/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* 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 .
*
* libata documentation is available via ' make { ps | pdf } docs ' ,
* as Documentation / driver - api / libata . rst
*
* 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/pci.h>
#include <linux/clk.h>
#include <linux/libata.h>
#include <linux/phy/phy.h>
#include <linux/regulator/consumer.h>
#include <linux/bits.h>
/* Enclosure Management Control */
#define EM_CTRL_MSG_TYPE 0 x000f0000
/* Enclosure Management LED Message Type */
#define EM_MSG_LED_HBA_PORT 0 x0000000f
#define EM_MSG_LED_PMP_SLOT 0 x0000ff00
#define EM_MSG_LED_VALUE 0 xffff0000
#define EM_MSG_LED_VALUE_ACTIVITY 0 x00070000
#define EM_MSG_LED_VALUE_OFF 0 xfff80000
#define EM_MSG_LED_VALUE_ON 0 x00010000
enum {
AHCI_MAX_PORTS = 32 ,
AHCI_MAX_SG = 168 , /* hardware max is 64K */
AHCI_DMA_BOUNDARY = 0 xffffffff,
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 = 0 x40,
AHCI_CMD_TBL_HDR_SZ = 0 x80,
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 = BIT(31 ),
AHCI_CMD_ATAPI = BIT(5 ),
AHCI_CMD_WRITE = BIT(6 ),
AHCI_CMD_PREFETCH = BIT(7 ),
AHCI_CMD_RESET = BIT(8 ),
AHCI_CMD_CLR_BUSY = BIT(10 ),
RX_FIS_PIO_SETUP = 0 x20, /* offset of PIO Setup FIS data */
RX_FIS_D2H_REG = 0 x40, /* offset of D2H Register FIS data */
RX_FIS_SDB = 0 x58, /* offset of SDB FIS data */
RX_FIS_UNK = 0 x60, /* offset of Unknown FIS data */
/* global controller registers */
HOST_CAP = 0 x00, /* host capabilities */
HOST_CTL = 0 x04, /* global host control */
HOST_IRQ_STAT = 0 x08, /* interrupt status */
HOST_PORTS_IMPL = 0 x0c, /* bitmap of implemented ports */
HOST_VERSION = 0 x10, /* AHCI spec. version compliancy */
HOST_EM_LOC = 0 x1c, /* Enclosure Management location */
HOST_EM_CTL = 0 x20, /* Enclosure Management Control */
HOST_CAP2 = 0 x24, /* host capabilities, extended */
/* HOST_CTL bits */
HOST_RESET = BIT(0 ), /* reset controller; self-clear */
HOST_IRQ_EN = BIT(1 ), /* global IRQ enable */
HOST_MRSM = BIT(2 ), /* MSI Revert to Single Message */
HOST_AHCI_EN = BIT(31 ), /* AHCI enabled */
/* HOST_CAP bits */
HOST_CAP_SXS = BIT(5 ), /* Supports External SATA */
HOST_CAP_EMS = BIT(6 ), /* Enclosure Management support */
HOST_CAP_CCC = BIT(7 ), /* Command Completion Coalescing */
HOST_CAP_PART = BIT(13 ), /* Partial state capable */
HOST_CAP_SSC = BIT(14 ), /* Slumber state capable */
HOST_CAP_PIO_MULTI = BIT(15 ), /* PIO multiple DRQ support */
HOST_CAP_FBS = BIT(16 ), /* FIS-based switching support */
HOST_CAP_PMP = BIT(17 ), /* Port Multiplier support */
HOST_CAP_ONLY = BIT(18 ), /* Supports AHCI mode only */
HOST_CAP_CLO = BIT(24 ), /* Command List Override support */
HOST_CAP_LED = BIT(25 ), /* Supports activity LED */
