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> |
David S. Miller | c05e85a | 2009-10-12 23:18:35 -0700 | [diff] [blame] | 36 | #include <net/ip6_checksum.h> |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 37 | #include <scsi/iscsi_if.h> |
| 38 | |
| 39 | #include "cnic_if.h" |
| 40 | #include "bnx2.h" |
Michael Chan | e251306 | 2009-10-10 13:46:58 +0000 | [diff] [blame] | 41 | #include "bnx2x_reg.h" |
| 42 | #include "bnx2x_fw_defs.h" |
| 43 | #include "bnx2x_hsi.h" |
| 44 | #include "../scsi/bnx2i/57xx_iscsi_constants.h" |
| 45 | #include "../scsi/bnx2i/57xx_iscsi_hsi.h" |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 46 | #include "cnic.h" |
| 47 | #include "cnic_defs.h" |
| 48 | |
| 49 | #define DRV_MODULE_NAME "cnic" |
| 50 | #define PFX DRV_MODULE_NAME ": " |
| 51 | |
| 52 | static char version[] __devinitdata = |
| 53 | "Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n"; |
| 54 | |
| 55 | MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) " |
| 56 | "Chen (zongxi@broadcom.com"); |
| 57 | MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver"); |
| 58 | MODULE_LICENSE("GPL"); |
| 59 | MODULE_VERSION(CNIC_MODULE_VERSION); |
| 60 | |
| 61 | static LIST_HEAD(cnic_dev_list); |
| 62 | static DEFINE_RWLOCK(cnic_dev_lock); |
| 63 | static DEFINE_MUTEX(cnic_lock); |
| 64 | |
| 65 | static struct cnic_ulp_ops *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE]; |
| 66 | |
| 67 | static int cnic_service_bnx2(void *, void *); |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 68 | static int cnic_service_bnx2x(void *, void *); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 69 | static int cnic_ctl(void *, struct cnic_ctl_info *); |
| 70 | |
| 71 | static struct cnic_ops cnic_bnx2_ops = { |
| 72 | .cnic_owner = THIS_MODULE, |
| 73 | .cnic_handler = cnic_service_bnx2, |
| 74 | .cnic_ctl = cnic_ctl, |
| 75 | }; |
| 76 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 77 | static struct cnic_ops cnic_bnx2x_ops = { |
| 78 | .cnic_owner = THIS_MODULE, |
| 79 | .cnic_handler = cnic_service_bnx2x, |
| 80 | .cnic_ctl = cnic_ctl, |
| 81 | }; |
| 82 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 83 | static void cnic_shutdown_rings(struct cnic_dev *); |
| 84 | static void cnic_init_rings(struct cnic_dev *); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 85 | static int cnic_cm_set_pg(struct cnic_sock *); |
| 86 | |
| 87 | static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode) |
| 88 | { |
| 89 | struct cnic_dev *dev = uinfo->priv; |
| 90 | struct cnic_local *cp = dev->cnic_priv; |
| 91 | |
| 92 | if (!capable(CAP_NET_ADMIN)) |
| 93 | return -EPERM; |
| 94 | |
| 95 | if (cp->uio_dev != -1) |
| 96 | return -EBUSY; |
| 97 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 98 | rtnl_lock(); |
| 99 | if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) { |
| 100 | rtnl_unlock(); |
| 101 | return -ENODEV; |
| 102 | } |
| 103 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 104 | cp->uio_dev = iminor(inode); |
| 105 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 106 | cnic_init_rings(dev); |
| 107 | rtnl_unlock(); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 108 | |
| 109 | return 0; |
| 110 | } |
| 111 | |
| 112 | static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode) |
| 113 | { |
| 114 | struct cnic_dev *dev = uinfo->priv; |
| 115 | struct cnic_local *cp = dev->cnic_priv; |
| 116 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 117 | cnic_shutdown_rings(dev); |
Michael Chan | 6ef57a0 | 2009-09-21 15:39:37 +0000 | [diff] [blame] | 118 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 119 | cp->uio_dev = -1; |
| 120 | return 0; |
| 121 | } |
| 122 | |
| 123 | static inline void cnic_hold(struct cnic_dev *dev) |
| 124 | { |
| 125 | atomic_inc(&dev->ref_count); |
| 126 | } |
| 127 | |
| 128 | static inline void cnic_put(struct cnic_dev *dev) |
| 129 | { |
| 130 | atomic_dec(&dev->ref_count); |
| 131 | } |
| 132 | |
| 133 | static inline void csk_hold(struct cnic_sock *csk) |
| 134 | { |
| 135 | atomic_inc(&csk->ref_count); |
| 136 | } |
| 137 | |
| 138 | static inline void csk_put(struct cnic_sock *csk) |
| 139 | { |
| 140 | atomic_dec(&csk->ref_count); |
| 141 | } |
| 142 | |
| 143 | static struct cnic_dev *cnic_from_netdev(struct net_device *netdev) |
| 144 | { |
| 145 | struct cnic_dev *cdev; |
| 146 | |
| 147 | read_lock(&cnic_dev_lock); |
| 148 | list_for_each_entry(cdev, &cnic_dev_list, list) { |
| 149 | if (netdev == cdev->netdev) { |
| 150 | cnic_hold(cdev); |
| 151 | read_unlock(&cnic_dev_lock); |
| 152 | return cdev; |
| 153 | } |
| 154 | } |
| 155 | read_unlock(&cnic_dev_lock); |
| 156 | return NULL; |
| 157 | } |
| 158 | |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 159 | static inline void ulp_get(struct cnic_ulp_ops *ulp_ops) |
| 160 | { |
| 161 | atomic_inc(&ulp_ops->ref_count); |
| 162 | } |
| 163 | |
| 164 | static inline void ulp_put(struct cnic_ulp_ops *ulp_ops) |
| 165 | { |
| 166 | atomic_dec(&ulp_ops->ref_count); |
| 167 | } |
| 168 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 169 | static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val) |
| 170 | { |
| 171 | struct cnic_local *cp = dev->cnic_priv; |
| 172 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 173 | struct drv_ctl_info info; |
| 174 | struct drv_ctl_io *io = &info.data.io; |
| 175 | |
| 176 | info.cmd = DRV_CTL_CTX_WR_CMD; |
| 177 | io->cid_addr = cid_addr; |
| 178 | io->offset = off; |
| 179 | io->data = val; |
| 180 | ethdev->drv_ctl(dev->netdev, &info); |
| 181 | } |
| 182 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 183 | static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr) |
| 184 | { |
| 185 | struct cnic_local *cp = dev->cnic_priv; |
| 186 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 187 | struct drv_ctl_info info; |
| 188 | struct drv_ctl_io *io = &info.data.io; |
| 189 | |
| 190 | info.cmd = DRV_CTL_CTXTBL_WR_CMD; |
| 191 | io->offset = off; |
| 192 | io->dma_addr = addr; |
| 193 | ethdev->drv_ctl(dev->netdev, &info); |
| 194 | } |
| 195 | |
| 196 | static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start) |
| 197 | { |
| 198 | struct cnic_local *cp = dev->cnic_priv; |
| 199 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 200 | struct drv_ctl_info info; |
| 201 | struct drv_ctl_l2_ring *ring = &info.data.ring; |
| 202 | |
| 203 | if (start) |
| 204 | info.cmd = DRV_CTL_START_L2_CMD; |
| 205 | else |
| 206 | info.cmd = DRV_CTL_STOP_L2_CMD; |
| 207 | |
| 208 | ring->cid = cid; |
| 209 | ring->client_id = cl_id; |
| 210 | ethdev->drv_ctl(dev->netdev, &info); |
| 211 | } |
| 212 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 213 | static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val) |
| 214 | { |
| 215 | struct cnic_local *cp = dev->cnic_priv; |
| 216 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 217 | struct drv_ctl_info info; |
| 218 | struct drv_ctl_io *io = &info.data.io; |
| 219 | |
| 220 | info.cmd = DRV_CTL_IO_WR_CMD; |
| 221 | io->offset = off; |
| 222 | io->data = val; |
| 223 | ethdev->drv_ctl(dev->netdev, &info); |
| 224 | } |
| 225 | |
| 226 | static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off) |
| 227 | { |
| 228 | struct cnic_local *cp = dev->cnic_priv; |
| 229 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 230 | struct drv_ctl_info info; |
| 231 | struct drv_ctl_io *io = &info.data.io; |
| 232 | |
| 233 | info.cmd = DRV_CTL_IO_RD_CMD; |
| 234 | io->offset = off; |
| 235 | ethdev->drv_ctl(dev->netdev, &info); |
| 236 | return io->data; |
| 237 | } |
| 238 | |
| 239 | static int cnic_in_use(struct cnic_sock *csk) |
| 240 | { |
| 241 | return test_bit(SK_F_INUSE, &csk->flags); |
| 242 | } |
| 243 | |
| 244 | static void cnic_kwq_completion(struct cnic_dev *dev, u32 count) |
| 245 | { |
| 246 | struct cnic_local *cp = dev->cnic_priv; |
| 247 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 248 | struct drv_ctl_info info; |
| 249 | |
| 250 | info.cmd = DRV_CTL_COMPLETION_CMD; |
| 251 | info.data.comp.comp_count = count; |
| 252 | ethdev->drv_ctl(dev->netdev, &info); |
| 253 | } |
| 254 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 255 | static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid) |
| 256 | { |
| 257 | u32 i; |
| 258 | |
| 259 | for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) { |
| 260 | if (cp->ctx_tbl[i].cid == cid) { |
| 261 | *l5_cid = i; |
| 262 | return 0; |
| 263 | } |
| 264 | } |
| 265 | return -EINVAL; |
| 266 | } |
| 267 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 268 | static int cnic_send_nlmsg(struct cnic_local *cp, u32 type, |
| 269 | struct cnic_sock *csk) |
| 270 | { |
| 271 | struct iscsi_path path_req; |
| 272 | char *buf = NULL; |
| 273 | u16 len = 0; |
| 274 | u32 msg_type = ISCSI_KEVENT_IF_DOWN; |
| 275 | struct cnic_ulp_ops *ulp_ops; |
| 276 | |
| 277 | if (cp->uio_dev == -1) |
| 278 | return -ENODEV; |
| 279 | |
| 280 | if (csk) { |
| 281 | len = sizeof(path_req); |
| 282 | buf = (char *) &path_req; |
| 283 | memset(&path_req, 0, len); |
| 284 | |
| 285 | msg_type = ISCSI_KEVENT_PATH_REQ; |
| 286 | path_req.handle = (u64) csk->l5_cid; |
| 287 | if (test_bit(SK_F_IPV6, &csk->flags)) { |
| 288 | memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0], |
| 289 | sizeof(struct in6_addr)); |
| 290 | path_req.ip_addr_len = 16; |
| 291 | } else { |
| 292 | memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0], |
| 293 | sizeof(struct in_addr)); |
| 294 | path_req.ip_addr_len = 4; |
| 295 | } |
| 296 | path_req.vlan_id = csk->vlan_id; |
| 297 | path_req.pmtu = csk->mtu; |
| 298 | } |
| 299 | |
| 300 | rcu_read_lock(); |
Michael Chan | 6d7760a | 2009-07-27 11:25:58 -0700 | [diff] [blame] | 301 | ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 302 | if (ulp_ops) |
| 303 | ulp_ops->iscsi_nl_send_msg(cp->dev, msg_type, buf, len); |
| 304 | rcu_read_unlock(); |
| 305 | return 0; |
| 306 | } |
| 307 | |
| 308 | static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type, |
| 309 | char *buf, u16 len) |
| 310 | { |
| 311 | int rc = -EINVAL; |
| 312 | |
| 313 | switch (msg_type) { |
| 314 | case ISCSI_UEVENT_PATH_UPDATE: { |
| 315 | struct cnic_local *cp; |
| 316 | u32 l5_cid; |
| 317 | struct cnic_sock *csk; |
| 318 | struct iscsi_path *path_resp; |
| 319 | |
| 320 | if (len < sizeof(*path_resp)) |
| 321 | break; |
| 322 | |
| 323 | path_resp = (struct iscsi_path *) buf; |
| 324 | cp = dev->cnic_priv; |
| 325 | l5_cid = (u32) path_resp->handle; |
| 326 | if (l5_cid >= MAX_CM_SK_TBL_SZ) |
| 327 | break; |
| 328 | |
| 329 | csk = &cp->csk_tbl[l5_cid]; |
| 330 | csk_hold(csk); |
| 331 | if (cnic_in_use(csk)) { |
| 332 | memcpy(csk->ha, path_resp->mac_addr, 6); |
| 333 | if (test_bit(SK_F_IPV6, &csk->flags)) |
| 334 | memcpy(&csk->src_ip[0], &path_resp->src.v6_addr, |
| 335 | sizeof(struct in6_addr)); |
| 336 | else |
| 337 | memcpy(&csk->src_ip[0], &path_resp->src.v4_addr, |
| 338 | sizeof(struct in_addr)); |
| 339 | if (is_valid_ether_addr(csk->ha)) |
| 340 | cnic_cm_set_pg(csk); |
| 341 | } |
| 342 | csk_put(csk); |
| 343 | rc = 0; |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | return rc; |
| 348 | } |
| 349 | |
| 350 | static int cnic_offld_prep(struct cnic_sock *csk) |
| 351 | { |
| 352 | if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) |
| 353 | return 0; |
| 354 | |
| 355 | if (!test_bit(SK_F_CONNECT_START, &csk->flags)) { |
| 356 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); |
| 357 | return 0; |
| 358 | } |
| 359 | |
| 360 | return 1; |
| 361 | } |
| 362 | |
| 363 | static int cnic_close_prep(struct cnic_sock *csk) |
| 364 | { |
| 365 | clear_bit(SK_F_CONNECT_START, &csk->flags); |
| 366 | smp_mb__after_clear_bit(); |
| 367 | |
| 368 | if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) { |
| 369 | while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) |
| 370 | msleep(1); |
| 371 | |
| 372 | return 1; |
| 373 | } |
| 374 | return 0; |
| 375 | } |
| 376 | |
| 377 | static int cnic_abort_prep(struct cnic_sock *csk) |
| 378 | { |
| 379 | clear_bit(SK_F_CONNECT_START, &csk->flags); |
| 380 | smp_mb__after_clear_bit(); |
| 381 | |
| 382 | while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) |
| 383 | msleep(1); |
| 384 | |
| 385 | if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) { |
| 386 | csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP; |
| 387 | return 1; |
| 388 | } |
| 389 | |
| 390 | return 0; |
| 391 | } |
| 392 | |
Michael Chan | 6d7760a | 2009-07-27 11:25:58 -0700 | [diff] [blame] | 393 | static void cnic_uio_stop(void) |
| 394 | { |
| 395 | struct cnic_dev *dev; |
| 396 | |
| 397 | read_lock(&cnic_dev_lock); |
| 398 | list_for_each_entry(dev, &cnic_dev_list, list) { |
| 399 | struct cnic_local *cp = dev->cnic_priv; |
| 400 | |
| 401 | if (cp->cnic_uinfo) |
| 402 | cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL); |
| 403 | } |
| 404 | read_unlock(&cnic_dev_lock); |
| 405 | } |
| 406 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 407 | int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops) |
| 408 | { |
| 409 | struct cnic_dev *dev; |
| 410 | |
roel kluin | 0d37f36 | 2009-11-02 06:53:44 +0000 | [diff] [blame] | 411 | if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) { |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 412 | printk(KERN_ERR PFX "cnic_register_driver: Bad type %d\n", |
| 413 | ulp_type); |
| 414 | return -EINVAL; |
| 415 | } |
| 416 | mutex_lock(&cnic_lock); |
| 417 | if (cnic_ulp_tbl[ulp_type]) { |
| 418 | printk(KERN_ERR PFX "cnic_register_driver: Type %d has already " |
| 419 | "been registered\n", ulp_type); |
| 420 | mutex_unlock(&cnic_lock); |
| 421 | return -EBUSY; |
| 422 | } |
| 423 | |
| 424 | read_lock(&cnic_dev_lock); |
| 425 | list_for_each_entry(dev, &cnic_dev_list, list) { |
| 426 | struct cnic_local *cp = dev->cnic_priv; |
| 427 | |
| 428 | clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]); |
| 429 | } |
| 430 | read_unlock(&cnic_dev_lock); |
| 431 | |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 432 | atomic_set(&ulp_ops->ref_count, 0); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 433 | rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops); |
| 434 | mutex_unlock(&cnic_lock); |
| 435 | |
| 436 | /* Prevent race conditions with netdev_event */ |
| 437 | rtnl_lock(); |
| 438 | read_lock(&cnic_dev_lock); |
| 439 | list_for_each_entry(dev, &cnic_dev_list, list) { |
| 440 | struct cnic_local *cp = dev->cnic_priv; |
| 441 | |
| 442 | if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type])) |
| 443 | ulp_ops->cnic_init(dev); |
| 444 | } |
| 445 | read_unlock(&cnic_dev_lock); |
| 446 | rtnl_unlock(); |
| 447 | |
| 448 | return 0; |
| 449 | } |
| 450 | |
| 451 | int cnic_unregister_driver(int ulp_type) |
| 452 | { |
| 453 | struct cnic_dev *dev; |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 454 | struct cnic_ulp_ops *ulp_ops; |
| 455 | int i = 0; |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 456 | |
roel kluin | 0d37f36 | 2009-11-02 06:53:44 +0000 | [diff] [blame] | 457 | if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) { |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 458 | printk(KERN_ERR PFX "cnic_unregister_driver: Bad type %d\n", |
| 459 | ulp_type); |
| 460 | return -EINVAL; |
| 461 | } |
| 462 | mutex_lock(&cnic_lock); |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 463 | ulp_ops = cnic_ulp_tbl[ulp_type]; |
| 464 | if (!ulp_ops) { |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 465 | printk(KERN_ERR PFX "cnic_unregister_driver: Type %d has not " |
| 466 | "been registered\n", ulp_type); |
| 467 | goto out_unlock; |
| 468 | } |
| 469 | read_lock(&cnic_dev_lock); |
| 470 | list_for_each_entry(dev, &cnic_dev_list, list) { |
| 471 | struct cnic_local *cp = dev->cnic_priv; |
| 472 | |
| 473 | if (rcu_dereference(cp->ulp_ops[ulp_type])) { |
| 474 | printk(KERN_ERR PFX "cnic_unregister_driver: Type %d " |
| 475 | "still has devices registered\n", ulp_type); |
| 476 | read_unlock(&cnic_dev_lock); |
| 477 | goto out_unlock; |
| 478 | } |
| 479 | } |
| 480 | read_unlock(&cnic_dev_lock); |
| 481 | |
Michael Chan | 6d7760a | 2009-07-27 11:25:58 -0700 | [diff] [blame] | 482 | if (ulp_type == CNIC_ULP_ISCSI) |
| 483 | cnic_uio_stop(); |
| 484 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 485 | rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL); |
| 486 | |
| 487 | mutex_unlock(&cnic_lock); |
| 488 | synchronize_rcu(); |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 489 | while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) { |
| 490 | msleep(100); |
| 491 | i++; |
| 492 | } |
| 493 | |
| 494 | if (atomic_read(&ulp_ops->ref_count) != 0) |
| 495 | printk(KERN_WARNING PFX "%s: Failed waiting for ref count to go" |
| 496 | " to zero.\n", dev->netdev->name); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 497 | return 0; |
| 498 | |
| 499 | out_unlock: |
| 500 | mutex_unlock(&cnic_lock); |
| 501 | return -EINVAL; |
| 502 | } |
| 503 | |
| 504 | static int cnic_start_hw(struct cnic_dev *); |
| 505 | static void cnic_stop_hw(struct cnic_dev *); |
| 506 | |
| 507 | static int cnic_register_device(struct cnic_dev *dev, int ulp_type, |
| 508 | void *ulp_ctx) |
| 509 | { |
| 510 | struct cnic_local *cp = dev->cnic_priv; |
| 511 | struct cnic_ulp_ops *ulp_ops; |
| 512 | |
roel kluin | 0d37f36 | 2009-11-02 06:53:44 +0000 | [diff] [blame] | 513 | if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) { |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 514 | printk(KERN_ERR PFX "cnic_register_device: Bad type %d\n", |
| 515 | ulp_type); |
| 516 | return -EINVAL; |
| 517 | } |
| 518 | mutex_lock(&cnic_lock); |
| 519 | if (cnic_ulp_tbl[ulp_type] == NULL) { |
| 520 | printk(KERN_ERR PFX "cnic_register_device: Driver with type %d " |
| 521 | "has not been registered\n", ulp_type); |
| 522 | mutex_unlock(&cnic_lock); |
| 523 | return -EAGAIN; |
| 524 | } |
| 525 | if (rcu_dereference(cp->ulp_ops[ulp_type])) { |
| 526 | printk(KERN_ERR PFX "cnic_register_device: Type %d has already " |
| 527 | "been registered to this device\n", ulp_type); |
| 528 | mutex_unlock(&cnic_lock); |
| 529 | return -EBUSY; |
| 530 | } |
| 531 | |
| 532 | clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]); |
| 533 | cp->ulp_handle[ulp_type] = ulp_ctx; |
| 534 | ulp_ops = cnic_ulp_tbl[ulp_type]; |
| 535 | rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops); |
| 536 | cnic_hold(dev); |
| 537 | |
| 538 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) |
| 539 | if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type])) |
| 540 | ulp_ops->cnic_start(cp->ulp_handle[ulp_type]); |
| 541 | |
| 542 | mutex_unlock(&cnic_lock); |
| 543 | |
| 544 | return 0; |
| 545 | |
| 546 | } |
| 547 | EXPORT_SYMBOL(cnic_register_driver); |
| 548 | |
| 549 | static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type) |
| 550 | { |
| 551 | struct cnic_local *cp = dev->cnic_priv; |
Michael Chan | 681dbd7 | 2009-08-14 15:49:46 +0000 | [diff] [blame] | 552 | int i = 0; |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 553 | |
roel kluin | 0d37f36 | 2009-11-02 06:53:44 +0000 | [diff] [blame] | 554 | if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) { |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 555 | printk(KERN_ERR PFX "cnic_unregister_device: Bad type %d\n", |
| 556 | ulp_type); |
| 557 | return -EINVAL; |
| 558 | } |
| 559 | mutex_lock(&cnic_lock); |
| 560 | if (rcu_dereference(cp->ulp_ops[ulp_type])) { |
| 561 | rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL); |
| 562 | cnic_put(dev); |
| 563 | } else { |
| 564 | printk(KERN_ERR PFX "cnic_unregister_device: device not " |
| 565 | "registered to this ulp type %d\n", ulp_type); |
| 566 | mutex_unlock(&cnic_lock); |
| 567 | return -EINVAL; |
| 568 | } |
| 569 | mutex_unlock(&cnic_lock); |
| 570 | |
| 571 | synchronize_rcu(); |
| 572 | |
Michael Chan | 681dbd7 | 2009-08-14 15:49:46 +0000 | [diff] [blame] | 573 | while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) && |
| 574 | i < 20) { |
| 575 | msleep(100); |
| 576 | i++; |
| 577 | } |
| 578 | if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type])) |
| 579 | printk(KERN_WARNING PFX "%s: Failed waiting for ULP up call" |
| 580 | " to complete.\n", dev->netdev->name); |
| 581 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 582 | return 0; |
| 583 | } |
| 584 | EXPORT_SYMBOL(cnic_unregister_driver); |
| 585 | |
| 586 | static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id) |
| 587 | { |
| 588 | id_tbl->start = start_id; |
| 589 | id_tbl->max = size; |
| 590 | id_tbl->next = 0; |
| 591 | spin_lock_init(&id_tbl->lock); |
| 592 | id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL); |
| 593 | if (!id_tbl->table) |
| 594 | return -ENOMEM; |
| 595 | |
| 596 | return 0; |
| 597 | } |
| 598 | |
| 599 | static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl) |
| 600 | { |
| 601 | kfree(id_tbl->table); |
| 602 | id_tbl->table = NULL; |
| 603 | } |
| 604 | |
| 605 | static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id) |
| 606 | { |
| 607 | int ret = -1; |
| 608 | |
| 609 | id -= id_tbl->start; |
| 610 | if (id >= id_tbl->max) |
| 611 | return ret; |
| 612 | |
| 613 | spin_lock(&id_tbl->lock); |
| 614 | if (!test_bit(id, id_tbl->table)) { |
| 615 | set_bit(id, id_tbl->table); |
| 616 | ret = 0; |
| 617 | } |
| 618 | spin_unlock(&id_tbl->lock); |
| 619 | return ret; |
| 620 | } |
| 621 | |
| 622 | /* Returns -1 if not successful */ |
| 623 | static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl) |
| 624 | { |
| 625 | u32 id; |
| 626 | |
| 627 | spin_lock(&id_tbl->lock); |
| 628 | id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next); |
