778 lines
20 KiB
C
778 lines
20 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright(c) 2018 Intel Corporation. All rights reserved. */
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#include <linux/libnvdimm.h>
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#include <linux/ndctl.h>
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#include <linux/acpi.h>
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#include <asm/smp.h>
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#include "intel.h"
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#include "nfit.h"
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static ssize_t firmware_activate_noidle_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct nvdimm_bus *nvdimm_bus = to_nvdimm_bus(dev);
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struct nvdimm_bus_descriptor *nd_desc = to_nd_desc(nvdimm_bus);
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struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
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return sprintf(buf, "%s\n", acpi_desc->fwa_noidle ? "Y" : "N");
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}
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static ssize_t firmware_activate_noidle_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t size)
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{
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struct nvdimm_bus *nvdimm_bus = to_nvdimm_bus(dev);
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struct nvdimm_bus_descriptor *nd_desc = to_nd_desc(nvdimm_bus);
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struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
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ssize_t rc;
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bool val;
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rc = kstrtobool(buf, &val);
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if (rc)
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return rc;
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if (val != acpi_desc->fwa_noidle)
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acpi_desc->fwa_cap = NVDIMM_FWA_CAP_INVALID;
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acpi_desc->fwa_noidle = val;
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return size;
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}
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DEVICE_ATTR_RW(firmware_activate_noidle);
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bool intel_fwa_supported(struct nvdimm_bus *nvdimm_bus)
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{
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struct nvdimm_bus_descriptor *nd_desc = to_nd_desc(nvdimm_bus);
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struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
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unsigned long *mask;
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if (!test_bit(NVDIMM_BUS_FAMILY_INTEL, &nd_desc->bus_family_mask))
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return false;
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mask = &acpi_desc->family_dsm_mask[NVDIMM_BUS_FAMILY_INTEL];
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return *mask == NVDIMM_BUS_INTEL_FW_ACTIVATE_CMDMASK;
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}
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static unsigned long intel_security_flags(struct nvdimm *nvdimm,
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enum nvdimm_passphrase_type ptype)
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{
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struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
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unsigned long security_flags = 0;
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struct {
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struct nd_cmd_pkg pkg;
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struct nd_intel_get_security_state cmd;
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} nd_cmd = {
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.pkg = {
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.nd_command = NVDIMM_INTEL_GET_SECURITY_STATE,
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.nd_family = NVDIMM_FAMILY_INTEL,
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.nd_size_out =
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sizeof(struct nd_intel_get_security_state),
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.nd_fw_size =
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sizeof(struct nd_intel_get_security_state),
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},
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};
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int rc;
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if (!test_bit(NVDIMM_INTEL_GET_SECURITY_STATE, &nfit_mem->dsm_mask))
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return 0;
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/*
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* Short circuit the state retrieval while we are doing overwrite.
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* The DSM spec states that the security state is indeterminate
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* until the overwrite DSM completes.
