ref: e81c54ba2ecc673a4d5f8aed0e9b52841fe07b0d
dir: /os/pc64/ahci.h/
/*
* advanced host controller interface (sata)
* © 2007-9 coraid, inc
*/
/* pci configuration */
enum {
Abar = 5,
};
/*
* ahci memory configuration
*
* 0000-0023 generic host control
* 0024-009f reserved
* 00a0-00ff vendor specific.
* 0100-017f port 0
* ...
* 1080-1100 port 31
*/
/* cap bits: supported features */
enum {
H64a = 1<<31, /* 64-bit addressing */
Hncq = 1<<30, /* ncq */
Hsntf = 1<<29, /* snotification reg. */
Hmps = 1<<28, /* mech pres switch */
Hss = 1<<27, /* staggered spinup */
Halp = 1<<26, /* aggressive link pm */
Hal = 1<<25, /* activity led */
Hclo = 1<<24, /* command-list override */
Hiss = 1<<20, /* for interface speed */
Ham = 1<<18, /* ahci-mode only */
Hpm = 1<<17, /* port multiplier */
Hfbs = 1<<16, /* fis-based switching */
Hpmb = 1<<15, /* multiple-block pio */
Hssc = 1<<14, /* slumber state */
Hpsc = 1<<13, /* partial-slumber state */
Hncs = 1<<8, /* n command slots */
Hcccs = 1<<7, /* coal */
Hems = 1<<6, /* enclosure mgmt. */
Hxs = 1<<5, /* external sata */
Hnp = 1<<0, /* n ports */
};
/* ghc bits */
enum {
Hae = 1<<31, /* enable ahci */
Hie = 1<<1, /* " interrupts */
Hhr = 1<<0, /* hba reset */
};
/* cap2 bits */
enum {
Apts = 1<<2, /* automatic partial to slumber */
Nvmp = 1<<1, /* nvmhci present; nvram */
Boh = 1<<0, /* bios/os handoff supported */
};
/* bios bits */
enum {
Bos = 1<<0,
Oos = 1<<1,
};
/* emctl bits */
enum {
Pm = 1<<27, /* port multiplier support */
Alhd = 1<<26, /* activity led hardware driven */
Xonly = 1<<25, /* rx messages not supported */
Smb = 1<<24, /* single msg buffer; rx limited */
Esgpio = 1<<19, /* sgpio messages supported */
Eses2 = 1<<18, /* ses-2 supported */
Esafte = 1<<17, /* saf-te supported */
Elmt = 1<<16, /* led msg types support */
Emrst = 1<<9, /* reset all em logic */
Tmsg = 1<<8, /* transmit message */
Mr = 1<<0, /* message rx'd */
Emtype = Esgpio | Eses2 | Esafte | Elmt,
};
typedef struct {
ulong cap;
ulong ghc;
ulong isr;
ulong pi; /* ports implemented */
ulong ver;
ulong ccc; /* coaleasing control */
ulong cccports;
ulong emloc;
ulong emctl;
ulong cap2;
ulong bios;
} Ahba;
enum {
Acpds = 1<<31, /* cold port detect status */
Atfes = 1<<30, /* task file error status */
Ahbfs = 1<<29, /* hba fatal */
Ahbds = 1<<28, /* hba error (parity error) */
Aifs = 1<<27, /* interface fatal §6.1.2 */
Ainfs = 1<<26, /* interface error (recovered) */
Aofs = 1<<24, /* too many bytes from disk */
Aipms = 1<<23, /* incorrect prt mul status */
Aprcs = 1<<22, /* PhyRdy change status Pxserr.diag.n */
Adpms = 1<<7, /* mechanical presence status */
Apcs = 1<<6, /* port connect diag.x */
Adps = 1<<5, /* descriptor processed */
Aufs = 1<<4, /* unknown fis diag.f */
Asdbs = 1<<3, /* set device bits fis received w/ i bit set */
Adss = 1<<2, /* dma setup */
Apio = 1<<1, /* pio setup fis */
Adhrs = 1<<0, /* device to host register fis */
IEM = Acpds|Atfes|Ahbds|Ahbfs|Ahbds|Aifs|Ainfs|Aprcs|Apcs|Adps|
Aufs|Asdbs|Adss|Adhrs,
Ifatal = Ahbfs|Ahbds|Aifs,
};
/* serror bits */
enum {
SerrX = 1<<26, /* exchanged */
SerrF = 1<<25, /* unknown fis */
SerrT = 1<<24, /* transition error */
SerrS = 1<<23, /* link sequence */
SerrH = 1<<22, /* handshake */
SerrC = 1<<21, /* crc */
SerrD = 1<<20, /* not used by ahci */
SerrB = 1<<19, /* 10-tp-8 decode */
SerrW = 1<<18, /* comm wake */
SerrI = 1<<17, /* phy internal */
SerrN = 1<<16, /* phyrdy change */
ErrE = 1<<11, /* internal */
ErrP = 1<<10, /* ata protocol violation */
ErrC = 1<<9, /* communication */
