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-rw-r--r--hw/ppc/ppc.c186
1 files changed, 122 insertions, 64 deletions
diff --git a/hw/ppc/ppc.c b/hw/ppc/ppc.c
index e1c095c7e..71df47174 100644
--- a/hw/ppc/ppc.c
+++ b/hw/ppc/ppc.c
@@ -26,6 +26,7 @@
#include "hw/ppc/ppc_e500.h"
#include "qemu/timer.h"
#include "sysemu/sysemu.h"
+#include "sysemu/cpus.h"
#include "hw/timer/m48t59.h"
#include "qemu/log.h"
#include "hw/loader.h"
@@ -443,7 +444,7 @@ void ppce500_set_mpic_proxy(bool enabled)
{
CPUState *cs;
- for (cs = first_cpu; cs != NULL; cs = cs->next_cpu) {
+ CPU_FOREACH(cs) {
PowerPCCPU *cpu = POWERPC_CPU(cs);
cpu->env.mpic_proxy = enabled;
@@ -471,7 +472,7 @@ uint64_t cpu_ppc_load_tbl (CPUPPCState *env)
return env->spr[SPR_TBL];
}
- tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->tb_offset);
+ tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->tb_offset);
LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb);
return tb;
@@ -482,7 +483,7 @@ static inline uint32_t _cpu_ppc_load_tbu(CPUPPCState *env)
ppc_tb_t *tb_env = env->tb_env;
uint64_t tb;
- tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->tb_offset);
+ tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->tb_offset);
LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb);
return tb >> 32;
@@ -510,9 +511,9 @@ void cpu_ppc_store_tbl (CPUPPCState *env, uint32_t value)
ppc_tb_t *tb_env = env->tb_env;
uint64_t tb;
- tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->tb_offset);
+ tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->tb_offset);
tb &= 0xFFFFFFFF00000000ULL;
- cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock),
+ cpu_ppc_store_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
&tb_env->tb_offset, tb | (uint64_t)value);
}
@@ -521,9 +522,9 @@ static inline void _cpu_ppc_store_tbu(CPUPPCState *env, uint32_t value)
ppc_tb_t *tb_env = env->tb_env;
uint64_t tb;
- tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->tb_offset);
+ tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->tb_offset);
tb &= 0x00000000FFFFFFFFULL;
- cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock),
+ cpu_ppc_store_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
&tb_env->tb_offset, ((uint64_t)value << 32) | tb);
}
@@ -537,7 +538,7 @@ uint64_t cpu_ppc_load_atbl (CPUPPCState *env)
ppc_tb_t *tb_env = env->tb_env;
uint64_t tb;
- tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->atb_offset);
+ tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->atb_offset);
LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb);
return tb;
@@ -548,7 +549,7 @@ uint32_t cpu_ppc_load_atbu (CPUPPCState *env)
ppc_tb_t *tb_env = env->tb_env;
uint64_t tb;
- tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->atb_offset);
+ tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->atb_offset);
LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb);
return tb >> 32;
@@ -559,9 +560,9 @@ void cpu_ppc_store_atbl (CPUPPCState *env, uint32_t value)
ppc_tb_t *tb_env = env->tb_env;
uint64_t tb;
- tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->atb_offset);
+ tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->atb_offset);
tb &= 0xFFFFFFFF00000000ULL;
- cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock),
+ cpu_ppc_store_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
&tb_env->atb_offset, tb | (uint64_t)value);
}
@@ -570,9 +571,9 @@ void cpu_ppc_store_atbu (CPUPPCState *env, uint32_t value)
ppc_tb_t *tb_env = env->tb_env;
