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Initial SPARC SMP support (Blue Swirl)

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1694 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-12-05 20:31:52 +00:00
parent b9788fc4c4
commit ba3c64fb47
12 changed files with 196 additions and 54 deletions
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25
hw/slavio_timer.c
View file

@ -42,6 +42,9 @@ do { printf("TIMER: " fmt , ##args); } while (0)
* 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.
*
*/
typedef struct SLAVIO_TIMERState {
@ -53,11 +56,11 @@ typedef struct SLAVIO_TIMERState {
int irq;
int reached, stopped;
int mode; // 0 = processor, 1 = user, 2 = system
unsigned int cpu;
} SLAVIO_TIMERState;
#define TIMER_MAXADDR 0x1f
#define CNT_FREQ 2000000
#define MAX_CPUS 16
// Update count, set irq, update expire_time
static void slavio_timer_get_out(SLAVIO_TIMERState *s)
@ -73,7 +76,7 @@ static void slavio_timer_get_out(SLAVIO_TIMERState *s)
else
ticks = qemu_get_clock(vm_clock) - s->tick_offset;
out = (ticks >= s->expire_time);
out = (ticks > s->expire_time);
if (out)
s->reached = 0x80000000;
if (!s->limit)
@ -100,7 +103,7 @@ static void slavio_timer_get_out(SLAVIO_TIMERState *s)
DPRINTF("irq %d limit %d reached %d d %lld count %d s->c %x diff %lld stopped %d mode %d\n", s->irq, limit, s->reached?1:0, (ticks-s->count_load_time), count, s->count, s->expire_time - ticks, s->stopped, s->mode);
if (s->mode != 1)
pic_set_irq(s->irq, out);
pic_set_irq_cpu(s->irq, out, s->cpu);
}
// timer callback
@ -127,7 +130,7 @@ static uint32_t slavio_timer_mem_readl(void *opaque, target_phys_addr_t addr)
// part of counter (user mode)
if (s->mode != 1) {
// clear irq
pic_set_irq(s->irq, 0);
pic_set_irq_cpu(s->irq, 0, s->cpu);
s->count_load_time = qemu_get_clock(vm_clock);
s->reached = 0;
return s->limit;
@ -263,7 +266,7 @@ static void slavio_timer_reset(void *opaque)
slavio_timer_get_out(s);
}
static void slavio_timer_init_internal(uint32_t addr, int irq, int mode)
void slavio_timer_init(uint32_t addr, int irq, int mode, unsigned int cpu)
{
int slavio_timer_io_memory;
SLAVIO_TIMERState *s;
@ -273,6 +276,7 @@ static void slavio_timer_init_internal(uint32_t addr, int irq, int mode)
return;
s->irq = irq;
s->mode = mode;
s->cpu = cpu;
s->irq_timer = qemu_new_timer(vm_clock, slavio_timer_irq, s);
slavio_timer_io_memory = cpu_register_io_memory(0, slavio_timer_mem_read,
@ -282,14 +286,3 @@ static void slavio_timer_init_internal(uint32_t addr, int irq, int mode)
qemu_register_reset(slavio_timer_reset, s);
slavio_timer_reset(s);
}
void slavio_timer_init(uint32_t addr1, int irq1, uint32_t addr2, int irq2)
{
int i;
for (i = 0; i < MAX_CPUS; i++) {
slavio_timer_init_internal(addr1 + i * TARGET_PAGE_SIZE, irq1, 0);
}
slavio_timer_init_internal(addr2, irq2, 2);
}