2 * Copyright (c) 2006 - 2011 Intel Corporation. All rights reserved.
3 * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
37 #include <linux/netdevice.h>
38 #include <linux/inetdevice.h>
39 #include <linux/spinlock.h>
40 #include <linux/kernel.h>
41 #include <linux/delay.h>
42 #include <linux/pci.h>
43 #include <linux/dma-mapping.h>
44 #include <linux/workqueue.h>
45 #include <linux/slab.h>
47 #include <linux/crc32c.h>
49 #include <rdma/ib_smi.h>
50 #include <rdma/ib_verbs.h>
51 #include <rdma/ib_pack.h>
52 #include <rdma/rdma_cm.h>
53 #include <rdma/iw_cm.h>
54 #include <rdma/rdma_netlink.h>
55 #include <rdma/iw_portmap.h>
57 #define NES_SEND_FIRST_WRITE
59 #define QUEUE_DISCONNECTS
61 #define DRV_NAME "iw_nes"
62 #define DRV_VERSION "1.5.0.1"
63 #define PFX DRV_NAME ": "
66 * NetEffect PCI vendor id and NE010 PCI device id.
68 #ifndef PCI_VENDOR_ID_NETEFFECT /* not in pci.ids yet */
69 #define PCI_VENDOR_ID_NETEFFECT 0x1678
70 #define PCI_DEVICE_ID_NETEFFECT_NE020 0x0100
71 #define PCI_DEVICE_ID_NETEFFECT_NE020_KR 0x0110
80 #define RX_BUF_SIZE (1536 + 8)
81 #define NES_REG0_SIZE (4 * 1024)
82 #define NES_TX_TIMEOUT (6*HZ)
83 #define NES_FIRST_QPN 64
84 #define NES_SW_CONTEXT_ALIGN 1024
86 #define NES_NIC_MAX_NICS 16
87 #define NES_MAX_ARP_TABLE_SIZE 4096
89 #define NES_NIC_CEQ_SIZE 8
90 /* NICs will be on a separate CQ */
91 #define NES_CCEQ_SIZE ((nesadapter->max_cq / nesadapter->port_count) - 32)
93 #define NES_MAX_PORT_COUNT 4
95 #define MAX_DPC_ITERATIONS 128
97 #define NES_DRV_OPT_ENABLE_MPA_VER_0 0x00000001
98 #define NES_DRV_OPT_DISABLE_MPA_CRC 0x00000002
99 #define NES_DRV_OPT_DISABLE_FIRST_WRITE 0x00000004
100 #define NES_DRV_OPT_DISABLE_INTF 0x00000008
101 #define NES_DRV_OPT_ENABLE_MSI 0x00000010
102 #define NES_DRV_OPT_DUAL_LOGICAL_PORT 0x00000020
103 #define NES_DRV_OPT_SUPRESS_OPTION_BC 0x00000040
104 #define NES_DRV_OPT_NO_INLINE_DATA 0x00000080
105 #define NES_DRV_OPT_DISABLE_INT_MOD 0x00000100
106 #define NES_DRV_OPT_DISABLE_VIRT_WQ 0x00000200
107 #define NES_DRV_OPT_ENABLE_PAU 0x00000400
109 #define NES_AEQ_EVENT_TIMEOUT 2500
110 #define NES_DISCONNECT_EVENT_TIMEOUT 2000
113 /* must match userspace */
114 #define NES_DBG_HW 0x00000001
115 #define NES_DBG_INIT 0x00000002
116 #define NES_DBG_ISR 0x00000004
117 #define NES_DBG_PHY 0x00000008
118 #define NES_DBG_NETDEV 0x00000010
119 #define NES_DBG_CM 0x00000020
120 #define NES_DBG_CM1 0x00000040
121 #define NES_DBG_NIC_RX 0x00000080
122 #define NES_DBG_NIC_TX 0x00000100
123 #define NES_DBG_CQP 0x00000200
124 #define NES_DBG_MMAP 0x00000400
125 #define NES_DBG_MR 0x00000800
126 #define NES_DBG_PD 0x00001000
127 #define NES_DBG_CQ 0x00002000
128 #define NES_DBG_QP 0x00004000
129 #define NES_DBG_MOD_QP 0x00008000
130 #define NES_DBG_AEQ 0x00010000
131 #define NES_DBG_IW_RX 0x00020000
132 #define NES_DBG_IW_TX 0x00040000
133 #define NES_DBG_SHUTDOWN 0x00080000
134 #define NES_DBG_PAU 0x00100000
135 #define NES_DBG_NLMSG 0x00200000
136 #define NES_DBG_RSVD1 0x10000000
137 #define NES_DBG_RSVD2 0x20000000
138 #define NES_DBG_RSVD3 0x40000000
139 #define NES_DBG_RSVD4 0x80000000
140 #define NES_DBG_ALL 0xffffffff
142 #ifdef CONFIG_INFINIBAND_NES_DEBUG
143 #define nes_debug(level, fmt, args...) \
145 if (level & nes_debug_level) \
146 printk(KERN_ERR PFX "%s[%u]: " fmt, __func__, __LINE__, ##args); \
149 #define assert(expr) \
152 printk(KERN_ERR PFX "Assertion failed! %s, %s, %s, line %d\n", \
153 #expr, __FILE__, __func__, __LINE__); \
157 #define NES_EVENT_TIMEOUT 1200000
159 #define nes_debug(level, fmt, args...)
