Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 274 insertions, 0 deletions

diff --git a/arch/alpha/kernel/err_ev6.c b/arch/alpha/kernel/err_ev6.c
new file mode 100644
index 000000000000..64f59f2fcf5c
--- /dev/null
+++ b/arch/alpha/kernel/err_ev6.c
@@ -0,0 +1,274 @@
+/*
+ *      linux/arch/alpha/kernel/err_ev6.c
+ *
+ *      Copyright (C) 2000 Jeff Wiedemeier (Compaq Computer Corporation)
+ *
+ *      Error handling code supporting Alpha systems
+ */
+
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/sched.h>
+
+#include <asm/io.h>
+#include <asm/hwrpb.h>
+#include <asm/smp.h>
+#include <asm/err_common.h>
+#include <asm/err_ev6.h>
+
+#include "err_impl.h"
+#include "proto.h"
+
+static int
+ev6_parse_ibox(u64 i_stat, int print)
+{
+        int status = MCHK_DISPOSITION_REPORT;
+
+#define EV6__I_STAT__PAR        (1UL << 29)
+#define EV6__I_STAT__ERRMASK    (EV6__I_STAT__PAR)
+
+        if (!(i_stat & EV6__I_STAT__ERRMASK))
+                return MCHK_DISPOSITION_UNKNOWN_ERROR;
+
+        if (!print)
+                return status;
+
+        if (i_stat & EV6__I_STAT__PAR)
+                printk("%s    Icache parity error\n", err_print_prefix);
+
+        return status;
+}
+
+static int
+ev6_parse_mbox(u64 mm_stat, u64 d_stat, u64 c_stat, int print)
+{
+        int status = MCHK_DISPOSITION_REPORT;
+
+#define EV6__MM_STAT__DC_TAG_PERR       (1UL << 10)
+#define EV6__MM_STAT__ERRMASK           (EV6__MM_STAT__DC_TAG_PERR)
+#define EV6__D_STAT__TPERR_P0           (1UL << 0)
+#define EV6__D_STAT__TPERR_P1           (1UL << 1)
+#define EV6__D_STAT__ECC_ERR_ST         (1UL << 2)
+#define EV6__D_STAT__ECC_ERR_LD         (1UL << 3)
+#define EV6__D_STAT__SEO                (1UL << 4)
+#define EV6__D_STAT__ERRMASK            (EV6__D_STAT__TPERR_P0 |        \
+                                         EV6__D_STAT__TPERR_P1 |        \
+                                         EV6__D_STAT__ECC_ERR_ST |      \
+                                         EV6__D_STAT__ECC_ERR_LD |      \
+                                         EV6__D_STAT__SEO)
+
+        if (!(d_stat & EV6__D_STAT__ERRMASK) && 
+            !(mm_stat & EV6__MM_STAT__ERRMASK))
+                return MCHK_DISPOSITION_UNKNOWN_ERROR;
+
+        if (!print)
+                return status;
+
+        if (mm_stat & EV6__MM_STAT__DC_TAG_PERR)
+                printk("%s    Dcache tag parity error on probe\n",
+                       err_print_prefix);
+        if (d_stat & EV6__D_STAT__TPERR_P0)
+                printk("%s    Dcache tag parity error - pipe 0\n",
+                       err_print_prefix);
+        if (d_stat & EV6__D_STAT__TPERR_P1)
+                printk("%s    Dcache tag parity error - pipe 1\n",
+                       err_print_prefix);
+        if (d_stat & EV6__D_STAT__ECC_ERR_ST)
+                printk("%s    ECC error occurred on a store\n", 
+                       err_print_prefix);
+        if (d_stat & EV6__D_STAT__ECC_ERR_LD)
+                printk("%s    ECC error occurred on a %s load\n",
+                       err_print_prefix,
+                       c_stat ? "" : "speculative ");
+        if (d_stat & EV6__D_STAT__SEO)
+                printk("%s    Dcache second error\n", err_print_prefix);
+
+        return status;
+}
+
+static int
+ev6_parse_cbox(u64 c_addr, u64 c1_syn, u64 c2_syn, 
+               u64 c_stat, u64 c_sts, int print)
+{
+        char *sourcename[] = { "UNKNOWN", "UNKNOWN", "UNKNOWN",
