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1 | /** @file\r |
2 | The interface layer for memory controller access.\r | |
3 | It is supporting both real hardware platform and simulation environment.\r | |
4 | \r | |
5 | Copyright (c) 2013-2015 Intel Corporation.\r | |
6 | \r | |
7 | This program and the accompanying materials\r | |
8 | are licensed and made available under the terms and conditions of the BSD License\r | |
9 | which accompanies this distribution. The full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | \r | |
15 | **/\r | |
16 | #include "mrc.h"\r | |
17 | #include "memory_options.h"\r | |
18 | #include "meminit_utils.h"\r | |
19 | #include "io.h"\r | |
20 | \r | |
21 | #ifdef SIM\r | |
22 | \r | |
23 | void SimMmio32Write (\r | |
24 | uint32_t be,\r | |
25 | uint32_t address,\r | |
26 | uint32_t data );\r | |
27 | \r | |
28 | void SimMmio32Read (\r | |
29 | uint32_t be,\r | |
30 | uint32_t address,\r | |
31 | uint32_t *data );\r | |
32 | \r | |
33 | void SimDelayClk (\r | |
34 | uint32_t x2clk );\r | |
35 | \r | |
36 | // This is a simple delay function.\r | |
37 | // It takes "nanoseconds" as a parameter.\r | |
38 | void delay_n(uint32_t nanoseconds)\r | |
39 | {\r | |
40 | SimDelayClk( 800*nanoseconds/1000);\r | |
41 | }\r | |
42 | #endif\r | |
43 | \r | |
44 | /****\r | |
45 | *\r | |
46 | ***/\r | |
47 | uint32_t Rd32(\r | |
48 | uint32_t unit,\r | |
49 | uint32_t addr)\r | |
50 | {\r | |
51 | uint32_t data;\r | |
52 | \r | |
53 | switch (unit)\r | |
54 | {\r | |
55 | case MEM:\r | |
56 | case MMIO:\r | |
57 | #ifdef SIM\r | |
58 | SimMmio32Read( 1, addr, &data);\r | |
59 | #else\r | |
60 | data = *PTR32(addr);\r | |
61 | #endif\r | |
62 | break;\r | |
63 | \r | |
64 | case MCU:\r | |
65 | case HOST_BRIDGE:\r | |
66 | case MEMORY_MANAGER:\r | |
67 | case HTE:\r | |
68 | // Handle case addr bigger than 8bit\r | |
69 | pciwrite32(0, 0, 0, SB_HADR_REG, addr & 0xFFF00);\r | |
70 | addr &= 0x00FF;\r | |
71 | \r | |
72 | pciwrite32(0, 0, 0, SB_PACKET_REG,\r | |
73 | SB_COMMAND(SB_REG_READ_OPCODE, unit, addr));\r | |
74 | data = pciread32(0, 0, 0, SB_DATA_REG);\r | |
75 | break;\r | |
76 | \r | |
77 | case DDRPHY:\r | |
78 | // Handle case addr bigger than 8bit\r | |
79 | pciwrite32(0, 0, 0, SB_HADR_REG, addr & 0xFFF00);\r | |
80 | addr &= 0x00FF;\r | |
81 | \r | |
82 | pciwrite32(0, 0, 0, SB_PACKET_REG,\r | |
83 | SB_COMMAND(SB_DDRIO_REG_READ_OPCODE, unit, addr));\r | |
84 | data = pciread32(0, 0, 0, SB_DATA_REG);\r | |
85 | break;\r | |
86 | \r | |
87 | default:\r | |
88 | DEAD_LOOP()\r | |
89 | ;\r | |
90 | }\r | |
91 | \r | |
92 | if (unit < MEM)\r | |
93 | DPF(D_REGRD, "RD32 %03X %08X %08X\n", unit, addr, data);\r | |