HOST_CAP_ALPM = BIT(26 ), /* Aggressive Link PM support */
HOST_CAP_SSS = BIT(27 ), /* Staggered Spin-up */
HOST_CAP_MPS = BIT(28 ), /* Mechanical presence switch */
HOST_CAP_SNTF = BIT(29 ), /* SNotification register */
HOST_CAP_NCQ = BIT(30 ), /* Native Command Queueing */
HOST_CAP_64 = BIT(31 ), /* PCI DAC (64-bit DMA) support */
/* HOST_CAP2 bits */
HOST_CAP2_BOH = BIT(0 ), /* BIOS/OS handoff supported */
HOST_CAP2_NVMHCI = BIT(1 ), /* NVMHCI supported */
HOST_CAP2_APST = BIT(2 ), /* Automatic partial to slumber */
HOST_CAP2_SDS = BIT(3 ), /* Support device sleep */
HOST_CAP2_SADM = BIT(4 ), /* Support aggressive DevSlp */
HOST_CAP2_DESO = BIT(5 ), /* DevSlp from slumber only */
/* registers for each SATA port */
PORT_LST_ADDR = 0 x00, /* command list DMA addr */
PORT_LST_ADDR_HI = 0 x04, /* command list DMA addr hi */
PORT_FIS_ADDR = 0 x08, /* FIS rx buf addr */
PORT_FIS_ADDR_HI = 0 x0c, /* FIS rx buf addr hi */
PORT_IRQ_STAT = 0 x10, /* interrupt status */
PORT_IRQ_MASK = 0 x14, /* interrupt enable/disable mask */
PORT_CMD = 0 x18, /* port command */
PORT_TFDATA = 0 x20, /* taskfile data */
PORT_SIG = 0 x24, /* device TF signature */
PORT_CMD_ISSUE = 0 x38, /* command issue */
PORT_SCR_STAT = 0 x28, /* SATA phy register: SStatus */
PORT_SCR_CTL = 0 x2c, /* SATA phy register: SControl */
PORT_SCR_ERR = 0 x30, /* SATA phy register: SError */
PORT_SCR_ACT = 0 x34, /* SATA phy register: SActive */
PORT_SCR_NTF = 0 x3c, /* SATA phy register: SNotification */
PORT_FBS = 0 x40, /* FIS-based Switching */
PORT_DEVSLP = 0 x44, /* device sleep */
/* PORT_IRQ_{STAT,MASK} bits */
PORT_IRQ_COLD_PRES = BIT(31 ), /* cold presence detect */
PORT_IRQ_TF_ERR = BIT(30 ), /* task file error */
PORT_IRQ_HBUS_ERR = BIT(29 ), /* host bus fatal error */
PORT_IRQ_HBUS_DATA_ERR = BIT(28 ), /* host bus data error */
PORT_IRQ_IF_ERR = BIT(27 ), /* interface fatal error */
PORT_IRQ_IF_NONFATAL = BIT(26 ), /* interface non-fatal error */
PORT_IRQ_OVERFLOW = BIT(24 ), /* xfer exhausted available S/G */
PORT_IRQ_BAD_PMP = BIT(23 ), /* incorrect port multiplier */
PORT_IRQ_PHYRDY = BIT(22 ), /* PhyRdy changed */
PORT_IRQ_DMPS = BIT(7 ), /* mechanical presence status */
PORT_IRQ_CONNECT = BIT(6 ), /* port connect change status */
PORT_IRQ_SG_DONE = BIT(5 ), /* descriptor processed */
PORT_IRQ_UNK_FIS = BIT(4 ), /* unknown FIS rx'd */
PORT_IRQ_SDB_FIS = BIT(3 ), /* Set Device Bits FIS rx'd */
PORT_IRQ_DMAS_FIS = BIT(2 ), /* DMA Setup FIS rx'd */
PORT_IRQ_PIOS_FIS = BIT(1 ), /* PIO Setup FIS rx'd */
PORT_IRQ_D2H_REG_FIS = BIT(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 = BIT(27 ), /* Aggressive Slumber/Partial */
PORT_CMD_ALPE = BIT(26 ), /* Aggressive Link PM enable */
PORT_CMD_ATAPI = BIT(24 ), /* Device is ATAPI */
PORT_CMD_FBSCP = BIT(22 ), /* FBS Capable Port */
