Signed-off-by: Sweta Kumari <[email protected]>
Reviewed-by: Alok Rathore <[email protected]>
Reviewed-by: Krishna Kanth Reddy <[email protected]>
---
hw/cxl/cxl-mailbox-utils.c | 91 +++++++++++++++++++++++++++++++++++++
hw/mem/cxl_type3.c | 20 ++++++++
include/hw/cxl/cxl_device.h | 24 ++++++++++
3 files changed, 135 insertions(+)
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index 9c7ea5bc35..7a054c059d 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -86,6 +86,9 @@ enum {
#define GET_PARTITION_INFO 0x0
#define GET_LSA 0x2
#define SET_LSA 0x3
+ HEALTH_INFO_ALERTS = 0x42,
+ #define GET_ALERT_CONFIGURATION 0x1
+ #define SET_ALERT_CONFIGURATION 0x2
SANITIZE = 0x44,
#define OVERWRITE 0x0
#define SECURE_ERASE 0x1
@@ -1625,6 +1628,90 @@ static CXLRetCode cmd_ccls_set_lsa(const struct cxl_cmd
*cmd,
return CXL_MBOX_SUCCESS;
}
+/* CXL r3.1 Section 8.2.9.9.3.2 Get Alert Configuration (Opcode 4201h) */
+static CXLRetCode cmd_get_alert_config(const struct cxl_cmd *cmd,
+ uint8_t *payload_in,
+ size_t len_in,
+ uint8_t *payload_out,
+ size_t *len_out,
+ CXLCCI *cci)
+{
+ CXLType3Dev *ct3d = CXL_TYPE3(cci->d);
+ CXLAlertConfig *out = (void *)payload_out;
+ memcpy(out, &ct3d->alert_config, sizeof(ct3d->alert_config));
+ *len_out = sizeof(ct3d->alert_config);
+ return CXL_MBOX_SUCCESS;
+
+}
+
+/* CXL r3.1 Section 8.2.9.9.3.3 Set Alert Configuration (Opcode 4202h) */
+static CXLRetCode cmd_set_alert_config(const struct cxl_cmd *cmd,
+ uint8_t *payload_in,
+ size_t len_in,
+ uint8_t *payload_out,
+ size_t *len_out,
+ CXLCCI *cci)
+{
+ CXLType3Dev *ct3d = CXL_TYPE3(cci->d);
+ CXLAlertConfig *alert_config = &ct3d->alert_config;
+ struct {
+ CXLValidEnableAlerts valid_alert_actions;
+ CXLValidEnableAlerts enable_alert_actions;
+ uint8_t lupwt;
+ uint8_t reserve;
+ uint16_t dotpwt;
+ uint16_t dutpwt;
+ uint16_t cvmepwt;
+ uint16_t cpmepwt;
+ } QEMU_PACKED *in = (void *)payload_in;
+
+ if (in->valid_alert_actions.lupwt) {
+ if ((in->lupwt > 100) || (in->lupwt >= alert_config->lucat)) {
+ return CXL_MBOX_INVALID_INPUT;
+ }
+
+ if (in->enable_alert_actions.lupwt) {
+ alert_config->lupwt = in->lupwt;
+ }
+ alert_config->enable_alerts.lupwt = in->enable_alert_actions.lupwt;
+ }
+
+ if (in->valid_alert_actions.dotpwt) {
+ if (in->dotpwt >= alert_config->dotcat) {
+ return CXL_MBOX_INVALID_INPUT;
+ }
+ if (in->enable_alert_actions.dotpwt) {
+ alert_config->dotpwt = in->dotpwt;
+ }
+ alert_config->enable_alerts.dotpwt = in->enable_alert_actions.dotpwt;
+ }
+
+ if (in->valid_alert_actions.dutpwt) {
+ if (in->dutpwt < alert_config->dutcat) {
+ return CXL_MBOX_INVALID_INPUT;
+ }
+ if (in->enable_alert_actions.dutpwt) {
+ alert_config->dutpwt = in->dutpwt;
+ }
+ alert_config->enable_alerts.dutpwt = in->enable_alert_actions.dutpwt;
+ }
+
+ if (in->valid_alert_actions.cvmepwt) {
+ if (in->enable_alert_actions.cvmepwt) {
+ alert_config->cvmepwt = in->cvmepwt;
+ }
+ alert_config->enable_alerts.cvmepwt = in->valid_alert_actions.cvmepwt;
+ }
+
+ if (in->valid_alert_actions.cpmepwt) {
+ if (in->enable_alert_actions.cpmepwt) {
