1 /*
2 * Copyright (c) 2007-2015 Solarflare Communications Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
21 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
23 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
24 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * The views and conclusions contained in the software and documentation are
27 * those of the authors and should not be interpreted as representing official
28 * policies, either expressed or implied, of the FreeBSD Project.
29 */
30
31 #include "efx.h"
32 #include "efx_impl.h"
33
34 __checkReturn efx_rc_t
35 efx_sram_buf_tbl_set(
36 __in efx_nic_t *enp,
37 __in uint32_t id,
38 __in efsys_mem_t *esmp,
39 __in size_t n)
40 {
41 efx_qword_t qword;
42 uint32_t start = id;
43 uint32_t stop = start + n;
44 efsys_dma_addr_t addr;
45 efx_oword_t oword;
46 unsigned int count;
47 efx_rc_t rc;
48
49 EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
50 EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
51
52 #if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD
53 if (enp->en_family == EFX_FAMILY_HUNTINGTON ||
54 enp->en_family == EFX_FAMILY_MEDFORD) {
55 /*
56 * FIXME: the efx_sram_buf_tbl_*() functionality needs to be
57 * pulled inside the Falcon/Siena queue create/destroy code,
58 * and then the original functions can be removed (see bug30834
59 * comment #1). But, for now, we just ensure that they are
60 * no-ops for EF10, to allow bringing up existing drivers
61 * without modification.
62 */
63
64 return (0);
65 }
66 #endif /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD */
67
68 if (stop >= EFX_BUF_TBL_SIZE) {
69 rc = EFBIG;
70 goto fail1;
71 }
72
73 /* Add the entries into the buffer table */
74 addr = EFSYS_MEM_ADDR(esmp);
75 for (id = start; id != stop; id++) {
76 EFX_POPULATE_QWORD_5(qword,
77 FRF_AZ_IP_DAT_BUF_SIZE, 0, FRF_AZ_BUF_ADR_REGION, 0,
78 FRF_AZ_BUF_ADR_FBUF_DW0,
79 (uint32_t)((addr >> 12) & 0xffffffff),
80 FRF_AZ_BUF_ADR_FBUF_DW1,
81 (uint32_t)((addr >> 12) >> 32),
82 FRF_AZ_BUF_OWNER_ID_FBUF, 0);
83
84 EFX_BAR_TBL_WRITEQ(enp, FR_AZ_BUF_FULL_TBL,
85 id, &qword);
86
87 addr += EFX_BUF_SIZE;
88 }
89
90 EFSYS_PROBE2(buf, uint32_t, start, uint32_t, stop - 1);
91
92 /* Flush the write buffer */
93 EFX_POPULATE_OWORD_2(oword, FRF_AZ_BUF_UPD_CMD, 1,
94 FRF_AZ_BUF_CLR_CMD, 0);
95 EFX_BAR_WRITEO(enp, FR_AZ_BUF_TBL_UPD_REG, &oword);
96
97 /* Poll for the last entry being written to the buffer table */
98 EFSYS_ASSERT3U(id, ==, stop);
99 addr -= EFX_BUF_SIZE;
100
101 count = 0;
102 do {
103 EFSYS_PROBE1(wait, unsigned int, count);
104
105 /* Spin for 1 ms */
106 EFSYS_SPIN(1000);
107
108 EFX_BAR_TBL_READQ(enp, FR_AZ_BUF_FULL_TBL,
109 id - 1, &qword);
110
111 if (EFX_QWORD_FIELD(qword, FRF_AZ_BUF_ADR_FBUF_DW0) ==
112 (uint32_t)((addr >> 12) & 0xffffffff) &&
113 EFX_QWORD_FIELD(qword, FRF_AZ_BUF_ADR_FBUF_DW1) ==
114 (uint32_t)((addr >> 12) >> 32))
115 goto verify;
116
117 } while (++count < 100);
118
119 rc = ETIMEDOUT;
120 goto fail2;
121
122 verify:
123 /* Verify the rest of the entries in the buffer table */
124 while (--id != start) {
125 addr -= EFX_BUF_SIZE;
126
127 /* Read the buffer table entry */
128 EFX_BAR_TBL_READQ(enp, FR_AZ_BUF_FULL_TBL,
129 id - 1, &qword);
130
131 if (EFX_QWORD_FIELD(qword, FRF_AZ_BUF_ADR_FBUF_DW0) !=
132 (uint32_t)((addr >> 12) & 0xffffffff) ||
133 EFX_QWORD_FIELD(qword, FRF_AZ_BUF_ADR_FBUF_DW1) !=
134 (uint32_t)((addr >> 12) >> 32)) {
135 rc = EFAULT;
136 goto fail3;
137 }
138 }
139
140 return (0);
141
142 fail3:
143 EFSYS_PROBE(fail3);
144
145 id = stop;
146
147 fail2:
148 EFSYS_PROBE(fail2);
149
150 EFX_POPULATE_OWORD_4(oword, FRF_AZ_BUF_UPD_CMD, 0,
151 FRF_AZ_BUF_CLR_CMD, 1, FRF_AZ_BUF_CLR_END_ID, id - 1,
152 FRF_AZ_BUF_CLR_START_ID, start);
153 EFX_BAR_WRITEO(enp, FR_AZ_BUF_TBL_UPD_REG, &oword);
154
155 fail1:
156 EFSYS_PROBE1(fail1, efx_rc_t, rc);
157
158 return (rc);
159 }
160
161 void
162 efx_sram_buf_tbl_clear(
163 __in efx_nic_t *enp,
164 __in uint32_t id,
165 __in size_t n)
166 {
167 efx_oword_t oword;
168 uint32_t start = id;
169 uint32_t stop = start + n;
170
171 EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
172 EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
173
174 #if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD
175 if (enp->en_family == EFX_FAMILY_HUNTINGTON ||
176 enp->en_family == EFX_FAMILY_MEDFORD) {
177 /*
178 * FIXME: the efx_sram_buf_tbl_*() functionality needs to be
179 * pulled inside the Falcon/Siena queue create/destroy code,
180 * and then the original functions can be removed (see bug30834
181 * comment #1). But, for now, we just ensure that they are
182 * no-ops for EF10, to allow bringing up existing drivers
183 * without modification.
