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- #include "u.h"
- #include "lib.h"
- #include "mem.h"
- #include "dat.h"
- #include "fns.h"
- #include "error.h"
- #include "io.h"
- /*
- * Support for up to 4 Slot card slots. Generalizing above that is hard
- * since addressing is not obvious. - presotto
- *
- * WARNING: This has never been tried with more than one card slot.
- */
- /*
- * Intel 82365SL PCIC controller for the PCMCIA or
- * Cirrus Logic PD6710/PD6720 which is mostly register compatible
- */
- enum
- {
- /*
- * registers indices
- */
- Rid= 0x0, /* identification and revision */
- Ris= 0x1, /* interface status */
- Rpc= 0x2, /* power control */
- Foutena= (1<<7), /* output enable */
- Fautopower= (1<<5), /* automatic power switching */
- Fcardena= (1<<4), /* PC card enable */
- Rigc= 0x3, /* interrupt and general control */
- Fiocard= (1<<5), /* I/O card (vs memory) */
- Fnotreset= (1<<6), /* reset if not set */
- FSMIena= (1<<4), /* enable change interrupt on SMI */
- Rcsc= 0x4, /* card status change */
- Rcscic= 0x5, /* card status change interrupt config */
- Fchangeena= (1<<3), /* card changed */
- Fbwarnena= (1<<1), /* card battery warning */
- Fbdeadena= (1<<0), /* card battery dead */
- Rwe= 0x6, /* address window enable */
- Fmem16= (1<<5), /* use A23-A12 to decode address */
- Rio= 0x7, /* I/O control */
- Fwidth16= (1<<0), /* 16 bit data width */
- Fiocs16= (1<<1), /* IOCS16 determines data width */
- Fzerows= (1<<2), /* zero wait state */
- Ftiming= (1<<3), /* timing register to use */
- Riobtm0lo= 0x8, /* I/O address 0 start low byte */
- Riobtm0hi= 0x9, /* I/O address 0 start high byte */
- Riotop0lo= 0xa, /* I/O address 0 stop low byte */
- Riotop0hi= 0xb, /* I/O address 0 stop high byte */
- Riobtm1lo= 0xc, /* I/O address 1 start low byte */
- Riobtm1hi= 0xd, /* I/O address 1 start high byte */
- Riotop1lo= 0xe, /* I/O address 1 stop low byte */
- Riotop1hi= 0xf, /* I/O address 1 stop high byte */
- Rmap= 0x10, /* map 0 */
- /*
- * CL-PD67xx extension registers
- */
- Rmisc1= 0x16, /* misc control 1 */
- F5Vdetect= (1<<0),
- Fvcc3V= (1<<1),
- Fpmint= (1<<2),
- Fpsirq= (1<<3),
- Fspeaker= (1<<4),
- Finpack= (1<<7),
- Rfifo= 0x17, /* fifo control */
- Fflush= (1<<7), /* flush fifo */
- Rmisc2= 0x1E, /* misc control 2 */
- Flowpow= (1<<1), /* low power mode */
- Rchipinfo= 0x1F, /* chip information */
- Ratactl= 0x26, /* ATA control */
- /*
- * offsets into the system memory address maps
- */
- Mbtmlo= 0x0, /* System mem addr mapping start low byte */
- Mbtmhi= 0x1, /* System mem addr mapping start high byte */
- F16bit= (1<<7), /* 16-bit wide data path */
- Mtoplo= 0x2, /* System mem addr mapping stop low byte */
- Mtophi= 0x3, /* System mem addr mapping stop high byte */
- Ftimer1= (1<<6), /* timer set 1 */
- Mofflo= 0x4, /* Card memory offset address low byte */
- Moffhi= 0x5, /* Card memory offset address high byte */
- Fregactive= (1<<6), /* attribute memory */
- Mbits= 13, /* msb of Mchunk */
- Mchunk= 1<<Mbits, /* logical mapping granularity */
- Nmap= 4, /* max number of maps to use */
- /*
- * configuration registers - they start at an offset in attribute
- * memory found in the CIS.
