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1 //////////////////////////////////////////////////////////////////////
2 //// ////
3 //// File name: pci_conf_space.v ////
4 //// ////
5 //// This file is part of the "PCI bridge" project ////
6 //// http://www.opencores.org/cores/pci/ ////
7 //// ////
8 //// Author(s): ////
9 //// - tadej@opencores.org ////
10 //// - Tadej Markovic ////
11 //// ////
12 //// All additional information is avaliable in the README.txt ////
13 //// file. ////
14 //// ////
15 //// ////
16 //////////////////////////////////////////////////////////////////////
17 //// ////
18 //// Copyright (C) 2000 Tadej Markovic, tadej@opencores.org ////
19 //// ////
20 //// This source file may be used and distributed without ////
21 //// restriction provided that this copyright statement is not ////
22 //// removed from the file and that any derivative work contains ////
23 //// the original copyright notice and the associated disclaimer. ////
24 //// ////
25 //// This source file is free software; you can redistribute it ////
26 //// and/or modify it under the terms of the GNU Lesser General ////
27 //// Public License as published by the Free Software Foundation; ////
28 //// either version 2.1 of the License, or (at your option) any ////
29 //// later version. ////
30 //// ////
31 //// This source is distributed in the hope that it will be ////
32 //// useful, but WITHOUT ANY WARRANTY; without even the implied ////
33 //// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
34 //// PURPOSE. See the GNU Lesser General Public License for more ////
35 //// details. ////
36 //// ////
37 //// You should have received a copy of the GNU Lesser General ////
38 //// Public License along with this source; if not, download it ////
39 //// from http://www.opencores.org/lgpl.shtml ////
40 //// ////
41 //////////////////////////////////////////////////////////////////////
42 //
43 // CVS Revision History
44 //
45 // $Log: pci_conf_space.v,v $
46 // Revision 1.1 2007-03-20 17:50:56 sithglan
47 // add shit
48 //
49 // Revision 1.10 2004/08/19 16:04:53 mihad
50 // Removed some unused signals.
51 //
52 // Revision 1.9 2004/08/19 15:27:34 mihad
53 // Changed minimum pci image size to 256 bytes because
54 // of some PC system problems with size of IO images.
55 //
56 // Revision 1.8 2004/07/07 12:45:01 mihad
57 // Added SubsystemVendorID, SubsystemID, MAXLatency, MinGnt defines.
58 // Enabled value loading from serial EEPROM for all of the above + VendorID and DeviceID registers.
59 //
60 // Revision 1.7 2004/01/24 11:54:18 mihad
61 // Update! SPOCI Implemented!
62 //
63 // Revision 1.6 2003/12/28 09:54:48 fr2201
64 // def_wb_imagex_addr_map defined correctly
65 //
66 // Revision 1.5 2003/12/28 09:20:00 fr2201
67 // Reset values for PCI, WB defined (PCI_TAx,WB_BAx,WB_TAx,WB_AMx,WB_BAx_MEM_IO)
68 //
69 // Revision 1.4 2003/12/19 11:11:30 mihad
70 // Compact PCI Hot Swap support added.
71 // New testcases added.
72 // Specification updated.
73 // Test application changed to support WB B3 cycles.
74 //
75 // Revision 1.3 2003/08/14 13:06:02 simons
76 // synchronizer_flop replaced with pci_synchronizer_flop, artisan ram instance updated.
77 //
78 // Revision 1.2 2003/03/26 13:16:18 mihad
79 // Added the reset value parameter to the synchronizer flop module.
80 // Added resets to all synchronizer flop instances.
81 // Repaired initial sync value in fifos.
82 //
83 // Revision 1.1 2003/01/27 16:49:31 mihad
84 // Changed module and file names. Updated scripts accordingly. FIFO synchronizations changed.
85 //
86 // Revision 1.4 2002/08/13 11:03:53 mihad
87 // Added a few testcases. Repaired wrong reset value for PCI_AM5 register. Repaired Parity Error Detected bit setting. Changed PCI_AM0 to always enabled(regardles of PCI_AM0 define), if image 0 is used as configuration image
88 //
89 // Revision 1.3 2002/02/01 15:25:12 mihad
90 // Repaired a few bugs, updated specification, added test bench files and design document
91 //
92 // Revision 1.2 2001/10/05 08:14:28 mihad
93 // Updated all files with inclusion of timescale file for simulation purposes.
94 //
95 // Revision 1.1.1.1 2001/10/02 15:33:46 mihad
96 // New project directory structure
97 //
98 //
99
100 `include "pci_constants.v"
101
102 // synopsys translate_off
103 `include "timescale.v"
104 // synopsys translate_on
105
106 /*-----------------------------------------------------------------------------------------------------------
107 w_ prefix is a sign for Write (and read) side of Dual-Port registers
108 r_ prefix is a sign for Read only side of Dual-Port registers
109 In the first line there are DATA and ADDRESS ports, in the second line there are write enable and read
110 enable signals with chip-select (conf_hit) for config. space.
111 In the third line there are output signlas from Command register of the PCI configuration header !!!
112 In the fourth line there are input signals to Status register of the PCI configuration header !!!
113 In the fifth line there is output from Latency Timer & r_Interrupt pin registers of the PCI conf. header !!!
114 Following are IMAGE specific registers, from which PCI_BASE_ADDR registers are the same as base address
115 registers from the PCI conf. header !!!
116 -----------------------------------------------------------------------------------------------------------*/
117 // normal R/W address, data and control
118 module pci_conf_space
119 ( w_conf_address_in, w_conf_data_in, w_conf_data_out, r_conf_address_in, r_conf_data_out,
120 w_we_i, w_re, r_re, w_byte_en_in, w_clock, reset, pci_clk, wb_clk,
121 // outputs from command register of the PCI header
122 serr_enable, perr_response, pci_master_enable, memory_space_enable, io_space_enable,
123 // inputs to status register of the PCI header
124 perr_in, serr_in, master_abort_recv, target_abort_recv, target_abort_set, master_data_par_err,
125 // output from cache_line_size, latency timer and r_interrupt_pin register of the PCI header
126 cache_line_size_to_pci, cache_line_size_to_wb, cache_lsize_not_zero_to_wb,
127 latency_tim,
128 // output from all pci IMAGE registers
129 pci_base_addr0, pci_base_addr1, pci_base_addr2, pci_base_addr3, pci_base_addr4, pci_base_addr5,
130 pci_memory_io0, pci_memory_io1, pci_memory_io2, pci_memory_io3, pci_memory_io4, pci_memory_io5,
131 pci_addr_mask0, pci_addr_mask1, pci_addr_mask2, pci_addr_mask3, pci_addr_mask4, pci_addr_mask5,
132 pci_tran_addr0, pci_tran_addr1, pci_tran_addr2, pci_tran_addr3, pci_tran_addr4, pci_tran_addr5,
133 pci_img_ctrl0, pci_img_ctrl1, pci_img_ctrl2, pci_img_ctrl3, pci_img_ctrl4, pci_img_ctrl5,
134 // input to pci error control and status register, error address and error data registers
135 pci_error_be, pci_error_bc, pci_error_rty_exp, pci_error_es, pci_error_sig, pci_error_addr,
136 pci_error_data,
137 // output from all wishbone IMAGE registers
138 wb_base_addr0, wb_base_addr1, wb_base_addr2, wb_base_addr3, wb_base_addr4, wb_base_addr5,
139 wb_memory_io0, wb_memory_io1, wb_memory_io2, wb_memory_io3, wb_memory_io4, wb_memory_io5,
140 wb_addr_mask0, wb_addr_mask1, wb_addr_mask2, wb_addr_mask3, wb_addr_mask4, wb_addr_mask5,
141 wb_tran_addr0, wb_tran_addr1, wb_tran_addr2, wb_tran_addr3, wb_tran_addr4, wb_tran_addr5,
142 wb_img_ctrl0, wb_img_ctrl1, wb_img_ctrl2, wb_img_ctrl3, wb_img_ctrl4, wb_img_ctrl5,
143 // input to wb error control and status register, error address and error data registers
144 wb_error_be, wb_error_bc, wb_error_rty_exp, wb_error_es, wb_error_sig, wb_error_addr, wb_error_data,
145 // output from conf. cycle generation register (sddress), int. control register & interrupt output
146 config_addr, icr_soft_res, int_out,
147 // input to interrupt status register
148 isr_sys_err_int, isr_par_err_int, isr_int_prop,
149
150 pci_init_complete_out, wb_init_complete_out
151
152 `ifdef PCI_CPCI_HS_IMPLEMENT
153 ,
154 pci_cpci_hs_enum_oe_o, pci_cpci_hs_led_oe_o, pci_cpci_hs_es_i
155 `endif
156
157 `ifdef PCI_SPOCI
158 ,
159 spoci_scl_oe_o, spoci_sda_i, spoci_sda_oe_o
160 `endif
161 ) ;
162
163
164 /*###########################################################################################################
165 /////////////////////////////////////////////////////////////////////////////////////////////////////////////
166 Input and output ports
167 ======================
168 /////////////////////////////////////////////////////////////////////////////////////////////////////////////
169 ###########################################################################################################*/
170
171 // output data
172 output [31 : 0] w_conf_data_out ;
173 output [31 : 0] r_conf_data_out ;
174 reg [31 : 0] w_conf_data_out ;
175
176 `ifdef NO_CNF_IMAGE
177 `else
178 reg [31 : 0] r_conf_data_out ;
179 `endif
180
181 // input data
182 input [31 : 0] w_conf_data_in ;
183 wire [31 : 0] w_conf_pdata_reduced ; // reduced data written into PCI image registers
184 wire [31 : 0] w_conf_wdata_reduced ; // reduced data written into WB image registers
185 // input address
186 input [11 : 0] w_conf_address_in ;
187 input [11 : 0] r_conf_address_in ;
188 // input control signals
189 input w_we_i ;
190 input w_re ;
191 input r_re ;
192 input [3 : 0] w_byte_en_in ;
193 input w_clock ;
194 input reset ;
195 input pci_clk ;
196 input wb_clk ;
197 // PCI header outputs from command register
198 output serr_enable ;
199 output perr_response ;
200 output pci_master_enable ;
201 output memory_space_enable ;
202 output io_space_enable ;
203 // PCI header inputs to status register
204 input perr_in ;
205 input serr_in ;
206 input master_abort_recv ;
207 input target_abort_recv ;
208 input target_abort_set ;
209 input master_data_par_err ;
210 // PCI header output from cache_line_size, latency timer and interrupt pin
211 output [7 : 0] cache_line_size_to_pci ; // sinchronized to PCI clock
212 output [7 : 0] cache_line_size_to_wb ; // sinchronized to WB clock
213 output cache_lsize_not_zero_to_wb ; // used in WBU and PCIU
214 output [7 : 0] latency_tim ;
215 //output [2 : 0] int_pin ; // only 3 LSbits are important!
216 // PCI output from image registers
217 `ifdef GUEST
218 output [31:12] pci_base_addr0 ;
219 `endif
220
221 `ifdef HOST
222 `ifdef NO_CNF_IMAGE
223 output [31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] pci_base_addr0 ;
224 `else
225 output [31:12] pci_base_addr0 ;
226 `endif
227 `endif
228
229 output [31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] pci_base_addr1 ;
230 output [31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] pci_base_addr2 ;
231 output [31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] pci_base_addr3 ;
232 output [31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] pci_base_addr4 ;
233 output [31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] pci_base_addr5 ;
234 output pci_memory_io0 ;
235 output pci_memory_io1 ;
236 output pci_memory_io2 ;
237 output pci_memory_io3 ;
238 output pci_memory_io4 ;
239 output pci_memory_io5 ;
240 output [31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] pci_addr_mask0 ;
241 output [31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] pci_addr_mask1 ;
242 output [31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] pci_addr_mask2 ;
243 output [31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] pci_addr_mask3 ;
244 output [31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] pci_addr_mask4 ;
245 output [31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] pci_addr_mask5 ;
246 output [31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] pci_tran_addr0 ;
247 output [31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] pci_tran_addr1 ;
248 output [31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] pci_tran_addr2 ;
249 output [31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] pci_tran_addr3 ;
250 output [31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] pci_tran_addr4 ;
251 output [31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] pci_tran_addr5 ;
252 output [2 : 1] pci_img_ctrl0 ;
253 output [2 : 1] pci_img_ctrl1 ;
254 output [2 : 1] pci_img_ctrl2 ;
255 output [2 : 1] pci_img_ctrl3 ;
256 output [2 : 1] pci_img_ctrl4 ;
257 output [2 : 1] pci_img_ctrl5 ;
258 // PCI input to pci error control and status register, error address and error data registers
259 input [3 : 0] pci_error_be ;
260 input [3 : 0] pci_error_bc ;
261 input pci_error_rty_exp ;
262 input pci_error_es ;
263 input pci_error_sig ;
264 input [31 : 0] pci_error_addr ;
265 input [31 : 0] pci_error_data ;
266 // WISHBONE output from image registers
267 output [31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] wb_base_addr0 ;
268 output [31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] wb_base_addr1 ;
269 output [31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] wb_base_addr2 ;
270 output [31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] wb_base_addr3 ;
271 output [31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] wb_base_addr4 ;
272 output [31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] wb_base_addr5 ;
273 output wb_memory_io0 ;
274 output wb_memory_io1 ;
275 output wb_memory_io2 ;
276 output wb_memory_io3 ;
277 output wb_memory_io4 ;
278 output wb_memory_io5 ;
279 output [31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] wb_addr_mask0 ;
280 output [31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] wb_addr_mask1 ;
281 output [31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] wb_addr_mask2 ;
282 output [31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] wb_addr_mask3 ;
283 output [31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] wb_addr_mask4 ;
284 output [31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] wb_addr_mask5 ;
285 output [31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] wb_tran_addr0 ;
286 output [31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] wb_tran_addr1 ;
287 output [31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] wb_tran_addr2 ;
288 output [31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] wb_tran_addr3 ;
289 output [31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] wb_tran_addr4 ;
290 output [31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] wb_tran_addr5 ;
291 output [2 : 0] wb_img_ctrl0 ;
292 output [2 : 0] wb_img_ctrl1 ;
293 output [2 : 0] wb_img_ctrl2 ;
294 output [2 : 0] wb_img_ctrl3 ;
295 output [2 : 0] wb_img_ctrl4 ;
296 output [2 : 0] wb_img_ctrl5 ;
297 // WISHBONE input to wb error control and status register, error address and error data registers
298 input [3 : 0] wb_error_be ;
299 input [3 : 0] wb_error_bc ;
300 input wb_error_rty_exp ;
301 input wb_error_es ;
302 input wb_error_sig ;
303 input [31 : 0] wb_error_addr ;
304 input [31 : 0] wb_error_data ;
305 // GENERAL output from conf. cycle generation register & int. control register
306 output [23 : 0] config_addr ;
307 output icr_soft_res ;
308 output int_out ;
309 // GENERAL input to interrupt status register
310 input isr_sys_err_int ;
311 input isr_par_err_int ;
312 input isr_int_prop ;
313
314 output pci_init_complete_out ;
315 output wb_init_complete_out ;
316
317 `ifdef PCI_CPCI_HS_IMPLEMENT
318 output pci_cpci_hs_enum_oe_o ;
319 output pci_cpci_hs_led_oe_o ;
320 input pci_cpci_hs_es_i ;
321
322 reg pci_cpci_hs_enum_oe_o ;
323 reg pci_cpci_hs_led_oe_o ;
324
325 // set the hot swap ejector switch debounce counter width
326 // it is only 4 for simulation purposes
327 `ifdef PCI_CPCI_SIM
328
329 parameter hs_es_cnt_width = 4 ;
330
331 `else
332
333 `ifdef PCI33
334
335 parameter hs_es_cnt_width = 16 ;
336
337 `endif
338
339 `ifdef PCI66
340
341 parameter hs_es_cnt_width = 17 ;
342
343 `endif
344 `endif
345
346 `endif
347
348 `ifdef PCI_SPOCI
349 output spoci_scl_oe_o ;
350 input spoci_sda_i ;
351 output spoci_sda_oe_o ;
352
353 reg spoci_cs_nack,
354 spoci_cs_write,
355 spoci_cs_read;
356
357 reg [10: 0] spoci_cs_adr ;
358 reg [ 7: 0] spoci_cs_dat ;
359 `endif
360
361 /*###########################################################################################################
362 /////////////////////////////////////////////////////////////////////////////////////////////////////////////
363 REGISTERS definition
364 ====================
365 /////////////////////////////////////////////////////////////////////////////////////////////////////////////
366 ###########################################################################################################*/
367
368 // Decoded Register Select signals for writting (only one address decoder)
369 reg [56 : 0] w_reg_select_dec ;
370
371 /*###########################################################################################################
372 -------------------------------------------------------------------------------------------------------------
373 PCI CONFIGURATION SPACE HEADER (type 00h) registers
374
375 BIST and some other registers are not implemented and therefor written in correct
376 place with comment line. There are also some registers with NOT all bits implemented and therefor uses
377 _bitX or _bitX2_X1 to sign which bit or range of bits are implemented.
378 Some special cases and examples are described below!
379 -------------------------------------------------------------------------------------------------------------
380 ###########################################################################################################*/
381
382 /*-----------------------------------------------------------------------------------------------------------
383 [000h-00Ch] First 4 DWORDs (32-bit) of PCI configuration header - the same regardless of the HEADER type !
384 r_ prefix is a sign for read only registers
385 Vendor_ID is an ID for a specific vendor defined by PCI_SIG - 2321h does not belong to anyone (e.g.
386 Xilinx's Vendor_ID is 10EEh and Altera's Vendor_ID is 1172h). Device_ID and Revision_ID should be used
387 together by application. Class_Code has 3 bytes to define BASE class (06h for PCI Bridge), SUB class
388 (00h for HOST type, 80h for Other Bridge type) and Interface type (00h for normal).
389 -----------------------------------------------------------------------------------------------------------*/
390 reg [15: 0] r_vendor_id ;
391 reg [15: 0] r_device_id ;
392 reg [15: 0] r_subsys_vendor_id ;
393 reg [15: 0] r_subsys_id ;
394
395 reg command_bit8 ;
396 reg command_bit6 ;
397 reg [2 : 0] command_bit2_0 ;
398 reg [15 : 11] status_bit15_11 ;
399 parameter r_status_bit10_9 = 2'b01 ; // 2'b01 means MEDIUM devsel timing !!!
400 reg status_bit8 ;
401 parameter r_status_bit7 = 1'b1 ; // fast back-to-back capable response !!!
402 parameter r_status_bit5 = `HEADER_66MHz ; // 1'b0 indicates 33 MHz capable !!!
403
404 `ifdef PCI_CPCI_HS_IMPLEMENT
405 wire r_status_bit4 = 1 ;
406 reg hs_ins ;
407 reg hs_ext ;
408 wire [ 1: 0] hs_pi = 2'b00 ;
409 reg hs_loo ;
410 reg hs_eim ;
411 wire [ 7: 0] hs_cap_id = 8'h06 ;
412 reg hs_ins_armed ;
413 reg hs_ext_armed ;
414 `else
415 wire r_status_bit4 = 0 ;
416 `endif
417
418 reg [ 7: 0] r_revision_id ;
419
420 `ifdef HOST
421 parameter r_class_code = 24'h06_00_00 ;
422 `else
423 parameter r_class_code = 24'h06_80_00 ;
424 `endif
425 reg [7 : 0] cache_line_size_reg ;
426 reg [7 : 0] latency_timer ;
427 parameter r_header_type = 8'h00 ;
428 // REG bist NOT implemented !!!
429
430 /*-----------------------------------------------------------------------------------------------------------
431 [010h-03Ch] all other DWORDs (32-bit) of PCI configuration header - only for HEADER type 00h !
432 r_ prefix is a sign for read only registers
433 BASE_ADDRESS_REGISTERS are the same as ones in the PCI Target configuration registers section. They
434 are duplicated and therefor defined just ones and used with the same name as written below. If
435 IMAGEx is NOT defined there is only parameter image_X assigned to '0' and this parameter is used
436 elsewhere in the code. This parameter is defined in the INTERNAL SIGNALS part !!!
437 Interrupt_Pin value 8'h01 is used for INT_A pin used.
438 MIN_GNT and MAX_LAT are used for device's desired values for Latency Timer value. The value in boath
439 registers specifies a period of time in units of 1/4 microsecond. ZERO indicates that there are no
440 major requirements for the settings of Latency Timer.
441 MIN_GNT specifieshow how long a burst period the device needs at 33MHz. MAX_LAT specifies how often
442 the device needs to gain access to the PCI bus. Values are choosen assuming that the target does not
443 insert any wait states. Follow the expamle of settings for simple display card.
444 If we use 64 (32-bit) FIFO locations for one burst then we need 8 x 1/4 microsecond periods at 33MHz
445 clock rate => MIN_GNT = 08h ! Resolution is 1024 x 768 (= 786432 pixels for one frame) with 16-bit
446 color mode. We can transfere 2 16-bit pixels in one FIFO location. From that we calculate, that for
447 one frame we need 6144 burst transferes in 1/25 second. So we need one burst every 6,51 microsecond
448 and that is 26 x 1/4 microsecond or 1Ah x 1/4 microsecond => MAX_LAT = 1Ah !
449 -----------------------------------------------------------------------------------------------------------*/
450 // REG x 6 base_address_register_X IMPLEMENTED as pci_ba_X !!!
451 // REG r_cardbus_cis_pointer NOT implemented !!!
452 // REG r_subsystem_vendor_id NOT implemented !!!
453 // REG r_subsystem_id NOT implemented !!!
454 // REG r_expansion_rom_base_address NOT implemented !!!
455 // REG r_cap_list_pointer NOT implemented !!!
456 reg [7 : 0] interrupt_line ;
457 parameter r_interrupt_pin = 8'h01 ;
458 reg [7 : 0] r_min_gnt ;
459 reg [7 : 0] r_max_lat ;
460
461 /*###########################################################################################################
462 -------------------------------------------------------------------------------------------------------------
463 PCI Target configuration registers
464 There are also some registers with NOT all bits implemented and therefor uses _bitX or _bitX2_X1 to
465 sign which bit or range of bits are implemented. Some special cases and examples are described below!
466 -------------------------------------------------------------------------------------------------------------
467 ###########################################################################################################*/
468
469 /*-----------------------------------------------------------------------------------------------------------
470 [100h-168h]
471 Depending on defines (PCI_IMAGE1 or .. or PCI_IMAGE5 or (PCI_IMAGE0 and HOST)) in constants.v file,
472 there are registers corresponding to each IMAGE defined to REG and parameter pci_image_X assigned to '1'.
473 The maximum number of images is "6". By default there are first two images used and the first (PCI_IMAGE0)
474 is assigned to Configuration space! With a 'define' PCI_IMAGEx you choose the number of used PCI IMAGES
475 in a bridge without PCI_IMAGE0 (e.g. PCI_IMAGE3 tells, that PCI_IMAGE1, PCI_IMAGE2 and PCI_IMAGE3 are
476 used for mapping the space from WB to PCI. Offcourse, PCI_IMAGE0 is assigned to Configuration space).
477 That leave us PCI_IMAGE5 as the maximum number of images.
478 There is one exeption, when the core is implemented as HOST. If so, then the PCI specification allowes
479 the Configuration space NOT to be visible on the PCI bus. With `define PCI_IMAGE0 (and `define HOST), we
480 assign PCI_IMAGE0 to normal WB to PCI image and not to configuration space!
