Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 1 | /* cnic.c: Broadcom CNIC core network driver. |
| 2 | * |
| 3 | * Copyright (c) 2006-2009 Broadcom Corporation |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation. |
| 8 | * |
| 9 | * Original skeleton written by: John(Zongxi) Chen (zongxi@broadcom.com) |
| 10 | * Modified and maintained by: Michael Chan <mchan@broadcom.com> |
| 11 | */ |
| 12 | |
| 13 | #include <linux/module.h> |
| 14 | |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/errno.h> |
| 17 | #include <linux/list.h> |
| 18 | #include <linux/slab.h> |
| 19 | #include <linux/pci.h> |
| 20 | #include <linux/init.h> |
| 21 | #include <linux/netdevice.h> |
| 22 | #include <linux/uio_driver.h> |
| 23 | #include <linux/in.h> |
| 24 | #include <linux/dma-mapping.h> |
| 25 | #include <linux/delay.h> |
| 26 | #include <linux/ethtool.h> |
| 27 | #include <linux/if_vlan.h> |
| 28 | #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) |
| 29 | #define BCM_VLAN 1 |
| 30 | #endif |
| 31 | #include <net/ip.h> |
| 32 | #include <net/tcp.h> |
| 33 | #include <net/route.h> |
| 34 | #include <net/ipv6.h> |
| 35 | #include <net/ip6_route.h> |
| 36 | #include <scsi/iscsi_if.h> |
| 37 | |
| 38 | #include "cnic_if.h" |
| 39 | #include "bnx2.h" |
Michael Chan | e251306 | 2009-10-10 13:46:58 +0000 | [diff] [blame] | 40 | #include "bnx2x_reg.h" |
| 41 | #include "bnx2x_fw_defs.h" |
| 42 | #include "bnx2x_hsi.h" |
| 43 | #include "../scsi/bnx2i/57xx_iscsi_constants.h" |
| 44 | #include "../scsi/bnx2i/57xx_iscsi_hsi.h" |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 45 | #include "cnic.h" |
| 46 | #include "cnic_defs.h" |
| 47 | |
| 48 | #define DRV_MODULE_NAME "cnic" |
| 49 | #define PFX DRV_MODULE_NAME ": " |
| 50 | |
| 51 | static char version[] __devinitdata = |
| 52 | "Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n"; |
| 53 | |
| 54 | MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) " |
| 55 | "Chen (zongxi@broadcom.com"); |
| 56 | MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver"); |
| 57 | MODULE_LICENSE("GPL"); |
| 58 | MODULE_VERSION(CNIC_MODULE_VERSION); |
| 59 | |
| 60 | static LIST_HEAD(cnic_dev_list); |
| 61 | static DEFINE_RWLOCK(cnic_dev_lock); |
| 62 | static DEFINE_MUTEX(cnic_lock); |
| 63 | |
| 64 | static struct cnic_ulp_ops *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE]; |
| 65 | |
| 66 | static int cnic_service_bnx2(void *, void *); |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 67 | static int cnic_service_bnx2x(void *, void *); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 68 | static int cnic_ctl(void *, struct cnic_ctl_info *); |
| 69 | |
| 70 | static struct cnic_ops cnic_bnx2_ops = { |
| 71 | .cnic_owner = THIS_MODULE, |
| 72 | .cnic_handler = cnic_service_bnx2, |
| 73 | .cnic_ctl = cnic_ctl, |
| 74 | }; |
| 75 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 76 | static struct cnic_ops cnic_bnx2x_ops = { |
| 77 | .cnic_owner = THIS_MODULE, |
| 78 | .cnic_handler = cnic_service_bnx2x, |
| 79 | .cnic_ctl = cnic_ctl, |
| 80 | }; |
| 81 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 82 | static void cnic_shutdown_rings(struct cnic_dev *); |
| 83 | static void cnic_init_rings(struct cnic_dev *); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 84 | static int cnic_cm_set_pg(struct cnic_sock *); |
| 85 | |
| 86 | static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode) |
| 87 | { |
| 88 | struct cnic_dev *dev = uinfo->priv; |
| 89 | struct cnic_local *cp = dev->cnic_priv; |
| 90 | |
| 91 | if (!capable(CAP_NET_ADMIN)) |
| 92 | return -EPERM; |
| 93 | |
| 94 | if (cp->uio_dev != -1) |
| 95 | return -EBUSY; |
| 96 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 97 | rtnl_lock(); |
| 98 | if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) { |
| 99 | rtnl_unlock(); |
| 100 | return -ENODEV; |
| 101 | } |
| 102 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 103 | cp->uio_dev = iminor(inode); |
| 104 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 105 | cnic_init_rings(dev); |
| 106 | rtnl_unlock(); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 107 | |
| 108 | return 0; |
| 109 | } |
| 110 | |
| 111 | static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode) |
| 112 | { |
| 113 | struct cnic_dev *dev = uinfo->priv; |
| 114 | struct cnic_local *cp = dev->cnic_priv; |
| 115 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 116 | cnic_shutdown_rings(dev); |
Michael Chan | 6ef57a0 | 2009-09-21 15:39:37 +0000 | [diff] [blame] | 117 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 118 | cp->uio_dev = -1; |
| 119 | return 0; |
| 120 | } |
| 121 | |
| 122 | static inline void cnic_hold(struct cnic_dev *dev) |
| 123 | { |
| 124 | atomic_inc(&dev->ref_count); |
| 125 | } |
| 126 | |
| 127 | static inline void cnic_put(struct cnic_dev *dev) |
| 128 | { |
| 129 | atomic_dec(&dev->ref_count); |
| 130 | } |
| 131 | |
| 132 | static inline void csk_hold(struct cnic_sock *csk) |
| 133 | { |
| 134 | atomic_inc(&csk->ref_count); |
| 135 | } |
| 136 | |
| 137 | static inline void csk_put(struct cnic_sock *csk) |
| 138 | { |
| 139 | atomic_dec(&csk->ref_count); |
| 140 | } |
| 141 | |
| 142 | static struct cnic_dev *cnic_from_netdev(struct net_device *netdev) |
| 143 | { |
| 144 | struct cnic_dev *cdev; |
| 145 | |
| 146 | read_lock(&cnic_dev_lock); |
| 147 | list_for_each_entry(cdev, &cnic_dev_list, list) { |
| 148 | if (netdev == cdev->netdev) { |
| 149 | cnic_hold(cdev); |
| 150 | read_unlock(&cnic_dev_lock); |
| 151 | return cdev; |
| 152 | } |
| 153 | } |
| 154 | read_unlock(&cnic_dev_lock); |
| 155 | return NULL; |
| 156 | } |
| 157 | |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 158 | static inline void ulp_get(struct cnic_ulp_ops *ulp_ops) |
| 159 | { |
| 160 | atomic_inc(&ulp_ops->ref_count); |
| 161 | } |
| 162 | |
| 163 | static inline void ulp_put(struct cnic_ulp_ops *ulp_ops) |
| 164 | { |
| 165 | atomic_dec(&ulp_ops->ref_count); |
| 166 | } |
| 167 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 168 | static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val) |
| 169 | { |
| 170 | struct cnic_local *cp = dev->cnic_priv; |
| 171 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 172 | struct drv_ctl_info info; |
| 173 | struct drv_ctl_io *io = &info.data.io; |
| 174 | |
| 175 | info.cmd = DRV_CTL_CTX_WR_CMD; |
| 176 | io->cid_addr = cid_addr; |
| 177 | io->offset = off; |
| 178 | io->data = val; |
| 179 | ethdev->drv_ctl(dev->netdev, &info); |
| 180 | } |
| 181 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 182 | static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr) |
| 183 | { |
| 184 | struct cnic_local *cp = dev->cnic_priv; |
| 185 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 186 | struct drv_ctl_info info; |
| 187 | struct drv_ctl_io *io = &info.data.io; |
| 188 | |
| 189 | info.cmd = DRV_CTL_CTXTBL_WR_CMD; |
| 190 | io->offset = off; |
| 191 | io->dma_addr = addr; |
| 192 | ethdev->drv_ctl(dev->netdev, &info); |
| 193 | } |
| 194 | |
| 195 | static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start) |
| 196 | { |
| 197 | struct cnic_local *cp = dev->cnic_priv; |
| 198 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 199 | struct drv_ctl_info info; |
| 200 | struct drv_ctl_l2_ring *ring = &info.data.ring; |
| 201 | |
| 202 | if (start) |
| 203 | info.cmd = DRV_CTL_START_L2_CMD; |
| 204 | else |
| 205 | info.cmd = DRV_CTL_STOP_L2_CMD; |
| 206 | |
| 207 | ring->cid = cid; |
| 208 | ring->client_id = cl_id; |
| 209 | ethdev->drv_ctl(dev->netdev, &info); |
| 210 | } |
| 211 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 212 | static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val) |
| 213 | { |
| 214 | struct cnic_local *cp = dev->cnic_priv; |
| 215 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 216 | struct drv_ctl_info info; |
| 217 | struct drv_ctl_io *io = &info.data.io; |
| 218 | |
| 219 | info.cmd = DRV_CTL_IO_WR_CMD; |
| 220 | io->offset = off; |
| 221 | io->data = val; |
| 222 | ethdev->drv_ctl(dev->netdev, &info); |
| 223 | } |
| 224 | |
| 225 | static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off) |
| 226 | { |
| 227 | struct cnic_local *cp = dev->cnic_priv; |
| 228 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 229 | struct drv_ctl_info info; |
| 230 | struct drv_ctl_io *io = &info.data.io; |
| 231 | |
| 232 | info.cmd = DRV_CTL_IO_RD_CMD; |
| 233 | io->offset = off; |
| 234 | ethdev->drv_ctl(dev->netdev, &info); |
| 235 | return io->data; |
| 236 | } |
| 237 | |
| 238 | static int cnic_in_use(struct cnic_sock *csk) |
| 239 | { |
| 240 | return test_bit(SK_F_INUSE, &csk->flags); |
| 241 | } |
| 242 | |
| 243 | static void cnic_kwq_completion(struct cnic_dev *dev, u32 count) |
| 244 | { |
| 245 | struct cnic_local *cp = dev->cnic_priv; |
| 246 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 247 | struct drv_ctl_info info; |
| 248 | |
| 249 | info.cmd = DRV_CTL_COMPLETION_CMD; |
| 250 | info.data.comp.comp_count = count; |
| 251 | ethdev->drv_ctl(dev->netdev, &info); |
| 252 | } |
| 253 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 254 | static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid) |
| 255 | { |
| 256 | u32 i; |
| 257 | |
| 258 | for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) { |
| 259 | if (cp->ctx_tbl[i].cid == cid) { |
| 260 | *l5_cid = i; |
| 261 | return 0; |
| 262 | } |
| 263 | } |
| 264 | return -EINVAL; |
| 265 | } |
| 266 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 267 | static int cnic_send_nlmsg(struct cnic_local *cp, u32 type, |
| 268 | struct cnic_sock *csk) |
| 269 | { |
| 270 | struct iscsi_path path_req; |
| 271 | char *buf = NULL; |
| 272 | u16 len = 0; |
| 273 | u32 msg_type = ISCSI_KEVENT_IF_DOWN; |
| 274 | struct cnic_ulp_ops *ulp_ops; |
| 275 | |
| 276 | if (cp->uio_dev == -1) |
| 277 | return -ENODEV; |
| 278 | |
| 279 | if (csk) { |
| 280 | len = sizeof(path_req); |
| 281 | buf = (char *) &path_req; |
| 282 | memset(&path_req, 0, len); |
| 283 | |
| 284 | msg_type = ISCSI_KEVENT_PATH_REQ; |
| 285 | path_req.handle = (u64) csk->l5_cid; |
| 286 | if (test_bit(SK_F_IPV6, &csk->flags)) { |
| 287 | memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0], |
| 288 | sizeof(struct in6_addr)); |
| 289 | path_req.ip_addr_len = 16; |
| 290 | } else { |
| 291 | memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0], |
| 292 | sizeof(struct in_addr)); |
| 293 | path_req.ip_addr_len = 4; |
| 294 | } |
| 295 | path_req.vlan_id = csk->vlan_id; |
| 296 | path_req.pmtu = csk->mtu; |
| 297 | } |
| 298 | |
| 299 | rcu_read_lock(); |
Michael Chan | 6d7760a | 2009-07-27 11:25:58 -0700 | [diff] [blame] | 300 | ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 301 | if (ulp_ops) |
| 302 | ulp_ops->iscsi_nl_send_msg(cp->dev, msg_type, buf, len); |
| 303 | rcu_read_unlock(); |
| 304 | return 0; |
| 305 | } |
| 306 | |
| 307 | static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type, |
| 308 | char *buf, u16 len) |
| 309 | { |
| 310 | int rc = -EINVAL; |
| 311 | |
| 312 | switch (msg_type) { |
| 313 | case ISCSI_UEVENT_PATH_UPDATE: { |
| 314 | struct cnic_local *cp; |
| 315 | u32 l5_cid; |
| 316 | struct cnic_sock *csk; |
| 317 | struct iscsi_path *path_resp; |
| 318 | |
| 319 | if (len < sizeof(*path_resp)) |
| 320 | break; |
| 321 | |
| 322 | path_resp = (struct iscsi_path *) buf; |
| 323 | cp = dev->cnic_priv; |
| 324 | l5_cid = (u32) path_resp->handle; |
| 325 | if (l5_cid >= MAX_CM_SK_TBL_SZ) |
| 326 | break; |
| 327 | |
| 328 | csk = &cp->csk_tbl[l5_cid]; |
| 329 | csk_hold(csk); |
| 330 | if (cnic_in_use(csk)) { |
| 331 | memcpy(csk->ha, path_resp->mac_addr, 6); |
| 332 | if (test_bit(SK_F_IPV6, &csk->flags)) |
| 333 | memcpy(&csk->src_ip[0], &path_resp->src.v6_addr, |
| 334 | sizeof(struct in6_addr)); |
| 335 | else |
| 336 | memcpy(&csk->src_ip[0], &path_resp->src.v4_addr, |
| 337 | sizeof(struct in_addr)); |
| 338 | if (is_valid_ether_addr(csk->ha)) |
| 339 | cnic_cm_set_pg(csk); |
| 340 | } |
| 341 | csk_put(csk); |
| 342 | rc = 0; |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | return rc; |
| 347 | } |
| 348 | |
| 349 | static int cnic_offld_prep(struct cnic_sock *csk) |
| 350 | { |
| 351 | if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) |
| 352 | return 0; |
| 353 | |
| 354 | if (!test_bit(SK_F_CONNECT_START, &csk->flags)) { |
| 355 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); |
| 356 | return 0; |
| 357 | } |
| 358 | |
| 359 | return 1; |
| 360 | } |
| 361 | |
| 362 | static int cnic_close_prep(struct cnic_sock *csk) |
| 363 | { |
| 364 | clear_bit(SK_F_CONNECT_START, &csk->flags); |
| 365 | smp_mb__after_clear_bit(); |
| 366 | |
| 367 | if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) { |
| 368 | while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) |
| 369 | msleep(1); |
| 370 | |
| 371 | return 1; |
| 372 | } |
| 373 | return 0; |
| 374 | } |
| 375 | |
| 376 | static int cnic_abort_prep(struct cnic_sock *csk) |
| 377 | { |
| 378 | clear_bit(SK_F_CONNECT_START, &csk->flags); |
| 379 | smp_mb__after_clear_bit(); |
| 380 | |
| 381 | while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) |
| 382 | msleep(1); |
| 383 | |
| 384 | if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) { |
| 385 | csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP; |
| 386 | return 1; |
| 387 | } |
| 388 | |
| 389 | return 0; |
| 390 | } |
| 391 | |
Michael Chan | 6d7760a | 2009-07-27 11:25:58 -0700 | [diff] [blame] | 392 | static void cnic_uio_stop(void) |
| 393 | { |
| 394 | struct cnic_dev *dev; |
| 395 | |
| 396 | read_lock(&cnic_dev_lock); |
| 397 | list_for_each_entry(dev, &cnic_dev_list, list) { |
| 398 | struct cnic_local *cp = dev->cnic_priv; |
| 399 | |
| 400 | if (cp->cnic_uinfo) |
| 401 | cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL); |
| 402 | } |
| 403 | read_unlock(&cnic_dev_lock); |
| 404 | } |
| 405 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 406 | int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops) |
| 407 | { |
| 408 | struct cnic_dev *dev; |
| 409 | |
| 410 | if (ulp_type >= MAX_CNIC_ULP_TYPE) { |
| 411 | printk(KERN_ERR PFX "cnic_register_driver: Bad type %d\n", |
| 412 | ulp_type); |
| 413 | return -EINVAL; |
| 414 | } |
| 415 | mutex_lock(&cnic_lock); |
| 416 | if (cnic_ulp_tbl[ulp_type]) { |
| 417 | printk(KERN_ERR PFX "cnic_register_driver: Type %d has already " |
| 418 | "been registered\n", ulp_type); |
| 419 | mutex_unlock(&cnic_lock); |
| 420 | return -EBUSY; |
| 421 | } |
| 422 | |
| 423 | read_lock(&cnic_dev_lock); |
| 424 | list_for_each_entry(dev, &cnic_dev_list, list) { |
| 425 | struct cnic_local *cp = dev->cnic_priv; |
| 426 | |
| 427 | clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]); |
| 428 | } |
| 429 | read_unlock(&cnic_dev_lock); |
| 430 | |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 431 | atomic_set(&ulp_ops->ref_count, 0); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 432 | rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops); |
| 433 | mutex_unlock(&cnic_lock); |
| 434 | |
| 435 | /* Prevent race conditions with netdev_event */ |
| 436 | rtnl_lock(); |
| 437 | read_lock(&cnic_dev_lock); |
| 438 | list_for_each_entry(dev, &cnic_dev_list, list) { |
| 439 | struct cnic_local *cp = dev->cnic_priv; |
| 440 | |
| 441 | if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type])) |
| 442 | ulp_ops->cnic_init(dev); |
| 443 | } |
| 444 | read_unlock(&cnic_dev_lock); |
| 445 | rtnl_unlock(); |
| 446 | |
| 447 | return 0; |
| 448 | } |
| 449 | |
| 450 | int cnic_unregister_driver(int ulp_type) |
| 451 | { |
| 452 | struct cnic_dev *dev; |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 453 | struct cnic_ulp_ops *ulp_ops; |
| 454 | int i = 0; |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 455 | |
| 456 | if (ulp_type >= MAX_CNIC_ULP_TYPE) { |
| 457 | printk(KERN_ERR PFX "cnic_unregister_driver: Bad type %d\n", |
| 458 | ulp_type); |
| 459 | return -EINVAL; |
| 460 | } |
| 461 | mutex_lock(&cnic_lock); |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 462 | ulp_ops = cnic_ulp_tbl[ulp_type]; |
| 463 | if (!ulp_ops) { |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 464 | printk(KERN_ERR PFX "cnic_unregister_driver: Type %d has not " |
| 465 | "been registered\n", ulp_type); |
| 466 | goto out_unlock; |
| 467 | } |
| 468 | read_lock(&cnic_dev_lock); |
| 469 | list_for_each_entry(dev, &cnic_dev_list, list) { |
| 470 | struct cnic_local *cp = dev->cnic_priv; |
| 471 | |
| 472 | if (rcu_dereference(cp->ulp_ops[ulp_type])) { |
| 473 | printk(KERN_ERR PFX "cnic_unregister_driver: Type %d " |
| 474 | "still has devices registered\n", ulp_type); |
| 475 | read_unlock(&cnic_dev_lock); |
| 476 | goto out_unlock; |
| 477 | } |
| 478 | } |
| 479 | read_unlock(&cnic_dev_lock); |
| 480 | |
Michael Chan | 6d7760a | 2009-07-27 11:25:58 -0700 | [diff] [blame] | 481 | if (ulp_type == CNIC_ULP_ISCSI) |
| 482 | cnic_uio_stop(); |
| 483 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 484 | rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL); |
| 485 | |
| 486 | mutex_unlock(&cnic_lock); |
| 487 | synchronize_rcu(); |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 488 | while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) { |
| 489 | msleep(100); |
| 490 | i++; |
| 491 | } |
| 492 | |
| 493 | if (atomic_read(&ulp_ops->ref_count) != 0) |
| 494 | printk(KERN_WARNING PFX "%s: Failed waiting for ref count to go" |
| 495 | " to zero.\n", dev->netdev->name); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 496 | return 0; |
| 497 | |
| 498 | out_unlock: |
| 499 | mutex_unlock(&cnic_lock); |
| 500 | return -EINVAL; |
| 501 | } |
| 502 | |
| 503 | static int cnic_start_hw(struct cnic_dev *); |
| 504 | static void cnic_stop_hw(struct cnic_dev *); |
| 505 | |
| 506 | static int cnic_register_device(struct cnic_dev *dev, int ulp_type, |
| 507 | void *ulp_ctx) |
| 508 | { |
| 509 | struct cnic_local *cp = dev->cnic_priv; |
| 510 | struct cnic_ulp_ops *ulp_ops; |
| 511 | |
| 512 | if (ulp_type >= MAX_CNIC_ULP_TYPE) { |
| 513 | printk(KERN_ERR PFX "cnic_register_device: Bad type %d\n", |
| 514 | ulp_type); |
| 515 | return -EINVAL; |
| 516 | } |
| 517 | mutex_lock(&cnic_lock); |
| 518 | if (cnic_ulp_tbl[ulp_type] == NULL) { |
| 519 | printk(KERN_ERR PFX "cnic_register_device: Driver with type %d " |
| 520 | "has not been registered\n", ulp_type); |
| 521 | mutex_unlock(&cnic_lock); |
| 522 | return -EAGAIN; |
| 523 | } |
| 524 | if (rcu_dereference(cp->ulp_ops[ulp_type])) { |
| 525 | printk(KERN_ERR PFX "cnic_register_device: Type %d has already " |
| 526 | "been registered to this device\n", ulp_type); |
| 527 | mutex_unlock(&cnic_lock); |
| 528 | return -EBUSY; |
| 529 | } |
| 530 | |
| 531 | clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]); |
| 532 | cp->ulp_handle[ulp_type] = ulp_ctx; |
| 533 | ulp_ops = cnic_ulp_tbl[ulp_type]; |
| 534 | rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops); |
| 535 | cnic_hold(dev); |
| 536 | |
| 537 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) |
| 538 | if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type])) |
| 539 | ulp_ops->cnic_start(cp->ulp_handle[ulp_type]); |
| 540 | |
| 541 | mutex_unlock(&cnic_lock); |
| 542 | |
| 543 | return 0; |
| 544 | |
| 545 | } |
| 546 | EXPORT_SYMBOL(cnic_register_driver); |
| 547 | |
| 548 | static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type) |
| 549 | { |
| 550 | struct cnic_local *cp = dev->cnic_priv; |
Michael Chan | 681dbd7 | 2009-08-14 15:49:46 +0000 | [diff] [blame] | 551 | int i = 0; |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 552 | |
| 553 | if (ulp_type >= MAX_CNIC_ULP_TYPE) { |
| 554 | printk(KERN_ERR PFX "cnic_unregister_device: Bad type %d\n", |
| 555 | ulp_type); |
| 556 | return -EINVAL; |
| 557 | } |
| 558 | mutex_lock(&cnic_lock); |
| 559 | if (rcu_dereference(cp->ulp_ops[ulp_type])) { |
| 560 | rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL); |
| 561 | cnic_put(dev); |
| 562 | } else { |
| 563 | printk(KERN_ERR PFX "cnic_unregister_device: device not " |
| 564 | "registered to this ulp type %d\n", ulp_type); |
| 565 | mutex_unlock(&cnic_lock); |
| 566 | return -EINVAL; |
| 567 | } |
| 568 | mutex_unlock(&cnic_lock); |
| 569 | |
| 570 | synchronize_rcu(); |
| 571 | |
Michael Chan | 681dbd7 | 2009-08-14 15:49:46 +0000 | [diff] [blame] | 572 | while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) && |
| 573 | i < 20) { |
| 574 | msleep(100); |
| 575 | i++; |
| 576 | } |
| 577 | if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type])) |
| 578 | printk(KERN_WARNING PFX "%s: Failed waiting for ULP up call" |
| 579 | " to complete.\n", dev->netdev->name); |
| 580 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 581 | return 0; |
| 582 | } |
| 583 | EXPORT_SYMBOL(cnic_unregister_driver); |
| 584 | |
| 585 | static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id) |
| 586 | { |
| 587 | id_tbl->start = start_id; |
| 588 | id_tbl->max = size; |
| 589 | id_tbl->next = 0; |
| 590 | spin_lock_init(&id_tbl->lock); |
| 591 | id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL); |
| 592 | if (!id_tbl->table) |
| 593 | return -ENOMEM; |
| 594 | |
| 595 | return 0; |
| 596 | } |
| 597 | |
| 598 | static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl) |
| 599 | { |
| 600 | kfree(id_tbl->table); |
| 601 | id_tbl->table = NULL; |
| 602 | } |
| 603 | |
| 604 | static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id) |
| 605 | { |
| 606 | int ret = -1; |
| 607 | |
| 608 | id -= id_tbl->start; |
| 609 | if (id >= id_tbl->max) |
| 610 | return ret; |
| 611 | |
| 612 | spin_lock(&id_tbl->lock); |
| 613 | if (!test_bit(id, id_tbl->table)) { |
| 614 | set_bit(id, id_tbl->table); |