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*/
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if (nvdimm_in_overwrite(nvdimm) && ptype == NVDIMM_USER)
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return BIT(NVDIMM_SECURITY_OVERWRITE);
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rc = nvdimm_ctl(nvdimm, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd), NULL);
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if (rc < 0 || nd_cmd.cmd.status) {
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pr_err("%s: security state retrieval failed (%d:%#x)\n",
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nvdimm_name(nvdimm), rc, nd_cmd.cmd.status);
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return 0;
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}
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/* check and see if security is enabled and locked */
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if (ptype == NVDIMM_MASTER) {
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if (nd_cmd.cmd.extended_state & ND_INTEL_SEC_ESTATE_ENABLED)
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set_bit(NVDIMM_SECURITY_UNLOCKED, &security_flags);
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else
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set_bit(NVDIMM_SECURITY_DISABLED, &security_flags);
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if (nd_cmd.cmd.extended_state & ND_INTEL_SEC_ESTATE_PLIMIT)
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set_bit(NVDIMM_SECURITY_FROZEN, &security_flags);
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return security_flags;
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}
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if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_UNSUPPORTED)
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return 0;
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if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_ENABLED) {
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if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_FROZEN ||
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nd_cmd.cmd.state & ND_INTEL_SEC_STATE_PLIMIT)
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set_bit(NVDIMM_SECURITY_FROZEN, &security_flags);
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if (nd_cmd.cmd.state & ND_INTEL_SEC_STATE_LOCKED)
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set_bit(NVDIMM_SECURITY_LOCKED, &security_flags);
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else
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set_bit(NVDIMM_SECURITY_UNLOCKED, &security_flags);
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} else
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set_bit(NVDIMM_SECURITY_DISABLED, &security_flags);
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return security_flags;
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}
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static int intel_security_freeze(struct nvdimm *nvdimm)
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{
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struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
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struct {
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struct nd_cmd_pkg pkg;
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struct nd_intel_freeze_lock cmd;
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} nd_cmd = {
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.pkg = {
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.nd_command = NVDIMM_INTEL_FREEZE_LOCK,
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.nd_family = NVDIMM_FAMILY_INTEL,
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.nd_size_out = ND_INTEL_STATUS_SIZE,
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.nd_fw_size = ND_INTEL_STATUS_SIZE,
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},
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};
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int rc;
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if (!test_bit(NVDIMM_INTEL_FREEZE_LOCK, &nfit_mem->dsm_mask))
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return -ENOTTY;
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rc = nvdimm_ctl(nvdimm, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd), NULL);
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if (rc < 0)
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return rc;
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if (nd_cmd.cmd.status)
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return -EIO;
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return 0;
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}
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static int intel_security_change_key(struct nvdimm *nvdimm,
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const struct nvdimm_key_data *old_data,
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const struct nvdimm_key_data *new_data,
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enum nvdimm_passphrase_type ptype)
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{
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struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
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unsigned int cmd = ptype == NVDIMM_MASTER ?
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NVDIMM_INTEL_SET_MASTER_PASSPHRASE :
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NVDIMM_INTEL_SET_PASSPHRASE;
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struct {
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struct nd_cmd_pkg pkg;
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struct nd_intel_set_passphrase cmd;
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} nd_cmd = {
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.pkg = {
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.nd_family = NVDIMM_FAMILY_INTEL,
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.nd_size_in = ND_INTEL_PASSPHRASE_SIZE * 2,
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.nd_size_out = ND_INTEL_STATUS_SIZE,
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.nd_fw_size = ND_INTEL_STATUS_SIZE,
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.nd_command = cmd,
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},
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};
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int rc;
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if (!test_bit(cmd, &nfit_mem->dsm_mask))
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return -ENOTTY;
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memcpy(nd_cmd.cmd.old_pass, old_data->data,
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sizeof(nd_cmd.cmd.old_pass));
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memcpy(nd_cmd.cmd.new_pass, new_data->data,
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sizeof(nd_cmd.cmd.new_pass));
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rc = nvdimm_ctl(nvdimm, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd), NULL);