- */
- Rconfig= 0,
- Creset= (1<<7), /* reset device */
- Clevel= (1<<6), /* level sensitive interrupt line */
- Maxctab= 8, /* maximum configuration table entries */
- };
- static int pcmcia_pcmspecial(char *, ISAConf *);
- static void pcmcia_pcmspecialclose(int);
- #define MAP(x,o) (Rmap + (x)*0x8 + o)
- typedef struct I82365 I82365;
- typedef struct Slot Slot;
- typedef struct Conftab Conftab;
- typedef struct Cisdat Cisdat;
- /* a controller */
- enum
- {
- Ti82365,
- Tpd6710,
- Tpd6720,
- Tvg46x,
- };
- struct I82365
- {
- int type;
- int dev;
- int nslot;
- int xreg; /* index register address */
- int dreg; /* data register address */
- int irq;
- };
- static I82365 *controller[4];
- static int ncontroller;
- /* configuration table entry */
- struct Conftab
- {
- int index;
- ushort irqs; /* legal irqs */
- uchar irqtype;
- uchar bit16; /* true for 16 bit access */
- struct {
- ulong start;
- ulong len;
- } io[16];
- int nio;
- uchar vpp1;
- uchar vpp2;
- uchar memwait;
- ulong maxwait;
- ulong readywait;
- ulong otherwait;
- };
- /* cis memory walking */
- struct Cisdat
- {
- uchar *cisbase;
- int cispos;
- int cisskip;
- int cislen;
- };
- /* a card slot */
- struct Slot
- {
- Lock;
- int ref;
- I82365 *cp; /* controller for this slot */
- long memlen; /* memory length */
- uchar base; /* index register base */
- uchar slotno; /* slot number */
- /* status */
- uchar special; /* in use for a special device */
- uchar already; /* already inited */
- uchar occupied;
- uchar battery;
- uchar wrprot;
- uchar powered;
- uchar configed;
- uchar enabled;
- uchar busy;
- /* cis info */
- char verstr[512]; /* version string */
- uchar cpresent; /* config registers present */
- ulong caddr; /* relative address of config registers */
- int nctab; /* number of config table entries */
- Conftab ctab[Maxctab];
- Conftab *def; /* default conftab */
- /* for walking through cis */
- Cisdat;
- /* memory maps */
- Lock mlock; /* lock down the maps */
- int time;
- PCMmap mmap[Nmap]; /* maps, last is always for the kernel */
- };
- static Slot *slot;
- static Slot *lastslot;
- static nslot;
- static void cisread(Slot*);
- static void i82365intr(Ureg*, void*);
- static void i82365reset(void);
- static int pcmio(int, ISAConf*);
- static long pcmread(int, int, void*, long, vlong);
- static long pcmwrite(int, int, void*, long, vlong);
- static void i82365dump(Slot*);
- void
- devi82365link(void)
- {
- static int already;
- if(already)
- return;
- already = 1;
- if (_pcmspecial)
- return;
-
- _pcmspecial = pcmcia_pcmspecial;
- _pcmspecialclose = pcmcia_pcmspecialclose;
- }
- /*
- * reading and writing card registers
- */
- static uchar
- rdreg(Slot *pp, int index)
- {
- outb(pp->cp->xreg, pp->base + index);
- return inb(pp->cp->dreg);
- }
- static void
- wrreg(Slot *pp, int index, uchar val)
- {
- outb(pp->cp->xreg, pp->base + index);
- outb(pp->cp->dreg, val);
- }
- /*
- * get info about card
- */
- static void
