1 | /* -*- c++ -*- |
---|
2 | * File : vci_io_bridge.cpp |
---|
3 | * Copyright (c) UPMC, Lip6, SoC |
---|
4 | * Authors: Cassio Fraga, Alain Greiner |
---|
5 | * |
---|
6 | * SOCLIB_LGPL_HEADER_BEGIN |
---|
7 | * |
---|
8 | * This file is part of SoCLib, GNU LGPLv2.1. |
---|
9 | * |
---|
10 | * SoCLib is free software; you can redistribute it and/or modify it |
---|
11 | * under the terms of the GNU Lesser General Public License as published |
---|
12 | * by the Free Software Foundation; version 2.1 of the License. |
---|
13 | * |
---|
14 | * SoCLib is distributed in the hope that it will be useful, but |
---|
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
---|
17 | * Lesser General Public License for more details. |
---|
18 | * |
---|
19 | * You should have received a copy of the GNU Lesser General Public |
---|
20 | * License along with SoCLib; if not, write to the Free Software |
---|
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
---|
22 | * 02110-1301 USA |
---|
23 | * |
---|
24 | * SOCLIB_LGPL_HEADER_END |
---|
25 | */ |
---|
26 | |
---|
27 | #include <cassert> |
---|
28 | #include "arithmetics.h" |
---|
29 | #include "alloc_elems.h" |
---|
30 | #include "../include/vci_io_bridge.h" |
---|
31 | |
---|
32 | |
---|
33 | ////// debug services /////////////////////////////////////////////////////// |
---|
34 | // All debug messages are conditionned by two variables: |
---|
35 | // - compile time : DEBUG_*** : defined below |
---|
36 | // - execution time : m_debug_*** : defined by constructor arguments |
---|
37 | // m_debug_activated = (m_debug_ok) and (m_cpt_cycle > m_debug_start_cycle) |
---|
38 | ///////////////////////////////////////////////////////////////////////////////// |
---|
39 | |
---|
40 | #define DEBUG_DMA_CMD 1 |
---|
41 | #define DEBUG_DMA_RSP 1 |
---|
42 | #define DEBUG_TLB_MISS 1 |
---|
43 | #define DEBUG_CONFIG_CMD 1 |
---|
44 | #define DEBUG_CONFIG_RSP 1 |
---|
45 | #define DEBUG_MISS_WTI 1 |
---|
46 | |
---|
47 | namespace soclib { |
---|
48 | namespace caba { |
---|
49 | |
---|
50 | namespace { |
---|
51 | |
---|
52 | const char *dma_cmd_fsm_state_str[] = |
---|
53 | { |
---|
54 | "DMA_CMD_IDLE", |
---|
55 | "DMA_CMD_FIFO_PUT_CMD", |
---|
56 | "DMA_CMD_FIFO_PUT_RSP", |
---|
57 | "DMA_CMD_MISS_WAIT", |
---|
58 | "DMA_CMD_WAIT_EOP", |
---|
59 | }; |
---|
60 | |
---|
61 | const char *dma_rsp_fsm_state_str[] = |
---|
62 | { |
---|
63 | "DMA_RSP_IDLE", |
---|
64 | "DMA_RSP_FIFO_PUT", |
---|
65 | }; |
---|
66 | |
---|
67 | const char *tlb_fsm_state_str[] = |
---|
68 | { |
---|
69 | "TLB_IDLE", |
---|
70 | "TLB_MISS", |
---|
71 | "TLB_PTE1_GET", |
---|
72 | "TLB_PTE1_SELECT", |
---|
73 | "TLB_PTE1_UPDT", |
---|
74 | "TLB_PTE2_GET", |
---|
75 | "TLB_PTE2_SELECT", |
---|
76 | "TLB_PTE2_UPDT", |
---|
77 | "TLB_WAIT", |
---|
78 | "TLB_RETURN", |
---|
79 | "TLB_INVAL_CHECK", |
---|
80 | }; |
---|
81 | |
---|
82 | const char *config_cmd_fsm_state_str[] = |
---|
83 | { |
---|
84 | "CONFIG_CMD_IDLE", |
---|
85 | "CONFIG_CMD_FIFO_PUT_CMD", |
---|
86 | "CONFIG_CMD_FIFO_PUT_RSP", |
---|
87 | }; |
---|
88 | |
---|
89 | const char *config_rsp_fsm_state_str[] = |
---|
90 | { |
---|
91 | "CONFIG_RSP_IDLE", |
---|
92 | "CONFIG_RSP_FIFO_PUT", |
---|
93 | }; |
---|
94 | |
---|
95 | const char *miss_wti_cmd_state_str[] = |
---|
96 | { |
---|
97 | "MISS_WTI_CMD_IDLE", |
---|
98 | "MISS_WTI_CMD_WTI", |
---|
99 | "MISS_WTI_CMD_MISS", |
---|
100 | }; |
---|
101 | const char *miss_wti_rsp_state_str[] = |
---|
102 | { |
---|
103 | "MISS_WTI_RSP_IDLE", |
---|
104 | "MISS_WTI_RSP_WTI", |
---|
105 | "MISS_WTI_RSP_MISS", |
---|
106 | }; |
---|
107 | } |
---|
108 | |
---|
109 | #define tmpl(...) template<typename vci_param_int,typename vci_param_ext> __VA_ARGS__ VciIoBridge<vci_param_int,vci_param_ext> |
---|
110 | |
---|
111 | //////////////////////// |
---|
112 | tmpl(/**/)::VciIoBridge( |
---|
113 | sc_module_name name, |
---|
114 | const soclib::common::MappingTable &mt_ext, |
---|
115 | const soclib::common::MappingTable &mt_int, |
---|
116 | const soclib::common::MappingTable &mt_iox, |
---|
117 | const soclib::common::IntTab &int_tgtid, // INT network TGTID |
---|
118 | const soclib::common::IntTab &int_srcid, // INT network SRCID |
---|
119 | const soclib::common::IntTab &iox_tgtid, // IOX network TGTID |
---|
120 | const bool has_irqs, |
---|
121 | const size_t dcache_words, |
---|
122 | const size_t iotlb_ways, |
---|
123 | const size_t iotlb_sets, |
---|
124 | const uint32_t debug_start_cycle, |
---|
125 | const bool debug_ok) |
---|
126 | : soclib::caba::BaseModule(name), |
---|
127 | |
---|
128 | p_clk("p_clk"), |
---|
129 | p_resetn("p_resetn"), |
---|
130 | p_vci_ini_ram("p_vci_ini_ram"), |
---|
131 | p_vci_tgt_iox("p_vci_tgt_iox"), |
---|
132 | p_vci_ini_iox("p_vci_ini_iox"), |
---|
133 | p_vci_tgt_int("p_vci_tgt_int"), |
---|
134 | p_vci_ini_int("p_vci_ini_int"), |
---|
135 | |
---|
136 | m_words( dcache_words ), |
---|
137 | m_has_irqs( has_irqs ), |
---|
138 | |
---|
139 | // INT & IOX Network |
---|
140 | m_int_seglist( mt_int.getSegmentList( int_tgtid )), |
---|
141 | m_int_srcid( mt_int.indexForId( int_srcid )), |
---|
142 | m_iox_seglist( mt_iox.getSegmentList( iox_tgtid )), |
---|
143 | |
---|
144 | m_iotlb_ways(iotlb_ways), |
---|
145 | m_iotlb_sets(iotlb_sets), |
---|
146 | |
---|
147 | m_debug_start_cycle(debug_start_cycle), |
---|
148 | m_debug_ok(debug_ok), |
---|
149 | |
---|
150 | // addressable registers |
---|
151 | r_iommu_ptpr("r_iommu_ptpr"), |
---|
152 | r_iommu_active("r_iommu_active"), |
---|
153 | r_iommu_bvar("r_iommu_bvar"), |
---|
154 | r_iommu_etr("r_iommu_etr"), |
---|
155 | r_iommu_bad_id("r_iommu_bad_id"), |
---|
156 | r_iommu_wti_paddr("r_iommu_wti_paddr"), |
---|
157 | r_iommu_peri_wti(alloc_elems<sc_signal<vci_addr_t> >("r_peri_wti_paddr", 32)), |
---|
158 | |
---|
159 | // DMA_CMD FSM registers |
---|
160 | r_dma_cmd_fsm("r_dma_cmd_fsm"), |
---|
161 | r_dma_cmd_vaddr("r_dma_cmd_vaddr"), |
---|
162 | r_dma_cmd_paddr("r_dma_cmd_paddr"), |
---|
163 | |
---|
164 | //DMA_RSP FSM registers |
---|
165 | r_dma_rsp_fsm("r_dma_rsp_fsm"), |
---|
166 | |
---|
167 | // CONFIG_CMD FSM registers |
---|
168 | r_config_cmd_fsm("r_config_cmd_fsm"), |
---|
169 | r_config_cmd_rdata("r_config_cmd_rdata"), |
---|
170 | r_config_cmd_error("r_config_cmd_error"), |
---|
171 | r_config_cmd_inval_vaddr("r_config_cmd_inval_vaddr"), |
---|
172 | |
---|
173 | // CONFIG_RSP FSM registers |
---|
174 | r_config_rsp_fsm("r_config_rsp_fsm"), |
---|
175 | |
---|
176 | // TLB FSM registers |
---|
177 | r_tlb_fsm("r_tlb_fsm"), |
---|
178 | r_waiting_transaction("r_waiting_transaction"), |
---|
179 | r_tlb_miss_type("r_tlb_miss_type"), |
---|
180 | r_tlb_miss_error("r_tlb_miss_error"), |
---|
181 | r_tlb_paddr("r_tlb_paddr"), |
---|
182 | r_tlb_pte_flags("r_tlb_pte_flags"), |
---|
183 | r_tlb_pte_ppn("r_tlb_pte_ppn"), |
---|
184 | r_tlb_way("r_tlb_way"), |
---|
185 | r_tlb_set("r_tlb_set"), |
---|
186 | r_tlb_buf_valid("r_tlb_buf_valid"), |
---|
187 | r_tlb_buf_tag("r_tlb_buf_tag"), |
---|
188 | r_tlb_buf_vaddr("r_tlb_buf_vaddr"), |
---|
189 | r_tlb_buf_big_page("r_tlb_buf_big_page"), |
---|
190 | |
---|
191 | // MISS_WTI_CMD FSM registers |
---|
192 | r_miss_wti_cmd_fsm("r_miss_wti_cmd_fsm"), |
---|
193 | r_miss_wti_cmd_index("r_miss_wti_cmd_index"), |
---|
194 | |
---|
195 | // MISS_WTI_CMD FSM registers |
---|
196 | r_miss_wti_rsp_fsm("r_miss_wti_rsp_fsm"), |
---|
197 | r_miss_wti_rsp_error("r_miss_wti_rsp_error"), |
---|
198 | |
---|
199 | // allocator for CONFIG_RSP & DMA_RSP fifos |
---|
200 | r_alloc_fifo_config_rsp_local("r_alloc_fifo_config_rsp_local"), |
---|
201 | r_alloc_fifo_dma_rsp_local("r_alloc_fifo_dma_rsp_local"), |
---|
202 | |
---|
203 | // IRQs registers |
---|
204 | r_irq_pending(alloc_elems<sc_signal<bool> >("r_irq_pending", 32)), |
---|
205 | r_irq_request(alloc_elems<sc_signal<bool> >("r_irq_request", 32)), |
---|
206 | |
---|
207 | // TLB for IOMMU |
---|
208 | r_iotlb("iotlb", 0, iotlb_ways, iotlb_sets, vci_param_int::N), |
---|
209 | |
---|
210 | // Inter-FSM communications |
---|
211 | r_dma_tlb_req("r_dma_tlb_req"), |
---|
212 | r_config_tlb_req("r_config_tlb_req"), |
---|
213 | r_tlb_miss_req("r_tlb_miss_req"), |
---|
214 | |
---|
215 | // DMA_CMD FIFOs |
---|
216 | m_dma_cmd_addr_fifo("m_dma_cmd_addr_fifo",2), |
---|
217 | m_dma_cmd_srcid_fifo("m_dma_cmd_srcid_fifo",2), |
---|
218 | m_dma_cmd_trdid_fifo("m_dma_cmd_trdid_fifo",2), |
---|
219 | m_dma_cmd_pktid_fifo("m_dma_cmd_pktid_fifo",2), |
---|
220 | m_dma_cmd_be_fifo("m_dma_cmd_be_fifo",2), |
---|
221 | m_dma_cmd_cmd_fifo("m_dma_cmd_cmd_fifo",2), |
---|
222 | m_dma_cmd_contig_fifo("m_dma_cmd_contig_fifo",2), |
---|
223 | m_dma_cmd_data_fifo("m_dma_cmd_data_fifo",2), |
---|
224 | m_dma_cmd_eop_fifo("m_dma_cmd_eop_fifo",2), |
---|
225 | m_dma_cmd_cons_fifo("m_dma_cmd_cons_fifo",2), |
---|
226 | m_dma_cmd_plen_fifo("m_dma_cmd_plen_fifo",2), |
---|
227 | m_dma_cmd_wrap_fifo("m_dma_cmd_wrap_fifo",2), |
---|
228 | m_dma_cmd_cfixed_fifo("m_dma_cmd_cfixed_fifo",2), |
---|
229 | m_dma_cmd_clen_fifo("m_dma_cmd_clen_fifo",2), |
---|
230 | |
---|
231 | // DMA_RSP FIFOs |
---|
232 | m_dma_rsp_data_fifo("m_dma_rsp_data_fifo",2), |
---|
233 | m_dma_rsp_rsrcid_fifo("m_dma_rsp_rsrcid_fifo",2), |
---|
234 | m_dma_rsp_rtrdid_fifo("m_dma_rsp_rtrdid_fifo",2), |
---|
235 | m_dma_rsp_rpktid_fifo("m_dma_rsp_rpktid_fifo",2), |
---|
236 | m_dma_rsp_reop_fifo("m_dma_rsp_reop_fifo",2), |
---|
237 | m_dma_rsp_rerror_fifo("m_dma_rsp_rerror_fifo",2), |
---|
238 | |
---|
239 | // CONFIG_CMD FIFOs |
---|
240 | m_config_cmd_addr_fifo("m_config_cmd_addr_fifo",2), |
---|
241 | m_config_cmd_srcid_fifo("m_config_cmd_srcid_fifo",2), |
---|
242 | m_config_cmd_trdid_fifo("m_config_cmd_trdid_fifo",2), |
---|
243 | m_config_cmd_pktid_fifo("m_config_cmd_pktid_fifo",2), |
---|
244 | m_config_cmd_be_fifo("m_config_cmd_be_fifo",2), |
---|
245 | m_config_cmd_cmd_fifo("m_config_cmd_cmd_fifo",2), |
---|
246 | m_config_cmd_contig_fifo("m_config_cmd_contig_fifo",2), |
---|
247 | m_config_cmd_data_fifo("m_config_cmd_data_fifo",2), |
---|
248 | m_config_cmd_eop_fifo("m_config_cmd_eop_fifo",2), |
---|
249 | m_config_cmd_cons_fifo("m_config_cmd_cons_fifo",2), |
---|
250 | m_config_cmd_plen_fifo("m_config_cmd_plen_fifo",2), |
---|
251 | m_config_cmd_wrap_fifo("m_config_cmd_wrap_fifo",2), |
---|
252 | m_config_cmd_cfixed_fifo("m_config_cmd_cfixed_fifo",2), |
---|
253 | m_config_cmd_clen_fifo("m_config_cmd_clen_fifo",2), |
---|
254 | |
---|
255 | // CONFIG_RSP FIFOs |
---|
256 | m_config_rsp_data_fifo("m_config_rsp_data_fifo",2), |
---|
257 | m_config_rsp_rsrcid_fifo("m_config_rsp_rsrcid_fifo",2), |
---|
258 | m_config_rsp_rtrdid_fifo("m_config_rsp_rtrdid_fifo",2), |
---|
259 | m_config_rsp_rpktid_fifo("m_config_rsp_rpktid_fifo",2), |
---|
260 | m_config_rsp_reop_fifo("m_config_rsp_reop_fifo",2), |
---|
261 | m_config_rsp_rerror_fifo("m_config_rsp_rerror_fifo",2) |
---|
262 | { |
---|
