1 /**************************************************************************
3 Copyright (c) 2001-2003, 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:
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13 notice, this list of conditions and the following disclaimer in the
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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
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29 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 POSSIBILITY OF SUCH DAMAGE.
32 ***************************************************************************/
34 /*$FreeBSD: src/sys/dev/em/if_em.h,v 1.1.2.13 2003/06/09 21:43:41 pdeuskar Exp $*/
35 /*$DragonFly: src/sys/dev/netif/em/if_em.h,v 1.3 2003/08/07 21:17:01 dillon Exp $*/
37 #ifndef _EM_H_DEFINED_
38 #define _EM_H_DEFINED_
41 #include <sys/param.h>
42 #include <sys/systm.h>
44 #include <sys/protosw.h>
45 #include <sys/socket.h>
46 #include <sys/malloc.h>
47 #include <sys/kernel.h>
48 #include <sys/sockio.h>
51 #include <net/if_arp.h>
52 #include <net/ethernet.h>
53 #include <net/if_dl.h>
54 #include <net/if_media.h>
57 #include <net/if_types.h>
58 #include <net/vlan/if_vlan_var.h>
60 #include <netinet/in_systm.h>
61 #include <netinet/in.h>
62 #include <netinet/ip.h>
63 #include <netinet/tcp.h>
64 #include <netinet/udp.h>
67 #include <machine/bus.h>
69 #include <machine/resource.h>
72 #include <machine/clock.h>
73 #include <bus/pci/pcivar.h>
74 #include <bus/pci/pcireg.h>
76 #include <sys/sysctl.h>
85 * Valid Range: 80-256 for 82542 and 82543-based adapters
88 * This value is the number of transmit descriptors allocated by the driver.
89 * Increasing this value allows the driver to queue more transmits. Each
90 * descriptor is 16 bytes.
92 #define EM_MAX_TXD 256
96 * Valid Range: 80-256 for 82542 and 82543-based adapters
99 * This value is the number of receive descriptors allocated by the driver.
100 * Increasing this value allows the driver to buffer more incoming packets.
101 * Each descriptor is 16 bytes. A receive buffer is also allocated for each
102 * descriptor. The maximum MTU size is 16110.
105 #define EM_MAX_RXD 256
109 * Valid Range: 0-65535 (0=off)
111 * This value delays the generation of transmit interrupts in units of
112 * 1.024 microseconds. Transmit interrupt reduction can improve CPU
113 * efficiency if properly tuned for specific network traffic. If the
114 * system is reporting dropped transmits, this value may be set too high
115 * causing the driver to run out of available transmit descriptors.
120 * TxAbsIntDelay (Not valid for 82542 and 82543)
121 * Valid Range: 0-65535 (0=off)
123 * This value, in units of 1.024 microseconds, limits the delay in which a
124 * transmit interrupt is generated. Useful only if TxIntDelay is non-zero,
125 * this value ensures that an interrupt is generated after the initial
126 * packet is sent on the wire within the set amount of time. Proper tuning,
127 * along with TxIntDelay, may improve traffic throughput in specific
128 * network conditions.
134 * Valid Range: 0-65535 (0=off)
136 * This value delays the generation of receive interrupts in units of 1.024
137 * microseconds. Receive interrupt reduction can improve CPU efficiency if
138 * properly tuned for specific network traffic. Increasing this value adds
139 * extra latency to frame reception and can end up decreasing the throughput
140 * of TCP traffic. If the system is reporting dropped receives, this value
141 * may be set too high, causing the driver to run out of available receive
144 * CAUTION: When setting RxIntDelay to a value other than 0, adapters
145 * may hang (stop transmitting) under certain network conditions.
146 * If this occurs a WATCHDOG message is logged in the system event log.
147 * In addition, the controller is automatically reset, restoring the
148 * network connection. To eliminate the potential for the hang
149 * ensure that RxIntDelay is set to 0.
154 * RxAbsIntDelay (Not valid for 82542 and 82543)
155 * Valid Range: 0-65535 (0=off)
157 * This value, in units of 1.024 microseconds, limits the delay in which a
158 * receive interrupt is generated. Useful only if RxIntDelay is non-zero,
159 * this value ensures that an interrupt is generated after the initial
160 * packet is received within the set amount of time. Proper tuning,
161 * along with RxIntDelay, may improve traffic throughput in specific network
168 * This parameter controls the maximum no of times the driver will loop
172 #define EM_MAX_INTR 3
175 * Inform the stack about transmit checksum offload capabilities.
177 #define EM_CHECKSUM_FEATURES (CSUM_TCP | CSUM_UDP)
180 * This parameter controls the duration of transmit watchdog timer.
182 #define EM_TX_TIMEOUT 5 /* set to 5 seconds */
185 * This parameter controls when the driver calls the routine to reclaim
186 * transmit descriptors.
188 #define EM_TX_CLEANUP_THRESHOLD EM_MAX_TXD / 8
191 * This parameter controls whether or not autonegotation is enabled.
192 * 0 - Disable autonegotiation
193 * 1 - Enable autonegotiation
195 #define DO_AUTO_NEG 1
198 * This parameter control whether or not the driver will wait for
199 * autonegotiation to complete.
