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
16 static void bfa_cee_format_lldp_cfg(struct bfa_cee_lldp_cfg *lldp_cfg);
17 static void bfa_cee_format_cee_cfg(void *buffer);
18
19 static void
bfa_cee_format_cee_cfg(void * buffer)20 bfa_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
26 static void
bfa_cee_stats_swap(struct bfa_cee_stats * stats)27 bfa_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
38 static void
bfa_cee_format_lldp_cfg(struct bfa_cee_lldp_cfg * lldp_cfg)39 bfa_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 */
50 static u32
bfa_cee_attr_meminfo(void)51 bfa_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 */
58 static u32
bfa_cee_stats_meminfo(void)59 bfa_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 */
70 static void
bfa_cee_get_attr_isr(struct bfa_cee * cee,enum bfa_status status)71 bfa_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 */
90 static void
bfa_cee_get_stats_isr(struct bfa_cee * cee,enum bfa_status status)91 bfa_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 */
110 static void
bfa_cee_reset_stats_isr(struct bfa_cee * cee,enum bfa_status status)111 bfa_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 */
121 u32
bfa_nw_cee_meminfo(void)122 bfa_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 */
134 void
bfa_nw_cee_mem_claim(struct bfa_cee * cee,u8 * dma_kva,u64 dma_pa)135 bfa_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 */
156 enum bfa_status
bfa_nw_cee_get_attr(struct bfa_cee * cee,struct bfa_cee_attr * attr,bfa_cee_get_attr_cbfn_t cbfn,void * cbarg)157 bfa_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
188 static void
bfa_cee_isr(void * cbarg,struct bfi_mbmsg * m)189 bfa_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
218 static void
bfa_cee_notify(void * arg,enum bfa_ioc_event event)219 bfa_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 */
270 void
bfa_nw_cee_attach(struct bfa_cee * cee,struct bfa_ioc * ioc,void * dev)271 bfa_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