| 629 | if (id >= id_tbl->max) { |
| 630 | id = -1; |
| 631 | if (id_tbl->next != 0) { |
| 632 | id = find_first_zero_bit(id_tbl->table, id_tbl->next); |
| 633 | if (id >= id_tbl->next) |
| 634 | id = -1; |
| 635 | } |
| 636 | } |
| 637 | |
| 638 | if (id < id_tbl->max) { |
| 639 | set_bit(id, id_tbl->table); |
| 640 | id_tbl->next = (id + 1) & (id_tbl->max - 1); |
| 641 | id += id_tbl->start; |
| 642 | } |
| 643 | |
| 644 | spin_unlock(&id_tbl->lock); |
| 645 | |
| 646 | return id; |
| 647 | } |
| 648 | |
| 649 | static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id) |
| 650 | { |
| 651 | if (id == -1) |
| 652 | return; |
| 653 | |
| 654 | id -= id_tbl->start; |
| 655 | if (id >= id_tbl->max) |
| 656 | return; |
| 657 | |
| 658 | clear_bit(id, id_tbl->table); |
| 659 | } |
| 660 | |
| 661 | static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma) |
| 662 | { |
| 663 | int i; |
| 664 | |
| 665 | if (!dma->pg_arr) |
| 666 | return; |
| 667 | |
| 668 | for (i = 0; i < dma->num_pages; i++) { |
| 669 | if (dma->pg_arr[i]) { |
| 670 | pci_free_consistent(dev->pcidev, BCM_PAGE_SIZE, |
| 671 | dma->pg_arr[i], dma->pg_map_arr[i]); |
| 672 | dma->pg_arr[i] = NULL; |
| 673 | } |
| 674 | } |
| 675 | if (dma->pgtbl) { |
| 676 | pci_free_consistent(dev->pcidev, dma->pgtbl_size, |
| 677 | dma->pgtbl, dma->pgtbl_map); |
| 678 | dma->pgtbl = NULL; |
| 679 | } |
| 680 | kfree(dma->pg_arr); |
| 681 | dma->pg_arr = NULL; |
| 682 | dma->num_pages = 0; |
| 683 | } |
| 684 | |
| 685 | static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma) |
| 686 | { |
| 687 | int i; |
| 688 | u32 *page_table = dma->pgtbl; |
| 689 | |
| 690 | for (i = 0; i < dma->num_pages; i++) { |
| 691 | /* Each entry needs to be in big endian format. */ |
| 692 | *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32); |
| 693 | page_table++; |
| 694 | *page_table = (u32) dma->pg_map_arr[i]; |
| 695 | page_table++; |
| 696 | } |
| 697 | } |
| 698 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 699 | static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma) |
| 700 | { |
| 701 | int i; |
| 702 | u32 *page_table = dma->pgtbl; |
| 703 | |
| 704 | for (i = 0; i < dma->num_pages; i++) { |
| 705 | /* Each entry needs to be in little endian format. */ |
| 706 | *page_table = dma->pg_map_arr[i] & 0xffffffff; |
| 707 | page_table++; |
| 708 | *page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32); |
| 709 | page_table++; |
| 710 | } |
| 711 | } |
| 712 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 713 | static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma, |
| 714 | int pages, int use_pg_tbl) |
| 715 | { |
| 716 | int i, size; |
| 717 | struct cnic_local *cp = dev->cnic_priv; |
| 718 | |
| 719 | size = pages * (sizeof(void *) + sizeof(dma_addr_t)); |
| 720 | dma->pg_arr = kzalloc(size, GFP_ATOMIC); |
| 721 | if (dma->pg_arr == NULL) |
| 722 | return -ENOMEM; |
| 723 | |
| 724 | dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages); |
| 725 | dma->num_pages = pages; |
| 726 | |
| 727 | for (i = 0; i < pages; i++) { |
| 728 | dma->pg_arr[i] = pci_alloc_consistent(dev->pcidev, |
| 729 | BCM_PAGE_SIZE, |
| 730 | &dma->pg_map_arr[i]); |
| 731 | if (dma->pg_arr[i] == NULL) |
| 732 | goto error; |
| 733 | } |
| 734 | if (!use_pg_tbl) |
| 735 | return 0; |
| 736 | |
| 737 | dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) & |
| 738 | ~(BCM_PAGE_SIZE - 1); |
| 739 | dma->pgtbl = pci_alloc_consistent(dev->pcidev, dma->pgtbl_size, |
| 740 | &dma->pgtbl_map); |
| 741 | if (dma->pgtbl == NULL) |
| 742 | goto error; |
| 743 | |
| 744 | cp->setup_pgtbl(dev, dma); |
| 745 | |
| 746 | return 0; |
| 747 | |
| 748 | error: |
| 749 | cnic_free_dma(dev, dma); |
| 750 | return -ENOMEM; |
| 751 | } |
| 752 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 753 | static void cnic_free_context(struct cnic_dev *dev) |
| 754 | { |
| 755 | struct cnic_local *cp = dev->cnic_priv; |
| 756 | int i; |
| 757 | |
| 758 | for (i = 0; i < cp->ctx_blks; i++) { |
| 759 | if (cp->ctx_arr[i].ctx) { |
| 760 | pci_free_consistent(dev->pcidev, cp->ctx_blk_size, |
| 761 | cp->ctx_arr[i].ctx, |
| 762 | cp->ctx_arr[i].mapping); |
| 763 | cp->ctx_arr[i].ctx = NULL; |
| 764 | } |
| 765 | } |
| 766 | } |
| 767 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 768 | static void cnic_free_resc(struct cnic_dev *dev) |
| 769 | { |
| 770 | struct cnic_local *cp = dev->cnic_priv; |
| 771 | int i = 0; |
| 772 | |
| 773 | if (cp->cnic_uinfo) { |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 774 | while (cp->uio_dev != -1 && i < 15) { |
| 775 | msleep(100); |
| 776 | i++; |
| 777 | } |
| 778 | uio_unregister_device(cp->cnic_uinfo); |
| 779 | kfree(cp->cnic_uinfo); |
| 780 | cp->cnic_uinfo = NULL; |
| 781 | } |
| 782 | |
| 783 | if (cp->l2_buf) { |
| 784 | pci_free_consistent(dev->pcidev, cp->l2_buf_size, |
| 785 | cp->l2_buf, cp->l2_buf_map); |
| 786 | cp->l2_buf = NULL; |
| 787 | } |
| 788 | |
| 789 | if (cp->l2_ring) { |
| 790 | pci_free_consistent(dev->pcidev, cp->l2_ring_size, |
| 791 | cp->l2_ring, cp->l2_ring_map); |
| 792 | cp->l2_ring = NULL; |
| 793 | } |
| 794 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 795 | cnic_free_context(dev); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 796 | kfree(cp->ctx_arr); |
| 797 | cp->ctx_arr = NULL; |
| 798 | cp->ctx_blks = 0; |
| 799 | |
| 800 | cnic_free_dma(dev, &cp->gbl_buf_info); |
| 801 | cnic_free_dma(dev, &cp->conn_buf_info); |
| 802 | cnic_free_dma(dev, &cp->kwq_info); |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 803 | cnic_free_dma(dev, &cp->kwq_16_data_info); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 804 | cnic_free_dma(dev, &cp->kcq_info); |
| 805 | kfree(cp->iscsi_tbl); |
| 806 | cp->iscsi_tbl = NULL; |
| 807 | kfree(cp->ctx_tbl); |
| 808 | cp->ctx_tbl = NULL; |
| 809 | |
| 810 | cnic_free_id_tbl(&cp->cid_tbl); |
| 811 | } |
| 812 | |
| 813 | static int cnic_alloc_context(struct cnic_dev *dev) |
| 814 | { |
| 815 | struct cnic_local *cp = dev->cnic_priv; |
| 816 | |
| 817 | if (CHIP_NUM(cp) == CHIP_NUM_5709) { |
| 818 | int i, k, arr_size; |
| 819 | |
| 820 | cp->ctx_blk_size = BCM_PAGE_SIZE; |
| 821 | cp->cids_per_blk = BCM_PAGE_SIZE / 128; |
| 822 | arr_size = BNX2_MAX_CID / cp->cids_per_blk * |
| 823 | sizeof(struct cnic_ctx); |
| 824 | cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL); |
| 825 | if (cp->ctx_arr == NULL) |
| 826 | return -ENOMEM; |
| 827 | |
| 828 | k = 0; |
| 829 | for (i = 0; i < 2; i++) { |
| 830 | u32 j, reg, off, lo, hi; |
| 831 | |
| 832 | if (i == 0) |
| 833 | off = BNX2_PG_CTX_MAP; |
| 834 | else |
| 835 | off = BNX2_ISCSI_CTX_MAP; |
| 836 | |
| 837 | reg = cnic_reg_rd_ind(dev, off); |
| 838 | lo = reg >> 16; |
| 839 | hi = reg & 0xffff; |
| 840 | for (j = lo; j < hi; j += cp->cids_per_blk, k++) |
| 841 | cp->ctx_arr[k].cid = j; |
| 842 | } |
| 843 | |
| 844 | cp->ctx_blks = k; |
| 845 | if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) { |
| 846 | cp->ctx_blks = 0; |
| 847 | return -ENOMEM; |
| 848 | } |
| 849 | |
| 850 | for (i = 0; i < cp->ctx_blks; i++) { |
| 851 | cp->ctx_arr[i].ctx = |
| 852 | pci_alloc_consistent(dev->pcidev, BCM_PAGE_SIZE, |
| 853 | &cp->ctx_arr[i].mapping); |
| 854 | if (cp->ctx_arr[i].ctx == NULL) |
| 855 | return -ENOMEM; |
| 856 | } |
| 857 | } |
| 858 | return 0; |
| 859 | } |
| 860 | |
Michael Chan | ec0248e | 2009-08-26 09:49:22 +0000 | [diff] [blame] | 861 | static int cnic_alloc_l2_rings(struct cnic_dev *dev, int pages) |
| 862 | { |
| 863 | struct cnic_local *cp = dev->cnic_priv; |
| 864 | |
| 865 | cp->l2_ring_size = pages * BCM_PAGE_SIZE; |
| 866 | cp->l2_ring = pci_alloc_consistent(dev->pcidev, cp->l2_ring_size, |
| 867 | &cp->l2_ring_map); |
| 868 | if (!cp->l2_ring) |
| 869 | return -ENOMEM; |
| 870 | |
| 871 | cp->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size; |
| 872 | cp->l2_buf_size = PAGE_ALIGN(cp->l2_buf_size); |
| 873 | cp->l2_buf = pci_alloc_consistent(dev->pcidev, cp->l2_buf_size, |
| 874 | &cp->l2_buf_map); |
| 875 | if (!cp->l2_buf) |
| 876 | return -ENOMEM; |
| 877 | |
| 878 | return 0; |
| 879 | } |
| 880 | |
Michael Chan | 5e9b2db | 2009-08-26 09:49:23 +0000 | [diff] [blame] | 881 | static int cnic_alloc_uio(struct cnic_dev *dev) { |
| 882 | struct cnic_local *cp = dev->cnic_priv; |
| 883 | struct uio_info *uinfo; |
| 884 | int ret; |
| 885 | |
| 886 | uinfo = kzalloc(sizeof(*uinfo), GFP_ATOMIC); |
| 887 | if (!uinfo) |
| 888 | return -ENOMEM; |
| 889 | |
| 890 | uinfo->mem[0].addr = dev->netdev->base_addr; |
| 891 | uinfo->mem[0].internal_addr = dev->regview; |
| 892 | uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start; |
| 893 | uinfo->mem[0].memtype = UIO_MEM_PHYS; |
| 894 | |
Michael Chan | 5e9b2db | 2009-08-26 09:49:23 +0000 | [diff] [blame] | 895 | if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) { |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 896 | uinfo->mem[1].addr = (unsigned long) cp->status_blk & PAGE_MASK; |
Michael Chan | 5e9b2db | 2009-08-26 09:49:23 +0000 | [diff] [blame] | 897 | if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) |
| 898 | uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9; |
| 899 | else |
| 900 | uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE; |
| 901 | |
| 902 | uinfo->name = "bnx2_cnic"; |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 903 | } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { |
| 904 | uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk & |
| 905 | PAGE_MASK; |
| 906 | uinfo->mem[1].size = sizeof(struct host_def_status_block); |
| 907 | |
| 908 | uinfo->name = "bnx2x_cnic"; |
Michael Chan | 5e9b2db | 2009-08-26 09:49:23 +0000 | [diff] [blame] | 909 | } |
| 910 | |
| 911 | uinfo->mem[1].memtype = UIO_MEM_LOGICAL; |
| 912 | |
| 913 | uinfo->mem[2].addr = (unsigned long) cp->l2_ring; |
| 914 | uinfo->mem[2].size = cp->l2_ring_size; |
| 915 | uinfo->mem[2].memtype = UIO_MEM_LOGICAL; |
| 916 | |
| 917 | uinfo->mem[3].addr = (unsigned long) cp->l2_buf; |
| 918 | uinfo->mem[3].size = cp->l2_buf_size; |
| 919 | uinfo->mem[3].memtype = UIO_MEM_LOGICAL; |
| 920 | |
| 921 | uinfo->version = CNIC_MODULE_VERSION; |
| 922 | uinfo->irq = UIO_IRQ_CUSTOM; |
| 923 | |
| 924 | uinfo->open = cnic_uio_open; |
| 925 | uinfo->release = cnic_uio_close; |
| 926 | |
| 927 | uinfo->priv = dev; |
| 928 | |
| 929 | ret = uio_register_device(&dev->pcidev->dev, uinfo); |
| 930 | if (ret) { |
| 931 | kfree(uinfo); |
| 932 | return ret; |
| 933 | } |
| 934 | |
| 935 | cp->cnic_uinfo = uinfo; |
| 936 | return 0; |
| 937 | } |
| 938 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 939 | static int cnic_alloc_bnx2_resc(struct cnic_dev *dev) |
| 940 | { |
| 941 | struct cnic_local *cp = dev->cnic_priv; |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 942 | int ret; |
| 943 | |
| 944 | ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1); |
| 945 | if (ret) |
| 946 | goto error; |
| 947 | cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr; |
| 948 | |
| 949 | ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 1); |
| 950 | if (ret) |
| 951 | goto error; |
| 952 | cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr; |
| 953 | |
| 954 | ret = cnic_alloc_context(dev); |
| 955 | if (ret) |
| 956 | goto error; |
| 957 | |
Michael Chan | ec0248e | 2009-08-26 09:49:22 +0000 | [diff] [blame] | 958 | ret = cnic_alloc_l2_rings(dev, 2); |
| 959 | if (ret) |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 960 | goto error; |
| 961 | |
Michael Chan | 5e9b2db | 2009-08-26 09:49:23 +0000 | [diff] [blame] | 962 | ret = cnic_alloc_uio(dev); |
| 963 | if (ret) |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 964 | goto error; |
| 965 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 966 | return 0; |
| 967 | |
| 968 | error: |
| 969 | cnic_free_resc(dev); |
| 970 | return ret; |
| 971 | } |
| 972 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 973 | static int cnic_alloc_bnx2x_context(struct cnic_dev *dev) |
| 974 | { |
| 975 | struct cnic_local *cp = dev->cnic_priv; |
| 976 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 977 | int ctx_blk_size = cp->ethdev->ctx_blk_size; |
| 978 | int total_mem, blks, i, cid_space; |
| 979 | |
| 980 | if (BNX2X_ISCSI_START_CID < ethdev->starting_cid) |
| 981 | return -EINVAL; |
| 982 | |
| 983 | cid_space = MAX_ISCSI_TBL_SZ + |
| 984 | (BNX2X_ISCSI_START_CID - ethdev->starting_cid); |
| 985 | |
| 986 | total_mem = BNX2X_CONTEXT_MEM_SIZE * cid_space; |
| 987 | blks = total_mem / ctx_blk_size; |
| 988 | if (total_mem % ctx_blk_size) |
| 989 | blks++; |
| 990 | |
| 991 | if (blks > cp->ethdev->ctx_tbl_len) |
| 992 | return -ENOMEM; |
| 993 | |
| 994 | cp->ctx_arr = kzalloc(blks * sizeof(struct cnic_ctx), GFP_KERNEL); |
| 995 | if (cp->ctx_arr == NULL) |
| 996 | return -ENOMEM; |
| 997 | |
| 998 | cp->ctx_blks = blks; |
| 999 | cp->ctx_blk_size = ctx_blk_size; |
| 1000 | if (BNX2X_CHIP_IS_E1H(cp->chip_id)) |
| 1001 | cp->ctx_align = 0; |
| 1002 | else |
| 1003 | cp->ctx_align = ctx_blk_size; |
| 1004 | |
| 1005 | cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE; |
| 1006 | |
| 1007 | for (i = 0; i < blks; i++) { |
| 1008 | cp->ctx_arr[i].ctx = |
| 1009 | pci_alloc_consistent(dev->pcidev, cp->ctx_blk_size, |
| 1010 | &cp->ctx_arr[i].mapping); |
| 1011 | if (cp->ctx_arr[i].ctx == NULL) |
| 1012 | return -ENOMEM; |
| 1013 | |
| 1014 | if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) { |
| 1015 | if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) { |
| 1016 | cnic_free_context(dev); |
| 1017 | cp->ctx_blk_size += cp->ctx_align; |
| 1018 | i = -1; |
| 1019 | continue; |
| 1020 | } |
| 1021 | } |
| 1022 | } |
| 1023 | return 0; |
| 1024 | } |
| 1025 | |
| 1026 | static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev) |
| 1027 | { |
| 1028 | struct cnic_local *cp = dev->cnic_priv; |
| 1029 | int i, j, n, ret, pages; |
| 1030 | struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info; |
| 1031 | |
| 1032 | cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ, |
| 1033 | GFP_KERNEL); |
| 1034 | if (!cp->iscsi_tbl) |
| 1035 | goto error; |
| 1036 | |
| 1037 | cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) * |
| 1038 | MAX_CNIC_L5_CONTEXT, GFP_KERNEL); |
| 1039 | if (!cp->ctx_tbl) |
| 1040 | goto error; |
| 1041 | |
| 1042 | for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) { |
| 1043 | cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i]; |
| 1044 | cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI; |
| 1045 | } |
| 1046 | |
| 1047 | pages = PAGE_ALIGN(MAX_CNIC_L5_CONTEXT * CNIC_KWQ16_DATA_SIZE) / |
| 1048 | PAGE_SIZE; |
| 1049 | |
| 1050 | ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0); |
| 1051 | if (ret) |
| 1052 | return -ENOMEM; |
| 1053 | |
| 1054 | n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE; |
| 1055 | for (i = 0, j = 0; i < MAX_ISCSI_TBL_SZ; i++) { |
| 1056 | long off = CNIC_KWQ16_DATA_SIZE * (i % n); |
| 1057 | |
| 1058 | cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off; |
| 1059 | cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] + |
| 1060 | off; |
| 1061 | |
| 1062 | if ((i % n) == (n - 1)) |
| 1063 | j++; |
| 1064 | } |
| 1065 | |
| 1066 | ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 0); |
| 1067 | if (ret) |
| 1068 | goto error; |
| 1069 | cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr; |
| 1070 | |
| 1071 | for (i = 0; i < KCQ_PAGE_CNT; i++) { |
| 1072 | struct bnx2x_bd_chain_next *next = |
| 1073 | (struct bnx2x_bd_chain_next *) |
| 1074 | &cp->kcq[i][MAX_KCQE_CNT]; |
| 1075 | int j = i + 1; |
| 1076 | |
| 1077 | if (j >= KCQ_PAGE_CNT) |
| 1078 | j = 0; |
| 1079 | next->addr_hi = (u64) cp->kcq_info.pg_map_arr[j] >> 32; |
| 1080 | next->addr_lo = cp->kcq_info.pg_map_arr[j] & 0xffffffff; |
| 1081 | } |
| 1082 | |
| 1083 | pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS * |
| 1084 | BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE; |
| 1085 | ret = cnic_alloc_dma(dev, &cp->conn_buf_info, pages, 1); |
| 1086 | if (ret) |
| 1087 | goto error; |
| 1088 | |
| 1089 | pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE; |
| 1090 | ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0); |
| 1091 | if (ret) |
| 1092 | goto error; |
| 1093 | |
| 1094 | ret = cnic_alloc_bnx2x_context(dev); |
| 1095 | if (ret) |
| 1096 | goto error; |
| 1097 | |
| 1098 | cp->bnx2x_status_blk = cp->status_blk; |
| 1099 | cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk; |
| 1100 | |
| 1101 | cp->l2_rx_ring_size = 15; |
| 1102 | |
| 1103 | ret = cnic_alloc_l2_rings(dev, 4); |
| 1104 | if (ret) |
| 1105 | goto error; |
| 1106 | |
| 1107 | ret = cnic_alloc_uio(dev); |
| 1108 | if (ret) |
| 1109 | goto error; |
| 1110 | |
| 1111 | return 0; |
| 1112 | |
| 1113 | error: |
| 1114 | cnic_free_resc(dev); |
| 1115 | return -ENOMEM; |
| 1116 | } |
| 1117 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 1118 | static inline u32 cnic_kwq_avail(struct cnic_local *cp) |
| 1119 | { |
| 1120 | return cp->max_kwq_idx - |
| 1121 | ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx); |
| 1122 | } |
| 1123 | |
| 1124 | static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[], |
| 1125 | u32 num_wqes) |
| 1126 | { |
| 1127 | struct cnic_local *cp = dev->cnic_priv; |
| 1128 | struct kwqe *prod_qe; |
| 1129 | u16 prod, sw_prod, i; |
| 1130 | |
| 1131 | if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) |
| 1132 | return -EAGAIN; /* bnx2 is down */ |
| 1133 | |
| 1134 | spin_lock_bh(&cp->cnic_ulp_lock); |
| 1135 | if (num_wqes > cnic_kwq_avail(cp) && |
| 1136 | !(cp->cnic_local_flags & CNIC_LCL_FL_KWQ_INIT)) { |
| 1137 | spin_unlock_bh(&cp->cnic_ulp_lock); |
| 1138 | return -EAGAIN; |
| 1139 | } |
| 1140 | |
| 1141 | cp->cnic_local_flags &= ~CNIC_LCL_FL_KWQ_INIT; |
| 1142 | |
| 1143 | prod = cp->kwq_prod_idx; |
| 1144 | sw_prod = prod & MAX_KWQ_IDX; |
| 1145 | for (i = 0; i < num_wqes; i++) { |
| 1146 | prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)]; |
| 1147 | memcpy(prod_qe, wqes[i], sizeof(struct kwqe)); |
| 1148 | prod++; |
| 1149 | sw_prod = prod & MAX_KWQ_IDX; |
| 1150 | } |
| 1151 | cp->kwq_prod_idx = prod; |
| 1152 | |
| 1153 | CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx); |
| 1154 | |
| 1155 | spin_unlock_bh(&cp->cnic_ulp_lock); |
| 1156 | return 0; |
| 1157 | } |
| 1158 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 1159 | static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid, |
| 1160 | union l5cm_specific_data *l5_data) |
| 1161 | { |
| 1162 | struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; |
| 1163 | dma_addr_t map; |
| 1164 | |
| 1165 | map = ctx->kwqe_data_mapping; |
| 1166 | l5_data->phy_address.lo = (u64) map & 0xffffffff; |
| 1167 | l5_data->phy_address.hi = (u64) map >> 32; |
| 1168 | return ctx->kwqe_data; |
| 1169 | } |
| 1170 | |
| 1171 | static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid, |
| 1172 | u32 type, union l5cm_specific_data *l5_data) |
| 1173 | { |
| 1174 | struct cnic_local *cp = dev->cnic_priv; |
| 1175 | struct l5cm_spe kwqe; |
| 1176 | struct kwqe_16 *kwq[1]; |
| 1177 | int ret; |
| 1178 | |
| 1179 | kwqe.hdr.conn_and_cmd_data = |
| 1180 | cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) | |
| 1181 | BNX2X_HW_CID(cid, cp->func))); |
| 1182 | kwqe.hdr.type = cpu_to_le16(type); |
| 1183 | kwqe.hdr.reserved = 0; |
| 1184 | kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo); |
| 1185 | kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi); |
| 1186 | |
| 1187 | kwq[0] = (struct kwqe_16 *) &kwqe; |
| 1188 | |
| 1189 | spin_lock_bh(&cp->cnic_ulp_lock); |
| 1190 | ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1); |
| 1191 | spin_unlock_bh(&cp->cnic_ulp_lock); |
| 1192 | |
| 1193 | if (ret == 1) |
| 1194 | return 0; |
| 1195 | |
| 1196 | return -EBUSY; |
| 1197 | } |
| 1198 | |
| 1199 | static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type, |
| 1200 | struct kcqe *cqes[], u32 num_cqes) |
| 1201 | { |
| 1202 | struct cnic_local *cp = dev->cnic_priv; |
| 1203 | struct cnic_ulp_ops *ulp_ops; |
| 1204 | |
| 1205 | rcu_read_lock(); |
| 1206 | ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]); |
| 1207 | if (likely(ulp_ops)) { |
| 1208 | ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type], |
| 1209 | cqes, num_cqes); |
| 1210 | } |
| 1211 | rcu_read_unlock(); |
| 1212 | } |
| 1213 | |
| 1214 | static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe) |
| 1215 | { |
| 1216 | struct cnic_local *cp = dev->cnic_priv; |
| 1217 | struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe; |
| 1218 | int func = cp->func, pages; |
| 1219 | int hq_bds; |
| 1220 | |
| 1221 | cp->num_iscsi_tasks = req1->num_tasks_per_conn; |
| 1222 | cp->num_ccells = req1->num_ccells_per_conn; |
| 1223 | cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE * |
| 1224 | cp->num_iscsi_tasks; |
| 1225 | cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS * |
| 1226 | BNX2X_ISCSI_R2TQE_SIZE; |
| 1227 | cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE; |
| 1228 | pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE; |
| 1229 | hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE); |
| 1230 | cp->num_cqs = req1->num_cqs; |
| 1231 | |
| 1232 | if (!dev->max_iscsi_conn) |
| 1233 | return 0; |
| 1234 | |
| 1235 | /* init Tstorm RAM */ |
| 1236 | CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(func), |
| 1237 | req1->rq_num_wqes); |
| 1238 | CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(func), |
| 1239 | PAGE_SIZE); |
| 1240 | CNIC_WR8(dev, BAR_TSTRORM_INTMEM + |
| 1241 | TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT); |
| 1242 | CNIC_WR16(dev, BAR_TSTRORM_INTMEM + |
| 1243 | TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func), |
