Archipelago » qemu

/*

 * QEMU AHCI Emulation

 *

 * Copyright (c) 2010 qiaochong@loongson.cn

 * Copyright (c) 2010 Roland Elek <elek.roland@gmail.com>

 * Copyright (c) 2010 Sebastian Herbszt <herbszt@gmx.de>

 * Copyright (c) 2010 Alexander Graf <agraf@suse.de>

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, see <http://www.gnu.org/licenses/>.

 *

 */

#ifndef HW_IDE_AHCI_H

#define HW_IDE_AHCI_H

#define AHCI_PCI_BAR              5

#define AHCI_MAX_PORTS            32

#define AHCI_MAX_SG               168 /* hardware max is 64K */

#define AHCI_DMA_BOUNDARY         0xffffffff

#define AHCI_USE_CLUSTERING       0

#define AHCI_MAX_CMDS             32

#define AHCI_CMD_SZ               32

#define AHCI_CMD_SLOT_SZ          (AHCI_MAX_CMDS * AHCI_CMD_SZ)

#define AHCI_RX_FIS_SZ            256

#define AHCI_CMD_TBL_CDB          0x40

#define AHCI_CMD_TBL_HDR_SZ       0x80

#define AHCI_CMD_TBL_SZ           (AHCI_CMD_TBL_HDR_SZ + (AHCI_MAX_SG * 16))

#define AHCI_CMD_TBL_AR_SZ        (AHCI_CMD_TBL_SZ * AHCI_MAX_CMDS)

#define AHCI_PORT_PRIV_DMA_SZ     (AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_AR_SZ + \

                                   AHCI_RX_FIS_SZ)

#define AHCI_IRQ_ON_SG            (1 << 31)

#define AHCI_CMD_ATAPI            (1 << 5)

#define AHCI_CMD_WRITE            (1 << 6)

#define AHCI_CMD_PREFETCH         (1 << 7)

#define AHCI_CMD_RESET            (1 << 8)

#define AHCI_CMD_CLR_BUSY         (1 << 10)

