1217 lines
33 KiB
C
1217 lines
33 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* linux/arch/alpha/kernel/core_cia.c
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*
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* Written by David A Rusling (david.rusling@reo.mts.dec.com).
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* December 1995.
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*
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* Copyright (C) 1995 David A Rusling
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* Copyright (C) 1997, 1998 Jay Estabrook
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* Copyright (C) 1998, 1999, 2000 Richard Henderson
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*
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* Code common to all CIA core logic chips.
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*/
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#define __EXTERN_INLINE inline
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#include <asm/io.h>
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#include <asm/core_cia.h>
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#undef __EXTERN_INLINE
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#include <linux/types.h>
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#include <linux/pci.h>
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#include <linux/sched.h>
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#include <linux/init.h>
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#include <linux/memblock.h>
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#include <asm/ptrace.h>
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#include <asm/mce.h>
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#include "proto.h"
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#include "pci_impl.h"
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/*
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* NOTE: Herein lie back-to-back mb instructions. They are magic.
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* One plausible explanation is that the i/o controller does not properly
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* handle the system transaction. Another involves timing. Ho hum.
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*/
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#define DEBUG_CONFIG 0
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#if DEBUG_CONFIG
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# define DBGC(args) printk args
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#else
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# define DBGC(args)
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#endif
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#define vip volatile int *
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/*
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* Given a bus, device, and function number, compute resulting
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* configuration space address. It is therefore not safe to have
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* concurrent invocations to configuration space access routines, but
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* there really shouldn't be any need for this.
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*
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* Type 0:
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*
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* 3 3|3 3 2 2|2 2 2 2|2 2 2 2|1 1 1 1|1 1 1 1|1 1
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* 3 2|1 0 9 8|7 6 5 4|3 2 1 0|9 8 7 6|5 4 3 2|1 0 9 8|7 6 5 4|3 2 1 0
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | | |D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|F|F|F|R|R|R|R|R|R|0|0|
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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* 31:11 Device select bit.
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* 10:8 Function number
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* 7:2 Register number
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*
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* Type 1:
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*
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* 3 3|3 3 2 2|2 2 2 2|2 2 2 2|1 1 1 1|1 1 1 1|1 1
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* 3 2|1 0 9 8|7 6 5 4|3 2 1 0|9 8 7 6|5 4 3 2|1 0 9 8|7 6 5 4|3 2 1 0
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | | | | | | | | | | |B|B|B|B|B|B|B|B|D|D|D|D|D|F|F|F|R|R|R|R|R|R|0|1|
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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* 31:24 reserved
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* 23:16 bus number (8 bits = 128 possible buses)
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* 15:11 Device number (5 bits)
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* 10:8 function number
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* 7:2 register number
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*
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* Notes:
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* The function number selects which function of a multi-function device
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* (e.g., SCSI and Ethernet).
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*
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* The register selects a DWORD (32 bit) register offset. Hence it
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* doesn't get shifted by 2 bits as we want to "drop" the bottom two
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* bits.
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*/
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static int
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mk_conf_addr(struct pci_bus *bus_dev, unsigned int device_fn, int where,
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unsigned long *pci_addr, unsigned char *type1)
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{
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u8 bus = bus_dev->number;
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*type1 = (bus != 0);
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*pci_addr = (bus << 16) | (device_fn << 8) | where;
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DBGC(("mk_conf_addr(bus=%d ,device_fn=0x%x, where=0x%x,"
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" returning address 0x%p\n"
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bus, device_fn, where, *pci_addr));
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return 0;
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}
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static unsigned int
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conf_read(unsigned long addr, unsigned char type1)
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{
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unsigned long flags;
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int stat0, value;
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int cia_cfg = 0;
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DBGC(("conf_read(addr=0x%lx, type1=%d) ", addr, type1));
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local_irq_save(flags);
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/* Reset status register to avoid losing errors. */
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stat0 = *(vip)CIA_IOC_CIA_ERR;
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*(vip)CIA_IOC_CIA_ERR = stat0;
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mb();
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*(vip)CIA_IOC_CIA_ERR; /* re-read to force write */
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/* If Type1 access, must set CIA CFG. */
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if (type1) {
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cia_cfg = *(vip)CIA_IOC_CFG;
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*(vip)CIA_IOC_CFG = (cia_cfg & ~3) | 1;
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mb();
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*(vip)CIA_IOC_CFG;
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}
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mb();
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draina();
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mcheck_expected(0) = 1;
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mcheck_taken(0) = 0;
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mb();
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/* Access configuration space. */
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value = *(vip)addr;
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mb();
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mb(); /* magic */
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if (mcheck_taken(0)) {
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mcheck_taken(0) = 0;
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value = 0xffffffff;
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mb();
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}
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mcheck_expected(0) = 0;
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mb();
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/* If Type1 access, must reset IOC CFG so normal IO space ops work. */
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if (type1) {
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*(vip)CIA_IOC_CFG = cia_cfg;
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mb();
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*(vip)CIA_IOC_CFG;
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}
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local_irq_restore(flags);
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DBGC(("done\n"));
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return value;
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}
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static void
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conf_write(unsigned long addr, unsigned int value, unsigned char type1)
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{
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unsigned long flags;
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int stat0, cia_cfg = 0;
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DBGC(("conf_write(addr=0x%lx, type1=%d) ", addr, type1));
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local_irq_save(flags);
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/* Reset status register to avoid losing errors. */
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stat0 = *(vip)CIA_IOC_CIA_ERR;
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*(vip)CIA_IOC_CIA_ERR = stat0;
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mb();
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*(vip)CIA_IOC_CIA_ERR; /* re-read to force write */
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/* If Type1 access, must set CIA CFG. */
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if (type1) {
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cia_cfg = *(vip)CIA_IOC_CFG;
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*(vip)CIA_IOC_CFG = (cia_cfg & ~3) | 1;
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mb();
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*(vip)CIA_IOC_CFG;
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}
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mb();
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draina();
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mcheck_expected(0) = 1;
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mcheck_taken(0) = 0;
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mb();
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/* Access configuration space. */
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*(vip)addr = value;
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mb();
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*(vip)addr; /* read back to force the write */
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mcheck_expected(0) = 0;
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mb();
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/* If Type1 access, must reset IOC CFG so normal IO space ops work. */
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if (type1) {
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*(vip)CIA_IOC_CFG = cia_cfg;
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mb();
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*(vip)CIA_IOC_CFG;
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}
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local_irq_restore(flags);
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DBGC(("done\n"));
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}
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static int
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cia_read_config(struct pci_bus *bus, unsigned int devfn, int where, int size,
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u32 *value)
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{
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unsigned long addr, pci_addr;
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long mask;
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unsigned char type1;
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int shift;
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if (mk_conf_addr(bus, devfn, where, &pci_addr, &type1))
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return PCIBIOS_DEVICE_NOT_FOUND;
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mask = (size - 1) * 8;
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shift = (where & 3) * 8;
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addr = (pci_addr << 5) + mask + CIA_CONF;
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*value = conf_read(addr, type1) >> (shift);
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return PCIBIOS_SUCCESSFUL;
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}
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static int
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cia_write_config(struct pci_bus *bus, unsigned int devfn, int where, int size,
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u32 value)
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{
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unsigned long addr, pci_addr;
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long mask;
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unsigned char type1;
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if (mk_conf_addr(bus, devfn, where, &pci_addr, &type1))
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return PCIBIOS_DEVICE_NOT_FOUND;
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mask = (size - 1) * 8;
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addr = (pci_addr << 5) + mask + CIA_CONF;
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conf_write(addr, value << ((where & 3) * 8), type1);
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return PCIBIOS_SUCCESSFUL;
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}
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struct pci_ops cia_pci_ops =
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{
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.read = cia_read_config,
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.write = cia_write_config,
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};
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/*
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* CIA Pass 1 and PYXIS Pass 1 and 2 have a broken scatter-gather tlb.
