2 * SPDX-License-Identifier: BSD-2-Clause
4 * Copyright (c) 2016 Nicole Graziano <nicole@nextbsd.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, 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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #ifndef _EM_H_DEFINED_
32 #define _EM_H_DEFINED_
36 #include "opt_inet6.h"
39 #ifdef HAVE_KERNEL_OPTION_HEADERS
40 #include "opt_device_polling.h"
43 #include <sys/param.h>
44 #include <sys/systm.h>
46 #include <sys/types.h>
49 #include <sys/buf_ring.h>
51 #include <sys/endian.h>
52 #include <sys/kernel.h>
53 #include <sys/kthread.h>
54 #include <sys/malloc.h>
56 #include <sys/module.h>
59 #include <sys/socket.h>
60 #include <sys/sockio.h>
61 #include <sys/sysctl.h>
62 #include <sys/taskqueue.h>
63 #include <sys/eventhandler.h>
64 #include <machine/bus.h>
65 #include <machine/resource.h>
68 #include <net/ethernet.h>
70 #include <net/if_var.h>
71 #include <net/if_arp.h>
72 #include <net/if_dl.h>
73 #include <net/if_media.h>
74 #include <net/iflib.h>
76 #include <net/rss_config.h>
77 #include <netinet/in_rss.h>
80 #include <net/if_types.h>
81 #include <net/if_vlan_var.h>
83 #include <netinet/in_systm.h>
84 #include <netinet/in.h>
85 #include <netinet/if_ether.h>
86 #include <netinet/ip.h>
87 #include <netinet/ip6.h>
88 #include <netinet/tcp.h>
89 #include <netinet/udp.h>
91 #include <machine/in_cksum.h>
92 #include <dev/led/led.h>
93 #include <dev/pci/pcivar.h>
94 #include <dev/pci/pcireg.h>
96 #include "e1000_api.h"
97 #include "e1000_82571.h"
103 * EM_MAX_TXD: Maximum number of Transmit Descriptors
104 * Valid Range: 80-256 for 82542 and 82543-based adapters
106 * Default Value: 1024
107 * This value is the number of transmit descriptors allocated by the driver.
108 * Increasing this value allows the driver to queue more transmits. Each
109 * descriptor is 16 bytes.
110 * Since TDLEN should be multiple of 128bytes, the number of transmit
111 * desscriptors should meet the following condition.
112 * (num_tx_desc * sizeof(struct e1000_tx_desc)) % 128 == 0
114 #define EM_MIN_TXD 128
115 #define EM_MAX_TXD 4096
116 #define EM_DEFAULT_TXD 1024
117 #define EM_DEFAULT_MULTI_TXD 4096
118 #define IGB_MAX_TXD 4096
121 * EM_MAX_RXD - Maximum number of receive Descriptors
122 * Valid Range: 80-256 for 82542 and 82543-based adapters
124 * Default Value: 1024
125 * This value is the number of receive descriptors allocated by the driver.
126 * Increasing this value allows the driver to buffer more incoming packets.
127 * Each descriptor is 16 bytes. A receive buffer is also allocated for each
128 * descriptor. The maximum MTU size is 16110.
129 * Since TDLEN should be multiple of 128bytes, the number of transmit
130 * desscriptors should meet the following condition.
131 * (num_tx_desc * sizeof(struct e1000_tx_desc)) % 128 == 0
133 #define EM_MIN_RXD 128
134 #define EM_MAX_RXD 4096
135 #define EM_DEFAULT_RXD 1024
136 #define EM_DEFAULT_MULTI_RXD 4096
137 #define IGB_MAX_RXD 4096
140 * EM_TIDV - Transmit Interrupt Delay Value
141 * Valid Range: 0-65535 (0=off)
143 * This value delays the generation of transmit interrupts in units of
144 * 1.024 microseconds. Transmit interrupt reduction can improve CPU
145 * efficiency if properly tuned for specific network traffic. If the
146 * system is reporting dropped transmits, this value may be set too high
147 * causing the driver to run out of available transmit descriptors.
152 * EM_TADV - Transmit Absolute Interrupt Delay Value
153 * (Not valid for 82542/82543/82544)
154 * Valid Range: 0-65535 (0=off)
156 * This value, in units of 1.024 microseconds, limits the delay in which a
157 * transmit interrupt is generated. Useful only if EM_TIDV is non-zero,
158 * this value ensures that an interrupt is generated after the initial
159 * packet is sent on the wire within the set amount of time. Proper tuning,
160 * along with EM_TIDV, may improve traffic throughput in specific
161 * network conditions.
