AMX DESIGN XPRESS V 1.5 - PROGRAMMER GUIDE User's Guide Page 254
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17–32 Chapter 17: Testbench and Design Example
BFM Procedures and Functions
Cyclone V Hard IP for PCI Express December 2013 Altera Corporation
User Guide
ebfm_cfgwr_imm_nowt Procedure
The
ebfm_cfgwr_imm_nowt
procedure writes up to four bytes of data to the specified
configuration register. This procedure returns as soon as the VC interface module
accepts the transaction, allowing other writes to be issued in the interim. Use this
procedure only when successful completion status is expected.
Table 17–25. ebfm_cfgwr_imm_nowt Procedure
Location altpcietb_bfm_driver_rp.v
Syntax
ebfm_cfgwr_imm_nowt(bus_num, dev_num, fnc_num, imm_regb_adr, regb_len, imm_data)
Arguments
bus_num
PCI Express bus number of the target device.
dev_num
PCI Express device number of the target device.
fnc_num
Function number in the target device to be accessed.
regb_ad
Byte-specific address of the register to be written.
regb_ln
Length, in bytes, of the data written. Maximum length is four bytes, The
regb_ln
the
regb_ad
arguments cannot cross a DWORD boundary.
imm_data
Data to be written
This argument is
reg [31:0]
.
In both languages, the bits written depend on the length:
Length Bits Written
4 [31:0]
3 [23:0]
2 [15:0]
1 [7:0]
- User Guide 1
- Contents 3
- Chapter 7. IP Core Interfaces 4
- Chapter 9. Reset and Clocks 5
- Chapter 18. Debugging 8
- 1. Datasheet 9
- 1–2 Chapter 1: Datasheet 10
- Features 10
- Notes to Table 1–2: 11
- Release Information 12
- Device Family Support 12
- Configurations 12
- Debug Features 13
- IP Core Verification 14
- Recommended Speed Grades 15
- 1–8 Chapter 1: Datasheet 16
- Hard IP for PCI Express 17
- Qsys Design Flow 25
- Generating the Testbench 26
- Simulating the Example Design 27
- Modifying the Example Design 34
- Running Qsys 36
- Table 3–5 38
- On Chip r 40
- Direct BFM’s shared memory 47
- {*reconfig_xcvr_clk*} 50
- Compiling the Design 51
- Programming a Device 51
- System Settings 54
- Port Functions 55
- Error Reporting 57
- 31 19 18 17 16 15 14 58
- Power Management 59
- Legacy Interrupt 63
- Base Address Registers 66
- PCI Express/PCI Capabilities 67
- Header 68
- 6. IP Core Architecture 75
- Avalon-ST Interface 77
- RX Datapath 77
- TX Datapath 77
- Altera FPGA 77
- Clocks and Reset 78
- Interrupts 79
- Transaction Layer 79
- Protocol Layers 80
- Configuration Space 81
- Data Link Layer 81
- Figure 6–4. Data Link Layer 82
- Physical Layer 83
- Figure 6–5. Physical Layer 84
- Multi-Function Support 86
- PCI Express Avalon-MM Bridge 86
- Avalon-MM Bridge TLPs 88
- Figure 6–9. Poor Address Map 93
- RX Block 97
- Avalon-MM RX Master Block 97
- TX Block 98
- Interrupt Handler Block 98
- 7. IP Core Interfaces 99
- Note to Table 7–1: 100
- RX Port 102
- Avalon-ST RX Interface 104
- Note to Figure 7–8: 109
- Avalon-ST TX Interface 114
- Note to Table 7–4: 117
- ECRC Forwarding 122
- Clock Signals 122
- Reset Signals 123
- and the LTSSM L0 state 125
- ECC Error Signals 126
- Interrupts for Endpoints 126
- Interrupts for Root Ports 127
- Completion Side Band Signals 127
- Specification, Rev. 2.1 129
- D E F 0 1 2 3 132
- Notes to Table 7–12: 133
- LMI Signals 137
- LMI Read Operation 138
- LMI Write Operation 138
- Power Management Signals 139
- (Full-Featured Qsys) 141
- Completer-Only Single DWord 142
- RX Avalon-MM Master Signals 144
- Transceiver Reconfiguration 146
- Serial Interface Signals 146
- PIPE Interface Signals 150
- Test Signals 153
- Notes to Table 7–26: 154
- 8. Register Descriptions 155
- Note to Table 8–2: 156
- Note to Table 8–3: 157
- Note to Table 8–4: 157
- Note to Table 8–5: 157
- Note to Table 8–6: 158
- Note to Table 8–7: 158
- Note to Table 8–8: 159
- s and wait 162
- PCI Express Mailbox Registers 167
- Note to Table 8–30: 168
- Root Port TLP Data Registers 170
- Sending a TLP 173
- Receiving a Completion TLP 173
- Endpoints 174
- Avalon-MM Mailbox Registers 175
- Spec 2.1 176
- 9. Reset and Clocks 181
- Example Design 182
- 127 cycles 184
- 300 PPM 185
- Transceiver Clock Signals 186
- Supported Message Types 189
- Notes to Table 10–1: 191
- Receive Buffer Reordering 192
- Notes to Table 10–2: 193
- MSI Interrupts 195
- 11–2 Chapter 11: Interrupts 196
- Note to Figure 11–4: 197
- Legacy Interrupts 198
- Application Layer 199
- 11–6 Chapter 11: Interrupts 200
- MSI/MSI-X Support 201
- Qsys System 202
- 12. Optional Features 203
- ECRC on the RX Path 204
- ECRC on the TX Path 205
- 13. Flow Control 207
- 13–2 Chapter 13: Flow Control 208
- Throughput of Posted Writes 208
- Chapter 13: Flow Control 13–3 209
- 13–4 Chapter 13: Flow Control 210
- 14. Error Handling 211
- Physical Layer Errors 212
- Data Link Layer Errors 212
- Transaction Layer Errors 213
- s limit 214
- Note to Table 14–4: 215
- Figure 15–2 218
- Core User Guide 219
- 16. SDC Timing Constraints 221
- Endpoint Testbench 224
- Root Port Testbench 225
- Chaining DMA Design Examples 226
- Root Complex 227
- Chaining DMA 227
- Hard IP for 227
- PCI Express 227
- Note to Table 17–2: 232
- Note to Table 17–4: 233
- Test Driver Module 236
- DMA Write Cycles 237
- DMA Read Cycles 239
- Root Port Design Example 240
- Root Port 241
- Variation 241
- (variation_name.v) 241
- Root Port BFM 242
- BFM Memory Map 244
- Figure 17–6 248
- BFM Read and Write Procedures 250
- BFM Procedures and Functions 251
- BFM Configuration Procedures 256
- Shared Memory Constants 257
- 18. Debugging 271
- 18–2 Chapter 18: Debugging 272
- Link Training 272
- Chapter 18: Debugging 18–3 273
- 18–4 Chapter 18: Debugging 274
- Chapter 18: Debugging 18–5 275
- Setting Up Simulation 276
- Chapter 18: Debugging 18–7 277
- Use Third-Party PCIe Analyzer 278
- BIOS Enumeration Issues 278
- Notes to Table A–7: 280
- Chapter : A–3 281
- Notes to Table A–16: 282
- Additional Information 283
- Info–2 Revision History 284
- How to Contact Altera 285
- Typographic Conventions 286
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