#define RX_FIS_D2H_REG            0x40 /* offset of D2H Register FIS data */

#define RX_FIS_SDB                0x58 /* offset of SDB FIS data */

#define RX_FIS_UNK                0x60 /* offset of Unknown FIS data */

/* global controller registers */

#define HOST_CAP                  0x00 /* host capabilities */

#define HOST_CTL                  0x04 /* global host control */

#define HOST_IRQ_STAT             0x08 /* interrupt status */

#define HOST_PORTS_IMPL           0x0c /* bitmap of implemented ports */

#define HOST_VERSION              0x10 /* AHCI spec. version compliancy */

/* HOST_CTL bits */

#define HOST_CTL_RESET            (1 << 0)  /* reset controller; self-clear */

#define HOST_CTL_IRQ_EN           (1 << 1)  /* global IRQ enable */

#define HOST_CTL_AHCI_EN          (1 << 31) /* AHCI enabled */

/* HOST_CAP bits */

#define HOST_CAP_SSC              (1 << 14) /* Slumber capable */

#define HOST_CAP_AHCI             (1 << 18) /* AHCI only */

#define HOST_CAP_CLO              (1 << 24) /* Command List Override support */

#define HOST_CAP_SSS              (1 << 27) /* Staggered Spin-up */

#define HOST_CAP_NCQ              (1 << 30) /* Native Command Queueing */

#define HOST_CAP_64               (1 << 31) /* PCI DAC (64-bit DMA) support */

/* registers for each SATA port */

#define PORT_LST_ADDR             0x00 /* command list DMA addr */

#define PORT_LST_ADDR_HI          0x04 /* command list DMA addr hi */

#define PORT_FIS_ADDR             0x08 /* FIS rx buf addr */

#define PORT_FIS_ADDR_HI          0x0c /* FIS rx buf addr hi */

#define PORT_IRQ_STAT             0x10 /* interrupt status */

#define PORT_IRQ_MASK             0x14 /* interrupt enable/disable mask */

#define PORT_CMD                  0x18 /* port command */

#define PORT_TFDATA               0x20 /* taskfile data */

#define PORT_SIG                  0x24 /* device TF signature */

#define PORT_SCR_STAT             0x28 /* SATA phy register: SStatus */

#define PORT_SCR_CTL              0x2c /* SATA phy register: SControl */

#define PORT_SCR_ERR              0x30 /* SATA phy register: SError */

#define PORT_SCR_ACT              0x34 /* SATA phy register: SActive */

#define PORT_CMD_ISSUE            0x38 /* command issue */

#define PORT_RESERVED             0x3c /* reserved */

/* PORT_IRQ_{STAT,MASK} bits */

#define PORT_IRQ_COLD_PRES        (1 << 31) /* cold presence detect */

#define PORT_IRQ_TF_ERR           (1 << 30) /* task file error */

#define PORT_IRQ_HBUS_ERR         (1 << 29) /* host bus fatal error */

#define PORT_IRQ_HBUS_DATA_ERR    (1 << 28) /* host bus data error */

#define PORT_IRQ_IF_ERR           (1 << 27) /* interface fatal error */

#define PORT_IRQ_IF_NONFATAL      (1 << 26) /* interface non-fatal error */

#define PORT_IRQ_OVERFLOW         (1 << 24) /* xfer exhausted available S/G */

#define PORT_IRQ_BAD_PMP          (1 << 23) /* incorrect port multiplier */

#define PORT_IRQ_PHYRDY           (1 << 22) /* PhyRdy changed */

#define PORT_IRQ_DEV_ILCK         (1 << 7) /* device interlock */

#define PORT_IRQ_CONNECT          (1 << 6) /* port connect change status */

#define PORT_IRQ_SG_DONE          (1 << 5) /* descriptor processed */

#define PORT_IRQ_UNK_FIS          (1 << 4) /* unknown FIS rx'd */

#define PORT_IRQ_SDB_FIS          (1 << 3) /* Set Device Bits FIS rx'd */

#define PORT_IRQ_DMAS_FIS         (1 << 2) /* DMA Setup FIS rx'd */

#define PORT_IRQ_PIOS_FIS         (1 << 1) /* PIO Setup FIS rx'd */

#define PORT_IRQ_D2H_REG_FIS      (1 << 0) /* D2H Register FIS rx'd */

#define PORT_IRQ_FREEZE           (PORT_IRQ_HBUS_ERR | PORT_IRQ_IF_ERR |   \

                                   PORT_IRQ_CONNECT | PORT_IRQ_PHYRDY |    \

                                   PORT_IRQ_UNK_FIS)

#define PORT_IRQ_ERROR            (PORT_IRQ_FREEZE | PORT_IRQ_TF_ERR |     \

                                   PORT_IRQ_HBUS_DATA_ERR)

