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-rw-r--r--hw/cxl/cxl-component-utils.c18
-rw-r--r--hw/cxl/cxl-mailbox-utils.c46
-rw-r--r--hw/mem/Kconfig5
-rw-r--r--hw/mem/cxl_type3.c162
-rw-r--r--hw/mem/meson.build1
-rw-r--r--include/hw/cxl/cxl_device.h15
-rw-r--r--include/hw/cxl/cxl_pci.h21
-rw-r--r--include/hw/pci/pci_ids.h1
8 files changed, 269 insertions, 0 deletions
diff --git a/hw/cxl/cxl-component-utils.c b/hw/cxl/cxl-component-utils.c
index 9457a1b029..afc97b17c2 100644
--- a/hw/cxl/cxl-component-utils.c
+++ b/hw/cxl/cxl-component-utils.c
@@ -252,6 +252,24 @@ void cxl_component_create_dvsec(CXLComponentState *cxl,
/* Configure write masks */
switch (type) {
case PCIE_CXL_DEVICE_DVSEC:
+ /* Cntrl RW Lock - so needs explicit blocking when lock is set */
+ wmask[offset + offsetof(CXLDVSECDevice, ctrl)] = 0xFD;
+ wmask[offset + offsetof(CXLDVSECDevice, ctrl) + 1] = 0x4F;
+ /* Status is RW1CS */
+ wmask[offset + offsetof(CXLDVSECDevice, ctrl2)] = 0x0F;
+ /* Lock is RW Once */
+ wmask[offset + offsetof(CXLDVSECDevice, lock)] = 0x01;
+ /* range1/2_base_high/low is RW Lock */
+ wmask[offset + offsetof(CXLDVSECDevice, range1_base_hi)] = 0xFF;
+ wmask[offset + offsetof(CXLDVSECDevice, range1_base_hi) + 1] = 0xFF;
+ wmask[offset + offsetof(CXLDVSECDevice, range1_base_hi) + 2] = 0xFF;
+ wmask[offset + offsetof(CXLDVSECDevice, range1_base_hi) + 3] = 0xFF;
+ wmask[offset + offsetof(CXLDVSECDevice, range1_base_lo) + 3] = 0xF0;
+ wmask[offset + offsetof(CXLDVSECDevice, range2_base_hi)] = 0xFF;
+ wmask[offset + offsetof(CXLDVSECDevice, range2_base_hi) + 1] = 0xFF;
+ wmask[offset + offsetof(CXLDVSECDevice, range2_base_hi) + 2] = 0xFF;
+ wmask[offset + offsetof(CXLDVSECDevice, range2_base_hi) + 3] = 0xFF;
+ wmask[offset + offsetof(CXLDVSECDevice, range2_base_lo) + 3] = 0xF0;
break;
case NON_CXL_FUNCTION_MAP_DVSEC:
break; /* Not yet implemented */
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index db473135c7..4ae0561dfc 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -50,6 +50,8 @@ enum {
LOGS = 0x04,
#define GET_SUPPORTED 0x0
#define GET_LOG 0x1
+ IDENTIFY = 0x40,
+ #define MEMORY_DEVICE 0x0
};
/* 8.2.8.4.5.1 Command Return Codes */
@@ -214,6 +216,48 @@ static ret_code cmd_logs_get_log(struct cxl_cmd *cmd,
return CXL_MBOX_SUCCESS;
}
+/* 8.2.9.5.1.1 */
+static ret_code cmd_identify_memory_device(struct cxl_cmd *cmd,
+ CXLDeviceState *cxl_dstate,
+ uint16_t *len)
+{
+ struct {
+ char fw_revision[0x10];
+ uint64_t total_capacity;
+ uint64_t volatile_capacity;
+ uint64_t persistent_capacity;
+ uint64_t partition_align;
+ uint16_t info_event_log_size;
+ uint16_t warning_event_log_size;
+ uint16_t failure_event_log_size;
+ uint16_t fatal_event_log_size;
+ uint32_t lsa_size;
+ uint8_t poison_list_max_mer[3];
+ uint16_t inject_poison_limit;
+ uint8_t poison_caps;