| 1244 | req1->num_tasks_per_conn); |
| 1245 | |
| 1246 | /* init Ustorm RAM */ |
| 1247 | CNIC_WR16(dev, BAR_USTRORM_INTMEM + |
| 1248 | USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(func), |
| 1249 | req1->rq_buffer_size); |
| 1250 | CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(func), |
| 1251 | PAGE_SIZE); |
| 1252 | CNIC_WR8(dev, BAR_USTRORM_INTMEM + |
| 1253 | USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT); |
| 1254 | CNIC_WR16(dev, BAR_USTRORM_INTMEM + |
| 1255 | USTORM_ISCSI_NUM_OF_TASKS_OFFSET(func), |
| 1256 | req1->num_tasks_per_conn); |
| 1257 | CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(func), |
| 1258 | req1->rq_num_wqes); |
| 1259 | CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(func), |
| 1260 | req1->cq_num_wqes); |
| 1261 | CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(func), |
| 1262 | cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS); |
| 1263 | |
| 1264 | /* init Xstorm RAM */ |
| 1265 | CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(func), |
| 1266 | PAGE_SIZE); |
| 1267 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 1268 | XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT); |
| 1269 | CNIC_WR16(dev, BAR_XSTRORM_INTMEM + |
| 1270 | XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func), |
| 1271 | req1->num_tasks_per_conn); |
| 1272 | CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(func), |
| 1273 | hq_bds); |
| 1274 | CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(func), |
| 1275 | req1->num_tasks_per_conn); |
| 1276 | CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(func), |
| 1277 | cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS); |
| 1278 | |
| 1279 | /* init Cstorm RAM */ |
| 1280 | CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(func), |
| 1281 | PAGE_SIZE); |
| 1282 | CNIC_WR8(dev, BAR_CSTRORM_INTMEM + |
| 1283 | CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT); |
| 1284 | CNIC_WR16(dev, BAR_CSTRORM_INTMEM + |
| 1285 | CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func), |
| 1286 | req1->num_tasks_per_conn); |
| 1287 | CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(func), |
| 1288 | req1->cq_num_wqes); |
| 1289 | CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(func), |
| 1290 | hq_bds); |
| 1291 | |
| 1292 | return 0; |
| 1293 | } |
| 1294 | |
| 1295 | static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe) |
| 1296 | { |
| 1297 | struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe; |
| 1298 | struct cnic_local *cp = dev->cnic_priv; |
| 1299 | int func = cp->func; |
| 1300 | struct iscsi_kcqe kcqe; |
| 1301 | struct kcqe *cqes[1]; |
| 1302 | |
| 1303 | memset(&kcqe, 0, sizeof(kcqe)); |
| 1304 | if (!dev->max_iscsi_conn) { |
| 1305 | kcqe.completion_status = |
| 1306 | ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED; |
| 1307 | goto done; |
| 1308 | } |
| 1309 | |
| 1310 | CNIC_WR(dev, BAR_TSTRORM_INTMEM + |
| 1311 | TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]); |
| 1312 | CNIC_WR(dev, BAR_TSTRORM_INTMEM + |
| 1313 | TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4, |
| 1314 | req2->error_bit_map[1]); |
| 1315 | |
| 1316 | CNIC_WR16(dev, BAR_USTRORM_INTMEM + |
| 1317 | USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn); |
| 1318 | CNIC_WR(dev, BAR_USTRORM_INTMEM + |
| 1319 | USTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]); |
| 1320 | CNIC_WR(dev, BAR_USTRORM_INTMEM + |
| 1321 | USTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4, |
| 1322 | req2->error_bit_map[1]); |
| 1323 | |
| 1324 | CNIC_WR16(dev, BAR_CSTRORM_INTMEM + |
| 1325 | CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn); |
| 1326 | |
| 1327 | kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS; |
| 1328 | |
| 1329 | done: |
| 1330 | kcqe.op_code = ISCSI_KCQE_OPCODE_INIT; |
| 1331 | cqes[0] = (struct kcqe *) &kcqe; |
| 1332 | cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1); |
| 1333 | |
| 1334 | return 0; |
| 1335 | } |
| 1336 | |
| 1337 | static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid) |
| 1338 | { |
| 1339 | struct cnic_local *cp = dev->cnic_priv; |
| 1340 | struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; |
| 1341 | |
| 1342 | if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) { |
| 1343 | struct cnic_iscsi *iscsi = ctx->proto.iscsi; |
| 1344 | |
| 1345 | cnic_free_dma(dev, &iscsi->hq_info); |
| 1346 | cnic_free_dma(dev, &iscsi->r2tq_info); |
| 1347 | cnic_free_dma(dev, &iscsi->task_array_info); |
| 1348 | } |
| 1349 | cnic_free_id(&cp->cid_tbl, ctx->cid); |
| 1350 | ctx->cid = 0; |
| 1351 | } |
| 1352 | |
| 1353 | static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid) |
| 1354 | { |
| 1355 | u32 cid; |
| 1356 | int ret, pages; |
| 1357 | struct cnic_local *cp = dev->cnic_priv; |
| 1358 | struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; |
| 1359 | struct cnic_iscsi *iscsi = ctx->proto.iscsi; |
| 1360 | |
| 1361 | cid = cnic_alloc_new_id(&cp->cid_tbl); |
| 1362 | if (cid == -1) { |
| 1363 | ret = -ENOMEM; |
| 1364 | goto error; |
| 1365 | } |
| 1366 | |
| 1367 | ctx->cid = cid; |
| 1368 | pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE; |
| 1369 | |
| 1370 | ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1); |
| 1371 | if (ret) |
| 1372 | goto error; |
| 1373 | |
| 1374 | pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE; |
| 1375 | ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1); |
| 1376 | if (ret) |
| 1377 | goto error; |
| 1378 | |
| 1379 | pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE; |
| 1380 | ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1); |
| 1381 | if (ret) |
| 1382 | goto error; |
| 1383 | |
| 1384 | return 0; |
| 1385 | |
| 1386 | error: |
| 1387 | cnic_free_bnx2x_conn_resc(dev, l5_cid); |
| 1388 | return ret; |
| 1389 | } |
| 1390 | |
| 1391 | static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init, |
| 1392 | struct regpair *ctx_addr) |
| 1393 | { |
| 1394 | struct cnic_local *cp = dev->cnic_priv; |
| 1395 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 1396 | int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk; |
| 1397 | int off = (cid - ethdev->starting_cid) % cp->cids_per_blk; |
| 1398 | unsigned long align_off = 0; |
| 1399 | dma_addr_t ctx_map; |
| 1400 | void *ctx; |
| 1401 | |
| 1402 | if (cp->ctx_align) { |
| 1403 | unsigned long mask = cp->ctx_align - 1; |
| 1404 | |
| 1405 | if (cp->ctx_arr[blk].mapping & mask) |
| 1406 | align_off = cp->ctx_align - |
| 1407 | (cp->ctx_arr[blk].mapping & mask); |
| 1408 | } |
| 1409 | ctx_map = cp->ctx_arr[blk].mapping + align_off + |
| 1410 | (off * BNX2X_CONTEXT_MEM_SIZE); |
| 1411 | ctx = cp->ctx_arr[blk].ctx + align_off + |
| 1412 | (off * BNX2X_CONTEXT_MEM_SIZE); |
| 1413 | if (init) |
| 1414 | memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE); |
| 1415 | |
| 1416 | ctx_addr->lo = ctx_map & 0xffffffff; |
| 1417 | ctx_addr->hi = (u64) ctx_map >> 32; |
| 1418 | return ctx; |
| 1419 | } |
| 1420 | |
| 1421 | static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[], |
| 1422 | u32 num) |
| 1423 | { |
| 1424 | struct cnic_local *cp = dev->cnic_priv; |
| 1425 | struct iscsi_kwqe_conn_offload1 *req1 = |
| 1426 | (struct iscsi_kwqe_conn_offload1 *) wqes[0]; |
| 1427 | struct iscsi_kwqe_conn_offload2 *req2 = |
| 1428 | (struct iscsi_kwqe_conn_offload2 *) wqes[1]; |
| 1429 | struct iscsi_kwqe_conn_offload3 *req3; |
| 1430 | struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id]; |
| 1431 | struct cnic_iscsi *iscsi = ctx->proto.iscsi; |
| 1432 | u32 cid = ctx->cid; |
| 1433 | u32 hw_cid = BNX2X_HW_CID(cid, cp->func); |
| 1434 | struct iscsi_context *ictx; |
| 1435 | struct regpair context_addr; |
| 1436 | int i, j, n = 2, n_max; |
| 1437 | |
| 1438 | ctx->ctx_flags = 0; |
| 1439 | if (!req2->num_additional_wqes) |
| 1440 | return -EINVAL; |
| 1441 | |
| 1442 | n_max = req2->num_additional_wqes + 2; |
| 1443 | |
| 1444 | ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr); |
| 1445 | if (ictx == NULL) |
| 1446 | return -ENOMEM; |
| 1447 | |
| 1448 | req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++]; |
| 1449 | |
| 1450 | ictx->xstorm_ag_context.hq_prod = 1; |
| 1451 | |
| 1452 | ictx->xstorm_st_context.iscsi.first_burst_length = |
| 1453 | ISCSI_DEF_FIRST_BURST_LEN; |
| 1454 | ictx->xstorm_st_context.iscsi.max_send_pdu_length = |
| 1455 | ISCSI_DEF_MAX_RECV_SEG_LEN; |
| 1456 | ictx->xstorm_st_context.iscsi.sq_pbl_base.lo = |
| 1457 | req1->sq_page_table_addr_lo; |
| 1458 | ictx->xstorm_st_context.iscsi.sq_pbl_base.hi = |
| 1459 | req1->sq_page_table_addr_hi; |
| 1460 | ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi; |
| 1461 | ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo; |
| 1462 | ictx->xstorm_st_context.iscsi.hq_pbl_base.lo = |
| 1463 | iscsi->hq_info.pgtbl_map & 0xffffffff; |
| 1464 | ictx->xstorm_st_context.iscsi.hq_pbl_base.hi = |
| 1465 | (u64) iscsi->hq_info.pgtbl_map >> 32; |
| 1466 | ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo = |
| 1467 | iscsi->hq_info.pgtbl[0]; |
| 1468 | ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi = |
| 1469 | iscsi->hq_info.pgtbl[1]; |
| 1470 | ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo = |
| 1471 | iscsi->r2tq_info.pgtbl_map & 0xffffffff; |
| 1472 | ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi = |
| 1473 | (u64) iscsi->r2tq_info.pgtbl_map >> 32; |
| 1474 | ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo = |
| 1475 | iscsi->r2tq_info.pgtbl[0]; |
| 1476 | ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi = |
| 1477 | iscsi->r2tq_info.pgtbl[1]; |
| 1478 | ictx->xstorm_st_context.iscsi.task_pbl_base.lo = |
| 1479 | iscsi->task_array_info.pgtbl_map & 0xffffffff; |
| 1480 | ictx->xstorm_st_context.iscsi.task_pbl_base.hi = |
| 1481 | (u64) iscsi->task_array_info.pgtbl_map >> 32; |
| 1482 | ictx->xstorm_st_context.iscsi.task_pbl_cache_idx = |
| 1483 | BNX2X_ISCSI_PBL_NOT_CACHED; |
| 1484 | ictx->xstorm_st_context.iscsi.flags.flags |= |
| 1485 | XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA; |
| 1486 | ictx->xstorm_st_context.iscsi.flags.flags |= |
| 1487 | XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T; |
| 1488 | |
| 1489 | ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE; |
| 1490 | /* TSTORM requires the base address of RQ DB & not PTE */ |
| 1491 | ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo = |
| 1492 | req2->rq_page_table_addr_lo & PAGE_MASK; |
| 1493 | ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi = |
| 1494 | req2->rq_page_table_addr_hi; |
| 1495 | ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id; |
| 1496 | ictx->tstorm_st_context.tcp.cwnd = 0x5A8; |
| 1497 | ictx->tstorm_st_context.tcp.flags2 |= |
| 1498 | TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN; |
| 1499 | |
| 1500 | ictx->timers_context.flags |= ISCSI_TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG; |
| 1501 | |
| 1502 | ictx->ustorm_st_context.ring.rq.pbl_base.lo = |
| 1503 | req2->rq_page_table_addr_lo & 0xffffffff; |
| 1504 | ictx->ustorm_st_context.ring.rq.pbl_base.hi = |
| 1505 | (u64) req2->rq_page_table_addr_hi >> 32; |
| 1506 | ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi; |
| 1507 | ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo; |
| 1508 | ictx->ustorm_st_context.ring.r2tq.pbl_base.lo = |
| 1509 | iscsi->r2tq_info.pgtbl_map & 0xffffffff; |
| 1510 | ictx->ustorm_st_context.ring.r2tq.pbl_base.hi = |
| 1511 | (u64) iscsi->r2tq_info.pgtbl_map >> 32; |
| 1512 | ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo = |
| 1513 | iscsi->r2tq_info.pgtbl[0]; |
| 1514 | ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi = |
| 1515 | iscsi->r2tq_info.pgtbl[1]; |
| 1516 | ictx->ustorm_st_context.ring.cq_pbl_base.lo = |
| 1517 | req1->cq_page_table_addr_lo; |
| 1518 | ictx->ustorm_st_context.ring.cq_pbl_base.hi = |
| 1519 | req1->cq_page_table_addr_hi; |
| 1520 | ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN; |
| 1521 | ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi; |
| 1522 | ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo; |
| 1523 | ictx->ustorm_st_context.task_pbe_cache_index = |
| 1524 | BNX2X_ISCSI_PBL_NOT_CACHED; |
| 1525 | ictx->ustorm_st_context.task_pdu_cache_index = |
| 1526 | BNX2X_ISCSI_PDU_HEADER_NOT_CACHED; |
| 1527 | |
| 1528 | for (i = 1, j = 1; i < cp->num_cqs; i++, j++) { |
| 1529 | if (j == 3) { |
| 1530 | if (n >= n_max) |
| 1531 | break; |
| 1532 | req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++]; |
| 1533 | j = 0; |
| 1534 | } |
| 1535 | ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN; |
| 1536 | ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo = |
| 1537 | req3->qp_first_pte[j].hi; |
| 1538 | ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi = |
| 1539 | req3->qp_first_pte[j].lo; |
| 1540 | } |
| 1541 | |
| 1542 | ictx->ustorm_st_context.task_pbl_base.lo = |
| 1543 | iscsi->task_array_info.pgtbl_map & 0xffffffff; |
| 1544 | ictx->ustorm_st_context.task_pbl_base.hi = |
| 1545 | (u64) iscsi->task_array_info.pgtbl_map >> 32; |
| 1546 | ictx->ustorm_st_context.tce_phy_addr.lo = |
| 1547 | iscsi->task_array_info.pgtbl[0]; |
| 1548 | ictx->ustorm_st_context.tce_phy_addr.hi = |
| 1549 | iscsi->task_array_info.pgtbl[1]; |
| 1550 | ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id; |
| 1551 | ictx->ustorm_st_context.num_cqs = cp->num_cqs; |
| 1552 | ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN; |
| 1553 | ictx->ustorm_st_context.negotiated_rx_and_flags |= |
| 1554 | ISCSI_DEF_MAX_BURST_LEN; |
| 1555 | ictx->ustorm_st_context.negotiated_rx |= |
| 1556 | ISCSI_DEFAULT_MAX_OUTSTANDING_R2T << |
| 1557 | USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT; |
| 1558 | |
| 1559 | ictx->cstorm_st_context.hq_pbl_base.lo = |
| 1560 | iscsi->hq_info.pgtbl_map & 0xffffffff; |
| 1561 | ictx->cstorm_st_context.hq_pbl_base.hi = |
| 1562 | (u64) iscsi->hq_info.pgtbl_map >> 32; |
| 1563 | ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0]; |
| 1564 | ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1]; |
| 1565 | ictx->cstorm_st_context.task_pbl_base.lo = |
| 1566 | iscsi->task_array_info.pgtbl_map & 0xffffffff; |
| 1567 | ictx->cstorm_st_context.task_pbl_base.hi = |
| 1568 | (u64) iscsi->task_array_info.pgtbl_map >> 32; |
| 1569 | /* CSTORM and USTORM initialization is different, CSTORM requires |
| 1570 | * CQ DB base & not PTE addr */ |
| 1571 | ictx->cstorm_st_context.cq_db_base.lo = |
| 1572 | req1->cq_page_table_addr_lo & PAGE_MASK; |
| 1573 | ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi; |
| 1574 | ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id; |
| 1575 | ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1; |
| 1576 | for (i = 0; i < cp->num_cqs; i++) { |
| 1577 | ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] = |
| 1578 | ISCSI_INITIAL_SN; |
| 1579 | ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] = |
| 1580 | ISCSI_INITIAL_SN; |
| 1581 | } |
| 1582 | |
| 1583 | ictx->xstorm_ag_context.cdu_reserved = |
| 1584 | CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG, |
| 1585 | ISCSI_CONNECTION_TYPE); |
| 1586 | ictx->ustorm_ag_context.cdu_usage = |
| 1587 | CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG, |
| 1588 | ISCSI_CONNECTION_TYPE); |
| 1589 | return 0; |
| 1590 | |
| 1591 | } |
| 1592 | |
| 1593 | static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[], |
| 1594 | u32 num, int *work) |
| 1595 | { |
| 1596 | struct iscsi_kwqe_conn_offload1 *req1; |
| 1597 | struct iscsi_kwqe_conn_offload2 *req2; |
| 1598 | struct cnic_local *cp = dev->cnic_priv; |
| 1599 | struct iscsi_kcqe kcqe; |
| 1600 | struct kcqe *cqes[1]; |
| 1601 | u32 l5_cid; |
| 1602 | int ret; |
| 1603 | |
| 1604 | if (num < 2) { |
| 1605 | *work = num; |
| 1606 | return -EINVAL; |
| 1607 | } |
| 1608 | |
| 1609 | req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0]; |
| 1610 | req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1]; |
| 1611 | if ((num - 2) < req2->num_additional_wqes) { |
| 1612 | *work = num; |
| 1613 | return -EINVAL; |
| 1614 | } |
| 1615 | *work = 2 + req2->num_additional_wqes;; |
| 1616 | |
| 1617 | l5_cid = req1->iscsi_conn_id; |
| 1618 | if (l5_cid >= MAX_ISCSI_TBL_SZ) |
| 1619 | return -EINVAL; |
| 1620 | |
| 1621 | memset(&kcqe, 0, sizeof(kcqe)); |
| 1622 | kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN; |
| 1623 | kcqe.iscsi_conn_id = l5_cid; |
| 1624 | kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE; |
| 1625 | |
| 1626 | if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) { |
| 1627 | atomic_dec(&cp->iscsi_conn); |
| 1628 | ret = 0; |
| 1629 | goto done; |
| 1630 | } |
| 1631 | ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid); |
| 1632 | if (ret) { |
| 1633 | atomic_dec(&cp->iscsi_conn); |
| 1634 | ret = 0; |
| 1635 | goto done; |
| 1636 | } |
| 1637 | ret = cnic_setup_bnx2x_ctx(dev, wqes, num); |
| 1638 | if (ret < 0) { |
| 1639 | cnic_free_bnx2x_conn_resc(dev, l5_cid); |
| 1640 | atomic_dec(&cp->iscsi_conn); |
| 1641 | goto done; |
| 1642 | } |
| 1643 | |
| 1644 | kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS; |
| 1645 | kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp->ctx_tbl[l5_cid].cid, |
| 1646 | cp->func); |
| 1647 | |
| 1648 | done: |
| 1649 | cqes[0] = (struct kcqe *) &kcqe; |
| 1650 | cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1); |
| 1651 | return ret; |
| 1652 | } |
| 1653 | |
| 1654 | |
| 1655 | static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe) |
| 1656 | { |
| 1657 | struct cnic_local *cp = dev->cnic_priv; |
| 1658 | struct iscsi_kwqe_conn_update *req = |
| 1659 | (struct iscsi_kwqe_conn_update *) kwqe; |
| 1660 | void *data; |
| 1661 | union l5cm_specific_data l5_data; |
| 1662 | u32 l5_cid, cid = BNX2X_SW_CID(req->context_id); |
| 1663 | int ret; |
| 1664 | |
| 1665 | if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0) |
| 1666 | return -EINVAL; |
| 1667 | |
| 1668 | data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data); |
| 1669 | if (!data) |
| 1670 | return -ENOMEM; |
| 1671 | |
| 1672 | memcpy(data, kwqe, sizeof(struct kwqe)); |
| 1673 | |
| 1674 | ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN, |
| 1675 | req->context_id, ISCSI_CONNECTION_TYPE, &l5_data); |
| 1676 | return ret; |
| 1677 | } |
| 1678 | |
| 1679 | static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe) |
| 1680 | { |
| 1681 | struct cnic_local *cp = dev->cnic_priv; |
| 1682 | struct iscsi_kwqe_conn_destroy *req = |
| 1683 | (struct iscsi_kwqe_conn_destroy *) kwqe; |
| 1684 | union l5cm_specific_data l5_data; |
| 1685 | u32 l5_cid = req->reserved0; |
| 1686 | struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; |
| 1687 | int ret = 0; |
| 1688 | struct iscsi_kcqe kcqe; |
| 1689 | struct kcqe *cqes[1]; |
| 1690 | |
| 1691 | if (!(ctx->ctx_flags & CTX_FL_OFFLD_START)) |
| 1692 | goto skip_cfc_delete; |
| 1693 | |
| 1694 | while (!time_after(jiffies, ctx->timestamp + (2 * HZ))) |
| 1695 | msleep(250); |
| 1696 | |
| 1697 | init_waitqueue_head(&ctx->waitq); |
| 1698 | ctx->wait_cond = 0; |
| 1699 | memset(&l5_data, 0, sizeof(l5_data)); |
| 1700 | ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CFC_DEL, |
| 1701 | req->context_id, |
| 1702 | ETH_CONNECTION_TYPE | |
| 1703 | (1 << SPE_HDR_COMMON_RAMROD_SHIFT), |
| 1704 | &l5_data); |
| 1705 | if (ret == 0) |
| 1706 | wait_event(ctx->waitq, ctx->wait_cond); |
| 1707 | |
| 1708 | skip_cfc_delete: |
| 1709 | cnic_free_bnx2x_conn_resc(dev, l5_cid); |
| 1710 | |
| 1711 | atomic_dec(&cp->iscsi_conn); |
| 1712 | |
| 1713 | memset(&kcqe, 0, sizeof(kcqe)); |
| 1714 | kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN; |
| 1715 | kcqe.iscsi_conn_id = l5_cid; |
| 1716 | kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS; |
| 1717 | kcqe.iscsi_conn_context_id = req->context_id; |
| 1718 | |
| 1719 | cqes[0] = (struct kcqe *) &kcqe; |
| 1720 | cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1); |
| 1721 | |
| 1722 | return ret; |
| 1723 | } |
| 1724 | |
| 1725 | static void cnic_init_storm_conn_bufs(struct cnic_dev *dev, |
| 1726 | struct l4_kwq_connect_req1 *kwqe1, |
| 1727 | struct l4_kwq_connect_req3 *kwqe3, |
| 1728 | struct l5cm_active_conn_buffer *conn_buf) |
| 1729 | { |
| 1730 | struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf; |
| 1731 | struct l5cm_xstorm_conn_buffer *xstorm_buf = |
| 1732 | &conn_buf->xstorm_conn_buffer; |
| 1733 | struct l5cm_tstorm_conn_buffer *tstorm_buf = |
| 1734 | &conn_buf->tstorm_conn_buffer; |
| 1735 | struct regpair context_addr; |
| 1736 | u32 cid = BNX2X_SW_CID(kwqe1->cid); |
| 1737 | struct in6_addr src_ip, dst_ip; |
| 1738 | int i; |
| 1739 | u32 *addrp; |
| 1740 | |
| 1741 | addrp = (u32 *) &conn_addr->local_ip_addr; |
| 1742 | for (i = 0; i < 4; i++, addrp++) |
| 1743 | src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp); |
| 1744 | |
| 1745 | addrp = (u32 *) &conn_addr->remote_ip_addr; |
| 1746 | for (i = 0; i < 4; i++, addrp++) |
| 1747 | dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp); |
| 1748 | |
| 1749 | cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr); |
| 1750 | |
| 1751 | xstorm_buf->context_addr.hi = context_addr.hi; |
| 1752 | xstorm_buf->context_addr.lo = context_addr.lo; |
| 1753 | xstorm_buf->mss = 0xffff; |
| 1754 | xstorm_buf->rcv_buf = kwqe3->rcv_buf; |
| 1755 | if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE) |
| 1756 | xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE; |
| 1757 | xstorm_buf->pseudo_header_checksum = |
| 1758 | swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0)); |
| 1759 | |
| 1760 | if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK)) |
| 1761 | tstorm_buf->params |= |
