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qemu-e2k/hw/ide/ahci.h
David Gibson 10ca2943aa ide/ahci: Use universal DMA helper functions 
The AHCI device can provide both PCI and SysBus AHCI device
emulations.  For this reason, it wasn't previously converted to use
the pci_dma_*() helper functions.  Now that we have universal DMA
helper functions, this converts AHCI to use them.

The DMAContext is obtained from pci_dma_context() in the PCI case and
set to NULL in the SysBus case (i.e. we assume for now that a SysBus
AHCI has no IOMMU translation).

Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-06-27 16:33:25 -05:00

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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_H
#define HW_IDE_AHCI_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 (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
#define SATA_CAP_SIZE 0x8
#define SATA_CAP_REV 0x2
#define SATA_CAP_BAR 0x4
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];
} QEMU_PACKED AHCICmdHdr;
typedef struct AHCI_SG {
uint64_t addr;
uint32_t reserved;
uint32_t flags_size;
} QEMU_PACKED AHCI_SG;
typedef struct AHCIDevice AHCIDevice;
typedef struct NCQTransferState {
AHCIDevice *drive;
BlockDriverAIOCB *aiocb;
QEMUSGList sglist;
BlockAcctCookie acct;
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;
MemoryRegion mem;
MemoryRegion idp; /* Index-Data Pair I/O port space */
unsigned idp_offset; /* Offset of index in I/O port space */
uint32_t idp_index; /* Current IDP index */
int ports;
qemu_irq irq;
DMAContext *dma;
} 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;
} QEMU_PACKED NCQFrame;
void ahci_init(AHCIState *s, DeviceState *qdev, DMAContext *dma, int ports);
void ahci_uninit(AHCIState *s);
void ahci_reset(AHCIState *s);
#endif /* HW_IDE_AHCI_H */
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