xref: /freebsd/sys/dev/ixl/if_ixl.c (revision edf8578117e8844e02c0121147f45e4609b30680)
1 /******************************************************************************
2 
3   Copyright (c) 2013-2018, Intel Corporation
4   All rights reserved.
5 
6   Redistribution and use in source and binary forms, with or without
7   modification, are permitted provided that the following conditions are met:
8 
9    1. Redistributions of source code must retain the above copyright notice,
10       this list of conditions and the following disclaimer.
11 
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.
15 
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.
19 
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.
31 
32 ******************************************************************************/
33 
34 #include "ixl.h"
35 #include "ixl_pf.h"
36 
37 #ifdef IXL_IW
38 #include "ixl_iw.h"
39 #include "ixl_iw_int.h"
40 #endif
41 
42 #ifdef PCI_IOV
43 #include "ixl_pf_iov.h"
44 #endif
45 
46 /*********************************************************************
47  *  Driver version
48  *********************************************************************/
49 #define IXL_DRIVER_VERSION_MAJOR	2
50 #define IXL_DRIVER_VERSION_MINOR	3
51 #define IXL_DRIVER_VERSION_BUILD	3
52 
53 #define IXL_DRIVER_VERSION_STRING			\
54     __XSTRING(IXL_DRIVER_VERSION_MAJOR) "."		\
55     __XSTRING(IXL_DRIVER_VERSION_MINOR) "."		\
56     __XSTRING(IXL_DRIVER_VERSION_BUILD) "-k"
57 
58 /*********************************************************************
59  *  PCI Device ID Table
60  *
61  *  Used by probe to select devices to load on
62  *
63  *  ( Vendor ID, Device ID, Branding String )
64  *********************************************************************/
65 
66 static const pci_vendor_info_t ixl_vendor_info_array[] =
67 {
68 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_SFP_XL710, "Intel(R) Ethernet Controller X710 for 10GbE SFP+"),
69 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_KX_B, "Intel(R) Ethernet Controller XL710 for 40GbE backplane"),
70 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_KX_C, "Intel(R) Ethernet Controller X710 for 10GbE backplane"),
71 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_QSFP_A, "Intel(R) Ethernet Controller XL710 for 40GbE QSFP+"),
72 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_QSFP_B, "Intel(R) Ethernet Controller XL710 for 40GbE QSFP+"),
73 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_QSFP_C, "Intel(R) Ethernet Controller X710 for 10GbE QSFP+"),
74 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_10G_BASE_T, "Intel(R) Ethernet Controller X710 for 10GBASE-T"),
75 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_10G_BASE_T4, "Intel(R) Ethernet Controller X710/X557-AT 10GBASE-T"),
76 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_KX_X722, "Intel(R) Ethernet Connection X722 for 10GbE backplane"),
77 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_QSFP_X722, "Intel(R) Ethernet Connection X722 for 10GbE QSFP+"),
78 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_SFP_X722, "Intel(R) Ethernet Connection X722 for 10GbE SFP+"),
79 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_1G_BASE_T_X722, "Intel(R) Ethernet Connection X722 for 1GbE"),
80 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_10G_BASE_T_X722, "Intel(R) Ethernet Connection X722 for 10GBASE-T"),
81 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_SFP_I_X722, "Intel(R) Ethernet Connection X722 for 10GbE SFP+"),
82 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_25G_B, "Intel(R) Ethernet Controller XXV710 for 25GbE backplane"),
83 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_25G_SFP28, "Intel(R) Ethernet Controller XXV710 for 25GbE SFP28"),
84 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_10G_BASE_T_BC, "Intel(R) Ethernet Controller X710 for 10GBASE-T"),
85 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_10G_SFP, "Intel(R) Ethernet Controller X710 for 10GbE SFP+"),
86 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_10G_B, "Intel(R) Ethernet Controller X710 for 10GbE backplane"),
87 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_5G_BASE_T_BC, "Intel(R) Ethernet Controller V710 for 5GBASE-T"),
88 	PVIDV(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_1G_BASE_T_BC, "Intel(R) Ethernet Controller I710 for 1GBASE-T"),
89 	/* required last entry */
90 	PVID_END
91 };
92 
93 /*********************************************************************
94  *  Function prototypes