| 1762 | L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE; |
| 1763 | if (kwqe3->ka_timeout) { |
| 1764 | tstorm_buf->ka_enable = 1; |
| 1765 | tstorm_buf->ka_timeout = kwqe3->ka_timeout; |
| 1766 | tstorm_buf->ka_interval = kwqe3->ka_interval; |
| 1767 | tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count; |
| 1768 | } |
| 1769 | tstorm_buf->rcv_buf = kwqe3->rcv_buf; |
| 1770 | tstorm_buf->snd_buf = kwqe3->snd_buf; |
| 1771 | tstorm_buf->max_rt_time = 0xffffffff; |
| 1772 | } |
| 1773 | |
| 1774 | static void cnic_init_bnx2x_mac(struct cnic_dev *dev) |
| 1775 | { |
| 1776 | struct cnic_local *cp = dev->cnic_priv; |
| 1777 | int func = CNIC_FUNC(cp); |
| 1778 | u8 *mac = dev->mac_addr; |
| 1779 | |
| 1780 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 1781 | XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(func), mac[0]); |
| 1782 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 1783 | XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(func), mac[1]); |
| 1784 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 1785 | XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(func), mac[2]); |
| 1786 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 1787 | XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(func), mac[3]); |
| 1788 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 1789 | XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(func), mac[4]); |
| 1790 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 1791 | XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(func), mac[5]); |
| 1792 | |
| 1793 | CNIC_WR8(dev, BAR_TSTRORM_INTMEM + |
| 1794 | TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func), mac[5]); |
| 1795 | CNIC_WR8(dev, BAR_TSTRORM_INTMEM + |
| 1796 | TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func) + 1, |
| 1797 | mac[4]); |
| 1798 | CNIC_WR8(dev, BAR_TSTRORM_INTMEM + |
| 1799 | TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func), mac[3]); |
| 1800 | CNIC_WR8(dev, BAR_TSTRORM_INTMEM + |
| 1801 | TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 1, |
| 1802 | mac[2]); |
| 1803 | CNIC_WR8(dev, BAR_TSTRORM_INTMEM + |
| 1804 | TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 2, |
| 1805 | mac[1]); |
| 1806 | CNIC_WR8(dev, BAR_TSTRORM_INTMEM + |
| 1807 | TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 3, |
| 1808 | mac[0]); |
| 1809 | } |
| 1810 | |
| 1811 | static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts) |
| 1812 | { |
| 1813 | struct cnic_local *cp = dev->cnic_priv; |
| 1814 | u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN; |
| 1815 | u16 tstorm_flags = 0; |
| 1816 | |
| 1817 | if (tcp_ts) { |
| 1818 | xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED; |
| 1819 | tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED; |
| 1820 | } |
| 1821 | |
| 1822 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 1823 | XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), xstorm_flags); |
| 1824 | |
| 1825 | CNIC_WR16(dev, BAR_TSTRORM_INTMEM + |
| 1826 | TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), tstorm_flags); |
| 1827 | } |
| 1828 | |
| 1829 | static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[], |
| 1830 | u32 num, int *work) |
| 1831 | { |
| 1832 | struct cnic_local *cp = dev->cnic_priv; |
| 1833 | struct l4_kwq_connect_req1 *kwqe1 = |
| 1834 | (struct l4_kwq_connect_req1 *) wqes[0]; |
| 1835 | struct l4_kwq_connect_req3 *kwqe3; |
| 1836 | struct l5cm_active_conn_buffer *conn_buf; |
| 1837 | struct l5cm_conn_addr_params *conn_addr; |
| 1838 | union l5cm_specific_data l5_data; |
| 1839 | u32 l5_cid = kwqe1->pg_cid; |
| 1840 | struct cnic_sock *csk = &cp->csk_tbl[l5_cid]; |
| 1841 | struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; |
| 1842 | int ret; |
| 1843 | |
| 1844 | if (num < 2) { |
| 1845 | *work = num; |
| 1846 | return -EINVAL; |
| 1847 | } |
| 1848 | |
| 1849 | if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) |
| 1850 | *work = 3; |
| 1851 | else |
| 1852 | *work = 2; |
| 1853 | |
| 1854 | if (num < *work) { |
| 1855 | *work = num; |
| 1856 | return -EINVAL; |
| 1857 | } |
| 1858 | |
| 1859 | if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) { |
| 1860 | printk(KERN_ERR PFX "%s: conn_buf size too big\n", |
| 1861 | dev->netdev->name); |
| 1862 | return -ENOMEM; |
| 1863 | } |
| 1864 | conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data); |
| 1865 | if (!conn_buf) |
| 1866 | return -ENOMEM; |
| 1867 | |
| 1868 | memset(conn_buf, 0, sizeof(*conn_buf)); |
| 1869 | |
| 1870 | conn_addr = &conn_buf->conn_addr_buf; |
| 1871 | conn_addr->remote_addr_0 = csk->ha[0]; |
| 1872 | conn_addr->remote_addr_1 = csk->ha[1]; |
| 1873 | conn_addr->remote_addr_2 = csk->ha[2]; |
| 1874 | conn_addr->remote_addr_3 = csk->ha[3]; |
| 1875 | conn_addr->remote_addr_4 = csk->ha[4]; |
| 1876 | conn_addr->remote_addr_5 = csk->ha[5]; |
| 1877 | |
| 1878 | if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) { |
| 1879 | struct l4_kwq_connect_req2 *kwqe2 = |
| 1880 | (struct l4_kwq_connect_req2 *) wqes[1]; |
| 1881 | |
| 1882 | conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4; |
| 1883 | conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3; |
| 1884 | conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2; |
| 1885 | |
| 1886 | conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4; |
| 1887 | conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3; |
| 1888 | conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2; |
| 1889 | conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION; |
| 1890 | } |
| 1891 | kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1]; |
| 1892 | |
| 1893 | conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip; |
| 1894 | conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip; |
| 1895 | conn_addr->local_tcp_port = kwqe1->src_port; |
| 1896 | conn_addr->remote_tcp_port = kwqe1->dst_port; |
| 1897 | |
| 1898 | conn_addr->pmtu = kwqe3->pmtu; |
| 1899 | cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf); |
| 1900 | |
| 1901 | CNIC_WR16(dev, BAR_XSTRORM_INTMEM + |
| 1902 | XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->func), csk->vlan_id); |
| 1903 | |
| 1904 | cnic_bnx2x_set_tcp_timestamp(dev, |
| 1905 | kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP); |
| 1906 | |
| 1907 | ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT, |
| 1908 | kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data); |
| 1909 | if (!ret) |
| 1910 | ctx->ctx_flags |= CTX_FL_OFFLD_START; |
| 1911 | |
| 1912 | return ret; |
| 1913 | } |
| 1914 | |
| 1915 | static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe) |
| 1916 | { |
| 1917 | struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe; |
| 1918 | union l5cm_specific_data l5_data; |
| 1919 | int ret; |
| 1920 | |
| 1921 | memset(&l5_data, 0, sizeof(l5_data)); |
| 1922 | ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE, |
| 1923 | req->cid, ISCSI_CONNECTION_TYPE, &l5_data); |
| 1924 | return ret; |
| 1925 | } |
| 1926 | |
| 1927 | static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe) |
| 1928 | { |
| 1929 | struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe; |
| 1930 | union l5cm_specific_data l5_data; |
| 1931 | int ret; |
| 1932 | |
| 1933 | memset(&l5_data, 0, sizeof(l5_data)); |
| 1934 | ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT, |
| 1935 | req->cid, ISCSI_CONNECTION_TYPE, &l5_data); |
| 1936 | return ret; |
| 1937 | } |
| 1938 | static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe) |
| 1939 | { |
| 1940 | struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe; |
| 1941 | struct l4_kcq kcqe; |
| 1942 | struct kcqe *cqes[1]; |
| 1943 | |
| 1944 | memset(&kcqe, 0, sizeof(kcqe)); |
| 1945 | kcqe.pg_host_opaque = req->host_opaque; |
| 1946 | kcqe.pg_cid = req->host_opaque; |
| 1947 | kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG; |
| 1948 | cqes[0] = (struct kcqe *) &kcqe; |
| 1949 | cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1); |
| 1950 | return 0; |
| 1951 | } |
| 1952 | |
| 1953 | static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe) |
| 1954 | { |
| 1955 | struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe; |
| 1956 | struct l4_kcq kcqe; |
| 1957 | struct kcqe *cqes[1]; |
| 1958 | |
| 1959 | memset(&kcqe, 0, sizeof(kcqe)); |
| 1960 | kcqe.pg_host_opaque = req->pg_host_opaque; |
| 1961 | kcqe.pg_cid = req->pg_cid; |
| 1962 | kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG; |
| 1963 | cqes[0] = (struct kcqe *) &kcqe; |
| 1964 | cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1); |
| 1965 | return 0; |
| 1966 | } |
| 1967 | |
| 1968 | static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[], |
| 1969 | u32 num_wqes) |
| 1970 | { |
| 1971 | int i, work, ret; |
| 1972 | u32 opcode; |
| 1973 | struct kwqe *kwqe; |
| 1974 | |
| 1975 | if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) |
| 1976 | return -EAGAIN; /* bnx2 is down */ |
| 1977 | |
| 1978 | for (i = 0; i < num_wqes; ) { |
| 1979 | kwqe = wqes[i]; |
| 1980 | opcode = KWQE_OPCODE(kwqe->kwqe_op_flag); |
| 1981 | work = 1; |
| 1982 | |
| 1983 | switch (opcode) { |
| 1984 | case ISCSI_KWQE_OPCODE_INIT1: |
| 1985 | ret = cnic_bnx2x_iscsi_init1(dev, kwqe); |
| 1986 | break; |
| 1987 | case ISCSI_KWQE_OPCODE_INIT2: |
| 1988 | ret = cnic_bnx2x_iscsi_init2(dev, kwqe); |
| 1989 | break; |
| 1990 | case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1: |
| 1991 | ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i], |
| 1992 | num_wqes - i, &work); |
| 1993 | break; |
| 1994 | case ISCSI_KWQE_OPCODE_UPDATE_CONN: |
| 1995 | ret = cnic_bnx2x_iscsi_update(dev, kwqe); |
| 1996 | break; |
| 1997 | case ISCSI_KWQE_OPCODE_DESTROY_CONN: |
| 1998 | ret = cnic_bnx2x_iscsi_destroy(dev, kwqe); |
| 1999 | break; |
| 2000 | case L4_KWQE_OPCODE_VALUE_CONNECT1: |
| 2001 | ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i, |
| 2002 | &work); |
| 2003 | break; |
| 2004 | case L4_KWQE_OPCODE_VALUE_CLOSE: |
| 2005 | ret = cnic_bnx2x_close(dev, kwqe); |
| 2006 | break; |
| 2007 | case L4_KWQE_OPCODE_VALUE_RESET: |
| 2008 | ret = cnic_bnx2x_reset(dev, kwqe); |
| 2009 | break; |
| 2010 | case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG: |
| 2011 | ret = cnic_bnx2x_offload_pg(dev, kwqe); |
| 2012 | break; |
| 2013 | case L4_KWQE_OPCODE_VALUE_UPDATE_PG: |
| 2014 | ret = cnic_bnx2x_update_pg(dev, kwqe); |
| 2015 | break; |
| 2016 | case L4_KWQE_OPCODE_VALUE_UPLOAD_PG: |
| 2017 | ret = 0; |
| 2018 | break; |
| 2019 | default: |
| 2020 | ret = 0; |
| 2021 | printk(KERN_ERR PFX "%s: Unknown type of KWQE(0x%x)\n", |
| 2022 | dev->netdev->name, opcode); |
| 2023 | break; |
| 2024 | } |
| 2025 | if (ret < 0) |
| 2026 | printk(KERN_ERR PFX "%s: KWQE(0x%x) failed\n", |
| 2027 | dev->netdev->name, opcode); |
| 2028 | i += work; |
| 2029 | } |
| 2030 | return 0; |
| 2031 | } |
| 2032 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2033 | static void service_kcqes(struct cnic_dev *dev, int num_cqes) |
| 2034 | { |
| 2035 | struct cnic_local *cp = dev->cnic_priv; |
| 2036 | int i, j; |
| 2037 | |
| 2038 | i = 0; |
| 2039 | j = 1; |
| 2040 | while (num_cqes) { |
| 2041 | struct cnic_ulp_ops *ulp_ops; |
| 2042 | int ulp_type; |
| 2043 | u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag; |
| 2044 | u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK; |
| 2045 | |
| 2046 | if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION)) |
| 2047 | cnic_kwq_completion(dev, 1); |
| 2048 | |
| 2049 | while (j < num_cqes) { |
| 2050 | u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag; |
| 2051 | |
| 2052 | if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer) |
| 2053 | break; |
| 2054 | |
| 2055 | if (unlikely(next_op & KCQE_RAMROD_COMPLETION)) |
| 2056 | cnic_kwq_completion(dev, 1); |
| 2057 | j++; |
| 2058 | } |
| 2059 | |
| 2060 | if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA) |
| 2061 | ulp_type = CNIC_ULP_RDMA; |
| 2062 | else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI) |
| 2063 | ulp_type = CNIC_ULP_ISCSI; |
| 2064 | else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4) |
| 2065 | ulp_type = CNIC_ULP_L4; |
| 2066 | else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2) |
| 2067 | goto end; |
| 2068 | else { |
| 2069 | printk(KERN_ERR PFX "%s: Unknown type of KCQE(0x%x)\n", |
| 2070 | dev->netdev->name, kcqe_op_flag); |
| 2071 | goto end; |
| 2072 | } |
| 2073 | |
| 2074 | rcu_read_lock(); |
| 2075 | ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]); |
| 2076 | if (likely(ulp_ops)) { |
| 2077 | ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type], |
| 2078 | cp->completed_kcq + i, j); |
| 2079 | } |
| 2080 | rcu_read_unlock(); |
| 2081 | end: |
| 2082 | num_cqes -= j; |
| 2083 | i += j; |
| 2084 | j = 1; |
| 2085 | } |
| 2086 | return; |
| 2087 | } |
| 2088 | |
| 2089 | static u16 cnic_bnx2_next_idx(u16 idx) |
| 2090 | { |
| 2091 | return idx + 1; |
| 2092 | } |
| 2093 | |
| 2094 | static u16 cnic_bnx2_hw_idx(u16 idx) |
| 2095 | { |
| 2096 | return idx; |
| 2097 | } |
| 2098 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 2099 | static u16 cnic_bnx2x_next_idx(u16 idx) |
| 2100 | { |
| 2101 | idx++; |
| 2102 | if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT) |
| 2103 | idx++; |
| 2104 | |
| 2105 | return idx; |
| 2106 | } |
| 2107 | |
| 2108 | static u16 cnic_bnx2x_hw_idx(u16 idx) |
| 2109 | { |
| 2110 | if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT) |
| 2111 | idx++; |
| 2112 | return idx; |
| 2113 | } |
| 2114 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2115 | static int cnic_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod) |
| 2116 | { |
| 2117 | struct cnic_local *cp = dev->cnic_priv; |
| 2118 | u16 i, ri, last; |
| 2119 | struct kcqe *kcqe; |
| 2120 | int kcqe_cnt = 0, last_cnt = 0; |
| 2121 | |
| 2122 | i = ri = last = *sw_prod; |
| 2123 | ri &= MAX_KCQ_IDX; |
| 2124 | |
| 2125 | while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) { |
| 2126 | kcqe = &cp->kcq[KCQ_PG(ri)][KCQ_IDX(ri)]; |
| 2127 | cp->completed_kcq[kcqe_cnt++] = kcqe; |
| 2128 | i = cp->next_idx(i); |
| 2129 | ri = i & MAX_KCQ_IDX; |
| 2130 | if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) { |
| 2131 | last_cnt = kcqe_cnt; |
| 2132 | last = i; |
| 2133 | } |
| 2134 | } |
| 2135 | |
| 2136 | *sw_prod = last; |
| 2137 | return last_cnt; |
| 2138 | } |
| 2139 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 2140 | static void cnic_chk_pkt_rings(struct cnic_local *cp) |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2141 | { |
| 2142 | u16 rx_cons = *cp->rx_cons_ptr; |
| 2143 | u16 tx_cons = *cp->tx_cons_ptr; |
| 2144 | |
| 2145 | if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) { |
| 2146 | cp->tx_cons = tx_cons; |
| 2147 | cp->rx_cons = rx_cons; |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 2148 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2149 | uio_event_notify(cp->cnic_uinfo); |
| 2150 | } |
| 2151 | } |
| 2152 | |
| 2153 | static int cnic_service_bnx2(void *data, void *status_blk) |
| 2154 | { |
| 2155 | struct cnic_dev *dev = data; |
| 2156 | struct status_block *sblk = status_blk; |
| 2157 | struct cnic_local *cp = dev->cnic_priv; |
| 2158 | u32 status_idx = sblk->status_idx; |
| 2159 | u16 hw_prod, sw_prod; |
| 2160 | int kcqe_cnt; |
| 2161 | |
| 2162 | if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) |
| 2163 | return status_idx; |
| 2164 | |
| 2165 | cp->kwq_con_idx = *cp->kwq_con_idx_ptr; |
| 2166 | |
| 2167 | hw_prod = sblk->status_completion_producer_index; |
| 2168 | sw_prod = cp->kcq_prod_idx; |
| 2169 | while (sw_prod != hw_prod) { |
| 2170 | kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod); |
| 2171 | if (kcqe_cnt == 0) |
| 2172 | goto done; |
| 2173 | |
| 2174 | service_kcqes(dev, kcqe_cnt); |
| 2175 | |
| 2176 | /* Tell compiler that status_blk fields can change. */ |
| 2177 | barrier(); |
| 2178 | if (status_idx != sblk->status_idx) { |
| 2179 | status_idx = sblk->status_idx; |
| 2180 | cp->kwq_con_idx = *cp->kwq_con_idx_ptr; |
| 2181 | hw_prod = sblk->status_completion_producer_index; |
| 2182 | } else |
| 2183 | break; |
| 2184 | } |
| 2185 | |
| 2186 | done: |
| 2187 | CNIC_WR16(dev, cp->kcq_io_addr, sw_prod); |
| 2188 | |
| 2189 | cp->kcq_prod_idx = sw_prod; |
| 2190 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 2191 | cnic_chk_pkt_rings(cp); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2192 | return status_idx; |
| 2193 | } |
| 2194 | |
| 2195 | static void cnic_service_bnx2_msix(unsigned long data) |
| 2196 | { |
| 2197 | struct cnic_dev *dev = (struct cnic_dev *) data; |
| 2198 | struct cnic_local *cp = dev->cnic_priv; |
| 2199 | struct status_block_msix *status_blk = cp->bnx2_status_blk; |
| 2200 | u32 status_idx = status_blk->status_idx; |
| 2201 | u16 hw_prod, sw_prod; |
| 2202 | int kcqe_cnt; |
| 2203 | |
| 2204 | cp->kwq_con_idx = status_blk->status_cmd_consumer_index; |
| 2205 | |
| 2206 | hw_prod = status_blk->status_completion_producer_index; |
| 2207 | sw_prod = cp->kcq_prod_idx; |
| 2208 | while (sw_prod != hw_prod) { |
| 2209 | kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod); |
| 2210 | if (kcqe_cnt == 0) |
| 2211 | goto done; |
| 2212 | |
| 2213 | service_kcqes(dev, kcqe_cnt); |
| 2214 | |
| 2215 | /* Tell compiler that status_blk fields can change. */ |
| 2216 | barrier(); |
| 2217 | if (status_idx != status_blk->status_idx) { |
| 2218 | status_idx = status_blk->status_idx; |
| 2219 | cp->kwq_con_idx = status_blk->status_cmd_consumer_index; |
| 2220 | hw_prod = status_blk->status_completion_producer_index; |
| 2221 | } else |
| 2222 | break; |
| 2223 | } |
| 2224 | |
| 2225 | done: |
| 2226 | CNIC_WR16(dev, cp->kcq_io_addr, sw_prod); |
| 2227 | cp->kcq_prod_idx = sw_prod; |
| 2228 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 2229 | cnic_chk_pkt_rings(cp); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2230 | |
| 2231 | cp->last_status_idx = status_idx; |
| 2232 | CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | |
| 2233 | BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx); |
| 2234 | } |
| 2235 | |
| 2236 | static irqreturn_t cnic_irq(int irq, void *dev_instance) |
| 2237 | { |
| 2238 | struct cnic_dev *dev = dev_instance; |
| 2239 | struct cnic_local *cp = dev->cnic_priv; |
| 2240 | u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX; |
| 2241 | |
| 2242 | if (cp->ack_int) |
| 2243 | cp->ack_int(dev); |
| 2244 | |
| 2245 | prefetch(cp->status_blk); |
| 2246 | prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]); |
| 2247 | |
| 2248 | if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) |
| 2249 | tasklet_schedule(&cp->cnic_irq_task); |
| 2250 | |
| 2251 | return IRQ_HANDLED; |
| 2252 | } |
| 2253 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 2254 | static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm, |
| 2255 | u16 index, u8 op, u8 update) |
| 2256 | { |
| 2257 | struct cnic_local *cp = dev->cnic_priv; |
| 2258 | u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 + |
| 2259 | COMMAND_REG_INT_ACK); |
| 2260 | struct igu_ack_register igu_ack; |
| 2261 | |
| 2262 | igu_ack.status_block_index = index; |
| 2263 | igu_ack.sb_id_and_flags = |
| 2264 | ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) | |
| 2265 | (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) | |
| 2266 | (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) | |
| 2267 | (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT)); |
| 2268 | |
| 2269 | CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack)); |
| 2270 | } |
| 2271 | |
| 2272 | static void cnic_ack_bnx2x_msix(struct cnic_dev *dev) |
| 2273 | { |
| 2274 | struct cnic_local *cp = dev->cnic_priv; |
| 2275 | |
| 2276 | cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID, 0, |
| 2277 | IGU_INT_DISABLE, 0); |
| 2278 | } |
| 2279 | |
| 2280 | static void cnic_service_bnx2x_bh(unsigned long data) |
| 2281 | { |
| 2282 | struct cnic_dev *dev = (struct cnic_dev *) data; |
| 2283 | struct cnic_local *cp = dev->cnic_priv; |
| 2284 | u16 hw_prod, sw_prod; |
| 2285 | struct cstorm_status_block_c *sblk = |
| 2286 | &cp->bnx2x_status_blk->c_status_block; |
| 2287 | u32 status_idx = sblk->status_block_index; |
| 2288 | int kcqe_cnt; |
| 2289 | |
| 2290 | if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) |
| 2291 | return; |
| 2292 | |
| 2293 | hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS]; |
| 2294 | hw_prod = cp->hw_idx(hw_prod); |
| 2295 | sw_prod = cp->kcq_prod_idx; |
| 2296 | while (sw_prod != hw_prod) { |
| 2297 | kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod); |
| 2298 | if (kcqe_cnt == 0) |
| 2299 | goto done; |
| 2300 | |
| 2301 | service_kcqes(dev, kcqe_cnt); |
| 2302 | |
| 2303 | /* Tell compiler that sblk fields can change. */ |
| 2304 | barrier(); |
| 2305 | if (status_idx == sblk->status_block_index) |
| 2306 | break; |
| 2307 | |
| 2308 | status_idx = sblk->status_block_index; |
| 2309 | hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS]; |
| 2310 | hw_prod = cp->hw_idx(hw_prod); |
| 2311 | } |
| 2312 | |
| 2313 | done: |
| 2314 | CNIC_WR16(dev, cp->kcq_io_addr, sw_prod + MAX_KCQ_IDX); |
| 2315 | cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID, |
| 2316 | status_idx, IGU_INT_ENABLE, 1); |
| 2317 | |
| 2318 | cp->kcq_prod_idx = sw_prod; |
| 2319 | return; |
| 2320 | } |
| 2321 | |
| 2322 | static int cnic_service_bnx2x(void *data, void *status_blk) |
| 2323 | { |
| 2324 | struct cnic_dev *dev = data; |
| 2325 | struct cnic_local *cp = dev->cnic_priv; |
| 2326 | u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX; |
| 2327 | |
| 2328 | prefetch(cp->status_blk); |
| 2329 | prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]); |
