1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Linux network driver for QLogic BR-series Converged Network Adapter.
4 */
5/*
6 * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
7 * Copyright (c) 2014-2015 QLogic Corporation
8 * All rights reserved
9 * www.qlogic.com
10 */
11
12#include "bfa_cee.h"
13#include "bfi_cna.h"
14#include "bfa_ioc.h"
15
16static void bfa_cee_format_lldp_cfg(struct bfa_cee_lldp_cfg *lldp_cfg);
17static void bfa_cee_format_cee_cfg(void *buffer);
18
19static void
20bfa_cee_format_cee_cfg(void *buffer)
21{
22	struct bfa_cee_attr *cee_cfg = buffer;
23	bfa_cee_format_lldp_cfg(&cee_cfg->lldp_remote);
24}
25
26static void
27bfa_cee_stats_swap(struct bfa_cee_stats *stats)
28{
29	u32 *buffer = (u32 *)stats;
30	int i;
31
32	for (i = 0; i < (sizeof(struct bfa_cee_stats) / sizeof(u32));
33		i++) {
34		buffer[i] = ntohl(buffer[i]);
35	}
36}
37
38static void
39bfa_cee_format_lldp_cfg(struct bfa_cee_lldp_cfg *lldp_cfg)
40{
41	lldp_cfg->time_to_live =
42			ntohs(lldp_cfg->time_to_live);
43	lldp_cfg->enabled_system_cap =
44			ntohs(lldp_cfg->enabled_system_cap);
45}
46
47/**
48 * bfa_cee_attr_meminfo - Returns the size of the DMA memory needed by CEE attributes
49 */
50static u32
51bfa_cee_attr_meminfo(void)
52{
53	return roundup(sizeof(struct bfa_cee_attr), BFA_DMA_ALIGN_SZ);
54}
55/**
56 * bfa_cee_stats_meminfo - Returns the size of the DMA memory needed by CEE stats
57 */
58static u32
59bfa_cee_stats_meminfo(void)
60{
61	return roundup(sizeof(struct bfa_cee_stats), BFA_DMA_ALIGN_SZ);
62}
63
64/**
65 * bfa_cee_get_attr_isr - CEE ISR for get-attributes responses from f/w
66 *
67 * @cee: Pointer to the CEE module
68 * @status: Return status from the f/w
69 */
70static void
71bfa_cee_get_attr_isr(struct bfa_cee *cee, enum bfa_status status)
72{
73	cee->get_attr_status = status;
74	if (status == BFA_STATUS_OK) {
75		memcpy(cee->attr, cee->attr_dma.kva,
76		    sizeof(struct bfa_cee_attr));
77		bfa_cee_format_cee_cfg(cee->attr);
78	}
79	cee->get_attr_pending = false;
80	if (cee->cbfn.get_attr_cbfn)
81		cee->cbfn.get_attr_cbfn(cee->cbfn.get_attr_cbarg, status);
82}
83
84/**
85 * bfa_cee_get_stats_isr - CEE ISR for get-stats responses from f/w
86 *
87 * @cee: Pointer to the CEE module
88 * @status: Return status from the f/w
89 */
90static void
91bfa_cee_get_stats_isr(struct bfa_cee *cee, enum bfa_status status)
92{
93	cee->get_stats_status = status;
94	if (status == BFA_STATUS_OK) {
95		memcpy(cee->stats, cee->stats_dma.kva,
96			sizeof(struct bfa_cee_stats));
97		bfa_cee_stats_swap(cee->stats);
98	}
99	cee->get_stats_pending = false;
100	if (cee->cbfn.get_stats_cbfn)
101		cee->cbfn.get_stats_cbfn(cee->cbfn.get_stats_cbarg, status);
102}
103
104/**
105 * bfa_cee_reset_stats_isr - CEE ISR for reset-stats responses from f/w
106 *
107 * @cee: Input Pointer to the CEE module
108 * @status: Return status from the f/w
109 */
110static void
111bfa_cee_reset_stats_isr(struct bfa_cee *cee, enum bfa_status status)
112{
113	cee->reset_stats_status = status;
114	cee->reset_stats_pending = false;
115	if (cee->cbfn.reset_stats_cbfn)
116		cee->cbfn.reset_stats_cbfn(cee->cbfn.reset_stats_cbarg, status);
117}
118/**
119 * bfa_nw_cee_meminfo - Returns the size of the DMA memory needed by CEE module
120 */
121u32
122bfa_nw_cee_meminfo(void)
123{
124	return bfa_cee_attr_meminfo() + bfa_cee_stats_meminfo();
125}
126
127/**
128 * bfa_nw_cee_mem_claim - Initialized CEE DMA Memory
129 *
130 * @cee: CEE module pointer
131 * @dma_kva: Kernel Virtual Address of CEE DMA Memory
132 * @dma_pa:  Physical Address of CEE DMA Memory
133 */
134void
135bfa_nw_cee_mem_claim(struct bfa_cee *cee, u8 *dma_kva, u64 dma_pa)
136{
137	cee->attr_dma.kva = dma_kva;
138	cee->attr_dma.pa = dma_pa;
139	cee->stats_dma.kva = dma_kva + bfa_cee_attr_meminfo();
140	cee->stats_dma.pa = dma_pa + bfa_cee_attr_meminfo();
141	cee->attr = (struct bfa_cee_attr *) dma_kva;
142	cee->stats = (struct bfa_cee_stats *)
143		(dma_kva + bfa_cee_attr_meminfo());
144}
145
146/**
147 * bfa_nw_cee_get_attr - Send the request to the f/w to fetch CEE attributes.