263 | std::cout << " - Building VciIoBridge : " << name << std::endl; |
---|
264 | |
---|
265 | // checking segments on INT network |
---|
266 | assert ( ( not m_int_seglist.empty() ) and |
---|
267 | "VCI_IO_BRIDGE ERROR : no segment allocated on INT network"); |
---|
268 | |
---|
269 | std::list<soclib::common::Segment>::iterator int_seg; |
---|
270 | for ( int_seg = m_int_seglist.begin() ; int_seg != m_int_seglist.end() ; int_seg++ ) |
---|
271 | { |
---|
272 | std::cout << " => segment " << int_seg->name() |
---|
273 | << " / base = " << std::hex << int_seg->baseAddress() |
---|
274 | << " / size = " << int_seg->size() |
---|
275 | << " / special = " << int_seg->special() << std::endl; |
---|
276 | } |
---|
277 | |
---|
278 | // checking segments on IOX network |
---|
279 | assert ( ( not m_iox_seglist.empty() ) and |
---|
280 | "VCI_IO_BRIDGE ERROR : no segment allocated on IOX network"); |
---|
281 | |
---|
282 | std::list<soclib::common::Segment>::iterator iox_seg; |
---|
283 | for ( iox_seg = m_iox_seglist.begin() ; iox_seg != m_iox_seglist.end() ; iox_seg++ ) |
---|
284 | { |
---|
285 | std::cout << " => segment " << iox_seg->name() |
---|
286 | << " / base = " << std::hex << iox_seg->baseAddress() |
---|
287 | << " / size = " << iox_seg->size() << std::endl; |
---|
288 | } |
---|
289 | |
---|
290 | assert( (vci_param_int::N == vci_param_ext::N) and |
---|
291 | "VCI_IO_BRIDGE ERROR: VCI ADDRESS widths must be equal on the 3 networks"); |
---|
292 | |
---|
293 | assert( (vci_param_int::N <= 64) and |
---|
294 | "VCI_IO_BRIDGE ERROR: VCI ADDRESS width cannot be bigger than 64 bits"); |
---|
295 | |
---|
296 | assert( ((vci_param_int::B == 4) or (vci_param_int::B == 8)) and |
---|
297 | "VCI_IO_BRIDGE ERROR: VCI DATA width must be 32 or 64 bits on internal network"); |
---|
298 | |
---|
299 | assert( ((vci_param_ext::B == 4) or (vci_param_ext::B == 8)) and |
---|
300 | "VCI_IO_BRIDGE ERROR: VCI DATA width must be 32 or 64 bits on external network"); |
---|
301 | |
---|
302 | assert( (vci_param_int::S == vci_param_ext::S) and |
---|
303 | "VCI_IO_BRIDGE ERROR: SRCID widths must be equal on the 3 networks"); |
---|
304 | |
---|
305 | // contruct 32 IRQ ports if required |
---|
306 | if ( has_irqs ) |
---|
307 | { |
---|
308 | for ( size_t n=0 ; n<32 ; n++ ) p_irq[n] = new sc_core::sc_in<bool>; |
---|
309 | } |
---|
310 | |
---|
311 | // Cache line buffer |
---|
312 | r_tlb_buf_data = new uint32_t[dcache_words]; |
---|
313 | |
---|
314 | SC_METHOD(transition); |
---|
315 | dont_initialize(); |
---|
316 | sensitive << p_clk.pos(); |
---|
317 | |
---|
318 | SC_METHOD(genMoore); |
---|
319 | dont_initialize(); |
---|
320 | sensitive << p_clk.neg(); |
---|
321 | |
---|
322 | } |
---|
323 | |
---|
324 | ///////////////////////////////////// |
---|
325 | tmpl(/**/)::~VciIoBridge() |
---|
326 | ///////////////////////////////////// |
---|
327 | { |
---|
328 | delete [] r_iommu_peri_wti; |
---|
329 | delete [] r_tlb_buf_data; |
---|
330 | soclib::common::dealloc_elems(p_irq, 32); |
---|
331 | soclib::common::dealloc_elems(r_irq_request, 32); |
---|
332 | soclib::common::dealloc_elems(r_irq_pending, 32); |
---|
333 | } |
---|
334 | |
---|
335 | //////////////////////////////////// |
---|
336 | tmpl(void)::print_trace(size_t mode) |
---|
337 | //////////////////////////////////// |
---|
338 | { |
---|
339 | // b0 : IOTLB trace |
---|
340 | |
---|
341 | std::cout << std::dec << "IO_BRIDGE " << name() << std::endl; |
---|
342 | |
---|
343 | std::cout << " " << dma_cmd_fsm_state_str[r_dma_cmd_fsm.read()] |
---|
344 | << " | " << dma_rsp_fsm_state_str[r_dma_rsp_fsm.read()] |
---|
345 | << " | " << tlb_fsm_state_str[r_tlb_fsm.read()] |
---|
346 | << " | " << config_cmd_fsm_state_str[r_config_cmd_fsm.read()] |
---|
347 | << " | " << config_rsp_fsm_state_str[r_config_rsp_fsm.read()] |
---|
348 | << " | " << miss_wti_cmd_state_str[r_miss_wti_cmd_fsm.read()] |
---|
349 | << " | " << miss_wti_rsp_state_str[r_miss_wti_rsp_fsm.read()] |
---|
350 | << std::endl; |
---|
351 | |
---|
352 | if(mode & 0x01) |
---|
353 | { |
---|
354 | std::cout << " IOTLB" << std::endl; |
---|
355 | r_iotlb.printTrace(); |
---|
356 | } |
---|
357 | } |
---|
358 | |
---|
359 | //////////////////////// |
---|
360 | tmpl(void)::print_stats() |
---|
361 | //////////////////////// |
---|
362 | { |
---|
363 | std::cout << name() << std::endl |
---|
364 | << "- IOTLB MISS RATE = " << (float)m_cpt_iotlb_miss/m_cpt_iotlb_read << std::endl |
---|
365 | << "- IOTLB MISS COST = " << (float)m_cost_iotlb_miss/m_cpt_iotlb_miss << std::endl |
---|
366 | << "- IOTLB MISS TRANSACTION COST = " << (float)m_cost_iotlbmiss_transaction/m_cpt_iotlbmiss_transaction << std::endl |
---|
367 | << "- IOTLB MISS TRANSACTION RATE (OVER ALL MISSES) = " << (float)m_cpt_iotlbmiss_transaction/m_cpt_iotlb_miss << std::endl; |
---|
368 | } |
---|
369 | |
---|
370 | //////////////////////// |
---|
371 | tmpl(void)::clear_stats() |
---|
372 | //////////////////////// |
---|
373 | { |
---|
374 | m_cpt_iotlb_read = 0; |
---|
375 | m_cpt_iotlb_miss = 0; |
---|
376 | m_cost_iotlb_miss = 0; |
---|
377 | m_cpt_iotlbmiss_transaction = 0; |
---|
378 | m_cost_iotlbmiss_transaction = 0; |
---|
379 | } |
---|
380 | |
---|
381 | ///////////////////////// |
---|
382 | tmpl(void)::transition() |
---|
383 | ///////////////////////// |
---|
384 | { |
---|
385 | if ( not p_resetn.read() ) |
---|
386 | { |
---|
387 | r_dma_cmd_fsm = DMA_CMD_IDLE; |
---|
388 | r_dma_rsp_fsm = DMA_RSP_IDLE; |
---|
389 | r_tlb_fsm = TLB_IDLE; |
---|
390 | r_config_cmd_fsm = CONFIG_CMD_IDLE; |
---|
391 | r_config_rsp_fsm = CONFIG_RSP_IDLE; |
---|
392 | r_miss_wti_cmd_fsm = MISS_WTI_CMD_IDLE; |
---|
393 | r_miss_wti_rsp_fsm = MISS_WTI_RSP_IDLE; |
---|
394 | |
---|
395 | r_alloc_fifo_config_rsp_local = true; |
---|
396 | r_alloc_fifo_dma_rsp_local = true; |
---|
397 | |
---|
398 | r_tlb_buf_valid = false; |
---|
399 | r_iommu_active = false; |
---|
400 | r_iommu_wti_enable = false; |
---|
401 | |
---|
402 | // initializing FIFOs |
---|
403 | m_dma_cmd_addr_fifo.init(); |
---|
404 | m_dma_cmd_srcid_fifo.init(); |
---|
405 | m_dma_cmd_trdid_fifo.init(); |
---|
406 | m_dma_cmd_pktid_fifo.init(); |
---|
407 | m_dma_cmd_be_fifo.init(); |
---|
408 | m_dma_cmd_cmd_fifo.init(); |
---|
409 | m_dma_cmd_contig_fifo.init(); |
---|
410 | m_dma_cmd_data_fifo.init(); |
---|
411 | m_dma_cmd_eop_fifo.init(); |
---|
412 | m_dma_cmd_cons_fifo.init(); |
---|
413 | m_dma_cmd_plen_fifo.init(); |
---|
414 | m_dma_cmd_wrap_fifo.init(); |
---|
415 | m_dma_cmd_cfixed_fifo.init(); |
---|
416 | m_dma_cmd_clen_fifo.init(); |
---|
417 | |
---|
418 | m_dma_rsp_rsrcid_fifo.init(); |
---|
419 | m_dma_rsp_rtrdid_fifo.init(); |
---|
420 | m_dma_rsp_rpktid_fifo.init(); |
---|
421 | m_dma_rsp_data_fifo.init(); |
---|
422 | m_dma_rsp_rerror_fifo.init(); |
---|
423 | m_dma_rsp_reop_fifo.init(); |
---|
424 | |
---|
425 | m_config_cmd_addr_fifo.init(); |
---|
426 | m_config_cmd_srcid_fifo.init(); |
---|
427 | m_config_cmd_trdid_fifo.init(); |
---|
428 | m_config_cmd_pktid_fifo.init(); |
---|
429 | m_config_cmd_be_fifo.init(); |
---|
430 | m_config_cmd_cmd_fifo.init(); |
---|
431 | m_config_cmd_contig_fifo.init(); |
---|
432 | m_config_cmd_data_fifo.init(); |
---|
433 | m_config_cmd_eop_fifo.init(); |
---|
434 | m_config_cmd_cons_fifo.init(); |
---|
435 | m_config_cmd_plen_fifo.init(); |
---|
436 | m_config_cmd_wrap_fifo.init(); |
---|
437 | m_config_cmd_cfixed_fifo.init(); |
---|
438 | m_config_cmd_clen_fifo.init(); |
---|
439 | |
---|
440 | m_config_rsp_rsrcid_fifo.init(); |
---|
441 | m_config_rsp_rtrdid_fifo.init(); |
---|
442 | m_config_rsp_rpktid_fifo.init(); |
---|
443 | m_config_rsp_data_fifo.init(); |
---|
444 | m_config_rsp_rerror_fifo.init(); |
---|
445 | m_config_rsp_reop_fifo.init(); |
---|
446 | |
---|
447 | // SET/RESET Communication flip-flops |
---|
448 | r_dma_tlb_req = false; |
---|
449 | r_config_tlb_req = false; |
---|
450 | r_tlb_miss_req = false; |
---|
451 | |
---|
452 | // Debug variable |
---|
453 | m_debug_activated = false; |
---|
454 | |
---|
455 | for ( size_t n=0 ; n<32 ; n++ ) |
---|
456 | { |
---|
457 | r_irq_pending[n] = false; |
---|
458 | r_irq_request[n] = false; |
---|
459 | } |
---|
460 | |
---|
461 | // activity counters |
---|
462 | m_cpt_total_cycles = 0; |
---|
463 | m_cpt_iotlb_read = 0; |
---|
464 | m_cpt_iotlb_miss = 0; |
---|
465 | m_cpt_iotlbmiss_transaction = 0; |
---|
466 | m_cost_iotlbmiss_transaction = 0; |
---|
467 | |
---|
468 | m_cpt_trt_dma_full = 0; |
---|
469 | m_cpt_trt_dma_full_cost = 0; |
---|
470 | m_cpt_trt_config_full = 0; |
---|
471 | m_cpt_trt_config_full_cost = 0; |
---|
472 | |
---|
473 | for (uint32_t i=0; i<32 ; ++i) m_cpt_fsm_dma_cmd [i] = 0; |
---|
474 | for (uint32_t i=0; i<32 ; ++i) m_cpt_fsm_dma_rsp [i] = 0; |
---|
475 | for (uint32_t i=0; i<32 ; ++i) m_cpt_fsm_tlb [i] = 0; |
---|
476 | for (uint32_t i=0; i<32 ; ++i) m_cpt_fsm_config_cmd [i] = 0; |
---|
477 | for (uint32_t i=0; i<32 ; ++i) m_cpt_fsm_config_rsp [i] = 0; |
---|
478 | for (uint32_t i=0; i<32 ; ++i) m_cpt_fsm_miss_wti_cmd [i] = 0; |
---|
479 | for (uint32_t i=0; i<32 ; ++i) m_cpt_fsm_miss_wti_rsp [i] = 0; |
---|
480 | |
---|
481 | return; |
---|
482 | } |
---|
483 | |
---|
484 | // default values for FIFOs |
---|
485 | bool dma_cmd_fifo_put = false; |
---|
486 | bool dma_cmd_fifo_get = false; |
---|
487 | |
---|
488 | bool dma_rsp_fifo_put = false; |
---|
489 | bool dma_rsp_fifo_get = false; |
---|
490 | |
---|
491 | bool config_cmd_fifo_put = false; |
---|
492 | bool config_cmd_fifo_get = false; |
---|
493 | |
---|
494 | bool config_rsp_fifo_put = false; |
---|
495 | bool config_rsp_fifo_get = false; |
---|
496 | |
---|
497 | #ifdef INSTRUMENTATION |
---|
498 | m_cpt_fsm_dma_cmd [r_dma_cmd_fsm.read()] ++; |
---|
499 | m_cpt_fsm_dma_rsp [r_dma_rsp_fsm.read() ] ++; |
---|
500 | m_cpt_fsm_tlb [r_tlb_fsm.read() ] ++; |
---|
501 | m_cpt_fsm_config_cmd [r_config_cmd_fsm.read() ] ++; |
---|
502 | m_cpt_fsm_config_rsp [r_config_rsp_fsm.read() ] ++; |
---|
503 | m_cpt_fsm_miss_wti_cmd [r_miss_wti_cmd_fsm.read() ] ++; |
---|
504 | m_cpt_fsm_miss_wti_rsp [r_miss_wti_rsp_fsm.read() ] ++; |
---|
505 | #endif |
---|
506 | |
---|
507 | m_cpt_total_cycles++; |
---|
508 | |
---|
509 | m_debug_activated = (m_cpt_total_cycles > m_debug_start_cycle) and m_debug_ok; |
---|
510 | |
---|
511 | ////////////////////////////////////////////////////////////////////////////// |
---|
512 | // The DMA_CMD_FSM handles DMA transactions requested by peripherals |
---|
513 | // It makes the address translation if IOMMU is activated. |
---|
514 | /////////////////////////////////////////////////////////////////////////////// |
---|
515 | |
---|
516 | switch( r_dma_cmd_fsm.read() ) |
---|
517 | { |
---|
518 | ////////////////// |
---|
519 | case DMA_CMD_IDLE: // waiting DMA VCI transaction |
---|
520 | { |
---|
521 | if ( p_vci_tgt_iox.cmdval.read() ) // compute physical address |
---|
522 | { |
---|