481
482 When error occurs, PCI ERR_ADDR and ERR_DATA registers stores address and data on the bus that
483 caused error. While ERR_CS register stores Byte Enables and Bus Command in the MSByte. In bits 10
484 and 8 it reports Retry Counter Expired (for posted writes), Error Source (Master Abort) and Error
485 Report Signal (signals that error has occured) respectively. With bit 0 we enable Error Reporting
486 mechanism.
487 -----------------------------------------------------------------------------------------------------------*/
488 `ifdef HOST
489 `ifdef NO_CNF_IMAGE
490 `ifdef PCI_IMAGE0 // if PCI bridge is HOST and IMAGE0 is assigned as general image space
491 reg [31 : 8] pci_ba0_bit31_8 ;
492 reg [2 : 1] pci_img_ctrl0_bit2_1 ;
493 reg pci_ba0_bit0 ;
494 reg [31 : 8] pci_am0 ;
495 reg [31 : 8] pci_ta0 ;
496 `else // if PCI bridge is HOST and IMAGE0 is not used
497 wire [31 : 8] pci_ba0_bit31_8 = 24'h0000_00 ; // NO base address needed
498 wire [2 : 1] pci_img_ctrl0_bit2_1 = 2'b00 ; // NO addr.transl. and pre-fetch
499 wire pci_ba0_bit0 = 0 ; // config. space is MEMORY space
500 wire [31 : 8] pci_am0 = 24'h0000_00 ; // NO address mask needed
501 wire [31 : 8] pci_ta0 = 24'h0000_00 ; // NO address translation needed
502 `endif
503 `else // if PCI bridge is HOST and IMAGE0 is assigned to PCI configuration space
504 reg [31 : 8] pci_ba0_bit31_8 ;
505 wire [2 : 1] pci_img_ctrl0_bit2_1 = 2'b00 ; // NO pre-fetch and read line support
506 wire pci_ba0_bit0 = 0 ; // config. space is MEMORY space
507 wire [31 : 8] pci_am0 = 24'hFFFF_F0 ; // address mask for configuration image always 20'hffff_f
508 wire [31 : 8] pci_ta0 = 24'h0000_00 ; // NO address translation needed
509 `endif
510 `endif
511
512 `ifdef GUEST // if PCI bridge is GUEST, then IMAGE0 is assigned to PCI configuration space
513 reg [31 : 8] pci_ba0_bit31_8 ;
514 wire [2 : 1] pci_img_ctrl0_bit2_1 = 2'b00 ; // NO addr.transl. and pre-fetch
515 wire pci_ba0_bit0 = 0 ; // config. space is MEMORY space
516 wire [31 : 8] pci_am0 = 24'hffff_f0 ; // address mask for configuration image always 24'hffff_f0 - 4KB mem image
517 wire [31 : 8] pci_ta0 = 24'h0000_00 ; // NO address translation needed
518 `endif
519
520 // IMAGE1 is included by default, meanwhile other IMAGEs are optional !!!
521 reg [2 : 1] pci_img_ctrl1_bit2_1 ;
522 reg [31 : 8] pci_ba1_bit31_8 ;
523 `ifdef HOST
524 reg pci_ba1_bit0 ;
525 `else
526 wire pci_ba1_bit0 = `PCI_BA1_MEM_IO ;
527 `endif
528 reg [31 : 8] pci_am1 ;
529 reg [31 : 8] pci_ta1 ;
530 `ifdef PCI_IMAGE2
531 reg [2 : 1] pci_img_ctrl2_bit2_1 ;
532 reg [31 : 8] pci_ba2_bit31_8 ;
533 `ifdef HOST
534 reg pci_ba2_bit0 ;
535 `else
536 wire pci_ba2_bit0 = `PCI_BA2_MEM_IO ;
537 `endif
538 reg [31 : 8] pci_am2 ;
539 reg [31 : 8] pci_ta2 ;
540 `else
541 wire [2 : 1] pci_img_ctrl2_bit2_1 = 2'b00 ;
542 wire [31 : 8] pci_ba2_bit31_8 = 24'h0000_00 ;
543 wire pci_ba2_bit0 = 1'b0 ;
544 wire [31 : 8] pci_am2 = 24'h0000_00 ;
545 wire [31 : 8] pci_ta2 = 24'h0000_00 ;
546 `endif
547 `ifdef PCI_IMAGE3
548 reg [2 : 1] pci_img_ctrl3_bit2_1 ;
549 reg [31 : 8] pci_ba3_bit31_8 ;
550 `ifdef HOST
551 reg pci_ba3_bit0 ;
552 `else
553 wire pci_ba3_bit0 = `PCI_BA3_MEM_IO ;
554 `endif
555 reg [31 : 8] pci_am3 ;
556 reg [31 : 8] pci_ta3 ;
557 `else
558 wire [2 : 1] pci_img_ctrl3_bit2_1 = 2'b00 ;
559 wire [31 : 8] pci_ba3_bit31_8 = 24'h0000_00 ;
560 wire pci_ba3_bit0 = 1'b0 ;
561 wire [31 : 8] pci_am3 = 24'h0000_00 ;
562 wire [31 : 8] pci_ta3 = 24'h0000_00 ;
563 `endif
564 `ifdef PCI_IMAGE4
565 reg [2 : 1] pci_img_ctrl4_bit2_1 ;
566 reg [31 : 8] pci_ba4_bit31_8 ;
567 `ifdef HOST
568 reg pci_ba4_bit0 ;
569 `else
570 wire pci_ba4_bit0 = `PCI_BA4_MEM_IO ;
571 `endif
572 reg [31 : 8] pci_am4 ;
573 reg [31 : 8] pci_ta4 ;
574 `else
575 wire [2 : 1] pci_img_ctrl4_bit2_1 = 2'b00 ;
576 wire [31 : 8] pci_ba4_bit31_8 = 24'h0000_00 ;
577 wire pci_ba4_bit0 = 1'b0 ;
578 wire [31 : 8] pci_am4 = 24'h0000_00 ;
579 wire [31 : 8] pci_ta4 = 24'h0000_00 ;
580 `endif
581 `ifdef PCI_IMAGE5
582 reg [2 : 1] pci_img_ctrl5_bit2_1 ;
583 reg [31 : 8] pci_ba5_bit31_8 ;
584 `ifdef HOST
585 reg pci_ba5_bit0 ;
586 `else
587 wire pci_ba5_bit0 = `PCI_BA5_MEM_IO ;
588 `endif
589 reg [31 : 8] pci_am5 ;
590 reg [31 : 8] pci_ta5 ;
591 `else
592 wire [2 : 1] pci_img_ctrl5_bit2_1 = 2'b00 ;
593 wire [31 : 8] pci_ba5_bit31_8 = 24'h0000_00 ;
594 wire pci_ba5_bit0 = 1'b0 ;
595 wire [31 : 8] pci_am5 = 24'h0000_00 ;
596 wire [31 : 8] pci_ta5 = 24'h0000_00 ;
597 `endif
598 reg [31 : 24] pci_err_cs_bit31_24 ;
599 reg pci_err_cs_bit10 ;
600 reg pci_err_cs_bit9 ;
601 reg pci_err_cs_bit8 ;
602 reg pci_err_cs_bit0 ;
603 reg [31 : 0] pci_err_addr ;
604 reg [31 : 0] pci_err_data ;
605
606
607 /*###########################################################################################################
608 -------------------------------------------------------------------------------------------------------------
609 WISHBONE Slave configuration registers
610 There are also some registers with NOT all bits implemented and therefor uses _bitX or _bitX2_X1 to
611 sign which bit or range of bits are implemented. Some special cases and examples are described below!
612 -------------------------------------------------------------------------------------------------------------
613 ###########################################################################################################*/
614
615 /*-----------------------------------------------------------------------------------------------------------
616 [800h-85Ch]
617 Depending on defines (WB_IMAGE1 or .. or WB_IMAGE4 or WB_IMAGE5) in constants.v file, there are
618 registers corresponding to each IMAGE defined to REG and parameter wb_image_X assigned to '1'.
619 The maximum number of images is "6". By default there are first two images used and the first (WB_IMAGE0)
620 is assigned to Configuration space! With a 'define' WB_IMAGEx you choose the number of used WB IMAGES in
621 a bridge without WB_IMAGE0 (e.g. WB_IMAGE3 tells, that WB_IMAGE1, WB_IMAGE2 and WB_IMAGE3 are used for
622 mapping the space from PCI to WB. Offcourse, WB_IMAGE0 is assigned to Configuration space). That leave
623 us WB_IMAGE5 as the maximum number of images.
624
625 When error occurs, WISHBONE ERR_ADDR and ERR_DATA registers stores address and data on the bus that
626 caused error. While ERR_CS register stores Byte Enables and Bus Command in the MSByte. In bits 10, 9
627 and 8 it reports Retry Counter Expired (for posted writes), Error Source (Master Abort) and Error
628 Report Signal (signals that error has occured) respectively. With bit 0 we enable Error Reporting
629 mechanism.
630 -----------------------------------------------------------------------------------------------------------*/
631 // WB_IMAGE0 is always assigned to config. space or is not used
632 wire [2 : 0] wb_img_ctrl0_bit2_0 = 3'b000 ; // NO addr.transl., pre-fetch and read-line
633 wire [31 : 12] wb_ba0_bit31_12 = `WB_CONFIGURATION_BASE ;
634 wire wb_ba0_bit0 = 0 ; // config. space is MEMORY space
635 wire [31 : 12] wb_am0 = `WB_AM0 ; // 4KBytes of configuration space is minimum
636 wire [31 : 12] wb_ta0 = 20'h0000_0 ; // NO address translation needed
637 // WB_IMAGE1 is included by default meanwhile others are optional !
638 reg [2 : 0] wb_img_ctrl1_bit2_0 ;
639 reg [31 : 12] wb_ba1_bit31_12 ;
640 reg wb_ba1_bit0 ;
641 reg [31 : 12] wb_am1 ;
642 reg [31 : 12] wb_ta1 ;
643 `ifdef WB_IMAGE2
644 reg [2 : 0] wb_img_ctrl2_bit2_0 ;
645 reg [31 : 12] wb_ba2_bit31_12 ;
646 reg wb_ba2_bit0 ;
647 reg [31 : 12] wb_am2 ;
648 reg [31 : 12] wb_ta2 ;
649 `else
650 wire [2 : 0] wb_img_ctrl2_bit2_0 = 3'b000 ;
651 wire [31 : 12] wb_ba2_bit31_12 = 20'h0000_0 ;
652 wire wb_ba2_bit0 = 1'b0 ;
653 wire [31 : 12] wb_am2 = 20'h0000_0 ;
654 wire [31 : 12] wb_ta2 = 20'h0000_0 ;
655 `endif
656 `ifdef WB_IMAGE3
657 reg [2 : 0] wb_img_ctrl3_bit2_0 ;
658 reg [31 : 12] wb_ba3_bit31_12 ;
659 reg wb_ba3_bit0 ;
660 reg [31 : 12] wb_am3 ;
661 reg [31 : 12] wb_ta3 ;
662 `else
663 wire [2 : 0] wb_img_ctrl3_bit2_0 = 3'b000 ;
664 wire [31 : 12] wb_ba3_bit31_12 = 20'h0000_0 ;
665 wire wb_ba3_bit0 = 1'b0 ;
666 wire [31 : 12] wb_am3 = 20'h0000_0 ;
667 wire [31 : 12] wb_ta3 = 20'h0000_0 ;
668 `endif
669 `ifdef WB_IMAGE4
670 reg [2 : 0] wb_img_ctrl4_bit2_0 ;
671 reg [31 : 12] wb_ba4_bit31_12 ;
672 reg wb_ba4_bit0 ;
673 reg [31 : 12] wb_am4 ;
674 reg [31 : 12] wb_ta4 ;
675 `else
676 wire [2 : 0] wb_img_ctrl4_bit2_0 = 3'b000 ;
677 wire [31 : 12] wb_ba4_bit31_12 = 20'h0000_0 ;
678 wire wb_ba4_bit0 = 1'b0 ;
679 wire [31 : 12] wb_am4 = 20'h0000_0 ;
680 wire [31 : 12] wb_ta4 = 20'h0000_0 ;
681 `endif
682 `ifdef WB_IMAGE5
683 reg [2 : 0] wb_img_ctrl5_bit2_0 ;
684 reg [31 : 12] wb_ba5_bit31_12 ;
685 reg wb_ba5_bit0 ;
686 reg [31 : 12] wb_am5 ;
687 reg [31 : 12] wb_ta5 ;
688 `else
689 wire [2 : 0] wb_img_ctrl5_bit2_0 = 3'b000 ;
690 wire [31 : 12] wb_ba5_bit31_12 = 20'h0000_0 ;
691 wire wb_ba5_bit0 = 1'b0 ;
692 wire [31 : 12] wb_am5 = 20'h0000_0 ;
693 wire [31 : 12] wb_ta5 = 20'h0000_0 ;
694 `endif
695 reg [31 : 24] wb_err_cs_bit31_24 ;
696 /* reg wb_err_cs_bit10 ;*/
697 reg wb_err_cs_bit9 ;
698 reg wb_err_cs_bit8 ;
699 reg wb_err_cs_bit0 ;
700 reg [31 : 0] wb_err_addr ;
701 reg [31 : 0] wb_err_data ;
702
703
704 /*###########################################################################################################
705 -------------------------------------------------------------------------------------------------------------
706 Configuration Cycle address register
707 There are also some registers with NOT all bits implemented and therefor uses _bitX or _bitX2_X1 to
708 sign which bit or range of bits are implemented.
709 -------------------------------------------------------------------------------------------------------------
710 ###########################################################################################################*/
711
712 /*-----------------------------------------------------------------------------------------------------------
713 [860h-868h]
714 PCI bridge must ignore Type 1 configuration cycles (Master Abort) since they are used for PCI to PCI
715 bridges. This is single function device, that means responding on configuration cycles to all functions
716 (or responding only to function 0). Configuration address register for generating configuration cycles
717 is prepared for all options (it includes Bus Number, Device, Function, Offset and Type).
718 Interrupt acknowledge register stores interrupt vector data returned during Interrupt Acknowledge cycle.
719 -----------------------------------------------------------------------------------------------------------*/
720 `ifdef HOST
721 reg [23 : 2] cnf_addr_bit23_2 ;
722 reg cnf_addr_bit0 ;
723 `else // GUEST
724 wire [23 : 2] cnf_addr_bit23_2 = 22'h0 ;
725 wire cnf_addr_bit0 = 1'b0 ;
726 `endif
727 // reg [31 : 0] cnf_data ; IMPLEMENTED elsewhere !!!!!
728 // reg [31 : 0] int_ack ; IMPLEMENTED elsewhere !!!!!
729
730
731 /*###########################################################################################################
732 -------------------------------------------------------------------------------------------------------------
733 General Interrupt registers
734 There are also some registers with NOT all bits implemented and therefor uses _bitX or _bitX2_X1 to
735 sign which bit or range of bits are implemented.
736 -------------------------------------------------------------------------------------------------------------
737 ###########################################################################################################*/
738
739 /*-----------------------------------------------------------------------------------------------------------
740 [FF8h-FFCh]
741 Bit 31 in the Interrupt Control register is set by software and used to generate SOFT RESET. Other 4
742 bits are used to enable interrupt generations.
743 5 LSbits in the Interrupt Status register are indicating System Error Int, Parity Error Int, PCI & WB
744 Error Int and Inerrupt respecively. System and Parity errors are implented only in HOST bridge
745 implementations!
746 -----------------------------------------------------------------------------------------------------------*/
747 reg icr_bit31 ;
748 `ifdef HOST
749 reg [4 : 3] icr_bit4_3 ;
750 reg [4 : 3] isr_bit4_3 ;
751 reg [2 : 0] icr_bit2_0 ;
752 reg [2 : 0] isr_bit2_0 ;
753 `else // GUEST
754 wire [4 : 3] icr_bit4_3 = 2'h0 ;
755 wire [4 : 3] isr_bit4_3 = 2'h0 ;
756 reg [2 : 0] icr_bit2_0 ;
757 reg [2 : 0] isr_bit2_0 ;
758 `endif
759
760 /*###########################################################################################################
761 -------------------------------------------------------------------------------------------------------------
762 Initialization complete identifier
763 When using I2C or similar initialisation mechanism,
764 the bridge must not respond to transaction requests on PCI bus,
765 not even to configuration cycles.
766 Therefore, only when init_complete is set, the bridge starts
767 participating on the PCI bus as an active device.
768 Two additional flip flops are also provided for GUEST implementation,
769 to synchronize to the pci clock after PCI reset is asynchronously de-asserted.
770 -------------------------------------------------------------------------------------------------------------
771 ###########################################################################################################*/
772
773 `ifdef GUEST
774
775 reg rst_inactive_sync ;
776 reg rst_inactive ;
777
778 `else
779
780 wire rst_inactive = 1'b1 ;
781
782 `endif
783
784 reg init_complete ;
785
786 wire sync_init_complete ;
787
788 `ifdef HOST
789 assign wb_init_complete_out = init_complete ;
790
791 pci_synchronizer_flop #(1, 0) i_pci_init_complete_sync
792 (
793 .data_in ( init_complete ),
794 .clk_out ( pci_clk ),
795 .sync_data_out ( sync_init_complete ),
796 .async_reset ( reset )
797 );
798
799 reg pci_init_complete_out ;
800
801 always@(posedge pci_clk or posedge reset)
802 begin
803 if (reset)
804 pci_init_complete_out <= 1'b0 ;
805 else
806 pci_init_complete_out <= sync_init_complete ;
807 end
808
809 `endif
810
811 `ifdef GUEST
812
813 assign pci_init_complete_out = init_complete ;
814
815 pci_synchronizer_flop #(1, 0) i_wb_init_complete_sync
816 (
817 .data_in ( init_complete ),
818 .clk_out ( wb_clk ),
819 .sync_data_out ( sync_init_complete ),
820 .async_reset ( reset )
821 );
822
823 reg wb_init_complete_out ;
824
825 always@(posedge wb_clk or posedge reset)
826 begin
827 if (reset)
828 wb_init_complete_out <= 1'b0 ;
829 else
830 wb_init_complete_out <= sync_init_complete ;
831 end
832
833 `endif
834
835 /*###########################################################################################################
836 -------------------------------------------------------------------------------------------------------------
837
838
839 -----------------------------------------------------------------------------------------------------------*/
840
841 `ifdef NO_CNF_IMAGE // if IMAGE0 is assigned as general image space
842
843 assign r_conf_data_out = 32'h0000_0000 ;
844
845 `else
846
847 always@(r_conf_address_in or
848 status_bit15_11 or status_bit8 or r_status_bit4 or command_bit8 or command_bit6 or command_bit2_0 or
849 latency_timer or cache_line_size_reg or r_vendor_id or r_device_id or r_revision_id or
850 r_subsys_vendor_id or r_subsys_id or r_max_lat or r_min_gnt or
851 pci_ba0_bit31_8 or
852 pci_img_ctrl0_bit2_1 or pci_am0 or pci_ta0 or pci_ba0_bit0 or
853 pci_img_ctrl1_bit2_1 or pci_am1 or pci_ta1 or pci_ba1_bit31_8 or pci_ba1_bit0 or
854 pci_img_ctrl2_bit2_1 or pci_am2 or pci_ta2 or pci_ba2_bit31_8 or pci_ba2_bit0 or
855 pci_img_ctrl3_bit2_1 or pci_am3 or pci_ta3 or pci_ba3_bit31_8 or pci_ba3_bit0 or
856 pci_img_ctrl4_bit2_1 or pci_am4 or pci_ta4 or pci_ba4_bit31_8 or pci_ba4_bit0 or
857 pci_img_ctrl5_bit2_1 or pci_am5 or pci_ta5 or pci_ba5_bit31_8 or pci_ba5_bit0 or
858 interrupt_line or
859 pci_err_cs_bit31_24 or pci_err_cs_bit10 or pci_err_cs_bit9 or pci_err_cs_bit8 or pci_err_cs_bit0 or
860 pci_err_addr or pci_err_data or
861 wb_ba0_bit31_12 or wb_ba0_bit0 or
862 wb_img_ctrl1_bit2_0 or wb_ba1_bit31_12 or wb_ba1_bit0 or wb_am1 or wb_ta1 or
863 wb_img_ctrl2_bit2_0 or wb_ba2_bit31_12 or wb_ba2_bit0 or wb_am2 or wb_ta2 or
864 wb_img_ctrl3_bit2_0 or wb_ba3_bit31_12 or wb_ba3_bit0 or wb_am3 or wb_ta3 or
865 wb_img_ctrl4_bit2_0 or wb_ba4_bit31_12 or wb_ba4_bit0 or wb_am4 or wb_ta4 or
866 wb_img_ctrl5_bit2_0 or wb_ba5_bit31_12 or wb_ba5_bit0 or wb_am5 or wb_ta5 or
867 wb_err_cs_bit31_24 or /*wb_err_cs_bit10 or*/ wb_err_cs_bit9 or wb_err_cs_bit8 or wb_err_cs_bit0 or
868 wb_err_addr or wb_err_data or
869 cnf_addr_bit23_2 or cnf_addr_bit0 or icr_bit31 or icr_bit4_3 or icr_bit2_0 or isr_bit4_3 or isr_bit2_0
870
871 `ifdef PCI_CPCI_HS_IMPLEMENT
872 or hs_ins or hs_ext or hs_pi or hs_loo or hs_eim or hs_cap_id
873 `endif
874
875 `ifdef PCI_SPOCI
876 or spoci_cs_nack or spoci_cs_write or spoci_cs_read or spoci_cs_adr or spoci_cs_dat
877 `endif
878 )
879 begin
880 case (r_conf_address_in[9:2])
881 // PCI header - configuration space
882 8'h0: r_conf_data_out = { r_device_id, r_vendor_id } ;
883 8'h1: r_conf_data_out = { status_bit15_11, r_status_bit10_9, status_bit8, r_status_bit7, 1'h0, r_status_bit5, r_status_bit4,
884 4'h0, 7'h00, command_bit8, 1'h0, command_bit6, 3'h0, command_bit2_0 } ;
885 8'h2: r_conf_data_out = { r_class_code, r_revision_id } ;
886 8'h3: r_conf_data_out = { 8'h00, r_header_type, latency_timer, cache_line_size_reg } ;
887 8'h4:
888 begin
889 `ifdef HOST
890 `ifdef NO_CNF_IMAGE
891 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba0_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
892 pci_am0[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
893 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
894 r_conf_data_out[0] = pci_ba0_bit0 & pci_am0[31];
895 `else
896 r_conf_data_out[31:12] = pci_ba0_bit31_8[31:12] ;
897 r_conf_data_out[11: 0] = 12'h000 ;
898 `endif
899 `endif
900
901 `ifdef GUEST
902 r_conf_data_out[31:12] = pci_ba0_bit31_8[31:12] ;
903 r_conf_data_out[11: 0] = 12'h000 ;
904 `endif
905 end
906 8'h5:
907 begin
908 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba1_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
909 pci_am1[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
910 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
911 r_conf_data_out[0] = pci_ba1_bit0 & pci_am1[31];
912 end
913 8'h6:
914 begin
915 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba2_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
916 pci_am2[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
917 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
918 r_conf_data_out[0] = pci_ba2_bit0 & pci_am2[31];
919 end
920 8'h7:
921 begin
922 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba3_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
923 pci_am3[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
924 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
925 r_conf_data_out[0] = pci_ba3_bit0 & pci_am3[31];
926 end
927 8'h8:
928 begin
929 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba4_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
930 pci_am4[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
931 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
932 r_conf_data_out[0] = pci_ba4_bit0 & pci_am4[31];
933 end
934 8'h9:
935 begin
936 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba5_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
937 pci_am5[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
938 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
939 r_conf_data_out[0] = pci_ba5_bit0 & pci_am5[31];
940 end
941 8'hB:
942 begin
943 r_conf_data_out = {r_subsys_id, r_subsys_vendor_id} ;
944 end
945 `ifdef PCI_CPCI_HS_IMPLEMENT
946 8'hD:
947 begin
948 r_conf_data_out = {24'h0000_00, `PCI_CAP_PTR_VAL} ;
949 end
950 `endif
951 8'hf: r_conf_data_out = { r_max_lat, r_min_gnt, r_interrupt_pin, interrupt_line } ;
952 `ifdef PCI_CPCI_HS_IMPLEMENT
953 (`PCI_CAP_PTR_VAL >> 2):
954 begin
955 r_conf_data_out = {8'h00, hs_ins, hs_ext, hs_pi, hs_loo, 1'b0, hs_eim, 1'b0, 8'h00, hs_cap_id} ;
956 end
957 `endif
958 // PCI target - configuration space
959 {2'b01, `P_IMG_CTRL0_ADDR}: r_conf_data_out = { 29'h00000000, pci_img_ctrl0_bit2_1, 1'h0 } ;
960 {2'b01, `P_BA0_ADDR} :
961 begin
962 `ifdef HOST
963 `ifdef NO_CNF_IMAGE
964 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba0_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
