diff options
Diffstat (limited to 'include/hw')
| -rw-r--r-- | include/hw/acpi/aml-build.h | 191 | ||||
| -rw-r--r-- | include/hw/acpi/ich9.h | 4 | ||||
| -rw-r--r-- | include/hw/acpi/pc-hotplug.h | 1 | ||||
| -rw-r--r-- | include/hw/acpi/pcihp.h | 7 | ||||
| -rw-r--r-- | include/hw/i386/pc.h | 1 | ||||
| -rw-r--r-- | include/hw/isa/isa.h | 11 | ||||
| -rw-r--r-- | include/hw/pci/pci.h | 10 | ||||
| -rw-r--r-- | include/hw/qdev-properties.h | 4 | ||||
| -rw-r--r-- | include/hw/virtio/dataplane/vring-accessors.h | 2 | ||||
| -rw-r--r-- | include/hw/virtio/dataplane/vring.h | 2 | ||||
| -rw-r--r-- | include/hw/virtio/virtio-balloon.h | 35 | ||||
| -rw-r--r-- | include/hw/virtio/virtio-blk.h | 77 | ||||
| -rw-r--r-- | include/hw/virtio/virtio-bus.h | 3 | ||||
| -rw-r--r-- | include/hw/virtio/virtio-net.h | 151 | ||||
| -rw-r--r-- | include/hw/virtio/virtio-rng.h | 4 | ||||
| -rw-r--r-- | include/hw/virtio/virtio-scsi.h | 120 | ||||
| -rw-r--r-- | include/hw/virtio/virtio-serial.h | 40 | ||||
| -rw-r--r-- | include/hw/virtio/virtio.h | 71 | ||||
| -rw-r--r-- | include/hw/virtio/virtio_ring.h | 167 |
19 files changed, 257 insertions, 644 deletions
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h new file mode 100644 index 0000000000..17d3beb5a3 --- /dev/null +++ b/include/hw/acpi/aml-build.h @@ -0,0 +1,191 @@ +#ifndef HW_ACPI_GEN_UTILS_H +#define HW_ACPI_GEN_UTILS_H + +#include <stdint.h> +#include <glib.h> +#include "qemu/compiler.h" + +typedef enum { + AML_NO_OPCODE = 0,/* has only data */ + AML_OPCODE, /* has opcode optionally followed by data */ + AML_PACKAGE, /* has opcode and uses PkgLength for its length */ + AML_EXT_PACKAGE, /* Same as AML_PACKAGE but also has 'ExOpPrefix' */ + AML_BUFFER, /* data encoded as 'DefBuffer' */ + AML_RES_TEMPLATE, /* encoded as ResourceTemplate macro */ +} AmlBlockFlags; + +struct Aml { + GArray *buf; + + /*< private >*/ + uint8_t op; + AmlBlockFlags block_flags; +}; +typedef struct Aml Aml; + +typedef enum { + aml_decode10 = 0, + aml_decode16 = 1, +} AmlIODecode; + +typedef enum { + aml_any_acc = 0, + aml_byte_acc = 1, + aml_word_acc = 2, + aml_dword_acc = 3, + aml_qword_acc = 4, + aml_buffer_acc = 5, +} AmlFieldFlags; + +typedef enum { + aml_system_memory = 0x00, + aml_system_io = 0x01, +} AmlRegionSpace; + +typedef enum { + aml_memory_range = 0, + aml_io_range = 1, + aml_bus_number_range = 2, +} AmlResourceType; + +typedef enum { + aml_sub_decode = 1 << 1, + aml_pos_decode = 0 +} AmlDecode; + +typedef enum { + aml_max_fixed = 1 << 3, + aml_max_not_fixed = 0, +} AmlMaxFixed; + +typedef enum { + aml_min_fixed = 1 << 2, + aml_min_not_fixed = 0 +} AmlMinFixed; + +/* + * ACPI 1.0b: Table 6-26 I/O Resource Flag (Resource Type = 1) Definitions + * _RNG field definition + */ +typedef enum { + aml_isa_only = 1, + aml_non_isa_only = 2, + aml_entire_range = 3, +} AmlISARanges; + +/* + * ACPI 1.0b: Table 6-25 Memory Resource Flag (Resource Type = 0) Definitions + * _MEM field definition + */ +typedef enum { + aml_non_cacheable = 0, + aml_cacheable = 1, + aml_write_combining = 2, + aml_prefetchable = 3, +} AmlCacheble; + +/* + * ACPI 1.0b: Table 6-25 Memory Resource Flag (Resource Type = 0) Definitions + * _RW field definition + */ +typedef enum { + aml_ReadOnly = 0, + aml_ReadWrite = 1, +} AmlReadAndWrite; + +/** + * init_aml_allocator: + * + * Called for initializing API allocator which allow to use + * AML API. + * Returns: toplevel container which accumulates all other + * AML elements for a table. + */ +Aml *init_aml_allocator(void); + +/** + * free_aml_allocator: + * + * Releases all elements used by AML API, frees associated memory + * and invalidates AML allocator. After this call @init_aml_allocator + * should be called again if AML API is to be used again. + */ +void free_aml_allocator(void); + +/** + * aml_append: + * @parent_ctx: context to which @child element is added + * @child: element that is copied into @parent_ctx context + * + * Joins Aml elements together and helps to construct AML tables + * Examle of usage: + * Aml *table = aml_def_block("SSDT", ...); + * Aml *sb = aml_scope("\_SB"); + * Aml *dev = aml_device("PCI0"); + * + * aml_append(dev, aml_name_decl("HID", aml_eisaid("PNP0A03"))); + * aml_append(sb, dev); + * aml_append(table, sb); + */ +void aml_append(Aml *parent_ctx, Aml *child); + +/* non block AML object primitives */ +Aml *aml_name(const char *name_format, ...) GCC_FMT_ATTR(1, 2); +Aml *aml_name_decl(const char *name, Aml *val); +Aml *aml_return(Aml *val); +Aml *aml_int(const uint64_t val); +Aml *aml_arg(int pos); +Aml *aml_store(Aml *val, Aml *target); +Aml *aml_and(Aml *arg1, Aml *arg2); +Aml *aml_notify(Aml *arg1, Aml *arg2); +Aml *aml_call1(const char *method, Aml *arg1); +Aml *aml_call2(const char *method, Aml *arg1, Aml *arg2); +Aml *aml_call3(const char *method, Aml *arg1, Aml *arg2, Aml *arg3); +Aml *aml_call4(const char *method, Aml *arg1, Aml *arg2, Aml *arg3, Aml *arg4); +Aml *aml_io(AmlIODecode