4.2 distribution

[unix-history] / usr / src / sys / kern / init_main.c

diff --git a/usr/src/sys/kern/init_main.c b/usr/src/sys/kern/init_main.c
index 16e7aea..b244654 100644 (file)
--- a/usr/src/sys/kern/init_main.c
+++ b/usr/src/sys/kern/init_main.c
@@ -1,10 +1,13 @@
-/*     init_main.c     3.13    %G%     */
+/*     init_main.c     6.1     83/07/29        */
+
+#include "../machine/pte.h"

 
 #include "../h/param.h"
 #include "../h/systm.h"
 #include "../h/dir.h"
 #include "../h/user.h"
 
 #include "../h/param.h"
 #include "../h/systm.h"
 #include "../h/dir.h"
 #include "../h/user.h"

-#include "../h/filsys.h"
+#include "../h/kernel.h"
+#include "../h/fs.h"

 #include "../h/mount.h"
 #include "../h/map.h"
 #include "../h/proc.h"
 #include "../h/mount.h"
 #include "../h/map.h"
 #include "../h/proc.h"


@@ -12,14 +15,18 @@
 #include "../h/seg.h"
 #include "../h/conf.h"
 #include "../h/buf.h"
 #include "../h/seg.h"
 #include "../h/conf.h"
 #include "../h/buf.h"

-#include "../h/mtpr.h"
-#include "../h/pte.h"
-#include "../h/clock.h"

 #include "../h/vm.h"
 #include "../h/cmap.h"
 #include "../h/text.h"
 #include "../h/vm.h"
 #include "../h/cmap.h"
 #include "../h/text.h"

-#include "../h/vlimit.h"
+#include "../h/clist.h"
+#ifdef INET
+#include "../h/protosw.h"
+#endif
+#include "../h/quota.h"
+#include "../machine/reg.h"
+#include "../machine/cpu.h"

 
 

+extern struct user u;          /* have to declare it somewhere! */

 /*
  * Initialization code.
  * Called from cold start routine as
 /*
  * Initialization code.
  * Called from cold start routine as


@@ -38,77 +45,120 @@
  *     cannot be executed.
  */
 main(firstaddr)
  *     cannot be executed.
  */
 main(firstaddr)

+       int firstaddr;

 {
        register int i;
 {
        register int i;

+       register struct proc *p;
+       struct fs *fs;
+       int s;

 
 

-       cpusid = mfpr(SID);             /* get system identification */
-#ifdef FASTVAX

        rqinit();
        rqinit();

-#endif
+#include "loop.h"

        startup(firstaddr);
        startup(firstaddr);

-       if (lotsfree == 0)
-               lotsfree = LOTSFREE;

 
        /*
         * set up system process 0 (swapper)
         */
 
        /*
         * set up system process 0 (swapper)
         */

-
-       proc[0].p_p0br = (struct pte *)mfpr(P0BR);
-       proc[0].p_szpt = 1;
-       proc[0].p_addr = uaddr(&proc[0]);
-       proc[0].p_stat = SRUN;
-       proc[0].p_flag |= SLOAD|SSYS;
-       proc[0].p_nice = NZERO;
-       u.u_procp = &proc[0];
+       p = &proc[0];
+       p->p_p0br = u.u_pcb.pcb_p0br;
+       p->p_szpt = 1;
+       p->p_addr = uaddr(p);
+       p->p_stat = SRUN;
+       p->p_flag |= SLOAD|SSYS;
+       p->p_nice = NZERO;
+       setredzone(p->p_addr, (caddr_t)&u);
+       u.u_procp = p;

        u.u_cmask = CMASK;
        u.u_cmask = CMASK;