523 | if ( not r_iommu_active.read() ) // tlb not activated |
---|
524 | { |
---|
525 | #if DEBUG_DMA_CMD |
---|
526 | if( m_debug_activated ) |
---|
527 | std::cout << " <IOB DMA_CMD_IDLE> IOMMU not activated" << std::endl; |
---|
528 | #endif |
---|
529 | // put DMA transaction into DMA_CMD fifo |
---|
530 | r_dma_cmd_paddr = p_vci_tgt_iox.address.read(); |
---|
531 | r_dma_cmd_fsm = DMA_CMD_FIFO_PUT_CMD; |
---|
532 | } |
---|
533 | else if (r_tlb_fsm.read() == TLB_IDLE || |
---|
534 | r_tlb_fsm.read() == TLB_WAIT ) // tlb access possible |
---|
535 | { |
---|
536 | vci_addr_t iotlb_paddr; |
---|
537 | pte_info_t iotlb_flags; |
---|
538 | size_t iotlb_way; |
---|
539 | size_t iotlb_set; |
---|
540 | vci_addr_t iotlb_nline; |
---|
541 | bool iotlb_hit; |
---|
542 | |
---|
543 | #ifdef INSTRUMENTATION |
---|
544 | m_cpt_iotlb_read++; |
---|
545 | #endif |
---|
546 | iotlb_hit = r_iotlb.translate(p_vci_tgt_iox.address.read(), |
---|
547 | &iotlb_paddr, |
---|
548 | &iotlb_flags, |
---|
549 | &iotlb_nline, // unused |
---|
550 | &iotlb_way, // unused |
---|
551 | &iotlb_set ); // unused |
---|
552 | |
---|
553 | if ( iotlb_hit ) // tlb hit |
---|
554 | { |
---|
555 | if ( not iotlb_flags.w and // access right violation |
---|
556 | (p_vci_tgt_iox.cmd.read() == vci_param_ext::CMD_WRITE) ) |
---|
557 | { |
---|
558 | // put DMA response error into DMA_RSP fifo |
---|
559 | r_iommu_etr = MMU_WRITE_ACCES_VIOLATION; |
---|
560 | r_iommu_bvar = p_vci_tgt_iox.address.read(); |
---|
561 | r_iommu_bad_id = p_vci_tgt_iox.srcid.read(); |
---|
562 | r_dma_cmd_fsm = DMA_CMD_FIFO_PUT_RSP; |
---|
563 | #if DEBUG_DMA_CMD |
---|
564 | if( m_debug_activated ) |
---|
565 | std::cout << " <IOB DMA_CMD_IDLE> TLB HIT but writable violation" << std::endl; |
---|
566 | #endif |
---|
567 | } |
---|
568 | else // no access rights violation |
---|
569 | { |
---|
570 | #if DEBUG_DMA_CMD |
---|
571 | if( m_debug_activated ) |
---|
572 | std::cout << " <IOB DMA_CMD_IDLE> TLB HIT" << std::endl; |
---|
573 | #endif |
---|
574 | // put DMA transaction into DMA_CMD fifo |
---|
575 | r_dma_cmd_paddr = iotlb_paddr; |
---|
576 | r_dma_cmd_fsm = DMA_CMD_FIFO_PUT_CMD; |
---|
577 | } |
---|
578 | } |
---|
579 | else // TLB miss |
---|
580 | { |
---|
581 | |
---|
582 | #ifdef INSTRUMENTATION |
---|
583 | m_cpt_iotlb_miss++; |
---|
584 | #endif |
---|
585 | // register virtual address, and send request to TLB FSM |
---|
586 | r_dma_cmd_vaddr = p_vci_tgt_iox.address.read(); |
---|
587 | r_dma_tlb_req = true; |
---|
588 | r_dma_cmd_fsm = DMA_CMD_MISS_WAIT; |
---|
589 | #if DEBUG_DMA_CMD |
---|
590 | if( m_debug_activated ) |
---|
591 | std::cout << " <IOB DMA_CMD_IDLE> TLB MISS" << std::endl; |
---|
592 | #endif |
---|
593 | } // end !hit |
---|
594 | } // end if tlb_activated |
---|
595 | } // end if cmdval |
---|
596 | break; |
---|
597 | } |
---|
598 | ////////////////////////// |
---|
599 | case DMA_CMD_FIFO_PUT_CMD: // put a DMA transaction in DMA_CMD fifo |
---|
600 | // if contig, VCI address must be incremented |
---|
601 | { |
---|
602 | if ( p_vci_tgt_iox.cmdval && m_dma_cmd_addr_fifo.wok() ) |
---|
603 | { |
---|
604 | dma_cmd_fifo_put = true; |
---|
605 | |
---|
606 | if ( p_vci_tgt_iox.contig.read() ) r_dma_cmd_paddr = r_dma_cmd_paddr.read() + |
---|
607 | vci_param_ext::B; |
---|
608 | |
---|
609 | if ( p_vci_tgt_iox.eop.read() ) r_dma_cmd_fsm = DMA_CMD_IDLE; |
---|
610 | |
---|
611 | #if DEBUG_DMA_CMD |
---|
612 | if( m_debug_activated ) |
---|
613 | std::cout << " <IOB DMA_CMD_FIFO_PUT_CMD> Push into DMA_CMD fifo:" |
---|
614 | << " address = " << std::hex << r_dma_cmd_paddr.read() |
---|
615 | << " srcid = " << p_vci_tgt_iox.srcid.read() |
---|
616 | << " trdid = " << p_vci_tgt_iox.trdid.read() |
---|
617 | << " wdata = " << p_vci_tgt_iox.wdata.read() |
---|
618 | << " be = " << p_vci_tgt_iox.be.read() |
---|
619 | << " contig = " << p_vci_tgt_iox.contig.read() |
---|
620 | << " eop = " << std::dec << p_vci_tgt_iox.eop.read() |
---|
621 | << " plen = " << std::dec << p_vci_tgt_iox.plen.read() << std::endl; |
---|
622 | #endif |
---|
623 | } |
---|
624 | break; |
---|
625 | } |
---|
626 | ////////////////////// |
---|
627 | case DMA_CMD_WAIT_EOP: // An error has been detected on the VCI DMA command |
---|
628 | // consume the VCI packet before sending the error response |
---|
629 | { |
---|
630 | if ( p_vci_tgt_iox.eop.read() ) r_dma_cmd_fsm = DMA_CMD_FIFO_PUT_RSP; |
---|
631 | break; |
---|
632 | } |
---|
633 | ////////////////////////// |
---|
634 | case DMA_CMD_FIFO_PUT_RSP: // try to put a response error in DMA_RSP fifo |
---|
635 | // The FIFO is shared with DMA_RSP FSM |
---|
636 | // and we must we wait for allocation... |
---|
637 | { |
---|
638 | if ( r_alloc_fifo_dma_rsp_local.read() ) |
---|
639 | { |
---|
640 | dma_rsp_fifo_put = true; |
---|
641 | |
---|
642 | if( m_dma_rsp_data_fifo.wok() ) |
---|
643 | { |
---|
644 | |
---|
645 | #if DEBUG_DMA_CMD |
---|
646 | if( m_debug_activated ) |
---|
647 | std::cout << " <IOB DMA_CMD_FIFO_PUT_RSP> Put a response error to a DMA transaction." |
---|
648 | << std::endl; |
---|
649 | #endif |
---|
650 | r_dma_cmd_fsm = DMA_CMD_IDLE; |
---|
651 | } |
---|
652 | } |
---|
653 | break; |
---|
654 | } |
---|
655 | /////////////////////// |
---|
656 | case DMA_CMD_MISS_WAIT: // waiting completion of a TLB miss |
---|
657 | // we must test a possible page fault error... |
---|
658 | { |
---|
659 | if ( not r_dma_tlb_req.read() ) // TLB miss completed |
---|
660 | { |
---|
661 | if ( r_tlb_miss_error.read() ) // Error reported by TLB FSM |
---|
662 | { |
---|
663 | r_iommu_etr = MMU_READ_PT2_UNMAPPED; |
---|
664 | r_iommu_bvar = r_dma_cmd_vaddr.read(); |
---|
665 | r_iommu_bad_id = p_vci_tgt_iox.srcid.read(); |
---|
666 | r_dma_cmd_fsm = DMA_CMD_FIFO_PUT_RSP; |
---|
667 | } |
---|
668 | else // No error |
---|
669 | { |
---|
670 | r_dma_cmd_fsm = DMA_CMD_IDLE; |
---|
671 | } |
---|
672 | } |
---|
673 | break; |
---|
674 | } |
---|
675 | } // end switch DMA_CMD FSM |
---|
676 | |
---|
677 | ////////////////////////////////////////////////////////////////////////////// |
---|
678 | // The DMA_RSP_FSM handles the RAM responses to peripherals DMA transactions. |
---|
679 | ////////////////////////////////////////////////////////////////////////////// |
---|
680 | |
---|
681 | switch( r_dma_rsp_fsm.read() ) |
---|
682 | { |
---|
683 | ////////////////// |
---|
684 | case DMA_RSP_IDLE: // waiting a response from RAM betwork |
---|
685 | { |
---|
686 | if ( p_vci_ini_ram.rspval.read() ) |
---|
687 | { |
---|
688 | r_dma_rsp_fsm = DMA_RSP_FIFO_PUT; |
---|
689 | } |
---|
690 | break; |
---|
691 | } |
---|
692 | ////////////////////// |
---|
693 | case DMA_RSP_FIFO_PUT: |
---|
694 | { |
---|
695 | if(p_vci_ini_ram.rspval.read() and not r_alloc_fifo_dma_rsp_local.read() ) |
---|
696 | { |
---|
697 | dma_rsp_fifo_put = true; |
---|
698 | |
---|
699 | if(p_vci_ini_ram.reop.read()) r_dma_rsp_fsm = DMA_RSP_IDLE; |
---|
700 | |
---|
701 | #if DEBUG_DMA_RSP |
---|
702 | if( m_debug_activated ) |
---|
703 | std::cout << " <IOB DMA_RSP_FIFO_PUT> Push response into DMA_RSP fifo:" |
---|
704 | << " / rsrcid = " << std::hex << p_vci_ini_ram.rsrcid.read() |
---|
705 | << " / rtrdid = " << p_vci_ini_ram.rtrdid.read() |
---|
706 | << " / rdata = " << std::hex << p_vci_ini_ram.rdata.read() |
---|
707 | << " / rerror = " << p_vci_ini_ram.rerror.read() |
---|
708 | << " / reop = " << p_vci_ini_ram.reop.read() << std::endl; |
---|
709 | #endif |
---|
710 | } |
---|
711 | break; |
---|
712 | } |
---|
713 | } // end switch DMA_RSP_FSM |
---|
714 | |
---|
715 | ////////////////////////////////////////////////////////////////////////////////// |
---|
716 | // The TLB FSM handles TLB miss request (from DMA_CMD FSM), |
---|
717 | // and the PTE inval request (from CONFIG_CMD FSM). |
---|
718 | // PTE inval request have highest priority. In case of TLB miss, |
---|
719 | // this fsm searchs the requested PTE on the prefetch buffer. |
---|
720 | // In case of buffer miss, it request the MISS_WTI FSM to access the memory. |
---|
721 | // It bypass the first level page table access if possible. |
---|
722 | // It reset the r_dma_tlb_req flip-flop to signal TLB miss completion. |
---|
723 | // An unexpected, but possible page fault is signaled in r_tlb_miss_error flip_flop. |
---|
724 | //////////////////////////////////////////////////////////////////////////////////// |
---|
725 | |
---|
726 | switch (r_tlb_fsm.read()) |
---|
727 | { |
---|
728 | ////////////// |
---|
729 | case TLB_IDLE: // In case of TLB miss request, chek the prefetch buffer first |
---|
730 | // PTE inval request are handled as unmaskable interrupts |
---|
731 | { |
---|
732 | if ( r_config_tlb_req ) // Request from CONFIG FSM for a PTE invalidation |
---|
733 | { |
---|
734 | r_config_tlb_req = false; |
---|
735 | r_waiting_transaction = false; |
---|
736 | r_tlb_fsm = TLB_INVAL_CHECK; |
---|
737 | } |
---|
738 | |
---|
739 | else if ( r_dma_tlb_req.read() ) // request from DMA_CMD for a TLB Miss |
---|
740 | { |
---|
741 | // Checking prefetch buffer |
---|
742 | if( not r_tlb_buf_big_page ) // small page => PTE2 |
---|
743 | { |
---|
744 | if( r_tlb_buf_valid && // Hit on prefetch buffer |
---|
745 | (r_tlb_buf_vaddr.read() == |
---|
746 | (r_dma_cmd_vaddr.read()& ~PTE2_LINE_OFFSET & ~K_PAGE_OFFSET_MASK))) |
---|
747 | { |
---|
748 | size_t pte_offset = (r_dma_cmd_vaddr.read()& PTE2_LINE_OFFSET)>>12; |
---|
749 | uint32_t pte_flags = r_tlb_buf_data[2*pte_offset]; |
---|
750 | uint32_t pte_ppn = r_tlb_buf_data[2*pte_offset+1]; |
---|
751 | |
---|
752 | // Bit valid checking |
---|
753 | if ( not ( pte_flags & PTE_V_MASK) ) // unmapped |
---|
754 | { |
---|
755 | std::cout << "VCI_IO_BRIDGE ERROR : " << name() |
---|
756 | << " Page Table entry unmapped" << std::endl; |
---|
757 | |
---|
758 | r_tlb_miss_error = true; |
---|
759 | r_dma_tlb_req = false; |
---|
760 | #if DEBUG_TLB_MISS |
---|
761 | if ( m_debug_activated ) |
---|
762 | std::cout << " <IOB TLB_IDLE> PTE2 Unmapped" << std::hex |
---|
763 | << " / paddr = " << r_tlb_paddr.read() |
---|
764 | << " / PTE_FLAGS = " << pte_flags |
---|
765 | << " / PTE_PPN = " << pte_ppn << std::endl; |
---|
766 | #endif |
---|
767 | break; |
---|
768 | } |
---|
769 | |
---|
770 | // valid PTE2 : we must update the TLB |
---|
771 | r_tlb_pte_flags = pte_flags; |
---|
772 | r_tlb_pte_ppn = pte_ppn; |
---|
773 | r_tlb_fsm = TLB_PTE2_SELECT; |
---|
774 | #if DEBUG_TLB_MISS |
---|
775 | if ( m_debug_activated ) |
---|
776 | std::cout << " <IOB TLB_IDLE> Hit on prefetch buffer: PTE2" << std::hex |
---|
777 | << " / PTE_FLAGS = " << pte_flags |
---|
778 | << " / PTE_PPN = " << pte_ppn << std::endl; |
---|
779 | #endif |
---|
780 | break; |
---|
781 | } |
---|
782 | } |
---|
783 | else // big page => PTE1 |
---|
784 | { |
---|
785 | if( r_tlb_buf_valid && // Hit on prefetch buffer |
---|
786 | (r_tlb_buf_vaddr.read() == |
---|
787 | (r_dma_cmd_vaddr.read()& ~PTE1_LINE_OFFSET & ~M_PAGE_OFFSET_MASK ))) |
