Commit | Line | Data |
---|---|---|
86530b38 AT |
1 | // ========== Copyright Header Begin ========================================== |
2 | // | |
3 | // OpenSPARC T2 Processor File: niu_rx_descp_cr.vr | |
4 | // Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved | |
5 | // 4150 Network Circle, Santa Clara, California 95054, U.S.A. | |
6 | // | |
7 | // * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
8 | // | |
9 | // This program is free software; you can redistribute it and/or modify | |
10 | // it under the terms of the GNU General Public License as published by | |
11 | // the Free Software Foundation; version 2 of the License. | |
12 | // | |
13 | // This program is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | // | |
18 | // You should have received a copy of the GNU General Public License | |
19 | // along with this program; if not, write to the Free Software | |
20 | // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | // | |
22 | // For the avoidance of doubt, and except that if any non-GPL license | |
23 | // choice is available it will apply instead, Sun elects to use only | |
24 | // the General Public License version 2 (GPLv2) at this time for any | |
25 | // software where a choice of GPL license versions is made | |
26 | // available with the language indicating that GPLv2 or any later version | |
27 | // may be used, or where a choice of which version of the GPL is applied is | |
28 | // otherwise unspecified. | |
29 | // | |
30 | // Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
31 | // CA 95054 USA or visit www.sun.com if you need additional information or | |
32 | // have any questions. | |
33 | // | |
34 | // ========== Copyright Header End ============================================ | |
35 | #include <vera_defines.vrh> | |
36 | #include <ListMacros.vrh> | |
37 | #include "niu_mem.vrh" | |
38 | #include "pcg_defines.vri" | |
39 | #include "pcg_types.vri" | |
40 | ||
41 | #include "pg_top_pp.vrh" | |
42 | #include "pc_top_pp.vrh" | |
43 | #include "pcg_token.vrh" | |
44 | #include "niu_rxtoken.vrh" | |
45 | #include "niu_mem.vrh" | |
46 | #include "cMesg.vrh" | |
47 | #include "niu_cbclass.vrh" | |
48 | #include "hostRdCbMgr.vrh" | |
49 | #include "niu_rx_crentry.vrh" | |
50 | #include "mac_pio_class.vrh" | |
51 | ||
52 | extern CSparseMem SparseMem; | |
53 | extern mac_pio_cl mac_pio_class; | |
54 | ||
55 | extern Mesg be_msg; | |
56 | ||
57 | #define NO_OF_ENTRIES_UPDATED 8 | |
58 | #define CR_WRITE_THRESHOLD 8 | |
59 | #define MAX_CR_CACHE_SIZE 32 | |
60 | ||
61 | extern CHostRdCbMgr hostRdCbMgr; | |
62 | ||
63 | class CCompletionRing { | |
64 | ||
65 | VeraList_Ccr_entry completion_ring; | |
66 | VeraList_Ccr_entry local_cr_cache; | |
67 | integer no_of_entries; | |
68 | bit [63:0] ring_start_address; | |
69 | bit[63:0] last_read_address; | |
70 | integer last_ring_index; | |
71 | bit [18:0] ring_length; // check exact bits needed | |
72 | integer ring_index; | |
73 | integer rewind_last_ring_index; | |
74 | integer page_id; | |
75 | integer dma_num; | |
76 | integer set_cr_cb; | |
77 | integer cr_ack_pending; | |
