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hw/nvme: add knob for doorbell buffer config support

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Add a 'dbcs' knob to allow Doorbell Buffer Config command to be
disabled.

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 13:53:04 +01:00
parent e7047adf1e
commit 9cf6ec0659
3 changed files with 10 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

11
hw/nvme/ctrl.c
View file

@ -278,7 +278,6 @@ static const uint32_t nvme_cse_acs_default[256] = {
[NVME_ADM_CMD_GET_FEATURES] = NVME_CMD_EFF_CSUPP,
[NVME_ADM_CMD_ASYNC_EV_REQ] = NVME_CMD_EFF_CSUPP,
[NVME_ADM_CMD_NS_ATTACHMENT] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_NIC,
[NVME_ADM_CMD_DBBUF_CONFIG] = NVME_CMD_EFF_CSUPP,
[NVME_ADM_CMD_FORMAT_NVM] = NVME_CMD_EFF_CSUPP | NVME_CMD_EFF_LBCC,
[NVME_ADM_CMD_DIRECTIVE_RECV] = NVME_CMD_EFF_CSUPP,
[NVME_ADM_CMD_DIRECTIVE_SEND] = NVME_CMD_EFF_CSUPP,
@ -8773,8 +8772,13 @@ static void nvme_init_ctrl(NvmeCtrl *n, PCIDevice *pci_dev)
id->mdts = n->params.mdts;
id->ver = cpu_to_le32(NVME_SPEC_VER);
oacs = NVME_OACS_NMS | NVME_OACS_FORMAT | NVME_OACS_DBBUF |
NVME_OACS_DIRECTIVES;
oacs = NVME_OACS_NMS | NVME_OACS_FORMAT | NVME_OACS_DIRECTIVES;
if (n->params.dbcs) {
oacs |= NVME_OACS_DBCS;
n->cse.acs[NVME_ADM_CMD_DBBUF_CONFIG] = NVME_CMD_EFF_CSUPP;
}
if (n->params.sriov_max_vfs) {
oacs |= NVME_OACS_VMS;
@ -9024,6 +9028,7 @@ static const Property nvme_props[] = {
DEFINE_PROP_BOOL("use-intel-id", NvmeCtrl, params.use_intel_id, false),
DEFINE_PROP_BOOL("legacy-cmb", NvmeCtrl, params.legacy_cmb, false),
DEFINE_PROP_BOOL("ioeventfd", NvmeCtrl, params.ioeventfd, false),
DEFINE_PROP_BOOL("dbcs", NvmeCtrl, params.dbcs, true),
DEFINE_PROP_UINT8("zoned.zasl", NvmeCtrl, params.zasl, 0),
DEFINE_PROP_BOOL("zoned.auto_transition", NvmeCtrl,
params.auto_transition_zones, true),

1
hw/nvme/nvme.h
View file

@ -539,6 +539,7 @@ typedef struct NvmeParams {
bool auto_transition_zones;
bool legacy_cmb;
bool ioeventfd;
bool dbcs;
uint16_t sriov_max_vfs;
uint16_t sriov_vq_flexible;
uint16_t sriov_vi_flexible;

2
include/block/nvme.h
View file

@ -1235,7 +1235,7 @@ enum NvmeIdCtrlOacs {
NVME_OACS_NMS = 1 << 3,
NVME_OACS_DIRECTIVES = 1 << 5,
NVME_OACS_VMS = 1 << 7,
NVME_OACS_DBBUF = 1 << 8,
NVME_OACS_DBCS = 1 << 8,
};
enum NvmeIdCtrlOncs {