---|
788 | { |
---|
789 | size_t pte_offset = (r_dma_cmd_vaddr.read()& PTE1_LINE_OFFSET)>>21; |
---|
790 | uint32_t pte_flags = r_tlb_buf_data[pte_offset]; |
---|
791 | |
---|
792 | // Bit valid checking |
---|
793 | if ( not ( pte_flags & PTE_V_MASK) ) // unmapped |
---|
794 | { |
---|
795 | std::cout << "VCI_IO_BRIDGE ERROR : " << name() |
---|
796 | << " Page Table entry unmapped" << std::endl; |
---|
797 | |
---|
798 | r_tlb_miss_error = true; |
---|
799 | r_dma_tlb_req = false; |
---|
800 | #if DEBUG_TLB_MISS |
---|
801 | if ( m_debug_activated ) |
---|
802 | std::cout << " <IOB TLB_IDLE> PTE1 Unmapped" << std::hex |
---|
803 | << " / paddr = " << r_tlb_paddr.read() |
---|
804 | << " / PTE = " << pte_flags << std::endl; |
---|
805 | #endif |
---|
806 | break; |
---|
807 | } |
---|
808 | |
---|
809 | // valid PTE1 : we must update the TLB |
---|
810 | r_tlb_pte_flags = pte_flags; |
---|
811 | r_tlb_fsm = TLB_PTE1_SELECT; |
---|
812 | #if DEBUG_TLB_MISS |
---|
813 | if ( m_debug_activated ) |
---|
814 | std::cout << " <IOB TLB_PTE1_GET> Hit on prefetch buffer: PTE1" << std::hex |
---|
815 | << " / paddr = " << r_tlb_paddr.read() |
---|
816 | << std::hex << " / PTE1 = " << pte_flags << std::endl; |
---|
817 | #endif |
---|
818 | break; |
---|
819 | } |
---|
820 | } |
---|
821 | |
---|
822 | // prefetch buffer miss |
---|
823 | r_tlb_fsm = TLB_MISS; |
---|
824 | |
---|
825 | #if DEBUG_TLB_MISS |
---|
826 | if ( m_debug_activated ) |
---|
827 | std::cout << " <IOB TLB_IDLE> Miss on prefetch buffer" |
---|
828 | << std::hex << " / vaddr = " << r_dma_cmd_vaddr.read() << std::endl; |
---|
829 | #endif |
---|
830 | } |
---|
831 | break; |
---|
832 | } |
---|
833 | ////////////// |
---|
834 | case TLB_MISS: // handling tlb miss |
---|
835 | { |
---|
836 | uint32_t ptba = 0; |
---|
837 | bool bypass; |
---|
838 | vci_addr_t pte_paddr; |
---|
839 | |
---|
840 | #ifdef INSTRUMENTATION |
---|
841 | m_cpt_iotlbmiss_transaction++; |
---|
842 | #endif |
---|
843 | // evaluate bypass in order to skip first level page table access |
---|
844 | bypass = r_iotlb.get_bypass(r_dma_cmd_vaddr.read(), &ptba); |
---|
845 | |
---|
846 | // Request MISS_WTI_FSM a transaction on INT Network |
---|
847 | if ( not bypass ) // Read PTE1/PTD1 in XRAM |
---|
848 | { |
---|
849 | |
---|
850 | #if DEBUG_TLB_MISS |
---|
851 | if ( m_debug_activated ) |
---|
852 | std::cout << " <IOB TLB_MISS> Read PTE1/PTD1 in memory" << std::endl; |
---|
853 | #endif |
---|
854 | pte_paddr = (vci_addr_t)((r_iommu_ptpr.read()) << (INDEX1_NBITS+2)) | |
---|
855 | (vci_addr_t)((r_dma_cmd_vaddr.read() >> PAGE_M_NBITS) << 2); |
---|
856 | r_tlb_paddr = pte_paddr; |
---|
857 | |
---|
858 | r_tlb_miss_req = true; |
---|
859 | r_tlb_miss_type = PTE1_MISS; |
---|
860 | r_tlb_fsm = TLB_WAIT; |
---|
861 | } |
---|
862 | else // Read PTE2 in XRAM |
---|
863 | { |
---|
864 | |
---|
865 | #if DEBUG_TLB_MISS |
---|
866 | if ( m_debug_activated ) |
---|
867 | std::cout << " <IOB TLB_MISS> Read PTE2 in memory" << std::endl; |
---|
868 | #endif |
---|
869 | //&PTE2 = PTBA + IX2 * 8 |
---|
870 | pte_paddr = (vci_addr_t)ptba << PAGE_K_NBITS | |
---|
871 | (vci_addr_t)(r_dma_cmd_vaddr.read()&PTD_ID2_MASK)>>(PAGE_K_NBITS-3); |
---|
872 | |
---|
873 | r_tlb_paddr = pte_paddr; |
---|
874 | |
---|
875 | r_tlb_miss_req = true; |
---|
876 | r_tlb_miss_type = PTE2_MISS; |
---|
877 | r_tlb_fsm = TLB_WAIT; |
---|
878 | } |
---|
879 | |
---|
880 | break; |
---|
881 | } |
---|
882 | ////////////////// |
---|
883 | case TLB_PTE1_GET: // Try to read a PT1 entry in the miss buffer |
---|
884 | { |
---|
885 | |
---|
886 | uint32_t entry; |
---|
887 | |
---|
888 | vci_addr_t line_number = (vci_addr_t)((r_tlb_paddr.read())&(CACHE_LINE_MASK)); |
---|
889 | size_t word_position = (size_t)( ((r_tlb_paddr.read())&(~CACHE_LINE_MASK))>>2 ); |
---|
890 | |
---|
891 | // Hit test. Just to verify. |
---|
892 | // Hit must happen, since we've just finished its' miss transaction |
---|
893 | bool hit = (r_tlb_buf_valid && (r_tlb_buf_tag.read()== line_number) ); |
---|
894 | assert(hit and "Error: No hit on prefetch buffer after Miss Transaction"); |
---|
895 | |
---|
896 | entry = r_tlb_buf_data[word_position]; |
---|
897 | |
---|
898 | // Bit valid checking |
---|
899 | if ( not ( entry & PTE_V_MASK) ) // unmapped |
---|
900 | { |
---|
901 | //must not occur! |
---|
902 | std::cout << "IOMMU ERROR " << name() << "TLB_IDLE state" << std::endl |
---|
903 | << "The Page Table entry ins't valid (unmapped)" << std::endl; |
---|
904 | |
---|
905 | r_tlb_miss_error = true; |
---|
906 | r_dma_tlb_req = false; |
---|
907 | r_tlb_fsm = TLB_IDLE; |
---|
908 | |
---|
909 | #if DEBUG_TLB_MISS |
---|
910 | if ( m_debug_activated ) |
---|
911 | { |
---|
912 | std::cout << " <IOB DMA_PTE1_GET> First level entry Unmapped" |
---|
913 | << std::hex << " / paddr = " << r_tlb_paddr.read() |
---|
914 | << std::hex << " / PTE = " << entry << std::endl; |
---|
915 | } |
---|
916 | #endif |
---|
917 | break; |
---|
918 | } |
---|
919 | |
---|
920 | if( entry & PTE_T_MASK ) // PTD : me must access PT2 |
---|
921 | { |
---|
922 | // register bypass |
---|
923 | r_iotlb.set_bypass( r_dma_cmd_vaddr.read(), |
---|
924 | entry & ((1 << (vci_param_int::N-PAGE_K_NBITS)) - 1), |
---|
925 | 0); //nline, unused |
---|
926 | |
---|
927 | //&PTE2 = PTBA + IX2 * 8 |
---|
928 | // ps: PAGE_K_NBITS corresponds also to the size of a second level page table |
---|
929 | r_tlb_paddr = (vci_addr_t)(entry & ((1<<(vci_param_int::N-PAGE_K_NBITS))-1)) << PAGE_K_NBITS | |
---|
930 | (vci_addr_t)(((r_dma_cmd_vaddr.read() & PTD_ID2_MASK) >> PAGE_K_NBITS) << 3); |
---|
931 | r_tlb_miss_req = true; |
---|
932 | r_tlb_miss_type = PTE2_MISS; |
---|
933 | r_tlb_fsm = TLB_WAIT; |
---|
934 | |
---|
935 | #ifdef INSTRUMENTATION |
---|
936 | m_cpt_iotlbmiss_transaction++; |
---|
937 | #endif |
---|
938 | |
---|
939 | #if DEBUG_TLB_MISS |
---|
940 | if ( m_debug_activated ) |
---|
941 | std::cout << " <IOB TLB_PTE1_GET> Success. Search PTE2" << std::hex |
---|
942 | << " / PADDR = " << r_tlb_paddr.read() |
---|
943 | << " / PTD = " << entry << std::endl; |
---|
944 | #endif |
---|
945 | } |
---|
946 | else // PTE1 : we must update the IOTLB |
---|
947 | // Should not occur if working only with small pages |
---|
948 | { |
---|
949 | r_tlb_pte_flags = entry; |
---|
950 | r_tlb_fsm = TLB_PTE1_SELECT; |
---|
951 | |
---|
952 | #if DEBUG_TLB_MISS |
---|
953 | if ( m_debug_activated ) |
---|
954 | std::cout << " <IOB TLB_PTE1_GET> Success. Big page" |
---|
955 | << std::hex << " / paddr = " << r_tlb_paddr.read() |
---|
956 | << std::hex << " / PTE1 = " << entry << std::endl; |
---|
957 | #endif |
---|
958 | } |
---|
959 | break; |
---|
960 | } |
---|
961 | ///////////////////// |
---|
962 | case TLB_PTE1_SELECT: // select a slot for PTE1 |
---|
963 | { |
---|
964 | size_t way; |
---|
965 | size_t set; |
---|
966 | |
---|
967 | r_iotlb.select( r_dma_cmd_vaddr.read(), |
---|
968 | true, // PTE1 |
---|
969 | &way, |
---|
970 | &set ); |
---|
971 | #ifdef INSTRUMENTATION |
---|
972 | m_cpt_iotlb_read++; |
---|
973 | #endif |
---|
974 | |
---|
975 | #if DEBUG_TLB_MISS |
---|
976 | if ( m_debug_activated ) |
---|
977 | std::cout << " <IOB TLB_PTE1_SELECT> Select a slot in TLB" |
---|
978 | << " / way = " << std::dec << way |
---|
979 | << " / set = " << set << std::endl; |
---|
980 | #endif |
---|
981 | r_tlb_way = way; |
---|
982 | r_tlb_set = set; |
---|
983 | r_tlb_fsm = TLB_PTE1_UPDT; |
---|
984 | break; |
---|
985 | } |
---|
986 | /////////////////// |
---|
987 | case TLB_PTE1_UPDT: // write a new PTE1 in tlb |
---|
988 | // not necessary to treat the L/R bit |
---|
989 | { |
---|
990 | uint32_t pte = r_tlb_pte_flags.read(); |
---|
991 | |
---|
992 | r_tlb_paddr = (vci_addr_t)( ((r_tlb_pte_flags.read() & PPN1_MASK) << 21) |
---|
993 | | (r_dma_cmd_vaddr.read()& M_PAGE_OFFSET_MASK) ); |
---|
994 | |
---|
995 | // update TLB |
---|
996 | r_iotlb.write( true, // 2M page |
---|
997 | pte, |
---|
998 | 0, // argument unused for a PTE1 |
---|
999 | r_dma_cmd_vaddr.read(), |
---|
1000 | r_tlb_way.read(), |
---|
1001 | r_tlb_set.read(), |
---|
1002 | 0 ); //we set nline = 0 |
---|
1003 | #ifdef INSTRUMENTATION |
---|
1004 | m_cpt_iotlb_write++; |
---|
1005 | #endif |
---|
1006 | |
---|
1007 | #if DEBUG_TLB_MISS |
---|
1008 | if ( m_debug_activated ) |
---|
1009 | { |
---|
1010 | std::cout << " <IOB TLB_PTE1_UPDT> write PTE1 in TLB" |
---|
1011 | << " / set = " << std::dec << r_tlb_set.read() |
---|
1012 | << " / way = " << r_tlb_way.read() << std::endl; |
---|
1013 | r_iotlb.printTrace(); |
---|
1014 | } |
---|
1015 | #endif |
---|
1016 | // next state |
---|
1017 | r_tlb_fsm = TLB_RETURN; // exit sub-fsm |
---|
1018 | break; |
---|
1019 | } |
---|
1020 | ////////////////// |
---|
1021 | case TLB_PTE2_GET: // Try to read a PTE2 (64 bits) in the miss buffer |
---|
1022 | { |
---|
1023 | uint32_t pte_flags; |
---|
1024 | uint32_t pte_ppn; |
---|
1025 | |
---|
1026 | vci_addr_t line_number = (vci_addr_t)((r_tlb_paddr.read())&(CACHE_LINE_MASK)); |
---|
1027 | size_t word_position = (size_t)( ((r_tlb_paddr.read())&(~CACHE_LINE_MASK))>>2 ); |
---|
1028 | |
---|
1029 | |
---|
1030 | // Hit test. Just to verify. |
---|
1031 | bool hit = (r_tlb_buf_valid && (r_tlb_buf_tag.read()== line_number) ); |
---|
1032 | assert(hit and "Error: No hit on prefetch buffer after Miss Transaction"); |
---|
1033 | pte_flags= r_tlb_buf_data[word_position]; |
---|
1034 | pte_ppn= r_tlb_buf_data[word_position+1]; //because PTE2 is 2 words long |
---|
1035 | // Bit valid checking |
---|
1036 | if ( not ( pte_flags & PTE_V_MASK) ) // unmapped |
---|
1037 | { |
---|
1038 | //must not occur! |
---|
1039 | std::cout << "IOMMU ERROR " << name() << "TLB_IDLE state" << std::endl |
---|
1040 | << "The Page Table entry ins't valid (unmapped)" << std::endl; |
---|
1041 | |
---|
1042 | r_tlb_miss_error = true; |
---|
1043 | r_dma_tlb_req = false; |
---|
1044 | r_tlb_fsm = TLB_IDLE; |
---|
1045 | |
---|
1046 | #if DEBUG_TLB_MISS |
---|
1047 | if ( m_debug_activated ) |
---|
1048 | std::cout << " <IOB TLB_PTE2_GET> PTE2 Unmapped" << std::hex |
---|
1049 | << " / PADDR = " << r_tlb_paddr.read() |
---|
1050 | << " / PTE = " << pte_flags << std::endl; |
---|
1051 | #endif |
---|
1052 | break; |
---|
1053 | } |
---|
1054 | |
---|
1055 | r_tlb_pte_flags = pte_flags; |
---|
1056 | r_tlb_pte_ppn = pte_ppn; |
---|
1057 | r_tlb_fsm = TLB_PTE2_SELECT; |
---|
1058 | |
---|
1059 | #if DEBUG_TLB_MISS |
---|
1060 | if ( m_debug_activated ) |
---|
1061 | std::cout << " <IOB TLB_PTE2_GET> Mapped" << std::hex |
---|
1062 | << " / PTE_FLAGS = " << pte_flags |
---|
1063 | << " / PTE_PPN = " << pte_ppn << std::endl; |
---|
1064 | #endif |
---|
1065 | break; |
---|
1066 | } |
---|
1067 | //////////////////////////// |
---|
1068 | case TLB_PTE2_SELECT: // select a slot for PTE2 |
---|
1069 | { |
---|
1070 | size_t way; |
---|
1071 | size_t set; |
---|
