diff options
Diffstat (limited to 'hw/ide')
| -rw-r--r-- | hw/ide/ahci.c | 1524 |
1 files changed, 1524 insertions, 0 deletions
diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c new file mode 100644 index 0000000000..f937a92edf --- /dev/null +++ b/hw/ide/ahci.c @@ -0,0 +1,1524 @@ +/* + * 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/>. + * + * + * lspci dump of a ICH-9 real device in IDE mode (hopefully close enough): + * + * 00:1f.2 SATA controller [0106]: Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 6 port SATA AHCI Controller [8086:2922] (rev 02) (prog-if 01 [AHCI 1.0]) + * Subsystem: Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 6 port SATA AHCI Controller [8086:2922] + * Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ + * Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- + * Latency: 0 + * Interrupt: pin B routed to IRQ 222 + * Region 0: I/O ports at d000 [size=8] + * Region 1: I/O ports at cc00 [size=4] + * Region 2: I/O ports at c880 [size=8] + * Region 3: I/O ports at c800 [size=4] + * Region 4: I/O ports at c480 [size=32] + * Region 5: Memory at febf9000 (32-bit, non-prefetchable) [size=2K] + * Capabilities: [80] Message Signalled Interrupts: Mask- 64bit- Count=1/16 Enable+ + * Address: fee0f00c Data: 41d9 + * Capabilities: [70] Power Management version 3 + * Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold-) + * Status: D0 PME-Enable- DSel=0 DScale=0 PME- + * Capabilities: [a8] SATA HBA <?> + * Capabilities: [b0] Vendor Specific Information <?> + * Kernel driver in use: ahci + * Kernel modules: ahci + * 00: 86 80 22 29 07 04 b0 02 02 01 06 01 00 00 00 00 + * 10: 01 d0 00 00 01 cc 00 00 81 c8 00 00 01 c8 00 00 + * 20: 81 c4 00 00 00 90 bf fe 00 00 00 00 86 80 22 29 + * 30: 00 00 00 00 80 00 00 00 00 00 00 00 0f 02 00 00 + * 40: 00 80 00 80 00 00 00 00 00 00 00 00 00 00 00 00 + * 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + * 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + * 70: 01 a8 03 40 08 00 00 00 00 00 00 00 00 00 00 00 + * 80: 05 70 09 00 0c f0 e0 fe d9 41 00 00 00 00 00 00 + * 90: 40 00 0f 82 93 01 00 00 00 00 00 00 00 00 00 00 + * a0: ac 00 00 00 0a 00 12 00 12 b0 10 00 48 00 00 00 + * b0: 09 00 06 20 00 00 00 00 00 00 00 00 00 00 00 00 + * c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + * d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + * e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + * f0: 00 00 00 00 00 00 00 00 86 0f 02 00 00 00 00 00 + * + */ + +#include <hw/hw.h> +#include <hw/msi.h> +#include <hw/pc.h> +#include <hw/pci.h> + +#include "monitor.h" +#include "dma.h" +#include "cpu-common.h" +#include "blockdev.h" +#include "internal.h" +#include <hw/ide/pci.h> + +/* #define DEBUG_AHCI */ + +#ifdef DEBUG_AHCI +#define DPRINTF(port, fmt, ...) \ +do { fprintf(stderr, "ahci: %s: [%d] ", __FUNCTION__, port); \ + fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) +#else +#define DPRINTF(port, fmt, ...) do {} while(0) +#endif + +#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 SATA_PORTS 4 + +#define AHCI_PORT_REGS_START_ADDR 0x100 +#define AHCI_PORT_REGS_END_ADDR (AHCI_PORT_REGS_START_ADDR + SATA_PORTS * 0x80) +#define AHCI_PORT_ADDR_OFFSET_MASK 0x7f + +#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; + BlockDriverCompletionFunc *dma_cb; + AHCICmdHdr *cur_cmd; + NCQTransferState ncq_tfs[AHCI_MAX_CMDS]; +}; + +typedef struct AHCIState { + AHCIDevice dev[SATA_PORTS]; + AHCIControlRegs control_regs; + int mem; + 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; + +static void check_cmd(AHCIState *s, int port); +static int handle_cmd(AHCIState *s,int port,int slot); +static void ahci_reset_port(AHCIState *s, int port); +static void ahci_write_fis_d2h(AHCIDevice *ad, uint8_t *cmd_fis); + +static uint32_t ahci_port_read(AHCIState *s, int port, int offset) +{ + uint32_t val; + AHCIPortRegs *pr; + pr = &s->dev[port].port_regs; + + switch (offset) { + case PORT_LST_ADDR: + val = pr->lst_addr; + break; + case PORT_LST_ADDR_HI: + val = pr->lst_addr_hi; + break; + case PORT_FIS_ADDR: + val = pr->fis_addr; + break; + case PORT_FIS_ADDR_HI: + val = pr->fis_addr_hi; + break; + case PORT_IRQ_STAT: + val = pr->irq_stat; + break; + case PORT_IRQ_MASK: + val = pr->irq_mask; + break; + case PORT_CMD: + val = pr->cmd; + break; + case PORT_TFDATA: + val = ((uint16_t)s->dev[port].port.ifs[0].error << 8) | + s->dev[port].port.ifs[0].status; + break; + case PORT_SIG: + val = pr->sig; + break; + case PORT_SCR_STAT: + if (s->dev[port].port.ifs[0].bs) { + val = SATA_SCR_SSTATUS_DET_DEV_PRESENT_PHY_UP | + SATA_SCR_SSTATUS_SPD_GEN1 | SATA_SCR_SSTATUS_IPM_ACTIVE; + } else { + val = SATA_SCR_SSTATUS_DET_NODEV; + } + break; + case PORT_SCR_CTL: + val = pr->scr_ctl; + break; + case PORT_SCR_ERR: + val = pr->scr_err; + break; + case PORT_SCR_ACT: + pr->scr_act &= ~s->dev[port].finished; + s->dev[port].finished = 0; + val = pr->scr_act; + break; + case PORT_CMD_ISSUE: + val = pr->cmd_issue; + break; + case PORT_RESERVED: + default: + val = 0; + } + DPRINTF(port, "offset: 0x%x val: 0x%x\n", offset, val); + return val; + +} + +static void ahci_irq_raise(AHCIState *s, AHCIDevice *dev) +{ + struct AHCIPCIState *d = container_of(s, AHCIPCIState, ahci); + + DPRINTF(0, "raise irq\n"); + + if (msi_enabled(&d->card)) { + msi_notify(&d->card, 0); + } else { + qemu_irq_raise(s->irq); + } +} + +static void ahci_irq_lower(AHCIState *s, AHCIDevice *dev) +{ + struct AHCIPCIState *d = container_of(s, AHCIPCIState, ahci); + + DPRINTF(0, "lower irq\n"); + + if (!msi_enabled(&d->card)) { + qemu_irq_lower(s->irq); + } +} + +static void ahci_check_irq(AHCIState *s) +{ + int i; + + DPRINTF(-1, "check irq %#x\n", s->control_regs.irqstatus); + + for (i = 0; i < SATA_PORTS; i++) { + AHCIPortRegs *pr = &s->dev[i].port_regs; + if (pr->irq_stat & pr->irq_mask) { + s->control_regs.irqstatus |= (1 << i); + } + } + + if (s->control_regs.irqstatus && + (s->control_regs.ghc & HOST_CTL_IRQ_EN)) { + ahci_irq_raise(s, NULL); + } else { + ahci_irq_lower(s, NULL); + } +} + +static void ahci_trigger_irq(AHCIState *s, AHCIDevice *d, + int irq_type) +{ + DPRINTF(d->port_no, "trigger irq %#x -> %x\n", + irq_type, d->port_regs.irq_mask & irq_type); + + d->port_regs.irq_stat |= irq_type; + ahci_check_irq(s); +} + +static void map_page(uint8_t **ptr, uint64_t addr, uint32_t wanted) +{ + target_phys_addr_t len = wanted; + + if (*ptr) { + cpu_physical_memory_unmap(*ptr, 1, len, len); + } + + *ptr = cpu_physical_memory_map(addr, &len, 1); + if (len < wanted) { + cpu_physical_memory_unmap(*ptr, 1, len, len); + *ptr = NULL; + } +} + +static void ahci_port_write(AHCIState *s, int port, int offset, uint32_t val) +{ + AHCIPortRegs *pr = &s->dev[port].port_regs; + + DPRINTF(port, "offset: 0x%x val: 0x%x\n", offset, val); + switch (offset) { + case PORT_LST_ADDR: + pr->lst_addr = val; + map_page(&s->dev[port].lst, + ((uint64_t)pr->lst_addr_hi << 32) | pr->lst_addr, 1024); + s->dev[port].cur_cmd = NULL; + break; + case PORT_LST_ADDR_HI: + pr->lst_addr_hi = val; + map_page(&s->dev[port].lst, + ((uint64_t)pr->lst_addr_hi << 32) | pr->lst_addr, 1024); + s->dev[port].cur_cmd = NULL; + break; + case PORT_FIS_ADDR: + pr->fis_addr = val; + map_page(&s->dev[port].res_fis, + ((uint64_t)pr->fis_addr_hi << 32) | pr->fis_addr, 256); + break; + case PORT_FIS_ADDR_HI: + pr->fis_addr_hi = val; + map_page(&s->dev[port].res_fis, + ((uint64_t)pr->fis_addr_hi << 32) | pr->fis_addr, 256); + break; + case PORT_IRQ_STAT: + pr->irq_stat &= ~val; + break; + case PORT_IRQ_MASK: + pr->irq_mask = val & 0xfdc000ff; + ahci_check_irq(s); + break; + case PORT_CMD: + pr->cmd = val & ~(PORT_CMD_LIST_ON | PORT_CMD_FIS_ON); + + if (pr->cmd & PORT_CMD_START) { + pr->cmd |= PORT_CMD_LIST_ON; + } + + if (pr->cmd & PORT_CMD_FIS_RX) { + pr->cmd |= PORT_CMD_FIS_ON; + } + + check_cmd(s, port); + break; + case PORT_TFDATA: + s->dev[port].port.ifs[0].error = (val >> 8) & 0xff; + s->dev[port].port.ifs[0].status = val & 0xff; + break; + case PORT_SIG: + pr->sig = val; + break; + case PORT_SCR_STAT: + pr->scr_stat = val; + break; + case PORT_SCR_CTL: + if (((pr->scr_ctl & AHCI_SCR_SCTL_DET) == 1) && + ((val & AHCI_SCR_SCTL_DET) == 0)) { + ahci_reset_port(s, port); + } + pr->scr_ctl = val; + break; + case PORT_SCR_ERR: + pr->scr_err &= ~val; + break; + case PORT_SCR_ACT: + /* RW1 */ + pr->scr_act |= val; + break; + case PORT_CMD_ISSUE: + pr->cmd_issue |= val; + check_cmd(s, port); + break; + default: + break; + } +} + +static uint32_t ahci_mem_readl(void *ptr, target_phys_addr_t addr) +{ + AHCIState *s = ptr; + uint32_t val = 0; + + addr = addr & 0xfff; + if (addr < AHCI_GENERIC_HOST_CONTROL_REGS_MAX_ADDR) { + switch (addr) { + case HOST_CAP: + val = s->control_regs.cap; + break; + case HOST_CTL: + val = s->control_regs.ghc; + break; + case HOST_IRQ_STAT: + val = s->control_regs.irqstatus; + break; + case HOST_PORTS_IMPL: + val = s->control_regs.impl; + break; + case HOST_VERSION: + val = s->control_regs.version; + break; + } + + DPRINTF(-1, "(addr 0x%08X), val 0x%08X\n", (unsigned) addr, val); + } else if ((addr >= AHCI_PORT_REGS_START_ADDR) && + (addr < AHCI_PORT_REGS_END_ADDR)) { + val = ahci_port_read(s, (addr - AHCI_PORT_REGS_START_ADDR) >> 7, + addr & AHCI_PORT_ADDR_OFFSET_MASK); + } + + return val; +} + + + +static void ahci_mem_writel(void *ptr, target_phys_addr_t addr, uint32_t val) +{ + AHCIState *s = ptr; + addr = addr & 0xfff; + + /* Only aligned reads are allowed on AHCI */ + if (addr & 3) { + fprintf(stderr, "ahci: Mis-aligned write to addr 0x" + TARGET_FMT_plx "\n", addr); + return; + } + + if (addr < AHCI_GENERIC_HOST_CONTROL_REGS_MAX_ADDR) { + DPRINTF(-1, "(addr 0x%08X), val 0x%08X\n", (unsigned) addr, val); + + switch (addr) { + case HOST_CAP: /* R/WO, RO */ + /* FIXME handle R/WO */ + break; + case HOST_CTL: /* R/W */ + if (val & HOST_CTL_RESET) { + DPRINTF(-1, "HBA Reset\n"); + /* FIXME reset? */ + } else { + s->control_regs.ghc = (val & 0x3) | HOST_CTL_AHCI_EN; + ahci_check_irq(s); + } + break; + case HOST_IRQ_STAT: /* R/WC, RO */ + s->control_regs.irqstatus &= ~val; + ahci_check_irq(s); + break; + case HOST_PORTS_IMPL: /* R/WO, RO */ + /* FIXME handle R/WO */ + break; + case HOST_VERSION: /* RO */ + /* FIXME report write? */ + break; + default: + DPRINTF(-1, "write to unknown register 0x%x\n", (unsigned)addr); + } + } else if ((addr >= AHCI_PORT_REGS_START_ADDR) && + (addr < AHCI_PORT_REGS_END_ADDR)) { + ahci_port_write(s, (addr - AHCI_PORT_REGS_START_ADDR) >> 7, + addr & AHCI_PORT_ADDR_OFFSET_MASK, val); + } + +} + +static CPUReadMemoryFunc * const ahci_readfn[3]={ + ahci_mem_readl, + ahci_mem_readl, + ahci_mem_readl +}; + +static CPUWriteMemoryFunc * const ahci_writefn[3]={ + ahci_mem_writel, + ahci_mem_writel, + ahci_mem_writel +}; + +static void ahci_reg_init(AHCIState *s) +{ + int i; + + s->control_regs.cap = (SATA_PORTS - 1) | + (AHCI_NUM_COMMAND_SLOTS << 8) | + (AHCI_SUPPORTED_SPEED_GEN1 << AHCI_SUPPORTED_SPEED) | + HOST_CAP_NCQ | HOST_CAP_AHCI; + + s->control_regs.impl = (1 << SATA_PORTS) - 1; + + s->control_regs.version = AHCI_VERSION_1_0; + + for (i = 0; i < SATA_PORTS; i++) { + s->dev[i].port_state = STATE_RUN; + } +} + +static uint32_t read_from_sglist(uint8_t *buffer, uint32_t len, + QEMUSGList *sglist) +{ + uint32_t i = 0; + uint32_t total = 0, once; + ScatterGatherEntry *cur_prd; + uint32_t sgcount; + + cur_prd = sglist->sg; + sgcount = sglist->nsg; + for (i = 0; len && sgcount; i++) { + once = MIN(cur_prd->len, len); + cpu_physical_memory_read(cur_prd->base, buffer, once); + cur_prd++; + sgcount--; + len -= once; + buffer += once; + total += once; + } + + return total; +} + +static uint32_t