This adds mmio-exec property to workaround the migration bug.
When enabled the migration is blocked and will return an error.
Signed-off-by: KONRAD Frederic <frederic.konrad@adacore.com>
V1 -> V2:
* changed mmio-exec to x-mmio-exec
---
hw/ssi/xilinx_spips.c | 36 +++++++++++++++++++++++++++++++++---
1 file changed, 33 insertions(+), 3 deletions(-)
diff --git a/hw/ssi/xilinx_spips.c b/hw/ssi/xilinx_spips.c
index e833028..ef56d35 100644
--- a/hw/ssi/xilinx_spips.c
+++ b/hw/ssi/xilinx_spips.c
@@ -31,6 +31,8 @@
#include "hw/ssi/ssi.h"
#include "qemu/bitops.h"
#include "hw/ssi/xilinx_spips.h"
+#include "qapi/error.h"
+#include "migration/blocker.h"
#ifndef XILINX_SPIPS_ERR_DEBUG
#define XILINX_SPIPS_ERR_DEBUG 0
@@ -139,6 +141,8 @@ typedef struct {
uint8_t lqspi_buf[LQSPI_CACHE_SIZE];
hwaddr lqspi_cached_addr;
+ Error *migration_blocker;
+ bool mmio_execution_enabled;
} XilinxQSPIPS;
typedef struct XilinxSPIPSClass {
@@ -500,12 +504,13 @@ static void xilinx_qspips_invalidate_mmio_ptr(XilinxQSPIPS *q)
{
XilinxSPIPS *s = &q->parent_obj;
- if (q->lqspi_cached_addr != ~0ULL) {
+ if ((q->mmio_execution_enabled) && (q->lqspi_cached_addr != ~0ULL)) {
/* Invalidate the current mapped mmio */
memory_region_invalidate_mmio_ptr(&s->mmlqspi, q->lqspi_cached_addr,
LQSPI_CACHE_SIZE);
- q->lqspi_cached_addr = ~0ULL;
}
+
+ q->lqspi_cached_addr = ~0ULL;
}
static void xilinx_qspips_write(void *opaque, hwaddr addr,
@@ -601,8 +606,13 @@ static void *lqspi_request_mmio_ptr(void *opaque, hwaddr addr, unsigned *size,
unsigned *offset)
{
XilinxQSPIPS *q = opaque;
- hwaddr offset_within_the_region = addr & ~(LQSPI_CACHE_SIZE - 1);
+ hwaddr offset_within_the_region;
+ if (!q->mmio_execution_enabled) {
+ return NULL;
+ }
+
+ offset_within_the_region = addr & ~(LQSPI_CACHE_SIZE - 1);
lqspi_load_cache(opaque, offset_within_the_region);
*size = LQSPI_CACHE_SIZE;
*offset = offset_within_the_region;
@@ -693,6 +703,15 @@ static void xilinx_qspips_realize(DeviceState *dev, Error **errp)
sysbus_init_mmio(sbd, &s->mmlqspi);
q->lqspi_cached_addr = ~0ULL;
+
+ /* mmio_execution breaks migration better aborting than having strange
+ * bugs.
+ */
+ if (q->mmio_execution_enabled) {
+ error_setg(&q->migration_blocker,
+ "enabling mmio_execution breaks migration");
+ migrate_add_blocker(q->migration_blocker, &error_fatal);
+ }
}
static int xilinx_spips_post_load(void *opaque, int version_id)
@@ -716,6 +735,16 @@ static const VMStateDescription vmstate_xilinx_spips = {
}
};
+static Property xilinx_qspips_properties[] = {
+ /* We had to turn this off for 2.10 as it is not compatible with migration.
+ * It can be enabled but will prevent the device to be migrated.
+ * This will go aways when a fix will be released.
