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qemu / qemu / 8187f63c9c64c2f2322fc6730c478a57bc0ce9eb / . / hw / mem / cxl_type3.c
blob: abe60b362c25b8189afdfe393ee391bc6c38321f [file] [log] [blame]
#include "qemu/osdep.h"
#include "qemu/units.h"
#include "qemu/error-report.h"
#include "qapi/qapi-commands-cxl.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/pmem.h"
#include "qemu/range.h"
#include "qemu/rcu.h"
#include "sysemu/hostmem.h"
#include "sysemu/numa.h"
#include "hw/cxl/cxl.h"
#include "hw/pci/msix.h"
#define DWORD_BYTE 4
/* Default CDAT entries for a memory region */
enum {
CT3_CDAT_DSMAS,
CT3_CDAT_DSLBIS0,
CT3_CDAT_DSLBIS1,
CT3_CDAT_DSLBIS2,
CT3_CDAT_DSLBIS3,
CT3_CDAT_DSEMTS,
CT3_CDAT_NUM_ENTRIES
};
static int ct3_build_cdat_entries_for_mr(CDATSubHeader **cdat_table,
int dsmad_handle, MemoryRegion *mr)
{
g_autofree CDATDsmas *dsmas = NULL;
g_autofree CDATDslbis *dslbis0 = NULL;
g_autofree CDATDslbis *dslbis1 = NULL;
g_autofree CDATDslbis *dslbis2 = NULL;
g_autofree CDATDslbis *dslbis3 = NULL;
g_autofree CDATDsemts *dsemts = NULL;
dsmas = g_malloc(sizeof(*dsmas));
if (!dsmas) {
return -ENOMEM;
}
*dsmas = (CDATDsmas) {
.header = {
.type = CDAT_TYPE_DSMAS,
.length = sizeof(*dsmas),
},
.DSMADhandle = dsmad_handle,
.flags = CDAT_DSMAS_FLAG_NV,
.DPA_base = 0,
.DPA_length = int128_get64(mr->size),
};
/* For now, no memory side cache, plausiblish numbers */
dslbis0 = g_malloc(sizeof(*dslbis0));
if (!dslbis0) {
return -ENOMEM;
}
*dslbis0 = (CDATDslbis) {
.header = {
.type = CDAT_TYPE_DSLBIS,
.length = sizeof(*dslbis0),
},
.handle = dsmad_handle,
.flags = HMAT_LB_MEM_MEMORY,
.data_type = HMAT_LB_DATA_READ_LATENCY,
.entry_base_unit = 10000, /* 10ns base */
.entry[0] = 15, /* 150ns */
};
dslbis1 = g_malloc(sizeof(*dslbis1));
if (!dslbis1) {
return -ENOMEM;
}
*dslbis1 = (CDATDslbis) {
.header = {
.type = CDAT_TYPE_DSLBIS,
.length = sizeof(*dslbis1),
},
.handle = dsmad_handle,
.flags = HMAT_LB_MEM_MEMORY,
.data_type = HMAT_LB_DATA_WRITE_LATENCY,
.entry_base_unit = 10000,
.entry[0] = 25, /* 250ns */
};
dslbis2 = g_malloc(sizeof(*dslbis2));
if (!dslbis2) {
return -ENOMEM;
}
*dslbis2 = (CDATDslbis) {
.header = {
.type = CDAT_TYPE_DSLBIS,
.length = sizeof(*dslbis2),
},
.handle = dsmad_handle,
.flags = HMAT_LB_MEM_MEMORY,
.data_type = HMAT_LB_DATA_READ_BANDWIDTH,
.entry_base_unit = 1000, /* GB/s */
.entry[0] = 16,
};
dslbis3 = g_malloc(sizeof(*dslbis3));
if (!dslbis3) {
return -ENOMEM;
}
*dslbis3 = (CDATDslbis) {