uint64_t tb;
- tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->atb_offset);
+ tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->atb_offset);
tb &= 0x00000000FFFFFFFFULL;
- cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock),
+ cpu_ppc_store_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
&tb_env->atb_offset, ((uint64_t)value << 32) | tb);
}
@@ -583,7 +584,7 @@ static void cpu_ppc_tb_stop (CPUPPCState *env)
/* If the time base is already frozen, do nothing */
if (tb_env->tb_freq != 0) {
- vmclk = qemu_get_clock_ns(vm_clock);
+ vmclk = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
/* Get the time base */
tb = cpu_ppc_get_tb(tb_env, vmclk, tb_env->tb_offset);
/* Get the alternate time base */
@@ -605,7 +606,7 @@ static void cpu_ppc_tb_start (CPUPPCState *env)
/* If the time base is not frozen, do nothing */
if (tb_env->tb_freq == 0) {
- vmclk = qemu_get_clock_ns(vm_clock);
+ vmclk = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
/* Get the time base from tb_offset */
tb = tb_env->tb_offset;
/* Get the alternate time base from atb_offset */
@@ -619,13 +620,20 @@ static void cpu_ppc_tb_start (CPUPPCState *env)
}
}
+bool ppc_decr_clear_on_delivery(CPUPPCState *env)
+{
+ ppc_tb_t *tb_env = env->tb_env;
+ int flags = PPC_DECR_UNDERFLOW_TRIGGERED | PPC_DECR_UNDERFLOW_LEVEL;
+ return ((tb_env->flags & flags) == PPC_DECR_UNDERFLOW_TRIGGERED);
+}
+
static inline uint32_t _cpu_ppc_load_decr(CPUPPCState *env, uint64_t next)
{
ppc_tb_t *tb_env = env->tb_env;
uint32_t decr;
int64_t diff;
- diff = next - qemu_get_clock_ns(vm_clock);
+ diff = next - qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
if (diff >= 0) {
decr = muldiv64(diff, tb_env->decr_freq, get_ticks_per_sec());
} else if (tb_env->flags & PPC_TIMER_BOOKE) {
@@ -661,7 +669,7 @@ uint64_t cpu_ppc_load_purr (CPUPPCState *env)
ppc_tb_t *tb_env = env->tb_env;
uint64_t diff;
- diff = qemu_get_clock_ns(vm_clock) - tb_env->purr_start;
+ diff = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - tb_env->purr_start;
return tb_env->purr_load + muldiv64(diff, tb_env->tb_freq, get_ticks_per_sec());
}
@@ -676,6 +684,11 @@ static inline void cpu_ppc_decr_excp(PowerPCCPU *cpu)
ppc_set_irq(cpu, PPC_INTERRUPT_DECR, 1);
}
+static inline void cpu_ppc_decr_lower(PowerPCCPU *cpu)
+{
+ ppc_set_irq(cpu, PPC_INTERRUPT_DECR, 0);
+}
+
static inline void cpu_ppc_hdecr_excp(PowerPCCPU *cpu)
{
/* Raise it */
@@ -683,11 +696,16 @@ static inline void cpu_ppc_hdecr_excp(PowerPCCPU *cpu)
ppc_set_irq(cpu, PPC_INTERRUPT_HDECR, 1);
}
+static inline void cpu_ppc_hdecr_lower(PowerPCCPU *cpu)
+{
+ ppc_set_irq(cpu, PPC_INTERRUPT_HDECR, 0);
+}
+
static void __cpu_ppc_store_decr(PowerPCCPU *cpu, uint64_t *nextp,
- struct QEMUTimer *timer,
- void (*raise_excp)(PowerPCCPU *),
- uint32_t decr, uint32_t value,
- int is_excp)
+ QEMUTimer *timer,
+ void (*raise_excp)(void *),
+ void (*lower_excp)(PowerPCCPU *),
+ uint32_t decr, uint32_t value)
{
CPUPPCState *env = &cpu->env;
ppc_tb_t *tb_env = env->tb_env;
@@ -701,59 +719,74 @@ static void __cpu_ppc_store_decr(PowerPCCPU *cpu, uint64_t *nextp,
return;
}
- now = qemu_get_clock_ns(vm_clock);
- next = now + muldiv64(value, get_ticks_per_sec(), tb_env->decr_freq);
- if (is_excp) {
- next += *nextp - now;
+ /*
+ * Going from 2 -> 1, 1 -> 0 or 0 -> -1 is the event to generate a DEC
+ * interrupt.
+ *
+ * If we get a really small DEC value, we can assume that by the time we
+ * handled it we should inject an interrupt already.
