458 lines
17 KiB
C
458 lines
17 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* ahci.h - Common AHCI SATA definitions and declarations
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*
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* Maintained by: Tejun Heo <tj@kernel.org>
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* Please ALWAYS copy linux-ide@vger.kernel.org
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* on emails.
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*
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* Copyright 2004-2005 Red Hat, Inc.
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*
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* libata documentation is available via 'make {ps|pdf}docs',
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* as Documentation/driver-api/libata.rst
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*
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* AHCI hardware documentation:
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* http://www.intel.com/technology/serialata/pdf/rev1_0.pdf
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* http://www.intel.com/technology/serialata/pdf/rev1_1.pdf
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*/
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#ifndef _AHCI_H
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#define _AHCI_H
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#include <linux/pci.h>
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#include <linux/clk.h>
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#include <linux/libata.h>
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#include <linux/phy/phy.h>
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#include <linux/regulator/consumer.h>
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#include <linux/bits.h>
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/* Enclosure Management Control */
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#define EM_CTRL_MSG_TYPE 0x000f0000
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/* Enclosure Management LED Message Type */
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#define EM_MSG_LED_HBA_PORT 0x0000000f
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#define EM_MSG_LED_PMP_SLOT 0x0000ff00
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#define EM_MSG_LED_VALUE 0xffff0000
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#define EM_MSG_LED_VALUE_ACTIVITY 0x00070000
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#define EM_MSG_LED_VALUE_OFF 0xfff80000
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#define EM_MSG_LED_VALUE_ON 0x00010000
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enum {
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AHCI_MAX_PORTS = 32,
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AHCI_MAX_SG = 168, /* hardware max is 64K */
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AHCI_DMA_BOUNDARY = 0xffffffff,
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AHCI_MAX_CMDS = 32,
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AHCI_CMD_SZ = 32,
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AHCI_CMD_SLOT_SZ = AHCI_MAX_CMDS * AHCI_CMD_SZ,
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AHCI_RX_FIS_SZ = 256,
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AHCI_CMD_TBL_CDB = 0x40,
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AHCI_CMD_TBL_HDR_SZ = 0x80,
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AHCI_CMD_TBL_SZ = AHCI_CMD_TBL_HDR_SZ + (AHCI_MAX_SG * 16),
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AHCI_CMD_TBL_AR_SZ = AHCI_CMD_TBL_SZ * AHCI_MAX_CMDS,
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AHCI_PORT_PRIV_DMA_SZ = AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_AR_SZ +
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AHCI_RX_FIS_SZ,
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AHCI_PORT_PRIV_FBS_DMA_SZ = AHCI_CMD_SLOT_SZ +
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AHCI_CMD_TBL_AR_SZ +
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(AHCI_RX_FIS_SZ * 16),
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AHCI_IRQ_ON_SG = BIT(31),
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AHCI_CMD_ATAPI = BIT(5),
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AHCI_CMD_WRITE = BIT(6),
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AHCI_CMD_PREFETCH = BIT(7),
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AHCI_CMD_RESET = BIT(8),
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AHCI_CMD_CLR_BUSY = BIT(10),
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RX_FIS_PIO_SETUP = 0x20, /* offset of PIO Setup FIS data */
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RX_FIS_D2H_REG = 0x40, /* offset of D2H Register FIS data */
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RX_FIS_SDB = 0x58, /* offset of SDB FIS data */
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RX_FIS_UNK = 0x60, /* offset of Unknown FIS data */
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/* global controller registers */
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HOST_CAP = 0x00, /* host capabilities */
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HOST_CTL = 0x04, /* global host control */
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HOST_IRQ_STAT = 0x08, /* interrupt status */
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HOST_PORTS_IMPL = 0x0c, /* bitmap of implemented ports */
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HOST_VERSION = 0x10, /* AHCI spec. version compliancy */
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HOST_EM_LOC = 0x1c, /* Enclosure Management location */
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HOST_EM_CTL = 0x20, /* Enclosure Management Control */
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HOST_CAP2 = 0x24, /* host capabilities, extended */
