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 ******************************************************************************/
36 #include "opt_inet6.h"
38 #ifdef HAVE_KERNEL_OPTION_HEADERS
39 #include "opt_device_polling.h"
42 #include <sys/param.h>
43 #include <sys/systm.h>
45 #include <sys/endian.h>
46 #include <sys/kernel.h>
47 #include <sys/kthread.h>
48 #include <sys/malloc.h>
50 #include <sys/module.h>
52 #include <sys/socket.h>
53 #include <sys/sockio.h>
54 #include <sys/sysctl.h>
55 #include <sys/taskqueue.h>
56 #include <sys/eventhandler.h>
57 #include <machine/bus.h>
58 #include <machine/resource.h>
61 #include <net/ethernet.h>
63 #include <net/if_arp.h>
64 #include <net/if_dl.h>
65 #include <net/if_media.h>
67 #include <net/if_types.h>
68 #include <net/if_vlan_var.h>
70 #include <netinet/in_systm.h>
71 #include <netinet/in.h>
72 #include <netinet/if_ether.h>
73 #include <netinet/ip.h>
74 #include <netinet/ip6.h>
75 #include <netinet/tcp.h>
76 #include <netinet/udp.h>
78 #include <machine/in_cksum.h>
79 #include <dev/led/led.h>
80 #include <dev/pci/pcivar.h>
81 #include <dev/pci/pcireg.h>
83 #include "e1000_api.h"
86 /*********************************************************************
87 * Legacy Em Driver version:
88 *********************************************************************/
89 char lem_driver_version[] = "1.0.6";
91 /*********************************************************************
94 * Used by probe to select devices to load on
95 * Last field stores an index into e1000_strings
96 * Last entry must be all 0s
98 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, String Index }
99 *********************************************************************/
101 static em_vendor_info_t lem_vendor_info_array[] =
103 /* Intel(R) PRO/1000 Network Connection */
104 { 0x8086, E1000_DEV_ID_82540EM, PCI_ANY_ID, PCI_ANY_ID, 0},
105 { 0x8086, E1000_DEV_ID_82540EM_LOM, PCI_ANY_ID, PCI_ANY_ID, 0},
106 { 0x8086, E1000_DEV_ID_82540EP, PCI_ANY_ID, PCI_ANY_ID, 0},
107 { 0x8086, E1000_DEV_ID_82540EP_LOM, PCI_ANY_ID, PCI_ANY_ID, 0},
108 { 0x8086, E1000_DEV_ID_82540EP_LP, PCI_ANY_ID, PCI_ANY_ID, 0},
110 { 0x8086, E1000_DEV_ID_82541EI, PCI_ANY_ID, PCI_ANY_ID, 0},
111 { 0x8086, E1000_DEV_ID_82541ER, PCI_ANY_ID, PCI_ANY_ID, 0},
112 { 0x8086, E1000_DEV_ID_82541ER_LOM, PCI_ANY_ID, PCI_ANY_ID, 0},
113 { 0x8086, E1000_DEV_ID_82541EI_MOBILE, PCI_ANY_ID, PCI_ANY_ID, 0},
114 { 0x8086, E1000_DEV_ID_82541GI, PCI_ANY_ID, PCI_ANY_ID, 0},
115 { 0x8086, E1000_DEV_ID_82541GI_LF, PCI_ANY_ID, PCI_ANY_ID, 0},
116 { 0x8086, E1000_DEV_ID_82541GI_MOBILE, PCI_ANY_ID, PCI_ANY_ID, 0},
118 { 0x8086, E1000_DEV_ID_82542, PCI_ANY_ID, PCI_ANY_ID, 0},
120 { 0x8086, E1000_DEV_ID_82543GC_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0},
121 { 0x8086, E1000_DEV_ID_82543GC_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0},
123 { 0x8086, E1000_DEV_ID_82544EI_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0},
124 { 0x8086, E1000_DEV_ID_82544EI_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0},
125 { 0x8086, E1000_DEV_ID_82544GC_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0},
126 { 0x8086, E1000_DEV_ID_82544GC_LOM, PCI_ANY_ID, PCI_ANY_ID, 0},
128 { 0x8086, E1000_DEV_ID_82545EM_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0},
129 { 0x8086, E1000_DEV_ID_82545EM_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0},
130 { 0x8086, E1000_DEV_ID_82545GM_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0},
131 { 0x8086, E1000_DEV_ID_82545GM_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0},
132 { 0x8086, E1000_DEV_ID_82545GM_SERDES, PCI_ANY_ID, PCI_ANY_ID, 0},
134 { 0x8086, E1000_DEV_ID_82546EB_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0},
135 { 0x8086, E1000_DEV_ID_82546EB_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0},
136 { 0x8086, E1000_DEV_ID_82546EB_QUAD_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0},
137 { 0x8086, E1000_DEV_ID_82546GB_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0},
138 { 0x8086, E1000_DEV_ID_82546GB_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0},
139 { 0x8086, E1000_DEV_ID_82546GB_SERDES, PCI_ANY_ID, PCI_ANY_ID, 0},
140 { 0x8086, E1000_DEV_ID_82546GB_PCIE, PCI_ANY_ID, PCI_ANY_ID, 0},
141 { 0x8086, E1000_DEV_ID_82546GB_QUAD_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0},
142 { 0x8086, E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3,
143 PCI_ANY_ID, PCI_ANY_ID, 0},
145 { 0x8086, E1000_DEV_ID_82547EI, PCI_ANY_ID, PCI_ANY_ID, 0},
146 { 0x8086, E1000_DEV_ID_82547EI_MOBILE, PCI_ANY_ID, PCI_ANY_ID, 0},
147 { 0x8086, E1000_DEV_ID_82547GI, PCI_ANY_ID, PCI_ANY_ID, 0},
148 /* required last entry */
152 /*********************************************************************
153 * Table of branding strings for all supported NICs.
154 *********************************************************************/
156 static char *lem_strings[] = {
157 "Intel(R) PRO/1000 Legacy Network Connection"
160 /*********************************************************************
161 * Function prototypes
162 *********************************************************************/
163 static int lem_probe(device_t);
164 static int lem_attach(device_t);
165 static int lem_detach(device_t);
166 static int lem_shutdown(device_t);
167 static int lem_suspend(device_t);
168 static int lem_resume(device_t);
169 static void lem_start(struct ifnet *);
170 static void lem_start_locked(struct ifnet *ifp);
171 static int lem_ioctl(struct ifnet *, u_long, caddr_t);
172 static void lem_init(void *);
173 static void lem_init_locked(struct adapter *);
174 static void lem_stop(void *);
175 static void lem_media_status(struct ifnet *, struct ifmediareq *);
176 static int lem_media_change(struct ifnet *);
177 static void lem_identify_hardware(struct adapter *);
178 static int lem_allocate_pci_resources(struct adapter *);
179 static int lem_allocate_irq(struct adapter *adapter);
180 static void lem_free_pci_resources(struct adapter *);
181 static void lem_local_timer(void *);
182 static int lem_hardware_init(struct adapter *);
183 static int lem_setup_interface(device_t, struct adapter *);
184 static void lem_setup_transmit_structures(struct adapter *);
185 static void lem_initialize_transmit_unit(struct adapter *);
186 static int lem_setup_receive_structures(struct adapter *);
187 static void lem_initialize_receive_unit(struct adapter *);
188 static void lem_enable_intr(struct adapter *);
189 static void lem_disable_intr(struct adapter *);
190 static void lem_free_transmit_structures(struct adapter *);
191 static void lem_free_receive_structures(struct adapter *);
192 static void lem_update_stats_counters(struct adapter *);
193 static void lem_add_hw_stats(struct adapter *adapter);
194 static void lem_txeof(struct adapter *);
195 static void lem_tx_purge(struct adapter *);
196 static int lem_allocate_receive_structures(struct adapter *);
197 static int lem_allocate_transmit_structures(struct adapter *);
198 static bool lem_rxeof(struct adapter *, int, int *);
199 #ifndef __NO_STRICT_ALIGNMENT
200 static int lem_fixup_rx(struct adapter *);
202 static void lem_receive_checksum(struct adapter *, struct e1000_rx_desc *,
204 static void lem_transmit_checksum_setup(struct adapter *, struct mbuf *,
206 static void lem_set_promisc(struct adapter *);
207 static void lem_disable_promisc(struct adapter *);
208 static void lem_set_multi(struct adapter *);
209 static void lem_update_link_status(struct adapter *);
210 static int lem_get_buf(struct adapter *, int);
211 static void lem_register_vlan(void *, struct ifnet *, u16);
212 static void lem_unregister_vlan(void *, struct ifnet *, u16);
213 static void lem_setup_vlan_hw_support(struct adapter *);
214 static int lem_xmit(struct adapter *, struct mbuf **);
215 static void lem_smartspeed(struct adapter *);
216 static int lem_82547_fifo_workaround(struct adapter *, int);
217 static void lem_82547_update_fifo_head(struct adapter *, int);
218 static int lem_82547_tx_fifo_reset(struct adapter *);
219 static void lem_82547_move_tail(void *);
220 static int lem_dma_malloc(struct adapter *, bus_size_t,
221 struct em_dma_alloc *, int);
222 static void lem_dma_free(struct adapter *, struct em_dma_alloc *);
223 static int lem_sysctl_nvm_info(SYSCTL_HANDLER_ARGS);
224 static void lem_print_nvm_info(struct adapter *);
225 static int lem_is_valid_ether_addr(u8 *);
226 static u32 lem_fill_descriptors (bus_addr_t address, u32 length,
227 PDESC_ARRAY desc_array);
228 static int lem_sysctl_int_delay(SYSCTL_HANDLER_ARGS);
229 static void lem_add_int_delay_sysctl(struct adapter *, const char *,
230 const char *, struct em_int_delay_info *, int, int);
231 static void lem_set_flow_cntrl(struct adapter *, const char *,
232 const char *, int *, int);
233 /* Management and WOL Support */
234 static void lem_init_manageability(struct adapter *);
235 static void lem_release_manageability(struct adapter *);
236 static void lem_get_hw_control(struct adapter *);
237 static void lem_release_hw_control(struct adapter *);
238 static void lem_get_wakeup(device_t);
239 static void lem_enable_wakeup(device_t);
240 static int lem_enable_phy_wakeup(struct adapter *);
241 static void lem_led_func(void *, int);
243 static void lem_intr(void *);
244 static int lem_irq_fast(void *);
245 static void lem_handle_rxtx(void *context, int pending);
246 static void lem_handle_link(void *context, int pending);
247 static void lem_add_rx_process_limit(struct adapter *, const char *,
248 const char *, int *, int);
250 #ifdef DEVICE_POLLING
251 static poll_handler_t lem_poll;
254 /*********************************************************************
255 * FreeBSD Device Interface Entry Points
256 *********************************************************************/
258 static device_method_t lem_methods[] = {
259 /* Device interface */
260 DEVMETHOD(device_probe, lem_probe),
261 DEVMETHOD(device_attach, lem_attach),
262 DEVMETHOD(device_detach, lem_detach),
263 DEVMETHOD(device_shutdown, lem_shutdown),
264 DEVMETHOD(device_suspend, lem_suspend),
265 DEVMETHOD(device_resume, lem_resume),
269 static driver_t lem_driver = {
270 "em", lem_methods, sizeof(struct adapter),
273 extern devclass_t em_devclass;
274 DRIVER_MODULE(lem, pci, lem_driver, em_devclass, 0, 0);
275 MODULE_DEPEND(lem, pci, 1, 1, 1);
276 MODULE_DEPEND(lem, ether, 1, 1, 1);
278 /*********************************************************************
279 * Tunable default values.
280 *********************************************************************/
282 #define EM_TICKS_TO_USECS(ticks) ((1024 * (ticks) + 500) / 1000)
283 #define EM_USECS_TO_TICKS(usecs) ((1000 * (usecs) + 512) / 1024)
285 #define MAX_INTS_PER_SEC 8000
286 #define DEFAULT_ITR (1000000000/(MAX_INTS_PER_SEC * 256))
288 static int lem_tx_int_delay_dflt = EM_TICKS_TO_USECS(EM_TIDV);
289 static int lem_rx_int_delay_dflt = EM_TICKS_TO_USECS(EM_RDTR);
290 static int lem_tx_abs_int_delay_dflt = EM_TICKS_TO_USECS(EM_TADV);
291 static int lem_rx_abs_int_delay_dflt = EM_TICKS_TO_USECS(EM_RADV);
292 static int lem_rxd = EM_DEFAULT_RXD;
293 static int lem_txd = EM_DEFAULT_TXD;
294 static int lem_smart_pwr_down = FALSE;
296 /* Controls whether promiscuous also shows bad packets */
297 static int lem_debug_sbp = FALSE;
299 TUNABLE_INT("hw.em.tx_int_delay", &lem_tx_int_delay_dflt);
300 TUNABLE_INT("hw.em.rx_int_delay", &lem_rx_int_delay_dflt);
301 TUNABLE_INT("hw.em.tx_abs_int_delay", &lem_tx_abs_int_delay_dflt);
302 TUNABLE_INT("hw.em.rx_abs_int_delay", &lem_rx_abs_int_delay_dflt);
303 TUNABLE_INT("hw.em.rxd", &lem_rxd);
304 TUNABLE_INT("hw.em.txd", &lem_txd);
305 TUNABLE_INT("hw.em.smart_pwr_down", &lem_smart_pwr_down);
306 TUNABLE_INT("hw.em.sbp", &lem_debug_sbp);
308 /* Interrupt style - default to fast */
309 static int lem_use_legacy_irq = 0;
310 TUNABLE_INT("hw.em.use_legacy_irq", &lem_use_legacy_irq);
312 /* How many packets rxeof tries to clean at a time */
313 static int lem_rx_process_limit = 100;
314 TUNABLE_INT("hw.em.rx_process_limit", &lem_rx_process_limit);
316 /* Flow control setting - default to FULL */
317 static int lem_fc_setting = e1000_fc_full;
318 TUNABLE_INT("hw.em.fc_setting", &lem_fc_setting);
320 /* Global used in WOL setup with multiport cards */
321 static int global_quad_port_a = 0;
323 #ifdef DEV_NETMAP /* see ixgbe.c for details */
324 #include <dev/netmap/if_lem_netmap.h>
325 #endif /* DEV_NETMAP */
327 /*********************************************************************
328 * Device identification routine
330 * em_probe determines if the driver should be loaded on
331 * adapter based on PCI vendor/device id of the adapter.
333 * return BUS_PROBE_DEFAULT on success, positive on failure
334 *********************************************************************/
337 lem_probe(device_t dev)
339 char adapter_name[60];
340 u16 pci_vendor_id = 0;
341 u16 pci_device_id = 0;
342 u16 pci_subvendor_id = 0;
343 u16 pci_subdevice_id = 0;
344 em_vendor_info_t *ent;
346 INIT_DEBUGOUT("em_probe: begin");
348 pci_vendor_id = pci_get_vendor(dev);
349 if (pci_vendor_id != EM_VENDOR_ID)
352 pci_device_id = pci_get_device(dev);
353 pci_subvendor_id = pci_get_subvendor(dev);
354 pci_subdevice_id = pci_get_subdevice(dev);
356 ent = lem_vendor_info_array;
357 while (ent->vendor_id != 0) {
358 if ((pci_vendor_id == ent->vendor_id) &&
359 (pci_device_id == ent->device_id) &&
361 ((pci_subvendor_id == ent->subvendor_id) ||
362 (ent->subvendor_id == PCI_ANY_ID)) &&
364 ((pci_subdevice_id == ent->subdevice_id) ||
365 (ent->subdevice_id == PCI_ANY_ID))) {
366 sprintf(adapter_name, "%s %s",
367 lem_strings[ent->index],
369 device_set_desc_copy(dev, adapter_name);
370 return (BUS_PROBE_DEFAULT);
378 /*********************************************************************
379 * Device initialization routine
381 * The attach entry point is called when the driver is being loaded.
382 * This routine identifies the type of hardware, allocates all resources
383 * and initializes the hardware.
385 * return 0 on success, positive on failure
386 *********************************************************************/
389 lem_attach(device_t dev)
391 struct adapter *adapter;
395 INIT_DEBUGOUT("lem_attach: begin");
397 adapter = device_get_softc(dev);
398 adapter->dev = adapter->osdep.dev = dev;
399 EM_CORE_LOCK_INIT(adapter, device_get_nameunit(dev));
400 EM_TX_LOCK_INIT(adapter, device_get_nameunit(dev));
401 EM_RX_LOCK_INIT(adapter, device_get_nameunit(dev));
404 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
405 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
406 OID_AUTO, "nvm", CTLTYPE_INT|CTLFLAG_RW, adapter, 0,
407 lem_sysctl_nvm_info, "I", "NVM Information");
409 callout_init_mtx(&adapter->timer, &adapter->core_mtx, 0);
410 callout_init_mtx(&adapter->tx_fifo_timer, &adapter->tx_mtx, 0);
412 /* Determine hardware and mac info */
413 lem_identify_hardware(adapter);
415 /* Setup PCI resources */
416 if (lem_allocate_pci_resources(adapter)) {
417 device_printf(dev, "Allocation of PCI resources failed\n");
422 /* Do Shared Code initialization */
423 if (e1000_setup_init_funcs(&adapter->hw, TRUE)) {
424 device_printf(dev, "Setup of Shared code failed\n");
429 e1000_get_bus_info(&adapter->hw);
431 /* Set up some sysctls for the tunable interrupt delays */
432 lem_add_int_delay_sysctl(adapter, "rx_int_delay",
433 "receive interrupt delay in usecs", &adapter->rx_int_delay,
434 E1000_REGISTER(&adapter->hw, E1000_RDTR), lem_rx_int_delay_dflt);
435 lem_add_int_delay_sysctl(adapter, "tx_int_delay",
436 "transmit interrupt delay in usecs", &adapter->tx_int_delay,
437 E1000_REGISTER(&adapter->hw, E1000_TIDV), lem_tx_int_delay_dflt);
438 if (adapter->hw.mac.type >= e1000_82540) {
439 lem_add_int_delay_sysctl(adapter, "rx_abs_int_delay",
440 "receive interrupt delay limit in usecs",
441 &adapter->rx_abs_int_delay,
442 E1000_REGISTER(&adapter->hw, E1000_RADV),
443 lem_rx_abs_int_delay_dflt);
444 lem_add_int_delay_sysctl(adapter, "tx_abs_int_delay",
445 "transmit interrupt delay limit in usecs",
446 &adapter->tx_abs_int_delay,
447 E1000_REGISTER(&adapter->hw, E1000_TADV),
448 lem_tx_abs_int_delay_dflt);
449 lem_add_int_delay_sysctl(adapter, "itr",
450 "interrupt delay limit in usecs/4",
452 E1000_REGISTER(&adapter->hw, E1000_ITR),
456 /* Sysctls for limiting the amount of work done in the taskqueue */
457 lem_add_rx_process_limit(adapter, "rx_processing_limit",
458 "max number of rx packets to process", &adapter->rx_process_limit,
459 lem_rx_process_limit);
461 /* Sysctl for setting the interface flow control */
462 lem_set_flow_cntrl(adapter, "flow_control",
463 "flow control setting",
464 &adapter->fc_setting, lem_fc_setting);
467 * Validate number of transmit and receive descriptors. It
468 * must not exceed hardware maximum, and must be multiple
469 * of E1000_DBA_ALIGN.
