1990/1231/power/main.c (diff list | history)

1990/1229/sys/src/9/power/main.c:39,56 – 1990/1231/sys/src/9/power/main.c:39,45 (short | long | prev | next)
1990/0826		*/ int ioid;
1990/1228		/*
1990/1229		* lance memory allocation
1990/1228		*/
1990/1229		ushort *lancelmem; /* next free lance mem as seen by lance */ ushort *lancehmem; /* next free lance mem as seen by host */ ushort *lancehend;
1990/1228
1990/1229		/* * next free lance memory map */ int lancemap;
1990/1228
1990/11211		char user[NAMELEN] = "bootes";
1990/0227		void
1990/1229/sys/src/9/power/main.c:192,218 – 1990/1231/sys/src/9/power/main.c:181,186
1990/0227		*/
1990/0907		*IO2SETMASK = 0xff;
1990/1228		/* * reset the lance. * run through all lance memory to set parity. */ if(ioid >= IO3R1){ MODEREG->promenet |= 1; MODEREG->promenet &= ~1; for(sp = LANCE3RAM; sp < LANCE3END; sp += 2) *sp = 0;
1990/1229		lancehmem = LANCE3RAM; lancehend = LANCE3END; lancelmem = (ushort*)0x800000;
1990/1228		} else { MODEREG->promenet &= ~1; MODEREG->promenet |= 1; for(sp = LANCERAM; sp < LANCEEND; sp += 1) *sp = 0;
1990/1229		lancehmem = LANCERAM; lancehend = LANCEEND; lancelmem = (ushort*)0;
1990/1228		} }
1990/0227		void
1990/1229/sys/src/9/power/main.c:734,813 – 1990/1231/sys/src/9/power/main.c:702,800
1990/1229		} /* * get our ether addr out of the non-volatile ram
1990/1231		* setup the IO2 lance, io buffers are in lance memory
1990/1229		*/ void lanceeaddr(uchar *ea)
1990/1231		lanceIO2setup(Lance *lp)
1990/1229		{ ea[0] = LANCEID[20]>>8; ea[1] = LANCEID[16]>>8; ea[2] = LANCEID[12]>>8; ea[3] = LANCEID[8]>>8; ea[4] = LANCEID[4]>>8; ea[5] = LANCEID[0]>>8;
1990/1231		ushort *sp; /* * reset lance and set parity on its memory */ MODEREG->promenet &= ~1; MODEREG->promenet |= 1; for(sp = LANCERAM; sp < LANCEEND; sp += 1) *sp = 0; lp->sep = 1; lp->lanceram = LANCERAM; lp->lm = (Lancemem*)0; /* * Allocate space in lance memory for the io buffers. * Start at 4k to avoid the initialization block and * descriptor rings. */ lp->lrp = (Etherpkt*)(4*1024); lp->ltp = lp->lrp + lp->nrrb; lp->rp = (Etherpkt*)(((ulong)LANCERAM) + (ulong)lp->lrp); lp->tp = lp->rp + lp->nrrb;
1990/1229		} /* * allocate command memory for the initialization block * and descriptor rings. * * pass back the host's address of the memory, the lance's address * of the memory, and the span (in shorts) of each short as seen * by the host. The latter is only for a peculiarity of the SGI IO3. * It is normally 1.
1990/1231		* setup the IO3 lance, io buffers are in host memory mapped to * lance address space
1990/1229		*/ void lancectlmem(ushort **hostaddr, ushort **lanceaddr, int *sep, int len)
1990/1231		lanceIO3setup(Lance *lp)
1990/1229		{ len = (len + sizeof(ushort) - 1)/sizeof(ushort); if(ioid >= IO3R1) *sep = 4; else *sep = 1; if(len+lancehmem > lancehend) panic("lancecmdmem"); *lanceaddr = lancelmem; *hostaddr = lancehmem; lancelmem += len; lancehmem += len;
1990/1231		ulong x, y; int index; ushort *sp; int len; /* * reset lance and set parity on its memory */ MODEREG->promenet |= 1; MODEREG->promenet &= ~1; for(sp = LANCE3RAM; sp < LANCE3END; sp += 2) *sp = 0; lp->sep = 4; lp->lanceram = LANCE3RAM; lp->lm = (Lancemem*)0x800000; /* * allocate some host memory for buffers and map it into lance * space */ len = (lp->nrrb + lp->ntrb)*sizeof(Etherpkt); lp->rp = (Etherpkt*)ialloc(len , 1); lp->tp = lp->rp + lp->nrrb; x = (ulong)lp->rp; lp->lrp = (Etherpkt*)(x & 0xFFF); lp->ltp = lp->lrp + lp->nrrb; index = LANCEINDEX; for(y = x+len; x < y; x += 0x1000){ *WRITEMAP = (index<<16) | (x>>12)&0xFFFF; index++; }
1990/1229		} /* * allocate packet buffer memory for the lance. * * pass back the host's address of the memory and the lance's address * of the memory.
1990/1231		* set up the lance
1990/1229		*/ void lancepktmem(ushort **hostaddr, ushort **lanceaddr, int len)
1990/1231		lancesetup(Lance *lp)
1990/1229		{ ulong x; ulong y;                  if(ioid >= IO3R1){ /* * allocate some host mempry and map it into lance * space */ *hostaddr = (ushort*)ialloc(len, 1); x = (ulong)*hostaddr; *lanceaddr = (ushort*)((lancemap<<12) | (x & 0xFFF)); for(y = x; y < x+len; y += 0x1000){ *WRITEMAP = ((0x1E00+lancemap)<<16) | (y>>12)&0xFFFF; lancemap++; } } else { /* * allocate lance memory */ len = (len + sizeof(ushort) - 1)/sizeof(ushort); if(len+lancehmem > lancehend) panic("lancecmdmem"); *lanceaddr = lancelmem; *hostaddr = lancehmem; lancelmem += len; lancehmem += len; }
1990/1231		lp->rap = LANCERAP; lp->rdp = LANCERDP; lp->ea[0] = LANCEID[20]>>8; lp->ea[1] = LANCEID[16]>>8; lp->ea[2] = LANCEID[12]>>8; lp->ea[3] = LANCEID[8]>>8; lp->ea[4] = LANCEID[4]>>8; lp->ea[5] = LANCEID[0]>>8; lp->lognrrb = 7; lp->logntrb = 7; lp->nrrb = 1<<lp->lognrrb; lp->ntrb = 1<<lp->logntrb; if(ioid >= IO3R1) lanceIO3setup(lp); else lanceIO2setup(lp);
1990/1229		} void