1072 | |
---|
1073 | r_iotlb.select( r_dma_cmd_vaddr.read(), |
---|
1074 | false, // PTE2 |
---|
1075 | &way, |
---|
1076 | &set ); |
---|
1077 | #ifdef INSTRUMENTATION |
---|
1078 | m_cpt_iotlb_read++; |
---|
1079 | #endif |
---|
1080 | |
---|
1081 | #if DEBUG_TLB_MISS |
---|
1082 | if ( m_debug_activated ) |
---|
1083 | { |
---|
1084 | std::cout << " <IOB TLB_PTE2_SELECT> Select a slot in IOTLB:"; |
---|
1085 | std::cout << " way = " << std::dec << way |
---|
1086 | << " / set = " << set << std::endl; |
---|
1087 | } |
---|
1088 | #endif |
---|
1089 | r_tlb_way = way; |
---|
1090 | r_tlb_set = set; |
---|
1091 | r_tlb_fsm = TLB_PTE2_UPDT; |
---|
1092 | break; |
---|
1093 | } |
---|
1094 | /////////////////// |
---|
1095 | case TLB_PTE2_UPDT: // write a new PTE2 in tlb |
---|
1096 | // not necessary to treat the L/R bit |
---|
1097 | { |
---|
1098 | uint32_t pte_flags = r_tlb_pte_flags.read(); |
---|
1099 | uint32_t pte_ppn = r_tlb_pte_ppn.read(); |
---|
1100 | |
---|
1101 | r_tlb_paddr = (vci_addr_t)( ((r_tlb_pte_ppn.read() & PPN2_MASK) << 12) |
---|
1102 | | (r_dma_cmd_vaddr.read()& K_PAGE_OFFSET_MASK) ); |
---|
1103 | |
---|
1104 | // update TLB for a PTE2 |
---|
1105 | r_iotlb.write( false, // 4K page |
---|
1106 | pte_flags, |
---|
1107 | pte_ppn, |
---|
1108 | r_dma_cmd_vaddr.read(), |
---|
1109 | r_tlb_way.read(), |
---|
1110 | r_tlb_set.read(), |
---|
1111 | 0 ); // nline = 0 |
---|
1112 | #ifdef INSTRUMENTATION |
---|
1113 | m_cpt_iotlb_write++; |
---|
1114 | #endif |
---|
1115 | |
---|
1116 | #if DEBUG_TLB_MISS |
---|
1117 | if ( m_debug_activated ) |
---|
1118 | { |
---|
1119 | std::cout << " <IOB TLB_PTE2_UPDT> write PTE2 in IOTLB"; |
---|
1120 | std::cout << " / set = " << std::dec << r_tlb_set.read() |
---|
1121 | << " / way = " << r_tlb_way.read() << std::endl; |
---|
1122 | r_iotlb.printTrace(); |
---|
1123 | } |
---|
1124 | #endif |
---|
1125 | // next state |
---|
1126 | r_tlb_fsm = TLB_RETURN; |
---|
1127 | break; |
---|
1128 | } |
---|
1129 | ////////////// |
---|
1130 | case TLB_WAIT: // waiting completion of a miss transaction from MISS_WTI FSM |
---|
1131 | // PTE inval request are handled as unmaskable interrupts |
---|
1132 | { |
---|
1133 | if ( r_config_tlb_req ) // Request from CONFIG FSM for a PTE invalidation |
---|
1134 | { |
---|
1135 | r_config_tlb_req = false; |
---|
1136 | r_waiting_transaction = true; |
---|
1137 | r_tlb_fsm = TLB_INVAL_CHECK; |
---|
1138 | } |
---|
1139 | |
---|
1140 | #ifdef INSTRUMENTATION |
---|
1141 | m_cost_iotlbmiss_transaction++; |
---|
1142 | #endif |
---|
1143 | if ( not r_tlb_miss_req ) // Miss transaction is done |
---|
1144 | { |
---|
1145 | if ( r_miss_wti_rsp_error.read() ) // bus error |
---|
1146 | { |
---|
1147 | r_miss_wti_rsp_error = false; |
---|
1148 | r_tlb_miss_error = true; |
---|
1149 | r_dma_tlb_req = false; |
---|
1150 | r_tlb_fsm = TLB_IDLE; |
---|
1151 | } |
---|
1152 | else if(r_tlb_miss_type == PTE1_MISS) |
---|
1153 | { |
---|
1154 | r_tlb_fsm = TLB_PTE1_GET; |
---|
1155 | } |
---|
1156 | else |
---|
1157 | { |
---|
1158 | r_tlb_fsm = TLB_PTE2_GET; |
---|
1159 | } |
---|
1160 | } |
---|
1161 | break; |
---|
1162 | } |
---|
1163 | //////////////// |
---|
1164 | case TLB_RETURN: // reset r_dma_tlb_req flip-flop to signal TLB miss completion |
---|
1165 | // possible errors are signaled through r_tlb_miss_error |
---|
1166 | { |
---|
1167 | #if DEBUG_TLB_MISS |
---|
1168 | if ( m_debug_activated ) |
---|
1169 | std::cout << " <IOB TLB_RETURN> IOTLB MISS completed" << std::endl; |
---|
1170 | #endif |
---|
1171 | r_dma_tlb_req = false; |
---|
1172 | r_tlb_fsm = TLB_IDLE; |
---|
1173 | break; |
---|
1174 | } |
---|
1175 | ///////////////////// |
---|
1176 | case TLB_INVAL_CHECK: // request from CONFIG_FSM to invalidate all PTE in a given line |
---|
1177 | // checks the necessity to invalidate prefetch buffer |
---|
1178 | { |
---|
1179 | // If a transaction is pending, no need to invalidate the prefetch |
---|
1180 | // We can ignore it, since we'll replace the line. |
---|
1181 | // The new line is necessarily up-to-date |
---|
1182 | if(!r_waiting_transaction.read() && r_tlb_buf_valid) |
---|
1183 | { |
---|
1184 | if(!r_tlb_buf_big_page) |
---|
1185 | { |
---|
1186 | if( r_tlb_buf_vaddr.read() == |
---|
1187 | (r_config_cmd_inval_vaddr.read()& ~PTE2_LINE_OFFSET) ) |
---|
1188 | // The virtual address corresponds to one entry on the buffer line |
---|
1189 | { |
---|
1190 | r_tlb_buf_valid = false; //change here for individual invalidation |
---|
1191 | } |
---|
1192 | } |
---|
1193 | else // First level entries on buffer. Unused if only small pages |
---|
1194 | { |
---|
1195 | if( r_tlb_buf_vaddr.read() == |
---|
1196 | (r_config_cmd_inval_vaddr.read()& ~PTE1_LINE_OFFSET) ) |
---|
1197 | // The virtual address corresponds to one entry on the buffer line |
---|
1198 | { |
---|
1199 | r_tlb_buf_valid = false; //change here for individual invalidation |
---|
1200 | } |
---|
1201 | } |
---|
1202 | } |
---|
1203 | |
---|
1204 | // Invalidation on IOTLB |
---|
1205 | bool ok; |
---|
1206 | ok = r_iotlb.inval(r_config_cmd_inval_vaddr.read()); |
---|
1207 | |
---|
1208 | if(r_waiting_transaction.read()) r_tlb_fsm =TLB_WAIT; |
---|
1209 | else r_tlb_fsm = TLB_IDLE; |
---|
1210 | break; |
---|
1211 | } |
---|
1212 | } //end switch r_tlb_fsm |
---|
1213 | |
---|
1214 | //////////////////////////////////////////////////////////////////////////////// |
---|
1215 | // The CONFIG_CMD_FSM handles the VCI commands from the INT network. |
---|
1216 | // This FSM is mainly intended to handle single flit config transactions, |
---|
1217 | // but it can also handle software driven, multi-flits data transactions. |
---|
1218 | // The configuration requests can be local (IO_BRIDGE config registers) |
---|
1219 | // or remote (config registers of peripherals on IOX network). |
---|
1220 | // - The local configuration segment is identified by the "special" atribute. |
---|
1221 | // - All configuration requests are checkeg against segmentation violation. |
---|
1222 | // - In case of local config request, or in case of segmentation violation, |
---|
1223 | // the FSM put a VCI response request in CONFIG_RSP fifo. |
---|
1224 | // - In case of remote transaction, it put the VCI command in CONFIG_CMD fifo. |
---|
1225 | /////////////////////////////////////////////////////////////////////////////// |
---|
1226 | |
---|
1227 | switch( r_config_cmd_fsm.read() ) |
---|
1228 | { |
---|
1229 | ///////////////////// |
---|
1230 | case CONFIG_CMD_IDLE: // waiting VCI command |
---|
1231 | { |
---|
1232 | if ( p_vci_tgt_int.cmdval.read() ) |
---|
1233 | { |
---|
1234 | |
---|
1235 | #if DEBUG_CONFIG_CMD |
---|
1236 | if( m_debug_activated ) |
---|
1237 | std::cout << " <IOB CONFIG_CMD_IDLE> Command received" |
---|
1238 | << " / address = " << std::hex << p_vci_tgt_int.address.read() |
---|
1239 | << " / srcid = " << std::dec << p_vci_tgt_int.srcid.read() |
---|
1240 | << " / trdid = " << p_vci_tgt_int.trdid.read() |
---|
1241 | << " / wdata = " << std::hex << p_vci_tgt_int.wdata.read() |
---|
1242 | << " / be = " << p_vci_tgt_int.be.read() |
---|
1243 | << " / plen = " << std::dec << p_vci_tgt_int.plen.read() |
---|
1244 | << " / eop = " << p_vci_tgt_int.eop.read() << std::endl; |
---|
1245 | #endif |
---|
1246 | vci_addr_t paddr = p_vci_tgt_int.address.read(); |
---|
1247 | bool read = (p_vci_tgt_int.cmd.read() == vci_param_int::CMD_READ); |
---|
1248 | uint32_t cell = (uint32_t)((paddr & 0x1FF)>>2); |
---|
1249 | |
---|
1250 | // chek segments |
---|
1251 | std::list<soclib::common::Segment>::iterator seg; |
---|
1252 | bool found = false; |
---|
1253 | bool special = false; |
---|
1254 | for ( seg = m_int_seglist.begin() ; |
---|
1255 | seg != m_int_seglist.end() and not found ; seg++ ) |
---|
1256 | { |
---|
1257 | if ( seg->contains(paddr) ) |
---|
1258 | { |
---|
1259 | found = true; |
---|
1260 | special = seg->special(); |
---|
1261 | } |
---|
1262 | } |
---|
1263 | |
---|
1264 | if ( found and special ) // IO_BRIDGE itself |
---|
1265 | { |
---|
1266 | uint32_t rdata = 0; |
---|
1267 | bool rerror = false; |
---|
1268 | |
---|
1269 | if ( not read && (cell == IOB_IOMMU_PTPR) ) // WRITE PTPR |
---|
1270 | { |
---|
1271 | r_iommu_ptpr = (uint32_t)p_vci_tgt_int.wdata.read(); |
---|
1272 | } |
---|
1273 | else if ( read && (cell == IOB_IOMMU_PTPR) ) // READ PTPR |
---|
1274 | { |
---|
1275 | rdata = r_iommu_ptpr.read(); |
---|
1276 | } |
---|
1277 | else if( not read && (cell == IOB_WTI_ENABLE)) // WRITE WTI_ENABLE |
---|
1278 | { |
---|
1279 | r_iommu_wti_enable = p_vci_tgt_int.wdata.read(); |
---|
1280 | } |
---|
1281 | else if( read && (cell == IOB_WTI_ENABLE)) // READ WTI ENABLE |
---|
1282 | { |
---|
1283 | rdata = r_iommu_wti_enable.read(); |
---|
1284 | } |
---|
1285 | else if( read && (cell == IOB_IOMMU_BVAR)) // READ BVAR |
---|
1286 | { |
---|
1287 | rdata = r_iommu_bvar.read(); |
---|
1288 | } |
---|
1289 | else if( read && (cell == IOB_IOMMU_ETR)) // READ ETR |
---|
1290 | { |
---|
1291 | rdata = r_iommu_etr.read(); |
---|
1292 | } |
---|
1293 | else if( read && (cell == IOB_IOMMU_BAD_ID)) // READ BAD_ID |
---|
1294 | { |
---|
1295 | rdata = r_iommu_bad_id.read(); |
---|
1296 | } |
---|
1297 | else if( not read && (cell == IOB_INVAL_PTE)) // WRITE INVAL_PTE |
---|
1298 | { |
---|
1299 | r_config_tlb_req = true; |
---|
1300 | r_config_cmd_inval_vaddr = (uint32_t)p_vci_tgt_int.wdata.read(); |
---|
1301 | } |
---|
1302 | else if( not read && (cell == IOB_WTI_ADDR_LO)) // WRITE WTI_PADDR_LO |
---|
1303 | { |
---|
1304 | r_iommu_wti_paddr = (vci_addr_t)p_vci_tgt_int.wdata.read(); |
---|
1305 | } |
---|
1306 | else if( read && (cell == IOB_WTI_ADDR_LO)) // READ WTI_PADDR_LO |
---|
1307 | { |
---|
1308 | rdata = (uint32_t)r_iommu_wti_paddr.read(); |
---|
1309 | } |
---|
1310 | else if( not read && (cell == IOB_WTI_ADDR_HI)) // WRITE WTI_PADDR_HI |
---|
1311 | { |
---|
1312 | r_iommu_wti_paddr = (r_iommu_wti_paddr.read() & 0x00000000FFFFFFFFLL) | |
---|
1313 | ((vci_addr_t)p_vci_tgt_int.wdata.read())<<32; |
---|
1314 | } |
---|
1315 | else if( read && (cell == IOB_WTI_ADDR_HI)) // READ WTI_PADDR_HI |
---|
1316 | { |
---|
1317 | rdata = (uint32_t)(r_iommu_wti_paddr.read()>>32); |
---|
1318 | } |
---|
1319 | else if( not read && ((cell >= IOB_PERI_WTI_BEGIN) // WRITE PERI WTI |
---|
1320 | && (cell< (IOB_PERI_WTI_BEGIN + 64))) ) |
---|
1321 | { |
---|
1322 | size_t index = (cell - IOB_PERI_WTI_BEGIN)/2; |
---|
1323 | bool high = (cell - IOB_PERI_WTI_BEGIN)%2; |
---|
1324 | if ( high ) r_iommu_peri_wti[index] = // set 32 MSB bits |
---|
1325 | (r_iommu_peri_wti[index].read() & 0x00000000FFFFFFFFLL) | |
---|
1326 | ((vci_addr_t)p_vci_tgt_int.wdata.read())<<32; |
---|
1327 | else r_iommu_peri_wti[index] = // set 32 LSB bits |
---|
1328 | (vci_addr_t)p_vci_tgt_int.wdata.read(); |
---|
1329 | } |
---|
1330 | else if( read && ((cell >= IOB_PERI_WTI_BEGIN) // READ PERI WTI |
---|