95  *********************************************************************/
96 /*** IFLIB interface ***/
97 static void	*ixl_register(device_t dev);
98 static int	 ixl_if_attach_pre(if_ctx_t ctx);
99 static int	 ixl_if_attach_post(if_ctx_t ctx);
100 static int	 ixl_if_detach(if_ctx_t ctx);
101 static int	 ixl_if_shutdown(if_ctx_t ctx);
102 static int	 ixl_if_suspend(if_ctx_t ctx);
103 static int	 ixl_if_resume(if_ctx_t ctx);
104 static int	 ixl_if_msix_intr_assign(if_ctx_t ctx, int msix);
105 static void	 ixl_if_enable_intr(if_ctx_t ctx);
106 static void	 ixl_if_disable_intr(if_ctx_t ctx);
107 static int	 ixl_if_rx_queue_intr_enable(if_ctx_t ctx, uint16_t rxqid);
108 static int	 ixl_if_tx_queue_intr_enable(if_ctx_t ctx, uint16_t txqid);
109 static int	 ixl_if_tx_queues_alloc(if_ctx_t ctx, caddr_t *vaddrs, uint64_t *paddrs, int ntxqs, int ntxqsets);
110 static int	 ixl_if_rx_queues_alloc(if_ctx_t ctx, caddr_t *vaddrs, uint64_t *paddrs, int nqs, int nqsets);
111 static void	 ixl_if_queues_free(if_ctx_t ctx);
112 static void	 ixl_if_update_admin_status(if_ctx_t ctx);
113 static void	 ixl_if_multi_set(if_ctx_t ctx);
114 static int	 ixl_if_mtu_set(if_ctx_t ctx, uint32_t mtu);
115 static void	 ixl_if_media_status(if_ctx_t ctx, struct ifmediareq *ifmr);
116 static int	 ixl_if_media_change(if_ctx_t ctx);
117 static int	 ixl_if_promisc_set(if_ctx_t ctx, int flags);
118 static void	 ixl_if_timer(if_ctx_t ctx, uint16_t qid);
119 static void	 ixl_if_vlan_register(if_ctx_t ctx, u16 vtag);
120 static void	 ixl_if_vlan_unregister(if_ctx_t ctx, u16 vtag);
121 static uint64_t	 ixl_if_get_counter(if_ctx_t ctx, ift_counter cnt);
122 static int	 ixl_if_i2c_req(if_ctx_t ctx, struct ifi2creq *req);
123 static int	 ixl_if_priv_ioctl(if_ctx_t ctx, u_long command, caddr_t data);
124 static bool	 ixl_if_needs_restart(if_ctx_t ctx, enum iflib_restart_event event);
125 #ifdef PCI_IOV
126 static void	 ixl_if_vflr_handle(if_ctx_t ctx);
127 #endif
128 
129 /*** Other ***/
130 static void	 ixl_save_pf_tunables(struct ixl_pf *);
131 static int	 ixl_allocate_pci_resources(struct ixl_pf *);
132 static void	 ixl_setup_ssctx(struct ixl_pf *pf);
133 static void	 ixl_admin_timer(void *arg);
134 
135 /*********************************************************************
136  *  FreeBSD Device Interface Entry Points
137  *********************************************************************/
138 
139 static device_method_t ixl_methods[] = {
140 	/* Device interface */
141 	DEVMETHOD(device_register, ixl_register),
142 	DEVMETHOD(device_probe, iflib_device_probe),
143 	DEVMETHOD(device_attach, iflib_device_attach),
144 	DEVMETHOD(device_detach, iflib_device_detach),
145 	DEVMETHOD(device_shutdown, iflib_device_shutdown),
146 #ifdef PCI_IOV
147 	DEVMETHOD(pci_iov_init, iflib_device_iov_init),
148 	DEVMETHOD(pci_iov_uninit, iflib_device_iov_uninit),
149 	DEVMETHOD(pci_iov_add_vf, iflib_device_iov_add_vf),
150 #endif
151 	DEVMETHOD_END
152 };
153 
154 static driver_t ixl_driver = {
155 	"ixl", ixl_methods, sizeof(struct ixl_pf),
156 };
157 
158 DRIVER_MODULE(ixl, pci, ixl_driver, 0, 0);
159 IFLIB_PNP_INFO(pci, ixl, ixl_vendor_info_array);
160 MODULE_VERSION(ixl, 3);
161 
162 MODULE_DEPEND(ixl, pci, 1, 1, 1);
163 MODULE_DEPEND(ixl, ether, 1, 1, 1);
164 MODULE_DEPEND(ixl, iflib, 1, 1, 1);
165 
166 static device_method_t ixl_if_methods[] = {
167 	DEVMETHOD(ifdi_attach_pre, ixl_if_attach_pre),
168 	DEVMETHOD(ifdi_attach_post, ixl_if_attach_post),
169 	DEVMETHOD(ifdi_detach, ixl_if_detach),
170 	DEVMETHOD(ifdi_shutdown, ixl_if_shutdown),
171 	DEVMETHOD(ifdi_suspend, ixl_if_suspend),
172 	DEVMETHOD(ifdi_resume, ixl_if_resume),
173 	DEVMETHOD(ifdi_init, ixl_if_init),
174 	DEVMETHOD(ifdi_stop, ixl_if_stop),
175 	DEVMETHOD(ifdi_msix_intr_assign, ixl_if_msix_intr_assign),
176 	DEVMETHOD(ifdi_intr_enable, ixl_if_enable_intr),
177 	DEVMETHOD(ifdi_intr_disable, ixl_if_disable_intr),
178 	DEVMETHOD(ifdi_rx_queue_intr_enable, ixl_if_rx_queue_intr_enable),
179 	DEVMETHOD(ifdi_tx_queue_intr_enable, ixl_if_tx_queue_intr_enable),
180 	DEVMETHOD(ifdi_tx_queues_alloc, ixl_if_tx_queues_alloc),
181 	DEVMETHOD(ifdi_rx_queues_alloc, ixl_if_rx_queues_alloc),
182 	DEVMETHOD(ifdi_queues_free, ixl_if_queues_free),
183 	DEVMETHOD(ifdi_update_admin_status, ixl_if_update_admin_status),
184 	DEVMETHOD(ifdi_multi_set, ixl_if_multi_set),
185 	DEVMETHOD(ifdi_mtu_set, ixl_if_mtu_set),
186 	DEVMETHOD(ifdi_media_status, ixl_if_media_status),
187 	DEVMETHOD(ifdi_media_change, ixl_if_media_change),
188 	DEVMETHOD(ifdi_promisc_set, ixl_if_promisc_set),
