2 * Copyright (c) 2012-2016 Solarflare Communications Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
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.
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
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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,
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23 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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35 #if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD
38 static __checkReturn efx_rc_t
42 __in uint32_t target_evq,
44 __in uint32_t instance,
45 __in efsys_mem_t *esmp,
46 __in boolean_t disable_scatter,
47 __in uint32_t ps_bufsize)
50 uint8_t payload[MAX(MC_CMD_INIT_RXQ_EXT_IN_LEN,
51 MC_CMD_INIT_RXQ_EXT_OUT_LEN)];
52 int npages = EFX_RXQ_NBUFS(size);
54 efx_qword_t *dma_addr;
59 /* If this changes, then the payload size might need to change. */
60 EFSYS_ASSERT3U(MC_CMD_INIT_RXQ_OUT_LEN, ==, 0);
61 EFSYS_ASSERT3U(size, <=, EFX_RXQ_MAXNDESCS);
64 dma_mode = MC_CMD_INIT_RXQ_EXT_IN_PACKED_STREAM;
66 dma_mode = MC_CMD_INIT_RXQ_EXT_IN_SINGLE_PACKET;
68 (void) memset(payload, 0, sizeof (payload));
69 req.emr_cmd = MC_CMD_INIT_RXQ;
70 req.emr_in_buf = payload;
71 req.emr_in_length = MC_CMD_INIT_RXQ_EXT_IN_LEN;
72 req.emr_out_buf = payload;
73 req.emr_out_length = MC_CMD_INIT_RXQ_EXT_OUT_LEN;
75 MCDI_IN_SET_DWORD(req, INIT_RXQ_EXT_IN_SIZE, size);
76 MCDI_IN_SET_DWORD(req, INIT_RXQ_EXT_IN_TARGET_EVQ, target_evq);
77 MCDI_IN_SET_DWORD(req, INIT_RXQ_EXT_IN_LABEL, label);
78 MCDI_IN_SET_DWORD(req, INIT_RXQ_EXT_IN_INSTANCE, instance);
79 MCDI_IN_POPULATE_DWORD_8(req, INIT_RXQ_EXT_IN_FLAGS,
80 INIT_RXQ_EXT_IN_FLAG_BUFF_MODE, 0,
81 INIT_RXQ_EXT_IN_FLAG_HDR_SPLIT, 0,
82 INIT_RXQ_EXT_IN_FLAG_TIMESTAMP, 0,
83 INIT_RXQ_EXT_IN_CRC_MODE, 0,
84 INIT_RXQ_EXT_IN_FLAG_PREFIX, 1,
85 INIT_RXQ_EXT_IN_FLAG_DISABLE_SCATTER, disable_scatter,
86 INIT_RXQ_EXT_IN_DMA_MODE,
88 INIT_RXQ_EXT_IN_PACKED_STREAM_BUFF_SIZE, ps_bufsize);
89 MCDI_IN_SET_DWORD(req, INIT_RXQ_EXT_IN_OWNER_ID, 0);
90 MCDI_IN_SET_DWORD(req, INIT_RXQ_EXT_IN_PORT_ID, EVB_PORT_ID_ASSIGNED);
92 dma_addr = MCDI_IN2(req, efx_qword_t, INIT_RXQ_IN_DMA_ADDR);
93 addr = EFSYS_MEM_ADDR(esmp);
95 for (i = 0; i < npages; i++) {
96 EFX_POPULATE_QWORD_2(*dma_addr,
97 EFX_DWORD_1, (uint32_t)(addr >> 32),
98 EFX_DWORD_0, (uint32_t)(addr & 0xffffffff));
101 addr += EFX_BUF_SIZE;
104 efx_mcdi_execute(enp, &req);
106 if (req.emr_rc != 0) {
114 EFSYS_PROBE1(fail1, efx_rc_t, rc);
119 static __checkReturn efx_rc_t
122 __in uint32_t instance)
125 uint8_t payload[MAX(MC_CMD_FINI_RXQ_IN_LEN,
126 MC_CMD_FINI_RXQ_OUT_LEN)];
129 (void) memset(payload, 0, sizeof (payload));
130 req.emr_cmd = MC_CMD_FINI_RXQ;
131 req.emr_in_buf = payload;
132 req.emr_in_length = MC_CMD_FINI_RXQ_IN_LEN;
133 req.emr_out_buf = payload;
134 req.emr_out_length = MC_CMD_FINI_RXQ_OUT_LEN;
136 MCDI_IN_SET_DWORD(req, FINI_RXQ_IN_INSTANCE, instance);
138 efx_mcdi_execute_quiet(enp, &req);
140 if ((req.emr_rc != 0) && (req.emr_rc != MC_CMD_ERR_EALREADY)) {
148 EFSYS_PROBE1(fail1, efx_rc_t, rc);
154 __checkReturn efx_rc_t
162 #if EFSYS_OPT_RX_SCATTER
163 __checkReturn efx_rc_t
164 ef10_rx_scatter_enable(
166 __in unsigned int buf_size)
168 _NOTE(ARGUNUSED(enp, buf_size))
171 #endif /* EFSYS_OPT_RX_SCATTER */
175 * EF10 RX pseudo-header
176 * ---------------------
178 * Receive packets are prefixed by an (optional) 14 byte pseudo-header:
180 * +00: Toeplitz hash value.
181 * (32bit little-endian)
182 * +04: Outer VLAN tag. Zero if the packet did not have an outer VLAN tag.
184 * +06: Inner VLAN tag. Zero if the packet did not have an inner VLAN tag.
186 * +08: Packet Length. Zero if the RX datapath was in cut-through mode.