78 | integer startSemId; | |
79 | // Added head/tail pointers . start address etc etc | |
80 | ||
81 | task new () { | |
82 | completion_ring = new(); | |
83 | local_cr_cache = new(); | |
84 | no_of_entries = 0; | |
85 | cr_ack_pending = 0; | |
86 | set_cr_cb = 0; | |
87 | startSemId = alloc(SEMAPHORE,0,1,0); | |
88 | fork { | |
89 | spCacheWriteAckCb(); | |
90 | } join none | |
91 | } | |
92 | ||
93 | task UpdateCompletionRing(CRxToken RxToken); | |
94 | task UpdateCRLastAddress(integer n) ; | |
95 | local task UpdateAddress() ; | |
96 | local function Ccr_entry format_entry(CRxToken RxToken, integer chain, integer index); | |
97 | local task add_entry(Ccr_entry entry); | |
98 | ||
99 | task config_ring( bit[63:0] start_address, bit [15:0] length, (integer ring_page_id = 0) ) { | |
100 | // ring_start_address = start_address; | |
101 | page_id = ring_page_id; | |
102 | printf("config_ring page_id - %d dma_no - %d \n",page_id,dma_num); | |
103 | ring_start_address = SparseMem.xlate_addr( start_address[39:0], ring_page_id ); | |
104 | ring_length = length <<3; | |
105 | ring_index = 0; | |
106 | last_read_address = ring_start_address; | |
107 | last_ring_index = ring_index; | |
108 | rewind_last_ring_index = ring_index; | |
109 | } | |
110 | local function bit[1:0] cr_encode_pkttype(integer pkt_class) ; | |
111 | local task SetCRhostCb(Ccr_entry entry); | |
112 | local task spCacheWriteAckCb(); | |
113 | local task setHostCb(bit[63:0] address); | |
114 | local function integer free_local_cache(integer no_of_entries); | |
115 | ||
116 | function integer ReadCrEntry( integer no_of_entries, var Ccr_entry cr[*]) ; | |
117 | ||
118 | task CheckSysMem(integer no_of_entries); | |
119 | function integer CheckPendingAckStatus(); | |
120 | } | |
121 | ||
122 | function bit[1:0] CCompletionRing::cr_encode_pkttype(integer pkt_class){ | |
123 | ||
124 | printf(" DEBUG- pktclass - %d \n",pkt_class); | |
125 | if((pkt_class== CL_TCP) | ( pkt_class== CL_TCP_OPT) | ( pkt_class== CL_TCP_IP_V6)) { | |
126 | cr_encode_pkttype = 2'b01; | |
127 | } else if( (pkt_class== CL_UDP) | ( pkt_class== CL_UDP_OPT) | (pkt_class== CL_UDP_IP_V6) ) { | |
128 | cr_encode_pkttype = 2'b10; | |
129 | } else if( (pkt_class== CL_SCTP) | ( pkt_class== CL_SCTP_OPT) | (pkt_class== CL_SCTP_IP_V6) ) { | |
130 | cr_encode_pkttype = 2'b11; | |
131 | } else { | |
132 | cr_encode_pkttype = 2'b00; | |
133 | } | |
134 | } | |
135 | ||
136 | function Ccr_entry CCompletionRing::format_entry(CRxToken RxToken, integer chain, integer index) { | |
137 | // various fields in the entry | |
138 | bit multi; | |
139 | bit [1:0] pkt_type; | |
140 | bit zcp; | |
141 | bit frag; | |
142 | bit promis; | |
143 | bit dcf_error; | |
144 | bit [2:0] errors; | |
145 | bit[13:0] length; | |
146 | bit [1:0] pktbufsz; | |
147 | bit[63:0] address; | |
148 | Ccr_entry cr; | |
149 | ||
150 | cr = new(); | |
151 | ||
152 | multi = chain; | |
153 | //pkt_type= (index==0) ? cr_encode_pkttype(RxToken.getPktClass()):0 ; | |
154 | pkt_type= cr_encode_pkttype(RxToken.getPktClass()); // this field will be the same for all block buffers of this jumbo | |