write_to_sglist(uint8_t *buffer, uint32_t len, + QEMUSGList *sglist) +{ + uint32_t i = 0; + uint32_t total = 0, once; + ScatterGatherEntry *cur_prd; + uint32_t sgcount; + + DPRINTF(-1, "total: 0x%x bytes\n", len); + + cur_prd = sglist->sg; + sgcount = sglist->nsg; + for (i = 0; len && sgcount; i++) { + once = MIN(cur_prd->len, len); + DPRINTF(-1, "write 0x%x bytes to 0x%lx\n", once, (long)cur_prd->base); + cpu_physical_memory_write(cur_prd->base, buffer, once); + cur_prd++; + sgcount--; + len -= once; + buffer += once; + total += once; + } + + return total; +} + +static void check_cmd(AHCIState *s, int port) +{ + AHCIPortRegs *pr = &s->dev[port].port_regs; + int slot; + + if ((pr->cmd & PORT_CMD_START) && pr->cmd_issue) { + for (slot = 0; (slot < 32) && pr->cmd_issue; slot++) { + if ((pr->cmd_issue & (1 << slot)) && + !handle_cmd(s, port, slot)) { + pr->cmd_issue &= ~(1 << slot); + } + } + } +} + +static void ahci_check_cmd_bh(void *opaque) +{ + AHCIDevice *ad = opaque; + + qemu_bh_delete(ad->check_bh); + ad->check_bh = NULL; + + if ((ad->busy_slot != -1) && + !(ad->port.ifs[0].status & (BUSY_STAT|DRQ_STAT))) { + /* no longer busy */ + ad->port_regs.cmd_issue &= ~(1 << ad->busy_slot); + ad->busy_slot = -1; + } + + check_cmd(ad->hba, ad->port_no); +} + +static void ahci_reset_port(AHCIState *s, int port) +{ + AHCIDevice *d = &s->dev[port]; + AHCIPortRegs *pr = &d->port_regs; + IDEState *ide_state = &d->port.ifs[0]; + uint8_t init_fis[0x20]; + uint32_t tfd; + int i; + + DPRINTF(port, "reset port\n"); + + ide_bus_reset(&d->port); + ide_state->ncq_queues = AHCI_MAX_CMDS; + + pr->irq_stat = 0; + pr->irq_mask = 0; + pr->scr_stat = 0; + pr->scr_ctl = 0; + pr->scr_err = 0; + pr->scr_act = 0; + d->busy_slot = -1; + + ide_state = &s->dev[port].port.ifs[0]; + if (!ide_state->bs) { + return; + } + + /* reset ncq queue */ + for (i = 0; i < AHCI_MAX_CMDS; i++) { + NCQTransferState *ncq_tfs = &s->dev[port].ncq_tfs[i]; + if (!ncq_tfs->used) { + continue; + } + + if (ncq_tfs->aiocb) { + bdrv_aio_cancel(ncq_tfs->aiocb); + ncq_tfs->aiocb = NULL; + } + + qemu_sglist_destroy(&ncq_tfs->sglist); + ncq_tfs->used = 0; + } + + memset(init_fis, 0, sizeof(init_fis)); + s->dev[port].port_state = STATE_RUN; + if (!ide_state->bs) { + s->dev[port].port_regs.sig = 0; + tfd = (1 << 8) | SEEK_STAT | WRERR_STAT; + } else if (ide_state->drive_kind == IDE_CD) { + s->dev[port].port_regs.sig = SATA_SIGNATURE_CDROM; + ide_state->lcyl = 0x14; + ide_state->hcyl = 0xeb; + DPRINTF(port, "set lcyl = %d\n", ide_state->lcyl); + init_fis[5] = ide_state->lcyl; + init_fis[6] = ide_state->hcyl; + ide_state->status = SEEK_STAT | WRERR_STAT | READY_STAT; + } else { + s->dev[port].port_regs.sig = SATA_SIGNATURE_DISK; + ide_state->status = SEEK_STAT | WRERR_STAT; + } + + ide_state->error = 1; + init_fis[4] = 1; + init_fis[12] = 1; + ahci_write_fis_d2h(d, init_fis); +} + +static void debug_print_fis(uint8_t *fis, int cmd_len) +{ +#ifdef DEBUG_AHCI + int i; + + fprintf(stderr, "fis:"); + for (i = 0; i < cmd_len; i++) { + if ((i & 0xf) == 0) { + fprintf(stderr, "\n%02x:",i); + } + fprintf(stderr, "%02x ",fis[i]); + } + fprintf(stderr, "\n"); +#endif +} + +static void ahci_write_fis_sdb(AHCIState *s, int port, uint32_t finished) +{ + AHCIPortRegs *pr = &s->dev[port].port_regs; + IDEState *ide_state; + uint8_t *sdb_fis; + + if (!s->dev[port].res_fis || + !(pr->cmd & PORT_CMD_FIS_RX)) { + return; + } + + sdb_fis = &s->dev[port].res_fis[RES_FIS_SDBFIS]; + ide_state = &s->dev[port].port.ifs[0]; + + /* clear memory */ + *(uint32_t*)sdb_fis = 0; + + /* write values */ + sdb_fis[0] = ide_state->error; + sdb_fis[2] = ide_state->status & 0x77; + s->dev[port].finished |= finished; + *(uint32_t*)(sdb_fis + 4) = cpu_to_le32(s->dev[port].finished); + + ahci_trigger_irq(s, &s->dev[port], PORT_IRQ_STAT_SDBS); +} + +static void ahci_write_fis_d2h(AHCIDevice *ad, uint8_t *cmd_fis) +{ + AHCIPortRegs *pr = &ad->port_regs; + uint8_t *d2h_fis; + int i; + target_phys_addr_t cmd_len = 0x80; + int cmd_mapped = 0; + + if (!ad->res_fis || !