3249 lines
70 KiB
C
3249 lines
70 KiB
C
/*
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* USB Enhanced Host Controller Interface (EHCI) driver
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* High speed USB 2.0.
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*
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* Note that all of our unlock routines call coherence.
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*
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* BUGS:
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* - Too many delays and ilocks.
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* - bandwidth admission control must be done per-frame.
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* - requires polling (some controllers miss interrupts).
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* - must warn of power overruns.
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*/
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#include "u.h"
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#include "../port/lib.h"
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#include "mem.h"
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#include "dat.h"
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#include "fns.h"
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#include "io.h"
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#include "../port/error.h"
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#include "../port/usb.h"
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#include "usbehci.h"
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#include "uncached.h"
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#define diprint if(ehcidebug || iso->debug)print
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#define ddiprint if(ehcidebug>1 || iso->debug>1)print
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#define dqprint if(ehcidebug || (qh->io && qh->io->debug))print
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#define ddqprint if(ehcidebug>1 || (qh->io && qh->io->debug>1))print
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#define TRUNC(x, sz) ((x) & ((sz)-1))
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#define LPTR(q) ((ulong*)KADDR((q) & ~0x1F))
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typedef struct Ctlio Ctlio;
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typedef union Ed Ed;
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typedef struct Edpool Edpool;
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typedef struct Itd Itd;
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typedef struct Qio Qio;
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typedef struct Qtd Qtd;
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typedef struct Sitd Sitd;
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typedef struct Td Td;
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/*
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* EHCI interface registers and bits
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*/
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enum
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{
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/* Queue states (software) */
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Qidle = 0,
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Qinstall,
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Qrun,
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Qdone,
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Qclose,
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Qfree,
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Enabledelay = 100, /* waiting for a port to enable */
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Abortdelay = 5, /* delay after cancelling Tds (ms) */
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Incr = 64, /* for pools of Tds, Qhs, etc. */
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Align = 128, /* in bytes for all those descriptors */
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/* Keep them as a power of 2, lower than ctlr->nframes */
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/* Also, keep Nisoframes >= Nintrleafs */
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Nintrleafs = 32, /* nb. of leaf frames in intr. tree */
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Nisoframes = 64, /* nb. of iso frames (in window) */
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/*
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* HW constants
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*/
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/* Itd bits (csw[]) */
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Itdactive = 0x80000000, /* execution enabled */
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Itddberr = 0x40000000, /* data buffer error */
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Itdbabble = 0x20000000, /* babble error */
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Itdtrerr = 0x10000000, /* transaction error */
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Itdlenshift = 16, /* transaction length */
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Itdlenmask = 0xFFF,
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Itdioc = 0x00008000, /* interrupt on complete */
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Itdpgshift = 12, /* page select field */
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Itdoffshift = 0, /* transaction offset */
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/* Itd bits, buffer[] */
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Itdepshift = 8, /* endpoint address (buffer[0]) */
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Itddevshift = 0, /* device address (buffer[0]) */
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Itdin = 0x800, /* is input (buffer[1]) */
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Itdout = 0,
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Itdmaxpktshift = 0, /* max packet (buffer[1]) */
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Itdntdsshift = 0, /* nb. of tds per µframe (buffer[2]) */
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Itderrors = Itddberr|Itdbabble|Itdtrerr,
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/* Sitd bits (epc) */
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Stdin = 0x80000000, /* input direction */
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Stdportshift = 24, /* hub port number */
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Stdhubshift = 16, /* hub address */
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Stdepshift = 8, /* endpoint address */
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Stddevshift = 0, /* device address */
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/* Sitd bits (mfs) */
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Stdssmshift = 0, /* split start mask */
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Stdscmshift = 8, /* split complete mask */
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/* Sitd bits (csw) */
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Stdioc = 0x80000000, /* interrupt on complete */
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Stdpg = 0x40000000, /* page select */
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Stdlenshift = 16, /* total bytes to transfer */
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Stdlenmask = 0x3FF,
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Stdactive = 0x00000080, /* active */
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Stderr = 0x00000040, /* tr. translator error */
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Stddberr = 0x00000020, /* data buffer error */
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Stdbabble = 0x00000010, /* babble error */
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Stdtrerr = 0x00000008, /* transaction error */
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Stdmmf = 0x00000004, /* missed µframe */
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Stddcs = 0x00000002, /* do complete split */
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Stderrors = Stderr|Stddberr|Stdbabble|Stdtrerr|Stdmmf,
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/* Sitd bits buffer[1] */
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Stdtpall = 0x00000000, /* all payload here (188 bytes) */
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Stdtpbegin = 0x00000008, /* first payload for fs trans. */
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Stdtcntmask = 0x00000007, /* T-count */
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/* Td bits (csw) */
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Tddata1 = 0x80000000, /* data toggle 1 */
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Tddata0 = 0x00000000, /* data toggle 0 */
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Tdlenshift = 16, /* total bytes to transfer */
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Tdlenmask = 0x7FFF,
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Tdmaxpkt = 0x5000, /* max buffer for a Td */
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Tdioc = 0x00008000, /* interrupt on complete */
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Tdpgshift = 12, /* current page */
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Tdpgmask = 7,
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Tderr1 = 0x00000400, /* bit 0 of error counter */
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Tderr2 = 0x00000800, /* bit 1 of error counter */
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Tdtokout = 0x00000000, /* direction out */
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Tdtokin = 0x00000100, /* direction in */
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Tdtoksetup = 0x00000200, /* setup packet */
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Tdtok = 0x00000300, /* token bits */
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Tdactive = 0x00000080, /* active */
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Tdhalt = 0x00000040, /* halted */
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Tddberr = 0x00000020, /* data buffer error */
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Tdbabble = 0x00000010, /* babble error */
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Tdtrerr = 0x00000008, /* transaction error */
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Tdmmf = 0x00000004, /* missed µframe */
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Tddcs = 0x00000002, /* do complete split */
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Tdping = 0x00000001, /* do ping */
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Tderrors = Tdhalt|Tddberr|Tdbabble|Tdtrerr|Tdmmf,
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/* Qh bits (eps0) */
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Qhrlcmask = 0xF, /* nak reload count */
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Qhrlcshift = 28, /* nak reload count */
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Qhnhctl = 0x08000000, /* not-high speed ctl */
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Qhmplmask = 0x7FF, /* max packet */
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Qhmplshift = 16,
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Qhhrl = 0x00008000, /* head of reclamation list */
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Qhdtc = 0x00004000, /* data toggle ctl. */
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Qhint = 0x00000080, /* inactivate on next transition */
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Qhspeedmask = 0x00003000, /* speed bits */
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Qhfull = 0x00000000, /* full speed */
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Qhlow = 0x00001000, /* low speed */
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Qhhigh = 0x00002000, /* high speed */
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/* Qh bits (eps1) */
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Qhmultshift = 30, /* multiple tds per µframe */
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Qhmultmask = 3,
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Qhportshift = 23, /* hub port number */
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Qhhubshift = 16, /* hub address */
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Qhscmshift = 8, /* split completion mask bits */
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Qhismshift = 0, /* interrupt sched. mask bits */
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};
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/*
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* Endpoint tree (software)
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*/
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struct Qtree
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{
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int nel;
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int depth;
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ulong* bw;
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Qh** root;
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};
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/*
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* One per endpoint per direction, to control I/O.
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*/
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struct Qio
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{
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QLock; /* for the entire I/O process */
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Rendez; /* wait for completion */
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Qh* qh; /* Td list (field const after init) */
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int usbid; /* usb address for endpoint/device */
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int toggle; /* Tddata0/Tddata1 */
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int tok; /* Tdtoksetup, Tdtokin, Tdtokout */
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ulong iotime; /* last I/O time; to hold interrupt polls */
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int debug; /* debug flag from the endpoint */
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char* err; /* error string */
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char* tag; /* debug (no room in Qh for this) */
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ulong bw;
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};
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struct Ctlio
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{
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Qio; /* a single Qio for each RPC */
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uchar* data; /* read from last ctl req. */
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int ndata; /* number of bytes read */
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};
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struct Isoio
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{
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QLock;
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Rendez; /* wait for space/completion/errors */
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int usbid; /* address used for device/endpoint */
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int tok; /* Tdtokin or Tdtokout */
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int state; /* Qrun -> Qdone -> Qrun... -> Qclose */
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int nframes; /* number of frames ([S]Itds) used */
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uchar* data; /* iso data buffers if not embedded */
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char* err; /* error string */
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int nerrs; /* nb of consecutive I/O errors */
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ulong maxsize; /* ntds * ep->maxpkt */
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long nleft; /* number of bytes left from last write */
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int debug; /* debug flag from the endpoint */
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int delay; /* max number of bytes to buffer */
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int hs; /* is high speed? */
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Isoio* next; /* in list of active Isoios */
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ulong td0frno; /* first frame used in ctlr */
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union{
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Itd* tdi; /* next td processed by interrupt */
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Sitd* stdi;
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};
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union{
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Itd* tdu; /* next td for user I/O in tdps */
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Sitd* stdu;
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};
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union{
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Itd** itdps; /* itdps[i]: ptr to Itd for i-th frame or nil */
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Sitd** sitdps; /* sitdps[i]: ptr to Sitd for i-th frame or nil */
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ulong** tdps; /* same thing, as seen by hw */
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};
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};
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struct Edpool
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{
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Lock;
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Ed* free;
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int nalloc;
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int ninuse;
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int nfree;
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};
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/*
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* We use the 64-bit version for Itd, Sitd, Td, and Qh.
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* If the ehci is 64-bit capable it assumes we are using those
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* structures even when the system is 32 bits.
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*/
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/*
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* Iso transfer descriptor. hw: 92 bytes, 108 bytes total
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* aligned to 32.
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*/
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struct Itd
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{
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ulong link; /* to next hw struct */
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ulong csw[8]; /* sts/length/pg/off. updated by hw */
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ulong buffer[7]; /* buffer pointers, addrs, maxsz */
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ulong xbuffer[7]; /* high 32 bits of buffer for 64-bits */
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ulong _pad0; /* pad to next cache line */
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/* cache-line boundary here */
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/* software */
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Itd* next;
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ulong ndata; /* number of bytes in data */
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ulong mdata; /* max number of bytes in data */
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uchar* data;
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};
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/*
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* Split transaction iso transfer descriptor.
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* hw: 36 bytes, 52 bytes total. aligned to 32.
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*/
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struct Sitd
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{
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ulong link; /* to next hw struct */
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ulong epc; /* static endpoint state. addrs */
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ulong mfs; /* static endpoint state. µ-frame sched. */
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ulong csw; /* transfer state. updated by hw */
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ulong buffer[2]; /* buf. ptr/offset. offset updated by hw */
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/* buf ptr/TP/Tcnt. TP/Tcnt updated by hw */
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ulong blink; /* back pointer */
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/* cache-line boundary after xbuffer[0] */
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ulong xbuffer[2]; /* high 32 bits of buffer for 64-bits */
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/* software */
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Sitd* next;
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ulong ndata; /* number of bytes in data */
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ulong mdata; /* max number of bytes in data */
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uchar* data;
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};
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/*
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* Queue element transfer descriptor.
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* hw: first 52 bytes, total 68+sbuff bytes. aligned to 32 bytes.
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*/
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struct Td
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{
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ulong nlink; /* to next Td */
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ulong alink; /* alternate link to next Td */
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ulong csw; /* cmd/sts. updated by hw */
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ulong buffer[5]; /* buf ptrs. offset updated by hw */
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/* cache-line boundary here */
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ulong xbuffer[5]; /* high 32 bits of buffer for 64-bits */
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/* software */
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Td* next; /* in qh or Isoio or free list */
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ulong ndata; /* bytes available/used at data */
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uchar* data; /* pointer to actual data */
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uchar* buff; /* allocated data buffer or nil */
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uchar sbuff[1]; /* first byte of embedded buffer */
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};
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/*
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* Queue head. Aligned to 32 bytes.
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* hw: first 68 bytes, 92 total.
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*/
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struct Qh
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{
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ulong link; /* to next Qh in round robin */
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ulong eps0; /* static endpoint state. addrs */
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ulong eps1; /* static endpoint state. µ-frame sched. */
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/* updated by hw */
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ulong tclink; /* current Td (No Term bit here!) */
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ulong nlink; /* to next Td */
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ulong alink; /* alternate link to next Td */
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ulong csw; /* cmd/sts. updated by hw */
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/* cache-line boundary after buffer[0] */
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ulong buffer[5]; /* buf ptrs. offset updated by hw */
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ulong xbuffer[5]; /* high 32 bits of buffer for 64-bits */
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/* software */
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Qh* next; /* in controller list/tree of Qhs */
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int state; /* Qidle -> Qinstall -> Qrun -> Qdone | Qclose */
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Qio* io; /* for this queue */
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Td* tds; /* for this queue */
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int sched; /* slot for for intr. Qhs */
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Qh* inext; /* next in list of intr. qhs */
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};
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/*
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* We can avoid frame span traversal nodes if we don't span frames.
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* Just schedule transfers that can fit on the current frame and
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* wait a little bit otherwise.
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*/
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/*
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* Software. Ehci descriptors provided by pool.
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* There are soo few because we avoid using Fstn.
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*/
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union Ed
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{
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Ed* next; /* in free list */
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Qh qh;
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Td td;
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Itd itd;
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Sitd sitd;
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uchar align[Align];
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};
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int ehcidebug;
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static Edpool edpool;
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static char Ebug[] = "not yet implemented";
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static char* qhsname[] = { "idle", "install", "run", "done", "close", "FREE" };
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Ecapio* ehcidebugcapio;
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int ehcidebugport;
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void
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ehcirun(Ctlr *ctlr, int on)
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{
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int i;
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Eopio *opio;
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ddprint("ehci %#p %s\n", ctlr->capio, on ? "starting" : "halting");
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opio = ctlr->opio;
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if(on)
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opio->cmd |= Crun;
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else
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opio->cmd = Cstop;
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coherence();
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for(i = 0; i < 100; i++)
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if(on == 0 && (opio->sts & Shalted) != 0)
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break;
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else if(on != 0 && (opio->sts & Shalted) == 0)
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break;
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else
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delay(1);
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if(i == 100)
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print("ehci %#p %s cmd timed out\n",
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ctlr->capio, on ? "run" : "halt");
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ddprint("ehci %#p cmd %#lux sts %#lux\n",
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ctlr->capio, opio->cmd, opio->sts);
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}
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static void*
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edalloc(void)
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{
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Ed *ed, *pool;
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int i;
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lock(&edpool);
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if(edpool.free == nil){
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pool = xspanalloc(Incr*sizeof(Ed), Align, 0);
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if(pool == nil)
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panic("edalloc");
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for(i=Incr; --i>=0;){
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pool[i].next = edpool.free;
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edpool.free = &pool[i];
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}
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edpool.nalloc += Incr;
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edpool.nfree += Incr;
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dprint("ehci: edalloc: %d eds\n", edpool.nalloc);
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}
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ed = edpool.free;
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edpool.free = ed->next;
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edpool.ninuse++;
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edpool.nfree--;
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unlock(&edpool);
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memset(ed, 0, sizeof(Ed)); /* safety */
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assert(((ulong)ed & 0xF) == 0);
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return ed;
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}
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static void
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edfree(void *a)
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{
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Ed *ed;
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ed = a;
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lock(&edpool);
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ed->next = edpool.free;
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edpool.free = ed;
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edpool.ninuse--;
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edpool.nfree++;
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unlock(&edpool);
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}
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/*
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* Allocate and do some initialization.
