From patchwork Tue Sep 4 15:13:51 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cornelia Huck X-Patchwork-Id: 1402971 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 2F96EDF280 for ; Tue, 4 Sep 2012 15:15:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932466Ab2IDPOx (ORCPT ); Tue, 4 Sep 2012 11:14:53 -0400 Received: from e06smtp16.uk.ibm.com ([195.75.94.112]:45726 "EHLO e06smtp16.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932450Ab2IDPOF (ORCPT ); Tue, 4 Sep 2012 11:14:05 -0400 Received: from /spool/local by e06smtp16.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Tue, 4 Sep 2012 16:13:59 +0100 Received: from d06av06.portsmouth.uk.ibm.com (d06av06.portsmouth.uk.ibm.com [9.149.37.217]) by b06cxnps4075.portsmouth.uk.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id q84FDphF40763602; Tue, 4 Sep 2012 15:13:51 GMT Received: from d06av06.portsmouth.uk.ibm.com (loopback [127.0.0.1]) by d06av06.portsmouth.uk.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id q84FDu09029094; Tue, 4 Sep 2012 09:13:57 -0600 Received: from tuxmaker.boeblingen.de.ibm.com (tuxmaker.boeblingen.de.ibm.com [9.152.85.9]) by d06av06.portsmouth.uk.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id q84FDraT028933; Tue, 4 Sep 2012 09:13:55 -0600 From: Cornelia Huck To: KVM , linux-s390 , qemu-devel Cc: Avi Kivity , Marcelo Tosatti , Anthony Liguori , Rusty Russell , Christian Borntraeger , Carsten Otte , Alexander Graf , Heiko Carstens , Martin Schwidefsky , Sebastian Ott Subject: [PATCH v2 3/5] s390: Add new channel I/O based virtio transport. Date: Tue, 4 Sep 2012 17:13:51 +0200 Message-Id: <1346771633-53081-4-git-send-email-cornelia.huck@de.ibm.com> X-Mailer: git-send-email 1.7.11.5 In-Reply-To: <1346771633-53081-1-git-send-email-cornelia.huck@de.ibm.com> References: <1346771633-53081-1-git-send-email-cornelia.huck@de.ibm.com> x-cbid: 12090415-3548-0000-0000-000003038327 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Add a new virtio transport that uses channel commands to perform virtio operations. Add a new machine type s390-ccw that uses this virtio-ccw transport and make it the default machine for s390. Signed-off-by: Cornelia Huck --- Changes v1->v2: - update to virtio-ccw interface changes --- hw/qdev-monitor.c | 5 + hw/s390-virtio.c | 277 ++++++++++++---- hw/s390x/Makefile.objs | 1 + hw/s390x/css.c | 45 +++ hw/s390x/css.h | 3 + hw/s390x/virtio-ccw.c | 875 +++++++++++++++++++++++++++++++++++++++++++++++++ hw/s390x/virtio-ccw.h | 79 +++++ vl.c | 1 + 8 files changed, 1215 insertions(+), 71 deletions(-) create mode 100644 hw/s390x/virtio-ccw.c create mode 100644 hw/s390x/virtio-ccw.h diff --git a/hw/qdev-monitor.c b/hw/qdev-monitor.c index 33b7f79..92b7c59 100644 --- a/hw/qdev-monitor.c +++ b/hw/qdev-monitor.c @@ -42,6 +42,11 @@ static const QDevAlias qdev_alias_table[] = { { "virtio-blk-s390", "virtio-blk", QEMU_ARCH_S390X }, { "virtio-net-s390", "virtio-net", QEMU_ARCH_S390X }, { "virtio-serial-s390", "virtio-serial", QEMU_ARCH_S390X }, + { "virtio-blk-ccw", "virtio-blk", QEMU_ARCH_S390X }, + { "virtio-net-ccw", "virtio-net", QEMU_ARCH_S390X }, + { "virtio-serial-ccw", "virtio-serial", QEMU_ARCH_S390X }, + { "virtio-balloon-ccw", "virtio-balloon", QEMU_ARCH_S390X }, + { "virtio-scsi-ccw", "virtio-scsi", QEMU_ARCH_S390X }, { "lsi53c895a", "lsi" }, { "ich9-ahci", "ahci" }, { } diff --git a/hw/s390-virtio.c b/hw/s390-virtio.c index 47eed35..2509291 100644 --- a/hw/s390-virtio.c +++ b/hw/s390-virtio.c @@ -30,8 +30,11 @@ #include "hw/sysbus.h" #include "kvm.h" #include "exec-memory.h" +#include "qemu-thread.h" #include "hw/s390-virtio-bus.h" +#include "hw/s390x/css.h" +#include "hw/s390x/virtio-ccw.h" //#define DEBUG_S390 @@ -46,6 +49,7 @@ #define KVM_S390_VIRTIO_NOTIFY 0 #define KVM_S390_VIRTIO_RESET 1 #define KVM_S390_VIRTIO_SET_STATUS 2 +#define KVM_S390_VIRTIO_CCW_NOTIFY 3 #define KERN_IMAGE_START 0x010000UL #define KERN_PARM_AREA 0x010480UL @@ -62,6 +66,7 @@ static VirtIOS390Bus *s390_bus; static S390CPU **ipi_states; +VirtioCcwBus *ccw_bus; S390CPU *s390_cpu_addr2state(uint16_t cpu_addr) { @@ -75,15 +80,21 @@ S390CPU *s390_cpu_addr2state(uint16_t cpu_addr) int s390_virtio_hypercall(CPUS390XState *env, uint64_t mem, uint64_t hypercall) { int r = 0, i; + int