[src/trunk]: src/sys/arch/macppc gather per-CPU EEPROM contents if we have them

[macallan <macallan%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/c3e0094c8736
branches:  trunk
changeset: 321451:c3e0094c8736
user:      macallan <macallan%NetBSD.org@localhost>
date:      Fri Mar 16 22:08:53 2018 +0000

description:
gather per-CPU EEPROM contents if we have them

diffstat:

 sys/arch/macppc/dev/uni-n.c   |  45 ++++++++++++++++++++++++++++++++++++++++--
 sys/arch/macppc/include/cpu.h |   3 +-
 2 files changed, 44 insertions(+), 4 deletions(-)

diffs (108 lines):

diff -r e2199aab44cb -r c3e0094c8736 sys/arch/macppc/dev/uni-n.c
--- a/sys/arch/macppc/dev/uni-n.c       Fri Mar 16 18:49:18 2018 +0000
+++ b/sys/arch/macppc/dev/uni-n.c       Fri Mar 16 22:08:53 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: uni-n.c,v 1.8 2018/03/01 13:55:25 macallan Exp $       */
+/*     $NetBSD: uni-n.c,v 1.9 2018/03/16 22:08:53 macallan Exp $       */
 
 /*-
  * Copyright (C) 2005 Michael Lorenz.
@@ -31,7 +31,7 @@
  */
  
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: uni-n.c,v 1.8 2018/03/01 13:55:25 macallan Exp $");
+__KERNEL_RCSID(0, "$NetBSD: uni-n.c,v 1.9 2018/03/16 22:08:53 macallan Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -43,6 +43,8 @@
 
 #include <machine/autoconf.h>
 
+#include "fcu.h"
+
 static void uni_n_attach(device_t, device_t, void *);
 static int uni_n_match(device_t, cfdata_t, void *);
 static int uni_n_print(void *, const char *);
@@ -56,6 +58,11 @@
 CFATTACH_DECL_NEW(uni_n, sizeof(struct uni_n_softc),
     uni_n_match, uni_n_attach, NULL, NULL);
 
+#if NFCU > 0
+/* storage for CPUID SEEPROM contents found on some G5 */
+static uint8_t eeprom[2][160];
+#endif
+
 int
 uni_n_match(device_t parent, cfdata_t cf, void *aux)
 {
@@ -85,6 +92,9 @@
        struct confargs *our_ca = aux;
        struct confargs ca;
        int node, child, namelen;
+#if NFCU > 0
+       int cpuid;
+#endif
        u_int reg[20];
        int intr[6];
        char name[32];
@@ -92,7 +102,25 @@
        sc->sc_dev = self;
        node = our_ca->ca_node;
        sc->sc_node = node;
-       printf(" address 0x%08x\n",our_ca->ca_reg[0]);
+       printf(" address 0x%08x\n",
+           our_ca->ca_reg[our_ca->ca_nreg > 8 ? 1 : 0]);
+
+#if NFCU > 0
+       /*
+        * zero out eeprom blocks, then see if we have valid data
+        * doing this here because the EEPROMs are dangling from out i2c bus
+        * but we can get all the data just from looking at the properties
+        */
+       memset(eeprom, 0, sizeof(eeprom));
+       cpuid = OF_finddevice("/u3/i2c/cpuid@a0");
+       OF_getprop(cpuid, "cpuid", eeprom[0], sizeof(eeprom[0]));
+       if (eeprom[0][1] != 0)
+               aprint_normal_dev(self, "found EEPROM data for CPU 0\n");
+       cpuid = OF_finddevice("/u3/i2c/cpuid@a2");
+       OF_getprop(cpuid, "cpuid", eeprom[1], sizeof(eeprom[1]));
+       if (eeprom[1][1] != 0)
+               aprint_normal_dev(self, "found EEPROM data for CPU 1\n");
+#endif
 
        memset(&sc->sc_memt, 0, sizeof(struct powerpc_bus_space));
        sc->sc_memt.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE;
@@ -137,3 +165,14 @@
 
        return UNCONF;
 }
+
+#if NFCU > 0
+int
+get_cpuid(int cpu, uint8_t *buf)
+{
+       if ((cpu < 0) || (cpu > 1)) return -1;
+       if (eeprom[cpu][1] == 0) return 0;
+       memcpy(buf, eeprom[cpu], sizeof(eeprom[cpu]));
+       return sizeof(eeprom[cpu]);
+}
+#endif
diff -r e2199aab44cb -r c3e0094c8736 sys/arch/macppc/include/cpu.h
--- a/sys/arch/macppc/include/cpu.h     Fri Mar 16 18:49:18 2018 +0000
+++ b/sys/arch/macppc/include/cpu.h     Fri Mar 16 22:08:53 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cpu.h,v 1.19 2011/06/20 06:35:40 matt Exp $    */
+/*     $NetBSD: cpu.h,v 1.20 2018/03/16 22:08:53 macallan Exp $        */
 
 /*
  * Copyright (C) 1995-1997 Wolfgang Solfrank.
@@ -36,6 +36,7 @@
 #if defined(_KERNEL) && !defined(_MODULE)
 #define        CPU_MAXNUM      2
 extern char bootpath[];
+int get_cpuid(int, uint8_t *);
 #endif /* _KERNEL */
 
 #include <powerpc/cpu.h>