@@ -66,20 +66,17 @@ static bool cpu_mips_itu_supported(CPUMIPSState *env)
static void mips_cps_realize(DeviceState *dev, Error **errp)
{
MIPSCPSState *s = MIPS_CPS(dev);
- CPUMIPSState *env;
- MIPSCPU *cpu;
- int i;
target_ulong gcr_base;
bool itu_present = false;
- bool saar_present = false;
if (!clock_get(s->clock)) {
error_setg(errp, "CPS input clock is not connected to an output clock");
return;
}
- for (i = 0; i < s->num_vp; i++) {
- cpu = MIPS_CPU(object_new(s->cpu_type));
+ for (int i = 0; i < s->num_vp; i++) {
+ MIPSCPU *cpu = MIPS_CPU(object_new(s->cpu_type));
+ CPUMIPSState *env = &cpu->env;
/* All VPs are halted on reset. Leave powering up to CPC. */
if (!object_property_set_bool(OBJECT(cpu), "start-powered-off", true,
@@ -97,7 +94,6 @@ static void mips_cps_realize(DeviceState *dev, Error **errp)
cpu_mips_irq_init_cpu(cpu);
cpu_mips_clock_init(cpu);
- env = &cpu->env;
if (cpu_mips_itu_supported(env)) {
itu_present = true;
/* Attach ITC Tag to the VP */
@@ -107,22 +103,15 @@ static void mips_cps_realize(DeviceState *dev, Error **errp)
qemu_register_reset(main_cpu_reset, cpu);
}
- cpu = MIPS_CPU(first_cpu);
- env = &cpu->env;
- saar_present = (bool)env->saarp;
-
/* Inter-Thread Communication Unit */
if (itu_present) {
object_initialize_child(OBJECT(dev), "itu", &s->itu, TYPE_MIPS_ITU);
+ object_property_set_link(OBJECT(&s->itu), "cpu[0]",
+ OBJECT(first_cpu), &error_abort);
object_property_set_uint(OBJECT(&s->itu), "num-fifo", 16,
&error_abort);
object_property_set_uint(OBJECT(&s->itu), "num-semaphores", 16,
&error_abort);
- object_property_set_bool(OBJECT(&s->itu), "saar-present", saar_present,
- &error_abort);
- if (saar_present) {
- s->itu.saar = &env->CP0_SAAR;
- }
if (!sysbus_realize(SYS_BUS_DEVICE(&s->itu), errp)) {
return;
}
@@ -158,7 +147,7 @@ static void mips_cps_realize(DeviceState *dev, Error **errp)
sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gic), 0));
/* Global Configuration Registers */
- gcr_base = env->CP0_CMGCRBase << 4;
+ gcr_base = MIPS_CPU(first_cpu)->env.CP0_CMGCRBase << 4;
object_initialize_child(OBJECT(dev), "gcr", &s->gcr, TYPE_MIPS_GCR);
object_property_set_uint(OBJECT(&s->gcr), "num-vp", s->num_vp,
@@ -93,10 +93,10 @@ void itc_reconfigure(MIPSITUState *tag)
uint64_t size = (1 * KiB) + (am[1] & ITC_AM1_ADDR_MASK_MASK);
bool is_enabled = (am[0] & ITC_AM0_EN_MASK) != 0;
- if (tag->saar_present) {
- address = ((*(uint64_t *) tag->saar) & 0xFFFFFFFFE000ULL) << 4;
- size = 1ULL << ((*(uint64_t *) tag->saar >> 1) & 0x1f);
- is_enabled = *(uint64_t *) tag->saar & 1;
+ if (tag->saar) {
+ address = (tag->saar[0] & 0xFFFFFFFFE000ULL) << 4;
+ size = 1ULL << ((tag->saar[0] >> 1) & 0x1f);
+ is_enabled = tag->saar[0] & 1;
}
memory_region_transaction_begin();
@@ -157,7 +157,7 @@ static inline ITCView get_itc_view(hwaddr addr)
static inline int get_cell_stride_shift(const MIPSITUState *s)
{
/* Minimum interval (for EntryGain = 0) is 128 B */
- if (s->saar_present) {
+ if (s->saar) {
return 7 + ((s->icr0 >> ITC_ICR0_BLK_GRAIN) &
ITC_ICR0_BLK_GRAIN_MASK);
} else {
@@ -515,6 +515,7 @@ static void mips_itu_init(Object *obj)
static void mips_itu_realize(DeviceState *dev, Error **errp)
{
MIPSITUState *s = MIPS_ITU(dev);
+ CPUMIPSState *env;
if (s->num_fifo > ITC_FIFO_NUM_MAX) {
error_setg(errp, "Exceed maximum number of FIFO cells: %d",
@@ -526,6 +527,15 @@ static void mips_itu_realize(DeviceState *dev, Error **errp)
s->num_semaphores);
return;
}
+ if (!s->cpu0) {
+ error_setg(errp, "Missing 'cpu[0]' property");
+ return;
+ }
+
+ env = &s->cpu0->env;
+ if (env->saarp) {
+ s->saar = env->CP0_SAAR;
+ }
s->cell = g_new(ITCStorageCell, get_num_cells(s));
}
@@ -534,8 +544,8 @@ static void mips_itu_reset(DeviceState *dev)
{
MIPSITUState *s = MIPS_ITU(dev);
- if (s->saar_present) {
- *(uint64_t *) s->saar = 0x11 << 1;
+ if (s->saar) {
+ s->saar[0] = 0x11 << 1;
s->icr0 = get_num_cells(s) << ITC_ICR0_CELL_NUM;
} else {
s->ITCAddressMap[0] = 0;
@@ -553,7 +563,7 @@ static Property mips_itu_properties[] = {
ITC_FIFO_NUM_MAX),
DEFINE_PROP_UINT32("num-semaphores", MIPSITUState, num_semaphores,
ITC_SEMAPH_NUM_MAX),
- DEFINE_PROP_BOOL("saar-present", MIPSITUState, saar_present, false),
+ DEFINE_PROP_LINK("cpu[0]", MIPSITUState, cpu0, TYPE_MIPS_CPU, MIPSCPU *),
DEFINE_PROP_END_OF_LIST(),
};
@@ -72,9 +72,8 @@ struct MIPSITUState {
uint64_t icr0;
/* SAAR */
- bool saar_present;
- void *saar;
-
+ uint64_t *saar;
+ MIPSCPU *cpu0;
};
/* Get ITC Configuration Tag memory region. */
QOM objects shouldn't access each other internals fields except using the QOM API. mips_cps_realize() instantiates a TYPE_MIPS_ITU object, and directly sets the 'saar' pointer: if (saar_present) { s->itu.saar = &env->CP0_SAAR; } In order to avoid that, pass the MIPS_CPU object via a QOM link property, and set the 'saar' pointer in mips_itu_realize(). Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> --- RFC because not tested. --- hw/mips/cps.c | 23 ++++++----------------- hw/misc/mips_itu.c | 26 ++++++++++++++++++-------- include/hw/misc/mips_itu.h | 5 ++--- 3 files changed, 26 insertions(+), 28 deletions(-)