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if (rc < 0)
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return rc;
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switch (nd_cmd.cmd.status) {
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case 0:
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return 0;
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case ND_INTEL_STATUS_INVALID_PASS:
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return -EINVAL;
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case ND_INTEL_STATUS_NOT_SUPPORTED:
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return -EOPNOTSUPP;
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case ND_INTEL_STATUS_INVALID_STATE:
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default:
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return -EIO;
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}
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}
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static void nvdimm_invalidate_cache(void);
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static int __maybe_unused intel_security_unlock(struct nvdimm *nvdimm,
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const struct nvdimm_key_data *key_data)
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{
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struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
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struct {
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struct nd_cmd_pkg pkg;
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struct nd_intel_unlock_unit cmd;
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} nd_cmd = {
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.pkg = {
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.nd_command = NVDIMM_INTEL_UNLOCK_UNIT,
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.nd_family = NVDIMM_FAMILY_INTEL,
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.nd_size_in = ND_INTEL_PASSPHRASE_SIZE,
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.nd_size_out = ND_INTEL_STATUS_SIZE,
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.nd_fw_size = ND_INTEL_STATUS_SIZE,
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},
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};
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int rc;
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if (!test_bit(NVDIMM_INTEL_UNLOCK_UNIT, &nfit_mem->dsm_mask))
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return -ENOTTY;
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memcpy(nd_cmd.cmd.passphrase, key_data->data,
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sizeof(nd_cmd.cmd.passphrase));
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rc = nvdimm_ctl(nvdimm, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd), NULL);
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if (rc < 0)
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return rc;
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switch (nd_cmd.cmd.status) {
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case 0:
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break;
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case ND_INTEL_STATUS_INVALID_PASS:
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return -EINVAL;
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default:
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return -EIO;
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}
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/* DIMM unlocked, invalidate all CPU caches before we read it */
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nvdimm_invalidate_cache();
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return 0;
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}
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static int intel_security_disable(struct nvdimm *nvdimm,
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const struct nvdimm_key_data *key_data)
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{
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int rc;
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struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
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struct {
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struct nd_cmd_pkg pkg;
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struct nd_intel_disable_passphrase cmd;
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} nd_cmd = {
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.pkg = {
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.nd_command = NVDIMM_INTEL_DISABLE_PASSPHRASE,
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.nd_family = NVDIMM_FAMILY_INTEL,
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.nd_size_in = ND_INTEL_PASSPHRASE_SIZE,
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.nd_size_out = ND_INTEL_STATUS_SIZE,
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.nd_fw_size = ND_INTEL_STATUS_SIZE,
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},
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};
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if (!test_bit(NVDIMM_INTEL_DISABLE_PASSPHRASE, &nfit_mem->dsm_mask))
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return -ENOTTY;
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memcpy(nd_cmd.cmd.passphrase, key_data->data,
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sizeof(nd_cmd.cmd.passphrase));
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rc = nvdimm_ctl(nvdimm, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd), NULL);
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if (rc < 0)
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return rc;
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switch (nd_cmd.cmd.status) {
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case 0:
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break;
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case ND_INTEL_STATUS_INVALID_PASS:
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return -EINVAL;
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case ND_INTEL_STATUS_INVALID_STATE:
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default:
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return -ENXIO;
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}
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return 0;
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}
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static int __maybe_unused intel_security_erase(struct nvdimm *nvdimm,
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const struct nvdimm_key_data *key,
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enum nvdimm_passphrase_type ptype)
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{
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int rc;
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struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
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unsigned int cmd = ptype == NVDIMM_MASTER ?