#define 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 */

#define PORT_CMD_ATAPI            (1 << 24) /* Device is ATAPI */

#define PORT_CMD_LIST_ON          (1 << 15) /* cmd list DMA engine running */

#define PORT_CMD_FIS_ON           (1 << 14) /* FIS DMA engine running */

#define PORT_CMD_FIS_RX           (1 << 4) /* Enable FIS receive DMA engine */

#define PORT_CMD_CLO              (1 << 3) /* Command list override */

#define PORT_CMD_POWER_ON         (1 << 2) /* Power up device */

#define PORT_CMD_SPIN_UP          (1 << 1) /* Spin up device */

#define PORT_CMD_START            (1 << 0) /* Enable port DMA engine */

#define PORT_CMD_ICC_MASK         (0xf << 28) /* i/f ICC state mask */

#define PORT_CMD_ICC_ACTIVE       (0x1 << 28) /* Put i/f in active state */

#define PORT_CMD_ICC_PARTIAL      (0x2 << 28) /* Put i/f in partial state */

#define PORT_CMD_ICC_SLUMBER      (0x6 << 28) /* Put i/f in slumber state */

#define PORT_IRQ_STAT_DHRS        (1 << 0) /* Device to Host Register FIS */

#define PORT_IRQ_STAT_PSS         (1 << 1) /* PIO Setup FIS */

#define PORT_IRQ_STAT_DSS         (1 << 2) /* DMA Setup FIS */

#define PORT_IRQ_STAT_SDBS        (1 << 3) /* Set Device Bits */

#define PORT_IRQ_STAT_UFS         (1 << 4) /* Unknown FIS */

#define PORT_IRQ_STAT_DPS         (1 << 5) /* Descriptor Processed */

#define PORT_IRQ_STAT_PCS         (1 << 6) /* Port Connect Change Status */

#define PORT_IRQ_STAT_DMPS        (1 << 7) /* Device Mechanical Presence

                                              Status */

#define PORT_IRQ_STAT_PRCS        (1 << 22) /* File Ready Status */

#define PORT_IRQ_STAT_IPMS        (1 << 23) /* Incorrect Port Multiplier

                                               Status */

#define PORT_IRQ_STAT_OFS         (1 << 24) /* Overflow Status */

#define PORT_IRQ_STAT_INFS        (1 << 26) /* Interface Non-Fatal Error

                                               Status */

#define PORT_IRQ_STAT_IFS         (1 << 27) /* Interface Fatal Error */

#define PORT_IRQ_STAT_HBDS        (1 << 28) /* Host Bus Data Error Status */

#define PORT_IRQ_STAT_HBFS        (1 << 29) /* Host Bus Fatal Error Status */

#define PORT_IRQ_STAT_TFES        (1 << 30) /* Task File Error Status */

#define PORT_IRQ_STAT_CPDS        (1 << 31) /* Code Port Detect Status */

/* ap->flags bits */

#define AHCI_FLAG_NO_NCQ                  (1 << 24)

