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[unix-history] / usr / src / sys / pmax / pmax / machdep.c
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1992 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department, The Mach Operating System project at
* Carnegie-Mellon University and Ralph Campbell.
*
* %sccs.include.redist.c%
*
* @(#)machdep.c 7.14 (Berkeley) %G%
*/
/* from: Utah $Hdr: machdep.c 1.63 91/04/24$ */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/signalvar.h>
#include <sys/kernel.h>
#include <sys/map.h>
#include <sys/proc.h>
#include <sys/buf.h>
#include <sys/reboot.h>
#include <sys/conf.h>
#include <sys/file.h>
#include <sys/clist.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/msgbuf.h>
#include <sys/user.h>
#include <sys/exec.h>
#ifdef SYSVSHM
#include <sys/shm.h>
#endif
#include <vm/vm.h>
#include <vm/vm_kern.h>
#include <vm/vm_page.h>
#include <machine/cpu.h>
#include <machine/reg.h>
#include <machine/psl.h>
#include <machine/pte.h>
#include <machine/dc7085cons.h>
#include <pmax/stand/dec_prom.h>
#include <pmax/dev/device.h>
#include <pmax/dev/sccreg.h>
#include <pmax/dev/ascreg.h>
#include <pmax/pmax/clockreg.h>
#include <pmax/pmax/kn01.h>
#include <pmax/pmax/kn02.h>
#include <pmax/pmax/kmin.h>
#include <pmax/pmax/maxine.h>
#include <pmax/pmax/kn03.h>
#include <pmax/pmax/asic.h>
#include <pmax/pmax/turbochannel.h>
#include <pmax/pmax/pmaxtype.h>
#include <pmax/pmax/cons.h>
#include <pm.h>
#include <cfb.h>
#include <mfb.h>
#include <xcfb.h>
#include <dc.h>
#include <dtop.h>
#include <scc.h>
#include <le.h>
#include <asc.h>
#if NDC > 0
extern int dcGetc(), dcparam();
extern void dcPutc();
#endif
#if NDTOP > 0
extern int dtopKBDGetc();
#endif
#if NSCC > 0
extern int sccGetc(), sccparam();
extern void sccPutc();
#endif
extern int KBDGetc();
extern void fbPutc();
extern struct consdev cn_tab;
/* Will scan from max to min, inclusive */
static int tc_max_slot = KN02_TC_MAX;
static int tc_min_slot = KN02_TC_MIN;
static u_int tc_slot_phys_base [TC_MAX_SLOTS] = {
/* use 3max for default values */
KN02_PHYS_TC_0_START, KN02_PHYS_TC_1_START,
KN02_PHYS_TC_2_START, KN02_PHYS_TC_3_START,
KN02_PHYS_TC_4_START, KN02_PHYS_TC_5_START,
KN02_PHYS_TC_6_START, KN02_PHYS_TC_7_START
};
vm_map_t buffer_map;
/*
* Declare these as initialized data so we can patch them.
*/
int nswbuf = 0;
#ifdef NBUF
int nbuf = NBUF;
#else
int nbuf = 0;
#endif
#ifdef BUFPAGES
int bufpages = BUFPAGES;
#else
int bufpages = 0;
#endif
int msgbufmapped = 0; /* set when safe to use msgbuf */
int maxmem; /* max memory per process */
int physmem; /* max supported memory, changes to actual */
int pmax_boardtype; /* Mother board type */
u_long le_iomem; /* 128K for lance chip via. ASIC */
u_long asc_iomem; /* and 7 * 8K buffers for the scsi */
u_long asic_base; /* Base address of I/O asic */
const struct callback *callv; /* pointer to PROM entry points */
void (*tc_enable_interrupt)();
extern int (*pmax_hardware_intr)();
void pmax_slot_hand_fill();
int kn02_intr(), kmin_intr(), xine_intr(), pmax_intr();
#ifdef DS5000_240
int kn03_intr();
#endif
extern int Mach_spl0(), Mach_spl1(), Mach_spl2(), Mach_spl3(), splhigh();
int (*Mach_splnet)() = splhigh;
int (*Mach_splbio)() = splhigh;
int (*Mach_splimp)() = splhigh;
int (*Mach_spltty)() = splhigh;
int (*Mach_splclock)() = splhigh;
int (*Mach_splstatclock)() = splhigh;
void (*tc_slot_hand_fill)();
extern volatile struct chiptime *Mach_clock_addr;
u_long kmin_tc3_imask, xine_tc3_imask;
#ifdef DS5000_240
u_long kn03_tc3_imask;
#endif
tc_option_t tc_slot_info[TC_MAX_LOGICAL_SLOTS];
static void asic_init();
extern void RemconsInit();
#ifdef DS5000
void kn02_enable_intr(), kn02_slot_hand_fill(),
kmin_enable_intr(), kmin_slot_hand_fill(),
xine_enable_intr(), xine_slot_hand_fill(),
tc_find_all_options();
#ifdef DS5000_240
void kn03_enable_intr(), kn03_slot_hand_fill();
#endif
#endif /* DS5000 */
/*
* safepri is a safe priority for sleep to set for a spin-wait
* during autoconfiguration or after a panic.
*/
int safepri = PSL_LOWIPL;
struct user *proc0paddr;
struct proc nullproc; /* for use by swtch_exit() */
/*
* Do all the stuff that locore normally does before calling main().
* Process arguments passed to us by the prom monitor.
* Return the first page address following the system.
*/
mach_init(argc, argv, code, cv)
int argc;
char *argv[];
u_int code;
const struct callback *cv;
{
register char *cp;
register int i;
register unsigned firstaddr;
register caddr_t v;
caddr_t start;
extern char edata[], end[];
extern char MachUTLBMiss[], MachUTLBMissEnd[];
extern char MachException[], MachExceptionEnd[];
#ifdef ATTR
extern char *pmap_attributes;
#endif
/* clear the BSS segment */
v = (caddr_t)pmax_round_page(end);
bzero(edata, v - edata);
/* check for direct boot from DS5000 PROM */
if (argc > 0 && strcmp(argv[0], "boot") == 0) {
argc--;
argv++;
}
/* look at argv[0] and compute bootdev */
makebootdev(argv[0]);
/*
* Look at arguments passed to us and compute boothowto.
*/
#ifdef GENERIC
boothowto = RB_SINGLE | RB_ASKNAME;
#else
boothowto = RB_SINGLE;
#endif
#ifdef KADB
boothowto |= RB_KDB;
#endif
if (argc > 1) {
for (i = 1; i < argc; i++) {
for (cp = argv[i]; *cp; cp++) {
switch (*cp) {
case 'a': /* autoboot */
boothowto &= ~RB_SINGLE;
break;
case 'd': /* use compiled in default root */
boothowto |= RB_DFLTROOT;
break;
case 'm': /* mini root present in memory */
boothowto |= RB_MINIROOT;
break;
case 'n': /* ask for names */
boothowto |= RB_ASKNAME;
break;
case 'N': /* don't ask for names */
boothowto &= ~RB_ASKNAME;
}
}
}
}
#ifdef MFS
/*
* Check to see if a mini-root was loaded into memory. It resides
* at the start of the next page just after the end of BSS.
*/
if (boothowto & RB_MINIROOT)
v += mfs_initminiroot(v);
#endif
/*
* Init mapping for u page(s) for proc[0], pm_tlbpid 1.
*/
start = v;
curproc->p_addr = proc0paddr = (struct user *)v;
curproc->p_md.md_regs = proc0paddr->u_pcb.pcb_regs;
firstaddr = MACH_CACHED_TO_PHYS(v);
for (i = 0; i < UPAGES; i++) {
MachTLBWriteIndexed(i,
(UADDR + (i << PGSHIFT)) | (1 << VMMACH_TLB_PID_SHIFT),
curproc->p_md.md_upte[i] = firstaddr | PG_V | PG_M);
firstaddr += NBPG;
}
v += UPAGES * NBPG;
MachSetPID(1);
/*
* init nullproc for swtch_exit().
* init mapping for u page(s), pm_tlbpid 0
* This could be used for an idle process.