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/* HOST_CTL bits */
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HOST_RESET = BIT(0), /* reset controller; self-clear */
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HOST_IRQ_EN = BIT(1), /* global IRQ enable */
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HOST_MRSM = BIT(2), /* MSI Revert to Single Message */
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HOST_AHCI_EN = BIT(31), /* AHCI enabled */
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/* HOST_CAP bits */
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HOST_CAP_SXS = BIT(5), /* Supports External SATA */
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HOST_CAP_EMS = BIT(6), /* Enclosure Management support */
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HOST_CAP_CCC = BIT(7), /* Command Completion Coalescing */
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HOST_CAP_PART = BIT(13), /* Partial state capable */
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HOST_CAP_SSC = BIT(14), /* Slumber state capable */
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HOST_CAP_PIO_MULTI = BIT(15), /* PIO multiple DRQ support */
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HOST_CAP_FBS = BIT(16), /* FIS-based switching support */
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HOST_CAP_PMP = BIT(17), /* Port Multiplier support */
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HOST_CAP_ONLY = BIT(18), /* Supports AHCI mode only */
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HOST_CAP_CLO = BIT(24), /* Command List Override support */
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HOST_CAP_LED = BIT(25), /* Supports activity LED */
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HOST_CAP_ALPM = BIT(26), /* Aggressive Link PM support */
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HOST_CAP_SSS = BIT(27), /* Staggered Spin-up */
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HOST_CAP_MPS = BIT(28), /* Mechanical presence switch */
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HOST_CAP_SNTF = BIT(29), /* SNotification register */
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HOST_CAP_NCQ = BIT(30), /* Native Command Queueing */
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HOST_CAP_64 = BIT(31), /* PCI DAC (64-bit DMA) support */
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/* HOST_CAP2 bits */
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HOST_CAP2_BOH = BIT(0), /* BIOS/OS handoff supported */
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HOST_CAP2_NVMHCI = BIT(1), /* NVMHCI supported */
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HOST_CAP2_APST = BIT(2), /* Automatic partial to slumber */
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HOST_CAP2_SDS = BIT(3), /* Support device sleep */
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HOST_CAP2_SADM = BIT(4), /* Support aggressive DevSlp */
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HOST_CAP2_DESO = BIT(5), /* DevSlp from slumber only */
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/* registers for each SATA port */
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PORT_LST_ADDR = 0x00, /* command list DMA addr */
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PORT_LST_ADDR_HI = 0x04, /* command list DMA addr hi */
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PORT_FIS_ADDR = 0x08, /* FIS rx buf addr */
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PORT_FIS_ADDR_HI = 0x0c, /* FIS rx buf addr hi */
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PORT_IRQ_STAT = 0x10, /* interrupt status */
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PORT_IRQ_MASK = 0x14, /* interrupt enable/disable mask */
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PORT_CMD = 0x18, /* port command */
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PORT_TFDATA = 0x20, /* taskfile data */
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PORT_SIG = 0x24, /* device TF signature */
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PORT_CMD_ISSUE = 0x38, /* command issue */
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PORT_SCR_STAT = 0x28, /* SATA phy register: SStatus */
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PORT_SCR_CTL = 0x2c, /* SATA phy register: SControl */
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PORT_SCR_ERR = 0x30, /* SATA phy register: SError */
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PORT_SCR_ACT = 0x34, /* SATA phy register: SActive */
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PORT_SCR_NTF = 0x3c, /* SATA phy register: SNotification */
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PORT_FBS = 0x40, /* FIS-based Switching */
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PORT_DEVSLP = 0x44, /* device sleep */
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/* PORT_IRQ_{STAT,MASK} bits */
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PORT_IRQ_COLD_PRES = BIT(31), /* cold presence detect */
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PORT_IRQ_TF_ERR = BIT(30), /* task file error */
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PORT_IRQ_HBUS_ERR = BIT(29), /* host bus fatal error */
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PORT_IRQ_HBUS_DATA_ERR = BIT(28), /* host bus data error */
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PORT_IRQ_IF_ERR = BIT(27), /* interface fatal error */
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PORT_IRQ_IF_NONFATAL = BIT(26), /* interface non-fatal error */
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PORT_IRQ_OVERFLOW = BIT(24), /* xfer exhausted available S/G */
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PORT_IRQ_BAD_PMP = BIT(23), /* incorrect port multiplier */
