CMD_ASP = (1 << 27), /* Aggressive Slumber/Partial */
	177	PORT_CMD_ALPE = (1 << 26), /* Aggressive Link PM enable */
	178	PORT_CMD_ATAPI = (1 << 24), /* Device is ATAPI */
	179	PORT_CMD_FBSCP = (1 << 22), /* FBS Capable Port */
	180	PORT_CMD_PMP = (1 << 17), /* PMP attached */
	181	PORT_CMD_LIST_ON = (1 << 15), /* cmd list DMA engine running */
	182	PORT_CMD_FIS_ON = (1 << 14), /* FIS DMA engine running */
	183	PORT_CMD_FIS_RX = (1 << 4), /* Enable FIS receive DMA engine */
	184	PORT_CMD_CLO = (1 << 3), /* Command list override */
	185	PORT_CMD_POWER_ON = (1 << 2), /* Power up device */
	186	PORT_CMD_SPIN_UP = (1 << 1), /* Spin up device */
	187	PORT_CMD_START = (1 << 0), /* Enable port DMA engine */
	188
	189	PORT_CMD_ICC_MASK = (0xf << 28), /* i/f ICC state mask */
	190	PORT_CMD_ICC_ACTIVE = (0x1 << 28), /* Put i/f in active state */
	191	PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */
	192	PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */
	193
65fe1f0f	194	/* PORT_FBS bits */
365cfa1e AV	195	PORT_FBS_DWE_OFFSET = 16, /* FBS device with error offset */
	196	PORT_FBS_ADO_OFFSET = 12, /* FBS active dev optimization offset */
	197	PORT_FBS_DEV_OFFSET = 8, /* FBS device to issue offset */
	198	PORT_FBS_DEV_MASK = (0xf << PORT_FBS_DEV_OFFSET), /* FBS.DEV */
	199	PORT_FBS_SDE = (1 << 2), /* FBS single device error */
	200	PORT_FBS_DEC = (1 << 1), /* FBS device error clear */
	201	PORT_FBS_EN = (1 << 0), /* Enable FBS */
	202
65fe1f0f SH	203	/* PORT_DEVSLP bits */
	204	PORT_DEVSLP_DM_OFFSET = 25, /* DITO multiplier offset */
	205	PORT_DEVSLP_DM_MASK = (0xf << 25), /* DITO multiplier mask */
	206	PORT_DEVSLP_DITO_OFFSET = 15, /* DITO offset */
	207	PORT_DEVSLP_MDAT_OFFSET = 10, /* Minimum assertion time */
	208	PORT_DEVSLP_DETO_OFFSET = 2, /* DevSlp exit timeout */
	209	PORT_DEVSLP_DSP = (1 << 1), /* DevSlp present */
	210	PORT_DEVSLP_ADSE = (1 << 0), /* Aggressive DevSlp enable */
	211
365cfa1e	212	/* hpriv->flags bits */
55d5ec31 BN	213
	214	#define AHCI_HFLAGS(flags) .private_data = (void *)(flags)
	215
365cfa1e AV	216	AHCI_HFLAG_NO_NCQ = (1 << 0),
	217	AHCI_HFLAG_IGN_IRQ_IF_ERR = (1 << 1), /* ignore IRQ_IF_ERR */
	218	AHCI_HFLAG_IGN_SERR_INTERNAL = (1 << 2), /* ignore SERR_INTERNAL */
	219	AHCI_HFLAG_32BIT_ONLY = (1 << 3), /* force 32bit */
	220	AHCI_HFLAG_MV_PATA = (1 << 4), /* PATA port */
	221	AHCI_HFLAG_NO_MSI = (1 << 5), /* no PCI MSI */
	222	AHCI_HFLAG_NO_PMP = (1 << 6), /* no PMP */
365cfa1e AV	223	AHCI_HFLAG_SECT255 = (1 << 8), /* max 255 sectors */
	224	AHCI_HFLAG_YES_NCQ = (1 << 9), /* force NCQ cap on */
	225	AHCI_HFLAG_NO_SUSPEND = (1 << 10), /* don't suspend */
	226	AHCI_HFLAG_SRST_TOUT_IS_OFFLINE = (1 << 11), /* treat SRST timeout as
	227	link offline */
	228	AHCI_HFLAG_NO_SNTF = (1 << 12), /* no sntf */
83f2b963	229	AHCI_HFLAG_NO_FPDMA_AA = (1 << 13), /* no FPDMA AA */
5f173107	230	AHCI_HFLAG_YES_FBS = (1 << 14), /* force FBS cap on */
