drivers/net/bna/bfa_cee.c

   1 /*
   2  * Linux network driver for Brocade Converged Network Adapter.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License (GPL) Version 2 as
   6  * published by the Free Software Foundation
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  */
  13 /*
  14  * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
  15  * All rights reserved
  16  * www.brocade.com
  17  */
  18
  19 #include "bfa_defs_cna.h"
  20 #include "cna.h"
  21 #include "bfa_cee.h"
  22 #include "bfi_cna.h"
  23 #include "bfa_ioc.h"
  24
  25 #define bfa_ioc_portid(__ioc) ((__ioc)->port_id)
  26 #define bfa_lpuid(__arg) bfa_ioc_portid(&(__arg)->ioc)
  27
  28 static void bfa_cee_format_lldp_cfg(struct bfa_cee_lldp_cfg *lldp_cfg);
  29 static void bfa_cee_format_cee_cfg(void *buffer);
  30
  31 static void
  32 bfa_cee_format_cee_cfg(void *buffer)
  33 {
  34         struct bfa_cee_attr *cee_cfg = buffer;
  35         bfa_cee_format_lldp_cfg(&cee_cfg->lldp_remote);
  36 }
  37
  38 static void
  39 bfa_cee_stats_swap(struct bfa_cee_stats *stats)
  40 {
  41         u32 *buffer = (u32 *)stats;
  42         int i;
  43
  44         for (i = 0; i < (sizeof(struct bfa_cee_stats) / sizeof(u32));
  45                 i++) {
  46                 buffer[i] = ntohl(buffer[i]);
  47         }
  48 }
  49
  50 static void
  51 bfa_cee_format_lldp_cfg(struct bfa_cee_lldp_cfg *lldp_cfg)
  52 {
  53         lldp_cfg->time_to_live =
  54                         ntohs(lldp_cfg->time_to_live);
  55         lldp_cfg->enabled_system_cap =
  56                         ntohs(lldp_cfg->enabled_system_cap);
  57 }
  58
  59 /**
  60  * bfa_cee_attr_meminfo()
  61  *
  62  * @brief Returns the size of the DMA memory needed by CEE attributes
  63  *
  64  * @param[in] void
  65  *
  66  * @return Size of DMA region
  67  */
  68 static u32
  69 bfa_cee_attr_meminfo(void)
  70 {
  71         return roundup(sizeof(struct bfa_cee_attr), BFA_DMA_ALIGN_SZ);
  72 }
  73 /**
  74  * bfa_cee_stats_meminfo()
  75  *
  76  * @brief Returns the size of the DMA memory needed by CEE stats
  77  *
  78  * @param[in] void
  79  *
  80  * @return Size of DMA region
  81  */
  82 static u32
  83 bfa_cee_stats_meminfo(void)
  84 {
  85         return roundup(sizeof(struct bfa_cee_stats), BFA_DMA_ALIGN_SZ);
  86 }
  87
  88 /**
  89  * bfa_cee_get_attr_isr()
  90  *
  91  * @brief CEE ISR for get-attributes responses from f/w
  92  *
  93  * @param[in] cee - Pointer to the CEE module
  94  *            status - Return status from the f/w
  95  *
  96  * @return void
  97  */
  98 static void
  99 bfa_cee_get_attr_isr(struct bfa_cee *cee, enum bfa_status status)
 100 {
 101         cee->get_attr_status = status;
 102         if (status == BFA_STATUS_OK) {
 103                 memcpy(cee->attr, cee->attr_dma.kva,
 104                     sizeof(struct bfa_cee_attr));
 105                 bfa_cee_format_cee_cfg(cee->attr);
 106         }
 107         cee->get_attr_pending = false;
 108         if (cee->cbfn.get_attr_cbfn)
 109                 cee->cbfn.get_attr_cbfn(cee->cbfn.get_attr_cbarg, status);
 110 }
 111
 112 /**
 113  * bfa_cee_get_attr_isr()
 114  *
 115  * @brief CEE ISR for get-stats responses from f/w
 116  *
 117  * @param[in] cee - Pointer to the CEE module
 118  *            status - Return status from the f/w
 119  *
 120  * @return void
 121  */
 122 static void
 123 bfa_cee_get_stats_isr(struct bfa_cee *cee, enum bfa_status status)
 124 {
 125         cee->get_stats_status = status;
 126         if (status == BFA_STATUS_OK) {
 127                 memcpy(cee->stats, cee->stats_dma.kva,
 128                         sizeof(struct bfa_cee_stats));
 129                 bfa_cee_stats_swap(cee->stats);
 130         }
 131         cee->get_stats_pending = false;
 132         if (cee->cbfn.get_stats_cbfn)
 133                 cee->cbfn.get_stats_cbfn(cee->cbfn.get_stats_cbarg, status);
 134 }
 135
 136 /**
 137  * bfa_cee_get_attr_isr()
 138  *
 139  * @brief CEE ISR for reset-stats responses from f/w
 140  *
 141  * @param[in] cee - Pointer to the CEE module
 142  *            status - Return status from the f/w
 143  *
 144  * @return void
 145  */
 146 static void
 147 bfa_cee_reset_stats_isr(struct bfa_cee *cee, enum bfa_status status)
 148 {
 149         cee->reset_stats_status = status;
 150         cee->reset_stats_pending = false;
 151         if (cee->cbfn.reset_stats_cbfn)
 152                 cee->cbfn.reset_stats_cbfn(cee->cbfn.reset_stats_cbarg, status);
 153 }
 154 /**
 155  * bfa_nw_cee_meminfo()
 156  *
 157  * @brief Returns the size of the DMA memory needed by CEE module
 158  *
 159  * @param[in] void
 160  *
 161  * @return Size of DMA region
 162  */
 163 u32
 164 bfa_nw_cee_meminfo(void)
 165 {
 166         return bfa_cee_attr_meminfo() + bfa_cee_stats_meminfo();
 167 }
 168
 169 /**
 170  * bfa_nw_cee_mem_claim()
 171  *
 172  * @brief Initialized CEE DMA Memory
 173  *
 174  * @param[in] cee CEE module pointer
 175  *            dma_kva Kernel Virtual Address of CEE DMA Memory
 176  *            dma_pa  Physical Address of CEE DMA Memory
 177  *
 178  * @return void
 179  */
 180 void
 181 bfa_nw_cee_mem_claim(struct bfa_cee *cee, u8 *dma_kva, u64 dma_pa)
 182 {
 183         cee->attr_dma.kva = dma_kva;
 184         cee->attr_dma.pa = dma_pa;
 185         cee->stats_dma.kva = dma_kva + bfa_cee_attr_meminfo();
 186         cee->stats_dma.pa = dma_pa + bfa_cee_attr_meminfo();
 187         cee->attr = (struct bfa_cee_attr *) dma_kva;
 188         cee->stats = (struct bfa_cee_stats *)
 189                 (dma_kva + bfa_cee_attr_meminfo());
 190 }
 191
 192 /**
 193  * bfa_cee_isrs()
 194  *
 195  * @brief Handles Mail-box interrupts for CEE module.