160 #define assert(expr) do {} while (0)
162 #define NES_EVENT_TIMEOUT 100000
166 #include "nes_verbs.h"
167 #include "nes_context.h"
168 #include "nes_user.h"
173 #define max_frame_len (max_mtu+ETH_HLEN)
174 extern int interrupt_mod_interval
;
175 extern int nes_if_count
;
176 extern int mpa_version
;
177 extern int disable_mpa_crc
;
178 extern unsigned int nes_drv_opt
;
179 extern unsigned int nes_debug_level
;
180 extern unsigned int wqm_quanta
;
181 extern struct list_head nes_adapter_list
;
183 extern atomic_t cm_connects
;
184 extern atomic_t cm_accepts
;
185 extern atomic_t cm_disconnects
;
186 extern atomic_t cm_closes
;
187 extern atomic_t cm_connecteds
;
188 extern atomic_t cm_connect_reqs
;
189 extern atomic_t cm_rejects
;
190 extern atomic_t mod_qp_timouts
;
191 extern atomic_t qps_created
;
192 extern atomic_t qps_destroyed
;
193 extern atomic_t sw_qps_destroyed
;
194 extern u32 mh_detected
;
195 extern u32 mh_pauses_sent
;
196 extern u32 cm_packets_sent
;
197 extern u32 cm_packets_bounced
;
198 extern u32 cm_packets_created
;
199 extern u32 cm_packets_received
;
200 extern u32 cm_packets_dropped
;
201 extern u32 cm_packets_retrans
;
202 extern atomic_t cm_listens_created
;
203 extern atomic_t cm_listens_destroyed
;
204 extern u32 cm_backlog_drops
;
205 extern atomic_t cm_loopbacks
;
206 extern atomic_t cm_nodes_created
;
207 extern atomic_t cm_nodes_destroyed
;
208 extern atomic_t cm_accel_dropped_pkts
;
209 extern atomic_t cm_resets_recvd
;
210 extern atomic_t pau_qps_created
;
211 extern atomic_t pau_qps_destroyed
;
213 extern u32 int_mod_timer_init
;
214 extern u32 int_mod_cq_depth_256
;
215 extern u32 int_mod_cq_depth_128
;
216 extern u32 int_mod_cq_depth_32
;
217 extern u32 int_mod_cq_depth_24
;
218 extern u32 int_mod_cq_depth_16
;
219 extern u32 int_mod_cq_depth_4
;
220 extern u32 int_mod_cq_depth_1
;
223 struct nes_adapter
*nesadapter
;
225 void __iomem
*index_reg
;
226 struct pci_dev
*pcidev
;
227 struct net_device
*netdev
[NES_NIC_MAX_NICS
];
228 u64 link_status_interrupts
;
229 struct tasklet_struct dpc_tasklet
;
230 spinlock_t indexed_regs_lock
;
231 unsigned long csr_start
;
232 unsigned long doorbell_region
;
233 unsigned long doorbell_start
;
234 unsigned long mac_tx_errors
;
235 unsigned long mac_pause_frames_sent
;
236 unsigned long mac_pause_frames_received
;
237 unsigned long mac_rx_errors
;
238 unsigned long mac_rx_crc_errors
;
239 unsigned long mac_rx_symbol_err_frames
;
240 unsigned long mac_rx_jabber_frames
;
241 unsigned long mac_rx_oversized_frames
;
242 unsigned long mac_rx_short_frames
;
243 unsigned long port_rx_discards
;
244 unsigned long port_tx_discards
;
245 unsigned int mac_index
;
246 unsigned int nes_stack_start
;
248 /* Control Structures */
250 dma_addr_t cqp_pbase
;
254 struct nes_hw_cqp cqp
;
255 struct nes_hw_cq ccq
;
256 struct list_head cqp_avail_reqs
;
257 struct list_head cqp_pending_reqs
;
258 struct nes_cqp_request
*nes_cqp_requests
;
263 u32 timer_only_int_count
;
265 u32 last_mac_tx_pauses
;
266 u32 last_used_chunks_tx