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NVDIMM_INTEL_MASTER_SECURE_ERASE : NVDIMM_INTEL_SECURE_ERASE;
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struct {
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struct nd_cmd_pkg pkg;
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struct nd_intel_secure_erase cmd;
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} nd_cmd = {
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.pkg = {
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.nd_family = NVDIMM_FAMILY_INTEL,
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.nd_size_in = ND_INTEL_PASSPHRASE_SIZE,
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.nd_size_out = ND_INTEL_STATUS_SIZE,
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.nd_fw_size = ND_INTEL_STATUS_SIZE,
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.nd_command = cmd,
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},
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};
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if (!test_bit(cmd, &nfit_mem->dsm_mask))
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return -ENOTTY;
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/* flush all cache before we erase DIMM */
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nvdimm_invalidate_cache();
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memcpy(nd_cmd.cmd.passphrase, key->data,
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sizeof(nd_cmd.cmd.passphrase));
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rc = nvdimm_ctl(nvdimm, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd), NULL);
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if (rc < 0)
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return rc;
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switch (nd_cmd.cmd.status) {
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case 0:
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break;
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case ND_INTEL_STATUS_NOT_SUPPORTED:
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return -EOPNOTSUPP;
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case ND_INTEL_STATUS_INVALID_PASS:
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return -EINVAL;
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case ND_INTEL_STATUS_INVALID_STATE:
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default:
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return -ENXIO;
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}
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/* DIMM erased, invalidate all CPU caches before we read it */
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nvdimm_invalidate_cache();
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return 0;
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}
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static int __maybe_unused intel_security_query_overwrite(struct nvdimm *nvdimm)
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{
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int rc;
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struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
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struct {
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struct nd_cmd_pkg pkg;
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struct nd_intel_query_overwrite cmd;
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} nd_cmd = {
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.pkg = {
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.nd_command = NVDIMM_INTEL_QUERY_OVERWRITE,
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.nd_family = NVDIMM_FAMILY_INTEL,
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.nd_size_out = ND_INTEL_STATUS_SIZE,
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.nd_fw_size = ND_INTEL_STATUS_SIZE,
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},
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};
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if (!test_bit(NVDIMM_INTEL_QUERY_OVERWRITE, &nfit_mem->dsm_mask))
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return -ENOTTY;
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rc = nvdimm_ctl(nvdimm, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd), NULL);
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if (rc < 0)
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return rc;
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switch (nd_cmd.cmd.status) {
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case 0:
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break;
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case ND_INTEL_STATUS_OQUERY_INPROGRESS:
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return -EBUSY;
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default:
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return -ENXIO;
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}
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/* flush all cache before we make the nvdimms available */
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nvdimm_invalidate_cache();
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return 0;
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}
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static int __maybe_unused intel_security_overwrite(struct nvdimm *nvdimm,
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const struct nvdimm_key_data *nkey)
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{
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int rc;
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struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
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struct {
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struct nd_cmd_pkg pkg;
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struct nd_intel_overwrite cmd;
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} nd_cmd = {
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.pkg = {
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.nd_command = NVDIMM_INTEL_OVERWRITE,
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.nd_family = NVDIMM_FAMILY_INTEL,
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.nd_size_in = ND_INTEL_PASSPHRASE_SIZE,
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.nd_size_out = ND_INTEL_STATUS_SIZE,
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.nd_fw_size = ND_INTEL_STATUS_SIZE,
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},
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};
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if (!test_bit(NVDIMM_INTEL_OVERWRITE, &nfit_mem->dsm_mask))
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return -ENOTTY;
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/* flush all cache before we erase DIMM */
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nvdimm_invalidate_cache();
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memcpy(nd_cmd.cmd.passphrase, nkey->data,
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sizeof(nd_cmd.cmd.passphrase));
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rc = nvdimm_ctl(nvdimm, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd), NULL);
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if (rc < 0)
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return rc;
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switch (nd_cmd.cmd.status) {
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case 0:
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return 0;
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case ND_INTEL_STATUS_OVERWRITE_UNSUPPORTED:
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return -ENOTSUPP;
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case ND_INTEL_STATUS_INVALID_PASS:
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return -EINVAL;
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case ND_INTEL_STATUS_INVALID_STATE:
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default:
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return -ENXIO;
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}
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}
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/*
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* TODO: define a cross arch wbinvd equivalent when/if
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* NVDIMM_FAMILY_INTEL command support arrives on another arch.
