On 11/3/21 14:57, Vijay Srivastava wrote:
From: Vijay Kumar Srivastava <vsriv...@xilinx.com>
Implement vDPA ops dev_conf and dev_close for DMA mapping,
interrupt and virtqueue configurations.
Signed-off-by: Vijay Kumar Srivastava <vsriv...@xilinx.com>
Acked-by: Andrew Rybchenko <andrew.rybche...@oktetlabs.ru>
---
v2:
* Removed redundant null check while calling free().
* Added error handling for rte_vhost_get_vhost_vring().
v4:
* Removed rc for rte_vfio_container_dma_unmap from label failed_vfio_dma_map.
* Updated VFIO_DEVICE_SET_IRQS parameter fields for intr disable.
* Removed goto label fail_vring_map.
drivers/vdpa/sfc/sfc_vdpa.c | 6 +
drivers/vdpa/sfc/sfc_vdpa.h | 43 ++++
drivers/vdpa/sfc/sfc_vdpa_hw.c | 69 ++++++
drivers/vdpa/sfc/sfc_vdpa_ops.c | 525 ++++++++++++++++++++++++++++++++++++++--
drivers/vdpa/sfc/sfc_vdpa_ops.h | 28 +++
5 files changed, 651 insertions(+), 20 deletions(-)
...
+static uint64_t
+hva_to_gpa(int vid, uint64_t hva)
+{
+ struct rte_vhost_memory *vhost_mem = NULL;
+ struct rte_vhost_mem_region *mem_reg = NULL;
+ uint32_t i;
+ uint64_t gpa = 0;
+
+ if (rte_vhost_get_mem_table(vid, &vhost_mem) < 0)
+ goto error;
+
+ for (i = 0; i < vhost_mem->nregions; i++) {
+ mem_reg = &vhost_mem->regions[i];
+
+ if (hva >= mem_reg->host_user_addr &&
+ hva < mem_reg->host_user_addr + mem_reg->size) {
+ gpa = (hva - mem_reg->host_user_addr) +
+ mem_reg->guest_phys_addr;
+ break;
+ }
+ }
+
+error:
+ free(vhost_mem);
+ return gpa;
+}
It would be done later, but all the vDPA drivers have (almost) the same
function, so it would make sense to add a Vhost API that would make use
of Vhost's hva_to_gpa.
Reviewed-by: Maxime Coquelin <maxime.coque...@redhat.com>
Thanks,
Maxime