+                               "MEMORY", "BCACHE", "DCACHE", 
+                               "BCACHE PROBE", "BCACHE PROBE" };
+        char *streamname[] = { "D", "I" };
+        char *bitsname[] = { "SINGLE", "DOUBLE" };
+        int status = MCHK_DISPOSITION_REPORT;
+        int source = -1, stream = -1, bits = -1;
+
+#define EV6__C_STAT__BC_PERR            (0x01)
+#define EV6__C_STAT__DC_PERR            (0x02)
+#define EV6__C_STAT__DSTREAM_MEM_ERR    (0x03)
+#define EV6__C_STAT__DSTREAM_BC_ERR     (0x04)
+#define EV6__C_STAT__DSTREAM_DC_ERR     (0x05)
+#define EV6__C_STAT__PROBE_BC_ERR0      (0x06)  /* both 6 and 7 indicate... */
+#define EV6__C_STAT__PROBE_BC_ERR1      (0x07)  /* ...probe bc error.       */
+#define EV6__C_STAT__ISTREAM_MEM_ERR    (0x0B)
+#define EV6__C_STAT__ISTREAM_BC_ERR     (0x0C)
+#define EV6__C_STAT__DSTREAM_MEM_DBL    (0x13)
+#define EV6__C_STAT__DSTREAM_BC_DBL     (0x14)
+#define EV6__C_STAT__ISTREAM_MEM_DBL    (0x1B)
+#define EV6__C_STAT__ISTREAM_BC_DBL     (0x1C)
+#define EV6__C_STAT__SOURCE_MEMORY      (0x03)
+#define EV6__C_STAT__SOURCE_BCACHE      (0x04)
+#define EV6__C_STAT__SOURCE__S          (0)
+#define EV6__C_STAT__SOURCE__M          (0x07)
+#define EV6__C_STAT__ISTREAM__S         (3)
+#define EV6__C_STAT__ISTREAM__M         (0x01)
+#define EV6__C_STAT__DOUBLE__S          (4)
+#define EV6__C_STAT__DOUBLE__M          (0x01)
+#define EV6__C_STAT__ERRMASK            (0x1F)
+#define EV6__C_STS__SHARED              (1 << 0)
+#define EV6__C_STS__DIRTY               (1 << 1)
+#define EV6__C_STS__VALID               (1 << 2)
+#define EV6__C_STS__PARITY              (1 << 3)
+
+        if (!(c_stat & EV6__C_STAT__ERRMASK))
+                return MCHK_DISPOSITION_UNKNOWN_ERROR;
+
+        if (!print)
+                return status;
+
+        source = EXTRACT(c_stat, EV6__C_STAT__SOURCE);
+        stream = EXTRACT(c_stat, EV6__C_STAT__ISTREAM);
+        bits = EXTRACT(c_stat, EV6__C_STAT__DOUBLE);
+
+        if (c_stat & EV6__C_STAT__BC_PERR) {
+                printk("%s    Bcache tag parity error\n", err_print_prefix);
+                source = -1;
+        }
+
+        if (c_stat & EV6__C_STAT__DC_PERR) {
+                printk("%s    Dcache tag parity error\n", err_print_prefix);
+                source = -1;
+        }
+
+        if (c_stat == EV6__C_STAT__PROBE_BC_ERR0 ||
+            c_stat == EV6__C_STAT__PROBE_BC_ERR1) {
+                printk("%s    Bcache single-bit error on a probe hit\n",
+                       err_print_prefix);
+                source = -1;
+        }
+
+        if (source != -1) 
+                printk("%s    %s-STREAM %s-BIT ECC error from %s\n",
+                       err_print_prefix,
+                       streamname[stream], bitsname[bits], sourcename[source]);
+
+        printk("%s    Address: 0x%016lx\n"
+                 "    Syndrome[upper.lower]: %02lx.%02lx\n", 
+               err_print_prefix,
+               c_addr,
+               c2_syn, c1_syn);
+
+        if (source == EV6__C_STAT__SOURCE_MEMORY ||
+            source == EV6__C_STAT__SOURCE_BCACHE) 
+                printk("%s    Block status: %s%s%s%s\n",
+                       err_print_prefix,
+                       (c_sts & EV6__C_STS__SHARED) ? "SHARED " : "",
+                       (c_sts & EV6__C_STS__DIRTY)  ? "DIRTY "  : "",
+                       (c_sts & EV6__C_STS__VALID)  ? "VALID "  : "",
+                       (c_sts & EV6__C_STS__PARITY) ? "PARITY " : "");