148 *
149 * @cee: Pointer to the CEE module data structure.
150 * @attr: attribute requested
151 * @cbfn: function pointer
152 * @cbarg: function pointer arguments
153 *
154 * Return: status
155 */
156enum bfa_status
157bfa_nw_cee_get_attr(struct bfa_cee *cee, struct bfa_cee_attr *attr,
158		    bfa_cee_get_attr_cbfn_t cbfn, void *cbarg)
159{
160	struct bfi_cee_get_req *cmd;
161
162	BUG_ON(!((cee != NULL) && (cee->ioc != NULL)));
163	if (!bfa_nw_ioc_is_operational(cee->ioc))
164		return BFA_STATUS_IOC_FAILURE;
165
166	if (cee->get_attr_pending)
167		return  BFA_STATUS_DEVBUSY;
168
169	cee->get_attr_pending = true;
170	cmd = (struct bfi_cee_get_req *) cee->get_cfg_mb.msg;
171	cee->attr = attr;
172	cee->cbfn.get_attr_cbfn = cbfn;
173	cee->cbfn.get_attr_cbarg = cbarg;
174	bfi_h2i_set(cmd->mh, BFI_MC_CEE, BFI_CEE_H2I_GET_CFG_REQ,
175		    bfa_ioc_portid(cee->ioc));
176	bfa_dma_be_addr_set(cmd->dma_addr, cee->attr_dma.pa);
177	bfa_nw_ioc_mbox_queue(cee->ioc, &cee->get_cfg_mb, NULL, NULL);
178
179	return BFA_STATUS_OK;
180}
181
182/**
183 * bfa_cee_isr - Handles Mail-box interrupts for CEE module.
184 * @cbarg: argument passed containing pointer to the CEE module data structure.
185 * @m: message pointer
186 */
187
188static void
189bfa_cee_isr(void *cbarg, struct bfi_mbmsg *m)
190{
191	union bfi_cee_i2h_msg_u *msg;
192	struct bfi_cee_get_rsp *get_rsp;
193	struct bfa_cee *cee = (struct bfa_cee *) cbarg;
194	msg = (union bfi_cee_i2h_msg_u *) m;
195	get_rsp = (struct bfi_cee_get_rsp *) m;
196	switch (msg->mh.msg_id) {
197	case BFI_CEE_I2H_GET_CFG_RSP:
198		bfa_cee_get_attr_isr(cee, get_rsp->cmd_status);
199		break;
200	case BFI_CEE_I2H_GET_STATS_RSP:
201		bfa_cee_get_stats_isr(cee, get_rsp->cmd_status);
202		break;
203	case BFI_CEE_I2H_RESET_STATS_RSP:
204		bfa_cee_reset_stats_isr(cee, get_rsp->cmd_status);
205		break;
206	default:
207		BUG_ON(1);
208	}
209}
210
211/**
212 * bfa_cee_notify - CEE module heart-beat failure handler.
213 *
214 * @arg: argument passed containing pointer to the CEE module data structure.
215 * @event: IOC event type
216 */
217
218static void
219bfa_cee_notify(void *arg, enum bfa_ioc_event event)
220{
221	struct bfa_cee *cee;
222	cee = (struct bfa_cee *) arg;
223
224	switch (event) {
225	case BFA_IOC_E_DISABLED:
226	case BFA_IOC_E_FAILED:
227		if (cee->get_attr_pending) {
228			cee->get_attr_status = BFA_STATUS_FAILED;
229			cee->get_attr_pending  = false;
230			if (cee->cbfn.get_attr_cbfn) {
231				cee->cbfn.get_attr_cbfn(
232					cee->cbfn.get_attr_cbarg,
233					BFA_STATUS_FAILED);
234			}
235		}
236		if (cee->get_stats_pending) {
237			cee->get_stats_status = BFA_STATUS_FAILED;
238			cee->get_stats_pending  = false;
239			if (cee->cbfn.get_stats_cbfn) {
240				cee->cbfn.get_stats_cbfn(
241					cee->cbfn.get_stats_cbarg,
242					BFA_STATUS_FAILED);
243			}
244		}
245		if (cee->reset_stats_pending) {
246			cee->reset_stats_status = BFA_STATUS_FAILED;
247			cee->reset_stats_pending  = false;
248			if (cee->cbfn.reset_stats_cbfn) {
249				cee->cbfn.reset_stats_cbfn(
250					cee->cbfn.reset_stats_cbarg,
251					BFA_STATUS_FAILED);
252			}
253		}
254		break;
255
256	default:
257		break;
258	}
259}
260
261/**
262 * bfa_nw_cee_attach - CEE module-attach API
263 *
264 * @cee: Pointer to the CEE module data structure
265 * @ioc: Pointer to the ioc module data structure
266 * @dev: Pointer to the device driver module data structure.
267 *       The device driver specific mbox ISR functions have
268 *       this pointer as one of the parameters.
269 */
270void
271bfa_nw_cee_attach(struct bfa_cee *cee, struct bfa_ioc *ioc,
272		void *dev)
273{
274	BUG_ON(!(cee != NULL));
275	cee->dev = dev;
276	cee->ioc = ioc;
277
278	bfa_nw_ioc_mbox_regisr(cee->ioc, BFI_MC_CEE, bfa_cee_isr, cee);
279	bfa_ioc_notify_init(&cee->ioc_notify, bfa_cee_notify, cee);
280	bfa_nw_ioc_notify_register(cee->ioc, &cee->ioc_notify);
281}
282