.header = {
.type = CDAT_TYPE_DSLBIS,
.length = sizeof(*dslbis3),
},
.handle = dsmad_handle,
.flags = HMAT_LB_MEM_MEMORY,
.data_type = HMAT_LB_DATA_WRITE_BANDWIDTH,
.entry_base_unit = 1000, /* GB/s */
.entry[0] = 16,
};
dsemts = g_malloc(sizeof(*dsemts));
if (!dsemts) {
return -ENOMEM;
}
*dsemts = (CDATDsemts) {
.header = {
.type = CDAT_TYPE_DSEMTS,
.length = sizeof(*dsemts),
},
.DSMAS_handle = dsmad_handle,
/* Reserved - the non volatile from DSMAS matters */
.EFI_memory_type_attr = 2,
.DPA_offset = 0,
.DPA_length = int128_get64(mr->size),
};
/* Header always at start of structure */
cdat_table[CT3_CDAT_DSMAS] = g_steal_pointer(&dsmas);
cdat_table[CT3_CDAT_DSLBIS0] = g_steal_pointer(&dslbis0);
cdat_table[CT3_CDAT_DSLBIS1] = g_steal_pointer(&dslbis1);
cdat_table[CT3_CDAT_DSLBIS2] = g_steal_pointer(&dslbis2);
cdat_table[CT3_CDAT_DSLBIS3] = g_steal_pointer(&dslbis3);
cdat_table[CT3_CDAT_DSEMTS] = g_steal_pointer(&dsemts);
return 0;
}
static int ct3_build_cdat_table(CDATSubHeader ***cdat_table, void *priv)
{
g_autofree CDATSubHeader **table = NULL;
MemoryRegion *nonvolatile_mr;
CXLType3Dev *ct3d = priv;
int dsmad_handle = 0;
int rc;
if (!ct3d->hostmem) {
return 0;
}
nonvolatile_mr = host_memory_backend_get_memory(ct3d->hostmem);
if (!nonvolatile_mr) {
return -EINVAL;
}
table = g_malloc0(CT3_CDAT_NUM_ENTRIES * sizeof(*table));
if (!table) {
return -ENOMEM;
}
rc = ct3_build_cdat_entries_for_mr(table, dsmad_handle++, nonvolatile_mr);
if (rc < 0) {
return rc;
}
*cdat_table = g_steal_pointer(&table);
return CT3_CDAT_NUM_ENTRIES;
}
static void ct3_free_cdat_table(CDATSubHeader **cdat_table, int num, void *priv)
{
int i;
for (i = 0; i < num; i++) {
g_free(cdat_table[i]);
}
g_free(cdat_table);
}
static bool cxl_doe_cdat_rsp(DOECap *doe_cap)
{
CDATObject *cdat = &CXL_TYPE3(doe_cap->pdev)->cxl_cstate.cdat;
uint16_t ent;
void *base;
uint32_t len;
CDATReq *req = pcie_doe_get_write_mbox_ptr(doe_cap);
CDATRsp rsp;
assert(cdat->entry_len);
/* Discard if request length mismatched */
if (pcie_doe_get_obj_len(req) <
DIV_ROUND_UP(sizeof(CDATReq), DWORD_BYTE)) {
return false;
}
ent = req->entry_handle;
base = cdat->entry[ent].base;
len = cdat->entry[ent].length;
rsp = (CDATRsp) {
.header = {
.vendor_id = CXL_VENDOR_ID,
.data_obj_type = CXL_DOE_TABLE_ACCESS,
.reserved = 0x0,
.length = DIV_ROUND_UP((sizeof(rsp) + len), DWORD_BYTE),
},
.rsp_code = CXL_DOE_TAB_RSP,
.table_type = CXL_DOE_TAB_TYPE_CDAT,
.entry_handle = (ent < cdat->entry_len - 1) ?