+                
+        return status;
+}
+
+void
+ev6_register_error_handlers(void)
+{
+        /* None right now. */
+}
+
+int
+ev6_process_logout_frame(struct el_common *mchk_header, int print)
+{
+        struct el_common_EV6_mcheck *ev6mchk = 
+                (struct el_common_EV6_mcheck *)mchk_header;
+        int status = MCHK_DISPOSITION_UNKNOWN_ERROR;
+
+        status |= ev6_parse_ibox(ev6mchk->I_STAT, print);
+        status |= ev6_parse_mbox(ev6mchk->MM_STAT, ev6mchk->DC_STAT, 
+                                 ev6mchk->C_STAT, print);
+        status |= ev6_parse_cbox(ev6mchk->C_ADDR, ev6mchk->DC1_SYNDROME,
+                                 ev6mchk->DC0_SYNDROME, ev6mchk->C_STAT,
+                                 ev6mchk->C_STS, print);
+
+        if (!print)
+                return status;
+
+        if (status != MCHK_DISPOSITION_DISMISS) {
+                char *saved_err_prefix = err_print_prefix;
+
+                /*
+                 * Dump some additional information from the frame
+                 */
+                printk("%s    EXC_ADDR: 0x%016lx   IER_CM: 0x%016lx"
+                            "   ISUM: 0x%016lx\n"
+                         "    PAL_BASE: 0x%016lx   I_CTL:  0x%016lx"
+                            "   PCTX: 0x%016lx\n",
+                       err_print_prefix,
+                       ev6mchk->EXC_ADDR, ev6mchk->IER_CM, ev6mchk->ISUM,
+                       ev6mchk->PAL_BASE, ev6mchk->I_CTL, ev6mchk->PCTX);
+
+                if (status == MCHK_DISPOSITION_UNKNOWN_ERROR) {
+                        printk("%s    UNKNOWN error, frame follows:\n",
+                               err_print_prefix);
+                } else {
+                        /* had decode -- downgrade print level for frame */
+                        err_print_prefix = KERN_NOTICE;
+                }
+
+                mchk_dump_logout_frame(mchk_header);
+
+                err_print_prefix = saved_err_prefix;
+        }
+
+        return status;
+}
+
+void
+ev6_machine_check(u64 vector, u64 la_ptr, struct pt_regs *regs)
+{
+        struct el_common *mchk_header = (struct el_common *)la_ptr;
+
+        /*
+         * Sync the processor
+         */
+        mb();
+        draina();
+
+        /*
+         * Parse the logout frame without printing first. If the only error(s)
+         * found are have a disposition of "dismiss", then just dismiss them
+         * and don't print any message
+         */
+        if (ev6_process_logout_frame(mchk_header, 0) != 
+            MCHK_DISPOSITION_DISMISS) {
+                char *saved_err_prefix = err_print_prefix;
+                err_print_prefix = KERN_CRIT;
+
+                /*
+                 * Either a nondismissable error was detected or no
+                 * recognized error was detected  in the logout frame 
+                 * -- report the error in either case
+                 */
+                printk("%s*CPU %s Error (Vector 0x%x) reported on CPU %d:\n", 
+                       err_print_prefix,
+                       (vector == SCB_Q_PROCERR)?"Correctable":"Uncorrectable",
+                       (unsigned int)vector, (int)smp_processor_id());
+                
+                ev6_process_logout_frame(mchk_header, 1);
+                dik_show_regs(regs, NULL);
+
+                err_print_prefix = saved_err_prefix;
+        }
+
+        /* 
+         * Release the logout frame 
+         */
+        wrmces(0x7);
+        mb();
+}
+