*/
nullproc.p_addr = (struct user *)v;
nullproc.p_md.md_regs = ((struct user *)v)->u_pcb.pcb_regs;
for (i = 0; i < UPAGES; i++) {
nullproc.p_md.md_upte[i] = firstaddr | PG_V | PG_M;
firstaddr += NBPG;
}
v += UPAGES * NBPG;
/* clear pages for u areas */
bzero(start, v - start);
/*
* Copy down exception vector code.
*/
if (MachUTLBMissEnd - MachUTLBMiss > 0x80)
panic("startup: UTLB code too large");
bcopy(MachUTLBMiss, (char *)MACH_UTLB_MISS_EXC_VEC,
MachUTLBMissEnd - MachUTLBMiss);
bcopy(MachException, (char *)MACH_GEN_EXC_VEC,
MachExceptionEnd - MachException);
/*
* Clear out the I and D caches.
*/
MachConfigCache();
MachFlushCache();
/*
* Determine what model of computer we are running on.
*/
if (code == DEC_PROM_MAGIC) {
callv = cv;
i = (*cv->getsysid)();
cp = "";
} else {
callv = &callvec;
if (cp = (*callv->getenv)("systype"))
i = atoi(cp);
else {
cp = "";
i = 0;
}
}
/* check for MIPS based platform */
if (((i >> 24) & 0xFF) != 0x82) {
printf("Unknown System type '%s' 0x%x\n", cp, i);
boot(RB_HALT | RB_NOSYNC);
}
/* check what model platform we are running on */
pmax_boardtype = ((i >> 16) & 0xff);
switch (pmax_boardtype) {
case DS_PMAX: /* DS3100 Pmax */
/*
* Set up interrupt handling and I/O addresses.
*/
pmax_hardware_intr = pmax_intr;
Mach_splnet = Mach_spl1;
Mach_splbio = Mach_spl0;
Mach_splimp = Mach_spl1;
Mach_spltty = Mach_spl2;
Mach_splclock = Mach_spl3;
Mach_splstatclock = Mach_spl3;
Mach_clock_addr = (volatile struct chiptime *)
MACH_PHYS_TO_UNCACHED(KN01_SYS_CLOCK);
pmax_slot_hand_fill();
break;
#ifdef DS5000
case DS_3MAX: /* DS5000/200 3max */
{
volatile int *csr_addr =
(volatile int *)MACH_PHYS_TO_UNCACHED(KN02_SYS_CSR);
/* disable all TURBOchannel interrupts */
i = *csr_addr;
*csr_addr = i & ~(KN02_CSR_WRESERVED | 0xFF);
tc_slot_hand_fill = kn02_slot_hand_fill;
pmax_hardware_intr = kn02_intr;
tc_enable_interrupt = kn02_enable_intr;
Mach_splnet = Mach_spl0;
Mach_splbio = Mach_spl0;
Mach_splimp = Mach_spl0;
Mach_spltty = Mach_spl0;
Mach_splclock = Mach_spl1;
Mach_splstatclock = Mach_spl1;
Mach_clock_addr = (volatile struct chiptime *)
MACH_PHYS_TO_UNCACHED(KN02_SYS_CLOCK);
/*
* Probe the TURBOchannel to see what controllers are present.
*/
tc_find_all_options();
/* clear any memory errors from probes */
*(unsigned *)MACH_PHYS_TO_UNCACHED(KN02_SYS_ERRADR) = 0;
}
break;
case DS_3MIN: /* DS5000/1xx 3min */
tc_max_slot = KMIN_TC_MAX;
tc_min_slot = KMIN_TC_MIN;
tc_slot_phys_base[0] = KMIN_PHYS_TC_0_START;
tc_slot_phys_base[1] = KMIN_PHYS_TC_1_START;
tc_slot_phys_base[2] = KMIN_PHYS_TC_2_START;
asic_base = MACH_PHYS_TO_UNCACHED(KMIN_SYS_ASIC);
tc_slot_hand_fill = kmin_slot_hand_fill;
pmax_hardware_intr = kmin_intr;
tc_enable_interrupt = kmin_enable_intr;
/*
* Since all the motherboard interrupts come through the
* I/O ASIC, it has to be turned off for all the spls and
* since we don't know what kinds of devices are in the
* turbochannel option slots, just splhigh().
*/
Mach_splnet = splhigh;
Mach_splbio = splhigh;
Mach_splimp = splhigh;
Mach_spltty = splhigh;
Mach_splclock = splhigh;
Mach_splstatclock = splhigh;
Mach_clock_addr = (volatile struct chiptime *)
MACH_PHYS_TO_UNCACHED(KMIN_SYS_CLOCK);
/*
* Probe the TURBOchannel to see what controllers are present.
*/
tc_find_all_options();
/*
* Initialize interrupts.
*/
*(u_int *)ASIC_REG_IMSK(asic_base) = KMIN_IM0;
*(u_int *)ASIC_REG_INTR(asic_base) = 0;
/* clear any memory errors from probes */
*(unsigned *)MACH_PHYS_TO_UNCACHED(KMIN_REG_TIMEOUT) = 0;
break;
case DS_MAXINE: /* DS5000/xx maxine */
tc_max_slot = XINE_TC_MAX;
tc_min_slot = XINE_TC_MIN;
tc_slot_phys_base[0] = XINE_PHYS_TC_0_START;
tc_slot_phys_base[1] = XINE_PHYS_TC_1_START;
asic_base = MACH_PHYS_TO_UNCACHED(XINE_SYS_ASIC);
tc_slot_hand_fill = xine_slot_hand_fill;
pmax_hardware_intr = xine_intr;
tc_enable_interrupt = xine_enable_intr;
Mach_splnet = Mach_spl3;
Mach_splbio = Mach_spl3;
Mach_splimp = Mach_spl3;
Mach_spltty = Mach_spl3;
Mach_splclock = Mach_spl1;
Mach_splstatclock = Mach_spl1;
Mach_clock_addr = (volatile struct chiptime *)
MACH_PHYS_TO_UNCACHED(XINE_SYS_CLOCK);
/*
* Probe the TURBOchannel to see what controllers are present.
*/
tc_find_all_options();
/*
* Initialize interrupts.
*/
*(u_int *)ASIC_REG_IMSK(asic_base) = XINE_IM0;
*(u_int *)ASIC_REG_INTR(asic_base) = 0;
/* clear any memory errors from probes */
*(unsigned *)MACH_PHYS_TO_UNCACHED(XINE_REG_TIMEOUT) = 0;
break;
#ifdef DS5000_240
case DS_3MAXPLUS: /* DS5000/240 3max+ UNTESTED!! */
tc_max_slot = KN03_TC_MAX;
tc_min_slot = KN03_TC_MIN;
tc_slot_phys_base[0] = KN03_PHYS_TC_0_START;
tc_slot_phys_base[1] = KN03_PHYS_TC_1_START;
tc_slot_phys_base[2] = KN03_PHYS_TC_2_START;
asic_base = MACH_PHYS_TO_UNCACHED(KN03_SYS_ASIC);
tc_slot_hand_fill = kn03_slot_hand_fill;
pmax_hardware_intr = kn03_intr;
tc_enable_interrupt = kn03_enable_intr;
Mach_splnet = Mach_spl0;
Mach_splbio = Mach_spl0;
Mach_splimp = Mach_spl0;
Mach_spltty = Mach_spl0;
Mach_splclock = Mach_spl1;
Mach_splstatclock = Mach_spl1;
Mach_clock_addr = (volatile struct chiptime *)
MACH_PHYS_TO_UNCACHED(KN03_SYS_CLOCK);
/*
* Probe the TURBOchannel to see what controllers are present.
*/
tc_find_all_options();
/*
* Initialize interrupts.
*/
*(u_int *)ASIC_REG_IMSK(asic_base) = KN03_IM0;
*(u_int *)ASIC_REG_INTR(asic_base) = 0;
/* clear any memory errors from probes */
*(unsigned *)MACH_PHYS_TO_UNCACHED(KN03_SYS_ERRADR) = 0;
break;
#endif /* DS5000_240 */
#endif /* DS5000 */
default:
printf("kernel not configured for systype 0x%x\n", i);
boot(RB_HALT | RB_NOSYNC);
}
/*
* Find out how much memory is available.