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* It cannot be invalidated. Rather than hard code the pass numbers,
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* actually try the tbia to see if it works.
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*/
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void
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cia_pci_tbi(struct pci_controller *hose, dma_addr_t start, dma_addr_t end)
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{
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wmb();
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*(vip)CIA_IOC_PCI_TBIA = 3; /* Flush all locked and unlocked. */
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mb();
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*(vip)CIA_IOC_PCI_TBIA;
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}
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/*
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* On PYXIS, even if the tbia works, we cannot use it. It effectively locks
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* the chip (as well as direct write to the tag registers) if there is a
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* SG DMA operation in progress. This is true at least for PYXIS rev. 1,
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* so always use the method below.
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*/
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/*
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* This is the method NT and NetBSD use.
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*
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* Allocate mappings, and put the chip into DMA loopback mode to read a
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* garbage page. This works by causing TLB misses, causing old entries to
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* be purged to make room for the new entries coming in for the garbage page.
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*/
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#define CIA_BROKEN_TBIA_BASE 0x30000000
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#define CIA_BROKEN_TBIA_SIZE 1024
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/* Always called with interrupts disabled */
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void
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cia_pci_tbi_try2(struct pci_controller *hose,
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dma_addr_t start, dma_addr_t end)
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{
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void __iomem *bus_addr;
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int ctrl;
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/* Put the chip into PCI loopback mode. */
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mb();
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ctrl = *(vip)CIA_IOC_CIA_CTRL;
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*(vip)CIA_IOC_CIA_CTRL = ctrl | CIA_CTRL_PCI_LOOP_EN;
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mb();
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*(vip)CIA_IOC_CIA_CTRL;
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mb();
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/* Read from PCI dense memory space at TBI_ADDR, skipping 32k on
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each read. This forces SG TLB misses. NetBSD claims that the
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TLB entries are not quite LRU, meaning that we need to read more
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times than there are actual tags. The 2117x docs claim strict
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round-robin. Oh well, we've come this far... */
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/* Even better - as seen on the PYXIS rev 1 the TLB tags 0-3 can
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be filled by the TLB misses *only once* after being invalidated
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(by tbia or direct write). Next misses won't update them even
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though the lock bits are cleared. Tags 4-7 are "quite LRU" though,
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so use them and read at window 3 base exactly 4 times. Reading
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more sometimes makes the chip crazy. -ink */
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bus_addr = cia_ioremap(CIA_BROKEN_TBIA_BASE, 32768 * 4);
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cia_readl(bus_addr + 0x00000);
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cia_readl(bus_addr + 0x08000);
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cia_readl(bus_addr + 0x10000);
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cia_readl(bus_addr + 0x18000);
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cia_iounmap(bus_addr);
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/* Restore normal PCI operation. */
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mb();
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*(vip)CIA_IOC_CIA_CTRL = ctrl;
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mb();
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*(vip)CIA_IOC_CIA_CTRL;
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mb();
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}
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static inline void
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cia_prepare_tbia_workaround(int window)
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{
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unsigned long *ppte, pte;
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long i;
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/* Use minimal 1K map. */
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ppte = memblock_alloc(CIA_BROKEN_TBIA_SIZE, 32768);
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if (!ppte)
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panic("%s: Failed to allocate %u bytes align=0x%x\n",
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__func__, CIA_BROKEN_TBIA_SIZE, 32768);
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pte = (virt_to_phys(ppte) >> (PAGE_SHIFT - 1)) | 1;
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for (i = 0; i < CIA_BROKEN_TBIA_SIZE / sizeof(unsigned long); ++i)
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ppte[i] = pte;
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*(vip)CIA_IOC_PCI_Wn_BASE(window) = CIA_BROKEN_TBIA_BASE | 3;
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*(vip)CIA_IOC_PCI_Wn_MASK(window)
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= (CIA_BROKEN_TBIA_SIZE*1024 - 1) & 0xfff00000;
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*(vip)CIA_IOC_PCI_Tn_BASE(window) = virt_to_phys(ppte) >> 2;
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}
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static void __init
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verify_tb_operation(void)
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{
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static int page[PAGE_SIZE/4]
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__attribute__((aligned(PAGE_SIZE)))
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__initdata = { 0 };
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struct pci_iommu_arena *arena = pci_isa_hose->sg_isa;
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int ctrl, addr0, tag0, pte0, data0;
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int temp, use_tbia_try2 = 0;
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void __iomem *bus_addr;
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/* pyxis -- tbia is broken */
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if (pci_isa_hose->dense_io_base)
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use_tbia_try2 = 1;
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/* Put the chip into PCI loopback mode. */
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mb();
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ctrl = *(vip)CIA_IOC_CIA_CTRL;
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*(vip)CIA_IOC_CIA_CTRL = ctrl | CIA_CTRL_PCI_LOOP_EN;
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mb();
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*(vip)CIA_IOC_CIA_CTRL;
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mb();
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/* Write a valid entry directly into the TLB registers. */
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addr0 = arena->dma_base;
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tag0 = addr0 | 1;
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pte0 = (virt_to_phys(page) >> (PAGE_SHIFT - 1)) | 1;
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*(vip)CIA_IOC_TB_TAGn(0) = tag0;
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*(vip)CIA_IOC_TB_TAGn(1) = 0;
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*(vip)CIA_IOC_TB_TAGn(2) = 0;
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*(vip)CIA_IOC_TB_TAGn(3) = 0;
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*(vip)CIA_IOC_TB_TAGn(4) = 0;
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*(vip)CIA_IOC_TB_TAGn(5) = 0;
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*(vip)CIA_IOC_TB_TAGn(6) = 0;
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*(vip)CIA_IOC_TB_TAGn(7) = 0;
|
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*(vip)CIA_IOC_TBn_PAGEm(0,0) = pte0;
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*(vip)CIA_IOC_TBn_PAGEm(0,1) = 0;
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*(vip)CIA_IOC_TBn_PAGEm(0,2) = 0;
|
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*(vip)CIA_IOC_TBn_PAGEm(0,3) = 0;
|
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mb();
|
||
|
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/* Get a usable bus address */
|
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bus_addr = cia_ioremap(addr0, 8*PAGE_SIZE);
|
||
|
||
/* First, verify we can read back what we've written. If
|
||
this fails, we can't be sure of any of the other testing
|
||
we're going to do, so bail. */
|
||
/* ??? Actually, we could do the work with machine checks.
