| 1 | /* |
| 2 | * virtio ccw target definitions |
| 3 | * |
| 4 | * Copyright 2012,2015 IBM Corp. |
| 5 | * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com> |
| 6 | * Pierre Morel <pmorel@linux.vnet.ibm.com> |
| 7 | * |
| 8 | * This work is licensed under the terms of the GNU GPL, version 2 or (at |
| 9 | * your option) any later version. See the COPYING file in the top-level |
| 10 | * directory. |
| 11 | */ |
| 12 | |
| 13 | #ifndef HW_S390X_VIRTIO_CCW_H |
| 14 | #define HW_S390X_VIRTIO_CCW_H |
| 15 | |
| 16 | #include "qom/object.h" |
| 17 | #include "hw/virtio/virtio-bus.h" |
| 18 | #include "hw/s390x/s390_flic.h" |
| 19 | #include "hw/s390x/css.h" |
| 20 | #include "ccw-device.h" |
| 21 | #include "hw/s390x/css-bridge.h" |
| 22 | |
| 23 | #define VIRTIO_CCW_CU_TYPE 0x3832 |
| 24 | #define VIRTIO_CCW_CHPID_TYPE 0x32 |
| 25 | |
| 26 | #define CCW_CMD_SET_VQ 0x13 |
| 27 | #define CCW_CMD_VDEV_RESET 0x33 |
| 28 | #define CCW_CMD_READ_FEAT 0x12 |
| 29 | #define CCW_CMD_WRITE_FEAT 0x11 |
| 30 | #define CCW_CMD_READ_CONF 0x22 |
| 31 | #define CCW_CMD_WRITE_CONF 0x21 |
| 32 | #define CCW_CMD_WRITE_STATUS 0x31 |
| 33 | #define CCW_CMD_SET_IND 0x43 |
| 34 | #define CCW_CMD_SET_CONF_IND 0x53 |
| 35 | #define CCW_CMD_READ_VQ_CONF 0x32 |
| 36 | #define CCW_CMD_READ_STATUS 0x72 |
| 37 | #define CCW_CMD_SET_IND_ADAPTER 0x73 |
| 38 | #define CCW_CMD_SET_VIRTIO_REV 0x83 |
| 39 | |
| 40 | #define TYPE_VIRTIO_CCW_DEVICE "virtio-ccw-device" |
| 41 | OBJECT_DECLARE_TYPE(VirtioCcwDevice, VirtIOCCWDeviceClass, VIRTIO_CCW_DEVICE) |
| 42 | |
| 43 | typedef struct VirtioBusState VirtioCcwBusState; |
| 44 | typedef struct VirtioBusClass VirtioCcwBusClass; |
| 45 | |
| 46 | #define TYPE_VIRTIO_CCW_BUS "virtio-ccw-bus" |
| 47 | DECLARE_OBJ_CHECKERS(VirtioCcwBusState, VirtioCcwBusClass, |
| 48 | VIRTIO_CCW_BUS, TYPE_VIRTIO_CCW_BUS) |
| 49 | |
| 50 | /* |
| 51 | * modules can reference this symbol to avoid being loaded |
| 52 | * into system emulators without ccw support |
| 53 | */ |
| 54 | extern bool have_virtio_ccw; |
| 55 | |
| 56 | struct VirtIOCCWDeviceClass { |
| 57 | CCWDeviceClass parent_class; |
| 58 | void (*realize)(VirtioCcwDevice *dev, Error **errp); |
| 59 | void (*unrealize)(VirtioCcwDevice *dev); |
| 60 | ResettablePhases parent_phases; |
| 61 | }; |
| 62 | |
| 63 | /* Performance improves when virtqueue kick processing is decoupled from the |
| 64 | * vcpu thread using ioeventfd for some devices. */ |
| 65 | #define VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT 1 |
| 66 | #define VIRTIO_CCW_FLAG_USE_IOEVENTFD (1 << VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT) |
| 67 | |
| 68 | struct VirtioCcwDevice { |
| 69 | CcwDevice parent_obj; |
| 70 | int revision; |
| 71 | uint32_t max_rev; |
| 72 | VirtioBusState bus; |
| 73 | uint32_t flags; |
| 74 | uint8_t thinint_isc; |
| 75 | AdapterRoutes routes; |
| 76 | /* Guest provided values: */ |
| 77 | IndAddr *indicators; |
| 78 | IndAddr *indicators2; |
| 79 | IndAddr *summary_indicator; |
| 80 | uint64_t ind_bit; |
| 81 | bool force_revision_1; |
| 82 | }; |
| 83 | |
| 84 | /* The maximum virtio revision we support. */ |
| 85 | #define VIRTIO_CCW_MAX_REV 2 |
| 86 | static inline int virtio_ccw_rev_max(VirtioCcwDevice *dev) |
| 87 | { |
| 88 | return dev->max_rev; |
| 89 | } |
| 90 | |
| 91 | VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch); |
| 92 | |
| 93 | #endif |