| virtio.h (238072) | virtio.h (238360) |
|---|---|
| 1/*- 2 * This header is BSD licensed so anyone can use the definitions to implement 3 * compatible drivers/servers. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * | 1/*- 2 * This header is BSD licensed so anyone can use the definitions to implement 3 * compatible drivers/servers. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * |
| 28 * $FreeBSD: head/sys/dev/virtio/virtio.h 238072 2012-07-03 15:15:41Z obrien $ | 28 * $FreeBSD: head/sys/dev/virtio/virtio.h 238360 2012-07-11 02:57:19Z grehan $ |
| 29 */ 30 31#ifndef _VIRTIO_H_ 32#define _VIRTIO_H_ 33 34struct vq_alloc_info; 35 36/* VirtIO device IDs. */ --- 49 unchanged lines hidden (view full) --- 86 */ 87#define VIRTIO_MAX_INDIRECT ((int) (PAGE_SIZE / 16)) 88 89/* 90 * VirtIO instance variables indices. 91 */ 92#define VIRTIO_IVAR_DEVTYPE 1 93#define VIRTIO_IVAR_FEATURE_DESC 2 | 29 */ 30 31#ifndef _VIRTIO_H_ 32#define _VIRTIO_H_ 33 34struct vq_alloc_info; 35 36/* VirtIO device IDs. */ --- 49 unchanged lines hidden (view full) --- 86 */ 87#define VIRTIO_MAX_INDIRECT ((int) (PAGE_SIZE / 16)) 88 89/* 90 * VirtIO instance variables indices. 91 */ 92#define VIRTIO_IVAR_DEVTYPE 1 93#define VIRTIO_IVAR_FEATURE_DESC 2 |
| 94#define VIRTIO_IVAR_VENDOR 3 95#define VIRTIO_IVAR_DEVICE 4 96#define VIRTIO_IVAR_SUBVENDOR 5 97#define VIRTIO_IVAR_SUBDEVICE 6 |
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| 94 95struct virtio_feature_desc { 96 uint64_t vfd_val; 97 char *vfd_str; 98}; 99 100const char *virtio_device_name(uint16_t devid); | 98 99struct virtio_feature_desc { 100 uint64_t vfd_val; 101 char *vfd_str; 102}; 103 104const char *virtio_device_name(uint16_t devid); |
| 101int virtio_get_device_type(device_t dev); 102void virtio_set_feature_desc(device_t dev, 103 struct virtio_feature_desc *feature_desc); | |
| 104void virtio_describe(device_t dev, const char *msg, 105 uint64_t features, struct virtio_feature_desc *feature_desc); 106 107/* 108 * VirtIO Bus Methods. 109 */ | 105void virtio_describe(device_t dev, const char *msg, 106 uint64_t features, struct virtio_feature_desc *feature_desc); 107 108/* 109 * VirtIO Bus Methods. 110 */ |
| 111void virtio_read_ivar(device_t dev, int ivar, uintptr_t *val); 112void virtio_write_ivar(device_t dev, int ivar, uintptr_t val); |
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| 110uint64_t virtio_negotiate_features(device_t dev, uint64_t child_features); 111int virtio_alloc_virtqueues(device_t dev, int flags, int nvqs, 112 struct vq_alloc_info *info); 113int virtio_setup_intr(device_t dev, enum intr_type type); 114int virtio_with_feature(device_t dev, uint64_t feature); 115void virtio_stop(device_t dev); 116int virtio_reinit(device_t dev, uint64_t features); 117void virtio_reinit_complete(device_t dev); --- 25 unchanged lines hidden (view full) --- 143{ \ 144 virtio_write_device_config(dev, offset, &val, sizeof(type)); \ 145} 146 147VIRTIO_RDWR_DEVICE_CONFIG(1, uint8_t); 148VIRTIO_RDWR_DEVICE_CONFIG(2, uint16_t); 149VIRTIO_RDWR_DEVICE_CONFIG(4, uint32_t); 150 | 113uint64_t virtio_negotiate_features(device_t dev, uint64_t child_features); 114int virtio_alloc_virtqueues(device_t dev, int flags, int nvqs, 115 struct vq_alloc_info *info); 116int virtio_setup_intr(device_t dev, enum intr_type type); 117int virtio_with_feature(device_t dev, uint64_t feature); 118void virtio_stop(device_t dev); 119int virtio_reinit(device_t dev, uint64_t features); 120void virtio_reinit_complete(device_t dev); --- 25 unchanged lines hidden (view full) --- 146{ \ 147 virtio_write_device_config(dev, offset, &val, sizeof(type)); \ 148} 149 150VIRTIO_RDWR_DEVICE_CONFIG(1, uint8_t); 151VIRTIO_RDWR_DEVICE_CONFIG(2, uint16_t); 152VIRTIO_RDWR_DEVICE_CONFIG(4, uint32_t); 153 |
| 154#define VIRTIO_READ_IVAR(name, ivar) \ 155static inline int \ 156__CONCAT(virtio_get_,name)(device_t dev) \ 157{ \ 158 uintptr_t val; \ 159 virtio_read_ivar(dev, ivar, &val); \ 160 return ((int) val); \ 161} 162 163VIRTIO_READ_IVAR(device_type, VIRTIO_IVAR_DEVTYPE); 164VIRTIO_READ_IVAR(vendor, VIRTIO_IVAR_VENDOR); 165VIRTIO_READ_IVAR(device, VIRTIO_IVAR_DEVICE); 166VIRTIO_READ_IVAR(subvendor, VIRTIO_IVAR_SUBVENDOR); 167VIRTIO_READ_IVAR(subdevice, VIRTIO_IVAR_SUBDEVICE); 168 169#define VIRTIO_WRITE_IVAR(name, ivar) \ 170static inline void \ 171__CONCAT(virtio_set_,name)(device_t dev, void *val) \ 172{ \ 173 virtio_write_ivar(dev, ivar, (uintptr_t) val); \ 174} 175 176VIRTIO_WRITE_IVAR(feature_desc, VIRTIO_IVAR_FEATURE_DESC); 177 |
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| 151#endif /* _VIRTIO_H_ */ | 178#endif /* _VIRTIO_H_ */ |