+ *
+ * On MSB level based DEC implementations the MSB always means the interrupt
+ * is pending, so raise it on those.
+ *
+ * On MSB edge based DEC implementations the MSB going from 0 -> 1 triggers
+ * an edge interrupt, so raise it here too.
+ */
+ if ((value < 3) ||
+ ((tb_env->flags & PPC_DECR_UNDERFLOW_LEVEL) && (value & 0x80000000)) ||
+ ((tb_env->flags & PPC_DECR_UNDERFLOW_TRIGGERED) && (value & 0x80000000)
+ && !(decr & 0x80000000))) {
+ (*raise_excp)(cpu);
+ return;
}
- if (next == now) {
- next++;
+
+ /* On MSB level based systems a 0 for the MSB stops interrupt delivery */
+ if (!(value & 0x80000000) && (tb_env->flags & PPC_DECR_UNDERFLOW_LEVEL)) {
+ (*lower_excp)(cpu);
}
+
+ /* Calculate the next timer event */
+ now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
+ next = now + muldiv64(value, get_ticks_per_sec(), tb_env->decr_freq);
*nextp = next;
- /* Adjust timer */
- qemu_mod_timer(timer, next);
- /* If we set a negative value and the decrementer was positive, raise an
- * exception.
- */
- if ((tb_env->flags & PPC_DECR_UNDERFLOW_TRIGGERED)
- && (value & 0x80000000)
- && !(decr & 0x80000000)) {
- (*raise_excp)(cpu);
- }
+ /* Adjust timer */
+ timer_mod(timer, next);
}
static inline void _cpu_ppc_store_decr(PowerPCCPU *cpu, uint32_t decr,
- uint32_t value, int is_excp)
+ uint32_t value)
{
ppc_tb_t *tb_env = cpu->env.tb_env;
__cpu_ppc_store_decr(cpu, &tb_env->decr_next, tb_env->decr_timer,
- &cpu_ppc_decr_excp, decr, value, is_excp);
+ tb_env->decr_timer->cb, &cpu_ppc_decr_lower, decr,
+ value);
}
void cpu_ppc_store_decr (CPUPPCState *env, uint32_t value)
{
PowerPCCPU *cpu = ppc_env_get_cpu(env);
- _cpu_ppc_store_decr(cpu, cpu_ppc_load_decr(env), value, 0);
+ _cpu_ppc_store_decr(cpu, cpu_ppc_load_decr(env), value);
}
static void cpu_ppc_decr_cb(void *opaque)
{
PowerPCCPU *cpu = opaque;
- _cpu_ppc_store_decr(cpu, 0x00000000, 0xFFFFFFFF, 1);
+ cpu_ppc_decr_excp(cpu);
}
static inline void _cpu_ppc_store_hdecr(PowerPCCPU *cpu, uint32_t hdecr,
- uint32_t value, int is_excp)
+ uint32_t value)
{
ppc_tb_t *tb_env = cpu->env.tb_env;
if (tb_env->hdecr_timer != NULL) {
__cpu_ppc_store_decr(cpu, &tb_env->hdecr_next, tb_env->hdecr_timer,
- &cpu_ppc_hdecr_excp, hdecr, value, is_excp);
+ tb_env->hdecr_timer->cb, &cpu_ppc_hdecr_lower,
+ hdecr, value);
}
}
@@ -761,14 +794,14 @@ void cpu_ppc_store_hdecr (CPUPPCState *env, uint32_t value)
{
PowerPCCPU *cpu = ppc_env_get_cpu(env);
- _cpu_ppc_store_hdecr(cpu, cpu_ppc_load_hdecr(env), value, 0);
+ _cpu_ppc_store_hdecr(cpu, cpu_ppc_load_hdecr(env), value);
}
static void cpu_ppc_hdecr_cb(void *opaque)
{
PowerPCCPU *cpu = opaque;
- _cpu_ppc_store_hdecr(cpu, 0x00000000, 0xFFFFFFFF, 1);
+ cpu_ppc_hdecr_excp(cpu);
}
static void cpu_ppc_store_purr(PowerPCCPU *cpu, uint64_t value)
@@ -776,7 +809,7 @@ static void cpu_ppc_store_purr(PowerPCCPU *cpu, uint64_t value)
ppc_tb_t *tb_env = cpu->env.tb_env;
tb_env->purr_load = value;
- tb_env->purr_start = qemu_get_clock_ns(vm_clock);
+ tb_env->purr_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
}
static void cpu_ppc_set_tb_clk (void *opaque, uint32_t freq)
@@ -791,8 +824,8 @@ static void cpu_ppc_set_tb_clk (void *opaque, uint32_t freq)
* if a decrementer exception is pending when it enables msr_ee at startup,
* it's not ready to handle it...