1331 | && (cell< (IOB_PERI_WTI_BEGIN + 64))) ) |
---|
1332 | { |
---|
1333 | size_t index = (cell - IOB_PERI_WTI_BEGIN)/2; |
---|
1334 | bool high = (cell - IOB_PERI_WTI_BEGIN)%2; |
---|
1335 | if ( high ) rdata = (uint32_t)(r_iommu_peri_wti[index].read()>>32); |
---|
1336 | else rdata = (uint32_t)(r_iommu_peri_wti[index].read()); |
---|
1337 | } |
---|
1338 | else // Error: Wrong address, or invalid operation. |
---|
1339 | { |
---|
1340 | rerror = true; |
---|
1341 | } |
---|
1342 | r_config_cmd_rdata = rdata; |
---|
1343 | r_config_cmd_error = rerror; |
---|
1344 | r_config_cmd_fsm = CONFIG_CMD_FIFO_PUT_RSP; |
---|
1345 | } |
---|
1346 | else if ( found ) // remote peripheral |
---|
1347 | { |
---|
1348 | r_config_cmd_fsm = CONFIG_CMD_FIFO_PUT_CMD; |
---|
1349 | } |
---|
1350 | else // out of segment |
---|
1351 | { |
---|
1352 | r_config_cmd_rdata = 0; |
---|
1353 | r_config_cmd_error = true; |
---|
1354 | r_config_cmd_fsm = CONFIG_CMD_FIFO_PUT_RSP; |
---|
1355 | } |
---|
1356 | } // end if cmdval |
---|
1357 | break; |
---|
1358 | } |
---|
1359 | ///////////////////////////// |
---|
1360 | case CONFIG_CMD_FIFO_PUT_CMD: // transmit VCI command from the INT network |
---|
1361 | // to the CONFIG_CMD fifo to IOX network |
---|
1362 | { |
---|
1363 | config_cmd_fifo_put = true; |
---|
1364 | |
---|
1365 | if ( p_vci_tgt_int.cmdval.read() and m_config_cmd_addr_fifo.wok() ) |
---|
1366 | { |
---|
1367 | |
---|
1368 | #if DEBUG_CONFIG_CMD |
---|
1369 | if( m_debug_activated ) |
---|
1370 | std::cout << " <IOB CONFIG_CMD_FIFO_PUT_CMD> Transmit VCI command to IOX network" |
---|
1371 | << " : address = " << std::hex << p_vci_tgt_int.address.read() |
---|
1372 | << " / srcid = " << p_vci_tgt_int.srcid.read() |
---|
1373 | << std::endl; |
---|
1374 | #endif |
---|
1375 | if( p_vci_tgt_int.eop.read() ) r_config_cmd_fsm = CONFIG_CMD_IDLE; |
---|
1376 | } |
---|
1377 | break; |
---|
1378 | } |
---|
1379 | ///////////////////////////// |
---|
1380 | case CONFIG_CMD_FIFO_PUT_RSP: // Try to put a response in CONFIG_RSP fifo, |
---|
1381 | // for a local configuration transaction. |
---|
1382 | // The FIFO is shared with CONFIG_RSP FSM |
---|
1383 | // and must we wait for allocation... |
---|
1384 | { |
---|
1385 | if ( p_vci_tgt_int.cmdval.read() and r_alloc_fifo_config_rsp_local.read() ) |
---|
1386 | { |
---|
1387 | config_rsp_fifo_put = true; |
---|
1388 | |
---|
1389 | if ( m_config_rsp_data_fifo.wok() ) |
---|
1390 | { |
---|
1391 | |
---|
1392 | #if DEBUG_CONFIG_CMD |
---|
1393 | if( m_debug_activated ) |
---|
1394 | std::cout << " <IOB CONFIG_CMD_FIFO_PUT_RSP> Response to a local configuration request" |
---|
1395 | << std::endl; |
---|
1396 | #endif |
---|
1397 | if( p_vci_tgt_int.eop.read() ) r_config_cmd_fsm = CONFIG_CMD_IDLE; |
---|
1398 | } |
---|
1399 | } |
---|
1400 | break; |
---|
1401 | } |
---|
1402 | } // end switch CONFIG_CMD FSM |
---|
1403 | |
---|
1404 | ////////////////////////////////////////////////////////////////////////////// |
---|
1405 | // The CONFIG_RSP_FSM handles the VCI responses from the periherals |
---|
1406 | // on the IOX network and writes the responses in the CONFIG_RSP fifo. |
---|
1407 | // The VCI response flit is only consumed in the FIFO_PUT state. |
---|
1408 | // This FSM is mainly intended to handle single flit config transactions, |
---|
1409 | // but it can also handle software driven, multi-flits data transactions. |
---|
1410 | ////////////////////////////////////////////////////////////////////////////// |
---|
1411 | |
---|
1412 | switch( r_config_rsp_fsm.read() ) |
---|
1413 | { |
---|
1414 | ///////////////////// |
---|
1415 | case CONFIG_RSP_IDLE: // waiting a VCI response from IOX network |
---|
1416 | { |
---|
1417 | if ( p_vci_ini_iox.rspval.read() ) |
---|
1418 | { |
---|
1419 | r_config_rsp_fsm = CONFIG_RSP_FIFO_PUT; |
---|
1420 | } |
---|
1421 | break; |
---|
1422 | } |
---|
1423 | ///////////////////////// |
---|
1424 | case CONFIG_RSP_FIFO_PUT: // try to write into CONFIG_RSP fifo |
---|
1425 | // as soon as it is allocated |
---|
1426 | { |
---|
1427 | if ( p_vci_ini_iox.rspval.read() and not r_alloc_fifo_config_rsp_local.read() ) |
---|
1428 | { |
---|
1429 | config_rsp_fifo_put = true; |
---|
1430 | |
---|
1431 | if ( m_config_rsp_data_fifo.wok() ) |
---|
1432 | { |
---|
1433 | if ( p_vci_ini_iox.reop.read() ) r_config_rsp_fsm = CONFIG_RSP_IDLE; |
---|
1434 | |
---|
1435 | #if DEBUG_CONFIG_RSP |
---|
1436 | if( m_debug_activated ) |
---|
1437 | std::cout << " <IOB CONFIG_RSP_FIFO_PUT> Push response into CONFIG_RSP fifo:" |
---|
1438 | << " / rsrcid = " << std::hex << p_vci_ini_iox.rsrcid.read() |
---|
1439 | << " / rtrdid = " << p_vci_ini_iox.rtrdid.read() |
---|
1440 | << " / rdata = " << p_vci_ini_iox.rdata.read() |
---|
1441 | << " / reop = " << p_vci_ini_iox.reop.read() |
---|
1442 | << " / rerror = " << p_vci_ini_iox.rerror.read() << std::endl; |
---|
1443 | #endif |
---|
1444 | } |
---|
1445 | |
---|
1446 | } |
---|
1447 | break; |
---|
1448 | } |
---|
1449 | } // end switch CONFIG_RSP FSM |
---|
1450 | |
---|
1451 | ///////////////////////////////////////////////////////////////////////////////// |
---|
1452 | // If the IOB component has IRQ ports, the IRQ FSM detects all changes |
---|
1453 | // on the 32 p_irq[i] ports and request a VCI write transaction to the |
---|
1454 | // MISS_INIT FSM, using the 64 r_irq_request[i] and r_irq_pending[i] flip-flops. |
---|
1455 | ///////////////////////////////////////////////////////////////////////////////// |
---|
1456 | |
---|
1457 | if ( m_has_irqs ) |
---|
1458 | { |
---|
1459 | for ( size_t i = 0; i<32; ++i ) |
---|
1460 | { |
---|
1461 | r_irq_request[i] = ( p_irq[i]->read() == not r_irq_pending[i].read() ); |
---|
1462 | r_irq_pending[i] = p_irq[i]->read(); |
---|
1463 | } |
---|
1464 | } |
---|
1465 | |
---|
1466 | /////////////////////////////////////////////////////////////////////////////////// |
---|
1467 | // The MISS_WTI_CMD FSM send VCI commands on the Internal Network. |
---|
1468 | // It handles PTE MISS requests from TLB_MISS FSM and software IRQs. |
---|
1469 | // It supports several simultaneous VCI transactions. |
---|
1470 | //////////////////////////////////////////////////////////////////////////////////// |
---|
1471 | |
---|
1472 | switch ( r_miss_wti_cmd_fsm.read() ) |
---|
1473 | { |
---|
1474 | /////////////////////// |
---|
1475 | case MISS_WTI_CMD_IDLE: // TLB MISS have highest priority |
---|
1476 | { |
---|
1477 | if ( r_tlb_miss_req.read() ) |
---|
1478 | { |
---|
1479 | r_miss_wti_cmd_fsm = MISS_WTI_CMD_MISS; |
---|
1480 | } |
---|
1481 | else if ( r_iommu_wti_enable.read() ) |
---|
1482 | { |
---|
1483 | // checking if there is a new pending interrupt |
---|
1484 | bool found = false; |
---|
1485 | size_t n; |
---|
1486 | for ( n = 0 ; (n < 32) and not found ; n++ ) |
---|
1487 | { |
---|
1488 | if ( r_irq_request[n] ) found = true; |
---|
1489 | } |
---|
1490 | if ( found ) |
---|
1491 | { |
---|
1492 | r_miss_wti_cmd_index = n; |
---|
1493 | r_miss_wti_cmd_fsm = MISS_WTI_CMD_WTI; |
---|
1494 | } |
---|
1495 | } |
---|
1496 | break; |
---|
1497 | } |
---|
1498 | ////////////////////// |
---|
1499 | case MISS_WTI_CMD_WTI: // send a single flit IRQ WRITE on INT Network |
---|
1500 | // address is defined by IRQ_VECTOR[r_miss_wti_index] |
---|
1501 | // data is defined by r_irq_pending[r_miss_wti_index] |
---|
1502 | { |
---|
1503 | if ( p_vci_ini_int.cmdack ) |
---|
1504 | { |
---|
1505 | // reset the request |
---|
1506 | r_irq_request[r_miss_wti_cmd_index.read()] = false; |
---|
1507 | r_miss_wti_cmd_fsm = MISS_WTI_RSP_WTI; |
---|
1508 | |
---|
1509 | #if DEBUG_MISS_WTI |
---|
1510 | if( m_debug_activated ) |
---|
1511 | std::cout << " <IOB MISS_WTI_CMD_WTI> Send WTI write command on Internal Network" |
---|
1512 | << " / IRQID = " << std::dec << r_miss_wti_cmd_index.read() << std::endl; |
---|
1513 | #endif |
---|
1514 | } |
---|
1515 | break; |
---|
1516 | } |
---|
1517 | /////////////////////// |
---|
1518 | case MISS_WTI_CMD_MISS: // send a TLB MISS request on INT Network |
---|
1519 | { |
---|
1520 | if ( p_vci_ini_int.cmdack ) |
---|
1521 | { |
---|
1522 | r_tlb_buf_tag = ( (r_tlb_paddr.read()) & CACHE_LINE_MASK ); |
---|
1523 | r_tlb_buf_valid = true; |
---|
1524 | |
---|
1525 | if( r_tlb_miss_type.read() == PTE1_MISS ) |
---|
1526 | r_tlb_buf_vaddr = (r_dma_cmd_vaddr.read() & |
---|
1527 | ~M_PAGE_OFFSET_MASK & ~PTE1_LINE_OFFSET); |
---|
1528 | else |
---|
1529 | r_tlb_buf_vaddr = (r_dma_cmd_vaddr.read() & |
---|
1530 | ~K_PAGE_OFFSET_MASK & ~PTE2_LINE_OFFSET); |
---|
1531 | |
---|
1532 | r_miss_wti_cmd_fsm = MISS_WTI_RSP_MISS; |
---|
1533 | |
---|
1534 | #if DEBUG_MISS_WTI |
---|
1535 | if( m_debug_activated ) |
---|
1536 | std::cout << " <IOB MISS_WTI_CMD_MISS> Send TLB MISS command on Internal Network" << std::hex |
---|
1537 | << " / address = " <<(vci_addr_t)((r_tlb_paddr.read())& CACHE_LINE_MASK) << std::endl; |
---|
1538 | #endif |
---|
1539 | } |
---|
1540 | break; |
---|
1541 | } |
---|
1542 | } // end switch r_miss_wti_cmd_fsm |
---|
1543 | |
---|
1544 | /////////////////////////////////////////////////////////////////////////////////// |
---|
1545 | // The MISS_WTI_RSP FSM handles VCI responses on the Internal Network. |
---|
1546 | // it can be response to TLB MISS (read transaction) or WTI (write transaction). |
---|
1547 | // It supports several simultaneous VCI transactions. |
---|
1548 | //////////////////////////////////////////////////////////////////////////////////// |
---|
1549 | |
---|
1550 | switch ( r_miss_wti_rsp_fsm.read() ) |
---|
1551 | { |
---|
1552 | case MISS_WTI_RSP_IDLE: // waiting a VCI response |
---|
1553 | { |
---|
1554 | if ( p_vci_ini_int.rspval.read() ) |
---|
1555 | { |
---|
1556 | if ( p_vci_ini_int.rpktid.read() == PKTID_READ ) // it's a TLB MISS response |
---|
1557 | { |
---|
1558 | r_miss_wti_rsp_fsm = MISS_WTI_RSP_MISS; |
---|
1559 | r_miss_wti_rsp_count = 0; |
---|
1560 | } |
---|
1561 | else // it's a WTI WRITE response |
---|
1562 | { |
---|
1563 | r_miss_wti_rsp_fsm = MISS_WTI_RSP_WTI; |
---|
1564 | |
---|
1565 | } |
---|
1566 | } |
---|
1567 | break; |
---|
1568 | } |
---|
1569 | ////////////////////// |
---|
1570 | case MISS_WTI_RSP_WTI: // Handling response to a WTI transaction |
---|
1571 | { |
---|
1572 | assert( p_vci_ini_int.reop.read() and |
---|
1573 | "VCI_IO_BRIDGE ERROR: IRQ Write response should have one single flit" ); |
---|
1574 | |
---|
1575 | assert( ( (p_vci_ini_int.rerror.read()&0x1) == 0 ) and |
---|
1576 | "VCI_IO_BRIDGE ERROR: IRQ Write response error !!!" ); |
---|
1577 | // TODO traiter error using the IOMMU IRQ |
---|
1578 | |
---|
1579 | #if DEBUG_MISS_WTI |
---|
1580 | if( m_debug_activated ) |
---|
1581 | std::cout << " <IOB MISS_WTI_RSP_WTI> Response to WTI write" << std::endl; |
---|
1582 | #endif |
---|
1583 | r_miss_wti_rsp_fsm = MISS_WTI_RSP_IDLE; |
---|
1584 | break; |
---|
1585 | } |
---|
1586 | /////////////////////// |