*/
physmem = btoc(v - KERNBASE);
cp = (char *)MACH_PHYS_TO_UNCACHED(physmem << PGSHIFT);
while (cp < (char *)MACH_MAX_MEM_ADDR) {
if (badaddr(cp, 4))
break;
*(int *)cp = 0xa5a5a5a5;
/*
* Data will persist on the bus if we read it right
* away. Have to be tricky here.
*/
((int *)cp)[4] = 0x5a5a5a5a;
MachEmptyWriteBuffer();
if (*(int *)cp != 0xa5a5a5a5)
break;
cp += NBPG;
physmem++;
}
maxmem = physmem;
#if NLE > 0
/*
* Grab 128K at the top of physical memory for the lance chip
* on machines where it does dma through the I/O ASIC.
* It must be physically contiguous and aligned on a 128K boundary.
*/
if (pmax_boardtype == DS_3MIN || pmax_boardtype == DS_MAXINE ||
pmax_boardtype == DS_3MAXPLUS) {
maxmem -= btoc(128 * 1024);
le_iomem = (maxmem << PGSHIFT);
}
#endif /* NLE */
#if NASC > 0
/*
* Ditto for the scsi chip. There is probably a way to make asc.c
* do dma without these buffers, but it would require major
* re-engineering of the asc driver.
* They must be 8K in size and page aligned.
*/
if (pmax_boardtype == DS_3MIN || pmax_boardtype == DS_MAXINE ||
pmax_boardtype == DS_3MAXPLUS) {
maxmem -= btoc(ASC_NCMD * 8192);
asc_iomem = (maxmem << PGSHIFT);
}
#endif /* NASC */
/*
* Initialize error message buffer (at end of core).
*/
maxmem -= btoc(sizeof (struct msgbuf));
msgbufp = (struct msgbuf *)(MACH_PHYS_TO_CACHED(maxmem << PGSHIFT));
msgbufmapped = 1;
/*
* Allocate space for system data structures.
* The first available kernel virtual address is in "v".
* As pages of kernel virtual memory are allocated, "v" is incremented.
*
* These data structures are allocated here instead of cpu_startup()
* because physical memory is directly addressable. We don't have
* to map these into virtual address space.
*/
start = v;
#define valloc(name, type, num) \
(name) = (type *)v; v = (caddr_t)((name)+(num))
#define valloclim(name, type, num, lim) \
(name) = (type *)v; v = (caddr_t)((lim) = ((name)+(num)))
valloc(cfree, struct cblock, nclist);
valloc(callout, struct callout, ncallout);
valloc(swapmap, struct map, nswapmap = maxproc * 2);
#ifdef SYSVSHM
valloc(shmsegs, struct shmid_ds, shminfo.shmmni);
#endif
#ifdef ATTR
/* this is allocated here just to save a few bytes */
valloc(pmap_attributes, char, physmem);
#endif
/*
* Determine how many buffers to allocate.
* We allocate more buffer space than the BSD standard of
* using 10% of memory for the first 2 Meg, 5% of remaining.
* We just allocate a flat 10%. Insure a minimum of 16 buffers.
* We allocate 1/2 as many swap buffer headers as file i/o buffers.
*/
if (bufpages == 0)
bufpages = physmem / 10 / CLSIZE;
if (nbuf == 0) {
nbuf = bufpages;
if (nbuf < 16)
nbuf = 16;
}
if (nswbuf == 0) {
nswbuf = (nbuf / 2) &~ 1; /* force even */
if (nswbuf > 256)
nswbuf = 256; /* sanity */
}
valloc(swbuf, struct buf, nswbuf);
valloc(buf, struct buf, nbuf);
/*
* Clear allocated memory.
*/
v = (caddr_t)pmax_round_page(v);
bzero(start, v - start);
/*
* Initialize the virtual memory system.
*/
pmap_bootstrap((vm_offset_t)MACH_CACHED_TO_PHYS(v));
}
/*
* Console initialization: called early on from main,
* before vm init or startup. Do enough configuration
* to choose and initialize a console.
*/
consinit()
{
register int kbd, crt;
register char *oscon;
/*
* First get the "osconsole" environment variable.
*/
oscon = (*callv->getenv)("osconsole");
crt = kbd = -1;
if (oscon && *oscon >= '0' && *oscon <= '9') {
kbd = *oscon - '0';
cn_tab.cn_screen = 0;
while (*++oscon) {
if (*oscon == ',')
cn_tab.cn_screen = 1;
else if (cn_tab.cn_screen &&
*oscon >= '0' && *oscon <= '9') {
crt = kbd;
kbd = *oscon - '0';
break;
}
}
}
if (pmax_boardtype == DS_PMAX && kbd == 1)
cn_tab.cn_screen = 1;
/*
* First try the keyboard/crt cases then fall through to the
* remote serial lines.
*/
if (cn_tab.cn_screen) {
switch (pmax_boardtype) {
case DS_PMAX:
#if NDC > 0 && NPM > 0
if (pminit()) {
cn_tab.cn_dev = makedev(DCDEV, DCKBD_PORT);
cn_tab.cn_getc = KBDGetc;
cn_tab.cn_kbdgetc = dcGetc;
cn_tab.cn_putc = fbPutc;
cn_tab.cn_disabled = 0;
return;
}
#endif /* NDC and NPM */
goto remcons;
case DS_MAXINE:
#if NDTOP > 0
if (kbd == 3) {
cn_tab.cn_dev = makedev(DTOPDEV, 0);
cn_tab.cn_getc = dtopKBDGetc;
cn_tab.cn_putc = fbPutc;
} else
#endif /* NDTOP */
goto remcons;
#if NXCFB > 0
if (crt == 3 && xcfbinit()) {
cn_tab.cn_disabled = 0;
return;
}
#endif /* XCFB */
break;
case DS_3MAX:
#if NDC > 0
if (kbd == 7) {
cn_tab.cn_dev = makedev(DCDEV, DCKBD_PORT);
cn_tab.cn_getc = KBDGetc;
cn_tab.cn_kbdgetc = dcGetc;
cn_tab.cn_putc = fbPutc;
} else
#endif /* NDC */
goto remcons;
break;
case DS_3MIN:
case DS_3MAXPLUS:
#if NSCC > 0
if (kbd == 3) {
cn_tab.cn_dev = makedev(SCCDEV, SCCKBD_PORT);
cn_tab.cn_getc = KBDGetc;
cn_tab.cn_kbdgetc = sccGetc;
cn_tab.cn_putc = fbPutc;
} else
#endif /* NSCC */
goto remcons;
break;
default:
goto remcons;
};
/*
* Check for a suitable turbochannel frame buffer.
*/
if (tc_slot_info[crt].driver_name) {
#if NMFB > 0
if (strcmp(tc_slot_info[crt].driver_name, "mfb") == 0 &&
mfbinit(tc_slot_info[crt].k1seg_address)) {
cn_tab.cn_disabled = 0;
return;
}
#endif /* NMFB */
#if NCFB > 0
if (strcmp(tc_slot_info[crt].driver_name, "cfb") == 0 &&
cfbinit(tc_slot_info[crt].k1seg_address)) {
cn_tab.cn_disabled = 0;
return;
}
#endif /* NCFB */
printf("crt: %s not supported as console device\n",
tc_slot_info[crt].driver_name);
} else
printf("No crt console device in slot %d\n", crt);
}
remcons:
/*
* Configure a serial port as a remote console.