+ uint8_t qos_telemetry_caps;
+ } QEMU_PACKED *id;
+ QEMU_BUILD_BUG_ON(sizeof(*id) != 0x43);
+
+ uint64_t size = cxl_dstate->pmem_size;
+
+ if (!QEMU_IS_ALIGNED(size, 256 << 20)) {
+ return CXL_MBOX_INTERNAL_ERROR;
+ }
+
+ id = (void *)cmd->payload;
+ memset(id, 0, sizeof(*id));
+
+ /* PMEM only */
+ snprintf(id->fw_revision, 0x10, "BWFW VERSION %02d", 0);
+
+ id->total_capacity = size / (256 << 20);
+ id->persistent_capacity = size / (256 << 20);
+
+ *len = sizeof(*id);
+ return CXL_MBOX_SUCCESS;
+}
+
#define IMMEDIATE_CONFIG_CHANGE (1 << 1)
#define IMMEDIATE_POLICY_CHANGE (1 << 3)
#define IMMEDIATE_LOG_CHANGE (1 << 4)
@@ -231,6 +275,8 @@ static struct cxl_cmd cxl_cmd_set[256][256] = {
[TIMESTAMP][SET] = { "TIMESTAMP_SET", cmd_timestamp_set, 8, IMMEDIATE_POLICY_CHANGE },
[LOGS][GET_SUPPORTED] = { "LOGS_GET_SUPPORTED", cmd_logs_get_supported, 0, 0 },
[LOGS][GET_LOG] = { "LOGS_GET_LOG", cmd_logs_get_log, 0x18, 0 },
+ [IDENTIFY][MEMORY_DEVICE] = { "IDENTIFY_MEMORY_DEVICE",
+ cmd_identify_memory_device, 0, 0 },
};
void cxl_process_mailbox(CXLDeviceState *cxl_dstate)
diff --git a/hw/mem/Kconfig b/hw/mem/Kconfig
index 03dbb3c7df..73c5ae8ad9 100644
--- a/hw/mem/Kconfig
+++ b/hw/mem/Kconfig
@@ -11,3 +11,8 @@ config NVDIMM
config SPARSE_MEM
bool
+
+config CXL_MEM_DEVICE
+ bool
+ default y if CXL
+ select MEM_DEVICE
diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
new file mode 100644
index 0000000000..290c088dd6
--- /dev/null
+++ b/hw/mem/cxl_type3.c
@@ -0,0 +1,162 @@
+#include "qemu/osdep.h"
+#include "qemu/units.h"
+#include "qemu/error-report.h"
+#include "hw/mem/memory-device.h"
+#include "hw/mem/pc-dimm.h"
+#include "hw/pci/pci.h"
+#include "hw/qdev-properties.h"
+#include "qapi/error.h"
+#include "qemu/log.h"
+#include "qemu/module.h"
+#include "qemu/range.h"
+#include "qemu/rcu.h"
+#include "sysemu/hostmem.h"
+#include "hw/cxl/cxl.h"
+
+static void build_dvsecs(CXLType3Dev *ct3d)
+{
+ CXLComponentState *cxl_cstate = &ct3d->cxl_cstate;
+ uint8_t *dvsec;
+
+ dvsec = (uint8_t *)&(CXLDVSECDevice){
+ .cap = 0x1e,
+ .ctrl = 0x2,
+ .status2 = 0x2,
+ .range1_size_hi = ct3d->hostmem->size >> 32,
+ .range1_size_lo = (2 << 5) | (2 << 2) | 0x3 |
+ (ct3d->hostmem->size & 0xF0000000),
+ .range1_base_hi = 0,
+ .range1_base_lo = 0,
+ };
+ cxl_component_create_dvsec(cxl_cstate, CXL2_TYPE3_DEVICE,
+ PCIE_CXL_DEVICE_DVSEC_LENGTH,
+ PCIE_CXL_DEVICE_DVSEC,
+ PCIE_CXL2_DEVICE_DVSEC_REVID, dvsec);
+
+ dvsec = (uint8_t *)&(CXLDVSECRegisterLocator){
+ .rsvd = 0,
+ .reg0_base_lo = RBI_COMPONENT_REG | CXL_COMPONENT_REG_BAR_IDX,
+ .reg0_base_hi = 0,
+ .reg1_base_lo = RBI_CXL_DEVICE_REG | CXL_DEVICE_REG_BAR_IDX,
+ .reg1_base_hi = 0,
+ };
+ cxl_component_create_dvsec(cxl_cstate, CXL2_TYPE3_DEVICE,
+ REG_LOC_DVSEC_LENGTH, REG_LOC_DVSEC,
+ REG_LOC_DVSEC_REVID, dvsec);
+ dvsec = (uint8_t *)&(CXLDVSECDeviceGPF){
