1 /******************************************************************************
3 Copyright (c) 2001-2012, Intel Corporation
6 Redistribution and use in source and binary forms, with or without
7 modification, are permitted provided that the following conditions are met:
9 1. Redistributions of source code must retain the above copyright notice,
10 this list of conditions and the following disclaimer.
12 2. Redistributions in binary form must reproduce the above copyright
13 notice, this list of conditions and the following disclaimer in the
14 documentation and/or other materials provided with the distribution.
16 3. Neither the name of the Intel Corporation nor the names of its
17 contributors may be used to endorse or promote products derived from
18 this software without specific prior written permission.
20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 POSSIBILITY OF SUCH DAMAGE.
32 ******************************************************************************/
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #if __FreeBSD_version >= 800000
43 #include <sys/buf_ring.h>
46 #include <sys/protosw.h>
47 #include <sys/socket.h>
48 #include <sys/malloc.h>
49 #include <sys/kernel.h>
50 #include <sys/module.h>
51 #include <sys/sockio.h>
54 #include <net/if_arp.h>
56 #include <net/ethernet.h>
57 #include <net/if_dl.h>
58 #include <net/if_media.h>
61 #include <net/if_types.h>
62 #include <net/if_vlan_var.h>
64 #include <netinet/in_systm.h>
65 #include <netinet/in.h>
66 #include <netinet/if_ether.h>
67 #include <netinet/ip.h>
68 #include <netinet/ip6.h>
69 #include <netinet/tcp.h>
70 #include <netinet/tcp_lro.h>
71 #include <netinet/udp.h>
73 #include <machine/in_cksum.h>
76 #include <machine/bus.h>
78 #include <machine/resource.h>
81 #include <machine/clock.h>
82 #include <dev/pci/pcivar.h>
83 #include <dev/pci/pcireg.h>
85 #include <sys/sysctl.h>
86 #include <sys/endian.h>
87 #include <sys/taskqueue.h>
90 #include <machine/smp.h>
93 #include <sys/ieee1588.h>
96 #include "ixgbe_api.h"
101 * TxDescriptors Valid Range: 64-4096 Default Value: 256 This value is the
102 * number of transmit descriptors allocated by the driver. Increasing this
103 * value allows the driver to queue more transmits. Each descriptor is 16
104 * bytes. Performance tests have show the 2K value to be optimal for top
107 #define DEFAULT_TXD 1024
108 #define PERFORM_TXD 2048
113 * RxDescriptors Valid Range: 64-4096 Default Value: 256 This value is the
114 * number of receive descriptors allocated for each RX queue. Increasing this
115 * value allows the driver to buffer more incoming packets. Each descriptor
116 * is 16 bytes. A receive buffer is also allocated for each descriptor.
118 * Note: with 8 rings and a dual port card, it is possible to bump up
119 * against the system mbuf pool limit, you can tune nmbclusters
120 * to adjust for this.
122 #define DEFAULT_RXD 1024
123 #define PERFORM_RXD 2048
127 /* Alignment for rings */
128 #define DBA_ALIGN 128
131 * This parameter controls the maximum no of times the driver will loop in
132 * the isr. Minimum Value = 1
137 * This is the max watchdog interval, ie. the time that can
138 * pass between any two TX clean operations, such only happening
139 * when the TX hardware is functioning.
141 #define IXGBE_WATCHDOG (10 * hz)
144 * This parameters control when the driver calls the routine to reclaim
145 * transmit descriptors.
147 #define IXGBE_TX_CLEANUP_THRESHOLD (adapter->num_tx_desc / 8)
148 #define IXGBE_TX_OP_THRESHOLD (adapter->num_tx_desc / 32)
150 #define IXGBE_MAX_FRAME_SIZE 0x3F00
152 /* Flow control constants */
153 #define IXGBE_FC_PAUSE 0xFFFF
154 #define IXGBE_FC_HI 0x20000
155 #define IXGBE_FC_LO 0x10000
158 * Used for optimizing small rx mbufs. Effort is made to keep the copy
159 * small and aligned for the CPU L1 cache.
161 * MHLEN is typically 168 bytes, giving us 8-byte alignment. Getting
162 * 32 byte alignment needed for the fast bcopy results in 8 bytes being
163 * wasted. Getting 64 byte alignment, which _should_ be ideal for
164 * modern Intel CPUs, results in 40 bytes wasted and a significant drop
165 * in observed efficiency of the optimization, 97.9% -> 81.8%.