471 if (((lem_txd * sizeof(struct e1000_tx_desc)) % EM_DBA_ALIGN) != 0 ||
472 (adapter->hw.mac.type >= e1000_82544 && lem_txd > EM_MAX_TXD) ||
473 (adapter->hw.mac.type < e1000_82544 && lem_txd > EM_MAX_TXD_82543) ||
474 (lem_txd < EM_MIN_TXD)) {
475 device_printf(dev, "Using %d TX descriptors instead of %d!\n",
476 EM_DEFAULT_TXD, lem_txd);
477 adapter->num_tx_desc = EM_DEFAULT_TXD;
479 adapter->num_tx_desc = lem_txd;
480 if (((lem_rxd * sizeof(struct e1000_rx_desc)) % EM_DBA_ALIGN) != 0 ||
481 (adapter->hw.mac.type >= e1000_82544 && lem_rxd > EM_MAX_RXD) ||
482 (adapter->hw.mac.type < e1000_82544 && lem_rxd > EM_MAX_RXD_82543) ||
483 (lem_rxd < EM_MIN_RXD)) {
484 device_printf(dev, "Using %d RX descriptors instead of %d!\n",
485 EM_DEFAULT_RXD, lem_rxd);
486 adapter->num_rx_desc = EM_DEFAULT_RXD;
488 adapter->num_rx_desc = lem_rxd;
490 adapter->hw.mac.autoneg = DO_AUTO_NEG;
491 adapter->hw.phy.autoneg_wait_to_complete = FALSE;
492 adapter->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT;
493 adapter->rx_buffer_len = 2048;
495 e1000_init_script_state_82541(&adapter->hw, TRUE);
496 e1000_set_tbi_compatibility_82543(&adapter->hw, TRUE);
499 if (adapter->hw.phy.media_type == e1000_media_type_copper) {
500 adapter->hw.phy.mdix = AUTO_ALL_MODES;
501 adapter->hw.phy.disable_polarity_correction = FALSE;
502 adapter->hw.phy.ms_type = EM_MASTER_SLAVE;
506 * Set the frame limits assuming
507 * standard ethernet sized frames.
509 adapter->max_frame_size = ETHERMTU + ETHER_HDR_LEN + ETHERNET_FCS_SIZE;
510 adapter->min_frame_size = ETH_ZLEN + ETHERNET_FCS_SIZE;
513 * This controls when hardware reports transmit completion
516 adapter->hw.mac.report_tx_early = 1;
518 tsize = roundup2(adapter->num_tx_desc * sizeof(struct e1000_tx_desc),
521 /* Allocate Transmit Descriptor ring */
522 if (lem_dma_malloc(adapter, tsize, &adapter->txdma, BUS_DMA_NOWAIT)) {
523 device_printf(dev, "Unable to allocate tx_desc memory\n");
527 adapter->tx_desc_base =
528 (struct e1000_tx_desc *)adapter->txdma.dma_vaddr;
530 rsize = roundup2(adapter->num_rx_desc * sizeof(struct e1000_rx_desc),
533 /* Allocate Receive Descriptor ring */
534 if (lem_dma_malloc(adapter, rsize, &adapter->rxdma, BUS_DMA_NOWAIT)) {
535 device_printf(dev, "Unable to allocate rx_desc memory\n");
539 adapter->rx_desc_base =
540 (struct e1000_rx_desc *)adapter->rxdma.dma_vaddr;
542 /* Allocate multicast array memory. */
543 adapter->mta = malloc(sizeof(u8) * ETH_ADDR_LEN *
544 MAX_NUM_MULTICAST_ADDRESSES, M_DEVBUF, M_NOWAIT);
545 if (adapter->mta == NULL) {
546 device_printf(dev, "Can not allocate multicast setup array\n");
552 ** Start from a known state, this is
553 ** important in reading the nvm and
556 e1000_reset_hw(&adapter->hw);
558 /* Make sure we have a good EEPROM before we read from it */
559 if (e1000_validate_nvm_checksum(&adapter->hw) < 0) {
561 ** Some PCI-E parts fail the first check due to
562 ** the link being in sleep state, call it again,
563 ** if it fails a second time its a real issue.
565 if (e1000_validate_nvm_checksum(&adapter->hw) < 0) {
567 "The EEPROM Checksum Is Not Valid\n");
573 /* Copy the permanent MAC address out of the EEPROM */
574 if (e1000_read_mac_addr(&adapter->hw) < 0) {
575 device_printf(dev, "EEPROM read error while reading MAC"
581 if (!lem_is_valid_ether_addr(adapter->hw.mac.addr)) {
582 device_printf(dev, "Invalid MAC address\n");
587 /* Initialize the hardware */
588 if (lem_hardware_init(adapter)) {
589 device_printf(dev, "Unable to initialize the hardware\n");
594 /* Allocate transmit descriptors and buffers */
595 if (lem_allocate_transmit_structures(adapter)) {
596 device_printf(dev, "Could not setup transmit structures\n");
601 /* Allocate receive descriptors and buffers */
602 if (lem_allocate_receive_structures(adapter)) {
603 device_printf(dev, "Could not setup receive structures\n");
609 ** Do interrupt configuration
611 error = lem_allocate_irq(adapter);
616 * Get Wake-on-Lan and Management info for later use
620 /* Setup OS specific network interface */
621 if (lem_setup_interface(dev, adapter) != 0)
624 /* Initialize statistics */
625 lem_update_stats_counters(adapter);
627 adapter->hw.mac.get_link_status = 1;
628 lem_update_link_status(adapter);
630 /* Indicate SOL/IDER usage */
631 if (e1000_check_reset_block(&adapter->hw))
633 "PHY reset is blocked due to SOL/IDER session.\n");
635 /* Do we need workaround for 82544 PCI-X adapter? */
636 if (adapter->hw.bus.type == e1000_bus_type_pcix &&
637 adapter->hw.mac.type == e1000_82544)
638 adapter->pcix_82544 = TRUE;
640 adapter->pcix_82544 = FALSE;
642 /* Register for VLAN events */
643 adapter->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
644 lem_register_vlan, adapter, EVENTHANDLER_PRI_FIRST);
645 adapter->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
646 lem_unregister_vlan, adapter, EVENTHANDLER_PRI_FIRST);
648 lem_add_hw_stats(adapter);
650 /* Non-AMT based hardware can now take control from firmware */
651 if (adapter->has_manage && !adapter->has_amt)
652 lem_get_hw_control(adapter);
654 /* Tell the stack that the interface is not active */
655 adapter->ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
657 adapter->led_dev = led_create(lem_led_func, adapter,
658 device_get_nameunit(dev));
661 lem_netmap_attach(adapter);
662 #endif /* DEV_NETMAP */
663 INIT_DEBUGOUT("lem_attach: end");
668 lem_free_transmit_structures(adapter);
671 lem_release_hw_control(adapter);
672 lem_dma_free(adapter, &adapter->rxdma);
674 lem_dma_free(adapter, &adapter->txdma);
677 if (adapter->ifp != NULL)
678 if_free(adapter->ifp);
679 lem_free_pci_resources(adapter);
680 free(adapter->mta, M_DEVBUF);
681 EM_TX_LOCK_DESTROY(adapter);
682 EM_RX_LOCK_DESTROY(adapter);
683 EM_CORE_LOCK_DESTROY(adapter);
688 /*********************************************************************
689 * Device removal routine
691 * The detach entry point is called when the driver is being removed.
692 * This routine stops the adapter and deallocates all the resources
693 * that were allocated for driver operation.
695 * return 0 on success, positive on failure
696 *********************************************************************/
699 lem_detach(device_t dev)
701 struct adapter *adapter = device_get_softc(dev);
702 struct ifnet *ifp = adapter->ifp;
704 INIT_DEBUGOUT("em_detach: begin");
706 /* Make sure VLANS are not using driver */
707 if (adapter->ifp->if_vlantrunk != NULL) {
708 device_printf(dev,"Vlan in use, detach first\n");
712 #ifdef DEVICE_POLLING
713 if (ifp->if_capenable & IFCAP_POLLING)
714 ether_poll_deregister(ifp);
717 if (adapter->led_dev != NULL)
718 led_destroy(adapter->led_dev);
720 EM_CORE_LOCK(adapter);
722 adapter->in_detach = 1;
724 e1000_phy_hw_reset(&adapter->hw);
726 lem_release_manageability(adapter);
728 EM_TX_UNLOCK(adapter);
729 EM_CORE_UNLOCK(adapter);
731 /* Unregister VLAN events */
732 if (adapter->vlan_attach != NULL)
733 EVENTHANDLER_DEREGISTER(vlan_config, adapter->vlan_attach);
734 if (adapter->vlan_detach != NULL)
735 EVENTHANDLER_DEREGISTER(vlan_unconfig, adapter->vlan_detach);
737 ether_ifdetach(adapter->ifp);
738 callout_drain(&adapter->timer);
739 callout_drain(&adapter->tx_fifo_timer);
743 #endif /* DEV_NETMAP */
744 lem_free_pci_resources(adapter);
745 bus_generic_detach(dev);
748 lem_free_transmit_structures(adapter);
749 lem_free_receive_structures(adapter);
751 /* Free Transmit Descriptor ring */
752 if (adapter->tx_desc_base) {
753 lem_dma_free(adapter, &adapter->txdma);
754 adapter->tx_desc_base = NULL;
757 /* Free Receive Descriptor ring */
758 if (adapter->rx_desc_base) {
759 lem_dma_free(adapter, &adapter->rxdma);
760 adapter->rx_desc_base = NULL;
763 lem_release_hw_control(adapter);
764 free(adapter->mta, M_DEVBUF);
765 EM_TX_LOCK_DESTROY(adapter);
766 EM_RX_LOCK_DESTROY(adapter);
767 EM_CORE_LOCK_DESTROY(adapter);
772 /*********************************************************************
774 * Shutdown entry point
776 **********************************************************************/
779 lem_shutdown(device_t dev)
781 return lem_suspend(dev);
785 * Suspend/resume device methods.
788 lem_suspend(device_t dev)
790 struct adapter *adapter = device_get_softc(dev);
792 EM_CORE_LOCK(adapter);
794 lem_release_manageability(adapter);
795 lem_release_hw_control(adapter);
796 lem_enable_wakeup(dev);
798 EM_CORE_UNLOCK(adapter);
800 return bus_generic_suspend(dev);
804 lem_resume(device_t dev)
806 struct adapter *adapter = device_get_softc(dev);
807 struct ifnet *ifp = adapter->ifp;
809 EM_CORE_LOCK(adapter);
810 lem_init_locked(adapter);
811 lem_init_manageability(adapter);
812 EM_CORE_UNLOCK(adapter);
815 return bus_generic_resume(dev);
820 lem_start_locked(struct ifnet *ifp)
822 struct adapter *adapter = ifp->if_softc;
825 EM_TX_LOCK_ASSERT(adapter);
827 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING|IFF_DRV_OACTIVE)) !=
830 if (!adapter->link_active)
834 * Force a cleanup if number of TX descriptors
835 * available hits the threshold
837 if (adapter->num_tx_desc_avail <= EM_TX_CLEANUP_THRESHOLD) {
839 /* Now do we at least have a minimal? */
840 if (adapter->num_tx_desc_avail <= EM_TX_OP_THRESHOLD) {
841 adapter->no_tx_desc_avail1++;
846 while (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) {
848 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head);
852 * Encapsulation can modify our pointer, and or make it
853 * NULL on failure. In that event, we can't requeue.
855 if (lem_xmit(adapter, &m_head)) {
858 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
859 IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
863 /* Send a copy of the frame to the BPF listener */
864 ETHER_BPF_MTAP(ifp, m_head);
866 /* Set timeout in case hardware has problems transmitting. */
867 adapter->watchdog_check = TRUE;
868 adapter->watchdog_time = ticks;
870 if (adapter->num_tx_desc_avail <= EM_TX_OP_THRESHOLD)
871 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
877 lem_start(struct ifnet *ifp)
879 struct adapter *adapter = ifp->if_softc;
882 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
883 lem_start_locked(ifp);
884 EM_TX_UNLOCK(adapter);
887 /*********************************************************************
890 * em_ioctl is called when the user wants to configure the
893 * return 0 on success, positive on failure
894 **********************************************************************/
897 lem_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
899 struct adapter *adapter = ifp->if_softc;
900 struct ifreq *ifr = (struct ifreq *)data;
901 #if defined(INET) || defined(INET6)
902 struct ifaddr *ifa = (struct ifaddr *)data;
904 bool avoid_reset = FALSE;
907 if (adapter->in_detach)
913 if (ifa->ifa_addr->sa_family == AF_INET)
917 if (ifa->ifa_addr->sa_family == AF_INET6)
921 ** Calling init results in link renegotiation,
922 ** so we avoid doing it when possible.
925 ifp->if_flags |= IFF_UP;
926 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
929 if (!(ifp->if_flags & IFF_NOARP))
930 arp_ifinit(ifp, ifa);
933 error = ether_ioctl(ifp, command, data);
939 IOCTL_DEBUGOUT("ioctl rcv'd: SIOCSIFMTU (Set Interface MTU)");
941 EM_CORE_LOCK(adapter);
942 switch (adapter->hw.mac.type) {
944 max_frame_size = ETHER_MAX_LEN;
947 max_frame_size = MAX_JUMBO_FRAME_SIZE;
949 if (ifr->ifr_mtu > max_frame_size - ETHER_HDR_LEN -
951 EM_CORE_UNLOCK(adapter);
956 ifp->if_mtu = ifr->ifr_mtu;
957 adapter->max_frame_size =
958 ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
959 lem_init_locked(adapter);
960 EM_CORE_UNLOCK(adapter);
964 IOCTL_DEBUGOUT("ioctl rcv'd:\
965 SIOCSIFFLAGS (Set Interface Flags)");
966 EM_CORE_LOCK(adapter);
967 if (ifp->if_flags & IFF_UP) {
968 if ((ifp->if_drv_flags & IFF_DRV_RUNNING)) {
969 if ((ifp->if_flags ^ adapter->if_flags) &
970 (IFF_PROMISC | IFF_ALLMULTI)) {
971 lem_disable_promisc(adapter);
972 lem_set_promisc(adapter);
975 lem_init_locked(adapter);
977 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
980 EM_TX_UNLOCK(adapter);
982 adapter->if_flags = ifp->if_flags;
983 EM_CORE_UNLOCK(adapter);
987 IOCTL_DEBUGOUT("ioctl rcv'd: SIOC(ADD|DEL)MULTI");
988 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
989 EM_CORE_LOCK(adapter);
990 lem_disable_intr(adapter);
991 lem_set_multi(adapter);
992 if (adapter->hw.mac.type == e1000_82542 &&
993 adapter->hw.revision_id == E1000_REVISION_2) {
994 lem_initialize_receive_unit(adapter);
996 #ifdef DEVICE_POLLING
997 if (!(ifp->if_capenable & IFCAP_POLLING))
999 lem_enable_intr(adapter);
1000 EM_CORE_UNLOCK(adapter);
1004 /* Check SOL/IDER usage */
1005 EM_CORE_LOCK(adapter);
1006 if (e1000_check_reset_block(&adapter->hw)) {
1007 EM_CORE_UNLOCK(adapter);
1008 device_printf(adapter->dev, "Media change is"
1009 " blocked due to SOL/IDER session.\n");
1012 EM_CORE_UNLOCK(adapter);
1014 IOCTL_DEBUGOUT("ioctl rcv'd: \
1015 SIOCxIFMEDIA (Get/Set Interface Media)");
1016 error = ifmedia_ioctl(ifp, ifr, &adapter->media, command);
1022 IOCTL_DEBUGOUT("ioctl rcv'd: SIOCSIFCAP (Set Capabilities)");
1024 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
1025 #ifdef DEVICE_POLLING
1026 if (mask & IFCAP_POLLING) {
1027 if (ifr->ifr_reqcap & IFCAP_POLLING) {
1028 error = ether_poll_register(lem_poll, ifp);
1031 EM_CORE_LOCK(adapter);
1032 lem_disable_intr(adapter);
1033 ifp->if_capenable |= IFCAP_POLLING;
1034 EM_CORE_UNLOCK(adapter);
1036 error = ether_poll_deregister(ifp);
1037 /* Enable interrupt even in error case */
1038 EM_CORE_LOCK(adapter);
1039 lem_enable_intr(adapter);
1040 ifp->if_capenable &= ~IFCAP_POLLING;
1041 EM_CORE_UNLOCK(adapter);
1045 if (mask & IFCAP_HWCSUM) {
1046 ifp->if_capenable ^= IFCAP_HWCSUM;
1049 if (mask & IFCAP_VLAN_HWTAGGING) {
1050 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
1053 if ((mask & IFCAP_WOL) &&
1054 (ifp->if_capabilities & IFCAP_WOL) != 0) {
1055 if (mask & IFCAP_WOL_MCAST)
1056 ifp->if_capenable ^= IFCAP_WOL_MCAST;
1057 if (mask & IFCAP_WOL_MAGIC)
1058 ifp->if_capenable ^= IFCAP_WOL_MAGIC;
1060 if (reinit && (ifp->if_drv_flags & IFF_DRV_RUNNING))
1062 VLAN_CAPABILITIES(ifp);
1067 error = ether_ioctl(ifp, command, data);
1075 /*********************************************************************
1078 * This routine is used in two ways. It is used by the stack as
1079 * init entry point in network interface structure. It is also used
1080 * by the driver as a hw/sw initialization routine to get to a
1083 * return 0 on success, positive on failure
1084 **********************************************************************/
1087 lem_init_locked(struct adapter *adapter)
1089 struct ifnet *ifp = adapter->ifp;
1090 device_t dev = adapter->dev;
1093 INIT_DEBUGOUT("lem_init: begin");
1095 EM_CORE_LOCK_ASSERT(adapter);
1097 EM_TX_LOCK(adapter);
1099 EM_TX_UNLOCK(adapter);
1102 * Packet Buffer Allocation (PBA)
1103 * Writing PBA sets the receive portion of the buffer
1104 * the remainder is used for the transmit buffer.
1106 * Devices before the 82547 had a Packet Buffer of 64K.
1107 * Default allocation: PBA=48K for Rx, leaving 16K for Tx.
1108 * After the 82547 the buffer was reduced to 40K.
1109 * Default allocation: PBA=30K for Rx, leaving 10K for Tx.
1110 * Note: default does not leave enough room for Jumbo Frame >10k.