200 * 1 - Wait for autonegotiation to complete
201 * 0 - Don't wait for autonegotiation to complete
203 #define WAIT_FOR_AUTO_NEG_DEFAULT 1
206 /* Tunables -- End */
208 #define AUTONEG_ADV_DEFAULT (ADVERTISE_10_HALF | ADVERTISE_10_FULL | \
209 ADVERTISE_100_HALF | ADVERTISE_100_FULL | \
212 #define EM_VENDOR_ID 0x8086
213 #define EM_MMBA 0x0010 /* Mem base address */
214 #define EM_ROUNDUP(size, unit) (((size) + (unit) - 1) & ~((unit) - 1))
216 #define EM_JUMBO_PBA 0x00000028
217 #define EM_DEFAULT_PBA 0x00000030
218 #define EM_SMARTSPEED_DOWNSHIFT 3
219 #define EM_SMARTSPEED_MAX 15
222 #define MAX_NUM_MULTICAST_ADDRESSES 128
223 #define PCI_ANY_ID (~0U)
224 #define ETHER_ALIGN 2
226 /* Defines for printing debug information */
228 #define DEBUG_IOCTL 0
231 #define INIT_DEBUGOUT(S) if (DEBUG_INIT) printf(S "\n")
232 #define INIT_DEBUGOUT1(S, A) if (DEBUG_INIT) printf(S "\n", A)
233 #define INIT_DEBUGOUT2(S, A, B) if (DEBUG_INIT) printf(S "\n", A, B)
234 #define IOCTL_DEBUGOUT(S) if (DEBUG_IOCTL) printf(S "\n")
235 #define IOCTL_DEBUGOUT1(S, A) if (DEBUG_IOCTL) printf(S "\n", A)
236 #define IOCTL_DEBUGOUT2(S, A, B) if (DEBUG_IOCTL) printf(S "\n", A, B)
237 #define HW_DEBUGOUT(S) if (DEBUG_HW) printf(S "\n")
238 #define HW_DEBUGOUT1(S, A) if (DEBUG_HW) printf(S "\n", A)
239 #define HW_DEBUGOUT2(S, A, B) if (DEBUG_HW) printf(S "\n", A, B)
242 /* Supported RX Buffer Sizes */
243 #define EM_RXBUFFER_2048 2048
244 #define EM_RXBUFFER_4096 4096
245 #define EM_RXBUFFER_8192 8192
246 #define EM_RXBUFFER_16384 16384
250 #define vtophys(va) alpha_XXX_dmamap((vm_offset_t)(va))
251 #endif /* __alpha__ */
253 /* ******************************************************************************
256 * This array contains the list of Subvendor/Subdevice IDs on which the driver
259 * ******************************************************************************/
260 typedef struct _em_vendor_info_t {
261 unsigned int vendor_id;
262 unsigned int device_id;
263 unsigned int subvendor_id;
264 unsigned int subdevice_id;
274 typedef enum _XSUM_CONTEXT_T {
280 /* Our adapter structure */
282 struct arpcom interface_data;
283 struct adapter *next;
284 struct adapter *prev;
287 /* FreeBSD operating-system-specific structures */
288 struct em_osdep osdep;
290 struct resource *res_memory;
291 struct resource *res_ioport;
292 struct resource *res_interrupt;
293 void *int_handler_tag;
294 struct ifmedia media;
295 struct callout_handle timer_handle;
296 struct callout_handle tx_fifo_timer_handle;
300 /* Info about the board itself */
302 u_int8_t link_active;
303 u_int16_t link_speed;
304 u_int16_t link_duplex;
305 u_int32_t smartspeed;
306 u_int32_t tx_int_delay;
307 u_int32_t tx_abs_int_delay;
308 u_int32_t rx_int_delay;
309 u_int32_t rx_abs_int_delay;
311 XSUM_CONTEXT_T active_checksum_context;
314 * Transmit definitions
316 * We have an array of num_tx_desc descriptors (handled
317 * by the controller) paired with an array of tx_buffers
318 * (at tx_buffer_area).
319 * The index of the next available descriptor is next_avail_tx_desc.
320 * The number of remaining tx_desc is num_tx_desc_avail.
322 struct em_tx_desc *tx_desc_base;
323 u_int32_t next_avail_tx_desc;
324 u_int32_t oldest_used_tx_desc;
325 volatile u_int16_t num_tx_desc_avail;
326 u_int16_t num_tx_desc;
328 struct em_buffer *tx_buffer_area;
331 * Receive definitions
333 * we have an array of num_rx_desc rx_desc (handled by the
334 * controller), and paired with an array of rx_buffers
335 * (at rx_buffer_area).
336 * The next pair to check on receive is at offset next_rx_desc_to_check
338 struct em_rx_desc *rx_desc_base;
339 u_int32_t next_rx_desc_to_check;
340 u_int16_t num_rx_desc;
341 u_int32_t rx_buffer_len;
342 struct em_buffer *rx_buffer_area;
348 u_int16_t tx_fifo_head;
350 struct sysctl_ctx_list sysctl_ctx;
351 struct sysctl_oid *sysctl_tree;
353 /* Misc stats maintained by the driver */
354 unsigned long dropped_pkts;
355 unsigned long mbuf_alloc_failed;
356 unsigned long mbuf_cluster_failed;
357 unsigned long no_tx_desc_avail1;
358 unsigned long no_tx_desc_avail2;
359 u_int64_t tx_fifo_reset;
360 u_int64_t tx_fifo_wrk;
363 unsigned long no_pkts_avail;
364 unsigned long clean_tx_interrupts;
367 struct em_hw_stats stats;
370 #endif /* _EM_H_DEFINED_ */