167 #define IXGBE_RX_COPY_LEN 160
168 #define IXGBE_RX_COPY_ALIGN (MHLEN - IXGBE_RX_COPY_LEN)
170 /* Keep older OS drivers building... */
171 #if !defined(SYSCTL_ADD_UQUAD)
172 #define SYSCTL_ADD_UQUAD SYSCTL_ADD_QUAD
175 /* Defines for printing debug information */
177 #define DEBUG_IOCTL 0
180 #define INIT_DEBUGOUT(S) if (DEBUG_INIT) printf(S "\n")
181 #define INIT_DEBUGOUT1(S, A) if (DEBUG_INIT) printf(S "\n", A)
182 #define INIT_DEBUGOUT2(S, A, B) if (DEBUG_INIT) printf(S "\n", A, B)
183 #define IOCTL_DEBUGOUT(S) if (DEBUG_IOCTL) printf(S "\n")
184 #define IOCTL_DEBUGOUT1(S, A) if (DEBUG_IOCTL) printf(S "\n", A)
185 #define IOCTL_DEBUGOUT2(S, A, B) if (DEBUG_IOCTL) printf(S "\n", A, B)
186 #define HW_DEBUGOUT(S) if (DEBUG_HW) printf(S "\n")
187 #define HW_DEBUGOUT1(S, A) if (DEBUG_HW) printf(S "\n", A)
188 #define HW_DEBUGOUT2(S, A, B) if (DEBUG_HW) printf(S "\n", A, B)
190 #define MAX_NUM_MULTICAST_ADDRESSES 128
191 #define IXGBE_82598_SCATTER 100
192 #define IXGBE_82599_SCATTER 32
193 #define MSIX_82598_BAR 3
194 #define MSIX_82599_BAR 4
195 #define IXGBE_TSO_SIZE 262140
196 #define IXGBE_TX_BUFFER_SIZE ((u32) 1514)
197 #define IXGBE_RX_HDR 128
198 #define IXGBE_VFTA_SIZE 128
199 #define IXGBE_BR_SIZE 4096
200 #define IXGBE_QUEUE_MIN_FREE 32
201 #define IXGBE_QUEUE_IDLE 1
202 #define IXGBE_QUEUE_WORKING 2
203 #define IXGBE_QUEUE_HUNG 4
204 #define IXGBE_QUEUE_DEPLETED 8
206 /* Offload bits in mbuf flag */
207 #if __FreeBSD_version >= 800000
208 #define CSUM_OFFLOAD (CSUM_IP|CSUM_TCP|CSUM_UDP|CSUM_SCTP)
210 #define CSUM_OFFLOAD (CSUM_IP|CSUM_TCP|CSUM_UDP)
213 /* For 6.X code compatibility */
214 #if !defined(ETHER_BPF_MTAP)
215 #define ETHER_BPF_MTAP BPF_MTAP
218 #if __FreeBSD_version < 700000
224 * Interrupt Moderation parameters
226 #define IXGBE_LOW_LATENCY 128
227 #define IXGBE_AVE_LATENCY 400
228 #define IXGBE_BULK_LATENCY 1200
229 #define IXGBE_LINK_ITR 2000
232 *****************************************************************************
235 * This array contains the list of Subvendor/Subdevice IDs on which the driver
238 *****************************************************************************
240 typedef struct _ixgbe_vendor_info_t {
241 unsigned int vendor_id;
242 unsigned int device_id;
243 unsigned int subvendor_id;
244 unsigned int subdevice_id;
246 } ixgbe_vendor_info_t;
249 struct ixgbe_tx_buf {
255 struct ixgbe_rx_buf {
262 #define IXGBE_RX_COPY 0x01
267 * Bus dma allocation structure used by ixgbe_dma_malloc and ixgbe_dma_free.
269 struct ixgbe_dma_alloc {
270 bus_addr_t dma_paddr;
272 bus_dma_tag_t dma_tag;
273 bus_dmamap_t dma_map;
274 bus_dma_segment_t dma_seg;
280 ** Driver queue struct: this is the interrupt container
281 ** for the associated tx and rx ring.