cssid, ssid, schid, m; + SubchDev *sch; 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); + if (s390_bus) { + VirtIOS390Device *dev = s390_virtio_bus_find_vring(s390_bus, + mem, &i); + if (dev) { + virtio_queue_notify(dev->vdev, i); + } else { + r = -EINVAL; + } } else { r = -EINVAL; } @@ -92,28 +103,49 @@ int s390_virtio_hypercall(CPUS390XState *env, uint64_t mem, uint64_t hypercall) } 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); + if (s390_bus) { + 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); + } else { + r = -EINVAL; + } break; - } case KVM_S390_VIRTIO_SET_STATUS: - { - VirtIOS390Device *dev; + if (s390_bus) { + VirtIOS390Device *dev; - dev = s390_virtio_bus_find_mem(s390_bus, mem); - if (dev) { - s390_virtio_device_update_status(dev); + dev = s390_virtio_bus_find_mem(s390_bus, mem); + if (dev) { + s390_virtio_device_update_status(dev); + } else { + r = -EINVAL; + } } else { r = -EINVAL; } break; - } + case KVM_S390_VIRTIO_CCW_NOTIFY: + if (ccw_bus) { + if (ioinst_disassemble_sch_ident(env->regs[2], &m, &cssid, &ssid, + &schid)) { + r = -EINVAL; + } else { + sch = css_find_subch(m, cssid, ssid, schid); + if (sch) { + virtio_queue_notify(virtio_ccw_get_vdev(sch), env->regs[3]); + } else { + r = -EINVAL; + } + } + } else { + r = -EINVAL; + } + break; default: r = -EINVAL; break; @@ -150,58 +182,12 @@ unsigned s390_del_running_cpu(CPUS390XState *env) 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) +static CPUS390XState *s390_init_cpus(const char *cpu_model, + uint8_t *storage_keys) { 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"; } @@ -222,6 +208,17 @@ static void s390_init(ram_addr_t my_ram_size, 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); @@ -294,8 +291,13 @@ static void s390_init(ram_addr_t my_ram_size, 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; @@ -308,7 +310,7 @@ static void s390_init(ram_addr_t my_ram_size, 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); } @@ -329,6 +331,63 @@ static void s390_init(ram_addr_t my_ram_size, } } +/* 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); + int shift = 0; + uint8_t *storage_keys; + void *virtio_region; + target_phys_addr_t virtio_region_len; + target_phys_addr_t virtio_region_start; + + /* 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 */ + 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"); + +} + static QEMUMachine s390_machine = { .name = "s390-virtio", .alias = "s390", @@ -341,7 +400,6 @@ static QEMUMachine s390_machine = { .no_sdcard = 1, .use_virtcon = 1, .max_cpus = 255, - .is_default = 1, }; static void s390_machine_init(void) @@ -350,3 +408,80 @@ static void s390_machine_init(void) } machine_init(s390_machine_init); + +static void ccw_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); + int shift = 0; + uint8_t *storage_keys; + int ret; + + /* 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 */ + ccw_bus = virtio_ccw_bus_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); + + /* allocate storage keys */ + storage_keys = g_malloc0(my_ram_size / TARGET_PAGE_SIZE); + + /* init CPUs */ + env = s390_init_cpus(cpu_model, storage_keys); + + kvm_s390_enable_css_support(env); + + /* + * Create virtual css and set it as default so that non mcss-e + * enabled guests only see virtio devices. + */ + ret = css_create_css_image(VIRTUAL_CSSID, true); + assert(ret == 0); + + + s390_set_up_kernel(env, kernel_filename, kernel_cmdline, initrd_filename); + + /* Create VirtIO network adapters */ + s390_create_virtio_net((BusState *)ccw_bus, "virtio-net-ccw"); + +} + +static QEMUMachine ccw_machine = { + .name = "s390-ccw-virtio", + .alias = "s390-ccw", + .desc = "VirtIO-ccw based S390 machine", + .init = ccw_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 ccw_machine_init(void) +{ + qemu_register_machine(&ccw_machine); +} + +machine_init(ccw_machine_init); diff --git a/hw/s390x/Makefile.objs b/hw/s390x/Makefile.objs index 93b41fb..e4c3d6f 100644 --- a/hw/s390x/Makefile.objs +++ b/hw/s390x/Makefile.objs @@ -2,3 +2,4 @@ obj-y = s390-virtio-bus.o s390-virtio.o obj-y := $(addprefix ../,$(obj-y)) obj-y += css.o +obj-y += virtio-ccw.o diff --git a/hw/s390x/css.c b/hw/s390x/css.c index b9b6e48..a671e28 100644 --- a/hw/s390x/css.c +++ b/hw/s390x/css.c @@ -441,6 +441,51 @@ SubchDev *css_find_subch(uint8_t m, uint8_t cssid, uint8_t ssid, uint16_t schid) return channel_subsys->css[real_cssid]->sch_set[ssid]->sch[schid]; } +bool css_devno_used(uint8_t cssid, uint8_t ssid, uint16_t devno) +{ + if (!channel_subsys->css[cssid]) { + return false; + } + if (!channel_subsys->css[cssid]->sch_set[ssid]) { + return false; + } + + return !!test_bit(devno, + channel_subsys->css[cssid]->sch_set[ssid]->devnos_used); +} + +void css_subch_assign(uint8_t cssid, uint8_t ssid, uint16_t schid, uint16_t devno, + SubchDev *sch) +{ + CssImage *css; + SubchSet *s_set; + + if (!channel_subsys->css[cssid]) { + fprintf(stderr, + "Suspicious call to %s (%x.%x.%04x) for non-existing css!\n", + __func__, cssid, ssid, schid); + return; + } + css = channel_subsys->css[cssid]; + + if (!css->sch_set[ssid]) { + size_t set_size = sizeof(SubchSet) + + BITS_TO_LONGS(MAX_SCHID + 1) * 2; + css->sch_set[ssid] = g_malloc0(set_size); + } + s_set = css->sch_set[ssid]; + + s_set->sch[schid] = sch; + if (sch) { + set_bit(schid, s_set->schids_used); + set_bit(devno, s_set->devnos_used); + } else { + clear_bit(schid, s_set->schids_used); + clear_bit(schid, s_set->devnos_used); + } +} + + bool css_present(uint8_t cssid) { return (channel_subsys->css[cssid] != NULL); diff --git a/hw/s390x/css.h b/hw/s390x/css.h index f3590eb..6876633 100644 --- a/hw/s390x/css.h +++ b/hw/s390x/css.h @@ -53,6 +53,9 @@ struct SubchDev { }; int css_create_css_image(uint8_t cssid, bool default_image); +bool css_devno_used(uint8_t cssid, uint8_t ssid, uint16_t devno); +void css_subch_assign(uint8_t cssid, uint8_t ssid, uint16_t schid, uint16_t devno, + SubchDev *sch); void css_sch_build_virtual_schib(SubchDev *sch, uint8_t chpid, uint8_t type); void css_reset(void); void css_reset_sch(SubchDev *sch); diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c new file mode 100644 index 0000000..28be1a7 --- /dev/null +++ b/hw/s390x/virtio-ccw.c @@ -0,0 +1,875 @@ +/* + * virtio ccw target implementation + * + * Copyright 2012 IBM Corp. + * Author(s): Cornelia Huck + * + * This work is licensed under the terms of the GNU GPL, version 2 or (at + * your option) any later version. See the COPYING file in the top-level + * directory. + */ + +#include +#include "block.h" +#include "blockdev.h" +#include "sysemu.h" +#include "net.h" +#include "monitor.h" +#include "qemu-thread.h" +#include "hw/virtio.h" +#include "hw/virtio-serial.h" +#include "hw/virtio-net.h" +#include "hw/sysbus.h" +#include "bitops.h" + +#include "ioinst.h" +#include "css.h" +#include "virtio-ccw.h" + +static const TypeInfo virtio_ccw_bus_info = { + .name = TYPE_VIRTIO_CCW_BUS, + .parent = TYPE_BUS, + .instance_size = sizeof(VirtioCcwBus), +}; + +static const VirtIOBindings virtio_ccw_bindings; + +VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch) +{ + VirtIODevice *vdev = NULL; + + if (sch->driver_data) { + vdev = ((VirtioCcwData *)sch->driver_data)->vdev; + } + return vdev; +} + +static void virtio_ccw_reset_subchannels(void *opaque) +{ + VirtioCcwBus *bus = opaque; + BusChild *kid; + VirtioCcwData *data; + + QTAILQ_FOREACH(kid, &bus->bus.children, sibling) { + data = (VirtioCcwData *)kid->child; + virtio_reset(data->vdev); + css_reset_sch(data->sch); + } + css_reset(); +} + +VirtioCcwBus *virtio_ccw_bus_init(void) +{ + VirtioCcwBus *cbus; + BusState *bus; + DeviceState *dev; + + /* Create bridge device */ + dev = qdev_create(NULL, "virtio-ccw-bridge"); + qdev_init_nofail(dev); + + /* Create bus on bridge device */ + bus = qbus_create(TYPE_VIRTIO_CCW_BUS, dev, "virtio-ccw"); + cbus = DO_UPCAST(VirtioCcwBus, bus, bus); + + /* Enable hotplugging */ + bus->allow_hotplug = 1; + + qemu_register_reset(virtio_ccw_reset_subchannels, cbus); + return cbus; +} + +/* Communication blocks used by several channel commands. */ +typedef struct VqInfoBlock { + uint64_t queue; + uint32_t align; + uint16_t index; + uint16_t num; +} QEMU_PACKED VqInfoBlock; + +typedef struct VqConfigBlock { + uint16_t index; + uint16_t num_max; +} QEMU_PACKED VqConfigBlock; + +typedef struct VirtioFeatDesc { + uint32_t features; + uint8_t index; +} QEMU_PACKED VirtioFeatDesc; + +/* Specify where the virtqueues for the subchannel are in guest memory. */ +static int virtio_ccw_set_vqs(SubchDev *sch, uint64_t addr, uint32_t align, + uint16_t index, uint16_t num) +{ + VirtioCcwData *data = sch->driver_data; + + if (index > VIRTIO_PCI_QUEUE_MAX) { + return -EINVAL; + } + + /* Current code in virtio.c relies on 4K alignment. */ + if (align != 4096) { + return -EINVAL; + } + + if (!data) { + return -EINVAL; + } + + virtio_queue_set_addr(data->vdev, index, addr); + if (!addr) { + virtio_queue_set_vector(data->vdev, index, 0); + } else { + /* Fail if we don't have a big enough queue. */ + /* TODO: Add interface to handle vring.num changing */ + if (virtio_queue_get_num(data->vdev, index) > num) { + return -EINVAL; + } + virtio_queue_set_vector(data->vdev, index, index); + } + return 0; +} + +static int virtio_ccw_cb(SubchDev *sch, CCW1 *ccw) +{ + int ret; + VqInfoBlock info; + uint8_t status; + VirtioFeatDesc features; + void *config; + uint64_t *indicators; + VqConfigBlock vq_config; + VirtioCcwData *data = sch->driver_data; + bool check_len; + int len; + + if (!ccw) { + return -EIO; + } + + if (!data) { + return -EINVAL; + } + + check_len = !((ccw->flags & CCW_FLAG_SLI) && !(ccw->flags & CCW_FLAG_DC)); + + /* Look at the command. */ + switch (ccw->cmd_code) { + case CCW_CMD_SET_VQ: + if (check_len) { + if (ccw->count != sizeof(info)) { + ret = -EINVAL; + break; + } + } else if (ccw->count < sizeof(info)) { + /* Can't execute command. */ + ret = -EINVAL; + break; + } + if (!qemu_get_ram_ptr(ccw->cda)) { + ret = -EFAULT; + } else { + info.queue = ldq_phys(ccw->cda); + info.align = ldl_phys(ccw->cda + sizeof(info.queue)); + info.index = lduw_phys(ccw->cda + sizeof(info.queue) + + sizeof(info.align)); + info.num = lduw_phys(ccw->cda + sizeof(info.queue) + + sizeof(info.align) + + sizeof(info.index)); + ret = virtio_ccw_set_vqs(sch, info.queue, info.align, info.index, + info.num); + sch->curr_status.scsw.count = 0; + } + break; + case CCW_CMD_VDEV_RESET: + virtio_reset(data->vdev); + ret = 0; + break; + case CCW_CMD_READ_FEAT: + if (check_len) { + if (ccw->count != sizeof(features)) { + ret = -EINVAL; + break; + } + } else if (ccw->count < sizeof(features)) { + /* Can't execute command. */ + ret = -EINVAL; + break; + } + if (!qemu_get_ram_ptr(ccw->cda)) { + ret = -EFAULT; + } else { + features.index = ldub_phys(ccw->cda + sizeof(features.features)); + if (features.index < ARRAY_SIZE(data->host_features)) { + features.features = data->host_features[features.index]; + } else { + /* Return zeroes if the guest supports more feature bits. */ + features.features = 0; + } + stw_le_phys(ccw->cda, features.features); + sch->curr_status.scsw.count = ccw->count - sizeof(features); + ret = 0; + } + break; + case CCW_CMD_WRITE_FEAT: + if (check_len) { + if (ccw->count != sizeof(features)) { + ret = -EINVAL; + break; + } + } else if (ccw->count < sizeof(features)) { + /* Can't execute command. */ + ret = -EINVAL; + break; + } + if (!qemu_get_ram_ptr(ccw->cda)) { + ret = -EFAULT; + } else { + features.index = ldub_phys(ccw->cda + sizeof(features.features)); + features.features = bswap32(lduw_phys(ccw->cda)); + if (features.index < ARRAY_SIZE(data->host_features)) { + if (data->vdev->set_features) { + data->vdev->set_features(data->vdev, features.features); + } + data->vdev->guest_features = features.features; + } else { + /* + * If the guest supports more feature bits, assert that it + * passes us zeroes for those we don't support. + */ + if (features.features) { + fprintf(stderr, "Guest bug: features[%i]=%x (expected 0)\n", + features.index, features.features); + /* XXX: do a unit check here? */ + } + } + sch->curr_status.scsw.count = ccw->count - sizeof(features); + ret = 0; + } + break; + case CCW_CMD_READ_CONF: + if (check_len) { + if (ccw->count > data->vdev->config_len) { + ret = -EINVAL; + break; + } + } + len = MIN(ccw->count, data->vdev->config_len); + if (!qemu_get_ram_ptr(ccw->cda)) { + ret = -EFAULT; + } else { + data->vdev->get_config(data->vdev, data->vdev->config); + cpu_physical_memory_write(ccw->cda, data->vdev->config, len); + sch->curr_status.scsw.count = ccw->count - len; + ret = 0; + } + break; + case CCW_CMD_WRITE_CONF: + if (check_len) { + if (ccw->count > data->vdev->config_len) { + ret = -EINVAL; + break; + } + } + len = MIN(ccw->count, data->vdev->config_len); + config = qemu_get_ram_ptr(ccw->cda); + if (!config) { + ret = -EFAULT; + } else { + memcpy(data->vdev->config, config, len); + if (data->vdev->set_config) { + data->vdev->set_config(data->vdev, data->vdev->config); + } + sch->curr_status.scsw.count = ccw->count - len; + ret = 0; + } + break; + case CCW_CMD_WRITE_STATUS: + if (check_len) { + if (ccw->count != sizeof(status)) { + ret = -EINVAL; + break; + } + } else if (ccw->count < sizeof(status)) { + /* Can't execute command. */ + ret = -EINVAL; + break; + } + if (!qemu_get_ram_ptr(ccw->cda)) { + ret = -EFAULT; + } else { + status = ldub_phys(ccw->cda); + virtio_set_status(data->vdev, status); + sch->curr_status.scsw.count = ccw->count - sizeof(status); + ret = 0; + } + break; + case CCW_CMD_SET_IND: + if (check_len) { + if (ccw->count != sizeof(*indicators)) { + ret = -EINVAL; + break; + } + } else if (ccw->count < sizeof(*indicators)) { + /* Can't execute command. */ + ret = -EINVAL; + break; + } + indicators = qemu_get_ram_ptr(ccw->cda); + if (!indicators) { + ret = -EFAULT; + } else { + data->indicators = ccw->cda; + sch->curr_status.scsw.count = ccw->count - sizeof(*indicators); + ret = 0; + } + break; + case CCW_CMD_READ_VQ_CONF: + if (check_len) { + if (ccw->count != sizeof(vq_config)) { + ret = -EINVAL; + break; + } + } else if (ccw->count < sizeof(vq_config)) { + /* Can't execute command. */ + ret = -EINVAL; + break; + } + if (!qemu_get_ram_ptr(ccw->cda)) { + ret = -EFAULT; + } else { + vq_config.index = lduw_phys(ccw->cda); + vq_config.num_max = virtio_queue_get_num(data->vdev, + vq_config.index); + stw_phys(ccw->cda + sizeof(vq_config.index), vq_config.num_max); + sch->curr_status.scsw.count = ccw->count - sizeof(vq_config); + ret = 0; + } + break; + default: + ret = -EOPNOTSUPP; + break; + } + return ret; +} + +static int virtio_ccw_device_init(VirtioCcwData *dev, VirtIODevice *vdev) +{ + unsigned int cssid = 0; + unsigned int ssid = 0; + unsigned int schid; + unsigned int devno; + bool have_devno = false; + bool found = false; + SubchDev *sch; + int ret; + int num; + + sch = g_malloc0(sizeof(SubchDev)); + + sch->driver_data = dev; + dev->sch = sch; + + dev->vdev = vdev; + dev->indicators = 0; + + /* Initialize subchannel structure. */ + qemu_mutex_init(&sch->mutex); + sch->channel_prog = NULL; + sch->last_cmd = NULL; + sch->orb = NULL; + /* + * Use a device number if provided. Otherwise, fall back to subchannel + * number. + */ + if (dev->bus_id) { + num = sscanf(dev->bus_id, "%x.%x.%04x", &cssid, &ssid, &devno); + if (num == 3) { + if ((cssid > MAX_CSSID) || (ssid > MAX_SSID)) { + ret = -EINVAL; + error_report("Invalid cssid or ssid: cssid %x, ssid %x", + cssid, ssid); + goto out_err; + } + /* Enforce use of virtual cssid. */ + if (cssid != VIRTUAL_CSSID) { + ret = -EINVAL; + error_report("cssid %x not valid for virtio devices", cssid); + goto out_err; + } + if (css_devno_used(cssid, ssid, devno)) { + ret = -EEXIST; + error_report("Device %x.%x.%04x already exists", cssid, ssid, + devno); + goto out_err; + } + sch->cssid = cssid; + sch->ssid = ssid; + sch->devno = devno; + have_devno = true; + } else { + ret = -EINVAL; + error_report("Malformed devno parameter '%s'", dev->bus_id); + goto out_err; + } + } + + /* Find the next free id. */ + if (have_devno) { + for (schid = 0; schid <= MAX_SCHID; schid++) { + if (!css_find_subch(1, cssid, ssid, schid)) { + sch->schid = schid; + css_subch_assign(cssid, ssid, schid, devno, sch); + found = true; + break; + } + } + if (!found) { + ret = -ENODEV; + error_report("No free subchannel found for %x.%x.%04x", cssid, ssid, + devno); + goto out_err; + } + } else { + cssid = VIRTUAL_CSSID; + for (ssid = 0; ssid <= MAX_SSID; ssid++) { + for (schid = 0; schid <= MAX_SCHID; schid++) { + if (!css_find_subch(1, cssid, ssid, schid)) { + sch->cssid = cssid; + sch->ssid = ssid; + sch->schid = schid; + devno = schid; + /* + * If the devno is already taken, look further in this + * subchannel set. + */ + while (css_devno_used(cssid, ssid, devno)) { + if (devno == MAX_SCHID) { + devno = 0; + } else if (devno == schid - 1) { + ret = -ENODEV; + error_report("No free devno found"); + goto out_err; + } else { + devno++; + } + } + sch->devno = devno; + css_subch_assign(cssid, ssid, schid, devno, sch); + found = true; + break; + } + } + if (found) { + break; + } + } + if (!found) { + ret = -ENODEV; + error_report("Virtual channel subsystem is full!"); + goto out_err; + } + } + + /* Build initial schib. */ + css_sch_build_virtual_schib(sch, 0, VIRTIO_CCW_CHPID_TYPE); + + sch->ccw_cb = virtio_ccw_cb; + + /* Build senseid data. */ + memset(&sch->id, 0, sizeof(SenseId)); + sch->id.reserved = 0xff; + sch->id.cu_type = VIRTIO_CCW_CU_TYPE; + sch->id.cu_model = dev->vdev->device_id; + + virtio_bind_device(vdev, &virtio_ccw_bindings, dev); + /* Only the first 32 feature bits are used. */ + dev->host_features[0] = vdev->get_features(vdev, dev->host_features[0]); + + s390_sch_hotplug(sch->cssid, sch->ssid, sch->schid, sch->devno, + &sch->curr_status, dev->qdev.hotplugged, 1, 1); + return 0; + +out_err: + dev->sch = NULL; + g_free(sch); + return ret; +} + +static int virtio_ccw_exit(VirtioCcwData *dev) +{ + SubchDev *sch = dev->sch; + + if (sch) { + css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL); + g_free(sch); + } + dev->indicators = 0; + return 0; +} + +static int virtio_ccw_net_init(VirtioCcwData *dev) +{ + VirtIODevice *vdev; + + vdev = virtio_net_init((DeviceState *)dev, &dev->nic, &dev->net); + if (!vdev) { + return -1; + } + + return virtio_ccw_device_init(dev, vdev); +} + +static int virtio_ccw_net_exit(VirtioCcwData *dev) +{ + virtio_net_exit(dev->vdev); + return virtio_ccw_exit(dev); +} + +static int virtio_ccw_blk_init(VirtioCcwData *dev) +{ + VirtIODevice *vdev; + + vdev = virtio_blk_init((DeviceState *)dev, &dev->blk); + if (!vdev) { + return -1; + } + + return virtio_ccw_device_init(dev, vdev); +} + +static int virtio_ccw_blk_exit(VirtioCcwData *dev) +{ + virtio_blk_exit(dev->vdev); + blockdev_mark_auto_del(dev->blk.conf.bs); + return virtio_ccw_exit(dev); +} + +static int virtio_ccw_serial_init(VirtioCcwData *dev) +{ + VirtioCcwBus *bus; + VirtIODevice *vdev; + int r; + + bus = DO_UPCAST(VirtioCcwBus, bus, dev->qdev.parent_bus); + + vdev = virtio_serial_init((DeviceState *)dev, &dev->serial); + if (!vdev) { + return -1; + } + + r = virtio_ccw_device_init(dev, vdev); + if (!r) { + bus->console = dev; + } + + return r; +} + +static int virtio_ccw_serial_exit(VirtioCcwData *dev) +{ + VirtioCcwBus *bus; + + bus = DO_UPCAST(VirtioCcwBus, bus, dev->qdev.parent_bus); + bus->console = NULL; + virtio_serial_exit(dev->vdev); + return virtio_ccw_exit(dev); +} + +static int virtio_ccw_balloon_init(VirtioCcwData *dev) +{ + VirtIODevice *vdev; + + vdev = virtio_balloon_init((DeviceState *)dev); + if (!vdev) { + return -1; + } + + return virtio_ccw_device_init(dev, vdev); +} + +static int virtio_ccw_balloon_exit(VirtioCcwData *dev) +{ + virtio_balloon_exit(dev->vdev); + return virtio_ccw_exit(dev); +} + +static int virtio_ccw_scsi_init(VirtioCcwData *dev) +{ + VirtIODevice *vdev; + + vdev = virtio_scsi_init((DeviceState *)dev, &dev->scsi); + if (!vdev) { + return -1; + } + + return virtio_ccw_device_init(dev, vdev); +} + +static int virtio_ccw_scsi_exit(VirtioCcwData *dev) +{ + virtio_scsi_exit(dev->vdev); + return virtio_ccw_exit(dev); +} + +VirtioCcwData *virtio_ccw_bus_console(VirtioCcwBus *bus) +{ + return bus->console; +} + +static void virtio_ccw_notify(void *opaque, uint16_t vector) +{ + VirtioCcwData *dev = opaque; + SubchDev *sch = dev->sch; + uint64_t indicators; + + if (vector >= VIRTIO_PCI_QUEUE_MAX) { + return; + } + + qemu_mutex_lock(&sch->mutex); + indicators = ldq_phys(dev->indicators); + set_bit(vector, &indicators); + stq_phys(dev->indicators, indicators); + + css_conditional_io_interrupt(sch); + + qemu_mutex_unlock(&sch->mutex); +} + +static unsigned virtio_ccw_get_features(void *opaque) +{ + VirtioCcwData *dev = opaque; + + /* Only the first 32 feature bits are used. */ + return dev->host_features[0]; +} + +/**************** Virtio-ccw Bus Device Descriptions *******************/ + +static const VirtIOBindings virtio_ccw_bindings = { + .notify = virtio_ccw_notify, + .get_features = virtio_ccw_get_features, +}; + +static Property