(pr->cmd & PORT_CMD_FIS_RX)) { + return; + } + + if (!cmd_fis) { + /* map cmd_fis */ + uint64_t tbl_addr = le64_to_cpu(ad->cur_cmd->tbl_addr); + cmd_fis = cpu_physical_memory_map(tbl_addr, &cmd_len, 0); + cmd_mapped = 1; + } + + d2h_fis = &ad->res_fis[RES_FIS_RFIS]; + + d2h_fis[0] = 0x34; + d2h_fis[1] = (ad->hba->control_regs.irqstatus ? (1 << 6) : 0); + d2h_fis[2] = ad->port.ifs[0].status; + d2h_fis[3] = ad->port.ifs[0].error; + + d2h_fis[4] = cmd_fis[4]; + d2h_fis[5] = cmd_fis[5]; + d2h_fis[6] = cmd_fis[6]; + d2h_fis[7] = cmd_fis[7]; + d2h_fis[8] = cmd_fis[8]; + d2h_fis[9] = cmd_fis[9]; + d2h_fis[10] = cmd_fis[10]; + d2h_fis[11] = cmd_fis[11]; + d2h_fis[12] = cmd_fis[12]; + d2h_fis[13] = cmd_fis[13]; + for (i = 14; i < 0x20; i++) { + d2h_fis[i] = 0; + } + + if (d2h_fis[2] & ERR_STAT) { + ahci_trigger_irq(ad->hba, ad, PORT_IRQ_STAT_TFES); + } + + ahci_trigger_irq(ad->hba, ad, PORT_IRQ_D2H_REG_FIS); + + if (cmd_mapped) { + cpu_physical_memory_unmap(cmd_fis, 0, cmd_len, cmd_len); + } +} + +static int ahci_populate_sglist(AHCIDevice *ad, QEMUSGList *sglist) +{ + AHCICmdHdr *cmd = ad->cur_cmd; + uint32_t opts = le32_to_cpu(cmd->opts); + uint64_t prdt_addr = le64_to_cpu(cmd->tbl_addr) + 0x80; + int sglist_alloc_hint = opts >> AHCI_CMD_HDR_PRDT_LEN; + target_phys_addr_t prdt_len = (sglist_alloc_hint * sizeof(AHCI_SG)); + target_phys_addr_t real_prdt_len = prdt_len; + uint8_t *prdt; + int i; + int r = 0; + + if (!sglist_alloc_hint) { + DPRINTF(ad->port_no, "no sg list given by guest: 0x%08x\n", opts); + return -1; + } + + /* map PRDT */ + if (!(prdt = cpu_physical_memory_map(prdt_addr, &prdt_len, 0))){ + DPRINTF(ad->port_no, "map failed\n"); + return -1; + } + + if (prdt_len < real_prdt_len) { + DPRINTF(ad->port_no, "mapped less than expected\n"); + r = -1; + goto out; + } + + /* Get entries in the PRDT, init a qemu sglist accordingly */ + if (sglist_alloc_hint > 0) { + AHCI_SG *tbl = (AHCI_SG *)prdt; + + qemu_sglist_init(sglist, sglist_alloc_hint); + for (i = 0; i < sglist_alloc_hint; i++) { + /* flags_size is zero-based */ + qemu_sglist_add(sglist, le64_to_cpu(tbl[i].addr), + le32_to_cpu(tbl[i].flags_size) + 1); + } + } + +out: + cpu_physical_memory_unmap(prdt, 0, prdt_len, prdt_len); + return r; +} + +static void ncq_cb(void *opaque, int ret) +{ + NCQTransferState *ncq_tfs = (NCQTransferState *)opaque; + IDEState *ide_state = &ncq_tfs->drive->port.ifs[0]; + + /* Clear bit for this tag in SActive */ + ncq_tfs->drive->port_regs.scr_act &= ~(1 << ncq_tfs->tag); + + if (ret < 0) { + /* error */ + ide_state->error = ABRT_ERR; + ide_state->status = READY_STAT | ERR_STAT; + ncq_tfs->drive->port_regs.scr_err |= (1 << ncq_tfs->tag); + } else { + ide_state->status = READY_STAT | SEEK_STAT; + } + + ahci_write_fis_sdb(ncq_tfs->drive->hba, ncq_tfs->drive->port_no, + (1 << ncq_tfs->tag)); + + DPRINTF(ncq_tfs->drive->port_no, "NCQ transfer tag %d finished\n", + ncq_tfs->tag); + + qemu_sglist_destroy(&ncq_tfs->sglist); + ncq_tfs->used = 0; +} + +static void process_ncq_command(AHCIState *s, int port, uint8_t *cmd_fis, + int slot) +{ + NCQFrame *ncq_fis = (NCQFrame*)cmd_fis; + uint8_t tag = ncq_fis->tag >> 3; + NCQTransferState *ncq_tfs = &s->dev[port].ncq_tfs[tag]; + + if (ncq_tfs->used) { + /* error - already in use */ + fprintf(stderr, "%s: tag %d already used\n", __FUNCTION__, tag); + return; + } + + ncq_tfs->used = 1; + ncq_tfs->drive = &s->dev[port]; + ncq_tfs->slot = slot; + ncq_tfs->lba = ((uint64_t)ncq_fis->lba5 << 40) | + ((uint64_t)ncq_fis->lba4 << 32) | + ((uint64_t)ncq_fis->lba3 << 24) | + ((uint64_t)ncq_fis->lba2 << 16) | + ((uint64_t)ncq_fis->lba1 << 8) | + (uint64_t)ncq_fis->lba0; + + /* Note: We calculate the sector count, but don't currently rely on it. + * The