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[src/trunk]: src/sys/arch/powerpc Detangle some of the PowerPC CPU configurat...
details: https://anonhg.NetBSD.org/src/rev/9d46ed0c8283
branches: trunk
changeset: 455590:9d46ed0c8283
user: thorpej <thorpej%NetBSD.org@localhost>
date: Sun Apr 07 05:25:55 2019 +0000
description:
Detangle some of the PowerPC CPU configuration spaghetti.
diffstat:
sys/arch/powerpc/booke/booke_machdep.c | 10 +++-
sys/arch/powerpc/booke/copyin.c | 55 ++++++++++++++++++++++----
sys/arch/powerpc/booke/copyout.c | 67 ++++++++++++++++++++++++++++++--
sys/arch/powerpc/ibm4xx/trap.c | 33 +++++++++++++++-
sys/arch/powerpc/include/booke/cpuvar.h | 4 +-
sys/arch/powerpc/include/types.h | 4 +-
sys/arch/powerpc/powerpc/trap.c | 6 +-
7 files changed, 153 insertions(+), 26 deletions(-)
diffs (truncated from 371 to 300 lines):
diff -r e12c0fe46d0e -r 9d46ed0c8283 sys/arch/powerpc/booke/booke_machdep.c
--- a/sys/arch/powerpc/booke/booke_machdep.c Sun Apr 07 04:11:56 2019 +0000
+++ b/sys/arch/powerpc/booke/booke_machdep.c Sun Apr 07 05:25:55 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: booke_machdep.c,v 1.25 2016/12/06 07:34:22 rin Exp $ */
+/* $NetBSD: booke_machdep.c,v 1.26 2019/04/07 05:25:55 thorpej Exp $ */
/*-
* Copyright (c) 2010, 2011 The NetBSD Foundation, Inc.
* All rights reserved.
@@ -38,7 +38,7 @@
#define _POWERPC_BUS_DMA_PRIVATE
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: booke_machdep.c,v 1.25 2016/12/06 07:34:22 rin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: booke_machdep.c,v 1.26 2019/04/07 05:25:55 thorpej Exp $");
#include "opt_modular.h"
@@ -566,8 +566,12 @@
void
booke_sstep(struct trapframe *tf)
{
+ uint32_t insn;
+
KASSERT(tf->tf_srr1 & PSL_DE);
- const uint32_t insn = ufetch_32((const void *)tf->tf_srr0);
+ if (ufetch_32((const void *)tf->tf_srr0, &insn) != 0)
+ return;
+
register_t dbcr0 = DBCR0_IAC1 | DBCR0_IDM;
register_t dbcr1 = DBCR1_IAC1US_USER | DBCR1_IAC1ER_DS1;
if ((insn >> 28) == 4) {
diff -r e12c0fe46d0e -r 9d46ed0c8283 sys/arch/powerpc/booke/copyin.c
--- a/sys/arch/powerpc/booke/copyin.c Sun Apr 07 04:11:56 2019 +0000
+++ b/sys/arch/powerpc/booke/copyin.c Sun Apr 07 05:25:55 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: copyin.c,v 1.6 2014/07/24 23:27:25 joerg Exp $ */
+/* $NetBSD: copyin.c,v 1.7 2019/04/07 05:25:55 thorpej Exp $ */
/*-
* Copyright (c) 2010, 2011 The NetBSD Foundation, Inc.
@@ -36,10 +36,13 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: copyin.c,v 1.6 2014/07/24 23:27:25 joerg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: copyin.c,v 1.7 2019/04/07 05:25:55 thorpej Exp $");
+
+#define __UFETCHSTORE_PRIVATE
#include <sys/param.h>
#include <sys/lwp.h>
+#include <sys/systm.h>
#include <powerpc/pcb.h>
@@ -60,7 +63,6 @@
return data;
}
-#if 0
static inline uint16_t
copyin_halfword(const uint16_t * const usaddr16, register_t ds_msr)
{
@@ -75,7 +77,6 @@
: [ds_msr] "r" (ds_msr), [usaddr16] "b" (usaddr16));
return data;
}
-#endif
static inline uint32_t
copyin_word(const uint32_t * const usaddr32, register_t ds_msr)
@@ -199,22 +200,58 @@
}
}
-uint32_t
-ufetch_32(const void *vusaddr)
+int
+_ufetch_8(const uint8_t *vusaddr, uint8_t *valp)
+{
+ struct pcb * const pcb = lwp_getpcb(curlwp);
+ struct faultbuf env;
+
+ if (setfault(&env) != 0) {
+ pcb->pcb_onfault = NULL;
+ return EFAULT;
+ }
+
+ *valp = copyin_byte(vusaddr, mfmsr() | PSL_DS);
+
+ pcb->pcb_onfault = NULL;
+
+ return 0;
+}
+
+int
+_ufetch_16(const uint16_t *vusaddr, uint16_t *valp)
{
struct pcb * const pcb = lwp_getpcb(curlwp);
struct faultbuf env;
if (setfault(&env) != 0) {
pcb->pcb_onfault = NULL;
- return -1;
+ return EFAULT;
}
- uint32_t rv = copyin_word(vusaddr, mfmsr() | PSL_DS);
+ *valp = copyin_halfword(vusaddr, mfmsr() | PSL_DS);
pcb->pcb_onfault = NULL;
- return rv;
+ return 0;
+}
+
+int
+_ufetch_32(const uint32_t *vusaddr, uint32_t *valp)
+{
+ struct pcb * const pcb = lwp_getpcb(curlwp);
+ struct faultbuf env;
+
+ if (setfault(&env) != 0) {
+ pcb->pcb_onfault = NULL;
+ return EFAULT;
+ }
+
+ *valp = copyin_word(vusaddr, mfmsr() | PSL_DS);
+
+ pcb->pcb_onfault = NULL;
+
+ return 0;
}
int
diff -r e12c0fe46d0e -r 9d46ed0c8283 sys/arch/powerpc/booke/copyout.c
--- a/sys/arch/powerpc/booke/copyout.c Sun Apr 07 04:11:56 2019 +0000
+++ b/sys/arch/powerpc/booke/copyout.c Sun Apr 07 05:25:55 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: copyout.c,v 1.4 2014/07/24 23:29:02 joerg Exp $ */
+/* $NetBSD: copyout.c,v 1.5 2019/04/07 05:25:55 thorpej Exp $ */
/*-
* Copyright (c) 2010, 2011 The NetBSD Foundation, Inc.