ent + 1 : CXL_DOE_TAB_ENT_MAX,
};
memcpy(doe_cap->read_mbox, &rsp, sizeof(rsp));
memcpy(doe_cap->read_mbox + DIV_ROUND_UP(sizeof(rsp), DWORD_BYTE),
base, len);
doe_cap->read_mbox_len += rsp.header.length;
return true;
}
static uint32_t ct3d_config_read(PCIDevice *pci_dev, uint32_t addr, int size)
{
CXLType3Dev *ct3d = CXL_TYPE3(pci_dev);
uint32_t val;
if (pcie_doe_read_config(&ct3d->doe_cdat, addr, size, &val)) {
return val;
}
return pci_default_read_config(pci_dev, addr, size);
}
static void ct3d_config_write(PCIDevice *pci_dev, uint32_t addr, uint32_t val,
int size)
{
CXLType3Dev *ct3d = CXL_TYPE3(pci_dev);
pcie_doe_write_config(&ct3d->doe_cdat, addr, val, size);
pci_default_write_config(pci_dev, addr, val, size);
pcie_aer_write_config(pci_dev, addr, val, size);
}
/*
* Null value of all Fs suggested by IEEE RA guidelines for use of
* EU, OUI and CID
*/
#define UI64_NULL ~(0ULL)
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_DEVICE_DVSEC,
GPF_DEVICE_DVSEC_REVID, dvsec);
dvsec = (uint8_t *)&(CXLDVSECPortFlexBus){
.cap = 0x26, /* 68B, IO, Mem, non-MLD */
.ctrl = 0x02, /* IO always enabled */
.status = 0x26, /* same as capabilities */
.rcvd_mod_ts_data_phase1 = 0xef, /* WTF? */
};
cxl_component_create_dvsec(cxl_cstate, CXL2_TYPE3_DEVICE,
PCIE_FLEXBUS_PORT_DVSEC_LENGTH_2_0,
PCIE_FLEXBUS_PORT_DVSEC,
PCIE_FLEXBUS_PORT_DVSEC_REVID_2_0, dvsec);
}
static void hdm_decoder_commit(CXLType3Dev *ct3d, int which)
{
ComponentRegisters *cregs = &ct3d->cxl_cstate.crb;
uint32_t *cache_mem = cregs->cache_mem_registers;
assert(which == 0);
/* TODO: Sanity checks that the decoder is possible */
ARRAY_FIELD_DP32(cache_mem, CXL_HDM_DECODER0_CTRL, COMMIT, 0);
ARRAY_FIELD_DP32(cache_mem, CXL_HDM_DECODER0_CTRL, ERR, 0);
ARRAY_FIELD_DP32(cache_mem, CXL_HDM_DECODER0_CTRL, COMMITTED, 1);
}
static int ct3d_qmp_uncor_err_to_cxl(CxlUncorErrorType qmp_err)
{
switch (qmp_err) {
case CXL_UNCOR_ERROR_TYPE_CACHE_DATA_PARITY:
return CXL_RAS_UNC_ERR_CACHE_DATA_PARITY;
case CXL_UNCOR_ERROR_TYPE_CACHE_ADDRESS_PARITY:
return CXL_RAS_UNC_ERR_CACHE_ADDRESS_PARITY;
case CXL_UNCOR_ERROR_TYPE_CACHE_BE_PARITY:
return CXL_RAS_UNC_ERR_CACHE_BE_PARITY;
case CXL_UNCOR_ERROR_TYPE_CACHE_DATA_ECC:
return CXL_RAS_UNC_ERR_CACHE_DATA_ECC;
case CXL_UNCOR_ERROR_TYPE_MEM_DATA_PARITY:
return CXL_RAS_UNC_ERR_MEM_DATA_PARITY;
case CXL_UNCOR_ERROR_TYPE_MEM_ADDRESS_PARITY:
return CXL_RAS_UNC_ERR_MEM_ADDRESS_PARITY;
case CXL_UNCOR_ERROR_TYPE_MEM_BE_PARITY:
return CXL_RAS_UNC_ERR_MEM_BE_PARITY;
case CXL_UNCOR_ERROR_TYPE_MEM_DATA_ECC:
return CXL_RAS_UNC_ERR_MEM_DATA_ECC;