*/
- _cpu_ppc_store_decr(cpu, 0xFFFFFFFF, 0xFFFFFFFF, 0);
- _cpu_ppc_store_hdecr(cpu, 0xFFFFFFFF, 0xFFFFFFFF, 0);
+ _cpu_ppc_store_decr(cpu, 0xFFFFFFFF, 0xFFFFFFFF);
+ _cpu_ppc_store_hdecr(cpu, 0xFFFFFFFF, 0xFFFFFFFF);
cpu_ppc_store_purr(cpu, 0x0000000000000000ULL);
}
@@ -805,12 +838,16 @@ clk_setup_cb cpu_ppc_tb_init (CPUPPCState *env, uint32_t freq)
tb_env = g_malloc0(sizeof(ppc_tb_t));
env->tb_env = tb_env;
tb_env->flags = PPC_DECR_UNDERFLOW_TRIGGERED;
+ if (env->insns_flags & PPC_SEGMENT_64B) {
+ /* All Book3S 64bit CPUs implement level based DEC logic */
+ tb_env->flags |= PPC_DECR_UNDERFLOW_LEVEL;
+ }
/* Create new timer */
- tb_env->decr_timer = qemu_new_timer_ns(vm_clock, &cpu_ppc_decr_cb, cpu);
+ tb_env->decr_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, &cpu_ppc_decr_cb, cpu);
if (0) {
/* XXX: find a suitable condition to enable the hypervisor decrementer
*/
- tb_env->hdecr_timer = qemu_new_timer_ns(vm_clock, &cpu_ppc_hdecr_cb,
+ tb_env->hdecr_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, &cpu_ppc_hdecr_cb,
cpu);
} else {
tb_env->hdecr_timer = NULL;
@@ -856,9 +893,9 @@ typedef struct ppc40x_timer_t ppc40x_timer_t;
struct ppc40x_timer_t {
uint64_t pit_reload; /* PIT auto-reload value */
uint64_t fit_next; /* Tick for next FIT interrupt */
- struct QEMUTimer *fit_timer;
+ QEMUTimer *fit_timer;
uint64_t wdt_next; /* Tick for next WDT interrupt */
- struct QEMUTimer *wdt_timer;
+ QEMUTimer *wdt_timer;
/* 405 have the PIT, 440 have a DECR. */
unsigned int decr_excp;
@@ -877,7 +914,7 @@ static void cpu_4xx_fit_cb (void *opaque)
cpu = ppc_env_get_cpu(env);
tb_env = env->tb_env;
ppc40x_timer = tb_env->opaque;
- now = qemu_get_clock_ns(vm_clock);
+ now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
switch ((env->spr[SPR_40x_TCR] >> 24) & 0x3) {
case 0:
next = 1 << 9;
@@ -898,7 +935,7 @@ static void cpu_4xx_fit_cb (void *opaque)
next = now + muldiv64(next, get_ticks_per_sec(), tb_env->tb_freq);
if (next == now)
next++;
- qemu_mod_timer(ppc40x_timer->fit_timer, next);
+ timer_mod(ppc40x_timer->fit_timer, next);
env->spr[SPR_40x_TSR] |= 1 << 26;
if ((env->spr[SPR_40x_TCR] >> 23) & 0x1) {
ppc_set_irq(cpu, PPC_INTERRUPT_FIT, 1);
@@ -920,18 +957,18 @@ static void start_stop_pit (CPUPPCState *env, ppc_tb_t *tb_env, int is_excp)
(is_excp && !((env->spr[SPR_40x_TCR] >> 22) & 0x1))) {
/* Stop PIT */
LOG_TB("%s: stop PIT\n", __func__);
- qemu_del_timer(tb_env->decr_timer);
+ timer_del(tb_env->decr_timer);
} else {