total size of the DMA buffer tells us the transfer size instead. */ + ncq_tfs->sector_count = ((uint16_t)ncq_fis->sector_count_high << 8) | + ncq_fis->sector_count_low; + + DPRINTF(port, "NCQ transfer LBA from %ld to %ld, drive max %ld\n", + ncq_tfs->lba, ncq_tfs->lba + ncq_tfs->sector_count - 2, + s->dev[port].port.ifs[0].nb_sectors - 1); + + ahci_populate_sglist(&s->dev[port], &ncq_tfs->sglist); + ncq_tfs->tag = tag; + + switch(ncq_fis->command) { + case READ_FPDMA_QUEUED: + DPRINTF(port, "NCQ reading %d sectors from LBA %ld, tag %d\n", + ncq_tfs->sector_count-1, ncq_tfs->lba, ncq_tfs->tag); + ncq_tfs->is_read = 1; + + DPRINTF(port, "tag %d aio read %ld\n", ncq_tfs->tag, ncq_tfs->lba); + ncq_tfs->aiocb = dma_bdrv_read(ncq_tfs->drive->port.ifs[0].bs, + &ncq_tfs->sglist, ncq_tfs->lba, + ncq_cb, ncq_tfs); + break; + case WRITE_FPDMA_QUEUED: + DPRINTF(port, "NCQ writing %d sectors to LBA %ld, tag %d\n", + ncq_tfs->sector_count-1, ncq_tfs->lba, ncq_tfs->tag); + ncq_tfs->is_read = 0; + + DPRINTF(port, "tag %d aio write %ld\n", ncq_tfs->tag, ncq_tfs->lba); + ncq_tfs->aiocb = dma_bdrv_write(ncq_tfs->drive->port.ifs[0].bs, + &ncq_tfs->sglist, ncq_tfs->lba, + ncq_cb, ncq_tfs); + break; + default: + DPRINTF(port, "error: tried to process non-NCQ command as NCQ\n"); + qemu_sglist_destroy(&ncq_tfs->sglist); + break; + } +} + +static int handle_cmd(AHCIState *s, int port, int slot) +{ + IDEState *ide_state; + AHCIPortRegs *pr; + uint32_t opts; + uint64_t tbl_addr; + AHCICmdHdr *cmd; + uint8_t *cmd_fis; + target_phys_addr_t cmd_len; + + if (s->dev[port].port.ifs[0].status & (BUSY_STAT|DRQ_STAT)) { + /* Engine currently busy, try again later */ + DPRINTF(port, "engine busy\n"); + return -1; + } + + pr = &s->dev[port].port_regs; + cmd = &((AHCICmdHdr *)s->dev[port].lst)[slot]; + + if (!s->dev[port].lst) { + DPRINTF(port, "error: lst not given but cmd handled"); + return -1; + } + + /* remember current slot handle for later */ + s->dev[port].cur_cmd = cmd; + + opts = le32_to_cpu(cmd->opts); + tbl_addr = le64_to_cpu(cmd->tbl_addr); + + cmd_len = 0x80; + cmd_fis = cpu_physical_memory_map(tbl_addr, &cmd_len, 1); + + if (!cmd_fis) { + DPRINTF(port, "error: guest passed us an invalid cmd fis\n"); + return -1; + } + + /* The device we are working for */ + ide_state = &s->dev[port].port.ifs[0]; + + if (!ide_state->bs) { + DPRINTF(port, "error: guest accessed unused port"); + goto out; + } + + debug_print_fis(cmd_fis, 0x90); + //debug_print_fis(cmd_fis, (opts & AHCI_CMD_HDR_CMD_FIS_LEN) * 4); + + switch (cmd_fis[0]) { + case SATA_FIS_TYPE_REGISTER_H2D: + break; + default: + DPRINTF(port, "unknown command cmd_fis[0]=%02x cmd_fis[1]=%02x " + "cmd_fis[2]=%02x\n", cmd_fis[0], cmd_fis[1], + cmd_fis[2]); + goto out; + break; + } + + switch (cmd_fis[1]) { + case SATA_FIS_REG_H2D_UPDATE_COMMAND_REGISTER: + break; + case 0: + break; + default: + DPRINTF(port, "unknown command cmd_fis[0]=%02x cmd_fis[1]=%02x " + "cmd_fis[2]=%02x\n", cmd_fis[0], cmd_fis[1], + cmd_fis[2]); + goto out; + break; + } + + switch (s->dev[port].port_state) { + case STATE_RUN: + if (cmd_fis[15] & ATA_SRST) { + s->dev[port].port_state = STATE_RESET; + } + break; + case STATE_RESET: + if (!(cmd_fis[15] & ATA_SRST)) { + ahci_reset_port(s, port); + } + break; + } + + if (cmd_fis[1] == SATA_FIS_REG_H2D_UPDATE_COMMAND_REGISTER) { + + /* Check for NCQ command */ + if ((cmd_fis[2] == READ_FPDMA_QUEUED) || + (cmd_fis[2] == WRITE_FPDMA_QUEUED)) { + process_ncq_command(s, port, cmd_fis, slot); + goto out; + } + + /* Decompose the FIS */ + ide_state->nsector = (int64_t)((cmd_fis[13] << 8) | cmd_fis[12]); + ide_state->feature = cmd_fis[3]; + if (!ide_state->nsector) { + ide_state->nsector = 256; + } + + if (ide_state->drive_kind != IDE_CD) { + ide_set_sector(ide_state, (cmd_fis[6] << 16) | (cmd_fis[5] << 8) | + cmd_fis[4]); + } + + /* Copy the ACMD field (ATAPI packet, if