+ .phase2_duration = 0x603, /* 3 seconds */
+ .phase2_power = 0x33, /* 0x33 miliwatts */
+ };
+ cxl_component_create_dvsec(cxl_cstate, CXL2_TYPE3_DEVICE,
+ GPF_DEVICE_DVSEC_LENGTH, GPF_PORT_DVSEC,
+ GPF_DEVICE_DVSEC_REVID, dvsec);
+}
+
+static bool cxl_setup_memory(CXLType3Dev *ct3d, Error **errp)
+{
+ MemoryRegion *mr;
+
+ if (!ct3d->hostmem) {
+ error_setg(errp, "memdev property must be set");
+ return false;
+ }
+
+ mr = host_memory_backend_get_memory(ct3d->hostmem);
+ if (!mr) {
+ error_setg(errp, "memdev property must be set");
+ return false;
+ }
+ memory_region_set_nonvolatile(mr, true);
+ memory_region_set_enabled(mr, true);
+ host_memory_backend_set_mapped(ct3d->hostmem, true);
+ ct3d->cxl_dstate.pmem_size = ct3d->hostmem->size;
+
+ return true;
+}
+
+static void ct3_realize(PCIDevice *pci_dev, Error **errp)
+{
+ CXLType3Dev *ct3d = CXL_TYPE3(pci_dev);
+ CXLComponentState *cxl_cstate = &ct3d->cxl_cstate;
+ ComponentRegisters *regs = &cxl_cstate->crb;
+ MemoryRegion *mr = &regs->component_registers;
+ uint8_t *pci_conf = pci_dev->config;
+
+ if (!cxl_setup_memory(ct3d, errp)) {
+ return;
+ }
+
+ pci_config_set_prog_interface(pci_conf, 0x10);
+ pci_config_set_class(pci_conf, PCI_CLASS_MEMORY_CXL);
+
+ pcie_endpoint_cap_init(pci_dev, 0x80);
+ cxl_cstate->dvsec_offset = 0x100;
+
+ ct3d->cxl_cstate.pdev = pci_dev;
+ build_dvsecs(ct3d);
+
+ cxl_component_register_block_init(OBJECT(pci_dev), cxl_cstate,
+ TYPE_CXL_TYPE3);
+
+ pci_register_bar(
+ pci_dev, CXL_COMPONENT_REG_BAR_IDX,
+ PCI_BASE_ADDRESS_SPACE_MEMORY | PCI_BASE_ADDRESS_MEM_TYPE_64, mr);
+
+ cxl_device_register_block_init(OBJECT(pci_dev), &ct3d->cxl_dstate);
+ pci_register_bar(pci_dev, CXL_DEVICE_REG_BAR_IDX,
+ PCI_BASE_ADDRESS_SPACE_MEMORY |
+ PCI_BASE_ADDRESS_MEM_TYPE_64,
+ &ct3d->cxl_dstate.device_registers);
+}
+
+static void ct3d_reset(DeviceState *dev)
+{
+ CXLType3Dev *ct3d = CXL_TYPE3(dev);
+ uint32_t *reg_state = ct3d->cxl_cstate.crb.cache_mem_registers;
+ uint32_t *write_msk = ct3d->cxl_cstate.crb.cache_mem_regs_write_mask;
+
+ cxl_component_register_init_common(reg_state, write_msk, CXL2_TYPE3_DEVICE);
+ cxl_device_register_init_common(&ct3d->cxl_dstate);
+}
+
+static Property ct3_props[] = {
+ DEFINE_PROP_LINK("memdev", CXLType3Dev, hostmem, TYPE_MEMORY_BACKEND,
+ HostMemoryBackend *),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void ct3_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+ PCIDeviceClass *pc = PCI_DEVICE_CLASS(oc);
+
+ pc->realize = ct3_realize;
+ pc->class_id = PCI_CLASS_STORAGE_EXPRESS;
+ pc->vendor_id = PCI_VENDOR_ID_INTEL;
+ pc->device_id = 0xd93; /* LVF for now */
+ pc->revision = 1;
+
+ set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
+ dc->desc = "CXL PMEM Device (Type 3)";
+ dc->reset = ct3d_reset;
+ device_class_set_props(dc, ct3_props);
