Scripted conversion: for file in hw/s390-*.[hc]; do sed -i "s/CPUState/CPUS390XState/g" $file done Signed-off-by: Andreas Färber <afaerber@suse.de> Acked-by: Anthony Liguori <aliguori@us.ibm.com>
336 lines
9.5 KiB
C
336 lines
9.5 KiB
C
/*
|
|
* QEMU S390 virtio target
|
|
*
|
|
* Copyright (c) 2009 Alexander Graf <agraf@suse.de>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "hw.h"
|
|
#include "block.h"
|
|
#include "blockdev.h"
|
|
#include "sysemu.h"
|
|
#include "net.h"
|
|
#include "boards.h"
|
|
#include "monitor.h"
|
|
#include "loader.h"
|
|
#include "elf.h"
|
|
#include "hw/virtio.h"
|
|
#include "hw/sysbus.h"
|
|
#include "kvm.h"
|
|
#include "exec-memory.h"
|
|
|
|
#include "hw/s390-virtio-bus.h"
|
|
|
|
//#define DEBUG_S390
|
|
|
|
#ifdef DEBUG_S390
|
|
#define dprintf(fmt, ...) \
|
|
do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
|
|
#else
|
|
#define dprintf(fmt, ...) \
|
|
do { } while (0)
|
|
#endif
|
|
|
|
#define KVM_S390_VIRTIO_NOTIFY 0
|
|
#define KVM_S390_VIRTIO_RESET 1
|
|
#define KVM_S390_VIRTIO_SET_STATUS 2
|
|
|
|
#define KERN_IMAGE_START 0x010000UL
|
|
#define KERN_PARM_AREA 0x010480UL
|
|
#define INITRD_START 0x800000UL
|
|
#define INITRD_PARM_START 0x010408UL
|
|
#define INITRD_PARM_SIZE 0x010410UL
|
|
#define PARMFILE_START 0x001000UL
|
|
|
|
#define ZIPL_START 0x009000UL
|
|
#define ZIPL_LOAD_ADDR 0x009000UL
|
|
#define ZIPL_FILENAME "s390-zipl.rom"
|
|
|
|
#define MAX_BLK_DEVS 10
|
|
|
|
static VirtIOS390Bus *s390_bus;
|
|
static CPUS390XState **ipi_states;
|
|
|
|
CPUS390XState *s390_cpu_addr2state(uint16_t cpu_addr)
|
|
{
|
|
if (cpu_addr >= smp_cpus) {
|
|
return NULL;
|
|
}
|
|
|
|
return ipi_states[cpu_addr];
|
|
}
|
|
|
|
int s390_virtio_hypercall(CPUS390XState *env, uint64_t mem, uint64_t hypercall)
|
|
{
|
|
int r = 0, i;
|
|
|
|
dprintf("KVM hypercall: %ld\n", hypercall);
|
|
switch (hypercall) {
|
|
case KVM_S390_VIRTIO_NOTIFY:
|
|
if (mem > ram_size) {
|
|
VirtIOS390Device *dev = s390_virtio_bus_find_vring(s390_bus,
|
|
mem, &i);
|
|
if (dev) {
|
|
virtio_queue_notify(dev->vdev, i);
|
|
} else {
|
|
r = -EINVAL;
|
|
}
|
|
} else {
|
|
/* Early printk */
|
|
}
|
|
break;
|
|
case KVM_S390_VIRTIO_RESET:
|
|
{
|
|
VirtIOS390Device *dev;
|
|
|
|
dev = s390_virtio_bus_find_mem(s390_bus, mem);
|
|
virtio_reset(dev->vdev);
|
|
stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_STATUS, 0);
|
|
s390_virtio_device_sync(dev);
|
|
break;
|
|
}
|
|
case KVM_S390_VIRTIO_SET_STATUS:
|
|
{
|
|
VirtIOS390Device *dev;
|
|
|
|
dev = s390_virtio_bus_find_mem(s390_bus, mem);
|
|
if (dev) {
|
|
s390_virtio_device_update_status(dev);
|
|
} else {
|
|
r = -EINVAL;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
r = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
/*
|
|
* The number of running CPUs. On s390 a shutdown is the state of all CPUs
|
|
* being either stopped or disabled (for interrupts) waiting. We have to
|
|
* track this number to call the shutdown sequence accordingly. This
|
|
* number is modified either on startup or while holding the big qemu lock.