case CXL_UNCOR_ERROR_TYPE_REINIT_THRESHOLD:
return CXL_RAS_UNC_ERR_REINIT_THRESHOLD;
case CXL_UNCOR_ERROR_TYPE_RSVD_ENCODING:
return CXL_RAS_UNC_ERR_RSVD_ENCODING;
case CXL_UNCOR_ERROR_TYPE_POISON_RECEIVED:
return CXL_RAS_UNC_ERR_POISON_RECEIVED;
case CXL_UNCOR_ERROR_TYPE_RECEIVER_OVERFLOW:
return CXL_RAS_UNC_ERR_RECEIVER_OVERFLOW;
case CXL_UNCOR_ERROR_TYPE_INTERNAL:
return CXL_RAS_UNC_ERR_INTERNAL;
case CXL_UNCOR_ERROR_TYPE_CXL_IDE_TX:
return CXL_RAS_UNC_ERR_CXL_IDE_TX;
case CXL_UNCOR_ERROR_TYPE_CXL_IDE_RX:
return CXL_RAS_UNC_ERR_CXL_IDE_RX;
default:
return -EINVAL;
}
}
static int ct3d_qmp_cor_err_to_cxl(CxlCorErrorType qmp_err)
{
switch (qmp_err) {
case CXL_COR_ERROR_TYPE_CACHE_DATA_ECC:
return CXL_RAS_COR_ERR_CACHE_DATA_ECC;
case CXL_COR_ERROR_TYPE_MEM_DATA_ECC:
return CXL_RAS_COR_ERR_MEM_DATA_ECC;
case CXL_COR_ERROR_TYPE_CRC_THRESHOLD:
return CXL_RAS_COR_ERR_CRC_THRESHOLD;
case CXL_COR_ERROR_TYPE_RETRY_THRESHOLD:
return CXL_RAS_COR_ERR_RETRY_THRESHOLD;
case CXL_COR_ERROR_TYPE_CACHE_POISON_RECEIVED:
return CXL_RAS_COR_ERR_CACHE_POISON_RECEIVED;
case CXL_COR_ERROR_TYPE_MEM_POISON_RECEIVED:
return CXL_RAS_COR_ERR_MEM_POISON_RECEIVED;
case CXL_COR_ERROR_TYPE_PHYSICAL:
return CXL_RAS_COR_ERR_PHYSICAL;
default:
return -EINVAL;
}
}
static void ct3d_reg_write(void *opaque, hwaddr offset, uint64_t value,
unsigned size)
{
CXLComponentState *cxl_cstate = opaque;
ComponentRegisters *cregs = &cxl_cstate->crb;
CXLType3Dev *ct3d = container_of(cxl_cstate, CXLType3Dev, cxl_cstate);
uint32_t *cache_mem = cregs->cache_mem_registers;
bool should_commit = false;
int which_hdm = -1;
assert(size == 4);
g_assert(offset < CXL2_COMPONENT_CM_REGION_SIZE);
switch (offset) {
case A_CXL_HDM_DECODER0_CTRL:
should_commit = FIELD_EX32(value, CXL_HDM_DECODER0_CTRL, COMMIT);
which_hdm = 0;
break;
case A_CXL_RAS_UNC_ERR_STATUS:
{
uint32_t capctrl = ldl_le_p(cache_mem + R_CXL_RAS_ERR_CAP_CTRL);
uint32_t fe = FIELD_EX32(capctrl, CXL_RAS_ERR_CAP_CTRL, FIRST_ERROR_POINTER);
CXLError *cxl_err;
uint32_t unc_err;
/*
* If single bit written that corresponds to the first error
* pointer being cleared, update the status and header log.
*/
if (!QTAILQ_EMPTY(&ct3d->error_list)) {
if ((1 << fe) ^ value) {
CXLError *cxl_next;
/*
* Software is using wrong flow for multiple header recording
* Following behavior in PCIe r6.0 and assuming multiple
* header support. Implementation defined choice to clear all
* matching records if more than one bit set - which corresponds
* closest to behavior of hardware not capable of multiple
* header recording.