;
267 struct list_head list
;
269 u16 base_doorbell_index
;
276 u8 disable_rx_flow_control
;
277 u8 disable_tx_flow_control
;
279 struct delayed_work work
;
283 /* Receive skb private area - must fit in skb->cb area */
289 struct nes_qp
*nesqp
;
292 static inline __le32
get_crc_value(struct nes_v4_quad
*nes_quad
)
295 crc_value
= crc32c(~0, (void *)nes_quad
, sizeof (struct nes_v4_quad
));
298 * With commit ef19454b ("[LIB] crc32c: Keep intermediate crc
299 * state in cpu order"), behavior of crc32c changes on
300 * big-endian platforms. Our algorithm expects the previous
301 * behavior; otherwise we have RDMA connection establishment
302 * issue on big-endian.
304 return cpu_to_le32(crc_value
);
308 set_wqe_64bit_value(__le32
*wqe_words
, u32 index
, u64 value
)
310 wqe_words
[index
] = cpu_to_le32((u32
) value
);
311 wqe_words
[index
+ 1] = cpu_to_le32(upper_32_bits(value
));
315 set_wqe_32bit_value(__le32
*wqe_words
, u32 index
, u32 value
)
317 wqe_words
[index
] = cpu_to_le32(value
);
321 nes_fill_init_cqp_wqe(struct nes_hw_cqp_wqe
*cqp_wqe
, struct nes_device
*nesdev
)
323 cqp_wqe
->wqe_words
[NES_CQP_WQE_COMP_CTX_LOW_IDX
] = 0;
324 cqp_wqe
->wqe_words
[NES_CQP_WQE_COMP_CTX_HIGH_IDX
] = 0;
325 cqp_wqe
->wqe_words
[NES_CQP_WQE_COMP_SCRATCH_LOW_IDX
] = 0;
326 cqp_wqe
->wqe_words
[NES_CQP_WQE_COMP_SCRATCH_HIGH_IDX
] = 0;
327 cqp_wqe
->wqe_words
[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX
] = 0;
328 cqp_wqe
->wqe_words
[NES_CQP_STAG_WQE_PBL_LEN_IDX
] = 0;
329 cqp_wqe
->wqe_words
[NES_CQP_STAG_WQE_LEN_LOW_IDX
] = 0;
330 cqp_wqe
->wqe_words
[NES_CQP_STAG_WQE_PA_LOW_IDX
] = 0;
331 cqp_wqe
->wqe_words
[NES_CQP_STAG_WQE_PA_HIGH_IDX
] = 0;
335 nes_fill_init_qp_wqe(struct nes_hw_qp_wqe
*wqe
, struct nes_qp
*nesqp
, u32 head
)
338 value
= ((u32
)((unsigned long) nesqp
)) | head
;
339 set_wqe_32bit_value(wqe
->wqe_words
, NES_IWARP_SQ_WQE_COMP_CTX_HIGH_IDX
,
340 (u32
)(upper_32_bits((unsigned long)(nesqp
))));
341 set_wqe_32bit_value(wqe
->wqe_words
, NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX
, value
);
344 /* Read from memory-mapped device */
345 static inline u32
nes_read_indexed(struct nes_device
*nesdev
, u32 reg_index
)
348 void __iomem
*addr
= nesdev
->index_reg
;
351 spin_lock_irqsave(&nesdev
->indexed_regs_lock
, flags
);
353 writel(reg_index
, addr
);
354 value
= readl((void __iomem
*)addr
+ 4);
356 spin_unlock_irqrestore(&nesdev
->indexed_regs_lock
, flags
);
360 static inline u32
nes_read32(const void __iomem
*addr
)
365 static inline u16
nes_read16(const void __iomem
*addr
)
370 static inline u8
nes_read8(const void __iomem
*addr
)
375 /* Write to memory-mapped device */
376 static inline void nes_write_indexed(struct nes_device
*nesdev
, u32 reg_index
, u32 val
)
379 void __iomem
*addr
= nesdev
->index_reg
;
381 spin_lock_irqsave(&nesdev
->indexed_regs_lock
, flags
);
383 writel(reg_index
, addr
);
384 writel(val
, (void __iomem
*)addr
+ 4);
386 spin_unlock_irqrestore(&nesdev
->indexed_regs_lock
, flags
);
389 static inline void nes_write32(void __iomem
