1/* QLogic qed NIC Driver
2 * Copyright (c) 2015 QLogic Corporation
3 *
4 * This software is available under the terms of the GNU General Public License
5 * (GPL) Version 2, available from the file COPYING in the main directory of
6 * this source tree.
7 */
8
9#include <linux/types.h>
10#include <asm/byteorder.h>
11#include <linux/bitops.h>
12#include <linux/errno.h>
13#include <linux/kernel.h>
14#include <linux/string.h>
15#include "qed.h"
16#include <linux/qed/qed_chain.h>
17#include "qed_cxt.h"
18#include "qed_hsi.h"
19#include "qed_hw.h"
20#include "qed_int.h"
21#include "qed_reg_addr.h"
22#include "qed_sp.h"
23
24int qed_sp_init_request(struct qed_hwfn *p_hwfn,
25			struct qed_spq_entry **pp_ent,
26			u32 cid,
27			u16 opaque_fid,
28			u8 cmd,
29			u8 protocol,
30			struct qed_sp_init_request_params *p_params)
31{
32	int rc = -EINVAL;
33	struct qed_spq_entry *p_ent = NULL;
34	u32 opaque_cid = opaque_fid << 16 | cid;
35
36	if (!pp_ent)
37		return -ENOMEM;
38
39	rc = qed_spq_get_entry(p_hwfn, pp_ent);
40
41	if (rc != 0)
42		return rc;
43
44	p_ent = *pp_ent;
45
46	p_ent->elem.hdr.cid		= cpu_to_le32(opaque_cid);
47	p_ent->elem.hdr.cmd_id		= cmd;
48	p_ent->elem.hdr.protocol_id	= protocol;
49
50	p_ent->priority		= QED_SPQ_PRIORITY_NORMAL;
51	p_ent->comp_mode	= p_params->comp_mode;
52	p_ent->comp_done.done	= 0;
53
54	switch (p_ent->comp_mode) {
55	case QED_SPQ_MODE_EBLOCK:
56		p_ent->comp_cb.cookie = &p_ent->comp_done;
57		break;
58
59	case QED_SPQ_MODE_BLOCK:
60		if (!p_params->p_comp_data)
61			return -EINVAL;
62
63		p_ent->comp_cb.cookie = p_params->p_comp_data->cookie;
64		break;
65
66	case QED_SPQ_MODE_CB:
67		if (!p_params->p_comp_data)
68			p_ent->comp_cb.function = NULL;
69		else
70			p_ent->comp_cb = *p_params->p_comp_data;
71		break;
72
73	default:
74		DP_NOTICE(p_hwfn, "Unknown SPQE completion mode %d\n",
75			  p_ent->comp_mode);
76		return -EINVAL;
77	}
78
79	DP_VERBOSE(p_hwfn, QED_MSG_SPQ,
80		   "Initialized: CID %08x cmd %02x protocol %02x data_addr %lu comp_mode [%s]\n",
81		   opaque_cid, cmd, protocol,
82		   (unsigned long)&p_ent->ramrod,
83		   D_TRINE(p_ent->comp_mode, QED_SPQ_MODE_EBLOCK,
84			   QED_SPQ_MODE_BLOCK, "MODE_EBLOCK", "MODE_BLOCK",
85			   "MODE_CB"));
86	if (p_params->ramrod_data_size)
87		memset(&p_ent->ramrod, 0, p_params->ramrod_data_size);
88
89	return 0;
90}
91
92int qed_sp_pf_start(struct qed_hwfn *p_hwfn,
93		    enum mf_mode mode)
94{
95	struct qed_sp_init_request_params params;
96	struct pf_start_ramrod_data *p_ramrod = NULL;
97	u16 sb = qed_int_get_sp_sb_id(p_hwfn);
98	u8 sb_index = p_hwfn->p_eq->eq_sb_index;
99	struct qed_spq_entry *p_ent = NULL;
100	int rc = -EINVAL;
101
102	/* update initial eq producer */
103	qed_eq_prod_update(p_hwfn,
104			   qed_chain_get_prod_idx(&p_hwfn->p_eq->chain));
105
106	memset(&params, 0, sizeof(params));
107	params.ramrod_data_size = sizeof(*p_ramrod);
108	params.comp_mode = QED_SPQ_MODE_EBLOCK;
109
110	rc = qed_sp_init_request(p_hwfn,
111				 &p_ent,
112				 qed_spq_get_cid(p_hwfn),
113				 p_hwfn->hw_info.opaque_fid,
114				 COMMON_RAMROD_PF_START,
115				 PROTOCOLID_COMMON,
116				 &params);
117	if (rc)
118		return rc;
119
120	p_ramrod = &p_ent->ramrod.pf_start;
121
122	p_ramrod->event_ring_sb_id	= cpu_to_le16(sb);
123	p_ramrod->event_ring_sb_index	= sb_index;
124	p_ramrod->path_id		= QED_PATH_ID(p_hwfn);
125	p_ramrod->dont_log_ramrods	= 0;
126	p_ramrod->log_type_mask		= cpu_to_le16(0xf);
127	p_ramrod->mf_mode = mode;
128	p_ramrod->outer_tag = p_hwfn->hw_info.ovlan;
129
130	/* Place EQ address in RAMROD */
131	p_ramrod->event_ring_pbl_addr.hi =
132			DMA_HI_LE(p_hwfn->p_eq->chain.pbl.p_phys_table);
133	p_ramrod->event_ring_pbl_addr.lo =
134			DMA_LO_LE(p_hwfn->p_eq->chain.pbl.p_phys_table);
135	p_ramrod->event_ring_num_pages = (u8)p_hwfn->p_eq->chain.page_cnt;
136
137	p_ramrod->consolid_q_pbl_addr.hi =
138			DMA_HI_LE(p_hwfn->p_consq->chain.pbl.p_phys_table);
139	p_ramrod->consolid_q_pbl_addr.lo =
140			DMA_LO_LE(p_hwfn->p_consq->chain.pbl.p_phys_table);
141
142	p_hwfn->hw_info.personality = PERSONALITY_ETH;
143
144	DP_VERBOSE(p_hwfn, QED_MSG_SPQ,
145		   "Setting event_ring_sb [id %04x index %02x], mf [%s] outer_tag [%d]\n",
146		   sb, sb_index,
147		   (p_ramrod->mf_mode == SF) ? "SF" : "Multi-Pf",
148		   p_ramrod->outer_tag);
149
150	return qed_spq_post(p_hwfn, p_ent, NULL);
151}
152
153int qed_sp_pf_stop(struct qed_hwfn *p_hwfn)
154{
155	struct qed_sp_init_request_params params;
156	struct qed_spq_entry *p_ent = NULL;
157	int rc = -EINVAL;
158
159	memset(&params, 0, sizeof(params));
160	params.comp_mode = QED_SPQ_MODE_EBLOCK;
161
162	rc = qed_sp_init_request(p_hwfn, &p_ent, qed_spq_get_cid(p_hwfn),
163				 p_hwfn->hw_info.opaque_fid,
164				 COMMON_RAMROD_PF_STOP, PROTOCOLID_COMMON,
165				 &params);
166	if (rc)
167		return rc;
168
169	return qed_spq_post(p_hwfn, p_ent, NULL);
170}
171