ref: 42dfac6916ebbdac65cbec8b3e1a80c3ee41423c
dir: /os/boot/pc/ahci.h/
/*
* advanced host controller interface (sata)
* © 2007 coraid, inc
*/
/* ata errors */
enum {
Emed = 1<<0, /* media error */
Enm = 1<<1, /* no media */
Eabrt = 1<<2, /* abort */
Emcr = 1<<3, /* media change request */
Eidnf = 1<<4, /* no user-accessible address */
Emc = 1<<5, /* media change */
Eunc = 1<<6, /* data error */
Ewp = 1<<6, /* write protect */
Eicrc = 1<<7, /* interface crc error */
Efatal = Eidnf|Eicrc, /* must sw reset */
};
/* ata status */
enum {
ASerr = 1<<0, /* error */
ASdrq = 1<<3, /* request */
ASdf = 1<<5, /* fault */
ASdrdy = 1<<6, /* ready */
ASbsy = 1<<7, /* busy */
ASobs = 1<<1|1<<2|1<<4,
};
/* 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 {
Hs64a = 1<<31, /* 64-bit addressing */
Hsncq = 1<<30, /* ncq */
Hssntf = 1<<29, /* snotification reg. */
Hsmps = 1<<28, /* mech pres switch */
Hsss = 1<<27, /* staggered spinup */
Hsalp = 1<<26, /* aggressive link pm */
Hsal = 1<<25, /* activity led */
Hsclo = 1<<24, /* command-list override */
Hiss = 1<<20, /* for interface speed */
// Hsnzo = 1<<19,
Hsam = 1<<18, /* ahci-mode only */
Hspm = 1<<17, /* port multiplier */
// Hfbss = 1<<16,
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. */
Hsxs = 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 */
};
typedef struct {
ulong cap;
ulong ghc;
ulong isr;
ulong pi; /* ports implemented */
ulong ver;
ulong ccc; /* coaleasing control */
ulong cccports;
ulong emloc;
ulong emctl;
} 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 = Atfes|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, /* agressive slumber & partial sleep */
Aalpe = 1<<26, /* agressive link pm enable */
Adlae = 1<<25, /* drive led on atapi */
Aatapi = 1<<24, /* device is atapi */
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,
};
/* ctl register bits */
enum {
Aipm = 1<<8, /* interface power mgmt. 3=off */
Aspd = 1<<4,
Adet = 1<<0, /* device detection */
};
#define sstatus scr0
#define sctl scr2
#define serror scr1
#define sactive scr3
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 ntf;
uchar res2[8];
ulong vendor;
} 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;
enum {
Ferror = 1,
Fdone = 2,
};
enum {
Dllba = 1,
Dsmart = 1<<1,
Dpower = 1<<2,
Dnop = 1<<3,
Datapi = 1<<4,
Datapi16= 1<<5,
};
typedef struct {
// QLock;
// Rendez;
uchar flag;
uchar feat;
uchar smart;
Afis fis;
Alist *list;
Actab *ctab;
} Aportm;
typedef struct {
Aport *p;
Aportm *m;
} Aportc;