virtio_ccw_net_properties[] = { + DEFINE_PROP_STRING("devno", VirtioCcwData, bus_id), + DEFINE_NIC_PROPERTIES(VirtioCcwData, nic), + DEFINE_PROP_UINT32("x-txtimer", VirtioCcwData, + net.txtimer, TX_TIMER_INTERVAL), + DEFINE_PROP_INT32("x-txburst", VirtioCcwData, + net.txburst, TX_BURST), + DEFINE_PROP_STRING("tx", VirtioCcwData, net.tx), + DEFINE_PROP_END_OF_LIST(), +}; + +static void virtio_ccw_net_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); + + k->init = virtio_ccw_net_init; + k->exit = virtio_ccw_net_exit; + dc->props = virtio_ccw_net_properties; +} + +static TypeInfo virtio_ccw_net = { + .name = "virtio-net-ccw", + .parent = TYPE_VIRTIO_CCW_DEVICE, + .instance_size = sizeof(VirtioCcwData), + .class_init = virtio_ccw_net_class_init, +}; + +static Property virtio_ccw_blk_properties[] = { + DEFINE_PROP_STRING("devno", VirtioCcwData, bus_id), + DEFINE_BLOCK_PROPERTIES(VirtioCcwData, blk.conf), + DEFINE_PROP_STRING("serial", VirtioCcwData, blk.serial), +#ifdef __linux__ + DEFINE_PROP_BIT("scsi", VirtioCcwData, blk.scsi, 0, true), +#endif + DEFINE_PROP_END_OF_LIST(), +}; + +static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); + + k->init = virtio_ccw_blk_init; + k->exit = virtio_ccw_blk_exit; + dc->props = virtio_ccw_blk_properties; +} + +static TypeInfo virtio_ccw_blk = { + .name = "virtio-blk-ccw", + .parent = TYPE_VIRTIO_CCW_DEVICE, + .instance_size = sizeof(VirtioCcwData), + .class_init = virtio_ccw_blk_class_init, +}; + +static Property virtio_ccw_serial_properties[] = { + DEFINE_PROP_STRING("devno", VirtioCcwData, bus_id), + DEFINE_PROP_UINT32("max_ports", VirtioCcwData, serial.max_virtserial_ports, + 31), + DEFINE_PROP_END_OF_LIST(), +}; + +static void virtio_ccw_serial_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); + + k->init = virtio_ccw_serial_init; + k->exit = virtio_ccw_serial_exit; + dc->props = virtio_ccw_serial_properties; +} + +static TypeInfo virtio_ccw_serial = { + .name = "virtio-serial-ccw", + .parent = TYPE_VIRTIO_CCW_DEVICE, + .instance_size = sizeof(VirtioCcwData), + .class_init = virtio_ccw_serial_class_init, +}; + +static Property virtio_ccw_balloon_properties[] = { + DEFINE_PROP_STRING("devno", VirtioCcwData, bus_id), + DEFINE_PROP_END_OF_LIST(), +}; + +static void virtio_ccw_balloon_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); + + k->init = virtio_ccw_balloon_init; + k->exit = virtio_ccw_balloon_exit; + dc->props = virtio_ccw_balloon_properties; +} + +static TypeInfo virtio_ccw_balloon = { + .name = "virtio-balloon-ccw", + .parent = TYPE_VIRTIO_CCW_DEVICE, + .instance_size = sizeof(VirtioCcwData), + .class_init = virtio_ccw_balloon_class_init, +}; + +static Property virtio_ccw_scsi_properties[] = { + DEFINE_PROP_STRING("devno", VirtioCcwData, bus_id), + DEFINE_VIRTIO_SCSI_PROPERTIES(VirtioCcwData, host_features[0], scsi), + DEFINE_PROP_END_OF_LIST(), +}; + +static void virtio_ccw_scsi_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass); + + k->init = virtio_ccw_scsi_init; + k->exit = virtio_ccw_scsi_exit; + dc->props = virtio_ccw_scsi_properties; +} + +static TypeInfo virtio_ccw_scsi = { + .name = "virtio-scsi-ccw", + .parent = TYPE_VIRTIO_CCW_DEVICE, + .instance_size = sizeof(VirtioCcwData), + .class_init = virtio_ccw_scsi_class_init, +}; + +static int virtio_ccw_busdev_init(DeviceState *dev) +{ + VirtioCcwData *_dev = (VirtioCcwData *)dev; + VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev); + + return _info->init(_dev); +} + +static int virtio_ccw_busdev_exit(DeviceState *dev) +{ + VirtioCcwData *_dev = (VirtioCcwData *)dev; + VirtIOCCWDeviceClass *_info = VIRTIO_CCW_DEVICE_GET_CLASS(dev); + + return _info->exit(_dev); +} + +static int virtio_ccw_busdev_unplug(DeviceState *dev) +{ + VirtioCcwData *_dev = (VirtioCcwData *)dev; + SubchDev *sch = _dev->sch; + + /* + * We should arrive here only for device_del, since we don't support + * direct hot(un)plug of channels, but only through virtio. + */ + assert(sch != NULL); + /* Subchannel is now disabled and no longer valid. */ + qemu_mutex_lock(&sch->mutex); + sch->curr_status.pmcw.ena = 0; + sch->curr_status.pmcw.dnv = 0; + qemu_mutex_unlock(&sch->mutex); + + s390_sch_hotplug(sch->cssid, sch->ssid, sch->schid, sch->devno, + &sch->curr_status, 1, 0, 1); + + object_unparent(OBJECT(dev)); + qdev_free(dev); + return 0; +} + +static void virtio_ccw_device_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->init = virtio_ccw_busdev_init; + dc->exit = virtio_ccw_busdev_exit; + dc->unplug = virtio_ccw_busdev_unplug; + dc->bus_type = TYPE_VIRTIO_CCW_BUS; + +} + +static TypeInfo virtio_ccw_device_info = { + .name = TYPE_VIRTIO_CCW_DEVICE, + .parent = TYPE_DEVICE, + .instance_size = sizeof(VirtioCcwData), + .class_init = virtio_ccw_device_class_init, + .class_size = sizeof(VirtIOCCWDeviceClass), + .abstract = true, +}; + +/***************** Virtio-ccw Bus Bridge Device ********************/ +/* Only required to have the virtio bus as child in the system bus */ + +static int virtio_ccw_bridge_init(SysBusDevice *dev) +{ + /* nothing */ + return 0; +} + +static void virtio_ccw_bridge_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); + + k->init = virtio_ccw_bridge_init; + dc->no_user = 1; +} + +static TypeInfo virtio_ccw_bridge_info = { + .name = "virtio-ccw-bridge", + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(SysBusDevice), + .class_init = virtio_ccw_bridge_class_init, +}; + +static void virtio_ccw_register(void) +{ + type_register_static(&virtio_ccw_bus_info); + type_register_static(&virtio_ccw_device_info); + type_register_static(&virtio_ccw_serial); + type_register_static(&virtio_ccw_blk); + type_register_static(&virtio_ccw_net); + type_register_static(&virtio_ccw_balloon); + type_register_static(&virtio_ccw_scsi); + type_register_static(&virtio_ccw_bridge_info); +} +type_init(virtio_ccw_register); diff --git a/hw/s390x/virtio-ccw.h b/hw/s390x/virtio-ccw.h new file mode 100644 index 0000000..8125acf --- /dev/null +++ b/hw/s390x/virtio-ccw.h @@ -0,0 +1,79 @@ +/* + * virtio ccw target definitions + * + * Copyright 2012 IBM Corp. + * Author(s): Cornelia Huck + * + * This work is licensed under the terms of the GNU GPL, version 2 or (at + * your option) any later version. See the COPYING file in the top-level + * directory. + */ + +#include +#include +#include +#include + +#define VIRTUAL_CSSID 0xfe + +#define VIRTIO_CCW_CU_TYPE 0x3832 +#define VIRTIO_CCW_CHPID_TYPE 0x32 + +#define CCW_CMD_SET_VQ 0x13 +#define CCW_CMD_VDEV_RESET 0x33 +#define CCW_CMD_READ_FEAT 0x12 +#define CCW_CMD_WRITE_FEAT 0x11 +#define CCW_CMD_READ_CONF 0x22 +#define CCW_CMD_WRITE_CONF 0x21 +#define CCW_CMD_WRITE_STATUS 0x31 +#define CCW_CMD_SET_IND 0x43 +#define CCW_CMD_READ_VQ_CONF 0x32 + +#define TYPE_VIRTIO_CCW_DEVICE "virtio-ccw-device" +#define VIRTIO_CCW_DEVICE(obj) \ + OBJECT_CHECK(VirtioCcwData, (obj), TYPE_VIRTIO_CCW_DEVICE) +#define VIRTIO_CCW_DEVICE_CLASS(klass) \ + OBJECT_CLASS_CHECK(VirtIOCCWDeviceClass, (klass), TYPE_VIRTIO_CCW_DEVICE) +#define VIRTIO_CCW_DEVICE_GET_CLASS(obj) \ + OBJECT_GET_CLASS(VirtIOCCWDeviceClass, (obj), TYPE_VIRTIO_CCW_DEVICE) + +#define TYPE_VIRTIO_CCW_BUS "virtio-ccw-bus" +#define VIRTIO_CCW_BUS(obj) \ + OBJECT_CHECK(VirtioCcwBus, (obj), TYPE_VIRTIO_CCW_BUS) + +typedef struct VirtioCcwData VirtioCcwData; + +typedef struct VirtIOCCWDeviceClass { + DeviceClass qdev; + int (*init)(VirtioCcwData *dev); + int (*exit)(VirtioCcwData *dev); +} VirtIOCCWDeviceClass; + +/* Change here if we want to support more feature bits. */ +#define VIRTIO_CCW_FEATURE_SIZE 1 + +struct VirtioCcwData { + DeviceState qdev; + SubchDev *sch; + VirtIODevice *vdev; + char *bus_id; + VirtIOBlkConf blk; + NICConf nic; + uint32_t host_features[VIRTIO_CCW_FEATURE_SIZE]; + virtio_serial_conf serial; + virtio_net_conf net; + VirtIOSCSIConf scsi; + /* Guest provided values: */ + target_phys_addr_t indicators; +}; + +/* virtio-ccw bus type */ +typedef struct VirtioCcwBus { + BusState bus; + VirtioCcwData *console; +} VirtioCcwBus; + +VirtioCcwBus *virtio_ccw_bus_init(void); +void virtio_ccw_device_update_status(SubchDev *sch); +VirtioCcwData *virtio_ccw_bus_console(VirtioCcwBus *bus); +VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch); diff --git a/vl.c b/vl.c index 7c577fa..2b8cae6 100644 --- a/vl.c +++ b/vl.c @@ -289,6 +289,7 @@ static struct { { .driver = "scsi-cd", .flag = &default_cdrom }, { .driver = "virtio-serial-pci", .flag = &default_virtcon }, { .driver = "virtio-serial-s390", .flag = &default_virtcon }, + { .driver = "virtio-serial-ccw", .flag = &default_virtcon }, { .driver = "virtio-serial", .flag = &default_virtcon }, { .driver = "VGA", .flag = &default_vga }, { .driver = "isa-vga", .flag = &default_vga },