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Diffstat (limited to 'qemu/hw/timer/etraxfs_timer.c')
-rw-r--r--qemu/hw/timer/etraxfs_timer.c358
1 files changed, 0 insertions, 358 deletions
diff --git a/qemu/hw/timer/etraxfs_timer.c b/qemu/hw/timer/etraxfs_timer.c
deleted file mode 100644
index 36d8f462c..000000000
--- a/qemu/hw/timer/etraxfs_timer.c
+++ /dev/null
@@ -1,358 +0,0 @@
-/*
- * QEMU ETRAX Timers
- *
- * Copyright (c) 2007 Edgar E. Iglesias, Axis Communications AB.
- *
- * 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 "qemu/osdep.h"
-#include "hw/sysbus.h"
-#include "sysemu/sysemu.h"
-#include "qemu/timer.h"
-#include "hw/ptimer.h"
-
-#define D(x)
-
-#define RW_TMR0_DIV 0x00
-#define R_TMR0_DATA 0x04
-#define RW_TMR0_CTRL 0x08
-#define RW_TMR1_DIV 0x10
-#define R_TMR1_DATA 0x14
-#define RW_TMR1_CTRL 0x18
-#define R_TIME 0x38
-#define RW_WD_CTRL 0x40
-#define R_WD_STAT 0x44
-#define RW_INTR_MASK 0x48
-#define RW_ACK_INTR 0x4c
-#define R_INTR 0x50
-#define R_MASKED_INTR 0x54
-
-#define TYPE_ETRAX_FS_TIMER "etraxfs,timer"
-#define ETRAX_TIMER(obj) \
- OBJECT_CHECK(ETRAXTimerState, (obj), TYPE_ETRAX_FS_TIMER)
-
-typedef struct ETRAXTimerState {
- SysBusDevice parent_obj;
-
- MemoryRegion mmio;
- qemu_irq irq;
- qemu_irq nmi;
-
- QEMUBH *bh_t0;
- QEMUBH *bh_t1;
- QEMUBH *bh_wd;
- ptimer_state *ptimer_t0;
- ptimer_state *ptimer_t1;
- ptimer_state *ptimer_wd;
-
- int wd_hits;
-
- /* Control registers. */
- uint32_t rw_tmr0_div;
- uint32_t r_tmr0_data;
- uint32_t rw_tmr0_ctrl;
-
- uint32_t rw_tmr1_div;
- uint32_t r_tmr1_data;
- uint32_t rw_tmr1_ctrl;
-
- uint32_t rw_wd_ctrl;
-
- uint32_t rw_intr_mask;
- uint32_t rw_ack_intr;
- uint32_t r_intr;
- uint32_t r_masked_intr;
-} ETRAXTimerState;
-
-static uint64_t
-timer_read(void *opaque, hwaddr addr, unsigned int size)
-{
- ETRAXTimerState *t = opaque;
- uint32_t r = 0;
-
- switch (addr) {
- case R_TMR0_DATA:
- r = ptimer_get_count(t->ptimer_t0);
- break;
- case R_TMR1_DATA:
- r = ptimer_get_count(t->ptimer_t1);
- break;
- case R_TIME:
- r = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) / 10;
- break;
- case RW_INTR_MASK:
- r = t->rw_intr_mask;
- break;
- case R_MASKED_INTR:
- r = t->r_intr & t->rw_intr_mask;
- break;
- default:
- D(printf ("%s %x\n", __func__, addr));
- break;
- }
- return r;
-}
-
-static void update_ctrl(ETRAXTimerState *t, int tnum)
-{
- unsigned int op;
- unsigned int freq;
- unsigned int freq_hz;
- unsigned int div;
- uint32_t ctrl;
-
- ptimer_state *timer;
-
- if (tnum == 0) {
- ctrl = t->rw_tmr0_ctrl;
- div = t->rw_tmr0_div;
- timer = t->ptimer_t0;
- } else {
- ctrl = t->rw_tmr1_ctrl;
- div = t->rw_tmr1_div;
- timer = t->ptimer_t1;
- }
-
-
- op = ctrl & 3;
- freq = ctrl >> 2;
- freq_hz = 32000000;
-
- switch (freq)
- {
- case 0:
- case 1:
- D(printf ("extern or disabled timer clock?\n"));
- break;
- case 4: freq_hz = 29493000; break;
- case 5: freq_hz = 32000000; break;
- case 6: freq_hz = 32768000; break;
- case 7: freq_hz = 100000000; break;
- default:
- abort();
- break;
- }
-
- D(printf ("freq_hz=%d div=%d\n", freq_hz, div));
- ptimer_set_freq(timer, freq_hz);
- ptimer_set_limit(timer, div, 0);
-
- switch (op)
- {
- case 0:
- /* Load. */
- ptimer_set_limit(timer, div, 1);
- break;
- case 1:
- /* Hold. */
- ptimer_stop(timer);
- break;
- case 2:
- /* Run. */
- ptimer_run(timer, 0);
- break;
- default:
- abort();
- break;
- }
-}
-
-static void timer_update_irq(ETRAXTimerState *t)
-{
- t->r_intr &= ~(t->rw_ack_intr);
- t->r_masked_intr = t->r_intr & t->rw_intr_mask;
-
- D(printf("%s: masked_intr=%x\n", __func__, t->r_masked_intr));
- qemu_set_irq(t->irq, !!t->r_masked_intr);
-}
-
-static void timer0_hit(void *opaque)
-{
- ETRAXTimerState *t = opaque;
- t->r_intr |= 1;
- timer_update_irq(t);
-}
-
-static void timer1_hit(void *opaque)
-{