| 615 | ret = 0; |
| 616 | } |
| 617 | spin_unlock(&id_tbl->lock); |
| 618 | return ret; |
| 619 | } |
| 620 | |
| 621 | /* Returns -1 if not successful */ |
| 622 | static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl) |
| 623 | { |
| 624 | u32 id; |
| 625 | |
| 626 | spin_lock(&id_tbl->lock); |
| 627 | id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next); |
| 628 | if (id >= id_tbl->max) { |
| 629 | id = -1; |
| 630 | if (id_tbl->next != 0) { |
| 631 | id = find_first_zero_bit(id_tbl->table, id_tbl->next); |
| 632 | if (id >= id_tbl->next) |
| 633 | id = -1; |
| 634 | } |
| 635 | } |
| 636 | |
| 637 | if (id < id_tbl->max) { |
| 638 | set_bit(id, id_tbl->table); |
| 639 | id_tbl->next = (id + 1) & (id_tbl->max - 1); |
| 640 | id += id_tbl->start; |
| 641 | } |
| 642 | |
| 643 | spin_unlock(&id_tbl->lock); |
| 644 | |
| 645 | return id; |
| 646 | } |
| 647 | |
| 648 | static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id) |
| 649 | { |
| 650 | if (id == -1) |
| 651 | return; |
| 652 | |
| 653 | id -= id_tbl->start; |
| 654 | if (id >= id_tbl->max) |
| 655 | return; |
| 656 | |
| 657 | clear_bit(id, id_tbl->table); |
| 658 | } |
| 659 | |
| 660 | static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma) |
| 661 | { |
| 662 | int i; |
| 663 | |
| 664 | if (!dma->pg_arr) |
| 665 | return; |
| 666 | |
| 667 | for (i = 0; i < dma->num_pages; i++) { |
| 668 | if (dma->pg_arr[i]) { |
| 669 | pci_free_consistent(dev->pcidev, BCM_PAGE_SIZE, |
| 670 | dma->pg_arr[i], dma->pg_map_arr[i]); |
| 671 | dma->pg_arr[i] = NULL; |
| 672 | } |
| 673 | } |
| 674 | if (dma->pgtbl) { |
| 675 | pci_free_consistent(dev->pcidev, dma->pgtbl_size, |
| 676 | dma->pgtbl, dma->pgtbl_map); |
| 677 | dma->pgtbl = NULL; |
| 678 | } |
| 679 | kfree(dma->pg_arr); |
| 680 | dma->pg_arr = NULL; |
| 681 | dma->num_pages = 0; |
| 682 | } |
| 683 | |
| 684 | static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma) |
| 685 | { |
| 686 | int i; |
| 687 | u32 *page_table = dma->pgtbl; |
| 688 | |
| 689 | for (i = 0; i < dma->num_pages; i++) { |
| 690 | /* Each entry needs to be in big endian format. */ |
| 691 | *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32); |
| 692 | page_table++; |
| 693 | *page_table = (u32) dma->pg_map_arr[i]; |
| 694 | page_table++; |
| 695 | } |
| 696 | } |
| 697 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 698 | static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma) |
| 699 | { |
| 700 | int i; |
| 701 | u32 *page_table = dma->pgtbl; |
| 702 | |
| 703 | for (i = 0; i < dma->num_pages; i++) { |
| 704 | /* Each entry needs to be in little endian format. */ |
| 705 | *page_table = dma->pg_map_arr[i] & 0xffffffff; |
| 706 | page_table++; |
| 707 | *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32); |
| 708 | page_table++; |
| 709 | } |
| 710 | } |
| 711 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 712 | static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma, |
| 713 | int pages, int use_pg_tbl) |
| 714 | { |
| 715 | int i, size; |
| 716 | struct cnic_local *cp = dev->cnic_priv; |
| 717 | |
| 718 | size = pages * (sizeof(void *) + sizeof(dma_addr_t)); |
| 719 | dma->pg_arr = kzalloc(size, GFP_ATOMIC); |
| 720 | if (dma->pg_arr == NULL) |
| 721 | return -ENOMEM; |
| 722 | |
| 723 | dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages); |
| 724 | dma->num_pages = pages; |
| 725 | |
| 726 | for (i = 0; i < pages; i++) { |
| 727 | dma->pg_arr[i] = pci_alloc_consistent(dev->pcidev, |
| 728 | BCM_PAGE_SIZE, |
| 729 | &dma->pg_map_arr[i]); |
| 730 | if (dma->pg_arr[i] == NULL) |
| 731 | goto error; |
| 732 | } |
| 733 | if (!use_pg_tbl) |
| 734 | return 0; |
| 735 | |
| 736 | dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) & |
| 737 | ~(BCM_PAGE_SIZE - 1); |
| 738 | dma->pgtbl = pci_alloc_consistent(dev->pcidev, dma->pgtbl_size, |
| 739 | &dma->pgtbl_map); |
| 740 | if (dma->pgtbl == NULL) |
| 741 | goto error; |
| 742 | |
| 743 | cp->setup_pgtbl(dev, dma); |
| 744 | |
| 745 | return 0; |
| 746 | |
| 747 | error: |
| 748 | cnic_free_dma(dev, dma); |
| 749 | return -ENOMEM; |
| 750 | } |
| 751 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 752 | static void cnic_free_context(struct cnic_dev *dev) |
| 753 | { |
| 754 | struct cnic_local *cp = dev->cnic_priv; |
| 755 | int i; |
| 756 | |
| 757 | for (i = 0; i < cp->ctx_blks; i++) { |
| 758 | if (cp->ctx_arr[i].ctx) { |
| 759 | pci_free_consistent(dev->pcidev, cp->ctx_blk_size, |
| 760 | cp->ctx_arr[i].ctx, |
| 761 | cp->ctx_arr[i].mapping); |
| 762 | cp->ctx_arr[i].ctx = NULL; |
| 763 | } |
| 764 | } |
| 765 | } |
| 766 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 767 | static void cnic_free_resc(struct cnic_dev *dev) |
| 768 | { |
| 769 | struct cnic_local *cp = dev->cnic_priv; |
| 770 | int i = 0; |
| 771 | |
| 772 | if (cp->cnic_uinfo) { |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 773 | while (cp->uio_dev != -1 && i < 15) { |
| 774 | msleep(100); |
| 775 | i++; |
| 776 | } |
| 777 | uio_unregister_device(cp->cnic_uinfo); |
| 778 | kfree(cp->cnic_uinfo); |
| 779 | cp->cnic_uinfo = NULL; |
| 780 | } |
| 781 | |
| 782 | if (cp->l2_buf) { |
| 783 | pci_free_consistent(dev->pcidev, cp->l2_buf_size, |
| 784 | cp->l2_buf, cp->l2_buf_map); |
| 785 | cp->l2_buf = NULL; |
| 786 | } |
| 787 | |
| 788 | if (cp->l2_ring) { |
| 789 | pci_free_consistent(dev->pcidev, cp->l2_ring_size, |
| 790 | cp->l2_ring, cp->l2_ring_map); |
| 791 | cp->l2_ring = NULL; |
| 792 | } |
| 793 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 794 | cnic_free_context(dev); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 795 | kfree(cp->ctx_arr); |
| 796 | cp->ctx_arr = NULL; |
| 797 | cp->ctx_blks = 0; |
| 798 | |
| 799 | cnic_free_dma(dev, &cp->gbl_buf_info); |
| 800 | cnic_free_dma(dev, &cp->conn_buf_info); |
| 801 | cnic_free_dma(dev, &cp->kwq_info); |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 802 | cnic_free_dma(dev, &cp->kwq_16_data_info); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 803 | cnic_free_dma(dev, &cp->kcq_info); |
| 804 | kfree(cp->iscsi_tbl); |
| 805 | cp->iscsi_tbl = NULL; |
| 806 | kfree(cp->ctx_tbl); |
| 807 | cp->ctx_tbl = NULL; |
| 808 | |
| 809 | cnic_free_id_tbl(&cp->cid_tbl); |
| 810 | } |
| 811 | |
| 812 | static int cnic_alloc_context(struct cnic_dev *dev) |
| 813 | { |
| 814 | struct cnic_local *cp = dev->cnic_priv; |
| 815 | |
| 816 | if (CHIP_NUM(cp) == CHIP_NUM_5709) { |
| 817 | int i, k, arr_size; |
| 818 | |
| 819 | cp->ctx_blk_size = BCM_PAGE_SIZE; |
| 820 | cp->cids_per_blk = BCM_PAGE_SIZE / 128; |
| 821 | arr_size = BNX2_MAX_CID / cp->cids_per_blk * |
| 822 | sizeof(struct cnic_ctx); |
| 823 | cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL); |
| 824 | if (cp->ctx_arr == NULL) |
| 825 | return -ENOMEM; |
| 826 | |
| 827 | k = 0; |
| 828 | for (i = 0; i < 2; i++) { |
| 829 | u32 j, reg, off, lo, hi; |
| 830 | |
| 831 | if (i == 0) |
| 832 | off = BNX2_PG_CTX_MAP; |
| 833 | else |
| 834 | off = BNX2_ISCSI_CTX_MAP; |
| 835 | |
| 836 | reg = cnic_reg_rd_ind(dev, off); |
| 837 | lo = reg >> 16; |
| 838 | hi = reg & 0xffff; |
| 839 | for (j = lo; j < hi; j += cp->cids_per_blk, k++) |
| 840 | cp->ctx_arr[k].cid = j; |
| 841 | } |
| 842 | |
| 843 | cp->ctx_blks = k; |
| 844 | if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) { |
| 845 | cp->ctx_blks = 0; |
| 846 | return -ENOMEM; |
| 847 | } |
| 848 | |
| 849 | for (i = 0; i < cp->ctx_blks; i++) { |
| 850 | cp->ctx_arr[i].ctx = |
| 851 | pci_alloc_consistent(dev->pcidev, BCM_PAGE_SIZE, |
| 852 | &cp->ctx_arr[i].mapping); |
| 853 | if (cp->ctx_arr[i].ctx == NULL) |
| 854 | return -ENOMEM; |
| 855 | } |
| 856 | } |
| 857 | return 0; |
| 858 | } |
| 859 | |
Michael Chan | ec0248e | 2009-08-26 09:49:22 +0000 | [diff] [blame] | 860 | static int cnic_alloc_l2_rings(struct cnic_dev *dev, int pages) |
| 861 | { |
| 862 | struct cnic_local *cp = dev->cnic_priv; |
| 863 | |
| 864 | cp->l2_ring_size = pages * BCM_PAGE_SIZE; |
| 865 | cp->l2_ring = pci_alloc_consistent(dev->pcidev, cp->l2_ring_size, |
| 866 | &cp->l2_ring_map); |
| 867 | if (!cp->l2_ring) |
| 868 | return -ENOMEM; |
| 869 | |
| 870 | cp->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size; |
| 871 | cp->l2_buf_size = PAGE_ALIGN(cp->l2_buf_size); |
| 872 | cp->l2_buf = pci_alloc_consistent(dev->pcidev, cp->l2_buf_size, |
| 873 | &cp->l2_buf_map); |
| 874 | if (!cp->l2_buf) |
| 875 | return -ENOMEM; |
| 876 | |
| 877 | return 0; |
| 878 | } |
| 879 | |
Michael Chan | 5e9b2db | 2009-08-26 09:49:23 +0000 | [diff] [blame] | 880 | static int cnic_alloc_uio(struct cnic_dev *dev) { |
| 881 | struct cnic_local *cp = dev->cnic_priv; |
| 882 | struct uio_info *uinfo; |
| 883 | int ret; |
| 884 | |
| 885 | uinfo = kzalloc(sizeof(*uinfo), GFP_ATOMIC); |
| 886 | if (!uinfo) |
| 887 | return -ENOMEM; |
| 888 | |
| 889 | uinfo->mem[0].addr = dev->netdev->base_addr; |
| 890 | uinfo->mem[0].internal_addr = dev->regview; |
| 891 | uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start; |
| 892 | uinfo->mem[0].memtype = UIO_MEM_PHYS; |
| 893 | |
Michael Chan | 5e9b2db | 2009-08-26 09:49:23 +0000 | [diff] [blame] | 894 | if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) { |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 895 | uinfo->mem[1].addr = (unsigned long) cp->status_blk & PAGE_MASK; |
Michael Chan | 5e9b2db | 2009-08-26 09:49:23 +0000 | [diff] [blame] | 896 | if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) |
| 897 | uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9; |
| 898 | else |
| 899 | uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE; |
| 900 | |
| 901 | uinfo->name = "bnx2_cnic"; |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 902 | } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { |
| 903 | uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk & |
| 904 | PAGE_MASK; |
| 905 | uinfo->mem[1].size = sizeof(struct host_def_status_block); |
| 906 | |
| 907 | uinfo->name = "bnx2x_cnic"; |
Michael Chan | 5e9b2db | 2009-08-26 09:49:23 +0000 | [diff] [blame] | 908 | } |
| 909 | |
| 910 | uinfo->mem[1].memtype = UIO_MEM_LOGICAL; |
| 911 | |
| 912 | uinfo->mem[2].addr = (unsigned long) cp->l2_ring; |
| 913 | uinfo->mem[2].size = cp->l2_ring_size; |
| 914 | uinfo->mem[2].memtype = UIO_MEM_LOGICAL; |
| 915 | |
| 916 | uinfo->mem[3].addr = (unsigned long) cp->l2_buf; |
| 917 | uinfo->mem[3].size = cp->l2_buf_size; |
| 918 | uinfo->mem[3].memtype = UIO_MEM_LOGICAL; |
| 919 | |
| 920 | uinfo->version = CNIC_MODULE_VERSION; |
| 921 | uinfo->irq = UIO_IRQ_CUSTOM; |
| 922 | |
| 923 | uinfo->open = cnic_uio_open; |
| 924 | uinfo->release = cnic_uio_close; |
| 925 | |
| 926 | uinfo->priv = dev; |
| 927 | |
| 928 | ret = uio_register_device(&dev->pcidev->dev, uinfo); |
| 929 | if (ret) { |
| 930 | kfree(uinfo); |
| 931 | return ret; |
| 932 | } |
| 933 | |
| 934 | cp->cnic_uinfo = uinfo; |
| 935 | return 0; |
| 936 | } |
| 937 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 938 | static int cnic_alloc_bnx2_resc(struct cnic_dev *dev) |
| 939 | { |
| 940 | struct cnic_local *cp = dev->cnic_priv; |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 941 | int ret; |
| 942 | |
| 943 | ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1); |
| 944 | if (ret) |
| 945 | goto error; |
| 946 | cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr; |
| 947 | |
| 948 | ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 1); |
| 949 | if (ret) |
| 950 | goto error; |
| 951 | cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr; |
| 952 | |
| 953 | ret = cnic_alloc_context(dev); |
| 954 | if (ret) |
| 955 | goto error; |
| 956 | |
Michael Chan | ec0248e | 2009-08-26 09:49:22 +0000 | [diff] [blame] | 957 | ret = cnic_alloc_l2_rings(dev, 2); |
| 958 | if (ret) |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 959 | goto error; |
| 960 | |
Michael Chan | 5e9b2db | 2009-08-26 09:49:23 +0000 | [diff] [blame] | 961 | ret = cnic_alloc_uio(dev); |
| 962 | if (ret) |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 963 | goto error; |
| 964 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 965 | return 0; |
| 966 | |
| 967 | error: |
| 968 | cnic_free_resc(dev); |
| 969 | return ret; |
| 970 | } |
| 971 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 972 | static int cnic_alloc_bnx2x_context(struct cnic_dev *dev) |
| 973 | { |
| 974 | struct cnic_local *cp = dev->cnic_priv; |
| 975 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 976 | int ctx_blk_size = cp->ethdev->ctx_blk_size; |
| 977 | int total_mem, blks, i, cid_space; |
| 978 | |
| 979 | if (BNX2X_ISCSI_START_CID < ethdev->starting_cid) |
| 980 | return -EINVAL; |
| 981 | |
| 982 | cid_space = MAX_ISCSI_TBL_SZ + |
| 983 | (BNX2X_ISCSI_START_CID - ethdev->starting_cid); |
| 984 | |
| 985 | total_mem = BNX2X_CONTEXT_MEM_SIZE * cid_space; |
| 986 | blks = total_mem / ctx_blk_size; |
| 987 | if (total_mem % ctx_blk_size) |
| 988 | blks++; |
| 989 | |
| 990 | if (blks > cp->ethdev->ctx_tbl_len) |
| 991 | return -ENOMEM; |
| 992 | |
| 993 | cp->ctx_arr = kzalloc(blks * sizeof(struct cnic_ctx), GFP_KERNEL); |
| 994 | if (cp->ctx_arr == NULL) |
| 995 | return -ENOMEM; |
| 996 | |
| 997 | cp->ctx_blks = blks; |
| 998 | cp->ctx_blk_size = ctx_blk_size; |
| 999 | if (BNX2X_CHIP_IS_E1H(cp->chip_id)) |
| 1000 | cp->ctx_align = 0; |
| 1001 | else |
| 1002 | cp->ctx_align = ctx_blk_size; |
| 1003 | |
| 1004 | cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE; |
| 1005 | |
| 1006 | for (i = 0; i < blks; i++) { |
| 1007 | cp->ctx_arr[i].ctx = |
| 1008 | pci_alloc_consistent(dev->pcidev, cp->ctx_blk_size, |
| 1009 | &cp->ctx_arr[i].mapping); |
| 1010 | if (cp->ctx_arr[i].ctx == NULL) |
| 1011 | return -ENOMEM; |
| 1012 | |
| 1013 | if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) { |
| 1014 | if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) { |
| 1015 | cnic_free_context(dev); |
| 1016 | cp->ctx_blk_size += cp->ctx_align; |
| 1017 | i = -1; |
| 1018 | continue; |
| 1019 | } |
| 1020 | } |
| 1021 | } |
| 1022 | return 0; |
| 1023 | } |
| 1024 | |
| 1025 | static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev) |
| 1026 | { |
| 1027 | struct cnic_local *cp = dev->cnic_priv; |
| 1028 | int i, j, n, ret, pages; |
| 1029 | struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info; |
| 1030 | |
| 1031 | cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ, |
| 1032 | GFP_KERNEL); |
| 1033 | if (!cp->iscsi_tbl) |
| 1034 | goto error; |
| 1035 | |
| 1036 | cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) * |
| 1037 | MAX_CNIC_L5_CONTEXT, GFP_KERNEL); |
| 1038 | if (!cp->ctx_tbl) |
| 1039 | goto error; |
| 1040 | |
| 1041 | for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) { |
| 1042 | cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i]; |
| 1043 | cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI; |
| 1044 | } |
| 1045 | |
| 1046 | pages = PAGE_ALIGN(MAX_CNIC_L5_CONTEXT * CNIC_KWQ16_DATA_SIZE) / |
| 1047 | PAGE_SIZE; |
| 1048 | |
| 1049 | ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0); |
| 1050 | if (ret) |
| 1051 | return -ENOMEM; |
| 1052 | |
| 1053 | n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE; |
| 1054 | for (i = 0, j = 0; i < MAX_ISCSI_TBL_SZ; i++) { |
| 1055 | long off = CNIC_KWQ16_DATA_SIZE * (i % n); |
| 1056 | |
| 1057 | cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off; |
| 1058 | cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] + |
| 1059 | off; |
| 1060 | |
| 1061 | if ((i % n) == (n - 1)) |
| 1062 | j++; |
| 1063 | } |
| 1064 | |
| 1065 | ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 0); |
| 1066 | if (ret) |
| 1067 | goto error; |
| 1068 | cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr; |
| 1069 | |
| 1070 | for (i = 0; i < KCQ_PAGE_CNT; i++) { |
| 1071 | struct bnx2x_bd_chain_next *next = |
| 1072 | (struct bnx2x_bd_chain_next *) |
| 1073 | &cp->kcq[i][MAX_KCQE_CNT]; |
| 1074 | int j = i + 1; |
| 1075 | |
| 1076 | if (j >= KCQ_PAGE_CNT) |
| 1077 | j = 0; |
| 1078 | next->addr_hi = (u64) cp->kcq_info.pg_map_arr[j] >> 32; |
| 1079 | next->addr_lo = cp->kcq_info.pg_map_arr[j] & 0xffffffff; |
| 1080 | } |
| 1081 | |
| 1082 | pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS * |
| 1083 | BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE; |
| 1084 | ret = cnic_alloc_dma(dev, &cp->conn_buf_info, pages, 1); |
| 1085 | if (ret) |
| 1086 | goto error; |
| 1087 | |
| 1088 | pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE; |
| 1089 | ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0); |
| 1090 | if (ret) |
| 1091 | goto error; |
| 1092 | |
| 1093 | ret = cnic_alloc_bnx2x_context(dev); |
| 1094 | if (ret) |
| 1095 | goto error; |
| 1096 | |
| 1097 | cp->bnx2x_status_blk = cp->status_blk; |
| 1098 | cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk; |
| 1099 | |
| 1100 | cp->l2_rx_ring_size = 15; |
| 1101 | |
| 1102 | ret = cnic_alloc_l2_rings(dev, 4); |
| 1103 | if (ret) |
| 1104 | goto error; |
| 1105 | |
| 1106 | ret = cnic_alloc_uio(dev); |
| 1107 | if (ret) |
| 1108 | goto error; |
| 1109 | |
| 1110 | return 0; |
| 1111 | |
| 1112 | error: |
| 1113 | cnic_free_resc(dev); |
| 1114 | return -ENOMEM; |
| 1115 | } |
| 1116 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 1117 | static inline u32 cnic_kwq_avail(struct cnic_local *cp) |
| 1118 | { |
| 1119 | return cp->max_kwq_idx - |
| 1120 | ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx); |
| 1121 | } |
| 1122 | |
| 1123 | static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[], |
| 1124 | u32 num_wqes) |
| 1125 | { |
| 1126 | struct cnic_local *cp = dev->cnic_priv; |
| 1127 | struct kwqe *prod_qe; |
| 1128 | u16 prod, sw_prod, i; |
| 1129 | |
| 1130 | if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) |
| 1131 | return -EAGAIN; /* bnx2 is down */ |
| 1132 | |
| 1133 | spin_lock_bh(&cp->cnic_ulp_lock); |
| 1134 | if (num_wqes > cnic_kwq_avail(cp) && |
| 1135 | !(cp->cnic_local_flags & CNIC_LCL_FL_KWQ_INIT)) { |
| 1136 | spin_unlock_bh(&cp->cnic_ulp_lock); |
| 1137 | return -EAGAIN; |
| 1138 | } |
| 1139 | |
| 1140 | cp->cnic_local_flags &= ~CNIC_LCL_FL_KWQ_INIT; |
| 1141 | |
| 1142 | prod = cp->kwq_prod_idx; |
| 1143 | sw_prod = prod & MAX_KWQ_IDX; |
| 1144 | for (i = 0; i < num_wqes; i++) { |
| 1145 | prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)]; |
| 1146 | memcpy(prod_qe, wqes[i], sizeof(struct kwqe)); |
| 1147 | prod++; |
| 1148 | sw_prod = prod & MAX_KWQ_IDX; |
| 1149 | } |
| 1150 | cp->kwq_prod_idx = prod; |
| 1151 | |
| 1152 | CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx); |
| 1153 | |
| 1154 | spin_unlock_bh(&cp->cnic_ulp_lock); |
| 1155 | return 0; |
| 1156 | } |
| 1157 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 1158 | static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid, |
| 1159 | union l5cm_specific_data *l5_data) |
| 1160 | { |
| 1161 | struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; |
| 1162 | dma_addr_t map; |
| 1163 | |
| 1164 | map = ctx->kwqe_data_mapping; |
| 1165 | l5_data->phy_address.lo = (u64) map & 0xffffffff; |
| 1166 | l5_data->phy_address.hi = (u64) map >> 32; |
| 1167 | return ctx->kwqe_data; |
| 1168 | } |
| 1169 | |
| 1170 | static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid, |
| 1171 | u32 type, union l5cm_specific_data *l5_data) |
| 1172 | { |
| 1173 | struct cnic_local *cp = dev->cnic_priv; |
| 1174 | struct l5cm_spe kwqe; |
| 1175 | struct kwqe_16 *kwq[1]; |
| 1176 | int ret; |
| 1177 | |
| 1178 | kwqe.hdr.conn_and_cmd_data = |
| 1179 | cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) | |
| 1180 | BNX2X_HW_CID(cid, cp->func))); |
| 1181 | kwqe.hdr.type = cpu_to_le16(type); |
| 1182 | kwqe.hdr.reserved = 0; |
| 1183 | kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo); |
| 1184 | kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi); |
| 1185 | |
| 1186 | kwq[0] = (struct kwqe_16 *) &kwqe; |
| 1187 | |
| 1188 | spin_lock_bh(&cp->cnic_ulp_lock); |
| 1189 | ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1); |
| 1190 | spin_unlock_bh(&cp->cnic_ulp_lock); |
| 1191 | |
| 1192 | if (ret == 1) |
| 1193 | return 0; |
| 1194 | |
| 1195 | return -EBUSY; |
| 1196 | } |
| 1197 | |
| 1198 | static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type, |
| 1199 | struct kcqe *cqes[], u32 num_cqes) |
| 1200 | { |
| 1201 | struct cnic_local *cp = dev->cnic_priv; |
| 1202 | struct cnic_ulp_ops *ulp_ops; |
| 1203 | |
| 1204 | rcu_read_lock(); |
| 1205 | ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]); |
| 1206 | if (likely(ulp_ops)) { |
| 1207 | ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type], |
| 1208 | cqes, num_cqes); |
| 1209 | } |
| 1210 | rcu_read_unlock(); |
| 1211 | } |
| 1212 | |
| 1213 | static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe) |
| 1214 | { |
| 1215 | struct cnic_local *cp = dev->cnic_priv; |
| 1216 | struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe; |
| 1217 | int func = cp->func, pages; |
| 1218 | int hq_bds; |
| 1219 | |
| 1220 | cp->num_iscsi_tasks = req1->num_tasks_per_conn; |
| 1221 | cp->num_ccells = req1->num_ccells_per_conn; |
| 1222 | cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE * |
| 1223 | cp->num_iscsi_tasks; |
| 1224 | cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS * |
| 1225 | BNX2X_ISCSI_R2TQE_SIZE; |
| 1226 | cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE; |
| 1227 | pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE; |
| 1228 | hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE); |
| 1229 | cp->num_cqs = req1->num_cqs; |
| 1230 | |
| 1231 | if (!dev->max_iscsi_conn) |
| 1232 | return 0; |
| 1233 | |
| 1234 | /* init Tstorm RAM */ |
| 1235 | CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(func), |