PORT_CMD_ESP = BIT(21 ), /* External Sata Port */
PORT_CMD_CPD = BIT(20 ), /* Cold Presence Detection */
PORT_CMD_MPSP = BIT(19 ), /* Mechanical Presence Switch */
PORT_CMD_HPCP = BIT(18 ), /* HotPlug Capable Port */
PORT_CMD_PMP = BIT(17 ), /* PMP attached */
PORT_CMD_LIST_ON = BIT(15 ), /* cmd list DMA engine running */
PORT_CMD_FIS_ON = BIT(14 ), /* FIS DMA engine running */
PORT_CMD_FIS_RX = BIT(4 ), /* Enable FIS receive DMA engine */
PORT_CMD_CLO = BIT(3 ), /* Command list override */
PORT_CMD_POWER_ON = BIT(2 ), /* Power up device */
PORT_CMD_SPIN_UP = BIT(1 ), /* Spin up device */
PORT_CMD_START = BIT(0 ), /* Enable port DMA engine */
PORT_CMD_ICC_MASK = (0 xfu << 28 ), /* i/f ICC state mask */
PORT_CMD_ICC_ACTIVE = (0 x1u << 28 ), /* Put i/f in active state */
PORT_CMD_ICC_PARTIAL = (0 x2u << 28 ), /* Put i/f in partial state */
PORT_CMD_ICC_SLUMBER = (0 x6u << 28 ), /* Put i/f in slumber state */
/* PORT_CMD capabilities mask */
PORT_CMD_CAP = PORT_CMD_HPCP | PORT_CMD_MPSP |
PORT_CMD_CPD | PORT_CMD_ESP | PORT_CMD_FBSCP,
/* 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 = (0 xf << PORT_FBS_DEV_OFFSET), /* FBS.DEV */
PORT_FBS_SDE = BIT(2 ), /* FBS single device error */
PORT_FBS_DEC = BIT(1 ), /* FBS device error clear */
PORT_FBS_EN = BIT(0 ), /* Enable FBS */
/* PORT_DEVSLP bits */
PORT_DEVSLP_DM_OFFSET = 25 , /* DITO multiplier offset */
PORT_DEVSLP_DM_MASK = (0 xf << 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 = BIT(1 ), /* DevSlp present */
PORT_DEVSLP_ADSE = BIT(0 ), /* Aggressive DevSlp enable */
/* hpriv->flags bits */
#define AHCI_HFLAGS(flags) .private_data = (void *)(flags)
AHCI_HFLAG_NO_NCQ = BIT(0 ),
AHCI_HFLAG_IGN_IRQ_IF_ERR = BIT(1 ), /* ignore IRQ_IF_ERR */
AHCI_HFLAG_IGN_SERR_INTERNAL = BIT(2 ), /* ignore SERR_INTERNAL */
AHCI_HFLAG_32BIT_ONLY = BIT(3 ), /* force 32bit */
AHCI_HFLAG_MV_PATA = BIT(4 ), /* PATA port */
AHCI_HFLAG_NO_MSI = BIT(5 ), /* no PCI MSI */
AHCI_HFLAG_NO_PMP = BIT(6 ), /* no PMP */
AHCI_HFLAG_SECT255 = BIT(8 ), /* max 255 sectors */
AHCI_HFLAG_YES_NCQ = BIT(9 ), /* force NCQ cap on */
AHCI_HFLAG_NO_SUSPEND = BIT(10 ), /* don't suspend */
AHCI_HFLAG_SRST_TOUT_IS_OFFLINE = BIT(11 ), /* treat SRST timeout as
link offline */
AHCI_HFLAG_NO_SNTF = BIT(12 ), /* no sntf */
AHCI_HFLAG_NO_FPDMA_AA = BIT(13 ), /* no FPDMA AA */
AHCI_HFLAG_YES_FBS = BIT(14 ), /* force FBS cap on */
AHCI_HFLAG_DELAY_ENGINE = BIT(15 ), /* do not start engine on
port start ( wait until
error-handling stage) */
AHCI_HFLAG_NO_DEVSLP = BIT(17 ), /* no device sleep */
AHCI_HFLAG_NO_FBS = BIT(18 ), /* no FBS */
#ifdef CONFIG_PCI_MSI
AHCI_HFLAG_MULTI_MSI = BIT(20 ), /* per-port MSI(-X) */
#else
/* compile out MSI infrastructure */
AHCI_HFLAG_MULTI_MSI = 0 ,
#endif