155 | zcp = 0;// review; | |
156 | frag = (RxToken.pgToken.pack_db.flow.frame.frame_class == CL_TCP_FRAG) | | |
157 | (RxToken.pgToken.pack_db.flow.frame.frame_class == CL_UDP_FRAG) | | |
158 | (RxToken.pgToken.pack_db.flow.frame.frame_class == CL_SCTP_FRAG) ; | |
159 | errors = cr.setCRErrorCode(RxToken.getErrorCode()); | |
160 | length = RxToken.pkt_length ; | |
161 | address = RxToken.packet_virtaddress[index]; | |
162 | pktbufsz = RxToken.bufsz; | |
163 | dcf_error = 0; | |
164 | ||
165 | promis = 1'b0; // REMOVE THIS AND UNCOMMENT THE NEXT LINE | |
166 | // promis = mac_pio_class.isMACPromisBitSet(RxToken.port_num); | |
167 | ||
168 | cr.entry = {multi,pkt_type,zcp,frag,promis,errors,dcf_error,length,pktbufsz,address[43:6]}; | |
169 | printf(" Ccr_entry CCompletionRing::format_entry index - %d multi - %d entry - %x\n",index,multi,cr.entry); | |
170 | format_entry = new cr; | |
171 | ||
172 | } | |
173 | ||
174 | task CCompletionRing::UpdateAddress() { | |
175 | printf("CCompletionRing::UpdateAddress Before Update ast_ring_index - %d ring_length - %d \n",last_ring_index,ring_length); | |
176 | last_ring_index++; | |
177 | if( (8*last_ring_index) >= ring_length) { | |
178 | last_ring_index = 0; // wrap around case | |
179 | } | |
180 | last_read_address = ring_start_address + 8*last_ring_index; | |
181 | printf("CCompletionRing::UpdateAddress After Update ast_ring_index - %d Address - %x \n",last_ring_index,last_read_address); | |
182 | } | |
183 | ||
184 | task CCompletionRing::UpdateCRLastAddress(integer n) { | |
185 | ||
186 | if( (8*rewind_last_ring_index) > ring_length) | |
187 | rewind_last_ring_index = 0; // wrap around case | |
188 | else { | |
189 | rewind_last_ring_index = (rewind_last_ring_index + n )% (ring_length/8); | |
190 | } | |
191 | printf("CCompletionRing::UpdateCRLastAddress n - %d, rewind_last_index - %d ring_length - %d \n",n,rewind_last_ring_index,ring_length); | |
192 | last_read_address = ring_start_address + 8*rewind_last_ring_index; | |
193 | last_ring_index = rewind_last_ring_index; | |
194 | printf("CCompletionRing::UpdateCRLastAddress n - %d, last_index - %d ring_length - %d \n",n,last_ring_index,ring_length); | |
195 | } | |
196 | ||
197 | task CCompletionRing::add_entry(Ccr_entry entry) { | |
198 | ||
199 | bit [63:0] address; | |
200 | address = ring_start_address + 8*ring_index; | |
201 | // pointer manipulations ignored for now | |
202 | entry.address = address; | |
203 | entry.print(); | |
204 | completion_ring.push_back(entry); | |
205 | if(set_cr_cb) { | |
206 | SetCRhostCb(entry); | |
207 | } | |
208 | if( (8*ring_index) > ring_length) | |
209 | ring_index = 0; // wrap around case | |
210 | else ring_index++; | |
211 | } | |
212 | ||
213 | task CCompletionRing::SetCRhostCb(Ccr_entry entry) { | |
214 | if(local_cr_cache.size() <= MAX_CR_CACHE_SIZE) { | |
215 | local_cr_cache.push_back(entry); | |
216 | } else { | |
217 | printf(" ERROR local_cr_cache is FULL - Size - %d\n",local_cr_cache.size()); | |
218 | } | |
219 | } | |
220 | ||
221 | function integer CCompletionRing::CheckPendingAckStatus() { | |