*addr
, u32 val
)
394 static inline void nes_write16(void __iomem
*addr
, u16 val
)
399 static inline void nes_write8(void __iomem
*addr
, u8 val
)
406 NES_RESOURCE_FAST_MR
,
407 NES_RESOURCE_PHYS_MR
,
408 NES_RESOURCE_USER_MR
,
415 static inline int nes_alloc_resource(struct nes_adapter
*nesadapter
,
416 unsigned long *resource_array
, u32 max_resources
,
417 u32
*req_resource_num
, u32
*next
, enum nes_resource resource_type
)
422 spin_lock_irqsave(&nesadapter
->resource_lock
, flags
);
424 resource_num
= find_next_zero_bit(resource_array
, max_resources
, *next
);
425 if (resource_num
>= max_resources
) {
426 resource_num
= find_first_zero_bit(resource_array
, max_resources
);
427 if (resource_num
>= max_resources
) {
428 printk(KERN_ERR PFX
"%s: No available resources [type=%u].\n", __func__
, resource_type
);
429 spin_unlock_irqrestore(&nesadapter
->resource_lock
, flags
);
433 set_bit(resource_num
, resource_array
);
434 *next
= resource_num
+1;
435 if (*next
== max_resources
) {
438 spin_unlock_irqrestore(&nesadapter
->resource_lock
, flags
);
439 *req_resource_num
= resource_num
;
444 static inline int nes_is_resource_allocated(struct nes_adapter
*nesadapter
,
445 unsigned long *resource_array
, u32 resource_num
)
450 spin_lock_irqsave(&nesadapter
->resource_lock
, flags
);
452 bit_is_set
= test_bit(resource_num
, resource_array
);
453 nes_debug(NES_DBG_HW
, "resource_num %u is%s allocated.\n",
454 resource_num
, (bit_is_set
? "": " not"));
455 spin_unlock_irqrestore(&nesadapter
->resource_lock
, flags
);
460 static inline void nes_free_resource(struct nes_adapter
*nesadapter
,
461 unsigned long *resource_array
, u32 resource_num
)
465 spin_lock_irqsave(&nesadapter
->resource_lock
, flags
);
466 clear_bit(resource_num
, resource_array
);
467 spin_unlock_irqrestore(&nesadapter
->resource_lock
, flags
);
470 static inline struct nes_vnic
*to_nesvnic(struct ib_device
*ibdev
)
472 return container_of(ibdev
, struct nes_ib_device
, ibdev
)->nesvnic
;
475 static inline struct nes_pd
*to_nespd(struct ib_pd
*ibpd
)
477 return container_of(ibpd
, struct nes_pd
, ibpd
);
480 static inline struct nes_ucontext
*to_nesucontext(struct ib_ucontext
*ibucontext
)
482 return container_of(ibucontext
, struct nes_ucontext
, ibucontext
);
485 static inline struct nes_mr
*to_nesmr(struct ib_mr
*ibmr
)
487 return container_of(ibmr
, struct nes_mr
, ibmr
);
490 static inline struct nes_mr
*to_nesmr_from_ibfmr(struct ib_fmr
*ibfmr
)
492 return container_of(ibfmr
, struct nes_mr
, ibfmr
);
495 static inline struct nes_mr
*to_nesmw(struct ib_mw
*ibmw
)
497 return container_of(ibmw
, struct nes_mr
, ibmw
);
500 static inline struct nes_fmr
*to_nesfmr(struct nes_mr
*nesmr
)
502 return container_of(nesmr
, struct nes_fmr
, nesmr
);
505 static inline struct nes_cq
*to_nescq(struct ib_cq
*ibcq
)
507 return container_of(ibcq
, struct nes_cq
, ibcq
);
510 static inline struct nes_qp
*to_nesqp(struct ib_qp
*ibqp
)
512 return container_of(ibqp
, struct nes_qp
, ibqp
);