@@ -36,10 +36,13 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: copyout.c,v 1.4 2014/07/24 23:29:02 joerg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: copyout.c,v 1.5 2019/04/07 05:25:55 thorpej Exp $");
+
+#define __UFETCHSTORE_PRIVATE
#include <sys/param.h>
#include <sys/lwp.h>
+#include <sys/systm.h>
#include <powerpc/pcb.h>
@@ -58,20 +61,18 @@
: [ds_msr] "r" (ds_msr), [data] "r" (data), [udaddr] "b" (udaddr));
}
-#if 0
static inline void
-copyout_uint16(uint8_t *udaddr, uint8_t data, register_t ds_msr)
+copyout_uint16(uint16_t *udaddr, uint8_t data, register_t ds_msr)
{
register_t msr;
__asm volatile(
"mfmsr %[msr]" /* Save MSR */
"\n\t" "mtmsr %[ds_msr]; sync; isync" /* DS on */
- "\n\t" "stb %[data],0(%[udaddr])" /* store user byte */
+ "\n\t" "sth %[data],0(%[udaddr])" /* store user half */
"\n\t" "mtmsr %[msr]; sync; isync" /* DS off */
: [msr] "=&r" (msr)
: [ds_msr] "r" (ds_msr), [data] "r" (data), [udaddr] "b" (udaddr));
}
-#endif
static inline void
copyout_uint32(uint32_t * const udaddr, uint32_t data, register_t ds_msr)
@@ -298,6 +299,60 @@
}
int
+_ustore_8(uint8_t *vusaddr, uint8_t val)
+{
+ struct pcb * const pcb = lwp_getpcb(curlwp);
+ struct faultbuf env;
+
+ if (setfault(&env) != 0) {
+ pcb->pcb_onfault = NULL;
+ return EFAULT;
+ }
+
+ copyout_uint8(vusaddr, val, mfmsr() | PSL_DS);
+
+ pcb->pcb_onfault = NULL;
+
+ return 0;
+}
+
+int
+_ustore_16(uint16_t *vusaddr, uint16_t val)
+{
+ struct pcb * const pcb = lwp_getpcb(curlwp);
+ struct faultbuf env;
+
+ if (setfault(&env) != 0) {
+ pcb->pcb_onfault = NULL;
+ return EFAULT;
+ }
+
+ copyout_uint16(vusaddr, val, mfmsr() | PSL_DS);
+
+ pcb->pcb_onfault = NULL;
+
+ return 0;
+}
+
+int
+_ustore_32(uint32_t *vusaddr, uint32_t val)
+{
+ struct pcb * const pcb = lwp_getpcb(curlwp);
+ struct faultbuf env;
+
+ if (setfault(&env) != 0) {
+ pcb->pcb_onfault = NULL;
+ return EFAULT;
+ }
+
+ copyout_uint32(vusaddr, val, mfmsr() | PSL_DS);
+
+ pcb->pcb_onfault = NULL;
+
+ return 0;
+}
+
+int
copyout(const void *vksaddr, void *vudaddr, size_t len)
{
struct pcb * const pcb = lwp_getpcb(curlwp);
diff -r e12c0fe46d0e -r 9d46ed0c8283 sys/arch/powerpc/ibm4xx/trap.c
--- a/sys/arch/powerpc/ibm4xx/trap.c Sun Apr 07 04:11:56 2019 +0000
+++ b/sys/arch/powerpc/ibm4xx/trap.c Sun Apr 07 05:25:55 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: trap.c,v 1.69 2016/12/26 21:54:00 rin Exp $ */
+/* $NetBSD: trap.c,v 1.70 2019/04/07 05:25:55 thorpej Exp $ */
/*
* Copyright 2001 Wasabi Systems, Inc.
@@ -67,12 +67,14 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.69 2016/12/26 21:54:00 rin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.70 2019/04/07 05:25:55 thorpej Exp $");
#include "opt_altivec.h"
#include "opt_ddb.h"
#include "opt_kgdb.h"
+#define __UFETCHSTORE_PRIVATE
+
#include <sys/param.h>
#include <sys/proc.h>
#include <sys/reboot.h>
@@ -677,3 +679,30 @@
return -1;
}
+
+/*
+ * XXX Extremely lame implementations of _ufetch_* / _ustore_*. IBM 4xx
+ * experts should make versions that are good.
+ */
+
+#define UFETCH(sz) \
+int \
+_ufetch_ ## sz(const uint ## sz ## _t *uaddr, uint ## sz ## _t *valp) \
+{ \
+ return copyin(uaddr, valp, sizeof(*valp)); \
+}
+
+UFETCH(8)
+UFETCH(16)
+UFETCH(32)
+
+#define USTORE(sz) \
+int \
+_ustore_ ## sz(uint ## sz ## _t *uaddr, uint ## sz ## _t val) \
+{ \
+ return copyout(&val, uaddr, sizeof(val)); \
+}
+
+USTORE(8)
+USTORE(16)
+USTORE(32)
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