66583c9f BN	231	AHCI_HFLAG_DELAY_ENGINE = (1 << 15), /* do not start engine on
	232	port start (wait until
	233	error-handling stage) */
5ca72c4f	234	AHCI_HFLAG_MULTI_MSI = (1 << 16), /* multiple PCI MSIs */
365cfa1e AV	235
	236	/* ap->flags bits */
	237
9cbe056f	238	AHCI_FLAG_COMMON = ATA_FLAG_SATA \| ATA_FLAG_PIO_DMA \|
1a0f6b7e	239	ATA_FLAG_ACPI_SATA \| ATA_FLAG_AN,
365cfa1e AV	240
	241	ICH_MAP = 0x90, /* ICH MAP register */
	242
	243	/* em constants */
	244	EM_MAX_SLOTS = 8,
	245	EM_MAX_RETRY = 5,
	246
	247	/* em_ctl bits */
c0623166 HZ	248	EM_CTL_RST = (1 << 9), /* Reset */
c0623166 HZ	249	EM_CTL_TM = (1 << 8), /* Transmit Message */
25985edc	250	EM_CTL_MR = (1 << 0), /* Message Received */
c0623166 HZ	251	EM_CTL_ALHD = (1 << 26), /* Activity LED */
	252	EM_CTL_XMT = (1 << 25), /* Transmit Only */
	253	EM_CTL_SMB = (1 << 24), /* Single Message Buffer */
6e5fe5b1 HR	254	EM_CTL_SGPIO = (1 << 19), /* SGPIO messages supported */
	255	EM_CTL_SES = (1 << 18), /* SES-2 messages supported */
	256	EM_CTL_SAFTE = (1 << 17), /* SAF-TE messages supported */
	257	EM_CTL_LED = (1 << 16), /* LED messages supported */
008dbd61 HZ	258
	259	/* em message type */
	260	EM_MSG_TYPE_LED = (1 << 0), /* LED */
	261	EM_MSG_TYPE_SAFTE = (1 << 1), /* SAF-TE */
	262	EM_MSG_TYPE_SES2 = (1 << 2), /* SES-2 */
	263	EM_MSG_TYPE_SGPIO = (1 << 3), /* SGPIO */
365cfa1e AV	264	};
	265
	266	struct ahci_cmd_hdr {
	267	__le32 opts;
	268	__le32 status;
	269	__le32 tbl_addr;
	270	__le32 tbl_addr_hi;
	271	__le32 reserved[4];
	272	};
	273
	274	struct ahci_sg {
	275	__le32 addr;
	276	__le32 addr_hi;
	277	__le32 reserved;
	278	__le32 flags_size;
	279	};
	280
	281	struct ahci_em_priv {
	282	enum sw_activity blink_policy;
	283	struct timer_list timer;
	284	unsigned long saved_activity;
	285	unsigned long activity;
	286	unsigned long led_state;
	287	};
	288
	289	struct ahci_port_priv {
	290	struct ata_link *active_link;
	291	struct ahci_cmd_hdr *cmd_slot;
	292	dma_addr_t cmd_slot_dma;
	293	void *cmd_tbl;
	294	dma_addr_t cmd_tbl_dma;
	295	void *rx_fis;
	296	dma_addr_t rx_fis_dma;
	297	/* for NCQ spurious interrupt analysis */
	298	unsigned int ncq_saw_d2h:1;
	299	unsigned int ncq_saw_dmas:1;
	300	unsigned int ncq_saw_sdb:1;
5ca72c4f AG	301	u32 intr_status; /* interrupts to handle */
5ca72c4f AG	302	spinlock_t lock; /* protects parent ata_port */
365cfa1e AV	303	u32 intr_mask; /* interrupts to enable */
	304	bool fbs_supported; /* set iff FBS is supported */
	305	bool fbs_enabled; /* set iff FBS is enabled */
	306	int fbs_last_dev; /* save FBS.DEV of last FIS */
	307	/* enclosure management info per PM slot */
	308	struct ahci_em_priv em_priv[EM_MAX_SLOTS];
	309	};
	310
	311	struct ahci_host_priv {
25985edc	312	void __iomem * mmio; /* bus-independent mem map */
365cfa1e AV	313	unsigned int flags; /* AHCI_HFLAG_* */
	314	u32 cap; /* cap to use */
	315	u32 cap2; /* cap2 to use */
	316	u32 port_map; /* port map to use */