965 pci_am0[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
966 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
967 r_conf_data_out[0] = pci_ba0_bit0 & pci_am0[31];
968 `else
969 r_conf_data_out[31:12] = pci_ba0_bit31_8[31:12] ;
970 r_conf_data_out[11: 0] = 12'h000 ;
971 `endif
972 `endif
973
974 `ifdef GUEST
975 r_conf_data_out[31:12] = pci_ba0_bit31_8[31:12] ;
976 r_conf_data_out[11: 0] = 12'h000 ;
977 `endif
978 end
979 {2'b01, `P_AM0_ADDR}:
980 begin
981 `ifdef HOST
982 `ifdef NO_CNF_IMAGE
983 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_am0[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
984 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
985 `else
986 r_conf_data_out[31:12] = pci_am0[31:12] ;
987 r_conf_data_out[11: 0] = 12'h000 ;
988 `endif
989 `endif
990
991 `ifdef GUEST
992 r_conf_data_out[31:12] = pci_am0[31:12] ;
993 r_conf_data_out[11: 0] = 12'h000 ;
994 `endif
995 end
996 {2'b01, `P_TA0_ADDR}:
997 begin
998 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ta0[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
999 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1000 end
1001 {2'b01, `P_IMG_CTRL1_ADDR}: r_conf_data_out = { 29'h00000000, pci_img_ctrl1_bit2_1, 1'h0 } ;
1002 {2'b01, `P_BA1_ADDR}:
1003 begin
1004 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba1_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
1005 pci_am1[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1006 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1007 r_conf_data_out[0] = pci_ba1_bit0 & pci_am1[31];
1008 end
1009 {2'b01, `P_AM1_ADDR}:
1010 begin
1011 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_am1[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1012 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1013 end
1014 {2'b01, `P_TA1_ADDR}:
1015 begin
1016 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ta1[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1017 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1018 end
1019 {2'b01, `P_IMG_CTRL2_ADDR}: r_conf_data_out = { 29'h00000000, pci_img_ctrl2_bit2_1, 1'h0 } ;
1020 {2'b01, `P_BA2_ADDR}:
1021 begin
1022 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba2_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
1023 pci_am2[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1024 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1025 r_conf_data_out[0] = pci_ba2_bit0 & pci_am2[31];
1026 end
1027 {2'b01, `P_AM2_ADDR}:
1028 begin
1029 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_am2[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1030 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1031 end
1032 {2'b01, `P_TA2_ADDR}:
1033 begin
1034 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ta2[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1035 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1036 end
1037 {2'b01, `P_IMG_CTRL3_ADDR}: r_conf_data_out = { 29'h00000000, pci_img_ctrl3_bit2_1, 1'h0 } ;
1038 {2'b01, `P_BA3_ADDR}:
1039 begin
1040 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba3_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
1041 pci_am3[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1042 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1043 r_conf_data_out[0] = pci_ba3_bit0 & pci_am3[31];
1044 end
1045 {2'b01, `P_AM3_ADDR}:
1046 begin
1047 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_am3[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1048 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1049 end
1050 {2'b01, `P_TA3_ADDR}:
1051 begin
1052 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ta3[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1053 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1054 end
1055 {2'b01, `P_IMG_CTRL4_ADDR}: r_conf_data_out = { 29'h00000000, pci_img_ctrl4_bit2_1, 1'h0 } ;
1056 {2'b01, `P_BA4_ADDR}:
1057 begin
1058 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba4_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
1059 pci_am4[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1060 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1061 r_conf_data_out[0] = pci_ba4_bit0 & pci_am4[31];
1062 end
1063 {2'b01, `P_AM4_ADDR}:
1064 begin
1065 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_am4[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1066 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1067 end
1068 {2'b01, `P_TA4_ADDR}:
1069 begin
1070 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ta4[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1071 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1072 end
1073 {2'b01, `P_IMG_CTRL5_ADDR}: r_conf_data_out = { 29'h00000000, pci_img_ctrl5_bit2_1, 1'h0 } ;
1074 {2'b01, `P_BA5_ADDR}:
1075 begin
1076 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba5_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
1077 pci_am5[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1078 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1079 r_conf_data_out[0] = pci_ba5_bit0 & pci_am5[31];
1080 end
1081 {2'b01, `P_AM5_ADDR}:
1082 begin
1083 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_am5[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1084 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1085 end
1086 {2'b01, `P_TA5_ADDR}:
1087 begin
1088 r_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ta5[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1089 r_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1090 end
1091 {2'b01, `P_ERR_CS_ADDR}: r_conf_data_out = { pci_err_cs_bit31_24, 13'h0000, pci_err_cs_bit10, pci_err_cs_bit9,
1092 pci_err_cs_bit8, 7'h00, pci_err_cs_bit0 } ;
1093 {2'b01, `P_ERR_ADDR_ADDR}: r_conf_data_out = pci_err_addr ;
1094 {2'b01, `P_ERR_DATA_ADDR}: r_conf_data_out = pci_err_data ;
1095 // WB slave - configuration space
1096 {2'b01, `WB_CONF_SPC_BAR_ADDR}: r_conf_data_out = { wb_ba0_bit31_12, 11'h000, wb_ba0_bit0 } ;
1097 {2'b01, `W_IMG_CTRL1_ADDR}: r_conf_data_out = { 29'h00000000, wb_img_ctrl1_bit2_0 } ;
1098 {2'b01, `W_BA1_ADDR}:
1099 begin
1100 r_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ba1_bit31_12[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] &
1101 wb_am1[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1102 r_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1103 r_conf_data_out[0] = wb_ba1_bit0 ;
1104 end
1105 {2'b01, `W_AM1_ADDR}:
1106 begin
1107 r_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_am1[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1108 r_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1109 end
1110 {2'b01, `W_TA1_ADDR}:
1111 begin
1112 r_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ta1[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1113 r_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1114 end
1115 {2'b01, `W_IMG_CTRL2_ADDR}: r_conf_data_out = { 29'h00000000, wb_img_ctrl2_bit2_0 } ;
1116 `W_BA2_ADDR :
1117 begin
1118 r_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ba2_bit31_12[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] &
1119 wb_am2[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1120 r_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1121 r_conf_data_out[0] = wb_ba2_bit0 ;
1122 end
1123 {2'b01, `W_AM2_ADDR}:
1124 begin
1125 r_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_am2[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1126 r_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1127 end
1128 {2'b01, `W_TA2_ADDR}:
1129 begin
1130 r_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ta2[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1131 r_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1132 end
1133 {2'b01, `W_IMG_CTRL3_ADDR}: r_conf_data_out = { 29'h00000000, wb_img_ctrl3_bit2_0 } ;
1134 {2'b01, `W_BA3_ADDR}:
1135 begin
1136 r_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ba3_bit31_12[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] &
1137 wb_am3[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1138 r_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1139 r_conf_data_out[0] = wb_ba3_bit0 ;
1140 end
1141 {2'b01, `W_AM3_ADDR}:
1142 begin
1143 r_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_am3[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1144 r_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1145 end
1146 {2'b01, `W_TA3_ADDR}:
1147 begin
1148 r_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ta3[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1149 r_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1150 end
1151 {2'b01, `W_IMG_CTRL4_ADDR}: r_conf_data_out = { 29'h00000000, wb_img_ctrl4_bit2_0 } ;
1152 {2'b01, `W_BA4_ADDR}:
1153 begin
1154 r_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ba4_bit31_12[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] &
1155 wb_am4[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1156 r_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1157 r_conf_data_out[0] = wb_ba4_bit0 ;
1158 end
1159 {2'b01, `W_AM4_ADDR}:
1160 begin
1161 r_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_am4[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1162 r_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1163 end
1164 {2'b01, `W_TA4_ADDR}:
1165 begin
1166 r_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ta4[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1167 r_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1168 end
1169 {2'b01, `W_IMG_CTRL5_ADDR}: r_conf_data_out = { 29'h00000000, wb_img_ctrl5_bit2_0 } ;
1170 {2'b01, `W_BA5_ADDR}:
1171 begin
1172 r_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ba5_bit31_12[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] &
1173 wb_am5[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1174 r_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1175 r_conf_data_out[0] = wb_ba5_bit0 ;
1176 end
1177 {2'b01, `W_AM5_ADDR}:
1178 begin
1179 r_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_am5[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1180 r_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1181 end
1182 {2'b01, `W_TA5_ADDR}:
1183 begin
1184 r_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ta5[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1185 r_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1186 end
1187 {2'b01, `W_ERR_CS_ADDR}: r_conf_data_out = { wb_err_cs_bit31_24, /*13*/14'h0000, /*wb_err_cs_bit10,*/
1188 wb_err_cs_bit9, wb_err_cs_bit8, 7'h00, wb_err_cs_bit0 } ;
1189 {2'b01, `W_ERR_ADDR_ADDR}: r_conf_data_out = wb_err_addr ;
1190 {2'b01, `W_ERR_DATA_ADDR}: r_conf_data_out = wb_err_data ;
1191
1192 {2'b01, `CNF_ADDR_ADDR}: r_conf_data_out = { 8'h00, cnf_addr_bit23_2, 1'h0, cnf_addr_bit0 } ;
1193 // `CNF_DATA_ADDR: implemented elsewhere !!!
1194 // `INT_ACK_ADDR : implemented elsewhere !!!
1195 {2'b01, `ICR_ADDR}: r_conf_data_out = { icr_bit31, 26'h0000_000, icr_bit4_3, icr_bit2_0 } ;
1196 {2'b01, `ISR_ADDR}: r_conf_data_out = { 27'h0000_000, isr_bit4_3, isr_bit2_0 } ;
1197
1198 `ifdef PCI_SPOCI
1199 8'hff: r_conf_data_out = {spoci_cs_nack, 5'h0, spoci_cs_write, spoci_cs_read,
1200 5'h0, spoci_cs_adr[10:8],
1201 spoci_cs_adr[7:0],
1202 spoci_cs_dat[7:0]} ;
1203 `endif
1204 default : r_conf_data_out = 32'h0000_0000 ;
1205 endcase
1206 end
1207
1208 `endif
1209
1210 `ifdef PCI_SPOCI
1211 reg [ 7: 0] spoci_reg_num ;
1212 wire [11: 0] w_conf_address = init_complete ? w_conf_address_in : {2'b00, spoci_reg_num, 2'b00} ;
1213 `else
1214 wire [11: 0] w_conf_address = w_conf_address_in ;
1215 wire [ 7: 0] spoci_reg_num = 'hff ;
1216 `endif
1217
1218 always@(w_conf_address or
1219 status_bit15_11 or status_bit8 or r_status_bit4 or command_bit8 or command_bit6 or command_bit2_0 or
1220 latency_timer or cache_line_size_reg or r_vendor_id or r_device_id or r_revision_id or
1221 r_subsys_id or r_subsys_vendor_id or r_max_lat or r_min_gnt or
1222 pci_ba0_bit31_8 or
1223 pci_img_ctrl0_bit2_1 or pci_am0 or pci_ta0 or pci_ba0_bit0 or
1224 pci_img_ctrl1_bit2_1 or pci_am1 or pci_ta1 or pci_ba1_bit31_8 or pci_ba1_bit0 or
1225 pci_img_ctrl2_bit2_1 or pci_am2 or pci_ta2 or pci_ba2_bit31_8 or pci_ba2_bit0 or
1226 pci_img_ctrl3_bit2_1 or pci_am3 or pci_ta3 or pci_ba3_bit31_8 or pci_ba3_bit0 or
1227 pci_img_ctrl4_bit2_1 or pci_am4 or pci_ta4 or pci_ba4_bit31_8 or pci_ba4_bit0 or
1228 pci_img_ctrl5_bit2_1 or pci_am5 or pci_ta5 or pci_ba5_bit31_8 or pci_ba5_bit0 or
1229 interrupt_line or
1230 pci_err_cs_bit31_24 or pci_err_cs_bit10 or pci_err_cs_bit9 or pci_err_cs_bit8 or pci_err_cs_bit0 or
1231 pci_err_addr or pci_err_data or
1232 wb_ba0_bit31_12 or wb_ba0_bit0 or
1233 wb_img_ctrl1_bit2_0 or wb_ba1_bit31_12 or wb_ba1_bit0 or wb_am1 or wb_ta1 or
1234 wb_img_ctrl2_bit2_0 or wb_ba2_bit31_12 or wb_ba2_bit0 or wb_am2 or wb_ta2 or
1235 wb_img_ctrl3_bit2_0 or wb_ba3_bit31_12 or wb_ba3_bit0 or wb_am3 or wb_ta3 or
1236 wb_img_ctrl4_bit2_0 or wb_ba4_bit31_12 or wb_ba4_bit0 or wb_am4 or wb_ta4 or
1237 wb_img_ctrl5_bit2_0 or wb_ba5_bit31_12 or wb_ba5_bit0 or wb_am5 or wb_ta5 or
1238 wb_err_cs_bit31_24 or /*wb_err_cs_bit10 or*/ wb_err_cs_bit9 or wb_err_cs_bit8 or wb_err_cs_bit0 or
1239 wb_err_addr or wb_err_data or
1240 cnf_addr_bit23_2 or cnf_addr_bit0 or icr_bit31 or icr_bit4_3 or icr_bit2_0 or isr_bit4_3 or isr_bit2_0
1241
1242 `ifdef PCI_CPCI_HS_IMPLEMENT
1243 or hs_ins or hs_ext or hs_pi or hs_loo or hs_eim or hs_cap_id
1244 `endif
1245
1246 `ifdef PCI_SPOCI
1247 or spoci_cs_nack or spoci_cs_write or spoci_cs_read or spoci_cs_adr or spoci_cs_dat
1248 `endif
1249 )
1250 begin
1251 case (w_conf_address[9:2])
1252 8'h0:
1253 begin
1254 w_conf_data_out = { r_device_id, r_vendor_id } ;
1255 w_reg_select_dec = 57'h000_0000_0000_0000 ; // Read-Only register
1256 end
1257 8'h1: // w_reg_select_dec bit 0
1258 begin
1259 w_conf_data_out = { status_bit15_11, r_status_bit10_9, status_bit8, r_status_bit7, 1'h0, r_status_bit5, r_status_bit4,
1260 4'h0, 7'h00, command_bit8, 1'h0, command_bit6, 3'h0, command_bit2_0 } ;
1261 w_reg_select_dec = 57'h000_0000_0000_0001 ;
1262 end
1263 8'h2:
1264 begin
1265 w_conf_data_out = { r_class_code, r_revision_id } ;
1266 w_reg_select_dec = 57'h000_0000_0000_0000 ; // Read-Only register
1267 end
1268 8'h3: // w_reg_select_dec bit 1
1269 begin
1270 w_conf_data_out = { 8'h00, r_header_type, latency_timer, cache_line_size_reg } ;
1271 w_reg_select_dec = 57'h000_0000_0000_0002 ;
1272 end
1273 8'h4: // w_reg_select_dec bit 4
1274 begin
1275 `ifdef HOST
1276 `ifdef NO_CNF_IMAGE
1277 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba0_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
1278 pci_am0[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1279 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1280 w_conf_data_out[0] = pci_ba0_bit0 & pci_am0[31];
1281 `else
1282 w_conf_data_out[31:12] = pci_ba0_bit31_8[31:12] ;
1283 w_conf_data_out[11: 0] = 12'h000 ;
1284 `endif
1285 `endif
1286
1287 `ifdef GUEST
1288 w_conf_data_out[31:12] = pci_ba0_bit31_8[31:12] ;
1289 w_conf_data_out[11: 0] = 12'h000 ;
1290 `endif
1291 w_reg_select_dec = 57'h000_0000_0000_0010 ; // The same for another address
1292 end
1293 8'h5: // w_reg_select_dec bit 8
1294 begin
1295 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba1_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
1296 pci_am1[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1297 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1298 w_conf_data_out[0] = pci_ba1_bit0 & pci_am1[31];
1299 w_reg_select_dec = 57'h000_0000_0000_0100 ; // The same for another address
1300 end
1301 8'h6: // w_reg_select_dec bit 12
1302 begin
1303 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba2_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
1304 pci_am2[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1305 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1306 w_conf_data_out[0] = pci_ba2_bit0 & pci_am2[31];
1307 w_reg_select_dec = 57'h000_0000_0000_1000 ; // The same for another address
1308 end
1309 8'h7: // w_reg_select_dec bit 16
1310 begin
1311 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba3_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
1312 pci_am3[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1313 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1314 w_conf_data_out[0] = pci_ba3_bit0 & pci_am3[31];
1315 w_reg_select_dec = 57'h000_0000_0001_0000 ; // The same for another address
1316 end
1317 8'h8: // w_reg_select_dec bit 20
1318 begin
1319 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba4_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
1320 pci_am4[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1321 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1322 w_conf_data_out[0] = pci_ba4_bit0 & pci_am4[31];
1323 w_reg_select_dec = 57'h000_0000_0010_0000 ; // The same for another address
1324 end
1325 8'h9: // w_reg_select_dec bit 24
1326 begin
1327 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba5_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
1328 pci_am5[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1329 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1330 w_conf_data_out[0] = pci_ba5_bit0 & pci_am5[31];
1331 w_reg_select_dec = 57'h000_0000_0100_0000 ; // The same for another address
1332 end
1333 8'hB:
1334 begin
1335 w_conf_data_out = {r_subsys_id, r_subsys_vendor_id} ;
1336 w_reg_select_dec = 57'h000_0000_0000_0000 ;
1337 end
1338
1339 `ifdef PCI_CPCI_HS_IMPLEMENT
1340 8'hD:
1341 begin
1342 w_conf_data_out = {24'h0000_00, `PCI_CAP_PTR_VAL} ;
1343 w_reg_select_dec = 57'h000_0000_0000_0000 ; // Read-Only register
1344 end
1345 `endif
1346 8'hf: // w_reg_select_dec bit 2
1347 begin
1348 w_conf_data_out = { r_max_lat, r_min_gnt, r_interrupt_pin, interrupt_line } ;
1349 w_reg_select_dec = 57'h000_0000_0000_0004 ;
1350 end
1351 `ifdef PCI_CPCI_HS_IMPLEMENT
1352 (`PCI_CAP_PTR_VAL >> 2):
1353 begin
1354 w_reg_select_dec = 57'h100_0000_0000_0000 ;
1355 w_conf_data_out = {8'h00, hs_ins, hs_ext, hs_pi, hs_loo, 1'b0, hs_eim, 1'b0, 8'h00, hs_cap_id} ;
1356 end
1357 `endif
1358 {2'b01, `P_IMG_CTRL0_ADDR}: // w_reg_select_dec bit 3
1359 begin
1360 w_conf_data_out = { 29'h00000000, pci_img_ctrl0_bit2_1, 1'h0 } ;
1361 w_reg_select_dec = 57'h000_0000_0000_0008 ;
1362 end
1363 {2'b01, `P_BA0_ADDR}: // w_reg_select_dec bit 4
1364 begin
1365 `ifdef HOST
1366 `ifdef NO_CNF_IMAGE
1367 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba0_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
1368 pci_am0[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1369 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1370 w_conf_data_out[0] = pci_ba0_bit0 & pci_am0[31];
1371 `else
1372 w_conf_data_out[31:12] = pci_ba0_bit31_8[31:12] ;
1373 w_conf_data_out[11: 0] = 12'h000 ;
1374 `endif
1375 `endif
1376
1377 `ifdef GUEST
1378 w_conf_data_out[31:12] = pci_ba0_bit31_8[31:12] ;
1379 w_conf_data_out[11: 0] = 12'h000 ;
1380 `endif
1381 w_reg_select_dec = 57'h000_0000_0000_0010 ; // The same for another address
1382 end
1383 {2'b01, `P_AM0_ADDR}: // w_reg_select_dec bit 5
1384 begin
1385 `ifdef HOST
1386 `ifdef NO_CNF_IMAGE
1387 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_am0[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1388 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1389 `else
1390 w_conf_data_out[31:12] = pci_am0[31:12] ;
1391 w_conf_data_out[11: 0] = 12'h000 ;
1392 `endif
1393 `endif
1394
1395 `ifdef GUEST
1396 w_conf_data_out[31:12] = pci_am0[31:12] ;
1397 w_conf_data_out[11: 0] = 12'h000 ;
1398 `endif
1399 w_reg_select_dec = 57'h000_0000_0000_0020 ;
1400 end
1401 {2'b01, `P_TA0_ADDR}: // w_reg_select_dec bit 6
1402 begin
1403 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ta0[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1404 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1405 w_reg_select_dec = 57'h000_0000_0000_0040 ;
1406 end
1407 {2'b01, `P_IMG_CTRL1_ADDR}: // w_reg_select_dec bit 7
1408 begin
1409 w_conf_data_out = { 29'h00000000, pci_img_ctrl1_bit2_1, 1'h0 } ;
1410 w_reg_select_dec = 57'h000_0000_0000_0080 ;
1411 end
1412 {2'b01, `P_BA1_ADDR}: // w_reg_select_dec bit 8
1413 begin
1414 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba1_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
1415 pci_am1[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1416 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1417 w_conf_data_out[0] = pci_ba1_bit0 & pci_am1[31];