*/
QTAILQ_FOREACH_SAFE(cxl_err, &ct3d->error_list, node, cxl_next) {
if ((1 << cxl_err->type) & value) {
QTAILQ_REMOVE(&ct3d->error_list, cxl_err, node);
g_free(cxl_err);
}
}
} else {
/* Done with previous FE, so drop from list */
cxl_err = QTAILQ_FIRST(&ct3d->error_list);
QTAILQ_REMOVE(&ct3d->error_list, cxl_err, node);
g_free(cxl_err);
}
/*
* If there is another FE, then put that in place and update
* the header log
*/
if (!QTAILQ_EMPTY(&ct3d->error_list)) {
uint32_t *header_log = &cache_mem[R_CXL_RAS_ERR_HEADER0];
int i;
cxl_err = QTAILQ_FIRST(&ct3d->error_list);
for (i = 0; i < CXL_RAS_ERR_HEADER_NUM; i++) {
stl_le_p(header_log + i, cxl_err->header[i]);
}
capctrl = FIELD_DP32(capctrl, CXL_RAS_ERR_CAP_CTRL,
FIRST_ERROR_POINTER, cxl_err->type);
} else {
/*
* If no more errors, then follow recomendation of PCI spec
* r6.0 6.2.4.2 to set the first error pointer to a status
* bit that will never be used.
*/
capctrl = FIELD_DP32(capctrl, CXL_RAS_ERR_CAP_CTRL,
FIRST_ERROR_POINTER,
CXL_RAS_UNC_ERR_CXL_UNUSED);
}
stl_le_p((uint8_t *)cache_mem + A_CXL_RAS_ERR_CAP_CTRL, capctrl);
}
unc_err = 0;
QTAILQ_FOREACH(cxl_err, &ct3d->error_list, node) {
unc_err |= 1 << cxl_err->type;
}
stl_le_p((uint8_t *)cache_mem + offset, unc_err);
return;
}
case A_CXL_RAS_COR_ERR_STATUS:
{
uint32_t rw1c = value;
uint32_t temp = ldl_le_p((uint8_t *)cache_mem + offset);
temp &= ~rw1c;
stl_le_p((uint8_t *)cache_mem + offset, temp);
return;
}
default:
break;
}
stl_le_p((uint8_t *)cache_mem + offset, value);
if (should_commit) {
hdm_decoder_commit(ct3d, which_hdm);
}
}
static bool cxl_setup_memory(CXLType3Dev *ct3d, Error **errp)
{
DeviceState *ds = DEVICE(ct3d);
MemoryRegion *mr;
char *name;
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);
if (ds->id) {
name = g_strdup_printf("cxl-type3-dpa-space:%s", ds->id);
} else {
name = g_strdup("cxl-type3-dpa-space");
}
address_space_init(&ct3d->hostmem_as, mr, name);
g_free(name);
ct3d->cxl_dstate.pmem_size = ct3d->hostmem->size;
if (!ct3d->lsa) {
error_setg(errp, "lsa property must be set");
return false;
}
return true;
}
static DOEProtocol doe_cdat_prot[] = {
{ CXL_VENDOR_ID, CXL_DOE_TABLE_ACCESS, cxl_doe_cdat_rsp },
{ }
};
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;
unsigned short msix_num = 1;
int i, rc;
QTAILQ_INIT(&ct3d->error_list);
if (!cxl_setup_memory(ct3d, errp)) {
return;
}
pci_config_set_prog_interface(pci_conf, 0x10);
pcie_endpoint_cap_init(pci_dev, 0x80);
if (ct3d->sn != UI64_NULL) {
pcie_dev_ser_num_init(pci_dev, 0x100, ct3d->sn);
cxl_cstate->dvsec_offset = 0x100 + 0x0c;
} else {
cxl_cstate->dvsec_offset = 0x100;
}
ct3d->cxl_cstate.pdev = pci_dev;
build_dvsecs(ct3d);
regs->special_ops = g_new0(MemoryRegionOps, 1);
regs->special_ops->write = ct3d_reg_write;
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);