189 	DEVMETHOD(ifdi_timer, ixl_if_timer),
190 	DEVMETHOD(ifdi_vlan_register, ixl_if_vlan_register),
191 	DEVMETHOD(ifdi_vlan_unregister, ixl_if_vlan_unregister),
192 	DEVMETHOD(ifdi_get_counter, ixl_if_get_counter),
193 	DEVMETHOD(ifdi_i2c_req, ixl_if_i2c_req),
194 	DEVMETHOD(ifdi_priv_ioctl, ixl_if_priv_ioctl),
195 	DEVMETHOD(ifdi_needs_restart, ixl_if_needs_restart),
196 #ifdef PCI_IOV
197 	DEVMETHOD(ifdi_iov_init, ixl_if_iov_init),
198 	DEVMETHOD(ifdi_iov_uninit, ixl_if_iov_uninit),
199 	DEVMETHOD(ifdi_iov_vf_add, ixl_if_iov_vf_add),
200 	DEVMETHOD(ifdi_vflr_handle, ixl_if_vflr_handle),
201 #endif
202 	// ifdi_led_func
203 	// ifdi_debug
204 	DEVMETHOD_END
205 };
206 
207 static driver_t ixl_if_driver = {
208 	"ixl_if", ixl_if_methods, sizeof(struct ixl_pf)
209 };
210 
211 /*
212 ** TUNEABLE PARAMETERS:
213 */
214 
215 static SYSCTL_NODE(_hw, OID_AUTO, ixl, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
216     "ixl driver parameters");
217 
218 #ifdef IXL_DEBUG_FC
219 /*
220  * Leave this on unless you need to send flow control
221  * frames (or other control frames) from software
222  */
223 static int ixl_enable_tx_fc_filter = 1;
224 TUNABLE_INT("hw.ixl.enable_tx_fc_filter",
225     &ixl_enable_tx_fc_filter);
226 SYSCTL_INT(_hw_ixl, OID_AUTO, enable_tx_fc_filter, CTLFLAG_RDTUN,
227     &ixl_enable_tx_fc_filter, 0,
228     "Filter out packets with Ethertype 0x8808 from being sent out by non-HW sources");
229 #endif
230 
231 #ifdef IXL_DEBUG
232 static int ixl_debug_recovery_mode = 0;
233 TUNABLE_INT("hw.ixl.debug_recovery_mode",
234     &ixl_debug_recovery_mode);
235 SYSCTL_INT(_hw_ixl, OID_AUTO, debug_recovery_mode, CTLFLAG_RDTUN,
236     &ixl_debug_recovery_mode, 0,
237     "Act like when FW entered recovery mode (for debugging)");
238 #endif
239 
240 static int ixl_i2c_access_method = 0;
241 TUNABLE_INT("hw.ixl.i2c_access_method",
242     &ixl_i2c_access_method);
243 SYSCTL_INT(_hw_ixl, OID_AUTO, i2c_access_method, CTLFLAG_RDTUN,
244     &ixl_i2c_access_method, 0,
245     IXL_SYSCTL_HELP_I2C_METHOD);
246 
247 static int ixl_enable_vf_loopback = 1;
248 TUNABLE_INT("hw.ixl.enable_vf_loopback",
249     &ixl_enable_vf_loopback);
250 SYSCTL_INT(_hw_ixl, OID_AUTO, enable_vf_loopback, CTLFLAG_RDTUN,
251     &ixl_enable_vf_loopback, 0,
252     IXL_SYSCTL_HELP_VF_LOOPBACK);
253 
254 /*
255  * Different method for processing TX descriptor
256  * completion.
257  */
258 static int ixl_enable_head_writeback = 1;
259 TUNABLE_INT("hw.ixl.enable_head_writeback",
260     &ixl_enable_head_writeback);
261 SYSCTL_INT(_hw_ixl, OID_AUTO, enable_head_writeback, CTLFLAG_RDTUN,
262     &ixl_enable_head_writeback, 0,
263     "For detecting last completed TX descriptor by hardware, use value written by HW instead of checking descriptors");
264 
265 static int ixl_core_debug_mask = 0;
266 TUNABLE_INT("hw.ixl.core_debug_mask",
267     &ixl_core_debug_mask);
268 SYSCTL_INT(_hw_ixl, OID_AUTO, core_debug_mask, CTLFLAG_RDTUN,
269     &ixl_core_debug_mask, 0,
270     "Display debug statements that are printed in non-shared code");
271 
272 static int ixl_shared_debug_mask = 0;
273 TUNABLE_INT("hw.ixl.shared_debug_mask",
274     &ixl_shared_debug_mask);
275 SYSCTL_INT(_hw_ixl, OID_AUTO, shared_debug_mask, CTLFLAG_RDTUN,
276     &ixl_shared_debug_mask, 0,
277     "Display debug statements that are printed in shared code");
278 
279 #if 0
280 /*
281 ** Controls for Interrupt Throttling
282 **	- true/false for dynamic adjustment
283 ** 	- default values for static ITR
284 */
285 static int ixl_dynamic_rx_itr = 0;
286 TUNABLE_INT("hw.ixl.dynamic_rx_itr", &ixl_dynamic_rx_itr);
287 SYSCTL_INT(_hw_ixl, OID_AUTO, dynamic_rx_itr, CTLFLAG_RDTUN,
288     &ixl_dynamic_rx_itr, 0, "Dynamic RX Interrupt Rate");
289 
290 static int ixl_dynamic_tx_itr = 0;
291 TUNABLE_INT("hw.ixl.dynamic_tx_itr", &ixl_dynamic_tx_itr);
292 SYSCTL_INT(_hw_ixl, OID_AUTO, dynamic_tx_itr, CTLFLAG_RDTUN,
293     &ixl_dynamic_tx_itr, 0, "Dynamic TX Interrupt Rate");
294 #endif
295 
296 static int ixl_rx_itr = IXL_ITR_8K;
297 TUNABLE_INT("hw.ixl.rx_itr", &ixl_rx_itr);
298 SYSCTL_INT(_hw_ixl, OID_AUTO, rx_itr, CTLFLAG_RDTUN,
299     &ixl_rx_itr, 0, "RX Interrupt Rate");
300 
301 static int ixl_tx_itr = IXL_ITR_4K;
302 TUNABLE_INT("hw.ixl.tx_itr", &ixl_tx_itr);
303 SYSCTL_INT(_hw_ixl, OID_AUTO, tx_itr, CTLFLAG_RDTUN,
304     &ixl_tx_itr, 0, "TX Interrupt Rate");
305 
306 static int ixl_flow_control = -1;
307 SYSCTL_INT(_hw_ixl, OID_AUTO, flow_control, CTLFLAG_RDTUN,
308     &ixl_flow_control, 0, "Initial Flow Control setting");