284 struct adapter *adapter;
285 u32 msix; /* This queue's MSIX vector */
286 u32 eims; /* This queue's EIMS bit */
288 struct resource *res;
292 struct task que_task;
293 struct taskqueue *tq;
298 * The transmit ring, one per queue
301 struct adapter *adapter;
306 union ixgbe_adv_tx_desc *tx_base;
307 struct ixgbe_dma_alloc txdma;
310 struct ixgbe_tx_buf *tx_buffers;
311 volatile u16 tx_avail;
315 #if __FreeBSD_version >= 800000
322 u32 bytes; /* used for AIM */
331 * The Receive ring, one per rx queue
334 struct adapter *adapter;
337 union ixgbe_adv_rx_desc *rx_base;
338 struct ixgbe_dma_alloc rxdma;
348 struct ixgbe_rx_buf *rx_buffers;
352 u32 bytes; /* Used for AIM calc */
357 u64 rx_split_packets;
368 /* Our adapter structure */
373 struct ixgbe_osdep osdep;
376 struct resource *pci_mem;
377 struct resource *msix_mem;
380 * Interrupt resources: this set is
381 * either used for legacy, or for Link
385 struct resource *res;
387 struct ifmedia media;
388 struct callout timer;
394 eventhandler_tag vlan_attach;
395 eventhandler_tag vlan_detach;
401 ** Shadow VFTA table, this is needed because
402 ** the real vlan filter table gets cleared during
403 ** a soft reset and the driver needs to be able
406 u32 shadow_vfta[IXGBE_VFTA_SIZE];
408 /* Info about the interface */
410 u32 fc; /* local flow ctrl setting */
411 int advertise; /* link speeds */
419 /* Mbuf cluster size */
422 /* Support for pluggable optics */
424 struct task link_task; /* Link tasklet */
425 struct task mod_task; /* SFP tasklet */
426 struct task msf_task; /* Multispeed Fiber */
429 struct task fdir_task;
431 struct taskqueue *tq;
435 ** This is the irq holder, it has
436 ** and RX/TX pair or rings associated
439 struct ix_queue *queues;
443 * Allocated at run time, an array of rings.
445 struct tx_ring *tx_rings;
450 * Allocated at run time, an array of rings.
452 struct rx_ring *rx_rings;
455 u32 rx_process_limit;
457 /* Multicast array memory */
460 /* Misc stats maintained by the driver */
461 unsigned long dropped_pkts;
462 unsigned long mbuf_defrag_failed;
463 unsigned long mbuf_header_failed;
464 unsigned long mbuf_packet_failed;
465 unsigned long no_tx_map_avail;
466 unsigned long no_tx_dma_setup;
467 unsigned long watchdog_events;
468 unsigned long tso_tx;
469 unsigned long link_irq;
471 struct ixgbe_hw_stats stats;
474 /* Precision Time Sync (IEEE 1588) defines */
475 #define ETHERTYPE_IEEE1588 0x88F7
476 #define PICOSECS_PER_TICK 20833
477 #define TSYNC_UDP_PORT 319 /* UDP port for the protocol */
478 #define IXGBE_ADVTXD_TSTAMP 0x00080000
481 #define IXGBE_CORE_LOCK_INIT(_sc, _name) \
482 mtx_init(&(_sc)->core_mtx, _name, "IXGBE Core Lock", MTX_DEF)
483 #define IXGBE_CORE_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->core_mtx)
484 #define IXGBE_TX_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->tx_mtx)
485 #define IXGBE_RX_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->rx_mtx)
486 #define IXGBE_CORE_LOCK(_sc) mtx_lock(&(_sc)->core_mtx)
487 #define IXGBE_TX_LOCK(_sc) mtx_lock(&(_sc)->tx_mtx)
488 #define IXGBE_TX_TRYLOCK(_sc) mtx_trylock(&(_sc)->tx_mtx)
489 #define IXGBE_RX_LOCK(_sc) mtx_lock(&(_sc)->rx_mtx)
490 #define IXGBE_CORE_UNLOCK(_sc) mtx_unlock(&(_sc)->core_mtx)
491 #define IXGBE_TX_UNLOCK(_sc) mtx_unlock(&(_sc)->tx_mtx)
492 #define IXGBE_RX_UNLOCK(_sc) mtx_unlock(&(_sc)->rx_mtx)
493 #define IXGBE_CORE_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->core_mtx, MA_OWNED)
494 #define IXGBE_TX_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->tx_mtx, MA_OWNED)
498 ixgbe_is_sfp(struct ixgbe_hw *hw)
500 switch (hw->phy.type) {
501 case ixgbe_phy_sfp_avago:
502 case ixgbe_phy_sfp_ftl:
503 case ixgbe_phy_sfp_intel:
504 case ixgbe_phy_sfp_unknown:
505 case ixgbe_phy_sfp_passive_tyco:
506 case ixgbe_phy_sfp_passive_unknown:
513 /* Workaround to make 8.0 buildable */
514 #if __FreeBSD_version >= 800000 && __FreeBSD_version < 800504
516 drbr_needs_enqueue(struct ifnet *ifp, struct buf_ring *br)
519 if (ALTQ_IS_ENABLED(&ifp->if_snd))
522 return (!buf_ring_empty(br));
527 ** Find the number of unrefreshed RX descriptors
530 ixgbe_rx_unrefreshed(struct rx_ring *rxr)
532 struct adapter *adapter = rxr->adapter;
534 if (rxr->next_to_check > rxr->next_to_refresh)
535 return (rxr->next_to_check - rxr->next_to_refresh - 1);
537 return ((adapter->num_rx_desc + rxr->next_to_check) -
538 rxr->next_to_refresh - 1);
541 #endif /* _IXGBE_H_ */