- slotinfo(Slot *pp)
- {
- uchar isr;
- isr = rdreg(pp, Ris);
- pp->occupied = (isr & (3<<2)) == (3<<2);
- pp->powered = isr & (1<<6);
- pp->battery = (isr & 3) == 3;
- pp->wrprot = isr & (1<<4);
- pp->busy = isr & (1<<5);
- }
- static int
- vcode(int volt)
- {
- switch(volt){
- case 5:
- return 1;
- case 12:
- return 2;
- default:
- return 0;
- }
- }
- /*
- * enable the slot card
- */
- static void
- slotena(Slot *pp)
- {
- if(pp->enabled)
- return;
- /* power up and unreset, wait's are empirical (???) */
- wrreg(pp, Rpc, Fautopower|Foutena|Fcardena);
- delay(300);
- wrreg(pp, Rigc, 0);
- delay(100);
- wrreg(pp, Rigc, Fnotreset);
- delay(500);
- /* get configuration */
- slotinfo(pp);
- if(pp->occupied){
- cisread(pp);
- pp->enabled = 1;
- } else
- wrreg(pp, Rpc, Fautopower);
- }
- /*
- * disable the slot card
- */
- static void
- slotdis(Slot *pp)
- {
- wrreg(pp, Rpc, 0); /* turn off card power */
- wrreg(pp, Rwe, 0); /* no windows */
- pp->enabled = 0;
- }
- /*
- * status change interrupt
- */
- static void
- i82365intr(Ureg *, void *)
- {
- uchar csc, was;
- Slot *pp;
- if(slot == 0)
- return;
- for(pp = slot; pp < lastslot; pp++){
- csc = rdreg(pp, Rcsc);
- was = pp->occupied;
- slotinfo(pp);
- if(csc & (1<<3) && was != pp->occupied){
- if(!pp->occupied)
- slotdis(pp);
- }
- }
- }
- enum
- {
- Mshift= 12,
- Mgran= (1<<Mshift), /* granularity of maps */
- Mmask= ~(Mgran-1), /* mask for address bits important to the chip */
- };
- /*
- * get a map for pc card region, return corrected len
- */
- PCMmap*
- pcmmap(int slotno, ulong offset, int len, int attr)
- {
- Slot *pp;
- uchar we, bit;
- PCMmap *m, *nm;
- int i;
- ulong e;
- pp = slot + slotno;
- lock(&pp->mlock);
- /* convert offset to granularity */
- if(len <= 0)
- len = 1;
- e = ROUND(offset+len, Mgran);
- offset &= Mmask;
- len = e - offset;
- /* look for a map that covers the right area */
- we = rdreg(pp, Rwe);
- bit = 1;
- nm = 0;
- for(m = pp->mmap; m < &pp->mmap[Nmap]; m++){
- if((we & bit))
- if(m->attr == attr)
- if(offset >= m->ca && e <= m->cea){
- m->ref++;
- unlock(&pp->mlock);
- return m;
- }
- bit <<= 1;
- if(nm == 0 && m->ref == 0)
- nm = m;
- }
- m = nm;
- if(m == 0){
- unlock(&pp->mlock);
- return 0;
- }
- /* if isa space isn't big enough, free it and get more */
- if(m->len < len){
- if(m->isa){
- umbfree(m->isa, m->len);
- m->len = 0;
- }
- m->isa = PADDR(umbmalloc(0, len, Mgran));
- if(m->isa == 0){
- print("pcmmap %d: out of isa space\n", len);
- unlock(&pp->mlock);
- return 0;
- }
- m->len = len;
- }
- /* set up new map */
- m->ca = offset;
- m->cea = m->ca + m->len;
- m->attr = attr;
- i = m-pp->mmap;
- bit = 1<<i;
- wrreg(pp, Rwe, we & ~bit); /* disable map before changing it */
- wrreg(pp, MAP(i, Mbtmlo), m->isa>>Mshift);
- wrreg(pp, MAP(i, Mbtmhi), (m->isa>>(Mshift+8)) | F16bit);
- wrreg(pp, MAP(i, Mtoplo), (m->isa+m->len-1)>>Mshift);
- wrreg(pp, MAP(i, Mtophi), ((m->isa+m->len-1)>>(Mshift+8)));
- offset -= m->isa;