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* Free after releasing buffers used.
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*/
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static Itd*
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itdalloc(void)
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{
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Itd *td;
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td = edalloc();
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td->link = Lterm;
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return td;
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}
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static void
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itdfree(Itd *td)
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{
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edfree(td);
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}
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static Sitd*
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sitdalloc(void)
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{
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Sitd *td;
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td = edalloc();
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td->link = td->blink = Lterm;
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return td;
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}
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static void
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sitdfree(Sitd *td)
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{
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edfree(td);
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}
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static Td*
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tdalloc(void)
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{
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Td *td;
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td = edalloc();
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td->nlink = td->alink = Lterm;
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return td;
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}
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static void
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tdfree(Td *td)
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{
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if(td == nil)
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return;
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free(td->buff);
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edfree(td);
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}
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static void
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tdlinktd(Td *td, Td *next)
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{
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td->next = next;
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td->alink = Lterm;
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if(next == nil)
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td->nlink = Lterm;
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else
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td->nlink = PADDR(next);
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coherence();
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}
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|
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static Qh*
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qhlinkqh(Qh *qh, Qh *next)
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{
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qh->next = next;
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qh->link = PADDR(next)|Lqh;
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coherence();
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return qh;
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}
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|
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static void
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qhsetaddr(Qh *qh, ulong addr)
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{
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ulong eps0;
|
|
|
|
eps0 = qh->eps0 & ~((Epmax<<8)|Devmax);
|
|
qh->eps0 = eps0 | addr & Devmax | ((addr >> 7) & Epmax) << 8;
|
|
coherence();
|
|
}
|
|
|
|
/*
|
|
* return smallest power of 2 <= n
|
|
*/
|
|
static int
|
|
flog2lower(int n)
|
|
{
|
|
int i;
|
|
|
|
for(i = 0; (1 << (i + 1)) <= n; i++)
|
|
;
|
|
return i;
|
|
}
|
|
|
|
static int
|
|
pickschedq(Qtree *qt, int pollival, ulong bw, ulong limit)
|
|
{
|
|
int i, j, d, upperb, q;
|
|
ulong best, worst, total;
|
|
|
|
d = flog2lower(pollival);
|
|
if(d > qt->depth)
|
|
d = qt->depth;
|
|
q = -1;
|
|
worst = 0;
|
|
best = ~0;
|
|
upperb = (1 << (d+1)) - 1;
|
|
for(i = (1 << d) - 1; i < upperb; i++){
|
|
total = qt->bw[0];
|
|
for(j = i; j > 0; j = (j - 1) / 2)
|
|
total += qt->bw[j];
|
|
if(total < best){
|
|
best = total;
|
|
q = i;
|
|
}
|
|
if(total > worst)
|
|
worst = total;
|
|
}
|
|
if(worst + bw >= limit)
|
|
return -1;
|
|
return q;
|
|
}
|
|
|
|
static int
|
|
schedq(Ctlr *ctlr, Qh *qh, int pollival)
|
|
{
|
|
int q;
|
|
Qh *tqh;
|
|
ulong bw;
|
|
|
|
bw = qh->io->bw;
|
|
q = pickschedq(ctlr->tree, pollival, 0, ~0);
|
|
ddqprint("ehci: sched %#p q %d, ival %d, bw %uld\n",
|
|
qh->io, q, pollival, bw);
|
|
if(q < 0){
|
|
print("ehci: no room for ed\n");
|
|
return -1;
|
|
}
|
|
ctlr->tree->bw[q] += bw;
|
|
tqh = ctlr->tree->root[q];
|
|
qh->sched = q;
|
|
qhlinkqh(qh, tqh->next);
|
|
qhlinkqh(tqh, qh);
|
|
coherence();
|
|
qh->inext = ctlr->intrqhs;
|
|
ctlr->intrqhs = qh;
|
|
coherence();
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
unschedq(Ctlr *ctlr, Qh *qh)
|
|
{
|
|
int q;
|
|
Qh *prev, *this, *next;
|
|
Qh **l;
|
|
ulong bw;
|
|
|
|
bw = qh->io->bw;
|
|
q = qh->sched;
|
|
if(q < 0)
|
|
return;
|
|
ctlr->tree->bw[q] -= bw;
|
|
|
|
prev = ctlr->tree->root[q];
|
|
this = prev->next;
|
|
while(this != nil && this != qh){
|
|
prev = this;
|
|
this = this->next;
|
|
}
|
|
if(this == nil)
|
|
print("ehci: unschedq %d: not found\n", q);
|
|
else{
|
|
next = this->next;
|
|
qhlinkqh(prev, next);
|
|
}
|
|
for(l = &ctlr->intrqhs; *l != nil; l = &(*l)->inext)
|
|
if(*l == qh){
|
|
*l = (*l)->inext;
|
|
return;
|
|
}
|
|
print("ehci: unschedq: qh %#p not found\n", qh);
|
|
}
|
|
|
|
static ulong
|
|
qhmaxpkt(Qh *qh)
|
|
{
|
|
return (qh->eps0 >> Qhmplshift) & Qhmplmask;
|
|
}
|
|
|
|
static void
|
|
qhsetmaxpkt(Qh *qh, int maxpkt)
|
|
{
|
|
ulong eps0;
|
|
|
|
eps0 = qh->eps0 & ~(Qhmplmask << Qhmplshift);
|
|
qh->eps0 = eps0 | (maxpkt & Qhmplmask) << Qhmplshift;
|
|
coherence();
|
|
}
|
|
|
|
/*
|
|
* Initialize the round-robin circular list of ctl/bulk Qhs
|
|
* if ep is nil. Otherwise, allocate and link a new Qh in the ctlr.
|
|
*/
|
|
static Qh*
|
|
qhalloc(Ctlr *ctlr, Ep *ep, Qio *io, char* tag)
|
|
{
|
|
Qh *qh;
|
|
int ttype;
|
|
|
|
qh = edalloc();
|
|
qh->nlink = Lterm;
|
|
qh->alink = Lterm;
|
|
qh->csw = Tdhalt;
|
|
qh->state = Qidle;
|
|
qh->sched = -1;
|
|
qh->io = io;
|
|
if(ep != nil){
|
|
qh->eps0 = 0;
|
|
qhsetmaxpkt(qh, ep->maxpkt);
|
|
if(ep->dev->speed == Lowspeed)
|
|
qh->eps0 |= Qhlow;
|
|
if(ep->dev->speed == Highspeed)
|
|
qh->eps0 |= Qhhigh;
|
|
else if(ep->ttype == Tctl)
|
|
qh->eps0 |= Qhnhctl;
|
|
qh->eps0 |= Qhdtc | 8 << Qhrlcshift; /* 8 naks max */
|
|
coherence();
|
|
qhsetaddr(qh, io->usbid);
|
|
qh->eps1 = (ep->ntds & Qhmultmask) << Qhmultshift;
|
|
qh->eps1 |= ep->dev->port << Qhportshift;
|
|
qh->eps1 |= ep->dev->hub << Qhhubshift;
|
|
qh->eps1 |= 034 << Qhscmshift;
|
|
if(ep->ttype == Tintr)
|
|
qh->eps1 |= 1 << Qhismshift; /* intr. start µf. */
|
|
coherence();
|
|
if(io != nil)
|
|
io->tag = tag;
|
|
}
|
|
ilock(ctlr);
|
|
ttype = Tctl;
|
|
if(ep != nil)
|
|
ttype = ep->ttype;
|
|
switch(ttype){
|
|
case Tctl:
|
|
case Tbulk:
|
|
if(ctlr->qhs == nil){
|
|
ctlr->qhs = qhlinkqh(qh, qh);
|
|
qh->eps0 |= Qhhigh | Qhhrl;
|
|
coherence();
|
|
ctlr->opio->link = PADDR(qh)|Lqh;
|
|
coherence();
|
|
}else{
|
|
qhlinkqh(qh, ctlr->qhs->next);
|
|
qhlinkqh(ctlr->qhs, qh);
|
|
}
|
|
break;
|
|
case Tintr:
|
|
schedq(ctlr, qh, ep->pollival);
|
|
break;
|
|
default:
|
|
print("ehci: qhalloc called for ttype != ctl/bulk\n");
|
|
}
|
|
iunlock(ctlr);
|
|
return qh;
|
|
}
|
|
|
|
static int
|
|
qhadvanced(void *a)
|
|
{
|
|
Ctlr *ctlr;
|
|
|
|
ctlr = a;
|
|
return (ctlr->opio->cmd & Ciasync) == 0;
|
|
}
|
|
|
|
/*
|
|
* called when a qh is removed, to be sure the hw is not
|
|
* keeping pointers into it.
|
|
*/
|
|
static void
|
|
qhcoherency(Ctlr *ctlr)
|
|
{
|
|
int i;
|
|
|
|
qlock(&ctlr->portlck);
|
|
ctlr->opio->cmd |= Ciasync; /* ask for intr. on async advance */
|
|
coherence();
|
|
for(i = 0; i < 3 && qhadvanced(ctlr) == 0; i++)
|
|
if(!waserror()){
|
|
tsleep(ctlr, qhadvanced, ctlr, Abortdelay);
|
|
poperror();
|
|
}
|
|
dprint("ehci: qhcoherency: doorbell %d\n", qhadvanced(ctlr));
|
|
if(i == 3)
|
|
print("ehci: async advance doorbell did not ring\n");
|
|
ctlr->opio->cmd &= ~Ciasync; /* try to clean */
|
|
qunlock(&ctlr->portlck);
|
|
}
|
|
|
|
static void
|
|
qhfree(Ctlr *ctlr, Qh *qh)
|
|
{
|
|
Td *td, *ltd;
|
|
Qh *q;
|
|
|
|
if(qh == nil)
|
|
return;
|
|
ilock(ctlr);
|
|
if(qh->sched < 0){
|
|
for(q = ctlr->qhs; q != nil; q = q->next)
|
|
if(q->next == qh)
|
|
break;
|
|
if(q == nil)
|
|
panic("qhfree: nil q");
|
|
q->next = qh->next;
|
|
q->link = qh->link;
|
|
coherence();
|
|
}else
|
|
unschedq(ctlr, qh);
|
|
iunlock(ctlr);
|
|
|
|
qhcoherency(ctlr);
|
|
|
|
for(td = qh->tds; td != nil; td = ltd){
|
|
ltd = td->next;
|
|
tdfree(td);
|
|
}
|
|
|
|
edfree(qh);
|
|
}
|
|
|
|
static void
|
|
qhlinktd(Qh *qh, Td *td)
|
|
{
|
|
ulong csw;
|
|
int i;
|
|
|
|
csw = qh->csw;
|
|
qh->tds = td;
|
|
if(td == nil)
|
|
qh->csw = (csw & ~Tdactive) | Tdhalt;
|
|
else{
|
|
csw &= Tddata1 | Tdping; /* save */
|
|
qh->csw = Tdhalt;
|
|
coherence();
|
|
qh->tclink = 0;
|
|
qh->alink = Lterm;
|
|
qh->nlink = PADDR(td);
|
|
for(i = 0; i < nelem(qh->buffer); i++)
|
|
qh->buffer[i] = 0;
|
|
coherence();
|
|
qh->csw = csw & ~(Tdhalt|Tdactive); /* activate next */
|
|
}
|
|
coherence();
|
|
}
|
|
|
|
static char*
|
|
seprintlink(char *s, char *se, char *name, ulong l, int typed)
|
|
{
|
|
s = seprint(s, se, "%s %ulx", name, l);
|
|
if((l & Lterm) != 0)
|
|
return seprint(s, se, "T");
|
|
if(typed == 0)
|
|
return s;
|
|
switch(l & (3<<1)){
|
|
case Litd:
|
|
return seprint(s, se, "I");
|
|
case Lqh:
|
|
return seprint(s, se, "Q");
|
|
case Lsitd:
|
|
return seprint(s, se, "S");
|
|
default:
|
|
return seprint(s, se, "F");
|
|
}
|
|
}
|
|
|
|
static char*
|
|
seprintitd(char *s, char *se, Itd *td)
|
|
{
|
|
int i;
|
|
ulong b0, b1;
|
|
char flags[6];
|
|
char *rw;
|
|
|
|
if(td == nil)
|
|
return seprint(s, se, "<nil itd>\n");
|
|
b0 = td->buffer[0];
|
|
b1 = td->buffer[1];
|
|
|
|