| 1236 | req1->rq_num_wqes); |
| 1237 | CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(func), |
| 1238 | PAGE_SIZE); |
| 1239 | CNIC_WR8(dev, BAR_TSTRORM_INTMEM + |
| 1240 | TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT); |
| 1241 | CNIC_WR16(dev, BAR_TSTRORM_INTMEM + |
| 1242 | TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func), |
| 1243 | req1->num_tasks_per_conn); |
| 1244 | |
| 1245 | /* init Ustorm RAM */ |
| 1246 | CNIC_WR16(dev, BAR_USTRORM_INTMEM + |
| 1247 | USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(func), |
| 1248 | req1->rq_buffer_size); |
| 1249 | CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(func), |
| 1250 | PAGE_SIZE); |
| 1251 | CNIC_WR8(dev, BAR_USTRORM_INTMEM + |
| 1252 | USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT); |
| 1253 | CNIC_WR16(dev, BAR_USTRORM_INTMEM + |
| 1254 | USTORM_ISCSI_NUM_OF_TASKS_OFFSET(func), |
| 1255 | req1->num_tasks_per_conn); |
| 1256 | CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(func), |
| 1257 | req1->rq_num_wqes); |
| 1258 | CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(func), |
| 1259 | req1->cq_num_wqes); |
| 1260 | CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(func), |
| 1261 | cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS); |
| 1262 | |
| 1263 | /* init Xstorm RAM */ |
| 1264 | CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(func), |
| 1265 | PAGE_SIZE); |
| 1266 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 1267 | XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT); |
| 1268 | CNIC_WR16(dev, BAR_XSTRORM_INTMEM + |
| 1269 | XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func), |
| 1270 | req1->num_tasks_per_conn); |
| 1271 | CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(func), |
| 1272 | hq_bds); |
| 1273 | CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(func), |
| 1274 | req1->num_tasks_per_conn); |
| 1275 | CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(func), |
| 1276 | cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS); |
| 1277 | |
| 1278 | /* init Cstorm RAM */ |
| 1279 | CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(func), |
| 1280 | PAGE_SIZE); |
| 1281 | CNIC_WR8(dev, BAR_CSTRORM_INTMEM + |
| 1282 | CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT); |
| 1283 | CNIC_WR16(dev, BAR_CSTRORM_INTMEM + |
| 1284 | CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func), |
| 1285 | req1->num_tasks_per_conn); |
| 1286 | CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(func), |
| 1287 | req1->cq_num_wqes); |
| 1288 | CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(func), |
| 1289 | hq_bds); |
| 1290 | |
| 1291 | return 0; |
| 1292 | } |
| 1293 | |
| 1294 | static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe) |
| 1295 | { |
| 1296 | struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe; |
| 1297 | struct cnic_local *cp = dev->cnic_priv; |
| 1298 | int func = cp->func; |
| 1299 | struct iscsi_kcqe kcqe; |
| 1300 | struct kcqe *cqes[1]; |
| 1301 | |
| 1302 | memset(&kcqe, 0, sizeof(kcqe)); |
| 1303 | if (!dev->max_iscsi_conn) { |
| 1304 | kcqe.completion_status = |
| 1305 | ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED; |
| 1306 | goto done; |
| 1307 | } |
| 1308 | |
| 1309 | CNIC_WR(dev, BAR_TSTRORM_INTMEM + |
| 1310 | TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]); |
| 1311 | CNIC_WR(dev, BAR_TSTRORM_INTMEM + |
| 1312 | TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4, |
| 1313 | req2->error_bit_map[1]); |
| 1314 | |
| 1315 | CNIC_WR16(dev, BAR_USTRORM_INTMEM + |
| 1316 | USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn); |
| 1317 | CNIC_WR(dev, BAR_USTRORM_INTMEM + |
| 1318 | USTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]); |
| 1319 | CNIC_WR(dev, BAR_USTRORM_INTMEM + |
| 1320 | USTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4, |
| 1321 | req2->error_bit_map[1]); |
| 1322 | |
| 1323 | CNIC_WR16(dev, BAR_CSTRORM_INTMEM + |
| 1324 | CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn); |
| 1325 | |
| 1326 | kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS; |
| 1327 | |
| 1328 | done: |
| 1329 | kcqe.op_code = ISCSI_KCQE_OPCODE_INIT; |
| 1330 | cqes[0] = (struct kcqe *) &kcqe; |
| 1331 | cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1); |
| 1332 | |
| 1333 | return 0; |
| 1334 | } |
| 1335 | |
| 1336 | static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid) |
| 1337 | { |
| 1338 | struct cnic_local *cp = dev->cnic_priv; |
| 1339 | struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; |
| 1340 | |
| 1341 | if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) { |
| 1342 | struct cnic_iscsi *iscsi = ctx->proto.iscsi; |
| 1343 | |
| 1344 | cnic_free_dma(dev, &iscsi->hq_info); |
| 1345 | cnic_free_dma(dev, &iscsi->r2tq_info); |
| 1346 | cnic_free_dma(dev, &iscsi->task_array_info); |
| 1347 | } |
| 1348 | cnic_free_id(&cp->cid_tbl, ctx->cid); |
| 1349 | ctx->cid = 0; |
| 1350 | } |
| 1351 | |
| 1352 | static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid) |
| 1353 | { |
| 1354 | u32 cid; |
| 1355 | int ret, pages; |
| 1356 | struct cnic_local *cp = dev->cnic_priv; |
| 1357 | struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; |
| 1358 | struct cnic_iscsi *iscsi = ctx->proto.iscsi; |
| 1359 | |
| 1360 | cid = cnic_alloc_new_id(&cp->cid_tbl); |
| 1361 | if (cid == -1) { |
| 1362 | ret = -ENOMEM; |
| 1363 | goto error; |
| 1364 | } |
| 1365 | |
| 1366 | ctx->cid = cid; |
| 1367 | pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE; |
| 1368 | |
| 1369 | ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1); |
| 1370 | if (ret) |
| 1371 | goto error; |
| 1372 | |
| 1373 | pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE; |
| 1374 | ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1); |
| 1375 | if (ret) |
| 1376 | goto error; |
| 1377 | |
| 1378 | pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE; |
| 1379 | ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1); |
| 1380 | if (ret) |
| 1381 | goto error; |
| 1382 | |
| 1383 | return 0; |
| 1384 | |
| 1385 | error: |
| 1386 | cnic_free_bnx2x_conn_resc(dev, l5_cid); |
| 1387 | return ret; |
| 1388 | } |
| 1389 | |
| 1390 | static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init, |
| 1391 | struct regpair *ctx_addr) |
| 1392 | { |
| 1393 | struct cnic_local *cp = dev->cnic_priv; |
| 1394 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 1395 | int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk; |
| 1396 | int off = (cid - ethdev->starting_cid) % cp->cids_per_blk; |
| 1397 | unsigned long align_off = 0; |
| 1398 | dma_addr_t ctx_map; |
| 1399 | void *ctx; |
| 1400 | |
| 1401 | if (cp->ctx_align) { |
| 1402 | unsigned long mask = cp->ctx_align - 1; |
| 1403 | |
| 1404 | if (cp->ctx_arr[blk].mapping & mask) |
| 1405 | align_off = cp->ctx_align - |
| 1406 | (cp->ctx_arr[blk].mapping & mask); |
| 1407 | } |
| 1408 | ctx_map = cp->ctx_arr[blk].mapping + align_off + |
| 1409 | (off * BNX2X_CONTEXT_MEM_SIZE); |
| 1410 | ctx = cp->ctx_arr[blk].ctx + align_off + |
| 1411 | (off * BNX2X_CONTEXT_MEM_SIZE); |
| 1412 | if (init) |
| 1413 | memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE); |
| 1414 | |
| 1415 | ctx_addr->lo = ctx_map & 0xffffffff; |
| 1416 | ctx_addr->hi = (u64) ctx_map >> 32; |
| 1417 | return ctx; |
| 1418 | } |
| 1419 | |
| 1420 | static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[], |
| 1421 | u32 num) |
| 1422 | { |
| 1423 | struct cnic_local *cp = dev->cnic_priv; |
| 1424 | struct iscsi_kwqe_conn_offload1 *req1 = |
| 1425 | (struct iscsi_kwqe_conn_offload1 *) wqes[0]; |
| 1426 | struct iscsi_kwqe_conn_offload2 *req2 = |
| 1427 | (struct iscsi_kwqe_conn_offload2 *) wqes[1]; |
| 1428 | struct iscsi_kwqe_conn_offload3 *req3; |
| 1429 | struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id]; |
| 1430 | struct cnic_iscsi *iscsi = ctx->proto.iscsi; |
| 1431 | u32 cid = ctx->cid; |
| 1432 | u32 hw_cid = BNX2X_HW_CID(cid, cp->func); |
| 1433 | struct iscsi_context *ictx; |
| 1434 | struct regpair context_addr; |
| 1435 | int i, j, n = 2, n_max; |
| 1436 | |
| 1437 | ctx->ctx_flags = 0; |
| 1438 | if (!req2->num_additional_wqes) |
| 1439 | return -EINVAL; |
| 1440 | |
| 1441 | n_max = req2->num_additional_wqes + 2; |
| 1442 | |
| 1443 | ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr); |
| 1444 | if (ictx == NULL) |
| 1445 | return -ENOMEM; |
| 1446 | |
| 1447 | req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++]; |
| 1448 | |
| 1449 | ictx->xstorm_ag_context.hq_prod = 1; |
| 1450 | |
| 1451 | ictx->xstorm_st_context.iscsi.first_burst_length = |
| 1452 | ISCSI_DEF_FIRST_BURST_LEN; |
| 1453 | ictx->xstorm_st_context.iscsi.max_send_pdu_length = |
| 1454 | ISCSI_DEF_MAX_RECV_SEG_LEN; |
| 1455 | ictx->xstorm_st_context.iscsi.sq_pbl_base.lo = |
| 1456 | req1->sq_page_table_addr_lo; |
| 1457 | ictx->xstorm_st_context.iscsi.sq_pbl_base.hi = |
| 1458 | req1->sq_page_table_addr_hi; |
| 1459 | ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi; |
| 1460 | ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo; |
| 1461 | ictx->xstorm_st_context.iscsi.hq_pbl_base.lo = |
| 1462 | iscsi->hq_info.pgtbl_map & 0xffffffff; |
| 1463 | ictx->xstorm_st_context.iscsi.hq_pbl_base.hi = |
| 1464 | (u64) iscsi->hq_info.pgtbl_map >> 32; |
| 1465 | ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo = |
| 1466 | iscsi->hq_info.pgtbl[0]; |
| 1467 | ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi = |
| 1468 | iscsi->hq_info.pgtbl[1]; |
| 1469 | ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo = |
| 1470 | iscsi->r2tq_info.pgtbl_map & 0xffffffff; |
| 1471 | ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi = |
| 1472 | (u64) iscsi->r2tq_info.pgtbl_map >> 32; |
| 1473 | ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo = |
| 1474 | iscsi->r2tq_info.pgtbl[0]; |
| 1475 | ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi = |
| 1476 | iscsi->r2tq_info.pgtbl[1]; |
| 1477 | ictx->xstorm_st_context.iscsi.task_pbl_base.lo = |
| 1478 | iscsi->task_array_info.pgtbl_map & 0xffffffff; |
| 1479 | ictx->xstorm_st_context.iscsi.task_pbl_base.hi = |
| 1480 | (u64) iscsi->task_array_info.pgtbl_map >> 32; |
| 1481 | ictx->xstorm_st_context.iscsi.task_pbl_cache_idx = |
| 1482 | BNX2X_ISCSI_PBL_NOT_CACHED; |
| 1483 | ictx->xstorm_st_context.iscsi.flags.flags |= |
| 1484 | XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA; |
| 1485 | ictx->xstorm_st_context.iscsi.flags.flags |= |
| 1486 | XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T; |
| 1487 | |
| 1488 | ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE; |
| 1489 | /* TSTORM requires the base address of RQ DB & not PTE */ |
| 1490 | ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo = |
| 1491 | req2->rq_page_table_addr_lo & PAGE_MASK; |
| 1492 | ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi = |
| 1493 | req2->rq_page_table_addr_hi; |
| 1494 | ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id; |
| 1495 | ictx->tstorm_st_context.tcp.cwnd = 0x5A8; |
| 1496 | ictx->tstorm_st_context.tcp.flags2 |= |
| 1497 | TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN; |
| 1498 | |
| 1499 | ictx->timers_context.flags |= ISCSI_TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG; |
| 1500 | |
| 1501 | ictx->ustorm_st_context.ring.rq.pbl_base.lo = |
| 1502 | req2->rq_page_table_addr_lo & 0xffffffff; |
| 1503 | ictx->ustorm_st_context.ring.rq.pbl_base.hi = |
| 1504 | (u64) req2->rq_page_table_addr_hi >> 32; |
| 1505 | ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi; |
| 1506 | ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo; |
| 1507 | ictx->ustorm_st_context.ring.r2tq.pbl_base.lo = |
| 1508 | iscsi->r2tq_info.pgtbl_map & 0xffffffff; |
| 1509 | ictx->ustorm_st_context.ring.r2tq.pbl_base.hi = |
| 1510 | (u64) iscsi->r2tq_info.pgtbl_map >> 32; |
| 1511 | ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo = |
| 1512 | iscsi->r2tq_info.pgtbl[0]; |
| 1513 | ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi = |
| 1514 | iscsi->r2tq_info.pgtbl[1]; |
| 1515 | ictx->ustorm_st_context.ring.cq_pbl_base.lo = |
| 1516 | req1->cq_page_table_addr_lo; |
| 1517 | ictx->ustorm_st_context.ring.cq_pbl_base.hi = |
| 1518 | req1->cq_page_table_addr_hi; |
| 1519 | ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN; |
| 1520 | ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi; |
| 1521 | ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo; |
| 1522 | ictx->ustorm_st_context.task_pbe_cache_index = |
| 1523 | BNX2X_ISCSI_PBL_NOT_CACHED; |
| 1524 | ictx->ustorm_st_context.task_pdu_cache_index = |
| 1525 | BNX2X_ISCSI_PDU_HEADER_NOT_CACHED; |
| 1526 | |
| 1527 | for (i = 1, j = 1; i < cp->num_cqs; i++, j++) { |
| 1528 | if (j == 3) { |
| 1529 | if (n >= n_max) |
| 1530 | break; |
| 1531 | req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++]; |
| 1532 | j = 0; |
| 1533 | } |
| 1534 | ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN; |
| 1535 | ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo = |
| 1536 | req3->qp_first_pte[j].hi; |
| 1537 | ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi = |
| 1538 | req3->qp_first_pte[j].lo; |
| 1539 | } |
| 1540 | |
| 1541 | ictx->ustorm_st_context.task_pbl_base.lo = |
| 1542 | iscsi->task_array_info.pgtbl_map & 0xffffffff; |
| 1543 | ictx->ustorm_st_context.task_pbl_base.hi = |
| 1544 | (u64) iscsi->task_array_info.pgtbl_map >> 32; |
| 1545 | ictx->ustorm_st_context.tce_phy_addr.lo = |
| 1546 | iscsi->task_array_info.pgtbl[0]; |
| 1547 | ictx->ustorm_st_context.tce_phy_addr.hi = |
| 1548 | iscsi->task_array_info.pgtbl[1]; |
| 1549 | ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id; |
| 1550 | ictx->ustorm_st_context.num_cqs = cp->num_cqs; |
| 1551 | ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN; |
| 1552 | ictx->ustorm_st_context.negotiated_rx_and_flags |= |
| 1553 | ISCSI_DEF_MAX_BURST_LEN; |
| 1554 | ictx->ustorm_st_context.negotiated_rx |= |
| 1555 | ISCSI_DEFAULT_MAX_OUTSTANDING_R2T << |
| 1556 | USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT; |
| 1557 | |
| 1558 | ictx->cstorm_st_context.hq_pbl_base.lo = |
| 1559 | iscsi->hq_info.pgtbl_map & 0xffffffff; |
| 1560 | ictx->cstorm_st_context.hq_pbl_base.hi = |
| 1561 | (u64) iscsi->hq_info.pgtbl_map >> 32; |
| 1562 | ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0]; |
| 1563 | ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1]; |
| 1564 | ictx->cstorm_st_context.task_pbl_base.lo = |
| 1565 | iscsi->task_array_info.pgtbl_map & 0xffffffff; |
| 1566 | ictx->cstorm_st_context.task_pbl_base.hi = |
| 1567 | (u64) iscsi->task_array_info.pgtbl_map >> 32; |
| 1568 | /* CSTORM and USTORM initialization is different, CSTORM requires |
| 1569 | * CQ DB base & not PTE addr */ |
| 1570 | ictx->cstorm_st_context.cq_db_base.lo = |
| 1571 | req1->cq_page_table_addr_lo & PAGE_MASK; |
| 1572 | ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi; |
| 1573 | ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id; |
| 1574 | ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1; |
| 1575 | for (i = 0; i < cp->num_cqs; i++) { |
| 1576 | ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] = |
| 1577 | ISCSI_INITIAL_SN; |
| 1578 | ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] = |
| 1579 | ISCSI_INITIAL_SN; |
| 1580 | } |
| 1581 | |
| 1582 | ictx->xstorm_ag_context.cdu_reserved = |
| 1583 | CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG, |
| 1584 | ISCSI_CONNECTION_TYPE); |
| 1585 | ictx->ustorm_ag_context.cdu_usage = |
| 1586 | CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG, |
| 1587 | ISCSI_CONNECTION_TYPE); |
| 1588 | return 0; |
| 1589 | |
| 1590 | } |
| 1591 | |
| 1592 | static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[], |
| 1593 | u32 num, int *work) |
| 1594 | { |
| 1595 | struct iscsi_kwqe_conn_offload1 *req1; |
| 1596 | struct iscsi_kwqe_conn_offload2 *req2; |
| 1597 | struct cnic_local *cp = dev->cnic_priv; |
| 1598 | struct iscsi_kcqe kcqe; |
| 1599 | struct kcqe *cqes[1]; |
| 1600 | u32 l5_cid; |
| 1601 | int ret; |
| 1602 | |
| 1603 | if (num < 2) { |
| 1604 | *work = num; |
| 1605 | return -EINVAL; |
| 1606 | } |
| 1607 | |
| 1608 | req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0]; |
| 1609 | req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1]; |
| 1610 | if ((num - 2) < req2->num_additional_wqes) { |
| 1611 | *work = num; |
| 1612 | return -EINVAL; |
| 1613 | } |
| 1614 | *work = 2 + req2->num_additional_wqes;; |
| 1615 | |
| 1616 | l5_cid = req1->iscsi_conn_id; |
| 1617 | if (l5_cid >= MAX_ISCSI_TBL_SZ) |
| 1618 | return -EINVAL; |
| 1619 | |
| 1620 | memset(&kcqe, 0, sizeof(kcqe)); |
| 1621 | kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN; |
| 1622 | kcqe.iscsi_conn_id = l5_cid; |
| 1623 | kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE; |
| 1624 | |
| 1625 | if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) { |
| 1626 | atomic_dec(&cp->iscsi_conn); |
| 1627 | ret = 0; |
| 1628 | goto done; |
| 1629 | } |
| 1630 | ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid); |
| 1631 | if (ret) { |
| 1632 | atomic_dec(&cp->iscsi_conn); |
| 1633 | ret = 0; |
| 1634 | goto done; |
| 1635 | } |
| 1636 | ret = cnic_setup_bnx2x_ctx(dev, wqes, num); |
| 1637 | if (ret < 0) { |
| 1638 | cnic_free_bnx2x_conn_resc(dev, l5_cid); |
| 1639 | atomic_dec(&cp->iscsi_conn); |
| 1640 | goto done; |
| 1641 | } |
| 1642 | |
| 1643 | kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS; |
| 1644 | kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp->ctx_tbl[l5_cid].cid, |
| 1645 | cp->func); |
| 1646 | |
| 1647 | done: |
| 1648 | cqes[0] = (struct kcqe *) &kcqe; |
| 1649 | cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1); |
| 1650 | return ret; |
| 1651 | } |
| 1652 | |
| 1653 | |
| 1654 | static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe) |
| 1655 | { |
| 1656 | struct cnic_local *cp = dev->cnic_priv; |
| 1657 | struct iscsi_kwqe_conn_update *req = |
| 1658 | (struct iscsi_kwqe_conn_update *) kwqe; |
| 1659 | void *data; |
| 1660 | union l5cm_specific_data l5_data; |
| 1661 | u32 l5_cid, cid = BNX2X_SW_CID(req->context_id); |
| 1662 | int ret; |
| 1663 | |
| 1664 | if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0) |
| 1665 | return -EINVAL; |
| 1666 | |
| 1667 | data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data); |
| 1668 | if (!data) |
| 1669 | return -ENOMEM; |
| 1670 | |
| 1671 | memcpy(data, kwqe, sizeof(struct kwqe)); |
| 1672 | |
| 1673 | ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN, |
| 1674 | req->context_id, ISCSI_CONNECTION_TYPE, &l5_data); |
| 1675 | return ret; |
| 1676 | } |
| 1677 | |
| 1678 | static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe) |
| 1679 | { |
| 1680 | struct cnic_local *cp = dev->cnic_priv; |
| 1681 | struct iscsi_kwqe_conn_destroy *req = |
| 1682 | (struct iscsi_kwqe_conn_destroy *) kwqe; |
| 1683 | union l5cm_specific_data l5_data; |
| 1684 | u32 l5_cid = req->reserved0; |
| 1685 | struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; |
| 1686 | int ret = 0; |
| 1687 | struct iscsi_kcqe kcqe; |
| 1688 | struct kcqe *cqes[1]; |
| 1689 | |
| 1690 | if (!(ctx->ctx_flags & CTX_FL_OFFLD_START)) |
| 1691 | goto skip_cfc_delete; |
| 1692 | |
| 1693 | while (!time_after(jiffies, ctx->timestamp + (2 * HZ))) |
| 1694 | msleep(250); |
| 1695 | |
| 1696 | init_waitqueue_head(&ctx->waitq); |
| 1697 | ctx->wait_cond = 0; |
| 1698 | memset(&l5_data, 0, sizeof(l5_data)); |
| 1699 | ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CFC_DEL, |
| 1700 | req->context_id, |
| 1701 | ETH_CONNECTION_TYPE | |
| 1702 | (1 << SPE_HDR_COMMON_RAMROD_SHIFT), |
| 1703 | &l5_data); |
| 1704 | if (ret == 0) |
| 1705 | wait_event(ctx->waitq, ctx->wait_cond); |
| 1706 | |
| 1707 | skip_cfc_delete: |
| 1708 | cnic_free_bnx2x_conn_resc(dev, l5_cid); |
| 1709 | |
| 1710 | atomic_dec(&cp->iscsi_conn); |
| 1711 | |
| 1712 | memset(&kcqe, 0, sizeof(kcqe)); |
| 1713 | kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN; |
| 1714 | kcqe.iscsi_conn_id = l5_cid; |
| 1715 | kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS; |
| 1716 | kcqe.iscsi_conn_context_id = req->context_id; |
| 1717 | |
| 1718 | cqes[0] = (struct kcqe *) &kcqe; |
| 1719 | cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1); |
| 1720 | |
| 1721 | return ret; |
| 1722 | } |
| 1723 | |
| 1724 | static void cnic_init_storm_conn_bufs(struct cnic_dev *dev, |
| 1725 | struct l4_kwq_connect_req1 *kwqe1, |
| 1726 | struct l4_kwq_connect_req3 *kwqe3, |
| 1727 | struct l5cm_active_conn_buffer *conn_buf) |
| 1728 | { |
| 1729 | struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf; |
| 1730 | struct l5cm_xstorm_conn_buffer *xstorm_buf = |
| 1731 | &conn_buf->xstorm_conn_buffer; |
| 1732 | struct l5cm_tstorm_conn_buffer *tstorm_buf = |
| 1733 | &conn_buf->tstorm_conn_buffer; |
| 1734 | struct regpair context_addr; |
| 1735 | u32 cid = BNX2X_SW_CID(kwqe1->cid); |
| 1736 | struct in6_addr src_ip, dst_ip; |
| 1737 | int i; |
| 1738 | u32 *addrp; |
| 1739 | |
| 1740 | addrp = (u32 *) &conn_addr->local_ip_addr; |
| 1741 | for (i = 0; i < 4; i++, addrp++) |
| 1742 | src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp); |
| 1743 | |
| 1744 | addrp = (u32 *) &conn_addr->remote_ip_addr; |
| 1745 | for (i = 0; i < 4; i++, addrp++) |
| 1746 | dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp); |
| 1747 | |
| 1748 | cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr); |
| 1749 | |
| 1750 | xstorm_buf->context_addr.hi = context_addr.hi; |
| 1751 | xstorm_buf->context_addr.lo = context_addr.lo; |
| 1752 | xstorm_buf->mss = 0xffff; |
| 1753 | xstorm_buf->rcv_buf = kwqe3->rcv_buf; |
