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qemu/hw/ide/ahci_internal.h
Paolo Bonzini ae79c2db15 ahci: fix FIS I bit and PIO Setup FIS interrupt 
The "I" bit in PIO Setup and D2H FISes is exclusively a device concept
and the irqstatus register in the controller does not matter.  The SATA
spec says when it should be one; for D2H FISes in practice it is always
set, while the PIO Setup FIS has several subcases that are documented in
the patch.

Also, the PIO Setup FIS interrupt is actually generated _after_ data
has been received.

Someone should probably spend some time reading the SATA specification and
figuring out the more obscure fields in the PIO Setup FIS, but this is enough
to fix SeaBIOS booting from ATAPI CD-ROMs over an AHCI controller.

Fixes: 956556e131
Reported-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20180622165159.19863-1-pbonzini@redhat.com
[Minor edit to avoid ATAPI comment ambiguity. --js]
Signed-off-by: John Snow <jsnow@redhat.com>
2018-06-25 16:50:48 -04:00

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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 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/sysbus.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];
};
struct AHCIPCIState {
/*< private >*/
PCIDevice parent_obj;
/*< public >*/
AHCIState ahci;
};
#define ICH_AHCI(obj) \
OBJECT_CHECK(AHCIPCIState, (obj), TYPE_ICH9_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);
#define SYSBUS_AHCI(obj) OBJECT_CHECK(SysbusAHCIState, (obj), TYPE_SYSBUS_AHCI)
#endif /* HW_IDE_AHCI_H */
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