	317	u32 saved_cap; /* saved initial cap */
	318	u32 saved_cap2; /* saved initial cap2 */
	319	u32 saved_port_map; /* saved initial port_map */
	320	u32 em_loc; /* enclosure management location */
c0623166	321	u32 em_buf_sz; /* EM buffer size in byte */
008dbd61	322	u32 em_msg_type; /* EM message type */
f1e70c2c	323	struct clk clk; / Only for platforms supporting clk */
365cfa1e AV	324	};
365cfa1e AV	325
365cfa1e AV	326	extern int ahci_ignore_sss;
365cfa1e AV	327
fad16e7a TH	328	extern struct device_attribute *ahci_shost_attrs[];
	329	extern struct device_attribute *ahci_sdev_attrs[];
	330
	331	#define AHCI_SHT(drv_name) \
	332	ATA_NCQ_SHT(drv_name), \
	333	.can_queue = AHCI_MAX_CMDS - 1, \
	334	.sg_tablesize = AHCI_MAX_SG, \
	335	.dma_boundary = AHCI_DMA_BOUNDARY, \
	336	.shost_attrs = ahci_shost_attrs, \
	337	.sdev_attrs = ahci_sdev_attrs
	338
365cfa1e	339	extern struct ata_port_operations ahci_ops;
345347c5	340	extern struct ata_port_operations ahci_pmp_retry_srst_ops;
365cfa1e	341
bbb4ab43	342	unsigned int ahci_dev_classify(struct ata_port *ap);
02cdfcf0 DM	343	void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
02cdfcf0 DM	344	u32 opts);
365cfa1e AV	345	void ahci_save_initial_config(struct device *dev,
	346	struct ahci_host_priv *hpriv,
	347	unsigned int force_port_map,
	348	unsigned int mask_port_map);
	349	void ahci_init_controller(struct ata_host *host);
	350	int ahci_reset_controller(struct ata_host *host);
	351
	352	int ahci_do_softreset(struct ata_link link, unsigned int class,
	353	int pmp, unsigned long deadline,
	354	int (check_ready)(struct ata_link link));
	355
	356	int ahci_stop_engine(struct ata_port *ap);
	357	void ahci_start_engine(struct ata_port *ap);
	358	int ahci_check_ready(struct ata_link *link);
	359	int ahci_kick_engine(struct ata_port *ap);
02cdfcf0	360	int ahci_port_resume(struct ata_port *ap);
365cfa1e AV	361	void ahci_set_em_messages(struct ahci_host_priv *hpriv,
	362	struct ata_port_info *pi);
	363	int ahci_reset_em(struct ata_host *host);
	364	irqreturn_t ahci_interrupt(int irq, void *dev_instance);
5ca72c4f AG	365	irqreturn_t ahci_hw_interrupt(int irq, void *dev_instance);
5ca72c4f AG	366	irqreturn_t ahci_thread_fn(int irq, void *dev_instance);
365cfa1e	367	void ahci_print_info(struct ata_host host, const char scc_s);
5ca72c4f	368	int ahci_host_activate(struct ata_host *host, int irq, unsigned int n_msis);
365cfa1e AV	369
	370	static inline void __iomem __ahci_port_base(struct ata_host host,
	371	unsigned int port_no)
	372	{
	373	struct ahci_host_priv *hpriv = host->private_data;
	374	void __iomem *mmio = hpriv->mmio;
	375
	376	return mmio + 0x100 + (port_no * 0x80);
	377	}
	378
	379	static inline void __iomem ahci_port_base(struct ata_port ap)
	380	{
	381	return __ahci_port_base(ap->host, ap->port_no);
	382	}
	383
	384	static inline int ahci_nr_ports(u32 cap)
	385	{
	386	return (cap & 0x1f) + 1;
	387	}
	388
	389	#endif /* _AHCI_H */