518 void nes_add_ref(struct ib_qp
*);
519 void nes_rem_ref(struct ib_qp
*);
520 struct ib_qp
*nes_get_qp(struct ib_device
*, int);
524 struct nes_adapter
*nes_init_adapter(struct nes_device
*, u8
);
525 void nes_nic_init_timer_defaults(struct nes_device
*, u8
);
526 void nes_destroy_adapter(struct nes_adapter
*);
527 int nes_init_cqp(struct nes_device
*);
528 int nes_init_phy(struct nes_device
*);
529 int nes_init_nic_qp(struct nes_device
*, struct net_device
*);
530 void nes_destroy_nic_qp(struct nes_vnic
*);
531 int nes_napi_isr(struct nes_device
*);
532 void nes_dpc(unsigned long);
533 void nes_nic_ce_handler(struct nes_device
*, struct nes_hw_nic_cq
*);
534 void nes_iwarp_ce_handler(struct nes_device
*, struct nes_hw_cq
*);
535 int nes_destroy_cqp(struct nes_device
*);
536 int nes_nic_cm_xmit(struct sk_buff
*, struct net_device
*);
537 void nes_recheck_link_status(struct work_struct
*work
);
538 void nes_terminate_timeout(unsigned long context
);
541 struct net_device
*nes_netdev_init(struct nes_device
*, void __iomem
*);
542 void nes_netdev_destroy(struct net_device
*);
543 int nes_nic_cm_xmit(struct sk_buff
*, struct net_device
*);
546 void *nes_cm_create(struct net_device
*);
547 int nes_cm_recv(struct sk_buff
*, struct net_device
*);
548 void nes_update_arp(unsigned char *, u32
, u32
, u16
, u16
);
549 void nes_manage_arp_cache(struct net_device
*, unsigned char *, u32
, u32
);
550 void nes_sock_release(struct nes_qp
*, unsigned long *);
551 void flush_wqes(struct nes_device
*nesdev
, struct nes_qp
*, u32
, u32
);
552 int nes_manage_apbvt(struct nes_vnic
*, u32
, u32
, u32
);
553 int nes_cm_disconn(struct nes_qp
*);
554 void nes_cm_disconn_worker(void *);
557 int nes_hw_modify_qp(struct nes_device
*, struct nes_qp
*, u32
, u32
, u32
);
558 int nes_modify_qp(struct ib_qp
*, struct ib_qp_attr
*, int, struct ib_udata
*);
559 struct nes_ib_device
*nes_init_ofa_device(struct net_device
*);
560 void nes_port_ibevent(struct nes_vnic
*nesvnic
);
561 void nes_destroy_ofa_device(struct nes_ib_device
*);
562 int nes_register_ofa_device(struct nes_ib_device
*);
565 int nes_read_eeprom_values(struct nes_device
*, struct nes_adapter
*);
566 void nes_write_1G_phy_reg(struct nes_device
*, u8
, u8
, u16
);
567 void nes_read_1G_phy_reg(struct nes_device
*, u8
, u8
, u16
*);
568 void nes_write_10G_phy_reg(struct nes_device
*, u16
, u8
, u16
, u16
);
569 void nes_read_10G_phy_reg(struct nes_device
*, u8
, u8
, u16
);
570 struct nes_cqp_request
*nes_get_cqp_request(struct nes_device
*);
571 void nes_free_cqp_request(struct nes_device
*nesdev
,
572 struct nes_cqp_request
*cqp_request
);
573 void nes_put_cqp_request(struct nes_device
*nesdev
,
574 struct nes_cqp_request
*cqp_request
);
575 void nes_post_cqp_request(struct nes_device
*, struct nes_cqp_request
*);
576 int nes_arp_table(struct nes_device
*, u32
, u8
*, u32
);
577 void nes_mh_fix(unsigned long);
578 void nes_clc(unsigned long);
579 void nes_dump_mem(unsigned int, void *, int);
580 u32
nes_crc32(u32
, u32
, u32
, u32
, u8
*, u32
, u32
, u32
);