| 1754 | if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE) |
| 1755 | xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE; |
| 1756 | xstorm_buf->pseudo_header_checksum = |
| 1757 | swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0)); |
| 1758 | |
| 1759 | if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK)) |
| 1760 | tstorm_buf->params |= |
| 1761 | L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE; |
| 1762 | if (kwqe3->ka_timeout) { |
| 1763 | tstorm_buf->ka_enable = 1; |
| 1764 | tstorm_buf->ka_timeout = kwqe3->ka_timeout; |
| 1765 | tstorm_buf->ka_interval = kwqe3->ka_interval; |
| 1766 | tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count; |
| 1767 | } |
| 1768 | tstorm_buf->rcv_buf = kwqe3->rcv_buf; |
| 1769 | tstorm_buf->snd_buf = kwqe3->snd_buf; |
| 1770 | tstorm_buf->max_rt_time = 0xffffffff; |
| 1771 | } |
| 1772 | |
| 1773 | static void cnic_init_bnx2x_mac(struct cnic_dev *dev) |
| 1774 | { |
| 1775 | struct cnic_local *cp = dev->cnic_priv; |
| 1776 | int func = CNIC_FUNC(cp); |
| 1777 | u8 *mac = dev->mac_addr; |
| 1778 | |
| 1779 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 1780 | XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(func), mac[0]); |
| 1781 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 1782 | XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(func), mac[1]); |
| 1783 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 1784 | XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(func), mac[2]); |
| 1785 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 1786 | XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(func), mac[3]); |
| 1787 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 1788 | XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(func), mac[4]); |
| 1789 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 1790 | XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(func), mac[5]); |
| 1791 | |
| 1792 | CNIC_WR8(dev, BAR_TSTRORM_INTMEM + |
| 1793 | TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func), mac[5]); |
| 1794 | CNIC_WR8(dev, BAR_TSTRORM_INTMEM + |
| 1795 | TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func) + 1, |
| 1796 | mac[4]); |
| 1797 | CNIC_WR8(dev, BAR_TSTRORM_INTMEM + |
| 1798 | TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func), mac[3]); |
| 1799 | CNIC_WR8(dev, BAR_TSTRORM_INTMEM + |
| 1800 | TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 1, |
| 1801 | mac[2]); |
| 1802 | CNIC_WR8(dev, BAR_TSTRORM_INTMEM + |
| 1803 | TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 2, |
| 1804 | mac[1]); |
| 1805 | CNIC_WR8(dev, BAR_TSTRORM_INTMEM + |
| 1806 | TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 3, |
| 1807 | mac[0]); |
| 1808 | } |
| 1809 | |
| 1810 | static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts) |
| 1811 | { |
| 1812 | struct cnic_local *cp = dev->cnic_priv; |
| 1813 | u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN; |
| 1814 | u16 tstorm_flags = 0; |
| 1815 | |
| 1816 | if (tcp_ts) { |
| 1817 | xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED; |
| 1818 | tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED; |
| 1819 | } |
| 1820 | |
| 1821 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 1822 | XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), xstorm_flags); |
| 1823 | |
| 1824 | CNIC_WR16(dev, BAR_TSTRORM_INTMEM + |
| 1825 | TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), tstorm_flags); |
| 1826 | } |
| 1827 | |
| 1828 | static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[], |
| 1829 | u32 num, int *work) |
| 1830 | { |
| 1831 | struct cnic_local *cp = dev->cnic_priv; |
| 1832 | struct l4_kwq_connect_req1 *kwqe1 = |
| 1833 | (struct l4_kwq_connect_req1 *) wqes[0]; |
| 1834 | struct l4_kwq_connect_req3 *kwqe3; |
| 1835 | struct l5cm_active_conn_buffer *conn_buf; |
| 1836 | struct l5cm_conn_addr_params *conn_addr; |
| 1837 | union l5cm_specific_data l5_data; |
| 1838 | u32 l5_cid = kwqe1->pg_cid; |
| 1839 | struct cnic_sock *csk = &cp->csk_tbl[l5_cid]; |
| 1840 | struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; |
| 1841 | int ret; |
| 1842 | |
| 1843 | if (num < 2) { |
| 1844 | *work = num; |
| 1845 | return -EINVAL; |
| 1846 | } |
| 1847 | |
| 1848 | if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) |
| 1849 | *work = 3; |
| 1850 | else |
| 1851 | *work = 2; |
| 1852 | |
| 1853 | if (num < *work) { |
| 1854 | *work = num; |
| 1855 | return -EINVAL; |
| 1856 | } |
| 1857 | |
| 1858 | if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) { |
| 1859 | printk(KERN_ERR PFX "%s: conn_buf size too big\n", |
| 1860 | dev->netdev->name); |
| 1861 | return -ENOMEM; |
| 1862 | } |
| 1863 | conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data); |
| 1864 | if (!conn_buf) |
| 1865 | return -ENOMEM; |
| 1866 | |
| 1867 | memset(conn_buf, 0, sizeof(*conn_buf)); |
| 1868 | |
| 1869 | conn_addr = &conn_buf->conn_addr_buf; |
| 1870 | conn_addr->remote_addr_0 = csk->ha[0]; |
| 1871 | conn_addr->remote_addr_1 = csk->ha[1]; |
| 1872 | conn_addr->remote_addr_2 = csk->ha[2]; |
| 1873 | conn_addr->remote_addr_3 = csk->ha[3]; |
| 1874 | conn_addr->remote_addr_4 = csk->ha[4]; |
| 1875 | conn_addr->remote_addr_5 = csk->ha[5]; |
| 1876 | |
| 1877 | if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) { |
| 1878 | struct l4_kwq_connect_req2 *kwqe2 = |
| 1879 | (struct l4_kwq_connect_req2 *) wqes[1]; |
| 1880 | |
| 1881 | conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4; |
| 1882 | conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3; |
| 1883 | conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2; |
| 1884 | |
| 1885 | conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4; |
| 1886 | conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3; |
| 1887 | conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2; |
| 1888 | conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION; |
| 1889 | } |
| 1890 | kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1]; |
| 1891 | |
| 1892 | conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip; |
| 1893 | conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip; |
| 1894 | conn_addr->local_tcp_port = kwqe1->src_port; |
| 1895 | conn_addr->remote_tcp_port = kwqe1->dst_port; |
| 1896 | |
| 1897 | conn_addr->pmtu = kwqe3->pmtu; |
| 1898 | cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf); |
| 1899 | |
| 1900 | CNIC_WR16(dev, BAR_XSTRORM_INTMEM + |
| 1901 | XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->func), csk->vlan_id); |
| 1902 | |
| 1903 | cnic_bnx2x_set_tcp_timestamp(dev, |
| 1904 | kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP); |
| 1905 | |
| 1906 | ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT, |
| 1907 | kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data); |
| 1908 | if (!ret) |
| 1909 | ctx->ctx_flags |= CTX_FL_OFFLD_START; |
| 1910 | |
| 1911 | return ret; |
| 1912 | } |
| 1913 | |
| 1914 | static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe) |
| 1915 | { |
| 1916 | struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe; |
| 1917 | union l5cm_specific_data l5_data; |
| 1918 | int ret; |
| 1919 | |
| 1920 | memset(&l5_data, 0, sizeof(l5_data)); |
| 1921 | ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE, |
| 1922 | req->cid, ISCSI_CONNECTION_TYPE, &l5_data); |
| 1923 | return ret; |
| 1924 | } |
| 1925 | |
| 1926 | static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe) |
| 1927 | { |
| 1928 | struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe; |
| 1929 | union l5cm_specific_data l5_data; |
| 1930 | int ret; |
| 1931 | |
| 1932 | memset(&l5_data, 0, sizeof(l5_data)); |
| 1933 | ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT, |
| 1934 | req->cid, ISCSI_CONNECTION_TYPE, &l5_data); |
| 1935 | return ret; |
| 1936 | } |
| 1937 | static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe) |
| 1938 | { |
| 1939 | struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe; |
| 1940 | struct l4_kcq kcqe; |
| 1941 | struct kcqe *cqes[1]; |
| 1942 | |
| 1943 | memset(&kcqe, 0, sizeof(kcqe)); |
| 1944 | kcqe.pg_host_opaque = req->host_opaque; |
| 1945 | kcqe.pg_cid = req->host_opaque; |
| 1946 | kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG; |
| 1947 | cqes[0] = (struct kcqe *) &kcqe; |
| 1948 | cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1); |
| 1949 | return 0; |
| 1950 | } |
| 1951 | |
| 1952 | static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe) |
| 1953 | { |
| 1954 | struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe; |
| 1955 | struct l4_kcq kcqe; |
| 1956 | struct kcqe *cqes[1]; |
| 1957 | |
| 1958 | memset(&kcqe, 0, sizeof(kcqe)); |
| 1959 | kcqe.pg_host_opaque = req->pg_host_opaque; |
| 1960 | kcqe.pg_cid = req->pg_cid; |
| 1961 | kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG; |
| 1962 | cqes[0] = (struct kcqe *) &kcqe; |
| 1963 | cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1); |
| 1964 | return 0; |
| 1965 | } |
| 1966 | |
| 1967 | static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[], |
| 1968 | u32 num_wqes) |
| 1969 | { |
| 1970 | int i, work, ret; |
| 1971 | u32 opcode; |
| 1972 | struct kwqe *kwqe; |
| 1973 | |
| 1974 | if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) |
| 1975 | return -EAGAIN; /* bnx2 is down */ |
| 1976 | |
| 1977 | for (i = 0; i < num_wqes; ) { |
| 1978 | kwqe = wqes[i]; |
| 1979 | opcode = KWQE_OPCODE(kwqe->kwqe_op_flag); |
| 1980 | work = 1; |
| 1981 | |
| 1982 | switch (opcode) { |
| 1983 | case ISCSI_KWQE_OPCODE_INIT1: |
| 1984 | ret = cnic_bnx2x_iscsi_init1(dev, kwqe); |
| 1985 | break; |
| 1986 | case ISCSI_KWQE_OPCODE_INIT2: |
| 1987 | ret = cnic_bnx2x_iscsi_init2(dev, kwqe); |
| 1988 | break; |
| 1989 | case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1: |
| 1990 | ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i], |
| 1991 | num_wqes - i, &work); |
| 1992 | break; |
| 1993 | case ISCSI_KWQE_OPCODE_UPDATE_CONN: |
| 1994 | ret = cnic_bnx2x_iscsi_update(dev, kwqe); |
| 1995 | break; |
| 1996 | case ISCSI_KWQE_OPCODE_DESTROY_CONN: |
| 1997 | ret = cnic_bnx2x_iscsi_destroy(dev, kwqe); |
| 1998 | break; |
| 1999 | case L4_KWQE_OPCODE_VALUE_CONNECT1: |
| 2000 | ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i, |
| 2001 | &work); |
| 2002 | break; |
| 2003 | case L4_KWQE_OPCODE_VALUE_CLOSE: |
| 2004 | ret = cnic_bnx2x_close(dev, kwqe); |
| 2005 | break; |
| 2006 | case L4_KWQE_OPCODE_VALUE_RESET: |
| 2007 | ret = cnic_bnx2x_reset(dev, kwqe); |
| 2008 | break; |
| 2009 | case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG: |
| 2010 | ret = cnic_bnx2x_offload_pg(dev, kwqe); |
| 2011 | break; |
| 2012 | case L4_KWQE_OPCODE_VALUE_UPDATE_PG: |
| 2013 | ret = cnic_bnx2x_update_pg(dev, kwqe); |
| 2014 | break; |
| 2015 | case L4_KWQE_OPCODE_VALUE_UPLOAD_PG: |
| 2016 | ret = 0; |
| 2017 | break; |
| 2018 | default: |
| 2019 | ret = 0; |
| 2020 | printk(KERN_ERR PFX "%s: Unknown type of KWQE(0x%x)\n", |
| 2021 | dev->netdev->name, opcode); |
| 2022 | break; |
| 2023 | } |
| 2024 | if (ret < 0) |
| 2025 | printk(KERN_ERR PFX "%s: KWQE(0x%x) failed\n", |
| 2026 | dev->netdev->name, opcode); |
| 2027 | i += work; |
| 2028 | } |
| 2029 | return 0; |
| 2030 | } |
| 2031 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2032 | static void service_kcqes(struct cnic_dev *dev, int num_cqes) |
| 2033 | { |
| 2034 | struct cnic_local *cp = dev->cnic_priv; |
| 2035 | int i, j; |
| 2036 | |
| 2037 | i = 0; |
| 2038 | j = 1; |
| 2039 | while (num_cqes) { |
| 2040 | struct cnic_ulp_ops *ulp_ops; |
| 2041 | int ulp_type; |
| 2042 | u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag; |
| 2043 | u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK; |
| 2044 | |
| 2045 | if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION)) |
| 2046 | cnic_kwq_completion(dev, 1); |
| 2047 | |
| 2048 | while (j < num_cqes) { |
| 2049 | u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag; |
| 2050 | |
| 2051 | if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer) |
| 2052 | break; |
| 2053 | |
| 2054 | if (unlikely(next_op & KCQE_RAMROD_COMPLETION)) |
| 2055 | cnic_kwq_completion(dev, 1); |
| 2056 | j++; |
| 2057 | } |
| 2058 | |
| 2059 | if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA) |
| 2060 | ulp_type = CNIC_ULP_RDMA; |
| 2061 | else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI) |
| 2062 | ulp_type = CNIC_ULP_ISCSI; |
| 2063 | else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4) |
| 2064 | ulp_type = CNIC_ULP_L4; |
| 2065 | else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2) |
| 2066 | goto end; |
| 2067 | else { |
| 2068 | printk(KERN_ERR PFX "%s: Unknown type of KCQE(0x%x)\n", |
| 2069 | dev->netdev->name, kcqe_op_flag); |
| 2070 | goto end; |
| 2071 | } |
| 2072 | |
| 2073 | rcu_read_lock(); |
| 2074 | ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]); |
| 2075 | if (likely(ulp_ops)) { |
| 2076 | ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type], |
| 2077 | cp->completed_kcq + i, j); |
| 2078 | } |
| 2079 | rcu_read_unlock(); |
| 2080 | end: |
| 2081 | num_cqes -= j; |
| 2082 | i += j; |
| 2083 | j = 1; |
| 2084 | } |
| 2085 | return; |
| 2086 | } |
| 2087 | |
| 2088 | static u16 cnic_bnx2_next_idx(u16 idx) |
| 2089 | { |
| 2090 | return idx + 1; |
| 2091 | } |
| 2092 | |
| 2093 | static u16 cnic_bnx2_hw_idx(u16 idx) |
| 2094 | { |
| 2095 | return idx; |
| 2096 | } |
| 2097 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 2098 | static u16 cnic_bnx2x_next_idx(u16 idx) |
| 2099 | { |
| 2100 | idx++; |
| 2101 | if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT) |
| 2102 | idx++; |
| 2103 | |
| 2104 | return idx; |
| 2105 | } |
| 2106 | |
| 2107 | static u16 cnic_bnx2x_hw_idx(u16 idx) |
| 2108 | { |
| 2109 | if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT) |
| 2110 | idx++; |
| 2111 | return idx; |
| 2112 | } |
| 2113 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2114 | static int cnic_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod) |
| 2115 | { |
| 2116 | struct cnic_local *cp = dev->cnic_priv; |
| 2117 | u16 i, ri, last; |
| 2118 | struct kcqe *kcqe; |
| 2119 | int kcqe_cnt = 0, last_cnt = 0; |
| 2120 | |
| 2121 | i = ri = last = *sw_prod; |
| 2122 | ri &= MAX_KCQ_IDX; |
| 2123 | |
| 2124 | while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) { |
| 2125 | kcqe = &cp->kcq[KCQ_PG(ri)][KCQ_IDX(ri)]; |
| 2126 | cp->completed_kcq[kcqe_cnt++] = kcqe; |
| 2127 | i = cp->next_idx(i); |
| 2128 | ri = i & MAX_KCQ_IDX; |
| 2129 | if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) { |
| 2130 | last_cnt = kcqe_cnt; |
| 2131 | last = i; |
| 2132 | } |
| 2133 | } |
| 2134 | |
| 2135 | *sw_prod = last; |
| 2136 | return last_cnt; |
| 2137 | } |
| 2138 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 2139 | static void cnic_chk_pkt_rings(struct cnic_local *cp) |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2140 | { |
| 2141 | u16 rx_cons = *cp->rx_cons_ptr; |
| 2142 | u16 tx_cons = *cp->tx_cons_ptr; |
| 2143 | |
| 2144 | if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) { |
| 2145 | cp->tx_cons = tx_cons; |
| 2146 | cp->rx_cons = rx_cons; |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 2147 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2148 | uio_event_notify(cp->cnic_uinfo); |
| 2149 | } |
| 2150 | } |
| 2151 | |
| 2152 | static int cnic_service_bnx2(void *data, void *status_blk) |
| 2153 | { |
| 2154 | struct cnic_dev *dev = data; |
| 2155 | struct status_block *sblk = status_blk; |
| 2156 | struct cnic_local *cp = dev->cnic_priv; |
| 2157 | u32 status_idx = sblk->status_idx; |
| 2158 | u16 hw_prod, sw_prod; |
| 2159 | int kcqe_cnt; |
| 2160 | |
| 2161 | if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) |
| 2162 | return status_idx; |
| 2163 | |
| 2164 | cp->kwq_con_idx = *cp->kwq_con_idx_ptr; |
| 2165 | |
| 2166 | hw_prod = sblk->status_completion_producer_index; |
| 2167 | sw_prod = cp->kcq_prod_idx; |
| 2168 | while (sw_prod != hw_prod) { |
| 2169 | kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod); |
| 2170 | if (kcqe_cnt == 0) |
| 2171 | goto done; |
| 2172 | |
| 2173 | service_kcqes(dev, kcqe_cnt); |
| 2174 | |
| 2175 | /* Tell compiler that status_blk fields can change. */ |
| 2176 | barrier(); |
| 2177 | if (status_idx != sblk->status_idx) { |
| 2178 | status_idx = sblk->status_idx; |
| 2179 | cp->kwq_con_idx = *cp->kwq_con_idx_ptr; |
| 2180 | hw_prod = sblk->status_completion_producer_index; |
| 2181 | } else |
| 2182 | break; |
| 2183 | } |
| 2184 | |
| 2185 | done: |
| 2186 | CNIC_WR16(dev, cp->kcq_io_addr, sw_prod); |
| 2187 | |
| 2188 | cp->kcq_prod_idx = sw_prod; |
| 2189 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 2190 | cnic_chk_pkt_rings(cp); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2191 | return status_idx; |
| 2192 | } |
| 2193 | |
| 2194 | static void cnic_service_bnx2_msix(unsigned long data) |
| 2195 | { |
| 2196 | struct cnic_dev *dev = (struct cnic_dev *) data; |
| 2197 | struct cnic_local *cp = dev->cnic_priv; |
| 2198 | struct status_block_msix *status_blk = cp->bnx2_status_blk; |
| 2199 | u32 status_idx = status_blk->status_idx; |
| 2200 | u16 hw_prod, sw_prod; |
| 2201 | int kcqe_cnt; |
| 2202 | |
| 2203 | cp->kwq_con_idx = status_blk->status_cmd_consumer_index; |
| 2204 | |
| 2205 | hw_prod = status_blk->status_completion_producer_index; |
| 2206 | sw_prod = cp->kcq_prod_idx; |
| 2207 | while (sw_prod != hw_prod) { |
| 2208 | kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod); |
| 2209 | if (kcqe_cnt == 0) |
| 2210 | goto done; |
| 2211 | |
| 2212 | service_kcqes(dev, kcqe_cnt); |
| 2213 | |
| 2214 | /* Tell compiler that status_blk fields can change. */ |
| 2215 | barrier(); |
| 2216 | if (status_idx != status_blk->status_idx) { |
| 2217 | status_idx = status_blk->status_idx; |
| 2218 | cp->kwq_con_idx = status_blk->status_cmd_consumer_index; |
| 2219 | hw_prod = status_blk->status_completion_producer_index; |
| 2220 | } else |
| 2221 | break; |
| 2222 | } |
| 2223 | |
| 2224 | done: |
| 2225 | CNIC_WR16(dev, cp->kcq_io_addr, sw_prod); |
| 2226 | cp->kcq_prod_idx = sw_prod; |
| 2227 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 2228 | cnic_chk_pkt_rings(cp); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2229 | |
| 2230 | cp->last_status_idx = status_idx; |
| 2231 | CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | |
| 2232 | BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx); |
| 2233 | } |
| 2234 | |
| 2235 | static irqreturn_t cnic_irq(int irq, void *dev_instance) |
| 2236 | { |
| 2237 | struct cnic_dev *dev = dev_instance; |
| 2238 | struct cnic_local *cp = dev->cnic_priv; |
| 2239 | u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX; |
| 2240 | |
| 2241 | if (cp->ack_int) |
| 2242 | cp->ack_int(dev); |
| 2243 | |
| 2244 | prefetch(cp->status_blk); |
| 2245 | prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]); |
| 2246 | |
| 2247 | if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) |
| 2248 | tasklet_schedule(&cp->cnic_irq_task); |
| 2249 | |
| 2250 | return IRQ_HANDLED; |
| 2251 | } |
| 2252 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 2253 | static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm, |
| 2254 | u16 index, u8 op, u8 update) |
| 2255 | { |
| 2256 | struct cnic_local *cp = dev->cnic_priv; |
| 2257 | u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 + |
| 2258 | COMMAND_REG_INT_ACK); |
| 2259 | struct igu_ack_register igu_ack; |
| 2260 | |
| 2261 | igu_ack.status_block_index = index; |
| 2262 | igu_ack.sb_id_and_flags = |
| 2263 | ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) | |
| 2264 | (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) | |
| 2265 | (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) | |
| 2266 | (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT)); |
| 2267 | |
| 2268 | CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack)); |
| 2269 | } |
| 2270 | |
| 2271 | static void cnic_ack_bnx2x_msix(struct cnic_dev *dev) |
| 2272 | { |
| 2273 | struct cnic_local *cp = dev->cnic_priv; |
| 2274 | |
| 2275 | cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID, 0, |
| 2276 | IGU_INT_DISABLE, 0); |
| 2277 | } |
| 2278 | |
| 2279 | static void cnic_service_bnx2x_bh(unsigned long data) |
| 2280 | { |
| 2281 | struct cnic_dev *dev = (struct cnic_dev *) data; |
| 2282 | struct cnic_local *cp = dev->cnic_priv; |
| 2283 | u16 hw_prod, sw_prod; |
| 2284 | struct cstorm_status_block_c *sblk = |
| 2285 | &cp->bnx2x_status_blk->c_status_block; |
| 2286 | u32 status_idx = sblk->status_block_index; |
| 2287 | int kcqe_cnt; |
| 2288 | |
| 2289 | if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) |
| 2290 | return; |
| 2291 | |
| 2292 | hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS]; |
| 2293 | hw_prod = cp->hw_idx(hw_prod); |
| 2294 | sw_prod = cp->kcq_prod_idx; |
| 2295 | while (sw_prod != hw_prod) { |
| 2296 | kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod); |
| 2297 | if (kcqe_cnt == 0) |
| 2298 | goto done; |
| 2299 | |
| 2300 | service_kcqes(dev, kcqe_cnt); |
| 2301 | |
| 2302 | /* Tell compiler that sblk fields can change. */ |
| 2303 | barrier(); |
| 2304 | if (status_idx == sblk->status_block_index) |
| 2305 | break; |
| 2306 | |
| 2307 | status_idx = sblk->status_block_index; |
| 2308 | hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS]; |
| 2309 | hw_prod = cp->hw_idx(hw_prod); |
| 2310 | } |
| 2311 | |
| 2312 | done: |
| 2313 | CNIC_WR16(dev, cp->kcq_io_addr, sw_prod + MAX_KCQ_IDX); |
| 2314 | cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID, |
| 2315 | status_idx, IGU_INT_ENABLE, 1); |
| 2316 | |
| 2317 | cp->kcq_prod_idx = sw_prod; |
| 2318 | return; |
