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qemu-e2k/hw/ide/ahci_internal.h
Alexander Bulekov f63192b054 hw: replace most qemu_bh_new calls with qemu_bh_new_guarded 
This protects devices from bh->mmio reentrancy issues.

Thanks: Thomas Huth <thuth@redhat.com> for diagnosing OS X test failure.
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230427211013.2994127-5-alxndr@bu.edu>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-04-28 11:31:54 +02:00

395 lines
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/*
* 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 2.1 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_INTERNAL_H
#define HW_IDE_AHCI_INTERNAL_H
#include "hw/ide/ahci.h"
#include "hw/ide/internal.h"
#include "hw/pci/pci_device.h"
#define AHCI_MEM_BAR_SIZE 0x1000
#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 (1U << 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 */
enum AHCIHostReg {
AHCI_HOST_REG_CAP = 0, /* CAP: host capabilities */
AHCI_HOST_REG_CTL = 1, /* GHC: global host control */
AHCI_HOST_REG_IRQ_STAT = 2, /* IS: interrupt status */
AHCI_HOST_REG_PORTS_IMPL = 3, /* PI: bitmap of implemented ports */
AHCI_HOST_REG_VERSION = 4, /* VS: AHCI spec. version compliancy */
AHCI_HOST_REG_CCC_CTL = 5, /* CCC_CTL: CCC Control */
AHCI_HOST_REG_CCC_PORTS = 6, /* CCC_PORTS: CCC Ports */
AHCI_HOST_REG_EM_LOC = 7, /* EM_LOC: Enclosure Mgmt Location */
AHCI_HOST_REG_EM_CTL = 8, /* EM_CTL: Enclosure Mgmt Control */
AHCI_HOST_REG_CAP2 = 9, /* CAP2: host capabilities, extended */
AHCI_HOST_REG_BOHC = 10, /* BOHC: firmare/os handoff ctrl & status */
AHCI_HOST_REG__COUNT = 11
};
/* 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 (1U << 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 (1U << 31) /* PCI DAC (64-bit DMA) support */
/* registers for each SATA port */
enum AHCIPortReg {
AHCI_PORT_REG_LST_ADDR = 0, /* PxCLB: command list DMA addr */
AHCI_PORT_REG_LST_ADDR_HI = 1, /* PxCLBU: command list DMA addr hi */
AHCI_PORT_REG_FIS_ADDR = 2, /* PxFB: FIS rx buf addr */
AHCI_PORT_REG_FIS_ADDR_HI = 3, /* PxFBU: FIX rx buf addr hi */
AHCI_PORT_REG_IRQ_STAT = 4, /* PxIS: interrupt status */
AHCI_PORT_REG_IRQ_MASK = 5, /* PxIE: interrupt enable/disable mask */
AHCI_PORT_REG_CMD = 6, /* PxCMD: port command */
/* RESERVED */
AHCI_PORT_REG_TFDATA = 8, /* PxTFD: taskfile data */
AHCI_PORT_REG_SIG = 9, /* PxSIG: device TF signature */
AHCI_PORT_REG_SCR_STAT = 10, /* PxSSTS: SATA phy register: SStatus */
AHCI_PORT_REG_SCR_CTL = 11, /* PxSCTL: SATA phy register: SControl */
AHCI_PORT_REG_SCR_ERR = 12, /* PxSERR: SATA phy register: SError */
AHCI_PORT_REG_SCR_ACT = 13, /* PxSACT: SATA phy register: SActive */
AHCI_PORT_REG_CMD_ISSUE = 14, /* PxCI: command issue */
AHCI_PORT_REG_SCR_NOTIF = 15, /* PxSNTF: SATA phy register: SNotification */
AHCI_PORT_REG_FIS_CTL = 16, /* PxFBS: Port multiplier switching ctl */
AHCI_PORT_REG_DEV_SLEEP = 17, /* PxDEVSLP: device sleep control */
/* RESERVED */
AHCI_PORT_REG_VENDOR_1 = 28, /* PxVS: Vendor Specific */
AHCI_PORT_REG_VENDOR_2 = 29,
AHCI_PORT_REG_VENDOR_3 = 30,
AHCI_PORT_REG_VENDOR_4 = 31,
AHCI_PORT_REG__COUNT = 32
};
/* Port interrupt bit descriptors */
enum AHCIPortIRQ {
AHCI_PORT_IRQ_BIT_DHRS = 0,
AHCI_PORT_IRQ_BIT_PSS = 1,
AHCI_PORT_IRQ_BIT_DSS = 2,
AHCI_PORT_IRQ_BIT_SDBS = 3,
AHCI_PORT_IRQ_BIT_UFS = 4,
AHCI_PORT_IRQ_BIT_DPS = 5,
AHCI_PORT_IRQ_BIT_PCS = 6,
AHCI_PORT_IRQ_BIT_DMPS = 7,
/* RESERVED */
AHCI_PORT_IRQ_BIT_PRCS = 22,
AHCI_PORT_IRQ_BIT_IPMS = 23,
AHCI_PORT_IRQ_BIT_OFS = 24,
/* RESERVED */
AHCI_PORT_IRQ_BIT_INFS = 26,
AHCI_PORT_IRQ_BIT_IFS = 27,
AHCI_PORT_IRQ_BIT_HBDS = 28,
AHCI_PORT_IRQ_BIT_HBFS = 29,
AHCI_PORT_IRQ_BIT_TFES = 30,
AHCI_PORT_IRQ_BIT_CPDS = 31,