166 * EM_RDTR - Receive Interrupt Delay Timer (Packet Timer)
167 * Valid Range: 0-65535 (0=off)
169 * This value delays the generation of receive interrupts in units of 1.024
170 * microseconds. Receive interrupt reduction can improve CPU efficiency if
171 * properly tuned for specific network traffic. Increasing this value adds
172 * extra latency to frame reception and can end up decreasing the throughput
173 * of TCP traffic. If the system is reporting dropped receives, this value
174 * may be set too high, causing the driver to run out of available receive
177 * CAUTION: When setting EM_RDTR to a value other than 0, adapters
178 * may hang (stop transmitting) under certain network conditions.
179 * If this occurs a WATCHDOG message is logged in the system
180 * event log. In addition, the controller is automatically reset,
181 * restoring the network connection. To eliminate the potential
182 * for the hang ensure that EM_RDTR is set to 0.
187 * Receive Interrupt Absolute Delay Timer (Not valid for 82542/82543/82544)
188 * Valid Range: 0-65535 (0=off)
190 * This value, in units of 1.024 microseconds, limits the delay in which a
191 * receive interrupt is generated. Useful only if EM_RDTR is non-zero,
192 * this value ensures that an interrupt is generated after the initial
193 * packet is received within the set amount of time. Proper tuning,
194 * along with EM_RDTR, may improve traffic throughput in specific network
200 * This parameter controls whether or not autonegotation is enabled.
201 * 0 - Disable autonegotiation
202 * 1 - Enable autonegotiation
204 #define DO_AUTO_NEG 1
207 * This parameter control whether or not the driver will wait for
208 * autonegotiation to complete.
209 * 1 - Wait for autonegotiation to complete
210 * 0 - Don't wait for autonegotiation to complete
212 #define WAIT_FOR_AUTO_NEG_DEFAULT 0
214 /* Tunables -- End */
216 #define AUTONEG_ADV_DEFAULT (ADVERTISE_10_HALF | ADVERTISE_10_FULL | \
217 ADVERTISE_100_HALF | ADVERTISE_100_FULL | \
220 #define AUTO_ALL_MODES 0
222 /* PHY master/slave setting */
223 #define EM_MASTER_SLAVE e1000_ms_hw_default
226 * Miscellaneous constants
228 #define EM_VENDOR_ID 0x8086
229 #define EM_FLASH 0x0014
231 #define EM_JUMBO_PBA 0x00000028
232 #define EM_DEFAULT_PBA 0x00000030
233 #define EM_SMARTSPEED_DOWNSHIFT 3
234 #define EM_SMARTSPEED_MAX 15
235 #define EM_MAX_LOOP 10
237 #define MAX_NUM_MULTICAST_ADDRESSES 128
238 #define PCI_ANY_ID (~0U)
239 #define ETHER_ALIGN 2
240 #define EM_FC_PAUSE_TIME 0x0680
241 #define EM_EEPROM_APME 0x400;
242 #define EM_82544_APME 0x0004;
244 /* Support AutoMediaDetect for Marvell M88 PHY in i354 */
245 #define IGB_MEDIA_RESET (1 << 0)
247 /* Define the starting Interrupt rate per Queue */
248 #define IGB_INTS_PER_SEC 8000
249 #define IGB_DEFAULT_ITR ((1000000/IGB_INTS_PER_SEC) << 2)
251 #define IGB_LINK_ITR 2000
252 #define I210_LINK_DELAY 1000
254 #define IGB_TXPBSIZE 20408
255 #define IGB_HDR_BUF 128
256 #define IGB_PKTTYPE_MASK 0x0000FFF0
257 #define IGB_DMCTLX_DCFLUSH_DIS 0x80000000 /* Disable DMA Coalesce Flush */
260 * Driver state logic for the detection of a hung state
261 * in hardware. Set TX_HUNG whenever a TX packet is used
262 * (data is sent) and clear it when txeof() is invoked if
263 * any descriptors from the ring are cleaned/reclaimed.