309 
310 #ifdef IXL_IW
311 int ixl_enable_iwarp = 0;
312 TUNABLE_INT("hw.ixl.enable_iwarp", &ixl_enable_iwarp);
313 SYSCTL_INT(_hw_ixl, OID_AUTO, enable_iwarp, CTLFLAG_RDTUN,
314     &ixl_enable_iwarp, 0, "iWARP enabled");
315 
316 int ixl_limit_iwarp_msix = IXL_IW_MAX_MSIX;
317 TUNABLE_INT("hw.ixl.limit_iwarp_msix", &ixl_limit_iwarp_msix);
318 SYSCTL_INT(_hw_ixl, OID_AUTO, limit_iwarp_msix, CTLFLAG_RDTUN,
319     &ixl_limit_iwarp_msix, 0, "Limit MSI-X vectors assigned to iWARP");
320 #endif
321 
322 extern struct if_txrx ixl_txrx_hwb;
323 extern struct if_txrx ixl_txrx_dwb;
324 
325 static struct if_shared_ctx ixl_sctx_init = {
326 	.isc_magic = IFLIB_MAGIC,
327 	.isc_q_align = PAGE_SIZE,
328 	.isc_tx_maxsize = IXL_TSO_SIZE + sizeof(struct ether_vlan_header),
329 	.isc_tx_maxsegsize = IXL_MAX_DMA_SEG_SIZE,
330 	.isc_tso_maxsize = IXL_TSO_SIZE + sizeof(struct ether_vlan_header),
331 	.isc_tso_maxsegsize = IXL_MAX_DMA_SEG_SIZE,
332 	.isc_rx_maxsize = 16384,
333 	.isc_rx_nsegments = IXL_MAX_RX_SEGS,
334 	.isc_rx_maxsegsize = IXL_MAX_DMA_SEG_SIZE,
335 	.isc_nfl = 1,
336 	.isc_ntxqs = 1,
337 	.isc_nrxqs = 1,
338 
339 	.isc_admin_intrcnt = 1,
340 	.isc_vendor_info = ixl_vendor_info_array,
341 	.isc_driver_version = IXL_DRIVER_VERSION_STRING,
342 	.isc_driver = &ixl_if_driver,
343 	.isc_flags = IFLIB_NEED_SCRATCH | IFLIB_NEED_ZERO_CSUM | IFLIB_TSO_INIT_IP | IFLIB_ADMIN_ALWAYS_RUN,
344 
345 	.isc_nrxd_min = {IXL_MIN_RING},
346 	.isc_ntxd_min = {IXL_MIN_RING},
347 	.isc_nrxd_max = {IXL_MAX_RING},
348 	.isc_ntxd_max = {IXL_MAX_RING},
349 	.isc_nrxd_default = {IXL_DEFAULT_RING},
350 	.isc_ntxd_default = {IXL_DEFAULT_RING},
351 };
352 
353 /*** Functions ***/
354 static void *
355 ixl_register(device_t dev)
356 {
357 	return (&ixl_sctx_init);
358 }
359 
360 static int
361 ixl_allocate_pci_resources(struct ixl_pf *pf)
362 {
363 	device_t dev = iflib_get_dev(pf->vsi.ctx);
364 	struct i40e_hw *hw = &pf->hw;
365 	int             rid;
366 
367 	/* Map BAR0 */
368 	rid = PCIR_BAR(0);
369 	pf->pci_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
370 	    &rid, RF_ACTIVE);
371 
372 	if (!(pf->pci_mem)) {
373 		device_printf(dev, "Unable to allocate bus resource: PCI memory\n");
374 		return (ENXIO);
375 	}
376 
377 	/* Save off the PCI information */
378 	hw->vendor_id = pci_get_vendor(dev);
379 	hw->device_id = pci_get_device(dev);
380 	hw->revision_id = pci_read_config(dev, PCIR_REVID, 1);
381 	hw->subsystem_vendor_id =
382 	    pci_read_config(dev, PCIR_SUBVEND_0, 2);
383 	hw->subsystem_device_id =
384 	    pci_read_config(dev, PCIR_SUBDEV_0, 2);
385 
386 	hw->bus.device = pci_get_slot(dev);
387 	hw->bus.func = pci_get_function(dev);
388 
389 	/* Save off register access information */
390 	pf->osdep.mem_bus_space_tag =
391 		rman_get_bustag(pf->pci_mem);
392 	pf->osdep.mem_bus_space_handle =
393 		rman_get_bushandle(pf->pci_mem);
394 	pf->osdep.mem_bus_space_size = rman_get_size(pf->pci_mem);
395 	pf->osdep.flush_reg = I40E_GLGEN_STAT;
396 	pf->osdep.dev = dev;
397 
398 	pf->hw.hw_addr = (u8 *) &pf->osdep.mem_bus_space_handle;
399 	pf->hw.back = &pf->osdep;
400 
401  	return (0);
402 }
403 
404 static void
405 ixl_setup_ssctx(struct ixl_pf *pf)
406 {
407 	if_softc_ctx_t scctx = pf->vsi.shared;
408 	struct i40e_hw *hw = &pf->hw;
409 
410 	if (IXL_PF_IN_RECOVERY_MODE(pf)) {
411 		scctx->isc_ntxqsets_max = scctx->isc_nrxqsets_max = 1;
412 		scctx->isc_ntxqsets = scctx->isc_nrxqsets = 1;
413 	} else if (hw->mac.type == I40E_MAC_X722)
414 		scctx->isc_ntxqsets_max = scctx->isc_nrxqsets_max = 128;
415 	else
416 		scctx->isc_ntxqsets_max = scctx->isc_nrxqsets_max = 64;
417 
418 	if (pf->vsi.enable_head_writeback) {
419 		scctx->isc_txqsizes[0] = roundup2(scctx->isc_ntxd[0]
420 		    * sizeof(struct i40e_tx_desc) + sizeof(u32), DBA_ALIGN);
421 		scctx->isc_txrx = &ixl_txrx_hwb;
422 	} else {
423 		scctx->isc_txqsizes[0] = roundup2(scctx->isc_ntxd[0]
424 		    * sizeof(struct i40e_tx_desc), DBA_ALIGN);
425 		scctx->isc_txrx = &ixl_txrx_dwb;
426 	}
427 
428 	scctx->isc_txrx->ift_legacy_intr = ixl_intr;
429 	scctx->isc_rxqsizes[0] = roundup2(scctx->isc_nrxd[0]
430 	    * sizeof(union i40e_32byte_rx_desc), DBA_ALIGN);
431 	scctx->isc_msix_bar = PCIR_BAR(IXL_MSIX_BAR);
432 	scctx->isc_tx_nsegments = IXL_MAX_TX_SEGS;
433 	scctx->isc_tx_tso_segments_max = IXL_MAX_TSO_SEGS;
434 	scctx->isc_tx_tso_size_max = IXL_TSO_SIZE;
435 	scctx->isc_tx_tso_segsize_max = IXL_MAX_DMA_SEG_SIZE;
436 	scctx->isc_rss_table_size = pf->hw.func_caps.rss_table_size;
437 	scctx->isc_tx_csum_flags = CSUM_OFFLOAD;
