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hw/nvme: be compliant wrt. dsm processing limits

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The specification states that,

> The controller shall set all three processing limit fields (i.e., the
> DMRL, DMRSL and DMSL fields) to non-zero values or shall clear all
> three processing limit fields to 0h.

So, set the DMRL and DMSL fields in addition to DMRSL.

Reviewed-by: Jesper Wendel Devantier <foss@defmacro.it>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
This commit is contained in:
Klaus Jensen 2024-12-16 13:53:06 +01:00
parent b202fb549d
commit d96a32de3f
2 changed files with 17 additions and 9 deletions
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24
hw/nvme/ctrl.c
View File

@ -5639,7 +5639,9 @@ static uint16_t nvme_identify_ctrl_csi(NvmeCtrl *n, NvmeRequest *req)
switch (c->csi) {
case NVME_CSI_NVM:
id_nvm->vsl = n->params.vsl;
id_nvm->dmrl = NVME_ID_CTRL_NVM_DMRL_MAX;
id_nvm->dmrsl = cpu_to_le32(n->dmrsl);
id_nvm->dmsl = NVME_ID_CTRL_NVM_DMRL_MAX * n->dmrsl;
break;
case NVME_CSI_ZONED:
@ -6696,18 +6698,23 @@ static uint16_t nvme_aer(NvmeCtrl *n, NvmeRequest *req)
return NVME_NO_COMPLETE;
}
static void nvme_update_dmrsl(NvmeCtrl *n)
static void nvme_update_dsm_limits(NvmeCtrl *n, NvmeNamespace *ns)
{
int nsid;
if (ns) {
n->dmrsl =
MIN_NON_ZERO(n->dmrsl, BDRV_REQUEST_MAX_BYTES / nvme_l2b(ns, 1));
for (nsid = 1; nsid <= NVME_MAX_NAMESPACES; nsid++) {
NvmeNamespace *ns = nvme_ns(n, nsid);
return;
}
for (uint32_t nsid = 1; nsid <= NVME_MAX_NAMESPACES; nsid++) {
ns = nvme_ns(n, nsid);
if (!ns) {
continue;
}
n->dmrsl = MIN_NON_ZERO(n->dmrsl,
BDRV_REQUEST_MAX_BYTES / nvme_l2b(ns, 1));
n->dmrsl =
MIN_NON_ZERO(n->dmrsl, BDRV_REQUEST_MAX_BYTES / nvme_l2b(ns, 1));
}
}
@ -6795,7 +6802,7 @@ static uint16_t nvme_ns_attachment(NvmeCtrl *n, NvmeRequest *req)
ctrl->namespaces[nsid] = NULL;
ns->attached--;
nvme_update_dmrsl(ctrl);
nvme_update_dsm_limits(ctrl, NULL);
break;
@ -8902,8 +8909,7 @@ void nvme_attach_ns(NvmeCtrl *n, NvmeNamespace *ns)
n->namespaces[nsid] = ns;
ns->attached++;
n->dmrsl = MIN_NON_ZERO(n->dmrsl,
BDRV_REQUEST_MAX_BYTES / nvme_l2b(ns, 1));
nvme_update_dsm_limits(n, ns);
}
static void nvme_realize(PCIDevice *pci_dev, Error **errp)

2
include/block/nvme.h
View File

@ -1207,6 +1207,8 @@ typedef struct NvmeIdCtrlZoned {
uint8_t rsvd1[4095];
} NvmeIdCtrlZoned;
#define NVME_ID_CTRL_NVM_DMRL_MAX 255
typedef struct NvmeIdCtrlNvm {
uint8_t vsl;
uint8_t wzsl;