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PORT_IRQ_PHYRDY = BIT(22), /* PhyRdy changed */
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PORT_IRQ_DMPS = BIT(7), /* mechanical presence status */
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PORT_IRQ_CONNECT = BIT(6), /* port connect change status */
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PORT_IRQ_SG_DONE = BIT(5), /* descriptor processed */
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PORT_IRQ_UNK_FIS = BIT(4), /* unknown FIS rx'd */
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PORT_IRQ_SDB_FIS = BIT(3), /* Set Device Bits FIS rx'd */
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PORT_IRQ_DMAS_FIS = BIT(2), /* DMA Setup FIS rx'd */
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PORT_IRQ_PIOS_FIS = BIT(1), /* PIO Setup FIS rx'd */
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PORT_IRQ_D2H_REG_FIS = BIT(0), /* D2H Register FIS rx'd */
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PORT_IRQ_FREEZE = PORT_IRQ_HBUS_ERR |
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PORT_IRQ_IF_ERR |
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PORT_IRQ_CONNECT |
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PORT_IRQ_PHYRDY |
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PORT_IRQ_UNK_FIS |
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PORT_IRQ_BAD_PMP,
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PORT_IRQ_ERROR = PORT_IRQ_FREEZE |
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PORT_IRQ_TF_ERR |
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PORT_IRQ_HBUS_DATA_ERR,
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DEF_PORT_IRQ = PORT_IRQ_ERROR | PORT_IRQ_SG_DONE |
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PORT_IRQ_SDB_FIS | PORT_IRQ_DMAS_FIS |
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PORT_IRQ_PIOS_FIS | PORT_IRQ_D2H_REG_FIS,
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/* PORT_CMD bits */
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PORT_CMD_ASP = BIT(27), /* Aggressive Slumber/Partial */
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PORT_CMD_ALPE = BIT(26), /* Aggressive Link PM enable */
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PORT_CMD_ATAPI = BIT(24), /* Device is ATAPI */
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PORT_CMD_FBSCP = BIT(22), /* FBS Capable Port */
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PORT_CMD_ESP = BIT(21), /* External Sata Port */
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PORT_CMD_CPD = BIT(20), /* Cold Presence Detection */
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PORT_CMD_MPSP = BIT(19), /* Mechanical Presence Switch */
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PORT_CMD_HPCP = BIT(18), /* HotPlug Capable Port */
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PORT_CMD_PMP = BIT(17), /* PMP attached */
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PORT_CMD_LIST_ON = BIT(15), /* cmd list DMA engine running */
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PORT_CMD_FIS_ON = BIT(14), /* FIS DMA engine running */
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PORT_CMD_FIS_RX = BIT(4), /* Enable FIS receive DMA engine */
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PORT_CMD_CLO = BIT(3), /* Command list override */
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PORT_CMD_POWER_ON = BIT(2), /* Power up device */
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PORT_CMD_SPIN_UP = BIT(1), /* Spin up device */
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PORT_CMD_START = BIT(0), /* Enable port DMA engine */
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PORT_CMD_ICC_MASK = (0xfu << 28), /* i/f ICC state mask */
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PORT_CMD_ICC_ACTIVE = (0x1u << 28), /* Put i/f in active state */
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PORT_CMD_ICC_PARTIAL = (0x2u << 28), /* Put i/f in partial state */
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PORT_CMD_ICC_SLUMBER = (0x6u << 28), /* Put i/f in slumber state */
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/* PORT_CMD capabilities mask */
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PORT_CMD_CAP = PORT_CMD_HPCP | PORT_CMD_MPSP |
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PORT_CMD_CPD | PORT_CMD_ESP | PORT_CMD_FBSCP,
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/* PORT_FBS bits */
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PORT_FBS_DWE_OFFSET = 16, /* FBS device with error offset */
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PORT_FBS_ADO_OFFSET = 12, /* FBS active dev optimization offset */
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PORT_FBS_DEV_OFFSET = 8, /* FBS device to issue offset */
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PORT_FBS_DEV_MASK = (0xf << PORT_FBS_DEV_OFFSET), /* FBS.DEV */
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PORT_FBS_SDE = BIT(2), /* FBS single device error */
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PORT_FBS_DEC = BIT(1), /* FBS device error clear */
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PORT_FBS_EN = BIT(0), /* Enable FBS */
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/* PORT_DEVSLP bits */
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PORT_DEVSLP_DM_OFFSET = 25, /* DITO multiplier offset */
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PORT_DEVSLP_DM_MASK = (0xf << 25), /* DITO multiplier mask */
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PORT_DEVSLP_DITO_OFFSET = 15, /* DITO offset */
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PORT_DEVSLP_MDAT_OFFSET = 10, /* Minimum assertion time */
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PORT_DEVSLP_DETO_OFFSET = 2, /* DevSlp exit timeout */
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PORT_DEVSLP_DSP = BIT(1), /* DevSlp present */