/* MSI(-X) Initailization */
rc = msix_init_exclusive_bar(pci_dev, msix_num, 4, NULL);
if (rc) {
goto err_address_space_free;
}
for (i = 0; i < msix_num; i++) {
msix_vector_use(pci_dev, i);
}
/* DOE Initailization */
pcie_doe_init(pci_dev, &ct3d->doe_cdat, 0x190, doe_cdat_prot, true, 0);
cxl_cstate->cdat.build_cdat_table = ct3_build_cdat_table;
cxl_cstate->cdat.free_cdat_table = ct3_free_cdat_table;
cxl_cstate->cdat.private = ct3d;
cxl_doe_cdat_init(cxl_cstate, errp);
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);
if (rc) {
goto err_release_cdat;
}
return;
err_release_cdat:
cxl_doe_cdat_release(cxl_cstate);
g_free(regs->special_ops);
err_address_space_free:
address_space_destroy(&ct3d->hostmem_as);
return;
}
static void ct3_exit(PCIDevice *pci_dev)
{
CXLType3Dev *ct3d = CXL_TYPE3(pci_dev);
CXLComponentState *cxl_cstate = &ct3d->cxl_cstate;
ComponentRegisters *regs = &cxl_cstate->crb;
pcie_aer_exit(pci_dev);
cxl_doe_cdat_release(cxl_cstate);
g_free(regs->special_ops);
address_space_destroy(&ct3d->hostmem_as);
}
/* TODO: Support multiple HDM decoders and DPA skip */
static bool cxl_type3_dpa(CXLType3Dev *ct3d, hwaddr host_addr, uint64_t *dpa)
{
uint32_t *cache_mem = ct3d->cxl_cstate.crb.cache_mem_registers;
uint64_t decoder_base, decoder_size, hpa_offset;
uint32_t hdm0_ctrl;
int ig, iw;
decoder_base = (((uint64_t)cache_mem[R_CXL_HDM_DECODER0_BASE_HI] << 32) |
cache_mem[R_CXL_HDM_DECODER0_BASE_LO]);
if ((uint64_t)host_addr < decoder_base) {
return false;
}
hpa_offset = (uint64_t)host_addr - decoder_base;
decoder_size = ((uint64_t)cache_mem[R_CXL_HDM_DECODER0_SIZE_HI] << 32) |
cache_mem[R_CXL_HDM_DECODER0_SIZE_LO];
if (hpa_offset >= decoder_size) {
return false;
}
hdm0_ctrl = cache_mem[R_CXL_HDM_DECODER0_CTRL];
iw = FIELD_EX32(hdm0_ctrl, CXL_HDM_DECODER0_CTRL, IW);
ig = FIELD_EX32(hdm0_ctrl, CXL_HDM_DECODER0_CTRL, IG);
*dpa = (MAKE_64BIT_MASK(0, 8 + ig) & hpa_offset) |
((MAKE_64BIT_MASK(8 + ig + iw, 64 - 8 - ig - iw) & hpa_offset) >> iw);
return true;
}
MemTxResult cxl_type3_read(PCIDevice *d, hwaddr host_addr, uint64_t *data,
unsigned size, MemTxAttrs attrs)
{
CXLType3Dev *ct3d = CXL_TYPE3(d);
uint64_t dpa_offset;
MemoryRegion *mr;
/* TODO support volatile region */
mr = host_memory_backend_get_memory(ct3d->hostmem);
if (!mr) {
return MEMTX_ERROR;
}
if (!cxl_type3_dpa(ct3d, host_addr, &dpa_offset)) {
return MEMTX_ERROR;
}
if (dpa_offset > int128_get64(mr->size)) {
return MEMTX_ERROR;
}
return address_space_read(&ct3d->hostmem_as, dpa_offset, attrs, data, size);
}
MemTxResult cxl_type3_write(PCIDevice *d, hwaddr host_addr, uint64_t data,
unsigned size, MemTxAttrs attrs)
{
CXLType3Dev *ct3d = CXL_TYPE3(d);
uint64_t dpa_offset;
MemoryRegion *mr;
mr = host_memory_backend_get_memory(ct3d->hostmem);
if (!mr) {
return MEMTX_OK;
}
if (!cxl_type3_dpa(ct3d, host_addr, &dpa_offset)) {