---|
1587 | case MISS_WTI_RSP_MISS: // Handling response to a TLB MISS transaction |
---|
1588 | { |
---|
1589 | if ( p_vci_ini_int.rspval.read() ) |
---|
1590 | { |
---|
1591 | if ( (p_vci_ini_int.rerror.read()&0x1) != 0 ) // error reported |
---|
1592 | { |
---|
1593 | r_miss_wti_rsp_error = true; |
---|
1594 | if ( p_vci_ini_int.reop.read() ) |
---|
1595 | { |
---|
1596 | r_miss_wti_cmd_fsm = MISS_WTI_RSP_IDLE; |
---|
1597 | r_tlb_miss_req = false; |
---|
1598 | } |
---|
1599 | #if DEBUG_MISS_WTI |
---|
1600 | if( m_debug_activated ) |
---|
1601 | std::cout << " <IOB MISS_WTI_RSP_MISS> ERROR " << std::endl; |
---|
1602 | #endif |
---|
1603 | } |
---|
1604 | else // no error |
---|
1605 | { |
---|
1606 | bool eop = p_vci_ini_int.reop.read(); |
---|
1607 | |
---|
1608 | #if DEBUG_MISS_WTI |
---|
1609 | if( m_debug_activated ) |
---|
1610 | std::cout << " <IOB MISS_WTI_RSP_MISS> Response to a tlb miss transaction" |
---|
1611 | << " / Count = " << r_miss_wti_rsp_count.read() |
---|
1612 | << " / Data = " << std::hex << p_vci_ini_int.rdata.read() << std::endl; |
---|
1613 | #endif |
---|
1614 | assert(((eop == (r_miss_wti_rsp_count.read() == (m_words-1)))) and |
---|
1615 | "VCI_IO_BRIDGE ERROR: invalid length for a TLB MISS response"); |
---|
1616 | |
---|
1617 | r_tlb_buf_data[r_miss_wti_rsp_count.read()] = p_vci_ini_int.rdata.read(); |
---|
1618 | r_miss_wti_rsp_count = r_miss_wti_rsp_count.read() + 1; |
---|
1619 | |
---|
1620 | if ( eop ) |
---|
1621 | { |
---|
1622 | r_tlb_miss_req = false; //reset the request flip-flop |
---|
1623 | r_miss_wti_cmd_fsm = MISS_WTI_RSP_IDLE; |
---|
1624 | } |
---|
1625 | } |
---|
1626 | } |
---|
1627 | break; |
---|
1628 | } |
---|
1629 | } // end switch r_miss_wti_rsp_fsm |
---|
1630 | |
---|
1631 | ///////////////////////////////////////////////////////////////////////// |
---|
1632 | // This flip-flop allocates the access to the CONFIG_RSP fifo |
---|
1633 | // with a round robin priority between 2 clients FSMs : |
---|
1634 | // - CONFIG_CMD : to put a response to a local config command. |
---|
1635 | // - CONFIG_RSP : to put a response to a peripheral config command. |
---|
1636 | // The ressource is always allocated. |
---|
1637 | // A new allocation occurs when the owner FSM is not using it, |
---|
1638 | // and the other FSM is requiring it. |
---|
1639 | ///////////////////////////////////////////////////////////////////////// |
---|
1640 | |
---|
1641 | if ( r_alloc_fifo_config_rsp_local.read() ) |
---|
1642 | { |
---|
1643 | if ( (r_config_rsp_fsm.read() == CONFIG_RSP_FIFO_PUT) and |
---|
1644 | (r_config_cmd_fsm.read() != CONFIG_CMD_FIFO_PUT_RSP) ) |
---|
1645 | r_alloc_fifo_config_rsp_local = false; |
---|
1646 | } |
---|
1647 | else |
---|
1648 | { |
---|
1649 | if ( (r_config_cmd_fsm.read() == CONFIG_CMD_FIFO_PUT_RSP) and |
---|
1650 | (r_config_rsp_fsm.read() != CONFIG_RSP_FIFO_PUT) ) |
---|
1651 | r_alloc_fifo_config_rsp_local = true; |
---|
1652 | } |
---|
1653 | |
---|
1654 | ///////////////////////////////////////////////////////////////////////// |
---|
1655 | // This flip-flop allocates the access to the DMA_RSP fifo |
---|
1656 | // with a round robin priority between 2 clients FSMs : |
---|
1657 | // - DMA_CMD : to put a error response in case of bad address translation |
---|
1658 | // - DMA_RSP : to put a normal response to a DMA transaction. |
---|
1659 | // The ressource is always allocated. |
---|
1660 | // A new allocation occurs when the owner FSM is not using it, |
---|
1661 | // and the other FSM is requiring it. |
---|
1662 | ///////////////////////////////////////////////////////////////////////// |
---|
1663 | |
---|
1664 | if ( r_alloc_fifo_dma_rsp_local.read() ) |
---|
1665 | { |
---|
1666 | if ( (r_dma_rsp_fsm.read() == DMA_RSP_FIFO_PUT) and |
---|
1667 | (r_dma_cmd_fsm.read() != DMA_CMD_FIFO_PUT_RSP) ) |
---|
1668 | r_alloc_fifo_dma_rsp_local = false; |
---|
1669 | } |
---|
1670 | else |
---|
1671 | { |
---|
1672 | if ( (r_dma_cmd_fsm.read() == DMA_CMD_FIFO_PUT_RSP) and |
---|
1673 | (r_dma_rsp_fsm.read() != DMA_RSP_FIFO_PUT) ) |
---|
1674 | r_alloc_fifo_dma_rsp_local = true; |
---|
1675 | } |
---|
1676 | |
---|
1677 | // Define GET signals for all output FIFOs |
---|
1678 | dma_cmd_fifo_get = p_vci_ini_ram.cmdack.read(); |
---|
1679 | dma_rsp_fifo_get = p_vci_tgt_iox.rspack.read(); |
---|
1680 | config_cmd_fifo_get = p_vci_ini_iox.cmdack.read(); |
---|
1681 | config_rsp_fifo_get = p_vci_tgt_int.rspack.read(); |
---|
1682 | |
---|
1683 | /////////////////////////////////////////////////////////// |
---|
1684 | // DMA_CMD fifo update |
---|
1685 | // One writer : DMA_CMD FSM |
---|
1686 | /////////////////////////////////////////////////////////// |
---|
1687 | |
---|
1688 | m_dma_cmd_addr_fifo.update( dma_cmd_fifo_get, |
---|
1689 | dma_cmd_fifo_put, |
---|
1690 | r_dma_cmd_paddr.read() ); // address translation |
---|
1691 | m_dma_cmd_cmd_fifo.update( dma_cmd_fifo_get, |
---|
1692 | dma_cmd_fifo_put, |
---|
1693 | p_vci_tgt_iox.cmd.read() ); |
---|
1694 | m_dma_cmd_contig_fifo.update( dma_cmd_fifo_get, |
---|
1695 | dma_cmd_fifo_put, |
---|
1696 | p_vci_tgt_iox.contig.read() ); |
---|
1697 | m_dma_cmd_cons_fifo.update( dma_cmd_fifo_get, |
---|
1698 | dma_cmd_fifo_put, |
---|
1699 | p_vci_tgt_iox.cons.read() ); |
---|
1700 | m_dma_cmd_plen_fifo.update( dma_cmd_fifo_get, |
---|
1701 | dma_cmd_fifo_put, |
---|
1702 | p_vci_tgt_iox.plen.read() ); |
---|
1703 | m_dma_cmd_wrap_fifo.update( dma_cmd_fifo_get, |
---|
1704 | dma_cmd_fifo_put, |
---|
1705 | p_vci_tgt_iox.wrap.read() ); |
---|
1706 | m_dma_cmd_cfixed_fifo.update( dma_cmd_fifo_get, |
---|
1707 | dma_cmd_fifo_put, |
---|
1708 | p_vci_tgt_iox.cfixed.read() ); |
---|
1709 | m_dma_cmd_clen_fifo.update( dma_cmd_fifo_get, |
---|
1710 | dma_cmd_fifo_put, |
---|
1711 | p_vci_tgt_iox.clen.read() ); |
---|
1712 | m_dma_cmd_srcid_fifo.update( dma_cmd_fifo_get, |
---|
1713 | dma_cmd_fifo_put, |
---|
1714 | p_vci_tgt_iox.srcid.read() ); |
---|
1715 | m_dma_cmd_trdid_fifo.update( dma_cmd_fifo_get, |
---|
1716 | dma_cmd_fifo_put, |
---|
1717 | p_vci_tgt_iox.trdid.read() ); |
---|
1718 | m_dma_cmd_pktid_fifo.update( dma_cmd_fifo_get, |
---|
1719 | dma_cmd_fifo_put, |
---|
1720 | p_vci_tgt_iox.pktid.read() ); |
---|
1721 | m_dma_cmd_data_fifo.update( dma_cmd_fifo_get, |
---|
1722 | dma_cmd_fifo_put, |
---|
1723 | p_vci_tgt_iox.wdata.read() ); |
---|
1724 | m_dma_cmd_be_fifo.update( dma_cmd_fifo_get, |
---|
1725 | dma_cmd_fifo_put, |
---|
1726 | p_vci_tgt_iox.be.read() ); |
---|
1727 | m_dma_cmd_eop_fifo.update( dma_cmd_fifo_get, |
---|
1728 | dma_cmd_fifo_put, |
---|
1729 | p_vci_tgt_iox.eop.read() ); |
---|
1730 | |
---|
1731 | ////////////////////////////////////////////////////////////// |
---|
1732 | // DMA_RSP fifo update |
---|
1733 | // Two writers : DMA_CMD FSM & DMA_RSP FSM |
---|
1734 | ////////////////////////////////////////////////////////////// |
---|
1735 | |
---|
1736 | if (r_alloc_fifo_dma_rsp_local.read() ) // owner is DMA_CMD FSM |
---|
1737 | // local response for a translation error |
---|
1738 | { |
---|
1739 | m_dma_rsp_data_fifo.update( dma_rsp_fifo_get, |
---|
1740 | dma_rsp_fifo_put, |
---|
1741 | 0 ); // no data if error |
---|
1742 | m_dma_rsp_rsrcid_fifo.update( dma_rsp_fifo_get, |
---|
1743 | dma_rsp_fifo_put, |
---|
1744 | p_vci_tgt_iox.rsrcid.read() ); |
---|
1745 | m_dma_rsp_rtrdid_fifo.update( dma_rsp_fifo_get, |
---|
1746 | dma_rsp_fifo_put, |
---|
1747 | p_vci_tgt_iox.rtrdid.read() ); |
---|
1748 | m_dma_rsp_rpktid_fifo.update( dma_rsp_fifo_get, |
---|
1749 | dma_rsp_fifo_put, |
---|
1750 | p_vci_tgt_iox.rpktid.read() ); |
---|
1751 | m_dma_rsp_reop_fifo.update( dma_rsp_fifo_get, |
---|
1752 | dma_rsp_fifo_put, |
---|
1753 | true ); // single flit response |
---|
1754 | m_dma_rsp_rerror_fifo.update( dma_rsp_fifo_get, |
---|
1755 | dma_rsp_fifo_put, |
---|
1756 | 1 ); // error |
---|
1757 | } |
---|
1758 | else // owner is DMA_RSP FSM |
---|
1759 | // normal response to a DMA transaction |
---|
1760 | { |
---|
1761 | m_dma_rsp_data_fifo.update( dma_rsp_fifo_get, |
---|
1762 | dma_rsp_fifo_put, |
---|
1763 | p_vci_ini_ram.rdata.read() ); |
---|
1764 | m_dma_rsp_rsrcid_fifo.update( dma_rsp_fifo_get, |
---|
1765 | dma_rsp_fifo_put, |
---|
1766 | p_vci_ini_ram.rsrcid.read() ); |
---|
1767 | m_dma_rsp_rtrdid_fifo.update( dma_rsp_fifo_get, |
---|
1768 | dma_rsp_fifo_put, |
---|
1769 | p_vci_ini_ram.rtrdid.read() ); |
---|
1770 | m_dma_rsp_rpktid_fifo.update( dma_rsp_fifo_get, |
---|
1771 | dma_rsp_fifo_put, |
---|
1772 | p_vci_ini_ram.rpktid.read() ); |
---|
1773 | m_dma_rsp_reop_fifo.update( dma_rsp_fifo_get, |
---|
1774 | dma_rsp_fifo_put, |
---|
1775 | p_vci_ini_ram.reop.read() ); |
---|
1776 | m_dma_rsp_rerror_fifo.update( dma_rsp_fifo_get, |
---|
1777 | dma_rsp_fifo_put, |
---|
1778 | p_vci_ini_ram.rerror.read() ); |
---|
1779 | } |
---|
1780 | |
---|
1781 | //////////////////////////////////////////////////////////////// |
---|
1782 | // CONFIG_CMD fifo update |
---|
1783 | // One writer : CONFIG_CMD FSM |
---|
1784 | //////////////////////////////////////////////////////////////// |
---|
1785 | |
---|
1786 | m_config_cmd_addr_fifo.update( config_cmd_fifo_get, |
---|
1787 | config_cmd_fifo_put, |
---|
1788 | p_vci_tgt_int.address.read() ); |
---|
1789 | m_config_cmd_cmd_fifo.update( config_cmd_fifo_get, |
---|
1790 | config_cmd_fifo_put, |
---|
1791 | p_vci_tgt_int.cmd.read() ); |
---|
1792 | m_config_cmd_contig_fifo.update( config_cmd_fifo_get, |
---|
1793 | config_cmd_fifo_put, |
---|
1794 | p_vci_tgt_int.contig.read() ); |
---|
1795 | m_config_cmd_cons_fifo.update( config_cmd_fifo_get, |
---|
1796 | config_cmd_fifo_put, |
---|
1797 | p_vci_tgt_int.cons.read() ); |
---|
1798 | m_config_cmd_plen_fifo.update( config_cmd_fifo_get, |
---|
1799 | config_cmd_fifo_put, |
---|
1800 | p_vci_tgt_int.plen.read() ); |
---|
1801 | m_config_cmd_wrap_fifo.update( config_cmd_fifo_get, |
---|
1802 | config_cmd_fifo_put, |
---|
1803 | p_vci_tgt_int.wrap.read() ); |
---|
1804 | m_config_cmd_cfixed_fifo.update( config_cmd_fifo_get, |
---|
1805 | config_cmd_fifo_put, |
---|
1806 | p_vci_tgt_int.cfixed.read() ); |
---|
1807 | m_config_cmd_clen_fifo.update( config_cmd_fifo_get, |
---|
1808 | config_cmd_fifo_put, |
---|
1809 | p_vci_tgt_int.clen.read() ); |
---|
1810 | m_config_cmd_srcid_fifo.update( config_cmd_fifo_get, |
---|
1811 | config_cmd_fifo_put, |
---|
1812 | p_vci_tgt_int.srcid.read() ); |
---|
1813 | m_config_cmd_trdid_fifo.update( config_cmd_fifo_get, |
---|
1814 | config_cmd_fifo_put, |
---|
1815 | p_vci_tgt_int.trdid.read() ); |
---|
1816 | m_config_cmd_pktid_fifo.update( config_cmd_fifo_get, |
---|
1817 | config_cmd_fifo_put, |
---|
1818 | p_vci_tgt_int.pktid.read() ); |
---|
1819 | m_config_cmd_data_fifo.update( config_cmd_fifo_get, |
---|
1820 | config_cmd_fifo_put, |
---|
1821 | (ext_data_t)p_vci_tgt_int.wdata.read() ); |
---|
1822 | m_config_cmd_be_fifo.update( config_cmd_fifo_get, |
---|