*/
cn_tab.cn_screen = 0;
switch (pmax_boardtype) {
case DS_PMAX:
#if NDC > 0
if (kbd == 4)
cn_tab.cn_dev = makedev(DCDEV, DCCOMM_PORT);
else
cn_tab.cn_dev = makedev(DCDEV, DCPRINTER_PORT);
cn_tab.cn_getc = dcGetc;
cn_tab.cn_putc = dcPutc;
#endif /* NDC */
break;
case DS_3MAX:
#if NDC > 0
cn_tab.cn_dev = makedev(DCDEV, DCPRINTER_PORT);
cn_tab.cn_getc = dcGetc;
cn_tab.cn_putc = dcPutc;
#endif /* NDC */
break;
case DS_3MIN:
case DS_3MAXPLUS:
#if NSCC > 0
cn_tab.cn_dev = makedev(SCCDEV, SCCCOMM3_PORT);
cn_tab.cn_getc = sccGetc;
cn_tab.cn_putc = sccPutc;
#endif /* NSCC */
break;
case DS_MAXINE:
#if NSCC > 0
cn_tab.cn_dev = makedev(SCCDEV, SCCCOMM2_PORT);
cn_tab.cn_getc = sccGetc;
cn_tab.cn_putc = sccPutc;
#endif /* NSCC */
break;
};
if (cn_tab.cn_dev == NODEV)
printf("Can't configure console!\n");
}
/*
* cpu_startup: allocate memory for variable-sized tables,
* initialize cpu, and do autoconfiguration.
*/
cpu_startup()
{
register unsigned i;
register caddr_t v;
int base, residual;
extern long Usrptsize;
extern struct map *useriomap;
#ifdef DEBUG
extern int pmapdebug;
int opmapdebug = pmapdebug;
#endif
vm_offset_t minaddr, maxaddr;
vm_size_t size;
#ifdef DEBUG
pmapdebug = 0;
#endif
/*
* Good {morning,afternoon,evening,night}.
*/
printf(version);
printf("real mem = %d\n", ctob(physmem));
/*
* Allocate virtual address space for file I/O buffers.
* Note they are different than the array of headers, 'buf',
* and usually occupy more virtual memory than physical.
*/
size = MAXBSIZE * nbuf;
buffer_map = kmem_suballoc(kernel_map, (vm_offset_t *)&buffers,
&maxaddr, size, FALSE);
minaddr = (vm_offset_t)buffers;
if (vm_map_find(buffer_map, vm_object_allocate(size), (vm_offset_t)0,
&minaddr, size, FALSE) != KERN_SUCCESS)
panic("startup: cannot allocate buffers");
base = bufpages / nbuf;
residual = bufpages % nbuf;
for (i = 0; i < nbuf; i++) {
vm_size_t curbufsize;
vm_offset_t curbuf;
/*
* First <residual> buffers get (base+1) physical pages
* allocated for them. The rest get (base) physical pages.
*
* The rest of each buffer occupies virtual space,
* but has no physical memory allocated for it.
*/
curbuf = (vm_offset_t)buffers + i * MAXBSIZE;
curbufsize = CLBYTES * (i < residual ? base+1 : base);
vm_map_pageable(buffer_map, curbuf, curbuf+curbufsize, FALSE);
vm_map_simplify(buffer_map, curbuf);
}
/*
* Allocate a submap for exec arguments. This map effectively
* limits the number of processes exec'ing at any time.
*/
exec_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr,
16*NCARGS, TRUE);
/*
* Allocate a submap for physio
*/
phys_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr,
VM_PHYS_SIZE, TRUE);
/*
* Finally, allocate mbuf pool. Since mclrefcnt is an off-size
* we use the more space efficient malloc in place of kmem_alloc.
*/
mclrefcnt = (char *)malloc(NMBCLUSTERS+CLBYTES/MCLBYTES,
M_MBUF, M_NOWAIT);
bzero(mclrefcnt, NMBCLUSTERS+CLBYTES/MCLBYTES);
mb_map = kmem_suballoc(kernel_map, (vm_offset_t *)&mbutl, &maxaddr,
VM_MBUF_SIZE, FALSE);
/*
* Initialize callouts
*/
callfree = callout;
for (i = 1; i < ncallout; i++)
callout[i-1].c_next = &callout[i];
callout[i-1].c_next = NULL;
#ifdef DEBUG
pmapdebug = opmapdebug;
#endif
printf("avail mem = %d\n", ptoa(cnt.v_free_count));
printf("using %d buffers containing %d bytes of memory\n",
nbuf, bufpages * CLBYTES);
/*
* Set up CPU-specific registers, cache, etc.
*/
initcpu();
/*
* Set up buffers, so they can be used to read disk labels.
*/
bufinit();
/*
* Configure the system.
*/
configure();
}
/*
* Set registers on exec.
* Clear all registers except sp, pc.
*/
setregs(p, entry, retval)
register struct proc *p;
u_long entry;
int retval[2];
{
int sp = p->p_md.md_regs[SP];
extern struct proc *machFPCurProcPtr;
bzero((caddr_t)p->p_md.md_regs, (FSR + 1) * sizeof(int));
p->p_md.md_regs[SP] = sp;
p->p_md.md_regs[PC] = entry & ~3;
p->p_md.md_regs[PS] = PSL_USERSET;
p->p_md.md_flags & ~MDP_FPUSED;
if (machFPCurProcPtr == p)
machFPCurProcPtr = (struct proc *)0;
}
/*
* WARNING: code in locore.s assumes the layout shown for sf_signum
* thru sf_handler so... don't screw with them!
*/
struct sigframe {
int sf_signum; /* signo for handler */
int sf_code; /* additional info for handler */
struct sigcontext *sf_scp; /* context ptr for handler */
sig_t sf_handler; /* handler addr for u_sigc */
struct sigcontext sf_sc; /* actual context */
};
#ifdef DEBUG
int sigdebug = 0;
int sigpid = 0;
#define SDB_FOLLOW 0x01
#define SDB_KSTACK 0x02
#define SDB_FPSTATE 0x04
#endif
/*
* Send an interrupt to process.
*/
void
sendsig(catcher, sig, mask, code)
sig_t catcher;
int sig, mask;
unsigned code;
{
register struct proc *p = curproc;
register struct sigframe *fp;
register int *regs;
register struct sigacts *psp = p->p_sigacts;
int oonstack, fsize;
struct sigcontext ksc;
extern char sigcode[], esigcode[];
regs = p->p_md.md_regs;
oonstack = psp->ps_sigstk.ss_flags & SA_ONSTACK;
/*
* Allocate and validate space for the signal handler
* context. Note that if the stack is in data space, the
* call to grow() is a nop, and the copyout()
* will fail if the process has not already allocated
* the space with a `brk'.
*/
fsize = sizeof(struct sigframe);
if ((psp->ps_flags & SAS_ALTSTACK) &&
(psp->ps_sigstk.ss_flags & SA_ONSTACK) == 0 &&
(psp->ps_sigonstack & sigmask(sig))) {
fp = (struct sigframe *)(psp->ps_sigstk.ss_base +
psp->ps_sigstk.ss_size - fsize);
psp->ps_sigstk.ss_flags |= SA_ONSTACK;
} else
fp = (struct sigframe *)(regs[SP] - fsize);
if ((unsigned)fp <= USRSTACK - ctob(p->p_vmspace->vm_ssize))
(void)grow(p, (unsigned)fp);
#ifdef DEBUG
if ((sigdebug & SDB_FOLLOW) ||
(sigdebug & SDB_KSTACK) && p->p_pid == sigpid)
printf("sendsig(%d): sig %d ssp %x usp %x scp %x\n",
p->p_pid, sig, &oonstack, fp, &fp->sf_sc);
#endif
/*
* Build the signal context to be used by sigreturn.
*/
ksc.sc_onstack = oonstack;
ksc.sc_mask = mask;
ksc.sc_pc = regs[PC];
ksc.sc_regs[ZERO] = 0xACEDBADE; /* magic number */
bcopy((caddr_t)&regs[1], (caddr_t)&ksc.sc_regs[1],
sizeof(ksc.sc_regs) - sizeof(int));
ksc.sc_fpused = p->p_md.md_flags & MDP_FPUSED;
if (ksc.sc_fpused) {
extern struct proc *machFPCurProcPtr;
/* if FPU has current state, save it first */
if (p == machFPCurProcPtr)
MachSaveCurFPState(p);
bcopy((caddr_t)&p->p_md.md_regs[F0], (caddr_t)ksc.sc_fpregs,
sizeof(ksc.sc_fpregs));
}
if (copyout((caddr_t)&ksc, (caddr_t)&fp->sf_sc, sizeof(ksc))) {
/*
* Process has trashed its stack; give it an illegal
* instruction to halt it in its tracks.
