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Name the magic constants, wrap long lines 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3757 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
blueswir1 2007-12-01 15:58:22 +00:00
parent d5296cb507
commit d2c38b24d1
1 changed files with 62 additions and 38 deletions
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100
hw/slavio_timer.c
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@ -69,6 +69,24 @@ typedef struct SLAVIO_TIMERState {
#define SYS_TIMER_SIZE 0x14
#define CPU_TIMER_SIZE 0x10
#define SYS_TIMER_OFFSET 0x10000ULL
#define CPU_TIMER_OFFSET(cpu) (0x1000ULL * cpu)
#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)
#define PERIODS_TO_LIMIT(l) ((l) << 9)
static int slavio_timer_is_user(SLAVIO_TIMERState *s)
{
return s->master && (s->master->slave_mode & (1 << s->slave_index));
@ -80,10 +98,10 @@ static void slavio_timer_get_out(SLAVIO_TIMERState *s)
{
uint64_t count;
count = s->limit - (ptimer_get_count(s->timer) << 9);
DPRINTF("get_out: limit %" PRIx64 " count %x%08x\n", s->limit, s->counthigh,
s->count);
s->count = count & 0xfffffe00;
count = s->limit - PERIODS_TO_LIMIT(ptimer_get_count(s->timer));
DPRINTF("get_out: limit %" PRIx64 " count %x%08x\n", s->limit,
s->counthigh, s->count);
s->count = count & TIMER_COUNT_MASK32;
s->counthigh = count >> 32;
}
@ -95,7 +113,7 @@ static void slavio_timer_irq(void *opaque)
slavio_timer_get_out(s);
DPRINTF("callback: count %x%08x\n", s->counthigh, s->count);
if (!slavio_timer_is_user(s)) {
s->reached = 0x80000000;
s->reached = TIMER_REACHED;
qemu_irq_raise(s->irq);
}
}
@ -107,7 +125,7 @@ static uint32_t slavio_timer_mem_readl(void *opaque, target_phys_addr_t addr)
saddr = (addr & TIMER_MAXADDR) >> 2;
switch (saddr) {
case 0:
case TIMER_LIMIT:
// read limit (system counter mode) or read most signifying
// part of counter (user mode)
if (slavio_timer_is_user(s)) {
@ -119,24 +137,24 @@ static uint32_t slavio_timer_mem_readl(void *opaque, target_phys_addr_t addr)
// clear irq
qemu_irq_lower(s->irq);
s->reached = 0;
ret = s->limit & 0x7fffffff;
ret = s->limit & TIMER_LIMIT_MASK32;
}
break;
case 1:
case TIMER_COUNTER:
// read counter and reached bit (system mode) or read lsbits
// of counter (user mode)
slavio_timer_get_out(s);
if (slavio_timer_is_user(s)) // read user timer LSW
ret = s->count & 0xfffffe00;
ret = s->count & TIMER_COUNT_MASK32;
else // read limit
ret = (s->count & 0x7ffffe00) | s->reached;
ret = (s->count & TIMER_MAX_COUNT32) | s->reached;
break;
case 3:
case TIMER_STATUS:
// only available in processor counter/timer
// read start/stop status
ret = s->running;
break;
case 4:
case TIMER_MODE:
// only available in system counter
// read user/system mode
ret = s->slave_mode;
@ -151,7 +169,8 @@ static uint32_t slavio_timer_mem_readl(void *opaque, target_phys_addr_t addr)
return ret;
}
static void slavio_timer_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
static void slavio_timer_mem_writel(void *opaque, target_phys_addr_t addr,
uint32_t val)
{
SLAVIO_TIMERState *s = opaque;
uint32_t saddr;
@ -160,40 +179,40 @@ static void slavio_timer_mem_writel(void *opaque, target_phys_addr_t addr, uint3
DPRINTF("write " TARGET_FMT_plx " %08x\n", addr, val);
saddr = (addr & TIMER_MAXADDR) >> 2;
switch (saddr) {
case 0:
case TIMER_LIMIT:
if (slavio_timer_is_user(s)) {
// set user counter MSW, reset counter
qemu_irq_lower(s->irq);
s->limit = 0x7ffffffffffffe00ULL;
s->limit = TIMER_MAX_COUNT64;
DPRINTF("processor %d user timer reset\n", s->slave_index);
ptimer_set_limit(s->timer, s->limit >> 9, 1);
ptimer_set_limit(s->timer, LIMIT_TO_PERIODS(s->limit), 1);
