e0ddabc6d4
As error.h suggested, the best practice for callee is to return something to indicate success / failure. With returned boolean, there's no need to dereference @errp to check failure case. Suggested-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Zhao Liu <zhao1.liu@intel.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Message-ID: <20240418100433.1085447-4-zhao1.liu@linux.intel.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
281 lines
12 KiB
C
281 lines
12 KiB
C
/*
|
|
* QEMU CXL Component
|
|
*
|
|
* Copyright (c) 2020 Intel
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2. See the
|
|
* COPYING file in the top-level directory.
|
|
*/
|
|
|
|
#ifndef CXL_COMPONENT_H
|
|
#define CXL_COMPONENT_H
|
|
|
|
/* CXL r3.1 Section 8.2.4: CXL.cache and CXL.mem Registers */
|
|
#define CXL2_COMPONENT_IO_REGION_SIZE 0x1000
|
|
#define CXL2_COMPONENT_CM_REGION_SIZE 0x1000
|
|
#define CXL2_COMPONENT_BLOCK_SIZE 0x10000
|
|
|
|
#include "qemu/range.h"
|
|
#include "hw/cxl/cxl_cdat.h"
|
|
#include "hw/register.h"
|
|
#include "qapi/error.h"
|
|
|
|
enum reg_type {
|
|
CXL2_DEVICE,
|
|
CXL2_TYPE3_DEVICE,
|
|
CXL2_LOGICAL_DEVICE,
|
|
CXL2_ROOT_PORT,
|
|
CXL2_RC,
|
|
CXL2_UPSTREAM_PORT,
|
|
CXL2_DOWNSTREAM_PORT,
|
|
CXL3_SWITCH_MAILBOX_CCI,
|
|
};
|
|
|
|
/*
|
|
* Capability registers are defined at the top of the CXL.cache/mem region and
|
|
* are packed. For our purposes we will always define the caps in the same
|
|
* order.
|
|
* CXL r3.1 Table 8-22: CXL_CAPABILITY_ID Assignment for details.
|
|
*/
|
|
|
|
/* CXL r3.1 Section 8.2.4.1: CXL Capability Header Register */
|
|
#define CXL_CAPABILITY_VERSION 1
|
|
REG32(CXL_CAPABILITY_HEADER, 0)
|
|
FIELD(CXL_CAPABILITY_HEADER, ID, 0, 16)
|
|
FIELD(CXL_CAPABILITY_HEADER, VERSION, 16, 4)
|
|
FIELD(CXL_CAPABILITY_HEADER, CACHE_MEM_VERSION, 20, 4)
|
|
FIELD(CXL_CAPABILITY_HEADER, ARRAY_SIZE, 24, 8)
|
|
|
|
#define CXLx_CAPABILITY_HEADER(type, offset) \
|
|
REG32(CXL_##type##_CAPABILITY_HEADER, offset) \
|
|
FIELD(CXL_##type##_CAPABILITY_HEADER, ID, 0, 16) \
|
|
FIELD(CXL_##type##_CAPABILITY_HEADER, VERSION, 16, 4) \
|
|
FIELD(CXL_##type##_CAPABILITY_HEADER, PTR, 20, 12)
|
|
CXLx_CAPABILITY_HEADER(RAS, 0x4)
|
|
CXLx_CAPABILITY_HEADER(LINK, 0x8)
|
|
CXLx_CAPABILITY_HEADER(HDM, 0xc)
|
|
CXLx_CAPABILITY_HEADER(EXTSEC, 0x10)
|
|
CXLx_CAPABILITY_HEADER(SNOOP, 0x14)
|
|
|
|
/*
|
|
* Capability structures contain the actual registers that the CXL component
|
|
* implements. Some of these are specific to certain types of components, but
|
|
* this implementation leaves enough space regardless.
