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-rw-r--r--hw/slavio_timer.c435
1 files changed, 0 insertions, 435 deletions
diff --git a/hw/slavio_timer.c b/hw/slavio_timer.c
deleted file mode 100644
index 83f22a0366..0000000000
--- a/hw/slavio_timer.c
+++ /dev/null
@@ -1,435 +0,0 @@
-/*
- * QEMU Sparc SLAVIO timer controller emulation
- *
- * Copyright (c) 2003-2005 Fabrice Bellard
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include "hw/sun4m.h"
-#include "qemu/timer.h"
-#include "hw/ptimer.h"
-#include "hw/sysbus.h"
-#include "trace.h"
-
-/*
- * Registers of hardware timer in sun4m.
- *
- * This is the timer/counter part of chip STP2001 (Slave I/O), also
- * produced as NCR89C105. See
- * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C105.txt
- *
- * The 31-bit counter is incremented every 500ns by bit 9. Bits 8..0
- * are zero. Bit 31 is 1 when count has been reached.
- *
- * Per-CPU timers interrupt local CPU, system timer uses normal
- * interrupt routing.
- *
- */
-
-#define MAX_CPUS 16
-
-typedef struct CPUTimerState {
- qemu_irq irq;
- ptimer_state *timer;
- uint32_t count, counthigh, reached;
- /* processor only */
- uint32_t running;
- uint64_t limit;
-} CPUTimerState;
-
-typedef struct SLAVIO_TIMERState {
- SysBusDevice busdev;
- uint32_t num_cpus;
- uint32_t cputimer_mode;
- CPUTimerState cputimer[MAX_CPUS + 1];
-} SLAVIO_TIMERState;
-
-typedef struct TimerContext {
- MemoryRegion iomem;
- SLAVIO_TIMERState *s;
- unsigned int timer_index; /* 0 for system, 1 ... MAX_CPUS for CPU timers */
-} TimerContext;
-
-#define SYS_TIMER_SIZE 0x14
-#define CPU_TIMER_SIZE 0x10
-
-#define TIMER_LIMIT 0
-#define TIMER_COUNTER 1
-#define TIMER_COUNTER_NORST 2
-#define TIMER_STATUS 3
-#define TIMER_MODE 4
-
-#define TIMER_COUNT_MASK32 0xfffffe00
-#define TIMER_LIMIT_MASK32 0x7fffffff
-#define TIMER_MAX_COUNT64 0x7ffffffffffffe00ULL
-#define TIMER_MAX_COUNT32 0x7ffffe00ULL
-#define TIMER_REACHED 0x80000000
-#define TIMER_PERIOD 500ULL // 500ns
-#define LIMIT_TO_PERIODS(l) (((l) >> 9) - 1)
-#define PERIODS_TO_LIMIT(l) (((l) + 1) << 9)
-
-static int slavio_timer_is_user(TimerContext *tc)
-{
- SLAVIO_TIMERState *s = tc->s;
- unsigned int timer_index = tc->timer_index;
-
- return timer_index != 0 && (s->cputimer_mode & (1 << (timer_index - 1)));
-}
-
-// Update count, set irq, update expire_time
-// Convert from ptimer countdown units
-static void slavio_timer_get_out(CPUTimerState *t)
-{
- uint64_t count, limit;
-
- if (t->limit == 0) { /* free-run system or processor counter */
- limit = TIMER_MAX_COUNT32;
- } else {
- limit = t->limit;
- }
- count = limit - PERIODS_TO_LIMIT(ptimer_get_count(t->timer));
-
- trace_slavio_timer_get_out(t->limit, t->counthigh, t->count);
- t->count = count & TIMER_COUNT_MASK32;
- t->counthigh = count >> 32;
-}
-
-// timer callback
-static void slavio_timer_irq(void *opaque)
-{
- TimerContext *tc = opaque;
- SLAVIO_TIMERState *s = tc->s;
- CPUTimerState *t = &s->cputimer[tc->timer_index];
-
- slavio_timer_get_out(t);
- trace_slavio_timer_irq(t->counthigh, t->count);
- /* if limit is 0 (free-run), there will be no match */
- if (t->limit != 0) {
- t->reached = TIMER_REACHED;
- }
- /* there is no interrupt if user timer or free-run */
- if (!slavio_timer_is_user(tc) && t->limit != 0) {
- qemu_irq_raise(t->irq);
- }
-}
-
-static uint64_t slavio_timer_mem_readl(void *opaque, hwaddr addr,
- unsigned size)
-{
- TimerContext *tc = opaque;
- SLAVIO_TIMERState *s = tc->s;
- uint32_t saddr, ret;
- unsigned int timer_index = tc->timer_index;
- CPUTimerState *t = &s->cputimer[timer_index];
-
- saddr = addr >> 2;
- switch (saddr) {
- case TIMER_LIMIT:
- // read limit (system counter mode) or read most signifying
- // part of counter (user mode)
- if (slavio_timer_is_user(tc)) {
- // read user timer MSW
- slavio_timer_get_out(t);