s = seprint(s, se, "itd %#p", td);
|
|
rw = (b1 & Itdin) ? "in" : "out";
|
|
s = seprint(s, se, " %s ep %uld dev %uld max %uld mult %uld",
|
|
rw, (b0>>8)&Epmax, (b0&Devmax),
|
|
td->buffer[1] & 0x7ff, b1 & 3);
|
|
s = seprintlink(s, se, " link", td->link, 1);
|
|
s = seprint(s, se, "\n");
|
|
for(i = 0; i < nelem(td->csw); i++){
|
|
memset(flags, '-', 5);
|
|
if((td->csw[i] & Itdactive) != 0)
|
|
flags[0] = 'a';
|
|
if((td->csw[i] & Itdioc) != 0)
|
|
flags[1] = 'i';
|
|
if((td->csw[i] & Itddberr) != 0)
|
|
flags[2] = 'd';
|
|
if((td->csw[i] & Itdbabble) != 0)
|
|
flags[3] = 'b';
|
|
if((td->csw[i] & Itdtrerr) != 0)
|
|
flags[4] = 't';
|
|
flags[5] = 0;
|
|
s = seprint(s, se, "\ttd%d %s", i, flags);
|
|
s = seprint(s, se, " len %uld", (td->csw[i] >> 16) & 0x7ff);
|
|
s = seprint(s, se, " pg %uld", (td->csw[i] >> 12) & 0x7);
|
|
s = seprint(s, se, " off %uld\n", td->csw[i] & 0xfff);
|
|
}
|
|
s = seprint(s, se, "\tbuffs:");
|
|
for(i = 0; i < nelem(td->buffer); i++)
|
|
s = seprint(s, se, " %#lux", td->buffer[i] >> 12);
|
|
return seprint(s, se, "\n");
|
|
}
|
|
|
|
static char*
|
|
seprintsitd(char *s, char *se, Sitd *td)
|
|
{
|
|
char rw, pg, ss;
|
|
char flags[8];
|
|
static char pc[4] = { 'a', 'b', 'm', 'e' };
|
|
|
|
if(td == nil)
|
|
return seprint(s, se, "<nil sitd>\n");
|
|
s = seprint(s, se, "sitd %#p", td);
|
|
rw = (td->epc & Stdin) ? 'r' : 'w';
|
|
s = seprint(s, se, " %c ep %uld dev %uld",
|
|
rw, (td->epc>>8)&0xf, td->epc&0x7f);
|
|
s = seprint(s, se, " max %uld", (td->csw >> 16) & 0x3ff);
|
|
s = seprint(s, se, " hub %uld", (td->epc >> 16) & 0x7f);
|
|
s = seprint(s, se, " port %uld\n", (td->epc >> 24) & 0x7f);
|
|
memset(flags, '-', 7);
|
|
if((td->csw & Stdactive) != 0)
|
|
flags[0] = 'a';
|
|
if((td->csw & Stdioc) != 0)
|
|
flags[1] = 'i';
|
|
if((td->csw & Stderr) != 0)
|
|
flags[2] = 'e';
|
|
if((td->csw & Stddberr) != 0)
|
|
flags[3] = 'd';
|
|
if((td->csw & Stdbabble) != 0)
|
|
flags[4] = 'b';
|
|
if((td->csw & Stdtrerr) != 0)
|
|
flags[5] = 't';
|
|
if((td->csw & Stdmmf) != 0)
|
|
flags[6] = 'n';
|
|
flags[7] = 0;
|
|
ss = (td->csw & Stddcs) ? 'c' : 's';
|
|
pg = (td->csw & Stdpg) ? '1' : '0';
|
|
s = seprint(s, se, "\t%s %cs pg%c", flags, ss, pg);
|
|
s = seprint(s, se, " b0 %#lux b1 %#lux off %uld\n",
|
|
td->buffer[0] >> 12, td->buffer[1] >> 12, td->buffer[0] & 0xfff);
|
|
s = seprint(s, se, "\ttpos %c tcnt %uld",
|
|
pc[(td->buffer[0]>>3)&3], td->buffer[1] & 7);
|
|
s = seprint(s, se, " ssm %#lux csm %#lux cspm %#lux",
|
|
td->mfs & 0xff, (td->mfs>>8) & 0xff, (td->csw>>8) & 0xff);
|
|
s = seprintlink(s, se, " link", td->link, 1);
|
|
s = seprintlink(s, se, " blink", td->blink, 0);
|
|
return seprint(s, se, "\n");
|
|
}
|
|
|
|
static long
|
|
maxtdlen(Td *td)
|
|
{
|
|
return (td->csw >> Tdlenshift) & Tdlenmask;
|
|
}
|
|
|
|
static long
|
|
tdlen(Td *td)
|
|
{
|
|
if(td->data == nil)
|
|
return 0;
|
|
return td->ndata - maxtdlen(td);
|
|
}
|
|
|
|
static char*
|
|
seprinttd(char *s, char *se, Td *td, char *tag)
|
|
{
|
|
int i;
|
|
char t, ss;
|
|
char flags[9];
|
|
static char *tok[4] = { "out", "in", "setup", "BUG" };
|
|
|
|
if(td == nil)
|
|
return seprint(s, se, "%s <nil td>\n", tag);
|
|
s = seprint(s, se, "%s %#p", tag, td);
|
|
s = seprintlink(s, se, " nlink", td->nlink, 0);
|
|
s = seprintlink(s, se, " alink", td->alink, 0);
|
|
s = seprint(s, se, " %s", tok[(td->csw & Tdtok) >> 8]);
|
|
if((td->csw & Tdping) != 0)
|
|
s = seprint(s, se, " png");
|
|
memset(flags, '-', 8);
|
|
if((td->csw & Tdactive) != 0)
|
|
flags[0] = 'a';
|
|
if((td->csw & Tdioc) != 0)
|
|
flags[1] = 'i';
|
|
if((td->csw & Tdhalt) != 0)
|
|
flags[2] = 'h';
|
|
if((td->csw & Tddberr) != 0)
|
|
flags[3] = 'd';
|
|
if((td->csw & Tdbabble) != 0)
|
|
flags[4] = 'b';
|
|
if((td->csw & Tdtrerr) != 0)
|
|
flags[5] = 't';
|
|
if((td->csw & Tdmmf) != 0)
|
|
flags[6] = 'n';
|
|
if((td->csw & (Tderr2|Tderr1)) == 0)
|
|
flags[7] = 'z';
|
|
flags[8] = 0;
|
|
t = (td->csw & Tddata1) ? '1' : '0';
|
|
ss = (td->csw & Tddcs) ? 'c' : 's';
|
|
s = seprint(s, se, "\n\td%c %s %cs", t, flags, ss);
|
|
s = seprint(s, se, " max %uld", maxtdlen(td));
|
|
s = seprint(s, se, " pg %uld off %#lux\n",
|
|
(td->csw >> Tdpgshift) & Tdpgmask, td->buffer[0] & 0xFFF);
|
|
s = seprint(s, se, "\tbuffs:");
|
|
for(i = 0; i < nelem(td->buffer); i++)
|
|
s = seprint(s, se, " %#lux", td->buffer[i]>>12);
|
|
if(td->data != nil)
|
|
s = seprintdata(s, se, td->data, td->ndata);
|
|
return seprint(s, se, "\n");
|
|
}
|
|
|
|
static void
|
|
dumptd(Td *td, char *pref)
|
|
{
|
|
char buf[256];
|
|
char *se;
|
|
int i;
|
|
|
|
i = 0;
|
|
se = buf+sizeof(buf);
|
|
for(; td != nil; td = td->next){
|
|
seprinttd(buf, se, td, pref);
|
|
print("%s", buf);
|
|
if(i++ > 20){
|
|
print("...more tds...\n");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
qhdump(Qh *qh)
|
|
{
|
|
char buf[256];
|
|
char *s, *se, *tag;
|
|
Td td;
|
|
static char *speed[] = {"full", "low", "high", "BUG"};
|
|
|
|
if(qh == nil){
|
|
print("<nil qh>\n");
|
|
return;
|
|
}
|
|
if(qh->io == nil)
|
|
tag = "qh";
|
|
else
|
|
tag = qh->io->tag;
|
|
se = buf+sizeof(buf);
|
|
s = seprint(buf, se, "%s %#p", tag, qh);
|
|
s = seprint(s, se, " ep %uld dev %uld",
|
|
(qh->eps0>>8)&0xf, qh->eps0&0x7f);
|
|
s = seprint(s, se, " hub %uld", (qh->eps1 >> 16) & 0x7f);
|
|
s = seprint(s, se, " port %uld", (qh->eps1 >> 23) & 0x7f);
|
|
s = seprintlink(s, se, " link", qh->link, 1);
|
|
seprint(s, se, " clink %#lux", qh->tclink);
|
|
print("%s\n", buf);
|
|
s = seprint(buf, se, "\tnrld %uld", (qh->eps0 >> Qhrlcshift) & Qhrlcmask);
|
|
s = seprint(s, se, " nak %uld", (qh->alink >> 1) & 0xf);
|
|
s = seprint(s, se, " max %uld ", qhmaxpkt(qh));
|
|
if((qh->eps0 & Qhnhctl) != 0)
|
|
s = seprint(s, se, "c");
|
|
if((qh->eps0 & Qhhrl) != 0)
|
|
s = seprint(s, se, "h");
|
|
if((qh->eps0 & Qhdtc) != 0)
|
|
s = seprint(s, se, "d");
|
|
if((qh->eps0 & Qhint) != 0)
|
|
s = seprint(s, se, "i");
|
|
s = seprint(s, se, " %s", speed[(qh->eps0 >> 12) & 3]);
|
|
s = seprint(s, se, " mult %uld", (qh->eps1 >> Qhmultshift) & Qhmultmask);
|
|
seprint(s, se, " scm %#lux ism %#lux\n",
|
|
(qh->eps1 >> 8 & 0xff), qh->eps1 & 0xff);
|
|
print("%s\n", buf);
|
|
memset(&td, 0, sizeof(td));
|
|
memmove(&td, &qh->nlink, 32); /* overlay area */
|
|
seprinttd(buf, se, &td, "\tovl");
|
|
print("%s", buf);
|
|
}
|
|
|
|
static void
|
|
isodump(Isoio* iso, int all)
|
|
{
|
|
Itd *td, *tdi, *tdu;
|
|
Sitd *std, *stdi, *stdu;
|
|
char buf[256];
|
|
int i;
|
|
|
|
if(iso == nil){
|
|
print("<nil iso>\n");
|
|
return;
|
|
}
|
|
print("iso %#p %s %s speed state %d nframes %d maxsz %uld",
|
|
iso, iso->tok == Tdtokin ? "in" : "out",
|
|
iso->hs ? "high" : "full",
|
|
iso->state, iso->nframes, iso->maxsize);
|
|
print(" td0 %uld tdi %#p tdu %#p data %#p\n",
|
|
iso->td0frno, iso->tdi, iso->tdu, iso->data);
|
|
if(iso->err != nil)
|
|
print("\terr %s\n", iso->err);
|
|
if(iso->err != nil)
|
|
print("\terr='%s'\n", iso->err);
|
|
if(all == 0)
|
|
if(iso->hs != 0){
|
|
tdi = iso->tdi;
|
|
seprintitd(buf, buf+sizeof(buf), tdi);
|
|
print("\ttdi %s\n", buf);
|
|
tdu = iso->tdu;
|
|
seprintitd(buf, buf+sizeof(buf), tdu);
|
|
print("\ttdu %s\n", buf);
|
|
}else{
|
|
stdi = iso->stdi;
|
|
seprintsitd(buf, buf+sizeof(buf), stdi);
|
|
print("\tstdi %s\n", buf);
|
|
stdu = iso->stdu;
|
|
seprintsitd(buf, buf+sizeof(buf), stdu);
|
|
print("\tstdu %s\n", buf);
|
|
}
|
|
else
|
|
for(i = 0; i < Nisoframes; i++)
|
|
if(iso->tdps[i] != nil)
|
|
if(iso->hs != 0){
|
|
td = iso->itdps[i];
|
|
seprintitd(buf, buf+sizeof(buf), td);
|
|
if(td == iso->tdi)
|
|
print("i->");
|
|
if(td == iso->tdu)
|
|
print("i->");
|
|
print("[%d]\t%s", i, buf);
|
|
}else{
|
|
std = iso->sitdps[i];
|
|
seprintsitd(buf, buf+sizeof(buf), std);
|
|
if(std == iso->stdi)
|
|
print("i->");
|
|
if(std == iso->stdu)
|
|
print("u->");
|
|
print("[%d]\t%s", i, buf);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dump(Hci *hp)
|
|
{
|
|
int i;
|
|
char *s, *se;
|
|
char buf[128];
|
|
Ctlr *ctlr;
|
|
Eopio *opio;
|
|
Isoio *iso;
|
|
Qh *qh;
|
|
|
|
ctlr = hp->aux;
|
|
opio = ctlr->opio;
|
|
ilock(ctlr);
|
|
print("ehci port %#p frames %#p (%d fr.) nintr %d ntdintr %d",
|
|
ctlr->capio, ctlr->frames, ctlr->nframes,
|
|
ctlr->nintr, ctlr->ntdintr);
|
|
print(" nqhintr %d nisointr %d\n", ctlr->nqhintr, ctlr->nisointr);
|
|
print("\tcmd %#lux sts %#lux intr %#lux frno %uld",
|
|
opio->cmd, opio->sts, opio->intr, opio->frno);
|
|
print(" base %#lux link %#lux fr0 %#lux\n",
|
|
opio->frbase, opio->link, ctlr->frames[0]);
|
|
se = buf+sizeof(buf);
|
|
s = seprint(buf, se, "\t");
|
|
for(i = 0; i < hp->nports; i++){
|
|
s = seprint(s, se, "p%d %#lux ", i, opio->portsc[i]);
|
|
if(hp->nports > 4 && i == hp->nports/2 - 1)
|
|
s = seprint(s, se, "\n\t");
|
|
}
|
|
print("%s\n", buf);
|
|
qh = ctlr->qhs;
|
|
i = 0;
|
|
do{
|
|
qhdump(qh);
|
|
qh = qh->next;
|
|
}while(qh != ctlr->qhs && i++ < 100);
|
|
if(i > 100)
|
|
print("...too many Qhs...\n");
|
|
if(ctlr->intrqhs != nil)
|
|
print("intr qhs:\n");
|
|
for(qh = ctlr->intrqhs; qh != nil; qh = qh->inext)
|
|
qhdump(qh);
|
|
if(ctlr->iso != nil)
|
|
print("iso:\n");
|
|
for(iso = ctlr->iso; iso != nil; iso = iso->next)
|
|
isodump(ctlr->iso, 0);
|
|
print("%d eds in tree\n", ctlr->ntree);
|
|
iunlock(ctlr);
|
|
lock(&edpool);
|
|
print("%d eds allocated = %d in use + %d free\n",
|
|
edpool.nalloc, edpool.ninuse, edpool.nfree);
|
|
unlock(&edpool);
|
|
}
|
|
|
|
static char*
|
|
errmsg(int err)
|
|
{
|
|
if(err == 0)
|
|
return "ok";
|
|
if(err & Tddberr)
|
|
return "data buffer error";
|
|
if(err & Tdbabble)
|
|
return "babble detected";
|
|
if(err & Tdtrerr)
|
|
return "transaction error";
|
|
if(err & Tdmmf)
|
|
return "missed µframe";
|
|
if(err & Tdhalt)
|
|
return Estalled; /* [uo]hci report this error */
|
|
return Eio;
|
|
}
|
|
|
|
static char*
|
|
ierrmsg(int err)
|
|
{
|
|
if(err == 0)
|
|
return "ok";
|
|
if(err & Itddberr)
|
|
return "data buffer error";
|
|
if(err & Itdbabble)
|
|
return "babble detected";
|
|
if(err & Itdtrerr)
|
|
return "transaction error";
|
|
return Eio;
|
|
}
|
|
|
|
static char*
|
|
serrmsg(int err)
|
|
{
|
|
if(err & Stderr)
|
|
return "translation translator error";
|
|
/* other errors have same numbers than Td errors */
|
|
return errmsg(err);
|
|
}
|
|
|
|
static int
|
|
isocanread(void *a)
|
|
{
|
|
Isoio *iso;
|
|
|
|
iso = a;
|
|
if(iso->state == Qclose)
|
|
return 1;
|
|
if(iso->state == Qrun && iso->tok == Tdtokin){
|
|
if(iso->hs != 0 && iso->tdi != iso->tdu)
|
|
return 1;
|
|
if(iso->hs == 0 && iso->stdi != iso->stdu)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
isocanwrite(void *a)
|
|
{
|
|
Isoio *iso;
|
|
|
|
iso = a;
|
|
if(iso->state == Qclose)
|
|
return 1;
|
|
if(iso->state == Qrun && iso->tok == Tdtokout){
|
|
if(iso->hs != 0 && iso->tdu->next != iso->tdi)
|
|
return 1;
|
|
if(iso->hs == 0 && iso->stdu->next != iso->stdi)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
itdinit(Isoio *iso, Itd *td)
|
|
{
|
|
int p, t;
|
|
ulong pa, tsize, size;
|
|
|
|
/*
|
|
* BUG: This does not put an integral number of samples
|
|
* on each µframe unless samples per packet % 8 == 0
|
|
* Also, all samples are packed early on each frame.