1112 switch (adapter->hw.mac.type) {
1114 case e1000_82547_rev_2: /* 82547: Total Packet Buffer is 40K */
1115 if (adapter->max_frame_size > 8192)
1116 pba = E1000_PBA_22K; /* 22K for Rx, 18K for Tx */
1118 pba = E1000_PBA_30K; /* 30K for Rx, 10K for Tx */
1119 adapter->tx_fifo_head = 0;
1120 adapter->tx_head_addr = pba << EM_TX_HEAD_ADDR_SHIFT;
1121 adapter->tx_fifo_size =
1122 (E1000_PBA_40K - pba) << EM_PBA_BYTES_SHIFT;
1125 /* Devices before 82547 had a Packet Buffer of 64K. */
1126 if (adapter->max_frame_size > 8192)
1127 pba = E1000_PBA_40K; /* 40K for Rx, 24K for Tx */
1129 pba = E1000_PBA_48K; /* 48K for Rx, 16K for Tx */
1132 INIT_DEBUGOUT1("lem_init: pba=%dK",pba);
1133 E1000_WRITE_REG(&adapter->hw, E1000_PBA, pba);
1135 /* Get the latest mac address, User can use a LAA */
1136 bcopy(IF_LLADDR(adapter->ifp), adapter->hw.mac.addr,
1139 /* Put the address into the Receive Address Array */
1140 e1000_rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
1142 /* Initialize the hardware */
1143 if (lem_hardware_init(adapter)) {
1144 device_printf(dev, "Unable to initialize the hardware\n");
1147 lem_update_link_status(adapter);
1149 /* Setup VLAN support, basic and offload if available */
1150 E1000_WRITE_REG(&adapter->hw, E1000_VET, ETHERTYPE_VLAN);
1152 /* Set hardware offload abilities */
1153 ifp->if_hwassist = 0;
1154 if (adapter->hw.mac.type >= e1000_82543) {
1155 if (ifp->if_capenable & IFCAP_TXCSUM)
1156 ifp->if_hwassist |= (CSUM_TCP | CSUM_UDP);
1159 /* Configure for OS presence */
1160 lem_init_manageability(adapter);
1162 /* Prepare transmit descriptors and buffers */
1163 lem_setup_transmit_structures(adapter);
1164 lem_initialize_transmit_unit(adapter);
1166 /* Setup Multicast table */
1167 lem_set_multi(adapter);
1169 /* Prepare receive descriptors and buffers */
1170 if (lem_setup_receive_structures(adapter)) {
1171 device_printf(dev, "Could not setup receive structures\n");
1172 EM_TX_LOCK(adapter);
1174 EM_TX_UNLOCK(adapter);
1177 lem_initialize_receive_unit(adapter);
1179 /* Use real VLAN Filter support? */
1180 if (ifp->if_capenable & IFCAP_VLAN_HWTAGGING) {
1181 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER)
1182 /* Use real VLAN Filter support */
1183 lem_setup_vlan_hw_support(adapter);
1186 ctrl = E1000_READ_REG(&adapter->hw, E1000_CTRL);
1187 ctrl |= E1000_CTRL_VME;
1188 E1000_WRITE_REG(&adapter->hw, E1000_CTRL, ctrl);
1192 /* Don't lose promiscuous settings */
1193 lem_set_promisc(adapter);
1195 ifp->if_drv_flags |= IFF_DRV_RUNNING;
1196 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1198 callout_reset(&adapter->timer, hz, lem_local_timer, adapter);
1199 e1000_clear_hw_cntrs_base_generic(&adapter->hw);
1201 #ifdef DEVICE_POLLING
1203 * Only enable interrupts if we are not polling, make sure
1204 * they are off otherwise.
1206 if (ifp->if_capenable & IFCAP_POLLING)
1207 lem_disable_intr(adapter);
1209 #endif /* DEVICE_POLLING */
1210 lem_enable_intr(adapter);
1212 /* AMT based hardware can now take control from firmware */
1213 if (adapter->has_manage && adapter->has_amt)
1214 lem_get_hw_control(adapter);
1220 struct adapter *adapter = arg;
1222 EM_CORE_LOCK(adapter);
1223 lem_init_locked(adapter);
1224 EM_CORE_UNLOCK(adapter);
1228 #ifdef DEVICE_POLLING
1229 /*********************************************************************
1231 * Legacy polling routine
1233 *********************************************************************/
1235 lem_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
1237 struct adapter *adapter = ifp->if_softc;
1238 u32 reg_icr, rx_done = 0;
1240 EM_CORE_LOCK(adapter);
1241 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1242 EM_CORE_UNLOCK(adapter);
1246 if (cmd == POLL_AND_CHECK_STATUS) {
1247 reg_icr = E1000_READ_REG(&adapter->hw, E1000_ICR);
1248 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
1249 callout_stop(&adapter->timer);
1250 adapter->hw.mac.get_link_status = 1;
1251 lem_update_link_status(adapter);
1252 callout_reset(&adapter->timer, hz,
1253 lem_local_timer, adapter);
1256 EM_CORE_UNLOCK(adapter);
1258 lem_rxeof(adapter, count, &rx_done);
1260 EM_TX_LOCK(adapter);
1262 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
1263 lem_start_locked(ifp);
1264 EM_TX_UNLOCK(adapter);
1267 #endif /* DEVICE_POLLING */
1269 /*********************************************************************
1271 * Legacy Interrupt Service routine
1273 *********************************************************************/
1277 struct adapter *adapter = arg;
1278 struct ifnet *ifp = adapter->ifp;
1282 if ((ifp->if_capenable & IFCAP_POLLING) ||
1283 ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0))
1286 EM_CORE_LOCK(adapter);
1287 reg_icr = E1000_READ_REG(&adapter->hw, E1000_ICR);
1288 if (reg_icr & E1000_ICR_RXO)
1289 adapter->rx_overruns++;
1291 if ((reg_icr == 0xffffffff) || (reg_icr == 0)) {
1292 EM_CORE_UNLOCK(adapter);
1296 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
1297 callout_stop(&adapter->timer);
1298 adapter->hw.mac.get_link_status = 1;
1299 lem_update_link_status(adapter);
1300 /* Deal with TX cruft when link lost */
1301 lem_tx_purge(adapter);
1302 callout_reset(&adapter->timer, hz,
1303 lem_local_timer, adapter);
1304 EM_CORE_UNLOCK(adapter);
1308 EM_CORE_UNLOCK(adapter);
1309 lem_rxeof(adapter, -1, NULL);
1311 EM_TX_LOCK(adapter);
1313 if (ifp->if_drv_flags & IFF_DRV_RUNNING &&
1314 !IFQ_DRV_IS_EMPTY(&ifp->if_snd))
1315 lem_start_locked(ifp);
1316 EM_TX_UNLOCK(adapter);
1322 lem_handle_link(void *context, int pending)
1324 struct adapter *adapter = context;
1325 struct ifnet *ifp = adapter->ifp;
1327 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
1330 EM_CORE_LOCK(adapter);
1331 callout_stop(&adapter->timer);
1332 lem_update_link_status(adapter);
1333 /* Deal with TX cruft when link lost */
1334 lem_tx_purge(adapter);
1335 callout_reset(&adapter->timer, hz, lem_local_timer, adapter);
1336 EM_CORE_UNLOCK(adapter);
1340 /* Combined RX/TX handler, used by Legacy and MSI */
1342 lem_handle_rxtx(void *context, int pending)
1344 struct adapter *adapter = context;
1345 struct ifnet *ifp = adapter->ifp;
1348 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1349 bool more = lem_rxeof(adapter, adapter->rx_process_limit, NULL);
1350 EM_TX_LOCK(adapter);
1352 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
1353 lem_start_locked(ifp);
1354 EM_TX_UNLOCK(adapter);
1356 taskqueue_enqueue(adapter->tq, &adapter->rxtx_task);
1361 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1362 lem_enable_intr(adapter);
1365 /*********************************************************************
1367 * Fast Legacy/MSI Combined Interrupt Service routine
1369 *********************************************************************/
1371 lem_irq_fast(void *arg)
1373 struct adapter *adapter = arg;
1379 reg_icr = E1000_READ_REG(&adapter->hw, E1000_ICR);
1382 if (reg_icr == 0xffffffff)
1383 return FILTER_STRAY;
1385 /* Definitely not our interrupt. */
1387 return FILTER_STRAY;
1390 * Mask interrupts until the taskqueue is finished running. This is
1391 * cheap, just assume that it is needed. This also works around the
1392 * MSI message reordering errata on certain systems.
1394 lem_disable_intr(adapter);
1395 taskqueue_enqueue(adapter->tq, &adapter->rxtx_task);
1397 /* Link status change */
1398 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
1399 adapter->hw.mac.get_link_status = 1;
1400 taskqueue_enqueue(taskqueue_fast, &adapter->link_task);
1403 if (reg_icr & E1000_ICR_RXO)
1404 adapter->rx_overruns++;
1405 return FILTER_HANDLED;
1409 /*********************************************************************
1411 * Media Ioctl callback
1413 * This routine is called whenever the user queries the status of
1414 * the interface using ifconfig.
1416 **********************************************************************/
1418 lem_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
1420 struct adapter *adapter = ifp->if_softc;
1421 u_char fiber_type = IFM_1000_SX;
1423 INIT_DEBUGOUT("lem_media_status: begin");
1425 EM_CORE_LOCK(adapter);
1426 lem_update_link_status(adapter);
1428 ifmr->ifm_status = IFM_AVALID;
1429 ifmr->ifm_active = IFM_ETHER;
1431 if (!adapter->link_active) {
1432 EM_CORE_UNLOCK(adapter);
1436 ifmr->ifm_status |= IFM_ACTIVE;
1438 if ((adapter->hw.phy.media_type == e1000_media_type_fiber) ||
1439 (adapter->hw.phy.media_type == e1000_media_type_internal_serdes)) {
1440 if (adapter->hw.mac.type == e1000_82545)
1441 fiber_type = IFM_1000_LX;
1442 ifmr->ifm_active |= fiber_type | IFM_FDX;
1444 switch (adapter->link_speed) {
1446 ifmr->ifm_active |= IFM_10_T;
1449 ifmr->ifm_active |= IFM_100_TX;
1452 ifmr->ifm_active |= IFM_1000_T;
1455 if (adapter->link_duplex == FULL_DUPLEX)
1456 ifmr->ifm_active |= IFM_FDX;
1458 ifmr->ifm_active |= IFM_HDX;
1460 EM_CORE_UNLOCK(adapter);
1463 /*********************************************************************
1465 * Media Ioctl callback
1467 * This routine is called when the user changes speed/duplex using
1468 * media/mediopt option with ifconfig.
1470 **********************************************************************/
1472 lem_media_change(struct ifnet *ifp)
1474 struct adapter *adapter = ifp->if_softc;
1475 struct ifmedia *ifm = &adapter->media;
1477 INIT_DEBUGOUT("lem_media_change: begin");
1479 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1482 EM_CORE_LOCK(adapter);
1483 switch (IFM_SUBTYPE(ifm->ifm_media)) {
1485 adapter->hw.mac.autoneg = DO_AUTO_NEG;
1486 adapter->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT;
1491 adapter->hw.mac.autoneg = DO_AUTO_NEG;
1492 adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;
1495 adapter->hw.mac.autoneg = FALSE;
1496 adapter->hw.phy.autoneg_advertised = 0;
1497 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX)
1498 adapter->hw.mac.forced_speed_duplex = ADVERTISE_100_FULL;
1500 adapter->hw.mac.forced_speed_duplex = ADVERTISE_100_HALF;
1503 adapter->hw.mac.autoneg = FALSE;
1504 adapter->hw.phy.autoneg_advertised = 0;
1505 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX)
1506 adapter->hw.mac.forced_speed_duplex = ADVERTISE_10_FULL;
1508 adapter->hw.mac.forced_speed_duplex = ADVERTISE_10_HALF;
1511 device_printf(adapter->dev, "Unsupported media type\n");
1514 lem_init_locked(adapter);
1515 EM_CORE_UNLOCK(adapter);
1520 /*********************************************************************
1522 * This routine maps the mbufs to tx descriptors.
1524 * return 0 on success, positive on failure
1525 **********************************************************************/
1528 lem_xmit(struct adapter *adapter, struct mbuf **m_headp)
1530 bus_dma_segment_t segs[EM_MAX_SCATTER];
1532 struct em_buffer *tx_buffer, *tx_buffer_mapped;
1533 struct e1000_tx_desc *ctxd = NULL;
1534 struct mbuf *m_head;
1535 u32 txd_upper, txd_lower, txd_used, txd_saved;
1536 int error, nsegs, i, j, first, last = 0;
1539 txd_upper = txd_lower = txd_used = txd_saved = 0;
1542 ** When doing checksum offload, it is critical to
1543 ** make sure the first mbuf has more than header,
1544 ** because that routine expects data to be present.
1546 if ((m_head->m_pkthdr.csum_flags & CSUM_OFFLOAD) &&
1547 (m_head->m_len < ETHER_HDR_LEN + sizeof(struct ip))) {
1548 m_head = m_pullup(m_head, ETHER_HDR_LEN + sizeof(struct ip));
1555 * Map the packet for DMA
1557 * Capture the first descriptor index,
1558 * this descriptor will have the index
1559 * of the EOP which is the only one that
1560 * now gets a DONE bit writeback.
1562 first = adapter->next_avail_tx_desc;
1563 tx_buffer = &adapter->tx_buffer_area[first];
1564 tx_buffer_mapped = tx_buffer;
1565 map = tx_buffer->map;
1567 error = bus_dmamap_load_mbuf_sg(adapter->txtag, map,
1568 *m_headp, segs, &nsegs, BUS_DMA_NOWAIT);
1571 * There are two types of errors we can (try) to handle:
1572 * - EFBIG means the mbuf chain was too long and bus_dma ran
1573 * out of segments. Defragment the mbuf chain and try again.
1574 * - ENOMEM means bus_dma could not obtain enough bounce buffers
1575 * at this point in time. Defer sending and try again later.
1576 * All other errors, in particular EINVAL, are fatal and prevent the
1577 * mbuf chain from ever going through. Drop it and report error.
1579 if (error == EFBIG) {
1582 m = m_defrag(*m_headp, M_NOWAIT);
1584 adapter->mbuf_alloc_failed++;
1592 error = bus_dmamap_load_mbuf_sg(adapter->txtag, map,
1593 *m_headp, segs, &nsegs, BUS_DMA_NOWAIT);
1596 adapter->no_tx_dma_setup++;
1601 } else if (error != 0) {
1602 adapter->no_tx_dma_setup++;
1606 if (nsegs > (adapter->num_tx_desc_avail - 2)) {
1607 adapter->no_tx_desc_avail2++;
1608 bus_dmamap_unload(adapter->txtag, map);
1613 /* Do hardware assists */
1614 if (m_head->m_pkthdr.csum_flags & CSUM_OFFLOAD)
1615 lem_transmit_checksum_setup(adapter, m_head,
1616 &txd_upper, &txd_lower);
1618 i = adapter->next_avail_tx_desc;
1619 if (adapter->pcix_82544)
1622 /* Set up our transmit descriptors */
1623 for (j = 0; j < nsegs; j++) {
1625 bus_addr_t seg_addr;
1626 /* If adapter is 82544 and on PCIX bus */
1627 if(adapter->pcix_82544) {
1628 DESC_ARRAY desc_array;
1629 u32 array_elements, counter;
1631 * Check the Address and Length combination and
1632 * split the data accordingly
1634 array_elements = lem_fill_descriptors(segs[j].ds_addr,
1635 segs[j].ds_len, &desc_array);
1636 for (counter = 0; counter < array_elements; counter++) {
1637 if (txd_used == adapter->num_tx_desc_avail) {
1638 adapter->next_avail_tx_desc = txd_saved;
1639 adapter->no_tx_desc_avail2++;
1640 bus_dmamap_unload(adapter->txtag, map);
1643 tx_buffer = &adapter->tx_buffer_area[i];
1644 ctxd = &adapter->tx_desc_base[i];
1645 ctxd->buffer_addr = htole64(
1646 desc_array.descriptor[counter].address);
1647 ctxd->lower.data = htole32(
1648 (adapter->txd_cmd | txd_lower | (u16)
1649 desc_array.descriptor[counter].length));
1651 htole32((txd_upper));
1653 if (++i == adapter->num_tx_desc)
1655 tx_buffer->m_head = NULL;
1656 tx_buffer->next_eop = -1;
1660 tx_buffer = &adapter->tx_buffer_area[i];
1661 ctxd = &adapter->tx_desc_base[i];
1662 seg_addr = segs[j].ds_addr;
1663 seg_len = segs[j].ds_len;
1664 ctxd->buffer_addr = htole64(seg_addr);
1665 ctxd->lower.data = htole32(
1666 adapter->txd_cmd | txd_lower | seg_len);
1670 if (++i == adapter->num_tx_desc)
1672 tx_buffer->m_head = NULL;
1673 tx_buffer->next_eop = -1;
1677 adapter->next_avail_tx_desc = i;
1679 if (adapter->pcix_82544)
1680 adapter->num_tx_desc_avail -= txd_used;
1682 adapter->num_tx_desc_avail -= nsegs;
1684 if (m_head->m_flags & M_VLANTAG) {
1685 /* Set the vlan id. */
1686 ctxd->upper.fields.special =
1687 htole16(m_head->m_pkthdr.ether_vtag);
1688 /* Tell hardware to add tag */
1689 ctxd->lower.data |= htole32(E1000_TXD_CMD_VLE);
1692 tx_buffer->m_head = m_head;
1693 tx_buffer_mapped->map = tx_buffer->map;
1694 tx_buffer->map = map;
1695 bus_dmamap_sync(adapter->txtag, map, BUS_DMASYNC_PREWRITE);
1698 * Last Descriptor of Packet
1699 * needs End Of Packet (EOP)
1700 * and Report Status (RS)
1703 htole32(E1000_TXD_CMD_EOP | E1000_TXD_CMD_RS);
1705 * Keep track in the first buffer which
1706 * descriptor will be written back
1708 tx_buffer = &adapter->tx_buffer_area[first];
1709 tx_buffer->next_eop = last;
1710 adapter->watchdog_time = ticks;
1713 * Advance the Transmit Descriptor Tail (TDT), this tells the E1000
1714 * that this frame is available to transmit.
1716 bus_dmamap_sync(adapter->txdma.dma_tag, adapter->txdma.dma_map,
1717 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1718 if (adapter->hw.mac.type == e1000_82547 &&
1719 adapter->link_duplex == HALF_DUPLEX)
1720 lem_82547_move_tail(adapter);
1722 E1000_WRITE_REG(&adapter->hw, E1000_TDT(0), i);
1723 if (adapter->hw.mac.type == e1000_82547)
1724 lem_82547_update_fifo_head(adapter,
1725 m_head->m_pkthdr.len);
1731 /*********************************************************************
1733 * 82547 workaround to avoid controller hang in half-duplex environment.
1734 * The workaround is to avoid queuing a large packet that would span
1735 * the internal Tx FIFO ring boundary. We need to reset the FIFO pointers
1736 * in this case. We do that only when FIFO is quiescent.