| 2330 | |
| 2331 | if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) |
| 2332 | tasklet_schedule(&cp->cnic_irq_task); |
| 2333 | |
| 2334 | cnic_chk_pkt_rings(cp); |
| 2335 | |
| 2336 | return 0; |
| 2337 | } |
| 2338 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2339 | static void cnic_ulp_stop(struct cnic_dev *dev) |
| 2340 | { |
| 2341 | struct cnic_local *cp = dev->cnic_priv; |
| 2342 | int if_type; |
| 2343 | |
Michael Chan | 6d7760a | 2009-07-27 11:25:58 -0700 | [diff] [blame] | 2344 | if (cp->cnic_uinfo) |
| 2345 | cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL); |
| 2346 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2347 | for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { |
| 2348 | struct cnic_ulp_ops *ulp_ops; |
| 2349 | |
Michael Chan | 681dbd7 | 2009-08-14 15:49:46 +0000 | [diff] [blame] | 2350 | mutex_lock(&cnic_lock); |
| 2351 | ulp_ops = cp->ulp_ops[if_type]; |
| 2352 | if (!ulp_ops) { |
| 2353 | mutex_unlock(&cnic_lock); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2354 | continue; |
Michael Chan | 681dbd7 | 2009-08-14 15:49:46 +0000 | [diff] [blame] | 2355 | } |
| 2356 | set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]); |
| 2357 | mutex_unlock(&cnic_lock); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2358 | |
| 2359 | if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type])) |
| 2360 | ulp_ops->cnic_stop(cp->ulp_handle[if_type]); |
Michael Chan | 681dbd7 | 2009-08-14 15:49:46 +0000 | [diff] [blame] | 2361 | |
| 2362 | clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2363 | } |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2364 | } |
| 2365 | |
| 2366 | static void cnic_ulp_start(struct cnic_dev *dev) |
| 2367 | { |
| 2368 | struct cnic_local *cp = dev->cnic_priv; |
| 2369 | int if_type; |
| 2370 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2371 | for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { |
| 2372 | struct cnic_ulp_ops *ulp_ops; |
| 2373 | |
Michael Chan | 681dbd7 | 2009-08-14 15:49:46 +0000 | [diff] [blame] | 2374 | mutex_lock(&cnic_lock); |
| 2375 | ulp_ops = cp->ulp_ops[if_type]; |
| 2376 | if (!ulp_ops || !ulp_ops->cnic_start) { |
| 2377 | mutex_unlock(&cnic_lock); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2378 | continue; |
Michael Chan | 681dbd7 | 2009-08-14 15:49:46 +0000 | [diff] [blame] | 2379 | } |
| 2380 | set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]); |
| 2381 | mutex_unlock(&cnic_lock); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2382 | |
| 2383 | if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type])) |
| 2384 | ulp_ops->cnic_start(cp->ulp_handle[if_type]); |
Michael Chan | 681dbd7 | 2009-08-14 15:49:46 +0000 | [diff] [blame] | 2385 | |
| 2386 | clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2387 | } |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2388 | } |
| 2389 | |
| 2390 | static int cnic_ctl(void *data, struct cnic_ctl_info *info) |
| 2391 | { |
| 2392 | struct cnic_dev *dev = data; |
| 2393 | |
| 2394 | switch (info->cmd) { |
| 2395 | case CNIC_CTL_STOP_CMD: |
| 2396 | cnic_hold(dev); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2397 | |
| 2398 | cnic_ulp_stop(dev); |
| 2399 | cnic_stop_hw(dev); |
| 2400 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2401 | cnic_put(dev); |
| 2402 | break; |
| 2403 | case CNIC_CTL_START_CMD: |
| 2404 | cnic_hold(dev); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2405 | |
| 2406 | if (!cnic_start_hw(dev)) |
| 2407 | cnic_ulp_start(dev); |
| 2408 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2409 | cnic_put(dev); |
| 2410 | break; |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 2411 | case CNIC_CTL_COMPLETION_CMD: { |
| 2412 | u32 cid = BNX2X_SW_CID(info->data.comp.cid); |
| 2413 | u32 l5_cid; |
| 2414 | struct cnic_local *cp = dev->cnic_priv; |
| 2415 | |
| 2416 | if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) { |
| 2417 | struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; |
| 2418 | |
| 2419 | ctx->wait_cond = 1; |
| 2420 | wake_up(&ctx->waitq); |
| 2421 | } |
| 2422 | break; |
| 2423 | } |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2424 | default: |
| 2425 | return -EINVAL; |
| 2426 | } |
| 2427 | return 0; |
| 2428 | } |
| 2429 | |
| 2430 | static void cnic_ulp_init(struct cnic_dev *dev) |
| 2431 | { |
| 2432 | int i; |
| 2433 | struct cnic_local *cp = dev->cnic_priv; |
| 2434 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2435 | for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) { |
| 2436 | struct cnic_ulp_ops *ulp_ops; |
| 2437 | |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 2438 | mutex_lock(&cnic_lock); |
| 2439 | ulp_ops = cnic_ulp_tbl[i]; |
| 2440 | if (!ulp_ops || !ulp_ops->cnic_init) { |
| 2441 | mutex_unlock(&cnic_lock); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2442 | continue; |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 2443 | } |
| 2444 | ulp_get(ulp_ops); |
| 2445 | mutex_unlock(&cnic_lock); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2446 | |
| 2447 | if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i])) |
| 2448 | ulp_ops->cnic_init(dev); |
| 2449 | |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 2450 | ulp_put(ulp_ops); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2451 | } |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2452 | } |
| 2453 | |
| 2454 | static void cnic_ulp_exit(struct cnic_dev *dev) |
| 2455 | { |
| 2456 | int i; |
| 2457 | struct cnic_local *cp = dev->cnic_priv; |
| 2458 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2459 | for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) { |
| 2460 | struct cnic_ulp_ops *ulp_ops; |
| 2461 | |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 2462 | mutex_lock(&cnic_lock); |
| 2463 | ulp_ops = cnic_ulp_tbl[i]; |
| 2464 | if (!ulp_ops || !ulp_ops->cnic_exit) { |
| 2465 | mutex_unlock(&cnic_lock); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2466 | continue; |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 2467 | } |
| 2468 | ulp_get(ulp_ops); |
| 2469 | mutex_unlock(&cnic_lock); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2470 | |
| 2471 | if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i])) |
| 2472 | ulp_ops->cnic_exit(dev); |
| 2473 | |
Michael Chan | 7fc1ece | 2009-08-14 15:49:47 +0000 | [diff] [blame] | 2474 | ulp_put(ulp_ops); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2475 | } |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2476 | } |
| 2477 | |
| 2478 | static int cnic_cm_offload_pg(struct cnic_sock *csk) |
| 2479 | { |
| 2480 | struct cnic_dev *dev = csk->dev; |
| 2481 | struct l4_kwq_offload_pg *l4kwqe; |
| 2482 | struct kwqe *wqes[1]; |
| 2483 | |
| 2484 | l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1; |
| 2485 | memset(l4kwqe, 0, sizeof(*l4kwqe)); |
| 2486 | wqes[0] = (struct kwqe *) l4kwqe; |
| 2487 | |
| 2488 | l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG; |
| 2489 | l4kwqe->flags = |
| 2490 | L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT; |
| 2491 | l4kwqe->l2hdr_nbytes = ETH_HLEN; |
| 2492 | |
| 2493 | l4kwqe->da0 = csk->ha[0]; |
| 2494 | l4kwqe->da1 = csk->ha[1]; |
| 2495 | l4kwqe->da2 = csk->ha[2]; |
| 2496 | l4kwqe->da3 = csk->ha[3]; |
| 2497 | l4kwqe->da4 = csk->ha[4]; |
| 2498 | l4kwqe->da5 = csk->ha[5]; |
| 2499 | |
| 2500 | l4kwqe->sa0 = dev->mac_addr[0]; |
| 2501 | l4kwqe->sa1 = dev->mac_addr[1]; |
| 2502 | l4kwqe->sa2 = dev->mac_addr[2]; |
| 2503 | l4kwqe->sa3 = dev->mac_addr[3]; |
| 2504 | l4kwqe->sa4 = dev->mac_addr[4]; |
| 2505 | l4kwqe->sa5 = dev->mac_addr[5]; |
| 2506 | |
| 2507 | l4kwqe->etype = ETH_P_IP; |
| 2508 | l4kwqe->ipid_count = DEF_IPID_COUNT; |
| 2509 | l4kwqe->host_opaque = csk->l5_cid; |
| 2510 | |
| 2511 | if (csk->vlan_id) { |
| 2512 | l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING; |
| 2513 | l4kwqe->vlan_tag = csk->vlan_id; |
| 2514 | l4kwqe->l2hdr_nbytes += 4; |
| 2515 | } |
| 2516 | |
| 2517 | return dev->submit_kwqes(dev, wqes, 1); |
| 2518 | } |
| 2519 | |
| 2520 | static int cnic_cm_update_pg(struct cnic_sock *csk) |
| 2521 | { |
| 2522 | struct cnic_dev *dev = csk->dev; |
| 2523 | struct l4_kwq_update_pg *l4kwqe; |
| 2524 | struct kwqe *wqes[1]; |
| 2525 | |
| 2526 | l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1; |
| 2527 | memset(l4kwqe, 0, sizeof(*l4kwqe)); |
| 2528 | wqes[0] = (struct kwqe *) l4kwqe; |
| 2529 | |
| 2530 | l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG; |
| 2531 | l4kwqe->flags = |
| 2532 | L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT; |
| 2533 | l4kwqe->pg_cid = csk->pg_cid; |
| 2534 | |
| 2535 | l4kwqe->da0 = csk->ha[0]; |
| 2536 | l4kwqe->da1 = csk->ha[1]; |
| 2537 | l4kwqe->da2 = csk->ha[2]; |
| 2538 | l4kwqe->da3 = csk->ha[3]; |
| 2539 | l4kwqe->da4 = csk->ha[4]; |
| 2540 | l4kwqe->da5 = csk->ha[5]; |
| 2541 | |
| 2542 | l4kwqe->pg_host_opaque = csk->l5_cid; |
| 2543 | l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA; |
| 2544 | |
| 2545 | return dev->submit_kwqes(dev, wqes, 1); |
| 2546 | } |
| 2547 | |
| 2548 | static int cnic_cm_upload_pg(struct cnic_sock *csk) |
| 2549 | { |
| 2550 | struct cnic_dev *dev = csk->dev; |
| 2551 | struct l4_kwq_upload *l4kwqe; |
| 2552 | struct kwqe *wqes[1]; |
| 2553 | |
| 2554 | l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1; |
| 2555 | memset(l4kwqe, 0, sizeof(*l4kwqe)); |
| 2556 | wqes[0] = (struct kwqe *) l4kwqe; |
| 2557 | |
| 2558 | l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG; |
| 2559 | l4kwqe->flags = |
| 2560 | L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT; |
| 2561 | l4kwqe->cid = csk->pg_cid; |
| 2562 | |
| 2563 | return dev->submit_kwqes(dev, wqes, 1); |
| 2564 | } |
| 2565 | |
| 2566 | static int cnic_cm_conn_req(struct cnic_sock *csk) |
| 2567 | { |
| 2568 | struct cnic_dev *dev = csk->dev; |
| 2569 | struct l4_kwq_connect_req1 *l4kwqe1; |
| 2570 | struct l4_kwq_connect_req2 *l4kwqe2; |
| 2571 | struct l4_kwq_connect_req3 *l4kwqe3; |
| 2572 | struct kwqe *wqes[3]; |
| 2573 | u8 tcp_flags = 0; |
| 2574 | int num_wqes = 2; |
| 2575 | |
| 2576 | l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1; |
| 2577 | l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2; |
| 2578 | l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3; |
| 2579 | memset(l4kwqe1, 0, sizeof(*l4kwqe1)); |
| 2580 | memset(l4kwqe2, 0, sizeof(*l4kwqe2)); |
| 2581 | memset(l4kwqe3, 0, sizeof(*l4kwqe3)); |
| 2582 | |
| 2583 | l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3; |
| 2584 | l4kwqe3->flags = |
| 2585 | L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT; |
| 2586 | l4kwqe3->ka_timeout = csk->ka_timeout; |
| 2587 | l4kwqe3->ka_interval = csk->ka_interval; |
| 2588 | l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count; |
| 2589 | l4kwqe3->tos = csk->tos; |
| 2590 | l4kwqe3->ttl = csk->ttl; |
| 2591 | l4kwqe3->snd_seq_scale = csk->snd_seq_scale; |
| 2592 | l4kwqe3->pmtu = csk->mtu; |
| 2593 | l4kwqe3->rcv_buf = csk->rcv_buf; |
| 2594 | l4kwqe3->snd_buf = csk->snd_buf; |
| 2595 | l4kwqe3->seed = csk->seed; |
| 2596 | |
| 2597 | wqes[0] = (struct kwqe *) l4kwqe1; |
| 2598 | if (test_bit(SK_F_IPV6, &csk->flags)) { |
| 2599 | wqes[1] = (struct kwqe *) l4kwqe2; |
| 2600 | wqes[2] = (struct kwqe *) l4kwqe3; |
| 2601 | num_wqes = 3; |
| 2602 | |
| 2603 | l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6; |
| 2604 | l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2; |
| 2605 | l4kwqe2->flags = |
| 2606 | L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT | |
| 2607 | L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT; |
| 2608 | l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]); |
| 2609 | l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]); |
| 2610 | l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]); |
| 2611 | l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]); |
| 2612 | l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]); |
| 2613 | l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]); |
| 2614 | l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) - |
| 2615 | sizeof(struct tcphdr); |
| 2616 | } else { |
| 2617 | wqes[1] = (struct kwqe *) l4kwqe3; |
| 2618 | l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) - |
| 2619 | sizeof(struct tcphdr); |
| 2620 | } |
| 2621 | |
| 2622 | l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1; |
| 2623 | l4kwqe1->flags = |
| 2624 | (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) | |
| 2625 | L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT; |
| 2626 | l4kwqe1->cid = csk->cid; |
| 2627 | l4kwqe1->pg_cid = csk->pg_cid; |
| 2628 | l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]); |
| 2629 | l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]); |
| 2630 | l4kwqe1->src_port = be16_to_cpu(csk->src_port); |
| 2631 | l4kwqe1->dst_port = be16_to_cpu(csk->dst_port); |
| 2632 | if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK) |
| 2633 | tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK; |
| 2634 | if (csk->tcp_flags & SK_TCP_KEEP_ALIVE) |
| 2635 | tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE; |
| 2636 | if (csk->tcp_flags & SK_TCP_NAGLE) |
| 2637 | tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE; |
| 2638 | if (csk->tcp_flags & SK_TCP_TIMESTAMP) |
| 2639 | tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP; |
| 2640 | if (csk->tcp_flags & SK_TCP_SACK) |
| 2641 | tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK; |
| 2642 | if (csk->tcp_flags & SK_TCP_SEG_SCALING) |
| 2643 | tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING; |
| 2644 | |
| 2645 | l4kwqe1->tcp_flags = tcp_flags; |
| 2646 | |
| 2647 | return dev->submit_kwqes(dev, wqes, num_wqes); |
| 2648 | } |
| 2649 | |
| 2650 | static int cnic_cm_close_req(struct cnic_sock *csk) |
| 2651 | { |
| 2652 | struct cnic_dev *dev = csk->dev; |
| 2653 | struct l4_kwq_close_req *l4kwqe; |
| 2654 | struct kwqe *wqes[1]; |
| 2655 | |
| 2656 | l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2; |
| 2657 | memset(l4kwqe, 0, sizeof(*l4kwqe)); |
| 2658 | wqes[0] = (struct kwqe *) l4kwqe; |
| 2659 | |
| 2660 | l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE; |
| 2661 | l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT; |
| 2662 | l4kwqe->cid = csk->cid; |
| 2663 | |
| 2664 | return dev->submit_kwqes(dev, wqes, 1); |
| 2665 | } |
| 2666 | |
| 2667 | static int cnic_cm_abort_req(struct cnic_sock *csk) |
| 2668 | { |
| 2669 | struct cnic_dev *dev = csk->dev; |
| 2670 | struct l4_kwq_reset_req *l4kwqe; |
| 2671 | struct kwqe *wqes[1]; |
| 2672 | |
| 2673 | l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2; |
| 2674 | memset(l4kwqe, 0, sizeof(*l4kwqe)); |
| 2675 | wqes[0] = (struct kwqe *) l4kwqe; |
| 2676 | |
| 2677 | l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET; |
| 2678 | l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT; |
| 2679 | l4kwqe->cid = csk->cid; |
| 2680 | |
| 2681 | return dev->submit_kwqes(dev, wqes, 1); |
| 2682 | } |
| 2683 | |
| 2684 | static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid, |
| 2685 | u32 l5_cid, struct cnic_sock **csk, void *context) |
| 2686 | { |
| 2687 | struct cnic_local *cp = dev->cnic_priv; |
| 2688 | struct cnic_sock *csk1; |
| 2689 | |
| 2690 | if (l5_cid >= MAX_CM_SK_TBL_SZ) |
| 2691 | return -EINVAL; |
| 2692 | |
| 2693 | csk1 = &cp->csk_tbl[l5_cid]; |
| 2694 | if (atomic_read(&csk1->ref_count)) |
| 2695 | return -EAGAIN; |
| 2696 | |
| 2697 | if (test_and_set_bit(SK_F_INUSE, &csk1->flags)) |
| 2698 | return -EBUSY; |
| 2699 | |
| 2700 | csk1->dev = dev; |
| 2701 | csk1->cid = cid; |
| 2702 | csk1->l5_cid = l5_cid; |
| 2703 | csk1->ulp_type = ulp_type; |
| 2704 | csk1->context = context; |
| 2705 | |
| 2706 | csk1->ka_timeout = DEF_KA_TIMEOUT; |
| 2707 | csk1->ka_interval = DEF_KA_INTERVAL; |
| 2708 | csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT; |
| 2709 | csk1->tos = DEF_TOS; |
| 2710 | csk1->ttl = DEF_TTL; |
| 2711 | csk1->snd_seq_scale = DEF_SND_SEQ_SCALE; |
| 2712 | csk1->rcv_buf = DEF_RCV_BUF; |
| 2713 | csk1->snd_buf = DEF_SND_BUF; |
| 2714 | csk1->seed = DEF_SEED; |
| 2715 | |
| 2716 | *csk = csk1; |
| 2717 | return 0; |
| 2718 | } |
| 2719 | |
| 2720 | static void cnic_cm_cleanup(struct cnic_sock *csk) |
| 2721 | { |
| 2722 | if (csk->src_port) { |
| 2723 | struct cnic_dev *dev = csk->dev; |
| 2724 | struct cnic_local *cp = dev->cnic_priv; |
| 2725 | |
| 2726 | cnic_free_id(&cp->csk_port_tbl, csk->src_port); |
| 2727 | csk->src_port = 0; |
| 2728 | } |
| 2729 | } |
| 2730 | |
| 2731 | static void cnic_close_conn(struct cnic_sock *csk) |
| 2732 | { |
| 2733 | if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) { |
| 2734 | cnic_cm_upload_pg(csk); |
| 2735 | clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags); |
| 2736 | } |
| 2737 | cnic_cm_cleanup(csk); |
| 2738 | } |
| 2739 | |
| 2740 | static int cnic_cm_destroy(struct cnic_sock *csk) |
| 2741 | { |
| 2742 | if (!cnic_in_use(csk)) |
| 2743 | return -EINVAL; |
| 2744 | |
| 2745 | csk_hold(csk); |
| 2746 | clear_bit(SK_F_INUSE, &csk->flags); |
| 2747 | smp_mb__after_clear_bit(); |
| 2748 | while (atomic_read(&csk->ref_count) != 1) |
| 2749 | msleep(1); |
| 2750 | cnic_cm_cleanup(csk); |
| 2751 | |
| 2752 | csk->flags = 0; |
| 2753 | csk_put(csk); |
| 2754 | return 0; |
| 2755 | } |
| 2756 | |
| 2757 | static inline u16 cnic_get_vlan(struct net_device *dev, |
| 2758 | struct net_device **vlan_dev) |
| 2759 | { |
| 2760 | if (dev->priv_flags & IFF_802_1Q_VLAN) { |
| 2761 | *vlan_dev = vlan_dev_real_dev(dev); |
| 2762 | return vlan_dev_vlan_id(dev); |
| 2763 | } |
| 2764 | *vlan_dev = dev; |
| 2765 | return 0; |
| 2766 | } |
| 2767 | |
| 2768 | static int cnic_get_v4_route(struct sockaddr_in *dst_addr, |
| 2769 | struct dst_entry **dst) |
| 2770 | { |
Randy Dunlap | faea56c | 2009-06-12 11:43:48 -0700 | [diff] [blame] | 2771 | #if defined(CONFIG_INET) |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2772 | struct flowi fl; |
| 2773 | int err; |
| 2774 | struct rtable *rt; |
| 2775 | |
| 2776 | memset(&fl, 0, sizeof(fl)); |
| 2777 | fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr; |
| 2778 | |
| 2779 | err = ip_route_output_key(&init_net, &rt, &fl); |
| 2780 | if (!err) |
| 2781 | *dst = &rt->u.dst; |
| 2782 | return err; |
Randy Dunlap | faea56c | 2009-06-12 11:43:48 -0700 | [diff] [blame] | 2783 | #else |
| 2784 | return -ENETUNREACH; |
| 2785 | #endif |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2786 | } |
| 2787 | |
| 2788 | static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr, |
| 2789 | struct dst_entry **dst) |
| 2790 | { |
Randy Dunlap | faea56c | 2009-06-12 11:43:48 -0700 | [diff] [blame] | 2791 | #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE)) |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2792 | struct flowi fl; |
| 2793 | |
| 2794 | memset(&fl, 0, sizeof(fl)); |
| 2795 | ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr); |
| 2796 | if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL) |
| 2797 | fl.oif = dst_addr->sin6_scope_id; |
| 2798 | |
| 2799 | *dst = ip6_route_output(&init_net, NULL, &fl); |
| 2800 | if (*dst) |
| 2801 | return 0; |
| 2802 | #endif |
| 2803 | |
| 2804 | return -ENETUNREACH; |
| 2805 | } |
| 2806 | |
| 2807 | static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr, |
| 2808 | int ulp_type) |
| 2809 | { |
| 2810 | struct cnic_dev *dev = NULL; |
| 2811 | struct dst_entry *dst; |
| 2812 | struct net_device *netdev = NULL; |
| 2813 | int err = -ENETUNREACH; |
| 2814 | |
| 2815 | if (dst_addr->sin_family == AF_INET) |
| 2816 | err = cnic_get_v4_route(dst_addr, &dst); |
| 2817 | else if (dst_addr->sin_family == AF_INET6) { |
| 2818 | struct sockaddr_in6 *dst_addr6 = |
| 2819 | (struct sockaddr_in6 *) dst_addr; |
| 2820 | |
| 2821 | err = cnic_get_v6_route(dst_addr6, &dst); |
| 2822 | } else |
| 2823 | return NULL; |
| 2824 | |
| 2825 | if (err) |
| 2826 | return NULL; |
| 2827 | |
| 2828 | if (!dst->dev) |
| 2829 | goto done; |
| 2830 | |
| 2831 | cnic_get_vlan(dst->dev, &netdev); |
| 2832 | |
| 2833 | dev = cnic_from_netdev(netdev); |
| 2834 | |
| 2835 | done: |
| 2836 | dst_release(dst); |
| 2837 | if (dev) |
| 2838 | cnic_put(dev); |
| 2839 | return dev; |
| 2840 | } |
| 2841 | |
| 2842 | static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr) |
| 2843 | { |
| 2844 | struct cnic_dev *dev = csk->dev; |
| 2845 | struct cnic_local *cp = dev->cnic_priv; |
| 2846 | |
| 2847 | return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk); |
| 2848 | } |
| 2849 | |
| 2850 | static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr) |
| 2851 | { |
| 2852 | struct cnic_dev *dev = csk->dev; |
| 2853 | struct cnic_local *cp = dev->cnic_priv; |
| 2854 | int is_v6, err, rc = -ENETUNREACH; |
| 2855 | struct dst_entry *dst; |
| 2856 | struct net_device *realdev; |
| 2857 | u32 local_port; |
| 2858 | |
| 2859 | if (saddr->local.v6.sin6_family == AF_INET6 && |
| 2860 | saddr->remote.v6.sin6_family == AF_INET6) |
| 2861 | is_v6 = 1; |
| 2862 | else if (saddr->local.v4.sin_family == AF_INET && |
| 2863 | saddr->remote.v4.sin_family == AF_INET) |
| 2864 | is_v6 = 0; |
| 2865 | else |
| 2866 | return -EINVAL; |
| 2867 | |
| 2868 | clear_bit(SK_F_IPV6, &csk->flags); |
| 2869 | |
| 2870 | if (is_v6) { |
Randy Dunlap | faea56c | 2009-06-12 11:43:48 -0700 | [diff] [blame] | 2871 | #if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE)) |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 2872 | set_bit(SK_F_IPV6, &csk->flags); |
| 2873 | err = cnic_get_v6_route(&saddr->remote.v6, &dst); |
| 2874 | if (err) |
| 2875 | return err; |
| 2876 | |
| 2877 | if (!dst || dst->error || !dst->dev) |
| 2878 | goto err_out; |
| 2879 | |