|
||
By passing this register update test, we pretty much
|
||
guarantee that cia_pci_tbi_try1 works. If this test
|
||
fails, cia_pci_tbi_try2 might still work. */
|
||
|
||
temp = *(vip)CIA_IOC_TB_TAGn(0);
|
||
if (temp != tag0) {
|
||
printk("pci: failed tb register update test "
|
||
"(tag0 %#x != %#x)\n", temp, tag0);
|
||
goto failed;
|
||
}
|
||
temp = *(vip)CIA_IOC_TB_TAGn(1);
|
||
if (temp != 0) {
|
||
printk("pci: failed tb register update test "
|
||
"(tag1 %#x != 0)\n", temp);
|
||
goto failed;
|
||
}
|
||
temp = *(vip)CIA_IOC_TBn_PAGEm(0,0);
|
||
if (temp != pte0) {
|
||
printk("pci: failed tb register update test "
|
||
"(pte0 %#x != %#x)\n", temp, pte0);
|
||
goto failed;
|
||
}
|
||
printk("pci: passed tb register update test\n");
|
||
|
||
/* Second, verify we can actually do I/O through this entry. */
|
||
|
||
data0 = 0xdeadbeef;
|
||
page[0] = data0;
|
||
mcheck_expected(0) = 1;
|
||
mcheck_taken(0) = 0;
|
||
mb();
|
||
temp = cia_readl(bus_addr);
|
||
mb();
|
||
mcheck_expected(0) = 0;
|
||
mb();
|
||
if (mcheck_taken(0)) {
|
||
printk("pci: failed sg loopback i/o read test (mcheck)\n");
|
||
goto failed;
|
||
}
|
||
if (temp != data0) {
|
||
printk("pci: failed sg loopback i/o read test "
|
||
"(%#x != %#x)\n", temp, data0);
|
||
goto failed;
|
||
}
|
||
printk("pci: passed sg loopback i/o read test\n");
|
||
|
||
/* Third, try to invalidate the TLB. */
|
||
|
||
if (! use_tbia_try2) {
|
||
cia_pci_tbi(arena->hose, 0, -1);
|
||
temp = *(vip)CIA_IOC_TB_TAGn(0);
|
||
if (temp & 1) {
|
||
use_tbia_try2 = 1;
|
||
printk("pci: failed tbia test; workaround available\n");
|
||
} else {
|
||
printk("pci: passed tbia test\n");
|
||
}
|
||
}
|
||
|
||
/* Fourth, verify the TLB snoops the EV5's caches when
|
||
doing a tlb fill. */
|
||
|
||
data0 = 0x5adda15e;
|
||
page[0] = data0;
|
||
arena->ptes[4] = pte0;
|
||
mcheck_expected(0) = 1;
|
||
mcheck_taken(0) = 0;
|
||
mb();
|
||
temp = cia_readl(bus_addr + 4*PAGE_SIZE);
|
||
mb();
|
||
mcheck_expected(0) = 0;
|
||
mb();
|
||
if (mcheck_taken(0)) {
|
||
printk("pci: failed pte write cache snoop test (mcheck)\n");
|
||
goto failed;
|
||
}
|
||
if (temp != data0) {
|
||
printk("pci: failed pte write cache snoop test "
|
||
"(%#x != %#x)\n", temp, data0);
|
||
goto failed;
|
||
}
|
||
printk("pci: passed pte write cache snoop test\n");
|
||
|
||
/* Fifth, verify that a previously invalid PTE entry gets
|
||
filled from the page table. */
|
||
|
||
data0 = 0xabcdef12;
|
||
page[0] = data0;
|
||
arena->ptes[5] = pte0;
|
||
mcheck_expected(0) = 1;
|
||
mcheck_taken(0) = 0;
|
||
mb();
|
||
temp = cia_readl(bus_addr + 5*PAGE_SIZE);
|
||
mb();
|
||
mcheck_expected(0) = 0;
|
||
mb();
|
||
if (mcheck_taken(0)) {
|
||
printk("pci: failed valid tag invalid pte reload test "
|
||
"(mcheck; workaround available)\n");
|
||
/* Work around this bug by aligning new allocations
|
||
on 4 page boundaries. */
|
||
arena->align_entry = 4;
|
||
} else if (temp != data0) {
|
||
printk("pci: failed valid tag invalid pte reload test "
|
||
"(%#x != %#x)\n", temp, data0);
|
||
goto failed;
|
||
} else {
|
||
printk("pci: passed valid tag invalid pte reload test\n");
|
||
}
|
||
|
||
/* Sixth, verify machine checks are working. Test invalid
|
||
pte under the same valid tag as we used above. */
|
||
|
||
mcheck_expected(0) = 1;
|
||
mcheck_taken(0) = 0;
|
||
mb();
|
||
temp = cia_readl(bus_addr + 6*PAGE_SIZE);
|
||
mb();
|
||
mcheck_expected(0) = 0;
|
||
mb();
|
||
printk("pci: %s pci machine check test\n",
|
||
mcheck_taken(0) ? "passed" : "failed");
|
||
|
||
/* Clean up after the tests. */
|
||
arena->ptes[4] = 0;
|
||
arena->ptes[5] = 0;
|
||
|
||
if (use_tbia_try2) {
|
||
alpha_mv.mv_pci_tbi = cia_pci_tbi_try2;
|
||
|
||
/* Tags 0-3 must be disabled if we use this workaraund. */
|
||
wmb();
|
||
*(vip)CIA_IOC_TB_TAGn(0) = 2;
|
||
*(vip)CIA_IOC_TB_TAGn(1) = 2;
|
||
*(vip)CIA_IOC_TB_TAGn(2) = 2;
|
||
*(vip)CIA_IOC_TB_TAGn(3) = 2;
|
||
|
||
printk("pci: tbia workaround enabled\n");
|
||
}
|
||
alpha_mv.mv_pci_tbi(arena->hose, 0, -1);
|
||
|
||
exit:
|
||
/* unmap the bus addr */
|
||
cia_iounmap(bus_addr);
|
||
|
||
/* Restore normal PCI operation. */
|
||
mb();
|
||