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*/
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#ifdef CONFIG_X86
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static void nvdimm_invalidate_cache(void)
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{
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wbinvd_on_all_cpus();
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}
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#else
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static void nvdimm_invalidate_cache(void)
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{
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WARN_ON_ONCE("cache invalidation required after unlock\n");
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}
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#endif
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static const struct nvdimm_security_ops __intel_security_ops = {
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.get_flags = intel_security_flags,
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.freeze = intel_security_freeze,
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.change_key = intel_security_change_key,
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.disable = intel_security_disable,
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#ifdef CONFIG_X86
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.unlock = intel_security_unlock,
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.erase = intel_security_erase,
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.overwrite = intel_security_overwrite,
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.query_overwrite = intel_security_query_overwrite,
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#endif
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};
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const struct nvdimm_security_ops *intel_security_ops = &__intel_security_ops;
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static int intel_bus_fwa_businfo(struct nvdimm_bus_descriptor *nd_desc,
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struct nd_intel_bus_fw_activate_businfo *info)
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{
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struct {
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struct nd_cmd_pkg pkg;
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struct nd_intel_bus_fw_activate_businfo cmd;
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} nd_cmd = {
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.pkg = {
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.nd_command = NVDIMM_BUS_INTEL_FW_ACTIVATE_BUSINFO,
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.nd_family = NVDIMM_BUS_FAMILY_INTEL,
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.nd_size_out =
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sizeof(struct nd_intel_bus_fw_activate_businfo),
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.nd_fw_size =
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sizeof(struct nd_intel_bus_fw_activate_businfo),
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},
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};
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int rc;
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rc = nd_desc->ndctl(nd_desc, NULL, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd),
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NULL);
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*info = nd_cmd.cmd;
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return rc;
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}
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/* The fw_ops expect to be called with the nvdimm_bus_lock() held */
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static enum nvdimm_fwa_state intel_bus_fwa_state(
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struct nvdimm_bus_descriptor *nd_desc)
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{
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struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
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struct nd_intel_bus_fw_activate_businfo info;
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struct device *dev = acpi_desc->dev;
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enum nvdimm_fwa_state state;
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int rc;
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/*
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* It should not be possible for platform firmware to return
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* busy because activate is a synchronous operation. Treat it
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* similar to invalid, i.e. always refresh / poll the status.
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*/
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switch (acpi_desc->fwa_state) {
|
|
case NVDIMM_FWA_INVALID:
|
|
case NVDIMM_FWA_BUSY:
|
|
break;
|
|
default:
|
|
/* check if capability needs to be refreshed */
|
|
if (acpi_desc->fwa_cap == NVDIMM_FWA_CAP_INVALID)
|
|
break;
|
|
return acpi_desc->fwa_state;
|
|
}
|
|
|
|
/* Refresh with platform firmware */
|
|
rc = intel_bus_fwa_businfo(nd_desc, &info);
|
|
if (rc)
|
|
return NVDIMM_FWA_INVALID;
|
|
|
|
switch (info.state) {
|
|
case ND_INTEL_FWA_IDLE:
|
|
state = NVDIMM_FWA_IDLE;
|
|
break;
|
|
case ND_INTEL_FWA_BUSY:
|
|
state = NVDIMM_FWA_BUSY;
|
|
break;
|
|
case ND_INTEL_FWA_ARMED:
|
|
if (info.activate_tmo > info.max_quiesce_tmo)
|
|
state = NVDIMM_FWA_ARM_OVERFLOW;
|
|
else
|
|
state = NVDIMM_FWA_ARMED;
|
|
break;
|
|
default:
|
|
dev_err_once(dev, "invalid firmware activate state %d\n",
|
|
info.state);
|
|
return NVDIMM_FWA_INVALID;
|
|
}
|
|
|
|
/*
|
|
* Capability data is available in the same payload as state. It
|
|
* is expected to be static.
|
|
*/
|
|
if (acpi_desc->fwa_cap == NVDIMM_FWA_CAP_INVALID) {
|
|
if (info.capability & ND_INTEL_BUS_FWA_CAP_FWQUIESCE)
|
|
acpi_desc->fwa_cap = NVDIMM_FWA_CAP_QUIESCE;
|
|
else if (info.capability & ND_INTEL_BUS_FWA_CAP_OSQUIESCE) {
|
|
/*
|
|
* Skip hibernate cycle by default if platform
|
|
* indicates that it does not need devices to be
|
|
* quiesced.