438 	scctx->isc_capabilities = scctx->isc_capenable = IXL_CAPS;
439 }
440 
441 static void
442 ixl_admin_timer(void *arg)
443 {
444 	struct ixl_pf *pf = (struct ixl_pf *)arg;
445 
446 	if (ixl_test_state(&pf->state, IXL_STATE_LINK_POLLING)) {
447 		struct i40e_hw *hw = &pf->hw;
448 		sbintime_t stime;
449 		enum i40e_status_code status;
450 
451 		hw->phy.get_link_info = TRUE;
452 		status = i40e_get_link_status(hw, &pf->link_up);
453 		if (status == I40E_SUCCESS) {
454 			ixl_clear_state(&pf->state, IXL_STATE_LINK_POLLING);
455 			/* OS link info is updated in the admin task */
456 		} else {
457 			device_printf(pf->dev,
458 			    "%s: i40e_get_link_status status %s, aq error %s\n",
459 			    __func__, i40e_stat_str(hw, status),
460 			    i40e_aq_str(hw, hw->aq.asq_last_status));
461 			stime = getsbinuptime();
462 			if (stime - pf->link_poll_start > IXL_PF_MAX_LINK_POLL) {
463 				device_printf(pf->dev, "Polling link status failed\n");
464 				ixl_clear_state(&pf->state, IXL_STATE_LINK_POLLING);
465 			}
466 		}
467 	}
468 
469 	/* Fire off the admin task */
470 	iflib_admin_intr_deferred(pf->vsi.ctx);
471 
472 	/* Reschedule the admin timer */
473 	callout_schedule(&pf->admin_timer, hz/2);
474 }
475 
476 static int
477 ixl_attach_pre_recovery_mode(struct ixl_pf *pf)
478 {
479 	struct ixl_vsi *vsi = &pf->vsi;
480 	struct i40e_hw *hw = &pf->hw;
481 	device_t dev = pf->dev;
482 
483 	device_printf(dev, "Firmware recovery mode detected. Limiting functionality. Refer to Intel(R) Ethernet Adapters and Devices User Guide for details on firmware recovery mode.\n");
484 
485 	i40e_get_mac_addr(hw, hw->mac.addr);
486 
487 	if (vsi->shared->isc_intr == IFLIB_INTR_MSIX) {
488 		ixl_configure_intr0_msix(pf);
489 		ixl_enable_intr0(hw);
490 	}
491 
492 	ixl_setup_ssctx(pf);
493 
494 	return (0);
495 }
496 
497 static int
498 ixl_if_attach_pre(if_ctx_t ctx)
499 {
500 	device_t dev;
501 	struct ixl_pf *pf;
502 	struct i40e_hw *hw;
503 	struct ixl_vsi *vsi;
504 	enum i40e_get_fw_lldp_status_resp lldp_status;
505 	struct i40e_filter_control_settings filter;
506 	enum i40e_status_code status;
507 	int error = 0;
508 
509 	dev = iflib_get_dev(ctx);
510 	pf = iflib_get_softc(ctx);
511 
512 	INIT_DBG_DEV(dev, "begin");
513 
514 	vsi = &pf->vsi;
515 	vsi->back = pf;
516 	pf->dev = dev;
517 	hw = &pf->hw;
518 
519 	vsi->dev = dev;
520 	vsi->hw = &pf->hw;
521 	vsi->id = 0;
522 	vsi->num_vlans = 0;
523 	vsi->ctx = ctx;
524 	vsi->media = iflib_get_media(ctx);
525 	vsi->shared = iflib_get_softc_ctx(ctx);
526 
527 	snprintf(pf->admin_mtx_name, sizeof(pf->admin_mtx_name),
528 	    "%s:admin", device_get_nameunit(dev));
529 	mtx_init(&pf->admin_mtx, pf->admin_mtx_name, NULL, MTX_DEF);
530 	callout_init_mtx(&pf->admin_timer, &pf->admin_mtx, 0);
531 
532 	/* Save tunable values */
533 	ixl_save_pf_tunables(pf);
534 
535 	/* Do PCI setup - map BAR0, etc */
536 	if (ixl_allocate_pci_resources(pf)) {
537 		device_printf(dev, "Allocation of PCI resources failed\n");
538 		error = ENXIO;
539 		goto err_pci_res;
540 	}
541 
542 	/* Establish a clean starting point */
543 	i40e_clear_hw(hw);
544 	i40e_set_mac_type(hw);
545 
546 	error = ixl_pf_reset(pf);
547 	if (error)
548 		goto err_out;
549 
550 	/* Initialize the shared code */
551 	status = i40e_init_shared_code(hw);
552 	if (status) {
553 		device_printf(dev, "Unable to initialize shared code, error %s\n",
554 		    i40e_stat_str(hw, status));
555 		error = EIO;
556 		goto err_out;
557 	}
558 
559 	/* Set up the admin queue */
560 	hw->aq.num_arq_entries = IXL_AQ_LEN;
561 	hw->aq.num_asq_entries = IXL_AQ_LEN;
562 	hw->aq.arq_buf_size = IXL_AQ_BUF_SZ;
563 	hw->aq.asq_buf_size = IXL_AQ_BUF_SZ;
564 
565 	status = i40e_init_adminq(hw);
566 	if (status != 0 && status != I40E_ERR_FIRMWARE_API_VERSION) {
567 		device_printf(dev, "Unable to initialize Admin Queue, error %s\n",
568 		    i40e_stat_str(hw, status));
569 		error = EIO;
570 		goto err_out;
571 	}
572 	ixl_print_nvm_version(pf);
573 
574 	if (status == I40E_ERR_FIRMWARE_API_VERSION) {
575 		device_printf(dev, "The driver for the device stopped "
576 		    "because the NVM image is newer than expected.\n");
577 		device_printf(dev, "You must install the most recent version of "
578 		    "the network driver.\n");
579 		error = EIO;
580 		goto err_out;
581 	}
582 
583         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
584 	    hw->aq.api_min_ver > I40E_FW_MINOR_VERSION(hw)) {
585 		device_printf(dev, "The driver for the device detected "
586 		    "a newer version of the NVM image than expected.\n");