1418 w_reg_select_dec = 57'h000_0000_0000_0100 ; // The same for another address
1419 end
1420 {2'b01, `P_AM1_ADDR}: // w_reg_select_dec bit 9
1421 begin
1422 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_am1[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1423 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1424 w_reg_select_dec = 57'h000_0000_0000_0200 ;
1425 end
1426 {2'b01, `P_TA1_ADDR}: // w_reg_select_dec bit 10
1427 begin
1428 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ta1[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1429 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1430 w_reg_select_dec = 57'h000_0000_0000_0400 ;
1431 end
1432 {2'b01, `P_IMG_CTRL2_ADDR}: // w_reg_select_dec bit 11
1433 begin
1434 w_conf_data_out = { 29'h00000000, pci_img_ctrl2_bit2_1, 1'h0 } ;
1435 w_reg_select_dec = 57'h000_0000_0000_0800 ;
1436 end
1437 {2'b01, `P_BA2_ADDR}: // w_reg_select_dec bit 12
1438 begin
1439 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba2_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
1440 pci_am2[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1441 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1442 w_conf_data_out[0] = pci_ba2_bit0 & pci_am2[31];
1443 w_reg_select_dec = 57'h000_0000_0000_1000 ; // The same for another address
1444 end
1445 {2'b01, `P_AM2_ADDR}: // w_reg_select_dec bit 13
1446 begin
1447 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_am2[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1448 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1449 w_reg_select_dec = 57'h000_0000_0000_2000 ;
1450 end
1451 {2'b01, `P_TA2_ADDR}: // w_reg_select_dec bit 14
1452 begin
1453 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ta2[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1454 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1455 w_reg_select_dec = 57'h000_0000_0000_4000 ;
1456 end
1457 {2'b01, `P_IMG_CTRL3_ADDR}: // w_reg_select_dec bit 15
1458 begin
1459 w_conf_data_out = { 29'h00000000, pci_img_ctrl3_bit2_1, 1'h0 } ;
1460 w_reg_select_dec = 57'h000_0000_0000_8000 ;
1461 end
1462 {2'b01, `P_BA3_ADDR}: // w_reg_select_dec bit 16
1463 begin
1464 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba3_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
1465 pci_am3[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1466 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1467 w_conf_data_out[0] = pci_ba3_bit0 & pci_am3[31];
1468 w_reg_select_dec = 57'h000_0000_0001_0000 ; // The same for another address
1469 end
1470 {2'b01, `P_AM3_ADDR}: // w_reg_select_dec bit 17
1471 begin
1472 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_am3[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1473 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1474 w_reg_select_dec = 57'h000_0000_0002_0000 ;
1475 end
1476 {2'b01, `P_TA3_ADDR}: // w_reg_select_dec bit 18
1477 begin
1478 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ta3[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1479 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1480 w_reg_select_dec = 57'h000_0000_0004_0000 ;
1481 end
1482 {2'b01, `P_IMG_CTRL4_ADDR}: // w_reg_select_dec bit 19
1483 begin
1484 w_conf_data_out = { 29'h00000000, pci_img_ctrl4_bit2_1, 1'h0 } ;
1485 w_reg_select_dec = 57'h000_0000_0008_0000 ;
1486 end
1487 {2'b01, `P_BA4_ADDR}: // w_reg_select_dec bit 20
1488 begin
1489 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba4_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
1490 pci_am4[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1491 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1492 w_conf_data_out[0] = pci_ba4_bit0 & pci_am4[31];
1493 w_reg_select_dec = 57'h000_0000_0010_0000 ; // The same for another address
1494 end
1495 {2'b01, `P_AM4_ADDR}: // w_reg_select_dec bit 21
1496 begin
1497 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_am4[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1498 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1499 w_reg_select_dec = 57'h000_0000_0020_0000 ;
1500 end
1501 {2'b01, `P_TA4_ADDR}: // w_reg_select_dec bit 22
1502 begin
1503 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ta4[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1504 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1505 w_reg_select_dec = 57'h000_0000_0040_0000 ;
1506 end
1507 {2'b01, `P_IMG_CTRL5_ADDR}: // w_reg_select_dec bit 23
1508 begin
1509 w_conf_data_out = { 29'h00000000, pci_img_ctrl5_bit2_1, 1'h0 } ;
1510 w_reg_select_dec = 57'h000_0000_0080_0000 ;
1511 end
1512 {2'b01, `P_BA5_ADDR}: // w_reg_select_dec bit 24
1513 begin
1514 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ba5_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] &
1515 pci_am5[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1516 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1517 w_conf_data_out[0] = pci_ba5_bit0 & pci_am5[31];
1518 w_reg_select_dec = 57'h000_0000_0100_0000 ; // The same for another address
1519 end
1520 {2'b01, `P_AM5_ADDR}: // w_reg_select_dec bit 25
1521 begin
1522 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_am5[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1523 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1524 w_reg_select_dec = 57'h000_0000_0200_0000 ;
1525 end
1526 {2'b01, `P_TA5_ADDR}: // w_reg_select_dec bit 26
1527 begin
1528 w_conf_data_out[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = pci_ta5[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1529 w_conf_data_out[(31-`PCI_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1530 w_reg_select_dec = 57'h000_0000_0400_0000 ;
1531 end
1532 {2'b01, `P_ERR_CS_ADDR}: // w_reg_select_dec bit 27
1533 begin
1534 w_conf_data_out = { pci_err_cs_bit31_24, 13'h0000, pci_err_cs_bit10, pci_err_cs_bit9,
1535 pci_err_cs_bit8, 7'h00, pci_err_cs_bit0 } ;
1536 w_reg_select_dec = 57'h000_0000_0800_0000 ;
1537 end
1538 {2'b01, `P_ERR_ADDR_ADDR}: // w_reg_select_dec bit 28
1539 begin
1540 w_conf_data_out = pci_err_addr ;
1541 w_reg_select_dec = 57'h000_0000_0000_0000 ; // = 56'h00_0000_1000_0000 ;
1542 end
1543 {2'b01, `P_ERR_DATA_ADDR}: // w_reg_select_dec bit 29
1544 begin
1545 w_conf_data_out = pci_err_data ;
1546 w_reg_select_dec = 57'h000_0000_0000_0000 ; // = 56'h00_0000_2000_0000 ;
1547 end
1548 // WB slave - configuration space
1549 {2'b01, `WB_CONF_SPC_BAR_ADDR}:
1550 begin
1551 w_conf_data_out = { wb_ba0_bit31_12, 11'h000, wb_ba0_bit0 } ;
1552 w_reg_select_dec = 57'h000_0000_0000_0000 ; // Read-Only register
1553 end
1554 {2'b01, `W_IMG_CTRL1_ADDR}: // w_reg_select_dec bit 30
1555 begin
1556 w_conf_data_out = { 29'h00000000, wb_img_ctrl1_bit2_0 } ;
1557 w_reg_select_dec = 57'h000_0000_4000_0000 ;
1558 end
1559 {2'b01, `W_BA1_ADDR}: // w_reg_select_dec bit 31
1560 begin
1561 w_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ba1_bit31_12[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] &
1562 wb_am1[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1563 w_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1564 w_conf_data_out[0] = wb_ba1_bit0 ;
1565 w_reg_select_dec = 57'h000_0000_8000_0000 ;
1566 end
1567 {2'b01, `W_AM1_ADDR}: // w_reg_select_dec bit 32
1568 begin
1569 w_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_am1[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1570 w_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1571 w_reg_select_dec = 57'h000_0001_0000_0000 ;
1572 end
1573 {2'b01, `W_TA1_ADDR}: // w_reg_select_dec bit 33
1574 begin
1575 w_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ta1[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1576 w_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1577 w_reg_select_dec = 57'h000_0002_0000_0000 ;
1578 end
1579 {2'b01, `W_IMG_CTRL2_ADDR}: // w_reg_select_dec bit 34
1580 begin
1581 w_conf_data_out = { 29'h00000000, wb_img_ctrl2_bit2_0 } ;
1582 w_reg_select_dec = 57'h000_0004_0000_0000 ;
1583 end
1584 {2'b01, `W_BA2_ADDR}: // w_reg_select_dec bit 35
1585 begin
1586 w_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ba2_bit31_12[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] &
1587 wb_am2[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1588 w_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1589 w_conf_data_out[0] = wb_ba2_bit0 ;
1590 w_reg_select_dec = 57'h000_0008_0000_0000 ;
1591 end
1592 {2'b01, `W_AM2_ADDR}: // w_reg_select_dec bit 36
1593 begin
1594 w_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_am2[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1595 w_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1596 w_reg_select_dec = 57'h000_0010_0000_0000 ;
1597 end
1598 {2'b01, `W_TA2_ADDR}: // w_reg_select_dec bit 37
1599 begin
1600 w_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ta2[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1601 w_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1602 w_reg_select_dec = 57'h000_0020_0000_0000 ;
1603 end
1604 {2'b01, `W_IMG_CTRL3_ADDR}: // w_reg_select_dec bit 38
1605 begin
1606 w_conf_data_out = { 29'h00000000, wb_img_ctrl3_bit2_0 } ;
1607 w_reg_select_dec = 57'h000_0040_0000_0000 ;
1608 end
1609 {2'b01, `W_BA3_ADDR}: // w_reg_select_dec bit 39
1610 begin
1611 w_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ba3_bit31_12[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] &
1612 wb_am3[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1613 w_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1614 w_conf_data_out[0] = wb_ba3_bit0 ;
1615 w_reg_select_dec = 57'h000_0080_0000_0000 ;
1616 end
1617 {2'b01, `W_AM3_ADDR}: // w_reg_select_dec bit 40
1618 begin
1619 w_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_am3[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1620 w_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1621 w_reg_select_dec = 57'h000_0100_0000_0000 ;
1622 end
1623 {2'b01, `W_TA3_ADDR}: // w_reg_select_dec bit 41
1624 begin
1625 w_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ta3[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1626 w_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1627 w_reg_select_dec = 57'h000_0200_0000_0000 ;
1628 end
1629 {2'b01, `W_IMG_CTRL4_ADDR}: // w_reg_select_dec bit 42
1630 begin
1631 w_conf_data_out = { 29'h00000000, wb_img_ctrl4_bit2_0 } ;
1632 w_reg_select_dec = 57'h000_0400_0000_0000 ;
1633 end
1634 {2'b01, `W_BA4_ADDR}: // w_reg_select_dec bit 43
1635 begin
1636 w_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ba4_bit31_12[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] &
1637 wb_am4[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1638 w_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1639 w_conf_data_out[0] = wb_ba4_bit0 ;
1640 w_reg_select_dec = 57'h000_0800_0000_0000 ;
1641 end
1642 {2'b01, `W_AM4_ADDR}: // w_reg_select_dec bit 44
1643 begin
1644 w_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_am4[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1645 w_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1646 w_reg_select_dec = 57'h000_1000_0000_0000 ;
1647 end
1648 {2'b01, `W_TA4_ADDR}: // w_reg_select_dec bit 45
1649 begin
1650 w_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ta4[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1651 w_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1652 w_reg_select_dec = 57'h000_2000_0000_0000 ;
1653 end
1654 {2'b01, `W_IMG_CTRL5_ADDR}: // w_reg_select_dec bit 46
1655 begin
1656 w_conf_data_out = { 29'h00000000, wb_img_ctrl5_bit2_0 } ;
1657 w_reg_select_dec = 57'h000_4000_0000_0000 ;
1658 end
1659 {2'b01, `W_BA5_ADDR}: // w_reg_select_dec bit 47
1660 begin
1661 w_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ba5_bit31_12[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] &
1662 wb_am5[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1663 w_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):1] = 0 ;
1664 w_conf_data_out[0] = wb_ba5_bit0 ;
1665 w_reg_select_dec = 57'h000_8000_0000_0000 ;
1666 end
1667 {2'b01, `W_AM5_ADDR}: // w_reg_select_dec bit 48
1668 begin
1669 w_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_am5[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1670 w_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1671 w_reg_select_dec = 57'h001_0000_0000_0000 ;
1672 end
1673 {2'b01, `W_TA5_ADDR}: // w_reg_select_dec bit 49
1674 begin
1675 w_conf_data_out[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = wb_ta5[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1676 w_conf_data_out[(31-`WB_NUM_OF_DEC_ADDR_LINES):0] = 0 ;
1677 w_reg_select_dec = 57'h002_0000_0000_0000 ;
1678 end
1679 {2'b01, `W_ERR_CS_ADDR}: // w_reg_select_dec bit 50
1680 begin
1681 w_conf_data_out = { wb_err_cs_bit31_24, /*13*/14'h0000, /*wb_err_cs_bit10,*/
1682 wb_err_cs_bit9, wb_err_cs_bit8, 7'h00, wb_err_cs_bit0 } ;
1683 w_reg_select_dec = 57'h004_0000_0000_0000 ;
1684 end
1685 {2'b01, `W_ERR_ADDR_ADDR}: // w_reg_select_dec bit 51
1686 begin
1687 w_conf_data_out = wb_err_addr ;
1688 w_reg_select_dec = 57'h008_0000_0000_0000 ;
1689 end
1690 {2'b01, `W_ERR_DATA_ADDR}: // w_reg_select_dec bit 52
1691 begin
1692 w_conf_data_out = wb_err_data ;
1693 w_reg_select_dec = 57'h010_0000_0000_0000 ;
1694 end
1695 {2'b01, `CNF_ADDR_ADDR}: // w_reg_select_dec bit 53
1696 begin
1697 w_conf_data_out = { 8'h00, cnf_addr_bit23_2, 1'h0, cnf_addr_bit0 } ;
1698 w_reg_select_dec = 57'h020_0000_0000_0000 ;
1699 end
1700 // `CNF_DATA_ADDR: implemented elsewhere !!!
1701 // `INT_ACK_ADDR: implemented elsewhere !!!
1702 {2'b01, `ICR_ADDR}: // w_reg_select_dec bit 54
1703 begin
1704 w_conf_data_out = { icr_bit31, 26'h0000_000, icr_bit4_3, icr_bit2_0 } ;
1705 w_reg_select_dec = 57'h040_0000_0000_0000 ;
1706 end
1707 {2'b01, `ISR_ADDR}: // w_reg_select_dec bit 55
1708 begin
1709 w_conf_data_out = { 27'h0000_000, isr_bit4_3, isr_bit2_0 } ;
1710 w_reg_select_dec = 57'h080_0000_0000_0000 ;
1711 end
1712
1713 `ifdef PCI_SPOCI
1714 8'hff:
1715 begin
1716 w_conf_data_out = {spoci_cs_nack, 5'h0, spoci_cs_write, spoci_cs_read,
1717 5'h0, spoci_cs_adr[10:8],
1718 spoci_cs_adr[7:0],
1719 spoci_cs_dat[7:0]} ;
1720
1721 // this register is implemented separate from other registers, because
1722 // it has special features implemented
1723 w_reg_select_dec = 57'h000_0000_0000_0000 ;
1724 end
1725 `endif
1726
1727 default:
1728 begin
1729 w_conf_data_out = 32'h0000_0000 ;
1730 w_reg_select_dec = 57'h000_0000_0000_0000 ;
1731 end
1732 endcase
1733 end
1734
1735 `ifdef PCI_SPOCI
1736 reg init_we ;
1737 reg init_cfg_done ;
1738 reg [31: 0] spoci_dat ;
1739 wire [31: 0] w_conf_data = init_cfg_done ? w_conf_data_in : spoci_dat ;
1740 wire [ 3: 0] w_byte_en = init_cfg_done ? w_byte_en_in : 4'b0000 ;
1741 `else
1742 wire init_we = 1'b0 ;
1743 wire init_cfg_done = 1'b1 ;
1744 wire [31: 0] w_conf_data = w_conf_data_in ;
1745 wire [ 3: 0] w_byte_en = w_byte_en_in ;
1746 wire [31: 0] spoci_dat = 'h0000_0000 ;
1747 `endif
1748
1749 // Reduced write data for BASE, MASK and TRANSLATION registers of PCI and WB images
1750 assign w_conf_pdata_reduced[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] = w_conf_data[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
1751 assign w_conf_pdata_reduced[(31-`PCI_NUM_OF_DEC_ADDR_LINES): 0] = 0 ;
1752 assign w_conf_wdata_reduced[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] = w_conf_data[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
1753 assign w_conf_wdata_reduced[(31-`WB_NUM_OF_DEC_ADDR_LINES): 0] = 0 ;
1754
1755 wire w_we = w_we_i | init_we ;
1756
1757 always@(posedge w_clock or posedge reset)
1758 begin
1759 // Here are implemented all registers that are reset with RESET signal otherwise they can be normaly written!!!
1760 // Registers that are commented are implemented after this alwasy statement, because they are e.g. reset with
1761 // RESET signal, set with some status signal and they are erased with writting '1' into them !!!
1762 if (reset)
1763 begin
1764 /*status_bit15_11 ; status_bit8 ;*/ command_bit8 <= 1'h0 ; command_bit6 <= 1'h0 ; command_bit2_0 <= 3'h0 ;
1765 latency_timer <= 8'h00 ; cache_line_size_reg <= 8'h00 ;
1766 // ALL pci_base address registers are the same as pci_baX registers !
1767 interrupt_line <= 8'h00 ;
1768
1769 `ifdef HOST
1770 `ifdef NO_CNF_IMAGE // if PCI bridge is HOST and IMAGE0 is assigned as general image space
1771 `ifdef PCI_IMAGE0
1772 pci_img_ctrl0_bit2_1 <= {`PCI_AT_EN0, 1'b0} ;
1773 pci_ba0_bit31_8 <= 24'h0000_00 ;
1774 pci_ba0_bit0 <= `PCI_BA0_MEM_IO ;
1775 pci_am0 <= `PCI_AM0 ;
1776 pci_ta0 <= `PCI_TA0 ;//fr2201 translation address
1777 `endif
1778 `else
1779 pci_ba0_bit31_8 <= 24'h0000_00 ;
1780 `endif
1781 `endif
1782
1783 `ifdef GUEST
1784 pci_ba0_bit31_8 <= 24'h0000_00 ;
1785 `endif
1786
1787 pci_img_ctrl1_bit2_1 <= {`PCI_AT_EN1, 1'b0} ;
1788
1789 pci_ba1_bit31_8 <= 24'h0000_00 ;
1790 `ifdef HOST
1791 pci_ba1_bit0 <= `PCI_BA1_MEM_IO ;
1792 `endif
1793 pci_am1 <= `PCI_AM1;
1794 pci_ta1 <= `PCI_TA1 ;//FR2201 translation address ;
1795 `ifdef PCI_IMAGE2
1796
1797 pci_img_ctrl2_bit2_1 <= {`PCI_AT_EN2, 1'b0} ;
1798
1799 pci_ba2_bit31_8 <= 24'h0000_00 ;
1800 `ifdef HOST
1801 pci_ba2_bit0 <= `PCI_BA2_MEM_IO ;
1802 `endif
1803 pci_am2 <= `PCI_AM2;
1804 pci_ta2 <= `PCI_TA2 ;//FR2201 translation address ;
1805 `endif
1806 `ifdef PCI_IMAGE3
1807
1808 pci_img_ctrl3_bit2_1 <= {`PCI_AT_EN3, 1'b0} ; //FR2201 when defined enabled
1809
1810 pci_ba3_bit31_8 <= 24'h0000_00 ;
1811 `ifdef HOST
1812 pci_ba3_bit0 <= `PCI_BA3_MEM_IO ;
1813 `endif
1814 pci_am3 <= `PCI_AM3;
1815 pci_ta3 <= `PCI_TA3 ;//FR2201 translation address ;
1816 `endif
1817 `ifdef PCI_IMAGE4
1818
1819 pci_img_ctrl4_bit2_1 <= {`PCI_AT_EN4, 1'b0} ; //FR2201 when defined enabled
1820
1821 pci_ba4_bit31_8 <= 24'h0000_00 ;
1822 `ifdef HOST
1823 pci_ba4_bit0 <= `PCI_BA4_MEM_IO ;
1824 `endif
1825 pci_am4 <= `PCI_AM4;
1826 pci_ta4 <= `PCI_TA4 ;//FR2201 translation address ;
1827 `endif
1828 `ifdef PCI_IMAGE5
1829
1830 pci_img_ctrl5_bit2_1 <= {`PCI_AT_EN5, 1'b0} ; //FR2201 when defined enabled
1831
1832 pci_ba5_bit31_8 <= 24'h0000_00 ;
1833 `ifdef HOST
1834 pci_ba5_bit0 <= `PCI_BA5_MEM_IO ;
1835 `endif
1836 pci_am5 <= `PCI_AM5; //FR2201 pci_am0
1837 pci_ta5 <= `PCI_TA5 ;//FR2201 translation address ;
1838 `endif
1839 /*pci_err_cs_bit31_24 ; pci_err_cs_bit10; pci_err_cs_bit9 ; pci_err_cs_bit8 ;*/ pci_err_cs_bit0 <= 1'h0 ;
1840 /*pci_err_addr ;*/
1841 /*pci_err_data ;*/
1842 //
1843 wb_img_ctrl1_bit2_0 <= {`WB_AT_EN1, 2'b00} ;
1844
1845 wb_ba1_bit31_12 <=`WB_BA1; //FR2201 Address bar
1846 wb_ba1_bit0 <=`WB_BA1_MEM_IO;//
1847 wb_am1 <= `WB_AM1 ;//FR2201 Address mask
1848 wb_ta1 <= `WB_TA1 ;//FR2201 20'h0000_0 ;
1849 `ifdef WB_IMAGE2
1850 wb_img_ctrl2_bit2_0 <= {`WB_AT_EN2, 2'b00} ;
1851
1852 wb_ba2_bit31_12 <=`WB_BA2; //FR2201 Address bar
1853 wb_ba2_bit0 <=`WB_BA2_MEM_IO;//
1854 wb_am2 <=`WB_AM2 ;//FR2201 Address mask
1855 wb_ta2 <=`WB_TA2 ;//FR2201 translation address ;
1856 `endif
1857 `ifdef WB_IMAGE3
1858 wb_img_ctrl3_bit2_0 <= {`WB_AT_EN3, 2'b00} ;
1859
1860 wb_ba3_bit31_12 <=`WB_BA3; //FR2201 Address bar
1861 wb_ba3_bit0 <=`WB_BA3_MEM_IO;//
1862 wb_am3 <=`WB_AM3 ;//FR2201 Address mask
1863 wb_ta3 <=`WB_TA3 ;//FR2201 translation address ;
1864 `endif
1865 `ifdef WB_IMAGE4
1866 wb_img_ctrl4_bit2_0 <= {`WB_AT_EN4, 2'b00} ;
1867
1868 wb_ba4_bit31_12 <=`WB_BA4; //FR2201 Address bar
1869 wb_ba4_bit0 <=`WB_BA4_MEM_IO;//
1870 wb_am4 <=`WB_AM4 ;//FR2201 Address mask
1871 wb_ta4 <=`WB_TA4 ;//FR2201 translation address ;
1872 `endif
1873 `ifdef WB_IMAGE5
1874 wb_img_ctrl5_bit2_0 <= {`WB_AT_EN5, 2'b00} ;
1875
1876 wb_ba5_bit31_12 <=`WB_BA5; //FR2201 Address bar ;
1877 wb_ba5_bit0 <=`WB_BA5_MEM_IO;//FR2201 1'h0 ;
1878 wb_am5 <=`WB_AM5 ;//FR2201 Address mask
1879 wb_ta5 <=`WB_TA5 ;//FR2201 translation address ;
1880 `endif
1881 /*wb_err_cs_bit31_24 ; wb_err_cs_bit10 ; wb_err_cs_bit9 ; wb_err_cs_bit8 ;*/ wb_err_cs_bit0 <= 1'h0 ;
1882 /*wb_err_addr ;*/
1883 /*wb_err_data ;*/
1884
1885 `ifdef HOST
1886 cnf_addr_bit23_2 <= 22'h0000_00 ; cnf_addr_bit0 <= 1'h0 ;
1887 `endif
1888
1889 icr_bit31 <= 1'h0 ;
1890 `ifdef HOST
1891 icr_bit2_0 <= 3'h0 ;
1892 icr_bit4_3 <= 2'h0 ;
1893 `else
1894 icr_bit2_0[2:0] <= 3'h0 ;
1895 `endif
1896 /*isr_bit4_3 ; isr_bit2_0 ;*/
1897
1898 // Not register bit; used only internally after reset!
1899 init_complete <= 1'b0 ;
1900
1901 `ifdef GUEST
1902 rst_inactive_sync <= 1'b0 ;
1903 rst_inactive <= 1'b0 ;
1904 `endif
1905
1906 `ifdef PCI_CPCI_HS_IMPLEMENT
1907 /*hs_ins hs_ext*/ hs_loo <= 1'b0; hs_eim <= 1'b0;
1908 // Not register bits; used only internally after reset!