|
|
*/
|
|
p = 0;
|
|
size = td->ndata = td->mdata;
|
|
pa = PADDR(td->data);
|
|
for(t = 0; size > 0 && t < 8; t++){
|
|
tsize = size;
|
|
if(tsize > iso->maxsize)
|
|
tsize = iso->maxsize;
|
|
size -= tsize;
|
|
assert(p < nelem(td->buffer));
|
|
td->csw[t] = tsize << Itdlenshift | p << Itdpgshift |
|
|
(pa & 0xFFF) << Itdoffshift | Itdactive | Itdioc;
|
|
coherence();
|
|
if(((pa+tsize) & ~0xFFF) != (pa & ~0xFFF))
|
|
p++;
|
|
pa += tsize;
|
|
}
|
|
}
|
|
|
|
static void
|
|
sitdinit(Isoio *iso, Sitd *td)
|
|
{
|
|
td->ndata = td->mdata & Stdlenmask;
|
|
td->buffer[0] = PADDR(td->data);
|
|
td->buffer[1] = (td->buffer[0] & ~0xFFF) + 0x1000;
|
|
if(iso->tok == Tdtokin || td->ndata <= 188)
|
|
td->buffer[1] |= Stdtpall;
|
|
else
|
|
td->buffer[1] |= Stdtpbegin;
|
|
if(iso->tok == Tdtokin)
|
|
td->buffer[1] |= 1;
|
|
else
|
|
td->buffer[1] |= ((td->ndata + 187) / 188) & Stdtcntmask;
|
|
coherence();
|
|
td->csw = td->ndata << Stdlenshift | Stdactive | Stdioc;
|
|
coherence();
|
|
}
|
|
|
|
static int
|
|
itdactive(Itd *td)
|
|
{
|
|
int i;
|
|
|
|
for(i = 0; i < nelem(td->csw); i++)
|
|
if((td->csw[i] & Itdactive) != 0)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
isodelay(void *a)
|
|
{
|
|
Isoio *iso;
|
|
int delay;
|
|
|
|
iso = a;
|
|
if(iso->state == Qclose || iso->err || iso->delay == 0)
|
|
return 1;
|
|
|
|
delay = 0;
|
|
if(iso->hs){
|
|
Itd *i;
|
|
|
|
for(i = iso->tdi; i->next != iso->tdu; i = i->next){
|
|
if(!itdactive(i))
|
|
continue;
|
|
delay += i->mdata;
|
|
if(delay > iso->delay)
|
|
break;
|
|
}
|
|
} else {
|
|
Sitd *i;
|
|
|
|
for(i = iso->stdi; i->next != iso->stdu; i = i->next){
|
|
if((i->csw & Stdactive) == 0)
|
|
continue;
|
|
delay += i->mdata;
|
|
if(delay > iso->delay)
|
|
break;
|
|
}
|
|
}
|
|
|
|
return delay <= iso->delay;
|
|
}
|
|
|
|
|
|
static int
|
|
isohsinterrupt(Ctlr *ctlr, Isoio *iso)
|
|
{
|
|
int err, i, nframes, t;
|
|
Itd *tdi;
|
|
|
|
tdi = iso->tdi;
|
|
assert(tdi != nil);
|
|
if(itdactive(tdi)) /* not all tds are done */
|
|
return 0;
|
|
ctlr->nisointr++;
|
|
ddiprint("isohsintr: iso %#p: tdi %#p tdu %#p\n", iso, tdi, iso->tdu);
|
|
if(iso->state != Qrun && iso->state != Qdone)
|
|
panic("isofsintr: iso state");
|
|
if(ehcidebug > 1 || iso->debug > 1)
|
|
isodump(iso, 0);
|
|
|
|
nframes = iso->nframes / 2; /* limit how many we look */
|
|
if(nframes > Nisoframes)
|
|
nframes = Nisoframes;
|
|
|
|
if(iso->tok == Tdtokin)
|
|
tdi->ndata = 0;
|
|
/* else, it has the number of bytes transferred */
|
|
|
|
for(i = 0; i < nframes && itdactive(tdi) == 0; i++){
|
|
if(iso->tok == Tdtokin)
|
|
tdi->ndata += (tdi->csw[i] >> Itdlenshift) & Itdlenmask;
|
|
err = 0;
|
|
coherence();
|
|
for(t = 0; t < nelem(tdi->csw); t++){
|
|
tdi->csw[t] &= ~Itdioc;
|
|
coherence();
|
|
err |= tdi->csw[t] & Itderrors;
|
|
}
|
|
if(err == 0)
|
|
iso->nerrs = 0;
|
|
else if(iso->nerrs++ > iso->nframes/2){
|
|
if(iso->err == nil){
|
|
iso->err = ierrmsg(err);
|
|
diprint("isohsintr: tdi %#p error %#ux %s\n",
|
|
tdi, err, iso->err);
|
|
diprint("ctlr load %uld\n", ctlr->load);
|
|
}
|
|
tdi->ndata = 0;
|
|
}else
|
|
tdi->ndata = 0;
|
|
if(tdi->next == iso->tdu || tdi->next->next == iso->tdu){
|
|
memset(iso->tdu->data, 0, iso->tdu->mdata);
|
|
itdinit(iso, iso->tdu);
|
|
iso->tdu = iso->tdu->next;
|
|
iso->nleft = 0;
|
|
}
|
|
tdi = tdi->next;
|
|
coherence();
|
|
}
|
|
ddiprint("isohsintr: %d frames processed\n", nframes);
|
|
if(i == nframes){
|
|
tdi->csw[0] |= Itdioc;
|
|
coherence();
|
|
}
|
|
iso->tdi = tdi;
|
|
coherence();
|
|
if(isocanwrite(iso) || isocanread(iso)){
|
|
diprint("wakeup iso %#p tdi %#p tdu %#p\n", iso,
|
|
iso->tdi, iso->tdu);
|
|
wakeup(iso);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
isofsinterrupt(Ctlr *ctlr, Isoio *iso)
|
|
{
|
|
int err, i, nframes;
|
|
Sitd *stdi;
|
|
|
|
stdi = iso->stdi;
|
|
assert(stdi != nil);
|
|
if((stdi->csw & Stdactive) != 0) /* nothing new done */
|
|
return 0;
|
|
ctlr->nisointr++;
|
|
ddiprint("isofsintr: iso %#p: tdi %#p tdu %#p\n", iso, stdi, iso->stdu);
|
|
if(iso->state != Qrun && iso->state != Qdone)
|
|
panic("isofsintr: iso state");
|
|
if(ehcidebug > 1 || iso->debug > 1)
|
|
isodump(iso, 0);
|
|
|
|
nframes = iso->nframes / 2; /* limit how many we look */
|
|
if(nframes > Nisoframes)
|
|
nframes = Nisoframes;
|
|
|
|
for(i = 0; i < nframes && (stdi->csw & Stdactive) == 0; i++){
|
|
stdi->csw &= ~Stdioc;
|
|
/* write back csw and see if it produces errors */
|
|
coherence();
|
|
err = stdi->csw & Stderrors;
|
|
if(err == 0){
|
|
iso->nerrs = 0;
|
|
if(iso->tok == Tdtokin)
|
|
stdi->ndata = (stdi->csw>>Stdlenshift)&Stdlenmask;
|
|
/* else len is assumed correct */
|
|
}else if(iso->nerrs++ > iso->nframes/2){
|
|
if(iso->err == nil){
|
|
iso->err = serrmsg(err);
|
|
diprint("isofsintr: tdi %#p error %#ux %s\n",
|
|
stdi, err, iso->err);
|
|
diprint("ctlr load %uld\n", ctlr->load);
|
|
}
|
|
stdi->ndata = 0;
|
|
}else
|
|
stdi->ndata = 0;
|
|
|
|
if(stdi->next == iso->stdu || stdi->next->next == iso->stdu){
|
|
memset(iso->stdu->data, 0, iso->stdu->mdata);
|
|
coherence();
|
|
sitdinit(iso, iso->stdu);
|
|
iso->stdu = iso->stdu->next;
|
|
iso->nleft = 0;
|
|
}
|
|
coherence();
|
|
stdi = stdi->next;
|
|
}
|
|
ddiprint("isofsintr: %d frames processed\n", nframes);
|
|
if(i == nframes){
|
|
stdi->csw |= Stdioc;
|
|
coherence();
|
|
}
|
|
iso->stdi = stdi;
|
|
coherence();
|
|
if(isocanwrite(iso) || isocanread(iso)){
|
|
diprint("wakeup iso %#p tdi %#p tdu %#p\n", iso,
|
|
iso->stdi, iso->stdu);
|
|
wakeup(iso);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
qhinterrupt(Ctlr *ctlr, Qh *qh)
|
|
{
|
|
Td *td;
|
|
int err;
|
|
|
|
if(qh->state != Qrun)
|
|
panic("qhinterrupt: qh state");
|
|
td = qh->tds;
|
|
if(td == nil)
|
|
panic("qhinterrupt: no tds");
|
|
if((td->csw & Tdactive) == 0)
|
|
ddqprint("qhinterrupt port %#p qh %#p\n", ctlr->capio, qh);
|
|
for(; td != nil; td = td->next){
|
|
if(td->csw & Tdactive)
|
|
return 0;
|
|
err = td->csw & Tderrors;
|
|
if(err != 0){
|
|
if(qh->io->err == nil){
|
|
qh->io->err = errmsg(err);
|
|
dqprint("qhintr: td %#p csw %#lux error %#ux %s\n",
|
|
td, td->csw, err, qh->io->err);
|
|
}
|
|
break;
|
|
}
|
|
td->ndata = tdlen(td);
|
|
coherence();
|
|
if(td->ndata < maxtdlen(td)){ /* EOT */
|
|
td = td->next;
|
|
break;
|
|
}
|
|
}
|
|
/*
|
|
* Done. Make void the Tds not used (errors or EOT) and wakeup epio.
|
|
*/
|
|
for(; td != nil; td = td->next)
|
|
td->ndata = 0;
|
|
coherence();
|
|
qh->state = Qdone;
|
|
coherence();
|
|
wakeup(qh->io);
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
ehciintr(Hci *hp)
|
|
{
|
|
Ctlr *ctlr;
|
|
Eopio *opio;
|
|
Isoio *iso;
|
|
ulong sts;
|
|
Qh *qh;
|
|
int i, some;
|
|
|
|
ctlr = hp->aux;
|
|
opio = ctlr->opio;
|
|
|
|
/*
|
|
* Will we know in USB 3.0 who the interrupt was for?.
|
|
* Do they still teach indexing in CS?
|
|
* This is Intel's doing.
|
|
*/
|
|
ilock(ctlr);
|
|
ctlr->nintr++;
|
|
sts = opio->sts & Sintrs;
|
|
if(sts == 0){ /* not ours; shared intr. */
|
|
iunlock(ctlr);
|
|
return 0;
|
|
}
|
|
opio->sts = sts;
|
|
coherence();
|
|
if((sts & Sherr) != 0)
|
|
print("ehci: port %#p fatal host system error\n", ctlr->capio);
|
|
if((sts & Shalted) != 0)
|
|
print("ehci: port %#p: halted\n", ctlr->capio);
|
|
if((sts & Sasync) != 0){
|
|
dprint("ehci: doorbell\n");
|
|
wakeup(ctlr);
|
|
}
|
|
/*
|
|
* We enter always this if, even if it seems the
|
|
* interrupt does not report anything done/failed.
|
|
* Some controllers don't post interrupts right.
|
|
*/
|
|
some = 0;
|
|
if((sts & (Serrintr|Sintr)) != 0){
|
|
ctlr->ntdintr++;
|
|
if(ehcidebug > 1){
|
|
print("ehci port %#p frames %#p nintr %d ntdintr %d",
|
|
ctlr->capio, ctlr->frames,
|
|
ctlr->nintr, ctlr->ntdintr);
|
|
print(" nqhintr %d nisointr %d\n",
|
|
ctlr->nqhintr, ctlr->nisointr);
|
|
print("\tcmd %#lux sts %#lux intr %#lux frno %uld",
|
|
opio->cmd, opio->sts, opio->intr, opio->frno);
|
|
}
|
|
|
|
/* process the Iso transfers */
|
|
for(iso = ctlr->iso; iso != nil; iso = iso->next)
|
|
if(iso->state == Qrun || iso->state == Qdone)
|
|
if(iso->hs != 0)
|
|
some += isohsinterrupt(ctlr, iso);
|
|
else
|
|
some += isofsinterrupt(ctlr, iso);
|
|
|
|
/* process the qhs in the periodic tree */
|
|
for(qh = ctlr->intrqhs; qh != nil; qh = qh->inext)
|
|
if(qh->state == Qrun)
|
|
some += qhinterrupt(ctlr, qh);
|
|
|
|
/* process the async Qh circular list */
|
|
qh = ctlr->qhs;
|
|
i = 0;
|
|
do{
|
|
if (qh == nil)
|
|
panic("ehciintr: nil qh");
|
|
if(qh->state == Qrun)
|
|
some += qhinterrupt(ctlr, qh);
|
|
qh = qh->next;
|
|
}while(qh != ctlr->qhs && i++ < 100);
|
|
if(i > 100)
|
|
print("echi: interrupt: qh loop?\n");
|
|
}
|
|
// if (some == 0)
|
|
// panic("ehciintr: no work");
|
|
iunlock(ctlr);
|
|
return some;
|
|
}
|
|
|
|
static void
|
|
interrupt(Ureg*, void* a)
|
|
{
|
|
ehciintr(a);
|
|
}
|
|
|
|
static int
|
|
portenable(Hci *hp, int port, int on)
|
|
{
|
|
Ctlr *ctlr;
|
|
Eopio *opio;
|
|
int s;
|
|
|
|
ctlr = hp->aux;
|
|
opio = ctlr->opio;
|
|
s = opio->portsc[port-1];
|
|
eqlock(&ctlr->portlck);
|
|
if(waserror()){
|
|
qunlock(&ctlr->portlck);
|
|
nexterror();
|
|
}
|
|
dprint("ehci %#p port %d enable=%d; sts %#x\n",
|
|
ctlr->capio, port, on, s);
|
|
ilock(ctlr);
|
|
if(s & (Psstatuschg | Pschange))
|
|
opio->portsc[port-1] = s;
|
|
if(on)
|
|
opio->portsc[port-1] |= Psenable;
|
|
else
|
|
opio->portsc[port-1] &= ~Psenable;
|
|
coherence();
|
|
microdelay(64);
|
|
iunlock(ctlr);
|
|
tsleep(&up->sleep, return0, 0, Enabledelay);
|
|
dprint("ehci %#p port %d enable=%d: sts %#lux\n",
|
|
ctlr->capio, port, on, opio->portsc[port-1]);
|
|
qunlock(&ctlr->portlck);
|
|
poperror();
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* If we detect during status that the port is low-speed or
|
|
* during reset that it's full-speed, the device is not for
|
|
* ourselves. The companion controller will take care.