+}
+
+static const TypeInfo ct3d_info = {
+ .name = TYPE_CXL_TYPE3,
+ .parent = TYPE_PCI_DEVICE,
+ .class_init = ct3_class_init,
+ .instance_size = sizeof(CXLType3Dev),
+ .interfaces = (InterfaceInfo[]) {
+ { INTERFACE_CXL_DEVICE },
+ { INTERFACE_PCIE_DEVICE },
+ {}
+ },
+};
+
+static void ct3d_registers(void)
+{
+ type_register_static(&ct3d_info);
+}
+
+type_init(ct3d_registers);
diff --git a/hw/mem/meson.build b/hw/mem/meson.build
index 82f86d117e..609b2b36fc 100644
--- a/hw/mem/meson.build
+++ b/hw/mem/meson.build
@@ -3,6 +3,7 @@ mem_ss.add(files('memory-device.c'))
mem_ss.add(when: 'CONFIG_DIMM', if_true: files('pc-dimm.c'))
mem_ss.add(when: 'CONFIG_NPCM7XX', if_true: files('npcm7xx_mc.c'))
mem_ss.add(when: 'CONFIG_NVDIMM', if_true: files('nvdimm.c'))
+mem_ss.add(when: 'CONFIG_CXL_MEM_DEVICE', if_true: files('cxl_type3.c'))
softmmu_ss.add_all(when: 'CONFIG_MEM_DEVICE', if_true: mem_ss)
diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
index 797a22ddb4..d8da2c7b68 100644
--- a/include/hw/cxl/cxl_device.h
+++ b/include/hw/cxl/cxl_device.h
@@ -230,4 +230,19 @@ REG64(CXL_MEM_DEV_STS, 0)
FIELD(CXL_MEM_DEV_STS, MBOX_READY, 4, 1)
FIELD(CXL_MEM_DEV_STS, RESET_NEEDED, 5, 3)
+struct CXLType3Dev {
+ /* Private */
+ PCIDevice parent_obj;
+
+ /* Properties */
+ HostMemoryBackend *hostmem;
+
+ /* State */
+ CXLComponentState cxl_cstate;
+ CXLDeviceState cxl_dstate;
+};
+
+#define TYPE_CXL_TYPE3 "cxl-type3"
+OBJECT_DECLARE_SIMPLE_TYPE(CXLType3Dev, CXL_TYPE3)
+
#endif
diff --git a/include/hw/cxl/cxl_pci.h b/include/hw/cxl/cxl_pci.h
index 3f7e44daac..01cf002096 100644
--- a/include/hw/cxl/cxl_pci.h
+++ b/include/hw/cxl/cxl_pci.h
@@ -67,6 +67,27 @@ QEMU_BUILD_BUG_ON(sizeof(DVSECHeader) != 10);
* CXL 2.0 Downstream Port: 3, 4, 7, 8
*/
+/* CXL 2.0 - 8.1.3 (ID 0001) */
+typedef struct CXLDVSECDevice {
+ DVSECHeader hdr;
+ uint16_t cap;
+ uint16_t ctrl;
+ uint16_t status;
+ uint16_t ctrl2;
+ uint16_t status2;
+ uint16_t lock;
+ uint16_t cap2;
+ uint32_t range1_size_hi;
+ uint32_t range1_size_lo;
+ uint32_t range1_base_hi;
+ uint32_t range1_base_lo;
+ uint32_t range2_size_hi;
+ uint32_t range2_size_lo;
+ uint32_t range2_base_hi;
+ uint32_t range2_base_lo;
+} CXLDVSECDevice;
+QEMU_BUILD_BUG_ON(sizeof(CXLDVSECDevice) != 0x38);
+
/* CXL 2.0 - 8.1.5 (ID 0003) */
typedef struct CXLDVSECPortExtensions {
DVSECHeader hdr;
diff --git a/include/hw/pci/pci_ids.h b/include/hw/pci/pci_ids.h
index 11abe22d46..898083b86f 100644
--- a/include/hw/pci/pci_ids.h
+++ b/include/hw/pci/pci_ids.h
@@ -53,6 +53,7 @@
#define PCI_BASE_CLASS_MEMORY 0x05
#define PCI_CLASS_MEMORY_RAM 0x0500
#define PCI_CLASS_MEMORY_FLASH 0x0501
+#define PCI_CLASS_MEMORY_CXL 0x0502
#define PCI_CLASS_MEMORY_OTHER 0x0580
#define PCI_BASE_CLASS_BRIDGE 0x06
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-26 02:32:56 +0000