return MEMTX_OK;
}
if (dpa_offset > int128_get64(mr->size)) {
return MEMTX_OK;
}
return address_space_write(&ct3d->hostmem_as, dpa_offset, attrs,
&data, size);
}
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_LINK("lsa", CXLType3Dev, lsa, TYPE_MEMORY_BACKEND,
HostMemoryBackend *),
DEFINE_PROP_UINT64("sn", CXLType3Dev, sn, UI64_NULL),
DEFINE_PROP_STRING("cdat", CXLType3Dev, cxl_cstate.cdat.filename),
DEFINE_PROP_END_OF_LIST(),
};
static uint64_t get_lsa_size(CXLType3Dev *ct3d)
{
MemoryRegion *mr;
mr = host_memory_backend_get_memory(ct3d->lsa);
return memory_region_size(mr);
}
static void validate_lsa_access(MemoryRegion *mr, uint64_t size,
uint64_t offset)
{
assert(offset + size <= memory_region_size(mr));
assert(offset + size > offset);
}
static uint64_t get_lsa(CXLType3Dev *ct3d, void *buf, uint64_t size,
uint64_t offset)
{
MemoryRegion *mr;
void *lsa;
mr = host_memory_backend_get_memory(ct3d->lsa);
validate_lsa_access(mr, size, offset);
lsa = memory_region_get_ram_ptr(mr) + offset;
memcpy(buf, lsa, size);
return size;
}
static void set_lsa(CXLType3Dev *ct3d, const void *buf, uint64_t size,
uint64_t offset)
{
MemoryRegion *mr;
void *lsa;
mr = host_memory_backend_get_memory(ct3d->lsa);
validate_lsa_access(mr, size, offset);
lsa = memory_region_get_ram_ptr(mr) + offset;
memcpy(lsa, buf, size);
memory_region_set_dirty(mr, offset, size);
/*
* Just like the PMEM, if the guest is not allowed to exit gracefully, label
* updates will get lost.
*/
}
/* For uncorrectable errors include support for multiple header recording */
void qmp_cxl_inject_uncorrectable_errors(const char *path,
CXLUncorErrorRecordList *errors,
Error **errp)
{
Object *obj = object_resolve_path(path, NULL);
static PCIEAERErr err = {};
CXLType3Dev *ct3d;
CXLError *cxl_err;
uint32_t *reg_state;
uint32_t unc_err;
bool first;
if (!obj) {
error_setg(errp, "Unable to resolve path");
return;
}
if (!object_dynamic_cast(obj, TYPE_CXL_TYPE3)) {
error_setg(errp, "Path does not point to a CXL type 3 device");
return;
}
err.status = PCI_ERR_UNC_INTN;
err.source_id = pci_requester_id(PCI_DEVICE(obj));
err.flags = 0;
ct3d = CXL_TYPE3(obj);
first = QTAILQ_EMPTY(&ct3d->error_list);
reg_state = ct3d->cxl_cstate.crb.cache_mem_registers;
while (errors) {
uint32List *header = errors->value->header;
uint8_t header_count = 0;
int cxl_err_code;
cxl_err_code = ct3d_qmp_uncor_err_to_cxl(errors->value->type);
if (cxl_err_code < 0) {
error_setg(errp, "Unknown error code");
return;
}
/* If the error is masked, nothing to do here */
if (!((1 << cxl_err_code) &
~ldl_le_p(reg_state + R_CXL_RAS_UNC_ERR_MASK))) {
errors = errors->next;
continue;
}
cxl_err = g_malloc0(sizeof(*cxl_err));
if (!cxl_err) {
return;
}
cxl_err->type = cxl_err_code;
while (header && header_count < 32) {
cxl_err->header[header_count++] = header->value;