264 * Increment internal counter if no descriptors are cleaned
265 * and compare to TX_MAXTRIES. When counter > TX_MAXTRIES,
268 #define EM_TX_IDLE 0x00000000
269 #define EM_TX_BUSY 0x00000001
270 #define EM_TX_HUNG 0x80000000
271 #define EM_TX_MAXTRIES 10
273 #define PCICFG_DESC_RING_STATUS 0xe4
274 #define FLUSH_DESC_REQUIRED 0x100
277 #define IGB_RX_PTHRESH ((hw->mac.type == e1000_i354) ? 12 : \
278 ((hw->mac.type <= e1000_82576) ? 16 : 8))
279 #define IGB_RX_HTHRESH 8
280 #define IGB_RX_WTHRESH ((hw->mac.type == e1000_82576 && \
281 (sc->intr_type == IFLIB_INTR_MSIX)) ? 1 : 4)
283 #define IGB_TX_PTHRESH ((hw->mac.type == e1000_i354) ? 20 : 8)
284 #define IGB_TX_HTHRESH 1
285 #define IGB_TX_WTHRESH ((hw->mac.type != e1000_82575 && \
286 sc->intr_type == IFLIB_INTR_MSIX) ? 1 : 16)
289 * TDBA/RDBA should be aligned on 16 byte boundary. But TDLEN/RDLEN should be
290 * multiple of 128 bytes. So we align TDBA/RDBA on 128 byte boundary. This will
291 * also optimize cache line size effect. H/W supports up to cache line size 128.
293 #define EM_DBA_ALIGN 128
296 * See Intel 82574 Driver Programming Interface Manual, Section 10.2.6.9
298 #define TARC_COMPENSATION_MODE (1 << 7) /* Compensation Mode */
299 #define TARC_SPEED_MODE_BIT (1 << 21) /* On PCI-E MACs only */
300 #define TARC_MQ_FIX (1 << 23) | \
302 (1 << 25) /* Handle errata in MQ mode */
303 #define TARC_ERRATA_BIT (1 << 26) /* Note from errata on 82574 */
305 /* PCI Config defines */
306 #define EM_BAR_TYPE(v) ((v) & EM_BAR_TYPE_MASK)
307 #define EM_BAR_TYPE_MASK 0x00000001
308 #define EM_BAR_TYPE_MMEM 0x00000000
309 #define EM_BAR_TYPE_IO 0x00000001
310 #define EM_BAR_TYPE_FLASH 0x0014
311 #define EM_BAR_MEM_TYPE(v) ((v) & EM_BAR_MEM_TYPE_MASK)
312 #define EM_BAR_MEM_TYPE_MASK 0x00000006
313 #define EM_BAR_MEM_TYPE_32BIT 0x00000000
314 #define EM_BAR_MEM_TYPE_64BIT 0x00000004
316 /* Defines for printing debug information */
318 #define DEBUG_IOCTL 0
321 #define INIT_DEBUGOUT(S) if (DEBUG_INIT) printf(S "\n")
322 #define INIT_DEBUGOUT1(S, A) if (DEBUG_INIT) printf(S "\n", A)
323 #define INIT_DEBUGOUT2(S, A, B) if (DEBUG_INIT) printf(S "\n", A, B)
324 #define IOCTL_DEBUGOUT(S) if (DEBUG_IOCTL) printf(S "\n")
325 #define IOCTL_DEBUGOUT1(S, A) if (DEBUG_IOCTL) printf(S "\n", A)
326 #define IOCTL_DEBUGOUT2(S, A, B) if (DEBUG_IOCTL) printf(S "\n", A, B)
327 #define HW_DEBUGOUT(S) if (DEBUG_HW) printf(S "\n")
328 #define HW_DEBUGOUT1(S, A) if (DEBUG_HW) printf(S "\n", A)
329 #define HW_DEBUGOUT2(S, A, B) if (DEBUG_HW) printf(S "\n", A, B)
331 #define EM_MAX_SCATTER 40
332 #define EM_VFTA_SIZE 128
333 #define EM_TSO_SIZE 65535
334 #define EM_TSO_SEG_SIZE 4096 /* Max dma segment size */
336 #define EM_CSUM_OFFLOAD (CSUM_IP | CSUM_IP_UDP | CSUM_IP_TCP) /* Offload bits in mbuf flag */
337 #define IGB_CSUM_OFFLOAD (CSUM_IP | CSUM_IP_UDP | CSUM_IP_TCP | \
338 CSUM_IP_SCTP | CSUM_IP6_UDP | CSUM_IP6_TCP | \
339 CSUM_IP6_SCTP) /* Offload bits in mbuf flag */
341 #define IGB_PKTTYPE_MASK 0x0000FFF0
342 #define IGB_DMCTLX_DCFLUSH_DIS 0x80000000 /* Disable DMA Coalesce Flush */
345 * 82574 has a nonstandard address for EIAC
346 * and since its only used in MSI-X, and in
347 * the em driver only 82574 uses MSI-X we can
348 * solve it just using this define.