587 		device_printf(dev, "Please install the most recent version "
588 		    "of the network driver.\n");
589 	} else if (hw->aq.api_maj_ver == 1 && hw->aq.api_min_ver < 4) {
590 		device_printf(dev, "The driver for the device detected "
591 		    "an older version of the NVM image than expected.\n");
592 		device_printf(dev, "Please update the NVM image.\n");
593 	}
594 
595 	if (IXL_PF_IN_RECOVERY_MODE(pf)) {
596 		error = ixl_attach_pre_recovery_mode(pf);
597 		if (error)
598 			goto err_out;
599 		return (error);
600 	}
601 
602 	/* Clear PXE mode */
603 	i40e_clear_pxe_mode(hw);
604 
605 	/* Get capabilities from the device */
606 	error = ixl_get_hw_capabilities(pf);
607 	if (error) {
608 		device_printf(dev, "get_hw_capabilities failed: %d\n",
609 		    error);
610 		goto err_get_cap;
611 	}
612 
613 	/* Set up host memory cache */
614 	error = ixl_setup_hmc(pf);
615 	if (error)
616 		goto err_mac_hmc;
617 
618 	/* Disable LLDP from the firmware for certain NVM versions */
619 	if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
620 	    (pf->hw.aq.fw_maj_ver < 4)) {
621 		i40e_aq_stop_lldp(hw, true, false, NULL);
622 		ixl_set_state(&pf->state, IXL_STATE_FW_LLDP_DISABLED);
623 	}
624 
625 	/* Try enabling Energy Efficient Ethernet (EEE) mode */
626 	if (i40e_enable_eee(hw, true) == I40E_SUCCESS)
627 		ixl_set_state(&pf->state, IXL_STATE_EEE_ENABLED);
628 	else
629 		ixl_clear_state(&pf->state, IXL_STATE_EEE_ENABLED);
630 
631 	/* Get MAC addresses from hardware */
632 	i40e_get_mac_addr(hw, hw->mac.addr);
633 	error = i40e_validate_mac_addr(hw->mac.addr);
634 	if (error) {
635 		device_printf(dev, "validate_mac_addr failed: %d\n", error);
636 		goto err_mac_hmc;
637 	}
638 	bcopy(hw->mac.addr, hw->mac.perm_addr, ETHER_ADDR_LEN);
639 	iflib_set_mac(ctx, hw->mac.addr);
640 	i40e_get_port_mac_addr(hw, hw->mac.port_addr);
641 
642 	/* Set up the device filtering */
643 	bzero(&filter, sizeof(filter));
644 	filter.enable_ethtype = TRUE;
645 	filter.enable_macvlan = TRUE;
646 	filter.enable_fdir = FALSE;
647 	filter.hash_lut_size = I40E_HASH_LUT_SIZE_512;
648 	if (i40e_set_filter_control(hw, &filter))
649 		device_printf(dev, "i40e_set_filter_control() failed\n");
650 
651 	/* Query device FW LLDP status */
652 	if (i40e_get_fw_lldp_status(hw, &lldp_status) == I40E_SUCCESS) {
653 		if (lldp_status == I40E_GET_FW_LLDP_STATUS_DISABLED) {
654 			ixl_set_state(&pf->state,
655 			    IXL_STATE_FW_LLDP_DISABLED);
656 		} else {
657 			ixl_clear_state(&pf->state,
658 			    IXL_STATE_FW_LLDP_DISABLED);
659 		}
660 	}
661 
662 	/* Tell FW to apply DCB config on link up */
663 	i40e_aq_set_dcb_parameters(hw, true, NULL);
664 
665 	/* Fill out iflib parameters */
666 	ixl_setup_ssctx(pf);
667 
668 	INIT_DBG_DEV(dev, "end");
669 	return (0);
670 
671 err_mac_hmc:
672 	ixl_shutdown_hmc(pf);
673 err_get_cap:
674 	i40e_shutdown_adminq(hw);
675 err_out:
676 	ixl_free_pci_resources(pf);
677 err_pci_res:
678 	mtx_lock(&pf->admin_mtx);
679 	callout_stop(&pf->admin_timer);
680 	mtx_unlock(&pf->admin_mtx);
681 	mtx_destroy(&pf->admin_mtx);
682 	return (error);
683 }
684 
685 static int
686 ixl_if_attach_post(if_ctx_t ctx)
687 {
688 	device_t dev;
689 	struct ixl_pf *pf;
690 	struct i40e_hw *hw;
691 	struct ixl_vsi *vsi;
692 	int error = 0;
693 	enum i40e_status_code status;
694 
695 	dev = iflib_get_dev(ctx);
696 	pf = iflib_get_softc(ctx);
697 
698 	INIT_DBG_DEV(dev, "begin");
699 
700 	vsi = &pf->vsi;
701 	vsi->ifp = iflib_get_ifp(ctx);
702 	hw = &pf->hw;
703 
704 	/* Save off determined number of queues for interface */
705 	vsi->num_rx_queues = vsi->shared->isc_nrxqsets;
706 	vsi->num_tx_queues = vsi->shared->isc_ntxqsets;
707 
708 	/* Setup OS network interface / ifnet */
709 	if (ixl_setup_interface(dev, pf)) {
710 		device_printf(dev, "interface setup failed!\n");
711 		error = EIO;
712 		goto err;
713 	}
714 
715 	if (IXL_PF_IN_RECOVERY_MODE(pf)) {
716 		/* Keep admin queue interrupts active while driver is loaded */
717 		if (vsi->shared->isc_intr == IFLIB_INTR_MSIX) {
718 			ixl_configure_intr0_msix(pf);
719 			ixl_enable_intr0(hw);
720 		}
721 
722 		ixl_add_sysctls_recovery_mode(pf);
723 
724 		/* Start the admin timer */
725 		mtx_lock(&pf->admin_mtx);
726 		callout_reset(&pf->admin_timer, hz/2, ixl_admin_timer, pf);
727 		mtx_unlock(&pf->admin_mtx);
728 		return (0);
729 	}
730 
731 	error = ixl_switch_config(pf);
732 	if (error) {
733 		device_printf(dev, "Initial ixl_switch_config() failed: %d\n",
734 		     error);
735 		goto err;
736 	}