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PORT_DEVSLP_ADSE = BIT(0), /* Aggressive DevSlp enable */
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/* hpriv->flags bits */
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#define AHCI_HFLAGS(flags) .private_data = (void *)(flags)
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AHCI_HFLAG_NO_NCQ = BIT(0),
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AHCI_HFLAG_IGN_IRQ_IF_ERR = BIT(1), /* ignore IRQ_IF_ERR */
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AHCI_HFLAG_IGN_SERR_INTERNAL = BIT(2), /* ignore SERR_INTERNAL */
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AHCI_HFLAG_32BIT_ONLY = BIT(3), /* force 32bit */
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AHCI_HFLAG_MV_PATA = BIT(4), /* PATA port */
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AHCI_HFLAG_NO_MSI = BIT(5), /* no PCI MSI */
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AHCI_HFLAG_NO_PMP = BIT(6), /* no PMP */
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AHCI_HFLAG_SECT255 = BIT(8), /* max 255 sectors */
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AHCI_HFLAG_YES_NCQ = BIT(9), /* force NCQ cap on */
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AHCI_HFLAG_NO_SUSPEND = BIT(10), /* don't suspend */
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AHCI_HFLAG_SRST_TOUT_IS_OFFLINE = BIT(11), /* treat SRST timeout as
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link offline */
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AHCI_HFLAG_NO_SNTF = BIT(12), /* no sntf */
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AHCI_HFLAG_NO_FPDMA_AA = BIT(13), /* no FPDMA AA */
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AHCI_HFLAG_YES_FBS = BIT(14), /* force FBS cap on */
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AHCI_HFLAG_DELAY_ENGINE = BIT(15), /* do not start engine on
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port start (wait until
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error-handling stage) */
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AHCI_HFLAG_NO_DEVSLP = BIT(17), /* no device sleep */
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AHCI_HFLAG_NO_FBS = BIT(18), /* no FBS */
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#ifdef CONFIG_PCI_MSI
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AHCI_HFLAG_MULTI_MSI = BIT(20), /* per-port MSI(-X) */
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#else
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/* compile out MSI infrastructure */
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AHCI_HFLAG_MULTI_MSI = 0,
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#endif
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AHCI_HFLAG_WAKE_BEFORE_STOP = BIT(22), /* wake before DMA stop */
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AHCI_HFLAG_YES_ALPM = BIT(23), /* force ALPM cap on */
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AHCI_HFLAG_NO_WRITE_TO_RO = BIT(24), /* don't write to read
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only registers */
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AHCI_HFLAG_USE_LPM_POLICY = BIT(25), /* chipset that should use
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SATA_MOBILE_LPM_POLICY
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as default lpm_policy */
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AHCI_HFLAG_SUSPEND_PHYS = BIT(26), /* handle PHYs during
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suspend/resume */
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AHCI_HFLAG_NO_SXS = BIT(28), /* SXS not supported */
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/* ap->flags bits */
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AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
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ATA_FLAG_ACPI_SATA | ATA_FLAG_AN,
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ICH_MAP = 0x90, /* ICH MAP register */
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PCS_6 = 0x92, /* 6 port PCS */
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PCS_7 = 0x94, /* 7+ port PCS (Denverton) */
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/* em constants */
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EM_MAX_SLOTS = SATA_PMP_MAX_PORTS,
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EM_MAX_RETRY = 5,
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/* em_ctl bits */
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EM_CTL_RST = BIT(9), /* Reset */
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EM_CTL_TM = BIT(8), /* Transmit Message */
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EM_CTL_MR = BIT(0), /* Message Received */
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EM_CTL_ALHD = BIT(26), /* Activity LED */
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EM_CTL_XMT = BIT(25), /* Transmit Only */
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EM_CTL_SMB = BIT(24), /* Single Message Buffer */
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EM_CTL_SGPIO = BIT(19), /* SGPIO messages supported */
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EM_CTL_SES = BIT(18), /* SES-2 messages supported */
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EM_CTL_SAFTE = BIT(17), /* SAF-TE messages supported */
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EM_CTL_LED = BIT(16), /* LED messages supported */
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/* em message type */
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EM_MSG_TYPE_LED = BIT(0), /* LED */
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EM_MSG_TYPE_SAFTE = BIT(1), /* SAF-TE */
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EM_MSG_TYPE_SES2 = BIT(2), /* SES-2 */
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EM_MSG_TYPE_SGPIO = BIT(3), /* SGPIO */