- ret = t->counthigh | t->reached;
- } else {
- // read limit
- // clear irq
- qemu_irq_lower(t->irq);
- t->reached = 0;
- ret = t->limit & TIMER_LIMIT_MASK32;
- }
- break;
- case TIMER_COUNTER:
- // read counter and reached bit (system mode) or read lsbits
- // of counter (user mode)
- slavio_timer_get_out(t);
- if (slavio_timer_is_user(tc)) { // read user timer LSW
- ret = t->count & TIMER_MAX_COUNT64;
- } else { // read limit
- ret = (t->count & TIMER_MAX_COUNT32) |
- t->reached;
- }
- break;
- case TIMER_STATUS:
- // only available in processor counter/timer
- // read start/stop status
- if (timer_index > 0) {
- ret = t->running;
- } else {
- ret = 0;
- }
- break;
- case TIMER_MODE:
- // only available in system counter
- // read user/system mode
- ret = s->cputimer_mode;
- break;
- default:
- trace_slavio_timer_mem_readl_invalid(addr);
- ret = 0;
- break;
- }
- trace_slavio_timer_mem_readl(addr, ret);
- return ret;
-}
-
-static void slavio_timer_mem_writel(void *opaque, hwaddr addr,
- uint64_t val, unsigned size)
-{
- TimerContext *tc = opaque;
- SLAVIO_TIMERState *s = tc->s;
- uint32_t saddr;
- unsigned int timer_index = tc->timer_index;
- CPUTimerState *t = &s->cputimer[timer_index];
-
- trace_slavio_timer_mem_writel(addr, val);
- saddr = addr >> 2;
- switch (saddr) {
- case TIMER_LIMIT:
- if (slavio_timer_is_user(tc)) {
- uint64_t count;
-
- // set user counter MSW, reset counter
- t->limit = TIMER_MAX_COUNT64;
- t->counthigh = val & (TIMER_MAX_COUNT64 >> 32);
- t->reached = 0;
- count = ((uint64_t)t->counthigh << 32) | t->count;
- trace_slavio_timer_mem_writel_limit(timer_index, count);
- ptimer_set_count(t->timer, LIMIT_TO_PERIODS(t->limit - count));
- } else {
- // set limit, reset counter
- qemu_irq_lower(t->irq);
- t->limit = val & TIMER_MAX_COUNT32;
- if (t->timer) {
- if (t->limit == 0) { /* free-run */
- ptimer_set_limit(t->timer,
- LIMIT_TO_PERIODS(TIMER_MAX_COUNT32), 1);
- } else {
- ptimer_set_limit(t->timer, LIMIT_TO_PERIODS(t->limit), 1);
- }
- }
- }
- break;
- case TIMER_COUNTER:
- if (slavio_timer_is_user(tc)) {
- uint64_t count;
-
- // set user counter LSW, reset counter
- t->limit = TIMER_MAX_COUNT64;
- t->count = val & TIMER_MAX_COUNT64;
- t->reached = 0;
- count = ((uint64_t)t->counthigh) << 32 | t->count;
- trace_slavio_timer_mem_writel_limit(timer_index, count);
- ptimer_set_count(t->timer, LIMIT_TO_PERIODS(t->limit - count));
- } else {
- trace_slavio_timer_mem_writel_counter_invalid();
- }
- break;
- case TIMER_COUNTER_NORST:
- // set limit without resetting counter
- t->limit = val & TIMER_MAX_COUNT32;
- if (t->limit == 0) { /* free-run */
- ptimer_set_limit(t->timer, LIMIT_TO_PERIODS(TIMER_MAX_COUNT32), 0);
- } else {
- ptimer_set_limit(t->timer, LIMIT_TO_PERIODS(t->limit), 0);
- }
- break;
- case TIMER_STATUS:
- if (slavio_timer_is_user(tc)) {
- // start/stop user counter
- if ((val & 1) && !t->running) {
- trace_slavio_timer_mem_writel_status_start(timer_index);
- ptimer_run(t->timer, 0);
- t->running = 1;
- } else if (!(val & 1) && t->running) {
- trace_slavio_timer_mem_writel_status_stop(timer_index);
- ptimer_stop(t->timer);
- t->running = 0;
- }
- }
- break;
- case TIMER_MODE:
- if (timer_index == 0) {
- unsigned int i;
-
- for (i = 0; i < s->num_cpus; i++) {
- unsigned int processor = 1 << i;
- CPUTimerState *curr_timer = &s->cputimer[i + 1];
-
- // check for a change in timer mode for this processor
- if ((val & processor) != (s->cputimer_mode & processor)) {
- if (val & processor) { // counter -> user timer
- qemu_irq_lower(curr_timer->irq);
- // counters are always running
- ptimer_stop(curr_timer->timer);
- curr_timer->running = 0;
- // user timer limit is always the same
- curr_timer->limit = TIMER_MAX_COUNT64;
- ptimer_set_limit(curr_timer->timer,
- LIMIT_TO_PERIODS(curr_timer->limit),
- 1);
