motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-04 08:13:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

hw/misc/ivshmem-flat: Add ivshmem-flat device

Browse source 
Add a new device, ivshmem-flat, which is similar to the ivshmem PCI but
does not require a PCI bus. It's meant to be used on machines like those
with Cortex-M MCUs, which usually lack a PCI/PCIe bus, e.g. lm3s6965evb
and mps2-an385.

The device currently only supports the sysbus bus.

The new device, just like the ivshmem PCI device, supports both peer
notification via hardware interrupts and shared memory.

The device shared memory size can be set using the 'shmem-size' option
and it defaults to 4 MiB, which is the default size of shmem allocated
by the ivshmem server.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1134
Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
[PMD: Rebased updating Property and using DEFINE_TYPES macro]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20241216141818.111255-2-gustavo.romero@linaro.org>
This commit is contained in:
Gustavo Romero 2023-11-27 05:20:20 +00:00 • committed by Philippe Mathieu-Daudé
parent ff871d0462
commit e6c33efed3
7 changed files with 601 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

16
hw/misc/trace-events
View file

@ -368,3 +368,19 @@ aspeed_sli_read(uint64_t offset, unsigned int size, uint32_t data) "To 0x%" PRIx
aspeed_sliio_write(uint64_t offset, unsigned int size, uint32_t data) "To 0x%" PRIx64 " of size %u: 0x%" PRIx32
aspeed_sliio_read(uint64_t offset, unsigned int size, uint32_t data) "To 0x%" PRIx64 " of size %u: 0x%" PRIx32
# ivshmem-flat.c
ivshmem_flat_irq_handler(uint16_t vector_id) "Caught interrupt request: vector %d"
ivshmem_flat_new_peer(uint16_t peer_id) "New peer ID: %d"
ivshmem_flat_add_vector_failure(uint16_t vector_id, uint32_t vector_fd, uint16_t peer_id) "Failed to add vector %u (fd = %u) to peer ID %u, maximum number of vectors reached"
ivshmem_flat_add_vector_success(uint16_t vector_id, uint32_t vector_fd, uint16_t peer_id) "Successful addition of vector %u (fd = %u) to peer ID %u"
ivshmem_flat_irq_resolved(const char *irq_qompath) "IRQ QOM path '%s' correctly resolved"
ivshmem_flat_proto_ver_own_id(uint64_t proto_ver, uint16_t peer_id) "Protocol Version = 0x%"PRIx64", Own Peer ID = %u"
ivshmem_flat_shmem_size(int fd, uint64_t size) "Shmem fd (%d) total size is %"PRIu64" byte(s)"
ivshmem_flat_shmem_map(uint64_t addr) "Mapping shmem @ 0x%"PRIx64
ivshmem_flat_mmio_map(uint64_t addr) "Mapping MMRs @ 0x%"PRIx64
ivshmem_flat_read_mmr(uint64_t addr_offset) "Read access at offset %"PRIu64
ivshmem_flat_read_mmr_doorbell(void) "DOORBELL register is write-only!"
ivshmem_flat_read_write_mmr_invalid(uint64_t addr_offset) "No ivshmem register mapped at offset %"PRIu64
ivshmem_flat_interrupt_invalid_peer(uint16_t peer_id) "Can't interrupt non-existing peer %u"
ivshmem_flat_write_mmr(uint64_t addr_offset) "Write access at offset %"PRIu64
ivshmem_flat_interrupt_peer(uint16_t peer_id, uint16_t vector_id) "Interrupting peer ID %u, vector %u..."