Add a new virtio-mmio.c source file, providing a function to register virtio-mmio devices.
Signed-off-by: Gerd Hoffmann <[email protected]> --- Makefile | 2 +- src/hw/virtio-mmio.h | 6 ++++++ src/hw/virtio-mmio.c | 30 ++++++++++++++++++++++++++++++ 3 files changed, 37 insertions(+), 1 deletion(-) create mode 100644 src/hw/virtio-mmio.h create mode 100644 src/hw/virtio-mmio.c diff --git a/Makefile b/Makefile index 5f7d5370198a..985ef591a13b 100644 --- a/Makefile +++ b/Makefile @@ -43,7 +43,7 @@ SRC32FLAT=$(SRCBOTH) post.c e820map.c malloc.c romfile.c x86.c optionroms.c \ fw/coreboot.c fw/lzmadecode.c fw/multiboot.c fw/csm.c fw/biostables.c \ fw/paravirt.c fw/shadow.c fw/pciinit.c fw/smm.c fw/smp.c fw/mtrr.c fw/xen.c \ fw/acpi.c fw/mptable.c fw/pirtable.c fw/smbios.c fw/romfile_loader.c \ - hw/virtio-ring.c hw/virtio-pci.c hw/virtio-blk.c hw/virtio-scsi.c \ + hw/virtio-ring.c hw/virtio-pci.c hw/virtio-mmio.c hw/virtio-blk.c hw/virtio-scsi.c \ hw/tpm_drivers.c hw/nvme.c SRC32SEG=string.c output.c pcibios.c apm.c stacks.c hw/pci.c hw/serialio.c DIRS=src src/hw src/fw vgasrc diff --git a/src/hw/virtio-mmio.h b/src/hw/virtio-mmio.h new file mode 100644 index 000000000000..751984241f49 --- /dev/null +++ b/src/hw/virtio-mmio.h @@ -0,0 +1,6 @@ +#ifndef _VIRTIO_MMIO_H +#define _VIRTIO_MMIO_H + +void virtio_mmio_register(u64 mmio); + +#endif /* _VIRTIO_MMIO_H */ diff --git a/src/hw/virtio-mmio.c b/src/hw/virtio-mmio.c new file mode 100644 index 000000000000..6c969d787ec7 --- /dev/null +++ b/src/hw/virtio-mmio.c @@ -0,0 +1,30 @@ +#include "config.h" // CONFIG_DEBUG_LEVEL +#include "malloc.h" // free +#include "output.h" // dprintf +#include "virtio-pci.h" +#include "virtio-ring.h" + +/* qemu microvm supports 8 virtio-mmio devices */ +static u64 devs[8]; + +void virtio_mmio_register(u64 mmio) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(devs); i++) { + if (devs[i] == mmio) { + /* + * This can happen in case we have multiple scsi devices + * attached to a single virtio-scsi controller + */ + dprintf(3, "virtio-mmio: duplicate device at 0x%llx, ignoring\n", mmio); + return; + } + if (devs[i] == 0) { + dprintf(3, "virtio-mmio: register device at 0x%llx\n", mmio); + devs[i] = mmio; + return; + } + } + dprintf(1, "virtio-mmio: device list full\n"); +} -- 2.18.2 _______________________________________________ SeaBIOS mailing list -- [email protected] To unsubscribe send an email to [email protected]