94 | \r | |
95 | return data;\r | |
96 | }\r | |
97 | \r | |
98 | /****\r | |
99 | *\r | |
100 | ***/\r | |
101 | void Wr32(\r | |
102 | uint32_t unit,\r | |
103 | uint32_t addr,\r | |
104 | uint32_t data)\r | |
105 | {\r | |
106 | if (unit < MEM)\r | |
107 | DPF(D_REGWR, "WR32 %03X %08X %08X\n", unit, addr, data);\r | |
108 | \r | |
109 | switch (unit)\r | |
110 | {\r | |
111 | case MEM:\r | |
112 | case MMIO:\r | |
113 | #ifdef SIM\r | |
114 | SimMmio32Write( 1, addr, data);\r | |
115 | #else\r | |
116 | *PTR32(addr) = data;\r | |
117 | #endif\r | |
118 | break;\r | |
119 | \r | |
120 | case MCU:\r | |
121 | case HOST_BRIDGE:\r | |
122 | case MEMORY_MANAGER:\r | |
123 | case HTE:\r | |
124 | // Handle case addr bigger than 8bit\r | |
125 | pciwrite32(0, 0, 0, SB_HADR_REG, addr & 0xFFF00);\r | |
126 | addr &= 0x00FF;\r | |
127 | \r | |
128 | pciwrite32(0, 0, 0, SB_DATA_REG, data);\r | |
129 | pciwrite32(0, 0, 0, SB_PACKET_REG,\r | |
130 | SB_COMMAND(SB_REG_WRITE_OPCODE, unit, addr));\r | |
131 | break;\r | |
132 | \r | |
133 | case DDRPHY:\r | |
134 | // Handle case addr bigger than 8bit\r | |
135 | pciwrite32(0, 0, 0, SB_HADR_REG, addr & 0xFFF00);\r | |
136 | addr &= 0x00FF;\r | |
137 | \r | |
138 | pciwrite32(0, 0, 0, SB_DATA_REG, data);\r | |
139 | pciwrite32(0, 0, 0, SB_PACKET_REG,\r | |
140 | SB_COMMAND(SB_DDRIO_REG_WRITE_OPCODE, unit, addr));\r | |
141 | break;\r | |
142 | \r | |
143 | case DCMD:\r | |
144 | pciwrite32(0, 0, 0, SB_HADR_REG, 0);\r | |
145 | pciwrite32(0, 0, 0, SB_DATA_REG, data);\r | |
146 | pciwrite32(0, 0, 0, SB_PACKET_REG,\r | |
147 | SB_COMMAND(SB_DRAM_CMND_OPCODE, MCU, 0));\r | |
148 | break;\r | |
149 | \r | |
150 | default:\r | |
151 | DEAD_LOOP()\r | |
152 | ;\r | |
153 | }\r | |
154 | }\r | |
155 | \r | |
156 | /****\r | |
157 | *\r | |
158 | ***/\r | |
159 | void WrMask32(\r | |
160 | uint32_t unit,\r | |
161 | uint32_t addr,\r | |
162 | uint32_t data,\r | |
163 | uint32_t mask)\r | |
164 | {\r | |
165 | Wr32(unit, addr, ((Rd32(unit, addr) & ~mask) | (data & mask)));\r | |
166 | }\r | |
167 | \r | |
168 | /****\r | |
169 | *\r | |
170 | ***/\r | |
171 | void pciwrite32(\r | |
172 | uint32_t bus,\r | |
173 | uint32_t dev,\r | |
174 | uint32_t fn,\r | |
175 | uint32_t reg,\r | |
176 | uint32_t data)\r | |
177 | {\r | |
178 | Wr32(MMIO, PCIADDR(bus,dev,fn,reg), data);\r | |
179 | }\r | |
180 | \r | |
181 | /****\r | |
182 | *\r | |
183 | ***/\r | |
184 | uint32_t pciread32(\r | |
185 | uint32_t bus,\r | |
186 | uint32_t dev,\r | |
187 | uint32_t fn,\r | |
188 | uint32_t reg)\r | |
189 | {\r | |
190 | return Rd32(MMIO, PCIADDR(bus,dev,fn,reg));\r | |
191 | }\r | |
192 | \r |