737 
738 	/* Add protocol filters to list */
739 	ixl_init_filters(vsi);
740 
741 	/* Init queue allocation manager */
742 	error = ixl_pf_qmgr_init(&pf->qmgr, hw->func_caps.num_tx_qp);
743 	if (error) {
744 		device_printf(dev, "Failed to init queue manager for PF queues, error %d\n",
745 		    error);
746 		goto err;
747 	}
748 	/* reserve a contiguous allocation for the PF's VSI */
749 	error = ixl_pf_qmgr_alloc_contiguous(&pf->qmgr,
750 	    max(vsi->num_rx_queues, vsi->num_tx_queues), &pf->qtag);
751 	if (error) {
752 		device_printf(dev, "Failed to reserve queues for PF LAN VSI, error %d\n",
753 		    error);
754 		goto err;
755 	}
756 	device_printf(dev, "Allocating %d queues for PF LAN VSI; %d queues active\n",
757 	    pf->qtag.num_allocated, pf->qtag.num_active);
758 
759 	/* Determine link state */
760 	error = ixl_attach_get_link_status(pf);
761 	if (error == EINVAL)
762 		goto err;
763 
764 	/* Limit PHY interrupts to link, autoneg, and modules failure */
765 	status = i40e_aq_set_phy_int_mask(hw, IXL_DEFAULT_PHY_INT_MASK,
766 	    NULL);
767         if (status) {
768 		device_printf(dev, "i40e_aq_set_phy_mask() failed: err %s,"
769 		    " aq_err %s\n", i40e_stat_str(hw, status),
770 		    i40e_aq_str(hw, hw->aq.asq_last_status));
771 		goto err;
772 	}
773 
774 	/* Get the bus configuration and set the shared code */
775 	ixl_get_bus_info(pf);
776 
777 	/* Keep admin queue interrupts active while driver is loaded */
778 	if (vsi->shared->isc_intr == IFLIB_INTR_MSIX) {
779  		ixl_configure_intr0_msix(pf);
780  		ixl_enable_intr0(hw);
781 	}
782 
783 	/* Set initial advertised speed sysctl value */
784 	ixl_set_initial_advertised_speeds(pf);
785 
786 	/* Initialize statistics & add sysctls */
787 	ixl_add_device_sysctls(pf);
788 	ixl_pf_reset_stats(pf);
789 	ixl_update_stats_counters(pf);
790 	ixl_add_hw_stats(pf);
791 
792 	/*
793 	 * Driver may have been reloaded. Ensure that the link state
794 	 * is consistent with current settings.
795 	 */
796 	ixl_set_link(pf, ixl_test_state(&pf->state, IXL_STATE_LINK_ACTIVE_ON_DOWN));
797 
798 	hw->phy.get_link_info = true;
799 	status = i40e_get_link_status(hw, &pf->link_up);
800 	if (status != I40E_SUCCESS) {
801 		device_printf(dev,
802 		    "%s get link status, status: %s aq_err=%s\n",
803 		    __func__, i40e_stat_str(hw, status),
804 		    i40e_aq_str(hw, hw->aq.asq_last_status));
805 		/*
806 		 * Most probably FW has not finished configuring PHY.
807 		 * Retry periodically in a timer callback.
808 		 */
809 		ixl_set_state(&pf->state, IXL_STATE_LINK_POLLING);
810 		pf->link_poll_start = getsbinuptime();
811 	} else
812 		ixl_update_link_status(pf);
813 
814 #ifdef PCI_IOV
815 	ixl_initialize_sriov(pf);
816 #endif
817 
818 #ifdef IXL_IW
819 	if (hw->func_caps.iwarp && ixl_enable_iwarp) {
820 		pf->iw_enabled = (pf->iw_msix > 0) ? true : false;
821 		if (pf->iw_enabled) {
822 			error = ixl_iw_pf_attach(pf);
823 			if (error) {
824 				device_printf(dev,
825 				    "interfacing to iWARP driver failed: %d\n",
826 				    error);
827 				goto err;
828 			} else
829 				device_printf(dev, "iWARP ready\n");
830 		} else
831 			device_printf(dev, "iWARP disabled on this device "
832 			    "(no MSI-X vectors)\n");
833 	} else {
834 		pf->iw_enabled = false;
835 		device_printf(dev, "The device is not iWARP enabled\n");
836 	}
837 #endif
838 	/* Start the admin timer */
839 	mtx_lock(&pf->admin_mtx);
840 	callout_reset(&pf->admin_timer, hz/2, ixl_admin_timer, pf);
841 	mtx_unlock(&pf->admin_mtx);
842 
843 	INIT_DBG_DEV(dev, "end");
844 	return (0);
845 
846 err:
847 	INIT_DEBUGOUT("end: error %d", error);
848 	/* ixl_if_detach() is called on error from this */
849 	return (error);
850 }
851 
852 /**
853  * XXX: iflib always ignores the return value of detach()
854  * -> This means that this isn't allowed to fail
855  */
856 static int
857 ixl_if_detach(if_ctx_t ctx)
858 {
859 	struct ixl_pf *pf = iflib_get_softc(ctx);
860 	struct ixl_vsi *vsi = &pf->vsi;
861 	struct i40e_hw *hw = &pf->hw;
862 	device_t dev = pf->dev;
863 	enum i40e_status_code	status;
864 #ifdef IXL_IW
865 	int			error;
866 #endif
867 
868 	INIT_DBG_DEV(dev, "begin");
869 
870 	/* Stop the admin timer */
871 	mtx_lock(&pf->admin_mtx);
872 	callout_stop(&pf->admin_timer);
873 	mtx_unlock(&pf->admin_mtx);
874 	mtx_destroy(&pf->admin_mtx);
875 
876 #ifdef IXL_IW
877 	if (ixl_enable_iwarp && pf->iw_enabled) {
878 		error = ixl_iw_pf_detach(pf);
879 		if (error == EBUSY) {
880 			device_printf(dev, "iwarp in use; stop it first.\n");