} else {
// set limit, reset counter
qemu_irq_lower(s->irq);
s->limit = val & 0x7ffffe00ULL;
s->limit = val & TIMER_MAX_COUNT32;
if (!s->limit)
s->limit = 0x7ffffe00ULL;
s->limit = TIMER_MAX_COUNT32;
ptimer_set_limit(s->timer, s->limit >> 9, 1);
}
break;
case 1:
case TIMER_COUNTER:
if (slavio_timer_is_user(s)) {
// set user counter LSW, reset counter
qemu_irq_lower(s->irq);
s->limit = 0x7ffffffffffffe00ULL;
s->limit = TIMER_MAX_COUNT64;
DPRINTF("processor %d user timer reset\n", s->slave_index);
ptimer_set_limit(s->timer, s->limit >> 9, 1);
ptimer_set_limit(s->timer, LIMIT_TO_PERIODS(s->limit), 1);
} else
DPRINTF("not user timer\n");
break;
case 2:
case TIMER_COUNTER_NORST:
// set limit without resetting counter
s->limit = val & 0x7ffffe00ULL;
s->limit = val & TIMER_MAX_COUNT32;
if (!s->limit)
s->limit = 0x7ffffe00ULL;
ptimer_set_limit(s->timer, s->limit >> 9, reload);
s->limit = TIMER_MAX_COUNT32;
ptimer_set_limit(s->timer, LIMIT_TO_PERIODS(s->limit), reload);
break;
case 3:
case TIMER_STATUS:
if (slavio_timer_is_user(s)) {
// start/stop user counter
if ((val & 1) && !s->running) {
@ -207,7 +226,7 @@ static void slavio_timer_mem_writel(void *opaque, target_phys_addr_t addr, uint3
}
}
break;
case 4:
case TIMER_MODE:
if (s->master == NULL) {
unsigned int i;
@ -218,8 +237,10 @@ static void slavio_timer_mem_writel(void *opaque, target_phys_addr_t addr, uint3
}
if ((val & (1 << i)) != (s->slave_mode & (1 << i))) {
ptimer_stop(s->slave[i]->timer);
ptimer_set_limit(s->slave[i]->timer, s->slave[i]->limit >> 9, 1);
DPRINTF("processor %d timer changed\n", s->slave[i]->slave_index);
ptimer_set_limit(s->slave[i]->timer,
LIMIT_TO_PERIODS(s->slave[i]->limit), 1);
DPRINTF("processor %d timer changed\n",
s->slave[i]->slave_index);
ptimer_run(s->slave[i]->timer, 0);
}
}
@ -284,12 +305,12 @@ static void slavio_timer_reset(void *opaque)
SLAVIO_TIMERState *s = opaque;
if (slavio_timer_is_user(s))
s->limit = 0x7ffffffffffffe00ULL;
s->limit = TIMER_MAX_COUNT64;
else
s->limit = 0x7ffffe00ULL;
s->limit = TIMER_MAX_COUNT32;
s->count = 0;
s->reached = 0;
ptimer_set_limit(s->timer, s->limit >> 9, 1);
ptimer_set_limit(s->timer, LIMIT_TO_PERIODS(s->limit), 1);
ptimer_run(s->timer, 0);
s->running = 1;
qemu_irq_lower(s->irq);
@ -312,15 +333,18 @@ static SLAVIO_TIMERState *slavio_timer_init(target_phys_addr_t addr,
s->slave_index = slave_index;
bh = qemu_bh_new(slavio_timer_irq, s);
s->timer = ptimer_init(bh);
ptimer_set_period(s->timer, 500ULL);
ptimer_set_period(s->timer, TIMER_PERIOD);
slavio_timer_io_memory = cpu_register_io_memory(0, slavio_timer_mem_read,
slavio_timer_mem_write, s);
if (master)
cpu_register_physical_memory(addr, CPU_TIMER_SIZE, slavio_timer_io_memory);
cpu_register_physical_memory(addr, CPU_TIMER_SIZE,
slavio_timer_io_memory);
else
cpu_register_physical_memory(addr, SYS_TIMER_SIZE, slavio_timer_io_memory);
register_savevm("slavio_timer", addr, 2, slavio_timer_save, slavio_timer_load, s);
cpu_register_physical_memory(addr, SYS_TIMER_SIZE,
slavio_timer_io_memory);
register_savevm("slavio_timer", addr, 2, slavio_timer_save,
slavio_timer_load, s);
qemu_register_reset(slavio_timer_reset, s);
slavio_timer_reset(s);
@ -333,11 +357,11 @@ void slavio_timer_init_all(target_phys_addr_t base, qemu_irq master_irq,
SLAVIO_TIMERState *master;
unsigned int i;
master = slavio_timer_init(base + 0x10000ULL, master_irq, NULL, 0);
master = slavio_timer_init(base + SYS_TIMER_OFFSET, master_irq, NULL, 0);
for (i = 0; i < MAX_CPUS; i++) {
master->slave[i] = slavio_timer_init(base + (target_phys_addr_t)
(i * TARGET_PAGE_SIZE),
CPU_TIMER_OFFSET(i),
cpu_irqs[i], master, i);
}
}