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nvme-print-json: Add register print functions
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To prepare the state for the get register feature.

Signed-off-by: Tokunori Ikegami <[email protected]>
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@ikegami-t
ikegami-t committed Mar 23, 2024
1 parent fb36c8e commit 34d315e
Showing 1 changed file with 144 additions and 0 deletions.
144 changes: 144 additions & 0 deletions nvme-print-json.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2720,6 +2720,149 @@ static void json_ctrl_registers(void *bar, bool fabrics)
json_print(r);
}

static void json_registers_cmbebs(__u32 cmbebs, struct json_object *r)
{
char buffer[BUF_LEN];

obj_add_uint_nx(r, "cmbebs", cmbebs);

obj_add_uint_nx(r, "CMB Elasticity Buffer Size Base (CMBWBZ)", cmbebs >> 8);
sprintf(buffer, "%s", cmbebs & 0x10 ? "shall" : "may");
obj_add_str(r, "Read Bypass Behavior", buffer);
obj_add_str(r, "CMB Elasticity Buffer Size Units (CMBSZU)",
nvme_register_unit_to_string(cmbebs & 0xf));
}

static void json_registers_cmbswtp(__u32 cmbswtp, struct json_object *r)
{
char str[STR_LEN];

obj_add_uint_nx(r, "cmbswtp", cmbswtp);

obj_add_uint_nx(r, "CMB Sustained Write Throughput (CMBSWTV)", cmbswtp >> 8);
sprintf(str, "%s", nvme_register_unit_to_string(cmbswtp & 0xf));
obj_add_str(r, "CMB Sustained Write Throughput Units (CMBSWTU)", str);
}

static void json_ctrl_register_human(int offset, uint64_t value, struct json_object *r)
{
char buffer[BUF_LEN];
struct json_object *array_obj = NULL;

switch (offset) {
case NVME_REG_CAP:
array_obj = obj_create_array_obj(r, "cap");
break;
case NVME_REG_VS:
array_obj = obj_create_array_obj(r, "vs");
break;
case NVME_REG_INTMS:
obj_add_nprix64(r, "Interrupt Vector Mask Set (IVMS)", value);
break;
case NVME_REG_INTMC:
obj_add_nprix64(r, "Interrupt Vector Mask Clear (IVMC)", value);
break;
case NVME_REG_CC:
array_obj = obj_create_array_obj(r, "cc");
break;
case NVME_REG_CSTS:
array_obj = obj_create_array_obj(r, "csts");
break;
case NVME_REG_NSSR:
obj_add_uint64(r, "NVM Subsystem Reset Control (NSSRC)", value);
break;
case NVME_REG_AQA:
json_registers_aqa(value, obj_create_array_obj(r, "aqa"));
break;
case NVME_REG_ASQ:
obj_add_nprix64(r, "Admin Submission Queue Base (ASQB)", value);
break;
case NVME_REG_ACQ:
obj_add_nprix64(r, "Admin Completion Queue Base (ACQB)", value);
break;
case NVME_REG_CMBLOC:
json_registers_cmbloc(value, true, obj_create_array_obj(r, "cmbloc"));
break;
case NVME_REG_CMBSZ:
json_registers_cmbsz(value, obj_create_array_obj(r, "cmbsz"));
break;
case NVME_REG_BPINFO:
json_registers_bpinfo(value, obj_create_array_obj(r, "bpinfo"));
break;
case NVME_REG_BPRSEL:
json_registers_bprsel(value, obj_create_array_obj(r, "bprsel"));
break;
case NVME_REG_BPMBL:
json_registers_bpmbl(value, obj_create_array_obj(r, "bpmbl"));
break;
case NVME_REG_CMBMSC:
json_registers_cmbmsc(value, obj_create_array_obj(r, "cmbmsc"));
break;
case NVME_REG_CMBSTS:
json_registers_cmbsts(value, obj_create_array_obj(r, "cmbsts"));
break;
case NVME_REG_CMBEBS:
json_registers_cmbebs(value, obj_create_array_obj(r, "cmbebs"));
break;
case NVME_REG_CMBSWTP:
json_registers_cmbswtp(value, obj_create_array_obj(r, "cmbswtp"));
break;
case NVME_REG_NSSD:
json_registers_nssd(value, obj_create_array_obj(r, "nssd"));
break;
case NVME_REG_CRTO:
array_obj = obj_create_array_obj(r, "crto");
break;
case NVME_REG_PMRCAP:
json_registers_pmrcap(value, obj_create_array_obj(r, "pmrcap"));
break;
case NVME_REG_PMRCTL:
json_registers_pmrctl(value, obj_create_array_obj(r, "pmrctl"));
break;
case NVME_REG_PMRSTS:
json_registers_pmrsts(value, true, obj_create_array_obj(r, "pmrsts"));
break;
case NVME_REG_PMREBS:
json_registers_pmrebs(value, obj_create_array_obj(r, "pmrebs"));
break;
case NVME_REG_PMRSWTP:
json_registers_pmrswtp(value, obj_create_array_obj(r, "pmrswtp"));
break;
case NVME_REG_PMRMSCL:
json_registers_pmrmscl(value, obj_create_array_obj(r, "pmrmscl"));
break;
case NVME_REG_PMRMSCU:
json_registers_pmrmscu(value, obj_create_array_obj(r, "pmrmscu"));
break;
default:
sprintf(buffer, "%#04x (%s)", offset, nvme_register_to_string(offset));
obj_add_str(r, "register", buffer);
obj_add_nprix64(r, "value", value);
break;
}

if (array_obj)
json_single_property_human(offset, value, array_obj);
}

static void json_ctrl_register(int offset, uint64_t value)
{
bool human = json_print_ops.flags & VERBOSE;
struct json_object *r;
char json_str[STR_LEN];

sprintf(json_str, "register: %#04x", offset);
r = obj_create(json_str);

if (human) {
obj_add_uint64(r, nvme_register_to_string(offset), value);
json_ctrl_register_human(offset, value, r);
} else {
obj_add_str(r, "name", nvme_register_symbol_to_string(offset));
obj_add_uint64(r, "value", value);
}
}

static void json_nvme_cmd_set_independent_id_ns(struct nvme_id_independent_id_ns *ns,
unsigned int nsid)
{
Expand Down Expand Up @@ -4461,6 +4604,7 @@ static struct print_ops json_print_ops = {
.phy_rx_eom_log = json_phy_rx_eom_log,
.ctrl_list = json_nvme_list_ctrl,
.ctrl_registers = json_ctrl_registers,
.ctrl_register = json_ctrl_register,
.directive = json_directive_show,
.discovery_log = json_discovery_log,
.effects_log_list = json_effects_log_list,
Expand Down

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