header = header->next;
}
if (header_count > 32) {
error_setg(errp, "Header must be 32 DWORD or less");
return;
}
QTAILQ_INSERT_TAIL(&ct3d->error_list, cxl_err, node);
errors = errors->next;
}
if (first && !QTAILQ_EMPTY(&ct3d->error_list)) {
uint32_t *cache_mem = ct3d->cxl_cstate.crb.cache_mem_registers;
uint32_t capctrl = ldl_le_p(cache_mem + R_CXL_RAS_ERR_CAP_CTRL);
uint32_t *header_log = &cache_mem[R_CXL_RAS_ERR_HEADER0];
int i;
cxl_err = QTAILQ_FIRST(&ct3d->error_list);
for (i = 0; i < CXL_RAS_ERR_HEADER_NUM; i++) {
stl_le_p(header_log + i, cxl_err->header[i]);
}
capctrl = FIELD_DP32(capctrl, CXL_RAS_ERR_CAP_CTRL,
FIRST_ERROR_POINTER, cxl_err->type);
stl_le_p(cache_mem + R_CXL_RAS_ERR_CAP_CTRL, capctrl);
}
unc_err = 0;
QTAILQ_FOREACH(cxl_err, &ct3d->error_list, node) {
unc_err |= (1 << cxl_err->type);
}
if (!unc_err) {
return;
}
stl_le_p(reg_state + R_CXL_RAS_UNC_ERR_STATUS, unc_err);
pcie_aer_inject_error(PCI_DEVICE(obj), &err);
return;
}
void qmp_cxl_inject_correctable_error(const char *path, CxlCorErrorType type,
Error **errp)
{
static PCIEAERErr err = {};
Object *obj = object_resolve_path(path, NULL);
CXLType3Dev *ct3d;
uint32_t *reg_state;
uint32_t cor_err;
int cxl_err_type;
if (!obj) {
error_setg(errp, "Unable to resolve path");
return;
}
if (!object_dynamic_cast(obj, TYPE_CXL_TYPE3)) {
error_setg(errp, "Path does not point to a CXL type 3 device");
return;
}
err.status = PCI_ERR_COR_INTERNAL;
err.source_id = pci_requester_id(PCI_DEVICE(obj));
err.flags = PCIE_AER_ERR_IS_CORRECTABLE;
ct3d = CXL_TYPE3(obj);
reg_state = ct3d->cxl_cstate.crb.cache_mem_registers;
cor_err = ldl_le_p(reg_state + R_CXL_RAS_COR_ERR_STATUS);
cxl_err_type = ct3d_qmp_cor_err_to_cxl(type);
if (cxl_err_type < 0) {
error_setg(errp, "Invalid COR error");
return;
}
/* If the error is masked, nothting to do here */
if (!((1 << cxl_err_type) & ~ldl_le_p(reg_state + R_CXL_RAS_COR_ERR_MASK))) {
return;
}
cor_err |= (1 << cxl_err_type);
stl_le_p(reg_state + R_CXL_RAS_COR_ERR_STATUS, cor_err);
pcie_aer_inject_error(PCI_DEVICE(obj), &err);
}
static void ct3_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
PCIDeviceClass *pc = PCI_DEVICE_CLASS(oc);
CXLType3Class *cvc = CXL_TYPE3_CLASS(oc);
pc->realize = ct3_realize;
pc->exit = ct3_exit;
pc->class_id = PCI_CLASS_MEMORY_CXL;
pc->vendor_id = PCI_VENDOR_ID_INTEL;
pc->device_id = 0xd93; /* LVF for now */
pc->revision = 1;
pc->config_write = ct3d_config_write;
pc->config_read = ct3d_config_read;
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);
cvc->get_lsa_size = get_lsa_size;
cvc->get_lsa = get_lsa;
cvc->set_lsa = set_lsa;
}
static const TypeInfo ct3d_info = {
.name = TYPE_CXL_TYPE3,
.parent = TYPE_PCI_DEVICE,
.class_size = sizeof(struct CXLType3Class),
.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);