|
|
* Low-speed devices will not be seen by usbd. Full-speed
|
|
* ones are seen because it's only after reset that we know what
|
|
* they are (usbd may notice a device not enabled in this case).
|
|
*/
|
|
static void
|
|
portlend(Ctlr *ctlr, int port, char *ss)
|
|
{
|
|
Eopio *opio;
|
|
ulong s;
|
|
|
|
opio = ctlr->opio;
|
|
|
|
dprint("ehci %#p port %d: %s speed device: no longer owned\n",
|
|
ctlr->capio, port, ss);
|
|
s = opio->portsc[port-1] & ~(Pschange|Psstatuschg);
|
|
opio->portsc[port-1] = s | Psowner;
|
|
coherence();
|
|
}
|
|
|
|
static int
|
|
portreset(Hci *hp, int port, int on)
|
|
{
|
|
ulong s;
|
|
Eopio *opio;
|
|
Ctlr *ctlr;
|
|
int i;
|
|
|
|
if(on == 0)
|
|
return 0;
|
|
|
|
ctlr = hp->aux;
|
|
opio = ctlr->opio;
|
|
eqlock(&ctlr->portlck);
|
|
if(waserror()){
|
|
iunlock(ctlr);
|
|
qunlock(&ctlr->portlck);
|
|
nexterror();
|
|
}
|
|
s = opio->portsc[port-1];
|
|
dprint("ehci %#p port %d reset; sts %#lux\n", ctlr->capio, port, s);
|
|
ilock(ctlr);
|
|
s &= ~(Psenable|Psreset);
|
|
opio->portsc[port-1] = s | Psreset; /* initiate reset */
|
|
coherence();
|
|
|
|
for(i = 0; i < 50; i++){ /* was 10 */
|
|
delay(10);
|
|
if((opio->portsc[port-1] & Psreset) == 0)
|
|
break;
|
|
}
|
|
if (opio->portsc[port-1] & Psreset)
|
|
iprint("ehci %#p: port %d didn't reset after %d ms; sts %#lux\n",
|
|
ctlr->capio, port, i * 10, opio->portsc[port-1]);
|
|
opio->portsc[port-1] &= ~Psreset; /* force appearance of reset done */
|
|
coherence();
|
|
|
|
delay(10);
|
|
if((opio->portsc[port-1] & Psenable) == 0)
|
|
portlend(ctlr, port, "full");
|
|
|
|
iunlock(ctlr);
|
|
dprint("ehci %#p after port %d reset; sts %#lux\n",
|
|
ctlr->capio, port, opio->portsc[port-1]);
|
|
qunlock(&ctlr->portlck);
|
|
poperror();
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
portstatus(Hci *hp, int port)
|
|
{
|
|
int s, r;
|
|
Eopio *opio;
|
|
Ctlr *ctlr;
|
|
|
|
ctlr = hp->aux;
|
|
opio = ctlr->opio;
|
|
eqlock(&ctlr->portlck);
|
|
if(waserror()){
|
|
iunlock(ctlr);
|
|
qunlock(&ctlr->portlck);
|
|
nexterror();
|
|
}
|
|
ilock(ctlr);
|
|
s = opio->portsc[port-1];
|
|
if(s & (Psstatuschg | Pschange)){
|
|
opio->portsc[port-1] = s;
|
|
coherence();
|
|
ddprint("ehci %#p port %d status %#x\n", ctlr->capio, port, s);
|
|
}
|
|
/*
|
|
* If the port is a low speed port we yield ownership now
|
|
* to the [uo]hci companion controller and pretend it's not here.
|
|
*/
|
|
if((s & Pspresent) != 0 && (s & Pslinemask) == Pslow){
|
|
portlend(ctlr, port, "low");
|
|
s &= ~Pspresent; /* not for us this time */
|
|
}
|
|
iunlock(ctlr);
|
|
qunlock(&ctlr->portlck);
|
|
poperror();
|
|
|
|
/*
|
|
* We must return status bits as a
|
|
* get port status hub request would do.
|
|
*/
|
|
r = 0;
|
|
if(s & Pspresent)
|
|
r |= HPpresent|HPhigh;
|
|
if(s & Psenable)
|
|
r |= HPenable;
|
|
if(s & Pssuspend)
|
|
r |= HPsuspend;
|
|
if(s & Psreset)
|
|
r |= HPreset;
|
|
if(s & Psstatuschg)
|
|
r |= HPstatuschg;
|
|
if(s & Pschange)
|
|
r |= HPchange;
|
|
return r;
|
|
}
|
|
|
|
static char*
|
|
seprintio(char *s, char *e, Qio *io, char *pref)
|
|
{
|
|
s = seprint(s,e,"%s io %#p qh %#p id %#x", pref, io, io->qh, io->usbid);
|
|
s = seprint(s,e," iot %ld", io->iotime);
|
|
s = seprint(s,e," tog %#x tok %#x err %s", io->toggle, io->tok, io->err);
|
|
return s;
|
|
}
|
|
|
|
static char*
|
|
seprintep(char *s, char *e, Ep *ep)
|
|
{
|
|
Qio *io;
|
|
Ctlio *cio;
|
|
Ctlr *ctlr;
|
|
|
|
ctlr = ep->hp->aux;
|
|
ilock(ctlr);
|
|
if(ep->aux == nil){
|
|
*s = 0;
|
|
iunlock(ctlr);
|
|
return s;
|
|
}
|
|
switch(ep->ttype){
|
|
case Tctl:
|
|
cio = ep->aux;
|
|
s = seprintio(s, e, cio, "c");
|
|
s = seprint(s, e, "\trepl %d ndata %d\n", ep->rhrepl, cio->ndata);
|
|
break;
|
|
case Tbulk:
|
|
case Tintr:
|
|
io = ep->aux;
|
|
if(ep->mode != OWRITE)
|
|
s = seprintio(s, e, &io[OREAD], "r");
|
|
if(ep->mode != OREAD)
|
|
s = seprintio(s, e, &io[OWRITE], "w");
|
|
break;
|
|
case Tiso:
|
|
*s = 0;
|
|
break;
|
|
}
|
|
iunlock(ctlr);
|
|
return s;
|
|
}
|
|
|
|
/*
|
|
* halt condition was cleared on the endpoint. update our toggles.
|
|
*/
|
|
static void
|
|
clrhalt(Ep *ep)
|
|
{
|
|
Qio *io;
|
|
|
|
ep->clrhalt = 0;
|
|
coherence();
|
|
switch(ep->ttype){
|
|
case Tintr:
|
|
case Tbulk:
|
|
io = ep->aux;
|
|
if(ep->mode != OREAD){
|
|
qlock(&io[OWRITE]);
|
|
io[OWRITE].toggle = Tddata0;
|
|
deprint("ep clrhalt for io %#p\n", io+OWRITE);
|
|
qunlock(&io[OWRITE]);
|
|
}
|
|
if(ep->mode != OWRITE){
|
|
qlock(&io[OREAD]);
|
|
io[OREAD].toggle = Tddata0;
|
|
deprint("ep clrhalt for io %#p\n", io+OREAD);
|
|
qunlock(&io[OREAD]);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
xdump(char* pref, void *qh)
|
|
{
|
|
int i;
|
|
ulong *u;
|
|
|
|
u = qh;
|
|
print("%s %#p:", pref, u);
|
|
for(i = 0; i < 16; i++)
|
|
if((i%4) == 0)
|
|
print("\n %#8.8ulx", u[i]);
|
|
else
|
|
print(" %#8.8ulx", u[i]);
|
|
print("\n");
|
|
}
|
|
|
|
static long
|
|
episohscpy(Ctlr *ctlr, Ep *ep, Isoio* iso, uchar *b, long count)
|
|
{
|
|
int nr;
|
|
long tot;
|
|
Itd *tdu;
|
|
|
|
for(tot = 0; iso->tdi != iso->tdu && tot < count; tot += nr){
|
|
tdu = iso->tdu;
|
|
if(itdactive(tdu))
|
|
break;
|
|
nr = tdu->ndata;
|
|
if(tot + nr > count)
|
|
nr = count - tot;
|
|
if(nr == 0)
|
|
print("ehci: ep%d.%d: too many polls\n",
|
|
ep->dev->nb, ep->nb);
|
|
else{
|
|
iunlock(ctlr); /* We could page fault here */
|
|
memmove(b+tot, tdu->data, nr);
|
|
ilock(ctlr);
|
|
if(nr < tdu->ndata)
|
|
memmove(tdu->data, tdu->data+nr, tdu->ndata - nr);
|
|
tdu->ndata -= nr;
|
|
coherence();
|
|
}
|
|
if(tdu->ndata == 0){
|
|
itdinit(iso, tdu);
|
|
iso->tdu = tdu->next;
|
|
}
|
|
}
|
|
return tot;
|
|
}
|
|
|
|
static long
|
|
episofscpy(Ctlr *ctlr, Ep *ep, Isoio* iso, uchar *b, long count)
|
|
{
|
|
int nr;
|
|
long tot;
|
|
Sitd *stdu;
|
|
|
|
for(tot = 0; iso->stdi != iso->stdu && tot < count; tot += nr){
|
|
stdu = iso->stdu;
|
|
if(stdu->csw & Stdactive){
|
|
diprint("ehci: episoread: %#p tdu active\n", iso);
|
|
break;
|
|
}
|
|
nr = stdu->ndata;
|
|
if(tot + nr > count)
|
|
nr = count - tot;
|
|
if(nr == 0)
|
|
print("ehci: ep%d.%d: too many polls\n",
|
|
ep->dev->nb, ep->nb);
|
|
else{
|
|
iunlock(ctlr); /* We could page fault here */
|
|
memmove(b+tot, stdu->data, nr);
|
|
ilock(ctlr);
|
|
if(nr < stdu->ndata)
|
|
memmove(stdu->data, stdu->data+nr,
|
|
stdu->ndata - nr);
|
|
stdu->ndata -= nr;
|
|
coherence();
|
|
}
|
|
if(stdu->ndata == 0){
|
|
sitdinit(iso, stdu);
|
|
iso->stdu = stdu->next;
|
|
}
|
|
}
|
|
return tot;
|
|
}
|
|
|
|
static long
|
|
episoread(Ep *ep, Isoio *iso, void *a, long count)
|
|
{
|
|
Ctlr *ctlr;
|
|
uchar *b;
|
|
long tot;
|
|
|
|
iso->debug = ep->debug;
|
|
diprint("ehci: episoread: %#p ep%d.%d\n", iso, ep->dev->nb, ep->nb);
|
|
|
|
b = a;
|
|
ctlr = ep->hp->aux;
|
|
eqlock(iso);
|
|
if(waserror()){
|
|
qunlock(iso);
|
|
nexterror();
|
|
}
|
|
iso->err = nil;
|
|
iso->nerrs = 0;
|
|
ilock(ctlr);
|
|
if(iso->state == Qclose){
|
|
iunlock(ctlr);
|
|
error(iso->err ? iso->err : Eio);
|
|
}
|
|
iso->state = Qrun;
|
|
coherence();
|
|
while(isocanread(iso) == 0){
|
|
iunlock(ctlr);
|
|
diprint("ehci: episoread: %#p sleep\n", iso);
|
|
if(waserror()){
|
|
if(iso->err == nil)
|
|
iso->err = "I/O timed out";
|
|
ilock(ctlr);
|
|
break;
|
|
}
|
|
tsleep(iso, isocanread, iso, ep->tmout);
|
|
poperror();
|
|
ilock(ctlr);
|
|
}
|
|
if(iso->state == Qclose){
|
|
iunlock(ctlr);
|
|
error(iso->err ? iso->err : Eio);
|
|
}
|
|
iso->state = Qdone;
|
|
coherence();
|
|
assert(iso->tdu != iso->tdi);
|
|
|
|
if(iso->hs != 0)
|
|
tot = episohscpy(ctlr, ep, iso, b, count);
|
|
else
|
|
tot = episofscpy(ctlr, ep, iso, b, count);
|
|
iunlock(ctlr);
|
|
qunlock(iso);
|
|
poperror();
|
|
diprint("uhci: episoread: %#p %uld bytes err '%s'\n", iso, tot, iso->err);
|
|
if(iso->err != nil)
|
|
error(iso->err);
|
|
return tot;
|
|
}
|
|
|
|
/*
|
|
* iso->tdu is the next place to put data. When it gets full
|
|
* it is activated and tdu advanced.
|
|
*/
|
|
static long
|
|
putsamples(Isoio *iso, uchar *b, long count)
|
|
{
|
|
long tot, n;
|
|
|
|
for(tot = 0; isocanwrite(iso) && tot < count; tot += n){
|
|
n = count-tot;
|
|
if(iso->hs != 0){
|
|
if(n > iso->tdu->mdata - iso->nleft)
|
|
n = iso->tdu->mdata - iso->nleft;
|
|
memmove(iso->tdu->data + iso->nleft, b + tot, n);
|
|
coherence();
|
|
iso->nleft += n;
|
|
if(iso->nleft == iso->tdu->mdata){
|
|
itdinit(iso, iso->tdu);
|
|
iso->nleft = 0;
|
|
iso->tdu = iso->tdu->next;
|
|
}
|
|
}else{
|
|
if(n > iso->stdu->mdata - iso->nleft)
|
|
n = iso->stdu->mdata - iso->nleft;
|
|
memmove(iso->stdu->data + iso->nleft, b + tot, n);
|
|
coherence();
|
|
iso->nleft += n;
|
|
if(iso->nleft == iso->stdu->mdata){
|
|
sitdinit(iso, iso->stdu);
|
|
iso->nleft = 0;
|
|
iso->stdu = iso->stdu->next;
|
|
}
|
|
}
|
|
}
|
|
return tot;
|
|
}
|
|
|
|
/*
|
|
* Queue data for writing and return error status from
|
|
* last writes done, to maintain buffered data.