187 * (16bit little-endian)
188 * +10: MAC timestamp. Zero if timestamping is not enabled.
189 * (32bit little-endian)
191 * See "The RX Pseudo-header" in SF-109306-TC.
194 __checkReturn efx_rc_t
195 ef10_rx_prefix_pktlen(
197 __in uint8_t *buffer,
198 __out uint16_t *lengthp)
200 _NOTE(ARGUNUSED(enp))
203 * The RX pseudo-header contains the packet length, excluding the
204 * pseudo-header. If the hardware receive datapath was operating in
205 * cut-through mode then the length in the RX pseudo-header will be
206 * zero, and the packet length must be obtained from the DMA length
207 * reported in the RX event.
209 *lengthp = buffer[8] | (buffer[9] << 8);
216 __in_ecount(n) efsys_dma_addr_t *addrp,
219 __in unsigned int completed,
220 __in unsigned int added)
227 /* The client driver must not overfill the queue */
228 EFSYS_ASSERT3U(added - completed + n, <=,
229 EFX_RXQ_LIMIT(erp->er_mask + 1));
231 id = added & (erp->er_mask);
232 for (i = 0; i < n; i++) {
233 EFSYS_PROBE4(rx_post, unsigned int, erp->er_index,
234 unsigned int, id, efsys_dma_addr_t, addrp[i],
237 EFX_POPULATE_QWORD_3(qword,
238 ESF_DZ_RX_KER_BYTE_CNT, (uint32_t)(size),
239 ESF_DZ_RX_KER_BUF_ADDR_DW0,
240 (uint32_t)(addrp[i] & 0xffffffff),
241 ESF_DZ_RX_KER_BUF_ADDR_DW1,
242 (uint32_t)(addrp[i] >> 32));
244 offset = id * sizeof (efx_qword_t);
245 EFSYS_MEM_WRITEQ(erp->er_esmp, offset, &qword);
247 id = (id + 1) & (erp->er_mask);
254 __in unsigned int added,
255 __inout unsigned int *pushedp)
257 efx_nic_t *enp = erp->er_enp;
258 unsigned int pushed = *pushedp;
262 /* Hardware has alignment restriction for WPTR */
263 wptr = P2ALIGN(added, EF10_RX_WPTR_ALIGN);
269 /* Push the populated descriptors out */
270 wptr &= erp->er_mask;
272 EFX_POPULATE_DWORD_1(dword, ERF_DZ_RX_DESC_WPTR, wptr);
274 /* Guarantee ordering of memory (descriptors) and PIO (doorbell) */
275 EFX_DMA_SYNC_QUEUE_FOR_DEVICE(erp->er_esmp, erp->er_mask + 1,
276 wptr, pushed & erp->er_mask);
277 EFSYS_PIO_WRITE_BARRIER();
278 EFX_BAR_TBL_WRITED(enp, ER_DZ_RX_DESC_UPD_REG,
279 erp->er_index, &dword, B_FALSE);
282 __checkReturn efx_rc_t
286 efx_nic_t *enp = erp->er_enp;
289 if ((rc = efx_mcdi_fini_rxq(enp, erp->er_index)) != 0)
295 EFSYS_PROBE1(fail1, efx_rc_t, rc);
305 _NOTE(ARGUNUSED(erp))
309 __checkReturn efx_rc_t
312 __in unsigned int index,
313 __in unsigned int label,
314 __in efx_rxq_type_t type,
315 __in efsys_mem_t *esmp,
321 efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
323 boolean_t disable_scatter;
324 unsigned int ps_buf_size;
326 _NOTE(ARGUNUSED(id, erp))
328 EFX_STATIC_ASSERT(EFX_EV_RX_NLABELS == (1 << ESF_DZ_RX_QLABEL_WIDTH));
329 EFSYS_ASSERT3U(label, <, EFX_EV_RX_NLABELS);
330 EFSYS_ASSERT3U(enp->en_rx_qcount + 1, <, encp->enc_rxq_limit);
332 EFX_STATIC_ASSERT(ISP2(EFX_RXQ_MAXNDESCS));
333 EFX_STATIC_ASSERT(ISP2(EFX_RXQ_MINNDESCS));
335 if (!ISP2(n) || (n < EFX_RXQ_MINNDESCS) || (n > EFX_RXQ_MAXNDESCS)) {
339 if (index >= encp->enc_rxq_limit) {
345 case EFX_RXQ_TYPE_DEFAULT:
346 case EFX_RXQ_TYPE_SCATTER:
354 EFSYS_ASSERT(ps_buf_size == 0);
356 /* Scatter can only be disabled if the firmware supports doing so */
357 if (type == EFX_RXQ_TYPE_SCATTER)
358 disable_scatter = B_FALSE;
360 disable_scatter = encp->enc_rx_disable_scatter_supported;
362 if ((rc = efx_mcdi_init_rxq(enp, n, eep->ee_index, label, index,
363 esmp, disable_scatter, ps_buf_size)) != 0)
367 erp->er_label = label;
369 ef10_ev_rxlabel_init(eep, erp, label, ps_buf_size != 0);
380 EFSYS_PROBE1(fail1, efx_rc_t, rc);
389 efx_nic_t *enp = erp->er_enp;
390 efx_evq_t *eep = erp->er_eep;
391 unsigned int label = erp->er_label;
393 ef10_ev_rxlabel_fini(eep, label);
395 EFSYS_ASSERT(enp->en_rx_qcount != 0);
398 EFSYS_KMEM_FREE(enp->en_esip, sizeof (efx_rxq_t), erp);
405 _NOTE(ARGUNUSED(enp))
408 #endif /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD */