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-rwxr-xr-xconfigure77
-rw-r--r--hw/s390x/css.c10
-rw-r--r--hw/s390x/css.h2
-rw-r--r--hw/s390x/virtio-ccw.c102
-rw-r--r--hw/s390x/virtio-ccw.h4
-rw-r--r--target-s390x/ioinst.h2
-rw-r--r--target-s390x/kvm.c8
-rw-r--r--trace-events1
8 files changed, 174 insertions, 32 deletions
diff --git a/configure b/configure
index 6ccadc3..1212d2d 100755
--- a/configure
+++ b/configure
@@ -14,13 +14,14 @@ fi
TMPC="${TMPDIR1}/qemu-conf-${RANDOM}-$$-${RANDOM}.c"
TMPB="qemu-conf-${RANDOM}-$$-${RANDOM}"
TMPO="${TMPDIR1}/${TMPB}.o"
+TMPCXX="${TMPDIR1}/${TMPB}.cxx"
TMPL="${TMPDIR1}/${TMPB}.lo"
TMPA="${TMPDIR1}/lib${TMPB}.la"
TMPE="${TMPDIR1}/qemu-conf-${RANDOM}-$$-${RANDOM}.exe"
# NB: do not call "exit" in the trap handler; this is buggy with some shells;
# see <1285349658-3122-1-git-send-email-loic.minier@linaro.org>
-trap "rm -f $TMPC $TMPO $TMPE" EXIT INT QUIT TERM
+trap "rm -f $TMPC $TMPO $TMPCXX $TMPE" EXIT INT QUIT TERM
rm -f config.log
# Print a helpful header at the top of config.log
@@ -54,10 +55,13 @@ error_exit() {
exit 1
}
-do_cc() {
- # Run the compiler, capturing its output to the log.
- echo $cc "$@" >> config.log
- $cc "$@" >> config.log 2>&1 || return $?
+do_compiler() {
+ # Run the compiler, capturing its output to the log. First argument
+ # is compiler binary to execute.
+ local compiler="$1"
+ shift
+ echo $compiler "$@" >> config.log
+ $compiler "$@" >> config.log 2>&1 || return $?
# Test passed. If this is an --enable-werror build, rerun
# the test with -Werror and bail out if it fails. This
# makes warning-generating-errors in configure test code
@@ -71,14 +75,39 @@ do_cc() {
return 0
;;
esac
- echo $cc -Werror "$@" >> config.log
- $cc -Werror "$@" >> config.log 2>&1 && return $?
+ echo $compiler -Werror "$@" >> config.log
+ $compiler -Werror "$@" >> config.log 2>&1 && return $?
error_exit "configure test passed without -Werror but failed with -Werror." \
"This is probably a bug in the configure script. The failing command" \
"will be at the bottom of config.log." \
"You can run configure with --disable-werror to bypass this check."
}
+do_cc() {
+ do_compiler "$cc" "$@"
+}
+
+do_cxx() {
+ do_compiler "$cxx" "$@"
+}
+
+update_cxxflags() {
+ # Set QEMU_CXXFLAGS from QEMU_CFLAGS by filtering out those
+ # options which some versions of GCC's C++ compiler complain about
+ # because they only make sense for C programs.
+ QEMU_CXXFLAGS=
+ for arg in $QEMU_CFLAGS; do
+ case $arg in
+ -Wstrict-prototypes|-Wmissing-prototypes|-Wnested-externs|\
+ -Wold-style-declaration|-Wold-style-definition|-Wredundant-decls)
+ ;;
+ *)
+ QEMU_CXXFLAGS=${QEMU_CXXFLAGS:+$QEMU_CXXFLAGS }$arg
+ ;;
+ esac
+ done
+}
+
compile_object() {
do_cc $QEMU_CFLAGS -c -o $TMPO $TMPC
}
@@ -371,7 +400,7 @@ sdl_config="${SDL_CONFIG-${cross_prefix}sdl-config}"
ARFLAGS="${ARFLAGS-rv}"
# default flags for all hosts
-QEMU_CFLAGS="-fno-strict-aliasing $QEMU_CFLAGS"
+QEMU_CFLAGS="-fno-strict-aliasing -fno-common $QEMU_CFLAGS"
QEMU_CFLAGS="-Wall -Wundef -Wwrite-strings -Wmissing-prototypes $QEMU_CFLAGS"
QEMU_CFLAGS="-Wstrict-prototypes -Wredundant-decls $QEMU_CFLAGS"
QEMU_CFLAGS="-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE $QEMU_CFLAGS"
@@ -1335,6 +1364,19 @@ if test "$ARCH" = "unknown"; then
fi
fi
+# Consult white-list to determine whether to enable werror
+# by default. Only enable by default for git builds
+z_version=`cut -f3 -d. $source_path/VERSION`
+
+if test -z "$werror" ; then
+ if test -d "$source_path/.git" -a \
+ "$linux" = "yes" ; then
+ werror="yes"
+ else
+ werror="no"