1738 **********************************************************************/
1740 lem_82547_move_tail(void *arg)
1742 struct adapter *adapter = arg;
1743 struct e1000_tx_desc *tx_desc;
1744 u16 hw_tdt, sw_tdt, length = 0;
1747 EM_TX_LOCK_ASSERT(adapter);
1749 hw_tdt = E1000_READ_REG(&adapter->hw, E1000_TDT(0));
1750 sw_tdt = adapter->next_avail_tx_desc;
1752 while (hw_tdt != sw_tdt) {
1753 tx_desc = &adapter->tx_desc_base[hw_tdt];
1754 length += tx_desc->lower.flags.length;
1755 eop = tx_desc->lower.data & E1000_TXD_CMD_EOP;
1756 if (++hw_tdt == adapter->num_tx_desc)
1760 if (lem_82547_fifo_workaround(adapter, length)) {
1761 adapter->tx_fifo_wrk_cnt++;
1762 callout_reset(&adapter->tx_fifo_timer, 1,
1763 lem_82547_move_tail, adapter);
1766 E1000_WRITE_REG(&adapter->hw, E1000_TDT(0), hw_tdt);
1767 lem_82547_update_fifo_head(adapter, length);
1774 lem_82547_fifo_workaround(struct adapter *adapter, int len)
1776 int fifo_space, fifo_pkt_len;
1778 fifo_pkt_len = roundup2(len + EM_FIFO_HDR, EM_FIFO_HDR);
1780 if (adapter->link_duplex == HALF_DUPLEX) {
1781 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head;
1783 if (fifo_pkt_len >= (EM_82547_PKT_THRESH + fifo_space)) {
1784 if (lem_82547_tx_fifo_reset(adapter))
1795 lem_82547_update_fifo_head(struct adapter *adapter, int len)
1797 int fifo_pkt_len = roundup2(len + EM_FIFO_HDR, EM_FIFO_HDR);
1799 /* tx_fifo_head is always 16 byte aligned */
1800 adapter->tx_fifo_head += fifo_pkt_len;
1801 if (adapter->tx_fifo_head >= adapter->tx_fifo_size) {
1802 adapter->tx_fifo_head -= adapter->tx_fifo_size;
1808 lem_82547_tx_fifo_reset(struct adapter *adapter)
1812 if ((E1000_READ_REG(&adapter->hw, E1000_TDT(0)) ==
1813 E1000_READ_REG(&adapter->hw, E1000_TDH(0))) &&
1814 (E1000_READ_REG(&adapter->hw, E1000_TDFT) ==
1815 E1000_READ_REG(&adapter->hw, E1000_TDFH)) &&
1816 (E1000_READ_REG(&adapter->hw, E1000_TDFTS) ==
1817 E1000_READ_REG(&adapter->hw, E1000_TDFHS)) &&
1818 (E1000_READ_REG(&adapter->hw, E1000_TDFPC) == 0)) {
1819 /* Disable TX unit */
1820 tctl = E1000_READ_REG(&adapter->hw, E1000_TCTL);
1821 E1000_WRITE_REG(&adapter->hw, E1000_TCTL,
1822 tctl & ~E1000_TCTL_EN);
1824 /* Reset FIFO pointers */
1825 E1000_WRITE_REG(&adapter->hw, E1000_TDFT,
1826 adapter->tx_head_addr);
1827 E1000_WRITE_REG(&adapter->hw, E1000_TDFH,
1828 adapter->tx_head_addr);
1829 E1000_WRITE_REG(&adapter->hw, E1000_TDFTS,
1830 adapter->tx_head_addr);
1831 E1000_WRITE_REG(&adapter->hw, E1000_TDFHS,
1832 adapter->tx_head_addr);
1834 /* Re-enable TX unit */
1835 E1000_WRITE_REG(&adapter->hw, E1000_TCTL, tctl);
1836 E1000_WRITE_FLUSH(&adapter->hw);
1838 adapter->tx_fifo_head = 0;
1839 adapter->tx_fifo_reset_cnt++;
1849 lem_set_promisc(struct adapter *adapter)
1851 struct ifnet *ifp = adapter->ifp;
1854 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL);
1856 if (ifp->if_flags & IFF_PROMISC) {
1857 reg_rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
1858 /* Turn this on if you want to see bad packets */
1860 reg_rctl |= E1000_RCTL_SBP;
1861 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl);
1862 } else if (ifp->if_flags & IFF_ALLMULTI) {
1863 reg_rctl |= E1000_RCTL_MPE;
1864 reg_rctl &= ~E1000_RCTL_UPE;
1865 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl);
1870 lem_disable_promisc(struct adapter *adapter)
1872 struct ifnet *ifp = adapter->ifp;
1876 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL);
1877 reg_rctl &= (~E1000_RCTL_UPE);
1878 if (ifp->if_flags & IFF_ALLMULTI)
1879 mcnt = MAX_NUM_MULTICAST_ADDRESSES;
1881 struct ifmultiaddr *ifma;
1882 #if __FreeBSD_version < 800000
1885 if_maddr_rlock(ifp);
1887 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1888 if (ifma->ifma_addr->sa_family != AF_LINK)
1890 if (mcnt == MAX_NUM_MULTICAST_ADDRESSES)
1894 #if __FreeBSD_version < 800000
1895 IF_ADDR_UNLOCK(ifp);
1897 if_maddr_runlock(ifp);
1900 /* Don't disable if in MAX groups */
1901 if (mcnt < MAX_NUM_MULTICAST_ADDRESSES)
1902 reg_rctl &= (~E1000_RCTL_MPE);
1903 reg_rctl &= (~E1000_RCTL_SBP);
1904 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl);
1908 /*********************************************************************
1911 * This routine is called whenever multicast address list is updated.
1913 **********************************************************************/
1916 lem_set_multi(struct adapter *adapter)
1918 struct ifnet *ifp = adapter->ifp;
1919 struct ifmultiaddr *ifma;
1921 u8 *mta; /* Multicast array memory */
1924 IOCTL_DEBUGOUT("lem_set_multi: begin");
1927 bzero(mta, sizeof(u8) * ETH_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES);
1929 if (adapter->hw.mac.type == e1000_82542 &&
1930 adapter->hw.revision_id == E1000_REVISION_2) {
1931 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL);
1932 if (adapter->hw.bus.pci_cmd_word & CMD_MEM_WRT_INVALIDATE)
1933 e1000_pci_clear_mwi(&adapter->hw);
1934 reg_rctl |= E1000_RCTL_RST;
1935 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl);
1939 #if __FreeBSD_version < 800000
1942 if_maddr_rlock(ifp);
1944 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1945 if (ifma->ifma_addr->sa_family != AF_LINK)
1948 if (mcnt == MAX_NUM_MULTICAST_ADDRESSES)
1951 bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
1952 &mta[mcnt * ETH_ADDR_LEN], ETH_ADDR_LEN);
1955 #if __FreeBSD_version < 800000
1956 IF_ADDR_UNLOCK(ifp);
1958 if_maddr_runlock(ifp);
1960 if (mcnt >= MAX_NUM_MULTICAST_ADDRESSES) {
1961 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL);
1962 reg_rctl |= E1000_RCTL_MPE;
1963 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl);
1965 e1000_update_mc_addr_list(&adapter->hw, mta, mcnt);
1967 if (adapter->hw.mac.type == e1000_82542 &&
1968 adapter->hw.revision_id == E1000_REVISION_2) {
1969 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL);
1970 reg_rctl &= ~E1000_RCTL_RST;
1971 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl);
1973 if (adapter->hw.bus.pci_cmd_word & CMD_MEM_WRT_INVALIDATE)
1974 e1000_pci_set_mwi(&adapter->hw);
1979 /*********************************************************************
1982 * This routine checks for link status and updates statistics.
1984 **********************************************************************/
1987 lem_local_timer(void *arg)
1989 struct adapter *adapter = arg;
1991 EM_CORE_LOCK_ASSERT(adapter);
1993 lem_update_link_status(adapter);
1994 lem_update_stats_counters(adapter);
1996 lem_smartspeed(adapter);
1999 * We check the watchdog: the time since
2000 * the last TX descriptor was cleaned.
2001 * This implies a functional TX engine.
2003 if ((adapter->watchdog_check == TRUE) &&
2004 (ticks - adapter->watchdog_time > EM_WATCHDOG))
2007 callout_reset(&adapter->timer, hz, lem_local_timer, adapter);
2010 device_printf(adapter->dev, "Watchdog timeout -- resetting\n");
2011 adapter->ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
2012 adapter->watchdog_events++;
2013 lem_init_locked(adapter);
2017 lem_update_link_status(struct adapter *adapter)
2019 struct e1000_hw *hw = &adapter->hw;
2020 struct ifnet *ifp = adapter->ifp;
2021 device_t dev = adapter->dev;
2024 /* Get the cached link value or read phy for real */
2025 switch (hw->phy.media_type) {
2026 case e1000_media_type_copper:
2027 if (hw->mac.get_link_status) {
2028 /* Do the work to read phy */
2029 e1000_check_for_link(hw);
2030 link_check = !hw->mac.get_link_status;
2031 if (link_check) /* ESB2 fix */
2032 e1000_cfg_on_link_up(hw);
2036 case e1000_media_type_fiber:
2037 e1000_check_for_link(hw);
2038 link_check = (E1000_READ_REG(hw, E1000_STATUS) &
2041 case e1000_media_type_internal_serdes:
2042 e1000_check_for_link(hw);
2043 link_check = adapter->hw.mac.serdes_has_link;
2046 case e1000_media_type_unknown:
2050 /* Now check for a transition */
2051 if (link_check && (adapter->link_active == 0)) {
2052 e1000_get_speed_and_duplex(hw, &adapter->link_speed,
2053 &adapter->link_duplex);
2055 device_printf(dev, "Link is up %d Mbps %s\n",
2056 adapter->link_speed,
2057 ((adapter->link_duplex == FULL_DUPLEX) ?
2058 "Full Duplex" : "Half Duplex"));
2059 adapter->link_active = 1;
2060 adapter->smartspeed = 0;
2061 ifp->if_baudrate = adapter->link_speed * 1000000;
2062 if_link_state_change(ifp, LINK_STATE_UP);
2063 } else if (!link_check && (adapter->link_active == 1)) {
2064 ifp->if_baudrate = adapter->link_speed = 0;
2065 adapter->link_duplex = 0;
2067 device_printf(dev, "Link is Down\n");
2068 adapter->link_active = 0;
2069 /* Link down, disable watchdog */
2070 adapter->watchdog_check = FALSE;
2071 if_link_state_change(ifp, LINK_STATE_DOWN);
2075 /*********************************************************************
2077 * This routine disables all traffic on the adapter by issuing a
2078 * global reset on the MAC and deallocates TX/RX buffers.
2080 * This routine should always be called with BOTH the CORE
2082 **********************************************************************/
2087 struct adapter *adapter = arg;
2088 struct ifnet *ifp = adapter->ifp;
2090 EM_CORE_LOCK_ASSERT(adapter);
2091 EM_TX_LOCK_ASSERT(adapter);
2093 INIT_DEBUGOUT("lem_stop: begin");
2095 lem_disable_intr(adapter);
2096 callout_stop(&adapter->timer);
2097 callout_stop(&adapter->tx_fifo_timer);
2099 /* Tell the stack that the interface is no longer active */
2100 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2102 e1000_reset_hw(&adapter->hw);
2103 if (adapter->hw.mac.type >= e1000_82544)
2104 E1000_WRITE_REG(&adapter->hw, E1000_WUC, 0);
2106 e1000_led_off(&adapter->hw);
2107 e1000_cleanup_led(&adapter->hw);
2111 /*********************************************************************
2113 * Determine hardware revision.
2115 **********************************************************************/
2117 lem_identify_hardware(struct adapter *adapter)
2119 device_t dev = adapter->dev;
2121 /* Make sure our PCI config space has the necessary stuff set */
2122 pci_enable_busmaster(dev);
2123 adapter->hw.bus.pci_cmd_word = pci_read_config(dev, PCIR_COMMAND, 2);
2125 /* Save off the information about this board */
2126 adapter->hw.vendor_id = pci_get_vendor(dev);
2127 adapter->hw.device_id = pci_get_device(dev);
2128 adapter->hw.revision_id = pci_read_config(dev, PCIR_REVID, 1);
2129 adapter->hw.subsystem_vendor_id =
2130 pci_read_config(dev, PCIR_SUBVEND_0, 2);
2131 adapter->hw.subsystem_device_id =
2132 pci_read_config(dev, PCIR_SUBDEV_0, 2);
2134 /* Do Shared Code Init and Setup */
2135 if (e1000_set_mac_type(&adapter->hw)) {
2136 device_printf(dev, "Setup init failure\n");
2142 lem_allocate_pci_resources(struct adapter *adapter)
2144 device_t dev = adapter->dev;
2145 int val, rid, error = E1000_SUCCESS;
2148 adapter->memory = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
2150 if (adapter->memory == NULL) {
2151 device_printf(dev, "Unable to allocate bus resource: memory\n");
2154 adapter->osdep.mem_bus_space_tag =
2155 rman_get_bustag(adapter->memory);
2156 adapter->osdep.mem_bus_space_handle =
2157 rman_get_bushandle(adapter->memory);
2158 adapter->hw.hw_addr = (u8 *)&adapter->osdep.mem_bus_space_handle;
2160 /* Only older adapters use IO mapping */
2161 if (adapter->hw.mac.type > e1000_82543) {
2162 /* Figure our where our IO BAR is ? */
2163 for (rid = PCIR_BAR(0); rid < PCIR_CIS;) {
2164 val = pci_read_config(dev, rid, 4);
2165 if (EM_BAR_TYPE(val) == EM_BAR_TYPE_IO) {
2166 adapter->io_rid = rid;
2170 /* check for 64bit BAR */
2171 if (EM_BAR_MEM_TYPE(val) == EM_BAR_MEM_TYPE_64BIT)
2174 if (rid >= PCIR_CIS) {
2175 device_printf(dev, "Unable to locate IO BAR\n");
2178 adapter->ioport = bus_alloc_resource_any(dev,
2179 SYS_RES_IOPORT, &adapter->io_rid, RF_ACTIVE);
2180 if (adapter->ioport == NULL) {
2181 device_printf(dev, "Unable to allocate bus resource: "
2185 adapter->hw.io_base = 0;
2186 adapter->osdep.io_bus_space_tag =
2187 rman_get_bustag(adapter->ioport);
2188 adapter->osdep.io_bus_space_handle =
2189 rman_get_bushandle(adapter->ioport);
2192 adapter->hw.back = &adapter->osdep;
2197 /*********************************************************************
2199 * Setup the Legacy or MSI Interrupt handler
2201 **********************************************************************/
2203 lem_allocate_irq(struct adapter *adapter)
2205 device_t dev = adapter->dev;
2208 /* Manually turn off all interrupts */
2209 E1000_WRITE_REG(&adapter->hw, E1000_IMC, 0xffffffff);
2211 /* We allocate a single interrupt resource */
2212 adapter->res[0] = bus_alloc_resource_any(dev,
2213 SYS_RES_IRQ, &rid, RF_SHAREABLE | RF_ACTIVE);
2214 if (adapter->res[0] == NULL) {
2215 device_printf(dev, "Unable to allocate bus resource: "
2220 /* Do Legacy setup? */
2221 if (lem_use_legacy_irq) {
2222 if ((error = bus_setup_intr(dev, adapter->res[0],
2223 INTR_TYPE_NET | INTR_MPSAFE, NULL, lem_intr, adapter,
2224 &adapter->tag[0])) != 0) {
2226 "Failed to register interrupt handler");
2233 * Use a Fast interrupt and the associated
2234 * deferred processing contexts.
2236 TASK_INIT(&adapter->rxtx_task, 0, lem_handle_rxtx, adapter);
2237 TASK_INIT(&adapter->link_task, 0, lem_handle_link, adapter);
2238 adapter->tq = taskqueue_create_fast("lem_taskq", M_NOWAIT,
2239 taskqueue_thread_enqueue, &adapter->tq);
2240 taskqueue_start_threads(&adapter->tq, 1, PI_NET, "%s taskq",
2241 device_get_nameunit(adapter->dev));
2242 if ((error = bus_setup_intr(dev, adapter->res[0],
2243 INTR_TYPE_NET, lem_irq_fast, NULL, adapter,
2244 &adapter->tag[0])) != 0) {
2245 device_printf(dev, "Failed to register fast interrupt "
2246 "handler: %d\n", error);
2247 taskqueue_free(adapter->tq);
2257 lem_free_pci_resources(struct adapter *adapter)
2259 device_t dev = adapter->dev;
2262 if (adapter->tag[0] != NULL) {
2263 bus_teardown_intr(dev, adapter->res[0],
2265 adapter->tag[0] = NULL;
2268 if (adapter->res[0] != NULL) {
2269 bus_release_resource(dev, SYS_RES_IRQ,
2270 0, adapter->res[0]);
2273 if (adapter->memory != NULL)
2274 bus_release_resource(dev, SYS_RES_MEMORY,
2275 PCIR_BAR(0), adapter->memory);
2277 if (adapter->ioport != NULL)
2278 bus_release_resource(dev, SYS_RES_IOPORT,
2279 adapter->io_rid, adapter->ioport);
2283 /*********************************************************************
2285 * Initialize the hardware to a configuration
2286 * as specified by the adapter structure.
2288 **********************************************************************/
2290 lem_hardware_init(struct adapter *adapter)
2292 device_t dev = adapter->dev;
2295 INIT_DEBUGOUT("lem_hardware_init: begin");
2297 /* Issue a global reset */
2298 e1000_reset_hw(&adapter->hw);
2300 /* When hardware is reset, fifo_head is also reset */
2301 adapter->tx_fifo_head = 0;
2304 * These parameters control the automatic generation (Tx) and
2305 * response (Rx) to Ethernet PAUSE frames.
2306 * - High water mark should allow for at least two frames to be
2307 * received after sending an XOFF.
2308 * - Low water mark works best when it is very near the high water mark.
2309 * This allows the receiver to restart by sending XON when it has
2310 * drained a bit. Here we use an arbitary value of 1500 which will
2311 * restart after one full frame is pulled from the buffer. There
2312 * could be several smaller frames in the buffer and if so they will
2313 * not trigger the XON until their total number reduces the buffer
2315 * - The pause time is fairly large at 1000 x 512ns = 512 usec.
2317 rx_buffer_size = ((E1000_READ_REG(&adapter->hw, E1000_PBA) &
2320 adapter->hw.fc.high_water = rx_buffer_size -
2321 roundup2(adapter->max_frame_size, 1024);
2322 adapter->hw.fc.low_water = adapter->hw.fc.high_water - 1500;
2324 adapter->hw.fc.pause_time = EM_FC_PAUSE_TIME;
2325 adapter->hw.fc.send_xon = TRUE;
2327 /* Set Flow control, use the tunable location if sane */
2328 if ((lem_fc_setting >= 0) && (lem_fc_setting < 4))
2329 adapter->hw.fc.requested_mode = lem_fc_setting;
2331 adapter->hw.fc.requested_mode = e1000_fc_none;
2333 if (e1000_init_hw(&adapter->hw) < 0) {
2334 device_printf(dev, "Hardware Initialization Failed\n");
2338 e1000_check_for_link(&adapter->hw);
2343 /*********************************************************************
2345 * Setup networking device structure and register an interface.
2347 **********************************************************************/
2349 lem_setup_interface(device_t dev, struct adapter *adapter)
2353 INIT_DEBUGOUT("lem_setup_interface: begin");
2355 ifp = adapter->ifp = if_alloc(IFT_ETHER);
2357 device_printf(dev, "can not allocate ifnet structure\n");
2360 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
2361 ifp->if_init = lem_init;
2362 ifp->if_softc = adapter;
2363 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
2364 ifp->if_ioctl = lem_ioctl;
2365 ifp->if_start = lem_start;
2366 IFQ_SET_MAXLEN(&ifp->if_snd, adapter->num_tx_desc - 1);
2367 ifp->if_snd.ifq_drv_maxlen = adapter->num_tx_desc - 1;
2368 IFQ_SET_READY(&ifp->if_snd);
2370 ether_ifattach(ifp, adapter->hw.mac.addr);
2372 ifp->if_capabilities = ifp->if_capenable = 0;
2374 if (adapter->hw.mac.type >= e1000_82543) {
2375 ifp->if_capabilities |= IFCAP_HWCSUM | IFCAP_VLAN_HWCSUM;
2376 ifp->if_capenable |= IFCAP_HWCSUM | IFCAP_VLAN_HWCSUM;
2380 * Tell the upper layer(s) we support long frames.
2382 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
2383 ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU;
2384 ifp->if_capenable |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU;
2387 ** Dont turn this on by default, if vlans are
2388 ** created on another pseudo device (eg. lagg)
2389 ** then vlan events are not passed thru, breaking
2390 ** operation, but with HW FILTER off it works. If
2391 ** using vlans directly on the em driver you can
2392 ** enable this and get full hardware tag filtering.
