1/*-
2 *   BSD LICENSE
3 *
4 *   Copyright(c) Broadcom Limited.
5 *   All rights reserved.
6 *
7 *   Redistribution and use in source and binary forms, with or without
8 *   modification, are permitted provided that the following conditions
9 *   are met:
10 *
11 *     * Redistributions of source code must retain the above copyright
12 *       notice, this list of conditions and the following disclaimer.
13 *     * Redistributions in binary form must reproduce the above copyright
14 *       notice, this list of conditions and the following disclaimer in
15 *       the documentation and/or other materials provided with the
16 *       distribution.
17 *     * Neither the name of Broadcom Corporation nor the names of its
18 *       contributors may be used to endorse or promote products derived
19 *       from this software without specific prior written permission.
20 *
21 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#include <rte_memzone.h>
35
36#include "bnxt.h"
37#include "bnxt_cpr.h"
38#include "bnxt_hwrm.h"
39#include "bnxt_ring.h"
40#include "bnxt_rxq.h"
41#include "bnxt_rxr.h"
42#include "bnxt_txq.h"
43#include "bnxt_txr.h"
44
45#include "hsi_struct_def_dpdk.h"
46
47/*
48 * Generic ring handling
49 */
50
51void bnxt_free_ring(struct bnxt_ring *ring)
52{
53	if (ring->vmem_size && *ring->vmem) {
54		memset((char *)*ring->vmem, 0, ring->vmem_size);
55		*ring->vmem = NULL;
56	}
57	ring->mem_zone = NULL;
58}
59
60/*
61 * Ring groups
62 */
63
64int bnxt_init_ring_grps(struct bnxt *bp)
65{
66	unsigned int i;
67
68	//One slot is still consumed by Default ring.
69	if (bp->max_ring_grps < 1 + bp->rx_cp_nr_rings)
70		return -ENOMEM;
71
72	for (i = 0; i < bp->max_ring_grps; i++)
73		memset(&bp->grp_info[i], (uint8_t)HWRM_NA_SIGNATURE,
74		       sizeof(struct bnxt_ring_grp_info));
75
76	return 0;
77}
78
79/*
80 * Allocates a completion ring with vmem and stats optionally also allocating
81 * a TX and/or RX ring.  Passing NULL as tx_ring_info and/or rx_ring_info
82 * to not allocate them.
83 *
84 * Order in the allocation is:
85 * stats - Always non-zero length
86 * cp vmem - Always zero-length, supported for the bnxt_ring abstraction
87 * tx vmem - Only non-zero length if tx_ring_info is not NULL
88 * rx vmem - Only non-zero length if rx_ring_info is not NULL
89 * cp bd ring - Always non-zero length
90 * tx bd ring - Only non-zero length if tx_ring_info is not NULL
91 * rx bd ring - Only non-zero length if rx_ring_info is not NULL
92 */
93int bnxt_alloc_rings(struct bnxt *bp, uint16_t qidx,
94			    struct bnxt_tx_queue *txq,
95			    struct bnxt_rx_queue *rxq,
96			    struct bnxt_cp_ring_info *cp_ring_info,
97			    const char *suffix)
98{
99	struct bnxt_ring *cp_ring = cp_ring_info->cp_ring_struct;
100	struct bnxt_rx_ring_info *rx_ring_info = rxq ? rxq->rx_ring : NULL;
101	struct bnxt_tx_ring_info *tx_ring_info = txq ? txq->tx_ring : NULL;
102	struct bnxt_ring *tx_ring;
103	struct bnxt_ring *rx_ring;
104	struct rte_pci_device *pdev = bp->pdev;
105	const struct rte_memzone *mz = NULL;
106	char mz_name[RTE_MEMZONE_NAMESIZE];
107
108	int stats_len = (tx_ring_info || rx_ring_info) ?
109	    RTE_CACHE_LINE_ROUNDUP(sizeof(struct ctx_hw_stats64)) : 0;
110
111	int cp_vmem_start = stats_len;
112	int cp_vmem_len = RTE_CACHE_LINE_ROUNDUP(cp_ring->vmem_size);
113
114	int tx_vmem_start = cp_vmem_start + cp_vmem_len;
115	int tx_vmem_len =
116	    tx_ring_info ? RTE_CACHE_LINE_ROUNDUP(tx_ring_info->
117						tx_ring_struct->vmem_size) : 0;
118
119	int rx_vmem_start = tx_vmem_start + tx_vmem_len;
120	int rx_vmem_len = rx_ring_info ?