+ fi
+fi
+
# check that the C compiler works.
cat > $TMPC <<EOF
int main(void) { return 0; }
@@ -1355,14 +1397,16 @@ EOF
compile_object
- cat > $TMPC <<EOF
+ cat > $TMPCXX <<EOF
extern "C" {
int c_function(void);
}
int c_function(void) { return 42; }
EOF
- if (cc=$cxx do_cc $QEMU_CFLAGS -o $TMPE $TMPC $TMPO $LDFLAGS); then
+ update_cxxflags
+
+ if do_cxx $QEMU_CXXFLAGS -o $TMPE $TMPCXX $TMPO $LDFLAGS; then
# C++ compiler $cxx works ok with C compiler $cc
:
else
@@ -1375,19 +1419,6 @@ else
cxx=
fi
-# Consult white-list to determine whether to enable werror
-# by default. Only enable by default for git builds
-z_version=`cut -f3 -d. $source_path/VERSION`
-
-if test -z "$werror" ; then
- if test -d "$source_path/.git" -a \
- "$linux" = "yes" ; then
- werror="yes"
- else
- werror="no"
- fi
-fi
-
gcc_flags="-Wold-style-declaration -Wold-style-definition -Wtype-limits"
gcc_flags="-Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers $gcc_flags"
gcc_flags="-Wmissing-include-dirs -Wempty-body -Wnested-externs $gcc_flags"
diff --git a/hw/s390x/css.c b/hw/s390x/css.c
index 75b04b4..7074d2b 100644
--- a/hw/s390x/css.c
+++ b/hw/s390x/css.c
@@ -116,6 +116,15 @@ void css_conditional_io_interrupt(SubchDev *sch)
}
}
+void css_adapter_interrupt(uint8_t isc)
+{
+ S390CPU *cpu = s390_cpu_addr2state(0);
+ uint32_t io_int_word = (isc << 27) | IO_INT_WORD_AI;
+
+ trace_css_adapter_interrupt(isc);
+ s390_io_interrupt(cpu, 0, 0, 0, io_int_word);
+}
+
static void sch_handle_clear_func(SubchDev *sch)
{
PMCW *p = &sch->curr_status.pmcw;
@@ -1259,6 +1268,7 @@ void css_reset_sch(SubchDev *sch)
sch->channel_prog = 0x0;
sch->last_cmd_valid = false;
sch->orb = NULL;
+ sch->thinint_active = false;
}
void css_reset(void)
diff --git a/hw/s390x/css.h b/hw/s390x/css.h
index b536ab5..e9b4405 100644
--- a/hw/s390x/css.h
+++ b/hw/s390x/css.h
@@ -77,6 +77,7 @@ struct SubchDev {
CCW1 last_cmd;
bool last_cmd_valid;
ORB *orb;
+ bool thinint_active;
/* transport-provided data: */
int (*ccw_cb) (SubchDev *, CCW1);
SenseId id;
@@ -97,4 +98,5 @@ void css_queue_crw(uint8_t rsc, uint8_t erc, int chain, uint16_t rsid);
void css_generate_sch_crws(uint8_t cssid, uint8_t ssid, uint16_t schid,
int hotplugged, int add);
void css_generate_chp_crws(uint8_t cssid, uint8_t chpid);
+void css_adapter_interrupt(uint8_t isc);
#endif
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index f6e0e3e..a01801e 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -1,7 +1,7 @@
/*
* virtio ccw target implementation
*
- * Copyright 2012 IBM Corp.
+ * Copyright 2012,2014 IBM Corp.
* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
@@ -188,6 +188,13 @@ typedef struct VirtioFeatDesc {
uint8_t index;
} QEMU_PACKED VirtioFeatDesc;
+typedef struct VirtioThinintInfo {
+ hwaddr summary_indicator;
+ hwaddr device_indicator;
+ uint64_t ind_bit;
+ uint8_t isc;
+} QEMU_PACKED VirtioThinintInfo;
+
/* Specify where the virtqueues for the subchannel are in guest memory. */
static int virtio_ccw_set_vqs(SubchDev *sch, uint64_t addr, uint32_t align,
uint16_t index, uint16_t num)
@@ -237,6 +244,7 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
bool check_len;
int len;
hwaddr hw_len;
+ VirtioThinintInfo *thinint;
if (!dev) {
return -EINVAL;
@@ -428,6 +436,11 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
ret = -EINVAL;
break;
}
+ if (sch->thinint_active) {
+ /* Trigger a command reject. */
+ ret = -ENOSYS;
+ break;
+ }
if (!ccw.cda) {
ret = -EFAULT;
} else {
@@ -480,6 +493,42 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
ret = 0;
}
break;
+ case CCW_CMD_SET_IND_ADAPTER:
+ if (check_len) {
+ if (ccw.count != sizeof(*thinint)) {
+ ret = -EINVAL;
+ break;
+ }
+ } else if (ccw.count < sizeof(*thinint)) {
+ /* Can't execute command. */
+ ret = -EINVAL;
+ break;
+ }
+ len = sizeof(*thinint);
+ hw_len = len;
+ if (!ccw.cda) {
+ ret = -EFAULT;
+ } else if (dev->indicators && !sch->thinint_active) {
+ /* Trigger a command reject. */
+ ret = -ENOSYS;
+ } else {
+ thinint = cpu_physical_memory_map(ccw.cda, &hw_len, 0);
+ if (!thinint) {
+ ret = -EFAULT;
+ } else {
+ len = hw_len;
+ dev->summary_indicator = thinint->summary_indicator;
+ dev->indicators = thinint->device_indicator;
+ dev->thinint_isc = thinint->isc;
+ dev->ind_bit = thinint->ind_bit;
+ cpu_physical_memory_unmap(thinint, hw_len, 0, hw_len);
+ sch->thinint_active = ((dev->indicators != 0) &&
+ (dev->summary_indicator != 0));
+ sch->curr_status.scsw.count = ccw.count - len;
+ ret = 0;
+ }
+ }
+ break;
default:
ret = -ENOSYS;
break;
@@ -511,6 +560,7 @@ static int virtio_ccw_device_init(VirtioCcwDevice *dev, VirtIODevice *vdev)
sch->channel_prog = 0x0;
sch->last_cmd_valid = false;
sch->orb = NULL;
+ sch->thinint_active = false;
/*
* Use a device number if provided. Otherwise, fall back to subchannel
* number.
@@ -858,6 +908,28 @@ static inline VirtioCcwDevice *to_virtio_ccw_dev_fast(DeviceState *d)
return container_of(d, VirtioCcwDevice, parent_obj);
}
+static uint8_t virtio_set_ind_atomic(SubchDev *sch, uint64_t ind_loc,
+ uint8_t to_be_set)
+{
+ uint8_t ind_old, ind_new;
+ hwaddr len = 1;
+ uint8_t *ind_addr;
+
+ ind_addr = cpu_physical_memory_map(ind_loc, &len, 1);
+ if (!ind_addr) {
+ error_report("%s(%x.%x.%04x): unable to access indicator",
+ __func__, sch->cssid, sch->ssid, sch->schid);
+ return -1;
+ }
+ do {
+ ind_old = *ind_addr;
+ ind_new = ind_old | to_be_set;
+ } while (atomic_cmpxchg(ind_addr, ind_old, ind_new) != ind_old);
+ cpu_physical_memory_unmap(ind_addr, len, 1, len);
+
+ return ind_old;
+}
+
static void virtio_ccw_notify(DeviceState *d, uint16_t vector)
{
VirtioCcwDevice *dev = to_virtio_ccw_dev_fast(d);
@@ -872,9 +944,26 @@ static void virtio_ccw_notify(DeviceState *d, uint16_t vector)
if (!dev->indicators) {
return;
}
- indicators = ldq_phys(&address_space_memory, dev->indicators);
- indicators |= 1ULL << vector;
- stq_phys(&address_space_memory, dev->indicators, indicators);
+ if (sch->thinint_active) {
+ /*
+ * In the adapter interrupt case, indicators points to a
+ * memory area that may be (way) larger than 64 bit and
+ * ind_bit indicates the start of the indicators in a big
+ * endian notation.