#define AHCI_FLAG_IGN_IRQ_IF_ERR          (1 << 25) /* ignore IRQ_IF_ERR */

#define AHCI_FLAG_HONOR_PI                (1 << 26) /* honor PORTS_IMPL */

#define AHCI_FLAG_IGN_SERR_INTERNAL       (1 << 27) /* ignore SERR_INTERNAL */

#define AHCI_FLAG_32BIT_ONLY              (1 << 28) /* force 32bit */

#define ATA_SRST                          (1 << 2)  /* software reset */

#define STATE_RUN                         0

#define STATE_RESET                       1

#define SATA_SCR_SSTATUS_DET_NODEV        0x0

#define SATA_SCR_SSTATUS_DET_DEV_PRESENT_PHY_UP 0x3

#define SATA_SCR_SSTATUS_SPD_NODEV        0x00

#define SATA_SCR_SSTATUS_SPD_GEN1         0x10

#define SATA_SCR_SSTATUS_IPM_NODEV        0x000

#define SATA_SCR_SSTATUS_IPM_ACTIVE       0X100

#define AHCI_SCR_SCTL_DET                 0xf

#define SATA_FIS_TYPE_REGISTER_H2D        0x27

#define SATA_FIS_REG_H2D_UPDATE_COMMAND_REGISTER 0x80

#define AHCI_CMD_HDR_CMD_FIS_LEN           0x1f

#define AHCI_CMD_HDR_PRDT_LEN              16

#define SATA_SIGNATURE_CDROM               0xeb140000

#define SATA_SIGNATURE_DISK                0x00000101

#define AHCI_GENERIC_HOST_CONTROL_REGS_MAX_ADDR 0x20

                                            /* Shouldn't this be 0x2c? */

#define AHCI_PORT_REGS_START_ADDR          0x100

#define AHCI_PORT_ADDR_OFFSET_MASK         0x7f

#define AHCI_PORT_ADDR_OFFSET_LEN          0x80

#define AHCI_NUM_COMMAND_SLOTS             31

#define AHCI_SUPPORTED_SPEED               20

#define AHCI_SUPPORTED_SPEED_GEN1          1

#define AHCI_VERSION_1_0                   0x10000

#define AHCI_PROGMODE_MAJOR_REV_1          1

#define AHCI_COMMAND_TABLE_ACMD            0x40

#define IDE_FEATURE_DMA                    1

#define READ_FPDMA_QUEUED                  0x60

#define WRITE_FPDMA_QUEUED                 0x61

#define RES_FIS_DSFIS                      0x00

#define RES_FIS_PSFIS                      0x20

#define RES_FIS_RFIS                       0x40

#define RES_FIS_SDBFIS                     0x58

#define RES_FIS_UFIS                       0x60

typedef struct AHCIControlRegs {

    uint32_t    cap;

    uint32_t    ghc;

    uint32_t    irqstatus;

    uint32_t    impl;

    uint32_t    version;

} AHCIControlRegs;

typedef struct AHCIPortRegs {

    uint32_t    lst_addr;

    uint32_t    lst_addr_hi;

    uint32_t    fis_addr;

    uint32_t    fis_addr_hi;

    uint32_t    irq_stat;

    uint32_t    irq_mask;

    uint32_t    cmd;

    uint32_t    unused0;

    uint32_t    tfdata;

    uint32_t    sig;

    uint32_t    scr_stat;

    uint32_t    scr_ctl;

    uint32_t    scr_err;

    uint32_t    scr_act;

    uint32_t    cmd_issue;

    uint32_t    reserved;

} AHCIPortRegs;

typedef struct AHCICmdHdr {

    uint32_t    opts;

    uint32_t    status;

    uint64_t    tbl_addr;

    uint32_t    reserved[4];

} __attribute__ ((packed)) AHCICmdHdr;

typedef struct AHCI_SG {

    uint64_t    addr;

    uint32_t    reserved;

    uint32_t    flags_size;

} __attribute__ ((packed)) AHCI_SG;

typedef struct AHCIDevice AHCIDevice;

typedef struct NCQTransferState {

    AHCIDevice *drive;

    BlockDriverAIOCB *aiocb;

    QEMUSGList sglist;

    int is_read;

    uint16_t sector_count;

    uint64_t lba;

    uint8_t tag;

    int slot;

    int used;

} NCQTransferState;

struct AHCIDevice {

    IDEDMA dma;

    IDEBus port;

    int port_no;

    uint32_t port_state;

    uint32_t finished;

    AHCIPortRegs port_regs;

    struct AHCIState *hba;

    QEMUBH *check_bh;

    uint8_t *lst;

    uint8_t *res_fis;

    int dma_status;

    int done_atapi_packet;

    int busy_slot;

    int init_d2h_sent;

    BlockDriverCompletionFunc *dma_cb;

    AHCICmdHdr *cur_cmd;

    NCQTransferState ncq_tfs[AHCI_MAX_CMDS];

};

typedef struct AHCIState {

    AHCIDevice *dev;

    AHCIControlRegs control_regs;

    int mem;

    int ports;

    qemu_irq irq;

} AHCIState;

typedef struct AHCIPCIState {

    PCIDevice card;

    AHCIState ahci;

} AHCIPCIState;

typedef struct NCQFrame {

    uint8_t fis_type;

    uint8_t c;

    uint8_t command;

    uint8_t sector_count_low;

    uint8_t lba0;

    uint8_t lba1;

    uint8_t lba2;

    uint8_t fua;

    uint8_t lba3;

    uint8_t lba4;

    uint8_t lba5;

    uint8_t sector_count_high;

    uint8_t tag;

    uint8_t reserved5;

    uint8_t reserved6;

    uint8_t control;

    uint8_t reserved7;

    uint8_t reserved8;

    uint8_t reserved9;

    uint8_t reserved10;

} __attribute__ ((packed)) NCQFrame;

void ahci_init(AHCIState *s, DeviceState *qdev, int ports);

void ahci_uninit(AHCIState *s);

void ahci_reset(void *opaque);

#endif /* HW_IDE_AHCI_H */