121		RTE_CACHE_LINE_ROUNDUP(rx_ring_info->
122						rx_ring_struct->vmem_size) : 0;
123
124	int cp_ring_start = rx_vmem_start + rx_vmem_len;
125	int cp_ring_len = RTE_CACHE_LINE_ROUNDUP(cp_ring->ring_size *
126						 sizeof(struct cmpl_base));
127
128	int tx_ring_start = cp_ring_start + cp_ring_len;
129	int tx_ring_len = tx_ring_info ?
130	    RTE_CACHE_LINE_ROUNDUP(tx_ring_info->tx_ring_struct->ring_size *
131				   sizeof(struct tx_bd_long)) : 0;
132
133	int rx_ring_start = tx_ring_start + tx_ring_len;
134	int rx_ring_len =  rx_ring_info ?
135		RTE_CACHE_LINE_ROUNDUP(rx_ring_info->rx_ring_struct->ring_size *
136		sizeof(struct rx_prod_pkt_bd)) : 0;
137
138	int total_alloc_len = rx_ring_start + rx_ring_len;
139
140	snprintf(mz_name, RTE_MEMZONE_NAMESIZE,
141		 "bnxt_%04x:%02x:%02x:%02x-%04x_%s", pdev->addr.domain,
142		 pdev->addr.bus, pdev->addr.devid, pdev->addr.function, qidx,
143		 suffix);
144	mz_name[RTE_MEMZONE_NAMESIZE - 1] = 0;
145	mz = rte_memzone_lookup(mz_name);
146	if (!mz) {
147		mz = rte_memzone_reserve(mz_name, total_alloc_len,
148					 SOCKET_ID_ANY,
149					 RTE_MEMZONE_2MB |
150					 RTE_MEMZONE_SIZE_HINT_ONLY);
151		if (mz == NULL)
152			return -ENOMEM;
153	}
154	memset(mz->addr, 0, mz->len);
155
156	if (tx_ring_info) {
157		txq->mz = mz;
158		tx_ring = tx_ring_info->tx_ring_struct;
159
160		tx_ring->bd = ((char *)mz->addr + tx_ring_start);
161		tx_ring_info->tx_desc_ring = (struct tx_bd_long *)tx_ring->bd;
162		tx_ring->bd_dma = mz->phys_addr + tx_ring_start;
163		tx_ring_info->tx_desc_mapping = tx_ring->bd_dma;
164		tx_ring->mem_zone = (const void *)mz;
165
166		if (!tx_ring->bd)
167			return -ENOMEM;
168		if (tx_ring->vmem_size) {
169			tx_ring->vmem =
170			    (void **)((char *)mz->addr + tx_vmem_start);
171			tx_ring_info->tx_buf_ring =
172			    (struct bnxt_sw_tx_bd *)tx_ring->vmem;
173		}
174	}
175
176	if (rx_ring_info) {
177		rxq->mz = mz;
178		rx_ring = rx_ring_info->rx_ring_struct;
179
180		rx_ring->bd = ((char *)mz->addr + rx_ring_start);
181		rx_ring_info->rx_desc_ring =
182		    (struct rx_prod_pkt_bd *)rx_ring->bd;
183		rx_ring->bd_dma = mz->phys_addr + rx_ring_start;
184		rx_ring_info->rx_desc_mapping = rx_ring->bd_dma;
185		rx_ring->mem_zone = (const void *)mz;
186
187		if (!rx_ring->bd)
188			return -ENOMEM;
189		if (rx_ring->vmem_size) {
190			rx_ring->vmem =
191			    (void **)((char *)mz->addr + rx_vmem_start);
192			rx_ring_info->rx_buf_ring =
193			    (struct bnxt_sw_rx_bd *)rx_ring->vmem;
194		}
195	}
196
197	cp_ring->bd = ((char *)mz->addr + cp_ring_start);
198	cp_ring->bd_dma = mz->phys_addr + cp_ring_start;
199	cp_ring_info->cp_desc_ring = cp_ring->bd;
200	cp_ring_info->cp_desc_mapping = cp_ring->bd_dma;
201	cp_ring->mem_zone = (const void *)mz;
202
203	if (!cp_ring->bd)
204		return -ENOMEM;
205	if (cp_ring->vmem_size)
206		*cp_ring->vmem = ((char *)mz->addr + stats_len);
207	if (stats_len) {
208		cp_ring_info->hw_stats = mz->addr;
209		cp_ring_info->hw_stats_map = mz->phys_addr;
210	}
211	cp_ring_info->hw_stats_ctx_id = HWRM_NA_SIGNATURE;
212	return 0;
213}
214
215/* ring_grp usage:
216 * [0] = default completion ring
217 * [1 -> +rx_cp_nr_rings] = rx_cp, rx rings
218 * [1+rx_cp_nr_rings + 1 -> +tx_cp_nr_rings] = tx_cp, tx rings
