diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/hw/nvme-int.h | 8 | ||||
| -rw-r--r-- | src/hw/nvme.c | 13 |
2 files changed, 18 insertions, 3 deletions
diff --git a/src/hw/nvme-int.h b/src/hw/nvme-int.h index 9f95dd80..674008a5 100644 --- a/src/hw/nvme-int.h +++ b/src/hw/nvme-int.h @@ -117,6 +117,7 @@ struct nvme_namespace { u32 block_size; u32 metadata_size; + u32 max_req_size; /* Page aligned buffer of size NVME_PAGE_SIZE. */ char *dma_buffer; @@ -131,7 +132,12 @@ struct nvme_identify_ctrl { char mn[40]; char fr[8]; - char _boring[516 - 72]; + u8 rab; + u8 ieee[3]; + u8 cmic; + u8 mdts; + + char _boring[516 - 78]; u32 nn; /* number of namespaces */ }; diff --git a/src/hw/nvme.c b/src/hw/nvme.c index 6a012047..5bc25862 100644 --- a/src/hw/nvme.c +++ b/src/hw/nvme.c @@ -238,7 +238,8 @@ nvme_admin_identify_ns(struct nvme_ctrl *ctrl, u32 ns_id) } static void -nvme_probe_ns(struct nvme_ctrl *ctrl, struct nvme_namespace *ns, u32 ns_id) +nvme_probe_ns(struct nvme_ctrl *ctrl, struct nvme_namespace *ns, u32 ns_id, + u8 mdts) { ns->ctrl = ctrl; ns->ns_id = ns_id; @@ -281,6 +282,14 @@ nvme_probe_ns(struct nvme_ctrl *ctrl, struct nvme_namespace *ns, u32 ns_id) ns->drive.blksize = ns->block_size; ns->drive.sectors = ns->lba_count; + if (mdts) { + ns->max_req_size = ((1U << mdts) * NVME_PAGE_SIZE) / ns->block_size; + dprintf(3, "NVME NS %u max request size: %d sectors\n", + ns_id, ns->max_req_size); + } else { + ns->max_req_size = -1U; + } + ns->dma_buffer = zalloc_page_aligned(&ZoneHigh, NVME_PAGE_SIZE); char *desc = znprintf(MAXDESCSIZE, "NVMe NS %u: %llu MiB (%llu %u-byte " @@ -567,7 +576,7 @@ nvme_controller_enable(struct nvme_ctrl *ctrl) /* Populate namespace IDs */ int ns_idx; for (ns_idx = 0; ns_idx < ctrl->ns_count; ns_idx++) { - nvme_probe_ns(ctrl, &ctrl->ns[ns_idx], ns_idx + 1); + nvme_probe_ns(ctrl, &ctrl->ns[ns_idx], ns_idx + 1, identify->mdts); } dprintf(3, "NVMe initialization complete!\n"); |