| 2319 | } |
| 2320 | |
| 2321 | static int cnic_service_bnx2x(void *data, void *status_blk) |
| 2322 | { |
| 2323 | struct cnic_dev *dev = data; |
| 2324 | struct cnic_local *cp = dev->cnic_priv; |
| 2325 | u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX; |
| 2326 | |
| 2327 | prefetch(cp->status_blk); |
| 2328 | prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]); |
| 2329 | |
| 2330 | if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) |
| 2331 | tasklet_schedule(&cp->cnic_irq_task); |
| 2332 | |
| 2333 | cnic_chk_pkt_rings(cp); |
| 2334 | |
| 2335 | return 0; |
| 2336 | } |
| 2337 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2338 | static void cnic_ulp_stop(struct cnic_dev *dev) |
| 2339 | { |
| 2340 | struct cnic_local *cp = dev->cnic_priv; |
| 2341 | int if_type; |
| 2342 | |
Michael Chan | 6d7760a | 2009-07-27 11:25:58 -0700 | [diff] [blame] | 2343 | if (cp->cnic_uinfo) |
| 2344 | cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL); |
| 2345 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2346 | for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { |
| 2347 | struct cnic_ulp_ops *ulp_ops; |
| 2348 | |
Michael Chan | 681dbd7 | 2009-08-14 15:49:46 +0000 | [diff] [blame] | 2349 | mutex_lock(&cnic_lock); |
| 2350 | ulp_ops = cp->ulp_ops[if_type]; |
| 2351 | if (!ulp_ops) { |
| 2352 | mutex_unlock(&cnic_lock); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2353 | continue; |
Michael Chan | 681dbd7 | 2009-08-14 15:49:46 +0000 | [diff] [blame] | 2354 | } |
| 2355 | set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]); |
| 2356 | mutex_unlock(&cnic_lock); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2357 | |
| 2358 | if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type])) |
| 2359 | ulp_ops->cnic_stop(cp->ulp_handle[if_type]); |
Michael Chan | 681dbd7 | 2009-08-14 15:49:46 +0000 | [diff] [blame] | 2360 | |
| 2361 | clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2362 | } |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2363 | } |
| 2364 | |
| 2365 | static void cnic_ulp_start(struct cnic_dev *dev) |
| 2366 | { |
| 2367 | struct cnic_local *cp = dev->cnic_priv; |
| 2368 | int if_type; |
| 2369 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2370 | for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { |
| 2371 | struct cnic_ulp_ops *ulp_ops; |
| 2372 | |
Michael Chan | 681dbd7 | 2009-08-14 15:49:46 +0000 | [diff] [blame] | 2373 | mutex_lock(&cnic_lock); |
| 2374 | ulp_ops = cp->ulp_ops[if_type]; |
| 2375 | if (!ulp_ops || !ulp_ops->cnic_start) { |
| 2376 | mutex_unlock(&cnic_lock); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2377 | continue; |
Michael Chan | 681dbd7 | 2009-08-14 15:49:46 +0000 | [diff] [blame] | 2378 | } |
| 2379 | set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]); |
| 2380 | mutex_unlock(&cnic_lock); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2381 | |
| 2382 | if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type])) |
| 2383 | ulp_ops->cnic_start(cp->ulp_handle[if_type]); |
Michael Chan | 681dbd7 | 2009-08-14 15:49:46 +0000 | [diff] [blame] | 2384 | |
| 2385 | clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2386 | } |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2387 | } |
| 2388 | |
| 2389 | static int cnic_ctl(void *data, struct cnic_ctl_info *info) |
| 2390 | { |
| 2391 | struct cnic_dev *dev = data; |
| 2392 | |
| 2393 | switch (info->cmd) { |
| 2394 | case CNIC_CTL_STOP_CMD: |
| 2395 | cnic_hold(dev); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2396 | |
| 2397 | cnic_ulp_stop(dev); |
| 2398 | cnic_stop_hw(dev); |
| 2399 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2400 | cnic_put(dev); |
| 2401 | break; |
| 2402 | case CNIC_CTL_START_CMD: |
| 2403 | cnic_hold(dev); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2404 | |
| 2405 | if (!cnic_start_hw(dev)) |
| 2406 | cnic_ulp_start(dev); |
| 2407 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2408 | cnic_put(dev); |
| 2409 | break; |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 2410 | case CNIC_CTL_COMPLETION_CMD: { |
| 2411 | u32 cid = BNX2X_SW_CID(info->data.comp.cid); |
| 2412 | u32 l5_cid; |
| 2413 | struct cnic_local *cp = dev->cnic_priv; |
| 2414 | |
| 2415 | if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) { |
| 2416 | struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; |
| 2417 | |
| 2418 | ctx->wait_cond = 1; |
| 2419 | wake_up(&ctx->waitq); |
| 2420 | } |
| 2421 | break; |
| 2422 | } |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2423 | default: |
| 2424 | return -EINVAL; |
| 2425 | } |
| 2426 | return 0; |
| 2427 | } |
| 2428 | |
| 2429 | static void cnic_ulp_init(struct cnic_dev *dev) |
| 2430 | { |
| 2431 | int i; |
| 2432 | struct cnic_local *cp = dev->cnic_priv; |
| 2433 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2434 | for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) { |
| 2435 | struct cnic_ulp_ops *ulp_ops; |
| 2436 | |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 2437 | mutex_lock(&cnic_lock); |
| 2438 | ulp_ops = cnic_ulp_tbl[i]; |
| 2439 | if (!ulp_ops || !ulp_ops->cnic_init) { |
| 2440 | mutex_unlock(&cnic_lock); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2441 | continue; |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 2442 | } |
| 2443 | ulp_get(ulp_ops); |
| 2444 | mutex_unlock(&cnic_lock); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2445 | |
| 2446 | if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i])) |
| 2447 | ulp_ops->cnic_init(dev); |
| 2448 | |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 2449 | ulp_put(ulp_ops); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2450 | } |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2451 | } |
| 2452 | |
| 2453 | static void cnic_ulp_exit(struct cnic_dev *dev) |
| 2454 | { |
| 2455 | int i; |
| 2456 | struct cnic_local *cp = dev->cnic_priv; |
| 2457 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2458 | for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) { |
| 2459 | struct cnic_ulp_ops *ulp_ops; |
| 2460 | |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 2461 | mutex_lock(&cnic_lock); |
| 2462 | ulp_ops = cnic_ulp_tbl[i]; |
| 2463 | if (!ulp_ops || !ulp_ops->cnic_exit) { |
| 2464 | mutex_unlock(&cnic_lock); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2465 | continue; |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 2466 | } |
| 2467 | ulp_get(ulp_ops); |
| 2468 | mutex_unlock(&cnic_lock); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2469 | |
| 2470 | if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i])) |
| 2471 | ulp_ops->cnic_exit(dev); |
| 2472 | |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 2473 | ulp_put(ulp_ops); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2474 | } |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2475 | } |
| 2476 | |
| 2477 | static int cnic_cm_offload_pg(struct cnic_sock *csk) |
| 2478 | { |
| 2479 | struct cnic_dev *dev = csk->dev; |
| 2480 | struct l4_kwq_offload_pg *l4kwqe; |
| 2481 | struct kwqe *wqes[1]; |
| 2482 | |
| 2483 | l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1; |
| 2484 | memset(l4kwqe, 0, sizeof(*l4kwqe)); |
| 2485 | wqes[0] = (struct kwqe *) l4kwqe; |
| 2486 | |
| 2487 | l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG; |
| 2488 | l4kwqe->flags = |
| 2489 | L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT; |
| 2490 | l4kwqe->l2hdr_nbytes = ETH_HLEN; |
| 2491 | |
| 2492 | l4kwqe->da0 = csk->ha[0]; |
| 2493 | l4kwqe->da1 = csk->ha[1]; |
| 2494 | l4kwqe->da2 = csk->ha[2]; |
| 2495 | l4kwqe->da3 = csk->ha[3]; |
| 2496 | l4kwqe->da4 = csk->ha[4]; |
| 2497 | l4kwqe->da5 = csk->ha[5]; |
| 2498 | |
| 2499 | l4kwqe->sa0 = dev->mac_addr[0]; |
| 2500 | l4kwqe->sa1 = dev->mac_addr[1]; |
| 2501 | l4kwqe->sa2 = dev->mac_addr[2]; |
| 2502 | l4kwqe->sa3 = dev->mac_addr[3]; |
| 2503 | l4kwqe->sa4 = dev->mac_addr[4]; |
| 2504 | l4kwqe->sa5 = dev->mac_addr[5]; |
| 2505 | |
| 2506 | l4kwqe->etype = ETH_P_IP; |
| 2507 | l4kwqe->ipid_count = DEF_IPID_COUNT; |
| 2508 | l4kwqe->host_opaque = csk->l5_cid; |
| 2509 | |
| 2510 | if (csk->vlan_id) { |
| 2511 | l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING; |
| 2512 | l4kwqe->vlan_tag = csk->vlan_id; |
| 2513 | l4kwqe->l2hdr_nbytes += 4; |
| 2514 | } |
| 2515 | |
| 2516 | return dev->submit_kwqes(dev, wqes, 1); |
| 2517 | } |
| 2518 | |
| 2519 | static int cnic_cm_update_pg(struct cnic_sock *csk) |
| 2520 | { |
| 2521 | struct cnic_dev *dev = csk->dev; |
| 2522 | struct l4_kwq_update_pg *l4kwqe; |
| 2523 | struct kwqe *wqes[1]; |
| 2524 | |
| 2525 | l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1; |
| 2526 | memset(l4kwqe, 0, sizeof(*l4kwqe)); |
| 2527 | wqes[0] = (struct kwqe *) l4kwqe; |
| 2528 | |
| 2529 | l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG; |
| 2530 | l4kwqe->flags = |
| 2531 | L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT; |
| 2532 | l4kwqe->pg_cid = csk->pg_cid; |
| 2533 | |
| 2534 | l4kwqe->da0 = csk->ha[0]; |
| 2535 | l4kwqe->da1 = csk->ha[1]; |
| 2536 | l4kwqe->da2 = csk->ha[2]; |
| 2537 | l4kwqe->da3 = csk->ha[3]; |
| 2538 | l4kwqe->da4 = csk->ha[4]; |
| 2539 | l4kwqe->da5 = csk->ha[5]; |
| 2540 | |
| 2541 | l4kwqe->pg_host_opaque = csk->l5_cid; |
| 2542 | l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA; |
| 2543 | |
| 2544 | return dev->submit_kwqes(dev, wqes, 1); |
| 2545 | } |
| 2546 | |
| 2547 | static int cnic_cm_upload_pg(struct cnic_sock *csk) |
| 2548 | { |
| 2549 | struct cnic_dev *dev = csk->dev; |
| 2550 | struct l4_kwq_upload *l4kwqe; |
| 2551 | struct kwqe *wqes[1]; |
| 2552 | |
| 2553 | l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1; |
| 2554 | memset(l4kwqe, 0, sizeof(*l4kwqe)); |
| 2555 | wqes[0] = (struct kwqe *) l4kwqe; |
| 2556 | |
| 2557 | l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG; |
| 2558 | l4kwqe->flags = |
| 2559 | L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT; |
| 2560 | l4kwqe->cid = csk->pg_cid; |
| 2561 | |
| 2562 | return dev->submit_kwqes(dev, wqes, 1); |
| 2563 | } |
| 2564 | |
| 2565 | static int cnic_cm_conn_req(struct cnic_sock *csk) |
| 2566 | { |
| 2567 | struct cnic_dev *dev = csk->dev; |
| 2568 | struct l4_kwq_connect_req1 *l4kwqe1; |
| 2569 | struct l4_kwq_connect_req2 *l4kwqe2; |
| 2570 | struct l4_kwq_connect_req3 *l4kwqe3; |
| 2571 | struct kwqe *wqes[3]; |
| 2572 | u8 tcp_flags = 0; |
| 2573 | int num_wqes = 2; |
| 2574 | |
| 2575 | l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1; |
| 2576 | l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2; |
| 2577 | l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3; |
| 2578 | memset(l4kwqe1, 0, sizeof(*l4kwqe1)); |
| 2579 | memset(l4kwqe2, 0, sizeof(*l4kwqe2)); |
| 2580 | memset(l4kwqe3, 0, sizeof(*l4kwqe3)); |
| 2581 | |
| 2582 | l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3; |
| 2583 | l4kwqe3->flags = |
| 2584 | L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT; |
| 2585 | l4kwqe3->ka_timeout = csk->ka_timeout; |
| 2586 | l4kwqe3->ka_interval = csk->ka_interval; |
| 2587 | l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count; |
| 2588 | l4kwqe3->tos = csk->tos; |
| 2589 | l4kwqe3->ttl = csk->ttl; |
| 2590 | l4kwqe3->snd_seq_scale = csk->snd_seq_scale; |
| 2591 | l4kwqe3->pmtu = csk->mtu; |
| 2592 | l4kwqe3->rcv_buf = csk->rcv_buf; |
| 2593 | l4kwqe3->snd_buf = csk->snd_buf; |
| 2594 | l4kwqe3->seed = csk->seed; |
| 2595 | |
| 2596 | wqes[0] = (struct kwqe *) l4kwqe1; |
| 2597 | if (test_bit(SK_F_IPV6, &csk->flags)) { |
| 2598 | wqes[1] = (struct kwqe *) l4kwqe2; |
| 2599 | wqes[2] = (struct kwqe *) l4kwqe3; |
| 2600 | num_wqes = 3; |
| 2601 | |
| 2602 | l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6; |
| 2603 | l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2; |
| 2604 | l4kwqe2->flags = |
| 2605 | L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT | |
| 2606 | L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT; |
| 2607 | l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]); |
| 2608 | l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]); |
| 2609 | l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]); |
| 2610 | l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]); |
| 2611 | l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]); |
| 2612 | l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]); |
| 2613 | l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) - |
| 2614 | sizeof(struct tcphdr); |
| 2615 | } else { |
| 2616 | wqes[1] = (struct kwqe *) l4kwqe3; |
| 2617 | l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) - |
| 2618 | sizeof(struct tcphdr); |
| 2619 | } |
| 2620 | |
| 2621 | l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1; |
| 2622 | l4kwqe1->flags = |
| 2623 | (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) | |
| 2624 | L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT; |
| 2625 | l4kwqe1->cid = csk->cid; |
| 2626 | l4kwqe1->pg_cid = csk->pg_cid; |
| 2627 | l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]); |
| 2628 | l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]); |
| 2629 | l4kwqe1->src_port = be16_to_cpu(csk->src_port); |
| 2630 | l4kwqe1->dst_port = be16_to_cpu(csk->dst_port); |
| 2631 | if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK) |
| 2632 | tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK; |
| 2633 | if (csk->tcp_flags & SK_TCP_KEEP_ALIVE) |
| 2634 | tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE; |
| 2635 | if (csk->tcp_flags & SK_TCP_NAGLE) |
| 2636 | tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE; |
| 2637 | if (csk->tcp_flags & SK_TCP_TIMESTAMP) |
| 2638 | tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP; |
| 2639 | if (csk->tcp_flags & SK_TCP_SACK) |
| 2640 | tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK; |
| 2641 | if (csk->tcp_flags & SK_TCP_SEG_SCALING) |
| 2642 | tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING; |
| 2643 | |
| 2644 | l4kwqe1->tcp_flags = tcp_flags; |
| 2645 | |
| 2646 | return dev->submit_kwqes(dev, wqes, num_wqes); |
| 2647 | } |
| 2648 | |
| 2649 | static int cnic_cm_close_req(struct cnic_sock *csk) |
| 2650 | { |
| 2651 | struct cnic_dev *dev = csk->dev; |
| 2652 | struct l4_kwq_close_req *l4kwqe; |
| 2653 | struct kwqe *wqes[1]; |
| 2654 | |
| 2655 | l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2; |
| 2656 | memset(l4kwqe, 0, sizeof(*l4kwqe)); |
| 2657 | wqes[0] = (struct kwqe *) l4kwqe; |
| 2658 | |
| 2659 | l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE; |
| 2660 | l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT; |
| 2661 | l4kwqe->cid = csk->cid; |
| 2662 | |
| 2663 | return dev->submit_kwqes(dev, wqes, 1); |
| 2664 | } |
| 2665 | |
| 2666 | static int cnic_cm_abort_req(struct cnic_sock *csk) |
| 2667 | { |
| 2668 | struct cnic_dev *dev = csk->dev; |
| 2669 | struct l4_kwq_reset_req *l4kwqe; |
| 2670 | struct kwqe *wqes[1]; |
| 2671 | |
| 2672 | l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2; |
| 2673 | memset(l4kwqe, 0, sizeof(*l4kwqe)); |
| 2674 | wqes[0] = (struct kwqe *) l4kwqe; |
| 2675 | |
| 2676 | l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET; |
| 2677 | l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT; |
| 2678 | l4kwqe->cid = csk->cid; |
| 2679 | |
| 2680 | return dev->submit_kwqes(dev, wqes, 1); |
| 2681 | } |
| 2682 | |
| 2683 | static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid, |
| 2684 | u32 l5_cid, struct cnic_sock **csk, void *context) |
| 2685 | { |
| 2686 | struct cnic_local *cp = dev->cnic_priv; |
| 2687 | struct cnic_sock *csk1; |
| 2688 | |
| 2689 | if (l5_cid >= MAX_CM_SK_TBL_SZ) |
| 2690 | return -EINVAL; |
| 2691 | |
| 2692 | csk1 = &cp->csk_tbl[l5_cid]; |
| 2693 | if (atomic_read(&csk1->ref_count)) |
| 2694 | return -EAGAIN; |
| 2695 | |
| 2696 | if (test_and_set_bit(SK_F_INUSE, &csk1->flags)) |
| 2697 | return -EBUSY; |
| 2698 | |
| 2699 | csk1->dev = dev; |
| 2700 | csk1->cid = cid; |
| 2701 | csk1->l5_cid = l5_cid; |
| 2702 | csk1->ulp_type = ulp_type; |
| 2703 | csk1->context = context; |
| 2704 | |
| 2705 | csk1->ka_timeout = DEF_KA_TIMEOUT; |
| 2706 | csk1->ka_interval = DEF_KA_INTERVAL; |
| 2707 | csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT; |
| 2708 | csk1->tos = DEF_TOS; |
| 2709 | csk1->ttl = DEF_TTL; |
| 2710 | csk1->snd_seq_scale = DEF_SND_SEQ_SCALE; |
| 2711 | csk1->rcv_buf = DEF_RCV_BUF; |
| 2712 | csk1->snd_buf = DEF_SND_BUF; |
| 2713 | csk1->seed = DEF_SEED; |
| 2714 | |
| 2715 | *csk = csk1; |
| 2716 | return 0; |
| 2717 | } |
| 2718 | |
| 2719 | static void cnic_cm_cleanup(struct cnic_sock *csk) |
| 2720 | { |
| 2721 | if (csk->src_port) { |
| 2722 | struct cnic_dev *dev = csk->dev; |
| 2723 | struct cnic_local *cp = dev->cnic_priv; |
| 2724 | |
| 2725 | cnic_free_id(&cp->csk_port_tbl, csk->src_port); |
| 2726 | csk->src_port = 0; |
| 2727 | } |
| 2728 | } |
| 2729 | |
| 2730 | static void cnic_close_conn(struct cnic_sock *csk) |
| 2731 | { |
| 2732 | if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) { |
| 2733 | cnic_cm_upload_pg(csk); |
| 2734 | clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags); |
| 2735 | } |
| 2736 | cnic_cm_cleanup(csk); |
| 2737 | } |
| 2738 | |
| 2739 | static int cnic_cm_destroy(struct cnic_sock *csk) |
| 2740 | { |
| 2741 | if (!cnic_in_use(csk)) |
| 2742 | return -EINVAL; |
| 2743 | |
| 2744 | csk_hold(csk); |
| 2745 | clear_bit(SK_F_INUSE, &csk->flags); |
| 2746 | smp_mb__after_clear_bit(); |
| 2747 | while (atomic_read(&csk->ref_count) != 1) |
| 2748 | msleep(1); |
| 2749 | cnic_cm_cleanup(csk); |
| 2750 | |
| 2751 | csk->flags = 0; |
| 2752 | csk_put(csk); |
| 2753 | return 0; |
| 2754 | } |
| 2755 | |
| 2756 | static inline u16 cnic_get_vlan(struct net_device *dev, |
| 2757 | struct net_device **vlan_dev) |
| 2758 | { |
| 2759 | if (dev->priv_flags & IFF_802_1Q_VLAN) { |
| 2760 | *vlan_dev = vlan_dev_real_dev(dev); |
| 2761 | return vlan_dev_vlan_id(dev); |
| 2762 | } |
| 2763 | *vlan_dev = dev; |
| 2764 | return 0; |
| 2765 | } |
| 2766 | |
| 2767 | static int cnic_get_v4_route(struct sockaddr_in *dst_addr, |
| 2768 | struct dst_entry **dst) |
| 2769 | { |
Randy Dunlap | faea56c | 2009-06-12 11:43:48 -0700 | [diff] [blame] | 2770 | #if defined(CONFIG_INET) |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2771 | struct flowi fl; |
| 2772 | int err; |
| 2773 | struct rtable *rt; |
| 2774 | |
| 2775 | memset(&fl, 0, sizeof(fl)); |
| 2776 | fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr; |
| 2777 | |
| 2778 | err = ip_route_output_key(&init_net, &rt, &fl); |
| 2779 | if (!err) |
| 2780 | *dst = &rt->u.dst; |
| 2781 | return err; |
Randy Dunlap | faea56c | 2009-06-12 11:43:48 -0700 | [diff] [blame] | 2782 | #else |
| 2783 | return -ENETUNREACH; |
| 2784 | #endif |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2785 | } |
| 2786 | |
| 2787 | static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr, |
| 2788 | struct dst_entry **dst) |
| 2789 | { |
Randy Dunlap | faea56c | 2009-06-12 11:43:48 -0700 | [diff] [blame] | 2790 | #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE)) |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2791 | struct flowi fl; |
| 2792 | |
| 2793 | memset(&fl, 0, sizeof(fl)); |
| 2794 | ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr); |
| 2795 | if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL) |
| 2796 | fl.oif = dst_addr->sin6_scope_id; |
| 2797 | |
| 2798 | *dst = ip6_route_output(&init_net, NULL, &fl); |
| 2799 | if (*dst) |
| 2800 | return 0; |
| 2801 | #endif |
| 2802 | |
| 2803 | return -ENETUNREACH; |
| 2804 | } |
| 2805 | |
| 2806 | static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr, |
| 2807 | int ulp_type) |
| 2808 | { |
| 2809 | struct cnic_dev *dev = NULL; |
| 2810 | struct dst_entry *dst; |
| 2811 | struct net_device *netdev = NULL; |
| 2812 | int err = -ENETUNREACH; |
| 2813 | |
| 2814 | if (dst_addr->sin_family == AF_INET) |
| 2815 | err = cnic_get_v4_route(dst_addr, &dst); |
| 2816 | else if (dst_addr->sin_family == AF_INET6) { |
| 2817 | struct sockaddr_in6 *dst_addr6 = |
| 2818 | (struct sockaddr_in6 *) dst_addr; |
| 2819 | |
| 2820 | err = cnic_get_v6_route(dst_addr6, &dst); |
| 2821 | } else |
| 2822 | return NULL; |
| 2823 | |
| 2824 | if (err) |
| 2825 | return NULL; |
| 2826 | |
| 2827 | if (!dst->dev) |
| 2828 | goto done; |
| 2829 | |
| 2830 | cnic_get_vlan(dst->dev, &netdev); |
| 2831 | |
| 2832 | dev = cnic_from_netdev(netdev); |
| 2833 | |
| 2834 | done: |
| 2835 | dst_release(dst); |
| 2836 | if (dev) |
| 2837 | cnic_put(dev); |
| 2838 | return dev; |
| 2839 | } |
| 2840 | |
| 2841 | static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr) |
| 2842 | { |
| 2843 | struct cnic_dev *dev = csk->dev; |
| 2844 | struct cnic_local *cp = dev->cnic_priv; |
| 2845 | |
| 2846 | return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk); |
| 2847 | } |
| 2848 | |
| 2849 | static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr) |
| 2850 | { |
| 2851 | struct cnic_dev *dev = csk->dev; |
| 2852 | struct cnic_local *cp = dev->cnic_priv; |
| 2853 | int is_v6, err, rc = -ENETUNREACH; |
| 2854 | struct dst_entry *dst; |
| 2855 | struct net_device *realdev; |
| 2856 | u32 local_port; |
| 2857 | |
| 2858 | if (saddr->local.v6.sin6_family == AF_INET6 && |
| 2859 | saddr->remote.v6.sin6_family == AF_INET6) |
| 2860 | is_v6 = 1; |
| 2861 | else if (saddr->local.v4.sin_family == AF_INET && |
| 2862 | saddr->remote.v4.sin_family == AF_INET) |
| 2863 | is_v6 = 0; |
| 2864 | else |
| 2865 | return -EINVAL; |
| 2866 | |
| 2867 | clear_bit(SK_F_IPV6, &csk->flags); |
| 2868 | |
| 2869 | if (is_v6) { |