|
|
*/
|
|
|
|
/* CXL r3.1 Section 8.2.4.17: CXL RAS Capability Structure */
|
|
#define CXL_RAS_CAPABILITY_VERSION 3
|
|
/* Give ample space for caps before this */
|
|
#define CXL_RAS_REGISTERS_OFFSET 0x80
|
|
#define CXL_RAS_REGISTERS_SIZE 0x58
|
|
REG32(CXL_RAS_UNC_ERR_STATUS, CXL_RAS_REGISTERS_OFFSET)
|
|
#define CXL_RAS_UNC_ERR_CACHE_DATA_PARITY 0
|
|
#define CXL_RAS_UNC_ERR_CACHE_ADDRESS_PARITY 1
|
|
#define CXL_RAS_UNC_ERR_CACHE_BE_PARITY 2
|
|
#define CXL_RAS_UNC_ERR_CACHE_DATA_ECC 3
|
|
#define CXL_RAS_UNC_ERR_MEM_DATA_PARITY 4
|
|
#define CXL_RAS_UNC_ERR_MEM_ADDRESS_PARITY 5
|
|
#define CXL_RAS_UNC_ERR_MEM_BE_PARITY 6
|
|
#define CXL_RAS_UNC_ERR_MEM_DATA_ECC 7
|
|
#define CXL_RAS_UNC_ERR_REINIT_THRESHOLD 8
|
|
#define CXL_RAS_UNC_ERR_RSVD_ENCODING 9
|
|
#define CXL_RAS_UNC_ERR_POISON_RECEIVED 10
|
|
#define CXL_RAS_UNC_ERR_RECEIVER_OVERFLOW 11
|
|
#define CXL_RAS_UNC_ERR_INTERNAL 14
|
|
#define CXL_RAS_UNC_ERR_CXL_IDE_TX 15
|
|
#define CXL_RAS_UNC_ERR_CXL_IDE_RX 16
|
|
#define CXL_RAS_UNC_ERR_CXL_UNUSED 63 /* Magic value */
|
|
REG32(CXL_RAS_UNC_ERR_MASK, CXL_RAS_REGISTERS_OFFSET + 0x4)
|
|
REG32(CXL_RAS_UNC_ERR_SEVERITY, CXL_RAS_REGISTERS_OFFSET + 0x8)
|
|
REG32(CXL_RAS_COR_ERR_STATUS, CXL_RAS_REGISTERS_OFFSET + 0xc)
|
|
#define CXL_RAS_COR_ERR_CACHE_DATA_ECC 0
|
|
#define CXL_RAS_COR_ERR_MEM_DATA_ECC 1
|
|
#define CXL_RAS_COR_ERR_CRC_THRESHOLD 2
|
|
#define CXL_RAS_COR_ERR_RETRY_THRESHOLD 3
|
|
#define CXL_RAS_COR_ERR_CACHE_POISON_RECEIVED 4
|
|
#define CXL_RAS_COR_ERR_MEM_POISON_RECEIVED 5
|
|
#define CXL_RAS_COR_ERR_PHYSICAL 6
|
|
REG32(CXL_RAS_COR_ERR_MASK, CXL_RAS_REGISTERS_OFFSET + 0x10)
|
|
REG32(CXL_RAS_ERR_CAP_CTRL, CXL_RAS_REGISTERS_OFFSET + 0x14)
|
|
FIELD(CXL_RAS_ERR_CAP_CTRL, FIRST_ERROR_POINTER, 0, 6)
|
|
FIELD(CXL_RAS_ERR_CAP_CTRL, MULTIPLE_HEADER_RECORDING_CAP, 9, 1)
|
|
FIELD(CXL_RAS_ERR_POISON_ENABLED, POISON_ENABLED, 13, 1)
|
|
REG32(CXL_RAS_ERR_HEADER0, CXL_RAS_REGISTERS_OFFSET + 0x18)
|
|
#define CXL_RAS_ERR_HEADER_NUM 32
|
|
/* Offset 0x18 - 0x58 reserved for RAS logs */
|
|
|
|
/* CXL r3.1 Section 8.2.4.18: CXL Security Capability Structure */
|
|
#define CXL_SEC_REGISTERS_OFFSET \
|
|
(CXL_RAS_REGISTERS_OFFSET + CXL_RAS_REGISTERS_SIZE)
|
|