184 */
185
186 return;
187 }
188 #endif /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD */
189
190 EFSYS_ASSERT3U(stop, <, EFX_BUF_TBL_SIZE);
191
192 EFSYS_PROBE2(buf, uint32_t, start, uint32_t, stop - 1);
193
194 EFX_POPULATE_OWORD_4(oword, FRF_AZ_BUF_UPD_CMD, 0,
195 FRF_AZ_BUF_CLR_CMD, 1, FRF_AZ_BUF_CLR_END_ID, stop - 1,
196 FRF_AZ_BUF_CLR_START_ID, start);
197 EFX_BAR_WRITEO(enp, FR_AZ_BUF_TBL_UPD_REG, &oword);
198 }
199
200
201 #if EFSYS_OPT_DIAG
202
203 static void
204 efx_sram_byte_increment_set(
205 __in size_t row,
206 __in boolean_t negate,
207 __out efx_qword_t *eqp)
208 {
209 size_t offset = row * FR_AZ_SRM_DBG_REG_STEP;
210 unsigned int index;
211
212 _NOTE(ARGUNUSED(negate))
213
214 for (index = 0; index < sizeof (efx_qword_t); index++)
215 eqp->eq_u8[index] = offset + index;
216 }
217
218 static void
219 efx_sram_all_the_same_set(
220 __in size_t row,
221 __in boolean_t negate,
222 __out efx_qword_t *eqp)
223 {
224 _NOTE(ARGUNUSED(row))
225
226 if (negate)
227 EFX_SET_QWORD(*eqp);
228 else
229 EFX_ZERO_QWORD(*eqp);
230 }
231
232 static void
233 efx_sram_bit_alternate_set(
234 __in size_t row,
235 __in boolean_t negate,
236 __out efx_qword_t *eqp)
237 {
238 _NOTE(ARGUNUSED(row))
239
240 EFX_POPULATE_QWORD_2(*eqp,
241 EFX_DWORD_0, (negate) ? 0x55555555 : 0xaaaaaaaa,
242 EFX_DWORD_1, (negate) ? 0x55555555 : 0xaaaaaaaa);
243 }
244
245 static void
246 efx_sram_byte_alternate_set(
247 __in size_t row,
248 __in boolean_t negate,
249 __out efx_qword_t *eqp)
250 {
251 _NOTE(ARGUNUSED(row))
252
253 EFX_POPULATE_QWORD_2(*eqp,
254 EFX_DWORD_0, (negate) ? 0x00ff00ff : 0xff00ff00,
255 EFX_DWORD_1, (negate) ? 0x00ff00ff : 0xff00ff00);
256 }
257
258 static void
259 efx_sram_byte_changing_set(
260 __in size_t row,
261 __in boolean_t negate,
262 __out efx_qword_t *eqp)
263 {
264 size_t offset = row * FR_AZ_SRM_DBG_REG_STEP;
265 unsigned int index;
266
267 for (index = 0; index < sizeof (efx_qword_t); index++) {
268 uint8_t byte;
269
270 if (offset / 256 == 0)
271 byte = (uint8_t)((offset % 257) % 256);
272 else
273 byte = (uint8_t)(~((offset - 8) % 257) % 256);
274
275 eqp->eq_u8[index] = (negate) ? ~byte : byte;
276 }
277 }
278
279 static void
280 efx_sram_bit_sweep_set(
281 __in size_t row,
282 __in boolean_t negate,
283 __out efx_qword_t *eqp)
284 {
285 size_t offset = row * FR_AZ_SRM_DBG_REG_STEP;
286
287 if (negate) {
288 EFX_SET_QWORD(*eqp);
289 EFX_CLEAR_QWORD_BIT(*eqp, (offset / sizeof (efx_qword_t)) % 64);
290 } else {
291 EFX_ZERO_QWORD(*eqp);
292 EFX_SET_QWORD_BIT(*eqp, (offset / sizeof (efx_qword_t)) % 64);
293 }
294 }
295
296 efx_sram_pattern_fn_t __efx_sram_pattern_fns[] = {
297 efx_sram_byte_increment_set,
298 efx_sram_all_the_same_set,
299 efx_sram_bit_alternate_set,
300 efx_sram_byte_alternate_set,
301 efx_sram_byte_changing_set,
302 efx_sram_bit_sweep_set
303 };
304
305 __checkReturn efx_rc_t
306 efx_sram_test(
307 __in efx_nic_t *enp,
308 __in efx_pattern_type_t type)
309 {
310 efx_sram_pattern_fn_t func;
311
312 EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
313
314 EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
315
316 EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_RX));
317 EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_TX));
318 EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_EV));
319
320 /* SRAM testing is only available on Siena. */
321 if (enp->en_family != EFX_FAMILY_SIENA)
322 return (0);
323
324 /* Select pattern generator */
325 EFSYS_ASSERT3U(type, <, EFX_PATTERN_NTYPES);
326 func = __efx_sram_pattern_fns[type];
327
328 return (siena_sram_test(enp, func));
329 }
330
331 #endif /* EFSYS_OPT_DIAG */