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hw/openrisc/openrisc_sim: Abstract out "get IRQ x of CPU y"

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We're about to refactor the OpenRISC pic_cpu code in a way that means
that just grabbing the whole qemu_irq[] array of inbound IRQs for a
CPU won't be possible any more.  Abstract out a function for "return
the qemu_irq for IRQ x input of CPU y" so we can more easily replace
the implementation.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Stafford Horne <shorne@gmail.com>
Message-id: 20201127225127.14770-3-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2020-11-27 22:51:26 +00:00
parent 1eeffbeb11
commit eaca43a0f7
1 changed files with 21 additions and 17 deletions
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38
hw/openrisc/openrisc_sim.c
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@ -52,8 +52,13 @@ static void main_cpu_reset(void *opaque)
cpu_set_pc(cs, boot_info.bootstrap_pc);
}
static qemu_irq get_cpu_irq(OpenRISCCPU *cpus[], int cpunum, int irq_pin)
{
return cpus[cpunum]->env.irq[irq_pin];
}
static void openrisc_sim_net_init(hwaddr base, hwaddr descriptors,
int num_cpus, qemu_irq **cpu_irqs,
int num_cpus, OpenRISCCPU *cpus[],
int irq_pin, NICInfo *nd)
{
DeviceState *dev;
@ -70,18 +75,18 @@ static void openrisc_sim_net_init(hwaddr base, hwaddr descriptors,
qdev_prop_set_uint32(splitter, "num-lines", num_cpus);
qdev_realize_and_unref(splitter, NULL, &error_fatal);
for (i = 0; i < num_cpus; i++) {
qdev_connect_gpio_out(splitter, i, cpu_irqs[i][irq_pin]);
qdev_connect_gpio_out(splitter, i, get_cpu_irq(cpus, i, irq_pin));
}
sysbus_connect_irq(s, 0, qdev_get_gpio_in(splitter, 0));
} else {
sysbus_connect_irq(s, 0, cpu_irqs[0][irq_pin]);
sysbus_connect_irq(s, 0, get_cpu_irq(cpus, 0, irq_pin));
}
sysbus_mmio_map(s, 0, base);
sysbus_mmio_map(s, 1, descriptors);
}
static void openrisc_sim_ompic_init(hwaddr base, int num_cpus,
qemu_irq **cpu_irqs, int irq_pin)
OpenRISCCPU *cpus[], int irq_pin)
{
DeviceState *dev;
SysBusDevice *s;
@ -93,7 +98,7 @@ static void openrisc_sim_ompic_init(hwaddr base, int num_cpus,
s = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(s, &error_fatal);
for (i = 0; i < num_cpus; i++) {
sysbus_connect_irq(s, i, cpu_irqs[i][irq_pin]);
sysbus_connect_irq(s, i, get_cpu_irq(cpus, i, irq_pin));
}
sysbus_mmio_map(s, 0, base);
}
@ -136,26 +141,24 @@ static void openrisc_sim_init(MachineState *machine)
{
ram_addr_t ram_size = machine->ram_size;
const char *kernel_filename = machine->kernel_filename;
OpenRISCCPU *cpu = NULL;
OpenRISCCPU *cpus[2] = {};
MemoryRegion *ram;
qemu_irq *cpu_irqs[2];
qemu_irq serial_irq;
int n;
unsigned int smp_cpus = machine->smp.cpus;
assert(smp_cpus >= 1 && smp_cpus <= 2);
for (n = 0; n < smp_cpus; n++) {
cpu = OPENRISC_CPU(cpu_create(machine->cpu_type));
if (cpu == NULL) {
cpus[n] = OPENRISC_CPU(cpu_create(machine->cpu_type));
if (cpus[n] == NULL) {
fprintf(stderr, "Unable to find CPU definition!\n");
exit(1);
}
cpu_openrisc_pic_init(cpu);
cpu_irqs[n] = (qemu_irq *) cpu->env.irq;
cpu_openrisc_pic_init(cpus[n]);
cpu_openrisc_clock_init(cpu);
cpu_openrisc_clock_init(cpus[n]);
qemu_register_reset(main_cpu_reset, cpu);
qemu_register_reset(main_cpu_reset, cpus[n]);
}
ram = g_malloc(sizeof(*ram));
@ -164,15 +167,16 @@ static void openrisc_sim_init(MachineState *machine)
if (nd_table[0].used) {
openrisc_sim_net_init(0x92000000, 0x92000400, smp_cpus,
cpu_irqs, 4, nd_table);
cpus, 4, nd_table);
}
if (smp_cpus > 1) {
openrisc_sim_ompic_init(0x98000000, smp_cpus, cpu_irqs, 1);
openrisc_sim_ompic_init(0x98000000, smp_cpus, cpus, 1);
serial_irq = qemu_irq_split(cpu_irqs[0][2], cpu_irqs[1][2]);
serial_irq = qemu_irq_split(get_cpu_irq(cpus, 0, 2),
get_cpu_irq(cpus, 1, 2));
} else {
serial_irq = cpu_irqs[0][2];
serial_irq = get_cpu_irq(cpus, 0, 2);
}
serial_mm_init(get_system_memory(), 0x90000000, 0, serial_irq,