*(vip)CIA_IOC_CIA_CTRL = ctrl;
|
||
mb();
|
||
*(vip)CIA_IOC_CIA_CTRL;
|
||
mb();
|
||
return;
|
||
|
||
failed:
|
||
printk("pci: disabling sg translation window\n");
|
||
*(vip)CIA_IOC_PCI_W0_BASE = 0;
|
||
*(vip)CIA_IOC_PCI_W1_BASE = 0;
|
||
pci_isa_hose->sg_isa = NULL;
|
||
alpha_mv.mv_pci_tbi = NULL;
|
||
goto exit;
|
||
}
|
||
|
||
#if defined(ALPHA_RESTORE_SRM_SETUP)
|
||
/* Save CIA configuration data as the console had it set up. */
|
||
struct
|
||
{
|
||
unsigned int hae_mem;
|
||
unsigned int hae_io;
|
||
unsigned int pci_dac_offset;
|
||
unsigned int err_mask;
|
||
unsigned int cia_ctrl;
|
||
unsigned int cia_cnfg;
|
||
struct {
|
||
unsigned int w_base;
|
||
unsigned int w_mask;
|
||
unsigned int t_base;
|
||
} window[4];
|
||
} saved_config __attribute((common));
|
||
|
||
void
|
||
cia_save_srm_settings(int is_pyxis)
|
||
{
|
||
int i;
|
||
|
||
/* Save some important registers. */
|
||
saved_config.err_mask = *(vip)CIA_IOC_ERR_MASK;
|
||
saved_config.cia_ctrl = *(vip)CIA_IOC_CIA_CTRL;
|
||
saved_config.hae_mem = *(vip)CIA_IOC_HAE_MEM;
|
||
saved_config.hae_io = *(vip)CIA_IOC_HAE_IO;
|
||
saved_config.pci_dac_offset = *(vip)CIA_IOC_PCI_W_DAC;
|
||
|
||
if (is_pyxis)
|
||
saved_config.cia_cnfg = *(vip)CIA_IOC_CIA_CNFG;
|
||
else
|
||
saved_config.cia_cnfg = 0;
|
||
|
||
/* Save DMA windows configuration. */
|
||
for (i = 0; i < 4; i++) {
|
||
saved_config.window[i].w_base = *(vip)CIA_IOC_PCI_Wn_BASE(i);
|
||
saved_config.window[i].w_mask = *(vip)CIA_IOC_PCI_Wn_MASK(i);
|
||
saved_config.window[i].t_base = *(vip)CIA_IOC_PCI_Tn_BASE(i);
|
||
}
|
||
mb();
|
||
}
|
||
|
||
void
|
||
cia_restore_srm_settings(void)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < 4; i++) {
|
||
*(vip)CIA_IOC_PCI_Wn_BASE(i) = saved_config.window[i].w_base;
|
||
*(vip)CIA_IOC_PCI_Wn_MASK(i) = saved_config.window[i].w_mask;
|
||
*(vip)CIA_IOC_PCI_Tn_BASE(i) = saved_config.window[i].t_base;
|
||
}
|
||
|
||
*(vip)CIA_IOC_HAE_MEM = saved_config.hae_mem;
|
||
*(vip)CIA_IOC_HAE_IO = saved_config.hae_io;
|
||
*(vip)CIA_IOC_PCI_W_DAC = saved_config.pci_dac_offset;
|
||
*(vip)CIA_IOC_ERR_MASK = saved_config.err_mask;
|
||
*(vip)CIA_IOC_CIA_CTRL = saved_config.cia_ctrl;
|
||
|
||
if (saved_config.cia_cnfg) /* Must be pyxis. */
|
||
*(vip)CIA_IOC_CIA_CNFG = saved_config.cia_cnfg;
|
||
|
||
mb();
|
||
}
|
||
#else /* ALPHA_RESTORE_SRM_SETUP */
|
||
#define cia_save_srm_settings(p) do {} while (0)
|
||
#define cia_restore_srm_settings() do {} while (0)
|
||
#endif /* ALPHA_RESTORE_SRM_SETUP */
|
||
|
||
|
||
static void __init
|
||
do_init_arch(int is_pyxis)
|
||
{
|
||
struct pci_controller *hose;
|
||
int temp, cia_rev, tbia_window;
|
||
|
||
cia_rev = *(vip)CIA_IOC_CIA_REV & CIA_REV_MASK;
|
||
printk("pci: cia revision %d%s\n",
|
||
cia_rev, is_pyxis ? " (pyxis)" : "");
|
||
|
||
if (alpha_using_srm)
|
||
cia_save_srm_settings(is_pyxis);
|
||
|
||
/* Set up error reporting. */
|
||
temp = *(vip)CIA_IOC_ERR_MASK;
|
||
temp &= ~(CIA_ERR_CPU_PE | CIA_ERR_MEM_NEM | CIA_ERR_PA_PTE_INV
|
||
| CIA_ERR_RCVD_MAS_ABT | CIA_ERR_RCVD_TAR_ABT);
|
||
*(vip)CIA_IOC_ERR_MASK = temp;
|
||
|
||
/* Clear all currently pending errors. */
|
||
temp = *(vip)CIA_IOC_CIA_ERR;
|
||
*(vip)CIA_IOC_CIA_ERR = temp;
|
||
|
||
/* Turn on mchecks. */
|
||
temp = *(vip)CIA_IOC_CIA_CTRL;
|
||
temp |= CIA_CTRL_FILL_ERR_EN | CIA_CTRL_MCHK_ERR_EN;
|
||
*(vip)CIA_IOC_CIA_CTRL = temp;
|
||
|
||
/* Clear the CFG register, which gets used for PCI config space
|
||
accesses. That is the way we want to use it, and we do not
|
||
want to depend on what ARC or SRM might have left behind. */
|
||
*(vip)CIA_IOC_CFG = 0;
|
||
|
||
/* Zero the HAEs. */
|
||
*(vip)CIA_IOC_HAE_MEM = 0;
|
||
*(vip)CIA_IOC_HAE_IO = 0;
|
||
|
||
/* For PYXIS, we always use BWX bus and i/o accesses. To that end,
|
||
make sure they're enabled on the controller. At the same time,
|
||
enable the monster window. */
|
||
if (is_pyxis) {
|
||
temp = *(vip)CIA_IOC_CIA_CNFG;
|
||
temp |= CIA_CNFG_IOA_BWEN | CIA_CNFG_PCI_MWEN;
|
||
*(vip)CIA_IOC_CIA_CNFG = temp;
|
||
}
|
||
|
||
/* Synchronize with all previous changes. */
|
||
mb();
|
||
*(vip)CIA_IOC_CIA_REV;
|
||
|
||
/*
|
||
* Create our single hose.