Randy Dunlap | faea56c | 2009-06-12 11:43:48 -0700 | [diff] [blame] | 2870 | #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE)) |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2871 | set_bit(SK_F_IPV6, &csk->flags); |
| 2872 | err = cnic_get_v6_route(&saddr->remote.v6, &dst); |
| 2873 | if (err) |
| 2874 | return err; |
| 2875 | |
| 2876 | if (!dst || dst->error || !dst->dev) |
| 2877 | goto err_out; |
| 2878 | |
| 2879 | memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr, |
| 2880 | sizeof(struct in6_addr)); |
| 2881 | csk->dst_port = saddr->remote.v6.sin6_port; |
| 2882 | local_port = saddr->local.v6.sin6_port; |
| 2883 | #else |
| 2884 | return rc; |
| 2885 | #endif |
| 2886 | |
| 2887 | } else { |
| 2888 | err = cnic_get_v4_route(&saddr->remote.v4, &dst); |
| 2889 | if (err) |
| 2890 | return err; |
| 2891 | |
| 2892 | if (!dst || dst->error || !dst->dev) |
| 2893 | goto err_out; |
| 2894 | |
| 2895 | csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr; |
| 2896 | csk->dst_port = saddr->remote.v4.sin_port; |
| 2897 | local_port = saddr->local.v4.sin_port; |
| 2898 | } |
| 2899 | |
| 2900 | csk->vlan_id = cnic_get_vlan(dst->dev, &realdev); |
| 2901 | if (realdev != dev->netdev) |
| 2902 | goto err_out; |
| 2903 | |
| 2904 | if (local_port >= CNIC_LOCAL_PORT_MIN && |
| 2905 | local_port < CNIC_LOCAL_PORT_MAX) { |
| 2906 | if (cnic_alloc_id(&cp->csk_port_tbl, local_port)) |
| 2907 | local_port = 0; |
| 2908 | } else |
| 2909 | local_port = 0; |
| 2910 | |
| 2911 | if (!local_port) { |
| 2912 | local_port = cnic_alloc_new_id(&cp->csk_port_tbl); |
| 2913 | if (local_port == -1) { |
| 2914 | rc = -ENOMEM; |
| 2915 | goto err_out; |
| 2916 | } |
| 2917 | } |
| 2918 | csk->src_port = local_port; |
| 2919 | |
| 2920 | csk->mtu = dst_mtu(dst); |
| 2921 | rc = 0; |
| 2922 | |
| 2923 | err_out: |
| 2924 | dst_release(dst); |
| 2925 | return rc; |
| 2926 | } |
| 2927 | |
| 2928 | static void cnic_init_csk_state(struct cnic_sock *csk) |
| 2929 | { |
| 2930 | csk->state = 0; |
| 2931 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); |
| 2932 | clear_bit(SK_F_CLOSING, &csk->flags); |
| 2933 | } |
| 2934 | |
| 2935 | static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr) |
| 2936 | { |
| 2937 | int err = 0; |
| 2938 | |
| 2939 | if (!cnic_in_use(csk)) |
| 2940 | return -EINVAL; |
| 2941 | |
| 2942 | if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags)) |
| 2943 | return -EINVAL; |
| 2944 | |
| 2945 | cnic_init_csk_state(csk); |
| 2946 | |
| 2947 | err = cnic_get_route(csk, saddr); |
| 2948 | if (err) |
| 2949 | goto err_out; |
| 2950 | |
| 2951 | err = cnic_resolve_addr(csk, saddr); |
| 2952 | if (!err) |
| 2953 | return 0; |
| 2954 | |
| 2955 | err_out: |
| 2956 | clear_bit(SK_F_CONNECT_START, &csk->flags); |
| 2957 | return err; |
| 2958 | } |
| 2959 | |
| 2960 | static int cnic_cm_abort(struct cnic_sock *csk) |
| 2961 | { |
| 2962 | struct cnic_local *cp = csk->dev->cnic_priv; |
| 2963 | u32 opcode; |
| 2964 | |
| 2965 | if (!cnic_in_use(csk)) |
| 2966 | return -EINVAL; |
| 2967 | |
| 2968 | if (cnic_abort_prep(csk)) |
| 2969 | return cnic_cm_abort_req(csk); |
| 2970 | |
| 2971 | /* Getting here means that we haven't started connect, or |
| 2972 | * connect was not successful. |
| 2973 | */ |
| 2974 | |
| 2975 | csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP; |
| 2976 | if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) |
| 2977 | opcode = csk->state; |
| 2978 | else |
| 2979 | opcode = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD; |
| 2980 | cp->close_conn(csk, opcode); |
| 2981 | |
| 2982 | return 0; |
| 2983 | } |
| 2984 | |
| 2985 | static int cnic_cm_close(struct cnic_sock *csk) |
| 2986 | { |
| 2987 | if (!cnic_in_use(csk)) |
| 2988 | return -EINVAL; |
| 2989 | |
| 2990 | if (cnic_close_prep(csk)) { |
| 2991 | csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP; |
| 2992 | return cnic_cm_close_req(csk); |
| 2993 | } |
| 2994 | return 0; |
| 2995 | } |
| 2996 | |
| 2997 | static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk, |
| 2998 | u8 opcode) |
| 2999 | { |
| 3000 | struct cnic_ulp_ops *ulp_ops; |
| 3001 | int ulp_type = csk->ulp_type; |
| 3002 | |
| 3003 | rcu_read_lock(); |
| 3004 | ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]); |
| 3005 | if (ulp_ops) { |
| 3006 | if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE) |
| 3007 | ulp_ops->cm_connect_complete(csk); |
| 3008 | else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) |
| 3009 | ulp_ops->cm_close_complete(csk); |
| 3010 | else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) |
| 3011 | ulp_ops->cm_remote_abort(csk); |
| 3012 | else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP) |
| 3013 | ulp_ops->cm_abort_complete(csk); |
| 3014 | else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED) |
| 3015 | ulp_ops->cm_remote_close(csk); |
| 3016 | } |
| 3017 | rcu_read_unlock(); |
| 3018 | } |
| 3019 | |
| 3020 | static int cnic_cm_set_pg(struct cnic_sock *csk) |
| 3021 | { |
| 3022 | if (cnic_offld_prep(csk)) { |
| 3023 | if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) |
| 3024 | cnic_cm_update_pg(csk); |
| 3025 | else |
| 3026 | cnic_cm_offload_pg(csk); |
| 3027 | } |
| 3028 | return 0; |
| 3029 | } |
| 3030 | |
| 3031 | static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe) |
| 3032 | { |
| 3033 | struct cnic_local *cp = dev->cnic_priv; |
| 3034 | u32 l5_cid = kcqe->pg_host_opaque; |
| 3035 | u8 opcode = kcqe->op_code; |
| 3036 | struct cnic_sock *csk = &cp->csk_tbl[l5_cid]; |
| 3037 | |
| 3038 | csk_hold(csk); |
| 3039 | if (!cnic_in_use(csk)) |
| 3040 | goto done; |
| 3041 | |
| 3042 | if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) { |
| 3043 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); |
| 3044 | goto done; |
| 3045 | } |
| 3046 | csk->pg_cid = kcqe->pg_cid; |
| 3047 | set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags); |
| 3048 | cnic_cm_conn_req(csk); |
| 3049 | |
| 3050 | done: |
| 3051 | csk_put(csk); |
| 3052 | } |
| 3053 | |
| 3054 | static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe) |
| 3055 | { |
| 3056 | struct cnic_local *cp = dev->cnic_priv; |
| 3057 | struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe; |
| 3058 | u8 opcode = l4kcqe->op_code; |
| 3059 | u32 l5_cid; |
| 3060 | struct cnic_sock *csk; |
| 3061 | |
| 3062 | if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG || |
| 3063 | opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) { |
| 3064 | cnic_cm_process_offld_pg(dev, l4kcqe); |
| 3065 | return; |
| 3066 | } |
| 3067 | |
| 3068 | l5_cid = l4kcqe->conn_id; |
| 3069 | if (opcode & 0x80) |
| 3070 | l5_cid = l4kcqe->cid; |
| 3071 | if (l5_cid >= MAX_CM_SK_TBL_SZ) |
| 3072 | return; |
| 3073 | |
| 3074 | csk = &cp->csk_tbl[l5_cid]; |
| 3075 | csk_hold(csk); |
| 3076 | |
| 3077 | if (!cnic_in_use(csk)) { |
| 3078 | csk_put(csk); |
| 3079 | return; |
| 3080 | } |
| 3081 | |
| 3082 | switch (opcode) { |
| 3083 | case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE: |
| 3084 | if (l4kcqe->status == 0) |
| 3085 | set_bit(SK_F_OFFLD_COMPLETE, &csk->flags); |
| 3086 | |
| 3087 | smp_mb__before_clear_bit(); |
| 3088 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); |
| 3089 | cnic_cm_upcall(cp, csk, opcode); |
| 3090 | break; |
| 3091 | |
| 3092 | case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED: |
| 3093 | if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) |
| 3094 | csk->state = opcode; |
| 3095 | /* fall through */ |
| 3096 | case L4_KCQE_OPCODE_VALUE_CLOSE_COMP: |
| 3097 | case L4_KCQE_OPCODE_VALUE_RESET_COMP: |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 3098 | case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE: |
| 3099 | case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD: |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 3100 | cp->close_conn(csk, opcode); |
| 3101 | break; |
| 3102 | |
| 3103 | case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED: |
| 3104 | cnic_cm_upcall(cp, csk, opcode); |
| 3105 | break; |
| 3106 | } |
| 3107 | csk_put(csk); |
| 3108 | } |
| 3109 | |
| 3110 | static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num) |
| 3111 | { |
| 3112 | struct cnic_dev *dev = data; |
| 3113 | int i; |
| 3114 | |
| 3115 | for (i = 0; i < num; i++) |
| 3116 | cnic_cm_process_kcqe(dev, kcqe[i]); |
| 3117 | } |
| 3118 | |
| 3119 | static struct cnic_ulp_ops cm_ulp_ops = { |
| 3120 | .indicate_kcqes = cnic_cm_indicate_kcqe, |
| 3121 | }; |
| 3122 | |
| 3123 | static void cnic_cm_free_mem(struct cnic_dev *dev) |
| 3124 | { |
| 3125 | struct cnic_local *cp = dev->cnic_priv; |
| 3126 | |
| 3127 | kfree(cp->csk_tbl); |
| 3128 | cp->csk_tbl = NULL; |
| 3129 | cnic_free_id_tbl(&cp->csk_port_tbl); |
| 3130 | } |
| 3131 | |
| 3132 | static int cnic_cm_alloc_mem(struct cnic_dev *dev) |
| 3133 | { |
| 3134 | struct cnic_local *cp = dev->cnic_priv; |
| 3135 | |
| 3136 | cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ, |
| 3137 | GFP_KERNEL); |
| 3138 | if (!cp->csk_tbl) |
| 3139 | return -ENOMEM; |
| 3140 | |
| 3141 | if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE, |
| 3142 | CNIC_LOCAL_PORT_MIN)) { |
| 3143 | cnic_cm_free_mem(dev); |
| 3144 | return -ENOMEM; |
| 3145 | } |
| 3146 | return 0; |
| 3147 | } |
| 3148 | |
| 3149 | static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode) |
| 3150 | { |
| 3151 | if ((opcode == csk->state) || |
| 3152 | (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED && |
| 3153 | csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)) { |
| 3154 | if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) |
| 3155 | return 1; |
| 3156 | } |
| 3157 | return 0; |
| 3158 | } |
| 3159 | |
| 3160 | static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode) |
| 3161 | { |
| 3162 | struct cnic_dev *dev = csk->dev; |
| 3163 | struct cnic_local *cp = dev->cnic_priv; |
| 3164 | |
| 3165 | clear_bit(SK_F_CONNECT_START, &csk->flags); |
| 3166 | if (cnic_ready_to_close(csk, opcode)) { |
| 3167 | cnic_close_conn(csk); |
| 3168 | cnic_cm_upcall(cp, csk, opcode); |
| 3169 | } |
| 3170 | } |
| 3171 | |
| 3172 | static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev) |
| 3173 | { |
| 3174 | } |
| 3175 | |
| 3176 | static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev) |
| 3177 | { |
| 3178 | u32 seed; |
| 3179 | |
| 3180 | get_random_bytes(&seed, 4); |
| 3181 | cnic_ctx_wr(dev, 45, 0, seed); |
| 3182 | return 0; |
| 3183 | } |
| 3184 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 3185 | static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode) |
| 3186 | { |
| 3187 | struct cnic_dev *dev = csk->dev; |
| 3188 | struct cnic_local *cp = dev->cnic_priv; |
| 3189 | struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid]; |
| 3190 | union l5cm_specific_data l5_data; |
| 3191 | u32 cmd = 0; |
| 3192 | int close_complete = 0; |
| 3193 | |
| 3194 | switch (opcode) { |
| 3195 | case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED: |
| 3196 | case L4_KCQE_OPCODE_VALUE_CLOSE_COMP: |
| 3197 | case L4_KCQE_OPCODE_VALUE_RESET_COMP: |
| 3198 | if (cnic_ready_to_close(csk, opcode)) |
| 3199 | cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE; |
| 3200 | break; |
| 3201 | case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE: |
| 3202 | cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD; |
| 3203 | break; |
| 3204 | case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD: |
| 3205 | close_complete = 1; |
| 3206 | break; |
| 3207 | } |
| 3208 | if (cmd) { |
| 3209 | memset(&l5_data, 0, sizeof(l5_data)); |
| 3210 | |
| 3211 | cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE, |
| 3212 | &l5_data); |
| 3213 | } else if (close_complete) { |
| 3214 | ctx->timestamp = jiffies; |
| 3215 | cnic_close_conn(csk); |
| 3216 | cnic_cm_upcall(cp, csk, csk->state); |
| 3217 | } |
| 3218 | } |
| 3219 | |
| 3220 | static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev) |
| 3221 | { |
| 3222 | } |
| 3223 | |
| 3224 | static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev) |
| 3225 | { |
| 3226 | struct cnic_local *cp = dev->cnic_priv; |
| 3227 | int func = CNIC_FUNC(cp); |
| 3228 | |
| 3229 | cnic_init_bnx2x_mac(dev); |
| 3230 | cnic_bnx2x_set_tcp_timestamp(dev, 1); |
| 3231 | |
| 3232 | CNIC_WR16(dev, BAR_XSTRORM_INTMEM + |
| 3233 | XSTORM_ISCSI_LOCAL_VLAN_OFFSET(func), 0); |
| 3234 | |
| 3235 | CNIC_WR(dev, BAR_XSTRORM_INTMEM + |
| 3236 | XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(func), 1); |
| 3237 | CNIC_WR(dev, BAR_XSTRORM_INTMEM + |
| 3238 | XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(func), |
| 3239 | DEF_MAX_DA_COUNT); |
| 3240 | |
| 3241 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 3242 | XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(func), DEF_TTL); |
| 3243 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 3244 | XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(func), DEF_TOS); |
| 3245 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 3246 | XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(func), 2); |
| 3247 | CNIC_WR(dev, BAR_XSTRORM_INTMEM + |
| 3248 | XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(func), DEF_SWS_TIMER); |
| 3249 | |
| 3250 | CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(func), |
| 3251 | DEF_MAX_CWND); |
| 3252 | return 0; |
| 3253 | } |
| 3254 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 3255 | static int cnic_cm_open(struct cnic_dev *dev) |
| 3256 | { |
| 3257 | struct cnic_local *cp = dev->cnic_priv; |
| 3258 | int err; |
| 3259 | |
| 3260 | err = cnic_cm_alloc_mem(dev); |
| 3261 | if (err) |
| 3262 | return err; |
| 3263 | |
| 3264 | err = cp->start_cm(dev); |
| 3265 | |
| 3266 | if (err) |
| 3267 | goto err_out; |
| 3268 | |
| 3269 | dev->cm_create = cnic_cm_create; |
| 3270 | dev->cm_destroy = cnic_cm_destroy; |
| 3271 | dev->cm_connect = cnic_cm_connect; |
| 3272 | dev->cm_abort = cnic_cm_abort; |
| 3273 | dev->cm_close = cnic_cm_close; |
| 3274 | dev->cm_select_dev = cnic_cm_select_dev; |
| 3275 | |
| 3276 | cp->ulp_handle[CNIC_ULP_L4] = dev; |
| 3277 | rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops); |
| 3278 | return 0; |
| 3279 | |
| 3280 | err_out: |
| 3281 | cnic_cm_free_mem(dev); |
| 3282 | return err; |
| 3283 | } |
| 3284 | |
| 3285 | static int cnic_cm_shutdown(struct cnic_dev *dev) |
| 3286 | { |
| 3287 | struct cnic_local *cp = dev->cnic_priv; |
| 3288 | int i; |
| 3289 | |
| 3290 | cp->stop_cm(dev); |
| 3291 | |
| 3292 | if (!cp->csk_tbl) |
| 3293 | return 0; |
| 3294 | |
| 3295 | for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) { |
| 3296 | struct cnic_sock *csk = &cp->csk_tbl[i]; |
| 3297 | |
| 3298 | clear_bit(SK_F_INUSE, &csk->flags); |
| 3299 | cnic_cm_cleanup(csk); |
| 3300 | } |
| 3301 | cnic_cm_free_mem(dev); |
| 3302 | |
| 3303 | return 0; |
| 3304 | } |
| 3305 | |
| 3306 | static void cnic_init_context(struct cnic_dev *dev, u32 cid) |
| 3307 | { |
| 3308 | struct cnic_local *cp = dev->cnic_priv; |
| 3309 | u32 cid_addr; |
| 3310 | int i; |
| 3311 | |
| 3312 | if (CHIP_NUM(cp) == CHIP_NUM_5709) |
| 3313 | return; |
| 3314 | |
| 3315 | cid_addr = GET_CID_ADDR(cid); |
| 3316 | |
| 3317 | for (i = 0; i < CTX_SIZE; i += 4) |
| 3318 | cnic_ctx_wr(dev, cid_addr, i, 0); |
| 3319 | } |
| 3320 | |
| 3321 | static int cnic_setup_5709_context(struct cnic_dev *dev, int valid) |
| 3322 | { |
| 3323 | struct cnic_local *cp = dev->cnic_priv; |
| 3324 | int ret = 0, i; |
| 3325 | u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0; |
| 3326 | |
| 3327 | if (CHIP_NUM(cp) != CHIP_NUM_5709) |
| 3328 | return 0; |
| 3329 | |
| 3330 | for (i = 0; i < cp->ctx_blks; i++) { |
| 3331 | int j; |
| 3332 | u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk; |
| 3333 | u32 val; |
| 3334 | |
| 3335 | memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE); |
| 3336 | |
| 3337 | CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0, |
| 3338 | (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit); |
| 3339 | CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1, |
| 3340 | (u64) cp->ctx_arr[i].mapping >> 32); |
| 3341 | CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx | |
| 3342 | BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ); |
| 3343 | for (j = 0; j < 10; j++) { |
| 3344 | |
| 3345 | val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL); |
| 3346 | if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ)) |
| 3347 | break; |
| 3348 | udelay(5); |
| 3349 | } |
| 3350 | if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) { |
| 3351 | ret = -EBUSY; |
| 3352 | break; |
| 3353 | } |
| 3354 | } |
| 3355 | return ret; |
| 3356 | } |
| 3357 | |
| 3358 | static void cnic_free_irq(struct cnic_dev *dev) |
| 3359 | { |
| 3360 | struct cnic_local *cp = dev->cnic_priv; |
| 3361 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 3362 | |
| 3363 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { |
| 3364 | cp->disable_int_sync(dev); |
| 3365 | tasklet_disable(&cp->cnic_irq_task); |
| 3366 | free_irq(ethdev->irq_arr[0].vector, dev); |
| 3367 | } |
| 3368 | } |
| 3369 | |
| 3370 | static int cnic_init_bnx2_irq(struct cnic_dev *dev) |
| 3371 | { |
| 3372 | struct cnic_local *cp = dev->cnic_priv; |
| 3373 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 3374 | |
| 3375 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { |
| 3376 | int err, i = 0; |
| 3377 | int sblk_num = cp->status_blk_num; |
| 3378 | u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) + |
| 3379 | BNX2_HC_SB_CONFIG_1; |
| 3380 | |
| 3381 | CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT); |
| 3382 | |
| 3383 | CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8); |
| 3384 | CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220); |
| 3385 | CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220); |
| 3386 | |
| 3387 | cp->bnx2_status_blk = cp->status_blk; |
| 3388 | cp->last_status_idx = cp->bnx2_status_blk->status_idx; |
| 3389 | tasklet_init(&cp->cnic_irq_task, &cnic_service_bnx2_msix, |
| 3390 | (unsigned long) dev); |
| 3391 | err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, |
| 3392 | "cnic", dev); |
| 3393 | if (err) { |
| 3394 | tasklet_disable(&cp->cnic_irq_task); |
| 3395 | return err; |
| 3396 | } |
| 3397 | while (cp->bnx2_status_blk->status_completion_producer_index && |
| 3398 | i < 10) { |
| 3399 | CNIC_WR(dev, BNX2_HC_COALESCE_NOW, |
| 3400 | 1 << (11 + sblk_num)); |
| 3401 | udelay(10); |
| 3402 | i++; |
| 3403 | barrier(); |
| 3404 | } |
| 3405 | if (cp->bnx2_status_blk->status_completion_producer_index) { |
| 3406 | cnic_free_irq(dev); |
| 3407 | goto failed; |
| 3408 | } |
| 3409 | |
| 3410 | } else { |
| 3411 | struct status_block *sblk = cp->status_blk; |
| 3412 | u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND); |
| 3413 | int i = 0; |
| 3414 | |
| 3415 | while (sblk->status_completion_producer_index && i < 10) { |
| 3416 | CNIC_WR(dev, BNX2_HC_COMMAND, |
| 3417 | hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT); |
| 3418 | udelay(10); |
| 3419 | i++; |
| 3420 | barrier(); |
| 3421 | } |
| 3422 | if (sblk->status_completion_producer_index) |
| 3423 | goto failed; |
| 3424 | |
| 3425 | } |
| 3426 | return 0; |
| 3427 | |
| 3428 | failed: |
| 3429 | printk(KERN_ERR PFX "%s: " "KCQ index not resetting to 0.\n", |
| 3430 | dev->netdev->name); |
| 3431 | return -EBUSY; |
| 3432 | } |
| 3433 | |
| 3434 | static void cnic_enable_bnx2_int(struct cnic_dev *dev) |
| 3435 | { |
| 3436 | struct cnic_local *cp = dev->cnic_priv; |
| 3437 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 3438 | |
| 3439 | if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)) |
| 3440 | return; |
| 3441 | |
| 3442 | CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | |
| 3443 | BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx); |
| 3444 | } |
| 3445 | |
| 3446 | static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev) |
| 3447 | { |
| 3448 | struct cnic_local *cp = dev->cnic_priv; |
| 3449 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 3450 | |
| 3451 | if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)) |
| 3452 | return; |
| 3453 | |
| 3454 | CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | |
| 3455 | BNX2_PCICFG_INT_ACK_CMD_MASK_INT); |
| 3456 | CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD); |
| 3457 | synchronize_irq(ethdev->irq_arr[0].vector); |
| 3458 | } |
| 3459 | |
| 3460 | static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev) |
| 3461 | { |
| 3462 | struct cnic_local *cp = dev->cnic_priv; |
| 3463 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 3464 | u32 cid_addr, tx_cid, sb_id; |
| 3465 | u32 val, offset0, offset1, offset2, offset3; |
| 3466 | int i; |
| 3467 | struct tx_bd *txbd; |
| 3468 | dma_addr_t buf_map; |
| 3469 | struct status_block *s_blk = cp->status_blk; |
| 3470 | |
| 3471 | sb_id = cp->status_blk_num; |
| 3472 | tx_cid = 20; |
| 3473 | cnic_init_context(dev, tx_cid); |
| 3474 | cnic_init_context(dev, tx_cid + 1); |
| 3475 | cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2; |
| 3476 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { |
| 3477 | struct status_block_msix *sblk = cp->status_blk; |
| 3478 | |
| 3479 | tx_cid = TX_TSS_CID + sb_id - 1; |
| 3480 | cnic_init_context(dev, tx_cid); |
| 3481 | CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) | |
| 3482 | (TX_TSS_CID << 7)); |
| 3483 | cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index; |
| 3484 | } |
| 3485 | cp->tx_cons = *cp->tx_cons_ptr; |
| 3486 | |
| 3487 | cid_addr = GET_CID_ADDR(tx_cid); |
| 3488 | if (CHIP_NUM(cp) == CHIP_NUM_5709) { |
| 3489 | u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40; |
| 3490 | |
| 3491 | for (i = 0; i < PHY_CTX_SIZE; i += 4) |
| 3492 | cnic_ctx_wr(dev, cid_addr2, i, 0); |