*/
SIGACTION(p, SIGILL) = SIG_DFL;
sig = sigmask(SIGILL);
p->p_sigignore &= ~sig;
p->p_sigcatch &= ~sig;
p->p_sigmask &= ~sig;
psignal(p, SIGILL);
return;
}
/*
* Build the argument list for the signal handler.
*/
regs[A0] = sig;
regs[A1] = code;
regs[A2] = (int)&fp->sf_sc;
regs[A3] = (int)catcher;
regs[PC] = (int)catcher;
regs[SP] = (int)fp;
/*
* Signal trampoline code is at base of user stack.
*/
regs[RA] = (int)PS_STRINGS - (esigcode - sigcode);
#ifdef DEBUG
if ((sigdebug & SDB_FOLLOW) ||
(sigdebug & SDB_KSTACK) && p->p_pid == sigpid)
printf("sendsig(%d): sig %d returns\n",
p->p_pid, sig);
#endif
}
/*
* System call to cleanup state after a signal
* has been taken. Reset signal mask and
* stack state from context left by sendsig (above).
* Return to previous pc and psl as specified by
* context left by sendsig. Check carefully to
* make sure that the user has not modified the
* psl to gain improper priviledges or to cause
* a machine fault.
*/
struct sigreturn_args {
struct sigcontext *sigcntxp;
};
/* ARGSUSED */
sigreturn(p, uap, retval)
struct proc *p;
struct sigreturn_args *uap;
int *retval;
{
register struct sigcontext *scp;
register int *regs;
struct sigcontext ksc;
int error;
scp = uap->sigcntxp;
#ifdef DEBUG
if (sigdebug & SDB_FOLLOW)
printf("sigreturn: pid %d, scp %x\n", p->p_pid, scp);
#endif
regs = p->p_md.md_regs;
/*
* Test and fetch the context structure.
* We grab it all at once for speed.
*/
error = copyin((caddr_t)scp, (caddr_t)&ksc, sizeof(ksc));
if (error || ksc.sc_regs[ZERO] != 0xACEDBADE) {
#ifdef DEBUG
if (!(sigdebug & SDB_FOLLOW))
printf("sigreturn: pid %d, scp %x\n", p->p_pid, scp);
printf(" old sp %x ra %x pc %x\n",
regs[SP], regs[RA], regs[PC]);
printf(" new sp %x ra %x pc %x err %d z %x\n",
ksc.sc_regs[SP], ksc.sc_regs[RA], ksc.sc_regs[PC],
error, ksc.sc_regs[ZERO]);
#endif
return (EINVAL);
}
scp = &ksc;
/*
* Restore the user supplied information
*/
if (scp->sc_onstack & 01)
p->p_sigacts->ps_sigstk.ss_flags |= SA_ONSTACK;
else
p->p_sigacts->ps_sigstk.ss_flags &= ~SA_ONSTACK;
p->p_sigmask = scp->sc_mask &~ sigcantmask;
regs[PC] = scp->sc_pc;
bcopy((caddr_t)&scp->sc_regs[1], (caddr_t)&regs[1],
sizeof(scp->sc_regs) - sizeof(int));
if (scp->sc_fpused)
bcopy((caddr_t)scp->sc_fpregs, (caddr_t)&p->p_md.md_regs[F0],
sizeof(scp->sc_fpregs));
return (EJUSTRETURN);
}
int waittime = -1;
boot(howto)
register int howto;
{
/* take a snap shot before clobbering any registers */
if (curproc)
savectx(curproc->p_addr, 0);
howto |= RB_HALT; /* XXX */
boothowto = howto;
if ((howto&RB_NOSYNC) == 0 && waittime < 0) {
register struct buf *bp;
int iter, nbusy;
waittime = 0;
(void) spl0();
printf("syncing disks... ");
/*
* Release vnodes held by texts before sync.
*/
if (panicstr == 0)
vnode_pager_umount(NULL);
#ifdef notdef
#include "fd.h"
#if NFD > 0
fdshutdown();
#endif
#endif
sync(&proc0, (void *)NULL, (int *)NULL);
for (iter = 0; iter < 20; iter++) {
nbusy = 0;
for (bp = &buf[nbuf]; --bp >= buf; )
if ((bp->b_flags & (B_BUSY|B_INVAL)) == B_BUSY)
nbusy++;
if (nbusy == 0)
break;
printf("%d ", nbusy);
DELAY(40000 * iter);
}
if (nbusy)
printf("giving up\n");
else
printf("done\n");
/*
* If we've been adjusting the clock, the todr
* will be out of synch; adjust it now.
*/
resettodr();
}
(void) splhigh(); /* extreme priority */
if (callv != &callvec) {
if (howto & RB_HALT)
(*callv->rex)('h');
else {
if (howto & RB_DUMP)
dumpsys();
(*callv->rex)('b');
}
} else if (howto & RB_HALT) {
volatile void (*f)() = (volatile void (*)())DEC_PROM_REINIT;
(*f)(); /* jump back to prom monitor */
} else {
volatile void (*f)() = (volatile void (*)())DEC_PROM_AUTOBOOT;
if (howto & RB_DUMP)
dumpsys();
(*f)(); /* jump back to prom monitor and do 'auto' cmd */
}
/*NOTREACHED*/
}
int dumpmag = 0x8fca0101; /* magic number for savecore */
int dumpsize = 0; /* also for savecore */
long dumplo = 0;
dumpconf()
{
int nblks;
dumpsize = physmem;
if (dumpdev != NODEV && bdevsw[major(dumpdev)].d_psize) {
nblks = (*bdevsw[major(dumpdev)].d_psize)(dumpdev);
if (dumpsize > btoc(dbtob(nblks - dumplo)))
dumpsize = btoc(dbtob(nblks - dumplo));
else if (dumplo == 0)
dumplo = nblks - btodb(ctob(physmem));
}
/*
* Don't dump on the first CLBYTES (why CLBYTES?)
* in case the dump device includes a disk label.
*/
if (dumplo < btodb(CLBYTES))
dumplo = btodb(CLBYTES);
}
/*
* Doadump comes here after turning off memory management and
* getting on the dump stack, either when called above, or by
* the auto-restart code.
*/
dumpsys()
{
int error;
msgbufmapped = 0;
if (dumpdev == NODEV)
return;
/*
* For dumps during autoconfiguration,
* if dump device has already configured...
*/
if (dumpsize == 0)
dumpconf();
if (dumplo < 0)
return;
printf("\ndumping to dev %x, offset %d\n", dumpdev, dumplo);
printf("dump ");
switch (error = (*bdevsw[major(dumpdev)].d_dump)(dumpdev)) {
case ENXIO:
printf("device bad\n");
break;
case EFAULT:
printf("device not ready\n");
break;
case EINVAL:
printf("area improper\n");
break;
case EIO:
printf("i/o error\n");
break;
default:
printf("error %d\n", error);
break;
case 0:
printf("succeeded\n");
}
}
/*
* Return the best possible estimate of the time in the timeval
* to which tvp points. Unfortunately, we can't read the hardware registers.
* We guarantee that the time will be greater than the value obtained by a
* previous call.
*/
microtime(tvp)
register struct timeval *tvp;
{
int s = splclock();
static struct timeval lasttime;
*tvp = time;
#ifdef notdef
tvp->tv_usec += clkread();
while (tvp->tv_usec > 1000000) {
tvp->tv_sec++;
tvp->tv_usec -= 1000000;
}
#endif
if (tvp->tv_sec == lasttime.tv_sec &&
tvp->tv_usec <= lasttime.tv_usec &&
(tvp->tv_usec = lasttime.tv_usec + 1) > 1000000) {
tvp->tv_sec++;
tvp->tv_usec -= 1000000;
}
lasttime = *tvp;
splx(s);
}
initcpu()
{
register volatile struct chiptime *c;
int i;
/* disable clock interrupts (until startrtclock()) */
c = Mach_clock_addr;
c->regb = REGB_DATA_MODE | REGB_HOURS_FORMAT;
i = c->regc;
spl0(); /* safe to turn interrupts on now */
return (i);
}
/*
* Convert an ASCII string into an integer.