dec, uint16_t min_base, uint16_t max_base, + uint8_t aln, uint8_t len); +Aml *aml_operation_region(const char *name, AmlRegionSpace rs, + uint32_t offset, uint32_t len); +Aml *aml_irq_no_flags(uint8_t irq); +Aml *aml_named_field(const char *name, unsigned length); +Aml *aml_reserved_field(unsigned length); +Aml *aml_local(int num); +Aml *aml_string(const char *name_format, ...) GCC_FMT_ATTR(1, 2); +Aml *aml_equal(Aml *arg1, Aml *arg2); +Aml *aml_processor(uint8_t proc_id, uint32_t pblk_addr, uint8_t pblk_len, + const char *name_format, ...) GCC_FMT_ATTR(4, 5); +Aml *aml_eisaid(const char *str); +Aml *aml_word_bus_number(AmlMinFixed min_fixed, AmlMaxFixed max_fixed, + AmlDecode dec, uint16_t addr_gran, + uint16_t addr_min, uint16_t addr_max, + uint16_t addr_trans, uint16_t len); +Aml *aml_word_io(AmlMinFixed min_fixed, AmlMaxFixed max_fixed, + AmlDecode dec, AmlISARanges isa_ranges, + uint16_t addr_gran, uint16_t addr_min, + uint16_t addr_max, uint16_t addr_trans, + uint16_t len); +Aml *aml_dword_memory(AmlDecode dec, AmlMinFixed min_fixed, + AmlMaxFixed max_fixed, AmlCacheble cacheable, + AmlReadAndWrite read_and_write, + uint32_t addr_gran, uint32_t addr_min, + uint32_t addr_max, uint32_t addr_trans, + uint32_t len); +Aml *aml_qword_memory(AmlDecode dec, AmlMinFixed min_fixed, + AmlMaxFixed max_fixed, AmlCacheble cacheable, + AmlReadAndWrite read_and_write, + uint64_t addr_gran, uint64_t addr_min, + uint64_t addr_max, uint64_t addr_trans, + uint64_t len); + +/* Block AML object primitives */ +Aml *aml_scope(const char *name_format, ...) GCC_FMT_ATTR(1, 2); +Aml *aml_device(const char *name_format, ...) GCC_FMT_ATTR(1, 2); +Aml *aml_method(const char *name, int arg_count); +Aml *aml_if(Aml *predicate); +Aml *aml_package(uint8_t num_elements); +Aml *aml_buffer(void); +Aml *aml_resource_template(void); +Aml *aml_field(const char *name, AmlFieldFlags flags); +Aml *aml_varpackage(uint32_t num_elements); + +#endif diff --git a/include/hw/acpi/ich9.h b/include/hw/acpi/ich9.h index 12d7a7af5f..c2d3dba0c7 100644 --- a/include/hw/acpi/ich9.h +++ b/include/hw/acpi/ich9.h @@ -63,6 +63,10 @@ extern const VMStateDescription vmstate_ich9_pm; void ich9_pm_add_properties(Object *obj, ICH9LPCPMRegs *pm, Error **errp); void ich9_pm_device_plug_cb(ICH9LPCPMRegs *pm, DeviceState *dev, Error **errp); +void ich9_pm_device_unplug_request_cb(ICH9LPCPMRegs *pm, DeviceState *dev, + Error **errp); +void ich9_pm_device_unplug_cb(ICH9LPCPMRegs *pm, DeviceState *dev, + Error **errp); void ich9_pm_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list); #endif /* HW_ACPI_ICH9_H */ diff --git a/include/hw/acpi/pc-hotplug.h b/include/hw/acpi/pc-hotplug.h index b9db29576c..efa6ed7b7b 100644 --- a/include/hw/acpi/pc-hotplug.h +++ b/include/hw/acpi/pc-hotplug.h @@ -28,6 +28,7 @@ #define ICH9_CPU_HOTPLUG_IO_BASE 0x0CD8 #define PIIX4_CPU_HOTPLUG_IO_BASE 0xaf00 +#define CPU_HOTPLUG_RESOURCE_DEVICE PRES #define ACPI_MEMORY_HOTPLUG_IO_LEN 24 #define ACPI_MEMORY_HOTPLUG_BASE 0x0a00 diff --git a/include/hw/acpi/pcihp.h b/include/hw/acpi/pcihp.h index 9323838319..f3526d4aaf 100644 --- a/include/hw/acpi/pcihp.h +++ b/include/hw/acpi/pcihp.h @@ -32,6 +32,9 @@ #include "hw/acpi/acpi.h" #include "migration/vmstate.h" +#define ACPI_PCIHP_IO_BASE_PROP "acpi-pcihp-io-base" +#define ACPI_PCIHP_IO_LEN_PROP "acpi-pcihp-io-len" + typedef struct AcpiPciHpPciStatus { uint32_t up; uint32_t down; @@ -48,9 +51,11 @@ typedef struct AcpiPciHpState { PCIBus *root; MemoryRegion io; bool legacy_piix; + uint16_t io_base; + uint16_t io_len; } AcpiPciHpState; -void acpi_pcihp_init(AcpiPciHpState *, PCIBus *root, +void acpi_pcihp_init(Object *owner, AcpiPciHpState *, PCIBus *root, MemoryRegion *address_space_io, bool bridges_enabled); void acpi_pcihp_device_plug_cb(ACPIREGS *ar, qemu_irq irq, AcpiPciHpState *s, diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index 08ab67d7fd..1b35168e96 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -104,6 +104,7 @@ struct PcGuestInfo { int legacy_acpi_table_size; bool has_acpi_build; bool has_reserved_memory; + bool rsdp_in_ram; }; /* parallel.c */ diff --git a/include/hw/isa/isa.h b/include/hw/isa/isa.h index cf7bd343c7..f21ceaafc6 100644 --- a/include/hw/isa/isa.h +++ b/include/hw/isa/isa.h @@ -21,10 +21,17 @@ #define ISA_BUS(obj) OBJECT_CHECK(ISABus, (obj), TYPE_ISA_BUS) #define TYPE_APPLE_SMC "isa-applesmc" +#define APPLESMC_MAX_DATA_LENGTH 32 +#define APPLESMC_PROP_IO_BASE "iobase" -static inline bool applesmc_find(void) +static inline uint16_t applesmc_port(void) { - return object_resolve_path_type("", TYPE_APPLE_SMC, NULL); + Object *obj = object_resolve_path_type("", TYPE_APPLE_SMC, NULL); + + if (obj) { + return object_property_get_int(obj, APPLESMC_PROP_IO_BASE, NULL); + } + return 0; } typedef struct ISADeviceClass { diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h index bdee464e61..be2d9b8703 100644 --- a/include/hw/pci/pci.h +++ b/include/hw/pci/pci.h @@ -185,7 +185,8 @@ typedef struct PCIINTxRoute { typedef struct PCIDeviceClass { DeviceClass parent_class; - int (*init)(PCIDevice *dev); + void (*realize)(PCIDevice *dev, Error **errp); + int (*init)(PCIDevice *dev);/* TODO convert to realize() and remove */ PCIUnregisterFunc *exit; PCIConfigReadFunc *config_read; PCIConfigWriteFunc *config_write; @@ -370,9 +371,6 @@ void pci_device_set_intx_routing_notifier(PCIDevice *dev, PCIINTxRoutingNotifier notifier); void pci_device_reset(PCIDevice *dev); -PCIDevice *pci_nic_init(NICInfo *nd, PCIBus *rootbus, - const char *default_model, - const char *default_devaddr); PCIDevice *pci_nic_init_nofail(NICInfo *nd, PCIBus *rootbus, const char *default_model, const char *default_devaddr); @@ -402,12 +400,8 @@ PCIBus *pci_device_root_bus(const PCIDevice *d); const char *pci_root_bus_path(PCIDevice *dev); PCIDevice *pci_find_device(PCIBus *bus, int bus_num, uint8_t devfn); int pci_qdev_find_device(const char *id, PCIDevice **pdev); -PCIBus *pci_get_bus_devfn(int *devfnp, PCIBus *root, const char *devaddr); void pci_bus_get_w64_range(PCIBus *bus, Range *range); -int pci_parse_devaddr(const char *addr, int *domp, int *busp, - unsigned int *slotp, unsigned int *funcp); - void pci_device_deassert_intx(PCIDevice *dev); typedef AddressSpace *(*PCIIOMMUFunc)(PCIBus *, void *, int); diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h index 070006c715..57ee363b89 100644 --- a/include/hw/qdev-properties.h +++ b/include/hw/qdev-properties.h @@ -180,9 +180,7 @@ void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value); void qdev_prop_register_global(GlobalProperty *prop); void qdev_prop_register_global_list(GlobalProperty *props); int qdev_prop_check_globals(void); -void qdev_prop_set_globals(DeviceState *dev, Error **errp); -void qdev_prop_set_globals_for_type(DeviceState *dev, const char *typename, - Error **errp); +void qdev_prop_set_globals(DeviceState *dev); void error_set_from_qdev_prop_error(Error **errp, int ret, DeviceState *dev, Property *prop, const char *value); diff --git a/include/hw/virtio/dataplane/vring-accessors.h b/include/hw/virtio/dataplane/vring-accessors.h index b508b87900..815c19b6ef 100644 --- a/include/hw/virtio/dataplane/vring-accessors.h +++ b/include/hw/virtio/dataplane/vring-accessors.h @@ -1,7 +1,7 @@ #ifndef VRING_ACCESSORS_H #define VRING_ACCESSORS_H -#include "hw/virtio/virtio_ring.h" +#include "standard-headers/linux/virtio_ring.h" #include "hw/virtio/virtio.h" #include "hw/virtio/virtio-access.h" diff --git a/include/hw/virtio/dataplane/vring.h b/include/hw/virtio/dataplane/vring.h index e42c0fc9cc..8d97db9e2d 100644 --- a/include/hw/virtio/dataplane/vring.h +++ b/include/hw/virtio/dataplane/vring.h @@ -18,7 +18,7 @@ #define VRING_H #include "qemu-common.h" -#include "hw/virtio/virtio_ring.h" +#include "standard-headers/linux/virtio_ring.h" #include "hw/virtio/virtio.h" typedef struct { diff --git a/include/hw/virtio/virtio-balloon.h b/include/hw/virtio/virtio-balloon.h index f863bfe27a..4ab8f541b0 100644 --- a/include/hw/virtio/virtio-balloon.h +++ b/include/hw/virtio/virtio-balloon.h @@ -15,6 +15,7 @@ #ifndef _QEMU_VIRTIO_BALLOON_H #define _QEMU_VIRTIO_BALLOON_H +#include "standard-headers/linux/virtio_balloon.h" #include "hw/virtio/virtio.h" #include "hw/pci/pci.h" @@ -22,39 +23,7 @@ #define VIRTIO_BALLOON(obj) \ OBJECT_CHECK(VirtIOBalloon, (obj), TYPE_VIRTIO_BALLOON) -/* from Linux's linux/virtio_balloon.h */ - -/* The ID for virtio_balloon */ -#define VIRTIO_ID_BALLOON 5 - -/* The feature bitmap for virtio balloon */ -#define VIRTIO_BALLOON_F_MUST_TELL_HOST 0 /* Tell before reclaiming pages */ -#define VIRTIO_BALLOON_F_STATS_VQ 1 /* Memory stats virtqueue */ - -/* Size of a PFN in the balloon interface. */ -#define VIRTIO_BALLOON_PFN_SHIFT 12 - -struct virtio_balloon_config -{ - /* Number of pages host wants Guest to give up. */ - uint32_t num_pages; - /* Number of pages we've actually got in balloon. */ - uint32_t actual; -}; - -/* Memory Statistics */ -#define VIRTIO_BALLOON_S_SWAP_IN 0 /* Amount of memory swapped in */ -#define VIRTIO_BALLOON_S_SWAP_OUT 1 /* Amount of memory swapped out */ -#define VIRTIO_BALLOON_S_MAJFLT 2 /* Number of major faults */ -#define VIRTIO_BALLOON_S_MINFLT 3 /* Number of minor faults */ -#define VIRTIO_BALLOON_S_MEMFREE 4 /* Total amount of free memory */ -#define VIRTIO_BALLOON_S_MEMTOT 5 /* Total amount of memory */ -#define VIRTIO_BALLOON_S_NR 6 - -typedef struct VirtIOBalloonStat { - uint16_t tag; - uint64_t val; -} QEMU_PACKED VirtIOBalloonStat; +typedef struct virtio_balloon_stat VirtIOBalloonStat; typedef struct VirtIOBalloon { VirtIODevice parent_obj; diff --git a/include/hw/virtio/virtio-blk.h b/include/hw/virtio/virtio-blk.h index fc7d311a43..b3ffcd96b8 100644 --- a/include/hw/virtio/virtio-blk.h +++ b/include/hw/virtio/virtio-blk.h @@ -14,6 +14,7 @@ #ifndef _QEMU_VIRTIO_BLK_H #define _QEMU_VIRTIO_BLK_H +#include "standard-headers/linux/virtio_blk.h" #include "hw/virtio/virtio.h" #include "hw/block/block.h" #include "sysemu/iothread.h" @@ -23,88 +24,12 @@ #define VIRTIO_BLK(obj) \ OBJECT_CHECK(VirtIOBlock, (obj), TYPE_VIRTIO_BLK) -/* from Linux's linux/virtio_blk.h */ - -/* The ID for virtio_block */ -#define VIRTIO_ID_BLOCK 2 - -/* Feature bits */ -#define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */ -#define VIRTIO_BLK_F_SIZE_MAX 1 /* Indicates maximum segment size */ -#define VIRTIO_BLK_F_SEG_MAX 2 /* Indicates maximum # of segments */ -#define VIRTIO_BLK_F_GEOMETRY 4 /* Indicates support of legacy geometry */ -#define VIRTIO_BLK_F_RO 5 /* Disk is read-only */ -#define VIRTIO_BLK_F_BLK_SIZE 6 /* Block size of disk is available*/ -#define VIRTIO_BLK_F_SCSI 7 /* Supports scsi command passthru */ -/* #define VIRTIO_BLK_F_IDENTIFY 8 ATA IDENTIFY supported, DEPRECATED */ -#define VIRTIO_BLK_F_WCE 9 /* write cache enabled */ -#define VIRTIO_BLK_F_TOPOLOGY 10 /* Topology information is available */ -#define VIRTIO_BLK_F_CONFIG_WCE 11 /* write cache configurable */ - -#define VIRTIO_BLK_ID_BYTES 20 /* ID string length */ - -struct virtio_blk_config -{ - uint64_t capacity; - uint32_t size_max; - uint32_t seg_max; - uint16_t cylinders; - uint8_t heads; - uint8_t sectors; - uint32_t blk_size; - uint8_t physical_block_exp; - uint8_t alignment_offset; - uint16_t min_io_size; - uint32_t opt_io_size; - uint8_t wce; -} QEMU_PACKED; - -/* These two define direction. */ -#define VIRTIO_BLK_T_IN 0 -#define VIRTIO_BLK_T_OUT 1 - -/* This bit says it's a scsi command, not an actual read or write. */ -#define VIRTIO_BLK_T_SCSI_CMD 2 - -/* Flush the volatile write cache */ -#define VIRTIO_BLK_T_FLUSH 4 - -/* return the device ID string */ -#define VIRTIO_BLK_T_GET_ID 8 - -/* Barrier before this op. */ -#define VIRTIO_BLK_T_BARRIER 0x80000000 - -/* This is the first element of the read scatter-gather list. */ -struct virtio_blk_outhdr -{ - /* VIRTIO_BLK_T* */ - uint32_t type; - /* io priority. */ - uint32_t ioprio; - /* Sector (ie. 512 byte offset) */ - uint64_t sector; -}; - -#define VIRTIO_BLK_S_OK 0 -#define VIRTIO_BLK_S_IOERR 1 -#define VIRTIO_BLK_S_UNSUPP 2 - /* This is the last element of the write scatter-gather list */ struct virtio_blk_inhdr { unsigned char status; }; -/* SCSI pass-through header */ -struct virtio_scsi_inhdr -{ - uint32_t errors; - uint32_t data_len; - uint32_t sense_len; - uint32_t residual; -}; - struct VirtIOBlkConf { BlockConf conf; diff --git a/include/hw/virtio/virtio-bus.h b/include/hw/virtio/virtio-bus.h index 0756545d4d..0d2e7b49b2 100644 --- a/include/hw/virtio/virtio-bus.h +++ b/include/hw/virtio/virtio-bus.h @@ -84,9 +84,6 @@ size_t virtio_bus_get_vdev_config_len(VirtioBusState *bus); /* Get the features of the plugged device. */ uint32_t virtio_bus_get_vdev_features(VirtioBusState *bus, uint32_t requested_features); -/* Set the features of the plugged device. */ -void virtio_bus_set_vdev_features(VirtioBusState *bus, - uint32_t requested_features); /* Get bad features of the plugged device. */ uint32_t virtio_bus_get_vdev_bad_features(VirtioBusState *bus); /* Get config of the plugged device. */ diff --git a/include/hw/virtio/virtio-net.h b/include/hw/virtio/virtio-net.h index 6ceb5aa92e..4c2fe83b6b 100644 --- a/include/hw/virtio/virtio-net.h +++ b/include/hw/virtio/virtio-net.h @@ -14,49 +14,15 @@ #ifndef _QEMU_VIRTIO_NET_H #define _QEMU_VIRTIO_NET_H +#include "standard-headers/linux/virtio_net.h" #include "hw/virtio/virtio.h" -#include "hw/pci/pci.h" #define TYPE_VIRTIO_NET "virtio-net-device" #define VIRTIO_NET(obj) \ OBJECT_CHECK(VirtIONet, (obj), TYPE_VIRTIO_NET) -#define ETH_ALEN 6 - -/* from Linux's virtio_net.h */ - -/* The ID for virtio_net */ -#define VIRTIO_ID_NET 1 - -/* The feature bitmap for virtio net */ -#define VIRTIO_NET_F_CSUM 0 /* Host handles pkts w/ partial csum */ -#define VIRTIO_NET_F_GUEST_CSUM 1 /* Guest handles pkts w/ partial csum */ #define VIRTIO_NET_F_CTRL_GUEST_OFFLOADS 2 /* Control channel offload * configuration support */ -#define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ -#define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */ -#define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ -#define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */ -#define VIRTIO_NET_F_GUEST_ECN 9 /* Guest can handle TSO[6] w/ ECN in. */ -#define VIRTIO_NET_F_GUEST_UFO 10 /* Guest can handle UFO in. */ -#define VIRTIO_NET_F_HOST_TSO4 11 /* Host can handle TSOv4 in. */ -#define VIRTIO_NET_F_HOST_TSO6 12 /* Host can handle TSOv6 in. */ -#define VIRTIO_NET_F_HOST_ECN 13 /* Host can handle TSO[6] w/ ECN in. */ -#define VIRTIO_NET_F_HOST_UFO 14 /* Host can handle UFO in. */ -#define VIRTIO_NET_F_MRG_RXBUF 15 /* Host can merge receive buffers. */ -#define VIRTIO_NET_F_STATUS 16 /* virtio_net_config.status available */ -#define VIRTIO_NET_F_CTRL_VQ 17 /* Control channel available */ -#define VIRTIO_NET_F_CTRL_RX 18 /* Control channel RX mode support */ -#define