| 2880 | memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr, |
| 2881 | sizeof(struct in6_addr)); |
| 2882 | csk->dst_port = saddr->remote.v6.sin6_port; |
| 2883 | local_port = saddr->local.v6.sin6_port; |
| 2884 | #else |
| 2885 | return rc; |
| 2886 | #endif |
| 2887 | |
| 2888 | } else { |
| 2889 | err = cnic_get_v4_route(&saddr->remote.v4, &dst); |
| 2890 | if (err) |
| 2891 | return err; |
| 2892 | |
| 2893 | if (!dst || dst->error || !dst->dev) |
| 2894 | goto err_out; |
| 2895 | |
| 2896 | csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr; |
| 2897 | csk->dst_port = saddr->remote.v4.sin_port; |
| 2898 | local_port = saddr->local.v4.sin_port; |
| 2899 | } |
| 2900 | |
| 2901 | csk->vlan_id = cnic_get_vlan(dst->dev, &realdev); |
| 2902 | if (realdev != dev->netdev) |
| 2903 | goto err_out; |
| 2904 | |
| 2905 | if (local_port >= CNIC_LOCAL_PORT_MIN && |
| 2906 | local_port < CNIC_LOCAL_PORT_MAX) { |
| 2907 | if (cnic_alloc_id(&cp->csk_port_tbl, local_port)) |
| 2908 | local_port = 0; |
| 2909 | } else |
| 2910 | local_port = 0; |
| 2911 | |
| 2912 | if (!local_port) { |
| 2913 | local_port = cnic_alloc_new_id(&cp->csk_port_tbl); |
| 2914 | if (local_port == -1) { |
| 2915 | rc = -ENOMEM; |
| 2916 | goto err_out; |
| 2917 | } |
| 2918 | } |
| 2919 | csk->src_port = local_port; |
| 2920 | |
| 2921 | csk->mtu = dst_mtu(dst); |
| 2922 | rc = 0; |
| 2923 | |
| 2924 | err_out: |
| 2925 | dst_release(dst); |
| 2926 | return rc; |
| 2927 | } |
| 2928 | |
| 2929 | static void cnic_init_csk_state(struct cnic_sock *csk) |
| 2930 | { |
| 2931 | csk->state = 0; |
| 2932 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); |
| 2933 | clear_bit(SK_F_CLOSING, &csk->flags); |
| 2934 | } |
| 2935 | |
| 2936 | static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr) |
| 2937 | { |
| 2938 | int err = 0; |
| 2939 | |
| 2940 | if (!cnic_in_use(csk)) |
| 2941 | return -EINVAL; |
| 2942 | |
| 2943 | if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags)) |
| 2944 | return -EINVAL; |
| 2945 | |
| 2946 | cnic_init_csk_state(csk); |
| 2947 | |
| 2948 | err = cnic_get_route(csk, saddr); |
| 2949 | if (err) |
| 2950 | goto err_out; |
| 2951 | |
| 2952 | err = cnic_resolve_addr(csk, saddr); |
| 2953 | if (!err) |
| 2954 | return 0; |
| 2955 | |
| 2956 | err_out: |
| 2957 | clear_bit(SK_F_CONNECT_START, &csk->flags); |
| 2958 | return err; |
| 2959 | } |
| 2960 | |
| 2961 | static int cnic_cm_abort(struct cnic_sock *csk) |
| 2962 | { |
| 2963 | struct cnic_local *cp = csk->dev->cnic_priv; |
| 2964 | u32 opcode; |
| 2965 | |
| 2966 | if (!cnic_in_use(csk)) |
| 2967 | return -EINVAL; |
| 2968 | |
| 2969 | if (cnic_abort_prep(csk)) |
| 2970 | return cnic_cm_abort_req(csk); |
| 2971 | |
| 2972 | /* Getting here means that we haven't started connect, or |
| 2973 | * connect was not successful. |
| 2974 | */ |
| 2975 | |
| 2976 | csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP; |
| 2977 | if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) |
| 2978 | opcode = csk->state; |
| 2979 | else |
| 2980 | opcode = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD; |
| 2981 | cp->close_conn(csk, opcode); |
| 2982 | |
| 2983 | return 0; |
| 2984 | } |
| 2985 | |
| 2986 | static int cnic_cm_close(struct cnic_sock *csk) |
| 2987 | { |
| 2988 | if (!cnic_in_use(csk)) |
| 2989 | return -EINVAL; |
| 2990 | |
| 2991 | if (cnic_close_prep(csk)) { |
| 2992 | csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP; |
| 2993 | return cnic_cm_close_req(csk); |
| 2994 | } |
| 2995 | return 0; |
| 2996 | } |
| 2997 | |
| 2998 | static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk, |
| 2999 | u8 opcode) |
| 3000 | { |
| 3001 | struct cnic_ulp_ops *ulp_ops; |
| 3002 | int ulp_type = csk->ulp_type; |
| 3003 | |
| 3004 | rcu_read_lock(); |
| 3005 | ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]); |
| 3006 | if (ulp_ops) { |
| 3007 | if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE) |
| 3008 | ulp_ops->cm_connect_complete(csk); |
| 3009 | else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) |
| 3010 | ulp_ops->cm_close_complete(csk); |
| 3011 | else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) |
| 3012 | ulp_ops->cm_remote_abort(csk); |
| 3013 | else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP) |
| 3014 | ulp_ops->cm_abort_complete(csk); |
| 3015 | else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED) |
| 3016 | ulp_ops->cm_remote_close(csk); |
| 3017 | } |
| 3018 | rcu_read_unlock(); |
| 3019 | } |
| 3020 | |
| 3021 | static int cnic_cm_set_pg(struct cnic_sock *csk) |
| 3022 | { |
| 3023 | if (cnic_offld_prep(csk)) { |
| 3024 | if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) |
| 3025 | cnic_cm_update_pg(csk); |
| 3026 | else |
| 3027 | cnic_cm_offload_pg(csk); |
| 3028 | } |
| 3029 | return 0; |
| 3030 | } |
| 3031 | |
| 3032 | static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe) |
| 3033 | { |
| 3034 | struct cnic_local *cp = dev->cnic_priv; |
| 3035 | u32 l5_cid = kcqe->pg_host_opaque; |
| 3036 | u8 opcode = kcqe->op_code; |
| 3037 | struct cnic_sock *csk = &cp->csk_tbl[l5_cid]; |
| 3038 | |
| 3039 | csk_hold(csk); |
| 3040 | if (!cnic_in_use(csk)) |
| 3041 | goto done; |
| 3042 | |
| 3043 | if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) { |
| 3044 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); |
| 3045 | goto done; |
| 3046 | } |
| 3047 | csk->pg_cid = kcqe->pg_cid; |
| 3048 | set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags); |
| 3049 | cnic_cm_conn_req(csk); |
| 3050 | |
| 3051 | done: |
| 3052 | csk_put(csk); |
| 3053 | } |
| 3054 | |
| 3055 | static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe) |
| 3056 | { |
| 3057 | struct cnic_local *cp = dev->cnic_priv; |
| 3058 | struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe; |
| 3059 | u8 opcode = l4kcqe->op_code; |
| 3060 | u32 l5_cid; |
| 3061 | struct cnic_sock *csk; |
| 3062 | |
| 3063 | if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG || |
| 3064 | opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) { |
| 3065 | cnic_cm_process_offld_pg(dev, l4kcqe); |
| 3066 | return; |
| 3067 | } |
| 3068 | |
| 3069 | l5_cid = l4kcqe->conn_id; |
| 3070 | if (opcode & 0x80) |
| 3071 | l5_cid = l4kcqe->cid; |
| 3072 | if (l5_cid >= MAX_CM_SK_TBL_SZ) |
| 3073 | return; |
| 3074 | |
| 3075 | csk = &cp->csk_tbl[l5_cid]; |
| 3076 | csk_hold(csk); |
| 3077 | |
| 3078 | if (!cnic_in_use(csk)) { |
| 3079 | csk_put(csk); |
| 3080 | return; |
| 3081 | } |
| 3082 | |
| 3083 | switch (opcode) { |
| 3084 | case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE: |
| 3085 | if (l4kcqe->status == 0) |
| 3086 | set_bit(SK_F_OFFLD_COMPLETE, &csk->flags); |
| 3087 | |
| 3088 | smp_mb__before_clear_bit(); |
| 3089 | clear_bit(SK_F_OFFLD_SCHED, &csk->flags); |
| 3090 | cnic_cm_upcall(cp, csk, opcode); |
| 3091 | break; |
| 3092 | |
| 3093 | case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED: |
| 3094 | if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) |
| 3095 | csk->state = opcode; |
| 3096 | /* fall through */ |
| 3097 | case L4_KCQE_OPCODE_VALUE_CLOSE_COMP: |
| 3098 | case L4_KCQE_OPCODE_VALUE_RESET_COMP: |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 3099 | case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE: |
| 3100 | case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD: |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 3101 | cp->close_conn(csk, opcode); |
| 3102 | break; |
| 3103 | |
| 3104 | case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED: |
| 3105 | cnic_cm_upcall(cp, csk, opcode); |
| 3106 | break; |
| 3107 | } |
| 3108 | csk_put(csk); |
| 3109 | } |
| 3110 | |
| 3111 | static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num) |
| 3112 | { |
| 3113 | struct cnic_dev *dev = data; |
| 3114 | int i; |
| 3115 | |
| 3116 | for (i = 0; i < num; i++) |
| 3117 | cnic_cm_process_kcqe(dev, kcqe[i]); |
| 3118 | } |
| 3119 | |
| 3120 | static struct cnic_ulp_ops cm_ulp_ops = { |
| 3121 | .indicate_kcqes = cnic_cm_indicate_kcqe, |
| 3122 | }; |
| 3123 | |
| 3124 | static void cnic_cm_free_mem(struct cnic_dev *dev) |
| 3125 | { |
| 3126 | struct cnic_local *cp = dev->cnic_priv; |
| 3127 | |
| 3128 | kfree(cp->csk_tbl); |
| 3129 | cp->csk_tbl = NULL; |
| 3130 | cnic_free_id_tbl(&cp->csk_port_tbl); |
| 3131 | } |
| 3132 | |
| 3133 | static int cnic_cm_alloc_mem(struct cnic_dev *dev) |
| 3134 | { |
| 3135 | struct cnic_local *cp = dev->cnic_priv; |
| 3136 | |
| 3137 | cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ, |
| 3138 | GFP_KERNEL); |
| 3139 | if (!cp->csk_tbl) |
| 3140 | return -ENOMEM; |
| 3141 | |
| 3142 | if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE, |
| 3143 | CNIC_LOCAL_PORT_MIN)) { |
| 3144 | cnic_cm_free_mem(dev); |
| 3145 | return -ENOMEM; |
| 3146 | } |
| 3147 | return 0; |
| 3148 | } |
| 3149 | |
| 3150 | static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode) |
| 3151 | { |
| 3152 | if ((opcode == csk->state) || |
| 3153 | (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED && |
| 3154 | csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)) { |
| 3155 | if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) |
| 3156 | return 1; |
| 3157 | } |
| 3158 | return 0; |
| 3159 | } |
| 3160 | |
| 3161 | static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode) |
| 3162 | { |
| 3163 | struct cnic_dev *dev = csk->dev; |
| 3164 | struct cnic_local *cp = dev->cnic_priv; |
| 3165 | |
| 3166 | clear_bit(SK_F_CONNECT_START, &csk->flags); |
| 3167 | if (cnic_ready_to_close(csk, opcode)) { |
| 3168 | cnic_close_conn(csk); |
| 3169 | cnic_cm_upcall(cp, csk, opcode); |
| 3170 | } |
| 3171 | } |
| 3172 | |
| 3173 | static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev) |
| 3174 | { |
| 3175 | } |
| 3176 | |
| 3177 | static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev) |
| 3178 | { |
| 3179 | u32 seed; |
| 3180 | |
| 3181 | get_random_bytes(&seed, 4); |
| 3182 | cnic_ctx_wr(dev, 45, 0, seed); |
| 3183 | return 0; |
| 3184 | } |
| 3185 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 3186 | static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode) |
| 3187 | { |
| 3188 | struct cnic_dev *dev = csk->dev; |
| 3189 | struct cnic_local *cp = dev->cnic_priv; |
| 3190 | struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid]; |
| 3191 | union l5cm_specific_data l5_data; |
| 3192 | u32 cmd = 0; |
| 3193 | int close_complete = 0; |
| 3194 | |
| 3195 | switch (opcode) { |
| 3196 | case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED: |
| 3197 | case L4_KCQE_OPCODE_VALUE_CLOSE_COMP: |
| 3198 | case L4_KCQE_OPCODE_VALUE_RESET_COMP: |
| 3199 | if (cnic_ready_to_close(csk, opcode)) |
| 3200 | cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE; |
| 3201 | break; |
| 3202 | case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE: |
| 3203 | cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD; |
| 3204 | break; |
| 3205 | case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD: |
| 3206 | close_complete = 1; |
| 3207 | break; |
| 3208 | } |
| 3209 | if (cmd) { |
| 3210 | memset(&l5_data, 0, sizeof(l5_data)); |
| 3211 | |
| 3212 | cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE, |
| 3213 | &l5_data); |
| 3214 | } else if (close_complete) { |
| 3215 | ctx->timestamp = jiffies; |
| 3216 | cnic_close_conn(csk); |
| 3217 | cnic_cm_upcall(cp, csk, csk->state); |
| 3218 | } |
| 3219 | } |
| 3220 | |
| 3221 | static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev) |
| 3222 | { |
| 3223 | } |
| 3224 | |
| 3225 | static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev) |
| 3226 | { |
| 3227 | struct cnic_local *cp = dev->cnic_priv; |
| 3228 | int func = CNIC_FUNC(cp); |
| 3229 | |
| 3230 | cnic_init_bnx2x_mac(dev); |
| 3231 | cnic_bnx2x_set_tcp_timestamp(dev, 1); |
| 3232 | |
| 3233 | CNIC_WR16(dev, BAR_XSTRORM_INTMEM + |
| 3234 | XSTORM_ISCSI_LOCAL_VLAN_OFFSET(func), 0); |
| 3235 | |
| 3236 | CNIC_WR(dev, BAR_XSTRORM_INTMEM + |
| 3237 | XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(func), 1); |
| 3238 | CNIC_WR(dev, BAR_XSTRORM_INTMEM + |
| 3239 | XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(func), |
| 3240 | DEF_MAX_DA_COUNT); |
| 3241 | |
| 3242 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 3243 | XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(func), DEF_TTL); |
| 3244 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 3245 | XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(func), DEF_TOS); |
| 3246 | CNIC_WR8(dev, BAR_XSTRORM_INTMEM + |
| 3247 | XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(func), 2); |
| 3248 | CNIC_WR(dev, BAR_XSTRORM_INTMEM + |
| 3249 | XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(func), DEF_SWS_TIMER); |
| 3250 | |
| 3251 | CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(func), |
| 3252 | DEF_MAX_CWND); |
| 3253 | return 0; |
| 3254 | } |
| 3255 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 3256 | static int cnic_cm_open(struct cnic_dev *dev) |
| 3257 | { |
| 3258 | struct cnic_local *cp = dev->cnic_priv; |
| 3259 | int err; |
| 3260 | |
| 3261 | err = cnic_cm_alloc_mem(dev); |
| 3262 | if (err) |
| 3263 | return err; |
| 3264 | |
| 3265 | err = cp->start_cm(dev); |
| 3266 | |
| 3267 | if (err) |
| 3268 | goto err_out; |
| 3269 | |
| 3270 | dev->cm_create = cnic_cm_create; |
| 3271 | dev->cm_destroy = cnic_cm_destroy; |
| 3272 | dev->cm_connect = cnic_cm_connect; |
| 3273 | dev->cm_abort = cnic_cm_abort; |
| 3274 | dev->cm_close = cnic_cm_close; |
| 3275 | dev->cm_select_dev = cnic_cm_select_dev; |
| 3276 | |
| 3277 | cp->ulp_handle[CNIC_ULP_L4] = dev; |
| 3278 | rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops); |
| 3279 | return 0; |
| 3280 | |
| 3281 | err_out: |
| 3282 | cnic_cm_free_mem(dev); |
| 3283 | return err; |
| 3284 | } |
| 3285 | |
| 3286 | static int cnic_cm_shutdown(struct cnic_dev *dev) |
| 3287 | { |
| 3288 | struct cnic_local *cp = dev->cnic_priv; |
| 3289 | int i; |
| 3290 | |
| 3291 | cp->stop_cm(dev); |
| 3292 | |
| 3293 | if (!cp->csk_tbl) |
| 3294 | return 0; |
| 3295 | |
| 3296 | for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) { |
| 3297 | struct cnic_sock *csk = &cp->csk_tbl[i]; |
| 3298 | |
| 3299 | clear_bit(SK_F_INUSE, &csk->flags); |
| 3300 | cnic_cm_cleanup(csk); |
| 3301 | } |
| 3302 | cnic_cm_free_mem(dev); |
| 3303 | |
| 3304 | return 0; |
| 3305 | } |
| 3306 | |
| 3307 | static void cnic_init_context(struct cnic_dev *dev, u32 cid) |
| 3308 | { |
| 3309 | struct cnic_local *cp = dev->cnic_priv; |
| 3310 | u32 cid_addr; |
| 3311 | int i; |
| 3312 | |
| 3313 | if (CHIP_NUM(cp) == CHIP_NUM_5709) |
| 3314 | return; |
| 3315 | |
| 3316 | cid_addr = GET_CID_ADDR(cid); |
| 3317 | |
| 3318 | for (i = 0; i < CTX_SIZE; i += 4) |
| 3319 | cnic_ctx_wr(dev, cid_addr, i, 0); |
| 3320 | } |
| 3321 | |
| 3322 | static int cnic_setup_5709_context(struct cnic_dev *dev, int valid) |
| 3323 | { |
| 3324 | struct cnic_local *cp = dev->cnic_priv; |
| 3325 | int ret = 0, i; |
| 3326 | u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0; |
| 3327 | |
| 3328 | if (CHIP_NUM(cp) != CHIP_NUM_5709) |
| 3329 | return 0; |
| 3330 | |
| 3331 | for (i = 0; i < cp->ctx_blks; i++) { |
| 3332 | int j; |
| 3333 | u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk; |
| 3334 | u32 val; |
| 3335 | |
| 3336 | memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE); |
| 3337 | |
| 3338 | CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0, |
| 3339 | (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit); |
| 3340 | CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1, |
| 3341 | (u64) cp->ctx_arr[i].mapping >> 32); |
| 3342 | CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx | |
| 3343 | BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ); |
| 3344 | for (j = 0; j < 10; j++) { |
| 3345 | |
| 3346 | val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL); |
| 3347 | if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ)) |
| 3348 | break; |
| 3349 | udelay(5); |
| 3350 | } |
| 3351 | if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) { |
| 3352 | ret = -EBUSY; |
| 3353 | break; |
| 3354 | } |
| 3355 | } |
| 3356 | return ret; |
| 3357 | } |
| 3358 | |
| 3359 | static void cnic_free_irq(struct cnic_dev *dev) |
| 3360 | { |
| 3361 | struct cnic_local *cp = dev->cnic_priv; |
| 3362 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 3363 | |
| 3364 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { |
| 3365 | cp->disable_int_sync(dev); |
| 3366 | tasklet_disable(&cp->cnic_irq_task); |
| 3367 | free_irq(ethdev->irq_arr[0].vector, dev); |
| 3368 | } |
| 3369 | } |
| 3370 | |
| 3371 | static int cnic_init_bnx2_irq(struct cnic_dev *dev) |
| 3372 | { |
| 3373 | struct cnic_local *cp = dev->cnic_priv; |
| 3374 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 3375 | |
| 3376 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { |
| 3377 | int err, i = 0; |
| 3378 | int sblk_num = cp->status_blk_num; |
| 3379 | u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) + |
| 3380 | BNX2_HC_SB_CONFIG_1; |
| 3381 | |
| 3382 | CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT); |
| 3383 | |
| 3384 | CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8); |
| 3385 | CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220); |
| 3386 | CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220); |
| 3387 | |
| 3388 | cp->bnx2_status_blk = cp->status_blk; |
| 3389 | cp->last_status_idx = cp->bnx2_status_blk->status_idx; |
| 3390 | tasklet_init(&cp->cnic_irq_task, &cnic_service_bnx2_msix, |
| 3391 | (unsigned long) dev); |
| 3392 | err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, |
| 3393 | "cnic", dev); |
| 3394 | if (err) { |
| 3395 | tasklet_disable(&cp->cnic_irq_task); |
| 3396 | return err; |
| 3397 | } |
| 3398 | while (cp->bnx2_status_blk->status_completion_producer_index && |
| 3399 | i < 10) { |
| 3400 | CNIC_WR(dev, BNX2_HC_COALESCE_NOW, |
| 3401 | 1 << (11 + sblk_num)); |
| 3402 | udelay(10); |
| 3403 | i++; |
| 3404 | barrier(); |
| 3405 | } |
| 3406 | if (cp->bnx2_status_blk->status_completion_producer_index) { |
| 3407 | cnic_free_irq(dev); |
| 3408 | goto failed; |
| 3409 | } |
| 3410 | |
| 3411 | } else { |
| 3412 | struct status_block *sblk = cp->status_blk; |
| 3413 | u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND); |
| 3414 | int i = 0; |
| 3415 | |
| 3416 | while (sblk->status_completion_producer_index && i < 10) { |
| 3417 | CNIC_WR(dev, BNX2_HC_COMMAND, |
| 3418 | hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT); |
| 3419 | udelay(10); |
| 3420 | i++; |
| 3421 | barrier(); |
| 3422 | } |
| 3423 | if (sblk->status_completion_producer_index) |
| 3424 | goto failed; |
| 3425 | |
| 3426 | } |
| 3427 | return 0; |
| 3428 | |
| 3429 | failed: |
| 3430 | printk(KERN_ERR PFX "%s: " "KCQ index not resetting to 0.\n", |
| 3431 | dev->netdev->name); |
| 3432 | return -EBUSY; |
| 3433 | } |
| 3434 | |
| 3435 | static void cnic_enable_bnx2_int(struct cnic_dev *dev) |
| 3436 | { |
| 3437 | struct cnic_local *cp = dev->cnic_priv; |
| 3438 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 3439 | |
| 3440 | if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)) |
| 3441 | return; |
| 3442 | |
| 3443 | CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | |
| 3444 | BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx); |
| 3445 | } |
| 3446 | |
| 3447 | static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev) |
| 3448 | { |
| 3449 | struct cnic_local *cp = dev->cnic_priv; |
| 3450 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 3451 | |
| 3452 | if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)) |
| 3453 | return; |
| 3454 | |
| 3455 | CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | |
| 3456 | BNX2_PCICFG_INT_ACK_CMD_MASK_INT); |
| 3457 | CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD); |
| 3458 | synchronize_irq(ethdev->irq_arr[0].vector); |
| 3459 | } |
| 3460 | |
| 3461 | static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev) |
| 3462 | { |
| 3463 | struct cnic_local *cp = dev->cnic_priv; |
| 3464 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 3465 | u32 cid_addr, tx_cid, sb_id; |
| 3466 | u32 val, offset0, offset1, offset2, offset3; |
| 3467 | int i; |
| 3468 | struct tx_bd *txbd; |
| 3469 | dma_addr_t buf_map; |
| 3470 | struct status_block *s_blk = cp->status_blk; |
| 3471 | |
| 3472 | sb_id = cp->status_blk_num; |
| 3473 | tx_cid = 20; |
| 3474 | cnic_init_context(dev, tx_cid); |
| 3475 | cnic_init_context(dev, tx_cid + 1); |
| 3476 | cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2; |
| 3477 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { |
| 3478 | struct status_block_msix *sblk = cp->status_blk; |
| 3479 | |
| 3480 | tx_cid = TX_TSS_CID + sb_id - 1; |
| 3481 | cnic_init_context(dev, tx_cid); |
| 3482 | CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) | |
| 3483 | (TX_TSS_CID << 7)); |
| 3484 | cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index; |
| 3485 | } |
| 3486 | cp->tx_cons = *cp->tx_cons_ptr; |
| 3487 | |
| 3488 | cid_addr = GET_CID_ADDR(tx_cid); |
| 3489 | if (CHIP_NUM(cp) == CHIP_NUM_5709) { |
| 3490 | u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40; |
| 3491 | |
| 3492 | for (i = 0; i < PHY_CTX_SIZE; i += 4) |
| 3493 | cnic_ctx_wr(dev, cid_addr2, i, 0); |
| 3494 | |
| 3495 | offset0 = BNX2_L2CTX_TYPE_XI; |
| 3496 | offset1 = BNX2_L2CTX_CMD_TYPE_XI; |
| 3497 | offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI; |
| 3498 | offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI; |
| 3499 | } else { |
| 3500 | offset0 = BNX2_L2CTX_TYPE; |
| 3501 | offset1 = BNX2_L2CTX_CMD_TYPE; |