- offset &= (1<<25)-1;
- offset >>= Mshift;
- wrreg(pp, MAP(i, Mofflo), offset);
- wrreg(pp, MAP(i, Moffhi), (offset>>8) | (attr ? Fregactive : 0));
- wrreg(pp, Rwe, we | bit); /* enable map */
- m->ref = 1;
- unlock(&pp->mlock);
- return m;
- }
- void
- pcmunmap(int slotno, PCMmap* m)
- {
- Slot *pp;
- pp = slot + slotno;
- lock(&pp->mlock);
- m->ref--;
- unlock(&pp->mlock);
- }
- static void
- increfp(Slot *pp)
- {
- lock(pp);
- if(pp->ref++ == 0)
- slotena(pp);
- unlock(pp);
- }
- static void
- decrefp(Slot *pp)
- {
- lock(pp);
- if(pp->ref-- == 1)
- slotdis(pp);
- unlock(pp);
- }
- /*
- * look for a card whose version contains 'idstr'
- */
- static int
- pcmcia_pcmspecial(char *idstr, ISAConf *isa)
- {
- Slot *pp;
- extern char *strstr(char*, char*);
- int enabled;
- i82365reset();
- for(pp = slot; pp < lastslot; pp++){
- if(pp->special)
- continue; /* already taken */
- enabled = 0;
- /* make sure we don't power on cards when we already know what's
- * in them. We'll reread every two minutes if necessary
- */
- if (pp->verstr[0] == '\0') {
- increfp(pp);
- enabled++;
- }
- if(pp->occupied) {
- if(strstr(pp->verstr, idstr)) {
- if (!enabled)
- increfp(pp);
- if(isa == 0 || pcmio(pp->slotno, isa) == 0){
- pp->special = 1;
- return pp->slotno;
- }
- }
- } else
- pp->special = 1;
- if (enabled)
- decrefp(pp);
- }
- return -1;
- }
- static void
- pcmcia_pcmspecialclose(int slotno)
- {
- Slot *pp;
- print("pcmspecialclose called\n");
- if(slotno >= nslot)
- panic("pcmspecialclose");
- pp = slot + slotno;
- pp->special = 0;
- decrefp(pp);
- }
- static char *chipname[] =
- {
- [Ti82365] "Intel 82365SL",
- [Tpd6710] "Cirrus Logic PD6710",
- [Tpd6720] "Cirrus Logic PD6720",
- [Tvg46x] "Vadem VG-46x",
- };
- static I82365*
- i82365probe(int x, int d, int dev)
- {
- uchar c, id;
- I82365 *cp;
- ISAConf isa;
- int i, nslot;
- outb(x, Rid + (dev<<7));
- id = inb(d);
- if((id & 0xf0) != 0x80)
- return 0; /* not this family */
- cp = xalloc(sizeof(I82365));
- cp->xreg = x;
- cp->dreg = d;
- cp->dev = dev;
- cp->type = Ti82365;
- cp->nslot = 2;
- switch(id){
- case 0x82:
- case 0x83:
- case 0x84:
- /* could be a cirrus */
- outb(x, Rchipinfo + (dev<<7));
- outb(d, 0);
- c = inb(d);
- if((c & 0xc0) != 0xc0)
- break;
- c = inb(d);
- if((c & 0xc0) != 0x00)
- break;
- if(c & 0x20){
- cp->type = Tpd6720;
- } else {
- cp->type = Tpd6710;
- cp->nslot = 1;
- }
- /* low power mode */
- outb(x, Rmisc2 + (dev<<7));
- c = inb(d);
- outb(d, c & ~Flowpow);
- break;
- }
- if(cp->type == Ti82365){
- outb(x, 0x0E + (dev<<7));
- outb(x, 0x37 + (dev<<7));
- outb(x, 0x3A + (dev<<7));
- c = inb(d);
- outb(d, c|0xC0);
- outb(x, Rid + (dev<<7));
- c = inb(d);
- if(c != id && !(c & 0x08))
- print("#y%d: id %uX changed to %uX\n", ncontroller, id, c);
- if(c & 0x08)
- cp->type = Tvg46x;
- outb(x, 0x3A + (dev<<7));
- c = inb(d);
- outb(d, c & ~0xC0);
- }
- memset(&isa, 0, sizeof(ISAConf));
- if(isaconfig("pcmcia", ncontroller, &isa) && isa.irq)
