/* ** ----------------------------------------------------------------------------- ** ** Perle Specialix driver for Linux ** Ported from existing RIO Driver for SCO sources. * * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. ** ** Module : rioinit.c ** SID : 1.3 ** Last Modified : 11/6/98 10:33:43 ** Retrieved : 11/6/98 10:33:49 ** ** ident @(#)rioinit.c 1.3 ** ** ----------------------------------------------------------------------------- */ #ifdef SCCS_LABELS static char *_rioinit_c_sccs_ = "@(#)rioinit.c 1.3"; #endif #include <linux/module.h> #include <linux/slab.h> #include <linux/errno.h> #include <linux/delay.h> #include <asm/io.h> #include <asm/system.h> #include <asm/string.h> #include <asm/semaphore.h> #include <asm/uaccess.h> #include <linux/termios.h> #include <linux/serial.h> #include <linux/generic_serial.h> #include "linux_compat.h" #include "pkt.h" #include "daemon.h" #include "rio.h" #include "riospace.h" #include "cmdpkt.h" #include "map.h" #include "rup.h" #include "port.h" #include "riodrvr.h" #include "rioinfo.h" #include "func.h" #include "errors.h" #include "pci.h" #include "parmmap.h" #include "unixrup.h" #include "board.h" #include "host.h" #include "phb.h" #include "link.h" #include "cmdblk.h" #include "route.h" #include "cirrus.h" #include "rioioctl.h" #include "rio_linux.h" int RIOPCIinit(struct rio_info *p, int Mode); static int RIOScrub(int, u8 __iomem *, int); /** ** RIOAssignAT : ** ** Fill out the fields in the p->RIOHosts structure now we know we know ** we have a board present. ** ** bits < 0 indicates 8 bit operation requested, ** bits > 0 indicates 16 bit operation. */ int RIOAssignAT(struct rio_info *p, int Base, void __iomem *virtAddr, int mode) { int bits; struct DpRam __iomem *cardp = (struct DpRam __iomem *)virtAddr; if ((Base < ONE_MEG) || (mode & BYTE_ACCESS_MODE)) bits = BYTE_OPERATION; else bits = WORD_OPERATION; /* ** Board has passed its scrub test. Fill in all the ** transient stuff. */ p->RIOHosts[p->RIONumHosts].Caddr = virtAddr; p->RIOHosts[p->RIONumHosts].CardP = virtAddr; /* ** Revision 01 AT host cards don't support WORD operations, */ if (readb(&cardp->DpRevision) == 01) bits = BYTE_OPERATION; p->RIOHosts[p->RIONumHosts].Type = RIO_AT; p->RIOHosts[p->RIONumHosts].Copy = rio_copy_to_card; /* set this later */ p->RIOHosts[p->RIONumHosts].Slot = -1; p->RIOHosts[p->RIONumHosts].Mode = SLOW_LINKS | SLOW_AT_BUS | bits; writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | p->RIOHosts[p->RIONumHosts].Mode | INTERRUPT_DISABLE , &p->RIOHosts[p->RIONumHosts].Control); writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt); writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | p->RIOHosts[p->RIONumHosts].Mode | INTERRUPT_DISABLE, &p->RIOHosts[p->RIONumHosts].Control); writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt); p->RIOHosts[p->RIONumHosts].UniqueNum = ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0])&0xFF)<<0)| ((readb(&p->RIOHosts[p->RIONumHosts].Unique[1])&0xFF)<<8)| ((readb(&p->RIOHosts[p->RIONumHosts].Unique[2])&0xFF)<<16)| ((readb(&p->RIOHosts[p->RIONumHosts].Unique[3])&0xFF)<<24); rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Uniquenum 0x%x\n",p->RIOHosts[p->RIONumHosts].UniqueNum); p->RIONumHosts++; rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Tests Passed at 0x%x\n", Base); return(1); } static u8 val[] = { #ifdef VERY_LONG_TEST 0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0xa5, 0xff, 0x5a, 0x00, 0xff, 0xc9, 0x36, #endif 0xff, 0x00, 0x00 }; #define TEST_END sizeof(val) /* ** RAM test a board. ** Nothing too complicated, just enough to check it out. */ int RIOBoardTest(unsigned long paddr, void __iomem *caddr, unsigned char type, int slot) { struct DpRam __iomem *DpRam = caddr; void __iomem *ram[4]; int size[4]; int op, bank; int nbanks; rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Reset host type=%d, DpRam=%p, slot=%d\n", type, DpRam, slot); RIOHostReset(type, DpRam, slot); /* ** Scrub the memory. This comes in several banks: ** DPsram1 - 7000h bytes ** DPsram2 - 200h bytes ** DPsram3 - 7000h bytes ** scratch - 1000h bytes */ rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Setup ram/size arrays\n"); size[0] = DP_SRAM1_SIZE; size[1] = DP_SRAM2_SIZE; size[2] = DP_SRAM3_SIZE; size[3] = DP_SCRATCH_SIZE; ram[0] = DpRam->DpSram1; ram[1] = DpRam->DpSram2; ram[2] = DpRam->DpSram3; nbanks = (type == RIO_PCI) ? 