| 3502 | offset2 = BNX2_L2CTX_TBDR_BHADDR_HI; |
| 3503 | offset3 = BNX2_L2CTX_TBDR_BHADDR_LO; |
| 3504 | } |
| 3505 | val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2; |
| 3506 | cnic_ctx_wr(dev, cid_addr, offset0, val); |
| 3507 | |
| 3508 | val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16); |
| 3509 | cnic_ctx_wr(dev, cid_addr, offset1, val); |
| 3510 | |
| 3511 | txbd = (struct tx_bd *) cp->l2_ring; |
| 3512 | |
| 3513 | buf_map = cp->l2_buf_map; |
| 3514 | for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) { |
| 3515 | txbd->tx_bd_haddr_hi = (u64) buf_map >> 32; |
| 3516 | txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff; |
| 3517 | } |
| 3518 | val = (u64) cp->l2_ring_map >> 32; |
| 3519 | cnic_ctx_wr(dev, cid_addr, offset2, val); |
| 3520 | txbd->tx_bd_haddr_hi = val; |
| 3521 | |
| 3522 | val = (u64) cp->l2_ring_map & 0xffffffff; |
| 3523 | cnic_ctx_wr(dev, cid_addr, offset3, val); |
| 3524 | txbd->tx_bd_haddr_lo = val; |
| 3525 | } |
| 3526 | |
| 3527 | static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev) |
| 3528 | { |
| 3529 | struct cnic_local *cp = dev->cnic_priv; |
| 3530 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 3531 | u32 cid_addr, sb_id, val, coal_reg, coal_val; |
| 3532 | int i; |
| 3533 | struct rx_bd *rxbd; |
| 3534 | struct status_block *s_blk = cp->status_blk; |
| 3535 | |
| 3536 | sb_id = cp->status_blk_num; |
| 3537 | cnic_init_context(dev, 2); |
| 3538 | cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2; |
| 3539 | coal_reg = BNX2_HC_COMMAND; |
| 3540 | coal_val = CNIC_RD(dev, coal_reg); |
| 3541 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { |
| 3542 | struct status_block_msix *sblk = cp->status_blk; |
| 3543 | |
| 3544 | cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index; |
| 3545 | coal_reg = BNX2_HC_COALESCE_NOW; |
| 3546 | coal_val = 1 << (11 + sb_id); |
| 3547 | } |
| 3548 | i = 0; |
| 3549 | while (!(*cp->rx_cons_ptr != 0) && i < 10) { |
| 3550 | CNIC_WR(dev, coal_reg, coal_val); |
| 3551 | udelay(10); |
| 3552 | i++; |
| 3553 | barrier(); |
| 3554 | } |
| 3555 | cp->rx_cons = *cp->rx_cons_ptr; |
| 3556 | |
| 3557 | cid_addr = GET_CID_ADDR(2); |
| 3558 | val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE | |
| 3559 | BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8); |
| 3560 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val); |
| 3561 | |
| 3562 | if (sb_id == 0) |
Michael Chan | d054938 | 2009-10-28 03:41:59 -0700 | [diff] [blame] | 3563 | val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT; |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 3564 | else |
Michael Chan | d054938 | 2009-10-28 03:41:59 -0700 | [diff] [blame] | 3565 | val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 3566 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val); |
| 3567 | |
| 3568 | rxbd = (struct rx_bd *) (cp->l2_ring + BCM_PAGE_SIZE); |
| 3569 | for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) { |
| 3570 | dma_addr_t buf_map; |
| 3571 | int n = (i % cp->l2_rx_ring_size) + 1; |
| 3572 | |
| 3573 | buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size); |
| 3574 | rxbd->rx_bd_len = cp->l2_single_buf_size; |
| 3575 | rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END; |
| 3576 | rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32; |
| 3577 | rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff; |
| 3578 | } |
| 3579 | val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32; |
| 3580 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val); |
| 3581 | rxbd->rx_bd_haddr_hi = val; |
| 3582 | |
| 3583 | val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff; |
| 3584 | cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val); |
| 3585 | rxbd->rx_bd_haddr_lo = val; |
| 3586 | |
| 3587 | val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD); |
| 3588 | cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2)); |
| 3589 | } |
| 3590 | |
| 3591 | static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev) |
| 3592 | { |
| 3593 | struct kwqe *wqes[1], l2kwqe; |
| 3594 | |
| 3595 | memset(&l2kwqe, 0, sizeof(l2kwqe)); |
| 3596 | wqes[0] = &l2kwqe; |
| 3597 | l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_FLAGS_LAYER_SHIFT) | |
| 3598 | (L2_KWQE_OPCODE_VALUE_FLUSH << |
| 3599 | KWQE_OPCODE_SHIFT) | 2; |
| 3600 | dev->submit_kwqes(dev, wqes, 1); |
| 3601 | } |
| 3602 | |
| 3603 | static void cnic_set_bnx2_mac(struct cnic_dev *dev) |
| 3604 | { |
| 3605 | struct cnic_local *cp = dev->cnic_priv; |
| 3606 | u32 val; |
| 3607 | |
| 3608 | val = cp->func << 2; |
| 3609 | |
| 3610 | cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val); |
| 3611 | |
| 3612 | val = cnic_reg_rd_ind(dev, cp->shmem_base + |
| 3613 | BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER); |
| 3614 | dev->mac_addr[0] = (u8) (val >> 8); |
| 3615 | dev->mac_addr[1] = (u8) val; |
| 3616 | |
| 3617 | CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val); |
| 3618 | |
| 3619 | val = cnic_reg_rd_ind(dev, cp->shmem_base + |
| 3620 | BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER); |
| 3621 | dev->mac_addr[2] = (u8) (val >> 24); |
| 3622 | dev->mac_addr[3] = (u8) (val >> 16); |
| 3623 | dev->mac_addr[4] = (u8) (val >> 8); |
| 3624 | dev->mac_addr[5] = (u8) val; |
| 3625 | |
| 3626 | CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val); |
| 3627 | |
| 3628 | val = 4 | BNX2_RPM_SORT_USER2_BC_EN; |
| 3629 | if (CHIP_NUM(cp) != CHIP_NUM_5709) |
| 3630 | val |= BNX2_RPM_SORT_USER2_PROM_VLAN; |
| 3631 | |
| 3632 | CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0); |
| 3633 | CNIC_WR(dev, BNX2_RPM_SORT_USER2, val); |
| 3634 | CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA); |
| 3635 | } |
| 3636 | |
| 3637 | static int cnic_start_bnx2_hw(struct cnic_dev *dev) |
| 3638 | { |
| 3639 | struct cnic_local *cp = dev->cnic_priv; |
| 3640 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 3641 | struct status_block *sblk = cp->status_blk; |
| 3642 | u32 val; |
| 3643 | int err; |
| 3644 | |
| 3645 | cnic_set_bnx2_mac(dev); |
| 3646 | |
| 3647 | val = CNIC_RD(dev, BNX2_MQ_CONFIG); |
| 3648 | val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE; |
| 3649 | if (BCM_PAGE_BITS > 12) |
| 3650 | val |= (12 - 8) << 4; |
| 3651 | else |
| 3652 | val |= (BCM_PAGE_BITS - 8) << 4; |
| 3653 | |
| 3654 | CNIC_WR(dev, BNX2_MQ_CONFIG, val); |
| 3655 | |
| 3656 | CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8); |
| 3657 | CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220); |
| 3658 | CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220); |
| 3659 | |
| 3660 | err = cnic_setup_5709_context(dev, 1); |
| 3661 | if (err) |
| 3662 | return err; |
| 3663 | |
| 3664 | cnic_init_context(dev, KWQ_CID); |
| 3665 | cnic_init_context(dev, KCQ_CID); |
| 3666 | |
| 3667 | cp->kwq_cid_addr = GET_CID_ADDR(KWQ_CID); |
| 3668 | cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX; |
| 3669 | |
| 3670 | cp->max_kwq_idx = MAX_KWQ_IDX; |
| 3671 | cp->kwq_prod_idx = 0; |
| 3672 | cp->kwq_con_idx = 0; |
| 3673 | cp->cnic_local_flags |= CNIC_LCL_FL_KWQ_INIT; |
| 3674 | |
| 3675 | if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708) |
| 3676 | cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15; |
| 3677 | else |
| 3678 | cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index; |
| 3679 | |
| 3680 | /* Initialize the kernel work queue context. */ |
| 3681 | val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE | |
| 3682 | (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ; |
| 3683 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_TYPE, val); |
| 3684 | |
| 3685 | val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16; |
| 3686 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val); |
| 3687 | |
| 3688 | val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT; |
| 3689 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val); |
| 3690 | |
| 3691 | val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32); |
| 3692 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val); |
| 3693 | |
| 3694 | val = (u32) cp->kwq_info.pgtbl_map; |
| 3695 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val); |
| 3696 | |
| 3697 | cp->kcq_cid_addr = GET_CID_ADDR(KCQ_CID); |
| 3698 | cp->kcq_io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX; |
| 3699 | |
| 3700 | cp->kcq_prod_idx = 0; |
| 3701 | |
| 3702 | /* Initialize the kernel complete queue context. */ |
| 3703 | val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE | |
| 3704 | (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ; |
| 3705 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_TYPE, val); |
| 3706 | |
| 3707 | val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16; |
| 3708 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val); |
| 3709 | |
| 3710 | val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT; |
| 3711 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val); |
| 3712 | |
| 3713 | val = (u32) ((u64) cp->kcq_info.pgtbl_map >> 32); |
| 3714 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val); |
| 3715 | |
| 3716 | val = (u32) cp->kcq_info.pgtbl_map; |
| 3717 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val); |
| 3718 | |
| 3719 | cp->int_num = 0; |
| 3720 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { |
| 3721 | u32 sb_id = cp->status_blk_num; |
Michael Chan | d054938 | 2009-10-28 03:41:59 -0700 | [diff] [blame] | 3722 | u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 3723 | |
| 3724 | cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT; |
| 3725 | cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb); |
| 3726 | cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb); |
| 3727 | } |
| 3728 | |
| 3729 | /* Enable Commnad Scheduler notification when we write to the |
| 3730 | * host producer index of the kernel contexts. */ |
| 3731 | CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2); |
| 3732 | |
| 3733 | /* Enable Command Scheduler notification when we write to either |
| 3734 | * the Send Queue or Receive Queue producer indexes of the kernel |
| 3735 | * bypass contexts. */ |
| 3736 | CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7); |
| 3737 | CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7); |
| 3738 | |
| 3739 | /* Notify COM when the driver post an application buffer. */ |
| 3740 | CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000); |
| 3741 | |
| 3742 | /* Set the CP and COM doorbells. These two processors polls the |
| 3743 | * doorbell for a non zero value before running. This must be done |
| 3744 | * after setting up the kernel queue contexts. */ |
| 3745 | cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1); |
| 3746 | cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1); |
| 3747 | |
| 3748 | cnic_init_bnx2_tx_ring(dev); |
| 3749 | cnic_init_bnx2_rx_ring(dev); |
| 3750 | |
| 3751 | err = cnic_init_bnx2_irq(dev); |
| 3752 | if (err) { |
| 3753 | printk(KERN_ERR PFX "%s: cnic_init_irq failed\n", |
| 3754 | dev->netdev->name); |
| 3755 | cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0); |
| 3756 | cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0); |
| 3757 | return err; |
| 3758 | } |
| 3759 | |
| 3760 | return 0; |
| 3761 | } |
| 3762 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 3763 | static void cnic_setup_bnx2x_context(struct cnic_dev *dev) |
| 3764 | { |
| 3765 | struct cnic_local *cp = dev->cnic_priv; |
| 3766 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 3767 | u32 start_offset = ethdev->ctx_tbl_offset; |
| 3768 | int i; |
| 3769 | |
| 3770 | for (i = 0; i < cp->ctx_blks; i++) { |
| 3771 | struct cnic_ctx *ctx = &cp->ctx_arr[i]; |
| 3772 | dma_addr_t map = ctx->mapping; |
| 3773 | |
| 3774 | if (cp->ctx_align) { |
| 3775 | unsigned long mask = cp->ctx_align - 1; |
| 3776 | |
| 3777 | map = (map + mask) & ~mask; |
| 3778 | } |
| 3779 | |
| 3780 | cnic_ctx_tbl_wr(dev, start_offset + i, map); |
| 3781 | } |
| 3782 | } |
| 3783 | |
| 3784 | static int cnic_init_bnx2x_irq(struct cnic_dev *dev) |
| 3785 | { |
| 3786 | struct cnic_local *cp = dev->cnic_priv; |
| 3787 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 3788 | int err = 0; |
| 3789 | |
| 3790 | tasklet_init(&cp->cnic_irq_task, &cnic_service_bnx2x_bh, |
| 3791 | (unsigned long) dev); |
| 3792 | if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { |
| 3793 | err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, |
| 3794 | "cnic", dev); |
| 3795 | if (err) |
| 3796 | tasklet_disable(&cp->cnic_irq_task); |
| 3797 | } |
| 3798 | return err; |
| 3799 | } |
| 3800 | |
| 3801 | static void cnic_enable_bnx2x_int(struct cnic_dev *dev) |
| 3802 | { |
| 3803 | struct cnic_local *cp = dev->cnic_priv; |
| 3804 | u8 sb_id = cp->status_blk_num; |
| 3805 | int port = CNIC_PORT(cp); |
| 3806 | |
| 3807 | CNIC_WR8(dev, BAR_CSTRORM_INTMEM + |
| 3808 | CSTORM_SB_HC_TIMEOUT_C_OFFSET(port, sb_id, |
| 3809 | HC_INDEX_C_ISCSI_EQ_CONS), |
| 3810 | 64 / 12); |
| 3811 | CNIC_WR16(dev, BAR_CSTRORM_INTMEM + |
| 3812 | CSTORM_SB_HC_DISABLE_C_OFFSET(port, sb_id, |
| 3813 | HC_INDEX_C_ISCSI_EQ_CONS), 0); |
| 3814 | } |
| 3815 | |
| 3816 | static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev) |
| 3817 | { |
| 3818 | } |
| 3819 | |
| 3820 | static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev) |
| 3821 | { |
| 3822 | struct cnic_local *cp = dev->cnic_priv; |
| 3823 | union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) cp->l2_ring; |
| 3824 | struct eth_context *context; |
| 3825 | struct regpair context_addr; |
| 3826 | dma_addr_t buf_map; |
| 3827 | int func = CNIC_FUNC(cp); |
| 3828 | int port = CNIC_PORT(cp); |
| 3829 | int i; |
| 3830 | int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp)); |
| 3831 | u32 val; |
| 3832 | |
| 3833 | memset(txbd, 0, BCM_PAGE_SIZE); |
| 3834 | |
| 3835 | buf_map = cp->l2_buf_map; |
| 3836 | for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) { |
| 3837 | struct eth_tx_start_bd *start_bd = &txbd->start_bd; |
| 3838 | struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd); |
| 3839 | |
| 3840 | start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32); |
| 3841 | start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff); |
| 3842 | reg_bd->addr_hi = start_bd->addr_hi; |
| 3843 | reg_bd->addr_lo = start_bd->addr_lo + 0x10; |
| 3844 | start_bd->nbytes = cpu_to_le16(0x10); |
| 3845 | start_bd->nbd = cpu_to_le16(3); |
| 3846 | start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD; |
| 3847 | start_bd->general_data = (UNICAST_ADDRESS << |
| 3848 | ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT); |
| 3849 | start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT); |
| 3850 | |
| 3851 | } |
| 3852 | context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 1, &context_addr); |
| 3853 | |
| 3854 | val = (u64) cp->l2_ring_map >> 32; |
| 3855 | txbd->next_bd.addr_hi = cpu_to_le32(val); |
| 3856 | |
| 3857 | context->xstorm_st_context.tx_bd_page_base_hi = val; |
| 3858 | |
| 3859 | val = (u64) cp->l2_ring_map & 0xffffffff; |
| 3860 | txbd->next_bd.addr_lo = cpu_to_le32(val); |
| 3861 | |
| 3862 | context->xstorm_st_context.tx_bd_page_base_lo = val; |
| 3863 | |
| 3864 | context->cstorm_st_context.sb_index_number = |
| 3865 | HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS; |
| 3866 | context->cstorm_st_context.status_block_id = BNX2X_DEF_SB_ID; |
| 3867 | |
| 3868 | context->xstorm_st_context.statistics_data = (cli | |
| 3869 | XSTORM_ETH_ST_CONTEXT_STATISTICS_ENABLE); |
| 3870 | |
| 3871 | context->xstorm_ag_context.cdu_reserved = |
| 3872 | CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func), |
| 3873 | CDU_REGION_NUMBER_XCM_AG, |
| 3874 | ETH_CONNECTION_TYPE); |
| 3875 | |
| 3876 | /* reset xstorm per client statistics */ |
| 3877 | val = BAR_XSTRORM_INTMEM + |
| 3878 | XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli); |
| 3879 | for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++) |
| 3880 | CNIC_WR(dev, val + i * 4, 0); |
| 3881 | |
| 3882 | cp->tx_cons_ptr = |
| 3883 | &cp->bnx2x_def_status_blk->c_def_status_block.index_values[ |
| 3884 | HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS]; |
| 3885 | } |
| 3886 | |
| 3887 | static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev) |
| 3888 | { |
| 3889 | struct cnic_local *cp = dev->cnic_priv; |
| 3890 | struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (cp->l2_ring + |
| 3891 | BCM_PAGE_SIZE); |
| 3892 | struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *) |
| 3893 | (cp->l2_ring + (2 * BCM_PAGE_SIZE)); |
| 3894 | struct eth_context *context; |
| 3895 | struct regpair context_addr; |
| 3896 | int i; |
| 3897 | int port = CNIC_PORT(cp); |
| 3898 | int func = CNIC_FUNC(cp); |
| 3899 | int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp)); |
| 3900 | u32 val; |
| 3901 | struct tstorm_eth_client_config tstorm_client = {0}; |
| 3902 | |
| 3903 | for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) { |
| 3904 | dma_addr_t buf_map; |
| 3905 | int n = (i % cp->l2_rx_ring_size) + 1; |
| 3906 | |
| 3907 | buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size); |
| 3908 | rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32); |
| 3909 | rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff); |
| 3910 | } |
| 3911 | context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 0, &context_addr); |
| 3912 | |
| 3913 | val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32; |
| 3914 | rxbd->addr_hi = cpu_to_le32(val); |
| 3915 | |
| 3916 | context->ustorm_st_context.common.bd_page_base_hi = val; |
| 3917 | |
| 3918 | val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff; |
| 3919 | rxbd->addr_lo = cpu_to_le32(val); |
| 3920 | |
| 3921 | context->ustorm_st_context.common.bd_page_base_lo = val; |
| 3922 | |
| 3923 | context->ustorm_st_context.common.sb_index_numbers = |
| 3924 | BNX2X_ISCSI_RX_SB_INDEX_NUM; |
| 3925 | context->ustorm_st_context.common.clientId = cli; |
| 3926 | context->ustorm_st_context.common.status_block_id = BNX2X_DEF_SB_ID; |
| 3927 | context->ustorm_st_context.common.flags = |
| 3928 | USTORM_ETH_ST_CONTEXT_CONFIG_ENABLE_STATISTICS; |
| 3929 | context->ustorm_st_context.common.statistics_counter_id = cli; |
| 3930 | context->ustorm_st_context.common.mc_alignment_log_size = 0; |
| 3931 | context->ustorm_st_context.common.bd_buff_size = |
| 3932 | cp->l2_single_buf_size; |
| 3933 | |
| 3934 | context->ustorm_ag_context.cdu_usage = |
| 3935 | CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func), |
| 3936 | CDU_REGION_NUMBER_UCM_AG, |
| 3937 | ETH_CONNECTION_TYPE); |
| 3938 | |
| 3939 | rxcqe += BNX2X_MAX_RCQ_DESC_CNT; |
| 3940 | val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) >> 32; |
| 3941 | rxcqe->addr_hi = cpu_to_le32(val); |
| 3942 | |
| 3943 | CNIC_WR(dev, BAR_USTRORM_INTMEM + |
| 3944 | USTORM_CQE_PAGE_BASE_OFFSET(port, cli) + 4, val); |
| 3945 | |
| 3946 | CNIC_WR(dev, BAR_USTRORM_INTMEM + |
| 3947 | USTORM_CQE_PAGE_NEXT_OFFSET(port, cli) + 4, val); |
| 3948 | |
| 3949 | val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff; |
| 3950 | rxcqe->addr_lo = cpu_to_le32(val); |
| 3951 | |
| 3952 | CNIC_WR(dev, BAR_USTRORM_INTMEM + |
| 3953 | USTORM_CQE_PAGE_BASE_OFFSET(port, cli), val); |
| 3954 | |
| 3955 | CNIC_WR(dev, BAR_USTRORM_INTMEM + |
| 3956 | USTORM_CQE_PAGE_NEXT_OFFSET(port, cli), val); |
| 3957 | |
| 3958 | /* client tstorm info */ |
| 3959 | tstorm_client.mtu = cp->l2_single_buf_size - 14; |
| 3960 | tstorm_client.config_flags = |
| 3961 | (TSTORM_ETH_CLIENT_CONFIG_E1HOV_REM_ENABLE | |
| 3962 | TSTORM_ETH_CLIENT_CONFIG_STATSITICS_ENABLE); |
| 3963 | tstorm_client.statistics_counter_id = cli; |
| 3964 | |
| 3965 | CNIC_WR(dev, BAR_TSTRORM_INTMEM + |
| 3966 | TSTORM_CLIENT_CONFIG_OFFSET(port, cli), |
| 3967 | ((u32 *)&tstorm_client)[0]); |
| 3968 | CNIC_WR(dev, BAR_TSTRORM_INTMEM + |
| 3969 | TSTORM_CLIENT_CONFIG_OFFSET(port, cli) + 4, |
| 3970 | ((u32 *)&tstorm_client)[1]); |
| 3971 | |
| 3972 | /* reset tstorm per client statistics */ |
| 3973 | val = BAR_TSTRORM_INTMEM + |
| 3974 | TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli); |
| 3975 | for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++) |
| 3976 | CNIC_WR(dev, val + i * 4, 0); |
| 3977 | |
| 3978 | /* reset ustorm per client statistics */ |
| 3979 | val = BAR_USTRORM_INTMEM + |
| 3980 | USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli); |
| 3981 | for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++) |
| 3982 | CNIC_WR(dev, val + i * 4, 0); |
| 3983 | |
| 3984 | cp->rx_cons_ptr = |
| 3985 | &cp->bnx2x_def_status_blk->u_def_status_block.index_values[ |
| 3986 | HC_INDEX_DEF_U_ETH_ISCSI_RX_CQ_CONS]; |
| 3987 | } |
| 3988 | |
| 3989 | static void cnic_get_bnx2x_iscsi_info(struct cnic_dev *dev) |
| 3990 | { |
| 3991 | struct cnic_local *cp = dev->cnic_priv; |
| 3992 | u32 base, addr, val; |
| 3993 | int port = CNIC_PORT(cp); |
| 3994 | |
| 3995 | dev->max_iscsi_conn = 0; |
| 3996 | base = CNIC_RD(dev, MISC_REG_SHARED_MEM_ADDR); |
| 3997 | if (base < 0xa0000 || base >= 0xc0000) |
| 3998 | return; |
| 3999 | |
| 4000 | val = BNX2X_SHMEM_ADDR(base, |
| 4001 | dev_info.port_hw_config[port].iscsi_mac_upper); |
| 4002 | |
| 4003 | dev->mac_addr[0] = (u8) (val >> 8); |
| 4004 | dev->mac_addr[1] = (u8) val; |
| 4005 | |
| 4006 | val = BNX2X_SHMEM_ADDR(base, |
| 4007 | dev_info.port_hw_config[port].iscsi_mac_lower); |
| 4008 | |
| 4009 | dev->mac_addr[2] = (u8) (val >> 24); |
| 4010 | dev->mac_addr[3] = (u8) (val >> 16); |
| 4011 | dev->mac_addr[4] = (u8) (val >> 8); |
| 4012 | dev->mac_addr[5] = (u8) val; |
| 4013 | |
| 4014 | addr = BNX2X_SHMEM_ADDR(base, validity_map[port]); |
| 4015 | val = CNIC_RD(dev, addr); |
| 4016 | |