AHCI_PORT_IRQ__COUNT = 32
};
/* PORT_IRQ_{STAT,MASK} bits */
#define PORT_IRQ_COLD_PRES (1U << 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 */
/* reserved */
#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 */
/* reserved */
#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 (0xfU << 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_CMD_RO_MASK 0x007dffe0 /* Which CMD bits are read only? */
/* 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 SATA_FIS_TYPE_REGISTER_D2H 0x34
#define SATA_FIS_TYPE_PIO_SETUP 0x5f
#define SATA_FIS_TYPE_SDB 0xA1
#define AHCI_CMD_HDR_CMD_FIS_LEN 0x1f
#define AHCI_CMD_HDR_PRDT_LEN 16
#define SATA_SIGNATURE_CDROM 0xeb140101
#define SATA_SIGNATURE_DISK 0x00000101
#define AHCI_GENERIC_HOST_CONTROL_REGS_MAX_ADDR 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 AHCI_PRDT_SIZE_MASK 0x3fffff
#define IDE_FEATURE_DMA 1
#define READ_FPDMA_QUEUED 0x60
#define WRITE_FPDMA_QUEUED 0x61
#define NCQ_NON_DATA 0x63
#define RECEIVE_FPDMA_QUEUED 0x65
#define SEND_FPDMA_QUEUED 0x64
#define NCQ_FIS_FUA_MASK 0x80
#define NCQ_FIS_RARC_MASK 0x01
#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
#define SATA_CAP_SIZE 0x8
#define SATA_CAP_REV 0x2
#define SATA_CAP_BAR 0x4
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 {
uint16_t opts;
uint16_t prdtl;
uint32_t status;
uint64_t tbl_addr;
uint32_t reserved[4];
} QEMU_PACKED AHCICmdHdr;
typedef struct AHCI_SG {
uint64_t addr;
uint32_t reserved;
uint32_t flags_size;
} QEMU_PACKED AHCI_SG;
typedef struct NCQTransferState {
AHCIDevice *drive;
BlockAIOCB *aiocb;
AHCICmdHdr *cmdh;
QEMUSGList sglist;
BlockAcctCookie acct;
uint32_t sector_count;
uint64_t lba;
uint8_t tag;
uint8_t cmd;
uint8_t slot;
bool used;
bool halt;
} 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;
bool done_first_drq;
int32_t busy_slot;
bool init_d2h_sent;
AHCICmdHdr *cur_cmd;
NCQTransferState ncq_tfs[AHCI_MAX_CMDS];
MemReentrancyGuard mem_reentrancy_guard;
};
struct AHCIPCIState {
/*< private >*/
PCIDevice parent_obj;
/*< public >*/
AHCIState ahci;
};
extern const VMStateDescription vmstate_ahci;
#define VMSTATE_AHCI(_field, _state) { \
.name = (stringify(_field)), \
.size = sizeof(AHCIState), \
.vmsd = &vmstate_ahci, \
.flags = VMS_STRUCT, \
.offset = vmstate_offset_value(_state, _field, AHCIState), \
}
/**
* NCQFrame is the same as a Register H2D FIS (described in SATA 3.2),
* but some fields have been re-mapped and re-purposed, as seen in
* SATA 3.2 section 13.6.4.1 ("READ FPDMA QUEUED")
*
* cmd_fis[3], feature 7:0, becomes sector count 7:0.
* cmd_fis[7], device 7:0, uses bit 7 as the Force Unit Access bit.
* cmd_fis[11], feature 15:8, becomes sector count 15:8.
* cmd_fis[12], count 7:0, becomes the NCQ TAG (7:3) and RARC bit (0)
* cmd_fis[13], count 15:8, becomes the priority value (7:6)
* bytes 16-19 become an le32 "auxiliary" field.
*/
typedef struct NCQFrame {
uint8_t fis_type;
uint8_t c;
uint8_t command;
uint8_t sector_count_low; /* (feature 7:0) */
uint8_t lba0;
uint8_t lba1;
uint8_t lba2;
uint8_t fua; /* (device 7:0) */
uint8_t lba3;
uint8_t lba4;
uint8_t lba5;
uint8_t sector_count_high; /* (feature 15:8) */
uint8_t tag; /* (count 0:7) */
uint8_t prio; /* (count 15:8) */
uint8_t icc;
uint8_t control;
uint8_t aux0;
uint8_t aux1;
uint8_t aux2;
uint8_t aux3;
} QEMU_PACKED NCQFrame;
typedef struct SDBFIS {
uint8_t type;
uint8_t flags;
uint8_t status;
uint8_t error;
uint32_t payload;
} QEMU_PACKED SDBFIS;
void ahci_realize(AHCIState *s, DeviceState *qdev, AddressSpace *as, int ports);
void ahci_init(AHCIState *s, DeviceState *qdev);
void ahci_uninit(AHCIState *s);
void ahci_reset(AHCIState *s);
#endif /* HW_IDE_AHCI_INTERNAL_H */
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