|
||
*/
|
||
|
||
pci_isa_hose = hose = alloc_pci_controller();
|
||
hose->io_space = &ioport_resource;
|
||
hose->mem_space = &iomem_resource;
|
||
hose->index = 0;
|
||
|
||
if (! is_pyxis) {
|
||
struct resource *hae_mem = alloc_resource();
|
||
hose->mem_space = hae_mem;
|
||
|
||
hae_mem->start = 0;
|
||
hae_mem->end = CIA_MEM_R1_MASK;
|
||
hae_mem->name = pci_hae0_name;
|
||
hae_mem->flags = IORESOURCE_MEM;
|
||
|
||
if (request_resource(&iomem_resource, hae_mem) < 0)
|
||
printk(KERN_ERR "Failed to request HAE_MEM\n");
|
||
|
||
hose->sparse_mem_base = CIA_SPARSE_MEM - IDENT_ADDR;
|
||
hose->dense_mem_base = CIA_DENSE_MEM - IDENT_ADDR;
|
||
hose->sparse_io_base = CIA_IO - IDENT_ADDR;
|
||
hose->dense_io_base = 0;
|
||
} else {
|
||
hose->sparse_mem_base = 0;
|
||
hose->dense_mem_base = CIA_BW_MEM - IDENT_ADDR;
|
||
hose->sparse_io_base = 0;
|
||
hose->dense_io_base = CIA_BW_IO - IDENT_ADDR;
|
||
}
|
||
|
||
/*
|
||
* Set up the PCI to main memory translation windows.
|
||
*
|
||
* Window 0 is S/G 8MB at 8MB (for isa)
|
||
* Window 1 is S/G 1MB at 768MB (for tbia) (unused for CIA rev 1)
|
||
* Window 2 is direct access 2GB at 2GB
|
||
* Window 3 is DAC access 4GB at 8GB (or S/G for tbia if CIA rev 1)
|
||
*
|
||
* ??? NetBSD hints that page tables must be aligned to 32K,
|
||
* possibly due to a hardware bug. This is over-aligned
|
||
* from the 8K alignment one would expect for an 8MB window.
|
||
* No description of what revisions affected.
|
||
*/
|
||
|
||
hose->sg_pci = NULL;
|
||
hose->sg_isa = iommu_arena_new(hose, 0x00800000, 0x00800000, 32768);
|
||
|
||
__direct_map_base = 0x80000000;
|
||
__direct_map_size = 0x80000000;
|
||
|
||
*(vip)CIA_IOC_PCI_W0_BASE = hose->sg_isa->dma_base | 3;
|
||
*(vip)CIA_IOC_PCI_W0_MASK = (hose->sg_isa->size - 1) & 0xfff00000;
|
||
*(vip)CIA_IOC_PCI_T0_BASE = virt_to_phys(hose->sg_isa->ptes) >> 2;
|
||
|
||
*(vip)CIA_IOC_PCI_W2_BASE = __direct_map_base | 1;
|
||
*(vip)CIA_IOC_PCI_W2_MASK = (__direct_map_size - 1) & 0xfff00000;
|
||
*(vip)CIA_IOC_PCI_T2_BASE = 0 >> 2;
|
||
|
||
/* On PYXIS we have the monster window, selected by bit 40, so
|
||
there is no need for window3 to be enabled.
|
||
|
||
On CIA, we don't have true arbitrary addressing -- bits <39:32>
|
||
are compared against W_DAC. We can, however, directly map 4GB,
|
||
which is better than before. However, due to assumptions made
|
||
elsewhere, we should not claim that we support DAC unless that
|
||
4GB covers all of physical memory.
|
||
|
||
On CIA rev 1, apparently W1 and W2 can't be used for SG.
|
||
At least, there are reports that it doesn't work for Alcor.
|
||
In that case, we have no choice but to use W3 for the TBIA
|
||
workaround, which means we can't use DAC at all. */
|
||
|
||
tbia_window = 1;
|
||
if (is_pyxis) {
|
||
*(vip)CIA_IOC_PCI_W3_BASE = 0;
|
||
} else if (cia_rev == 1) {
|
||
*(vip)CIA_IOC_PCI_W1_BASE = 0;
|
||
tbia_window = 3;
|
||
} else if (max_low_pfn > (0x100000000UL >> PAGE_SHIFT)) {
|
||
*(vip)CIA_IOC_PCI_W3_BASE = 0;
|
||
} else {
|
||
*(vip)CIA_IOC_PCI_W3_BASE = 0x00000000 | 1 | 8;
|
||
*(vip)CIA_IOC_PCI_W3_MASK = 0xfff00000;
|
||
*(vip)CIA_IOC_PCI_T3_BASE = 0 >> 2;
|
||
|
||
alpha_mv.pci_dac_offset = 0x200000000UL;
|
||
*(vip)CIA_IOC_PCI_W_DAC = alpha_mv.pci_dac_offset >> 32;
|
||
}
|
||
|
||
/* Prepare workaround for apparently broken tbia. */
|
||
cia_prepare_tbia_workaround(tbia_window);
|
||
}
|
||
|
||
void __init
|
||
cia_init_arch(void)
|
||
{
|
||
do_init_arch(0);
|
||
}
|
||
|
||
void __init
|
||
pyxis_init_arch(void)
|
||
{
|
||
/* On pyxis machines we can precisely calculate the
|
||
CPU clock frequency using pyxis real time counter.
|
||
It's especially useful for SX164 with broken RTC.