350 #define EM_EIAC 0x000DC
352 * 82574 only reports 3 MSI-X vectors by default;
353 * defines assisting with making it report 5 are
356 #define EM_NVM_PCIE_CTRL 0x1B
357 #define EM_NVM_MSIX_N_MASK (0x7 << EM_NVM_MSIX_N_SHIFT)
358 #define EM_NVM_MSIX_N_SHIFT 7
362 struct em_int_delay_info {
363 struct e1000_softc *sc; /* Back-pointer to the sc struct */
364 int offset; /* Register offset to read/write */
365 int value; /* Current value in usecs */
369 * The transmit ring, one per tx queue
372 struct e1000_softc *sc;
373 struct e1000_tx_desc *tx_base;
376 bool tx_tso; /* last tx was tso */
380 qidx_t tx_cidx_processed;
381 /* Interrupt resources */
383 struct resource *res;
384 unsigned long tx_irq;
386 /* Saved csum offloading context information */
395 uint32_t csum_txd_upper;
396 uint32_t csum_txd_lower; /* last field */
400 * The Receive ring, one per rx queue
403 struct e1000_softc *sc;
404 struct em_rx_queue *que;
407 union e1000_rx_desc_extended *rx_base;
410 /* Interrupt resources */
412 struct resource *res;
416 unsigned long rx_irq;
417 unsigned long rx_discarded;
418 unsigned long rx_packets;
419 unsigned long rx_bytes;
423 struct e1000_softc *sc;
425 u32 eims; /* This queue's EIMS bit */
431 struct e1000_softc *sc;
437 struct if_irq que_irq;
440 /* Our softc structure */
445 if_softc_ctx_t shared;
447 #define tx_num_queues shared->isc_ntxqsets
448 #define rx_num_queues shared->isc_nrxqsets
449 #define intr_type shared->isc_intr
450 /* FreeBSD operating-system-specific structures. */
451 struct e1000_osdep osdep;
453 struct cdev *led_dev;
455 struct em_tx_queue *tx_queues;
456 struct em_rx_queue *rx_queues;
459 struct resource *memory;
460 struct resource *flash;
461 struct resource *ioport;
463 struct resource *res;
468 struct ifmedia *media;
471 int em_insert_vlan_header;
476 /* Task for FAST handling */
477 struct grouptask link_task;
482 u32 tx_process_limit;
483 u32 rx_process_limit;
486 /* Management and WOL features */
491 /* Multicast array memory */
495 ** Shadow VFTA table, this is needed because
496 ** the real vlan filter table gets cleared during
497 ** a soft reset and the driver needs to be able
500 u32 shadow_vfta[EM_VFTA_SIZE];
502 /* Info about the interface */
513 /* We need to store this at attach due to e1000 hw/sw locking model */
514 struct e1000_fw_version fw_ver;
516 struct em_int_delay_info tx_int_delay;
517 struct em_int_delay_info tx_abs_int_delay;
518 struct em_int_delay_info rx_int_delay;
519 struct em_int_delay_info rx_abs_int_delay;
520 struct em_int_delay_info tx_itr;
522 /* Misc stats maintained by the driver */
523 unsigned long dropped_pkts;
524 unsigned long link_irq;
525 unsigned long rx_overruns;
526 unsigned long watchdog_events;
528 struct e1000_hw_stats stats;
532 /********************************************************************************
535 * This array contains the list of Subvendor/Subdevice IDs on which the driver
538 ********************************************************************************/
539 typedef struct _em_vendor_info_t {
540 unsigned int vendor_id;
541 unsigned int device_id;
542 unsigned int subvendor_id;
543 unsigned int subdevice_id;
547 void em_dump_rs(struct e1000_softc *);
549 #define EM_RSSRK_SIZE 4
550 #define EM_RSSRK_VAL(key, i) (key[(i) * EM_RSSRK_SIZE] | \
551 key[(i) * EM_RSSRK_SIZE + 1] << 8 | \
552 key[(i) * EM_RSSRK_SIZE + 2] << 16 | \
553 key[(i) * EM_RSSRK_SIZE + 3] << 24)
554 #endif /* _EM_H_DEFINED_ */