VIRTIO_NET_F_CTRL_VLAN 19 /* Control channel VLAN filtering */ -#define VIRTIO_NET_F_CTRL_RX_EXTRA 20 /* Extra RX mode control support */ -#define VIRTIO_NET_F_GUEST_ANNOUNCE 21 /* Guest can announce itself */ -#define VIRTIO_NET_F_MQ 22 /* Device supports Receive Flow - * Steering */ - -#define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */ - -#define VIRTIO_NET_S_LINK_UP 1 /* Link is up */ -#define VIRTIO_NET_S_ANNOUNCE 2 /* Announcement is needed */ #define TX_TIMER_INTERVAL 150000 /* 150 us */ @@ -77,72 +43,6 @@ typedef struct virtio_net_conf /* Maximum packet size we can receive from tap device: header + 64k */ #define VIRTIO_NET_MAX_BUFSIZE (sizeof(struct virtio_net_hdr) + (64 << 10)) -struct virtio_net_config -{ - /* The config defining mac address ($ETH_ALEN bytes) */ - uint8_t mac[ETH_ALEN]; - /* See VIRTIO_NET_F_STATUS and VIRTIO_NET_S_* above */ - uint16_t status; - /* Max virtqueue pairs supported by the device */ - uint16_t max_virtqueue_pairs; -} QEMU_PACKED; - -/* - * Control virtqueue data structures - * - * The control virtqueue expects a header in the first sg entry - * and an ack/status response in the last entry. Data for the - * command goes in between. - */ -struct virtio_net_ctrl_hdr { - uint8_t class; - uint8_t cmd; -}; - -typedef uint8_t virtio_net_ctrl_ack; - -#define VIRTIO_NET_OK 0 -#define VIRTIO_NET_ERR 1 - -/* - * Control the RX mode, ie. promisucous, allmulti, etc... - * All commands require an "out" sg entry containing a 1 byte - * state value, zero = disable, non-zero = enable. Commands - * 0 and 1 are supported with the VIRTIO_NET_F_CTRL_RX feature. - * Commands 2-5 are added with VIRTIO_NET_F_CTRL_RX_EXTRA. - */ -#define VIRTIO_NET_CTRL_RX 0 - #define VIRTIO_NET_CTRL_RX_PROMISC 0 - #define VIRTIO_NET_CTRL_RX_ALLMULTI 1 - #define VIRTIO_NET_CTRL_RX_ALLUNI 2 - #define VIRTIO_NET_CTRL_RX_NOMULTI 3 - #define VIRTIO_NET_CTRL_RX_NOUNI 4 - #define VIRTIO_NET_CTRL_RX_NOBCAST 5 - -/* - * Control the MAC - * - * The MAC filter table is managed by the hypervisor, the guest should - * assume the size is infinite. Filtering should be considered - * non-perfect, ie. based on hypervisor resources, the guest may - * received packets from sources not specified in the filter list. - * - * In addition to the class/cmd header, the TABLE_SET command requires - * two out scatterlists. Each contains a 4 byte count of entries followed - * by a concatenated byte stream of the ETH_ALEN MAC addresses. The - * first sg list contains unicast addresses, the second is for multicast. - * This functionality is present if the VIRTIO_NET_F_CTRL_RX feature - * is available. - * - * The ADDR_SET command requests one out scatterlist, it contains a - * 6 bytes MAC address. This functionality is present if the - * VIRTIO_NET_F_CTRL_MAC_ADDR feature is available. - */ -struct virtio_net_ctrl_mac { - uint32_t entries; - uint8_t macs[][ETH_ALEN]; -}; - typedef struct VirtIONetQueue { VirtQueue *rx_vq; VirtQueue *tx_vq; @@ -199,55 +99,6 @@ typedef struct VirtIONet { int announce_counter; } VirtIONet; -#define VIRTIO_NET_CTRL_MAC 1 - #define VIRTIO_NET_CTRL_MAC_TABLE_SET 0 - #define VIRTIO_NET_CTRL_MAC_ADDR_SET 1 - -/* - * Control VLAN filtering - * - * The VLAN filter table is controlled via a simple ADD/DEL interface. - * VLAN IDs not added may be filterd by the hypervisor. Del is the - * opposite of add. Both commands expect an out entry containing a 2 - * byte VLAN ID. VLAN filterting is available with the - * VIRTIO_NET_F_CTRL_VLAN feature bit. - */ -#define VIRTIO_NET_CTRL_VLAN 2 - #define VIRTIO_NET_CTRL_VLAN_ADD 0 - #define VIRTIO_NET_CTRL_VLAN_DEL 1 - -/* - * Control link announce acknowledgement - * - * VIRTIO_NET_S_ANNOUNCE bit in the status field requests link announcement from - * guest driver. The driver is notified by config space change interrupt. The - * command VIRTIO_NET_CTRL_ANNOUNCE_ACK is used to indicate that the driver has - * received the notification. It makes the device clear the bit - * VIRTIO_NET_S_ANNOUNCE in the status field. - */ -#define VIRTIO_NET_CTRL_ANNOUNCE 3 - #define VIRTIO_NET_CTRL_ANNOUNCE_ACK 0 - -/* - * Control Multiqueue - * - * The command VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET - * enables multiqueue, specifying the number of the transmit and - * receive queues that will be used. After the command is consumed and acked by - * the device, the device will not steer new packets on receive virtqueues - * other than specified nor read from transmit virtqueues other than specified. - * Accordingly, driver should not transmit new packets on virtqueues other than - * specified. - */ -struct virtio_net_ctrl_mq { - uint16_t virtqueue_pairs; -}; - -#define VIRTIO_NET_CTRL_MQ 4 - #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET 0 - #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1 - #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000 - /* * Control network offloads * diff --git a/include/hw/virtio/virtio-rng.h