222 | integer size; | |
223 | size = local_cr_cache.size(); | |
224 | if(size==MAX_CR_CACHE_SIZE) { | |
225 | CheckPendingAckStatus = 0; | |
226 | } else { | |
227 | CheckPendingAckStatus = 1; | |
228 | } | |
229 | // Disable this for now | |
230 | CheckPendingAckStatus = 1; | |
231 | printf("CCompletionRing::CheckPendingAckStatus Status - %d Size = %d \n",CheckPendingAckStatus,size); | |
232 | } | |
233 | ||
234 | task CCompletionRing::spCacheWriteAckCb() { | |
235 | ||
236 | bit [63:0] address; | |
237 | Ccr_entry cr; | |
238 | while(1) { | |
239 | while(local_cr_cache.size() < CR_WRITE_THRESHOLD) { | |
240 | // just wait for cache to be filled up | |
241 | repeat(10) @(posedge CLOCK); | |
242 | } | |
243 | // if there is a pending callback wait for that to be done before setting the next one | |
244 | while(cr_ack_pending) { | |
245 | repeat(10) @(posedge CLOCK); | |
246 | } | |
247 | // else - not set the call back on the address | |
248 | cr = local_cr_cache.front(); | |
249 | address = cr.address; | |
250 | setHostCb(address); | |
251 | } | |
252 | } | |
253 | ||
254 | task CCompletionRing::setHostCb( bit[63:0] address) { | |
255 | ||
256 | CcbMem cb; | |
257 | shadow bit[63:0] cr_address; | |
258 | integer status; | |
259 | integer semId; | |
260 | ||
261 | cr_ack_pending = 1; | |
262 | ||
263 | semId = startSemId; | |
264 | cr_address = address; | |
265 | cb = new(semId); | |
266 | cb.set(address,CR_WAIT_FOR_ACK); | |
267 | hostRdCbMgr.setCallBack(cb); | |
268 | ||
269 | fork { | |
270 | while(semaphore_get(WAIT,semId,1) == 0 ) { | |
271 | repeat(10) @(posedge CLOCK); | |
272 | } | |
273 | printf(" CCompletionRing::setHostCb:: ACK RECEIVED FOR ADDRESS - %x \n",cr_address); | |
274 | status = free_local_cache(NO_OF_ENTRIES_UPDATED); | |
275 | cr_ack_pending = 0; | |
276 | } join none | |
277 | printf(" Done with CCompletionRing::setHostCb!! \n"); | |
278 | } | |
279 | ||
280 | function integer CCompletionRing::free_local_cache(integer no_of_entries) { | |
281 | integer i; | |
282 | Ccr_entry cr; | |
283 | if(no_of_entries > local_cr_cache.size()) { | |
284 | printf(" TESTBENCH ERROR CCompletionRing::free_local_cache:: \n"); | |
285 | free_local_cache = -1; | |
286 | } else { | |
287 | for( i=0;i< no_of_entries; i++) { | |
288 | cr = local_cr_cache.front(); | |
289 | printf(" FREEING UP Entry at address - %x \n",cr.address); | |
290 | local_cr_cache.pop_front(); | |
291 | } | |
292 | free_local_cache = 1; | |
293 | } | |
294 | } | |
295 | ||
296 | task CCompletionRing::UpdateCompletionRing(CRxToken RxToken) { | |
297 | ||
298 | // Format the content of the entry | |
299 | Ccr_entry entry; | |
300 | integer chain, index; | |
301 | ||
302 | printf(" CCompletionRing::UpdateCompletionRing :: %d \n",RxToken.NoOfScatter); | |
303 | for(index = 0 ; index < RxToken.NoOfScatter; index++ ) { | |
304 | ||
305 | if( index == (RxToken.NoOfScatter -1) ) { | |
306 | chain = 0; | |
307 | } else chain =1; | |
308 | printf(" CCompletionRing::UpdateCompletionRing ::index - %d chain - %d \n",index,chain); | |
309 | entry = format_entry(RxToken, chain, index); | |