|
||
|
||
Both CPU and chipset are driven by the single 16.666M
|
||
or 16.667M crystal oscillator. PYXIS_RT_COUNT clock is
|
||
66.66 MHz. -ink */
|
||
|
||
unsigned int cc0, cc1;
|
||
unsigned long pyxis_cc;
|
||
|
||
__asm__ __volatile__ ("rpcc %0" : "=r"(cc0));
|
||
pyxis_cc = *(vulp)PYXIS_RT_COUNT;
|
||
do { } while(*(vulp)PYXIS_RT_COUNT - pyxis_cc < 4096);
|
||
__asm__ __volatile__ ("rpcc %0" : "=r"(cc1));
|
||
cc1 -= cc0;
|
||
hwrpb->cycle_freq = ((cc1 >> 11) * 100000000UL) / 3;
|
||
hwrpb_update_checksum(hwrpb);
|
||
|
||
do_init_arch(1);
|
||
}
|
||
|
||
void
|
||
cia_kill_arch(int mode)
|
||
{
|
||
if (alpha_using_srm)
|
||
cia_restore_srm_settings();
|
||
}
|
||
|
||
void __init
|
||
cia_init_pci(void)
|
||
{
|
||
/* Must delay this from init_arch, as we need machine checks. */
|
||
verify_tb_operation();
|
||
common_init_pci();
|
||
}
|
||
|
||
static inline void
|
||
cia_pci_clr_err(void)
|
||
{
|
||
int jd;
|
||
|
||
jd = *(vip)CIA_IOC_CIA_ERR;
|
||
*(vip)CIA_IOC_CIA_ERR = jd;
|
||
mb();
|
||
*(vip)CIA_IOC_CIA_ERR; /* re-read to force write. */
|
||
}
|
||
|
||
#ifdef CONFIG_VERBOSE_MCHECK
|
||
static void
|
||
cia_decode_pci_error(struct el_CIA_sysdata_mcheck *cia, const char *msg)
|
||
{
|
||
static const char * const pci_cmd_desc[16] = {
|
||
"Interrupt Acknowledge", "Special Cycle", "I/O Read",
|
||
"I/O Write", "Reserved 0x4", "Reserved 0x5", "Memory Read",
|
||
"Memory Write", "Reserved 0x8", "Reserved 0x9",
|
||
"Configuration Read", "Configuration Write",
|
||
"Memory Read Multiple", "Dual Address Cycle",
|
||
"Memory Read Line", "Memory Write and Invalidate"
|
||
};
|
||
|
||
if (cia->cia_err & (CIA_ERR_COR_ERR
|
||
| CIA_ERR_UN_COR_ERR
|
||
| CIA_ERR_MEM_NEM
|
||
| CIA_ERR_PA_PTE_INV)) {
|
||
static const char * const window_desc[6] = {
|
||
"No window active", "Window 0 hit", "Window 1 hit",
|
||
"Window 2 hit", "Window 3 hit", "Monster window hit"
|
||
};
|
||
|
||
const char *window;
|
||
const char *cmd;
|
||
unsigned long addr, tmp;
|
||
int lock, dac;
|
||
|
||
cmd = pci_cmd_desc[cia->pci_err0 & 0x7];
|
||
lock = (cia->pci_err0 >> 4) & 1;
|
||
dac = (cia->pci_err0 >> 5) & 1;
|
||
|
||
tmp = (cia->pci_err0 >> 8) & 0x1F;
|
||
tmp = ffs(tmp);
|
||
window = window_desc[tmp];
|
||
|
||
addr = cia->pci_err1;
|
||
if (dac) {
|
||
tmp = *(vip)CIA_IOC_PCI_W_DAC & 0xFFUL;
|
||
addr |= tmp << 32;
|
||
}
|
||
|
||
printk(KERN_CRIT "CIA machine check: %s\n", msg);
|
||
printk(KERN_CRIT " DMA command: %s\n", cmd);
|
||
printk(KERN_CRIT " PCI address: %#010lx\n", addr);
|
||
printk(KERN_CRIT " %s, Lock: %d, DAC: %d\n",
|
||
window, lock, dac);
|
||
} else if (cia->cia_err & (CIA_ERR_PERR
|
||
| CIA_ERR_PCI_ADDR_PE
|
||
| CIA_ERR_RCVD_MAS_ABT
|
||
| CIA_ERR_RCVD_TAR_ABT
|
||
| CIA_ERR_IOA_TIMEOUT)) {
|
||
static const char * const master_st_desc[16] = {
|
||
"Idle", "Drive bus", "Address step cycle",
|
||
"Address cycle", "Data cycle", "Last read data cycle",
|
||
"Last write data cycle", "Read stop cycle",
|
||
"Write stop cycle", "Read turnaround cycle",
|
||
"Write turnaround cycle", "Reserved 0xB",
|
||
"Reserved 0xC", "Reserved 0xD", "Reserved 0xE",
|
||
"Unknown state"
|
||
};
|
||
static const char * const target_st_desc[16] = {
|
||
"Idle", "Busy", "Read data cycle", "Write data cycle",
|
||
"Read stop cycle", "Write stop cycle",
|
||
"Read turnaround cycle", "Write turnaround cycle",
|
||
"Read wait cycle", "Write wait cycle",
|
||
"Reserved 0xA", "Reserved 0xB", "Reserved 0xC",
|
||
"Reserved 0xD", "Reserved 0xE", "Unknown state"
|
||
};
|
||
|
||
const char *cmd;
|
||
const char *master, *target;
|
||
unsigned long addr, tmp;
|
||
int dac;
|
||
|
||
master = master_st_desc[(cia->pci_err0 >> 16) & 0xF];
|
||
target = target_st_desc[(cia->pci_err0 >> 20) & 0xF];
|
||
cmd = pci_cmd_desc[(cia->pci_err0 >> 24) & 0xF];
|
||
dac = (cia->pci_err0 >> 28) & 1;
|
||
|
||
addr = cia->pci_err2;
|
||
if (dac) {
|
||
tmp = *(volatile int *)CIA_IOC_PCI_W_DAC & 0xFFUL;
|
||
addr |= tmp << 32;
|
||
}
|
||
|
||
printk(KERN_CRIT "CIA machine check: %s\n", msg);
|
||
printk(KERN_CRIT " PCI command: %s\n", cmd);
|
||
printk(KERN_CRIT " Master state: %s, Target state: %s\n",
|
||
master, target);
|
||
printk(KERN_CRIT " PCI address: %#010lx, DAC: %d\n",
|
||
addr, dac);
|
||
} else {
|
||
printk(KERN_CRIT "CIA machine check: %s\n", msg);
|
||
printk(KERN_CRIT " Unknown PCI error\n");
|
||
printk(KERN_CRIT " PCI_ERR0 = %#08lx", cia->pci_err0);
|
||
printk(KERN_CRIT " PCI_ERR1 = %#08lx", cia->pci_err1);
|
||
printk(KERN_CRIT " PCI_ERR2 = %#08lx", cia->pci_err2);
|
||
}
|
||
}
|
||
|
||