-       for (i = 1; i < sizeof(u.u_limit)/sizeof(u.u_limit[0]); i++)
-               switch (i) {
-
-               case LIM_STACK:
-                       u.u_limit[i] = 512*1024;
-                       continue;
-               case LIM_DATA:
-                       u.u_limit[i] = ctob(MAXDSIZ);
-                       continue;
-               default:
-                       u.u_limit[i] = INFINITY;
-                       continue;
-               }
-       clkstart();
+       for (i = 1; i < NGROUPS; i++)
+               u.u_groups[i] = NOGROUP;
+       for (i = 0; i < sizeof(u.u_rlimit)/sizeof(u.u_rlimit[0]); i++)
+               u.u_rlimit[i].rlim_cur = u.u_rlimit[i].rlim_max = 
+                   RLIM_INFINITY;
+       u.u_rlimit[RLIMIT_STACK].rlim_cur = 512*1024;
+       u.u_rlimit[RLIMIT_STACK].rlim_max = ctob(MAXDSIZ);
+       u.u_rlimit[RLIMIT_DATA].rlim_max =
+           u.u_rlimit[RLIMIT_DATA].rlim_cur = ctob(MAXDSIZ);
+       p->p_maxrss = RLIM_INFINITY/NBPG;
+#ifdef QUOTA
+       qtinit();
+       p->p_quota = u.u_quota = getquota(0, 0, Q_NDQ);
+#endif
+       startrtclock();
+#include "kg.h"
+#if NKG > 0
+       startkgclock();
+#endif

 
        /*
 
        /*

-        * Initialize devices and
-        * set up 'known' i-nodes
+        * Initialize tables, protocols, and set up well-known inodes.

         */
         */

-
+       mbinit();
+       cinit();                        /* needed by dmc-11 driver */
+#ifdef INET
+#if NLOOP > 0
+       loattach();                     /* XXX */
+#endif
+       /*
+        * Block reception of incoming packets
+        * until protocols have been initialized.
+        */
+       s = splimp();
+       ifinit();
+#endif
+       domaininit();
+#ifdef INET
+       splx(s);
+#endif

        ihinit();
        bhinit();
        ihinit();
        bhinit();

-       cinit();

        binit();
        bswinit();
        binit();
        bswinit();

-       iinit();
-       rootdir = iget(rootdev, (ino_t)ROOTINO);
-       rootdir->i_flag &= ~ILOCK;
-       u.u_cdir = iget(rootdev, (ino_t)ROOTINO);
-       u.u_cdir->i_flag &= ~ILOCK;
+#ifdef GPROF
+       kmstartup();
+#endif
+
+       fs = mountfs(rootdev, 0, (struct inode *)0);
+       if (fs == 0)
+               panic("iinit");
+       bcopy("/", fs->fs_fsmnt, 2);
+
+       inittodr(fs->fs_time);
+       boottime = time;
+
+/* kick off timeout driven events by calling first time */
+       roundrobin();
+       schedcpu();
+       schedpaging();
+
+/* set up the root file system */
+       rootdir = iget(rootdev, fs, (ino_t)ROOTINO);
+       iunlock(rootdir);
+       u.u_cdir = iget(rootdev, fs, (ino_t)ROOTINO);
+       iunlock(u.u_cdir);

        u.u_rdir = NULL;
        u.u_rdir = NULL;

+

        u.u_dmap = zdmap;
        u.u_smap = zdmap;
 
        u.u_dmap = zdmap;
        u.u_smap = zdmap;
 

+       /*
+        * Set the scan rate and other parameters of the paging subsystem.
+        */
+       setupclock();
+

        /*
         * make page-out daemon (process 2)
        /*
         * make page-out daemon (process 2)

-        * the daemon has ctopt(NSWBUF*CLSIZE*KLMAX) pages of page
+        * the daemon has ctopt(nswbuf*CLSIZE*KLMAX) pages of page

         * table so that it can map dirty pages into
         * its address space during asychronous pushes.
         */
         * table so that it can map dirty pages into
         * its address space during asychronous pushes.
         */

-

        mpid = 1;
        mpid = 1;