b/include/hw/virtio/virtio-rng.h index 14e85a5a3a..7702ff4749 100644 --- a/include/hw/virtio/virtio-rng.h +++ b/include/hw/virtio/virtio-rng.h @@ -14,6 +14,7 @@ #include "sysemu/rng.h" #include "sysemu/rng-random.h" +#include "standard-headers/linux/virtio_rng.h" #define TYPE_VIRTIO_RNG "virtio-rng-device" #define VIRTIO_RNG(obj) \ @@ -21,9 +22,6 @@ #define VIRTIO_RNG_GET_PARENT_CLASS(obj) \ OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_RNG) -/* The Virtio ID for the virtio rng device */ -#define VIRTIO_ID_RNG 4 - struct VirtIORNGConf { RngBackend *rng; uint64_t max_bytes; diff --git a/include/hw/virtio/virtio-scsi.h b/include/hw/virtio/virtio-scsi.h index c122e7ae5c..de2c739d22 100644 --- a/include/hw/virtio/virtio-scsi.h +++ b/include/hw/virtio/virtio-scsi.h @@ -14,6 +14,7 @@ #ifndef _QEMU_VIRTIO_SCSI_H #define _QEMU_VIRTIO_SCSI_H +#include "standard-headers/linux/virtio_scsi.h" #include "hw/virtio/virtio.h" #include "hw/pci/pci.h" #include "hw/scsi/scsi.h" @@ -28,15 +29,6 @@ #define VIRTIO_SCSI(obj) \ OBJECT_CHECK(VirtIOSCSI, (obj), TYPE_VIRTIO_SCSI) - -/* The ID for virtio_scsi */ -#define VIRTIO_ID_SCSI 8 - -/* Feature Bits */ -#define VIRTIO_SCSI_F_INOUT 0 -#define VIRTIO_SCSI_F_HOTPLUG 1 -#define VIRTIO_SCSI_F_CHANGE 2 - #define VIRTIO_SCSI_VQ_SIZE 128 #define VIRTIO_SCSI_CDB_SIZE 32 #define VIRTIO_SCSI_SENSE_SIZE 96 @@ -44,108 +36,14 @@ #define VIRTIO_SCSI_MAX_TARGET 255 #define VIRTIO_SCSI_MAX_LUN 16383 -/* Response codes */ -#define VIRTIO_SCSI_S_OK 0 -#define VIRTIO_SCSI_S_OVERRUN 1 -#define VIRTIO_SCSI_S_ABORTED 2 -#define VIRTIO_SCSI_S_BAD_TARGET 3 -#define VIRTIO_SCSI_S_RESET 4 -#define VIRTIO_SCSI_S_BUSY 5 -#define VIRTIO_SCSI_S_TRANSPORT_FAILURE 6 -#define VIRTIO_SCSI_S_TARGET_FAILURE 7 -#define VIRTIO_SCSI_S_NEXUS_FAILURE 8 -#define VIRTIO_SCSI_S_FAILURE 9 -#define VIRTIO_SCSI_S_FUNCTION_SUCCEEDED 10 -#define VIRTIO_SCSI_S_FUNCTION_REJECTED 11 -#define VIRTIO_SCSI_S_INCORRECT_LUN 12 - -/* Controlq type codes. */ -#define VIRTIO_SCSI_T_TMF 0 -#define VIRTIO_SCSI_T_AN_QUERY 1 -#define VIRTIO_SCSI_T_AN_SUBSCRIBE 2 - -/* Valid TMF subtypes. */ -#define VIRTIO_SCSI_T_TMF_ABORT_TASK 0 -#define VIRTIO_SCSI_T_TMF_ABORT_TASK_SET 1 -#define VIRTIO_SCSI_T_TMF_CLEAR_ACA 2 -#define VIRTIO_SCSI_T_TMF_CLEAR_TASK_SET 3 -#define VIRTIO_SCSI_T_TMF_I_T_NEXUS_RESET 4 -#define VIRTIO_SCSI_T_TMF_LOGICAL_UNIT_RESET 5 -#define VIRTIO_SCSI_T_TMF_QUERY_TASK 6 -#define VIRTIO_SCSI_T_TMF_QUERY_TASK_SET 7 - -/* Events. */ -#define VIRTIO_SCSI_T_EVENTS_MISSED 0x80000000 -#define VIRTIO_SCSI_T_NO_EVENT 0 -#define VIRTIO_SCSI_T_TRANSPORT_RESET 1 -#define VIRTIO_SCSI_T_ASYNC_NOTIFY 2 -#define VIRTIO_SCSI_T_PARAM_CHANGE 3 - -/* Reasons for transport reset event */ -#define VIRTIO_SCSI_EVT_RESET_HARD 0 -#define VIRTIO_SCSI_EVT_RESET_RESCAN 1 -#define VIRTIO_SCSI_EVT_RESET_REMOVED 2 - -/* SCSI command request, followed by CDB and data-out */ -typedef struct { - uint8_t lun[8]; /* Logical Unit Number */ - uint64_t tag; /* Command identifier */ - uint8_t task_attr; /* Task attribute */ - uint8_t prio; - uint8_t crn; -} QEMU_PACKED VirtIOSCSICmdReq; - -/* Response, followed by sense data and data-in */ -typedef struct { - uint32_t sense_len; /* Sense data length */ - uint32_t resid; /* Residual bytes in data buffer */ - uint16_t status_qualifier; /* Status qualifier */ - uint8_t status; /* Command completion status */ - uint8_t response; /* Response values */ -} QEMU_PACKED VirtIOSCSICmdResp; - -/* Task Management Request */ -typedef struct { - uint32_t type; - uint32_t subtype; - uint8_t lun[8]; - uint64_t tag; -} QEMU_PACKED VirtIOSCSICtrlTMFReq; - -typedef struct { - uint8_t response; -} QEMU_PACKED VirtIOSCSICtrlTMFResp; - -/* Asynchronous notification query/subscription */ -typedef struct { - uint32_t type; - uint8_t lun[8]; - uint32_t event_requested; -} QEMU_PACKED VirtIOSCSICtrlANReq; - -typedef struct { - uint32_t event_actual; - uint8_t response; -} QEMU_PACKED VirtIOSCSICtrlANResp; - -typedef struct { - uint32_t event; - uint8_t lun[8]; - uint32_t reason; -} QEMU_PACKED VirtIOSCSIEvent; - -typedef struct { - uint32_t num_queues; - uint32_t seg_max; - uint32_t max_sectors; - uint32_t cmd_per_lun; - uint32_t event_info_size; - uint32_t sense_size; - uint32_t cdb_size; - uint16_t max_channel; - uint16_t max_target; - uint32_t max_lun; -} QEMU_PACKED VirtIOSCSIConfig; +typedef struct virtio_scsi_cmd_req VirtIOSCSICmdReq; +typedef struct virtio_scsi_cmd_resp VirtIOSCSICmdResp; +typedef struct virtio_scsi_ctrl_tmf_req VirtIOSCSICtrlTMFReq; +typedef struct virtio_scsi_ctrl_tmf_resp VirtIOSCSICtrlTMFResp; +typedef struct virtio_scsi_ctrl_an_req VirtIOSCSICtrlANReq; +typedef struct virtio_scsi_ctrl_an_resp VirtIOSCSICtrlANResp; +typedef struct virtio_scsi_event VirtIOSCSIEvent; +typedef struct virtio_scsi_config VirtIOSCSIConfig; struct VirtIOSCSIConf { uint32_t num_queues; diff --git a/include/hw/virtio/virtio-serial.h b/include/hw/virtio/virtio-serial.h index 11af978a96..ccf8459829 100644 --- a/include/hw/virtio/virtio-serial.h +++ b/include/hw/virtio/virtio-serial.h @@ -15,53 +15,15 @@ #ifndef _QEMU_VIRTIO_SERIAL_H #define _QEMU_VIRTIO_SERIAL_H +#include "standard-headers/linux/virtio_console.h" #include "hw/qdev.h" #include "hw/virtio/virtio.h" -/* == Interface shared between the guest kernel and qemu == */ - -/* The Virtio ID for virtio console / serial ports */ -#define VIRTIO_ID_CONSOLE 3 - -/* Features supported */ -#define VIRTIO_CONSOLE_F_MULTIPORT 1 - -#define VIRTIO_CONSOLE_BAD_ID (~(uint32_t)0) - -struct virtio_console_config { - /* - * These two fields are used by VIRTIO_CONSOLE_F_SIZE which - * isn't implemented here yet - */ - uint16_t cols; - uint16_t rows; - - uint32_t max_nr_ports; -} QEMU_PACKED; - -struct virtio_console_control { - uint32_t id; /* Port number */ - uint16_t event; /* The kind of control event (see below) */ - uint16_t value; /* Extra information for the key */ -}; - struct virtio_serial_conf { /* Max. number of ports we can have for a 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 -#define VIRTIO_CONSOLE_PORT_REMOVE 2 -#define VIRTIO_CONSOLE_PORT_READY 3 -#define VIRTIO_CONSOLE_CONSOLE_PORT 4 -#define VIRTIO_CONSOLE_RESIZE 5 -#define VIRTIO_CONSOLE_PORT_OPEN 6 -#define VIRTIO_CONSOLE_PORT_NAME 7 - -/* == In-qemu interface == */ - #define TYPE_VIRTIO_SERIAL_PORT "virtio-serial-port" #define VIRTIO_SERIAL_PORT(obj) \ OBJECT_CHECK(VirtIOSerialPort, (obj), TYPE_VIRTIO_SERIAL_PORT) diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index f24997d218..d95f8b6d50 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -19,56 +19,12 @@ #include "hw/qdev.h" #include "sysemu/sysemu.h" #include "qemu/event_notifier.h" -#ifdef CONFIG_VIRTFS -#include "hw/virtio/virtio-9p.h" -#endif +#include "standard-headers/linux/virtio_config.h" +#include "standard-headers/linux/virtio_ring.h" -/* from Linux's linux/virtio_config.h */ - -/* Status byte for guest to report progress, and synchronize features. */ -/* We have seen device and processed generic fields (VIRTIO_CONFIG_F_VIRTIO) */ -#define VIRTIO_CONFIG_S_ACKNOWLEDGE 1 -/* We have found a driver for the device. */ -#define VIRTIO_CONFIG_S_DRIVER 2 -/* Driver has used its parts of the config, and is happy */ -#define VIRTIO_CONFIG_S_DRIVER_OK 4 -/* We've given up on this device. */ -#define VIRTIO_CONFIG_S_FAILED 0x80 - -/* Some virtio feature bits (currently bits 28 through 31) are reserved for the - * transport being used (eg. virtio_ring), the rest are per-device feature bits. */ -#define VIRTIO_TRANSPORT_F_START 28 -#define VIRTIO_TRANSPORT_F_END 32 - -/* We notify when the ring is completely used, even if the guest is suppressing - * callbacks */ -#define VIRTIO_F_NOTIFY_ON_EMPTY 24 -/* Can the device handle any descriptor layout? */ -#define VIRTIO_F_ANY_LAYOUT 27 -/* We support indirect buffer descriptors */ -#define VIRTIO_RING_F_INDIRECT_DESC 28 -/* The Guest publishes the used index for which it expects an interrupt - * at the end of the avail ring. Host should ignore the avail->flags field. */ -/* The Host publishes the avail index for which it expects a kick - * at the end of the used ring. Guest should ignore the used->flags field. */ -#define VIRTIO_RING_F_EVENT_IDX 29 /* A guest should never accept this. It implies negotiation is broken. */ #define VIRTIO_F_BAD_FEATURE 30 -/* from Linux's linux/virtio_ring.h */ - -/* This marks a buffer as continuing via the next field. */ -#define VRING_DESC_F_NEXT 1 -/* This marks a buffer as write-only (otherwise read-only). */ -#define VRING_DESC_F_WRITE 2 -/* This means the buffer contains a list of buffer descriptors. */ -#define VRING_DESC_F_INDIRECT 4 - -/* This means don't notify other side when buffer added. */ -#define VRING_USED_F_NO_NOTIFY 1 -/* This means don't interrupt guest when buffer consumed. */ -#define VRING_AVAIL_F_NO_INTERRUPT 1 - struct VirtQueue; static inline hwaddr vring_align(hwaddr addr, @@ -263,6 +219,29 @@ void virtio_queue_set_host_notifier_fd_handler(VirtQueue *vq, bool assign, void virtio_queue_notify_vq(VirtQueue *vq); void virtio_irq(VirtQueue *vq); +static inline void virtio_add_feature(uint32_t *features, unsigned int fbit) +{ + assert(fbit < 32); + *features |= (1 << fbit); +} + +static inline void virtio_clear_feature(uint32_t *features, unsigned int fbit) +{ + assert(fbit < 32); + *features &= ~(1 << fbit); +} + +static inline bool __virtio_has_feature(uint32_t features, unsigned int fbit) +{ + assert(fbit < 32); + return !!