static void
|
||
cia_decode_mem_error(struct el_CIA_sysdata_mcheck *cia, const char *msg)
|
||
{
|
||
unsigned long mem_port_addr;
|
||
unsigned long mem_port_mask;
|
||
const char *mem_port_cmd;
|
||
const char *seq_state;
|
||
const char *set_select;
|
||
unsigned long tmp;
|
||
|
||
/* If this is a DMA command, also decode the PCI bits. */
|
||
if ((cia->mem_err1 >> 20) & 1)
|
||
cia_decode_pci_error(cia, msg);
|
||
else
|
||
printk(KERN_CRIT "CIA machine check: %s\n", msg);
|
||
|
||
mem_port_addr = cia->mem_err0 & 0xfffffff0;
|
||
mem_port_addr |= (cia->mem_err1 & 0x83UL) << 32;
|
||
|
||
mem_port_mask = (cia->mem_err1 >> 12) & 0xF;
|
||
|
||
tmp = (cia->mem_err1 >> 8) & 0xF;
|
||
tmp |= ((cia->mem_err1 >> 20) & 1) << 4;
|
||
if ((tmp & 0x1E) == 0x06)
|
||
mem_port_cmd = "WRITE BLOCK or WRITE BLOCK LOCK";
|
||
else if ((tmp & 0x1C) == 0x08)
|
||
mem_port_cmd = "READ MISS or READ MISS MODIFY";
|
||
else if (tmp == 0x1C)
|
||
mem_port_cmd = "BC VICTIM";
|
||
else if ((tmp & 0x1E) == 0x0E)
|
||
mem_port_cmd = "READ MISS MODIFY";
|
||
else if ((tmp & 0x1C) == 0x18)
|
||
mem_port_cmd = "DMA READ or DMA READ MODIFY";
|
||
else if ((tmp & 0x1E) == 0x12)
|
||
mem_port_cmd = "DMA WRITE";
|
||
else
|
||
mem_port_cmd = "Unknown";
|
||
|
||
tmp = (cia->mem_err1 >> 16) & 0xF;
|
||
switch (tmp) {
|
||
case 0x0:
|
||
seq_state = "Idle";
|
||
break;
|
||
case 0x1:
|
||
seq_state = "DMA READ or DMA WRITE";
|
||
break;
|
||
case 0x2: case 0x3:
|
||
seq_state = "READ MISS (or READ MISS MODIFY) with victim";
|
||
break;
|
||
case 0x4: case 0x5: case 0x6:
|
||
seq_state = "READ MISS (or READ MISS MODIFY) with no victim";
|
||
break;
|
||
case 0x8: case 0x9: case 0xB:
|
||
seq_state = "Refresh";
|
||
break;
|
||
case 0xC:
|
||
seq_state = "Idle, waiting for DMA pending read";
|
||
break;
|
||
case 0xE: case 0xF:
|
||
seq_state = "Idle, ras precharge";
|
||
break;
|
||
default:
|
||
seq_state = "Unknown";
|
||
break;
|
||
}
|
||
|
||
tmp = (cia->mem_err1 >> 24) & 0x1F;
|
||
switch (tmp) {
|
||
case 0x00: set_select = "Set 0 selected"; break;
|
||
case 0x01: set_select = "Set 1 selected"; break;
|
||
case 0x02: set_select = "Set 2 selected"; break;
|
||
case 0x03: set_select = "Set 3 selected"; break;
|
||
case 0x04: set_select = "Set 4 selected"; break;
|
||
case 0x05: set_select = "Set 5 selected"; break;
|
||
case 0x06: set_select = "Set 6 selected"; break;
|
||
case 0x07: set_select = "Set 7 selected"; break;
|
||
case 0x08: set_select = "Set 8 selected"; break;
|
||
case 0x09: set_select = "Set 9 selected"; break;
|
||
case 0x0A: set_select = "Set A selected"; break;
|
||
case 0x0B: set_select = "Set B selected"; break;
|
||
case 0x0C: set_select = "Set C selected"; break;
|
||
case 0x0D: set_select = "Set D selected"; break;
|
||
case 0x0E: set_select = "Set E selected"; break;
|
||
case 0x0F: set_select = "Set F selected"; break;
|
||
case 0x10: set_select = "No set selected"; break;
|
||
case 0x1F: set_select = "Refresh cycle"; break;
|
||
default: set_select = "Unknown"; break;
|
||
}
|
||
|
||
printk(KERN_CRIT " Memory port command: %s\n", mem_port_cmd);
|
||
printk(KERN_CRIT " Memory port address: %#010lx, mask: %#lx\n",
|
||
mem_port_addr, mem_port_mask);
|
||
printk(KERN_CRIT " Memory sequencer state: %s\n", seq_state);
|
||
printk(KERN_CRIT " Memory set: %s\n", set_select);
|
||
}
|
||
|
||
static void
|
||
cia_decode_ecc_error(struct el_CIA_sysdata_mcheck *cia, const char *msg)
|
||
{
|
||
long syn;
|
||
long i;
|
||
const char *fmt;
|
||
|
||
cia_decode_mem_error(cia, msg);
|
||
|
||
syn = cia->cia_syn & 0xff;
|
||
if (syn == (syn & -syn)) {
|
||
fmt = KERN_CRIT " ECC syndrome %#x -- check bit %d\n";
|
||
i = ffs(syn) - 1;
|
||
} else {
|
||
static unsigned char const data_bit[64] = {
|
||
0xCE, 0xCB, 0xD3, 0xD5,
|
||
0xD6, 0xD9, 0xDA, 0xDC,
|
||
0x23, 0x25, 0x26, 0x29,
|
||
0x2A, 0x2C, 0x31, 0x34,
|
||
0x0E, 0x0B, 0x13, 0x15,
|
||
0x16, 0x19, 0x1A, 0x1C,
|
||
0xE3, 0xE5, 0xE6, 0xE9,
|
||
0xEA, 0xEC, 0xF1, 0xF4,
|
||
0x4F, 0x4A, 0x52, 0x54,
|
||
0x57, 0x58, 0x5B, 0x5D,
|
||
0xA2, 0xA4, 0xA7, 0xA8,
|
||
0xAB, 0xAD, 0xB0, 0xB5,
|
||
0x8F, 0x8A, 0x92, 0x94,
|
||
0x97, 0x98, 0x9B, 0x9D,
|
||
0x62, 0x64, 0x67, 0x68,
|
||
0x6B, 0x6D, 0x70, 0x75
|
||
};
|
||
|
||
for (i = 0; i < 64; ++i)
|
||
if (data_bit[i] == syn)
|
||
break;
|
||
|
||
if (i < 64)
|
||
fmt = KERN_CRIT " ECC syndrome %#x -- data bit %d\n";
|
||
else
|
||
fmt = KERN_CRIT " ECC syndrome %#x -- unknown bit\n";
|
||
}
|
||
|
||
printk (fmt, syn, i);
|
||
}
|
||
|
||
static void
|
||
cia_decode_parity_error(struct el_CIA_sysdata_mcheck *cia)