1909 /*hs_ins_armed hs_ext_armed*/
1910 `endif
1911 end
1912 /* -----------------------------------------------------------------------------------------------------------
1913 Following register bits should have asynchronous RESET & SET! That is why they are IMPLEMENTED separately
1914 after this ALWAYS block!!! (for every register bit, there are two D-FF implemented)
1915 status_bit15_11[15] <= 1'b1 ;
1916 status_bit15_11[14] <= 1'b1 ;
1917 status_bit15_11[13] <= 1'b1 ;
1918 status_bit15_11[12] <= 1'b1 ;
1919 status_bit15_11[11] <= 1'b1 ;
1920 status_bit8 <= 1'b1 ;
1921 pci_err_cs_bit10 <= 1'b1 ;
1922 pci_err_cs_bit9 <= 1'b1 ;
1923 pci_err_cs_bit8 <= 1'b1 ;
1924 pci_err_cs_bit31_24 <= { pci_error_be, pci_error_bc } ;
1925 pci_err_addr <= pci_error_addr ;
1926 pci_err_data <= pci_error_data ;
1927 wb_err_cs_bit10 <= 1'b1 ;
1928 wb_err_cs_bit9 <= 1'b1 ;
1929 wb_err_cs_bit8 <= 1'b1 ;
1930 wb_err_cs_bit31_24 <= { wb_error_be, wb_error_bc } ;
1931 wb_err_addr <= wb_error_addr ;
1932 wb_err_data <= wb_error_data ;
1933 isr_bit4_0[4] <= 1'b1 & icr_bit4_0[4] ;
1934 isr_bit4_0[3] <= 1'b1 & icr_bit4_0[3] ;
1935 isr_bit4_0[2] <= 1'b1 & icr_bit4_0[2] ;
1936 isr_bit4_0[1] <= 1'b1 & icr_bit4_0[1] ;
1937 isr_bit4_0[0] <= 1'b1 & icr_bit4_0[0] ;
1938
1939 hs_ins; hs_ext;
1940 -----------------------------------------------------------------------------------------------------------*/
1941 // Here follows normal writting to registers (only to their valid bits) !
1942 else
1943 begin
1944 if (w_we)
1945 begin
1946 // PCI header - configuration space
1947 if (w_reg_select_dec[0]) // w_conf_address[5:2] = 4'h1:
1948 begin
1949 if (~w_byte_en[1])
1950 command_bit8 <= w_conf_data[8] ;
1951 if (~w_byte_en[0])
1952 begin
1953 command_bit6 <= w_conf_data[6] ;
1954 command_bit2_0 <= w_conf_data[2:0] ;
1955 end
1956 end
1957 if (w_reg_select_dec[1]) // w_conf_address[5:2] = 4'h3:
1958 begin
1959 if (~w_byte_en[1])
1960 latency_timer <= w_conf_data[15:8] ;
1961 if (~w_byte_en[0])
1962 cache_line_size_reg <= w_conf_data[7:0] ;
1963 end
1964 // if (w_reg_select_dec[4]) // w_conf_address[5:2] = 4'h4:
1965 // Also used with IMAGE0
1966
1967 // if (w_reg_select_dec[8]) // w_conf_address[5:2] = 4'h5:
1968 // Also used with IMAGE1
1969
1970 // if (w_reg_select_dec[12]) // w_conf_address[5:2] = 4'h6:
1971 // Also used with IMAGE2
1972
1973 // if (w_reg_select_dec[16]) // w_conf_address[5:2] = 4'h7:
1974 // Also used with IMAGE3
1975
1976 // if (w_reg_select_dec[20]) // w_conf_address[5:2] = 4'h8:
1977 // Also used with IMAGE4
1978
1979 // if (w_reg_select_dec[24]) // w_conf_address[5:2] = 4'h9:
1980 // Also used with IMAGE5 and IMAGE6
1981 if (w_reg_select_dec[2]) // w_conf_address[5:2] = 4'hf:
1982 begin
1983 if (~w_byte_en[0])
1984 interrupt_line <= w_conf_data[7:0] ;
1985 end
1986 // PCI target - configuration space
1987 `ifdef HOST
1988 `ifdef NO_CNF_IMAGE
1989 `ifdef PCI_IMAGE0 // if PCI bridge is HOST and IMAGE0 is assigned as general image space
1990 if (w_reg_select_dec[3]) // case (w_conf_address[7:2]) = `P_IMG_CTRL0_ADDR:
1991 begin
1992 if (~w_byte_en[0])
1993 pci_img_ctrl0_bit2_1 <= w_conf_data[2:1] ;
1994 end
1995 if (w_reg_select_dec[4]) // case (w_conf_address[7:2]) = `P_BA0_ADDR:
1996 begin
1997 if (~w_byte_en[3])
1998 pci_ba0_bit31_8[31:24] <= w_conf_pdata_reduced[31:24] ;
1999 if (~w_byte_en[2])
2000 pci_ba0_bit31_8[23:16] <= w_conf_pdata_reduced[23:16] ;
2001 if (~w_byte_en[1])
2002 pci_ba0_bit31_8[15: 8] <= w_conf_pdata_reduced[15: 8] ;
2003 if (~w_byte_en[0])
2004 pci_ba0_bit0 <= w_conf_data[0] ;
2005 end
2006 if (w_reg_select_dec[5]) // case (w_conf_address[7:2]) = `P_AM0_ADDR:
2007 begin
2008 if (~w_byte_en[3])
2009 pci_am0[31:24] <= w_conf_pdata_reduced[31:24] ;
2010 if (~w_byte_en[2])
2011 pci_am0[23:16] <= w_conf_pdata_reduced[23:16] ;
2012 if (~w_byte_en[1])
2013 pci_am0[15: 8] <= w_conf_pdata_reduced[15: 8] ;
2014 end
2015 if (w_reg_select_dec[6]) // case (w_conf_address[7:2]) = `P_TA0_ADDR:
2016 begin
2017 if (~w_byte_en[3])
2018 pci_ta0[31:24] <= w_conf_pdata_reduced[31:24] ;
2019 if (~w_byte_en[2])
2020 pci_ta0[23:16] <= w_conf_pdata_reduced[23:16] ;
2021 if (~w_byte_en[1])
2022 pci_ta0[15: 8] <= w_conf_pdata_reduced[15: 8] ;
2023 end
2024 `endif
2025 `else
2026 if (w_reg_select_dec[4]) // case (w_conf_address[7:2]) = `P_BA0_ADDR:
2027 begin
2028 if (~w_byte_en[3])
2029 pci_ba0_bit31_8[31:24] <= w_conf_data[31:24] ;
2030 if (~w_byte_en[2])
2031 pci_ba0_bit31_8[23:16] <= w_conf_data[23:16] ;
2032 if (~w_byte_en[1])
2033 pci_ba0_bit31_8[15:12] <= w_conf_data[15:12] ;
2034 end
2035 `endif
2036 `endif
2037
2038 `ifdef GUEST
2039 if (w_reg_select_dec[4]) // case (w_conf_address[7:2]) = `P_BA0_ADDR:
2040 begin
2041 if (~w_byte_en[3])
2042 pci_ba0_bit31_8[31:24] <= w_conf_data[31:24] ;
2043 if (~w_byte_en[2])
2044 pci_ba0_bit31_8[23:16] <= w_conf_data[23:16] ;
2045 if (~w_byte_en[1])
2046 pci_ba0_bit31_8[15:12] <= w_conf_data[15:12] ;
2047 end
2048 `endif
2049 if (w_reg_select_dec[7]) // case (w_conf_address[7:2]) = `P_IMG_CTRL1_ADDR:
2050 begin
2051 if (~w_byte_en[0])
2052 pci_img_ctrl1_bit2_1 <= w_conf_data[2:1] ;
2053 end
2054 if (w_reg_select_dec[8]) // case (w_conf_address[7:2]) = `P_BA1_ADDR:
2055 begin
2056 if (~w_byte_en[3])
2057 pci_ba1_bit31_8[31:24] <= w_conf_pdata_reduced[31:24] ;
2058 if (~w_byte_en[2])
2059 pci_ba1_bit31_8[23:16] <= w_conf_pdata_reduced[23:16] ;
2060 if (~w_byte_en[1])
2061 pci_ba1_bit31_8[15: 8] <= w_conf_pdata_reduced[15: 8] ;
2062 `ifdef HOST
2063 if (~w_byte_en[0])
2064 pci_ba1_bit0 <= w_conf_data[0] ;
2065 `endif
2066 end
2067 if (w_reg_select_dec[9]) // case (w_conf_address[7:2]) = `P_AM1_ADDR:
2068 begin
2069 if (~w_byte_en[3])
2070 pci_am1[31:24] <= w_conf_pdata_reduced[31:24] ;
2071 if (~w_byte_en[2])
2072 pci_am1[23:16] <= w_conf_pdata_reduced[23:16] ;
2073 if (~w_byte_en[1])
2074 pci_am1[15: 8] <= w_conf_pdata_reduced[15: 8] ;
2075 end
2076 if (w_reg_select_dec[10]) // case (w_conf_address[7:2]) = `P_TA1_ADDR:
2077 begin
2078 if (~w_byte_en[3])
2079 pci_ta1[31:24] <= w_conf_pdata_reduced[31:24] ;
2080 if (~w_byte_en[2])
2081 pci_ta1[23:16] <= w_conf_pdata_reduced[23:16] ;
2082 if (~w_byte_en[1])
2083 pci_ta1[15: 8] <= w_conf_pdata_reduced[15: 8] ;
2084 end
2085 `ifdef PCI_IMAGE2
2086 if (w_reg_select_dec[11]) // case (w_conf_address[7:2]) = `P_IMG_CTRL2_ADDR:
2087 begin
2088 if (~w_byte_en[0])
2089 pci_img_ctrl2_bit2_1 <= w_conf_data[2:1] ;
2090 end
2091 if (w_reg_select_dec[12]) // case (w_conf_address[7:2]) = `P_BA2_ADDR:
2092 begin
2093 if (~w_byte_en[3])
2094 pci_ba2_bit31_8[31:24] <= w_conf_pdata_reduced[31:24] ;
2095 if (~w_byte_en[2])
2096 pci_ba2_bit31_8[23:16] <= w_conf_pdata_reduced[23:16] ;
2097 if (~w_byte_en[1])
2098 pci_ba2_bit31_8[15: 8] <= w_conf_pdata_reduced[15: 8] ;
2099 `ifdef HOST
2100 if (~w_byte_en[0])
2101 pci_ba2_bit0 <= w_conf_data[0] ;
2102 `endif
2103 end
2104 if (w_reg_select_dec[13]) // case (w_conf_address[7:2]) = `P_AM2_ADDR:
2105 begin
2106 if (~w_byte_en[3])
2107 pci_am2[31:24] <= w_conf_pdata_reduced[31:24] ;
2108 if (~w_byte_en[2])
2109 pci_am2[23:16] <= w_conf_pdata_reduced[23:16] ;
2110 if (~w_byte_en[1])
2111 pci_am2[15: 8] <= w_conf_pdata_reduced[15: 8] ;
2112 end
2113 if (w_reg_select_dec[14]) // case (w_conf_address[7:2]) = `P_TA2_ADDR:
2114 begin
2115 if (~w_byte_en[3])
2116 pci_ta2[31:24] <= w_conf_pdata_reduced[31:24] ;
2117 if (~w_byte_en[2])
2118 pci_ta2[23:16] <= w_conf_pdata_reduced[23:16] ;
2119 if (~w_byte_en[1])
2120 pci_ta2[15: 8] <= w_conf_pdata_reduced[15: 8] ;
2121 end
2122 `endif
2123 `ifdef PCI_IMAGE3
2124 if (w_reg_select_dec[15]) // case (w_conf_address[7:2]) = `P_IMG_CTRL3_ADDR:
2125 begin
2126 if (~w_byte_en[0])
2127 pci_img_ctrl3_bit2_1 <= w_conf_data[2:1] ;
2128 end
2129 if (w_reg_select_dec[16]) // case (w_conf_address[7:2]) = `P_BA3_ADDR:
2130 begin
2131 if (~w_byte_en[3])
2132 pci_ba3_bit31_8[31:24] <= w_conf_pdata_reduced[31:24] ;
2133 if (~w_byte_en[2])
2134 pci_ba3_bit31_8[23:16] <= w_conf_pdata_reduced[23:16] ;
2135 if (~w_byte_en[1])
2136 pci_ba3_bit31_8[15: 8] <= w_conf_pdata_reduced[15: 8] ;
2137 `ifdef HOST
2138 if (~w_byte_en[0])
2139 pci_ba3_bit0 <= w_conf_data[0] ;
2140 `endif
2141 end
2142 if (w_reg_select_dec[17]) // case (w_conf_address[7:2]) = `P_AM3_ADDR:
2143 begin
2144 if (~w_byte_en[3])
2145 pci_am3[31:24] <= w_conf_pdata_reduced[31:24] ;
2146 if (~w_byte_en[2])
2147 pci_am3[23:16] <= w_conf_pdata_reduced[23:16] ;
2148 if (~w_byte_en[1])
2149 pci_am3[15: 8] <= w_conf_pdata_reduced[15: 8] ;
2150 end
2151 if (w_reg_select_dec[18]) // case (w_conf_address[7:2]) = `P_TA3_ADDR:
2152 begin
2153 if (~w_byte_en[3])
2154 pci_ta3[31:24] <= w_conf_pdata_reduced[31:24] ;
2155 if (~w_byte_en[2])
2156 pci_ta3[23:16] <= w_conf_pdata_reduced[23:16] ;
2157 if (~w_byte_en[1])
2158 pci_ta3[15: 8] <= w_conf_pdata_reduced[15: 8] ;
2159 end
2160 `endif
2161 `ifdef PCI_IMAGE4
2162 if (w_reg_select_dec[19]) // case (w_conf_address[7:2]) = `P_IMG_CTRL4_ADDR:
2163 begin
2164 if (~w_byte_en[0])
2165 pci_img_ctrl4_bit2_1 <= w_conf_data[2:1] ;
2166 end
2167 if (w_reg_select_dec[20]) // case (w_conf_address[7:2]) = `P_BA4_ADDR:
2168 begin
2169 if (~w_byte_en[3])
2170 pci_ba4_bit31_8[31:24] <= w_conf_pdata_reduced[31:24] ;
2171 if (~w_byte_en[2])
2172 pci_ba4_bit31_8[23:16] <= w_conf_pdata_reduced[23:16] ;
2173 if (~w_byte_en[1])
2174 pci_ba4_bit31_8[15: 8] <= w_conf_pdata_reduced[15: 8] ;
2175 `ifdef HOST
2176 if (~w_byte_en[0])
2177 pci_ba4_bit0 <= w_conf_data[0] ;
2178 `endif
2179 end
2180 if (w_reg_select_dec[21]) // case (w_conf_address[7:2]) = `P_AM4_ADDR:
2181 begin
2182 if (~w_byte_en[3])
2183 pci_am4[31:24] <= w_conf_pdata_reduced[31:24] ;
2184 if (~w_byte_en[2])
2185 pci_am4[23:16] <= w_conf_pdata_reduced[23:16] ;
2186 if (~w_byte_en[1])
2187 pci_am4[15: 8] <= w_conf_pdata_reduced[15: 8] ;
2188 end
2189 if (w_reg_select_dec[22]) // case (w_conf_address[7:2]) = `P_TA4_ADDR:
2190 begin
2191 if (~w_byte_en[3])
2192 pci_ta4[31:24] <= w_conf_pdata_reduced[31:24] ;
2193 if (~w_byte_en[2])
2194 pci_ta4[23:16] <= w_conf_pdata_reduced[23:16] ;
2195 if (~w_byte_en[1])
2196 pci_ta4[15: 8] <= w_conf_pdata_reduced[15: 8] ;
2197 end
2198 `endif
2199 `ifdef PCI_IMAGE5
2200 if (w_reg_select_dec[23]) // case (w_conf_address[7:2]) = `P_IMG_CTRL5_ADDR:
2201 begin
2202 if (~w_byte_en[0])
2203 pci_img_ctrl5_bit2_1 <= w_conf_data[2:1] ;
2204 end
2205 if (w_reg_select_dec[24]) // case (w_conf_address[7:2]) = `P_BA5_ADDR:
2206 begin
2207 if (~w_byte_en[3])
2208 pci_ba5_bit31_8[31:24] <= w_conf_pdata_reduced[31:24] ;
2209 if (~w_byte_en[2])
2210 pci_ba5_bit31_8[23:16] <= w_conf_pdata_reduced[23:16] ;
2211 if (~w_byte_en[1])
2212 pci_ba5_bit31_8[15: 8] <= w_conf_pdata_reduced[15: 8] ;
2213 `ifdef HOST
2214 if (~w_byte_en[0])
2215 pci_ba5_bit0 <= w_conf_data[0] ;
2216 `endif
2217 end
2218 if (w_reg_select_dec[25]) // case (w_conf_address[7:2]) = `P_AM5_ADDR:
2219 begin
2220 if (~w_byte_en[3])
2221 pci_am5[31:24] <= w_conf_pdata_reduced[31:24] ;
2222 if (~w_byte_en[2])
2223 pci_am5[23:16] <= w_conf_pdata_reduced[23:16] ;
2224 if (~w_byte_en[1])
2225 pci_am5[15: 8] <= w_conf_pdata_reduced[15: 8] ;
2226 end
2227 if (w_reg_select_dec[26]) // case (w_conf_address[7:2]) = `P_TA5_ADDR:
2228 begin
2229 if (~w_byte_en[3])
2230 pci_ta5[31:24] <= w_conf_pdata_reduced[31:24] ;
2231 if (~w_byte_en[2])
2232 pci_ta5[23:16] <= w_conf_pdata_reduced[23:16] ;
2233 if (~w_byte_en[1])
2234 pci_ta5[15: 8] <= w_conf_pdata_reduced[15: 8] ;
2235 end
2236 `endif
2237 if (w_reg_select_dec[27]) // case (w_conf_address[7:2]) = `P_ERR_CS_ADDR:
2238 begin
2239 if (~w_byte_en[0])
2240 pci_err_cs_bit0 <= w_conf_data[0] ;
2241 end
2242 // WB slave - configuration space
2243 if (w_reg_select_dec[30]) // case (w_conf_address[7:2]) = `W_IMG_CTRL1_ADDR:
2244 begin
2245 if (~w_byte_en[0])
2246 wb_img_ctrl1_bit2_0 <= w_conf_data[2:0] ;
2247 end
2248 if (w_reg_select_dec[31]) // case (w_conf_address[7:2]) = `W_BA1_ADDR:
2249 begin
2250 if (~w_byte_en[3])
2251 wb_ba1_bit31_12[31:24] <= w_conf_wdata_reduced[31:24] ;
2252 if (~w_byte_en[2])
2253 wb_ba1_bit31_12[23:16] <= w_conf_wdata_reduced[23:16] ;
2254 if (~w_byte_en[1])
2255 wb_ba1_bit31_12[15:12] <= w_conf_wdata_reduced[15:12] ;
2256 if (~w_byte_en[0])
2257 wb_ba1_bit0 <= w_conf_data[0] ;
2258 end
2259 if (w_reg_select_dec[32]) // case (w_conf_address[7:2]) = `W_AM1_ADDR:
2260 begin
2261 if (~w_byte_en[3])
2262 wb_am1[31:24] <= w_conf_wdata_reduced[31:24] ;
2263 if (~w_byte_en[2])
2264 wb_am1[23:16] <= w_conf_wdata_reduced[23:16] ;
2265 if (~w_byte_en[1])
2266 wb_am1[15:12] <= w_conf_wdata_reduced[15:12] ;
2267 end
2268 if (w_reg_select_dec[33]) // case (w_conf_address[7:2]) = `W_TA1_ADDR:
2269 begin
2270 if (~w_byte_en[3])
2271 wb_ta1[31:24] <= w_conf_wdata_reduced[31:24] ;
2272 if (~w_byte_en[2])
2273 wb_ta1[23:16] <= w_conf_wdata_reduced[23:16] ;
2274 if (~w_byte_en[1])
2275 wb_ta1[15:12] <= w_conf_wdata_reduced[15:12] ;
2276 end
2277 `ifdef WB_IMAGE2
2278 if (w_reg_select_dec[34]) // case (w_conf_address[7:2]) = `W_IMG_CTRL2_ADDR:
2279 begin
2280 if (~w_byte_en[0])
2281 wb_img_ctrl2_bit2_0 <= w_conf_data[2:0] ;
2282 end
2283 if (w_reg_select_dec[35]) // case (w_conf_address[7:2]) = `W_BA2_ADDR:
2284 begin
2285 if (~w_byte_en[3])
2286 wb_ba2_bit31_12[31:24] <= w_conf_wdata_reduced[31:24] ;
2287 if (~w_byte_en[2])
2288 wb_ba2_bit31_12[23:16] <= w_conf_wdata_reduced[23:16] ;
2289 if (~w_byte_en[1])
2290 wb_ba2_bit31_12[15:12] <= w_conf_wdata_reduced[15:12] ;
2291 if (~w_byte_en[0])
2292 wb_ba2_bit0 <= w_conf_data[0] ;
2293 end
2294 if (w_reg_select_dec[36]) // case (w_conf_address[7:2]) = `W_AM2_ADDR:
2295 begin
2296 if (~w_byte_en[3])
2297 wb_am2[31:24] <= w_conf_wdata_reduced[31:24] ;
2298 if (~w_byte_en[2])
2299 wb_am2[23:16] <= w_conf_wdata_reduced[23:16] ;
2300 if (~w_byte_en[1])
2301 wb_am2[15:12] <= w_conf_wdata_reduced[15:12] ;
2302 end
2303 if (w_reg_select_dec[37]) // case (w_conf_address[7:2]) = `W_TA2_ADDR:
2304 begin
2305 if (~w_byte_en[3])
2306 wb_ta2[31:24] <= w_conf_wdata_reduced[31:24] ;
2307 if (~w_byte_en[2])
2308 wb_ta2[23:16] <= w_conf_wdata_reduced[23:16] ;
2309 if (~w_byte_en[1])
2310 wb_ta2[15:12] <= w_conf_wdata_reduced[15:12] ;
2311 end
2312 `endif
2313 `ifdef WB_IMAGE3
2314 if (w_reg_select_dec[38]) // case (w_conf_address[7:2]) = `W_IMG_CTRL3_ADDR:
2315 begin
2316 if (~w_byte_en[0])
2317 wb_img_ctrl3_bit2_0 <= w_conf_data[2:0] ;
2318 end
2319 if (w_reg_select_dec[39]) // case (w_conf_address[7:2]) = `W_BA3_ADDR:
2320 begin
2321 if (~w_byte_en[3])
2322 wb_ba3_bit31_12[31:24] <= w_conf_wdata_reduced[31:24] ;
2323 if (~w_byte_en[2])
2324 wb_ba3_bit31_12[23:16] <= w_conf_wdata_reduced[23:16] ;
2325 if (~w_byte_en[1])
2326 wb_ba3_bit31_12[15:12] <= w_conf_wdata_reduced[15:12] ;
2327 if (~w_byte_en[0])
2328 wb_ba3_bit0 <= w_conf_data[0] ;
2329 end
2330 if (w_reg_select_dec[40]) // case (w_conf_address[7:2]) = `W_AM3_ADDR:
2331 begin
2332 if (~w_byte_en[3])
2333 wb_am3[31:24] <= w_conf_wdata_reduced[31:24] ;
2334 if (~w_byte_en[2])
2335 wb_am3[23:16] <= w_conf_wdata_reduced[23:16] ;
2336 if (~w_byte_en[1])
2337 wb_am3[15:12] <= w_conf_wdata_reduced[15:12] ;
2338 end
2339 if (w_reg_select_dec[41]) // case (w_conf_address[7:2]) = `W_TA3_ADDR:
2340 begin
2341 if (~w_byte_en[3])
2342 wb_ta3[31:24] <= w_conf_wdata_reduced[31:24] ;
2343 if (~w_byte_en[2])
2344 wb_ta3[23:16] <= w_conf_wdata_reduced[23:16] ;
2345 if (~w_byte_en[1])
2346 wb_ta3[15:12] <= w_conf_wdata_reduced[15:12] ;
2347 end
2348 `endif
2349 `ifdef WB_IMAGE4
2350 if (w_reg_select_dec[42]) // case (w_conf_address[7:2]) = `W_IMG_CTRL4_ADDR:
2351 begin
2352 if (~w_byte_en[0])
2353 wb_img_ctrl4_bit2_0 <= w_conf_data[2:0] ;
2354 end
2355 if (w_reg_select_dec[43]) // case (w_conf_address[7:2]) = `W_BA4_ADDR:
2356 begin
2357 if (~w_byte_en[3])
2358 wb_ba4_bit31_12[31:24] <= w_conf_wdata_reduced[31:24] ;
2359 if (~w_byte_en[2])
2360 wb_ba4_bit31_12[23:16] <= w_conf_wdata_reduced[23:16] ;
2361 if (~w_byte_en[1])
2362 wb_ba4_bit31_12[15:12] <= w_conf_wdata_reduced[15:12] ;
2363 if (~w_byte_en[0])
2364 wb_ba4_bit0 <= w_conf_data[0] ;
2365 end
2366 if (w_reg_select_dec[44]) // case (w_conf_address[7:2]) = `W_AM4_ADDR:
2367 begin
2368 if (~w_byte_en[3])
2369 wb_am4[31:24] <= w_conf_wdata_reduced[31:24] ;
2370 if (~w_byte_en[2])
2371 wb_am4[23:16] <= w_conf_wdata_reduced[23:16] ;
2372 if (~w_byte_en[1])
2373 wb_am4[15:12] <= w_conf_wdata_reduced[15:12] ;
2374 end
2375 if (w_reg_select_dec[45]) // case (w_conf_address[7:2]) = `W_TA4_ADDR:
2376 begin
2377 if (~w_byte_en[3])
2378 wb_ta4[31:24] <= w_conf_wdata_reduced[31:24] ;
2379 if (~w_byte_en[2])
2380 wb_ta4[23:16] <= w_conf_wdata_reduced[23:16] ;
2381 if (~w_byte_en[1])
2382 wb_ta4[15:12] <= w_conf_wdata_reduced[15:12] ;
2383 end
2384 `endif
2385 `ifdef WB_IMAGE5
2386 if (w_reg_select_dec[46]) // case (w_conf_address[7:2]) = `W_IMG_CTRL5_ADDR:
2387 begin
2388 if (~w_byte_en[0])
2389 wb_img_ctrl5_bit2_0 <= w_conf_data[2:0] ;
2390 end
2391 if (w_reg_select_dec[47]) // case (w_conf_address[7:2]) = `W_BA5_ADDR:
2392 begin
2393 if (~w_byte_en[3])
2394 wb_ba5_bit31_12[31:24] <= w_conf_wdata_reduced[31:24] ;
2395 if (~w_byte_en[2])
2396 wb_ba5_bit31_12[23:16] <= w_conf_wdata_reduced[23:16] ;
2397 if (~w_byte_en[1])
2398 wb_ba5_bit31_12[15:12] <= w_conf_wdata_reduced[15:12] ;
2399 if (~w_byte_en[0])
2400 wb_ba5_bit0 <= w_conf_data[0] ;
2401 end
2402 if (w_reg_select_dec[48]) // case (w_conf_address[7:2]) = `W_AM5_ADDR:
2403 begin
2404 if (~w_byte_en[3])
2405 wb_am5[31:24] <= w_conf_wdata_reduced[31:24] ;
2406 if (~w_byte_en[2])
2407 wb_am5[23:16] <= w_conf_wdata_reduced[23:16] ;
2408 if (~w_byte_en[1])
2409 wb_am5[15:12] <= w_conf_wdata_reduced[15:12] ;
2410 end
2411 if (w_reg_select_dec[49]) // case (w_conf_address[7:2]) = `W_TA5_ADDR:
2412 begin
2413 if (~w_byte_en[3])
2414 wb_ta5[31:24] <= w_conf_wdata_reduced[31:24] ;
2415 if (~w_byte_en[2])
2416 wb_ta5[23:16] <= w_conf_wdata_reduced[23:16] ;
2417 if (~w_byte_en[1])
2418 wb_ta5[15:12] <= w_conf_wdata_reduced[15:12] ;
2419 end
2420 `endif
2421 if (w_reg_select_dec[50]) // case (w_conf_address[7:2]) = `W_ERR_CS_ADDR:
2422 begin
2423 if (~w_byte_en[0])
2424 wb_err_cs_bit0 <= w_conf_data[0] ;
2425 end
2426
2427 `ifdef HOST
2428 if (w_reg_select_dec[53]) // case (w_conf_address[7:2]) = `CNF_ADDR_ADDR:
2429 begin
2430 if (~w_byte_en[2])
2431 cnf_addr_bit23_2[23:16] <= w_conf_data[23:16] ;
2432 if (~w_byte_en[1])
2433 cnf_addr_bit23_2[15:8] <= w_conf_data[15:8] ;
2434 if (~w_byte_en[0])
2435 begin
2436 cnf_addr_bit23_2[7:2] <= w_conf_data[7:2] ;
2437 cnf_addr_bit0 <= w_conf_data[0] ;
2438 end
2439 end
2440 `endif
2441 // `CNF_DATA_ADDR: implemented elsewhere !!!