2394 ifp->if_capabilities |= IFCAP_VLAN_HWFILTER;
2396 #ifdef DEVICE_POLLING
2397 ifp->if_capabilities |= IFCAP_POLLING;
2400 /* Enable only WOL MAGIC by default */
2402 ifp->if_capabilities |= IFCAP_WOL;
2403 ifp->if_capenable |= IFCAP_WOL_MAGIC;
2407 * Specify the media types supported by this adapter and register
2408 * callbacks to update media and link information
2410 ifmedia_init(&adapter->media, IFM_IMASK,
2411 lem_media_change, lem_media_status);
2412 if ((adapter->hw.phy.media_type == e1000_media_type_fiber) ||
2413 (adapter->hw.phy.media_type == e1000_media_type_internal_serdes)) {
2414 u_char fiber_type = IFM_1000_SX; /* default type */
2416 if (adapter->hw.mac.type == e1000_82545)
2417 fiber_type = IFM_1000_LX;
2418 ifmedia_add(&adapter->media, IFM_ETHER | fiber_type | IFM_FDX,
2420 ifmedia_add(&adapter->media, IFM_ETHER | fiber_type, 0, NULL);
2422 ifmedia_add(&adapter->media, IFM_ETHER | IFM_10_T, 0, NULL);
2423 ifmedia_add(&adapter->media, IFM_ETHER | IFM_10_T | IFM_FDX,
2425 ifmedia_add(&adapter->media, IFM_ETHER | IFM_100_TX,
2427 ifmedia_add(&adapter->media, IFM_ETHER | IFM_100_TX | IFM_FDX,
2429 if (adapter->hw.phy.type != e1000_phy_ife) {
2430 ifmedia_add(&adapter->media,
2431 IFM_ETHER | IFM_1000_T | IFM_FDX, 0, NULL);
2432 ifmedia_add(&adapter->media,
2433 IFM_ETHER | IFM_1000_T, 0, NULL);
2436 ifmedia_add(&adapter->media, IFM_ETHER | IFM_AUTO, 0, NULL);
2437 ifmedia_set(&adapter->media, IFM_ETHER | IFM_AUTO);
2442 /*********************************************************************
2444 * Workaround for SmartSpeed on 82541 and 82547 controllers
2446 **********************************************************************/
2448 lem_smartspeed(struct adapter *adapter)
2452 if (adapter->link_active || (adapter->hw.phy.type != e1000_phy_igp) ||
2453 adapter->hw.mac.autoneg == 0 ||
2454 (adapter->hw.phy.autoneg_advertised & ADVERTISE_1000_FULL) == 0)
2457 if (adapter->smartspeed == 0) {
2458 /* If Master/Slave config fault is asserted twice,
2459 * we assume back-to-back */
2460 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_tmp);
2461 if (!(phy_tmp & SR_1000T_MS_CONFIG_FAULT))
2463 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_tmp);
2464 if (phy_tmp & SR_1000T_MS_CONFIG_FAULT) {
2465 e1000_read_phy_reg(&adapter->hw,
2466 PHY_1000T_CTRL, &phy_tmp);
2467 if(phy_tmp & CR_1000T_MS_ENABLE) {
2468 phy_tmp &= ~CR_1000T_MS_ENABLE;
2469 e1000_write_phy_reg(&adapter->hw,
2470 PHY_1000T_CTRL, phy_tmp);
2471 adapter->smartspeed++;
2472 if(adapter->hw.mac.autoneg &&
2473 !e1000_copper_link_autoneg(&adapter->hw) &&
2474 !e1000_read_phy_reg(&adapter->hw,
2475 PHY_CONTROL, &phy_tmp)) {
2476 phy_tmp |= (MII_CR_AUTO_NEG_EN |
2477 MII_CR_RESTART_AUTO_NEG);
2478 e1000_write_phy_reg(&adapter->hw,
2479 PHY_CONTROL, phy_tmp);
2484 } else if(adapter->smartspeed == EM_SMARTSPEED_DOWNSHIFT) {
2485 /* If still no link, perhaps using 2/3 pair cable */
2486 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_tmp);
2487 phy_tmp |= CR_1000T_MS_ENABLE;
2488 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_tmp);
2489 if(adapter->hw.mac.autoneg &&
2490 !e1000_copper_link_autoneg(&adapter->hw) &&
2491 !e1000_read_phy_reg(&adapter->hw, PHY_CONTROL, &phy_tmp)) {
2492 phy_tmp |= (MII_CR_AUTO_NEG_EN |
2493 MII_CR_RESTART_AUTO_NEG);
2494 e1000_write_phy_reg(&adapter->hw, PHY_CONTROL, phy_tmp);
2497 /* Restart process after EM_SMARTSPEED_MAX iterations */
2498 if(adapter->smartspeed++ == EM_SMARTSPEED_MAX)
2499 adapter->smartspeed = 0;
2504 * Manage DMA'able memory.
2507 lem_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
2511 *(bus_addr_t *) arg = segs[0].ds_addr;
2515 lem_dma_malloc(struct adapter *adapter, bus_size_t size,
2516 struct em_dma_alloc *dma, int mapflags)
2520 error = bus_dma_tag_create(bus_get_dma_tag(adapter->dev), /* parent */
2521 EM_DBA_ALIGN, 0, /* alignment, bounds */
2522 BUS_SPACE_MAXADDR, /* lowaddr */
2523 BUS_SPACE_MAXADDR, /* highaddr */
2524 NULL, NULL, /* filter, filterarg */
2527 size, /* maxsegsize */
2529 NULL, /* lockfunc */
2533 device_printf(adapter->dev,
2534 "%s: bus_dma_tag_create failed: %d\n",
2539 error = bus_dmamem_alloc(dma->dma_tag, (void**) &dma->dma_vaddr,
2540 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &dma->dma_map);
2542 device_printf(adapter->dev,
2543 "%s: bus_dmamem_alloc(%ju) failed: %d\n",
2544 __func__, (uintmax_t)size, error);
2549 error = bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->dma_vaddr,
2550 size, lem_dmamap_cb, &dma->dma_paddr, mapflags | BUS_DMA_NOWAIT);
2551 if (error || dma->dma_paddr == 0) {
2552 device_printf(adapter->dev,
2553 "%s: bus_dmamap_load failed: %d\n",
2561 bus_dmamap_unload(dma->dma_tag, dma->dma_map);
2563 bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map);
2564 bus_dma_tag_destroy(dma->dma_tag);
2566 dma->dma_map = NULL;
2567 dma->dma_tag = NULL;
2573 lem_dma_free(struct adapter *adapter, struct em_dma_alloc *dma)
2575 if (dma->dma_tag == NULL)
2577 if (dma->dma_map != NULL) {
2578 bus_dmamap_sync(dma->dma_tag, dma->dma_map,
2579 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
2580 bus_dmamap_unload(dma->dma_tag, dma->dma_map);
2581 bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map);
2582 dma->dma_map = NULL;
2584 bus_dma_tag_destroy(dma->dma_tag);
2585 dma->dma_tag = NULL;
2589 /*********************************************************************
2591 * Allocate memory for tx_buffer structures. The tx_buffer stores all
2592 * the information needed to transmit a packet on the wire.
2594 **********************************************************************/
2596 lem_allocate_transmit_structures(struct adapter *adapter)
2598 device_t dev = adapter->dev;
2599 struct em_buffer *tx_buffer;
2603 * Create DMA tags for tx descriptors
2605 if ((error = bus_dma_tag_create(bus_get_dma_tag(dev), /* parent */
2606 1, 0, /* alignment, bounds */
2607 BUS_SPACE_MAXADDR, /* lowaddr */
2608 BUS_SPACE_MAXADDR, /* highaddr */
2609 NULL, NULL, /* filter, filterarg */
2610 MCLBYTES * EM_MAX_SCATTER, /* maxsize */
2611 EM_MAX_SCATTER, /* nsegments */
2612 MCLBYTES, /* maxsegsize */
2614 NULL, /* lockfunc */
2616 &adapter->txtag)) != 0) {
2617 device_printf(dev, "Unable to allocate TX DMA tag\n");
2621 adapter->tx_buffer_area = malloc(sizeof(struct em_buffer) *
2622 adapter->num_tx_desc, M_DEVBUF, M_NOWAIT | M_ZERO);
2623 if (adapter->tx_buffer_area == NULL) {
2624 device_printf(dev, "Unable to allocate tx_buffer memory\n");
2629 /* Create the descriptor buffer dma maps */
2630 for (int i = 0; i < adapter->num_tx_desc; i++) {
2631 tx_buffer = &adapter->tx_buffer_area[i];
2632 error = bus_dmamap_create(adapter->txtag, 0, &tx_buffer->map);
2634 device_printf(dev, "Unable to create TX DMA map\n");
2637 tx_buffer->next_eop = -1;
2642 lem_free_transmit_structures(adapter);
2646 /*********************************************************************
2648 * (Re)Initialize transmit structures.
2650 **********************************************************************/
2652 lem_setup_transmit_structures(struct adapter *adapter)
2654 struct em_buffer *tx_buffer;
2656 /* we are already locked */
2657 struct netmap_adapter *na = NA(adapter->ifp);
2658 struct netmap_slot *slot = netmap_reset(na, NR_TX, 0, 0);
2659 #endif /* DEV_NETMAP */
2661 /* Clear the old ring contents */
2662 bzero(adapter->tx_desc_base,
2663 (sizeof(struct e1000_tx_desc)) * adapter->num_tx_desc);
2665 /* Free any existing TX buffers */
2666 for (int i = 0; i < adapter->num_tx_desc; i++, tx_buffer++) {
2667 tx_buffer = &adapter->tx_buffer_area[i];
2668 bus_dmamap_sync(adapter->txtag, tx_buffer->map,
2669 BUS_DMASYNC_POSTWRITE);
2670 bus_dmamap_unload(adapter->txtag, tx_buffer->map);
2671 m_freem(tx_buffer->m_head);
2672 tx_buffer->m_head = NULL;
2675 /* the i-th NIC entry goes to slot si */
2676 int si = netmap_idx_n2k(&na->tx_rings[0], i);
2680 addr = PNMB(slot + si, &paddr);
2681 adapter->tx_desc_base[si].buffer_addr = htole64(paddr);
2682 /* reload the map for netmap mode */
2683 netmap_load_map(adapter->txtag, tx_buffer->map, addr);
2685 #endif /* DEV_NETMAP */
2686 tx_buffer->next_eop = -1;
2690 adapter->last_hw_offload = 0;
2691 adapter->next_avail_tx_desc = 0;
2692 adapter->next_tx_to_clean = 0;
2693 adapter->num_tx_desc_avail = adapter->num_tx_desc;
2695 bus_dmamap_sync(adapter->txdma.dma_tag, adapter->txdma.dma_map,
2696 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2701 /*********************************************************************
2703 * Enable transmit unit.
2705 **********************************************************************/
2707 lem_initialize_transmit_unit(struct adapter *adapter)
2712 INIT_DEBUGOUT("lem_initialize_transmit_unit: begin");
2713 /* Setup the Base and Length of the Tx Descriptor Ring */
2714 bus_addr = adapter->txdma.dma_paddr;
2715 E1000_WRITE_REG(&adapter->hw, E1000_TDLEN(0),
2716 adapter->num_tx_desc * sizeof(struct e1000_tx_desc));
2717 E1000_WRITE_REG(&adapter->hw, E1000_TDBAH(0),
2718 (u32)(bus_addr >> 32));
2719 E1000_WRITE_REG(&adapter->hw, E1000_TDBAL(0),
2721 /* Setup the HW Tx Head and Tail descriptor pointers */
2722 E1000_WRITE_REG(&adapter->hw, E1000_TDT(0), 0);
2723 E1000_WRITE_REG(&adapter->hw, E1000_TDH(0), 0);
2725 HW_DEBUGOUT2("Base = %x, Length = %x\n",
2726 E1000_READ_REG(&adapter->hw, E1000_TDBAL(0)),
2727 E1000_READ_REG(&adapter->hw, E1000_TDLEN(0)));
2729 /* Set the default values for the Tx Inter Packet Gap timer */
2730 switch (adapter->hw.mac.type) {
2732 tipg = DEFAULT_82542_TIPG_IPGT;
2733 tipg |= DEFAULT_82542_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT;
2734 tipg |= DEFAULT_82542_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT;
2737 if ((adapter->hw.phy.media_type == e1000_media_type_fiber) ||
2738 (adapter->hw.phy.media_type ==
2739 e1000_media_type_internal_serdes))
2740 tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
2742 tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
2743 tipg |= DEFAULT_82543_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT;
2744 tipg |= DEFAULT_82543_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT;
2747 E1000_WRITE_REG(&adapter->hw, E1000_TIPG, tipg);
2748 E1000_WRITE_REG(&adapter->hw, E1000_TIDV, adapter->tx_int_delay.value);
2749 if(adapter->hw.mac.type >= e1000_82540)
2750 E1000_WRITE_REG(&adapter->hw, E1000_TADV,
2751 adapter->tx_abs_int_delay.value);
2753 /* Program the Transmit Control Register */
2754 tctl = E1000_READ_REG(&adapter->hw, E1000_TCTL);
2755 tctl &= ~E1000_TCTL_CT;
2756 tctl |= (E1000_TCTL_PSP | E1000_TCTL_RTLC | E1000_TCTL_EN |
2757 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT));
2759 /* This write will effectively turn on the transmit unit. */
2760 E1000_WRITE_REG(&adapter->hw, E1000_TCTL, tctl);
2762 /* Setup Transmit Descriptor Base Settings */
2763 adapter->txd_cmd = E1000_TXD_CMD_IFCS;
2765 if (adapter->tx_int_delay.value > 0)
2766 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
2769 /*********************************************************************
2771 * Free all transmit related data structures.
2773 **********************************************************************/
2775 lem_free_transmit_structures(struct adapter *adapter)
2777 struct em_buffer *tx_buffer;
2779 INIT_DEBUGOUT("free_transmit_structures: begin");
2781 if (adapter->tx_buffer_area != NULL) {
2782 for (int i = 0; i < adapter->num_tx_desc; i++) {
2783 tx_buffer = &adapter->tx_buffer_area[i];
2784 if (tx_buffer->m_head != NULL) {
2785 bus_dmamap_sync(adapter->txtag, tx_buffer->map,
2786 BUS_DMASYNC_POSTWRITE);
2787 bus_dmamap_unload(adapter->txtag,
2789 m_freem(tx_buffer->m_head);
2790 tx_buffer->m_head = NULL;
2791 } else if (tx_buffer->map != NULL)
2792 bus_dmamap_unload(adapter->txtag,
2794 if (tx_buffer->map != NULL) {
2795 bus_dmamap_destroy(adapter->txtag,
2797 tx_buffer->map = NULL;
2801 if (adapter->tx_buffer_area != NULL) {
2802 free(adapter->tx_buffer_area, M_DEVBUF);
2803 adapter->tx_buffer_area = NULL;
2805 if (adapter->txtag != NULL) {
2806 bus_dma_tag_destroy(adapter->txtag);
2807 adapter->txtag = NULL;
2809 #if __FreeBSD_version >= 800000
2810 if (adapter->br != NULL)
2811 buf_ring_free(adapter->br, M_DEVBUF);
2815 /*********************************************************************
2817 * The offload context needs to be set when we transfer the first
2818 * packet of a particular protocol (TCP/UDP). This routine has been
2819 * enhanced to deal with inserted VLAN headers, and IPV6 (not complete)
2821 * Added back the old method of keeping the current context type
2822 * and not setting if unnecessary, as this is reported to be a
2823 * big performance win. -jfv
2824 **********************************************************************/
2826 lem_transmit_checksum_setup(struct adapter *adapter, struct mbuf *mp,
2827 u32 *txd_upper, u32 *txd_lower)
2829 struct e1000_context_desc *TXD = NULL;
2830 struct em_buffer *tx_buffer;
2831 struct ether_vlan_header *eh;
2832 struct ip *ip = NULL;
2833 struct ip6_hdr *ip6;
2834 int curr_txd, ehdrlen;
2835 u32 cmd, hdr_len, ip_hlen;
2840 cmd = hdr_len = ipproto = 0;
2841 *txd_upper = *txd_lower = 0;
2842 curr_txd = adapter->next_avail_tx_desc;
2845 * Determine where frame payload starts.
2846 * Jump over vlan headers if already present,
2847 * helpful for QinQ too.
2849 eh = mtod(mp, struct ether_vlan_header *);
2850 if (eh->evl_encap_proto == htons(ETHERTYPE_VLAN)) {
2851 etype = ntohs(eh->evl_proto);
2852 ehdrlen = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN;
2854 etype = ntohs(eh->evl_encap_proto);
2855 ehdrlen = ETHER_HDR_LEN;
2859 * We only support TCP/UDP for IPv4 and IPv6 for the moment.
2860 * TODO: Support SCTP too when it hits the tree.
2864 ip = (struct ip *)(mp->m_data + ehdrlen);
2865 ip_hlen = ip->ip_hl << 2;
2867 /* Setup of IP header checksum. */
2868 if (mp->m_pkthdr.csum_flags & CSUM_IP) {
2870 * Start offset for header checksum calculation.
2871 * End offset for header checksum calculation.
2872 * Offset of place to put the checksum.
2874 TXD = (struct e1000_context_desc *)
2875 &adapter->tx_desc_base[curr_txd];
2876 TXD->lower_setup.ip_fields.ipcss = ehdrlen;
2877 TXD->lower_setup.ip_fields.ipcse =
2878 htole16(ehdrlen + ip_hlen);
2879 TXD->lower_setup.ip_fields.ipcso =
2880 ehdrlen + offsetof(struct ip, ip_sum);
2881 cmd |= E1000_TXD_CMD_IP;
2882 *txd_upper |= E1000_TXD_POPTS_IXSM << 8;
2885 hdr_len = ehdrlen + ip_hlen;
2889 case ETHERTYPE_IPV6:
2890 ip6 = (struct ip6_hdr *)(mp->m_data + ehdrlen);
2891 ip_hlen = sizeof(struct ip6_hdr); /* XXX: No header stacking. */
2893 /* IPv6 doesn't have a header checksum. */
2895 hdr_len = ehdrlen + ip_hlen;
2896 ipproto = ip6->ip6_nxt;
2905 if (mp->m_pkthdr.csum_flags & CSUM_TCP) {
2906 *txd_lower = E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
2907 *txd_upper |= E1000_TXD_POPTS_TXSM << 8;
2908 /* no need for context if already set */
2909 if (adapter->last_hw_offload == CSUM_TCP)
2911 adapter->last_hw_offload = CSUM_TCP;
2913 * Start offset for payload checksum calculation.
2914 * End offset for payload checksum calculation.
2915 * Offset of place to put the checksum.
2917 TXD = (struct e1000_context_desc *)
2918 &adapter->tx_desc_base[curr_txd];
2919 TXD->upper_setup.tcp_fields.tucss = hdr_len;
2920 TXD->upper_setup.tcp_fields.tucse = htole16(0);
2921 TXD->upper_setup.tcp_fields.tucso =
2922 hdr_len + offsetof(struct tcphdr, th_sum);
2923 cmd |= E1000_TXD_CMD_TCP;
2928 if (mp->m_pkthdr.csum_flags & CSUM_UDP) {
2929 *txd_lower = E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
2930 *txd_upper |= E1000_TXD_POPTS_TXSM << 8;
2931 /* no need for context if already set */
2932 if (adapter->last_hw_offload == CSUM_UDP)
2934 adapter->last_hw_offload = CSUM_UDP;
2936 * Start offset for header checksum calculation.
2937 * End offset for header checksum calculation.
2938 * Offset of place to put the checksum.
2940 TXD = (struct e1000_context_desc *)
2941 &adapter->tx_desc_base[curr_txd];
2942 TXD->upper_setup.tcp_fields.tucss = hdr_len;
2943 TXD->upper_setup.tcp_fields.tucse = htole16(0);
2944 TXD->upper_setup.tcp_fields.tucso =
2945 hdr_len + offsetof(struct udphdr, uh_sum);
2955 TXD->tcp_seg_setup.data = htole32(0);
2956 TXD->cmd_and_length =
2957 htole32(adapter->txd_cmd | E1000_TXD_CMD_DEXT | cmd);
2958 tx_buffer = &adapter->tx_buffer_area[curr_txd];
2959 tx_buffer->m_head = NULL;
2960 tx_buffer->next_eop = -1;
2962 if (++curr_txd == adapter->num_tx_desc)
2965 adapter->num_tx_desc_avail--;
2966 adapter->next_avail_tx_desc = curr_txd;
2970 /**********************************************************************
2972 * Examine each tx_buffer in the used queue. If the hardware is done
2973 * processing the packet then free associated resources. The
2974 * tx_buffer is put back on the free queue.