|
||
{
|
||
static const char * const cmd_desc[16] = {
|
||
"NOP", "LOCK", "FETCH", "FETCH_M", "MEMORY BARRIER",
|
||
"SET DIRTY", "WRITE BLOCK", "WRITE BLOCK LOCK",
|
||
"READ MISS0", "READ MISS1", "READ MISS MOD0",
|
||
"READ MISS MOD1", "BCACHE VICTIM", "Spare",
|
||
"READ MISS MOD STC0", "READ MISS MOD STC1"
|
||
};
|
||
|
||
unsigned long addr;
|
||
unsigned long mask;
|
||
const char *cmd;
|
||
int par;
|
||
|
||
addr = cia->cpu_err0 & 0xfffffff0;
|
||
addr |= (cia->cpu_err1 & 0x83UL) << 32;
|
||
cmd = cmd_desc[(cia->cpu_err1 >> 8) & 0xF];
|
||
mask = (cia->cpu_err1 >> 12) & 0xF;
|
||
par = (cia->cpu_err1 >> 21) & 1;
|
||
|
||
printk(KERN_CRIT "CIA machine check: System bus parity error\n");
|
||
printk(KERN_CRIT " Command: %s, Parity bit: %d\n", cmd, par);
|
||
printk(KERN_CRIT " Address: %#010lx, Mask: %#lx\n", addr, mask);
|
||
}
|
||
#endif /* CONFIG_VERBOSE_MCHECK */
|
||
|
||
|
||
static int
|
||
cia_decode_mchk(unsigned long la_ptr)
|
||
{
|
||
struct el_common *com;
|
||
struct el_CIA_sysdata_mcheck *cia;
|
||
|
||
com = (void *)la_ptr;
|
||
cia = (void *)(la_ptr + com->sys_offset);
|
||
|
||
if ((cia->cia_err & CIA_ERR_VALID) == 0)
|
||
return 0;
|
||
|
||
#ifdef CONFIG_VERBOSE_MCHECK
|
||
if (!alpha_verbose_mcheck)
|
||
return 1;
|
||
|
||
switch (ffs(cia->cia_err & 0xfff) - 1) {
|
||
case 0: /* CIA_ERR_COR_ERR */
|
||
cia_decode_ecc_error(cia, "Corrected ECC error");
|
||
break;
|
||
case 1: /* CIA_ERR_UN_COR_ERR */
|
||
cia_decode_ecc_error(cia, "Uncorrected ECC error");
|
||
break;
|
||
case 2: /* CIA_ERR_CPU_PE */
|
||
cia_decode_parity_error(cia);
|
||
break;
|
||
case 3: /* CIA_ERR_MEM_NEM */
|
||
cia_decode_mem_error(cia, "Access to nonexistent memory");
|
||
break;
|
||
case 4: /* CIA_ERR_PCI_SERR */
|
||
cia_decode_pci_error(cia, "PCI bus system error");
|
||
break;
|
||
case 5: /* CIA_ERR_PERR */
|
||
cia_decode_pci_error(cia, "PCI data parity error");
|
||
break;
|
||
case 6: /* CIA_ERR_PCI_ADDR_PE */
|
||
cia_decode_pci_error(cia, "PCI address parity error");
|
||
break;
|
||
case 7: /* CIA_ERR_RCVD_MAS_ABT */
|
||
cia_decode_pci_error(cia, "PCI master abort");
|
||
break;
|
||
case 8: /* CIA_ERR_RCVD_TAR_ABT */
|
||
cia_decode_pci_error(cia, "PCI target abort");
|
||
break;
|
||
case 9: /* CIA_ERR_PA_PTE_INV */
|
||
cia_decode_pci_error(cia, "PCI invalid PTE");
|
||
break;
|
||
case 10: /* CIA_ERR_FROM_WRT_ERR */
|
||
cia_decode_mem_error(cia, "Write to flash ROM attempted");
|
||
break;
|
||
case 11: /* CIA_ERR_IOA_TIMEOUT */
|
||
cia_decode_pci_error(cia, "I/O timeout");
|
||
break;
|
||
}
|
||
|
||
if (cia->cia_err & CIA_ERR_LOST_CORR_ERR)
|
||
printk(KERN_CRIT "CIA lost machine check: "
|
||
"Correctable ECC error\n");
|
||
if (cia->cia_err & CIA_ERR_LOST_UN_CORR_ERR)
|
||
printk(KERN_CRIT "CIA lost machine check: "
|
||
"Uncorrectable ECC error\n");
|
||
if (cia->cia_err & CIA_ERR_LOST_CPU_PE)
|
||
printk(KERN_CRIT "CIA lost machine check: "
|
||
"System bus parity error\n");
|
||
if (cia->cia_err & CIA_ERR_LOST_MEM_NEM)
|
||
printk(KERN_CRIT "CIA lost machine check: "
|
||
"Access to nonexistent memory\n");
|
||
if (cia->cia_err & CIA_ERR_LOST_PERR)
|
||
printk(KERN_CRIT "CIA lost machine check: "
|
||
"PCI data parity error\n");
|
||
if (cia->cia_err & CIA_ERR_LOST_PCI_ADDR_PE)
|
||
printk(KERN_CRIT "CIA lost machine check: "
|
||
"PCI address parity error\n");
|
||
if (cia->cia_err & CIA_ERR_LOST_RCVD_MAS_ABT)
|
||
printk(KERN_CRIT "CIA lost machine check: "
|
||
"PCI master abort\n");
|
||
if (cia->cia_err & CIA_ERR_LOST_RCVD_TAR_ABT)
|
||
printk(KERN_CRIT "CIA lost machine check: "
|
||
"PCI target abort\n");
|
||
if (cia->cia_err & CIA_ERR_LOST_PA_PTE_INV)
|
||
printk(KERN_CRIT "CIA lost machine check: "
|
||
"PCI invalid PTE\n");
|
||
if (cia->cia_err & CIA_ERR_LOST_FROM_WRT_ERR)
|
||
printk(KERN_CRIT "CIA lost machine check: "
|
||
"Write to flash ROM attempted\n");
|
||
if (cia->cia_err & CIA_ERR_LOST_IOA_TIMEOUT)
|
||
printk(KERN_CRIT "CIA lost machine check: "
|
||
"I/O timeout\n");
|
||
#endif /* CONFIG_VERBOSE_MCHECK */
|
||
|
||
return 1;
|
||
}
|
||
|
||
void
|
||
cia_machine_check(unsigned long vector, unsigned long la_ptr)
|
||
{
|
||
int expected;
|
||
|
||
/* Clear the error before any reporting. */
|
||
mb();
|
||
mb(); /* magic */
|
||
draina();
|
||
cia_pci_clr_err();
|
||
wrmces(rdmces()); /* reset machine check pending flag. */
|
||
mb();
|
||
|
||
expected = mcheck_expected(0);
|
||
if (!expected && vector == 0x660)
|
||
expected = cia_decode_mchk(la_ptr);
|
||
process_mcheck_info(vector, la_ptr, "CIA", expected);
|
||
}
|