Some of the machine initialization for s390-virtio will be reused
by virtio-ccw.
Signed-off-by: Cornelia Huck <cornelia.huck@xxxxxxxxxx>
---
hw/s390-virtio.c | 132 +++++++++++++++++++++++++++++++++----------------------
1 file changed, 79 insertions(+), 53 deletions(-)
diff --git a/hw/s390-virtio.c b/hw/s390-virtio.c
index 685cb54..9e1afb2 100644
--- a/hw/s390-virtio.c
+++ b/hw/s390-virtio.c
@@ -151,60 +151,12 @@ unsigned s390_del_running_cpu(CPUS390XState *env)
return s390_running_cpus;
}
-/* PC hardware initialisation */
-static void s390_init(QEMUMachineInitArgs *args)
+static CPUS390XState *s390_init_cpus(const char *cpu_model,
+ uint8_t *storage_keys)
{
- ram_addr_t my_ram_size = args->ram_size;
- ram_addr_t ram_size = args->ram_size;
- const char *cpu_model = args->cpu_model;
- const char *kernel_filename = args->kernel_filename;
- const char *kernel_cmdline = args->kernel_cmdline;
- const char *initrd_filename = args->initrd_filename;
CPUS390XState *env = NULL;
- MemoryRegion *sysmem = get_system_memory();
- MemoryRegion *ram = g_new(MemoryRegion, 1);
- ram_addr_t kernel_size = 0;
- ram_addr_t initrd_offset;
- ram_addr_t initrd_size = 0;
- int shift = 0;
- uint8_t *storage_keys;
- void *virtio_region;
- hwaddr virtio_region_len;
- hwaddr virtio_region_start;
int i;
- /* s390x ram size detection needs a 16bit multiplier + an increment. So
- guests > 64GB can be specified in 2MB steps etc. */
- while ((my_ram_size >> (20 + shift)) > 65535) {
- shift++;
- }
- my_ram_size = my_ram_size >> (20 + shift) << (20 + shift);
-
- /* lets propagate the changed ram size into the global variable. */
- ram_size = my_ram_size;
-
- /* get a BUS */
- s390_bus = s390_virtio_bus_init(&my_ram_size);
- s390_sclp_init();
-
- /* allocate RAM */
- memory_region_init_ram(ram, "s390.ram", my_ram_size);
- vmstate_register_ram_global(ram);
- memory_region_add_subregion(sysmem, 0, ram);
-
- /* clear virtio region */
- virtio_region_len = my_ram_size - ram_size;
- virtio_region_start = ram_size;
- virtio_region = cpu_physical_memory_map(virtio_region_start,
- &virtio_region_len, true);
- memset(virtio_region, 0, virtio_region_len);
- cpu_physical_memory_unmap(virtio_region, virtio_region_len, 1,
- virtio_region_len);
-
- /* allocate storage keys */
- storage_keys = g_malloc0(my_ram_size / TARGET_PAGE_SIZE);
-
- /* init CPUs */
if (cpu_model == NULL) {
cpu_model = "host";
}
@@ -225,6 +177,17 @@ static void s390_init(QEMUMachineInitArgs *args)
tmp_env->exception_index = EXCP_HLT;
tmp_env->storage_keys = storage_keys;
}
+ return env;
+}
+
+static void s390_set_up_kernel(CPUS390XState *env,
+ const char *kernel_filename,
+ const char *kernel_cmdline,
+ const char *initrd_filename)
+{
+ ram_addr_t kernel_size = 0;
+ ram_addr_t initrd_offset;
+ ram_addr_t initrd_size = 0;
/* One CPU has to run */
s390_add_running_cpu(env);
@@ -296,9 +259,13 @@ static void s390_init(QEMUMachineInitArgs *args)
memcpy(rom_ptr(KERN_PARM_AREA), kernel_cmdline,
strlen(kernel_cmdline) + 1);
}
+}
- /* Create VirtIO network adapters */
- for(i = 0; i < nb_nics; i++) {
+static void s390_create_virtio_net(BusState *bus, const char *name)
+{
+ int i;
+
+ for (i = 0; i < nb_nics; i++) {
NICInfo *nd = &nd_table[i];
DeviceState *dev;
@@ -311,10 +278,69 @@ static void s390_init(QEMUMachineInitArgs *args)
exit(1);
}
- dev = qdev_create((BusState *)s390_bus, "virtio-net-s390");
+ dev = qdev_create(bus, name);
qdev_set_nic_properties(dev, nd);
qdev_init_nofail(dev);
}
+}
+
+/* PC hardware initialisation */
+static void s390_init(QEMUMachineInitArgs *args)
+{
+ ram_addr_t my_ram_size = args->ram_size;
+ ram_addr_t ram_size = args->ram_size;
+ const char *cpu_model = args->cpu_model;
+ const char *kernel_filename = args->kernel_filename;
+ const char *kernel_cmdline = args->kernel_cmdline;
+ const char *initrd_filename = args->initrd_filename;
+ CPUS390XState *env = NULL;
+ MemoryRegion *sysmem = get_system_memory();
+ MemoryRegion *ram = g_new(MemoryRegion, 1);
+ int shift = 0;
+ uint8_t *storage_keys;
+ void *virtio_region;
+ hwaddr virtio_region_len;
+ hwaddr virtio_region_start;
+ int i;
+
+ /* s390x ram size detection needs a 16bit multiplier + an increment. So
+ guests > 64GB can be specified in 2MB steps etc. */
+ while ((my_ram_size >> (20 + shift)) > 65535) {
+ shift++;
+ }
+ my_ram_size = my_ram_size >> (20 + shift) << (20 + shift);
+
+ /* lets propagate the changed ram size into the global variable. */
+ ram_size = my_ram_size;
+
+ /* get a BUS */
+ s390_bus = s390_virtio_bus_init(&my_ram_size);
+ s390_sclp_init();
+
+ /* allocate RAM */
+ memory_region_init_ram(ram, "s390.ram", my_ram_size);
+ vmstate_register_ram_global(ram);
+ memory_region_add_subregion(sysmem, 0, ram);
+
+ /* clear virtio region */
+ virtio_region_len = my_ram_size - ram_size;
+ virtio_region_start = ram_size;
+ virtio_region = cpu_physical_memory_map(virtio_region_start,
+ &virtio_region_len, true);
+ memset(virtio_region, 0, virtio_region_len);
+ cpu_physical_memory_unmap(virtio_region, virtio_region_len, 1,
+ virtio_region_len);
+
+ /* allocate storage keys */
+ storage_keys = g_malloc0(my_ram_size / TARGET_PAGE_SIZE);
+
+ /* init CPUs */
+ env = s390_init_cpus(cpu_model, storage_keys);
+
+ s390_set_up_kernel(env, kernel_filename, kernel_cmdline, initrd_filename);
+
+ /* Create VirtIO network adapters */
+ s390_create_virtio_net((BusState *)s390_bus, "virtio-net-s390");
/* Create VirtIO disk drives */
for(i = 0; i < MAX_BLK_DEVS; i++) {
--
1.7.12.4
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