*/
int
atoi(s)
char *s;
{
int c;
unsigned base = 10, d;
int neg = 0, val = 0;
if (s == 0 || (c = *s++) == 0)
goto out;
/* skip spaces if any */
while (c == ' ' || c == '\t')
c = *s++;
/* parse sign, allow more than one (compat) */
while (c == '-') {
neg = !neg;
c = *s++;
}
/* parse base specification, if any */
if (c == '0') {
c = *s++;
switch (c) {
case 'X':
case 'x':
base = 16;
break;
case 'B':
case 'b':
base = 2;
break;
default:
base = 8;
}
}
/* parse number proper */
for (;;) {
if (c >= '0' && c <= '9')
d = c - '0';
else if (c >= 'a' && c <= 'z')
d = c - 'a' + 10;
else if (c >= 'A' && c <= 'Z')
d = c - 'A' + 10;
else
break;
val *= base;
val += d;
c = *s++;
}
if (neg)
val = -val;
out:
return val;
}
/*
* Fill in the pmax addresses by hand.
*/
static struct pmax_address {
char *pmax_name;
char *pmax_addr;
int pmax_pri;
} pmax_addresses[] = {
{ "pm", (char *)MACH_PHYS_TO_CACHED(KN01_PHYS_FBUF_START), 3 },
{ "dc", (char *)MACH_PHYS_TO_UNCACHED(KN01_SYS_DZ), 2 },
{ "le", (char *)MACH_PHYS_TO_UNCACHED(KN01_SYS_LANCE), 1 },
{ "sii",(char *)MACH_PHYS_TO_UNCACHED(KN01_SYS_SII), 0 },
{ (char *)0, },
};
void
pmax_slot_hand_fill()
{
register struct pmax_ctlr *cp;
register struct driver *drp;
register struct pmax_address *pmap;
/*
* Find the device driver entry and fill in the address.
*/
for (cp = pmax_cinit; drp = cp->pmax_driver; cp++) {
for (pmap = pmax_addresses; pmap->pmax_name; pmap++) {
if (strcmp(drp->d_name, pmap->pmax_name))
continue;
if (cp->pmax_addr == (char *)QUES) {
cp->pmax_addr = pmap->pmax_addr;
cp->pmax_pri = pmap->pmax_pri;
continue;
}
}
}
}
#ifdef DS5000
/*
* Mach Operating System
* Copyright (c) 1991,1990,1989 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*
* Driver map: associates a device driver to an option type.
* Drivers name are (arbitrarily) defined in each driver and
* used in the various config tables.
*/
struct drivers_map {
char module_name[TC_ROM_LLEN]; /* from ROM, literally! */
char *driver_name; /* in bus_??_init[] tables */
} tc_drivers_map[] = {
{ "KN02 ", "dc"}, /* (*) 3max system board (with DC) */
{ "PMAD-AA ", "le"}, /* Ether */
{ "PMAZ-AA ", "asc"}, /* SCSI */
{ "PMAG-AA ", "mfb"}, /* Mono Frame Buffer */
{ "PMAG-BA ", "cfb"}, /* Color Frame Buffer */
{ "PMAG-CA ", "ga"}, /* 2D graphic board */
{ "PMAG-DA ", "gq"}, /* 3D graphic board (LM) */
{ "PMAG-FA ", "gq"}, /* 3D graphic board (HE) */
{ "PMAG-DV ", "xcfb"}, /* (*) maxine Color Frame Buffer */
{ "Z8530 ", "scc"}, /* (*) 3min/maxine serial lines */
{ "ASIC ", "asic"}, /* (*) 3min/maxine DMA controller */
{ "XINE-FDC", "fdc"}, /* (*) maxine floppy controller */
{ "DTOP ", "dtop"}, /* (*) maxine desktop bus */
{ "AMD79c30", "isdn"}, /* (*) maxine ISDN chip */
{ "XINE-FRC", "frc"}, /* (*) maxine free-running counter */
{ "", 0} /* list end */
};
/*
* Identify an option on the TC. Looks at the mandatory
* info in the option's ROM and checks it.
*/
#ifdef DEBUG
int tc_verbose = 0;
#endif
static int
tc_identify_option(addr, slot, complain)
tc_rommap_t *addr;
tc_option_t *slot;
int complain;
{
register int i;
unsigned char width;
char firmwr[TC_ROM_LLEN+1], vendor[TC_ROM_LLEN+1],
module[TC_ROM_LLEN+1], host_type[TC_ROM_SLEN+1];
/*
* We do not really use the 'width' info, but take advantage
* of the restriction that the spec impose on the portion
* of the ROM that maps between +0x3e0 and +0x470, which
* is the only piece we need to look at.
*/
width = addr->rom_width.value;
switch (width) {
case 1:
case 2:
case 4:
break;
default:
#ifdef DEBUG
if (tc_verbose && complain)
printf("%s (x%x) at x%x\n", "Invalid ROM width",
width, addr);
#endif
return (0);
}
if (addr->rom_stride.value != 4) {
#ifdef DEBUG
if (tc_verbose && complain)
printf("%s (x%x) at x%x\n", "Invalid ROM stride",
addr->rom_stride.value, addr);
#endif
return (0);
}
if ((addr->test_data[0] != 0x55) ||
(addr->test_data[4] != 0x00) ||
(addr->test_data[8] != 0xaa) ||
(addr->test_data[12] != 0xff)) {
#ifdef DEBUG
if (tc_verbose && complain)
printf("%s x%x\n", "Test pattern failed, option at",
addr);
#endif
return (0);
}
for (i = 0; i < TC_ROM_LLEN; i++) {
firmwr[i] = addr->firmware_rev[i].value;
vendor[i] = addr->vendor_name[i].value;
module[i] = addr->module_name[i].value;
if (i >= TC_ROM_SLEN)
continue;
host_type[i] = addr->host_firmware_type[i].value;
}
firmwr[TC_ROM_LLEN] = vendor[TC_ROM_LLEN] =
module[TC_ROM_LLEN] = host_type[TC_ROM_SLEN] = '\0';
#ifdef DEBUG
if (tc_verbose)
printf("%s %s '%s' at 0x%x\n %s %s %s '%s'\n %s %d %s %d %s\n",
"Found a", vendor, module, addr,
"Firmware rev.", firmwr,
"diagnostics for a", host_type,
"ROM size is", addr->rom_size.value << 3,
"Kbytes, uses", addr->slot_size.value, "TC slot(s)");
#endif
bcopy(module, slot->module_name, TC_ROM_LLEN);
bcopy(vendor, slot->module_id, TC_ROM_LLEN);
bcopy(firmwr, &slot->module_id[TC_ROM_LLEN], TC_ROM_LLEN);
slot->slot_size = addr->slot_size.value;
slot->rom_width = width;
return (1);
}
/*
* TURBOchannel autoconf procedure. Finds in one sweep what is
* hanging on the bus and fills in the tc_slot_info array.
* This is only the first part of the autoconf scheme, at this
* time we are basically only looking for a graphics board to
* use as system console (all workstations).
*/
void
tc_find_all_options()
{
register int i;
u_long addr;
int found;
register tc_option_t *sl;
struct drivers_map *map;
register struct pmax_ctlr *cp;
register struct driver *drp;
/*
* Take a look at the bus
*/
bzero(tc_slot_info, sizeof(tc_slot_info));
for (i = tc_max_slot; i >= tc_min_slot;) {
addr = MACH_PHYS_TO_UNCACHED(tc_slot_phys_base[i]);
found = tc_probe_slot(addr, &tc_slot_info[i]);
if (found) {
/*
* Found a slot, make a note of it
*/
tc_slot_info[i].present = 1;
tc_slot_info[i].k1seg_address = addr;
}
i -= tc_slot_info[i].slot_size;
}
/*
* Some slots (e.g. the system slot on 3max) might require
* hand-filling. If so, do it now.