#define CXL_SEC_REGISTERS_SIZE 0 /* We don't implement 1.1 downstream ports */
|
|
|
|
/* CXL r3.1 Section 8.2.4.19: CXL Link Capability Structure */
|
|
#define CXL_LINK_CAPABILITY_VERSION 2
|
|
#define CXL_LINK_REGISTERS_OFFSET \
|
|
(CXL_SEC_REGISTERS_OFFSET + CXL_SEC_REGISTERS_SIZE)
|
|
#define CXL_LINK_REGISTERS_SIZE 0x50
|
|
|
|
/* CXL r3.1 Section 8.2.4.20: CXL HDM Decoder Capability Structure */
|
|
#define HDM_DECODE_MAX 10 /* Maximum decoders for Devices */
|
|
#define CXL_HDM_CAPABILITY_VERSION 3
|
|
#define CXL_HDM_REGISTERS_OFFSET \
|
|
(CXL_LINK_REGISTERS_OFFSET + CXL_LINK_REGISTERS_SIZE)
|
|
#define CXL_HDM_REGISTERS_SIZE (0x10 + 0x20 * HDM_DECODE_MAX)
|
|
#define HDM_DECODER_INIT(n) \
|
|
REG32(CXL_HDM_DECODER##n##_BASE_LO, \
|
|
CXL_HDM_REGISTERS_OFFSET + (0x20 * n) + 0x10) \
|
|
FIELD(CXL_HDM_DECODER##n##_BASE_LO, L, 28, 4) \
|
|
REG32(CXL_HDM_DECODER##n##_BASE_HI, \
|
|
CXL_HDM_REGISTERS_OFFSET + (0x20 * n) + 0x14) \
|
|
REG32(CXL_HDM_DECODER##n##_SIZE_LO, \
|
|
CXL_HDM_REGISTERS_OFFSET + (0x20 * n) + 0x18) \
|
|
REG32(CXL_HDM_DECODER##n##_SIZE_HI, \
|
|
CXL_HDM_REGISTERS_OFFSET + (0x20 * n) + 0x1C) \
|
|
REG32(CXL_HDM_DECODER##n##_CTRL, \
|
|
CXL_HDM_REGISTERS_OFFSET + (0x20 * n) + 0x20) \
|
|
FIELD(CXL_HDM_DECODER##n##_CTRL, IG, 0, 4) \
|
|
FIELD(CXL_HDM_DECODER##n##_CTRL, IW, 4, 4) \
|
|
FIELD(CXL_HDM_DECODER##n##_CTRL, LOCK_ON_COMMIT, 8, 1) \
|
|
FIELD(CXL_HDM_DECODER##n##_CTRL, COMMIT, 9, 1) \
|
|
FIELD(CXL_HDM_DECODER##n##_CTRL, COMMITTED, 10, 1) \
|
|
FIELD(CXL_HDM_DECODER##n##_CTRL, ERR, 11, 1) \
|
|
FIELD(CXL_HDM_DECODER##n##_CTRL, TYPE, 12, 1) \
|
|
FIELD(CXL_HDM_DECODER##n##_CTRL, BI, 13, 1) \
|
|
FIELD(CXL_HDM_DECODER##n##_CTRL, UIO, 14, 1) \
|
|
FIELD(CXL_HDM_DECODER##n##_CTRL, UIG, 16, 4) \
|
|
FIELD(CXL_HDM_DECODER##n##_CTRL, UIW, 20, 4) \
|
|
FIELD(CXL_HDM_DECODER##n##_CTRL, ISP, 24, 4) \
|
|
REG32(CXL_HDM_DECODER##n##_TARGET_LIST_LO, \
|
|
CXL_HDM_REGISTERS_OFFSET + (0x20 * n) + 0x24) \
|
|
REG32(CXL_HDM_DECODER##n##_TARGET_LIST_HI, \
|
|
CXL_HDM_REGISTERS_OFFSET + (0x20 * n) + 0x28) \
|
|
REG32(CXL_HDM_DECODER##n##_DPA_SKIP_LO, \
|
|
CXL_HDM_REGISTERS_OFFSET + (0x20 * n) + 0x24) \
|
|
REG32(CXL_HDM_DECODER##n##_DPA_SKIP_HI, \
|
|
CXL_HDM_REGISTERS_OFFSET + (0x20 * n) + 0x28)