|
|
*/
|
|
static unsigned s390_running_cpus;
|
|
|
|
void s390_add_running_cpu(CPUS390XState *env)
|
|
{
|
|
if (env->halted) {
|
|
s390_running_cpus++;
|
|
env->halted = 0;
|
|
env->exception_index = -1;
|
|
}
|
|
}
|
|
|
|
unsigned s390_del_running_cpu(CPUS390XState *env)
|
|
{
|
|
if (env->halted == 0) {
|
|
assert(s390_running_cpus >= 1);
|
|
s390_running_cpus--;
|
|
env->halted = 1;
|
|
env->exception_index = EXCP_HLT;
|
|
}
|
|
return s390_running_cpus;
|
|
}
|
|
|
|
/* PC hardware initialisation */
|
|
static void s390_init(ram_addr_t my_ram_size,
|
|
const char *boot_device,
|
|
const char *kernel_filename,
|
|
const char *kernel_cmdline,
|
|
const char *initrd_filename,
|
|
const char *cpu_model)
|
|
{
|
|
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;
|
|
target_phys_addr_t virtio_region_len;
|
|
target_phys_addr_t 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);
|
|
|
|
/* 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";
|
|
}
|
|
|
|
ipi_states = g_malloc(sizeof(CPUS390XState *) * smp_cpus);
|
|
|
|
for (i = 0; i < smp_cpus; i++) {
|
|
CPUS390XState *tmp_env;
|
|
|
|
tmp_env = cpu_init(cpu_model);
|
|
if (!env) {
|
|
env = tmp_env;
|
|
}
|
|
ipi_states[i] = tmp_env;
|
|
tmp_env->halted = 1;
|
|
tmp_env->exception_index = EXCP_HLT;
|
|
tmp_env->storage_keys = storage_keys;
|
|
}
|
|
|
|
/* One CPU has to run */
|
|
s390_add_running_cpu(env);
|
|
|
|
if (kernel_filename) {
|
|
|
|
kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, NULL,
|
|
NULL, 1, ELF_MACHINE, 0);
|
|
if (kernel_size == -1UL) {
|
|
kernel_size = load_image_targphys(kernel_filename, 0, ram_size);
|
|
}
|
|
/*
|
|
* we can not rely on the ELF entry point, since up to 3.2 this
|
|
* value was 0x800 (the SALIPL loader) and it wont work. For
|
|
* all (Linux) cases 0x10000 (KERN_IMAGE_START) should be fine.
|
|
*/
|
|
env->psw.addr = KERN_IMAGE_START;
|
|
env->psw.mask = 0x0000000180000000ULL;
|
|
} else {
|
|
ram_addr_t bios_size = 0;
|
|
char *bios_filename;
|
|
|
|
/* Load zipl bootloader */
|
|
if (bios_name == NULL) {
|
|
bios_name = ZIPL_FILENAME;
|
|
}
|
|
|
|
bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
|
|
bios_size = load_image_targphys(bios_filename, ZIPL_LOAD_ADDR, 4096);
|
|
g_free(bios_filename);
|
|
|
|
if ((long)bios_size < 0) {
|
|
hw_error("could not load bootloader '%s'\n", bios_name);
|
|
}
|
|
|
|
if (bios_size > 4096) {
|
|
hw_error("stage1 bootloader is > 4k\n");
|
|
}
|
|
|
|
env->psw.addr = ZIPL_START;
|
|
env->psw.mask = 0x0000000180000000ULL;
|
|
}
|
|
|
|
if (initrd_filename) {
|
|
initrd_offset = INITRD_START;
|
|
while (kernel_size + 0x100000 > initrd_offset) {
|
|
initrd_offset += 0x100000;
|
|
}
|
|
initrd_size = load_image_targphys(initrd_filename, initrd_offset,
|
|
ram_size - initrd_offset);
|
|
/* we have to overwrite values in the kernel image, which are "rom" */
|
|
memcpy(rom_ptr(INITRD_PARM_START), &initrd_offset, 8);
|
|
memcpy(rom_ptr(INITRD_PARM_SIZE), &initrd_size, 8);
|
|
}
|
|
|
|
if (kernel_cmdline) {
|
|
/* we have to overwrite values in the kernel image, which are "rom" */
|
|
memcpy(rom_ptr(KERN_PARM_AREA), kernel_cmdline,
|
|
strlen(kernel_cmdline) + 1);
|
|
}
|
|
|
|
/* Create VirtIO network adapters */
|
|
for(i = 0; i < nb_nics; i++) {
|
|
NICInfo *nd = &nd_table[i];
|
|
DeviceState *dev;
|
|
|
|
if (!nd->model) {
|
|
nd->model = g_strdup("virtio");
|
|
}
|
|
|
|
if (strcmp(nd->model, "virtio")) {
|
|
fprintf(stderr, "S390 only supports VirtIO nics\n");
|
|
exit(1);
|
|
}
|
|
|
|
dev = qdev_create((BusState *)s390_bus, "virtio-net-s390");
|
|
qdev_set_nic_properties(dev, nd);
|
|
qdev_init_nofail(dev);
|
|
}
|
|
|
|
/* Create VirtIO disk drives */
|
|
for(i = 0; i < MAX_BLK_DEVS; i++) {
|
|
DriveInfo *dinfo;
|
|
DeviceState *dev;
|
|
|
|
dinfo = drive_get(IF_IDE, 0, i);
|
|
if (!dinfo) {
|
|
continue;
|
|
}
|
|
|
|
dev = qdev_create((BusState *)s390_bus, "virtio-blk-s390");
|
|
qdev_prop_set_drive_nofail(dev, "drive", dinfo->bdrv);
|
|
qdev_init_nofail(dev);
|
|
}
|
|
}
|
|
|
|
static QEMUMachine s390_machine = {
|
|
.name = "s390-virtio",
|
|
.alias = "s390",
|
|
.desc = "VirtIO based S390 machine",
|
|
.init = s390_init,
|
|
.no_serial = 1,
|
|
.no_parallel = 1,
|
|
.use_virtcon = 1,
|
|
.max_cpus = 255,
|
|
.is_default = 1,
|
|
};
|
|
|
|
static void s390_machine_init(void)
|
|
{
|
|
qemu_register_machine(&s390_machine);
|
|
}
|
|
|
|
machine_init(s390_machine_init);
|