|
|
*/
|
|
static long
|
|
episowrite(Ep *ep, Isoio *iso, void *a, long count)
|
|
{
|
|
Ctlr *ctlr;
|
|
uchar *b;
|
|
int tot, nw;
|
|
char *err;
|
|
|
|
iso->delay = ep->sampledelay * ep->samplesz;
|
|
iso->debug = ep->debug;
|
|
diprint("ehci: episowrite: %#p ep%d.%d\n", iso, ep->dev->nb, ep->nb);
|
|
|
|
ctlr = ep->hp->aux;
|
|
eqlock(iso);
|
|
if(waserror()){
|
|
qunlock(iso);
|
|
nexterror();
|
|
}
|
|
ilock(ctlr);
|
|
if(iso->state == Qclose){
|
|
iunlock(ctlr);
|
|
error(iso->err ? iso->err : Eio);
|
|
}
|
|
iso->state = Qrun;
|
|
coherence();
|
|
b = a;
|
|
for(tot = 0; tot < count; tot += nw){
|
|
while(isocanwrite(iso) == 0){
|
|
iunlock(ctlr);
|
|
diprint("ehci: episowrite: %#p sleep\n", iso);
|
|
if(waserror()){
|
|
if(iso->err == nil)
|
|
iso->err = "I/O timed out";
|
|
ilock(ctlr);
|
|
break;
|
|
}
|
|
tsleep(iso, isocanwrite, iso, ep->tmout);
|
|
poperror();
|
|
ilock(ctlr);
|
|
}
|
|
err = iso->err;
|
|
iso->err = nil;
|
|
if(iso->state == Qclose || err != nil){
|
|
iunlock(ctlr);
|
|
error(err ? err : Eio);
|
|
}
|
|
if(iso->state != Qrun)
|
|
panic("episowrite: iso not running");
|
|
iunlock(ctlr); /* We could page fault here */
|
|
nw = putsamples(iso, b+tot, count-tot);
|
|
ilock(ctlr);
|
|
}
|
|
while(isodelay(iso) == 0){
|
|
iunlock(ctlr);
|
|
sleep(iso, isodelay, iso);
|
|
ilock(ctlr);
|
|
}
|
|
if(iso->state != Qclose)
|
|
iso->state = Qdone;
|
|
iunlock(ctlr);
|
|
err = iso->err; /* in case it failed early */
|
|
iso->err = nil;
|
|
qunlock(iso);
|
|
poperror();
|
|
if(err != nil)
|
|
error(err);
|
|
diprint("ehci: episowrite: %#p %d bytes\n", iso, tot);
|
|
return tot;
|
|
}
|
|
|
|
static int
|
|
nexttoggle(int toggle, int count, int maxpkt)
|
|
{
|
|
int np;
|
|
|
|
np = count / maxpkt;
|
|
if(np == 0)
|
|
np = 1;
|
|
if((np % 2) == 0)
|
|
return toggle;
|
|
if(toggle == Tddata1)
|
|
return Tddata0;
|
|
else
|
|
return Tddata1;
|
|
}
|
|
|
|
static Td*
|
|
epgettd(Qio *io, int flags, void *a, int count, int maxpkt)
|
|
{
|
|
Td *td;
|
|
ulong pa;
|
|
int i;
|
|
|
|
if(count > Tdmaxpkt)
|
|
panic("ehci: epgettd: too many bytes");
|
|
td = tdalloc();
|
|
td->csw = flags | io->toggle | io->tok | count << Tdlenshift |
|
|
Tderr2 | Tderr1;
|
|
coherence();
|
|
|
|
/*
|
|
* use the space wasted by alignment as an
|
|
* embedded buffer if count bytes fit in there.
|
|
*/
|
|
assert(Align > sizeof(Td));
|
|
if(count <= Align - sizeof(Td)){
|
|
td->data = td->sbuff;
|
|
td->buff = nil;
|
|
}else
|
|
td->data = td->buff = smalloc(Tdmaxpkt);
|
|
|
|
pa = PADDR(td->data);
|
|
for(i = 0; i < nelem(td->buffer); i++){
|
|
td->buffer[i] = pa;
|
|
if(i > 0)
|
|
td->buffer[i] &= ~0xFFF;
|
|
pa += 0x1000;
|
|
}
|
|
td->ndata = count;
|
|
if(a != nil && count > 0)
|
|
memmove(td->data, a, count);
|
|
coherence();
|
|
io->toggle = nexttoggle(io->toggle, count, maxpkt);
|
|
coherence();
|
|
return td;
|
|
}
|
|
|
|
/*
|
|
* Try to get them idle
|
|
*/
|
|
static void
|
|
aborttds(Qh *qh)
|
|
{
|
|
Td *td;
|
|
|
|
qh->state = Qdone;
|
|
coherence();
|
|
if(qh->sched >= 0 && (qh->eps0 & Qhspeedmask) != Qhhigh)
|
|
qh->eps0 |= Qhint; /* inactivate on next pass */
|
|
coherence();
|
|
for(td = qh->tds; td != nil; td = td->next){
|
|
if(td->csw & Tdactive)
|
|
td->ndata = 0;
|
|
td->csw |= Tdhalt;
|
|
coherence();
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Some controllers do not post the usb/error interrupt after
|
|
* the work has been done. It seems that we must poll for them.
|
|
*/
|
|
static int
|
|
workpending(void *a)
|
|
{
|
|
Ctlr *ctlr;
|
|
|
|
ctlr = a;
|
|
return ctlr->nreqs > 0;
|
|
}
|
|
|
|
static void
|
|
ehcipoll(void* a)
|
|
{
|
|
Hci *hp;
|
|
Ctlr *ctlr;
|
|
Poll *poll;
|
|
int i;
|
|
|
|
hp = a;
|
|
ctlr = hp->aux;
|
|
poll = &ctlr->poll;
|
|
for(;;){
|
|
if(ctlr->nreqs == 0){
|
|
if(0)ddprint("ehcipoll %#p sleep\n", ctlr->capio);
|
|
sleep(poll, workpending, ctlr);
|
|
if(0)ddprint("ehcipoll %#p awaken\n", ctlr->capio);
|
|
}
|
|
for(i = 0; i < 16 && ctlr->nreqs > 0; i++)
|
|
if(ehciintr(hp) == 0)
|
|
break;
|
|
do{
|
|
tsleep(&up->sleep, return0, 0, 1);
|
|
ehciintr(hp);
|
|
}while(ctlr->nreqs > 0);
|
|
}
|
|
}
|
|
|
|
static void
|
|
pollcheck(Hci *hp)
|
|
{
|
|
Ctlr *ctlr;
|
|
Poll *poll;
|
|
|
|
ctlr = hp->aux;
|
|
poll = &ctlr->poll;
|
|
|
|
if(poll->must != 0 && poll->does == 0){
|
|
lock(poll);
|
|
if(poll->must != 0 && poll->does == 0){
|
|
poll->does++;
|
|
print("ehci %#p: polling\n", ctlr->capio);
|
|
kproc("ehcipoll", ehcipoll, hp);
|
|
}
|
|
unlock(poll);
|
|
}
|
|
}
|
|
|
|
static int
|
|
epiodone(void *a)
|
|
{
|
|
Qh *qh;
|
|
|
|
qh = a;
|
|
return qh->state != Qrun;
|
|
}
|
|
|
|
static void
|
|
epiowait(Hci *hp, Qio *io, int tmout, ulong load)
|
|
{
|
|
Qh *qh;
|
|
int timedout;
|
|
Ctlr *ctlr;
|
|
|
|
ctlr = hp->aux;
|
|
qh = io->qh;
|
|
ddqprint("ehci io %#p sleep on qh %#p state %s\n",
|
|
io, qh, qhsname[qh->state]);
|
|
timedout = 0;
|
|
if(waserror()){
|
|
dqprint("ehci io %#p qh %#p timed out\n", io, qh);
|
|
timedout++;
|
|
}else{
|
|
if(tmout == 0)
|
|
sleep(io, epiodone, qh);
|
|
else
|
|
tsleep(io, epiodone, qh, tmout);
|
|
poperror();
|
|
}
|
|
|
|
ilock(ctlr);
|
|
/* Are we missing interrupts? */
|
|
if(qh->state == Qrun){
|
|
iunlock(ctlr);
|
|
ehciintr(hp);
|
|
ilock(ctlr);
|
|
if(qh->state == Qdone){
|
|
dqprint("ehci %#p: polling required\n", ctlr->capio);
|
|
ctlr->poll.must = 1;
|
|
pollcheck(hp);
|
|
}
|
|
}
|
|
|
|
if(qh->state == Qrun){
|
|
dqprint("ehci io %#p qh %#p timed out (no intr?)\n", io, qh);
|
|
timedout = 1;
|
|
}else if(qh->state != Qdone && qh->state != Qclose)
|
|
panic("ehci: epio: queue state %d", qh->state);
|
|
if(timedout){
|
|
aborttds(io->qh);
|
|
io->err = "request timed out";
|
|
iunlock(ctlr);
|
|
if(!waserror()){
|
|
tsleep(&up->sleep, return0, 0, Abortdelay);
|
|
poperror();
|
|
}
|
|
ilock(ctlr);
|
|
}
|
|
if(qh->state != Qclose)
|
|
qh->state = Qidle;
|
|
coherence();
|
|
qhlinktd(qh, nil);
|
|
ctlr->load -= load;
|
|
ctlr->nreqs--;
|
|
iunlock(ctlr);
|
|
}
|
|
|
|
/*
|
|
* Non iso I/O.
|
|
* To make it work for control transfers, the caller may
|
|
* lock the Qio for the entire control transfer.
|
|
*/
|
|
static long
|
|
epio(Ep *ep, Qio *io, void *a, long count, int mustlock)
|
|
{
|
|
int saved, ntds, tmout;
|
|
long n, tot;
|
|
ulong load;
|
|
char *err;
|
|
char buf[128];
|
|
uchar *c;
|
|
Ctlr *ctlr;
|
|
Qh* qh;
|
|
Td *td, *ltd, *td0, *ntd;
|
|
|
|
qh = io->qh;
|
|
ctlr = ep->hp->aux;
|
|
io->debug = ep->debug;
|
|
tmout = ep->tmout;
|
|
ddeprint("epio: %s ep%d.%d io %#p count %ld load %uld\n",
|
|
io->tok == Tdtokin ? "in" : "out",
|
|
ep->dev->nb, ep->nb, io, count, ctlr->load);
|
|
if((ehcidebug > 1 || ep->debug > 1) && io->tok != Tdtokin){
|
|
seprintdata(buf, buf+sizeof(buf), a, count);
|
|
print("echi epio: user data: %s\n", buf);
|
|
}
|
|
if(mustlock){
|
|
eqlock(io);
|
|
if(waserror()){
|
|
qunlock(io);
|
|
nexterror();
|
|
}
|
|
}
|
|
io->err = nil;
|
|
ilock(ctlr);
|
|
if(qh->state == Qclose){ /* Tds released by cancelio */
|
|
iunlock(ctlr);
|
|
error(io->err ? io->err : Eio);
|
|
}
|
|
if(qh->state != Qidle)
|
|
panic("epio: qh not idle");
|
|
qh->state = Qinstall;
|
|
iunlock(ctlr);
|
|
|
|
c = a;
|
|
td0 = ltd = nil;
|
|
load = tot = 0;
|
|
do{
|
|
n = (Tdmaxpkt / ep->maxpkt) * ep->maxpkt;
|
|
if(count-tot < n)
|
|
n = count-tot;
|
|
if(c != nil && io->tok != Tdtokin)
|
|
td = epgettd(io, Tdactive, c+tot, n, ep->maxpkt);
|
|
else
|
|
td = epgettd(io, Tdactive, nil, n, ep->maxpkt);
|
|
if(td0 == nil)
|
|
td0 = td;
|
|
else
|
|
tdlinktd(ltd, td);
|
|
ltd = td;
|
|
tot += n;
|
|
load += ep->load;
|
|
}while(tot < count);
|
|
if(td0 == nil || ltd == nil)
|
|
panic("epio: no td");
|
|
|
|
ltd->csw |= Tdioc; /* the last one interrupts */
|
|
coherence();
|
|
|
|
ddeprint("ehci: load %uld ctlr load %uld\n", load, ctlr->load);
|
|
if(ehcidebug > 1 || ep->debug > 1)
|
|
dumptd(td0, "epio: put: ");
|
|
|
|
ilock(ctlr);
|
|
if(qh->state != Qclose){
|
|
io->iotime = TK2MS(MACHP(0)->ticks);
|
|
qh->state = Qrun;
|
|
coherence();
|
|
qhlinktd(qh, td0);
|
|
ctlr->nreqs++;
|
|
ctlr->load += load;
|
|
}
|
|
iunlock(ctlr);
|
|
|
|
if(ctlr->poll.does)
|
|
wakeup(&ctlr->poll);
|
|
|
|
epiowait(ep->hp, io, tmout, load);
|
|
if(ehcidebug > 1 || ep->debug > 1){
|
|
dumptd(td0, "epio: got: ");
|
|
qhdump(qh);
|
|
}
|
|
|
|
tot = 0;
|
|
c = a;
|
|
saved = 0;
|
|
ntds = 0;
|
|
for(td = td0; td != nil; td = ntd){
|
|
ntds++;
|
|
/*
|
|
* Use td tok, not io tok, because of setup packets.
|
|
* Also, if the Td was stalled or active (previous Td
|
|
* was a short packet), we must save the toggle as it is.
|
|
*/
|
|
if(td->csw & (Tdhalt|Tdactive)){
|
|
if(saved++ == 0) {
|
|
io->toggle = td->csw & Tddata1;
|
|
coherence();
|
|
}
|
|
}else{
|
|
tot += td->ndata;
|
|
if(c != nil && (td->csw & Tdtok) == Tdtokin && td->ndata > 0){
|
|
memmove(c, td->data, td->ndata);
|
|
c += td->ndata;
|
|
}
|
|
}
|
|
ntd = td->next;
|
|
tdfree(td);
|
|
}
|
|
err = io->err;
|
|
if(mustlock){
|
|
qunlock(io);
|
|
poperror();
|
|
}
|
|
ddeprint("epio: io %#p: %d tds: return %ld err '%s'\n",
|
|
io, ntds, tot, err);
|
|
if(err == Estalled)
|
|
return 0; /* that's our convention */
|
|
if(err != nil)
|
|
error(err);
|
|
if(tot < 0)
|
|
error(Eio);
|
|
return tot;
|
|
}
|
|
|
|
static long
|
|
epread(Ep *ep, void *a, long count)
|
|
{
|
|
Ctlio *cio;
|
|
Qio *io;
|
|
Isoio *iso;
|
|
char buf[160];
|
|
ulong delta;
|
|
|
|
ddeprint("ehci: epread\n");
|
|
if(ep->aux == nil)
|
|
panic("epread: not open");
|
|
|
|
pollcheck(ep->hp);
|
|
|
|
switch(ep->ttype){
|
|
case Tctl:
|
|
cio = ep->aux;
|
|
eqlock(cio);
|
|
if(waserror()){
|
|
qunlock(cio);
|
|
nexterror();
|
|
}
|
|
ddeprint("epread ctl ndata %d\n", cio->ndata);
|
|
if(cio->ndata < 0)
|
|
error("request expected");
|
|
else if(cio->ndata == 0){
|
|
cio->ndata = -1;
|
|
count = 0;
|
|
}else{
|
|
if(count > cio->ndata)
|
|
count = cio->ndata;
|
|
if(count > 0)
|
|
memmove(a, cio->data, count);
|
|
/* BUG for big transfers */
|
|
free(cio->data);
|
|
cio->data = nil;
|
|
cio->ndata = 0; /* signal EOF next time */
|
|
}
|
|
qunlock(cio);
|
|
poperror();
|
|
if(ehcidebug>1 || ep->debug){
|
|
seprintdata(buf, buf+sizeof(buf), a, count);
|
|
print("epread: %s\n", buf);
|
|
}
|
|
return count;
|
|
case Tbulk:
|
|
io = ep->aux;
|
|
if(ep->clrhalt)
|
|
clrhalt(ep);
|
|
return epio(ep, &io[OREAD], a, count, 1);
|
|
case Tintr:
|
|
io = ep->aux;
|
|
delta = TK2MS(MACHP(0)->ticks) - io[OREAD].iotime + 1;
|
|
if(delta < ep->pollival / 2)
|
|
tsleep(&up->sleep, return0, 0, ep->pollival/2 - delta);
|
|
if(ep->clrhalt)
|
|
clrhalt(ep);
|
|
return epio(ep, &io[OREAD], a, count, 1);
|
|
case Tiso:
|
|
iso = ep->aux;
|
|
return episoread(ep, iso, a, count);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Control transfers are one setup write (data0)
|
|
* plus zero or more reads/writes (data1, data0, ...)