- cp->irq = isa.irq;
- else
- cp->irq = VectorPCMCIA - VectorPIC;
- for(i = 0; i < isa.nopt; i++){
- if(cistrncmp(isa.opt[i], "nslot=", 6))
- continue;
- nslot = strtol(&isa.opt[i][6], nil, 0);
- if(nslot > 0 && nslot <= 2)
- cp->nslot = nslot;
- }
- controller[ncontroller++] = cp;
- return cp;
- }
- static void
- i82365dump(Slot *pp)
- {
- int i;
- for(i = 0; i < 0x40; i++){
- if((i&0x0F) == 0)
- print("\n%2.2uX: ", i);
- if(((i+1) & 0x0F) == 0x08)
- print(" - ");
- print("%2.2uX ", rdreg(pp, i));
- }
- print("\n");
- }
- /*
- * set up for slot cards
- */
- static void
- i82365reset(void)
- {
- static int already;
- int i, j;
- I82365 *cp;
- Slot *pp;
- if(already)
- return;
- already = 1;
- /* look for controllers */
- i82365probe(0x3E0, 0x3E1, 0);
- i82365probe(0x3E0, 0x3E1, 1);
- i82365probe(0x3E2, 0x3E3, 0);
- i82365probe(0x3E2, 0x3E3, 1);
- for(i = 0; i < ncontroller; i++)
- nslot += controller[i]->nslot;
- slot = xalloc(nslot * sizeof(Slot));
- /* if the card is there turn on 5V power to keep its battery alive */
- lastslot = slot;
- for(i = 0; i < ncontroller; i++){
- cp = controller[i];
- print("#y%d: %d slot %s: port 0x%uX irq %d\n",
- i, cp->nslot, chipname[cp->type], cp->xreg, cp->irq);
- for(j = 0; j < cp->nslot; j++){
- pp = lastslot++;
- pp->slotno = pp - slot;
- pp->memlen = 64*MB;
- pp->base = (cp->dev<<7) | (j<<6);
- pp->cp = cp;
- slotdis(pp);
- /* interrupt on status change */
- wrreg(pp, Rcscic, (cp->irq<<4) | Fchangeena);
- rdreg(pp, Rcsc);
- }
- /* for card management interrupts */
- setvec(cp->irq+VectorPIC, i82365intr, 0);
- }
- }
- /*
- * configure the Slot for IO. We assume very heavily that we can read
- * configuration info from the CIS. If not, we won't set up correctly.
- */
- static int
- pcmio(int slotno, ISAConf *isa)
- {
- uchar we, x, *p;
- Slot *pp;
- Conftab *ct, *et, *t;
- PCMmap *m;
- int i, index, irq;
- char *cp;
- irq = isa->irq;
- if(irq == 2)
- irq = 9;
- if(slotno > nslot)
- return -1;
- pp = slot + slotno;
- if(!pp->occupied)
- return -1;
- et = &pp->ctab[pp->nctab];
- ct = 0;
- for(i = 0; i < isa->nopt; i++){
- if(strncmp(isa->opt[i], "index=", 6))
- continue;
- index = strtol(&isa->opt[i][6], &cp, 0);
- if(cp == &isa->opt[i][6] || index >= pp->nctab)
- return -1;
- ct = &pp->ctab[index];
- }
- if(ct == 0){
-
- /* assume default is right */
- if(pp->def)
- ct = pp->def;
- else
- ct = pp->ctab;
-
- /* try for best match */
- if(ct->nio == 0
- || ct->io[0].start != isa->port || ((1<<irq) & ct->irqs) == 0){
- for(t = pp->ctab; t < et; t++)
- if(t->nio
- && t->io[0].start == isa->port
- && ((1<<irq) & t->irqs)){
- ct = t;
- break;
- }
- }
- if(ct->nio == 0 || ((1<<irq) & ct->irqs) == 0){
- for(t = pp->ctab; t < et; t++)
- if(t->nio && ((1<<irq) & t->irqs)){
- ct = t;
- break;
- }
- }
- if(ct->nio == 0){
- for(t = pp->ctab; t < et; t++)
- if(t->nio){
- ct = t;
- break;
- }
- }
- }
- if(ct == et || ct->nio == 0)
- return -1;