| 3493 | |
| 3494 | offset0 = BNX2_L2CTX_TYPE_XI; |
| 3495 | offset1 = BNX2_L2CTX_CMD_TYPE_XI; |
| 3496 | offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI; |
| 3497 | offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI; |
| 3498 | } else { |
| 3499 | offset0 = BNX2_L2CTX_TYPE; |
| 3500 | offset1 = BNX2_L2CTX_CMD_TYPE; |
| 3501 | offset2 = BNX2_L2CTX_TBDR_BHADDR_HI; |
| 3502 | offset3 = BNX2_L2CTX_TBDR_BHADDR_LO; |
| 3503 | } |
| 3504 | val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2; |
| 3505 | cnic_ctx_wr(dev, cid_addr, offset0, val); |
| 3506 | |
| 3507 | val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16); |
| 3508 | cnic_ctx_wr(dev, cid_addr, offset1, val); |
| 3509 | |
| 3510 | txbd = (struct tx_bd *) cp->l2_ring; |
| 3511 | |
| 3512 | buf_map = cp->l2_buf_map; |
| 3513 | for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) { |
| 3514 | txbd->tx_bd_haddr_hi = (u64) buf_map >> 32; |
| 3515 | txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff; |
| 3516 | } |
| 3517 | val = (u64) cp->l2_ring_map >> 32; |
| 3518 | cnic_ctx_wr(dev, cid_addr, offset2, val); |
| 3519 | txbd->tx_bd_haddr_hi = val; |
| 3520 | |
| 3521 | val = (u64) cp->l2_ring_map & 0xffffffff; |
| 3522 | cnic_ctx_wr(dev, cid_addr, offset3, val); |
| 3523 | txbd->tx_bd_haddr_lo = val; |
| 3524 | } |
| 3525 | |
| 3526 | static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev) |
| 3527 | { |
| 3528 | struct cnic_local *cp = dev->cnic_priv; |
| 3529 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 3530 | u32 cid_addr, sb_id, val, coal_reg, coal_val; |
| 3531 | int i; |
| 3532 | struct rx_bd *rxbd; |
| 3533 | struct status_block *s_blk = cp->status_blk; |
| 3534 | |
| 3535 | sb_id = cp->status_blk_num; |
| 3536 | cnic_init_context(dev, 2); |
| 3537 | cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2; |
| 3538 | coal_reg = BNX2_HC_COMMAND; |
| 3539 | coal_val = CNIC_RD(dev, coal_reg); |
| 3540 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { |
| 3541 | struct status_block_msix *sblk = cp->status_blk; |
| 3542 | |
| 3543 | cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index; |
| 3544 | coal_reg = BNX2_HC_COALESCE_NOW; |
| 3545 | coal_val = 1 << (11 + sb_id); |
| 3546 | } |
| 3547 | i = 0; |
| 3548 | while (!(*cp->rx_cons_ptr != 0) && i < 10) { |
| 3549 | CNIC_WR(dev, coal_reg, coal_val); |
| 3550 | udelay(10); |
| 3551 | i++; |
| 3552 | barrier(); |
| 3553 | } |
| 3554 | cp->rx_cons = *cp->rx_cons_ptr; |
| 3555 | |
| 3556 | cid_addr = GET_CID_ADDR(2); |
| 3557 | val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE | |
| 3558 | BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8); |
| 3559 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val); |
| 3560 | |
| 3561 | if (sb_id == 0) |
| 3562 | val = 2 << BNX2_L2CTX_STATUSB_NUM_SHIFT; |
| 3563 | else |
| 3564 | val = BNX2_L2CTX_STATUSB_NUM(sb_id); |
| 3565 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val); |
| 3566 | |
| 3567 | rxbd = (struct rx_bd *) (cp->l2_ring + BCM_PAGE_SIZE); |
| 3568 | for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) { |
| 3569 | dma_addr_t buf_map; |
| 3570 | int n = (i % cp->l2_rx_ring_size) + 1; |
| 3571 | |
| 3572 | buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size); |
| 3573 | rxbd->rx_bd_len = cp->l2_single_buf_size; |
| 3574 | rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END; |
| 3575 | rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32; |
| 3576 | rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff; |
| 3577 | } |
| 3578 | val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32; |
| 3579 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val); |
| 3580 | rxbd->rx_bd_haddr_hi = val; |
| 3581 | |
| 3582 | val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff; |
| 3583 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val); |
| 3584 | rxbd->rx_bd_haddr_lo = val; |
| 3585 | |
| 3586 | val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD); |
| 3587 | cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2)); |
| 3588 | } |
| 3589 | |
| 3590 | static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev) |
| 3591 | { |
| 3592 | struct kwqe *wqes[1], l2kwqe; |
| 3593 | |
| 3594 | memset(&l2kwqe, 0, sizeof(l2kwqe)); |
| 3595 | wqes[0] = &l2kwqe; |
| 3596 | l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_FLAGS_LAYER_SHIFT) | |
| 3597 | (L2_KWQE_OPCODE_VALUE_FLUSH << |
| 3598 | KWQE_OPCODE_SHIFT) | 2; |
| 3599 | dev->submit_kwqes(dev, wqes, 1); |
| 3600 | } |
| 3601 | |
| 3602 | static void cnic_set_bnx2_mac(struct cnic_dev *dev) |
| 3603 | { |
| 3604 | struct cnic_local *cp = dev->cnic_priv; |
| 3605 | u32 val; |
| 3606 | |
| 3607 | val = cp->func << 2; |
| 3608 | |
| 3609 | cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val); |
| 3610 | |
| 3611 | val = cnic_reg_rd_ind(dev, cp->shmem_base + |
| 3612 | BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER); |
| 3613 | dev->mac_addr[0] = (u8) (val >> 8); |
| 3614 | dev->mac_addr[1] = (u8) val; |
| 3615 | |
| 3616 | CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val); |
| 3617 | |
| 3618 | val = cnic_reg_rd_ind(dev, cp->shmem_base + |
| 3619 | BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER); |
| 3620 | dev->mac_addr[2] = (u8) (val >> 24); |
| 3621 | dev->mac_addr[3] = (u8) (val >> 16); |
| 3622 | dev->mac_addr[4] = (u8) (val >> 8); |
| 3623 | dev->mac_addr[5] = (u8) val; |
| 3624 | |
| 3625 | CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val); |
| 3626 | |
| 3627 | val = 4 | BNX2_RPM_SORT_USER2_BC_EN; |
| 3628 | if (CHIP_NUM(cp) != CHIP_NUM_5709) |
| 3629 | val |= BNX2_RPM_SORT_USER2_PROM_VLAN; |
| 3630 | |
| 3631 | CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0); |
| 3632 | CNIC_WR(dev, BNX2_RPM_SORT_USER2, val); |
| 3633 | CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA); |
| 3634 | } |
| 3635 | |
| 3636 | static int cnic_start_bnx2_hw(struct cnic_dev *dev) |
| 3637 | { |
| 3638 | struct cnic_local *cp = dev->cnic_priv; |
| 3639 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 3640 | struct status_block *sblk = cp->status_blk; |
| 3641 | u32 val; |
| 3642 | int err; |
| 3643 | |
| 3644 | cnic_set_bnx2_mac(dev); |
| 3645 | |
| 3646 | val = CNIC_RD(dev, BNX2_MQ_CONFIG); |
| 3647 | val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE; |
| 3648 | if (BCM_PAGE_BITS > 12) |
| 3649 | val |= (12 - 8) << 4; |
| 3650 | else |
| 3651 | val |= (BCM_PAGE_BITS - 8) << 4; |
| 3652 | |
| 3653 | CNIC_WR(dev, BNX2_MQ_CONFIG, val); |
| 3654 | |
| 3655 | CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8); |
| 3656 | CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220); |
| 3657 | CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220); |
| 3658 | |
| 3659 | err = cnic_setup_5709_context(dev, 1); |
| 3660 | if (err) |
| 3661 | return err; |
| 3662 | |
| 3663 | cnic_init_context(dev, KWQ_CID); |
| 3664 | cnic_init_context(dev, KCQ_CID); |
| 3665 | |
| 3666 | cp->kwq_cid_addr = GET_CID_ADDR(KWQ_CID); |
| 3667 | cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX; |
| 3668 | |
| 3669 | cp->max_kwq_idx = MAX_KWQ_IDX; |
| 3670 | cp->kwq_prod_idx = 0; |
| 3671 | cp->kwq_con_idx = 0; |
| 3672 | cp->cnic_local_flags |= CNIC_LCL_FL_KWQ_INIT; |
| 3673 | |
| 3674 | if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708) |
| 3675 | cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15; |
| 3676 | else |
| 3677 | cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index; |
| 3678 | |
| 3679 | /* Initialize the kernel work queue context. */ |
| 3680 | val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE | |
| 3681 | (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ; |
| 3682 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_TYPE, val); |
| 3683 | |
| 3684 | val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16; |
| 3685 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val); |
| 3686 | |
| 3687 | val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT; |
| 3688 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val); |
| 3689 | |
| 3690 | val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32); |
| 3691 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val); |
| 3692 | |
| 3693 | val = (u32) cp->kwq_info.pgtbl_map; |
| 3694 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val); |
| 3695 | |
| 3696 | cp->kcq_cid_addr = GET_CID_ADDR(KCQ_CID); |
| 3697 | cp->kcq_io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX; |
| 3698 | |
| 3699 | cp->kcq_prod_idx = 0; |
| 3700 | |
| 3701 | /* Initialize the kernel complete queue context. */ |
| 3702 | val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE | |
| 3703 | (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ; |
| 3704 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_TYPE, val); |
| 3705 | |
| 3706 | val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16; |
| 3707 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val); |
| 3708 | |
| 3709 | val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT; |
| 3710 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val); |
| 3711 | |
| 3712 | val = (u32) ((u64) cp->kcq_info.pgtbl_map >> 32); |
| 3713 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val); |
| 3714 | |
| 3715 | val = (u32) cp->kcq_info.pgtbl_map; |
| 3716 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val); |
| 3717 | |
| 3718 | cp->int_num = 0; |
| 3719 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { |
| 3720 | u32 sb_id = cp->status_blk_num; |
| 3721 | u32 sb = BNX2_L2CTX_STATUSB_NUM(sb_id); |
| 3722 | |
| 3723 | cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT; |
| 3724 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb); |
| 3725 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb); |
| 3726 | } |
| 3727 | |
| 3728 | /* Enable Commnad Scheduler notification when we write to the |
| 3729 | * host producer index of the kernel contexts. */ |
| 3730 | CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2); |
| 3731 | |
| 3732 | /* Enable Command Scheduler notification when we write to either |
| 3733 | * the Send Queue or Receive Queue producer indexes of the kernel |
| 3734 | * bypass contexts. */ |
| 3735 | CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7); |
| 3736 | CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7); |
| 3737 | |
| 3738 | /* Notify COM when the driver post an application buffer. */ |
| 3739 | CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000); |
| 3740 | |
| 3741 | /* Set the CP and COM doorbells. These two processors polls the |
| 3742 | * doorbell for a non zero value before running. This must be done |
| 3743 | * after setting up the kernel queue contexts. */ |
| 3744 | cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1); |
| 3745 | cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1); |
| 3746 | |
| 3747 | cnic_init_bnx2_tx_ring(dev); |
| 3748 | cnic_init_bnx2_rx_ring(dev); |
| 3749 | |
| 3750 | err = cnic_init_bnx2_irq(dev); |
| 3751 | if (err) { |
| 3752 | printk(KERN_ERR PFX "%s: cnic_init_irq failed\n", |
| 3753 | dev->netdev->name); |
| 3754 | cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0); |
| 3755 | cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0); |
| 3756 | return err; |
| 3757 | } |
| 3758 | |
| 3759 | return 0; |
| 3760 | } |
| 3761 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 3762 | static void cnic_setup_bnx2x_context(struct cnic_dev *dev) |
| 3763 | { |
| 3764 | struct cnic_local *cp = dev->cnic_priv; |
| 3765 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 3766 | u32 start_offset = ethdev->ctx_tbl_offset; |
| 3767 | int i; |
| 3768 | |
| 3769 | for (i = 0; i < cp->ctx_blks; i++) { |
| 3770 | struct cnic_ctx *ctx = &cp->ctx_arr[i]; |
| 3771 | dma_addr_t map = ctx->mapping; |
| 3772 | |
| 3773 | if (cp->ctx_align) { |
| 3774 | unsigned long mask = cp->ctx_align - 1; |
| 3775 | |
| 3776 | map = (map + mask) & ~mask; |
| 3777 | } |
| 3778 | |
| 3779 | cnic_ctx_tbl_wr(dev, start_offset + i, map); |
| 3780 | } |
| 3781 | } |
| 3782 | |
| 3783 | static int cnic_init_bnx2x_irq(struct cnic_dev *dev) |
| 3784 | { |
| 3785 | struct cnic_local *cp = dev->cnic_priv; |
| 3786 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 3787 | int err = 0; |
| 3788 | |
| 3789 | tasklet_init(&cp->cnic_irq_task, &cnic_service_bnx2x_bh, |
| 3790 | (unsigned long) dev); |
| 3791 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { |
| 3792 | err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, |
| 3793 | "cnic", dev); |
| 3794 | if (err) |
| 3795 | tasklet_disable(&cp->cnic_irq_task); |
| 3796 | } |
| 3797 | return err; |
| 3798 | } |
| 3799 | |
| 3800 | static void cnic_enable_bnx2x_int(struct cnic_dev *dev) |
| 3801 | { |
| 3802 | struct cnic_local *cp = dev->cnic_priv; |
| 3803 | u8 sb_id = cp->status_blk_num; |
| 3804 | int port = CNIC_PORT(cp); |
| 3805 | |
| 3806 | CNIC_WR8(dev, BAR_CSTRORM_INTMEM + |
| 3807 | CSTORM_SB_HC_TIMEOUT_C_OFFSET(port, sb_id, |
| 3808 | HC_INDEX_C_ISCSI_EQ_CONS), |
| 3809 | 64 / 12); |
| 3810 | CNIC_WR16(dev, BAR_CSTRORM_INTMEM + |
| 3811 | CSTORM_SB_HC_DISABLE_C_OFFSET(port, sb_id, |
| 3812 | HC_INDEX_C_ISCSI_EQ_CONS), 0); |
| 3813 | } |
| 3814 | |
| 3815 | static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev) |
| 3816 | { |
| 3817 | } |
| 3818 | |
| 3819 | static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev) |
| 3820 | { |
| 3821 | struct cnic_local *cp = dev->cnic_priv; |
| 3822 | union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) cp->l2_ring; |
| 3823 | struct eth_context *context; |
| 3824 | struct regpair context_addr; |
| 3825 | dma_addr_t buf_map; |
| 3826 | int func = CNIC_FUNC(cp); |
| 3827 | int port = CNIC_PORT(cp); |
| 3828 | int i; |
| 3829 | int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp)); |
| 3830 | u32 val; |
| 3831 | |
| 3832 | memset(txbd, 0, BCM_PAGE_SIZE); |
| 3833 | |
| 3834 | buf_map = cp->l2_buf_map; |
| 3835 | for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) { |
| 3836 | struct eth_tx_start_bd *start_bd = &txbd->start_bd; |
| 3837 | struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd); |
| 3838 | |
| 3839 | start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32); |
| 3840 | start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff); |
| 3841 | reg_bd->addr_hi = start_bd->addr_hi; |
| 3842 | reg_bd->addr_lo = start_bd->addr_lo + 0x10; |
| 3843 | start_bd->nbytes = cpu_to_le16(0x10); |
| 3844 | start_bd->nbd = cpu_to_le16(3); |
| 3845 | start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD; |
| 3846 | start_bd->general_data = (UNICAST_ADDRESS << |
| 3847 | ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT); |
| 3848 | start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT); |
| 3849 | |
| 3850 | } |
| 3851 | context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 1, &context_addr); |
| 3852 | |
| 3853 | val = (u64) cp->l2_ring_map >> 32; |
| 3854 | txbd->next_bd.addr_hi = cpu_to_le32(val); |
| 3855 | |
| 3856 | context->xstorm_st_context.tx_bd_page_base_hi = val; |
| 3857 | |
| 3858 | val = (u64) cp->l2_ring_map & 0xffffffff; |
| 3859 | txbd->next_bd.addr_lo = cpu_to_le32(val); |
| 3860 | |
| 3861 | context->xstorm_st_context.tx_bd_page_base_lo = val; |
| 3862 | |
| 3863 | context->cstorm_st_context.sb_index_number = |
| 3864 | HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS; |
| 3865 | context->cstorm_st_context.status_block_id = BNX2X_DEF_SB_ID; |
| 3866 | |
| 3867 | context->xstorm_st_context.statistics_data = (cli | |
| 3868 | XSTORM_ETH_ST_CONTEXT_STATISTICS_ENABLE); |
| 3869 | |
| 3870 | context->xstorm_ag_context.cdu_reserved = |
| 3871 | CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func), |
| 3872 | CDU_REGION_NUMBER_XCM_AG, |
| 3873 | ETH_CONNECTION_TYPE); |
| 3874 | |
| 3875 | /* reset xstorm per client statistics */ |
| 3876 | val = BAR_XSTRORM_INTMEM + |
| 3877 | XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli); |
| 3878 | for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++) |
| 3879 | CNIC_WR(dev, val + i * 4, 0); |
| 3880 | |
| 3881 | cp->tx_cons_ptr = |
| 3882 | &cp->bnx2x_def_status_blk->c_def_status_block.index_values[ |
| 3883 | HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS]; |
| 3884 | } |
| 3885 | |
| 3886 | static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev) |
| 3887 | { |
| 3888 | struct cnic_local *cp = dev->cnic_priv; |
| 3889 | struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (cp->l2_ring + |
| 3890 | BCM_PAGE_SIZE); |
| 3891 | struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *) |
| 3892 | (cp->l2_ring + (2 * BCM_PAGE_SIZE)); |
| 3893 | struct eth_context *context; |
| 3894 | struct regpair context_addr; |
| 3895 | int i; |
| 3896 | int port = CNIC_PORT(cp); |
| 3897 | int func = CNIC_FUNC(cp); |
| 3898 | int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp)); |
| 3899 | u32 val; |
| 3900 | struct tstorm_eth_client_config tstorm_client = {0}; |
| 3901 | |
| 3902 | for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) { |
| 3903 | dma_addr_t buf_map; |
| 3904 | int n = (i % cp->l2_rx_ring_size) + 1; |
| 3905 | |
| 3906 | buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size); |
| 3907 | rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32); |
| 3908 | rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff); |
| 3909 | } |
| 3910 | context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 0, &context_addr); |
| 3911 | |
| 3912 | val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32; |
| 3913 | rxbd->addr_hi = cpu_to_le32(val); |
| 3914 | |
| 3915 | context->ustorm_st_context.common.bd_page_base_hi = val; |
| 3916 | |
| 3917 | val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff; |
| 3918 | rxbd->addr_lo = cpu_to_le32(val); |
| 3919 | |
| 3920 | context->ustorm_st_context.common.bd_page_base_lo = val; |
| 3921 | |
| 3922 | context->ustorm_st_context.common.sb_index_numbers = |
| 3923 | BNX2X_ISCSI_RX_SB_INDEX_NUM; |
| 3924 | context->ustorm_st_context.common.clientId = cli; |
| 3925 | context->ustorm_st_context.common.status_block_id = BNX2X_DEF_SB_ID; |
| 3926 | context->ustorm_st_context.common.flags = |
| 3927 | USTORM_ETH_ST_CONTEXT_CONFIG_ENABLE_STATISTICS; |
| 3928 | context->ustorm_st_context.common.statistics_counter_id = cli; |
| 3929 | context->ustorm_st_context.common.mc_alignment_log_size = 0; |
| 3930 | context->ustorm_st_context.common.bd_buff_size = |
| 3931 | cp->l2_single_buf_size; |
| 3932 | |
| 3933 | context->ustorm_ag_context.cdu_usage = |
| 3934 | CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func), |
| 3935 | CDU_REGION_NUMBER_UCM_AG, |
| 3936 | ETH_CONNECTION_TYPE); |
| 3937 | |
| 3938 | rxcqe += BNX2X_MAX_RCQ_DESC_CNT; |
| 3939 | val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) >> 32; |
| 3940 | rxcqe->addr_hi = cpu_to_le32(val); |
| 3941 | |
| 3942 | CNIC_WR(dev, BAR_USTRORM_INTMEM + |
| 3943 | USTORM_CQE_PAGE_BASE_OFFSET(port, cli) + 4, val); |
| 3944 | |
| 3945 | CNIC_WR(dev, BAR_USTRORM_INTMEM + |
| 3946 | USTORM_CQE_PAGE_NEXT_OFFSET(port, cli) + 4, val); |
| 3947 | |
| 3948 | val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff; |
| 3949 | rxcqe->addr_lo = cpu_to_le32(val); |
| 3950 | |
| 3951 | CNIC_WR(dev, BAR_USTRORM_INTMEM + |
| 3952 | USTORM_CQE_PAGE_BASE_OFFSET(port, cli), val); |
| 3953 | |
| 3954 | CNIC_WR(dev, BAR_USTRORM_INTMEM + |
| 3955 | USTORM_CQE_PAGE_NEXT_OFFSET(port, cli), val); |
| 3956 | |
| 3957 | /* client tstorm info */ |
| 3958 | tstorm_client.mtu = cp->l2_single_buf_size - 14; |
| 3959 | tstorm_client.config_flags = |
| 3960 | (TSTORM_ETH_CLIENT_CONFIG_E1HOV_REM_ENABLE | |
| 3961 | TSTORM_ETH_CLIENT_CONFIG_STATSITICS_ENABLE); |
| 3962 | tstorm_client.statistics_counter_id = cli; |
| 3963 | |
| 3964 | CNIC_WR(dev, BAR_TSTRORM_INTMEM + |
| 3965 | TSTORM_CLIENT_CONFIG_OFFSET(port, cli), |
| 3966 | ((u32 *)&tstorm_client)[0]); |
| 3967 | CNIC_WR(dev, BAR_TSTRORM_INTMEM + |
| 3968 | TSTORM_CLIENT_CONFIG_OFFSET(port, cli) + 4, |
| 3969 | ((u32 *)&tstorm_client)[1]); |
| 3970 | |
| 3971 | /* reset tstorm per client statistics */ |
| 3972 | val = BAR_TSTRORM_INTMEM + |
| 3973 | TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli); |
| 3974 | for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++) |
| 3975 | CNIC_WR(dev, val + i * 4, 0); |
| 3976 | |
| 3977 | /* reset ustorm per client statistics */ |
| 3978 | val = BAR_USTRORM_INTMEM + |
| 3979 | USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli); |
| 3980 | for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++) |
| 3981 | CNIC_WR(dev, val + i * 4, 0); |
| 3982 | |
| 3983 | cp->rx_cons_ptr = |
| 3984 | &cp->bnx2x_def_status_blk->u_def_status_block.index_values[ |
| 3985 | HC_INDEX_DEF_U_ETH_ISCSI_RX_CQ_CONS]; |
| 3986 | } |
| 3987 | |
| 3988 | static void cnic_get_bnx2x_iscsi_info(struct cnic_dev *dev) |
| 3989 | { |
| 3990 | struct cnic_local *cp = dev->cnic_priv; |
| 3991 | u32 base, addr, val; |
| 3992 | int port = CNIC_PORT(cp); |
| 3993 | |
| 3994 | dev->max_iscsi_conn = 0; |
| 3995 | base = CNIC_RD(dev, MISC_REG_SHARED_MEM_ADDR); |
| 3996 | if (base < 0xa0000 || base >= 0xc0000) |
| 3997 | return; |
| 3998 | |
| 3999 | val = BNX2X_SHMEM_ADDR(base, |
| 4000 | dev_info.port_hw_config[port].iscsi_mac_upper); |
| 4001 | |
| 4002 | dev->mac_addr[0] = (u8) (val >> 8); |
| 4003 | dev->mac_addr[1] = (u8) val; |
| 4004 | |
| 4005 | val = BNX2X_SHMEM_ADDR(base, |
| 4006 | dev_info.port_hw_config[port].iscsi_mac_lower); |
| 4007 | |
| 4008 | dev->mac_addr[2] = (u8) (val >> 24); |
| 4009 | dev->mac_addr[3] = (u8) (val >> 16); |
| 4010 | dev->mac_addr[4] = (u8) (val >> 8); |
| 4011 | dev->mac_addr[5] = (u8) val; |
| 4012 | |
| 4013 | addr = BNX2X_SHMEM_ADDR(base, validity_map[port]); |