-       proc[0].p_szpt = clrnd(ctopt(NSWBUF*CLSIZE*KLMAX + UPAGES));
+       proc[0].p_szpt = clrnd(ctopt(nswbuf*CLSIZE*KLMAX + UPAGES));

        proc[1].p_stat = SZOMB;         /* force it to be in proc slot 2 */
        if (newproc(0)) {
                proc[2].p_flag |= SLOAD|SSYS;
        proc[1].p_stat = SZOMB;         /* force it to be in proc slot 2 */
        if (newproc(0)) {
                proc[2].p_flag |= SLOAD|SSYS;

-               proc[2].p_dsize = u.u_dsize = NSWBUF*CLSIZE*KLMAX; 
+               proc[2].p_dsize = u.u_dsize = nswbuf*CLSIZE*KLMAX; 

                pageout();
                pageout();

+               /*NOTREACHED*/

        }
 
        /*
        }
 
        /*


@@ -120,8 +170,8 @@ main(firstaddr)
        proc[1].p_stat = 0;
        proc[0].p_szpt = CLSIZE;
        if (newproc(0)) {
        proc[1].p_stat = 0;
        proc[0].p_szpt = CLSIZE;
        if (newproc(0)) {

-               expand(clrnd((int)btoc(szicode)), P0BR);
-               swpexpand(u.u_dsize, 0, &u.u_dmap, &u.u_smap);
+               expand(clrnd((int)btoc(szicode)), 0);
+               (void) swpexpand(u.u_dsize, 0, &u.u_dmap, &u.u_smap);

                (void) copyout((caddr_t)icode, (caddr_t)0, (unsigned)szicode);
                /*
                 * Return goes to loc. 0 of user init
                (void) copyout((caddr_t)icode, (caddr_t)0, (unsigned)szicode);
                /*
                 * Return goes to loc. 0 of user init


@@ -134,95 +184,63 @@ main(firstaddr)
 }
 
 /*
 }
 
 /*

- * iinit is called once (from main)
- * very early in initialization.
- * It reads the root's super block
- * and initializes the current date
- * from the last modified date.
- *
- * panic: iinit -- cannot read the super
- * block. Usually because of an IO error.
+ * Initialize hash links for buffers.

  */
  */

-iinit()
+bhinit()

 {
 {

-       register struct buf *cp, *bp;
-       register struct filsys *fp;
+       register int i;
+       register struct bufhd *bp;

 
 

-       (*bdevsw[major(rootdev)].d_open)(rootdev, 1);
-       bp = bread(rootdev, SUPERB);
-       cp = geteblk();
-       if(u.u_error)
-               panic("iinit");
-       bcopy(bp->b_un.b_addr, cp->b_un.b_addr, sizeof(struct filsys));
-       brelse(bp);
-       mount[0].m_bufp = cp;
-       mount[0].m_dev = rootdev;
-       fp = cp->b_un.b_filsys;
-       fp->s_flock = 0;
-       fp->s_ilock = 0;
-       fp->s_ronly = 0;
-       fp->s_lasti = 1;
-       fp->s_nbehind = 0;
-       clkinit(fp->s_time);
-       bootime = time;
+       for (bp = bufhash, i = 0; i < BUFHSZ; i++, bp++)
+               bp->b_forw = bp->b_back = (struct buf *)bp;

 }
 
 }
 

-/*
- * This is the set of buffers proper, whose heads
- * were declared in buf.h.  There can exist buffer
- * headers not pointing here that are used purely
- * as arguments to the I/O routines to describe
- * I/O to be done-- e.g. swap headers swbuf[] for
- * swapping.
- *
- * These are actually allocated kernel map slots and space is
- * allocated in locore.s for them.
- */
-char   buffers[NBUF][BSIZE];
-

 /*
  * Initialize the buffer I/O system by freeing
  * all buffers and setting all device buffer lists to empty.
  */
 binit()
 {
 /*
  * Initialize the buffer I/O system by freeing
  * all buffers and setting all device buffer lists to empty.
  */
 binit()
 {

-       register struct buf *bp;
-       register struct buf *dp;
+       register struct buf *bp, *dp;

        register int i;
        register int i;

-       struct bdevsw *bdp;

        struct swdevt *swp;
        struct swdevt *swp;