(features & (1 << fbit)); +} + +static inline bool virtio_has_feature(VirtIODevice *vdev, unsigned int fbit) +{ + return __virtio_has_feature(vdev->guest_features, fbit); +} + static inline bool virtio_is_big_endian(VirtIODevice *vdev) { assert(vdev->device_endian != VIRTIO_DEVICE_ENDIAN_UNKNOWN); diff --git a/include/hw/virtio/virtio_ring.h b/include/hw/virtio/virtio_ring.h deleted file mode 100644 index 0b42e6eae5..0000000000 --- a/include/hw/virtio/virtio_ring.h +++ /dev/null @@ -1,167 +0,0 @@ -#ifndef _LINUX_VIRTIO_RING_H -#define _LINUX_VIRTIO_RING_H -/* - * This file is copied from /usr/include/linux while converting __uNN types - * to uXX_t, __inline__ to inline, and tab to spaces. - * */ - -/* An interface for efficient virtio implementation, currently for use by KVM - * and lguest, but hopefully others soon. Do NOT change this since it will - * break existing servers and clients. - * - * This header is BSD licensed so anyone can use the definitions to implement - * compatible drivers/servers. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of IBM nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * Copyright Rusty Russell IBM Corporation 2007. */ - -/* This marks a buffer as continuing via the next field. */ -#define VRING_DESC_F_NEXT 1 -/* This marks a buffer as write-only (otherwise read-only). */ -#define VRING_DESC_F_WRITE 2 -/* This means the buffer contains a list of buffer descriptors. */ -#define VRING_DESC_F_INDIRECT 4 - -/* The Host uses this in used->flags to advise the Guest: don't kick me when - * you add a buffer. It's unreliable, so it's simply an optimization. Guest - * will still kick if it's out of buffers. */ -#define VRING_USED_F_NO_NOTIFY 1 -/* The Guest uses this in avail->flags to advise the Host: don't interrupt me - * when you consume a buffer. It's unreliable, so it's simply an - * optimization. */ -#define VRING_AVAIL_F_NO_INTERRUPT 1 - -/* We support indirect buffer descriptors */ -#define VIRTIO_RING_F_INDIRECT_DESC 28 - -/* The Guest publishes the used index for which it expects an interrupt - * at the end of the avail ring. Host should ignore the avail->flags field. */ -/* The Host publishes the avail index for which it expects a kick - * at the end of the used ring. Guest should ignore the used->flags field. */ -#define VIRTIO_RING_F_EVENT_IDX 29 - -/* Virtio ring descriptors: 16 bytes. These can chain together via "next". */ -struct vring_desc { - /* Address (guest-physical). */ - uint64_t addr; - /* Length. */ - uint32_t len; - /* The flags as indicated above. */ - uint16_t flags; - /* We chain unused descriptors via this, too */ - uint16_t next; -}; - -struct vring_avail { - uint16_t flags; - uint16_t idx; - uint16_t ring[]; -}; - -/* u32 is used here for ids for padding reasons. */ -struct vring_used_elem { - /* Index of start of used descriptor chain. */ - uint32_t id; - /* Total length of the descriptor chain which was used (written to) */ - uint32_t len; -}; - -struct vring_used { - uint16_t flags; - uint16_t idx; - struct vring_used_elem ring[]; -}; - -struct vring { - unsigned int num; - - struct vring_desc *desc; - - struct vring_avail *avail; - - struct vring_used *used; -}; - -/* The standard layout for the ring is a continuous chunk of memory which looks - * like this. We assume num is a power of 2. - * - * struct vring - * { - * // The actual descriptors (16 bytes each) - * struct vring_desc desc[num]; - * - * // A ring of available descriptor heads with free-running index. - * uint16_t avail_flags; - * uint16_t avail_idx; - * uint16_t available[num]; - * uint16_t used_event_idx; - * - * // Padding to the next align boundary. - * char pad[]; - * - * // A ring of used descriptor heads with free-running index. - * uint16_t used_flags; - * uint16_t used_idx; - * struct vring_used_elem used[num]; - * uint16_t avail_event_idx; - * }; - */ -/* We publish the used event index at the end of the available ring, and vice - * versa. They are at the end for backwards compatibility. */ -#define vring_used_event(vr) ((vr)->avail->ring[(vr)->num]) -#define vring_avail_event(vr) (*(uint16_t *)&(vr)->used->ring[(vr)->num]) - -static inline void vring_init(struct vring *vr, unsigned int num, void *p, - unsigned long align) -{ - vr->num = num; - vr->desc = p; - vr->avail = p + num*sizeof(struct vring_desc); - vr->used = (void *)(((uintptr_t)&vr->avail->ring[num] + sizeof(uint16_t) - + align - 1) & ~(align - 1)); -} - -static inline unsigned vring_size(unsigned int num, unsigned long align) -{ - return ((sizeof(struct vring_desc) * num + sizeof(uint16_t) * (3 + num) - + align - 1) & ~(align - 1)) - + sizeof(uint16_t) * 3 + sizeof(struct vring_used_elem) * num; -} - -/* The following is used with USED_EVENT_IDX and AVAIL_EVENT_IDX */ -/* Assuming a given event_idx value from the other size, if - * we have just incremented index from old to new_idx, - * should we trigger an event? */ -static inline int vring_need_event(uint16_t event_idx, uint16_t new_idx, uint16_t old) -{ - /* Note: Xen has similar logic for notification hold-off - * in include/xen/interface/io/ring.h with req_event and req_prod - * corresponding to event_idx + 1 and new_idx respectively. - * Note also that req_event and req_prod in Xen start at 1, - * event indexes in virtio start at 0. */ - return (uint16_t)(new_idx - event_idx - 1) < (uint16_t)(new_idx - old); -} - -#endif /* _LINUX_VIRTIO_RING_H */ |