| 4014 | val = CNIC_RD(dev, addr); |
| 4015 | |
| 4016 | if (!(val & SHR_MEM_VALIDITY_LIC_NO_KEY_IN_EFFECT)) { |
| 4017 | u16 val16; |
| 4018 | |
| 4019 | addr = BNX2X_SHMEM_ADDR(base, |
| 4020 | drv_lic_key[port].max_iscsi_init_conn); |
| 4021 | val16 = CNIC_RD16(dev, addr); |
| 4022 | |
| 4023 | if (val16) |
| 4024 | val16 ^= 0x1e1e; |
| 4025 | dev->max_iscsi_conn = val16; |
| 4026 | } |
| 4027 | if (BNX2X_CHIP_IS_E1H(cp->chip_id)) { |
| 4028 | int func = CNIC_FUNC(cp); |
| 4029 | |
| 4030 | addr = BNX2X_SHMEM_ADDR(base, |
| 4031 | mf_cfg.func_mf_config[func].e1hov_tag); |
| 4032 | val = CNIC_RD(dev, addr); |
| 4033 | val &= FUNC_MF_CFG_E1HOV_TAG_MASK; |
| 4034 | if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) { |
| 4035 | addr = BNX2X_SHMEM_ADDR(base, |
| 4036 | mf_cfg.func_mf_config[func].config); |
| 4037 | val = CNIC_RD(dev, addr); |
| 4038 | val &= FUNC_MF_CFG_PROTOCOL_MASK; |
| 4039 | if (val != FUNC_MF_CFG_PROTOCOL_ISCSI) |
| 4040 | dev->max_iscsi_conn = 0; |
| 4041 | } |
| 4042 | } |
| 4043 | } |
| 4044 | |
| 4045 | static int cnic_start_bnx2x_hw(struct cnic_dev *dev) |
| 4046 | { |
| 4047 | struct cnic_local *cp = dev->cnic_priv; |
| 4048 | int func = CNIC_FUNC(cp), ret, i; |
| 4049 | int port = CNIC_PORT(cp); |
| 4050 | u16 eq_idx; |
| 4051 | u8 sb_id = cp->status_blk_num; |
| 4052 | |
| 4053 | ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ, |
| 4054 | BNX2X_ISCSI_START_CID); |
| 4055 | |
| 4056 | if (ret) |
| 4057 | return -ENOMEM; |
| 4058 | |
| 4059 | cp->kcq_io_addr = BAR_CSTRORM_INTMEM + |
| 4060 | CSTORM_ISCSI_EQ_PROD_OFFSET(func, 0); |
| 4061 | cp->kcq_prod_idx = 0; |
| 4062 | |
| 4063 | cnic_get_bnx2x_iscsi_info(dev); |
| 4064 | |
| 4065 | /* Only 1 EQ */ |
| 4066 | CNIC_WR16(dev, cp->kcq_io_addr, MAX_KCQ_IDX); |
| 4067 | CNIC_WR(dev, BAR_CSTRORM_INTMEM + |
| 4068 | CSTORM_ISCSI_EQ_CONS_OFFSET(func, 0), 0); |
| 4069 | CNIC_WR(dev, BAR_CSTRORM_INTMEM + |
| 4070 | CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0), |
| 4071 | cp->kcq_info.pg_map_arr[1] & 0xffffffff); |
| 4072 | CNIC_WR(dev, BAR_CSTRORM_INTMEM + |
| 4073 | CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0) + 4, |
| 4074 | (u64) cp->kcq_info.pg_map_arr[1] >> 32); |
| 4075 | CNIC_WR(dev, BAR_CSTRORM_INTMEM + |
| 4076 | CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0), |
| 4077 | cp->kcq_info.pg_map_arr[0] & 0xffffffff); |
| 4078 | CNIC_WR(dev, BAR_CSTRORM_INTMEM + |
| 4079 | CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0) + 4, |
| 4080 | (u64) cp->kcq_info.pg_map_arr[0] >> 32); |
| 4081 | CNIC_WR8(dev, BAR_CSTRORM_INTMEM + |
| 4082 | CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(func, 0), 1); |
| 4083 | CNIC_WR16(dev, BAR_CSTRORM_INTMEM + |
| 4084 | CSTORM_ISCSI_EQ_SB_NUM_OFFSET(func, 0), cp->status_blk_num); |
| 4085 | CNIC_WR8(dev, BAR_CSTRORM_INTMEM + |
| 4086 | CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(func, 0), |
| 4087 | HC_INDEX_C_ISCSI_EQ_CONS); |
| 4088 | |
| 4089 | for (i = 0; i < cp->conn_buf_info.num_pages; i++) { |
| 4090 | CNIC_WR(dev, BAR_TSTRORM_INTMEM + |
| 4091 | TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i), |
| 4092 | cp->conn_buf_info.pgtbl[2 * i]); |
| 4093 | CNIC_WR(dev, BAR_TSTRORM_INTMEM + |
| 4094 | TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i) + 4, |
| 4095 | cp->conn_buf_info.pgtbl[(2 * i) + 1]); |
| 4096 | } |
| 4097 | |
| 4098 | CNIC_WR(dev, BAR_USTRORM_INTMEM + |
| 4099 | USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func), |
| 4100 | cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff); |
| 4101 | CNIC_WR(dev, BAR_USTRORM_INTMEM + |
| 4102 | USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func) + 4, |
| 4103 | (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32); |
| 4104 | |
| 4105 | cnic_setup_bnx2x_context(dev); |
| 4106 | |
| 4107 | eq_idx = CNIC_RD16(dev, BAR_CSTRORM_INTMEM + |
| 4108 | CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) + |
| 4109 | offsetof(struct cstorm_status_block_c, |
| 4110 | index_values[HC_INDEX_C_ISCSI_EQ_CONS])); |
| 4111 | if (eq_idx != 0) { |
| 4112 | printk(KERN_ERR PFX "%s: EQ cons index %x != 0\n", |
| 4113 | dev->netdev->name, eq_idx); |
| 4114 | return -EBUSY; |
| 4115 | } |
| 4116 | ret = cnic_init_bnx2x_irq(dev); |
| 4117 | if (ret) |
| 4118 | return ret; |
| 4119 | |
| 4120 | cnic_init_bnx2x_tx_ring(dev); |
| 4121 | cnic_init_bnx2x_rx_ring(dev); |
| 4122 | |
| 4123 | return 0; |
| 4124 | } |
| 4125 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 4126 | static void cnic_init_rings(struct cnic_dev *dev) |
| 4127 | { |
| 4128 | if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) { |
| 4129 | cnic_init_bnx2_tx_ring(dev); |
| 4130 | cnic_init_bnx2_rx_ring(dev); |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 4131 | } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { |
| 4132 | struct cnic_local *cp = dev->cnic_priv; |
| 4133 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 4134 | u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp)); |
| 4135 | union l5cm_specific_data l5_data; |
| 4136 | struct ustorm_eth_rx_producers rx_prods = {0}; |
| 4137 | void __iomem *doorbell; |
| 4138 | int i; |
| 4139 | |
| 4140 | rx_prods.bd_prod = 0; |
| 4141 | rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT; |
| 4142 | barrier(); |
| 4143 | |
| 4144 | doorbell = ethdev->io_base2 + BAR_USTRORM_INTMEM + |
| 4145 | USTORM_RX_PRODS_OFFSET(CNIC_PORT(cp), cli); |
| 4146 | |
| 4147 | for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++) |
| 4148 | writel(((u32 *) &rx_prods)[i], doorbell + i * 4); |
| 4149 | |
| 4150 | cnic_init_bnx2x_tx_ring(dev); |
| 4151 | cnic_init_bnx2x_rx_ring(dev); |
| 4152 | |
| 4153 | l5_data.phy_address.lo = cli; |
| 4154 | l5_data.phy_address.hi = 0; |
| 4155 | cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP, |
| 4156 | BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data); |
| 4157 | cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 1); |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 4158 | } |
| 4159 | } |
| 4160 | |
| 4161 | static void cnic_shutdown_rings(struct cnic_dev *dev) |
| 4162 | { |
| 4163 | if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) { |
| 4164 | cnic_shutdown_bnx2_rx_ring(dev); |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 4165 | } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { |
| 4166 | struct cnic_local *cp = dev->cnic_priv; |
| 4167 | u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp)); |
| 4168 | |
| 4169 | cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 0); |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 4170 | } |
| 4171 | } |
| 4172 | |
Michael Chan | a3059b1 | 2009-08-14 15:49:44 +0000 | [diff] [blame] | 4173 | static int cnic_register_netdev(struct cnic_dev *dev) |
| 4174 | { |
| 4175 | struct cnic_local *cp = dev->cnic_priv; |
| 4176 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 4177 | int err; |
| 4178 | |
| 4179 | if (!ethdev) |
| 4180 | return -ENODEV; |
| 4181 | |
| 4182 | if (ethdev->drv_state & CNIC_DRV_STATE_REGD) |
| 4183 | return 0; |
| 4184 | |
| 4185 | err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev); |
| 4186 | if (err) |
| 4187 | printk(KERN_ERR PFX "%s: register_cnic failed\n", |
| 4188 | dev->netdev->name); |
| 4189 | |
| 4190 | return err; |
| 4191 | } |
| 4192 | |
| 4193 | static void cnic_unregister_netdev(struct cnic_dev *dev) |
| 4194 | { |
| 4195 | struct cnic_local *cp = dev->cnic_priv; |
| 4196 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 4197 | |
| 4198 | if (!ethdev) |
| 4199 | return; |
| 4200 | |
| 4201 | ethdev->drv_unregister_cnic(dev->netdev); |
| 4202 | } |
| 4203 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4204 | static int cnic_start_hw(struct cnic_dev *dev) |
| 4205 | { |
| 4206 | struct cnic_local *cp = dev->cnic_priv; |
| 4207 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 4208 | int err; |
| 4209 | |
| 4210 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) |
| 4211 | return -EALREADY; |
| 4212 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4213 | dev->regview = ethdev->io_base; |
| 4214 | cp->chip_id = ethdev->chip_id; |
| 4215 | pci_dev_get(dev->pcidev); |
| 4216 | cp->func = PCI_FUNC(dev->pcidev->devfn); |
| 4217 | cp->status_blk = ethdev->irq_arr[0].status_blk; |
| 4218 | cp->status_blk_num = ethdev->irq_arr[0].status_blk_num; |
| 4219 | |
| 4220 | err = cp->alloc_resc(dev); |
| 4221 | if (err) { |
| 4222 | printk(KERN_ERR PFX "%s: allocate resource failure\n", |
| 4223 | dev->netdev->name); |
| 4224 | goto err1; |
| 4225 | } |
| 4226 | |
| 4227 | err = cp->start_hw(dev); |
| 4228 | if (err) |
| 4229 | goto err1; |
| 4230 | |
| 4231 | err = cnic_cm_open(dev); |
| 4232 | if (err) |
| 4233 | goto err1; |
| 4234 | |
| 4235 | set_bit(CNIC_F_CNIC_UP, &dev->flags); |
| 4236 | |
| 4237 | cp->enable_int(dev); |
| 4238 | |
| 4239 | return 0; |
| 4240 | |
| 4241 | err1: |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4242 | cp->free_resc(dev); |
| 4243 | pci_dev_put(dev->pcidev); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4244 | return err; |
| 4245 | } |
| 4246 | |
| 4247 | static void cnic_stop_bnx2_hw(struct cnic_dev *dev) |
| 4248 | { |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4249 | cnic_disable_bnx2_int_sync(dev); |
| 4250 | |
| 4251 | cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0); |
| 4252 | cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0); |
| 4253 | |
| 4254 | cnic_init_context(dev, KWQ_CID); |
| 4255 | cnic_init_context(dev, KCQ_CID); |
| 4256 | |
| 4257 | cnic_setup_5709_context(dev, 0); |
| 4258 | cnic_free_irq(dev); |
| 4259 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4260 | cnic_free_resc(dev); |
| 4261 | } |
| 4262 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 4263 | |
| 4264 | static void cnic_stop_bnx2x_hw(struct cnic_dev *dev) |
| 4265 | { |
| 4266 | struct cnic_local *cp = dev->cnic_priv; |
| 4267 | u8 sb_id = cp->status_blk_num; |
| 4268 | int port = CNIC_PORT(cp); |
| 4269 | |
| 4270 | cnic_free_irq(dev); |
| 4271 | CNIC_WR16(dev, BAR_CSTRORM_INTMEM + |
| 4272 | CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) + |
| 4273 | offsetof(struct cstorm_status_block_c, |
| 4274 | index_values[HC_INDEX_C_ISCSI_EQ_CONS]), |
| 4275 | 0); |
| 4276 | cnic_free_resc(dev); |
| 4277 | } |
| 4278 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4279 | static void cnic_stop_hw(struct cnic_dev *dev) |
| 4280 | { |
| 4281 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) { |
| 4282 | struct cnic_local *cp = dev->cnic_priv; |
| 4283 | |
| 4284 | clear_bit(CNIC_F_CNIC_UP, &dev->flags); |
| 4285 | rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL); |
| 4286 | synchronize_rcu(); |
| 4287 | cnic_cm_shutdown(dev); |
| 4288 | cp->stop_hw(dev); |
| 4289 | pci_dev_put(dev->pcidev); |
| 4290 | } |
| 4291 | } |
| 4292 | |
| 4293 | static void cnic_free_dev(struct cnic_dev *dev) |
| 4294 | { |
| 4295 | int i = 0; |
| 4296 | |
| 4297 | while ((atomic_read(&dev->ref_count) != 0) && i < 10) { |
| 4298 | msleep(100); |
| 4299 | i++; |
| 4300 | } |
| 4301 | if (atomic_read(&dev->ref_count) != 0) |
| 4302 | printk(KERN_ERR PFX "%s: Failed waiting for ref count to go" |
| 4303 | " to zero.\n", dev->netdev->name); |
| 4304 | |
| 4305 | printk(KERN_INFO PFX "Removed CNIC device: %s\n", dev->netdev->name); |
| 4306 | dev_put(dev->netdev); |
| 4307 | kfree(dev); |
| 4308 | } |
| 4309 | |
| 4310 | static struct cnic_dev *cnic_alloc_dev(struct net_device *dev, |
| 4311 | struct pci_dev *pdev) |
| 4312 | { |
| 4313 | struct cnic_dev *cdev; |
| 4314 | struct cnic_local *cp; |
| 4315 | int alloc_size; |
| 4316 | |
| 4317 | alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local); |
| 4318 | |
| 4319 | cdev = kzalloc(alloc_size , GFP_KERNEL); |
| 4320 | if (cdev == NULL) { |
| 4321 | printk(KERN_ERR PFX "%s: allocate dev struct failure\n", |
| 4322 | dev->name); |
| 4323 | return NULL; |
| 4324 | } |
| 4325 | |
| 4326 | cdev->netdev = dev; |
| 4327 | cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev); |
| 4328 | cdev->register_device = cnic_register_device; |
| 4329 | cdev->unregister_device = cnic_unregister_device; |
| 4330 | cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv; |
| 4331 | |
| 4332 | cp = cdev->cnic_priv; |
| 4333 | cp->dev = cdev; |
| 4334 | cp->uio_dev = -1; |
| 4335 | cp->l2_single_buf_size = 0x400; |
| 4336 | cp->l2_rx_ring_size = 3; |
| 4337 | |
| 4338 | spin_lock_init(&cp->cnic_ulp_lock); |
| 4339 | |
| 4340 | printk(KERN_INFO PFX "Added CNIC device: %s\n", dev->name); |
| 4341 | |
| 4342 | return cdev; |
| 4343 | } |
| 4344 | |
| 4345 | static struct cnic_dev *init_bnx2_cnic(struct net_device *dev) |
| 4346 | { |
| 4347 | struct pci_dev *pdev; |
| 4348 | struct cnic_dev *cdev; |
| 4349 | struct cnic_local *cp; |
| 4350 | struct cnic_eth_dev *ethdev = NULL; |
Michael Chan | e2ee361 | 2009-06-13 17:43:02 -0700 | [diff] [blame] | 4351 | struct cnic_eth_dev *(*probe)(struct net_device *) = NULL; |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4352 | |
Michael Chan | e2ee361 | 2009-06-13 17:43:02 -0700 | [diff] [blame] | 4353 | probe = symbol_get(bnx2_cnic_probe); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4354 | if (probe) { |
| 4355 | ethdev = (*probe)(dev); |
Michael Chan | 64c6460 | 2009-08-14 15:49:43 +0000 | [diff] [blame] | 4356 | symbol_put(bnx2_cnic_probe); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4357 | } |
| 4358 | if (!ethdev) |
| 4359 | return NULL; |
| 4360 | |
| 4361 | pdev = ethdev->pdev; |
| 4362 | if (!pdev) |
| 4363 | return NULL; |
| 4364 | |
| 4365 | dev_hold(dev); |
| 4366 | pci_dev_get(pdev); |
| 4367 | if (pdev->device == PCI_DEVICE_ID_NX2_5709 || |
| 4368 | pdev->device == PCI_DEVICE_ID_NX2_5709S) { |
| 4369 | u8 rev; |
| 4370 | |
| 4371 | pci_read_config_byte(pdev, PCI_REVISION_ID, &rev); |
| 4372 | if (rev < 0x10) { |
| 4373 | pci_dev_put(pdev); |
| 4374 | goto cnic_err; |
| 4375 | } |
| 4376 | } |
| 4377 | pci_dev_put(pdev); |
| 4378 | |
| 4379 | cdev = cnic_alloc_dev(dev, pdev); |
| 4380 | if (cdev == NULL) |
| 4381 | goto cnic_err; |
| 4382 | |
| 4383 | set_bit(CNIC_F_BNX2_CLASS, &cdev->flags); |
| 4384 | cdev->submit_kwqes = cnic_submit_bnx2_kwqes; |
| 4385 | |
| 4386 | cp = cdev->cnic_priv; |
| 4387 | cp->ethdev = ethdev; |
| 4388 | cdev->pcidev = pdev; |
| 4389 | |
| 4390 | cp->cnic_ops = &cnic_bnx2_ops; |
| 4391 | cp->start_hw = cnic_start_bnx2_hw; |
| 4392 | cp->stop_hw = cnic_stop_bnx2_hw; |
| 4393 | cp->setup_pgtbl = cnic_setup_page_tbl; |
| 4394 | cp->alloc_resc = cnic_alloc_bnx2_resc; |
| 4395 | cp->free_resc = cnic_free_resc; |
| 4396 | cp->start_cm = cnic_cm_init_bnx2_hw; |
| 4397 | cp->stop_cm = cnic_cm_stop_bnx2_hw; |
| 4398 | cp->enable_int = cnic_enable_bnx2_int; |
| 4399 | cp->disable_int_sync = cnic_disable_bnx2_int_sync; |
| 4400 | cp->close_conn = cnic_close_bnx2_conn; |
| 4401 | cp->next_idx = cnic_bnx2_next_idx; |
| 4402 | cp->hw_idx = cnic_bnx2_hw_idx; |
| 4403 | return cdev; |
| 4404 | |
| 4405 | cnic_err: |
| 4406 | dev_put(dev); |
| 4407 | return NULL; |
| 4408 | } |
| 4409 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 4410 | static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev) |
| 4411 | { |
| 4412 | struct pci_dev *pdev; |
| 4413 | struct cnic_dev *cdev; |
| 4414 | struct cnic_local *cp; |
| 4415 | struct cnic_eth_dev *ethdev = NULL; |
| 4416 | struct cnic_eth_dev *(*probe)(struct net_device *) = NULL; |
| 4417 | |
| 4418 | probe = symbol_get(bnx2x_cnic_probe); |
| 4419 | if (probe) { |
| 4420 | ethdev = (*probe)(dev); |
| 4421 | symbol_put(bnx2x_cnic_probe); |
| 4422 | } |
| 4423 | if (!ethdev) |
| 4424 | return NULL; |
| 4425 | |
| 4426 | pdev = ethdev->pdev; |
| 4427 | if (!pdev) |
| 4428 | return NULL; |
| 4429 | |
| 4430 | dev_hold(dev); |
| 4431 | cdev = cnic_alloc_dev(dev, pdev); |
| 4432 | if (cdev == NULL) { |
| 4433 | dev_put(dev); |
| 4434 | return NULL; |
| 4435 | } |
| 4436 | |
| 4437 | set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags); |
| 4438 | cdev->submit_kwqes = cnic_submit_bnx2x_kwqes; |
| 4439 | |
| 4440 | cp = cdev->cnic_priv; |
| 4441 | cp->ethdev = ethdev; |
| 4442 | cdev->pcidev = pdev; |
| 4443 | |
| 4444 | cp->cnic_ops = &cnic_bnx2x_ops; |
| 4445 | cp->start_hw = cnic_start_bnx2x_hw; |
| 4446 | cp->stop_hw = cnic_stop_bnx2x_hw; |
| 4447 | cp->setup_pgtbl = cnic_setup_page_tbl_le; |
| 4448 | cp->alloc_resc = cnic_alloc_bnx2x_resc; |
| 4449 | cp->free_resc = cnic_free_resc; |
| 4450 | cp->start_cm = cnic_cm_init_bnx2x_hw; |
| 4451 | cp->stop_cm = cnic_cm_stop_bnx2x_hw; |
| 4452 | cp->enable_int = cnic_enable_bnx2x_int; |
| 4453 | cp->disable_int_sync = cnic_disable_bnx2x_int_sync; |
| 4454 | cp->ack_int = cnic_ack_bnx2x_msix; |
| 4455 | cp->close_conn = cnic_close_bnx2x_conn; |
| 4456 | cp->next_idx = cnic_bnx2x_next_idx; |
| 4457 | cp->hw_idx = cnic_bnx2x_hw_idx; |
| 4458 | return cdev; |
| 4459 | } |
| 4460 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4461 | static struct cnic_dev *is_cnic_dev(struct net_device *dev) |
| 4462 | { |
| 4463 | struct ethtool_drvinfo drvinfo; |
| 4464 | struct cnic_dev *cdev = NULL; |
| 4465 | |
| 4466 | if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) { |
| 4467 | memset(&drvinfo, 0, sizeof(drvinfo)); |
| 4468 | dev->ethtool_ops->get_drvinfo(dev, &drvinfo); |
| 4469 | |
| 4470 | if (!strcmp(drvinfo.driver, "bnx2")) |
| 4471 | cdev = init_bnx2_cnic(dev); |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame^] | 4472 | if (!strcmp(drvinfo.driver, "bnx2x")) |
| 4473 | cdev = init_bnx2x_cnic(dev); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4474 | if (cdev) { |
| 4475 | write_lock(&cnic_dev_lock); |
| 4476 | list_add(&cdev->list, &cnic_dev_list); |
| 4477 | write_unlock(&cnic_dev_lock); |
| 4478 | } |
| 4479 | } |
| 4480 | return cdev; |
| 4481 | } |
| 4482 | |
| 4483 | /** |
| 4484 | * netdev event handler |
| 4485 | */ |
| 4486 | static int cnic_netdev_event(struct notifier_block *this, unsigned long event, |
| 4487 | void *ptr) |
| 4488 | { |
| 4489 | struct net_device *netdev = ptr; |
| 4490 | struct cnic_dev *dev; |
| 4491 | int if_type; |
| 4492 | int new_dev = 0; |
| 4493 | |
| 4494 | dev = cnic_from_netdev(netdev); |
| 4495 | |
| 4496 | if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) { |
| 4497 | /* Check for the hot-plug device */ |
| 4498 | dev = is_cnic_dev(netdev); |
| 4499 | if (dev) { |
| 4500 | new_dev = 1; |
| 4501 | cnic_hold(dev); |
| 4502 | } |
| 4503 | } |
| 4504 | if (dev) { |
| 4505 | struct cnic_local *cp = dev->cnic_priv; |
| 4506 | |
| 4507 | if (new_dev) |
| 4508 | cnic_ulp_init(dev); |
| 4509 | else if (event == NETDEV_UNREGISTER) |
| 4510 | cnic_ulp_exit(dev); |
Michael Chan | 6053bbf | 2009-10-02 11:03:28 -0700 | [diff] [blame] | 4511 | |
| 4512 | if (event == NETDEV_UP) { |
Michael Chan | a3059b1 | 2009-08-14 15:49:44 +0000 | [diff] [blame] | 4513 | if (cnic_register_netdev(dev) != 0) { |
| 4514 | cnic_put(dev); |
| 4515 | goto done; |
| 4516 | } |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4517 | if (!cnic_start_hw(dev)) |
| 4518 | cnic_ulp_start(dev); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4519 | } |
| 4520 | |
| 4521 | rcu_read_lock(); |
| 4522 | for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { |
| 4523 | struct cnic_ulp_ops *ulp_ops; |
| 4524 | void *ctx; |
| 4525 | |
| 4526 | ulp_ops = rcu_dereference(cp->ulp_ops[if_type]); |
| 4527 | if (!ulp_ops || !ulp_ops->indicate_netevent) |
| 4528 | continue; |
| 4529 | |
| 4530 | ctx = cp->ulp_handle[if_type]; |
| 4531 | |
| 4532 | ulp_ops->indicate_netevent(ctx, event); |
| 4533 | } |
| 4534 | rcu_read_unlock(); |
| 4535 | |
| 4536 | if (event == NETDEV_GOING_DOWN) { |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4537 | cnic_ulp_stop(dev); |
| 4538 | cnic_stop_hw(dev); |
Michael Chan | a3059b1 | 2009-08-14 15:49:44 +0000 | [diff] [blame] | 4539 | cnic_unregister_netdev(dev); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4540 | } else if (event == NETDEV_UNREGISTER) { |
| 4541 | write_lock(&cnic_dev_lock); |
| 4542 | list_del_init(&dev->list); |
| 4543 | write_unlock(&cnic_dev_lock); |
| 4544 | |
| 4545 | cnic_put(dev); |
| 4546 | cnic_free_dev(dev); |
| 4547 | goto done; |
| 4548 | } |
| 4549 | cnic_put(dev); |
| 4550 | } |
| 4551 | done: |
| 4552 | return NOTIFY_DONE; |
| 4553 | } |
| 4554 | |
| 4555 | static struct notifier_block cnic_netdev_notifier = { |
| 4556 | .notifier_call = cnic_netdev_event |
| 4557 | }; |
| 4558 | |
| 4559 | static void cnic_release(void) |
| 4560 | { |
| 4561 | struct cnic_dev *dev; |
| 4562 | |
| 4563 | while (!list_empty(&cnic_dev_list)) { |
| 4564 | dev = list_entry(cnic_dev_list.next, struct cnic_dev, list); |
| 4565 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) { |
| 4566 | cnic_ulp_stop(dev); |
| 4567 | cnic_stop_hw(dev); |
| 4568 | } |
| 4569 | |
| 4570 | cnic_ulp_exit(dev); |
Michael Chan | a3059b1 | 2009-08-14 15:49:44 +0000 | [diff] [blame] | 4571 | cnic_unregister_netdev(dev); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4572 | list_del_init(&dev->list); |
| 4573 | cnic_free_dev(dev); |
| 4574 | } |
| 4575 | } |
| 4576 | |
| 4577 | static int __init cnic_init(void) |
| 4578 | { |
| 4579 | int rc = 0; |
| 4580 | |
| 4581 | printk(KERN_INFO "%s", version); |
| 4582 | |
| 4583 | rc = register_netdevice_notifier(&cnic_netdev_notifier); |
| 4584 | if (rc) { |
| 4585 | cnic_release(); |
| 4586 | return rc; |
| 4587 | } |
| 4588 | |
| 4589 | return 0; |
| 4590 | } |
| 4591 | |
| 4592 | static void __exit cnic_exit(void) |
| 4593 | { |
| 4594 | unregister_netdevice_notifier(&cnic_netdev_notifier); |
| 4595 | cnic_release(); |
| 4596 | return; |
| 4597 | } |
| 4598 | |
| 4599 | module_init(cnic_init); |
| 4600 | module_exit(cnic_exit); |