+ */
+ DEFINE_PROP_BOOL("x-mmio-exec", XilinxQSPIPS, mmio_execution_enabled,
+ false),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
static Property xilinx_spips_properties[] = {
DEFINE_PROP_UINT8("num-busses", XilinxSPIPS, num_busses, 1),
DEFINE_PROP_UINT8("num-ss-bits", XilinxSPIPS, num_cs, 4),
@@ -729,6 +758,7 @@ static void xilinx_qspips_class_init(ObjectClass *klass, void * data)
XilinxSPIPSClass *xsc = XILINX_SPIPS_CLASS(klass);
dc->realize = xilinx_qspips_realize;
+ dc->props = xilinx_qspips_properties;
xsc->reg_ops = &qspips_ops;
xsc->rx_fifo_size = RXFF_A_Q;
xsc->tx_fifo_size = TXFF_A_Q;
--
1.8.3.1
On Fri, Aug 11, 2017 at 09:54:12AM +0200, KONRAD Frederic wrote: > This adds mmio-exec property to workaround the migration bug. > When enabled the migration is blocked and will return an error. > > Signed-off-by: KONRAD Frederic <frederic.konrad@adacore.com> Thanks Fred! Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> > > V1 -> V2: > * changed mmio-exec to x-mmio-exec > --- > hw/ssi/xilinx_spips.c | 36 +++++++++++++++++++++++++++++++++--- > 1 file changed, 33 insertions(+), 3 deletions(-) > > diff --git a/hw/ssi/xilinx_spips.c b/hw/ssi/xilinx_spips.c > index e833028..ef56d35 100644 > --- a/hw/ssi/xilinx_spips.c > +++ b/hw/ssi/xilinx_spips.c > @@ -31,6 +31,8 @@ > #include "hw/ssi/ssi.h" > #include "qemu/bitops.h" > #include "hw/ssi/xilinx_spips.h" > +#include "qapi/error.h" > +#include "migration/blocker.h" > > #ifndef XILINX_SPIPS_ERR_DEBUG > #define XILINX_SPIPS_ERR_DEBUG 0 > @@ -139,6 +141,8 @@ typedef struct { > > uint8_t lqspi_buf[LQSPI_CACHE_SIZE]; > hwaddr lqspi_cached_addr; > + Error *migration_blocker; > + bool mmio_execution_enabled; > } XilinxQSPIPS; > > typedef struct XilinxSPIPSClass { > @@ -500,12 +504,13 @@ static void xilinx_qspips_invalidate_mmio_ptr(XilinxQSPIPS *q) > { > XilinxSPIPS *s = &q->parent_obj; > > - if (q->lqspi_cached_addr != ~0ULL) { > + if ((q->mmio_execution_enabled) && (q->lqspi_cached_addr != ~0ULL)) { > /* Invalidate the current mapped mmio */ > memory_region_invalidate_mmio_ptr(&s->mmlqspi, q->lqspi_cached_addr, > LQSPI_CACHE_SIZE); > - q->lqspi_cached_addr = ~0ULL; > } > + > + q->lqspi_cached_addr = ~0ULL; > } > > static void xilinx_qspips_write(void *opaque, hwaddr addr, > @@ -601,8 +606,13 @@ static void *lqspi_request_mmio_ptr(void *opaque, hwaddr addr, unsigned *size, > unsigned *offset) > { > XilinxQSPIPS *q = opaque; > - hwaddr offset_within_the_region = addr & ~(LQSPI_CACHE_SIZE - 1); > + hwaddr offset_within_the_region; > > + if (!q->mmio_execution_enabled) { > + return NULL; > + } > + > + offset_within_the_region = addr & ~(LQSPI_CACHE_SIZE - 1); > lqspi_load_cache(opaque, offset_within_the_region); > *size = LQSPI_CACHE_SIZE; > *offset = offset_within_the_region; > @@ -693,6 +703,15 @@ static void xilinx_qspips_realize(DeviceState *dev, Error **errp) > sysbus_init_mmio(sbd, &s->mmlqspi); > > q->lqspi_cached_addr = ~0ULL; > + > + /* mmio_execution breaks migration better aborting than having strange > + * bugs. > + */ > + if (q->mmio_execution_enabled) { > + error_setg(&q->migration_blocker, > + "enabling mmio_execution breaks migration"); > + migrate_add_blocker(q->migration_blocker, &error_fatal); > + } > } > > static int xilinx_spips_post_load(void *opaque, int version_id) > @@ -716,6 +735,16 @@ static const VMStateDescription vmstate_xilinx_spips = { > } > }; > > +static Property xilinx_qspips_properties[] = { > + /* We had to turn this off for 2.10 as it is not compatible with migration. > + * It can be enabled but will prevent the device to be migrated. > + * This will go aways when a fix will be released. > + */ > + DEFINE_PROP_BOOL("x-mmio-exec", XilinxQSPIPS, mmio_execution_enabled, > + false), > + DEFINE_PROP_END_OF_LIST(), > +}; > + > static Property xilinx_spips_properties[] = { > DEFINE_PROP_UINT8("num-busses", XilinxSPIPS, num_busses, 1), > DEFINE_PROP_UINT8("num-ss-bits", XilinxSPIPS, num_cs, 4), > @@ -729,6 +758,7 @@ static void xilinx_qspips_class_init(ObjectClass *klass, void * data) > XilinxSPIPSClass *xsc = XILINX_SPIPS_CLASS(klass); > > dc->realize = xilinx_qspips_realize; > + dc->props = xilinx_qspips_properties; > xsc->reg_ops = &qspips_ops; > xsc->rx_fifo_size = RXFF_A_Q; > xsc->tx_fifo_size = TXFF_A_Q; > -- > 1.8.3.1 >
On 11 August 2017 at 15:29, Edgar E. Iglesias <edgar.iglesias@gmail.com> wrote: > On Fri, Aug 11, 2017 at 09:54:12AM +0200, KONRAD Frederic wrote: >> This adds mmio-exec property to workaround the migration bug. >> When enabled the migration is blocked and will return an error. >> >> Signed-off-by: KONRAD Frederic <frederic.konrad@adacore.com> > > Thanks Fred! > > Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> > Thanks; v2 applied to master. -- PMM
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