any) from the AHCI command + * table to ide_state->io_buffer + */ + if (opts & AHCI_CMD_ATAPI) { + memcpy(ide_state->io_buffer, &cmd_fis[AHCI_COMMAND_TABLE_ACMD], 0x10); + ide_state->lcyl = 0x14; + ide_state->hcyl = 0xeb; + debug_print_fis(ide_state->io_buffer, 0x10); + ide_state->feature = IDE_FEATURE_DMA; + s->dev[port].done_atapi_packet = 0; + /* XXX send PIO setup FIS */ + } + + ide_state->error = 0; + + /* Reset transferred byte counter */ + cmd->status = 0; + + /* We're ready to process the command in FIS byte 2. */ + ide_exec_cmd(&s->dev[port].port, cmd_fis[2]); + + if (s->dev[port].port.ifs[0].status & READY_STAT) { + ahci_write_fis_d2h(&s->dev[port], cmd_fis); + } + } + +out: + cpu_physical_memory_unmap(cmd_fis, 1, cmd_len, cmd_len); + + if (s->dev[port].port.ifs[0].status & (BUSY_STAT|DRQ_STAT)) { + /* async command, complete later */ + s->dev[port].busy_slot = slot; + return -1; + } + + /* done handling the command */ + return 0; +} + +/* DMA dev <-> ram */ +static int ahci_start_transfer(IDEDMA *dma) +{ + AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma); + IDEState *s = &ad->port.ifs[0]; + uint32_t size = (uint32_t)(s->data_end - s->data_ptr); + /* write == ram -> device */ + uint32_t opts = le32_to_cpu(ad->cur_cmd->opts); + int is_write = opts & AHCI_CMD_WRITE; + int is_atapi = opts & AHCI_CMD_ATAPI; + int has_sglist = 0; + + if (is_atapi && !ad->done_atapi_packet) { + /* already prepopulated iobuffer */ + ad->done_atapi_packet = 1; + goto out; + } + + if (!ahci_populate_sglist(ad, &s->sg)) { + has_sglist = 1; + } + + DPRINTF(ad->port_no, "%sing %d bytes on %s w/%s sglist\n", + is_write ? "writ" : "read", size, is_atapi ? "atapi" : "ata", + has_sglist ? "" : "o"); + + if (is_write && has_sglist && (s->data_ptr < s->data_end)) { + read_from_sglist(s->data_ptr, size, &s->sg); + } + + if (!is_write && has_sglist && (s->data_ptr < s->data_end)) { + write_to_sglist(s->data_ptr, size, &s->sg); + } + + /* update number of transferred bytes */ + ad->cur_cmd->status = cpu_to_le32(le32_to_cpu(ad->cur_cmd->status) + size); + +out: + /* declare that we processed everything */ + s->data_ptr = s->data_end; + + if (has_sglist) { + qemu_sglist_destroy(&s->sg); + } + + s->end_transfer_func(s); + + if (!(s->status & DRQ_STAT)) { + /* done with DMA */ + ahci_trigger_irq(ad->hba, ad, PORT_IRQ_STAT_DSS); + } + + return 0; +} + +static void ahci_start_dma(IDEDMA *dma, IDEState *s, + BlockDriverCompletionFunc *dma_cb) +{ + AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma); + + DPRINTF(ad->port_no, "\n"); + ad->dma_cb = dma_cb; + ad->dma_status |= BM_STATUS_DMAING; + dma_cb(s, 0); +} + +static int ahci_dma_prepare_buf(IDEDMA *dma, int is_write) +{ + AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma); + IDEState *s = &ad->port.ifs[0]; + int i; + + ahci_populate_sglist(ad, &s->sg); + + s->io_buffer_size = 0; + for (i = 0; i < s->sg.nsg; i++) { + s->io_buffer_size += s->sg.sg[i].len; + } + + DPRINTF(ad->port_no, "len=%#x\n", s->io_buffer_size); + return s->io_buffer_size != 0; +} + +static int ahci_dma_rw_buf(IDEDMA *dma, int is_write) +{ + AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma); + IDEState *s = &ad->port.ifs[0]; + uint8_t *p = s->io_buffer + s->io_buffer_index; + int l = s->io_buffer_size - s->io_buffer_index; + + if (ahci_populate_sglist(ad, &s->sg)) { + return 0; + } + + if (is_write) { + write_to_sglist(p, l, &s->sg); + } else { + read_from_sglist(p, l, &s->sg); + } + + /* update number of transferred bytes */ + ad->cur_cmd->status = cpu_to_le32(le32_to_cpu(ad->cur_cmd->status) + l); + s->io_buffer_index += l; + + DPRINTF(ad->port_no, "len=%#x\n", l); + + return 1; +} + +static int ahci_dma_set_unit(IDEDMA *dma, int unit) +{ + /* only a single unit per link */ + return 0; +} + +static int ahci_dma_add_status(IDEDMA *dma, int status) +{ + AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma); + ad->dma_status |= status; + DPRINTF(ad->port_no, "set status: %x\n", status); + + if (status & BM_STATUS_INT) { + ahci_trigger_irq(ad->hba, ad, PORT_IRQ_STAT_DSS); + } + + return 0; +} + +static int ahci_dma_set_inactive(IDEDMA *dma) +{ + AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma); + + DPRINTF(ad->port_no, "dma done\n"); + + /* update d2h status */ + ahci_write_fis_d2h(ad, NULL); + + ad->dma_cb = NULL; + + /* maybe we still have something to process, check later */ + ad->check_bh = qemu_bh_new(ahci_check_cmd_bh, ad); + qemu_bh_schedule(ad->check_bh); + + return 0; +} + +static void ahci_irq_set(void *opaque, int n, int level) +{ +} + +static void ahci_dma_restart_cb(void *opaque, int running, int reason) +{ +} + +static int ahci_dma_reset(IDEDMA *dma) +{ + return 0; +} + +static const IDEDMAOps ahci_dma_ops = { + .start_dma = ahci_start_dma, + .start_transfer = ahci_start_transfer, + .prepare_buf = ahci_dma_prepare_buf, + .rw_buf = ahci_dma_rw_buf, + .set_unit = ahci_dma_set_unit, + .add_status = ahci_dma_add_status, + .set_inactive = ahci_dma_set_inactive, + .restart_cb = ahci_dma_restart_cb, + .reset = ahci_dma_reset, +}; + +static void ahci_init(AHCIState *s, DeviceState *qdev) +{ + qemu_irq *irqs; + int i; + + ahci_reg_init(s); + s->mem = cpu_register_io_memory(ahci_readfn, ahci_writefn, s, + DEVICE_LITTLE_ENDIAN); + irqs = qemu_allocate_irqs(ahci_irq_set, s, SATA_PORTS); + + for (i = 0; i < SATA_PORTS; i++) { + AHCIDevice *ad = &s->dev[i]; + + ide_bus_new(&ad->port, qdev, i); + ide_init2(&ad->port, irqs[i]); + + ad->hba = s; + ad->port_no = i; + ad->port.dma = &ad->dma; + ad->port.dma->ops = &ahci_dma_ops; + ad->port_regs.cmd = PORT_CMD_SPIN_UP | PORT_CMD_POWER_ON; + } +} + +static void ahci_pci_map(PCIDevice *pci_dev, int region_num, + pcibus_t addr, pcibus_t size, int type) +{ + struct AHCIPCIState *d = (struct AHCIPCIState *)pci_dev; + AHCIState *s = &d->ahci; + + cpu_register_physical_memory(addr, size, s->mem); +} + +static void ahci_reset(void *opaque) +{ + struct AHCIPCIState *d = opaque; + int i; + + for (i = 0; i < SATA_PORTS; i++) { + ahci_reset_port(&d->ahci, i); + } +} + +static int pci_ahci_init(PCIDevice *dev) +{ + struct AHCIPCIState *d; + d = DO_UPCAST(struct AHCIPCIState, card, dev); + + pci_config_set_vendor_id(d->card.config, PCI_VENDOR_ID_INTEL); + pci_config_set_device_id(d->card.config, PCI_DEVICE_ID_INTEL_82801IR); + + pci_config_set_class(d->card.config, PCI_CLASS_STORAGE_SATA); + pci_config_set_revision(d->card.config, 0x02); + pci_config_set_prog_interface(d->card.config, AHCI_PROGMODE_MAJOR_REV_1); + + d->card.config[PCI_CACHE_LINE_SIZE] = 0x08; /* Cache line size */ + d->card.config[PCI_LATENCY_TIMER] = 0x00; /* Latency timer */ + pci_config_set_interrupt_pin(d->card.config, 1); + + qemu_register_reset(ahci_reset, d); + + /* XXX BAR size should be 1k, but that breaks, so bump it to 4k for now */ + pci_register_bar(&d->card, 5, 0x1000, PCI_BASE_ADDRESS_SPACE_MEMORY, + ahci_pci_map); + + msi_init(dev, 0x50, 1, true, false); + + ahci_init(&d->ahci, &dev->qdev); + d->ahci.irq = d->card.irq[0]; + + return 0; +} + +static int pci_ahci_uninit(PCIDevice *dev) +{ + struct AHCIPCIState *d; + d = DO_UPCAST(struct AHCIPCIState, card, dev); + + if (msi_enabled(dev)) { + msi_uninit(dev); + } + + qemu_unregister_reset(ahci_reset, d); + + return 0; +} + +static void pci_ahci_write_config(PCIDevice *pci, uint32_t addr, + uint32_t val, int len) +{ + pci_default_write_config(pci, addr, val, len); + msi_write_config(pci, addr, val, len); +} + +static PCIDeviceInfo ahci_info = { + .qdev.name = "ahci", + .qdev.size = sizeof(AHCIPCIState), + .init = pci_ahci_init, + .exit = pci_ahci_uninit, + .config_write = pci_ahci_write_config, +}; + +static void ahci_pci_register_devices(void) +{ + pci_qdev_register(&ahci_info); +} + +device_init(ahci_pci_register_devices) |