LOG_TB("%s: start PIT %016" PRIx64 "\n",
__func__, ppc40x_timer->pit_reload);
- now = qemu_get_clock_ns(vm_clock);
+ now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
next = now + muldiv64(ppc40x_timer->pit_reload,
get_ticks_per_sec(), tb_env->decr_freq);
if (is_excp)
next += tb_env->decr_next - now;
if (next == now)
next++;
- qemu_mod_timer(tb_env->decr_timer, next);
+ timer_mod(tb_env->decr_timer, next);
tb_env->decr_next = next;
}
}
@@ -973,7 +1010,7 @@ static void cpu_4xx_wdt_cb (void *opaque)
cpu = ppc_env_get_cpu(env);
tb_env = env->tb_env;
ppc40x_timer = tb_env->opaque;
- now = qemu_get_clock_ns(vm_clock);
+ now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
switch ((env->spr[SPR_40x_TCR] >> 30) & 0x3) {
case 0:
next = 1 << 17;
@@ -999,12 +1036,12 @@ static void cpu_4xx_wdt_cb (void *opaque)
switch ((env->spr[SPR_40x_TSR] >> 30) & 0x3) {
case 0x0:
case 0x1:
- qemu_mod_timer(ppc40x_timer->wdt_timer, next);
+ timer_mod(ppc40x_timer->wdt_timer, next);
ppc40x_timer->wdt_next = next;
- env->spr[SPR_40x_TSR] |= 1 << 31;
+ env->spr[SPR_40x_TSR] |= 1U << 31;
break;
case 0x2:
- qemu_mod_timer(ppc40x_timer->wdt_timer, next);
+ timer_mod(ppc40x_timer->wdt_timer, next);
ppc40x_timer->wdt_next = next;
env->spr[SPR_40x_TSR] |= 1 << 30;
if ((env->spr[SPR_40x_TCR] >> 27) & 0x1) {
@@ -1076,11 +1113,11 @@ clk_setup_cb ppc_40x_timers_init (CPUPPCState *env, uint32_t freq,
LOG_TB("%s freq %" PRIu32 "\n", __func__, freq);
if (ppc40x_timer != NULL) {
/* We use decr timer for PIT */
- tb_env->decr_timer = qemu_new_timer_ns(vm_clock, &cpu_4xx_pit_cb, env);
+ tb_env->decr_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, &cpu_4xx_pit_cb, env);
ppc40x_timer->fit_timer =
- qemu_new_timer_ns(vm_clock, &cpu_4xx_fit_cb, env);
+ timer_new_ns(QEMU_CLOCK_VIRTUAL, &cpu_4xx_fit_cb, env);
ppc40x_timer->wdt_timer =
- qemu_new_timer_ns(vm_clock, &cpu_4xx_wdt_cb, env);
+ timer_new_ns(QEMU_CLOCK_VIRTUAL, &cpu_4xx_wdt_cb, env);
ppc40x_timer->decr_excp = decr_excp;
}
@@ -1362,3 +1399,24 @@ int PPC_NVRAM_set_params (nvram_t *nvram, uint16_t NVRAM_size,
return 0;
}
+
+/* CPU device-tree ID helpers */
+int ppc_get_vcpu_dt_id(PowerPCCPU *cpu)
+{
+ return cpu->cpu_dt_id;
+}
+
+PowerPCCPU *ppc_get_vcpu_by_dt_id(int cpu_dt_id)
+{
+ CPUState *cs;
+
+ CPU_FOREACH(cs) {
+ PowerPCCPU *cpu = POWERPC_CPU(cs);
+
+ if (cpu->cpu_dt_id == cpu_dt_id) {
+ return cpu;
+ }
+ }
+
+ return NULL;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 13:39:39 +0000