+ alert_config->cpmepwt = in->cpmepwt;
+ }
+ alert_config->enable_alerts.cpmepwt = in->valid_alert_actions.cpmepwt;
+ }
+ return CXL_MBOX_SUCCESS;
+}
+
/* Perform the actual device zeroing */
static void __do_sanitization(CXLType3Dev *ct3d)
{
@@ -2859,6 +2946,10 @@ static const struct cxl_cmd cxl_cmd_set[256][256] = {
[CCLS][GET_LSA] = { "CCLS_GET_LSA", cmd_ccls_get_lsa, 8, 0 },
[CCLS][SET_LSA] = { "CCLS_SET_LSA", cmd_ccls_set_lsa,
~0, CXL_MBOX_IMMEDIATE_CONFIG_CHANGE | CXL_MBOX_IMMEDIATE_DATA_CHANGE
},
+ [HEALTH_INFO_ALERTS][GET_ALERT_CONFIGURATION] = {"GET_ALERT_CONFIGURATION",
+ cmd_get_alert_config, 0, 0 },
+ [HEALTH_INFO_ALERTS][SET_ALERT_CONFIGURATION] = {"SET_ALERT_CONFIGURATION",
+ cmd_set_alert_config, 12, CXL_MBOX_IMMEDIATE_POLICY_CHANGE },
[SANITIZE][OVERWRITE] = { "SANITIZE_OVERWRITE", cmd_sanitize_overwrite, 0,
(CXL_MBOX_IMMEDIATE_DATA_CHANGE |
CXL_MBOX_SECURITY_STATE_CHANGE |
diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
index 5f365afb4d..ce5a4962da 100644
--- a/hw/mem/cxl_type3.c
+++ b/hw/mem/cxl_type3.c
@@ -956,6 +956,25 @@ static DOEProtocol doe_comp_prot[] = {
{ }
};
+/*
+ * Initialize CXL device alerts with default threshold values.
+ */
+static void init_alert_config(CXLType3Dev *ct3d)
+{
+ CXLAlertConfig *alert_config = &ct3d->alert_config;
+
+ memset(&alert_config->valid_alerts, 0, sizeof(CXLValidEnableAlerts));
+ memset(&alert_config->enable_alerts, 0, sizeof(CXLValidEnableAlerts));
+ alert_config->lucat = 75;
+ alert_config->lupwt = 0;
+ alert_config->dotcat = 35;
+ alert_config->dutcat = 10;
+ alert_config->dotpwt = 25;
+ alert_config->dutpwt = 20;
+ alert_config->cvmepwt = 0;
+ alert_config->cpmepwt = 0;
+}
+
void ct3_realize(PCIDevice *pci_dev, Error **errp)
{
ERRP_GUARD();
@@ -1030,6 +1049,7 @@ void ct3_realize(PCIDevice *pci_dev, Error **errp)
goto err_free_special_ops;
}
+ init_alert_config(ct3d);
pcie_cap_deverr_init(pci_dev);
/* Leave a bit of room for expansion */
rc = pcie_aer_init(pci_dev, PCI_ERR_VER, 0x200, PCI_ERR_SIZEOF, NULL);
diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
index a64739be25..6acae7d74d 100644
--- a/include/hw/cxl/cxl_device.h
+++ b/include/hw/cxl/cxl_device.h
@@ -581,6 +581,28 @@ typedef struct CXLSetFeatureInfo {
size_t data_size;
} CXLSetFeatureInfo;
+typedef struct CXLValidEnableAlerts {
+ uint8_t lupwt:1;
+ uint8_t dotpwt:1;
+ uint8_t dutpwt:1;
+ uint8_t cvmepwt:1;
+ uint8_t cpmepwt:1;
+ uint8_t reserved:3;
+} CXLValidEnableAlerts;
+
+typedef struct CXLAlertConfig {
+ CXLValidEnableAlerts valid_alerts;
+ CXLValidEnableAlerts enable_alerts;
+ uint8_t lucat;
+ uint8_t lupwt;
+ uint16_t dotcat;
+ uint16_t dutcat;
+ uint16_t dotpwt;
+ uint16_t dutpwt;
+ uint16_t cvmepwt;
+ uint16_t cpmepwt;
+} QEMU_PACKED CXLAlertConfig;
+
struct CXLType3Dev {
/* Private */
PCIDevice parent_obj;
@@ -605,6 +627,8 @@ struct CXLType3Dev {
CXLCCI vdm_fm_owned_ld_mctp_cci;
CXLCCI ld0_cci;
+ CXLAlertConfig alert_config;
+
/* PCIe link characteristics */
PCIExpLinkSpeed speed;
PCIExpLinkWidth width;
--
2.34.1