2442 // `INT_ACK_ADDR : implemented elsewhere !!!
2443 if (w_reg_select_dec[54]) // case (w_conf_address[7:2]) = `ICR_ADDR:
2444 begin
2445 if (~w_byte_en[3])
2446 icr_bit31 <= w_conf_data[31] ;
2447
2448 if (~w_byte_en[0])
2449 begin
2450 `ifdef HOST
2451 icr_bit4_3 <= w_conf_data[4:3] ;
2452 icr_bit2_0 <= w_conf_data[2:0] ;
2453 `else
2454 icr_bit2_0[2:0] <= w_conf_data[2:0] ;
2455 `endif
2456 end
2457 end
2458
2459 `ifdef PCI_CPCI_HS_IMPLEMENT
2460 if (w_reg_select_dec[56])
2461 begin
2462 if (~w_byte_en[2])
2463 begin
2464 hs_loo <= w_conf_data[19];
2465 hs_eim <= w_conf_data[17];
2466 end
2467 end
2468 `endif
2469 end // end of we
2470
2471 // Not register bits; used only internally after reset!
2472 `ifdef GUEST
2473 rst_inactive_sync <= 1'b1 ;
2474 rst_inactive <= rst_inactive_sync ;
2475 `endif
2476
2477 if (rst_inactive & ~init_complete & init_cfg_done)
2478 init_complete <= 1'b1 ;
2479 end
2480 end
2481
2482 // implementation of read only device identification registers
2483 always@(posedge w_clock or posedge reset)
2484 begin
2485 if (reset)
2486 begin
2487 r_vendor_id <= `HEADER_VENDOR_ID ;
2488 r_device_id <= `HEADER_DEVICE_ID ;
2489 r_revision_id <= `HEADER_REVISION_ID ;
2490 r_subsys_vendor_id <= `HEADER_SUBSYS_VENDOR_ID ;
2491 r_subsys_id <= `HEADER_SUBSYS_ID ;
2492 r_max_lat <= `HEADER_MAX_LAT ;
2493 r_min_gnt <= `HEADER_MIN_GNT ;
2494 end else
2495 begin
2496 if (init_we)
2497 begin
2498 if (spoci_reg_num == 'h0)
2499 begin
2500 r_vendor_id <= spoci_dat[15: 0] ;
2501 r_device_id <= spoci_dat[31:16] ;
2502 end
2503
2504 if (spoci_reg_num == 'hB)
2505 begin
2506 r_subsys_vendor_id <= spoci_dat[15: 0] ;
2507 r_subsys_id <= spoci_dat[31:16] ;
2508 end
2509
2510 if (spoci_reg_num == 'h2)
2511 begin
2512 r_revision_id <= spoci_dat[ 7: 0] ;
2513 end
2514
2515 if (spoci_reg_num == 'hF)
2516 begin
2517 r_max_lat <= spoci_dat[31:24] ;
2518 r_min_gnt <= spoci_dat[23:16] ;
2519 end
2520 end
2521 end
2522 end
2523
2524 // This signals are synchronous resets for registers, whic occures when asynchronous RESET is '1' or
2525 // data '1' is synchronously written into them!
2526 reg delete_status_bit15 ;
2527 reg delete_status_bit14 ;
2528 reg delete_status_bit13 ;
2529 reg delete_status_bit12 ;
2530 reg delete_status_bit11 ;
2531 reg delete_status_bit8 ;
2532 reg delete_pci_err_cs_bit8 ;
2533 reg delete_wb_err_cs_bit8 ;
2534 reg delete_isr_bit4 ;
2535 reg delete_isr_bit3 ;
2536 reg delete_isr_bit2 ;
2537 reg delete_isr_bit1 ;
2538
2539 // This are aditional register bits, which are resets when their value is '1' !!!
2540 always@(w_we or w_reg_select_dec or w_conf_data or w_byte_en)
2541 begin
2542 // I' is written into, then it also sets signals to '1'
2543 delete_status_bit15 = w_conf_data[31] & !w_byte_en[3] & w_we & w_reg_select_dec[0] ;
2544 delete_status_bit14 = w_conf_data[30] & !w_byte_en[3] & w_we & w_reg_select_dec[0] ;
2545 delete_status_bit13 = w_conf_data[29] & !w_byte_en[3] & w_we & w_reg_select_dec[0] ;
2546 delete_status_bit12 = w_conf_data[28] & !w_byte_en[3] & w_we & w_reg_select_dec[0] ;
2547 delete_status_bit11 = w_conf_data[27] & !w_byte_en[3] & w_we & w_reg_select_dec[0] ;
2548 delete_status_bit8 = w_conf_data[24] & !w_byte_en[3] & w_we & w_reg_select_dec[0] ;
2549 delete_pci_err_cs_bit8 = w_conf_data[8] & !w_byte_en[1] & w_we & w_reg_select_dec[27] ;
2550 delete_wb_err_cs_bit8 = w_conf_data[8] & !w_byte_en[1] & w_we & w_reg_select_dec[50] ;
2551 delete_isr_bit4 = w_conf_data[4] & !w_byte_en[0] & w_we & w_reg_select_dec[55] ;
2552 delete_isr_bit3 = w_conf_data[3] & !w_byte_en[0] & w_we & w_reg_select_dec[55] ;
2553 delete_isr_bit2 = w_conf_data[2] & !w_byte_en[0] & w_we & w_reg_select_dec[55] ;
2554 delete_isr_bit1 = w_conf_data[1] & !w_byte_en[0] & w_we & w_reg_select_dec[55] ;
2555 end
2556
2557 // STATUS BITS of PCI Header status register
2558 `ifdef SYNCHRONEOUS_CLOCK_DOMAINS
2559 // Set and clear FF
2560 always@(posedge pci_clk or posedge reset)
2561 begin
2562 if (reset) // Asynchronous reset
2563 status_bit15_11[15] <= 1'b0 ;
2564 else
2565 begin
2566 if (perr_in) // Synchronous set
2567 status_bit15_11[15] <= 1'b1 ;
2568 else if (delete_status_bit15) // Synchronous reset
2569 status_bit15_11[15] <= 1'b0 ;
2570 end
2571 end
2572 // Set and clear FF
2573 always@(posedge pci_clk or posedge reset)
2574 begin
2575 if (reset) // Asynchronous reset
2576 status_bit15_11[14] <= 1'b0 ;
2577 else
2578 begin
2579 if (serr_in) // Synchronous set
2580 status_bit15_11[14] <= 1'b1 ;
2581 else if (delete_status_bit14) // Synchronous reset
2582 status_bit15_11[14] <= 1'b0 ;
2583 end
2584 end
2585 // Set and clear FF
2586 always@(posedge pci_clk or posedge reset)
2587 begin
2588 if (reset) // Asynchronous reset
2589 status_bit15_11[13] <= 1'b0 ;
2590 else
2591 begin
2592 if (master_abort_recv) // Synchronous set
2593 status_bit15_11[13] <= 1'b1 ;
2594 else if (delete_status_bit13) // Synchronous reset
2595 status_bit15_11[13] <= 1'b0 ;
2596 end
2597 end
2598 // Set and clear FF
2599 always@(posedge pci_clk or posedge reset)
2600 begin
2601 if (reset) // Asynchronous reset
2602 status_bit15_11[12] <= 1'b0 ;
2603 else
2604 begin
2605 if (target_abort_recv) // Synchronous set
2606 status_bit15_11[12] <= 1'b1 ;
2607 else if (delete_status_bit12) // Synchronous reset
2608 status_bit15_11[12] <= 1'b0 ;
2609 end
2610 end
2611 // Set and clear FF
2612 always@(posedge pci_clk or posedge reset)
2613 begin
2614 if (reset) // Asynchronous reset
2615 status_bit15_11[11] <= 1'b0 ;
2616 else
2617 begin
2618 if (target_abort_set) // Synchronous set
2619 status_bit15_11[11] <= 1'b1 ;
2620 else if (delete_status_bit11) // Synchronous reset
2621 status_bit15_11[11] <= 1'b0 ;
2622 end
2623 end
2624 // Set and clear FF
2625 always@(posedge pci_clk or posedge reset)
2626 begin
2627 if (reset) // Asynchronous reset
2628 status_bit8 <= 1'b0 ;
2629 else
2630 begin
2631 if (master_data_par_err) // Synchronous set
2632 status_bit8 <= 1'b1 ;
2633 else if (delete_status_bit8) // Synchronous reset
2634 status_bit8 <= 1'b0 ;
2635 end
2636 end
2637 `else // not SYNCHRONEOUS_CLOCK_DOMAINS
2638 `ifdef HOST
2639 reg [15:11] set_status_bit15_11;
2640 reg set_status_bit8;
2641 wire delete_set_status_bit15;
2642 wire delete_set_status_bit14;
2643 wire delete_set_status_bit13;
2644 wire delete_set_status_bit12;
2645 wire delete_set_status_bit11;
2646 wire delete_set_status_bit8;
2647 wire block_set_status_bit15;
2648 wire block_set_status_bit14;
2649 wire block_set_status_bit13;
2650 wire block_set_status_bit12;
2651 wire block_set_status_bit11;
2652 wire block_set_status_bit8;
2653 // Synchronization module for clearing FF between two clock domains
2654 pci_sync_module sync_status_15
2655 (
2656 .set_clk_in (pci_clk),
2657 .delete_clk_in (wb_clk),
2658 .reset_in (reset),
2659 .delete_set_out (delete_set_status_bit15),
2660 .block_set_out (block_set_status_bit15),
2661 .delete_in (delete_status_bit15)
2662 );
2663 // Setting FF
2664 always@(posedge pci_clk or posedge reset)
2665 begin
2666 if (reset) // Asynchronous reset
2667 set_status_bit15_11[15] <= 1'b0 ;
2668 else
2669 begin
2670 if (perr_in) // Synchronous set
2671 set_status_bit15_11[15] <= 1'b1 ;
2672 else if (delete_set_status_bit15) // Synchronous reset
2673 set_status_bit15_11[15] <= 1'b0 ;
2674 end
2675 end
2676 // Synchronization module for clearing FF between two clock domains
2677 pci_sync_module sync_status_14
2678 (
2679 .set_clk_in (pci_clk),
2680 .delete_clk_in (wb_clk),
2681 .reset_in (reset),
2682 .delete_set_out (delete_set_status_bit14),
2683 .block_set_out (block_set_status_bit14),
2684 .delete_in (delete_status_bit14)
2685 );
2686 // Setting FF
2687 always@(posedge pci_clk or posedge reset)
2688 begin
2689 if (reset) // Asynchronous reset
2690 set_status_bit15_11[14] <= 1'b0 ;
2691 else
2692 begin
2693 if (serr_in) // Synchronous set
2694 set_status_bit15_11[14] <= 1'b1 ;
2695 else if (delete_set_status_bit14) // Synchronous reset
2696 set_status_bit15_11[14] <= 1'b0 ;
2697 end
2698 end
2699 // Synchronization module for clearing FF between two clock domains
2700 pci_sync_module sync_status_13
2701 (
2702 .set_clk_in (pci_clk),
2703 .delete_clk_in (wb_clk),
2704 .reset_in (reset),
2705 .delete_set_out (delete_set_status_bit13),
2706 .block_set_out (block_set_status_bit13),
2707 .delete_in (delete_status_bit13)
2708 );
2709 // Setting FF
2710 always@(posedge pci_clk or posedge reset)
2711 begin
2712 if (reset) // Asynchronous reset
2713 set_status_bit15_11[13] <= 1'b0 ;
2714 else
2715 begin
2716 if (master_abort_recv) // Synchronous set
2717 set_status_bit15_11[13] <= 1'b1 ;
2718 else if (delete_set_status_bit13) // Synchronous reset
2719 set_status_bit15_11[13] <= 1'b0 ;
2720 end
2721 end
2722 // Synchronization module for clearing FF between two clock domains
2723 pci_sync_module sync_status_12
2724 (
2725 .set_clk_in (pci_clk),
2726 .delete_clk_in (wb_clk),
2727 .reset_in (reset),
2728 .delete_set_out (delete_set_status_bit12),
2729 .block_set_out (block_set_status_bit12),
2730 .delete_in (delete_status_bit12)
2731 );
2732 // Setting FF
2733 always@(posedge pci_clk or posedge reset)
2734 begin
2735 if (reset) // Asynchronous reset
2736 set_status_bit15_11[12] <= 1'b0 ;
2737 else
2738 begin
2739 if (target_abort_recv) // Synchronous set
2740 set_status_bit15_11[12] <= 1'b1 ;
2741 else if (delete_set_status_bit12) // Synchronous reset
2742 set_status_bit15_11[12] <= 1'b0 ;
2743 end
2744 end
2745 // Synchronization module for clearing FF between two clock domains
2746 pci_sync_module sync_status_11
2747 (
2748 .set_clk_in (pci_clk),
2749 .delete_clk_in (wb_clk),
2750 .reset_in (reset),
2751 .delete_set_out (delete_set_status_bit11),
2752 .block_set_out (block_set_status_bit11),
2753 .delete_in (delete_status_bit11)
2754 );
2755 // Setting FF
2756 always@(posedge pci_clk or posedge reset)
2757 begin
2758 if (reset) // Asynchronous reset
2759 set_status_bit15_11[11] <= 1'b0 ;
2760 else
2761 begin
2762 if (target_abort_set) // Synchronous set
2763 set_status_bit15_11[11] <= 1'b1 ;
2764 else if (delete_set_status_bit11) // Synchronous reset
2765 set_status_bit15_11[11] <= 1'b0 ;
2766 end
2767 end
2768 // Synchronization module for clearing FF between two clock domains
2769 pci_sync_module sync_status_8
2770 (
2771 .set_clk_in (pci_clk),
2772 .delete_clk_in (wb_clk),
2773 .reset_in (reset),
2774 .delete_set_out (delete_set_status_bit8),
2775 .block_set_out (block_set_status_bit8),
2776 .delete_in (delete_status_bit8)
2777 );
2778 // Setting FF
2779 always@(posedge pci_clk or posedge reset)
2780 begin
2781 if (reset) // Asynchronous reset
2782 set_status_bit8 <= 1'b0 ;
2783 else
2784 begin
2785 if (master_data_par_err) // Synchronous set
2786 set_status_bit8 <= 1'b1 ;
2787 else if (delete_set_status_bit8) // Synchronous reset
2788 set_status_bit8 <= 1'b0 ;
2789 end
2790 end
2791 wire [5:0] status_bits = {set_status_bit15_11[15] && !block_set_status_bit15,
2792 set_status_bit15_11[14] && !block_set_status_bit14,
2793 set_status_bit15_11[13] && !block_set_status_bit13,
2794 set_status_bit15_11[12] && !block_set_status_bit12,
2795 set_status_bit15_11[11] && !block_set_status_bit11,
2796 set_status_bit8 && !block_set_status_bit8 } ;
2797 wire [5:0] meta_status_bits ;
2798 // interemediate stage to clk synchronization flip - flops - this ones are prone to metastability
2799 pci_synchronizer_flop #(6, 0) status_bits_sync
2800 (
2801 .data_in (status_bits),
2802 .clk_out (wb_clk),
2803 .sync_data_out (meta_status_bits),
2804 .async_reset (reset)
2805 ) ;
2806 always@(posedge wb_clk or posedge reset)
2807 begin
2808 if (reset)
2809 begin
2810 status_bit15_11[15:11] <= 5'b0 ;
2811 status_bit8 <= 1'b0 ;
2812 end
2813 else
2814 begin
2815 status_bit15_11[15:11] <= meta_status_bits[5:1] ;
2816 status_bit8 <= meta_status_bits[0] ;
2817 end
2818 end
2819 `else // GUEST
2820 // Set and clear FF
2821 always@(posedge pci_clk or posedge reset)
2822 begin
2823 if (reset) // Asynchronous reset
2824 status_bit15_11[15] <= 1'b0 ;
2825 else
2826 begin
2827 if (perr_in) // Synchronous set
2828 status_bit15_11[15] <= 1'b1 ;
2829 else if (delete_status_bit15) // Synchronous reset
2830 status_bit15_11[15] <= 1'b0 ;
2831 end
2832 end
2833 // Set and clear FF
2834 always@(posedge pci_clk or posedge reset)
2835 begin
2836 if (reset) // Asynchronous reset
2837 status_bit15_11[14] <= 1'b0 ;
2838 else
2839 begin
2840 if (serr_in) // Synchronous set
2841 status_bit15_11[14] <= 1'b1 ;
2842 else if (delete_status_bit14) // Synchronous reset
2843 status_bit15_11[14] <= 1'b0 ;
2844 end
2845 end
2846 // Set and clear FF
2847 always@(posedge pci_clk or posedge reset)
2848 begin
2849 if (reset) // Asynchronous reset
2850 status_bit15_11[13] <= 1'b0 ;
2851 else
2852 begin
2853 if (master_abort_recv) // Synchronous set
2854 status_bit15_11[13] <= 1'b1 ;
2855 else if (delete_status_bit13) // Synchronous reset
2856 status_bit15_11[13] <= 1'b0 ;
2857 end
2858 end
2859 // Set and clear FF
2860 always@(posedge pci_clk or posedge reset)
2861 begin
2862 if (reset) // Asynchronous reset
2863 status_bit15_11[12] <= 1'b0 ;
2864 else
2865 begin
2866 if (target_abort_recv) // Synchronous set
2867 status_bit15_11[12] <= 1'b1 ;
2868 else if (delete_status_bit12) // Synchronous reset
2869 status_bit15_11[12] <= 1'b0 ;
2870 end
2871 end
2872 // Set and clear FF
2873 always@(posedge pci_clk or posedge reset)
2874 begin
2875 if (reset) // Asynchronous reset
2876 status_bit15_11[11] <= 1'b0 ;
2877 else
2878 begin
2879 if (target_abort_set) // Synchronous set
2880 status_bit15_11[11] <= 1'b1 ;
2881 else if (delete_status_bit11) // Synchronous reset
2882 status_bit15_11[11] <= 1'b0 ;
2883 end
2884 end
2885 // Set and clear FF
2886 always@(posedge pci_clk or posedge reset)
2887 begin
2888 if (reset) // Asynchronous reset
2889 status_bit8 <= 1'b0 ;
2890 else
2891 begin
2892 if (master_data_par_err) // Synchronous set
2893 status_bit8 <= 1'b1 ;
2894 else if (delete_status_bit8) // Synchronous reset
2895 status_bit8 <= 1'b0 ;
2896 end
2897 end
2898 `endif
2899 `endif
2900
2901 // STATUS BITS of P_ERR_CS - PCI error control and status register
2902 `ifdef SYNCHRONEOUS_CLOCK_DOMAINS
2903 // Set and clear FF
2904 always@(posedge pci_clk or posedge reset)
2905 begin
2906 if (reset) // Asynchronous reset
2907 pci_err_cs_bit8 <= 1'b0 ;
2908 else
2909 begin
2910 if (pci_error_sig && pci_err_cs_bit0) // Synchronous set
2911 pci_err_cs_bit8 <= 1'b1 ;
2912 else if (delete_pci_err_cs_bit8) // Synchronous reset
2913 pci_err_cs_bit8 <= 1'b0 ;
2914 end
2915 end
2916 `else // not SYNCHRONEOUS_CLOCK_DOMAINS
2917 `ifdef HOST
2918 // Set and clear FF
2919 always@(posedge wb_clk or posedge reset)
2920 begin
2921 if (reset) // Asynchronous reset
2922 pci_err_cs_bit8 <= 1'b0 ;
2923 else
2924 begin
2925 if (pci_error_sig && pci_err_cs_bit0) // Synchronous set
2926 pci_err_cs_bit8 <= 1'b1 ;
2927 else if (delete_pci_err_cs_bit8) // Synchronous reset
2928 pci_err_cs_bit8 <= 1'b0 ;
2929 end
2930 end
2931 `else // GUEST
2932 reg set_pci_err_cs_bit8;
2933 wire delete_set_pci_err_cs_bit8;
2934 wire block_set_pci_err_cs_bit8;
2935 // Synchronization module for clearing FF between two clock domains
2936 pci_sync_module sync_pci_err_cs_8
2937 (
2938 .set_clk_in (wb_clk),
2939 .delete_clk_in (pci_clk),
2940 .reset_in (reset),
2941 .delete_set_out (delete_set_pci_err_cs_bit8),
2942 .block_set_out (block_set_pci_err_cs_bit8),
2943 .delete_in (delete_pci_err_cs_bit8)
2944 );
2945 // Setting FF
2946 always@(posedge wb_clk or posedge reset)
2947 begin
2948 if (reset) // Asynchronous reset
2949 set_pci_err_cs_bit8 <= 1'b0 ;
2950 else
2951 begin
2952 if (pci_error_sig && pci_err_cs_bit0) // Synchronous set
2953 set_pci_err_cs_bit8 <= 1'b1 ;
2954 else if (delete_set_pci_err_cs_bit8) // Synchronous reset
2955 set_pci_err_cs_bit8 <= 1'b0 ;
2956 end
2957 end
2958 wire pci_err_cs_bits = set_pci_err_cs_bit8 && !block_set_pci_err_cs_bit8 ;
2959 wire meta_pci_err_cs_bits ;
2960 // interemediate stage to clk synchronization flip - flops - this ones are prone to metastability
2961 pci_synchronizer_flop #(1,0) pci_err_cs_bits_sync
2962 (
2963 .data_in (pci_err_cs_bits),
2964 .clk_out (pci_clk),
2965 .sync_data_out (meta_pci_err_cs_bits),
2966 .async_reset (reset)
2967 ) ;