- if(isa->port == 0 && ct->io[0].start == 0)
- return -1;
- /* route interrupts */
- isa->irq = irq;
- wrreg(pp, Rigc, irq | Fnotreset | Fiocard);
-
- /* set power and enable device */
- x = vcode(ct->vpp1);
- wrreg(pp, Rpc, x|Fautopower|Foutena|Fcardena);
- /* 16-bit data path */
- if(ct->bit16)
- x = Ftiming|Fiocs16|Fwidth16;
- else
- x = Ftiming;
- if(ct->nio == 2 && ct->io[1].start)
- x |= x<<4;
- wrreg(pp, Rio, x);
- /* enable io port map 0 */
- if(isa->port == 0)
- isa->port = ct->io[0].start;
- we = rdreg(pp, Rwe);
- wrreg(pp, Riobtm0lo, isa->port);
- wrreg(pp, Riobtm0hi, isa->port>>8);
- i = isa->port+ct->io[0].len-1;
- wrreg(pp, Riotop0lo, i);
- wrreg(pp, Riotop0hi, i>>8);
- we |= 1<<6;
- if(ct->nio == 2 && ct->io[1].start){
- wrreg(pp, Riobtm1lo, ct->io[1].start);
- wrreg(pp, Riobtm1hi, ct->io[1].start>>8);
- i = ct->io[1].start+ct->io[1].len-1;
- wrreg(pp, Riotop1lo, i);
- wrreg(pp, Riotop1hi, i>>8);
- we |= 1<<7;
- }
- wrreg(pp, Rwe, we);
- /* only touch Rconfig if it is present */
- if(pp->cpresent & (1<<Rconfig)){
- /* Reset adapter */
- m = pcmmap(slotno, pp->caddr + Rconfig, 1, 1);
- p = KADDR(m->isa + pp->caddr + Rconfig - m->ca);
- /* set configuration and interrupt type */
- x = ct->index;
- if((ct->irqtype & 0x20) && ((ct->irqtype & 0x40)==0 || isa->irq>7))
- x |= Clevel;
- *p = x;
- delay(5);
- pcmunmap(slotno, m);
- }
- return 0;
- }
- /*
- * read and crack the card information structure enough to set
- * important parameters like power
- */
- static void tcfig(Slot*, Cisdat*, int);
- static void tentry(Slot*, Cisdat*, int);
- static void tvers1(Slot*, Cisdat*, int);
- struct {
- int n;
- void (*parse)(Slot*, Cisdat*, int);
- } cistab[] = {
- 0x15, tvers1,
- 0x1A, tcfig,
- 0x1B, tentry,
- };
- static int
- readc(Cisdat *pp, uchar *x)
- {
- if(pp->cispos >= pp->cislen)
- return 0;
- *x = pp->cisbase[pp->cisskip*pp->cispos];
- pp->cispos++;
- return 1;
- }
- static int
- xcistuple(int slotno, int tuple, void *v, int nv, int attr)
- {
- PCMmap *m;
- Cisdat cis;
- int i, l;
- uchar *p;
- uchar type, link;
- int this;
- m = pcmmap(slotno, 0, 0, attr);
- if(m == 0) {
- if(debug) print("could not map\n");
- return -1;
- }
- cis.cisbase = KADDR(m->isa);
- cis.cispos = 0;
- cis.cisskip = attr ? 2 : 1;
- cis.cislen = Mchunk;
- if(debug) print("cis %d %d #%lux srch %x...", attr, cis.cisskip, cis.cisbase, tuple);
- /* loop through all the tuples */
- for(i = 0; i < 1000; i++){
- this = cis.cispos;
- if(readc(&cis, &type) != 1)
- break;
- if(debug) print("%2ux...", type);
- if(type == 0xFF)
- break;
- if(readc(&cis, &link) != 1)
- break;
- if(link == 0xFF)
- break;
- if(type == tuple) {
- p = v;
- for(l=0; l<nv && l<link; l++)
- if(readc(&cis, p++) != 1)
- break;
- pcmunmap(slotno, m);
- if(debug) print("pcm find %2.2ux %d %d\n", type, link, l);
- return l;
- }
- cis.cispos = this + (2+link);
- }
- pcmunmap(slotno, m);
- return -1;
- }
- int
- pcmcistuple(int slotno, int tuple, void *v, int nv)
- {
- int n;