+ */
+ virtio_set_ind_atomic(sch, dev->indicators +
+ (dev->ind_bit + vector) / 8,
+ 0x80 >> ((dev->ind_bit + vector) % 8));
+ if (!virtio_set_ind_atomic(sch, dev->summary_indicator,
+ 0x01)) {
+ css_adapter_interrupt(dev->thinint_isc);
+ }
+ } else {
+ indicators = ldq_phys(&address_space_memory, dev->indicators);
+ indicators |= 1ULL << vector;
+ stq_phys(&address_space_memory, dev->indicators, indicators);
+ css_conditional_io_interrupt(sch);
+ }
} else {
if (!dev->indicators2) {
return;
@@ -883,10 +972,8 @@ static void virtio_ccw_notify(DeviceState *d, uint16_t vector)
indicators = ldq_phys(&address_space_memory, dev->indicators2);
indicators |= 1ULL << vector;
stq_phys(&address_space_memory, dev->indicators2, indicators);
+ css_conditional_io_interrupt(sch);
}
-
- css_conditional_io_interrupt(sch);
-
}
static unsigned virtio_ccw_get_features(DeviceState *d)
@@ -907,6 +994,7 @@ static void virtio_ccw_reset(DeviceState *d)
css_reset_sch(dev->sch);
dev->indicators = 0;
dev->indicators2 = 0;
+ dev->summary_indicator = 0;
}
static void virtio_ccw_vmstate_change(DeviceState *d, bool running)
diff --git a/hw/s390x/virtio-ccw.h b/hw/s390x/virtio-ccw.h
index 00932c7..4393e44 100644
--- a/hw/s390x/virtio-ccw.h
+++ b/hw/s390x/virtio-ccw.h
@@ -38,6 +38,7 @@
#define CCW_CMD_SET_IND 0x43
#define CCW_CMD_SET_CONF_IND 0x53
#define CCW_CMD_READ_VQ_CONF 0x32
+#define CCW_CMD_SET_IND_ADAPTER 0x73
#define TYPE_VIRTIO_CCW_DEVICE "virtio-ccw-device"
#define VIRTIO_CCW_DEVICE(obj) \
@@ -83,9 +84,12 @@ struct VirtioCcwDevice {
bool ioeventfd_started;
bool ioeventfd_disabled;
uint32_t flags;
+ uint8_t thinint_isc;
/* Guest provided values: */
hwaddr indicators;
hwaddr indicators2;
+ hwaddr summary_indicator;
+ uint64_t ind_bit;
};
/* virtual css bus type */
diff --git a/target-s390x/ioinst.h b/target-s390x/ioinst.h
index 613da49..5bbc67d 100644
--- a/target-s390x/ioinst.h
+++ b/target-s390x/ioinst.h
@@ -212,6 +212,8 @@ typedef struct IOIntCode {
#define IO_INT_WORD_ISC(_int_word) ((_int_word & 0x38000000) >> 24)
#define ISC_TO_ISC_BITS(_isc) ((0x80 >> _isc) << 24)
+#define IO_INT_WORD_AI 0x80000000
+
int ioinst_disassemble_sch_ident(uint32_t value, int *m, int *cssid, int *ssid,
int *schid);
void ioinst_handle_xsch(S390CPU *cpu, uint64_t reg1);
diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c
index 11feda9..56b9af7 100644
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -891,8 +891,12 @@ void kvm_s390_io_interrupt(S390CPU *cpu, uint16_t subchannel_id,
{
uint32_t type;
- type = ((subchannel_id & 0xff00) << 24) |
- ((subchannel_id & 0x00060) << 22) | (subchannel_nr << 16);
+ if (io_int_word & IO_INT_WORD_AI) {
+ type = KVM_S390_INT_IO(1, 0, 0, 0);
+ } else {
+ type = ((subchannel_id & 0xff00) << 24) |
+ ((subchannel_id & 0x00060) << 22) | (subchannel_nr << 16);
+ }
kvm_s390_interrupt_internal(cpu, type,
((uint32_t)subchannel_id << 16) | subchannel_nr,
((uint64_t)io_int_parm << 32) | io_int_word, 1);
diff --git a/trace-events b/trace-events
index 777f703..8d6aa4a 100644
--- a/trace-events
+++ b/trace-events
@@ -1158,6 +1158,7 @@ css_chpid_add(uint8_t cssid, uint8_t chpid, uint8_t type) "CSS: add chpid %x.%02
css_new_image(uint8_t cssid, const char *default_cssid) "CSS: add css image %02x %s"
css_assign_subch(const char *do_assign, uint8_t cssid, uint8_t ssid, uint16_t schid, uint16_t devno) "CSS: %s %x.%x.%04x (devno %04x)"
css_io_interrupt(int cssid, int ssid, int schid, uint32_t intparm, uint8_t isc, const char *conditional) "CSS: I/O interrupt on sch %x.%x.%04x (intparm %08x, isc %x) %s"
+css_adapter_interrupt(uint8_t isc) "CSS: adapter I/O interrupt (isc %x)"
# hw/s390x/virtio-ccw.c
virtio_ccw_interpret_ccw(int cssid, int ssid, int schid, int cmd_code) "VIRTIO-CCW: %x.%x.%04x: interpret command %x"
generated by cgit v1.1 at 2024-12-25 13:34:52 +0000