|
|
|
|
REG32(CXL_HDM_DECODER_CAPABILITY, CXL_HDM_REGISTERS_OFFSET)
|
|
FIELD(CXL_HDM_DECODER_CAPABILITY, DECODER_COUNT, 0, 4)
|
|
FIELD(CXL_HDM_DECODER_CAPABILITY, TARGET_COUNT, 4, 4)
|
|
FIELD(CXL_HDM_DECODER_CAPABILITY, INTERLEAVE_256B, 8, 1)
|
|
FIELD(CXL_HDM_DECODER_CAPABILITY, INTERLEAVE_4K, 9, 1)
|
|
FIELD(CXL_HDM_DECODER_CAPABILITY, POISON_ON_ERR_CAP, 10, 1)
|
|
FIELD(CXL_HDM_DECODER_CAPABILITY, 3_6_12_WAY, 11, 1)
|
|
FIELD(CXL_HDM_DECODER_CAPABILITY, 16_WAY, 12, 1)
|
|
FIELD(CXL_HDM_DECODER_CAPABILITY, UIO, 13, 1)
|
|
FIELD(CXL_HDM_DECODER_CAPABILITY, UIO_DECODER_COUNT, 16, 4)
|
|
FIELD(CXL_HDM_DECODER_CAPABILITY, MEMDATA_NXM_CAP, 20, 1)
|
|
FIELD(CXL_HDM_DECODER_CAPABILITY, SUPPORTED_COHERENCY_MODEL, 21, 2)
|
|
REG32(CXL_HDM_DECODER_GLOBAL_CONTROL, CXL_HDM_REGISTERS_OFFSET + 4)
|
|
FIELD(CXL_HDM_DECODER_GLOBAL_CONTROL, POISON_ON_ERR_EN, 0, 1)
|
|
FIELD(CXL_HDM_DECODER_GLOBAL_CONTROL, HDM_DECODER_ENABLE, 1, 1)
|
|
|
|
/* Support 4 decoders at all levels of topology */
|
|
#define CXL_HDM_DECODER_COUNT 4
|
|
|
|
HDM_DECODER_INIT(0);
|
|
HDM_DECODER_INIT(1);
|
|
HDM_DECODER_INIT(2);
|
|
HDM_DECODER_INIT(3);
|
|
|
|
/*
|
|
* CXL r3.1 Section 8.2.4.21: CXL Extended Security Capability Structure
|
|
* (Root complex only)
|
|
*/
|
|
#define EXTSEC_ENTRY_MAX 256
|
|
#define CXL_EXTSEC_CAP_VERSION 2
|
|
#define CXL_EXTSEC_REGISTERS_OFFSET \
|
|
(CXL_HDM_REGISTERS_OFFSET + CXL_HDM_REGISTERS_SIZE)
|
|
#define CXL_EXTSEC_REGISTERS_SIZE (8 * EXTSEC_ENTRY_MAX + 4)
|
|
|
|
/* CXL r3.1 Section 8.2.4.22: CXL IDE Capability Structure */
|
|
#define CXL_IDE_CAP_VERSION 2
|
|
#define CXL_IDE_REGISTERS_OFFSET \
|
|
(CXL_EXTSEC_REGISTERS_OFFSET + CXL_EXTSEC_REGISTERS_SIZE)
|
|
#define CXL_IDE_REGISTERS_SIZE 0x24
|
|
|
|
/* CXL r3.1 Section 8.2.4.23 - CXL Snoop Filter Capability Structure */
|
|
#define CXL_SNOOP_CAP_VERSION 1
|
|
#define CXL_SNOOP_REGISTERS_OFFSET \
|
|
(CXL_IDE_REGISTERS_OFFSET + CXL_IDE_REGISTERS_SIZE)
|
|
#define CXL_SNOOP_REGISTERS_SIZE 0x8
|
|
|
|
QEMU_BUILD_BUG_MSG((CXL_SNOOP_REGISTERS_OFFSET +
|
|
CXL_SNOOP_REGISTERS_SIZE) >= 0x1000,
|
|
"No space for registers");
|
|
|
|
typedef struct component_registers {
|
|
/*
|
|
* Main memory region to be registered with QEMU core.
