Add and use bootprio_find_mmio_device() to figure the boot priority of virtio-mmio block devices.
Add init_virtio_blk_mmio to initialize one virtio-mmio block device.
Signed-off-by: Gerd Hoffmann kraxel@redhat.com --- src/hw/virtio-blk.h | 1 + src/util.h | 1 + src/boot.c | 9 ++++++ src/hw/virtio-blk.c | 71 ++++++++++++++++++++++++++++++++++++++++++++ src/hw/virtio-mmio.c | 3 +- 5 files changed, 84 insertions(+), 1 deletion(-)
diff --git a/src/hw/virtio-blk.h b/src/hw/virtio-blk.h index 157bed62744a..d20461a2a3b2 100644 --- a/src/hw/virtio-blk.h +++ b/src/hw/virtio-blk.h @@ -39,5 +39,6 @@ struct virtio_blk_outhdr { struct disk_op_s; int virtio_blk_process_op(struct disk_op_s *op); void virtio_blk_setup(void); +void init_virtio_blk_mmio(void *mmio);
#endif /* _VIRTIO_BLK_H */ diff --git a/src/util.h b/src/util.h index 1c82e09ed87b..4f27fc307439 100644 --- a/src/util.h +++ b/src/util.h @@ -30,6 +30,7 @@ void bcv_prepboot(void); u8 is_bootprio_strict(void); struct pci_device; int bootprio_find_pci_device(struct pci_device *pci); +int bootprio_find_mmio_device(void *mmio); int bootprio_find_scsi_device(struct pci_device *pci, int target, int lun); int bootprio_find_scsi_mmio_device(void *mmio, int target, int lun); int bootprio_find_ata_device(struct pci_device *pci, int chanid, int slave); diff --git a/src/boot.c b/src/boot.c index f2f084bea843..cc87b1d98476 100644 --- a/src/boot.c +++ b/src/boot.c @@ -316,6 +316,15 @@ int bootprio_find_pci_device(struct pci_device *pci) return find_prio(desc); }
+int bootprio_find_mmio_device(void *mmio) +{ + if (!CONFIG_BOOTORDER) + return -1; + char desc[256]; + snprintf(desc, sizeof(desc), "/virtio-mmio@%016x/*", (u32)mmio); + return find_prio(desc); +} + int bootprio_find_scsi_device(struct pci_device *pci, int target, int lun) { if (!CONFIG_BOOTORDER) diff --git a/src/hw/virtio-blk.c b/src/hw/virtio-blk.c index a5e28fc858b1..3b198965c8ba 100644 --- a/src/hw/virtio-blk.c +++ b/src/hw/virtio-blk.c @@ -20,6 +20,7 @@ #include "string.h" // memset #include "util.h" // usleep, bootprio_find_pci_device, is_bootprio_strict #include "virtio-pci.h" +#include "virtio-mmio.h" #include "virtio-ring.h" #include "virtio-blk.h"
@@ -193,6 +194,76 @@ fail: free(vdrive); }
+void +init_virtio_blk_mmio(void *mmio) +{ + u8 status = VIRTIO_CONFIG_S_ACKNOWLEDGE | VIRTIO_CONFIG_S_DRIVER; + dprintf(1, "found virtio-blk-mmio at %p\n", mmio); + struct virtiodrive_s *vdrive = malloc_low(sizeof(*vdrive)); + if (!vdrive) { + warn_noalloc(); + return; + } + memset(vdrive, 0, sizeof(*vdrive)); + vdrive->drive.type = DTYPE_VIRTIO_BLK; + vdrive->drive.cntl_id = (u32)mmio; + + vp_init_mmio(&vdrive->vp, mmio); + if (vp_find_vq(&vdrive->vp, 0, &vdrive->vq) < 0 ) { + dprintf(1, "fail to find vq for virtio-blk-mmio %p\n", mmio); + goto fail; + } + + struct vp_device *vp = &vdrive->vp; + u64 features = vp_get_features(vp); + u64 version1 = 1ull << VIRTIO_F_VERSION_1; + u64 blk_size = 1ull << VIRTIO_BLK_F_BLK_SIZE; + + features = features & (version1 | blk_size); + vp_set_features(vp, features); + status |= VIRTIO_CONFIG_S_FEATURES_OK; + vp_set_status(vp, status); + if (!(vp_get_status(vp) & VIRTIO_CONFIG_S_FEATURES_OK)) { + dprintf(1, "device didn't accept features: %p\n", mmio); + goto fail; + } + + vdrive->drive.sectors = + vp_read(&vp->device, struct virtio_blk_config, capacity); + if (features & blk_size) { + vdrive->drive.blksize = + vp_read(&vp->device, struct virtio_blk_config, blk_size); + } else { + vdrive->drive.blksize = DISK_SECTOR_SIZE; + } + if (vdrive->drive.blksize != DISK_SECTOR_SIZE) { + dprintf(1, "virtio-blk-mmio %p block size %d is unsupported\n", + mmio, vdrive->drive.blksize); + goto fail; + } + dprintf(1, "virtio-blk-mmio %p blksize=%d sectors=%u\n", + mmio, vdrive->drive.blksize, (u32)vdrive->drive.sectors); + + vdrive->drive.pchs.cylinder = + vp_read(&vp->device, struct virtio_blk_config, cylinders); + vdrive->drive.pchs.head = + vp_read(&vp->device, struct virtio_blk_config, heads); + vdrive->drive.pchs.sector = + vp_read(&vp->device, struct virtio_blk_config, sectors); + + char *desc = znprintf(MAXDESCSIZE, "Virtio disk mmio:%p", mmio); + boot_add_hd(&vdrive->drive, desc, bootprio_find_mmio_device(mmio)); + + status |= VIRTIO_CONFIG_S_DRIVER_OK; + vp_set_status(&vdrive->vp, status); + return; + +fail: + vp_reset(&vdrive->vp); + free(vdrive->vq); + free(vdrive); +} + void virtio_blk_setup(void) { diff --git a/src/hw/virtio-mmio.c b/src/hw/virtio-mmio.c index a72f5fc5e6a1..b205ec6ef6ae 100644 --- a/src/hw/virtio-mmio.c +++ b/src/hw/virtio-mmio.c @@ -4,6 +4,7 @@ #include "stacks.h" // run_thread #include "string.h" // memset #include "virtio-pci.h" +#include "virtio-blk.h" #include "virtio-scsi.h" #include "virtio-ring.h" #include "virtio-mmio.h" @@ -55,7 +56,7 @@ void virtio_mmio_setup(void) devs[i], devid, version == 1 ? " (legacy)" : ""); switch (devid) { case 2: /* blk */ - /* TODO */ + run_thread(init_virtio_blk_mmio, mmio); break; case 8: /* scsi */ run_thread(init_virtio_scsi_mmio, mmio);