ErrT = 1<<8, /* transient */
ErrM = 1<<1, /* recoverd comm */
ErrI = 1<<0, /* recovered data integrety */
ErrAll = ErrE|ErrP|ErrC|ErrT|ErrM|ErrI,
SerrAll = SerrX|SerrF|SerrT|SerrS|SerrH|SerrC|SerrD|SerrB|SerrW|
SerrI|SerrN|ErrAll,
SerrBad = 0x7f<<19,
};
/* cmd register bits */
enum {
Aicc = 1<<28, /* interface communcations control. 4 bits */
Aasp = 1<<27, /* aggressive slumber & partial sleep */
Aalpe = 1<<26, /* aggressive link pm enable */
Adlae = 1<<25, /* drive led on atapi */
Aatapi = 1<<24, /* device is atapi */
Apste = 1<<23, /* automatic slumber to partial cap */
Afbsc = 1<<22, /* fis-based switching capable */
Aesp = 1<<21, /* external sata port */
Acpd = 1<<20, /* cold presence detect */
Ampsp = 1<<19, /* mechanical pres. */
Ahpcp = 1<<18, /* hot plug capable */
Apma = 1<<17, /* pm attached */
Acps = 1<<16, /* cold presence state */
Acr = 1<<15, /* cmdlist running */
Afr = 1<<14, /* fis running */
Ampss = 1<<13, /* mechanical presence switch state */
Accs = 1<<8, /* current command slot 12:08 */
Afre = 1<<4, /* fis enable receive */
Aclo = 1<<3, /* command list override */
Apod = 1<<2, /* power on dev (requires cold-pres. detect) */
Asud = 1<<1, /* spin-up device; requires ss capability */
Ast = 1<<0, /* start */
Arun = Ast|Acr|Afre|Afr,
Apwr = Apod|Asud,
};
/* ctl register bits */
enum {
Aipm = 1<<8, /* interface power mgmt. 3=off */
Aspd = 1<<4,
Adet = 1<<0, /* device detection */
};
/* sstatus register bits */
enum{
/* sstatus det */
Smissing = 0<<0,
Spresent = 1<<0,
Sphylink = 3<<0,
Sbist = 4<<0,
Smask = 7<<0,
/* sstatus speed */
Gmissing = 0<<4,
Gi = 1<<4,
Gii = 2<<4,
Giii = 3<<4,
Gmask = 7<<4,
/* sstatus ipm */
Imissing = 0<<8,
Iactive = 1<<8,
Isleepy = 2<<8,
Islumber = 6<<8,
Imask = 7<<8,
SImask = Smask | Imask,
SSmask = Smask | Isleepy,
};
#define sstatus scr0
#define sctl scr2
#define serror scr1
#define sactive scr3
#define ntf scr4
typedef struct {
ulong list; /* PxCLB must be 1kb aligned */
ulong listhi;
ulong fis; /* 256-byte aligned */
ulong fishi;
ulong isr;
ulong ie; /* interrupt enable */
ulong cmd;
ulong res1;
ulong task;
ulong sig;
ulong scr0;
ulong scr2;
ulong scr1;
ulong scr3;
ulong ci; /* command issue */
ulong scr4;
ulong fbs;
ulong res2[11];
ulong vendor[4];
} Aport;
/* in host's memory; not memory mapped */
typedef struct {
uchar *base;
uchar *d;
uchar *p;
uchar *r;
uchar *u;
ulong *devicebits;
} Afis;
enum {
Lprdtl = 1<<16, /* physical region descriptor table len */
Lpmp = 1<<12, /* port multiplier port */
Lclear = 1<<10, /* clear busy on R_OK */
Lbist = 1<<9,
Lreset = 1<<8,
Lpref = 1<<7, /* prefetchable */
Lwrite = 1<<6,
Latapi = 1<<5,
Lcfl = 1<<0, /* command fis length in double words */
};
/* in hosts memory; memory mapped */
typedef struct {
ulong flags;
ulong len;
ulong ctab;
ulong ctabhi;
uchar reserved[16];
} Alist;
typedef struct {
ulong dba;
ulong dbahi;
ulong pad;
ulong count;
} Aprdt;
typedef struct {
uchar cfis[0x40];
uchar atapi[0x10];
uchar pad[0x30];
Aprdt prdt;
} Actab;
/* enclosure message header */
enum {
Mled = 0,
Msafte = 1,
Mses2 = 2,
Msgpio = 3,
};
typedef struct {
uchar dummy;
uchar msize;
uchar dsize;
uchar type;
uchar hba; /* bits 0:4 are the port */
uchar pm;
uchar led[2];
} Aledmsg;
enum {
Aled = 1<<0,
Locled = 1<<3,
Errled = 1<<6,
Ledoff = 0,
Ledon = 1,
};
typedef struct {
uint encsz;
ulong *enctx;
ulong *encrx;
} Aenc;
enum {
Ferror = 1,
Fdone = 2,
};
typedef struct {
QLock;
Rendez;
uchar flag;
Sfis;
Afis fis;
Alist *list;
Actab *ctab;
} Aportm;
typedef struct {
Aport *p;
Aportm *m;
} Aportc;