*/
if (tc_slot_hand_fill)
(*tc_slot_hand_fill) (tc_slot_info);
/*
* Now for each alive slot see if we have a device driver that
* handles it. This is done in "priority order", meaning that
* always present devices are at higher slot numbers on all
* current TC machines, and option slots are at lowest numbers.
*/
for (i = TC_MAX_LOGICAL_SLOTS - 1; i >= 0; i--) {
sl = &tc_slot_info[i];
if (!sl->present)
continue;
found = FALSE;
for (map = tc_drivers_map; map->driver_name; map++) {
if (bcmp(sl->module_name, map->module_name, TC_ROM_LLEN))
continue;
sl->driver_name = map->driver_name;
found = TRUE;
break;
}
if (!found) {
printf("%s %s %s\n",
"Cannot associate a device driver to",
sl->module_name, ". Will (try to) ignore it.");
sl->present = 0;
continue;
}
/*
* Find the device driver entry and fill in the address.
*/
for (cp = pmax_cinit; drp = cp->pmax_driver; cp++) {
if (strcmp(drp->d_name, map->driver_name))
continue;
if (cp->pmax_addr == (char *)QUES) {
cp->pmax_addr = (char *)sl->k1seg_address;
cp->pmax_pri = i;
/*
* Only enable interrupts if there is an
* interrupt handler for it. (e.g., PMAG-BA
* can't disable the vertical retrace interrupt
* and we might want to ignore it).
*/
if (drp->d_intr)
(*tc_enable_interrupt)(i, 1);
continue;
}
if (cp->pmax_addr != (char *)sl->k1seg_address) {
cp->pmax_addr = (char *)QUES;
printf("%s: device not at configued address (expected at %x, found at %x)\n",
drp->d_name,
cp->pmax_addr, sl->k1seg_address);
}
}
}
}
/*
* Probe a slot in the TURBOchannel. Return TRUE if a valid option
* is present, FALSE otherwise. A side-effect is to fill the slot
* descriptor with the size of the option, whether it is
* recognized or not.
*/
int
tc_probe_slot(addr, slot)
caddr_t addr;
tc_option_t *slot;
{
int i;
static unsigned tc_offset_rom[] = {
TC_OFF_PROTO_ROM, TC_OFF_ROM
};
#define TC_N_OFFSETS sizeof(tc_offset_rom)/sizeof(unsigned)
slot->slot_size = 1;
for (i = 0; i < TC_N_OFFSETS; i++) {
if (badaddr(addr + tc_offset_rom[i], 4))
continue;
/* complain only on last chance */
if (tc_identify_option((tc_rommap_t *)(addr + tc_offset_rom[i]),
slot, i == (TC_N_OFFSETS-1)))
return (1);
}
return (0);
#undef TC_N_OFFSETS
}
/*
* Enable/Disable interrupts for a TURBOchannel slot.
*/
void
kn02_enable_intr(slotno, on)
register int slotno;
int on;
{
register volatile int *p_csr =
(volatile int *)MACH_PHYS_TO_UNCACHED(KN02_SYS_CSR);
int csr;
int s;
slotno = 1 << (slotno + KN02_CSR_IOINTEN_SHIFT);
s = Mach_spl0();
csr = *p_csr & ~(KN02_CSR_WRESERVED | 0xFF);
if (on)
*p_csr = csr | slotno;
else
*p_csr = csr & ~slotno;
splx(s);
}
/*
* Object:
* kmin_enable_intr EXPORTED function
*
* Enable/Disable interrupts from a TURBOchannel slot.
*
* We pretend we actually have 8 slots even if we really have
* only 4: TCslots 0-2 maps to slots 0-2, TCslot3 maps to
* slots 3-7 (see kmin_slot_hand_fill).
*/
void
kmin_enable_intr(slotno, on)
register unsigned int slotno;
int on;
{
register unsigned mask;
switch (slotno) {
case 0:
case 1:
case 2:
return;
case KMIN_SCSI_SLOT:
mask = (KMIN_INTR_SCSI | KMIN_INTR_SCSI_PTR_LOAD |
KMIN_INTR_SCSI_OVRUN | KMIN_INTR_SCSI_READ_E);
break;
case KMIN_LANCE_SLOT:
mask = KMIN_INTR_LANCE;
break;
case KMIN_SCC0_SLOT:
mask = KMIN_INTR_SCC_0;
break;
case KMIN_SCC1_SLOT:
mask = KMIN_INTR_SCC_1;
break;
case KMIN_ASIC_SLOT:
mask = KMIN_INTR_ASIC;
break;
default:
return;
}
if (on)
kmin_tc3_imask |= mask;
else
kmin_tc3_imask &= ~mask;
}
/*
* Object:
* xine_enable_intr EXPORTED function
*
* Enable/Disable interrupts from a TURBOchannel slot.
*
* We pretend we actually have 11 slots even if we really have
* only 3: TCslots 0-1 maps to slots 0-1, TCslot 2 is used for
* the system (TCslot3), TCslot3 maps to slots 3-10
* (see xine_slot_hand_fill).
* Note that all these interrupts come in via the IMR.
*/
void
xine_enable_intr(slotno, on)
register unsigned int slotno;
int on;
{
register unsigned mask;
switch (slotno) {
case 0: /* a real slot, but */
mask = XINE_INTR_TC_0;
break;
case 1: /* a real slot, but */
mask = XINE_INTR_TC_1;
break;
case XINE_FLOPPY_SLOT:
mask = XINE_INTR_FLOPPY;
break;
case XINE_SCSI_SLOT:
mask = (XINE_INTR_SCSI | XINE_INTR_SCSI_PTR_LOAD |
XINE_INTR_SCSI_OVRUN | XINE_INTR_SCSI_READ_E);
break;
case XINE_LANCE_SLOT:
mask = XINE_INTR_LANCE;
break;
case XINE_SCC0_SLOT:
mask = XINE_INTR_SCC_0;
break;
case XINE_DTOP_SLOT:
mask = XINE_INTR_DTOP_RX;
break;
case XINE_ISDN_SLOT:
mask = XINE_INTR_ISDN;
break;
case XINE_ASIC_SLOT:
mask = XINE_INTR_ASIC;
break;
default:
return;/* ignore */
}
if (on)
xine_tc3_imask |= mask;
else
xine_tc3_imask &= ~mask;
}
#ifdef DS5000_240
/*
* UNTESTED!!
* Object:
* kn03_enable_intr EXPORTED function
*
* Enable/Disable interrupts from a TURBOchannel slot.
*
* We pretend we actually have 8 slots even if we really have
* only 4: TCslots 0-2 maps to slots 0-2, TCslot3 maps to
* slots 3-7 (see kn03_slot_hand_fill).
*/
void
kn03_enable_intr(slotno, on)
register unsigned int slotno;
int on;
{
register unsigned mask;
switch (slotno) {
case 0:
case 1:
case 2:
return;
case KN03_SCSI_SLOT:
mask = (KN03_INTR_SCSI | KN03_INTR_SCSI_PTR_LOAD |
KN03_INTR_SCSI_OVRUN | KN03_INTR_SCSI_READ_E);
break;
case KN03_LANCE_SLOT:
mask = KN03_INTR_LANCE;
break;
case KN03_SCC0_SLOT:
mask = KN03_INTR_SCC_0;
break;
case KN03_SCC1_SLOT:
mask = KN03_INTR_SCC_1;
break;
case KN03_ASIC_SLOT:
mask = KN03_INTR_ASIC;
break;
default:
return;
}
if (on)
kn03_tc3_imask |= mask;
else
kn03_tc3_imask &= ~mask;
}
#endif /* DS5000_240 */
/*
* Object:
* kn02_slot_hand_fill EXPORTED function
*
* Fill in by hand the info for TC slots that are non-standard.
* This is basically just the system slot on a 3max, it does not
* look to me like it follows the TC rules although some of the
* required info is indeed there.