|
|
* plus a final write/read with data1 to ack.
|
|
* For both host to device and device to host we perform
|
|
* the entire transfer when the user writes the request,
|
|
* and keep any data read from the device for a later read.
|
|
* We call epio three times instead of placing all Tds at
|
|
* the same time because doing so leads to crc/tmout errors
|
|
* for some devices.
|
|
* Upon errors on the data phase we must still run the status
|
|
* phase or the device may cease responding in the future.
|
|
*/
|
|
static long
|
|
epctlio(Ep *ep, Ctlio *cio, void *a, long count)
|
|
{
|
|
uchar *c;
|
|
long len;
|
|
|
|
ddeprint("epctlio: cio %#p ep%d.%d count %ld\n",
|
|
cio, ep->dev->nb, ep->nb, count);
|
|
if(count < Rsetuplen)
|
|
error("short usb comand");
|
|
eqlock(cio);
|
|
free(cio->data);
|
|
cio->data = nil;
|
|
cio->ndata = 0;
|
|
if(waserror()){
|
|
free(cio->data);
|
|
cio->data = nil;
|
|
cio->ndata = 0;
|
|
qunlock(cio);
|
|
nexterror();
|
|
}
|
|
|
|
/* set the address if unset and out of configuration state */
|
|
if(ep->dev->state != Dconfig && ep->dev->state != Dreset)
|
|
if(cio->usbid == 0){
|
|
cio->usbid = (ep->nb&Epmax) << 7 | ep->dev->nb&Devmax;
|
|
coherence();
|
|
qhsetaddr(cio->qh, cio->usbid);
|
|
}
|
|
/* adjust maxpkt if the user has learned a different one */
|
|
if(qhmaxpkt(cio->qh) != ep->maxpkt)
|
|
qhsetmaxpkt(cio->qh, ep->maxpkt);
|
|
c = a;
|
|
cio->tok = Tdtoksetup;
|
|
cio->toggle = Tddata0;
|
|
coherence();
|
|
if(epio(ep, cio, a, Rsetuplen, 0) < Rsetuplen)
|
|
error(Eio);
|
|
a = c + Rsetuplen;
|
|
count -= Rsetuplen;
|
|
|
|
cio->toggle = Tddata1;
|
|
if(c[Rtype] & Rd2h){
|
|
cio->tok = Tdtokin;
|
|
len = GET2(c+Rcount);
|
|
if(len <= 0)
|
|
error("bad length in d2h request");
|
|
if(len > Maxctllen)
|
|
error("d2h data too large to fit in ehci");
|
|
a = cio->data = smalloc(len+1);
|
|
}else{
|
|
cio->tok = Tdtokout;
|
|
len = count;
|
|
}
|
|
coherence();
|
|
if(len > 0)
|
|
if(waserror())
|
|
len = -1;
|
|
else{
|
|
len = epio(ep, cio, a, len, 0);
|
|
poperror();
|
|
}
|
|
if(c[Rtype] & Rd2h){
|
|
count = Rsetuplen;
|
|
cio->ndata = len;
|
|
cio->tok = Tdtokout;
|
|
}else{
|
|
if(len < 0)
|
|
count = -1;
|
|
else
|
|
count = Rsetuplen + len;
|
|
cio->tok = Tdtokin;
|
|
}
|
|
cio->toggle = Tddata1;
|
|
coherence();
|
|
epio(ep, cio, nil, 0, 0);
|
|
qunlock(cio);
|
|
poperror();
|
|
ddeprint("epctlio cio %#p return %ld\n", cio, count);
|
|
return count;
|
|
}
|
|
|
|
static long
|
|
epwrite(Ep *ep, void *a, long count)
|
|
{
|
|
Qio *io;
|
|
Ctlio *cio;
|
|
Isoio *iso;
|
|
ulong delta;
|
|
|
|
pollcheck(ep->hp);
|
|
|
|
ddeprint("ehci: epwrite ep%d.%d\n", ep->dev->nb, ep->nb);
|
|
if(ep->aux == nil)
|
|
panic("ehci: epwrite: not open");
|
|
switch(ep->ttype){
|
|
case Tctl:
|
|
cio = ep->aux;
|
|
return epctlio(ep, cio, a, count);
|
|
case Tbulk:
|
|
io = ep->aux;
|
|
if(ep->clrhalt)
|
|
clrhalt(ep);
|
|
return epio(ep, &io[OWRITE], a, count, 1);
|
|
case Tintr:
|
|
io = ep->aux;
|
|
delta = TK2MS(MACHP(0)->ticks) - io[OWRITE].iotime + 1;
|
|
if(delta < ep->pollival)
|
|
tsleep(&up->sleep, return0, 0, ep->pollival - delta);
|
|
if(ep->clrhalt)
|
|
clrhalt(ep);
|
|
return epio(ep, &io[OWRITE], a, count, 1);
|
|
case Tiso:
|
|
iso = ep->aux;
|
|
return episowrite(ep, iso, a, count);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static void
|
|
isofsinit(Ep *ep, Isoio *iso)
|
|
{
|
|
long left;
|
|
Sitd *td, *ltd;
|
|
int i;
|
|
ulong frno;
|
|
|
|
left = 0;
|
|
ltd = nil;
|
|
frno = iso->td0frno;
|
|
for(i = 0; i < iso->nframes; i++){
|
|
td = sitdalloc();
|
|
td->data = iso->data + i * ep->maxpkt;
|
|
td->epc = ep->dev->port << Stdportshift;
|
|
td->epc |= ep->dev->hub << Stdhubshift;
|
|
td->epc |= ep->nb << Stdepshift;
|
|
td->epc |= ep->dev->nb << Stddevshift;
|
|
td->mfs = 034 << Stdscmshift | 1 << Stdssmshift;
|
|
if(ep->mode == OREAD){
|
|
td->epc |= Stdin;
|
|
td->mdata = ep->maxpkt;
|
|
}else{
|
|
td->mdata = (ep->hz+left) * ep->pollival / 1000;
|
|
td->mdata *= ep->samplesz;
|
|
left = (ep->hz+left) * ep->pollival % 1000;
|
|
if(td->mdata > ep->maxpkt){
|
|
print("ehci: ep%d.%d: size > maxpkt\n",
|
|
ep->dev->nb, ep->nb);
|
|
print("size = %ld max = %ld\n",
|
|
td->mdata,ep->maxpkt);
|
|
td->mdata = ep->maxpkt;
|
|
}
|
|
}
|
|
coherence();
|
|
|
|
iso->sitdps[frno] = td;
|
|
coherence();
|
|
sitdinit(iso, td);
|
|
if(ltd != nil)
|
|
ltd->next = td;
|
|
ltd = td;
|
|
frno = TRUNC(frno+ep->pollival, Nisoframes);
|
|
}
|
|
ltd->next = iso->sitdps[iso->td0frno];
|
|
coherence();
|
|
}
|
|
|
|
static void
|
|
isohsinit(Ep *ep, Isoio *iso)
|
|
{
|
|
int ival, p;
|
|
long left;
|
|
ulong frno, i, pa;
|
|
Itd *ltd, *td;
|
|
|
|
iso->hs = 1;
|
|
ival = 1;
|
|
if(ep->pollival > 8)
|
|
ival = ep->pollival/8;
|
|
left = 0;
|
|
ltd = nil;
|
|
frno = iso->td0frno;
|
|
for(i = 0; i < iso->nframes; i++){
|
|
td = itdalloc();
|
|
td->data = iso->data + i * 8 * iso->maxsize;
|
|
pa = PADDR(td->data) & ~0xFFF;
|
|
for(p = 0; p < 8; p++)
|
|
td->buffer[i] = pa + p * 0x1000;
|
|
td->buffer[0] = PADDR(iso->data) & ~0xFFF |
|
|
ep->nb << Itdepshift | ep->dev->nb << Itddevshift;
|
|
if(ep->mode == OREAD)
|
|
td->buffer[1] |= Itdin;
|
|
else
|
|
td->buffer[1] |= Itdout;
|
|
td->buffer[1] |= ep->maxpkt << Itdmaxpktshift;
|
|
td->buffer[2] |= ep->ntds << Itdntdsshift;
|
|
|
|
if(ep->mode == OREAD)
|
|
td->mdata = 8 * iso->maxsize;
|
|
else{
|
|
td->mdata = (ep->hz + left) * ep->pollival / 1000;
|
|
td->mdata *= ep->samplesz;
|
|
left = (ep->hz + left) * ep->pollival % 1000;
|
|
}
|
|
coherence();
|
|
iso->itdps[frno] = td;
|
|
coherence();
|
|
itdinit(iso, td);
|
|
if(ltd != nil)
|
|
ltd->next = td;
|
|
ltd = td;
|
|
frno = TRUNC(frno + ival, Nisoframes);
|
|
}
|
|
}
|
|
|
|
static void
|
|
isoopen(Ctlr *ctlr, Ep *ep)
|
|
{
|
|
int ival; /* pollival in ms */
|
|
int tpf; /* tds per frame */
|
|
int i, n, w, woff;
|
|
ulong frno;
|
|
Isoio *iso;
|
|
|
|
iso = ep->aux;
|
|
switch(ep->mode){
|
|
case OREAD:
|
|
iso->tok = Tdtokin;
|
|
break;
|
|
case OWRITE:
|
|
iso->tok = Tdtokout;
|
|
break;
|
|
default:
|
|
error("iso i/o is half-duplex");
|
|
}
|
|
iso->usbid = ep->nb << 7 | ep->dev->nb & Devmax;
|
|
iso->state = Qidle;
|
|
coherence();
|
|
iso->debug = ep->debug;
|
|
ival = ep->pollival;
|
|
tpf = 1;
|
|
if(ep->dev->speed == Highspeed){
|
|
tpf = 8;
|
|
if(ival <= 8)
|
|
ival = 1;
|
|
else
|
|
ival /= 8;
|
|
}
|
|
assert(ival != 0);
|
|
iso->nframes = Nisoframes / ival;
|
|
if(iso->nframes < 3)
|
|
error("uhci isoopen bug"); /* we need at least 3 tds */
|
|
iso->maxsize = ep->ntds * ep->maxpkt;
|
|
if(ctlr->load + ep->load > 800)
|
|
print("usb: ehci: bandwidth may be exceeded\n");
|
|
ilock(ctlr);
|
|
ctlr->load += ep->load;
|
|
ctlr->isoload += ep->load;
|
|
ctlr->nreqs++;
|
|
dprint("ehci: load %uld isoload %uld\n", ctlr->load, ctlr->isoload);
|
|
diprint("iso nframes %d pollival %uld ival %d maxpkt %uld ntds %d\n",
|
|
iso->nframes, ep->pollival, ival, ep->maxpkt, ep->ntds);
|
|
iunlock(ctlr);
|
|
if(ctlr->poll.does)
|
|
wakeup(&ctlr->poll);
|
|
|
|
/*
|
|
* From here on this cannot raise errors
|
|
* unless we catch them and release here all memory allocated.
|
|
*/
|
|
assert(ep->maxpkt > 0 && ep->ntds > 0 && ep->ntds < 4);
|
|
assert(ep->maxpkt <= 1024);
|
|
iso->tdps = smalloc(sizeof(uintptr) * Nisoframes);
|
|
iso->data = smalloc(iso->nframes * tpf * ep->ntds * ep->maxpkt);
|
|
iso->td0frno = TRUNC(ctlr->opio->frno + 10, Nisoframes);
|
|
/* read: now; write: 1s ahead */
|
|
|
|
if(ep->dev->speed == Highspeed)
|
|
isohsinit(ep, iso);
|
|
else
|
|
isofsinit(ep, iso);
|
|
iso->tdu = iso->tdi = iso->itdps[iso->td0frno];
|
|
iso->stdu = iso->stdi = iso->sitdps[iso->td0frno];
|
|
coherence();
|
|
|
|
ilock(ctlr);
|
|
frno = iso->td0frno;
|
|
for(i = 0; i < iso->nframes; i++){
|
|
*iso->tdps[frno] = ctlr->frames[frno];
|
|
frno = TRUNC(frno+ival, Nisoframes);
|
|
}
|
|
|
|
/*
|
|
* Iso uses a virtual frame window of Nisoframes, and we must
|
|
* fill the actual ctlr frame array by placing ctlr->nframes/Nisoframes
|
|
* copies of the window in the frame array.
|
|
*/
|
|
assert(ctlr->nframes >= Nisoframes && Nisoframes >= iso->nframes);
|
|
assert(Nisoframes >= Nintrleafs);
|
|
n = ctlr->nframes / Nisoframes;
|
|
for(w = 0; w < n; w++){
|
|
frno = iso->td0frno;
|
|
woff = w * Nisoframes;
|
|
for(i = 0; i < iso->nframes ; i++){
|
|
assert(woff+frno < ctlr->nframes);
|
|
assert(iso->tdps[frno] != nil);
|
|
if(ep->dev->speed == Highspeed)
|
|
ctlr->frames[woff+frno] = PADDR(iso->tdps[frno])
|
|
|Litd;
|
|
else
|
|
ctlr->frames[woff+frno] = PADDR(iso->tdps[frno])
|
|
|Lsitd;
|
|
coherence();
|
|
frno = TRUNC(frno+ep->pollival, Nisoframes);
|
|
}
|
|
}
|
|
coherence();
|
|
iso->next = ctlr->iso;
|
|
ctlr->iso = iso;
|
|
coherence();
|
|
iso->state = Qdone;
|
|
iunlock(ctlr);
|
|
if(ehcidebug > 1 || iso->debug >1)
|
|
isodump(iso, 0);
|
|
}
|
|
|
|
/*
|
|
* Allocate the endpoint and set it up for I/O
|
|
* in the controller. This must follow what's said
|
|
* in Ep regarding configuration, including perhaps
|
|
* the saved toggles (saved on a previous close of
|
|
* the endpoint data file by epclose).