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};
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struct ahci_cmd_hdr {
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__le32 opts;
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__le32 status;
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__le32 tbl_addr;
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__le32 tbl_addr_hi;
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__le32 reserved[4];
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};
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struct ahci_sg {
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__le32 addr;
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__le32 addr_hi;
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__le32 reserved;
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__le32 flags_size;
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};
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struct ahci_em_priv {
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enum sw_activity blink_policy;
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struct timer_list timer;
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unsigned long saved_activity;
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unsigned long activity;
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unsigned long led_state;
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struct ata_link *link;
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};
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struct ahci_port_priv {
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struct ata_link *active_link;
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struct ahci_cmd_hdr *cmd_slot;
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dma_addr_t cmd_slot_dma;
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void *cmd_tbl;
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dma_addr_t cmd_tbl_dma;
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void *rx_fis;
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dma_addr_t rx_fis_dma;
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/* for NCQ spurious interrupt analysis */
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unsigned int ncq_saw_d2h:1;
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unsigned int ncq_saw_dmas:1;
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unsigned int ncq_saw_sdb:1;
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spinlock_t lock; /* protects parent ata_port */
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u32 intr_mask; /* interrupts to enable */
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bool fbs_supported; /* set iff FBS is supported */
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bool fbs_enabled; /* set iff FBS is enabled */
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int fbs_last_dev; /* save FBS.DEV of last FIS */
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/* enclosure management info per PM slot */
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struct ahci_em_priv em_priv[EM_MAX_SLOTS];
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char *irq_desc; /* desc in /proc/interrupts */
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};
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struct ahci_host_priv {
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/* Input fields */
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unsigned int flags; /* AHCI_HFLAG_* */
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u32 mask_port_map; /* mask out particular bits */
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void __iomem * mmio; /* bus-independent mem map */
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u32 cap; /* cap to use */
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u32 cap2; /* cap2 to use */
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u32 version; /* cached version */
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u32 port_map; /* port map to use */
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u32 saved_cap; /* saved initial cap */
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u32 saved_cap2; /* saved initial cap2 */
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u32 saved_port_map; /* saved initial port_map */
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u32 saved_port_cap[AHCI_MAX_PORTS]; /* saved port_cap */
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u32 em_loc; /* enclosure management location */
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u32 em_buf_sz; /* EM buffer size in byte */
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u32 em_msg_type; /* EM message type */
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u32 remapped_nvme; /* NVMe remapped device count */
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bool got_runtime_pm; /* Did we do pm_runtime_get? */
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unsigned int n_clks;
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struct clk_bulk_data *clks; /* Optional */
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unsigned int f_rsts;
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struct reset_control *rsts; /* Optional */
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struct regulator **target_pwrs; /* Optional */
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struct regulator *ahci_regulator;/* Optional */
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struct regulator *phy_regulator;/* Optional */
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/*
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* If platform uses PHYs. There is a 1:1 relation between the port number and
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* the PHY position in this array.