3 : 4; if (nbanks == 4) ram[3] = DpRam->DpScratch; if (nbanks == 3) { rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Memory: %p(0x%x), %p(0x%x), %p(0x%x)\n", ram[0], size[0], ram[1], size[1], ram[2], size[2]); } else { rio_dprintk (RIO_DEBUG_INIT, "RIO-init: %p(0x%x), %p(0x%x), %p(0x%x), %p(0x%x)\n", ram[0], size[0], ram[1], size[1], ram[2], size[2], ram[3], size[3]); } /* ** This scrub operation will test for crosstalk between ** banks. TEST_END is a magic number, and relates to the offset ** within the 'val' array used by Scrub. */ for (op=0; op<TEST_END; op++) { for (bank=0; bank<nbanks; bank++) { if (RIOScrub(op, ram[bank], size[bank]) == RIO_FAIL) { rio_dprintk (RIO_DEBUG_INIT, "RIO-init: RIOScrub band %d, op %d failed\n", bank, op); return RIO_FAIL; } } } rio_dprintk (RIO_DEBUG_INIT, "Test completed\n"); return 0; } /* ** Scrub an area of RAM. ** Define PRETEST and POSTTEST for a more thorough checking of the ** state of the memory. ** Call with op set to an index into the above 'val' array to determine ** which value will be written into memory. ** Call with op set to zero means that the RAM will not be read and checked ** before it is written. ** Call with op not zero and the RAM will be read and compared with val[op-1] ** to check that the data from the previous phase was retained. */ static int RIOScrub(int op, u8 __iomem *ram, int size) { int off; unsigned char oldbyte; unsigned char newbyte; unsigned char invbyte; unsigned short oldword; unsigned short newword; unsigned short invword; unsigned short swapword; if (op) { oldbyte = val[op-1]; oldword = oldbyte | (oldbyte<<8); } else oldbyte = oldword = 0; /* Tell the compiler we've initilalized them. */ newbyte = val[op]; newword = newbyte | (newbyte<<8); invbyte = ~newbyte; invword = invbyte | (invbyte<<8); /* ** Check that the RAM contains the value that should have been left there ** by the previous test (not applicable for pass zero) */ if (op) { for (off=0; off<size; off++) { if (readb(ram + off) != oldbyte) { rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Byte Pre Check 1: BYTE at offset 0x%x should have been=%x, was=%x\n", off, oldbyte, readb(ram + off)); return RIO_FAIL; } } for (off=0; off<size; off+=2) { if (readw(ram + off) != oldword) { rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Word Pre Check: WORD at offset 0x%x should have been=%x, was=%x\n",off,oldword, readw(ram + off)); rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Word Pre Check: BYTE at offset 0x%x is %x BYTE at offset 0x%x is %x\n", off, readb(ram + off), off+1, readb(ram+off+1)); return RIO_FAIL; } } } /* ** Now write the INVERSE of the test data into every location, using ** BYTE write operations, first checking before each byte is written ** that the location contains the old value still, and checking after ** the write that the location contains the data specified - this is ** the BYTE read/write test. */ for (off=0; off<size; off++) { if (op && (readb(ram + off) != oldbyte)) { rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Byte Pre Check 2: BYTE at offset 0x%x should have been=%x, was=%x\n", off, oldbyte, readb(ram + off)); return RIO_FAIL; } writeb(invbyte, ram + off); if (readb(ram + off) != invbyte) { rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Byte Inv Check: BYTE at offset 0x%x should have been=%x, was=%x\n", off, invbyte, readb(ram + off)); return RIO_FAIL; } } /* ** now, use WORD operations to write the test value into every location, ** check as before that the location contains the previous test value ** before overwriting, and that it contains the data value written ** afterwards. ** This is the WORD operation test. */ for (off=0; off<size; off+=2) { if (readw(ram + off) != invword) { rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Word Inv Check: WORD at offset 0x%x should have been=%x, was=%x\n", off, invword, readw(ram + off)); rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Word Inv Check: BYTE at offset 0x%x is %x BYTE at offset 0x%x is %x\n", off, readb(ram + off), off+1, readb(ram+off+1)); return RIO_FAIL; } writew(newword, ram + off); if ( readw(ram + off) != newword ) { rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Post Word Check 1: WORD at offset 0x%x should have been=%x, was=%x\n", off, newword, readw(ram + off)); rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Post Word Check 1: BYTE at offset 0x%x is %x BYTE at offset 0x%x is %x\n", off, readb(ram + off), off+1, readb(ram + off + 1)); return RIO_FAIL; } } /* ** now run through the block of memory again, first in byte mode ** then in word mode, and check that all the locations contain the ** required test data. */ for (off=0; off<size; off++) { if (readb(ram + off) != newbyte) { rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Post Byte Check: BYTE at offset 0x%x should have been=%x, was=%x\n", off, newbyte, readb(ram + off)); return RIO_FAIL; } } for (off=0; off<size; off+=2) { if (readw(ram + off) != newword ) { rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Post Word Check 2: WORD at offset 0x%x should have been=%x, was=%x\n", off, newword, readw(ram + off)); rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Post Word Check 2: BYTE at offset 0x%x is %x BYTE at offset 0x%x is %x\n", off, readb(ram + off), off+1, readb(ram + off + 1)); return RIO_FAIL; } } /* ** time to check out byte swapping errors */ swapword = invbyte | (newbyte << 8); for (off=0; off<size; off+=2) { writeb(invbyte, &ram[off]); writeb(newbyte, &ram[off+1]); } for ( off=0; off<size; off+=2 ) { if (readw(ram + off) != swapword) { rio_dprintk (RIO_DEBUG_INIT, "RIO-init: SwapWord Check 1: WORD at offset 0x%x should have been=%x, was=%x\n", off, swapword, readw(ram + off)); rio_dprintk (RIO_DEBUG_INIT, "RIO-init: SwapWord Check 1: BYTE at offset 0x%x is %x BYTE at offset 0x%x is %x\n", off, readb(ram + off), off+1, readb(ram + off + 1)); return RIO_FAIL; } writew(~swapword, ram + off); } for (off=0; off<size; off+=2) { if (readb(ram + off) != newbyte) { rio_dprintk (RIO_DEBUG_INIT, "RIO-init: SwapWord Check 2: BYTE at offset 0x%x should have been=%x, was=%x\n", off, newbyte, readb(ram + off)); return RIO_FAIL; } if (readb(ram + off + 1) != invbyte) { rio_dprintk (RIO_DEBUG_INIT, "RIO-init: SwapWord Check 2: BYTE at offset 0x%x should have been=%x, was=%x\n", off+1, invbyte, readb(ram + off + 1)); return RIO_FAIL; } writew(newword, ram + off); } return 0; } int RIODefaultName(struct rio_info *p, struct Host *HostP, unsigned int UnitId) { memcpy(HostP->Mapping[UnitId].Name, "UNKNOWN RTA X-XX", 17); HostP->Mapping[UnitId].Name[12]='1'+(HostP-p->RIOHosts); if ((UnitId+1) > 9) { HostP->Mapping[UnitId].Name[14]='0'+((UnitId+1)/10); HostP->Mapping[UnitId].Name[15]='0'+((UnitId+1)%10); } else { HostP->Mapping[UnitId].Name[14]='1'+UnitId; HostP->Mapping[UnitId].Name[15]=0; } return 0; } #define RIO_RELEASE "Linux" #define RELEASE_ID "1.0" static struct rioVersion stVersion; struct rioVersion *RIOVersid(void) { strlcpy(stVersion.version, "RIO driver for linux V1.0", sizeof(stVersion.version)); strlcpy(stVersion.buildDate, __DATE__, sizeof(stVersion.buildDate)); return &stVersion; } void RIOHostReset(unsigned int Type, struct DpRam __iomem *DpRamP, unsigned int Slot) { /* ** Reset the Tpu */ rio_dprintk (RIO_DEBUG_INIT, "RIOHostReset: type 0x%x", Type); switch ( Type ) { case RIO_AT: rio_dprintk (RIO_DEBUG_INIT, " (RIO_AT)\n"); writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | INTERRUPT_DISABLE | BYTE_OPERATION | SLOW_LINKS | SLOW_AT_BUS, &DpRamP->DpControl); writeb(0xFF, &DpRamP->DpResetTpu); udelay(3); rio_dprintk (RIO_DEBUG_INIT, "RIOHostReset: Don't know if it worked. Try reset again\n"); writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | INTERRUPT_DISABLE | BYTE_OPERATION | SLOW_LINKS | SLOW_AT_BUS, &DpRamP->DpControl); writeb(0xFF, &DpRamP->DpResetTpu); udelay(3); break; case RIO_PCI: rio_dprintk (RIO_DEBUG_INIT, " (RIO_PCI)\n"); writeb(RIO_PCI_BOOT_FROM_RAM, &DpRamP->DpControl); writeb(0xFF, &DpRamP->DpResetInt); writeb(0xFF, &DpRamP->DpResetTpu); udelay(100); break; default: rio_dprintk (RIO_DEBUG_INIT, " (UNKNOWN)\n"); break; } return; }