- /* try attribute space, then memory */
- if((n = xcistuple(slotno, tuple, v, nv, 1)) >= 0)
- return n;
- return xcistuple(slotno, tuple, v, nv, 0);
- }
- static void
- cisread(Slot *pp)
- {
- uchar v[256];
- int i, nv;
- Cisdat cis;
- memset(pp->ctab, 0, sizeof(pp->ctab));
- pp->caddr = 0;
- pp->cpresent = 0;
- pp->configed = 0;
- pp->nctab = 0;
- for(i = 0; i < nelem(cistab); i++) {
- if((nv = pcmcistuple(pp->slotno, cistab[i].n, v, sizeof(v))) >= 0) {
- cis.cisbase = v;
- cis.cispos = 0;
- cis.cisskip = 1;
- cis.cislen = nv;
-
- (*cistab[i].parse)(pp, &cis, cistab[i].n);
- }
- }
- }
- static ulong
- getlong(Cisdat *cis, int size)
- {
- uchar c;
- int i;
- ulong x;
- x = 0;
- for(i = 0; i < size; i++){
- if(readc(cis, &c) != 1)
- break;
- x |= c<<(i*8);
- }
- return x;
- }
- static void
- tcfig(Slot *pp, Cisdat *cis, int )
- {
- uchar size, rasize, rmsize;
- uchar last;
- if(readc(cis, &size) != 1)
- return;
- rasize = (size&0x3) + 1;
- rmsize = ((size>>2)&0xf) + 1;
- if(readc(cis, &last) != 1)
- return;
- pp->caddr = getlong(cis, rasize);
- pp->cpresent = getlong(cis, rmsize);
- }
- static ulong vexp[8] =
- {
- 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000
- };
- static ulong vmant[16] =
- {
- 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80, 90,
- };
- static ulong
- microvolt(Cisdat *cis)
- {
- uchar c;
- ulong microvolts;
- ulong exp;
- if(readc(cis, &c) != 1)
- return 0;
- exp = vexp[c&0x7];
- microvolts = vmant[(c>>3)&0xf]*exp;
- while(c & 0x80){
- if(readc(cis, &c) != 1)
- return 0;
- switch(c){
- case 0x7d:
- break; /* high impedence when sleeping */
- case 0x7e:
- case 0x7f:
- microvolts = 0; /* no connection */
- break;
- default:
- exp /= 10;
- microvolts += exp*(c&0x7f);
- }
- }
- return microvolts;
- }
- static ulong
- nanoamps(Cisdat *cis)
- {
- uchar c;
- ulong nanoamps;
- if(readc(cis, &c) != 1)
- return 0;
- nanoamps = vexp[c&0x7]*vmant[(c>>3)&0xf];
- while(c & 0x80){
- if(readc(cis, &c) != 1)
- return 0;
- if(c == 0x7d || c == 0x7e || c == 0x7f)
- nanoamps = 0;
- }
- return nanoamps;
- }
- /*
- * only nominal voltage is important for config
- */
- static ulong
- power(Cisdat *cis)
- {
- uchar feature;
- ulong mv;
- mv = 0;
- if(readc(cis, &feature) != 1)
- return 0;
- if(feature & 1)
- mv = microvolt(cis);
- if(feature & 2)
- microvolt(cis);
- if(feature & 4)
- microvolt(cis);
- if(feature & 8)
- nanoamps(cis);
- if(feature & 0x10)
- nanoamps(cis);
- if(feature & 0x20)
- nanoamps(cis);
- if(feature & 0x40)
- nanoamps(cis);
- return mv/1000000;
- }
- static ulong mantissa[16] =
- { 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80, };
- static ulong exponent[8] =
- { 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, };
- static ulong
- ttiming(Cisdat *cis, int scale)
- {
- uchar unscaled;
- ulong nanosecs;
- if(readc(cis, &unscaled) != 1)
- return 0;
- nanosecs = (mantissa[(unscaled>>3)&0xf]*exponent[unscaled&7])/10;
- nanosecs = nanosecs * vexp[scale];