|
|
*/
|
|
static void
|
|
epopen(Ep *ep)
|
|
{
|
|
Ctlr *ctlr;
|
|
Ctlio *cio;
|
|
Qio *io;
|
|
int usbid;
|
|
|
|
ctlr = ep->hp->aux;
|
|
deprint("ehci: epopen ep%d.%d\n", ep->dev->nb, ep->nb);
|
|
if(ep->aux != nil)
|
|
panic("ehci: epopen called with open ep");
|
|
if(waserror()){
|
|
free(ep->aux);
|
|
ep->aux = nil;
|
|
nexterror();
|
|
}
|
|
switch(ep->ttype){
|
|
case Tnone:
|
|
error("endpoint not configured");
|
|
case Tiso:
|
|
ep->aux = smalloc(sizeof(Isoio));
|
|
isoopen(ctlr, ep);
|
|
break;
|
|
case Tctl:
|
|
cio = ep->aux = smalloc(sizeof(Ctlio));
|
|
cio->debug = ep->debug;
|
|
cio->ndata = -1;
|
|
cio->data = nil;
|
|
if(ep->dev->isroot != 0 && ep->nb == 0) /* root hub */
|
|
break;
|
|
cio->qh = qhalloc(ctlr, ep, cio, "epc");
|
|
break;
|
|
case Tbulk:
|
|
ep->pollival = 1; /* assume this; doesn't really matter */
|
|
/* and fall... */
|
|
case Tintr:
|
|
io = ep->aux = smalloc(sizeof(Qio)*2);
|
|
io[OREAD].debug = io[OWRITE].debug = ep->debug;
|
|
usbid = (ep->nb&Epmax) << 7 | ep->dev->nb &Devmax;
|
|
assert(ep->pollival != 0);
|
|
if(ep->mode != OREAD){
|
|
if(ep->toggle[OWRITE] != 0)
|
|
io[OWRITE].toggle = Tddata1;
|
|
else
|
|
io[OWRITE].toggle = Tddata0;
|
|
io[OWRITE].tok = Tdtokout;
|
|
io[OWRITE].usbid = usbid;
|
|
io[OWRITE].bw = ep->maxpkt*1000/ep->pollival; /* bytes/s */
|
|
io[OWRITE].qh = qhalloc(ctlr, ep, io+OWRITE, "epw");
|
|
}
|
|
if(ep->mode != OWRITE){
|
|
if(ep->toggle[OREAD] != 0)
|
|
io[OREAD].toggle = Tddata1;
|
|
else
|
|
io[OREAD].toggle = Tddata0;
|
|
io[OREAD].tok = Tdtokin;
|
|
io[OREAD].usbid = usbid;
|
|
io[OREAD].bw = ep->maxpkt*1000/ep->pollival; /* bytes/s */
|
|
io[OREAD].qh = qhalloc(ctlr, ep, io+OREAD, "epr");
|
|
}
|
|
break;
|
|
}
|
|
coherence();
|
|
if(ehcidebug>1 || ep->debug)
|
|
dump(ep->hp);
|
|
deprint("ehci: epopen done\n");
|
|
poperror();
|
|
}
|
|
|
|
static void
|
|
cancelio(Ctlr *ctlr, Qio *io)
|
|
{
|
|
Qh *qh;
|
|
|
|
ilock(ctlr);
|
|
qh = io->qh;
|
|
if(io == nil || io->qh == nil || io->qh->state == Qclose){
|
|
iunlock(ctlr);
|
|
return;
|
|
}
|
|
dqprint("ehci: cancelio for qh %#p state %s\n",
|
|
qh, qhsname[qh->state]);
|
|
aborttds(qh);
|
|
qh->state = Qclose;
|
|
iunlock(ctlr);
|
|
if(!waserror()){
|
|
tsleep(&up->sleep, return0, 0, Abortdelay);
|
|
poperror();
|
|
}
|
|
wakeup(io);
|
|
qlock(io);
|
|
/* wait for epio if running */
|
|
qunlock(io);
|
|
|
|
qhfree(ctlr, qh);
|
|
io->qh = nil;
|
|
}
|
|
|
|
static void
|
|
cancelisoio(Ctlr *ctlr, Isoio *iso, int pollival, ulong load)
|
|
{
|
|
int frno, i, n, t, w, woff;
|
|
ulong *lp, *tp;
|
|
Isoio **il;
|
|
Itd *td;
|
|
Sitd *std;
|
|
|
|
ilock(ctlr);
|
|
if(iso->state == Qclose){
|
|
iunlock(ctlr);
|
|
return;
|
|
}
|
|
ctlr->nreqs--;
|
|
if(iso->state != Qrun && iso->state != Qdone)
|
|
panic("bad iso state");
|
|
iso->state = Qclose;
|
|
coherence();
|
|
if(ctlr->isoload < load)
|
|
panic("ehci: low isoload");
|
|
ctlr->isoload -= load;
|
|
ctlr->load -= load;
|
|
for(il = &ctlr->iso; *il != nil; il = &(*il)->next)
|
|
if(*il == iso)
|
|
break;
|
|
if(*il == nil)
|
|
panic("cancleiso: not found");
|
|
*il = iso->next;
|
|
|
|
frno = iso->td0frno;
|
|
for(i = 0; i < iso->nframes; i++){
|
|
tp = iso->tdps[frno];
|
|
if(iso->hs != 0){
|
|
td = iso->itdps[frno];
|
|
for(t = 0; t < nelem(td->csw); t++)
|
|
td->csw[t] &= ~(Itdioc|Itdactive);
|
|
}else{
|
|
std = iso->sitdps[frno];
|
|
std->csw &= ~(Stdioc|Stdactive);
|
|
}
|
|
coherence();
|
|
for(lp = &ctlr->frames[frno]; !(*lp & Lterm);
|
|
lp = &LPTR(*lp)[0])
|
|
if(LPTR(*lp) == tp)
|
|
break;
|
|
if(*lp & Lterm)
|
|
panic("cancelisoio: td not found");
|
|
*lp = tp[0];
|
|
/*
|
|
* Iso uses a virtual frame window of Nisoframes, and we must
|
|
* restore pointers in copies of the window kept at ctlr->frames.
|
|
*/
|
|
if(lp == &ctlr->frames[frno]){
|
|
n = ctlr->nframes / Nisoframes;
|
|
for(w = 1; w < n; w++){
|
|
woff = w * Nisoframes;
|
|
ctlr->frames[woff+frno] = *lp;
|
|
}
|
|
}
|
|
coherence();
|
|
frno = TRUNC(frno+pollival, Nisoframes);
|
|
}
|
|
iunlock(ctlr);
|
|
|
|
/*
|
|
* wakeup anyone waiting for I/O and
|
|
* wait to be sure no I/O is in progress in the controller.
|
|
* and then wait to be sure episo* is no longer running.
|
|
*/
|
|
wakeup(iso);
|
|
diprint("cancelisoio iso %#p waiting for I/O to cease\n", iso);
|
|
tsleep(&up->sleep, return0, 0, 5);
|
|
qlock(iso);
|
|
qunlock(iso);
|
|
diprint("cancelisoio iso %#p releasing iso\n", iso);
|
|
|
|
frno = iso->td0frno;
|
|
for(i = 0; i < iso->nframes; i++){
|
|
if(iso->hs != 0)
|
|
itdfree(iso->itdps[frno]);
|
|
else
|
|
sitdfree(iso->sitdps[frno]);
|
|
iso->tdps[frno] = nil;
|
|
frno = TRUNC(frno+pollival, Nisoframes);
|
|
}
|
|
free(iso->tdps);
|
|
iso->tdps = nil;
|
|
free(iso->data);
|
|
iso->data = nil;
|
|
coherence();
|
|
}
|
|
|
|
static void
|
|
epclose(Ep *ep)
|
|
{
|
|
Qio *io;
|
|
Ctlio *cio;
|
|
Isoio *iso;
|
|
Ctlr *ctlr;
|
|
|
|
ctlr = ep->hp->aux;
|
|
deprint("ehci: epclose ep%d.%d\n", ep->dev->nb, ep->nb);
|
|
|
|
if(ep->aux == nil)
|
|
panic("ehci: epclose called with closed ep");
|
|
switch(ep->ttype){
|
|
case Tctl:
|
|
cio = ep->aux;
|
|
cancelio(ctlr, cio);
|
|
free(cio->data);
|
|
cio->data = nil;
|
|
break;
|
|
case Tintr:
|
|
case Tbulk:
|
|
io = ep->aux;
|
|
ep->toggle[OREAD] = ep->toggle[OWRITE] = 0;
|
|
if(ep->mode != OWRITE){
|
|
cancelio(ctlr, &io[OREAD]);
|
|
if(io[OREAD].toggle == Tddata1)
|
|
ep->toggle[OREAD] = 1;
|
|
}
|
|
if(ep->mode != OREAD){
|
|
cancelio(ctlr, &io[OWRITE]);
|
|
if(io[OWRITE].toggle == Tddata1)
|
|
ep->toggle[OWRITE] = 1;
|
|
}
|
|
coherence();
|
|
break;
|
|
case Tiso:
|
|
iso = ep->aux;
|
|
cancelisoio(ctlr, iso, ep->pollival, ep->load);
|
|
break;
|
|
default:
|
|
panic("epclose: bad ttype");
|
|
}
|
|
free(ep->aux);
|
|
ep->aux = nil;
|
|
}
|
|
|
|
/*
|
|
* return smallest power of 2 >= n
|
|
*/
|
|
static int
|
|
flog2(int n)
|
|
{
|
|
int i;
|
|
|
|
for(i = 0; (1 << i) < n; i++)
|
|
;
|
|
return i;
|
|
}
|
|
|
|
/*
|
|
* build the periodic scheduling tree:
|
|
* framesize must be a multiple of the tree size
|
|
*/
|
|
static void
|
|
mkqhtree(Ctlr *ctlr)
|
|
{
|
|
int i, n, d, o, leaf0, depth;
|
|
ulong leafs[Nintrleafs];
|
|
Qh *qh;
|
|
Qh **tree;
|
|
Qtree *qt;
|
|
|
|
depth = flog2(Nintrleafs);
|
|
n = (1 << (depth+1)) - 1;
|
|
qt = mallocz(sizeof(*qt), 1);
|
|
if(qt == nil)
|
|
panic("ehci: mkqhtree: no memory");
|
|
qt->nel = n;
|
|
qt->depth = depth;
|
|
qt->bw = mallocz(n * sizeof(qt->bw), 1);
|
|
qt->root = tree = mallocz(n * sizeof(Qh *), 1);
|
|
if(qt->bw == nil || tree == nil)
|
|
panic("ehci: mkqhtree: no memory");
|
|
for(i = 0; i < n; i++){
|
|
tree[i] = qh = edalloc();
|
|
if(qh == nil)
|
|
panic("ehci: mkqhtree: no memory");
|
|
qh->nlink = qh->alink = qh->link = Lterm;
|
|
qh->csw = Tdhalt;
|
|
qh->state = Qidle;
|
|
coherence();
|
|
if(i > 0)
|
|
qhlinkqh(tree[i], tree[(i-1)/2]);
|
|
}
|
|
ctlr->ntree = i;
|
|
dprint("ehci: tree: %d endpoints allocated\n", i);
|
|
|
|
/* distribute leaves evenly round the frame list */
|
|
leaf0 = n / 2;
|
|
for(i = 0; i < Nintrleafs; i++){
|
|
o = 0;
|
|
for(d = 0; d < depth; d++){
|
|
o <<= 1;
|
|
if(i & (1 << d))
|
|
o |= 1;
|
|
}
|
|
if(leaf0 + o >= n){
|
|
print("leaf0=%d o=%d i=%d n=%d\n", leaf0, o, i, n);
|
|
break;
|
|
}
|
|
leafs[i] = PADDR(tree[leaf0 + o]) | Lqh;
|
|
}
|
|
assert((ctlr->nframes % Nintrleafs) == 0);
|
|
for(i = 0; i < ctlr->nframes; i += Nintrleafs){
|
|
memmove(ctlr->frames + i, leafs, sizeof leafs);
|
|
coherence();
|
|
}
|
|
ctlr->tree = qt;
|
|
coherence();
|
|
}
|
|
|
|
void
|
|
ehcimeminit(Ctlr *ctlr)
|
|
{
|
|
int i, frsize;
|
|
Eopio *opio;
|
|
|
|
opio = ctlr->opio;
|
|
frsize = ctlr->nframes * sizeof(ulong);
|
|
assert((frsize & 0xFFF) == 0); /* must be 4k aligned */
|
|
ctlr->frames = xspanalloc(frsize, frsize, 0);
|
|
if(ctlr->frames == nil)
|
|
panic("ehci reset: no memory");
|
|
|
|
for (i = 0; i < ctlr->nframes; i++)
|
|
ctlr->frames[i] = Lterm;
|
|
opio->frbase = PADDR(ctlr->frames);
|
|
opio->frno = 0;
|
|
coherence();
|
|
|
|
qhalloc(ctlr, nil, nil, nil); /* init async list */
|
|
mkqhtree(ctlr); /* init sync list */
|
|
edfree(edalloc()); /* try to get some ones pre-allocated */
|
|
|
|
dprint("ehci %#p flb %#lux frno %#lux\n",
|
|
ctlr->capio, opio->frbase, opio->frno);
|
|
}
|
|
|
|
static void
|
|
init(Hci *hp)
|
|
{
|
|
Ctlr *ctlr;
|
|
Eopio *opio;
|
|
int i;
|
|
|
|
hp->highspeed = 1;
|
|
ctlr = hp->aux;
|
|
opio = ctlr->opio;
|
|
dprint("ehci %#p init\n", ctlr->capio);
|
|
|
|
ilock(ctlr);
|
|
/*
|
|
* Unless we activate frroll interrupt
|
|
* some machines won't post other interrupts.
|
|
*/
|
|
opio->intr = Iusb|Ierr|Iportchg|Ihcerr|Iasync;
|
|
coherence();
|
|
opio->cmd |= Cpse;
|
|
coherence();
|
|
opio->cmd |= Case;
|
|
coherence();
|
|
ehcirun(ctlr, 1);
|
|
opio->config = Callmine; /* reclaim all ports */
|
|
coherence();
|
|
|
|
for (i = 0; i < hp->nports; i++)
|
|
opio->portsc[i] = Pspower;
|
|
iunlock(ctlr);
|
|
if(ehcidebug > 1)
|
|
dump(hp);
|
|
}
|
|
|
|
void
|
|
ehcilinkage(Hci *hp)
|
|
{
|
|
hp->init = init;
|
|
hp->dump = dump;
|
|
hp->interrupt = interrupt;
|
|
hp->epopen = epopen;
|
|
hp->epclose = epclose;
|
|
hp->epread = epread;
|
|
hp->epwrite = epwrite;
|
|
hp->seprintep = seprintep;
|
|
hp->portenable = portenable;
|
|
hp->portreset = portreset;
|
|
hp->portstatus = portstatus;
|
|
// hp->shutdown = shutdown;
|
|
// hp->debug = setdebug;
|
|
hp->type = "ehci";
|
|
}
|