AHCI_HFLAG_WAKE_BEFORE_STOP = BIT(22 ), /* wake before DMA stop */
AHCI_HFLAG_YES_ALPM = BIT(23 ), /* force ALPM cap on */
AHCI_HFLAG_NO_WRITE_TO_RO = BIT(24 ), /* don't write to read
only registers */
AHCI_HFLAG_SUSPEND_PHYS = BIT(25 ), /* handle PHYs during
suspend/resume */
AHCI_HFLAG_NO_SXS = BIT(26 ), /* SXS not supported */
AHCI_HFLAG_43BIT_ONLY = BIT(27 ), /* 43bit DMA addr limit */
AHCI_HFLAG_INTEL_PCS_QUIRK = BIT(28 ), /* apply Intel PCS quirk */
AHCI_HFLAG_ATAPI_DMA_QUIRK = BIT(29 ), /* force ATAPI to use DMA */
/* ap->flags bits */
AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
ATA_FLAG_ACPI_SATA | ATA_FLAG_AN,
ICH_MAP = 0 x90, /* ICH MAP register */
PCS_6 = 0 x92, /* 6 port PCS */
PCS_7 = 0 x94, /* 7+ port PCS (Denverton) */
/* em constants */
EM_MAX_SLOTS = SATA_PMP_MAX_PORTS,
EM_MAX_RETRY = 5 ,
/* em_ctl bits */
EM_CTL_RST = BIT(9 ), /* Reset */
EM_CTL_TM = BIT(8 ), /* Transmit Message */
EM_CTL_MR = BIT(0 ), /* Message Received */
EM_CTL_ALHD = BIT(26 ), /* Activity LED */
EM_CTL_XMT = BIT(25 ), /* Transmit Only */
EM_CTL_SMB = BIT(24 ), /* Single Message Buffer */
EM_CTL_SGPIO = BIT(19 ), /* SGPIO messages supported */
EM_CTL_SES = BIT(18 ), /* SES-2 messages supported */
EM_CTL_SAFTE = BIT(17 ), /* SAF-TE messages supported */
EM_CTL_LED = BIT(16 ), /* LED messages supported */
/* em message type */
EM_MSG_TYPE_LED = BIT(0 ), /* LED */
EM_MSG_TYPE_SAFTE = BIT(1 ), /* SAF-TE */
EM_MSG_TYPE_SES2 = BIT(2 ), /* SES-2 */
EM_MSG_TYPE_SGPIO = BIT(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 ata_link *link;
};
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 ;
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];
char *irq_desc; /* desc in /proc/interrupts */
};
struct ahci_host_priv {
/* Input fields */
unsigned int flags; /* AHCI_HFLAG_* */
u32 mask_port_map; /* Mask of valid ports */
u32 mask_port_ext; /* Mask of ports ext capability */
void __iomem * mmio; /* bus-independent mem map */
u32 cap; /* cap to use */
u32 cap2; /* cap2 to use */
u32 version; /* cached version */
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 saved_port_cap[AHCI_MAX_PORTS]; /* saved port_cap */
u32 em_loc; /* enclosure management location */
u32 em_buf_sz; /* EM buffer size in byte */
u32 em_msg_type; /* EM message type */
u32 remapped_nvme; /* NVMe remapped device count */
bool got_runtime_pm; /* Did we do pm_runtime_get? */
unsigned int n_clks;
struct clk_bulk_data *clks; /* Optional */
unsigned int f_rsts;
struct reset_control *rsts; /* Optional */
struct regulator **target_pwrs; /* Optional */
struct regulator *ahci_regulator;/* Optional */
struct regulator *phy_regulator;/* Optional */
/*
* If platform uses PHYs . There is a 1 : 1 relation between the port number and
* the PHY position in this array .
