From patchwork Wed Apr 9 11:34:56 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cornelia Huck X-Patchwork-Id: 337828 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id EC438140180 for ; Wed, 9 Apr 2014 21:36:27 +1000 (EST) Received: from localhost ([::1]:45536 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WXqnp-0005di-Sh for incoming@patchwork.ozlabs.org; Wed, 09 Apr 2014 07:36:25 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38529) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WXqmp-0003yp-T9 for qemu-devel@nongnu.org; Wed, 09 Apr 2014 07:35:33 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WXqmf-0004ao-6B for qemu-devel@nongnu.org; Wed, 09 Apr 2014 07:35:23 -0400 Received: from e06smtp16.uk.ibm.com ([195.75.94.112]:50962) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WXqme-0004a4-Qb for qemu-devel@nongnu.org; Wed, 09 Apr 2014 07:35:13 -0400 Received: from /spool/local by e06smtp16.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Register an I/O adapter interrupt source for when virtio-ccw devices start using adapter interrupts. Reviewed-by: Thomas Huth Signed-off-by: Cornelia Huck --- hw/intc/s390_flic.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++ hw/s390x/css.c | 51 ++++++++++++++++++++++++++++++++++++++++++ hw/s390x/css.h | 4 ++++ hw/s390x/virtio-ccw.c | 4 ++++ hw/s390x/virtio-ccw.h | 1 + target-s390x/cpu.h | 33 +++++++++++++++++++++++++++ 6 files changed, 152 insertions(+) diff --git a/hw/intc/s390_flic.c b/hw/intc/s390_flic.c index b2ef3e3..c033c8a 100644 --- a/hw/intc/s390_flic.c +++ b/hw/intc/s390_flic.c @@ -21,6 +21,11 @@ #define FLIC_FAILED (-1UL) #define FLIC_SAVEVM_VERSION 1 +static KVMS390FLICState *s390_get_flic(void) +{ + return KVM_S390_FLIC(object_resolve_path("/machine/s390-flic", NULL)); +} + void s390_flic_init(void) { DeviceState *dev; @@ -148,6 +153,60 @@ static int __get_all_irqs(KVMS390FLICState *flic, return r; } +int kvm_s390_register_io_adapter(uint32_t id, uint8_t isc, bool swap, + bool is_maskable) +{ + struct kvm_s390_io_adapter adapter = { + .id = id, + .isc = isc, + .maskable = is_maskable, + .swap = swap, + }; + KVMS390FLICState *flic = s390_get_flic(); + int r, ret; + struct kvm_device_attr attr = { + .group = KVM_DEV_FLIC_ADAPTER_REGISTER, + .addr = (uint64_t)&adapter, + }; + + if (!flic) { + return -ENOSYS; + } + if (!kvm_check_extension(kvm_state, KVM_CAP_IRQ_ROUTING)) { + return -ENOSYS; + } + + r = ioctl(flic->fd, KVM_SET_DEVICE_ATTR, &attr); + + ret = r ? -errno : 0; + return ret; +} + +int kvm_s390_io_adapter_map(uint32_t id, uint64_t map_addr, bool do_map) +{ + struct kvm_s390_io_adapter_req req = { + .id = id, + .type = do_map ? KVM_S390_IO_ADAPTER_MAP : KVM_S390_IO_ADAPTER_UNMAP, + .addr = map_addr, + }; + KVMS390FLICState *flic = s390_get_flic(); + struct kvm_device_attr attr = { + .group = KVM_DEV_FLIC_ADAPTER_MODIFY, + .addr = (uint64_t)&req, + }; + int r; + + if (!flic) { + return -ENOSYS; + } + if (!kvm_check_extension(kvm_state, KVM_CAP_IRQ_ROUTING)) { + return -ENOSYS; + } + + r = ioctl(flic->fd, KVM_SET_DEVICE_ATTR, &attr); + return r ? -errno : 0; +} + /** * kvm_flic_save - Save pending floating interrupts * @f: QEMUFile containing migration state diff --git a/hw/s390x/css.c b/hw/s390x/css.c index 7074d2b..a6d173f 100644 --- a/hw/s390x/css.c +++ b/hw/s390x/css.c @@ -39,6 +39,13 @@ typedef struct CssImage { ChpInfo chpids[MAX_CHPID + 1]; } CssImage; +typedef struct IoAdapter { + uint32_t id; + uint8_t type; + uint8_t isc; + QTAILQ_ENTRY(IoAdapter) sibling; +} IoAdapter; + typedef struct ChannelSubSys { QTAILQ_HEAD(, CrwContainer) pending_crws; bool do_crw_mchk; @@ -49,6 +56,7 @@ typedef struct ChannelSubSys { uint64_t chnmon_area; CssImage *css[MAX_CSSID + 1]; uint8_t default_cssid; + QTAILQ_HEAD(, IoAdapter) io_adapters; } ChannelSubSys; static ChannelSubSys *channel_subsys; @@ -69,6 +77,48 @@ int css_create_css_image(uint8_t cssid, bool default_image) return 0; } +int css_register_io_adapter(uint8_t type, uint8_t isc, bool swap, + bool maskable, uint32_t *id) +{ + IoAdapter *adapter; + bool found = false; + int ret; + + *id = 0; + QTAILQ_FOREACH(adapter, &channel_subsys->io_adapters, sibling) { + if ((adapter->type == type) && (adapter->isc == isc)) { + *id = adapter->id; + found = true; + ret = 0; + break; + } + if (adapter->id >= *id) { + *id = adapter->id + 1; + } + } + if (found) { + goto out; + } + adapter = g_new0(IoAdapter, 1); + ret = s390_register_io_adapter(*id, isc, swap, maskable); + if (ret == -ENOSYS) { + /* Keep adapter even if we didn't register it anywhere. */ + ret = 0; + } + if (ret == 0) { + adapter->id = *id; + adapter->isc = isc; + adapter->type = type; + QTAILQ_INSERT_TAIL(&channel_subsys->io_adapters, adapter, sibling); + } else { + g_free(adapter); + fprintf(stderr, "Unexpected error %d when registering adapter %d\n", + ret, *id); + } +out: + return ret; +} + uint16_t css_build_subchannel_id(SubchDev *sch) { if (channel_subsys->max_cssid > 0) { @@ -1239,6 +1289,7 @@ static void css_init(void) channel_subsys->do_crw_mchk = true; channel_subsys->crws_lost = false; channel_subsys->chnmon_active = false; + QTAILQ_INIT(&channel_subsys->io_adapters); } machine_init(css_init); diff --git a/hw/s390x/css.h b/hw/s390x/css.h index e9b4405..380e8e7 100644 --- a/hw/s390x/css.h +++ b/hw/s390x/css.h @@ -99,4 +99,8 @@ void css_generate_sch_crws(uint8_t cssid, uint8_t ssid, uint16_t schid, int hotplugged, int add); void css_generate_chp_crws(uint8_t cssid, uint8_t chpid); void css_adapter_interrupt(uint8_t isc); + +#define CSS_IO_ADAPTER_VIRTIO 1 +int css_register_io_adapter(uint8_t type, uint8_t isc, bool swap, + bool maskable, uint32_t *id); #endif diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c index 2bf0af8..1193682 100644 --- a/hw/s390x/virtio-ccw.c +++ b/hw/s390x/virtio-ccw.c @@ -522,6 +522,10 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw) dev->thinint_isc = thinint->isc; dev->ind_bit = thinint->ind_bit; cpu_physical_memory_unmap(thinint, hw_len, 0, hw_len); + ret = css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO, + dev->thinint_isc, true, false, + &dev->adapter_id); + assert(ret == 0); sch->thinint_active = ((dev->indicators != 0) && (dev->summary_indicator != 0)); sch->curr_status.scsw.count = ccw.count - len; diff --git a/hw/s390x/virtio-ccw.h b/hw/s390x/virtio-ccw.h index 4393e44..0b70b91 100644 --- a/hw/s390x/virtio-ccw.h +++ b/hw/s390x/virtio-ccw.h @@ -85,6 +85,7 @@ struct VirtioCcwDevice { bool ioeventfd_disabled; uint32_t flags; uint8_t thinint_isc; + uint32_t adapter_id; /* Guest provided values: */ hwaddr indicators; hwaddr indicators2; diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h index f332d41..53391fd 100644 --- a/target-s390x/cpu.h +++ b/target-s390x/cpu.h @@ -1062,6 +1062,9 @@ void kvm_s390_enable_css_support(S390CPU *cpu); int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch, int vq, bool assign); int kvm_s390_cpu_restart(S390CPU *cpu); +int kvm_s390_register_io_adapter(uint32_t id, uint8_t isc, bool swap, + bool maskable); +int kvm_s390_io_adapter_map(uint32_t id, uint64_t map_addr, bool do_map); #else static inline void kvm_s390_io_interrupt(S390CPU *cpu, uint16_t subchannel_id, @@ -1086,6 +1089,16 @@ static inline int kvm_s390_cpu_restart(S390CPU *cpu) { return -ENOSYS; } +static inline int kvm_s390_register_io_adapter(uint32_t id, uint8_t isc, + bool swap, bool maskable) +{ + return -ENOSYS; +} +static inline int kvm_s390_io_adapter_map(uint32_t id, uint64_t map_addr, + bool do_map) +{ + return -ENOSYS; +} #endif static inline int s390_cpu_restart(S390CPU *cpu) @@ -1131,4 +1144,24 @@ static inline int s390_assign_subch_ioeventfd(EventNotifier *notifier, } } +static inline int s390_register_io_adapter(uint32_t id, uint8_t isc, bool swap, + bool is_maskable) +{ + if (kvm_enabled()) { + return kvm_s390_register_io_adapter(id, isc, swap, is_maskable); + } else { + return -ENOSYS; + } +} + +static inline int s390_io_adapter_map(uint32_t id, uint64_t map_addr, + bool do_map) +{ + if (kvm_enabled()) { + return kvm_s390_io_adapter_map(id, map_addr, do_map); + } else { + return -ENOSYS; + } +} + #endif