|
|
*/
|
|
MemoryRegion component_registers;
|
|
|
|
/*
|
|
* CXL r3.1 Table 8-21: CXL Subsystem Component Register Ranges
|
|
* 0x0000 - 0x0fff CXL.io registers
|
|
* 0x1000 - 0x1fff CXL.cache and CXL.mem
|
|
* 0x2000 - 0xdfff Implementation specific
|
|
* 0xe000 - 0xe3ff CXL ARB/MUX registers
|
|
* 0xe400 - 0xffff RSVD
|
|
*/
|
|
uint32_t io_registers[CXL2_COMPONENT_IO_REGION_SIZE >> 2];
|
|
MemoryRegion io;
|
|
|
|
uint32_t cache_mem_registers[CXL2_COMPONENT_CM_REGION_SIZE >> 2];
|
|
uint32_t cache_mem_regs_write_mask[CXL2_COMPONENT_CM_REGION_SIZE >> 2];
|
|
MemoryRegion cache_mem;
|
|
|
|
MemoryRegion impl_specific;
|
|
MemoryRegion arb_mux;
|
|
MemoryRegion rsvd;
|
|
|
|
/* special_ops is used for any component that needs any specific handling */
|
|
MemoryRegionOps *special_ops;
|
|
} ComponentRegisters;
|
|
|
|
/*
|
|
* A CXL component represents all entities in a CXL hierarchy. This includes,
|
|
* host bridges, root ports, upstream/downstream switch ports, and devices
|
|
*/
|
|
typedef struct cxl_component {
|
|
ComponentRegisters crb;
|
|
union {
|
|
struct {
|
|
Range dvsecs[CXL20_MAX_DVSEC];
|
|
uint16_t dvsec_offset;
|
|
struct PCIDevice *pdev;
|
|
};
|
|
};
|
|
|
|
CDATObject cdat;
|
|
} CXLComponentState;
|
|
|
|
void cxl_component_register_block_init(Object *obj,
|
|
CXLComponentState *cxl_cstate,
|
|
const char *type);
|
|
void cxl_component_register_init_common(uint32_t *reg_state,
|
|
uint32_t *write_msk,
|
|
enum reg_type type);
|
|
|
|
void cxl_component_create_dvsec(CXLComponentState *cxl_cstate,
|
|
enum reg_type cxl_dev_type, uint16_t length,
|
|
uint16_t type, uint8_t rev, uint8_t *body);
|
|
|
|
int cxl_decoder_count_enc(int count);
|
|
int cxl_decoder_count_dec(int enc_cnt);
|
|
|
|
uint8_t cxl_interleave_ways_enc(int iw, Error **errp);
|
|
int cxl_interleave_ways_dec(uint8_t iw_enc, Error **errp);
|
|
uint8_t cxl_interleave_granularity_enc(uint64_t gran, Error **errp);
|
|
|
|
hwaddr cxl_decode_ig(int ig);
|
|
|
|
CXLComponentState *cxl_get_hb_cstate(PCIHostState *hb);
|
|
bool cxl_get_hb_passthrough(PCIHostState *hb);
|
|
|
|
bool cxl_doe_cdat_init(CXLComponentState *cxl_cstate, Error **errp);
|
|
void cxl_doe_cdat_release(CXLComponentState *cxl_cstate);
|
|
void cxl_doe_cdat_update(CXLComponentState *cxl_cstate, Error **errp);
|
|
|
|
#endif
|