*/
struct phy **phys;
unsigned nports; /* Number of ports */
void *plat_data; /* Other platform data */
unsigned int irq; /* interrupt line */
/*
* Optional ahci_start_engine override , if not set this gets set to the
* default ahci_start_engine during ahci_save_initial_config , this can
* be overridden anytime before the host is activated .
*/
void (*start_engine)(struct ata_port *ap);
/*
* Optional ahci_stop_engine override , if not set this gets set to the
* default ahci_stop_engine during ahci_save_initial_config , this can
* be overridden anytime before the host is activated .
*/
int (*stop_engine)(struct ata_port *ap);
irqreturn_t (*irq_handler)(int irq, void *dev_instance);
/* only required for per-port MSI(-X) support */
int (*get_irq_vector)(struct ata_host *host,
int port);
};
/*
* Return true if a port should be ignored because it is excluded from
* the host port map .
*/
static inline bool ahci_ignore_port(struct ahci_host_priv *hpriv,
unsigned int portid)
{
if (portid >= hpriv->nports)
return true ;
/* mask_port_map not set means that all ports are available */
if (!hpriv->mask_port_map)
return false ;
return !(hpriv->mask_port_map & (1 << portid));
}
extern int ahci_ignore_sss;
extern const struct attribute_group *ahci_shost_groups[];
extern const struct attribute_group *ahci_sdev_groups[];
/*
* This must be instantiated by the edge drivers . Read the comments
* for ATA_BASE_SHT
*/
#define AHCI_SHT(drv_name) \
__ATA_BASE_SHT(drv_name), \
.can_queue = AHCI_MAX_CMDS, \
.sg_tablesize = AHCI_MAX_SG, \
.dma_boundary = AHCI_DMA_BOUNDARY, \
.shost_groups = ahci_shost_groups, \
.sdev_groups = ahci_sdev_groups, \
.change_queue_depth = ata_scsi_change_queue_depth, \
.tag_alloc_policy_rr = true , \
.sdev_configure = ata_scsi_sdev_configure
extern struct ata_port_operations ahci_ops;
extern struct ata_port_operations ahci_platform_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);
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_do_hardreset(struct ata_link *link, unsigned int *class ,
unsigned long deadline, bool *online);
unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);
int ahci_stop_engine(struct ata_port *ap);
void ahci_start_fis_rx(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);
void ahci_print_info(struct ata_host *host, const char *scc_s);
int ahci_host_activate(struct ata_host *host, const struct scsi_host_template *sht);
void ahci_error_handler(struct ata_port *ap);
u32 ahci_handle_port_intr(struct ata_host *host, u32 irq_masked);
static inline void __iomem *__ahci_port_base(struct ahci_host_priv *hpriv,
unsigned int port_no)
{
void __iomem *mmio = hpriv->mmio;
return mmio + 0 x100 + (port_no * 0 x80);
}
static inline void __iomem *ahci_port_base(struct ata_port *ap)
{
struct ahci_host_priv *hpriv = ap->host->private_data;
return __ahci_port_base(hpriv, ap->port_no);
}
static inline int ahci_nr_ports(u32 cap)
{
return (cap & 0 x1f) + 1 ;
}
#endif /* _AHCI_H */
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