1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* Copyright(c) 2020 Intel Corporation. All rights reserved. */
8 #define CXL_MEMORY_PROGIF 0x10
11 * See section 8.1 Configuration Space Registers in the CXL 2.0
12 * Specification. Names are taken straight from the specification with "CXL" and
13 * "DVSEC" redundancies removed. When obvious, abbreviations may be used.
15 #define PCI_DVSEC_HEADER1_LENGTH_MASK GENMASK(31, 20)
16 #define PCI_DVSEC_VENDOR_ID_CXL 0x1E98
18 /* CXL 2.0 8.1.3: PCIe DVSEC for CXL Device */
19 #define CXL_DVSEC_PCIE_DEVICE 0
20 #define CXL_DVSEC_CAP_OFFSET 0xA
21 #define CXL_DVSEC_MEM_CAPABLE BIT(2)
22 #define CXL_DVSEC_HDM_COUNT_MASK GENMASK(5, 4)
23 #define CXL_DVSEC_CTRL_OFFSET 0xC
24 #define CXL_DVSEC_MEM_ENABLE BIT(2)
25 #define CXL_DVSEC_RANGE_SIZE_HIGH(i) (0x18 + (i * 0x10))
26 #define CXL_DVSEC_RANGE_SIZE_LOW(i) (0x1C + (i * 0x10))
27 #define CXL_DVSEC_MEM_INFO_VALID BIT(0)
28 #define CXL_DVSEC_MEM_ACTIVE BIT(1)
29 #define CXL_DVSEC_MEM_SIZE_LOW_MASK GENMASK(31, 28)
30 #define CXL_DVSEC_RANGE_BASE_HIGH(i) (0x20 + (i * 0x10))
31 #define CXL_DVSEC_RANGE_BASE_LOW(i) (0x24 + (i * 0x10))
32 #define CXL_DVSEC_MEM_BASE_LOW_MASK GENMASK(31, 28)
34 #define CXL_DVSEC_RANGE_MAX 2
36 /* CXL 2.0 8.1.4: Non-CXL Function Map DVSEC */
37 #define CXL_DVSEC_FUNCTION_MAP 2
39 /* CXL 2.0 8.1.5: CXL 2.0 Extensions DVSEC for Ports */
40 #define CXL_DVSEC_PORT_EXTENSIONS 3
42 /* CXL 2.0 8.1.6: GPF DVSEC for CXL Port */
43 #define CXL_DVSEC_PORT_GPF 4
45 /* CXL 2.0 8.1.7: GPF DVSEC for CXL Device */
46 #define CXL_DVSEC_DEVICE_GPF 5
48 /* CXL 2.0 8.1.8: PCIe DVSEC for Flex Bus Port */
49 #define CXL_DVSEC_PCIE_FLEXBUS_PORT 7
51 /* CXL 2.0 8.1.9: Register Locator DVSEC */
52 #define CXL_DVSEC_REG_LOCATOR 8
53 #define CXL_DVSEC_REG_LOCATOR_BLOCK1_OFFSET 0xC
54 #define CXL_DVSEC_REG_LOCATOR_BIR_MASK GENMASK(2, 0)
55 #define CXL_DVSEC_REG_LOCATOR_BLOCK_ID_MASK GENMASK(15, 8)
56 #define CXL_DVSEC_REG_LOCATOR_BLOCK_OFF_LOW_MASK GENMASK(31, 16)
59 * NOTE: Currently all the functions which are enabled for CXL require their
60 * vectors to be in the first 16. Use this as the default max.
62 #define CXL_PCI_DEFAULT_MAX_VECTORS 16
64 /* Register Block Identifier (RBI) */
65 enum cxl_regloc_type {
66 CXL_REGLOC_RBI_EMPTY = 0,
67 CXL_REGLOC_RBI_COMPONENT,
69 CXL_REGLOC_RBI_MEMDEV,
82 struct cdat_entry_header {
88 int devm_cxl_port_enumerate_dports(struct cxl_port *port);
90 int cxl_hdm_decode_init(struct cxl_dev_state *cxlds, struct cxl_hdm *cxlhdm,
91 struct cxl_endpoint_dvsec_info *info);
92 void read_cdat_data(struct cxl_port *port);
93 void cxl_cor_error_detected(struct pci_dev *pdev);
94 pci_ers_result_t cxl_error_detected(struct pci_dev *pdev,
95 pci_channel_state_t state);
96 #endif /* __CXL_PCI_H__ */