- ETRAXTimerState *t = opaque;
- t->r_intr |= 2;
- timer_update_irq(t);
-}
-
-static void watchdog_hit(void *opaque)
-{
- ETRAXTimerState *t = opaque;
- if (t->wd_hits == 0) {
- /* real hw gives a single tick before reseting but we are
- a bit friendlier to compensate for our slower execution. */
- ptimer_set_count(t->ptimer_wd, 10);
- ptimer_run(t->ptimer_wd, 1);
- qemu_irq_raise(t->nmi);
- }
- else
- qemu_system_reset_request();
-
- t->wd_hits++;
-}
-
-static inline void timer_watchdog_update(ETRAXTimerState *t, uint32_t value)
-{
- unsigned int wd_en = t->rw_wd_ctrl & (1 << 8);
- unsigned int wd_key = t->rw_wd_ctrl >> 9;
- unsigned int wd_cnt = t->rw_wd_ctrl & 511;
- unsigned int new_key = value >> 9 & ((1 << 7) - 1);
- unsigned int new_cmd = (value >> 8) & 1;
-
- /* If the watchdog is enabled, they written key must match the
- complement of the previous. */
- wd_key = ~wd_key & ((1 << 7) - 1);
-
- if (wd_en && wd_key != new_key)
- return;
-
- D(printf("en=%d new_key=%x oldkey=%x cmd=%d cnt=%d\n",
- wd_en, new_key, wd_key, new_cmd, wd_cnt));
-
- if (t->wd_hits)
- qemu_irq_lower(t->nmi);
-
- t->wd_hits = 0;
-
- ptimer_set_freq(t->ptimer_wd, 760);
- if (wd_cnt == 0)
- wd_cnt = 256;
- ptimer_set_count(t->ptimer_wd, wd_cnt);
- if (new_cmd)
- ptimer_run(t->ptimer_wd, 1);
- else
- ptimer_stop(t->ptimer_wd);
-
- t->rw_wd_ctrl = value;
-}
-
-static void
-timer_write(void *opaque, hwaddr addr,
- uint64_t val64, unsigned int size)
-{
- ETRAXTimerState *t = opaque;
- uint32_t value = val64;
-
- switch (addr)
- {
- case RW_TMR0_DIV:
- t->rw_tmr0_div = value;
- break;
- case RW_TMR0_CTRL:
- D(printf ("RW_TMR0_CTRL=%x\n", value));
- t->rw_tmr0_ctrl = value;
- update_ctrl(t, 0);
- break;
- case RW_TMR1_DIV:
- t->rw_tmr1_div = value;
- break;
- case RW_TMR1_CTRL:
- D(printf ("RW_TMR1_CTRL=%x\n", value));
- t->rw_tmr1_ctrl = value;
- update_ctrl(t, 1);
- break;
- case RW_INTR_MASK:
- D(printf ("RW_INTR_MASK=%x\n", value));
- t->rw_intr_mask = value;
- timer_update_irq(t);
- break;
- case RW_WD_CTRL:
- timer_watchdog_update(t, value);
- break;
- case RW_ACK_INTR:
- t->rw_ack_intr = value;
- timer_update_irq(t);
- t->rw_ack_intr = 0;
- break;
- default:
- printf ("%s " TARGET_FMT_plx " %x\n",
- __func__, addr, value);
- break;
- }
-}
-
-static const MemoryRegionOps timer_ops = {
- .read = timer_read,
- .write = timer_write,
- .endianness = DEVICE_LITTLE_ENDIAN,
- .valid = {
- .min_access_size = 4,
- .max_access_size = 4
- }
-};
-
-static void etraxfs_timer_reset(void *opaque)
-{
- ETRAXTimerState *t = opaque;
-
- ptimer_stop(t->ptimer_t0);
- ptimer_stop(t->ptimer_t1);
- ptimer_stop(t->ptimer_wd);
- t->rw_wd_ctrl = 0;
- t->r_intr = 0;
- t->rw_intr_mask = 0;
- qemu_irq_lower(t->irq);
-}
-
-static int etraxfs_timer_init(SysBusDevice *dev)
-{
- ETRAXTimerState *t = ETRAX_TIMER(dev);
-
- t->bh_t0 = qemu_bh_new(timer0_hit, t);
- t->bh_t1 = qemu_bh_new(timer1_hit, t);
- t->bh_wd = qemu_bh_new(watchdog_hit, t);
- t->ptimer_t0 = ptimer_init(t->bh_t0);
- t->ptimer_t1 = ptimer_init(t->bh_t1);
- t->ptimer_wd = ptimer_init(t->bh_wd);
-
- sysbus_init_irq(dev, &t->irq);
- sysbus_init_irq(dev, &t->nmi);
-
- memory_region_init_io(&t->mmio, OBJECT(t), &timer_ops, t,
- "etraxfs-timer", 0x5c);
- sysbus_init_mmio(dev, &t->mmio);
- qemu_register_reset(etraxfs_timer_reset, t);
- return 0;
-}
-
-static void etraxfs_timer_class_init(ObjectClass *klass, void *data)
-{
- SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
-
- sdc->init = etraxfs_timer_init;
-}
-
-static const TypeInfo etraxfs_timer_info = {
- .name = TYPE_ETRAX_FS_TIMER,
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(ETRAXTimerState),
- .class_init = etraxfs_timer_class_init,
-};
-
-static void etraxfs_timer_register_types(void)
-{
- type_register_static(&etraxfs_timer_info);
-}
-
-type_init(etraxfs_timer_register_types)