|
|
*/
|
|
acpi_desc->fwa_cap = NVDIMM_FWA_CAP_LIVE;
|
|
} else
|
|
acpi_desc->fwa_cap = NVDIMM_FWA_CAP_NONE;
|
|
}
|
|
|
|
acpi_desc->fwa_state = state;
|
|
|
|
return state;
|
|
}
|
|
|
|
static enum nvdimm_fwa_capability intel_bus_fwa_capability(
|
|
struct nvdimm_bus_descriptor *nd_desc)
|
|
{
|
|
struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
|
|
|
|
if (acpi_desc->fwa_cap > NVDIMM_FWA_CAP_INVALID)
|
|
return acpi_desc->fwa_cap;
|
|
|
|
if (intel_bus_fwa_state(nd_desc) > NVDIMM_FWA_INVALID)
|
|
return acpi_desc->fwa_cap;
|
|
|
|
return NVDIMM_FWA_CAP_INVALID;
|
|
}
|
|
|
|
static int intel_bus_fwa_activate(struct nvdimm_bus_descriptor *nd_desc)
|
|
{
|
|
struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
|
|
struct {
|
|
struct nd_cmd_pkg pkg;
|
|
struct nd_intel_bus_fw_activate cmd;
|
|
} nd_cmd = {
|
|
.pkg = {
|
|
.nd_command = NVDIMM_BUS_INTEL_FW_ACTIVATE,
|
|
.nd_family = NVDIMM_BUS_FAMILY_INTEL,
|
|
.nd_size_in = sizeof(nd_cmd.cmd.iodev_state),
|
|
.nd_size_out =
|
|
sizeof(struct nd_intel_bus_fw_activate),
|
|
.nd_fw_size =
|
|
sizeof(struct nd_intel_bus_fw_activate),
|
|
},
|
|
/*
|
|
* Even though activate is run from a suspended context,
|
|
* for safety, still ask platform firmware to force
|
|
* quiesce devices by default. Let a module
|
|
* parameter override that policy.
|
|
*/
|
|
.cmd = {
|
|
.iodev_state = acpi_desc->fwa_noidle
|
|
? ND_INTEL_BUS_FWA_IODEV_OS_IDLE
|
|
: ND_INTEL_BUS_FWA_IODEV_FORCE_IDLE,
|
|
},
|
|
};
|
|
int rc;
|
|
|
|
switch (intel_bus_fwa_state(nd_desc)) {
|
|
case NVDIMM_FWA_ARMED:
|
|
case NVDIMM_FWA_ARM_OVERFLOW:
|
|
break;
|
|
default:
|
|
return -ENXIO;
|
|
}
|
|
|
|
rc = nd_desc->ndctl(nd_desc, NULL, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd),
|
|
NULL);
|
|
|
|
/*
|
|
* Whether the command succeeded, or failed, the agent checking
|
|
* for the result needs to query the DIMMs individually.
