From b6b6a24d687a9cb3396a7c546c02cd62181357d8 Mon Sep 17 00:00:00 2001 From: Amit Shah Date: Fri, 4 Feb 2011 08:20:34 -0200 Subject: [RHEL6 qemu-kvm PATCH 03/27] virtio-serial: Use a struct to pass config information from proxy RH-Author: Amit Shah Message-id: <0977667699834b7e39b9c59b576794a538b5637a.1296806194.git.amit.shah@redhat.com> Patchwork-id: 17704 O-Subject: [RHEL6.1 qemu PATCH v5 03/19] virtio-serial: Use a struct to pass config information from proxy Bugzilla: 588916 RH-Acked-by: Alon Levy RH-Acked-by: Juan Quintela RH-Acked-by: Jes Sorensen Instead of using a single variable to pass to the virtio_serial_init function, use a struct so that expanding the number of variables to be passed on later is easier. Signed-off-by: Amit Shah --- hw/virtio-pci.c | 12 ++++++------ hw/virtio-serial-bus.c | 16 ++++++++-------- hw/virtio-serial.h | 5 +++++ hw/virtio.h | 3 ++- 4 files changed, 21 insertions(+), 15 deletions(-) Signed-off-by: Eduardo Habkost --- hw/virtio-pci.c | 12 ++++++------ hw/virtio-serial-bus.c | 16 ++++++++-------- hw/virtio-serial.h | 5 +++++ hw/virtio.h | 3 ++- 4 files changed, 21 insertions(+), 15 deletions(-) diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c index fcd7aa2..36ec04c 100644 --- a/hw/virtio-pci.c +++ b/hw/virtio-pci.c @@ -18,6 +18,7 @@ #include "virtio.h" #include "virtio-blk.h" #include "virtio-net.h" +#include "virtio-serial.h" #include "pci.h" #include "qemu-error.h" #include "msix.h" @@ -106,8 +107,7 @@ typedef struct { BlockConf block; NICConf nic; uint32_t host_features; - /* Max. number of ports we can have for a the virtio-serial device */ - uint32_t max_virtserial_ports; + virtio_serial_conf serial; virtio_net_conf net; bool ioeventfd_disabled; bool ioeventfd_started; @@ -849,12 +849,12 @@ static int virtio_serial_init_pci(PCIDevice *pci_dev) proxy->class_code != PCI_CLASS_OTHERS) /* qemu-kvm */ proxy->class_code = PCI_CLASS_COMMUNICATION_OTHER; - vdev = virtio_serial_init(&pci_dev->qdev, proxy->max_virtserial_ports); + vdev = virtio_serial_init(&pci_dev->qdev, &proxy->serial); if (!vdev) { return -1; } vdev->nvectors = proxy->nvectors == DEV_NVECTORS_UNSPECIFIED - ? proxy->max_virtserial_ports + 1 + ? proxy->serial.max_virtserial_ports + 1 : proxy->nvectors; virtio_init_pci(proxy, vdev, PCI_VENDOR_ID_REDHAT_QUMRANET, @@ -962,8 +962,8 @@ static PCIDeviceInfo virtio_info[] = { DEV_NVECTORS_UNSPECIFIED), DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), - DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, max_virtserial_ports, - 31), + DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, + serial.max_virtserial_ports, 31), DEFINE_PROP_END_OF_LIST(), }, .qdev.reset = virtio_pci_reset, diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c index 131831a..cc627af 100644 --- a/hw/virtio-serial-bus.c +++ b/hw/virtio-serial-bus.c @@ -739,19 +739,19 @@ void virtio_serial_port_qdev_register(VirtIOSerialPortInfo *info) qdev_register(&info->qdev); } -VirtIODevice *virtio_serial_init(DeviceState *dev, uint32_t max_nr_ports) +VirtIODevice *virtio_serial_init(DeviceState *dev, virtio_serial_conf *conf) { VirtIOSerial *vser; VirtIODevice *vdev; uint32_t i, max_supported_ports; - if (!max_nr_ports) + if (!conf->max_virtserial_ports) return NULL; /* Each port takes 2 queues, and one pair is for the control queue */ max_supported_ports = VIRTIO_PCI_QUEUE_MAX / 2 - 1; - if (max_nr_ports > max_supported_ports) { + if (conf->max_virtserial_ports > max_supported_ports) { error_report("maximum ports supported: %u", max_supported_ports); return NULL; } @@ -767,9 +767,9 @@ VirtIODevice *virtio_serial_init(DeviceState *dev, uint32_t max_nr_ports) vser->bus->vser = vser; QTAILQ_INIT(&vser->ports); - vser->bus->max_nr_ports = max_nr_ports; - vser->ivqs = qemu_malloc(max_nr_ports * sizeof(VirtQueue *)); - vser->ovqs = qemu_malloc(max_nr_ports * sizeof(VirtQueue *)); + vser->bus->max_nr_ports = conf->max_virtserial_ports; + vser->ivqs = qemu_malloc(conf->max_virtserial_ports * sizeof(VirtQueue *)); + vser->ovqs = qemu_malloc(conf->max_virtserial_ports * sizeof(VirtQueue *)); /* Add a queue for host to guest transfers for port 0 (backward compat) */ vser->ivqs[0] = virtio_add_queue(vdev, 128, handle_input); @@ -794,8 +794,8 @@ VirtIODevice *virtio_serial_init(DeviceState *dev, uint32_t max_nr_ports) vser->ovqs[i] = virtio_add_queue(vdev, 128, handle_output); } - vser->config.max_nr_ports = max_nr_ports; - vser->ports_map = qemu_mallocz(((max_nr_ports + 31) / 32) + vser->config.max_nr_ports = conf->max_virtserial_ports; + vser->ports_map = qemu_mallocz(((conf->max_virtserial_ports + 31) / 32) * sizeof(vser->ports_map[0])); /* * Reserve location 0 for a console port for backward compat diff --git a/hw/virtio-serial.h b/hw/virtio-serial.h index ff08c40..4e64c44 100644 --- a/hw/virtio-serial.h +++ b/hw/virtio-serial.h @@ -45,6 +45,11 @@ struct virtio_console_control { uint16_t value; /* Extra information for the key */ }; +struct virtio_serial_conf { + /* Max. number of ports we can have for a the virtio-serial device */ + uint32_t max_virtserial_ports; +}; + /* Some events for the internal messages (control packets) */ #define VIRTIO_CONSOLE_DEVICE_READY 0 #define VIRTIO_CONSOLE_PORT_ADD 1 diff --git a/hw/virtio.h b/hw/virtio.h index 14bc41a..6d3d960 100644 --- a/hw/virtio.h +++ b/hw/virtio.h @@ -192,7 +192,8 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf); struct virtio_net_conf; VirtIODevice *virtio_net_init(DeviceState *dev, NICConf *conf, struct virtio_net_conf *net); -VirtIODevice *virtio_serial_init(DeviceState *dev, uint32_t max_nr_ports); +typedef struct virtio_serial_conf virtio_serial_conf; +VirtIODevice *virtio_serial_init(DeviceState *dev, virtio_serial_conf *serial); VirtIODevice *virtio_balloon_init(DeviceState *dev); void virtio_net_exit(VirtIODevice *vdev); -- 1.7.3.2