| /* 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 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_CLKS = 5, |
| 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 = 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 = 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 = 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 = 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 = 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_DEV_ILCK = BIT(7), /* device interlock */ |
| 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_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 = (0xfu << 28), /* i/f ICC state mask */ |
| PORT_CMD_ICC_ACTIVE = (0x1u << 28), /* Put i/f in active state */ |
| PORT_CMD_ICC_PARTIAL = (0x2u << 28), /* Put i/f in partial state */ |
| PORT_CMD_ICC_SLUMBER = (0x6u << 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 = 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 = (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 = 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_IS_MOBILE = BIT(25), /* mobile chipset, use |
| SATA_MOBILE_LPM_POLICY |
| as default lpm_policy */ |
| AHCI_HFLAG_SUSPEND_PHYS = BIT(26), /* handle PHYs during |
| suspend/resume */ |
| AHCI_HFLAG_IGN_NOTSUPP_POWER_ON = BIT(27), /* ignore -EOPNOTSUPP |
| from phy_power_on() */ |
| AHCI_HFLAG_NO_SXS = BIT(28), /* SXS not supported */ |
| |
| /* 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 */ |
| PCS_6 = 0x92, /* 6 port PCS */ |
| PCS_7 = 0x94, /* 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 force_port_map; /* force port map */ |
| u32 mask_port_map; /* mask out particular bits */ |
| |
| 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 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? */ |
| struct clk *clks[AHCI_MAX_CLKS]; /* Optional */ |
| 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); |
| }; |
| |
| extern int ahci_ignore_sss; |
| |
| extern struct device_attribute *ahci_shost_attrs[]; |
| extern struct device_attribute *ahci_sdev_attrs[]; |
| |
| /* |
| * 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_attrs = ahci_shost_attrs, \ |
| .sdev_attrs = ahci_sdev_attrs, \ |
| .change_queue_depth = ata_scsi_change_queue_depth, \ |
| .tag_alloc_policy = BLK_TAG_ALLOC_RR, \ |
| .slave_configure = ata_scsi_slave_config |
| |
| 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, 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 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 */ |
