diff options
Diffstat (limited to 'hw/sun4m.c')
| -rw-r--r-- | hw/sun4m.c | 49 |
1 files changed, 45 insertions, 4 deletions
diff --git a/hw/sun4m.c b/hw/sun4m.c index ed3be4e1d0..c69d732f91 100644 --- a/hw/sun4m.c +++ b/hw/sun4m.c @@ -22,6 +22,7 @@ * THE SOFTWARE. */ #include "vl.h" +//#define DEBUG_IRQ /* * Sun4m architecture was used in the following machines: @@ -38,6 +39,13 @@ * See for example: http://www.sunhelp.org/faq/sunref1.html */ +#ifdef DEBUG_IRQ +#define DPRINTF(fmt, args...) \ + do { printf("CPUIRQ: " fmt , ##args); } while (0) +#else +#define DPRINTF(fmt, args...) +#endif + #define KERNEL_LOAD_ADDR 0x00004000 #define CMDLINE_ADDR 0x007ff000 #define INITRD_LOAD_ADDR 0x00800000 @@ -46,6 +54,7 @@ #define PROM_FILENAME "openbios-sparc32" #define MAX_CPUS 16 +#define MAX_PILS 16 struct hwdef { target_phys_addr_t iommu_base, slavio_base; @@ -233,6 +242,33 @@ void irq_info() slavio_irq_info(slavio_intctl); } +static void cpu_set_irq(void *opaque, int irq, int level) +{ + CPUState *env = opaque; + + if (level) { + DPRINTF("Raise CPU IRQ %d\n", irq); + + env->halted = 0; + + if (env->interrupt_index == 0 || + ((env->interrupt_index & ~15) == TT_EXTINT && + (env->interrupt_index & 15) < irq)) { + env->interrupt_index = TT_EXTINT | irq; + cpu_interrupt(env, CPU_INTERRUPT_HARD); + } else { + DPRINTF("Not triggered, pending exception %d\n", + env->interrupt_index); + } + } else { + DPRINTF("Lower CPU IRQ %d\n", irq); + } +} + +static void dummy_cpu_set_irq(void *opaque, int irq, int level) +{ +} + static void *slavio_misc; void qemu_system_powerdown(void) @@ -264,7 +300,7 @@ static void sun4m_hw_init(const struct hwdef *hwdef, int ram_size, unsigned int i; void *iommu, *espdma, *ledma, *main_esp; const sparc_def_t *def; - qemu_irq *slavio_irq, *slavio_cpu_irq, + qemu_irq *cpu_irqs[MAX_CPUS], *slavio_irq, *slavio_cpu_irq, *espdma_irq, *ledma_irq; /* init CPUs */ @@ -273,6 +309,7 @@ static void sun4m_hw_init(const struct hwdef *hwdef, int ram_size, fprintf(stderr, "Unable to find Sparc CPU definition\n"); exit(1); } + for(i = 0; i < smp_cpus; i++) { env = cpu_init(); cpu_sparc_register(env, def); @@ -284,7 +321,12 @@ static void sun4m_hw_init(const struct hwdef *hwdef, int ram_size, env->halted = 1; } register_savevm("cpu", i, 3, cpu_save, cpu_load, env); + cpu_irqs[i] = qemu_allocate_irqs(cpu_set_irq, envs[i], MAX_PILS); } + + for (i = smp_cpus; i < MAX_CPUS; i++) + cpu_irqs[i] = qemu_allocate_irqs(dummy_cpu_set_irq, NULL, MAX_PILS); + /* allocate RAM */ cpu_register_physical_memory(0, ram_size, 0); @@ -293,10 +335,9 @@ static void sun4m_hw_init(const struct hwdef *hwdef, int ram_size, hwdef->intctl_base + 0x10000ULL, &hwdef->intbit_to_level[0], &slavio_irq, &slavio_cpu_irq, + cpu_irqs, hwdef->clock_irq); - for(i = 0; i < smp_cpus; i++) { - slavio_intctl_set_cpu(slavio_intctl, i, envs[i]); - } + espdma = sparc32_dma_init(hwdef->dma_base, slavio_irq[hwdef->esp_irq], iommu, &espdma_irq); ledma = sparc32_dma_init(hwdef->dma_base + 16ULL, |