| 4017 | if (!(val & SHR_MEM_VALIDITY_LIC_NO_KEY_IN_EFFECT)) { |
| 4018 | u16 val16; |
| 4019 | |
| 4020 | addr = BNX2X_SHMEM_ADDR(base, |
| 4021 | drv_lic_key[port].max_iscsi_init_conn); |
| 4022 | val16 = CNIC_RD16(dev, addr); |
| 4023 | |
| 4024 | if (val16) |
| 4025 | val16 ^= 0x1e1e; |
| 4026 | dev->max_iscsi_conn = val16; |
| 4027 | } |
| 4028 | if (BNX2X_CHIP_IS_E1H(cp->chip_id)) { |
| 4029 | int func = CNIC_FUNC(cp); |
| 4030 | |
| 4031 | addr = BNX2X_SHMEM_ADDR(base, |
| 4032 | mf_cfg.func_mf_config[func].e1hov_tag); |
| 4033 | val = CNIC_RD(dev, addr); |
| 4034 | val &= FUNC_MF_CFG_E1HOV_TAG_MASK; |
| 4035 | if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) { |
| 4036 | addr = BNX2X_SHMEM_ADDR(base, |
| 4037 | mf_cfg.func_mf_config[func].config); |
| 4038 | val = CNIC_RD(dev, addr); |
| 4039 | val &= FUNC_MF_CFG_PROTOCOL_MASK; |
| 4040 | if (val != FUNC_MF_CFG_PROTOCOL_ISCSI) |
| 4041 | dev->max_iscsi_conn = 0; |
| 4042 | } |
| 4043 | } |
| 4044 | } |
| 4045 | |
| 4046 | static int cnic_start_bnx2x_hw(struct cnic_dev *dev) |
| 4047 | { |
| 4048 | struct cnic_local *cp = dev->cnic_priv; |
| 4049 | int func = CNIC_FUNC(cp), ret, i; |
| 4050 | int port = CNIC_PORT(cp); |
| 4051 | u16 eq_idx; |
| 4052 | u8 sb_id = cp->status_blk_num; |
| 4053 | |
| 4054 | ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ, |
| 4055 | BNX2X_ISCSI_START_CID); |
| 4056 | |
| 4057 | if (ret) |
| 4058 | return -ENOMEM; |
| 4059 | |
| 4060 | cp->kcq_io_addr = BAR_CSTRORM_INTMEM + |
| 4061 | CSTORM_ISCSI_EQ_PROD_OFFSET(func, 0); |
| 4062 | cp->kcq_prod_idx = 0; |
| 4063 | |
| 4064 | cnic_get_bnx2x_iscsi_info(dev); |
| 4065 | |
| 4066 | /* Only 1 EQ */ |
| 4067 | CNIC_WR16(dev, cp->kcq_io_addr, MAX_KCQ_IDX); |
| 4068 | CNIC_WR(dev, BAR_CSTRORM_INTMEM + |
| 4069 | CSTORM_ISCSI_EQ_CONS_OFFSET(func, 0), 0); |
| 4070 | CNIC_WR(dev, BAR_CSTRORM_INTMEM + |
| 4071 | CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0), |
| 4072 | cp->kcq_info.pg_map_arr[1] & 0xffffffff); |
| 4073 | CNIC_WR(dev, BAR_CSTRORM_INTMEM + |
| 4074 | CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0) + 4, |
| 4075 | (u64) cp->kcq_info.pg_map_arr[1] >> 32); |
| 4076 | CNIC_WR(dev, BAR_CSTRORM_INTMEM + |
| 4077 | CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0), |
| 4078 | cp->kcq_info.pg_map_arr[0] & 0xffffffff); |
| 4079 | CNIC_WR(dev, BAR_CSTRORM_INTMEM + |
| 4080 | CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0) + 4, |
| 4081 | (u64) cp->kcq_info.pg_map_arr[0] >> 32); |
| 4082 | CNIC_WR8(dev, BAR_CSTRORM_INTMEM + |
| 4083 | CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(func, 0), 1); |
| 4084 | CNIC_WR16(dev, BAR_CSTRORM_INTMEM + |
| 4085 | CSTORM_ISCSI_EQ_SB_NUM_OFFSET(func, 0), cp->status_blk_num); |
| 4086 | CNIC_WR8(dev, BAR_CSTRORM_INTMEM + |
| 4087 | CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(func, 0), |
| 4088 | HC_INDEX_C_ISCSI_EQ_CONS); |
| 4089 | |
| 4090 | for (i = 0; i < cp->conn_buf_info.num_pages; i++) { |
| 4091 | CNIC_WR(dev, BAR_TSTRORM_INTMEM + |
| 4092 | TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i), |
| 4093 | cp->conn_buf_info.pgtbl[2 * i]); |
| 4094 | CNIC_WR(dev, BAR_TSTRORM_INTMEM + |
| 4095 | TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i) + 4, |
| 4096 | cp->conn_buf_info.pgtbl[(2 * i) + 1]); |
| 4097 | } |
| 4098 | |
| 4099 | CNIC_WR(dev, BAR_USTRORM_INTMEM + |
| 4100 | USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func), |
| 4101 | cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff); |
| 4102 | CNIC_WR(dev, BAR_USTRORM_INTMEM + |
| 4103 | USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func) + 4, |
| 4104 | (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32); |
| 4105 | |
| 4106 | cnic_setup_bnx2x_context(dev); |
| 4107 | |
| 4108 | eq_idx = CNIC_RD16(dev, BAR_CSTRORM_INTMEM + |
| 4109 | CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) + |
| 4110 | offsetof(struct cstorm_status_block_c, |
| 4111 | index_values[HC_INDEX_C_ISCSI_EQ_CONS])); |
| 4112 | if (eq_idx != 0) { |
| 4113 | printk(KERN_ERR PFX "%s: EQ cons index %x != 0\n", |
| 4114 | dev->netdev->name, eq_idx); |
| 4115 | return -EBUSY; |
| 4116 | } |
| 4117 | ret = cnic_init_bnx2x_irq(dev); |
| 4118 | if (ret) |
| 4119 | return ret; |
| 4120 | |
| 4121 | cnic_init_bnx2x_tx_ring(dev); |
| 4122 | cnic_init_bnx2x_rx_ring(dev); |
| 4123 | |
| 4124 | return 0; |
| 4125 | } |
| 4126 | |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 4127 | static void cnic_init_rings(struct cnic_dev *dev) |
| 4128 | { |
| 4129 | if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) { |
| 4130 | cnic_init_bnx2_tx_ring(dev); |
| 4131 | cnic_init_bnx2_rx_ring(dev); |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 4132 | } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { |
| 4133 | struct cnic_local *cp = dev->cnic_priv; |
| 4134 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 4135 | u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp)); |
| 4136 | union l5cm_specific_data l5_data; |
| 4137 | struct ustorm_eth_rx_producers rx_prods = {0}; |
| 4138 | void __iomem *doorbell; |
| 4139 | int i; |
| 4140 | |
| 4141 | rx_prods.bd_prod = 0; |
| 4142 | rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT; |
| 4143 | barrier(); |
| 4144 | |
| 4145 | doorbell = ethdev->io_base2 + BAR_USTRORM_INTMEM + |
| 4146 | USTORM_RX_PRODS_OFFSET(CNIC_PORT(cp), cli); |
| 4147 | |
| 4148 | for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++) |
| 4149 | writel(((u32 *) &rx_prods)[i], doorbell + i * 4); |
| 4150 | |
| 4151 | cnic_init_bnx2x_tx_ring(dev); |
| 4152 | cnic_init_bnx2x_rx_ring(dev); |
| 4153 | |
| 4154 | l5_data.phy_address.lo = cli; |
| 4155 | l5_data.phy_address.hi = 0; |
| 4156 | cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP, |
| 4157 | BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data); |
| 4158 | cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 1); |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 4159 | } |
| 4160 | } |
| 4161 | |
| 4162 | static void cnic_shutdown_rings(struct cnic_dev *dev) |
| 4163 | { |
| 4164 | if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) { |
| 4165 | cnic_shutdown_bnx2_rx_ring(dev); |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 4166 | } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { |
| 4167 | struct cnic_local *cp = dev->cnic_priv; |
| 4168 | u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp)); |
| 4169 | |
| 4170 | cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 0); |
Michael Chan | 86b5360 | 2009-10-10 13:46:57 +0000 | [diff] [blame] | 4171 | } |
| 4172 | } |
| 4173 | |
Michael Chan | a3059b1 | 2009-08-14 15:49:44 +0000 | [diff] [blame] | 4174 | static int cnic_register_netdev(struct cnic_dev *dev) |
| 4175 | { |
| 4176 | struct cnic_local *cp = dev->cnic_priv; |
| 4177 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 4178 | int err; |
| 4179 | |
| 4180 | if (!ethdev) |
| 4181 | return -ENODEV; |
| 4182 | |
| 4183 | if (ethdev->drv_state & CNIC_DRV_STATE_REGD) |
| 4184 | return 0; |
| 4185 | |
| 4186 | err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev); |
| 4187 | if (err) |
| 4188 | printk(KERN_ERR PFX "%s: register_cnic failed\n", |
| 4189 | dev->netdev->name); |
| 4190 | |
| 4191 | return err; |
| 4192 | } |
| 4193 | |
| 4194 | static void cnic_unregister_netdev(struct cnic_dev *dev) |
| 4195 | { |
| 4196 | struct cnic_local *cp = dev->cnic_priv; |
| 4197 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 4198 | |
| 4199 | if (!ethdev) |
| 4200 | return; |
| 4201 | |
| 4202 | ethdev->drv_unregister_cnic(dev->netdev); |
| 4203 | } |
| 4204 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4205 | static int cnic_start_hw(struct cnic_dev *dev) |
| 4206 | { |
| 4207 | struct cnic_local *cp = dev->cnic_priv; |
| 4208 | struct cnic_eth_dev *ethdev = cp->ethdev; |
| 4209 | int err; |
| 4210 | |
| 4211 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) |
| 4212 | return -EALREADY; |
| 4213 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4214 | dev->regview = ethdev->io_base; |
| 4215 | cp->chip_id = ethdev->chip_id; |
| 4216 | pci_dev_get(dev->pcidev); |
| 4217 | cp->func = PCI_FUNC(dev->pcidev->devfn); |
| 4218 | cp->status_blk = ethdev->irq_arr[0].status_blk; |
| 4219 | cp->status_blk_num = ethdev->irq_arr[0].status_blk_num; |
| 4220 | |
| 4221 | err = cp->alloc_resc(dev); |
| 4222 | if (err) { |
| 4223 | printk(KERN_ERR PFX "%s: allocate resource failure\n", |
| 4224 | dev->netdev->name); |
| 4225 | goto err1; |
| 4226 | } |
| 4227 | |
| 4228 | err = cp->start_hw(dev); |
| 4229 | if (err) |
| 4230 | goto err1; |
| 4231 | |
| 4232 | err = cnic_cm_open(dev); |
| 4233 | if (err) |
| 4234 | goto err1; |
| 4235 | |
| 4236 | set_bit(CNIC_F_CNIC_UP, &dev->flags); |
| 4237 | |
| 4238 | cp->enable_int(dev); |
| 4239 | |
| 4240 | return 0; |
| 4241 | |
| 4242 | err1: |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4243 | cp->free_resc(dev); |
| 4244 | pci_dev_put(dev->pcidev); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4245 | return err; |
| 4246 | } |
| 4247 | |
| 4248 | static void cnic_stop_bnx2_hw(struct cnic_dev *dev) |
| 4249 | { |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4250 | cnic_disable_bnx2_int_sync(dev); |
| 4251 | |
| 4252 | cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0); |
| 4253 | cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0); |
| 4254 | |
| 4255 | cnic_init_context(dev, KWQ_CID); |
| 4256 | cnic_init_context(dev, KCQ_CID); |
| 4257 | |
| 4258 | cnic_setup_5709_context(dev, 0); |
| 4259 | cnic_free_irq(dev); |
| 4260 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4261 | cnic_free_resc(dev); |
| 4262 | } |
| 4263 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 4264 | |
| 4265 | static void cnic_stop_bnx2x_hw(struct cnic_dev *dev) |
| 4266 | { |
| 4267 | struct cnic_local *cp = dev->cnic_priv; |
| 4268 | u8 sb_id = cp->status_blk_num; |
| 4269 | int port = CNIC_PORT(cp); |
| 4270 | |
| 4271 | cnic_free_irq(dev); |
| 4272 | CNIC_WR16(dev, BAR_CSTRORM_INTMEM + |
| 4273 | CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) + |
| 4274 | offsetof(struct cstorm_status_block_c, |
| 4275 | index_values[HC_INDEX_C_ISCSI_EQ_CONS]), |
| 4276 | 0); |
| 4277 | cnic_free_resc(dev); |
| 4278 | } |
| 4279 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4280 | static void cnic_stop_hw(struct cnic_dev *dev) |
| 4281 | { |
| 4282 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) { |
| 4283 | struct cnic_local *cp = dev->cnic_priv; |
| 4284 | |
| 4285 | clear_bit(CNIC_F_CNIC_UP, &dev->flags); |
| 4286 | rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL); |
| 4287 | synchronize_rcu(); |
| 4288 | cnic_cm_shutdown(dev); |
| 4289 | cp->stop_hw(dev); |
| 4290 | pci_dev_put(dev->pcidev); |
| 4291 | } |
| 4292 | } |
| 4293 | |
| 4294 | static void cnic_free_dev(struct cnic_dev *dev) |
| 4295 | { |
| 4296 | int i = 0; |
| 4297 | |
| 4298 | while ((atomic_read(&dev->ref_count) != 0) && i < 10) { |
| 4299 | msleep(100); |
| 4300 | i++; |
| 4301 | } |
| 4302 | if (atomic_read(&dev->ref_count) != 0) |
| 4303 | printk(KERN_ERR PFX "%s: Failed waiting for ref count to go" |
| 4304 | " to zero.\n", dev->netdev->name); |
| 4305 | |
| 4306 | printk(KERN_INFO PFX "Removed CNIC device: %s\n", dev->netdev->name); |
| 4307 | dev_put(dev->netdev); |
| 4308 | kfree(dev); |
| 4309 | } |
| 4310 | |
| 4311 | static struct cnic_dev *cnic_alloc_dev(struct net_device *dev, |
| 4312 | struct pci_dev *pdev) |
| 4313 | { |
| 4314 | struct cnic_dev *cdev; |
| 4315 | struct cnic_local *cp; |
| 4316 | int alloc_size; |
| 4317 | |
| 4318 | alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local); |
| 4319 | |
| 4320 | cdev = kzalloc(alloc_size , GFP_KERNEL); |
| 4321 | if (cdev == NULL) { |
| 4322 | printk(KERN_ERR PFX "%s: allocate dev struct failure\n", |
| 4323 | dev->name); |
| 4324 | return NULL; |
| 4325 | } |
| 4326 | |
| 4327 | cdev->netdev = dev; |
| 4328 | cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev); |
| 4329 | cdev->register_device = cnic_register_device; |
| 4330 | cdev->unregister_device = cnic_unregister_device; |
| 4331 | cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv; |
| 4332 | |
| 4333 | cp = cdev->cnic_priv; |
| 4334 | cp->dev = cdev; |
| 4335 | cp->uio_dev = -1; |
| 4336 | cp->l2_single_buf_size = 0x400; |
| 4337 | cp->l2_rx_ring_size = 3; |
| 4338 | |
| 4339 | spin_lock_init(&cp->cnic_ulp_lock); |
| 4340 | |
| 4341 | printk(KERN_INFO PFX "Added CNIC device: %s\n", dev->name); |
| 4342 | |
| 4343 | return cdev; |
| 4344 | } |
| 4345 | |
| 4346 | static struct cnic_dev *init_bnx2_cnic(struct net_device *dev) |
| 4347 | { |
| 4348 | struct pci_dev *pdev; |
| 4349 | struct cnic_dev *cdev; |
| 4350 | struct cnic_local *cp; |
| 4351 | struct cnic_eth_dev *ethdev = NULL; |
Michael Chan | e2ee361 | 2009-06-13 17:43:02 -0700 | [diff] [blame] | 4352 | struct cnic_eth_dev *(*probe)(struct net_device *) = NULL; |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4353 | |
Michael Chan | e2ee361 | 2009-06-13 17:43:02 -0700 | [diff] [blame] | 4354 | probe = symbol_get(bnx2_cnic_probe); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4355 | if (probe) { |
| 4356 | ethdev = (*probe)(dev); |
Michael Chan | 64c6460 | 2009-08-14 15:49:43 +0000 | [diff] [blame] | 4357 | symbol_put(bnx2_cnic_probe); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4358 | } |
| 4359 | if (!ethdev) |
| 4360 | return NULL; |
| 4361 | |
| 4362 | pdev = ethdev->pdev; |
| 4363 | if (!pdev) |
| 4364 | return NULL; |
| 4365 | |
| 4366 | dev_hold(dev); |
| 4367 | pci_dev_get(pdev); |
| 4368 | if (pdev->device == PCI_DEVICE_ID_NX2_5709 || |
| 4369 | pdev->device == PCI_DEVICE_ID_NX2_5709S) { |
| 4370 | u8 rev; |
| 4371 | |
| 4372 | pci_read_config_byte(pdev, PCI_REVISION_ID, &rev); |
| 4373 | if (rev < 0x10) { |
| 4374 | pci_dev_put(pdev); |
| 4375 | goto cnic_err; |
| 4376 | } |
| 4377 | } |
| 4378 | pci_dev_put(pdev); |
| 4379 | |
| 4380 | cdev = cnic_alloc_dev(dev, pdev); |
| 4381 | if (cdev == NULL) |
| 4382 | goto cnic_err; |
| 4383 | |
| 4384 | set_bit(CNIC_F_BNX2_CLASS, &cdev->flags); |
| 4385 | cdev->submit_kwqes = cnic_submit_bnx2_kwqes; |
| 4386 | |
| 4387 | cp = cdev->cnic_priv; |
| 4388 | cp->ethdev = ethdev; |
| 4389 | cdev->pcidev = pdev; |
| 4390 | |
| 4391 | cp->cnic_ops = &cnic_bnx2_ops; |
| 4392 | cp->start_hw = cnic_start_bnx2_hw; |
| 4393 | cp->stop_hw = cnic_stop_bnx2_hw; |
| 4394 | cp->setup_pgtbl = cnic_setup_page_tbl; |
| 4395 | cp->alloc_resc = cnic_alloc_bnx2_resc; |
| 4396 | cp->free_resc = cnic_free_resc; |
| 4397 | cp->start_cm = cnic_cm_init_bnx2_hw; |
| 4398 | cp->stop_cm = cnic_cm_stop_bnx2_hw; |
| 4399 | cp->enable_int = cnic_enable_bnx2_int; |
| 4400 | cp->disable_int_sync = cnic_disable_bnx2_int_sync; |
| 4401 | cp->close_conn = cnic_close_bnx2_conn; |
| 4402 | cp->next_idx = cnic_bnx2_next_idx; |
| 4403 | cp->hw_idx = cnic_bnx2_hw_idx; |
| 4404 | return cdev; |
| 4405 | |
| 4406 | cnic_err: |
| 4407 | dev_put(dev); |
| 4408 | return NULL; |
| 4409 | } |
| 4410 | |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 4411 | static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev) |
| 4412 | { |
| 4413 | struct pci_dev *pdev; |
| 4414 | struct cnic_dev *cdev; |
| 4415 | struct cnic_local *cp; |
| 4416 | struct cnic_eth_dev *ethdev = NULL; |
| 4417 | struct cnic_eth_dev *(*probe)(struct net_device *) = NULL; |
| 4418 | |
| 4419 | probe = symbol_get(bnx2x_cnic_probe); |
| 4420 | if (probe) { |
| 4421 | ethdev = (*probe)(dev); |
| 4422 | symbol_put(bnx2x_cnic_probe); |
| 4423 | } |
| 4424 | if (!ethdev) |
| 4425 | return NULL; |
| 4426 | |
| 4427 | pdev = ethdev->pdev; |
| 4428 | if (!pdev) |
| 4429 | return NULL; |
| 4430 | |
| 4431 | dev_hold(dev); |
| 4432 | cdev = cnic_alloc_dev(dev, pdev); |
| 4433 | if (cdev == NULL) { |
| 4434 | dev_put(dev); |
| 4435 | return NULL; |
| 4436 | } |
| 4437 | |
| 4438 | set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags); |
| 4439 | cdev->submit_kwqes = cnic_submit_bnx2x_kwqes; |
| 4440 | |
| 4441 | cp = cdev->cnic_priv; |
| 4442 | cp->ethdev = ethdev; |
| 4443 | cdev->pcidev = pdev; |
| 4444 | |
| 4445 | cp->cnic_ops = &cnic_bnx2x_ops; |
| 4446 | cp->start_hw = cnic_start_bnx2x_hw; |
| 4447 | cp->stop_hw = cnic_stop_bnx2x_hw; |
| 4448 | cp->setup_pgtbl = cnic_setup_page_tbl_le; |
| 4449 | cp->alloc_resc = cnic_alloc_bnx2x_resc; |
| 4450 | cp->free_resc = cnic_free_resc; |
| 4451 | cp->start_cm = cnic_cm_init_bnx2x_hw; |
| 4452 | cp->stop_cm = cnic_cm_stop_bnx2x_hw; |
| 4453 | cp->enable_int = cnic_enable_bnx2x_int; |
| 4454 | cp->disable_int_sync = cnic_disable_bnx2x_int_sync; |
| 4455 | cp->ack_int = cnic_ack_bnx2x_msix; |
| 4456 | cp->close_conn = cnic_close_bnx2x_conn; |
| 4457 | cp->next_idx = cnic_bnx2x_next_idx; |
| 4458 | cp->hw_idx = cnic_bnx2x_hw_idx; |
| 4459 | return cdev; |
| 4460 | } |
| 4461 | |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4462 | static struct cnic_dev *is_cnic_dev(struct net_device *dev) |
| 4463 | { |
| 4464 | struct ethtool_drvinfo drvinfo; |
| 4465 | struct cnic_dev *cdev = NULL; |
| 4466 | |
| 4467 | if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) { |
| 4468 | memset(&drvinfo, 0, sizeof(drvinfo)); |
| 4469 | dev->ethtool_ops->get_drvinfo(dev, &drvinfo); |
| 4470 | |
| 4471 | if (!strcmp(drvinfo.driver, "bnx2")) |
| 4472 | cdev = init_bnx2_cnic(dev); |
Michael Chan | 71034ba | 2009-10-10 13:46:59 +0000 | [diff] [blame] | 4473 | if (!strcmp(drvinfo.driver, "bnx2x")) |
| 4474 | cdev = init_bnx2x_cnic(dev); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4475 | if (cdev) { |
| 4476 | write_lock(&cnic_dev_lock); |
| 4477 | list_add(&cdev->list, &cnic_dev_list); |
| 4478 | write_unlock(&cnic_dev_lock); |
| 4479 | } |
| 4480 | } |
| 4481 | return cdev; |
| 4482 | } |
| 4483 | |
| 4484 | /** |
| 4485 | * netdev event handler |
| 4486 | */ |
| 4487 | static int cnic_netdev_event(struct notifier_block *this, unsigned long event, |
| 4488 | void *ptr) |
| 4489 | { |
| 4490 | struct net_device *netdev = ptr; |
| 4491 | struct cnic_dev *dev; |
| 4492 | int if_type; |
| 4493 | int new_dev = 0; |
| 4494 | |
| 4495 | dev = cnic_from_netdev(netdev); |
| 4496 | |
| 4497 | if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) { |
| 4498 | /* Check for the hot-plug device */ |
| 4499 | dev = is_cnic_dev(netdev); |
| 4500 | if (dev) { |
| 4501 | new_dev = 1; |
| 4502 | cnic_hold(dev); |
| 4503 | } |
| 4504 | } |
| 4505 | if (dev) { |
| 4506 | struct cnic_local *cp = dev->cnic_priv; |
| 4507 | |
| 4508 | if (new_dev) |
| 4509 | cnic_ulp_init(dev); |
| 4510 | else if (event == NETDEV_UNREGISTER) |
| 4511 | cnic_ulp_exit(dev); |
Michael Chan | 6053bbf | 2009-10-02 11:03:28 -0700 | [diff] [blame] | 4512 | |
| 4513 | if (event == NETDEV_UP) { |
Michael Chan | a3059b1 | 2009-08-14 15:49:44 +0000 | [diff] [blame] | 4514 | if (cnic_register_netdev(dev) != 0) { |
| 4515 | cnic_put(dev); |
| 4516 | goto done; |
| 4517 | } |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4518 | if (!cnic_start_hw(dev)) |
| 4519 | cnic_ulp_start(dev); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4520 | } |
| 4521 | |
| 4522 | rcu_read_lock(); |
| 4523 | for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { |
| 4524 | struct cnic_ulp_ops *ulp_ops; |
| 4525 | void *ctx; |
| 4526 | |
| 4527 | ulp_ops = rcu_dereference(cp->ulp_ops[if_type]); |
| 4528 | if (!ulp_ops || !ulp_ops->indicate_netevent) |
| 4529 | continue; |
| 4530 | |
| 4531 | ctx = cp->ulp_handle[if_type]; |
| 4532 | |
| 4533 | ulp_ops->indicate_netevent(ctx, event); |
| 4534 | } |
| 4535 | rcu_read_unlock(); |
| 4536 | |
| 4537 | if (event == NETDEV_GOING_DOWN) { |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4538 | cnic_ulp_stop(dev); |
| 4539 | cnic_stop_hw(dev); |
Michael Chan | a3059b1 | 2009-08-14 15:49:44 +0000 | [diff] [blame] | 4540 | cnic_unregister_netdev(dev); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4541 | } else if (event == NETDEV_UNREGISTER) { |
| 4542 | write_lock(&cnic_dev_lock); |
| 4543 | list_del_init(&dev->list); |
| 4544 | write_unlock(&cnic_dev_lock); |
| 4545 | |
| 4546 | cnic_put(dev); |
| 4547 | cnic_free_dev(dev); |
| 4548 | goto done; |
| 4549 | } |
| 4550 | cnic_put(dev); |
| 4551 | } |
| 4552 | done: |
| 4553 | return NOTIFY_DONE; |
| 4554 | } |
| 4555 | |
| 4556 | static struct notifier_block cnic_netdev_notifier = { |
| 4557 | .notifier_call = cnic_netdev_event |
| 4558 | }; |
| 4559 | |
| 4560 | static void cnic_release(void) |
| 4561 | { |
| 4562 | struct cnic_dev *dev; |
| 4563 | |
| 4564 | while (!list_empty(&cnic_dev_list)) { |
| 4565 | dev = list_entry(cnic_dev_list.next, struct cnic_dev, list); |
| 4566 | if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) { |
| 4567 | cnic_ulp_stop(dev); |
| 4568 | cnic_stop_hw(dev); |
| 4569 | } |
| 4570 | |
| 4571 | cnic_ulp_exit(dev); |
Michael Chan | a3059b1 | 2009-08-14 15:49:44 +0000 | [diff] [blame] | 4572 | cnic_unregister_netdev(dev); |
Michael Chan | a463696 | 2009-06-08 18:14:43 -0700 | [diff] [blame] | 4573 | list_del_init(&dev->list); |
| 4574 | cnic_free_dev(dev); |
| 4575 | } |
| 4576 | } |
| 4577 | |
| 4578 | static int __init cnic_init(void) |
| 4579 | { |
| 4580 | int rc = 0; |
| 4581 | |
| 4582 | printk(KERN_INFO "%s", version); |
| 4583 | |
| 4584 | rc = register_netdevice_notifier(&cnic_netdev_notifier); |
| 4585 | if (rc) { |
| 4586 | cnic_release(); |
| 4587 | return rc; |
| 4588 | } |
| 4589 | |
| 4590 | return 0; |
| 4591 | } |
| 4592 | |
| 4593 | static void __exit cnic_exit(void) |
| 4594 | { |
| 4595 | unregister_netdevice_notifier(&cnic_netdev_notifier); |
| 4596 | cnic_release(); |
| 4597 | return; |
| 4598 | } |
| 4599 | |
| 4600 | module_init(cnic_init); |
| 4601 | module_exit(cnic_exit); |