1823 | config_cmd_fifo_put, |
---|
1824 | p_vci_tgt_int.be.read() ); |
---|
1825 | m_config_cmd_eop_fifo.update( config_cmd_fifo_get, |
---|
1826 | config_cmd_fifo_put, |
---|
1827 | p_vci_tgt_int.eop.read() ); |
---|
1828 | |
---|
1829 | ////////////////////////////////////////////////////////////////////////// |
---|
1830 | // CONFIG_RSP fifo update |
---|
1831 | // There is two writers : CONFIG_CMD FSM & CONFIG_RSP FSM |
---|
1832 | ////////////////////////////////////////////////////////////////////////// |
---|
1833 | |
---|
1834 | if ( r_alloc_fifo_config_rsp_local.read() ) // owner is CONFIG_CMD FSM |
---|
1835 | // response for a local config transaction |
---|
1836 | { |
---|
1837 | m_config_rsp_data_fifo.update( config_rsp_fifo_get, |
---|
1838 | config_rsp_fifo_put, |
---|
1839 | (int_data_t)r_config_cmd_rdata.read() ); |
---|
1840 | m_config_rsp_rsrcid_fifo.update( config_rsp_fifo_get, |
---|
1841 | config_rsp_fifo_put, |
---|
1842 | p_vci_tgt_int.srcid.read() ); |
---|
1843 | m_config_rsp_rtrdid_fifo.update( config_rsp_fifo_get, |
---|
1844 | config_rsp_fifo_put, |
---|
1845 | p_vci_tgt_int.trdid.read() ); |
---|
1846 | m_config_rsp_rpktid_fifo.update( config_rsp_fifo_get, |
---|
1847 | config_rsp_fifo_put, |
---|
1848 | p_vci_tgt_int.pktid.read() ); |
---|
1849 | m_config_rsp_reop_fifo.update( config_rsp_fifo_get, |
---|
1850 | config_rsp_fifo_put, |
---|
1851 | true ); // local config are one flit |
---|
1852 | m_config_rsp_rerror_fifo.update( config_rsp_fifo_get, |
---|
1853 | config_rsp_fifo_put, |
---|
1854 | r_config_cmd_error.read() ); |
---|
1855 | } |
---|
1856 | else // owner is CONFIG_RSP FSM |
---|
1857 | // response for a remote transaction |
---|
1858 | { |
---|
1859 | m_config_rsp_data_fifo.update( config_rsp_fifo_get, |
---|
1860 | config_rsp_fifo_put, |
---|
1861 | (int_data_t)p_vci_ini_iox.rdata.read() ); |
---|
1862 | m_config_rsp_rsrcid_fifo.update( config_rsp_fifo_get, |
---|
1863 | config_rsp_fifo_put, |
---|
1864 | p_vci_ini_iox.rsrcid.read() ); |
---|
1865 | m_config_rsp_rtrdid_fifo.update( config_rsp_fifo_get, |
---|
1866 | config_rsp_fifo_put, |
---|
1867 | p_vci_ini_iox.rtrdid.read() ); |
---|
1868 | m_config_rsp_rpktid_fifo.update( config_rsp_fifo_get, |
---|
1869 | config_rsp_fifo_put, |
---|
1870 | p_vci_ini_iox.rpktid.read() ); |
---|
1871 | m_config_rsp_reop_fifo.update( config_rsp_fifo_get, |
---|
1872 | config_rsp_fifo_put, |
---|
1873 | p_vci_ini_iox.reop.read() ); |
---|
1874 | m_config_rsp_rerror_fifo.update( config_rsp_fifo_get, |
---|
1875 | config_rsp_fifo_put, |
---|
1876 | p_vci_ini_iox.rerror.read() ); |
---|
1877 | } |
---|
1878 | |
---|
1879 | } // end transition() |
---|
1880 | |
---|
1881 | /////////////////////// |
---|
1882 | tmpl(void)::genMoore() |
---|
1883 | /////////////////////// |
---|
1884 | { |
---|
1885 | // VCI initiator command on RAM network |
---|
1886 | // directly the content of the dma_cmd FIFO |
---|
1887 | |
---|
1888 | p_vci_ini_ram.cmdval = m_dma_cmd_addr_fifo.rok(); |
---|
1889 | p_vci_ini_ram.address = m_dma_cmd_addr_fifo.read(); |
---|
1890 | p_vci_ini_ram.be = m_dma_cmd_be_fifo.read(); |
---|
1891 | p_vci_ini_ram.cmd = m_dma_cmd_cmd_fifo.read(); |
---|
1892 | p_vci_ini_ram.contig = m_dma_cmd_contig_fifo.read(); |
---|
1893 | p_vci_ini_ram.wdata = m_dma_cmd_data_fifo.read(); |
---|
1894 | p_vci_ini_ram.eop = m_dma_cmd_eop_fifo.read(); |
---|
1895 | p_vci_ini_ram.cons = m_dma_cmd_cons_fifo.read(); |
---|
1896 | p_vci_ini_ram.plen = m_dma_cmd_plen_fifo.read(); |
---|
1897 | p_vci_ini_ram.wrap = m_dma_cmd_wrap_fifo.read(); |
---|
1898 | p_vci_ini_ram.cfixed = m_dma_cmd_cfixed_fifo.read(); |
---|
1899 | p_vci_ini_ram.clen = m_dma_cmd_clen_fifo.read(); |
---|
1900 | p_vci_ini_ram.trdid = m_dma_cmd_trdid_fifo.read(); |
---|
1901 | p_vci_ini_ram.pktid = m_dma_cmd_pktid_fifo.read(); |
---|
1902 | p_vci_ini_ram.srcid = m_dma_cmd_srcid_fifo.read(); |
---|
1903 | |
---|
1904 | // VCI target command ack on IOX network |
---|
1905 | // depends on the DMA_CMD FSM state |
---|
1906 | |
---|
1907 | switch ( r_dma_cmd_fsm.read() ) |
---|
1908 | { |
---|
1909 | case DMA_CMD_IDLE: |
---|
1910 | case DMA_CMD_MISS_WAIT: |
---|
1911 | p_vci_tgt_iox.cmdack = false; |
---|
1912 | break; |
---|
1913 | case DMA_CMD_WAIT_EOP: |
---|
1914 | p_vci_tgt_iox.cmdack = true; |
---|
1915 | break; |
---|
1916 | case DMA_CMD_FIFO_PUT_CMD: |
---|
1917 | p_vci_tgt_iox.cmdack = m_dma_cmd_addr_fifo.wok(); |
---|
1918 | break; |
---|
1919 | case DMA_CMD_FIFO_PUT_RSP: |
---|
1920 | p_vci_tgt_iox.cmdack = m_dma_rsp_data_fifo.wok(); |
---|
1921 | break; |
---|
1922 | }// end switch r_dma_cmd_fsm |
---|
1923 | |
---|
1924 | // VCI target response on IOX network |
---|
1925 | // directly the content of the DMA_RSP FIFO |
---|
1926 | |
---|
1927 | p_vci_tgt_iox.rspval = m_dma_rsp_data_fifo.rok(); |
---|
1928 | p_vci_tgt_iox.rsrcid = m_dma_rsp_rsrcid_fifo.read(); |
---|
1929 | p_vci_tgt_iox.rtrdid = m_dma_rsp_rtrdid_fifo.read(); |
---|
1930 | p_vci_tgt_iox.rpktid = m_dma_rsp_rpktid_fifo.read(); |
---|
1931 | p_vci_tgt_iox.rdata = m_dma_rsp_data_fifo.read(); |
---|
1932 | p_vci_tgt_iox.rerror = m_dma_rsp_rerror_fifo.read(); |
---|
1933 | p_vci_tgt_iox.reop = m_dma_rsp_reop_fifo.read(); |
---|
1934 | |
---|
1935 | // VCI initiator response on the RAM Network |
---|
1936 | // depends on the DMA_RSP FSM state |
---|
1937 | |
---|
1938 | p_vci_ini_ram.rspack = m_dma_rsp_data_fifo.wok() and |
---|
1939 | (r_dma_rsp_fsm.read() == DMA_RSP_FIFO_PUT) and |
---|
1940 | not r_alloc_fifo_dma_rsp_local.read(); |
---|
1941 | |
---|
1942 | // VCI initiator command on IOX network |
---|
1943 | // directly the content of the CONFIG_CMD FIFO |
---|
1944 | |
---|
1945 | p_vci_ini_iox.cmdval = m_config_cmd_addr_fifo.rok(); |
---|
1946 | p_vci_ini_iox.address = m_config_cmd_addr_fifo.read(); |
---|
1947 | p_vci_ini_iox.be = m_config_cmd_be_fifo.read(); |
---|
1948 | p_vci_ini_iox.cmd = m_config_cmd_cmd_fifo.read(); |
---|
1949 | p_vci_ini_iox.contig = m_config_cmd_contig_fifo.read(); |
---|
1950 | p_vci_ini_iox.wdata = (ext_data_t)m_config_cmd_data_fifo.read(); |
---|
1951 | p_vci_ini_iox.eop = m_config_cmd_eop_fifo.read(); |
---|
1952 | p_vci_ini_iox.cons = m_config_cmd_cons_fifo.read(); |
---|
1953 | p_vci_ini_iox.plen = m_config_cmd_plen_fifo.read(); |
---|
1954 | p_vci_ini_iox.wrap = m_config_cmd_wrap_fifo.read(); |
---|
1955 | p_vci_ini_iox.cfixed = m_config_cmd_cfixed_fifo.read(); |
---|
1956 | p_vci_ini_iox.clen = m_config_cmd_clen_fifo.read(); |
---|
1957 | p_vci_ini_iox.trdid = m_config_cmd_trdid_fifo.read(); |
---|
1958 | p_vci_ini_iox.pktid = m_config_cmd_pktid_fifo.read(); |
---|
1959 | p_vci_ini_iox.srcid = m_config_cmd_srcid_fifo.read(); |
---|
1960 | |
---|
1961 | // VCI target command ack on INT network |
---|
1962 | // it depends on the CONFIG_CMD FSM state |
---|
1963 | |
---|
1964 | switch ( r_config_cmd_fsm.read() ) |
---|
1965 | { |
---|
1966 | case CONFIG_CMD_IDLE: |
---|
1967 | p_vci_tgt_int.cmdack = false; |
---|
1968 | break; |
---|
1969 | case CONFIG_CMD_FIFO_PUT_CMD: |
---|
1970 | p_vci_tgt_int.cmdack = m_config_cmd_addr_fifo.wok(); |
---|
1971 | break; |
---|
1972 | case CONFIG_CMD_FIFO_PUT_RSP: |
---|
1973 | p_vci_tgt_int.cmdack = m_config_rsp_data_fifo.wok() and |
---|
1974 | r_alloc_fifo_config_rsp_local.read(); |
---|
1975 | break; |
---|
1976 | }// end switch r_config_cmd_fsm |
---|
1977 | |
---|
1978 | // VCI target response on INT network |
---|
1979 | // directly the content of the CONFIG_RSP FIFO |
---|
1980 | |
---|
1981 | p_vci_tgt_int.rspval = m_config_rsp_data_fifo.rok(); |
---|
1982 | p_vci_tgt_int.rsrcid = m_config_rsp_rsrcid_fifo.read(); |
---|
1983 | p_vci_tgt_int.rtrdid = m_config_rsp_rtrdid_fifo.read(); |
---|
1984 | p_vci_tgt_int.rpktid = m_config_rsp_rpktid_fifo.read(); |
---|
1985 | p_vci_tgt_int.rdata = m_config_rsp_data_fifo.read(); |
---|
1986 | p_vci_tgt_int.rerror = m_config_rsp_rerror_fifo.read(); |
---|
1987 | p_vci_tgt_int.reop = m_config_rsp_reop_fifo.read(); |
---|
1988 | |
---|
1989 | // VCI initiator response on IOX Network |
---|
1990 | // it depends on the CONFIG_RSP FSM state |
---|
1991 | |
---|
1992 | p_vci_ini_iox.rspack = m_config_rsp_data_fifo.wok() and |
---|
1993 | (r_config_rsp_fsm.read() == CONFIG_RSP_FIFO_PUT) and |
---|
1994 | not r_alloc_fifo_config_rsp_local.read(); |
---|
1995 | |
---|
1996 | // VCI initiator command on INT network |
---|
1997 | // it depends on the MISS_WTI_CMD FSM state |
---|
1998 | // - WTI : single flit WRITE |
---|
1999 | // - MISS TLB : multi-flit READ for a complete cache line |
---|
2000 | |
---|
2001 | // default values |
---|
2002 | p_vci_ini_int.srcid = m_int_srcid; |
---|
2003 | p_vci_ini_int.trdid = 0; |
---|
2004 | p_vci_ini_int.cfixed = false; |
---|
2005 | p_vci_ini_int.eop = true; |
---|
2006 | p_vci_ini_int.wrap = false; |
---|
2007 | p_vci_ini_int.clen = 0; |
---|
2008 | p_vci_ini_int.contig = true; |
---|
2009 | p_vci_ini_int.cons = false; |
---|
2010 | p_vci_ini_int.be = 0xF; |
---|
2011 | |
---|
2012 | switch ( r_miss_wti_cmd_fsm.read() ) |
---|
2013 | { |
---|
2014 | case MISS_WTI_CMD_IDLE: |
---|
2015 | p_vci_ini_int.cmdval = false; |
---|
2016 | p_vci_ini_int.address = 0; |
---|
2017 | p_vci_ini_int.cmd = vci_param_int::CMD_NOP; |
---|
2018 | p_vci_ini_int.pktid = PKTID_READ; |
---|
2019 | p_vci_ini_int.wdata = 0; |
---|
2020 | p_vci_ini_int.plen = 0; |
---|
2021 | break; |
---|
2022 | |
---|
2023 | case MISS_WTI_CMD_WTI: |
---|
2024 | p_vci_ini_int.cmdval = true; |
---|
2025 | p_vci_ini_int.address = r_iommu_peri_wti[r_miss_wti_cmd_index.read()].read(); |
---|
2026 | p_vci_ini_int.cmd = vci_param_int::CMD_WRITE; |
---|
2027 | p_vci_ini_int.pktid = PKTID_WRITE; |
---|
2028 | p_vci_ini_int.wdata = (int_data_t)r_irq_pending[r_miss_wti_cmd_index.read()].read(); |
---|
2029 | p_vci_ini_int.plen = vci_param_int::B; |
---|
2030 | break; |
---|
2031 | |
---|
2032 | case MISS_WTI_CMD_MISS: |
---|
2033 | p_vci_ini_int.cmdval = true; |
---|
2034 | p_vci_ini_int.address = r_tlb_paddr.read() & CACHE_LINE_MASK; |
---|
2035 | p_vci_ini_int.cmd = vci_param_int::CMD_READ; |
---|
2036 | p_vci_ini_int.pktid = PKTID_READ; |
---|
2037 | p_vci_ini_int.wdata = 0; |
---|
2038 | p_vci_ini_int.plen = m_words*(vci_param_int::B); |
---|
2039 | break; |
---|
2040 | } |
---|
2041 | |
---|
2042 | // VCI initiator response on INT network |
---|
2043 | // It depends on the MISS_WTI_RSP FSM state |
---|
2044 | |
---|
2045 | if ( r_miss_wti_rsp_fsm.read() == MISS_WTI_RSP_IDLE ) p_vci_ini_int.rspack = false; |
---|
2046 | else p_vci_ini_int.rspack = true; |
---|
2047 | |
---|
2048 | } // end genMoore |
---|
2049 | |
---|
2050 | }} |
---|
2051 | |
---|
2052 | // Local Variables: |
---|
2053 | // tab-width: 4 |
---|
2054 | // c-basic-offset: 4 |
---|
2055 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
---|
2056 | // indent-tabs-mode: nil |
---|
2057 | // End: |
---|
2058 | |
---|
2059 | // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
---|