|
|
* Increment the activation count to invalidate all the DIMM
|
|
* states at once (it's otherwise not possible to take
|
|
* acpi_desc->init_mutex in this context)
|
|
*/
|
|
acpi_desc->fwa_state = NVDIMM_FWA_INVALID;
|
|
acpi_desc->fwa_count++;
|
|
|
|
dev_dbg(acpi_desc->dev, "result: %d\n", rc);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static const struct nvdimm_bus_fw_ops __intel_bus_fw_ops = {
|
|
.activate_state = intel_bus_fwa_state,
|
|
.capability = intel_bus_fwa_capability,
|
|
.activate = intel_bus_fwa_activate,
|
|
};
|
|
|
|
const struct nvdimm_bus_fw_ops *intel_bus_fw_ops = &__intel_bus_fw_ops;
|
|
|
|
static int intel_fwa_dimminfo(struct nvdimm *nvdimm,
|
|
struct nd_intel_fw_activate_dimminfo *info)
|
|
{
|
|
struct {
|
|
struct nd_cmd_pkg pkg;
|
|
struct nd_intel_fw_activate_dimminfo cmd;
|
|
} nd_cmd = {
|
|
.pkg = {
|
|
.nd_command = NVDIMM_INTEL_FW_ACTIVATE_DIMMINFO,
|
|
.nd_family = NVDIMM_FAMILY_INTEL,
|
|
.nd_size_out =
|
|
sizeof(struct nd_intel_fw_activate_dimminfo),
|
|
.nd_fw_size =
|
|
sizeof(struct nd_intel_fw_activate_dimminfo),
|
|
},
|
|
};
|
|
int rc;
|
|
|
|
rc = nvdimm_ctl(nvdimm, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd), NULL);
|
|
*info = nd_cmd.cmd;
|
|
return rc;
|
|
}
|
|
|
|
static enum nvdimm_fwa_state intel_fwa_state(struct nvdimm *nvdimm)
|
|
{
|
|
struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
|
|
struct acpi_nfit_desc *acpi_desc = nfit_mem->acpi_desc;
|
|
struct nd_intel_fw_activate_dimminfo info;
|
|
int rc;
|
|
|
|
/*
|
|
* Similar to the bus state, since activate is synchronous the
|
|
* busy state should resolve within the context of 'activate'.
|
|
*/
|
|
switch (nfit_mem->fwa_state) {
|
|
case NVDIMM_FWA_INVALID:
|
|
case NVDIMM_FWA_BUSY:
|
|
break;
|
|
default:
|
|
/* If no activations occurred the old state is still valid */
|
|
if (nfit_mem->fwa_count == acpi_desc->fwa_count)
|
|
return nfit_mem->fwa_state;
|
|
}
|
|
|
|
rc = intel_fwa_dimminfo(nvdimm, &info);
|
|
if (rc)
|
|
return NVDIMM_FWA_INVALID;
|
|
|
|
switch (info.state) {
|
|
case ND_INTEL_FWA_IDLE:
|
|
nfit_mem->fwa_state = NVDIMM_FWA_IDLE;
|
|
break;
|
|
case ND_INTEL_FWA_BUSY:
|
|
nfit_mem->fwa_state = NVDIMM_FWA_BUSY;
|
|
break;
|
|
case ND_INTEL_FWA_ARMED:
|
|
nfit_mem->fwa_state = NVDIMM_FWA_ARMED;
|
|
break;
|
|
default:
|
|
nfit_mem->fwa_state = NVDIMM_FWA_INVALID;
|
|
break;
|
|
}
|
|
|
|
switch (info.result) {
|
|
case ND_INTEL_DIMM_FWA_NONE:
|
|
nfit_mem->fwa_result = NVDIMM_FWA_RESULT_NONE;
|
|
break;
|
|
case ND_INTEL_DIMM_FWA_SUCCESS:
|
|
nfit_mem->fwa_result = NVDIMM_FWA_RESULT_SUCCESS;
|
|
break;
|
|
case ND_INTEL_DIMM_FWA_NOTSTAGED:
|
|
nfit_mem->fwa_result = NVDIMM_FWA_RESULT_NOTSTAGED;