+       int base, residual;

 
 

-       bfreelist.b_forw = bfreelist.b_back =
-           bfreelist.av_forw = bfreelist.av_back = &bfreelist;
-       for (i=0; i<NBUF; i++) {
+       for (dp = bfreelist; dp < &bfreelist[BQUEUES]; dp++) {
+               dp->b_forw = dp->b_back = dp->av_forw = dp->av_back = dp;
+               dp->b_flags = B_HEAD;
+       }
+       base = bufpages / nbuf;
+       residual = bufpages % nbuf;
+       for (i = 0; i < nbuf; i++) {

                bp = &buf[i];
                bp->b_dev = NODEV;
                bp = &buf[i];
                bp->b_dev = NODEV;

-               bp->b_un.b_addr = buffers[i];
-               bp->b_back = &bfreelist;
-               bp->b_forw = bfreelist.b_forw;
-               bfreelist.b_forw->b_back = bp;
-               bfreelist.b_forw = bp;
-               bp->b_flags = B_BUSY;
+               bp->b_bcount = 0;
+               bp->b_un.b_addr = buffers + i * MAXBSIZE;
+               if (i < residual)
+                       bp->b_bufsize = (base + 1) * CLBYTES;
+               else
+                       bp->b_bufsize = base * CLBYTES;
+               binshash(bp, &bfreelist[BQ_AGE]);
+               bp->b_flags = B_BUSY|B_INVAL;

                brelse(bp);
        }
                brelse(bp);
        }

-       for (bdp = bdevsw; bdp->d_open; bdp++) {
-               dp = bdp->d_tab;
-               if(dp) {
-                       dp->b_forw = dp;
-                       dp->b_back = dp;
-               }
-               nblkdev++;
-       }

        /*
         * Count swap devices, and adjust total swap space available.
         * Some of this space will not be available until a vswapon()
         * system is issued, usually when the system goes multi-user.
         */
        nswdev = 0;
        /*
         * Count swap devices, and adjust total swap space available.
         * Some of this space will not be available until a vswapon()
         * system is issued, usually when the system goes multi-user.
         */
        nswdev = 0;

-       for (swp = swdevt; swp->sw_dev; swp++)
+       nswap = 0;
+       for (swp = swdevt; swp->sw_dev; swp++) {

                nswdev++;
                nswdev++;

+               if (swp->sw_nblks > nswap)
+                       nswap = swp->sw_nblks;
+       }

        if (nswdev == 0)
                panic("binit");
        if (nswdev == 0)
                panic("binit");

+       if (nswdev > 1)
+               nswap = ((nswap + dmmax - 1) / dmmax) * dmmax;

        nswap *= nswdev;
        maxpgio *= nswdev;
        swfree(0);
        nswap *= nswdev;
        maxpgio *= nswdev;
        swfree(0);


@@ -237,9 +255,28 @@ binit()
 bswinit()
 {
        register int i;
 bswinit()
 {
        register int i;

+       register struct buf *sp = swbuf;
+
+       bswlist.av_forw = sp;
+       for (i=0; i<nswbuf-1; i++, sp++)
+               sp->av_forw = sp+1;
+       sp->av_forw = NULL;
+}

 
 

-       bswlist.av_forw = &swbuf[0];
-       for (i=0; i<NSWBUF-1; i++)
-               swbuf[i].av_forw = &swbuf[i+1];
-       swbuf[NSWBUF-1].av_forw = NULL;
+/*
+ * Initialize clist by freeing all character blocks, then count
+ * number of character devices. (Once-only routine)
+ */
+cinit()
+{
+       register int ccp;
+       register struct cblock *cp;
+
+       ccp = (int)cfree;
+       ccp = (ccp+CROUND) & ~CROUND;
+       for(cp=(struct cblock *)ccp; cp < &cfree[nclist-1]; cp++) {
+               cp->c_next = cfreelist;
+               cfreelist = cp;
+               cfreecount += CBSIZE;
+       }

 }
 }