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*/
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struct phy **phys;
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unsigned nports; /* Number of ports */
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void *plat_data; /* Other platform data */
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unsigned int irq; /* interrupt line */
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/*
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* Optional ahci_start_engine override, if not set this gets set to the
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* default ahci_start_engine during ahci_save_initial_config, this can
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* be overridden anytime before the host is activated.
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*/
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void (*start_engine)(struct ata_port *ap);
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/*
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* Optional ahci_stop_engine override, if not set this gets set to the
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* default ahci_stop_engine during ahci_save_initial_config, this can
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* be overridden anytime before the host is activated.
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*/
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int (*stop_engine)(struct ata_port *ap);
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irqreturn_t (*irq_handler)(int irq, void *dev_instance);
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/* only required for per-port MSI(-X) support */
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int (*get_irq_vector)(struct ata_host *host,
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int port);
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};
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extern int ahci_ignore_sss;
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extern const struct attribute_group *ahci_shost_groups[];
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extern const struct attribute_group *ahci_sdev_groups[];
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/*
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* This must be instantiated by the edge drivers. Read the comments
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* for ATA_BASE_SHT
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*/
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#define AHCI_SHT(drv_name) \
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__ATA_BASE_SHT(drv_name), \
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.can_queue = AHCI_MAX_CMDS, \
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.sg_tablesize = AHCI_MAX_SG, \
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.dma_boundary = AHCI_DMA_BOUNDARY, \
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.shost_groups = ahci_shost_groups, \
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.sdev_groups = ahci_sdev_groups, \
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.change_queue_depth = ata_scsi_change_queue_depth, \
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.tag_alloc_policy = BLK_TAG_ALLOC_RR, \
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.slave_configure = ata_scsi_slave_config
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extern struct ata_port_operations ahci_ops;
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extern struct ata_port_operations ahci_platform_ops;
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extern struct ata_port_operations ahci_pmp_retry_srst_ops;
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unsigned int ahci_dev_classify(struct ata_port *ap);
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void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
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u32 opts);
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void ahci_save_initial_config(struct device *dev,
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struct ahci_host_priv *hpriv);
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void ahci_init_controller(struct ata_host *host);
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int ahci_reset_controller(struct ata_host *host);
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int ahci_do_softreset(struct ata_link *link, unsigned int *class,
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int pmp, unsigned long deadline,
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int (*check_ready)(struct ata_link *link));
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int ahci_do_hardreset(struct ata_link *link, unsigned int *class,
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unsigned long deadline, bool *online);
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unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);
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int ahci_stop_engine(struct ata_port *ap);
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void ahci_start_fis_rx(struct ata_port *ap);
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void ahci_start_engine(struct ata_port *ap);
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int ahci_check_ready(struct ata_link *link);
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int ahci_kick_engine(struct ata_port *ap);
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int ahci_port_resume(struct ata_port *ap);
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void ahci_set_em_messages(struct ahci_host_priv *hpriv,
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struct ata_port_info *pi);
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int ahci_reset_em(struct ata_host *host);
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void ahci_print_info(struct ata_host *host, const char *scc_s);
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int ahci_host_activate(struct ata_host *host, const struct scsi_host_template *sht);
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void ahci_error_handler(struct ata_port *ap);
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u32 ahci_handle_port_intr(struct ata_host *host, u32 irq_masked);
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static inline void __iomem *__ahci_port_base(struct ahci_host_priv *hpriv,
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unsigned int port_no)
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{
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void __iomem *mmio = hpriv->mmio;
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return mmio + 0x100 + (port_no * 0x80);
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}
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static inline void __iomem *ahci_port_base(struct ata_port *ap)
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{
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struct ahci_host_priv *hpriv = ap->host->private_data;
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return __ahci_port_base(hpriv, ap->port_no);
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}
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static inline int ahci_nr_ports(u32 cap)
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{
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return (cap & 0x1f) + 1;
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}
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#endif /* _AHCI_H */
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