 196  *
 197  * @param[in] Pointer to the CEE module data structure.
 198  *
 199  * @return void
 200  */
 201
 202 static void
 203 bfa_cee_isr(void *cbarg, struct bfi_mbmsg *m)
 204 {
 205         union bfi_cee_i2h_msg_u *msg;
 206         struct bfi_cee_get_rsp *get_rsp;
 207         struct bfa_cee *cee = (struct bfa_cee *) cbarg;
 208         msg = (union bfi_cee_i2h_msg_u *) m;
 209         get_rsp = (struct bfi_cee_get_rsp *) m;
 210         switch (msg->mh.msg_id) {
 211         case BFI_CEE_I2H_GET_CFG_RSP:
 212                 bfa_cee_get_attr_isr(cee, get_rsp->cmd_status);
 213                 break;
 214         case BFI_CEE_I2H_GET_STATS_RSP:
 215                 bfa_cee_get_stats_isr(cee, get_rsp->cmd_status);
 216                 break;
 217         case BFI_CEE_I2H_RESET_STATS_RSP:
 218                 bfa_cee_reset_stats_isr(cee, get_rsp->cmd_status);
 219                 break;
 220         default:
 221                 BUG_ON(1);
 222         }
 223 }
 224
 225 /**
 226  * bfa_cee_notify()
 227  *
 228  * @brief CEE module heart-beat failure handler.
 229  * @brief CEE module IOC event handler.
 230  *
 231  * @param[in] IOC event type
 232  *
 233  * @return void
 234  */
 235
 236 static void
 237 bfa_cee_notify(void *arg, enum bfa_ioc_event event)
 238 {
 239         struct bfa_cee *cee;
 240         cee = (struct bfa_cee *) arg;
 241
 242         switch (event) {
 243         case BFA_IOC_E_DISABLED:
 244         case BFA_IOC_E_FAILED:
 245                 if (cee->get_attr_pending == true) {
 246                         cee->get_attr_status = BFA_STATUS_FAILED;
 247                         cee->get_attr_pending  = false;
 248                         if (cee->cbfn.get_attr_cbfn) {
 249                                 cee->cbfn.get_attr_cbfn(
 250                                         cee->cbfn.get_attr_cbarg,
 251                                         BFA_STATUS_FAILED);
 252                         }
 253                 }
 254                 if (cee->get_stats_pending == true) {
 255                         cee->get_stats_status = BFA_STATUS_FAILED;
 256                         cee->get_stats_pending  = false;
 257                         if (cee->cbfn.get_stats_cbfn) {
 258                                 cee->cbfn.get_stats_cbfn(
 259                                         cee->cbfn.get_stats_cbarg,
 260                                         BFA_STATUS_FAILED);
 261                         }
 262                 }
 263                 if (cee->reset_stats_pending == true) {
 264                         cee->reset_stats_status = BFA_STATUS_FAILED;
 265                         cee->reset_stats_pending  = false;
 266                         if (cee->cbfn.reset_stats_cbfn) {
 267                                 cee->cbfn.reset_stats_cbfn(
 268                                         cee->cbfn.reset_stats_cbarg,
 269                                         BFA_STATUS_FAILED);
 270                         }
 271                 }
 272                 break;
 273
 274         default:
 275                 break;
 276         }
 277 }
 278
 279 /**
 280  * bfa_nw_cee_attach()
 281  *
 282  * @brief CEE module-attach API
 283  *
 284  * @param[in] cee - Pointer to the CEE module data structure
 285  *            ioc - Pointer to the ioc module data structure
 286  *            dev - Pointer to the device driver module data structure
 287  *                  The device driver specific mbox ISR functions have
 288  *                  this pointer as one of the parameters.
 289  *
 290  * @return void
 291  */
 292 void
 293 bfa_nw_cee_attach(struct bfa_cee *cee, struct bfa_ioc *ioc,
 294                 void *dev)
 295 {
 296         BUG_ON(!(cee != NULL));
 297         cee->dev = dev;
 298         cee->ioc = ioc;
 299
 300         bfa_nw_ioc_mbox_regisr(cee->ioc, BFI_MC_CEE, bfa_cee_isr, cee);
 301         bfa_q_qe_init(&cee->ioc_notify);
 302         bfa_ioc_notify_init(&cee->ioc_notify, bfa_cee_notify, cee);
 303         bfa_nw_ioc_notify_register(cee->ioc, &cee->ioc_notify);
 304 }