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1// SPDX-License-Identifier: GPL-2.0-only2/*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 Corporation8 * All rights reserved9 * www.qlogic.com10 */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 void20bfa_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 void27bfa_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 void39bfa_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 attributes49 */50static u3251bfa_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 stats57 */58static u3259bfa_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/w66 *67 * @cee: Pointer to the CEE module68 * @status: Return status from the f/w69 */70static void71bfa_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/w86 *87 * @cee: Pointer to the CEE module88 * @status: Return status from the f/w89 */90static void91bfa_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/w106 *107 * @cee: Input Pointer to the CEE module108 * @status: Return status from the f/w109 */110static void111bfa_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 module120 */121u32122bfa_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 Memory129 *130 * @cee: CEE module pointer131 * @dma_kva: Kernel Virtual Address of CEE DMA Memory132 * @dma_pa: Physical Address of CEE DMA Memory133 */134void135bfa_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 requested151 * @cbfn: function pointer152 * @cbarg: function pointer arguments153 *154 * Return: status155 */156enum bfa_status157bfa_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 pointer186 */187 188static void189bfa_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 type216 */217 218static void219bfa_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 API263 *264 * @cee: Pointer to the CEE module data structure265 * @ioc: Pointer to the ioc module data structure266 * @dev: Pointer to the device driver module data structure.267 * The device driver specific mbox ISR functions have268 * this pointer as one of the parameters.269 */270void271bfa_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