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1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Copyright (C) Marvell International Ltd. and its affiliates
4  */
5 
6 #ifndef _CTRL_PEX_H
7 #define _CTRL_PEX_H
8 
9 #include "high_speed_env_spec.h"
10 
11 /* Sample at Reset */
12 #define MPP_SAMPLE_AT_RESET(id)		(0xe4200 + (id * 4))
13 
14 /* PCI Express Control and Status Registers */
15 #define MAX_PEX_BUSSES			256
16 
17 #define MISC_REGS_OFFSET		0x18200
18 #define MV_MISC_REGS_BASE		MISC_REGS_OFFSET
19 #define SOC_CTRL_REG			(MV_MISC_REGS_BASE + 0x4)
20 
21 #define PEX_IF_REGS_OFFSET(if)		((if) > 0 ?			\
22 					 (0x40000 + ((if) - 1) * 0x4000) : \
23 					 0x80000)
24 #define PEX_IF_REGS_BASE(if)		(PEX_IF_REGS_OFFSET(if))
25 #define PEX_CAPABILITIES_REG(if)	((PEX_IF_REGS_BASE(if)) + 0x60)
26 #define PEX_LINK_CTRL_STATUS2_REG(if)	((PEX_IF_REGS_BASE(if)) + 0x90)
27 #define PEX_CTRL_REG(if)		((PEX_IF_REGS_BASE(if)) + 0x1a00)
28 #define PEX_STATUS_REG(if)		((PEX_IF_REGS_BASE(if)) + 0x1a04)
29 #define PEX_DBG_STATUS_REG(if)		((PEX_IF_REGS_BASE(if)) + 0x1a64)
30 #define PEX_LINK_CAPABILITY_REG		0x6c
31 #define PEX_LINK_CTRL_STAT_REG		0x70
32 #define PXSR_PEX_DEV_NUM_OFFS		16  /* Device Number Indication */
33 #define PXSR_PEX_DEV_NUM_MASK		(0x1f << PXSR_PEX_DEV_NUM_OFFS)
34 #define PXSR_PEX_BUS_NUM_OFFS		8 /* Bus Number Indication */
35 #define PXSR_PEX_BUS_NUM_MASK		(0xff << PXSR_PEX_BUS_NUM_OFFS)
36 
37 /* PEX_CAPABILITIES_REG fields */
38 #define PCIE0_ENABLE_OFFS		0
39 #define PCIE0_ENABLE_MASK		(0x1 << PCIE0_ENABLE_OFFS)
40 #define PCIE1_ENABLE_OFFS		1
41 #define PCIE1_ENABLE_MASK		(0x1 << PCIE1_ENABLE_OFFS)
42 #define PCIE2_ENABLE_OFFS		2
43 #define PCIE2_ENABLE_MASK		(0x1 << PCIE2_ENABLE_OFFS)
44 #define PCIE3_ENABLE_OFFS		3
45 #define PCIE4_ENABLE_MASK		(0x1 << PCIE3_ENABLE_OFFS)
46 
47 /* Controller revision info */
48 #define PEX_DEVICE_AND_VENDOR_ID	0x000
49 #define PEX_CFG_DIRECT_ACCESS(if, reg)	(PEX_IF_REGS_BASE(if) + (reg))
50 
51 /* PCI Express Configuration Address Register */
52 #define PXCAR_REG_NUM_OFFS		2
53 #define PXCAR_REG_NUM_MAX		0x3f
54 #define PXCAR_REG_NUM_MASK		(PXCAR_REG_NUM_MAX << \
55 					 PXCAR_REG_NUM_OFFS)
56 #define PXCAR_FUNC_NUM_OFFS		8
57 #define PXCAR_FUNC_NUM_MAX		0x7
58 #define PXCAR_FUNC_NUM_MASK		(PXCAR_FUNC_NUM_MAX << \
59 					 PXCAR_FUNC_NUM_OFFS)
60 #define PXCAR_DEVICE_NUM_OFFS		11
61 #define PXCAR_DEVICE_NUM_MAX		0x1f
62 #define PXCAR_DEVICE_NUM_MASK		(PXCAR_DEVICE_NUM_MAX << \
63 					 PXCAR_DEVICE_NUM_OFFS)
64 #define PXCAR_BUS_NUM_OFFS		16
65 #define PXCAR_BUS_NUM_MAX		0xff
66 #define PXCAR_BUS_NUM_MASK		(PXCAR_BUS_NUM_MAX << \
67 					 PXCAR_BUS_NUM_OFFS)
68 #define PXCAR_EXT_REG_NUM_OFFS		24
69 #define PXCAR_EXT_REG_NUM_MAX		0xf
70 
71 #define PEX_CFG_ADDR_REG(if)		((PEX_IF_REGS_BASE(if)) + 0x18f8)
72 #define PEX_CFG_DATA_REG(if)		((PEX_IF_REGS_BASE(if)) + 0x18fc)
73 
74 #define PXCAR_REAL_EXT_REG_NUM_OFFS	8
75 #define PXCAR_REAL_EXT_REG_NUM_MASK	(0xf << PXCAR_REAL_EXT_REG_NUM_OFFS)
76 
77 #define PXCAR_CONFIG_EN			BIT(31)
78 #define PEX_STATUS_AND_COMMAND		0x004
79 #define PXSAC_MABORT			BIT(29) /* Recieved Master Abort */
80 
81 int hws_pex_config(const struct serdes_map *serdes_map, u8 count);
82 int pex_local_bus_num_set(u32 pex_if, u32 bus_num);
83 int pex_local_dev_num_set(u32 pex_if, u32 dev_num);
84 u32 pex_config_read(u32 pex_if, u32 bus, u32 dev, u32 func, u32 reg_off);
85 
86 void board_pex_config(void);
87 
88 #endif
89