2976 **********************************************************************/
2978 lem_txeof(struct adapter *adapter)
2980 int first, last, done, num_avail;
2981 struct em_buffer *tx_buffer;
2982 struct e1000_tx_desc *tx_desc, *eop_desc;
2983 struct ifnet *ifp = adapter->ifp;
2985 EM_TX_LOCK_ASSERT(adapter);
2988 if (netmap_tx_irq(ifp, 0 | (NETMAP_LOCKED_ENTER|NETMAP_LOCKED_EXIT)))
2990 #endif /* DEV_NETMAP */
2991 if (adapter->num_tx_desc_avail == adapter->num_tx_desc)
2994 num_avail = adapter->num_tx_desc_avail;
2995 first = adapter->next_tx_to_clean;
2996 tx_desc = &adapter->tx_desc_base[first];
2997 tx_buffer = &adapter->tx_buffer_area[first];
2998 last = tx_buffer->next_eop;
2999 eop_desc = &adapter->tx_desc_base[last];
3002 * What this does is get the index of the
3003 * first descriptor AFTER the EOP of the
3004 * first packet, that way we can do the
3005 * simple comparison on the inner while loop.
3007 if (++last == adapter->num_tx_desc)
3011 bus_dmamap_sync(adapter->txdma.dma_tag, adapter->txdma.dma_map,
3012 BUS_DMASYNC_POSTREAD);
3014 while (eop_desc->upper.fields.status & E1000_TXD_STAT_DD) {
3015 /* We clean the range of the packet */
3016 while (first != done) {
3017 tx_desc->upper.data = 0;
3018 tx_desc->lower.data = 0;
3019 tx_desc->buffer_addr = 0;
3022 if (tx_buffer->m_head) {
3024 bus_dmamap_sync(adapter->txtag,
3026 BUS_DMASYNC_POSTWRITE);
3027 bus_dmamap_unload(adapter->txtag,
3030 m_freem(tx_buffer->m_head);
3031 tx_buffer->m_head = NULL;
3033 tx_buffer->next_eop = -1;
3034 adapter->watchdog_time = ticks;
3036 if (++first == adapter->num_tx_desc)
3039 tx_buffer = &adapter->tx_buffer_area[first];
3040 tx_desc = &adapter->tx_desc_base[first];
3042 /* See if we can continue to the next packet */
3043 last = tx_buffer->next_eop;
3045 eop_desc = &adapter->tx_desc_base[last];
3046 /* Get new done point */
3047 if (++last == adapter->num_tx_desc) last = 0;
3052 bus_dmamap_sync(adapter->txdma.dma_tag, adapter->txdma.dma_map,
3053 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3055 adapter->next_tx_to_clean = first;
3056 adapter->num_tx_desc_avail = num_avail;
3059 * If we have enough room, clear IFF_DRV_OACTIVE to
3060 * tell the stack that it is OK to send packets.
3061 * If there are no pending descriptors, clear the watchdog.
3063 if (adapter->num_tx_desc_avail > EM_TX_CLEANUP_THRESHOLD) {
3064 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
3065 if (adapter->num_tx_desc_avail == adapter->num_tx_desc) {
3066 adapter->watchdog_check = FALSE;
3072 /*********************************************************************
3074 * When Link is lost sometimes there is work still in the TX ring
3075 * which may result in a watchdog, rather than allow that we do an
3076 * attempted cleanup and then reinit here. Note that this has been
3077 * seens mostly with fiber adapters.
3079 **********************************************************************/
3081 lem_tx_purge(struct adapter *adapter)
3083 if ((!adapter->link_active) && (adapter->watchdog_check)) {
3084 EM_TX_LOCK(adapter);
3086 EM_TX_UNLOCK(adapter);
3087 if (adapter->watchdog_check) /* Still outstanding? */
3088 lem_init_locked(adapter);
3092 /*********************************************************************
3094 * Get a buffer from system mbuf buffer pool.
3096 **********************************************************************/
3098 lem_get_buf(struct adapter *adapter, int i)
3101 bus_dma_segment_t segs[1];
3103 struct em_buffer *rx_buffer;
3106 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
3108 adapter->mbuf_cluster_failed++;
3111 m->m_len = m->m_pkthdr.len = MCLBYTES;
3113 if (adapter->max_frame_size <= (MCLBYTES - ETHER_ALIGN))
3114 m_adj(m, ETHER_ALIGN);
3117 * Using memory from the mbuf cluster pool, invoke the
3118 * bus_dma machinery to arrange the memory mapping.
3120 error = bus_dmamap_load_mbuf_sg(adapter->rxtag,
3121 adapter->rx_sparemap, m, segs, &nsegs, BUS_DMA_NOWAIT);
3127 /* If nsegs is wrong then the stack is corrupt. */
3128 KASSERT(nsegs == 1, ("Too many segments returned!"));
3130 rx_buffer = &adapter->rx_buffer_area[i];
3131 if (rx_buffer->m_head != NULL)
3132 bus_dmamap_unload(adapter->rxtag, rx_buffer->map);
3134 map = rx_buffer->map;
3135 rx_buffer->map = adapter->rx_sparemap;
3136 adapter->rx_sparemap = map;
3137 bus_dmamap_sync(adapter->rxtag, rx_buffer->map, BUS_DMASYNC_PREREAD);
3138 rx_buffer->m_head = m;
3140 adapter->rx_desc_base[i].buffer_addr = htole64(segs[0].ds_addr);
3144 /*********************************************************************
3146 * Allocate memory for rx_buffer structures. Since we use one
3147 * rx_buffer per received packet, the maximum number of rx_buffer's
3148 * that we'll need is equal to the number of receive descriptors
3149 * that we've allocated.
3151 **********************************************************************/
3153 lem_allocate_receive_structures(struct adapter *adapter)
3155 device_t dev = adapter->dev;
3156 struct em_buffer *rx_buffer;
3159 adapter->rx_buffer_area = malloc(sizeof(struct em_buffer) *
3160 adapter->num_rx_desc, M_DEVBUF, M_NOWAIT | M_ZERO);
3161 if (adapter->rx_buffer_area == NULL) {
3162 device_printf(dev, "Unable to allocate rx_buffer memory\n");
3166 error = bus_dma_tag_create(bus_get_dma_tag(dev), /* parent */
3167 1, 0, /* alignment, bounds */
3168 BUS_SPACE_MAXADDR, /* lowaddr */
3169 BUS_SPACE_MAXADDR, /* highaddr */
3170 NULL, NULL, /* filter, filterarg */
3171 MCLBYTES, /* maxsize */
3173 MCLBYTES, /* maxsegsize */
3175 NULL, /* lockfunc */
3179 device_printf(dev, "%s: bus_dma_tag_create failed %d\n",
3184 /* Create the spare map (used by getbuf) */
3185 error = bus_dmamap_create(adapter->rxtag, BUS_DMA_NOWAIT,
3186 &adapter->rx_sparemap);
3188 device_printf(dev, "%s: bus_dmamap_create failed: %d\n",
3193 rx_buffer = adapter->rx_buffer_area;
3194 for (i = 0; i < adapter->num_rx_desc; i++, rx_buffer++) {
3195 error = bus_dmamap_create(adapter->rxtag, BUS_DMA_NOWAIT,
3198 device_printf(dev, "%s: bus_dmamap_create failed: %d\n",
3207 lem_free_receive_structures(adapter);
3211 /*********************************************************************
3213 * (Re)initialize receive structures.
3215 **********************************************************************/
3217 lem_setup_receive_structures(struct adapter *adapter)
3219 struct em_buffer *rx_buffer;
3222 /* we are already under lock */
3223 struct netmap_adapter *na = NA(adapter->ifp);
3224 struct netmap_slot *slot = netmap_reset(na, NR_RX, 0, 0);
3227 /* Reset descriptor ring */
3228 bzero(adapter->rx_desc_base,
3229 (sizeof(struct e1000_rx_desc)) * adapter->num_rx_desc);
3231 /* Free current RX buffers. */
3232 rx_buffer = adapter->rx_buffer_area;
3233 for (i = 0; i < adapter->num_rx_desc; i++, rx_buffer++) {
3234 if (rx_buffer->m_head != NULL) {
3235 bus_dmamap_sync(adapter->rxtag, rx_buffer->map,
3236 BUS_DMASYNC_POSTREAD);
3237 bus_dmamap_unload(adapter->rxtag, rx_buffer->map);
3238 m_freem(rx_buffer->m_head);
3239 rx_buffer->m_head = NULL;
3243 /* Allocate new ones. */
3244 for (i = 0; i < adapter->num_rx_desc; i++) {
3247 /* the i-th NIC entry goes to slot si */
3248 int si = netmap_idx_n2k(&na->rx_rings[0], i);
3252 addr = PNMB(slot + si, &paddr);
3253 netmap_load_map(adapter->rxtag, rx_buffer->map, addr);
3254 /* Update descriptor */
3255 adapter->rx_desc_base[i].buffer_addr = htole64(paddr);
3258 #endif /* DEV_NETMAP */
3259 error = lem_get_buf(adapter, i);
3264 /* Setup our descriptor pointers */
3265 adapter->next_rx_desc_to_check = 0;
3266 bus_dmamap_sync(adapter->rxdma.dma_tag, adapter->rxdma.dma_map,
3267 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3272 /*********************************************************************
3274 * Enable receive unit.
3276 **********************************************************************/
3279 lem_initialize_receive_unit(struct adapter *adapter)
3281 struct ifnet *ifp = adapter->ifp;
3285 INIT_DEBUGOUT("lem_initialize_receive_unit: begin");
3288 * Make sure receives are disabled while setting
3289 * up the descriptor ring
3291 rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL);
3292 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, rctl & ~E1000_RCTL_EN);
3294 if (adapter->hw.mac.type >= e1000_82540) {
3295 E1000_WRITE_REG(&adapter->hw, E1000_RADV,
3296 adapter->rx_abs_int_delay.value);
3298 * Set the interrupt throttling rate. Value is calculated
3299 * as DEFAULT_ITR = 1/(MAX_INTS_PER_SEC * 256ns)
3301 E1000_WRITE_REG(&adapter->hw, E1000_ITR, DEFAULT_ITR);
3304 /* Setup the Base and Length of the Rx Descriptor Ring */
3305 bus_addr = adapter->rxdma.dma_paddr;
3306 E1000_WRITE_REG(&adapter->hw, E1000_RDLEN(0),
3307 adapter->num_rx_desc * sizeof(struct e1000_rx_desc));
3308 E1000_WRITE_REG(&adapter->hw, E1000_RDBAH(0),
3309 (u32)(bus_addr >> 32));
3310 E1000_WRITE_REG(&adapter->hw, E1000_RDBAL(0),
3313 /* Setup the Receive Control Register */
3314 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
3315 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_LBM_NO |
3316 E1000_RCTL_RDMTS_HALF |
3317 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
3319 /* Make sure VLAN Filters are off */
3320 rctl &= ~E1000_RCTL_VFE;
3322 if (e1000_tbi_sbp_enabled_82543(&adapter->hw))
3323 rctl |= E1000_RCTL_SBP;
3325 rctl &= ~E1000_RCTL_SBP;
3327 switch (adapter->rx_buffer_len) {
3330 rctl |= E1000_RCTL_SZ_2048;
3333 rctl |= E1000_RCTL_SZ_4096 |
3334 E1000_RCTL_BSEX | E1000_RCTL_LPE;
3337 rctl |= E1000_RCTL_SZ_8192 |
3338 E1000_RCTL_BSEX | E1000_RCTL_LPE;
3341 rctl |= E1000_RCTL_SZ_16384 |
3342 E1000_RCTL_BSEX | E1000_RCTL_LPE;
3346 if (ifp->if_mtu > ETHERMTU)
3347 rctl |= E1000_RCTL_LPE;
3349 rctl &= ~E1000_RCTL_LPE;
3351 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
3352 if ((adapter->hw.mac.type >= e1000_82543) &&
3353 (ifp->if_capenable & IFCAP_RXCSUM)) {
3354 rxcsum = E1000_READ_REG(&adapter->hw, E1000_RXCSUM);
3355 rxcsum |= (E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL);
3356 E1000_WRITE_REG(&adapter->hw, E1000_RXCSUM, rxcsum);
3359 /* Enable Receives */
3360 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, rctl);
3363 * Setup the HW Rx Head and
3364 * Tail Descriptor Pointers
3366 E1000_WRITE_REG(&adapter->hw, E1000_RDH(0), 0);
3367 rctl = adapter->num_rx_desc - 1; /* default RDT value */
3369 /* preserve buffers already made available to clients */
3370 if (ifp->if_capenable & IFCAP_NETMAP)
3371 rctl -= NA(adapter->ifp)->rx_rings[0].nr_hwavail;
3372 #endif /* DEV_NETMAP */
3373 E1000_WRITE_REG(&adapter->hw, E1000_RDT(0), rctl);
3378 /*********************************************************************
3380 * Free receive related data structures.
3382 **********************************************************************/
3384 lem_free_receive_structures(struct adapter *adapter)
3386 struct em_buffer *rx_buffer;
3389 INIT_DEBUGOUT("free_receive_structures: begin");
3391 if (adapter->rx_sparemap) {
3392 bus_dmamap_destroy(adapter->rxtag, adapter->rx_sparemap);
3393 adapter->rx_sparemap = NULL;
3396 /* Cleanup any existing buffers */
3397 if (adapter->rx_buffer_area != NULL) {
3398 rx_buffer = adapter->rx_buffer_area;
3399 for (i = 0; i < adapter->num_rx_desc; i++, rx_buffer++) {
3400 if (rx_buffer->m_head != NULL) {
3401 bus_dmamap_sync(adapter->rxtag, rx_buffer->map,
3402 BUS_DMASYNC_POSTREAD);
3403 bus_dmamap_unload(adapter->rxtag,
3405 m_freem(rx_buffer->m_head);
3406 rx_buffer->m_head = NULL;
3407 } else if (rx_buffer->map != NULL)
3408 bus_dmamap_unload(adapter->rxtag,
3410 if (rx_buffer->map != NULL) {
3411 bus_dmamap_destroy(adapter->rxtag,
3413 rx_buffer->map = NULL;
3418 if (adapter->rx_buffer_area != NULL) {
3419 free(adapter->rx_buffer_area, M_DEVBUF);
3420 adapter->rx_buffer_area = NULL;
3423 if (adapter->rxtag != NULL) {
3424 bus_dma_tag_destroy(adapter->rxtag);
3425 adapter->rxtag = NULL;
3429 /*********************************************************************
3431 * This routine executes in interrupt context. It replenishes
3432 * the mbufs in the descriptor and sends data which has been
3433 * dma'ed into host memory to upper layer.
3435 * We loop at most count times if count is > 0, or until done if
3438 * For polling we also now return the number of cleaned packets
3439 *********************************************************************/
3441 lem_rxeof(struct adapter *adapter, int count, int *done)
3443 struct ifnet *ifp = adapter->ifp;
3445 u8 status = 0, accept_frame = 0, eop = 0;
3446 u16 len, desc_len, prev_len_adj;
3448 struct e1000_rx_desc *current_desc;
3450 EM_RX_LOCK(adapter);
3451 i = adapter->next_rx_desc_to_check;
3452 current_desc = &adapter->rx_desc_base[i];
3453 bus_dmamap_sync(adapter->rxdma.dma_tag, adapter->rxdma.dma_map,
3454 BUS_DMASYNC_POSTREAD);
3457 if (netmap_rx_irq(ifp, 0 | NETMAP_LOCKED_ENTER, &rx_sent))
3459 #endif /* DEV_NETMAP */
3461 if (!((current_desc->status) & E1000_RXD_STAT_DD)) {
3464 EM_RX_UNLOCK(adapter);
3468 while (count != 0 && ifp->if_drv_flags & IFF_DRV_RUNNING) {
3469 struct mbuf *m = NULL;
3471 status = current_desc->status;
3472 if ((status & E1000_RXD_STAT_DD) == 0)
3475 mp = adapter->rx_buffer_area[i].m_head;
3477 * Can't defer bus_dmamap_sync(9) because TBI_ACCEPT
3478 * needs to access the last received byte in the mbuf.
3480 bus_dmamap_sync(adapter->rxtag, adapter->rx_buffer_area[i].map,
3481 BUS_DMASYNC_POSTREAD);
3485 desc_len = le16toh(current_desc->length);
3486 if (status & E1000_RXD_STAT_EOP) {
3489 if (desc_len < ETHER_CRC_LEN) {
3491 prev_len_adj = ETHER_CRC_LEN - desc_len;
3493 len = desc_len - ETHER_CRC_LEN;
3499 if (current_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) {
3501 u32 pkt_len = desc_len;
3503 if (adapter->fmp != NULL)
3504 pkt_len += adapter->fmp->m_pkthdr.len;
3506 last_byte = *(mtod(mp, caddr_t) + desc_len - 1);
3507 if (TBI_ACCEPT(&adapter->hw, status,
3508 current_desc->errors, pkt_len, last_byte,
3509 adapter->min_frame_size, adapter->max_frame_size)) {
3510 e1000_tbi_adjust_stats_82543(&adapter->hw,
3511 &adapter->stats, pkt_len,
3512 adapter->hw.mac.addr,
3513 adapter->max_frame_size);
3521 if (lem_get_buf(adapter, i) != 0) {
3526 /* Assign correct length to the current fragment */
3529 if (adapter->fmp == NULL) {
3530 mp->m_pkthdr.len = len;
3531 adapter->fmp = mp; /* Store the first mbuf */
3534 /* Chain mbuf's together */
3535 mp->m_flags &= ~M_PKTHDR;
3537 * Adjust length of previous mbuf in chain if
3538 * we received less than 4 bytes in the last
3541 if (prev_len_adj > 0) {
3542 adapter->lmp->m_len -= prev_len_adj;
3543 adapter->fmp->m_pkthdr.len -=
3546 adapter->lmp->m_next = mp;
3547 adapter->lmp = adapter->lmp->m_next;
3548 adapter->fmp->m_pkthdr.len += len;
3552 adapter->fmp->m_pkthdr.rcvif = ifp;
3554 lem_receive_checksum(adapter, current_desc,
3556 #ifndef __NO_STRICT_ALIGNMENT
3557 if (adapter->max_frame_size >
3558 (MCLBYTES - ETHER_ALIGN) &&
3559 lem_fixup_rx(adapter) != 0)
3562 if (status & E1000_RXD_STAT_VP) {
3563 adapter->fmp->m_pkthdr.ether_vtag =
3564 le16toh(current_desc->special);
3565 adapter->fmp->m_flags |= M_VLANTAG;
3567 #ifndef __NO_STRICT_ALIGNMENT
3571 adapter->fmp = NULL;
3572 adapter->lmp = NULL;
3575 adapter->dropped_pkts++;
3577 /* Reuse loaded DMA map and just update mbuf chain */
3578 mp = adapter->rx_buffer_area[i].m_head;
3579 mp->m_len = mp->m_pkthdr.len = MCLBYTES;
3580 mp->m_data = mp->m_ext.ext_buf;
3582 if (adapter->max_frame_size <=
3583 (MCLBYTES - ETHER_ALIGN))
3584 m_adj(mp, ETHER_ALIGN);
3585 if (adapter->fmp != NULL) {
3586 m_freem(adapter->fmp);
3587 adapter->fmp = NULL;
3588 adapter->lmp = NULL;
3593 /* Zero out the receive descriptors status. */
3594 current_desc->status = 0;
3595 bus_dmamap_sync(adapter->rxdma.dma_tag, adapter->rxdma.dma_map,
3596 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3598 /* Advance our pointers to the next descriptor. */
3599 if (++i == adapter->num_rx_desc)
3601 /* Call into the stack */
3603 adapter->next_rx_desc_to_check = i;
3604 EM_RX_UNLOCK(adapter);
3605 (*ifp->if_input)(ifp, m);
3606 EM_RX_LOCK(adapter);
3608 i = adapter->next_rx_desc_to_check;
3610 current_desc = &adapter->rx_desc_base[i];
3612 adapter->next_rx_desc_to_check = i;
3614 /* Advance the E1000's Receive Queue #0 "Tail Pointer". */
3616 i = adapter->num_rx_desc - 1;
3617 E1000_WRITE_REG(&adapter->hw, E1000_RDT(0), i);
3620 EM_RX_UNLOCK(adapter);
3621 return ((status & E1000_RXD_STAT_DD) ? TRUE : FALSE);
3624 #ifndef __NO_STRICT_ALIGNMENT
3626 * When jumbo frames are enabled we should realign entire payload on
3627 * architecures with strict alignment. This is serious design mistake of 8254x
3628 * as it nullifies DMA operations. 8254x just allows RX buffer size to be
3629 * 2048/4096/8192/16384. What we really want is 2048 - ETHER_ALIGN to align its
3630 * payload. On architecures without strict alignment restrictions 8254x still
3631 * performs unaligned memory access which would reduce the performance too.