- return nanosecs;
- }
- static void
- timing(Cisdat *cis, Conftab *ct)
- {
- uchar c, i;
- if(readc(cis, &c) != 1)
- return;
- i = c&0x3;
- if(i != 3)
- ct->maxwait = ttiming(cis, i); /* max wait */
- i = (c>>2)&0x7;
- if(i != 7)
- ct->readywait = ttiming(cis, i); /* max ready/busy wait */
- i = (c>>5)&0x7;
- if(i != 7)
- ct->otherwait = ttiming(cis, i); /* reserved wait */
- }
- static void
- iospaces(Cisdat *cis, Conftab *ct)
- {
- uchar c;
- int i, nio;
- ct->nio = 0;
- if(readc(cis, &c) != 1)
- return;
- ct->bit16 = ((c>>5)&3) >= 2;
- if(!(c & 0x80)){
- ct->io[0].start = 0;
- ct->io[0].len = 1<<(c&0x1f);
- ct->nio = 1;
- return;
- }
- if(readc(cis, &c) != 1)
- return;
- nio = (c&0xf)+1;
- for(i = 0; i < nio; i++){
- ct->io[i].start = getlong(cis, (c>>4)&0x3);
- ct->io[i].len = getlong(cis, (c>>6)&0x3)+1;
- }
- ct->nio = nio;
- }
- static void
- irq(Cisdat *cis, Conftab *ct)
- {
- uchar c;
- if(readc(cis, &c) != 1)
- return;
- ct->irqtype = c & 0xe0;
- if(c & 0x10)
- ct->irqs = getlong(cis, 2);
- else
- ct->irqs = 1<<(c&0xf);
- ct->irqs &= 0xDEB8; /* levels available to card */
- }
- static void
- memspace(Cisdat *cis, int asize, int lsize, int host)
- {
- ulong haddress, address, len;
- len = getlong(cis, lsize)*256;
- address = getlong(cis, asize)*256;
- USED(len, address);
- if(host){
- haddress = getlong(cis, asize)*256;
- USED(haddress);
- }
- }
- static void
- tentry(Slot *pp, Cisdat *cis, int )
- {
- uchar c, i, feature;
- Conftab *ct;
- if(pp->nctab >= Maxctab)
- return;
- if(readc(cis, &c) != 1)
- return;
- ct = &pp->ctab[pp->nctab++];
- /* copy from last default config */
- if(pp->def)
- *ct = *pp->def;
- ct->index = c & 0x3f;
- /* is this the new default? */
- if(c & 0x40)
- pp->def = ct;
- /* memory wait specified? */
- if(c & 0x80){
- if(readc(cis, &i) != 1)
- return;
- if(i&0x80)
- ct->memwait = 1;
- }
- if(readc(cis, &feature) != 1)
- return;
- switch(feature&0x3){
- case 1:
- ct->vpp1 = ct->vpp2 = power(cis);
- break;
- case 2:
- power(cis);
- ct->vpp1 = ct->vpp2 = power(cis);
- break;
- case 3:
- power(cis);
- ct->vpp1 = power(cis);
- ct->vpp2 = power(cis);
- break;
- default:
- break;
- }
- if(feature&0x4)
- timing(cis, ct);
- if(feature&0x8)
- iospaces(cis, ct);
- if(feature&0x10)
- irq(cis, ct);
- switch((feature>>5)&0x3){
- case 1:
- memspace(cis, 0, 2, 0);
- break;
- case 2:
- memspace(cis, 2, 2, 0);
- break;
- case 3:
- if(readc(cis, &c) != 1)
- return;
- for(i = 0; i <= (c&0x7); i++)
- memspace(cis, (c>>5)&0x3, (c>>3)&0x3, c&0x80);
- break;
- }
- pp->configed++;
- }
- static void
- tvers1(Slot *pp, Cisdat *cis, int )
- {
- uchar c, major, minor;
- int i;
- if(readc(cis, &major) != 1)
- return;
- if(readc(cis, &minor) != 1)
- return;
- for(i = 0; i < sizeof(pp->verstr)-1; i++){
- if(readc(cis, &c) != 1)
- return;
- if(c == 0)
- c = '\n';
- if(c == 0xff)
- break;
- pp->verstr[i] = c;
- }
- pp->verstr[i] = 0;
- }
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