aboutsummaryrefslogtreecommitdiff
path: root/hw/s390-virtio.c
diff options
context:
space:
mode:
Diffstat (limited to 'hw/s390-virtio.c')
-rw-r--r--hw/s390-virtio.c354
1 files changed, 0 insertions, 354 deletions
diff --git a/hw/s390-virtio.c b/hw/s390-virtio.c
deleted file mode 100644
index ca1bb09..0000000
--- a/hw/s390-virtio.c
+++ /dev/null
@@ -1,354 +0,0 @@
-/*
- * 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"
-#include "hw/s390x/sclp.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 S390CPU **ipi_states;
-
-S390CPU *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);
- s390_virtio_reset_idx(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(QEMUMachineInitArgs *args)
-{
- ram_addr_t my_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";
- }
-
- ipi_states = g_malloc(sizeof(S390CPU *) * smp_cpus);
-
- for (i = 0; i < smp_cpus; i++) {
- S390CPU *cpu;
- CPUS390XState *tmp_env;
-
- cpu = cpu_s390x_init(cpu_model);
- tmp_env = &cpu->env;
- if (!env) {
- env = tmp_env;
- }
- ipi_states[i] = cpu;
- 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);
- }
- if (kernel_size == -1UL) {
- fprintf(stderr, "qemu: could not load kernel '%s'\n",
- kernel_filename);
- exit(1);
- }
- /*
- * 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);
- if (initrd_size == -1UL) {
- fprintf(stderr, "qemu: could not load initrd '%s'\n",
- initrd_filename);
- exit(1);
- }
-
- /* we have to overwrite values in the kernel image, which are "rom" */
- stq_p(rom_ptr(INITRD_PARM_START), initrd_offset);
- stq_p(rom_ptr(INITRD_PARM_SIZE), initrd_size);
- }
-
- if (rom_ptr(KERN_PARM_AREA)) {
- /* 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_cdrom = 1,
- .no_floppy = 1,
- .no_serial = 1,
- .no_parallel = 1,
- .no_sdcard = 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);
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-21 21:09:05 +0000