3632 * To avoid copying over an entire frame to align, we allocate a new mbuf and
3633 * copy ethernet header to the new mbuf. The new mbuf is prepended into the
3634 * existing mbuf chain.
3636 * Be aware, best performance of the 8254x is achived only when jumbo frame is
3637 * not used at all on architectures with strict alignment.
3640 lem_fixup_rx(struct adapter *adapter)
3647 if (m->m_len <= (MCLBYTES - ETHER_HDR_LEN)) {
3648 bcopy(m->m_data, m->m_data + ETHER_HDR_LEN, m->m_len);
3649 m->m_data += ETHER_HDR_LEN;
3651 MGETHDR(n, M_NOWAIT, MT_DATA);
3653 bcopy(m->m_data, n->m_data, ETHER_HDR_LEN);
3654 m->m_data += ETHER_HDR_LEN;
3655 m->m_len -= ETHER_HDR_LEN;
3656 n->m_len = ETHER_HDR_LEN;
3657 M_MOVE_PKTHDR(n, m);
3661 adapter->dropped_pkts++;
3662 m_freem(adapter->fmp);
3663 adapter->fmp = NULL;
3672 /*********************************************************************
3674 * Verify that the hardware indicated that the checksum is valid.
3675 * Inform the stack about the status of checksum so that stack
3676 * doesn't spend time verifying the checksum.
3678 *********************************************************************/
3680 lem_receive_checksum(struct adapter *adapter,
3681 struct e1000_rx_desc *rx_desc, struct mbuf *mp)
3683 /* 82543 or newer only */
3684 if ((adapter->hw.mac.type < e1000_82543) ||
3685 /* Ignore Checksum bit is set */
3686 (rx_desc->status & E1000_RXD_STAT_IXSM)) {
3687 mp->m_pkthdr.csum_flags = 0;
3691 if (rx_desc->status & E1000_RXD_STAT_IPCS) {
3693 if (!(rx_desc->errors & E1000_RXD_ERR_IPE)) {
3694 /* IP Checksum Good */
3695 mp->m_pkthdr.csum_flags = CSUM_IP_CHECKED;
3696 mp->m_pkthdr.csum_flags |= CSUM_IP_VALID;
3699 mp->m_pkthdr.csum_flags = 0;
3703 if (rx_desc->status & E1000_RXD_STAT_TCPCS) {
3705 if (!(rx_desc->errors & E1000_RXD_ERR_TCPE)) {
3706 mp->m_pkthdr.csum_flags |=
3707 (CSUM_DATA_VALID | CSUM_PSEUDO_HDR);
3708 mp->m_pkthdr.csum_data = htons(0xffff);
3714 * This routine is run via an vlan
3718 lem_register_vlan(void *arg, struct ifnet *ifp, u16 vtag)
3720 struct adapter *adapter = ifp->if_softc;
3723 if (ifp->if_softc != arg) /* Not our event */
3726 if ((vtag == 0) || (vtag > 4095)) /* Invalid ID */
3729 EM_CORE_LOCK(adapter);
3730 index = (vtag >> 5) & 0x7F;
3732 adapter->shadow_vfta[index] |= (1 << bit);
3733 ++adapter->num_vlans;
3734 /* Re-init to load the changes */
3735 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER)
3736 lem_init_locked(adapter);
3737 EM_CORE_UNLOCK(adapter);
3741 * This routine is run via an vlan
3745 lem_unregister_vlan(void *arg, struct ifnet *ifp, u16 vtag)
3747 struct adapter *adapter = ifp->if_softc;
3750 if (ifp->if_softc != arg)
3753 if ((vtag == 0) || (vtag > 4095)) /* Invalid */
3756 EM_CORE_LOCK(adapter);
3757 index = (vtag >> 5) & 0x7F;
3759 adapter->shadow_vfta[index] &= ~(1 << bit);
3760 --adapter->num_vlans;
3761 /* Re-init to load the changes */
3762 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER)
3763 lem_init_locked(adapter);
3764 EM_CORE_UNLOCK(adapter);
3768 lem_setup_vlan_hw_support(struct adapter *adapter)
3770 struct e1000_hw *hw = &adapter->hw;
3774 ** We get here thru init_locked, meaning
3775 ** a soft reset, this has already cleared
3776 ** the VFTA and other state, so if there
3777 ** have been no vlan's registered do nothing.
3779 if (adapter->num_vlans == 0)
3783 ** A soft reset zero's out the VFTA, so
3784 ** we need to repopulate it now.
3786 for (int i = 0; i < EM_VFTA_SIZE; i++)
3787 if (adapter->shadow_vfta[i] != 0)
3788 E1000_WRITE_REG_ARRAY(hw, E1000_VFTA,
3789 i, adapter->shadow_vfta[i]);
3791 reg = E1000_READ_REG(hw, E1000_CTRL);
3792 reg |= E1000_CTRL_VME;
3793 E1000_WRITE_REG(hw, E1000_CTRL, reg);
3795 /* Enable the Filter Table */
3796 reg = E1000_READ_REG(hw, E1000_RCTL);
3797 reg &= ~E1000_RCTL_CFIEN;
3798 reg |= E1000_RCTL_VFE;
3799 E1000_WRITE_REG(hw, E1000_RCTL, reg);
3803 lem_enable_intr(struct adapter *adapter)
3805 struct e1000_hw *hw = &adapter->hw;
3806 u32 ims_mask = IMS_ENABLE_MASK;
3808 E1000_WRITE_REG(hw, E1000_IMS, ims_mask);
3812 lem_disable_intr(struct adapter *adapter)
3814 struct e1000_hw *hw = &adapter->hw;
3816 E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff);
3820 * Bit of a misnomer, what this really means is
3821 * to enable OS management of the system... aka
3822 * to disable special hardware management features
3825 lem_init_manageability(struct adapter *adapter)
3827 /* A shared code workaround */
3828 if (adapter->has_manage) {
3829 int manc = E1000_READ_REG(&adapter->hw, E1000_MANC);
3830 /* disable hardware interception of ARP */
3831 manc &= ~(E1000_MANC_ARP_EN);
3832 E1000_WRITE_REG(&adapter->hw, E1000_MANC, manc);
3837 * Give control back to hardware management
3838 * controller if there is one.
3841 lem_release_manageability(struct adapter *adapter)
3843 if (adapter->has_manage) {
3844 int manc = E1000_READ_REG(&adapter->hw, E1000_MANC);
3846 /* re-enable hardware interception of ARP */
3847 manc |= E1000_MANC_ARP_EN;
3848 E1000_WRITE_REG(&adapter->hw, E1000_MANC, manc);
3853 * lem_get_hw_control sets the {CTRL_EXT|FWSM}:DRV_LOAD bit.
3854 * For ASF and Pass Through versions of f/w this means
3855 * that the driver is loaded. For AMT version type f/w
3856 * this means that the network i/f is open.
3859 lem_get_hw_control(struct adapter *adapter)
3863 ctrl_ext = E1000_READ_REG(&adapter->hw, E1000_CTRL_EXT);
3864 E1000_WRITE_REG(&adapter->hw, E1000_CTRL_EXT,
3865 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
3870 * lem_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
3871 * For ASF and Pass Through versions of f/w this means that
3872 * the driver is no longer loaded. For AMT versions of the
3873 * f/w this means that the network i/f is closed.
3876 lem_release_hw_control(struct adapter *adapter)
3880 if (!adapter->has_manage)
3883 ctrl_ext = E1000_READ_REG(&adapter->hw, E1000_CTRL_EXT);
3884 E1000_WRITE_REG(&adapter->hw, E1000_CTRL_EXT,
3885 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
3890 lem_is_valid_ether_addr(u8 *addr)
3892 char zero_addr[6] = { 0, 0, 0, 0, 0, 0 };
3894 if ((addr[0] & 1) || (!bcmp(addr, zero_addr, ETHER_ADDR_LEN))) {
3902 ** Parse the interface capabilities with regard
3903 ** to both system management and wake-on-lan for
3907 lem_get_wakeup(device_t dev)
3909 struct adapter *adapter = device_get_softc(dev);
3910 u16 eeprom_data = 0, device_id, apme_mask;
3912 adapter->has_manage = e1000_enable_mng_pass_thru(&adapter->hw);
3913 apme_mask = EM_EEPROM_APME;
3915 switch (adapter->hw.mac.type) {
3920 e1000_read_nvm(&adapter->hw,
3921 NVM_INIT_CONTROL2_REG, 1, &eeprom_data);
3922 apme_mask = EM_82544_APME;
3925 case e1000_82546_rev_3:
3926 if (adapter->hw.bus.func == 1) {
3927 e1000_read_nvm(&adapter->hw,
3928 NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
3931 e1000_read_nvm(&adapter->hw,
3932 NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
3935 e1000_read_nvm(&adapter->hw,
3936 NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
3939 if (eeprom_data & apme_mask)
3940 adapter->wol = (E1000_WUFC_MAG | E1000_WUFC_MC);
3942 * We have the eeprom settings, now apply the special cases
3943 * where the eeprom may be wrong or the board won't support
3944 * wake on lan on a particular port
3946 device_id = pci_get_device(dev);
3947 switch (device_id) {
3948 case E1000_DEV_ID_82546GB_PCIE:
3951 case E1000_DEV_ID_82546EB_FIBER:
3952 case E1000_DEV_ID_82546GB_FIBER:
3953 /* Wake events only supported on port A for dual fiber
3954 * regardless of eeprom setting */
3955 if (E1000_READ_REG(&adapter->hw, E1000_STATUS) &
3956 E1000_STATUS_FUNC_1)
3959 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
3960 /* if quad port adapter, disable WoL on all but port A */
3961 if (global_quad_port_a != 0)
3963 /* Reset for multiple quad port adapters */
3964 if (++global_quad_port_a == 4)
3965 global_quad_port_a = 0;
3973 * Enable PCI Wake On Lan capability
3976 lem_enable_wakeup(device_t dev)
3978 struct adapter *adapter = device_get_softc(dev);
3979 struct ifnet *ifp = adapter->ifp;
3980 u32 pmc, ctrl, ctrl_ext, rctl;
3983 if ((pci_find_cap(dev, PCIY_PMG, &pmc) != 0))
3986 /* Advertise the wakeup capability */
3987 ctrl = E1000_READ_REG(&adapter->hw, E1000_CTRL);
3988 ctrl |= (E1000_CTRL_SWDPIN2 | E1000_CTRL_SWDPIN3);
3989 E1000_WRITE_REG(&adapter->hw, E1000_CTRL, ctrl);
3990 E1000_WRITE_REG(&adapter->hw, E1000_WUC, E1000_WUC_PME_EN);
3992 /* Keep the laser running on Fiber adapters */
3993 if (adapter->hw.phy.media_type == e1000_media_type_fiber ||
3994 adapter->hw.phy.media_type == e1000_media_type_internal_serdes) {
3995 ctrl_ext = E1000_READ_REG(&adapter->hw, E1000_CTRL_EXT);
3996 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA;
3997 E1000_WRITE_REG(&adapter->hw, E1000_CTRL_EXT, ctrl_ext);
4001 ** Determine type of Wakeup: note that wol
4002 ** is set with all bits on by default.
4004 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) == 0)
4005 adapter->wol &= ~E1000_WUFC_MAG;
4007 if ((ifp->if_capenable & IFCAP_WOL_MCAST) == 0)
4008 adapter->wol &= ~E1000_WUFC_MC;
4010 rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL);
4011 rctl |= E1000_RCTL_MPE;
4012 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, rctl);
4015 if (adapter->hw.mac.type == e1000_pchlan) {
4016 if (lem_enable_phy_wakeup(adapter))
4019 E1000_WRITE_REG(&adapter->hw, E1000_WUC, E1000_WUC_PME_EN);
4020 E1000_WRITE_REG(&adapter->hw, E1000_WUFC, adapter->wol);
4025 status = pci_read_config(dev, pmc + PCIR_POWER_STATUS, 2);
4026 status &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
4027 if (ifp->if_capenable & IFCAP_WOL)
4028 status |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
4029 pci_write_config(dev, pmc + PCIR_POWER_STATUS, status, 2);
4035 ** WOL in the newer chipset interfaces (pchlan)
4036 ** require thing to be copied into the phy
4039 lem_enable_phy_wakeup(struct adapter *adapter)
4041 struct e1000_hw *hw = &adapter->hw;
4045 /* copy MAC RARs to PHY RARs */
4046 for (int i = 0; i < adapter->hw.mac.rar_entry_count; i++) {
4047 mreg = E1000_READ_REG(hw, E1000_RAL(i));
4048 e1000_write_phy_reg(hw, BM_RAR_L(i), (u16)(mreg & 0xFFFF));
4049 e1000_write_phy_reg(hw, BM_RAR_M(i),
4050 (u16)((mreg >> 16) & 0xFFFF));
4051 mreg = E1000_READ_REG(hw, E1000_RAH(i));
4052 e1000_write_phy_reg(hw, BM_RAR_H(i), (u16)(mreg & 0xFFFF));
4053 e1000_write_phy_reg(hw, BM_RAR_CTRL(i),
4054 (u16)((mreg >> 16) & 0xFFFF));
4057 /* copy MAC MTA to PHY MTA */
4058 for (int i = 0; i < adapter->hw.mac.mta_reg_count; i++) {
4059 mreg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i);
4060 e1000_write_phy_reg(hw, BM_MTA(i), (u16)(mreg & 0xFFFF));
4061 e1000_write_phy_reg(hw, BM_MTA(i) + 1,
4062 (u16)((mreg >> 16) & 0xFFFF));
4065 /* configure PHY Rx Control register */
4066 e1000_read_phy_reg(&adapter->hw, BM_RCTL, &preg);
4067 mreg = E1000_READ_REG(hw, E1000_RCTL);
4068 if (mreg & E1000_RCTL_UPE)
4069 preg |= BM_RCTL_UPE;
4070 if (mreg & E1000_RCTL_MPE)
4071 preg |= BM_RCTL_MPE;
4072 preg &= ~(BM_RCTL_MO_MASK);
4073 if (mreg & E1000_RCTL_MO_3)
4074 preg |= (((mreg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT)
4075 << BM_RCTL_MO_SHIFT);
4076 if (mreg & E1000_RCTL_BAM)
4077 preg |= BM_RCTL_BAM;
4078 if (mreg & E1000_RCTL_PMCF)
4079 preg |= BM_RCTL_PMCF;
4080 mreg = E1000_READ_REG(hw, E1000_CTRL);
4081 if (mreg & E1000_CTRL_RFCE)
4082 preg |= BM_RCTL_RFCE;
4083 e1000_write_phy_reg(&adapter->hw, BM_RCTL, preg);
4085 /* enable PHY wakeup in MAC register */
4086 E1000_WRITE_REG(hw, E1000_WUC,
4087 E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN);
4088 E1000_WRITE_REG(hw, E1000_WUFC, adapter->wol);
4090 /* configure and enable PHY wakeup in PHY registers */
4091 e1000_write_phy_reg(&adapter->hw, BM_WUFC, adapter->wol);
4092 e1000_write_phy_reg(&adapter->hw, BM_WUC, E1000_WUC_PME_EN);
4094 /* activate PHY wakeup */
4095 ret = hw->phy.ops.acquire(hw);
4097 printf("Could not acquire PHY\n");
4100 e1000_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
4101 (BM_WUC_ENABLE_PAGE << IGP_PAGE_SHIFT));
4102 ret = e1000_read_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, &preg);
4104 printf("Could not read PHY page 769\n");
4107 preg |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT;
4108 ret = e1000_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, preg);
4110 printf("Could not set PHY Host Wakeup bit\n");
4112 hw->phy.ops.release(hw);
4118 lem_led_func(void *arg, int onoff)
4120 struct adapter *adapter = arg;
4122 EM_CORE_LOCK(adapter);
4124 e1000_setup_led(&adapter->hw);
4125 e1000_led_on(&adapter->hw);
4127 e1000_led_off(&adapter->hw);
4128 e1000_cleanup_led(&adapter->hw);
4130 EM_CORE_UNLOCK(adapter);
4133 /*********************************************************************
4134 * 82544 Coexistence issue workaround.
4135 * There are 2 issues.
4136 * 1. Transmit Hang issue.
4137 * To detect this issue, following equation can be used...
4138 * SIZE[3:0] + ADDR[2:0] = SUM[3:0].
4139 * If SUM[3:0] is in between 1 to 4, we will have this issue.
4142 * To detect this issue, following equation can be used...
4143 * SIZE[3:0] + ADDR[2:0] = SUM[3:0].
4144 * If SUM[3:0] is in between 9 to c, we will have this issue.
4148 * Make sure we do not have ending address
4149 * as 1,2,3,4(Hang) or 9,a,b,c (DAC)
4151 *************************************************************************/
4153 lem_fill_descriptors (bus_addr_t address, u32 length,
4154 PDESC_ARRAY desc_array)
4156 u32 safe_terminator;
4158 /* Since issue is sensitive to length and address.*/
4159 /* Let us first check the address...*/
4161 desc_array->descriptor[0].address = address;
4162 desc_array->descriptor[0].length = length;
4163 desc_array->elements = 1;
4164 return (desc_array->elements);
4166 safe_terminator = (u32)((((u32)address & 0x7) +
4167 (length & 0xF)) & 0xF);
4168 /* if it does not fall between 0x1 to 0x4 and 0x9 to 0xC then return */
4169 if (safe_terminator == 0 ||
4170 (safe_terminator > 4 &&
4171 safe_terminator < 9) ||
4172 (safe_terminator > 0xC &&
4173 safe_terminator <= 0xF)) {
4174 desc_array->descriptor[0].address = address;
4175 desc_array->descriptor[0].length = length;
4176 desc_array->elements = 1;
4177 return (desc_array->elements);
4180 desc_array->descriptor[0].address = address;
4181 desc_array->descriptor[0].length = length - 4;
4182 desc_array->descriptor[1].address = address + (length - 4);
4183 desc_array->descriptor[1].length = 4;
4184 desc_array->elements = 2;
4185 return (desc_array->elements);
4188 /**********************************************************************
4190 * Update the board statistics counters.
