The aim of the series is to implement carveout memory management as discussed during OpenAMP weekly call and defined in proposed document [1] This first series focus only on adding support of the different types of carveout memories (dynamic, fixed, platform driver depend...). 64bit resource table will be addressed in a next series. [1]: http://openamp.github.io/docs/mca/coprocessor-memory-definition-v6.pdf --- Changes sine V2: Reshuffle the series to: - Take into account Bjorn's comments. - Add patch to check consistency between carveout resource request and IOMMU support. - Introduce platform specific prepare and unprepare ops to enable HW like clock, bus, regulator, memory region... before loading co-processor firmware. - Rely on memory carveout management for all remoteproc memory allocations. - Lookup pre-registered carveout by name first. - Create a subdevice for each vdev declared in firmware resource table that will be used by virtio based driver to retrieve specific memory pool. This series takes some assumptions for carveout names associated to vdev: - For vring: "vdev%xvring%x" with vdev index from resource table and vring index in vdev. - For vdev buffer: "vdev%xbuffer" with vdev index from resource table This will be changed in the future, adding names field in vdev resource in next resource table version. Changes since V1: - Minor corrections on first 7 patches (error management) - Add "memory device" support on the top of first 7 patches. Goal is to answer use case reported during OpenAMP weekly discussion: - "Be able to specify memory region for vring and buffer allocation, even if no specific request defined in firmware resource table." Patches offer the capability to create a "memory device" associated to a carveout with a dedicated DMA memory pool. Different resource handlers are modified to look-up for specific carveout by name. If match found and associated "memory device" present, device is used instead of rproc platform device for allocation. Loic Pallardy (13): remoteproc: configure IOMMU only if device address requested remoteproc: add rproc_va_to_pa function remoteproc: add release ops in rproc_mem_entry struct remoteproc: add name in rproc_mem_entry struct remoteproc: add helper function to allocate and init rproc_mem_entry struct remoteproc: introduce rproc_add_carveout function remoteproc: introduce rproc_find_carveout_by_name function remoteproc: add prepare and unprepare ops remoteproc: modify rproc_handle_carveout to support pre-registered region remoteproc: modify vring allocation to support pre-registered region remoteproc: create vdev subdevice with specific dma memory pool rpmsg: virtio: allocate buffer from parent remoteproc: st: add reserved memory support drivers/remoteproc/remoteproc_core.c | 332 ++++++++++++++++++++++++++++---- drivers/remoteproc/remoteproc_debugfs.c | 1 + drivers/remoteproc/remoteproc_virtio.c | 2 +- drivers/remoteproc/st_remoteproc.c | 68 ++++++- drivers/rpmsg/virtio_rpmsg_bus.c | 2 +- include/linux/remoteproc.h | 22 ++- 6 files changed, 379 insertions(+), 48 deletions(-) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-remoteproc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
