xref: /openbmc/linux/drivers/mcb/mcb-internal.h (revision 23c2b932)
1 #ifndef __MCB_INTERNAL
2 #define __MCB_INTERNAL
3 
4 #include <linux/types.h>
5 
6 #define PCI_VENDOR_ID_MEN		0x1a88
7 #define PCI_DEVICE_ID_MEN_CHAMELEON	0x4d45
8 #define CHAMELEONV2_MAGIC		0xabce
9 #define CHAM_HEADER_SIZE		0x200
10 
11 enum chameleon_descriptor_type {
12 	CHAMELEON_DTYPE_GENERAL = 0x0,
13 	CHAMELEON_DTYPE_BRIDGE = 0x1,
14 	CHAMELEON_DTYPE_CPU = 0x2,
15 	CHAMELEON_DTYPE_BAR = 0x3,
16 	CHAMELEON_DTYPE_END = 0xf,
17 };
18 
19 enum chameleon_bus_type {
20 	CHAMELEON_BUS_WISHBONE,
21 	CHAMELEON_BUS_AVALON,
22 	CHAMELEON_BUS_LPC,
23 	CHAMELEON_BUS_ISA,
24 };
25 
26 /**
27  * struct chameleon_fpga_header
28  *
29  * @revision:	Revison of Chameleon table in FPGA
30  * @model:	Chameleon table model ASCII char
31  * @minor:	Revision minor
32  * @bus_type:	Bus type (usually %CHAMELEON_BUS_WISHBONE)
33  * @magic:	Chameleon header magic number (0xabce for version 2)
34  * @reserved:	Reserved
35  * @filename:	Filename of FPGA bitstream
36  */
37 struct chameleon_fpga_header {
38 	u8 revision;
39 	char model;
40 	u8 minor;
41 	u8 bus_type;
42 	u16 magic;
43 	u16 reserved;
44 	/* This one has no '\0' at the end!!! */
45 	char filename[CHAMELEON_FILENAME_LEN];
46 } __packed;
47 #define HEADER_MAGIC_OFFSET 0x4
48 
49 /**
50  * struct chameleon_gdd - Chameleon General Device Descriptor
51  *
52  * @irq:	the position in the FPGA's IRQ controller vector
53  * @rev:	the revision of the variant's implementation
54  * @var:	the variant of the IP core
55  * @dev:	the device  the IP core is
56  * @dtype:	device descriptor type
57  * @bar:	BAR offset that must be added to module offset
58  * @inst:	the instance number of the device, 0 is first instance
59  * @group:	the group the device belongs to (0 = no group)
60  * @reserved:	reserved
61  * @offset:	beginning of the address window of desired module
62  * @size:	size of the module's address window
63  */
64 struct chameleon_gdd {
65 	__le32 reg1;
66 	__le32 reg2;
67 	__le32 offset;
68 	__le32 size;
69 
70 } __packed;
71 
72 /* GDD Register 1 fields */
73 #define GDD_IRQ(x) ((x) & 0x1f)
74 #define GDD_REV(x) (((x) >> 5) & 0x3f)
75 #define GDD_VAR(x) (((x) >> 11) & 0x3f)
76 #define GDD_DEV(x) (((x) >> 18) & 0x3ff)
77 #define GDD_DTY(x) (((x) >> 28) & 0xf)
78 
79 /* GDD Register 2 fields */
80 #define GDD_BAR(x) ((x) & 0x7)
81 #define GDD_INS(x) (((x) >> 3) & 0x3f)
82 #define GDD_GRP(x) (((x) >> 9) & 0x3f)
83 
84 /**
85  * struct chameleon_bdd - Chameleon Bridge Device Descriptor
86  *
87  * @irq:	the position in the FPGA's IRQ controller vector
88  * @rev:	the revision of the variant's implementation
89  * @var:	the variant of the IP core
90  * @dev:	the device  the IP core is
91  * @dtype:	device descriptor type
92  * @bar:	BAR offset that must be added to module offset
93  * @inst:	the instance number of the device, 0 is first instance
94  * @dbar:	destination bar from the bus _behind_ the bridge
95  * @chamoff:	offset within the BAR of the source bus
96  * @offset:
97  * @size:
98  */
99 struct chameleon_bdd {
100 	unsigned int irq:6;
101 	unsigned int rev:6;
102 	unsigned int var:6;
103 	unsigned int dev:10;
104 	unsigned int dtype:4;
105 	unsigned int bar:3;
106 	unsigned int inst:6;
107 	unsigned int dbar:3;
108 	unsigned int group:6;
109 	unsigned int reserved:14;
110 	u32 chamoff;
111 	u32 offset;
112 	u32 size;
113 } __packed;
114 
115 int chameleon_parse_cells(struct mcb_bus *bus, phys_addr_t mapbase,
116 			  void __iomem *base);
117 
118 #endif
119