310 | // if the ring is full.. do appropriate things here | |
311 | // else add it -- for now | |
312 | add_entry(entry); | |
313 | if(index == (RxToken.NoOfScatter -1)) { | |
314 | RxToken.cr_address = SparseMem.xlate_addr( entry.address[39:0], page_id ); | |
315 | } | |
316 | } | |
317 | ||
318 | } | |
319 | ||
320 | function integer CCompletionRing::ReadCrEntry( integer no_of_entries, var Ccr_entry cr[*]) { | |
321 | ||
322 | integer size; | |
323 | integer i; | |
324 | bit [63:0] rd_data; | |
325 | bit [63:0] address; | |
326 | Ccr_entry cr_mem; | |
327 | ||
328 | cr = new[no_of_entries]; | |
329 | ||
330 | for(i=0;i< (no_of_entries) ;i ++ ) { | |
331 | printf("CCompletionRing::ReadCrEntry DEBUG last_Address - %x last index - %d page_id - %d \n",last_read_address,last_ring_index,page_id); | |
332 | address = SparseMem.xlate_addr( last_read_address[39:0], page_id ); | |
333 | SparseMem.ReadMem(address,rd_data,8'hff); | |
334 | printf("CCompletionRing::ReadCrEntry Address - %x data - %x \n",last_read_address,rd_data); | |
335 | cr[i] = new(); | |
336 | cr[i].set_fields(rd_data); | |
337 | cr[i].address = address; | |
338 | UpdateAddress(); | |
339 | } | |
340 | ReadCrEntry = 1; | |
341 | } | |
342 | ||
343 | task CCompletionRing::CheckSysMem(integer no_of_entries) { | |
344 | ||
345 | integer size; | |
346 | integer i; | |
347 | bit [63:0] rd_data; | |
348 | bit [63:0] address; | |
349 | Ccr_entry cr; | |
350 | integer jumbo_pkt_num=0; | |
351 | ||
352 | // get the current size of the ring and make sure the no_of_entries | |
353 | // to check is not more than the size | |
354 | if(completion_ring.size() < (no_of_entries) ) { | |
355 | printf(" ERROR -- USER ERROR, Current ring shadow size - %d , check requested for size - %d \n",completion_ring.size(), no_of_entries); | |
356 | } else { | |
357 | ||
358 | for(i=0;i< (no_of_entries) ;i ++ ) { | |
359 | cr = completion_ring.front(); | |
360 | completion_ring.pop_front(); | |
361 | ||
362 | address = cr.address; | |
363 | SparseMem.ReadMem(address,rd_data,8'hff); | |
364 | // TMP DISABLE CHECK OF PROMS BIT | |
365 | rd_data[58] = 1'b0; // REMOVE THIS | |
366 | if(rd_data!=cr.entry) { | |
367 | be_msg.print(e_mesg_error,"CCompletionRing::CheckSysMem","", "CR: Mismatch. Model %x RTL %x @ Addr %x dma_num %0d, pkt_id %0d\n",cr.entry,rd_data,address,dma_num,jumbo_pkt_num); | |
368 | printf(" EXPECTED DATA - multi - %b, pkt_type = %b error - %b length - %d pktbufsz - %b address - %x \n",cr.entry[63],cr.entry[62:61], cr.entry[57:55], cr.entry[53:40], cr.entry[39:38], cr.entry[37:0]); | |
369 | printf(" DATA IN MEMORY - multi - %b, pkt_type = %b error - %b length - %d pktbufsz - %b address - %x \n",rd_data[63],rd_data[62:61], rd_data[57:55], rd_data[53:40], rd_data[39:38], rd_data[37:0]); | |
370 | } | |
371 | else { | |
372 | be_msg.print(e_mesg_info,"CCompletionRing::CheckSysMem","", "CR: Data Matched! Model %x RTL %x @ Addr %x dma_num %0d, pkt_id %0d\n",cr.entry,rd_data,address,dma_num,jumbo_pkt_num); | |
373 | } | |
374 | if (!cr.entry[63]) jumbo_pkt_num++; | |
375 | } | |
376 | } | |
377 | ||
378 | } | |
379 | ||
380 | ||
381 |