*
*/
void
kn02_slot_hand_fill(slot)
tc_option_t *slot;
{
slot[7].present = 1;
slot[7].slot_size = 1;
slot[7].rom_width = 1;
#if unsafe
bcopy(0xbffc0410, slot[7].module_name, TC_ROM_LLEN+1);
#endif
bcopy("KN02 ", slot[7].module_name, TC_ROM_LLEN+1);
bcopy("DEC xxxx", slot[7].module_id, TC_ROM_LLEN+1);
slot[7].k1seg_address = MACH_PHYS_TO_UNCACHED(KN02_SYS_DZ);
}
/*
* Object:
* kmin_slot_hand_fill EXPORTED function
*
* Fill in by hand the info for TC slots that are non-standard.
* This is the system slot on a 3min, which we think of as a
* set of non-regular size TC slots.
*
*/
void
kmin_slot_hand_fill(slot)
tc_option_t *slot;
{
register int i;
for (i = KMIN_SCSI_SLOT; i < KMIN_ASIC_SLOT+1; i++) {
slot[i].present = 1;
slot[i].slot_size = 1;
slot[i].rom_width = 1;
slot[i].unit = 0;
bcopy("DEC KMIN", slot[i].module_id, TC_ROM_LLEN+1);
}
/* scsi */
bcopy("PMAZ-AA ", slot[KMIN_SCSI_SLOT].module_name, TC_ROM_LLEN+1);
slot[KMIN_SCSI_SLOT].k1seg_address =
MACH_PHYS_TO_UNCACHED(KMIN_SYS_SCSI);
/* lance */
bcopy("PMAD-AA ", slot[KMIN_LANCE_SLOT].module_name, TC_ROM_LLEN+1);
slot[KMIN_LANCE_SLOT].k1seg_address = 0;
/* scc */
bcopy("Z8530 ", slot[KMIN_SCC0_SLOT].module_name, TC_ROM_LLEN+1);
slot[KMIN_SCC0_SLOT].k1seg_address =
MACH_PHYS_TO_UNCACHED(KMIN_SYS_SCC_0);
slot[KMIN_SCC1_SLOT].unit = 1;
bcopy("Z8530 ", slot[KMIN_SCC1_SLOT].module_name, TC_ROM_LLEN+1);
slot[KMIN_SCC1_SLOT].k1seg_address =
MACH_PHYS_TO_UNCACHED(KMIN_SYS_SCC_1);
/* asic */
bcopy("ASIC ", slot[KMIN_ASIC_SLOT].module_name, TC_ROM_LLEN+1);
slot[KMIN_ASIC_SLOT].k1seg_address =
MACH_PHYS_TO_UNCACHED(KMIN_SYS_ASIC);
asic_init(0);
}
/*
* Object:
* xine_slot_hand_fill EXPORTED function
*
* Fill in by hand the info for TC slots that are non-standard.
* This is the system slot on a 3min, which we think of as a
* set of non-regular size TC slots.
*
*/
void
xine_slot_hand_fill(slot)
tc_option_t *slot;
{
register int i;
for (i = XINE_FLOPPY_SLOT; i < XINE_FRC_SLOT+1; i++) {
slot[i].present = 1;
slot[i].slot_size = 1;
slot[i].rom_width = 1;
slot[i].unit = 0;
bcopy("DEC XINE", slot[i].module_id, TC_ROM_LLEN+1);
}
/* floppy */
bcopy("XINE-FDC", slot[XINE_FLOPPY_SLOT].module_name, TC_ROM_LLEN+1);
slot[XINE_FLOPPY_SLOT].k1seg_address =
MACH_PHYS_TO_UNCACHED(XINE_SYS_FLOPPY);
/* scsi */
bcopy("PMAZ-AA ", slot[XINE_SCSI_SLOT].module_name, TC_ROM_LLEN+1);
slot[XINE_SCSI_SLOT].k1seg_address =
MACH_PHYS_TO_UNCACHED(XINE_SYS_SCSI);
/* lance */
bcopy("PMAD-AA ", slot[XINE_LANCE_SLOT].module_name, TC_ROM_LLEN+1);
slot[XINE_LANCE_SLOT].k1seg_address =
MACH_PHYS_TO_UNCACHED(XINE_SYS_LANCE);
/* scc */
bcopy("Z8530 ", slot[XINE_SCC0_SLOT].module_name, TC_ROM_LLEN+1);
slot[XINE_SCC0_SLOT].k1seg_address =
MACH_PHYS_TO_UNCACHED(XINE_SYS_SCC_0);
/* Desktop */
bcopy("DTOP ", slot[XINE_DTOP_SLOT].module_name, TC_ROM_LLEN+1);
slot[XINE_DTOP_SLOT].k1seg_address =
MACH_PHYS_TO_UNCACHED(XINE_SYS_DTOP+0x20000); /* why? */
/* ISDN */
bcopy("AMD79c30", slot[XINE_ISDN_SLOT].module_name, TC_ROM_LLEN+1);
slot[XINE_ISDN_SLOT].k1seg_address =
MACH_PHYS_TO_UNCACHED(XINE_SYS_ISDN);
/* Video */
bcopy("PMAG-DV ", slot[XINE_CFB_SLOT].module_name, TC_ROM_LLEN+1);
slot[XINE_CFB_SLOT].k1seg_address =
MACH_PHYS_TO_CACHED(XINE_PHYS_CFB_START);
/* asic */
bcopy("ASIC ", slot[XINE_ASIC_SLOT].module_name, TC_ROM_LLEN+1);
slot[XINE_ASIC_SLOT].k1seg_address =
MACH_PHYS_TO_UNCACHED(XINE_SYS_ASIC);
/* free-running counter (high resolution mapped time) */
bcopy("XINE-FRC", slot[XINE_FRC_SLOT].module_name, TC_ROM_LLEN+1);
slot[XINE_FRC_SLOT].k1seg_address =
MACH_PHYS_TO_UNCACHED(XINE_REG_FCTR);
asic_init(1);
}
#ifdef DS5000_240
/*
* UNTESTED!!
* Object:
* kn03_slot_hand_fill EXPORTED function
*
* Fill in by hand the info for TC slots that are non-standard.
* This is the system slot on a 3max+, which we think of as a
* set of non-regular size TC slots.
*
*/
void
kn03_slot_hand_fill(slot)
tc_option_t *slot;
{
register int i;
for (i = KN03_SCSI_SLOT; i < KN03_ASIC_SLOT+1; i++) {
slot[i].present = 1;
slot[i].slot_size = 1;
slot[i].rom_width = 1;
slot[i].unit = 0;
bcopy("DEC KN03", slot[i].module_id, TC_ROM_LLEN+1);
}
/* scsi */
bcopy("PMAZ-AA ", slot[KN03_SCSI_SLOT].module_name, TC_ROM_LLEN+1);
slot[KN03_SCSI_SLOT].k1seg_address =
MACH_PHYS_TO_UNCACHED(KN03_SYS_SCSI);
/* lance */
bcopy("PMAD-AA ", slot[KN03_LANCE_SLOT].module_name, TC_ROM_LLEN+1);
slot[KN03_LANCE_SLOT].k1seg_address = 0;
/* scc */
bcopy("Z8530 ", slot[KN03_SCC0_SLOT].module_name, TC_ROM_LLEN+1);
slot[KN03_SCC0_SLOT].k1seg_address =
MACH_PHYS_TO_UNCACHED(KN03_SYS_SCC_0);
slot[KN03_SCC1_SLOT].unit = 1;
bcopy("Z8530 ", slot[KN03_SCC1_SLOT].module_name, TC_ROM_LLEN+1);
slot[KN03_SCC1_SLOT].k1seg_address =
MACH_PHYS_TO_UNCACHED(KN03_SYS_SCC_1);
/* asic */
bcopy("ASIC ", slot[KN03_ASIC_SLOT].module_name, TC_ROM_LLEN+1);
slot[KN03_ASIC_SLOT].k1seg_address =
MACH_PHYS_TO_UNCACHED(KN03_SYS_ASIC);
asic_init(0);
}
#endif /* DS5000_240 */
/*
* Initialize the I/O asic
*/
static void
asic_init(isa_maxine)
int isa_maxine;
{
volatile u_int *decoder;
/* These are common between 3min and maxine */
decoder = (volatile u_int *)ASIC_REG_LANCE_DECODE(asic_base);
*decoder = KMIN_LANCE_CONFIG;
}
#endif /* DS5000 */
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.