2968 always@(posedge pci_clk or posedge reset)
2969 begin
2970 if (reset)
2971 pci_err_cs_bit8 <= 1'b0 ;
2972 else
2973 pci_err_cs_bit8 <= meta_pci_err_cs_bits ;
2974 end
2975 `endif
2976 `endif
2977 // Set and clear FF
2978 always@(posedge wb_clk or posedge reset)
2979 begin
2980 if (reset) // Asynchronous reset
2981 pci_err_cs_bit10 <= 1'b0 ;
2982 else
2983 begin
2984 if (pci_error_sig) // Synchronous report
2985 pci_err_cs_bit10 <= pci_error_rty_exp ;
2986 end
2987 end
2988 // Set and clear FF
2989 always@(posedge wb_clk or posedge reset)
2990 begin
2991 if (reset) // Asynchronous reset
2992 pci_err_cs_bit9 <= 1'b0 ;
2993 else
2994 begin
2995 if (pci_error_sig) // Synchronous report
2996 pci_err_cs_bit9 <= pci_error_es ;
2997 end
2998 end
2999 // Set and clear FF
3000 always@(posedge wb_clk or posedge reset)
3001 begin
3002 if (reset) // Asynchronous reset
3003 begin
3004 pci_err_cs_bit31_24 <= 8'h00 ;
3005 pci_err_addr <= 32'h0000_0000 ;
3006 pci_err_data <= 32'h0000_0000 ;
3007 end
3008 else
3009 if (pci_error_sig) // Synchronous report
3010 begin
3011 pci_err_cs_bit31_24 <= { pci_error_be, pci_error_bc } ;
3012 pci_err_addr <= pci_error_addr ;
3013 pci_err_data <= pci_error_data ;
3014 end
3015 end
3016
3017 // STATUS BITS of W_ERR_CS - WB error control and status register
3018 `ifdef SYNCHRONEOUS_CLOCK_DOMAINS
3019 // Set and clear FF
3020 always@(posedge pci_clk or posedge reset)
3021 begin
3022 if (reset) // Asynchronous reset
3023 wb_err_cs_bit8 <= 1'b0 ;
3024 else
3025 begin
3026 if (wb_error_sig && wb_err_cs_bit0) // Synchronous set
3027 wb_err_cs_bit8 <= 1'b1 ;
3028 else if (delete_wb_err_cs_bit8) // Synchronous reset
3029 wb_err_cs_bit8 <= 1'b0 ;
3030 end
3031 end
3032 `else // not SYNCHRONEOUS_CLOCK_DOMAINS
3033 `ifdef HOST
3034 reg set_wb_err_cs_bit8;
3035 wire delete_set_wb_err_cs_bit8;
3036 wire block_set_wb_err_cs_bit8;
3037 // Synchronization module for clearing FF between two clock domains
3038 pci_sync_module sync_wb_err_cs_8
3039 (
3040 .set_clk_in (pci_clk),
3041 .delete_clk_in (wb_clk),
3042 .reset_in (reset),
3043 .delete_set_out (delete_set_wb_err_cs_bit8),
3044 .block_set_out (block_set_wb_err_cs_bit8),
3045 .delete_in (delete_wb_err_cs_bit8)
3046 );
3047 // Setting FF
3048 always@(posedge pci_clk or posedge reset)
3049 begin
3050 if (reset) // Asynchronous reset
3051 set_wb_err_cs_bit8 <= 1'b0 ;
3052 else
3053 begin
3054 if (wb_error_sig && wb_err_cs_bit0) // Synchronous set
3055 set_wb_err_cs_bit8 <= 1'b1 ;
3056 else if (delete_set_wb_err_cs_bit8) // Synchronous reset
3057 set_wb_err_cs_bit8 <= 1'b0 ;
3058 end
3059 end
3060 wire wb_err_cs_bits = set_wb_err_cs_bit8 && !block_set_wb_err_cs_bit8 ;
3061 wire meta_wb_err_cs_bits ;
3062 // interemediate stage to clk synchronization flip - flops - this ones are prone to metastability
3063 pci_synchronizer_flop #(1,0) wb_err_cs_bits_sync
3064 (
3065 .data_in (wb_err_cs_bits),
3066 .clk_out (wb_clk),
3067 .sync_data_out (meta_wb_err_cs_bits),
3068 .async_reset (reset)
3069 ) ;
3070 always@(posedge wb_clk or posedge reset)
3071 begin
3072 if (reset)
3073 wb_err_cs_bit8 <= 1'b0 ;
3074 else
3075 wb_err_cs_bit8 <= meta_wb_err_cs_bits ;
3076 end
3077 `else // GUEST
3078 // Set and clear FF
3079 always@(posedge pci_clk or posedge reset)
3080 begin
3081 if (reset) // Asynchronous reset
3082 wb_err_cs_bit8 <= 1'b0 ;
3083 else
3084 begin
3085 if (wb_error_sig && wb_err_cs_bit0) // Synchronous set
3086 wb_err_cs_bit8 <= 1'b1 ;
3087 else if (delete_wb_err_cs_bit8) // Synchronous reset
3088 wb_err_cs_bit8 <= 1'b0 ;
3089 end
3090 end
3091 `endif
3092 `endif
3093 /* // Set and clear FF
3094 always@(posedge pci_clk or posedge reset)
3095 begin
3096 if (reset) // Asynchronous reset
3097 wb_err_cs_bit10 <= 1'b0 ;
3098 else
3099 begin
3100 if (wb_error_sig) // Synchronous report
3101 wb_err_cs_bit10 <= wb_error_rty_exp ;
3102 end
3103 end */
3104 // Set and clear FF
3105 always@(posedge pci_clk or posedge reset)
3106 begin
3107 if (reset) // Asynchronous reset
3108 wb_err_cs_bit9 <= 1'b0 ;
3109 else
3110 begin
3111 if (wb_error_sig) // Synchronous report
3112 wb_err_cs_bit9 <= wb_error_es ;
3113 end
3114 end
3115 // Set and clear FF
3116 always@(posedge pci_clk or posedge reset)
3117 begin
3118 if (reset) // Asynchronous reset
3119 begin
3120 wb_err_cs_bit31_24 <= 8'h00 ;
3121 wb_err_addr <= 32'h0000_0000 ;
3122 wb_err_data <= 32'h0000_0000 ;
3123 end
3124 else
3125 if (wb_error_sig)
3126 begin
3127 wb_err_cs_bit31_24 <= { wb_error_be, wb_error_bc } ;
3128 wb_err_addr <= wb_error_addr ;
3129 wb_err_data <= wb_error_data ;
3130 end
3131 end
3132
3133 // SERR_INT and PERR_INT STATUS BITS of ISR - interrupt status register
3134 `ifdef SYNCHRONEOUS_CLOCK_DOMAINS
3135 `ifdef HOST
3136 // Set and clear FF
3137 always@(posedge pci_clk or posedge reset)
3138 begin
3139 if (reset) // Asynchronous reset
3140 isr_bit4_3[4] <= 1'b0 ;
3141 else
3142 begin
3143 if (isr_sys_err_int && icr_bit4_3[4]) // Synchronous set
3144 isr_bit4_3[4] <= 1'b1 ;
3145 else if (delete_isr_bit4) // Synchronous reset
3146 isr_bit4_3[4] <= 1'b0 ;
3147 end
3148 end
3149 // Set and clear FF
3150 always@(posedge pci_clk or posedge reset)
3151 begin
3152 if (reset) // Asynchronous reset
3153 isr_bit4_3[3] <= 1'b0 ;
3154 else
3155 begin
3156 if (isr_par_err_int && icr_bit4_3[3]) // Synchronous set
3157 isr_bit4_3[3] <= 1'b1 ;
3158 else if (delete_isr_bit3) // Synchronous reset
3159 isr_bit4_3[3] <= 1'b0 ;
3160 end
3161 end
3162 `endif
3163 `else // not SYNCHRONEOUS_CLOCK_DOMAINS
3164 `ifdef HOST
3165 reg [4:3] set_isr_bit4_3;
3166 wire delete_set_isr_bit4;
3167 wire delete_set_isr_bit3;
3168 wire block_set_isr_bit4;
3169 wire block_set_isr_bit3;
3170 // Synchronization module for clearing FF between two clock domains
3171 pci_sync_module sync_isr_4
3172 (
3173 .set_clk_in (pci_clk),
3174 .delete_clk_in (wb_clk),
3175 .reset_in (reset),
3176 .delete_set_out (delete_set_isr_bit4),
3177 .block_set_out (block_set_isr_bit4),
3178 .delete_in (delete_isr_bit4)
3179 );
3180 // Setting FF
3181 always@(posedge pci_clk or posedge reset)
3182 begin
3183 if (reset) // Asynchronous reset
3184 set_isr_bit4_3[4] <= 1'b0 ;
3185 else
3186 begin
3187 if (isr_sys_err_int && icr_bit4_3[4]) // Synchronous set
3188 set_isr_bit4_3[4] <= 1'b1 ;
3189 else if (delete_set_isr_bit4) // Synchronous reset
3190 set_isr_bit4_3[4] <= 1'b0 ;
3191 end
3192 end
3193 // Synchronization module for clearing FF between two clock domains
3194 pci_sync_module sync_isr_3
3195 (
3196 .set_clk_in (pci_clk),
3197 .delete_clk_in (wb_clk),
3198 .reset_in (reset),
3199 .delete_set_out (delete_set_isr_bit3),
3200 .block_set_out (block_set_isr_bit3),
3201 .delete_in (delete_isr_bit3)
3202 );
3203 // Setting FF
3204 always@(posedge pci_clk or posedge reset)
3205 begin
3206 if (reset) // Asynchronous reset
3207 set_isr_bit4_3[3] <= 1'b0 ;
3208 else
3209 begin
3210 if (isr_par_err_int && icr_bit4_3[3]) // Synchronous set
3211 set_isr_bit4_3[3] <= 1'b1 ;
3212 else if (delete_set_isr_bit3) // Synchronous reset
3213 set_isr_bit4_3[3] <= 1'b0 ;
3214 end
3215 end
3216 wire [4:3] isr_bits4_3 = {set_isr_bit4_3[4] && !block_set_isr_bit4,
3217 set_isr_bit4_3[3] && !block_set_isr_bit3 } ;
3218 wire [4:3] meta_isr_bits4_3 ;
3219 // interemediate stage to clk synchronization flip - flops - this ones are prone to metastability
3220 pci_synchronizer_flop #(2, 0) isr_bits_sync
3221 (
3222 .data_in (isr_bits4_3),
3223 .clk_out (wb_clk),
3224 .sync_data_out (meta_isr_bits4_3),
3225 .async_reset (reset)
3226 ) ;
3227 always@(posedge wb_clk or posedge reset)
3228 begin
3229 if (reset)
3230 isr_bit4_3[4:3] <= 2'b0 ;
3231 else
3232 isr_bit4_3[4:3] <= meta_isr_bits4_3[4:3] ;
3233 end
3234 `endif
3235 `endif
3236
3237 // PCI_EINT and WB_EINT STATUS BITS of ISR - interrupt status register
3238 `ifdef SYNCHRONEOUS_CLOCK_DOMAINS
3239 // WB_EINT STATUS BIT
3240 // Set and clear FF
3241 always@(posedge pci_clk or posedge reset)
3242 begin
3243 if (reset) // Asynchronous reset
3244 isr_bit2_0[1] <= 1'b0 ;
3245 else
3246 begin
3247 if (wb_error_sig && icr_bit2_0[1] && wb_err_cs_bit0) // Synchronous set
3248 isr_bit2_0[1] <= 1'b1 ;
3249 else if (delete_isr_bit1) // Synchronous reset
3250 isr_bit2_0[1] <= 1'b0 ;
3251 end
3252 end
3253 // PCI_EINT STATUS BIT
3254 // Set and clear FF
3255 always@(posedge pci_clk or posedge reset)
3256 begin
3257 if (reset) // Asynchronous reset
3258 isr_bit2_0[2] <= 1'b0 ;
3259 else
3260 begin
3261 if (pci_error_sig && icr_bit2_0[2] && pci_err_cs_bit0) // Synchronous set
3262 isr_bit2_0[2] <= 1'b1 ;
3263 else if (delete_isr_bit2) // Synchronous reset
3264 isr_bit2_0[2] <= 1'b0 ;
3265 end
3266 end
3267 `else // not SYNCHRONEOUS_CLOCK_DOMAINS
3268 `ifdef HOST
3269 // WB_EINT STATUS BIT
3270 reg set_isr_bit1;
3271 wire delete_set_isr_bit1;
3272 wire block_set_isr_bit1;
3273 // Synchronization module for clearing FF between two clock domains
3274 pci_sync_module sync_isr_1
3275 (
3276 .set_clk_in (pci_clk),
3277 .delete_clk_in (wb_clk),
3278 .reset_in (reset),
3279 .delete_set_out (delete_set_isr_bit1),
3280 .block_set_out (block_set_isr_bit1),
3281 .delete_in (delete_isr_bit1)
3282 );
3283 // Setting FF
3284 always@(posedge pci_clk or posedge reset)
3285 begin
3286 if (reset) // Asynchronous reset
3287 set_isr_bit1 <= 1'b0 ;
3288 else
3289 begin
3290 if (wb_error_sig && icr_bit2_0[1] && wb_err_cs_bit0) // Synchronous set
3291 set_isr_bit1 <= 1'b1 ;
3292 else if (delete_set_isr_bit1) // Synchronous reset
3293 set_isr_bit1 <= 1'b0 ;
3294 end
3295 end
3296 wire isr_bit1 = set_isr_bit1 && !block_set_isr_bit1 ;
3297 wire meta_isr_bit1 ;
3298 // interemediate stage to clk synchronization flip - flops - this ones are prone to metastability
3299 pci_synchronizer_flop #(1, 0) isr_bit1_sync
3300 (
3301 .data_in (isr_bit1),
3302 .clk_out (wb_clk),
3303 .sync_data_out (meta_isr_bit1),
3304 .async_reset (reset)
3305 ) ;
3306 always@(posedge wb_clk or posedge reset)
3307 begin
3308 if (reset)
3309 isr_bit2_0[1] <= 1'b0 ;
3310 else
3311 isr_bit2_0[1] <= meta_isr_bit1 ;
3312 end
3313 // PCI_EINT STATUS BIT
3314 // Set and clear FF
3315 always@(posedge wb_clk or posedge reset)
3316 begin
3317 if (reset) // Asynchronous reset
3318 isr_bit2_0[2] <= 1'b0 ;
3319 else
3320 begin
3321 if (pci_error_sig && icr_bit2_0[2] && pci_err_cs_bit0) // Synchronous set
3322 isr_bit2_0[2] <= 1'b1 ;
3323 else if (delete_isr_bit2) // Synchronous reset
3324 isr_bit2_0[2] <= 1'b0 ;
3325 end
3326 end
3327 `else // GUEST
3328 // WB_EINT STATUS BIT
3329 // Set and clear FF
3330 always@(posedge pci_clk or posedge reset)
3331 begin
3332 if (reset) // Asynchronous reset
3333 isr_bit2_0[1] <= 1'b0 ;
3334 else
3335 begin
3336 if (wb_error_sig && icr_bit2_0[1] && wb_err_cs_bit0) // Synchronous set
3337 isr_bit2_0[1] <= 1'b1 ;
3338 else if (delete_isr_bit1) // Synchronous reset
3339 isr_bit2_0[1] <= 1'b0 ;
3340 end
3341 end
3342 // PCI_EINT STATUS BIT
3343 reg set_isr_bit2;
3344 wire delete_set_isr_bit2;
3345 wire block_set_isr_bit2;
3346 // Synchronization module for clearing FF between two clock domains
3347 pci_sync_module sync_isr_2
3348 (
3349 .set_clk_in (wb_clk),
3350 .delete_clk_in (pci_clk),
3351 .reset_in (reset),
3352 .delete_set_out (delete_set_isr_bit2),
3353 .block_set_out (block_set_isr_bit2),
3354 .delete_in (delete_isr_bit2)
3355 );
3356 // Setting FF
3357 always@(posedge wb_clk or posedge reset)
3358 begin
3359 if (reset) // Asynchronous reset
3360 set_isr_bit2 <= 1'b0 ;
3361 else
3362 begin
3363 if (pci_error_sig && icr_bit2_0[2] && pci_err_cs_bit0) // Synchronous set
3364 set_isr_bit2 <= 1'b1 ;
3365 else if (delete_set_isr_bit2) // Synchronous reset
3366 set_isr_bit2 <= 1'b0 ;
3367 end
3368 end
3369 wire isr_bit2 = set_isr_bit2 && !block_set_isr_bit2 ;
3370 wire meta_isr_bit2 ;
3371 // interemediate stage to clk synchronization flip - flops - this ones are prone to metastability
3372 pci_synchronizer_flop #(1, 0) isr_bit2_sync
3373 (
3374 .data_in (isr_bit2),
3375 .clk_out (pci_clk),
3376 .sync_data_out (meta_isr_bit2),
3377 .async_reset (reset)
3378 ) ;
3379 always@(posedge pci_clk or posedge reset)
3380 begin
3381 if (reset)
3382 isr_bit2_0[2] <= 1'b0 ;
3383 else
3384 isr_bit2_0[2] <= meta_isr_bit2 ;
3385 end
3386 `endif
3387 `endif
3388
3389 // INT BIT of ISR - interrupt status register
3390 `ifdef HOST
3391 wire isr_int_prop_bit = isr_int_prop && icr_bit2_0[0] ;
3392 wire meta_isr_int_prop_bit ;
3393 // interemediate stage to clk synchronization flip - flops - this ones are prone to metastability
3394 pci_synchronizer_flop #(1, 0) isr_bit0_sync
3395 (
3396 .data_in (isr_int_prop_bit),
3397 .clk_out (wb_clk),
3398 .sync_data_out (meta_isr_int_prop_bit),
3399 .async_reset (reset)
3400 ) ;
3401 always@(posedge wb_clk or posedge reset)
3402 begin
3403 if (reset)
3404 isr_bit2_0[0] <= 1'b0 ;
3405 else
3406 isr_bit2_0[0] <= meta_isr_int_prop_bit ;
3407 end
3408 `else // GUEST
3409 `ifdef SYNCHRONEOUS_CLOCK_DOMAINS
3410 wire isr_int_prop_bit = isr_int_prop && icr_bit2_0[0] ;
3411 always@(posedge pci_clk or posedge reset)
3412 begin
3413 if (reset)
3414 isr_bit2_0[0] <= 1'b0 ;
3415 else
3416 isr_bit2_0[0] <= isr_int_prop_bit ;
3417 end
3418 `else // not SYNCHRONEOUS_CLOCK_DOMAINS
3419 wire isr_int_prop_bit = isr_int_prop && icr_bit2_0[0] ;
3420 wire meta_isr_int_prop_bit ;
3421 // interemediate stage to clk synchronization flip - flops - this ones are prone to metastability
3422 pci_synchronizer_flop #(1, 0) isr_bit0_sync
3423 (
3424 .data_in (isr_int_prop_bit),
3425 .clk_out (pci_clk),
3426 .sync_data_out (meta_isr_int_prop_bit),
3427 .async_reset (reset)
3428 ) ;
3429 always@(posedge pci_clk or posedge reset)
3430 begin
3431 if (reset)
3432 isr_bit2_0[0] <= 1'b0 ;
3433 else
3434 isr_bit2_0[0] <= meta_isr_int_prop_bit ;
3435 end
3436 `endif
3437 `endif
3438
3439 // INT PIN
3440 wire int_in;
3441 wire int_meta;
3442 reg interrupt_out;
3443 `ifdef HOST
3444 `ifdef SYNCHRONEOUS_CLOCK_DOMAINS
3445 assign int_in = isr_int_prop_bit || isr_bit2_0[1] || isr_bit2_0[2] || isr_bit4_3[3] || isr_bit4_3[4];
3446 `else // not SYNCHRONEOUS_CLOCK_DOMAINS
3447 assign int_in = isr_int_prop_bit || isr_bit1 || isr_bit2_0[2] || isr_bits4_3[3] || isr_bits4_3[4];
3448 `endif
3449 // interemediate stage to clk synchronization flip - flops - this ones are prone to metastability
3450 pci_synchronizer_flop #(1, 0) int_pin_sync
3451 (
3452 .data_in (int_in),
3453 .clk_out (wb_clk),
3454 .sync_data_out (int_meta),
3455 .async_reset (reset)
3456 ) ;
3457 always@(posedge wb_clk or posedge reset)
3458 begin
3459 if (reset)
3460 interrupt_out <= 1'b0 ;
3461 else
3462 interrupt_out <= int_meta ;
3463 end
3464 `else // GUEST
3465 `ifdef SYNCHRONEOUS_CLOCK_DOMAINS
3466 assign int_in = isr_int_prop_bit || isr_bit2_0[1] || isr_bit2_0[2];
3467 `else // not SYNCHRONEOUS_CLOCK_DOMAINS
3468 assign int_in = isr_int_prop_bit || isr_bit2_0[1] || isr_bit2;
3469 `endif
3470 // interemediate stage to clk synchronization flip - flops - this ones are prone to metastability
3471 pci_synchronizer_flop #(1, 0) int_pin_sync
3472 (
3473 .data_in (int_in),
3474 .clk_out (pci_clk),
3475 .sync_data_out (int_meta),
3476 .async_reset (reset)
3477 ) ;
3478 always@(posedge pci_clk or posedge reset)
3479 begin
3480 if (reset)
3481 interrupt_out <= 1'b0 ;
3482 else
3483 interrupt_out <= int_meta ;
3484 end
3485 `endif
3486
3487
3488 `ifdef PCI_CPCI_HS_IMPLEMENT
3489 reg [hs_es_cnt_width - 1:0] hs_es_cnt ; // debounce counter
3490 reg hs_es_in_state, // current state of ejector switch input - synchronized
3491 hs_es_sync, // synchronization flop for ejector switch input
3492 hs_es_cur_state ; // current valid state of ejector switch
3493
3494 `ifdef ACTIVE_HIGH_OE
3495 wire oe_active_val = 1'b1 ;
3496 `endif
3497
3498 `ifdef ACTIVE_LOW_OE
3499 wire oe_active_val = 1'b0 ;
3500 `endif
3501
3502 always@(posedge pci_clk or posedge reset)
3503 begin
3504 if (reset)
3505 begin
3506 hs_ins <= 1'b0 ;
3507 hs_ins_armed <= 1'b1 ;
3508 hs_ext <= 1'b0 ;
3509 hs_ext_armed <= 1'b0 ;
3510 hs_es_in_state <= 1'b0 ;
3511 hs_es_sync <= 1'b0 ;
3512 hs_es_cur_state <= 1'b0 ;
3513 hs_es_cnt <= 'h0 ;
3514
3515 `ifdef ACTIVE_LOW_OE
3516 pci_cpci_hs_enum_oe_o <= 1'b1 ;
3517 pci_cpci_hs_led_oe_o <= 1'b0 ;
3518 `endif
3519
3520 `ifdef ACTIVE_HIGH_OE
3521 pci_cpci_hs_enum_oe_o <= 1'b0 ;