- // set this processors user timer bit in config
- // register
- s->cputimer_mode |= processor;
- trace_slavio_timer_mem_writel_mode_user(timer_index);
- } else { // user timer -> counter
- // stop the user timer if it is running
- if (curr_timer->running) {
- ptimer_stop(curr_timer->timer);
- }
- // start the counter
- ptimer_run(curr_timer->timer, 0);
- curr_timer->running = 1;
- // clear this processors user timer bit in config
- // register
- s->cputimer_mode &= ~processor;
- trace_slavio_timer_mem_writel_mode_counter(timer_index);
- }
- }
- }
- } else {
- trace_slavio_timer_mem_writel_mode_invalid();
- }
- break;
- default:
- trace_slavio_timer_mem_writel_invalid(addr);
- break;
- }
-}
-
-static const MemoryRegionOps slavio_timer_mem_ops = {
- .read = slavio_timer_mem_readl,
- .write = slavio_timer_mem_writel,
- .endianness = DEVICE_NATIVE_ENDIAN,
- .valid = {
- .min_access_size = 4,
- .max_access_size = 4,
- },
-};
-
-static const VMStateDescription vmstate_timer = {
- .name ="timer",
- .version_id = 3,
- .minimum_version_id = 3,
- .minimum_version_id_old = 3,
- .fields = (VMStateField []) {
- VMSTATE_UINT64(limit, CPUTimerState),
- VMSTATE_UINT32(count, CPUTimerState),
- VMSTATE_UINT32(counthigh, CPUTimerState),
- VMSTATE_UINT32(reached, CPUTimerState),
- VMSTATE_UINT32(running, CPUTimerState),
- VMSTATE_PTIMER(timer, CPUTimerState),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static const VMStateDescription vmstate_slavio_timer = {
- .name ="slavio_timer",
- .version_id = 3,
- .minimum_version_id = 3,
- .minimum_version_id_old = 3,
- .fields = (VMStateField []) {
- VMSTATE_STRUCT_ARRAY(cputimer, SLAVIO_TIMERState, MAX_CPUS + 1, 3,
- vmstate_timer, CPUTimerState),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static void slavio_timer_reset(DeviceState *d)
-{
- SLAVIO_TIMERState *s = container_of(d, SLAVIO_TIMERState, busdev.qdev);
- unsigned int i;
- CPUTimerState *curr_timer;
-
- for (i = 0; i <= MAX_CPUS; i++) {
- curr_timer = &s->cputimer[i];
- curr_timer->limit = 0;
- curr_timer->count = 0;
- curr_timer->reached = 0;
- if (i <= s->num_cpus) {
- ptimer_set_limit(curr_timer->timer,
- LIMIT_TO_PERIODS(TIMER_MAX_COUNT32), 1);
- ptimer_run(curr_timer->timer, 0);
- curr_timer->running = 1;
- }
- }
- s->cputimer_mode = 0;
-}
-
-static int slavio_timer_init1(SysBusDevice *dev)
-{
- SLAVIO_TIMERState *s = FROM_SYSBUS(SLAVIO_TIMERState, dev);
- QEMUBH *bh;
- unsigned int i;
- TimerContext *tc;
-
- for (i = 0; i <= MAX_CPUS; i++) {
- uint64_t size;
- char timer_name[20];
-
- tc = g_malloc0(sizeof(TimerContext));
- tc->s = s;
- tc->timer_index = i;
-
- bh = qemu_bh_new(slavio_timer_irq, tc);
- s->cputimer[i].timer = ptimer_init(bh);
- ptimer_set_period(s->cputimer[i].timer, TIMER_PERIOD);
-
- size = i == 0 ? SYS_TIMER_SIZE : CPU_TIMER_SIZE;
- snprintf(timer_name, sizeof(timer_name), "timer-%i", i);
- memory_region_init_io(&tc->iomem, &slavio_timer_mem_ops, tc,
- timer_name, size);
- sysbus_init_mmio(dev, &tc->iomem);
-
- sysbus_init_irq(dev, &s->cputimer[i].irq);
- }
-
- return 0;
-}
-
-static Property slavio_timer_properties[] = {
- DEFINE_PROP_UINT32("num_cpus", SLAVIO_TIMERState, num_cpus, 0),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void slavio_timer_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
-
- k->init = slavio_timer_init1;
- dc->reset = slavio_timer_reset;
- dc->vmsd = &vmstate_slavio_timer;
- dc->props = slavio_timer_properties;
-}
-
-static const TypeInfo slavio_timer_info = {
- .name = "slavio_timer",
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(SLAVIO_TIMERState),
- .class_init = slavio_timer_class_init,
-};
-
-static void slavio_timer_register_types(void)
-{
- type_register_static(&slavio_timer_info);
-}
-
-type_init(slavio_timer_register_types)
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