219 */
220int bnxt_alloc_hwrm_rings(struct bnxt *bp)
221{
222	unsigned int i;
223	int rc = 0;
224
225	/* Default completion ring */
226	{
227		struct bnxt_cp_ring_info *cpr = bp->def_cp_ring;
228		struct bnxt_ring *cp_ring = cpr->cp_ring_struct;
229
230		rc = bnxt_hwrm_ring_alloc(bp, cp_ring,
231					  HWRM_RING_ALLOC_INPUT_RING_TYPE_CMPL,
232					  0, HWRM_NA_SIGNATURE,
233					  HWRM_NA_SIGNATURE);
234		if (rc)
235			goto err_out;
236		cpr->cp_doorbell =
237		    (char *)bp->eth_dev->pci_dev->mem_resource[2].addr;
238		B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
239		bp->grp_info[0].cp_fw_ring_id = cp_ring->fw_ring_id;
240	}
241
242	for (i = 0; i < bp->rx_cp_nr_rings; i++) {
243		struct bnxt_rx_queue *rxq = bp->rx_queues[i];
244		struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
245		struct bnxt_ring *cp_ring = cpr->cp_ring_struct;
246		struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
247		struct bnxt_ring *ring = rxr->rx_ring_struct;
248		unsigned int idx = i + 1;
249
250		/* Rx cmpl */
251		rc = bnxt_hwrm_ring_alloc(bp, cp_ring,
252					HWRM_RING_ALLOC_INPUT_RING_TYPE_CMPL,
253					idx, HWRM_NA_SIGNATURE,
254					HWRM_NA_SIGNATURE);
255		if (rc)
256			goto err_out;
257		cpr->cp_doorbell =
258		    (char *)bp->eth_dev->pci_dev->mem_resource[2].addr +
259		    idx * 0x80;
260		bp->grp_info[idx].cp_fw_ring_id = cp_ring->fw_ring_id;
261		B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
262
263		/* Rx ring */
264		rc = bnxt_hwrm_ring_alloc(bp, ring,
265					HWRM_RING_ALLOC_INPUT_RING_TYPE_RX,
266					idx, cpr->hw_stats_ctx_id,
267					cp_ring->fw_ring_id);
268		if (rc)
269			goto err_out;
270		rxr->rx_prod = 0;
271		rxr->rx_doorbell =
272		    (char *)bp->eth_dev->pci_dev->mem_resource[2].addr +
273		    idx * 0x80;
274		bp->grp_info[idx].rx_fw_ring_id = ring->fw_ring_id;
275		B_RX_DB(rxr->rx_doorbell, rxr->rx_prod);
276		if (bnxt_init_one_rx_ring(rxq)) {
277			RTE_LOG(ERR, PMD, "bnxt_init_one_rx_ring failed!");
278			bnxt_rx_queue_release_op(rxq);
279			return -ENOMEM;
280		}
281		B_RX_DB(rxr->rx_doorbell, rxr->rx_prod);
282	}
283
284	for (i = 0; i < bp->tx_cp_nr_rings; i++) {
285		struct bnxt_tx_queue *txq = bp->tx_queues[i];
286		struct bnxt_cp_ring_info *cpr = txq->cp_ring;
287		struct bnxt_ring *cp_ring = cpr->cp_ring_struct;
288		struct bnxt_tx_ring_info *txr = txq->tx_ring;
289		struct bnxt_ring *ring = txr->tx_ring_struct;
290		unsigned int idx = 1 + bp->rx_cp_nr_rings + i;
291
292		/* Tx cmpl */
293		rc = bnxt_hwrm_ring_alloc(bp, cp_ring,
294					HWRM_RING_ALLOC_INPUT_RING_TYPE_CMPL,
295					idx, HWRM_NA_SIGNATURE,
296					HWRM_NA_SIGNATURE);
297		if (rc)
298			goto err_out;
299
300		cpr->cp_doorbell =
301		    (char *)bp->eth_dev->pci_dev->mem_resource[2].addr +
302		    idx * 0x80;
303		B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
304
305		/* Tx ring */
306		rc = bnxt_hwrm_ring_alloc(bp, ring,
307					HWRM_RING_ALLOC_INPUT_RING_TYPE_TX,
308					idx, cpr->hw_stats_ctx_id,
309					cp_ring->fw_ring_id);
310		if (rc)
311			goto err_out;
312
313		txr->tx_doorbell =
314		    (char *)bp->eth_dev->pci_dev->mem_resource[2].addr +
315		    idx * 0x80;
316	}
317
318err_out:
319	return rc;
320}
321