3522 pci_cpci_hs_led_oe_o <= 1'b1 ;
3523 `endif
3524
3525 end
3526 else
3527 begin
3528 // INS
3529 if (hs_ins)
3530 begin
3531 if (w_conf_data[23] & ~w_byte_en[2] & w_we & w_reg_select_dec[56]) // clear
3532 hs_ins <= 1'b0 ;
3533 end
3534 else if (hs_ins_armed) // set
3535 hs_ins <= init_complete & (hs_es_cur_state == 1'b1) ;
3536
3537 // INS armed
3538 if (~hs_ins & hs_ins_armed & init_complete & (hs_es_cur_state == 1'b1)) // clear
3539 hs_ins_armed <= 1'b0 ;
3540 else if (hs_ext) // set
3541 hs_ins_armed <= w_conf_data[22] & ~w_byte_en[2] & w_we & w_reg_select_dec[56] ;
3542
3543 // EXT
3544 if (hs_ext) // clear
3545 begin
3546 if (w_conf_data[22] & ~w_byte_en[2] & w_we & w_reg_select_dec[56])
3547 hs_ext <= 1'b0 ;
3548 end
3549 else if (hs_ext_armed) // set
3550 hs_ext <= (hs_es_cur_state == 1'b0) ;
3551
3552 // EXT armed
3553 if (~hs_ext & hs_ext_armed & (hs_es_cur_state == 1'b0)) // clear
3554 hs_ext_armed <= 1'b0 ;
3555 else if (hs_ins) // set
3556 hs_ext_armed <= w_conf_data[23] & !w_byte_en[2] & w_we & w_reg_select_dec[56] ;
3557
3558 // ejector switch debounce counter logic
3559 hs_es_sync <= pci_cpci_hs_es_i ;
3560 hs_es_in_state <= hs_es_sync ;
3561
3562 if (hs_es_in_state == hs_es_cur_state)
3563 hs_es_cnt <= 'h0 ;
3564 else
3565 hs_es_cnt <= hs_es_cnt + 1'b1 ;
3566
3567 if (hs_es_cnt == {hs_es_cnt_width{1'b1}})
3568 hs_es_cur_state <= hs_es_in_state ;
3569
3570 if ((hs_ins | hs_ext) & ~hs_eim)
3571 pci_cpci_hs_enum_oe_o <= oe_active_val ;
3572 else
3573 pci_cpci_hs_enum_oe_o <= ~oe_active_val ;
3574
3575 if (~init_complete | hs_loo)
3576 pci_cpci_hs_led_oe_o <= oe_active_val ;
3577 else
3578 pci_cpci_hs_led_oe_o <= ~oe_active_val ;
3579 end
3580 end
3581 `endif
3582
3583 `ifdef PCI_SPOCI
3584
3585 wire spoci_write_done,
3586 spoci_dat_rdy ,
3587 spoci_no_ack ;
3588
3589 wire [ 7: 0] spoci_wdat ;
3590 wire [ 7: 0] spoci_rdat ;
3591
3592 // power on configuration control and status register
3593 always@(posedge pci_clk or posedge reset)
3594 begin
3595 if (reset)
3596 begin
3597 spoci_cs_nack <= 1'b0 ;
3598 spoci_cs_write <= 1'b0 ;
3599 spoci_cs_read <= 1'b0 ;
3600 spoci_cs_adr <= 'h0 ;
3601 spoci_cs_dat <= 'h0 ;
3602 end
3603 else
3604 begin
3605 if (spoci_cs_write)
3606 begin
3607 if (spoci_write_done | spoci_no_ack)
3608 spoci_cs_write <= 1'b0 ;
3609 end
3610 else if ( w_we & (w_conf_address[9:2] == 8'hFF) & ~w_byte_en[3])
3611 spoci_cs_write <= w_conf_data[25] ;
3612
3613 if (spoci_cs_read)
3614 begin
3615 if (spoci_dat_rdy | spoci_no_ack)
3616 spoci_cs_read <= 1'b0 ;
3617 end
3618 else if ( w_we & (w_conf_address[9:2] == 8'hFF) & ~w_byte_en[3] )
3619 spoci_cs_read <= w_conf_data[24] ;
3620
3621 if (spoci_cs_nack)
3622 begin
3623 if ( w_we & (w_conf_address[9:2] == 8'hFF) & ~w_byte_en[3] & w_conf_data[31] )
3624 spoci_cs_nack <= 1'b0 ;
3625 end
3626 else if (spoci_cs_write | spoci_cs_read | ~init_cfg_done)
3627 begin
3628 spoci_cs_nack <= spoci_no_ack ;
3629 end
3630
3631 if ( w_we & (w_conf_address[9:2] == 8'hFF) )
3632 begin
3633 if (~w_byte_en[2])
3634 spoci_cs_adr[10: 8] <= w_conf_data[18:16] ;
3635
3636 if (~w_byte_en[1])
3637 spoci_cs_adr[ 7: 0] <= w_conf_data[15: 8] ;
3638 end
3639
3640 if ( w_we & (w_conf_address[9:2] == 8'hFF) & ~w_byte_en[0] )
3641 spoci_cs_dat <= w_conf_data[ 7: 0] ;
3642 else if (spoci_cs_read & spoci_dat_rdy)
3643 spoci_cs_dat <= spoci_rdat ;
3644
3645 end
3646 end
3647
3648 reg [ 2 : 0] bytes_received ;
3649
3650 always@(posedge pci_clk or posedge reset)
3651 begin
3652 if (reset)
3653 begin
3654 init_we <= 1'b0 ;
3655 init_cfg_done <= 1'b0 ;
3656 bytes_received <= 1'b0 ;
3657 spoci_dat <= 'h0 ;
3658 spoci_reg_num <= 'h0 ;
3659 end
3660 else if (~init_cfg_done)
3661 begin
3662 if (spoci_dat_rdy)
3663 begin
3664 case (bytes_received)
3665 'h0:spoci_reg_num <= spoci_rdat ;
3666 'h1:spoci_dat[ 7: 0] <= spoci_rdat ;
3667 'h2:spoci_dat[15: 8] <= spoci_rdat ;
3668 'h3:spoci_dat[23:16] <= spoci_rdat ;
3669 'h4:spoci_dat[31:24] <= spoci_rdat ;
3670 default:
3671 begin
3672 spoci_dat <= 32'hxxxx_xxxx ;
3673 spoci_reg_num <= 'hxx ;
3674 end
3675 endcase
3676 end
3677
3678 if (init_we)
3679 bytes_received <= 'h0 ;
3680 else if (spoci_dat_rdy)
3681 bytes_received <= bytes_received + 1'b1 ;
3682
3683 if (init_we)
3684 init_we <= 1'b0 ;
3685 else if (bytes_received == 'h5)
3686 init_we <= 1'b1 ;
3687
3688 if (spoci_no_ack | ((bytes_received == 'h1) & (spoci_reg_num == 'hff)) )
3689 init_cfg_done <= 1'b1 ;
3690 end
3691 end
3692
3693 assign spoci_wdat = spoci_cs_dat ;
3694
3695 pci_spoci_ctrl i_pci_spoci_ctrl
3696 (
3697 .reset_i (reset ),
3698 .clk_i (pci_clk ),
3699
3700 .do_rnd_read_i (spoci_cs_read ),
3701 .do_seq_read_i (rst_inactive & ~init_cfg_done ),
3702 .do_write_i (spoci_cs_write ),
3703
3704 .write_done_o (spoci_write_done ),
3705 .dat_rdy_o (spoci_dat_rdy ),
3706 .no_ack_o (spoci_no_ack ),
3707
3708 .adr_i (spoci_cs_adr ),
3709 .dat_i (spoci_wdat ),
3710 .dat_o (spoci_rdat ),
3711
3712 .pci_spoci_sda_i (spoci_sda_i ),
3713 .pci_spoci_sda_oe_o (spoci_sda_oe_o ),
3714 .pci_spoci_scl_oe_o (spoci_scl_oe_o )
3715 );
3716 `endif
3717
3718 /*-----------------------------------------------------------------------------------------------------------
3719 OUTPUTs from registers !!!
3720 -----------------------------------------------------------------------------------------------------------*/
3721
3722 // if bridge is HOST then write clock is equal to WB clock, and synchronization of outputs has to be done
3723 `ifdef HOST
3724 wire [3:0] command_bits = {command_bit8, command_bit6, command_bit2_0[1:0]} ;
3725 wire [3:0] meta_command_bits ;
3726 reg [3:0] sync_command_bits ;
3727 pci_synchronizer_flop #(4, 0) command_bits_sync
3728 (
3729 .data_in (command_bits),
3730 .clk_out (pci_clk),
3731 .sync_data_out (meta_command_bits),
3732 .async_reset (reset)
3733 ) ;
3734 always@(posedge pci_clk or posedge reset)
3735 begin
3736 if (reset)
3737 sync_command_bits <= 4'b0 ;
3738 else
3739 sync_command_bits <= meta_command_bits ;
3740 end
3741 wire sync_command_bit8 = sync_command_bits[3] ;
3742 wire sync_command_bit6 = sync_command_bits[2] ;
3743 wire sync_command_bit1 = sync_command_bits[1] ;
3744 wire sync_command_bit0 = sync_command_bits[0] ;
3745 wire sync_command_bit2 = command_bit2_0[2] ;
3746 `else // GUEST
3747 wire command_bit = command_bit2_0[2] ;
3748 wire meta_command_bit ;
3749 reg sync_command_bit ;
3750 pci_synchronizer_flop #(1, 0) command_bit_sync
3751 (
3752 .data_in (command_bit),
3753 .clk_out (pci_clk),
3754 .sync_data_out (meta_command_bit),
3755 .async_reset (reset)
3756 ) ;
3757 always@(posedge pci_clk or posedge reset)
3758 begin
3759 if (reset)
3760 sync_command_bit <= 1'b0 ;
3761 else
3762 sync_command_bit <= meta_command_bit ;
3763 end
3764 wire sync_command_bit8 = command_bit8 ;
3765 wire sync_command_bit6 = command_bit6 ;
3766 wire sync_command_bit1 = command_bit2_0[1] ;
3767 wire sync_command_bit0 = command_bit2_0[0] ;
3768 wire sync_command_bit2 = sync_command_bit ;
3769 `endif
3770 // PCI header outputs from command register
3771 assign serr_enable = sync_command_bit8 & pci_init_complete_out ; // to PCI clock
3772 assign perr_response = sync_command_bit6 & pci_init_complete_out ; // to PCI clock
3773 assign pci_master_enable = sync_command_bit2 & wb_init_complete_out ; // to WB clock
3774 assign memory_space_enable = sync_command_bit1 & pci_init_complete_out ; // to PCI clock
3775 assign io_space_enable = sync_command_bit0 & pci_init_complete_out ; // to PCI clock
3776
3777 // if bridge is HOST then write clock is equal to WB clock, and synchronization of outputs has to be done
3778 // We don't support cache line sizes smaller that 4 and it must have last two bits zero!!!
3779 wire cache_lsize_not_zero = ((cache_line_size_reg[7] || cache_line_size_reg[6] || cache_line_size_reg[5] ||
3780 cache_line_size_reg[4] || cache_line_size_reg[3] || cache_line_size_reg[2]) &&
3781 (!cache_line_size_reg[1] && !cache_line_size_reg[0]) );
3782 `ifdef HOST
3783 wire [7:2] cache_lsize_to_pci_bits = { cache_line_size_reg[7:2] } ;
3784 wire [7:2] meta_cache_lsize_to_pci_bits ;
3785 reg [7:2] sync_cache_lsize_to_pci_bits ;
3786 pci_synchronizer_flop #(6, 0) cache_lsize_to_pci_bits_sync
3787 (
3788 .data_in (cache_lsize_to_pci_bits),
3789 .clk_out (pci_clk),
3790 .sync_data_out (meta_cache_lsize_to_pci_bits),
3791 .async_reset (reset)
3792 ) ;
3793 always@(posedge pci_clk or posedge reset)
3794 begin
3795 if (reset)
3796 sync_cache_lsize_to_pci_bits <= 6'b0 ;
3797 else
3798 sync_cache_lsize_to_pci_bits <= meta_cache_lsize_to_pci_bits ;
3799 end
3800 wire [7:2] sync_cache_line_size_to_pci_reg = sync_cache_lsize_to_pci_bits[7:2] ;
3801 wire [7:2] sync_cache_line_size_to_wb_reg = cache_line_size_reg[7:2] ;
3802 wire sync_cache_lsize_not_zero_to_wb = cache_lsize_not_zero ;
3803 // Latency timer is sinchronized only to PCI clock when bridge implementation is HOST
3804 wire [7:0] latency_timer_bits = latency_timer ;
3805 wire [7:0] meta_latency_timer_bits ;
3806 reg [7:0] sync_latency_timer_bits ;
3807 pci_synchronizer_flop #(8, 0) latency_timer_bits_sync
3808 (
3809 .data_in (latency_timer_bits),
3810 .clk_out (pci_clk),
3811 .sync_data_out (meta_latency_timer_bits),
3812 .async_reset (reset)
3813 ) ;
3814 always@(posedge pci_clk or posedge reset)
3815 begin
3816 if (reset)
3817 sync_latency_timer_bits <= 8'b0 ;
3818 else
3819 sync_latency_timer_bits <= meta_latency_timer_bits ;
3820 end
3821 wire [7:0] sync_latency_timer = sync_latency_timer_bits ;
3822 `else // GUEST
3823 wire [8:2] cache_lsize_to_wb_bits = { cache_lsize_not_zero, cache_line_size_reg[7:2] } ;
3824 wire [8:2] meta_cache_lsize_to_wb_bits ;
3825 reg [8:2] sync_cache_lsize_to_wb_bits ;
3826 pci_synchronizer_flop #(7, 0) cache_lsize_to_wb_bits_sync
3827 (
3828 .data_in (cache_lsize_to_wb_bits),
3829 .clk_out (wb_clk),
3830 .sync_data_out (meta_cache_lsize_to_wb_bits),
3831 .async_reset (reset)
3832 ) ;
3833 always@(posedge wb_clk or posedge reset)
3834 begin
3835 if (reset)
3836 sync_cache_lsize_to_wb_bits <= 7'b0 ;
3837 else
3838 sync_cache_lsize_to_wb_bits <= meta_cache_lsize_to_wb_bits ;
3839 end
3840 wire [7:2] sync_cache_line_size_to_pci_reg = cache_line_size_reg[7:2] ;
3841 wire [7:2] sync_cache_line_size_to_wb_reg = sync_cache_lsize_to_wb_bits[7:2] ;
3842 wire sync_cache_lsize_not_zero_to_wb = sync_cache_lsize_to_wb_bits[8] ;
3843 // Latency timer
3844 wire [7:0] sync_latency_timer = latency_timer ;
3845 `endif
3846 // PCI header output from cache_line_size, latency timer and interrupt pin
3847 assign cache_line_size_to_pci = {sync_cache_line_size_to_pci_reg, 2'h0} ; // [7 : 0] to PCI clock
3848 assign cache_line_size_to_wb = {sync_cache_line_size_to_wb_reg, 2'h0} ; // [7 : 0] to WB clock
3849 assign cache_lsize_not_zero_to_wb = sync_cache_lsize_not_zero_to_wb ;
3850
3851 assign latency_tim[7 : 0] = sync_latency_timer ; // to PCI clock
3852 //assign int_pin[2 : 0] = r_interrupt_pin ;
3853 assign int_out = interrupt_out ;
3854 // PCI output from image registers
3855 // base address, address mask, translation address and control registers are sinchronized in PCI_DECODER.V module
3856 `ifdef HOST
3857 `ifdef NO_CNF_IMAGE
3858 assign pci_base_addr0 = pci_ba0_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
3859 `else
3860 assign pci_base_addr0 = pci_ba0_bit31_8[31:12] ;
3861 `endif
3862 `endif
3863
3864 `ifdef GUEST
3865 assign pci_base_addr0 = pci_ba0_bit31_8[31:12] ;
3866 `endif
3867
3868 assign pci_base_addr1 = pci_ba1_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
3869 assign pci_base_addr2 = pci_ba2_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
3870 assign pci_base_addr3 = pci_ba3_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
3871 assign pci_base_addr4 = pci_ba4_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
3872 assign pci_base_addr5 = pci_ba5_bit31_8[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
3873 assign pci_memory_io0 = pci_ba0_bit0 ;
3874 assign pci_memory_io1 = pci_ba1_bit0 ;
3875 assign pci_memory_io2 = pci_ba2_bit0 ;
3876 assign pci_memory_io3 = pci_ba3_bit0 ;
3877 assign pci_memory_io4 = pci_ba4_bit0 ;
3878 assign pci_memory_io5 = pci_ba5_bit0 ;
3879
3880 assign pci_addr_mask0 = pci_am0[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
3881 assign pci_addr_mask1 = pci_am1[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
3882 assign pci_addr_mask2 = pci_am2[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
3883 assign pci_addr_mask3 = pci_am3[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
3884 assign pci_addr_mask4 = pci_am4[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
3885 assign pci_addr_mask5 = pci_am5[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
3886 assign pci_tran_addr0 = pci_ta0[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
3887 assign pci_tran_addr1 = pci_ta1[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
3888 assign pci_tran_addr2 = pci_ta2[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
3889 assign pci_tran_addr3 = pci_ta3[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
3890 assign pci_tran_addr4 = pci_ta4[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
3891 assign pci_tran_addr5 = pci_ta5[31:(32-`PCI_NUM_OF_DEC_ADDR_LINES)] ;
3892 assign pci_img_ctrl0[2 : 1] = pci_img_ctrl0_bit2_1 ;
3893 assign pci_img_ctrl1[2 : 1] = pci_img_ctrl1_bit2_1 ;
3894 assign pci_img_ctrl2[2 : 1] = pci_img_ctrl2_bit2_1 ;
3895 assign pci_img_ctrl3[2 : 1] = pci_img_ctrl3_bit2_1 ;
3896 assign pci_img_ctrl4[2 : 1] = pci_img_ctrl4_bit2_1 ;
3897 assign pci_img_ctrl5[2 : 1] = pci_img_ctrl5_bit2_1 ;
3898 // WISHBONE output from image registers
3899 // base address, address mask, translation address and control registers are sinchronized in DECODER.V module
3900 assign wb_base_addr0 = wb_ba0_bit31_12[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
3901 assign wb_base_addr1 = wb_ba1_bit31_12[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
3902 assign wb_base_addr2 = wb_ba2_bit31_12[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
3903 assign wb_base_addr3 = wb_ba3_bit31_12[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
3904 assign wb_base_addr4 = wb_ba4_bit31_12[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
3905 assign wb_base_addr5 = wb_ba5_bit31_12[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
3906 assign wb_memory_io0 = wb_ba0_bit0 ;
3907 assign wb_memory_io1 = wb_ba1_bit0 ;
3908 assign wb_memory_io2 = wb_ba2_bit0 ;
3909 assign wb_memory_io3 = wb_ba3_bit0 ;
3910 assign wb_memory_io4 = wb_ba4_bit0 ;
3911 assign wb_memory_io5 = wb_ba5_bit0 ;
3912 assign wb_addr_mask0 = wb_am0[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
3913 assign wb_addr_mask1 = wb_am1[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
3914 assign wb_addr_mask2 = wb_am2[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
3915 assign wb_addr_mask3 = wb_am3[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
3916 assign wb_addr_mask4 = wb_am4[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
3917 assign wb_addr_mask5 = wb_am5[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
3918 assign wb_tran_addr0 = wb_ta0[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
3919 assign wb_tran_addr1 = wb_ta1[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
3920 assign wb_tran_addr2 = wb_ta2[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
3921 assign wb_tran_addr3 = wb_ta3[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
3922 assign wb_tran_addr4 = wb_ta4[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
3923 assign wb_tran_addr5 = wb_ta5[31:(32-`WB_NUM_OF_DEC_ADDR_LINES)] ;
3924 assign wb_img_ctrl0[2 : 0] = wb_img_ctrl0_bit2_0 ;
3925 assign wb_img_ctrl1[2 : 0] = wb_img_ctrl1_bit2_0 ;
3926 assign wb_img_ctrl2[2 : 0] = wb_img_ctrl2_bit2_0 ;
3927 assign wb_img_ctrl3[2 : 0] = wb_img_ctrl3_bit2_0 ;
3928 assign wb_img_ctrl4[2 : 0] = wb_img_ctrl4_bit2_0 ;
3929 assign wb_img_ctrl5[2 : 0] = wb_img_ctrl5_bit2_0 ;
3930 // GENERAL output from conf. cycle generation register & int. control register
3931 assign config_addr[23 : 0] = { cnf_addr_bit23_2, 1'b0, cnf_addr_bit0 } ;
3932 assign icr_soft_res = icr_bit31 ;
3933
3934 endmodule
3935
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