4192 **********************************************************************/
4194 lem_update_stats_counters(struct adapter *adapter)
4198 if(adapter->hw.phy.media_type == e1000_media_type_copper ||
4199 (E1000_READ_REG(&adapter->hw, E1000_STATUS) & E1000_STATUS_LU)) {
4200 adapter->stats.symerrs += E1000_READ_REG(&adapter->hw, E1000_SYMERRS);
4201 adapter->stats.sec += E1000_READ_REG(&adapter->hw, E1000_SEC);
4203 adapter->stats.crcerrs += E1000_READ_REG(&adapter->hw, E1000_CRCERRS);
4204 adapter->stats.mpc += E1000_READ_REG(&adapter->hw, E1000_MPC);
4205 adapter->stats.scc += E1000_READ_REG(&adapter->hw, E1000_SCC);
4206 adapter->stats.ecol += E1000_READ_REG(&adapter->hw, E1000_ECOL);
4208 adapter->stats.mcc += E1000_READ_REG(&adapter->hw, E1000_MCC);
4209 adapter->stats.latecol += E1000_READ_REG(&adapter->hw, E1000_LATECOL);
4210 adapter->stats.colc += E1000_READ_REG(&adapter->hw, E1000_COLC);
4211 adapter->stats.dc += E1000_READ_REG(&adapter->hw, E1000_DC);
4212 adapter->stats.rlec += E1000_READ_REG(&adapter->hw, E1000_RLEC);
4213 adapter->stats.xonrxc += E1000_READ_REG(&adapter->hw, E1000_XONRXC);
4214 adapter->stats.xontxc += E1000_READ_REG(&adapter->hw, E1000_XONTXC);
4215 adapter->stats.xoffrxc += E1000_READ_REG(&adapter->hw, E1000_XOFFRXC);
4216 adapter->stats.xofftxc += E1000_READ_REG(&adapter->hw, E1000_XOFFTXC);
4217 adapter->stats.fcruc += E1000_READ_REG(&adapter->hw, E1000_FCRUC);
4218 adapter->stats.prc64 += E1000_READ_REG(&adapter->hw, E1000_PRC64);
4219 adapter->stats.prc127 += E1000_READ_REG(&adapter->hw, E1000_PRC127);
4220 adapter->stats.prc255 += E1000_READ_REG(&adapter->hw, E1000_PRC255);
4221 adapter->stats.prc511 += E1000_READ_REG(&adapter->hw, E1000_PRC511);
4222 adapter->stats.prc1023 += E1000_READ_REG(&adapter->hw, E1000_PRC1023);
4223 adapter->stats.prc1522 += E1000_READ_REG(&adapter->hw, E1000_PRC1522);
4224 adapter->stats.gprc += E1000_READ_REG(&adapter->hw, E1000_GPRC);
4225 adapter->stats.bprc += E1000_READ_REG(&adapter->hw, E1000_BPRC);
4226 adapter->stats.mprc += E1000_READ_REG(&adapter->hw, E1000_MPRC);
4227 adapter->stats.gptc += E1000_READ_REG(&adapter->hw, E1000_GPTC);
4229 /* For the 64-bit byte counters the low dword must be read first. */
4230 /* Both registers clear on the read of the high dword */
4232 adapter->stats.gorc += E1000_READ_REG(&adapter->hw, E1000_GORCL) +
4233 ((u64)E1000_READ_REG(&adapter->hw, E1000_GORCH) << 32);
4234 adapter->stats.gotc += E1000_READ_REG(&adapter->hw, E1000_GOTCL) +
4235 ((u64)E1000_READ_REG(&adapter->hw, E1000_GOTCH) << 32);
4237 adapter->stats.rnbc += E1000_READ_REG(&adapter->hw, E1000_RNBC);
4238 adapter->stats.ruc += E1000_READ_REG(&adapter->hw, E1000_RUC);
4239 adapter->stats.rfc += E1000_READ_REG(&adapter->hw, E1000_RFC);
4240 adapter->stats.roc += E1000_READ_REG(&adapter->hw, E1000_ROC);
4241 adapter->stats.rjc += E1000_READ_REG(&adapter->hw, E1000_RJC);
4243 adapter->stats.tor += E1000_READ_REG(&adapter->hw, E1000_TORH);
4244 adapter->stats.tot += E1000_READ_REG(&adapter->hw, E1000_TOTH);
4246 adapter->stats.tpr += E1000_READ_REG(&adapter->hw, E1000_TPR);
4247 adapter->stats.tpt += E1000_READ_REG(&adapter->hw, E1000_TPT);
4248 adapter->stats.ptc64 += E1000_READ_REG(&adapter->hw, E1000_PTC64);
4249 adapter->stats.ptc127 += E1000_READ_REG(&adapter->hw, E1000_PTC127);
4250 adapter->stats.ptc255 += E1000_READ_REG(&adapter->hw, E1000_PTC255);
4251 adapter->stats.ptc511 += E1000_READ_REG(&adapter->hw, E1000_PTC511);
4252 adapter->stats.ptc1023 += E1000_READ_REG(&adapter->hw, E1000_PTC1023);
4253 adapter->stats.ptc1522 += E1000_READ_REG(&adapter->hw, E1000_PTC1522);
4254 adapter->stats.mptc += E1000_READ_REG(&adapter->hw, E1000_MPTC);
4255 adapter->stats.bptc += E1000_READ_REG(&adapter->hw, E1000_BPTC);
4257 if (adapter->hw.mac.type >= e1000_82543) {
4258 adapter->stats.algnerrc +=
4259 E1000_READ_REG(&adapter->hw, E1000_ALGNERRC);
4260 adapter->stats.rxerrc +=
4261 E1000_READ_REG(&adapter->hw, E1000_RXERRC);
4262 adapter->stats.tncrs +=
4263 E1000_READ_REG(&adapter->hw, E1000_TNCRS);
4264 adapter->stats.cexterr +=
4265 E1000_READ_REG(&adapter->hw, E1000_CEXTERR);
4266 adapter->stats.tsctc +=
4267 E1000_READ_REG(&adapter->hw, E1000_TSCTC);
4268 adapter->stats.tsctfc +=
4269 E1000_READ_REG(&adapter->hw, E1000_TSCTFC);
4273 ifp->if_collisions = adapter->stats.colc;
4276 ifp->if_ierrors = adapter->dropped_pkts + adapter->stats.rxerrc +
4277 adapter->stats.crcerrs + adapter->stats.algnerrc +
4278 adapter->stats.ruc + adapter->stats.roc +
4279 adapter->stats.mpc + adapter->stats.cexterr;
4282 ifp->if_oerrors = adapter->stats.ecol +
4283 adapter->stats.latecol + adapter->watchdog_events;
4286 /* Export a single 32-bit register via a read-only sysctl. */
4288 lem_sysctl_reg_handler(SYSCTL_HANDLER_ARGS)
4290 struct adapter *adapter;
4293 adapter = oidp->oid_arg1;
4294 val = E1000_READ_REG(&adapter->hw, oidp->oid_arg2);
4295 return (sysctl_handle_int(oidp, &val, 0, req));
4299 * Add sysctl variables, one per statistic, to the system.
4302 lem_add_hw_stats(struct adapter *adapter)
4304 device_t dev = adapter->dev;
4306 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(dev);
4307 struct sysctl_oid *tree = device_get_sysctl_tree(dev);
4308 struct sysctl_oid_list *child = SYSCTL_CHILDREN(tree);
4309 struct e1000_hw_stats *stats = &adapter->stats;
4311 struct sysctl_oid *stat_node;
4312 struct sysctl_oid_list *stat_list;
4314 /* Driver Statistics */
4315 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "mbuf_alloc_fail",
4316 CTLFLAG_RD, &adapter->mbuf_alloc_failed,
4318 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "cluster_alloc_fail",
4319 CTLFLAG_RD, &adapter->mbuf_cluster_failed,
4320 "Std mbuf cluster failed");
4321 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "dropped",
4322 CTLFLAG_RD, &adapter->dropped_pkts,
4323 "Driver dropped packets");
4324 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "tx_dma_fail",
4325 CTLFLAG_RD, &adapter->no_tx_dma_setup,
4326 "Driver tx dma failure in xmit");
4327 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "tx_desc_fail1",
4328 CTLFLAG_RD, &adapter->no_tx_desc_avail1,
4329 "Not enough tx descriptors failure in xmit");
4330 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "tx_desc_fail2",
4331 CTLFLAG_RD, &adapter->no_tx_desc_avail2,
4332 "Not enough tx descriptors failure in xmit");
4333 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "rx_overruns",
4334 CTLFLAG_RD, &adapter->rx_overruns,
4336 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "watchdog_timeouts",
4337 CTLFLAG_RD, &adapter->watchdog_events,
4338 "Watchdog timeouts");
4340 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "device_control",
4341 CTLTYPE_UINT | CTLFLAG_RD, adapter, E1000_CTRL,
4342 lem_sysctl_reg_handler, "IU",
4343 "Device Control Register");
4344 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rx_control",
4345 CTLTYPE_UINT | CTLFLAG_RD, adapter, E1000_RCTL,
4346 lem_sysctl_reg_handler, "IU",
4347 "Receiver Control Register");
4348 SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "fc_high_water",
4349 CTLFLAG_RD, &adapter->hw.fc.high_water, 0,
4350 "Flow Control High Watermark");
4351 SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "fc_low_water",
4352 CTLFLAG_RD, &adapter->hw.fc.low_water, 0,
4353 "Flow Control Low Watermark");
4354 SYSCTL_ADD_UQUAD(ctx, child, OID_AUTO, "fifo_workaround",
4355 CTLFLAG_RD, &adapter->tx_fifo_wrk_cnt,
4356 "TX FIFO workaround events");
4357 SYSCTL_ADD_UQUAD(ctx, child, OID_AUTO, "fifo_reset",
4358 CTLFLAG_RD, &adapter->tx_fifo_reset_cnt,
4361 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "txd_head",
4362 CTLTYPE_UINT | CTLFLAG_RD, adapter, E1000_TDH(0),
4363 lem_sysctl_reg_handler, "IU",
4364 "Transmit Descriptor Head");
4365 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "txd_tail",
4366 CTLTYPE_UINT | CTLFLAG_RD, adapter, E1000_TDT(0),
4367 lem_sysctl_reg_handler, "IU",
4368 "Transmit Descriptor Tail");
4369 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rxd_head",
4370 CTLTYPE_UINT | CTLFLAG_RD, adapter, E1000_RDH(0),
4371 lem_sysctl_reg_handler, "IU",
4372 "Receive Descriptor Head");
4373 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rxd_tail",
4374 CTLTYPE_UINT | CTLFLAG_RD, adapter, E1000_RDT(0),
4375 lem_sysctl_reg_handler, "IU",
4376 "Receive Descriptor Tail");
4379 /* MAC stats get their own sub node */
4381 stat_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "mac_stats",
4382 CTLFLAG_RD, NULL, "Statistics");
4383 stat_list = SYSCTL_CHILDREN(stat_node);
4385 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "excess_coll",
4386 CTLFLAG_RD, &stats->ecol,
4387 "Excessive collisions");
4388 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "single_coll",
4389 CTLFLAG_RD, &stats->scc,
4390 "Single collisions");
4391 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "multiple_coll",
4392 CTLFLAG_RD, &stats->mcc,
4393 "Multiple collisions");
4394 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "late_coll",
4395 CTLFLAG_RD, &stats->latecol,
4397 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "collision_count",
4398 CTLFLAG_RD, &stats->colc,
4400 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "symbol_errors",
4401 CTLFLAG_RD, &adapter->stats.symerrs,
4403 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "sequence_errors",
4404 CTLFLAG_RD, &adapter->stats.sec,
4406 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "defer_count",
4407 CTLFLAG_RD, &adapter->stats.dc,
4409 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "missed_packets",
4410 CTLFLAG_RD, &adapter->stats.mpc,
4412 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_no_buff",
4413 CTLFLAG_RD, &adapter->stats.rnbc,
4414 "Receive No Buffers");
4415 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_undersize",
4416 CTLFLAG_RD, &adapter->stats.ruc,
4417 "Receive Undersize");
4418 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_fragmented",
4419 CTLFLAG_RD, &adapter->stats.rfc,
4420 "Fragmented Packets Received ");
4421 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_oversize",
4422 CTLFLAG_RD, &adapter->stats.roc,
4423 "Oversized Packets Received");
4424 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_jabber",
4425 CTLFLAG_RD, &adapter->stats.rjc,
4427 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_errs",
4428 CTLFLAG_RD, &adapter->stats.rxerrc,
4430 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "crc_errs",
4431 CTLFLAG_RD, &adapter->stats.crcerrs,
4433 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "alignment_errs",
4434 CTLFLAG_RD, &adapter->stats.algnerrc,
4435 "Alignment Errors");
4436 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "coll_ext_errs",
4437 CTLFLAG_RD, &adapter->stats.cexterr,
4438 "Collision/Carrier extension errors");
4439 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "xon_recvd",
4440 CTLFLAG_RD, &adapter->stats.xonrxc,
4442 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "xon_txd",
4443 CTLFLAG_RD, &adapter->stats.xontxc,
4445 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "xoff_recvd",
4446 CTLFLAG_RD, &adapter->stats.xoffrxc,
4448 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "xoff_txd",
4449 CTLFLAG_RD, &adapter->stats.xofftxc,
4450 "XOFF Transmitted");
4452 /* Packet Reception Stats */
4453 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "total_pkts_recvd",
4454 CTLFLAG_RD, &adapter->stats.tpr,
4455 "Total Packets Received ");
4456 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_pkts_recvd",
4457 CTLFLAG_RD, &adapter->stats.gprc,
4458 "Good Packets Received");
4459 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "bcast_pkts_recvd",
4460 CTLFLAG_RD, &adapter->stats.bprc,
4461 "Broadcast Packets Received");
4462 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "mcast_pkts_recvd",
4463 CTLFLAG_RD, &adapter->stats.mprc,
4464 "Multicast Packets Received");
4465 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_64",
4466 CTLFLAG_RD, &adapter->stats.prc64,
4467 "64 byte frames received ");
4468 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_65_127",
4469 CTLFLAG_RD, &adapter->stats.prc127,
4470 "65-127 byte frames received");
4471 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_128_255",
4472 CTLFLAG_RD, &adapter->stats.prc255,
4473 "128-255 byte frames received");
4474 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_256_511",
4475 CTLFLAG_RD, &adapter->stats.prc511,
4476 "256-511 byte frames received");
4477 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_512_1023",
4478 CTLFLAG_RD, &adapter->stats.prc1023,
4479 "512-1023 byte frames received");
4480 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_1024_1522",
4481 CTLFLAG_RD, &adapter->stats.prc1522,
4482 "1023-1522 byte frames received");
4483 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_octets_recvd",
4484 CTLFLAG_RD, &adapter->stats.gorc,
4485 "Good Octets Received");
4487 /* Packet Transmission Stats */
4488 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_octets_txd",
4489 CTLFLAG_RD, &adapter->stats.gotc,
4490 "Good Octets Transmitted");
4491 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "total_pkts_txd",
4492 CTLFLAG_RD, &adapter->stats.tpt,
4493 "Total Packets Transmitted");
4494 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_pkts_txd",
4495 CTLFLAG_RD, &adapter->stats.gptc,
4496 "Good Packets Transmitted");
4497 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "bcast_pkts_txd",
4498 CTLFLAG_RD, &adapter->stats.bptc,
4499 "Broadcast Packets Transmitted");
4500 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "mcast_pkts_txd",
4501 CTLFLAG_RD, &adapter->stats.mptc,
4502 "Multicast Packets Transmitted");
4503 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_64",
4504 CTLFLAG_RD, &adapter->stats.ptc64,
4505 "64 byte frames transmitted ");
4506 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_65_127",
4507 CTLFLAG_RD, &adapter->stats.ptc127,
4508 "65-127 byte frames transmitted");
4509 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_128_255",
4510 CTLFLAG_RD, &adapter->stats.ptc255,
4511 "128-255 byte frames transmitted");
4512 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_256_511",
4513 CTLFLAG_RD, &adapter->stats.ptc511,
4514 "256-511 byte frames transmitted");
4515 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_512_1023",
4516 CTLFLAG_RD, &adapter->stats.ptc1023,
4517 "512-1023 byte frames transmitted");
4518 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_1024_1522",
4519 CTLFLAG_RD, &adapter->stats.ptc1522,
4520 "1024-1522 byte frames transmitted");
4521 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tso_txd",
4522 CTLFLAG_RD, &adapter->stats.tsctc,
4523 "TSO Contexts Transmitted");
4524 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tso_ctx_fail",
4525 CTLFLAG_RD, &adapter->stats.tsctfc,
4526 "TSO Contexts Failed");
4529 /**********************************************************************
4531 * This routine provides a way to dump out the adapter eeprom,
4532 * often a useful debug/service tool. This only dumps the first
4533 * 32 words, stuff that matters is in that extent.
4535 **********************************************************************/
4538 lem_sysctl_nvm_info(SYSCTL_HANDLER_ARGS)
4540 struct adapter *adapter;
4545 error = sysctl_handle_int(oidp, &result, 0, req);
4547 if (error || !req->newptr)
4551 * This value will cause a hex dump of the
4552 * first 32 16-bit words of the EEPROM to
4556 adapter = (struct adapter *)arg1;
4557 lem_print_nvm_info(adapter);
4564 lem_print_nvm_info(struct adapter *adapter)
4569 /* Its a bit crude, but it gets the job done */
4570 printf("\nInterface EEPROM Dump:\n");
4571 printf("Offset\n0x0000 ");
4572 for (i = 0, j = 0; i < 32; i++, j++) {
4573 if (j == 8) { /* Make the offset block */
4575 printf("\n0x00%x0 ",row);
4577 e1000_read_nvm(&adapter->hw, i, 1, &eeprom_data);
4578 printf("%04x ", eeprom_data);
4584 lem_sysctl_int_delay(SYSCTL_HANDLER_ARGS)
4586 struct em_int_delay_info *info;
4587 struct adapter *adapter;
4593 info = (struct em_int_delay_info *)arg1;
4594 usecs = info->value;
4595 error = sysctl_handle_int(oidp, &usecs, 0, req);
4596 if (error != 0 || req->newptr == NULL)
4598 if (usecs < 0 || usecs > EM_TICKS_TO_USECS(65535))
4600 info->value = usecs;
4601 ticks = EM_USECS_TO_TICKS(usecs);
4602 if (info->offset == E1000_ITR) /* units are 256ns here */
4605 adapter = info->adapter;
4607 EM_CORE_LOCK(adapter);
4608 regval = E1000_READ_OFFSET(&adapter->hw, info->offset);
4609 regval = (regval & ~0xffff) | (ticks & 0xffff);
4610 /* Handle a few special cases. */
4611 switch (info->offset) {
4616 adapter->txd_cmd &= ~E1000_TXD_CMD_IDE;
4617 /* Don't write 0 into the TIDV register. */
4620 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
4623 E1000_WRITE_OFFSET(&adapter->hw, info->offset, regval);
4624 EM_CORE_UNLOCK(adapter);
4629 lem_add_int_delay_sysctl(struct adapter *adapter, const char *name,
4630 const char *description, struct em_int_delay_info *info,
4631 int offset, int value)
4633 info->adapter = adapter;
4634 info->offset = offset;
4635 info->value = value;
4636 SYSCTL_ADD_PROC(device_get_sysctl_ctx(adapter->dev),
4637 SYSCTL_CHILDREN(device_get_sysctl_tree(adapter->dev)),
4638 OID_AUTO, name, CTLTYPE_INT|CTLFLAG_RW,
4639 info, 0, lem_sysctl_int_delay, "I", description);
4643 lem_set_flow_cntrl(struct adapter *adapter, const char *name,
4644 const char *description, int *limit, int value)
4647 SYSCTL_ADD_INT(device_get_sysctl_ctx(adapter->dev),
4648 SYSCTL_CHILDREN(device_get_sysctl_tree(adapter->dev)),
4649 OID_AUTO, name, CTLTYPE_INT|CTLFLAG_RW, limit, value, description);
4653 lem_add_rx_process_limit(struct adapter *adapter, const char *name,
4654 const char *description, int *limit, int value)
4657 SYSCTL_ADD_INT(device_get_sysctl_ctx(adapter->dev),
4658 SYSCTL_CHILDREN(device_get_sysctl_tree(adapter->dev)),
4659 OID_AUTO, name, CTLTYPE_INT|CTLFLAG_RW, limit, value, description);