|
|
break;
|
|
case ND_INTEL_DIMM_FWA_NEEDRESET:
|
|
nfit_mem->fwa_result = NVDIMM_FWA_RESULT_NEEDRESET;
|
|
break;
|
|
case ND_INTEL_DIMM_FWA_MEDIAFAILED:
|
|
case ND_INTEL_DIMM_FWA_ABORT:
|
|
case ND_INTEL_DIMM_FWA_NOTSUPP:
|
|
case ND_INTEL_DIMM_FWA_ERROR:
|
|
default:
|
|
nfit_mem->fwa_result = NVDIMM_FWA_RESULT_FAIL;
|
|
break;
|
|
}
|
|
|
|
nfit_mem->fwa_count = acpi_desc->fwa_count;
|
|
|
|
return nfit_mem->fwa_state;
|
|
}
|
|
|
|
static enum nvdimm_fwa_result intel_fwa_result(struct nvdimm *nvdimm)
|
|
{
|
|
struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
|
|
struct acpi_nfit_desc *acpi_desc = nfit_mem->acpi_desc;
|
|
|
|
if (nfit_mem->fwa_count == acpi_desc->fwa_count
|
|
&& nfit_mem->fwa_result > NVDIMM_FWA_RESULT_INVALID)
|
|
return nfit_mem->fwa_result;
|
|
|
|
if (intel_fwa_state(nvdimm) > NVDIMM_FWA_INVALID)
|
|
return nfit_mem->fwa_result;
|
|
|
|
return NVDIMM_FWA_RESULT_INVALID;
|
|
}
|
|
|
|
static int intel_fwa_arm(struct nvdimm *nvdimm, enum nvdimm_fwa_trigger arm)
|
|
{
|
|
struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
|
|
struct acpi_nfit_desc *acpi_desc = nfit_mem->acpi_desc;
|
|
struct {
|
|
struct nd_cmd_pkg pkg;
|
|
struct nd_intel_fw_activate_arm cmd;
|
|
} nd_cmd = {
|
|
.pkg = {
|
|
.nd_command = NVDIMM_INTEL_FW_ACTIVATE_ARM,
|
|
.nd_family = NVDIMM_FAMILY_INTEL,
|
|
.nd_size_in = sizeof(nd_cmd.cmd.activate_arm),
|
|
.nd_size_out =
|
|
sizeof(struct nd_intel_fw_activate_arm),
|
|
.nd_fw_size =
|
|
sizeof(struct nd_intel_fw_activate_arm),
|
|
},
|
|
.cmd = {
|
|
.activate_arm = arm == NVDIMM_FWA_ARM
|
|
? ND_INTEL_DIMM_FWA_ARM
|
|
: ND_INTEL_DIMM_FWA_DISARM,
|
|
},
|
|
};
|
|
int rc;
|
|
|
|
switch (intel_fwa_state(nvdimm)) {
|
|
case NVDIMM_FWA_INVALID:
|
|
return -ENXIO;
|
|
case NVDIMM_FWA_BUSY:
|
|
return -EBUSY;
|
|
case NVDIMM_FWA_IDLE:
|
|
if (arm == NVDIMM_FWA_DISARM)
|
|
return 0;
|
|
break;
|
|
case NVDIMM_FWA_ARMED:
|
|
if (arm == NVDIMM_FWA_ARM)
|
|
return 0;
|
|
break;
|
|
default:
|
|
return -ENXIO;
|
|
}
|
|
|
|
/*
|
|
* Invalidate the bus-level state, now that we're committed to
|
|
* changing the 'arm' state.
|
|
*/
|
|
acpi_desc->fwa_state = NVDIMM_FWA_INVALID;
|
|
nfit_mem->fwa_state = NVDIMM_FWA_INVALID;
|
|
|
|
rc = nvdimm_ctl(nvdimm, ND_CMD_CALL, &nd_cmd, sizeof(nd_cmd), NULL);
|
|
|
|
dev_dbg(acpi_desc->dev, "%s result: %d\n", arm == NVDIMM_FWA_ARM
|
|
? "arm" : "disarm", rc);
|
|
return rc;
|
|
}
|
|
|
|
static const struct nvdimm_fw_ops __intel_fw_ops = {
|
|
.activate_state = intel_fwa_state,
|
|
.activate_result = intel_fwa_result,
|
|
.arm = intel_fwa_arm,
|
|
};
|
|
|
|
const struct nvdimm_fw_ops *intel_fw_ops = &__intel_fw_ops;
|