881 			//return (error);
882 		}
883 	}
884 #endif
885 	/* Remove all previously allocated media types */
886 	ifmedia_removeall(vsi->media);
887 
888 	/* Shutdown LAN HMC */
889 	ixl_shutdown_hmc(pf);
890 
891 	/* Shutdown admin queue */
892 	ixl_disable_intr0(hw);
893 	status = i40e_shutdown_adminq(hw);
894 	if (status)
895 		device_printf(dev,
896 		    "i40e_shutdown_adminq() failed with status %s\n",
897 		    i40e_stat_str(hw, status));
898 
899 	ixl_pf_qmgr_destroy(&pf->qmgr);
900 	ixl_free_pci_resources(pf);
901 	ixl_free_filters(&vsi->ftl);
902 	INIT_DBG_DEV(dev, "end");
903 	return (0);
904 }
905 
906 static int
907 ixl_if_shutdown(if_ctx_t ctx)
908 {
909 	int error = 0;
910 
911 	INIT_DEBUGOUT("ixl_if_shutdown: begin");
912 
913 	/* TODO: Call ixl_if_stop()? */
914 
915 	/* TODO: Then setup low power mode */
916 
917 	return (error);
918 }
919 
920 static int
921 ixl_if_suspend(if_ctx_t ctx)
922 {
923 	int error = 0;
924 
925 	INIT_DEBUGOUT("ixl_if_suspend: begin");
926 
927 	/* TODO: Call ixl_if_stop()? */
928 
929 	/* TODO: Then setup low power mode */
930 
931 	return (error);
932 }
933 
934 static int
935 ixl_if_resume(if_ctx_t ctx)
936 {
937 	if_t ifp = iflib_get_ifp(ctx);
938 
939 	INIT_DEBUGOUT("ixl_if_resume: begin");
940 
941 	/* Read & clear wake-up registers */
942 
943 	/* Required after D3->D0 transition */
944 	if (if_getflags(ifp) & IFF_UP)
945 		ixl_if_init(ctx);
946 
947 	return (0);
948 }
949 
950 void
951 ixl_if_init(if_ctx_t ctx)
952 {
953 	struct ixl_pf *pf = iflib_get_softc(ctx);
954 	struct ixl_vsi *vsi = &pf->vsi;
955 	struct i40e_hw	*hw = &pf->hw;
956 	if_t ifp = iflib_get_ifp(ctx);
957 	device_t 	dev = iflib_get_dev(ctx);
958 	u8		tmpaddr[ETHER_ADDR_LEN];
959 	int		ret;
960 
961 	if (IXL_PF_IN_RECOVERY_MODE(pf))
962 		return;
963 	/*
964 	 * If the aq is dead here, it probably means something outside of the driver
965 	 * did something to the adapter, like a PF reset.
966 	 * So, rebuild the driver's state here if that occurs.
967 	 */
968 	if (!i40e_check_asq_alive(&pf->hw)) {
969 		device_printf(dev, "Admin Queue is down; resetting...\n");
970 		ixl_teardown_hw_structs(pf);
971 		ixl_rebuild_hw_structs_after_reset(pf, false);
972 	}
973 
974 	/* Get the latest mac address... User might use a LAA */
975 	bcopy(if_getlladdr(vsi->ifp), tmpaddr, ETH_ALEN);
976 	if (!ixl_ether_is_equal(hw->mac.addr, tmpaddr) &&
977 	    (i40e_validate_mac_addr(tmpaddr) == I40E_SUCCESS)) {
978 		ixl_del_all_vlan_filters(vsi, hw->mac.addr);
979 		bcopy(tmpaddr, hw->mac.addr, ETH_ALEN);
980 		ret = i40e_aq_mac_address_write(hw,
981 		    I40E_AQC_WRITE_TYPE_LAA_ONLY,
982 		    hw->mac.addr, NULL);
983 		if (ret) {
984 			device_printf(dev, "LLA address change failed!!\n");
985 			return;
986 		}
987 		/*
988 		 * New filters are configured by ixl_reconfigure_filters
989 		 * at the end of ixl_init_locked.
990 		 */
991 	}
992 
993 	iflib_set_mac(ctx, hw->mac.addr);
994 
995 	/* Prepare the VSI: rings, hmc contexts, etc... */
996 	if (ixl_initialize_vsi(vsi)) {
997 		device_printf(dev, "initialize vsi failed!!\n");
998 		return;
999 	}
1000 
1001 	ixl_set_link(pf, true);
1002 
1003 	/* Reconfigure multicast filters in HW */
1004 	ixl_if_multi_set(ctx);
1005 
1006 	/* Set up RSS */
1007 	ixl_config_rss(pf);
1008 
1009 	/* Set up MSI-X routing and the ITR settings */
1010 	if (vsi->shared->isc_intr == IFLIB_INTR_MSIX) {
1011 		ixl_configure_queue_intr_msix(pf);
1012 		ixl_configure_itr(pf);
1013 	} else
1014 		ixl_configure_legacy(pf);
1015 
1016 	if (vsi->enable_head_writeback)
1017 		ixl_init_tx_cidx(vsi);
1018 	else
1019 		ixl_init_tx_rsqs(vsi);
1020 
1021 	ixl_enable_rings(vsi);
1022 
1023 	i40e_aq_set_default_vsi(hw, vsi->seid, NULL);
1024 
1025 	/* Re-add configure filters to HW */
1026 	ixl_reconfigure_filters(vsi);
1027 
1028 	/* Configure promiscuous mode */
1029 	ixl_if_promisc_set(ctx, if_getflags(ifp));
1030 
1031 #ifdef IXL_IW
1032 	if (ixl_enable_iwarp && pf->iw_enabled) {
1033 		ret = ixl_iw_pf_init(pf);
1034 		if (ret)
1035 			device_printf(dev,
1036 			    "initialize iwarp failed, code %d\n", ret);
1037 	}
1038 #endif
1039 }
1040 
1041 void
1042 ixl_if_stop(if_ctx_t ctx)
1043 {
1044 	struct ixl_pf *pf = iflib_get_softc(ctx);
1045 	if_t ifp = iflib_get_ifp(ctx);
1046 	struct ixl_vsi *vsi = &pf->vsi;
1047 
1048 	INIT_DEBUGOUT("ixl_if_stop: begin\n");
1049 
1050 	if (IXL_PF_IN_RECOVERY_MODE(pf))
1051 		return;
1052 
1053 	// TODO: This may need to be reworked
1054 #ifdef IXL_IW
1055 	/* Stop iWARP device */
1056 	if (ixl_enable_iwarp && pf->iw_enabled)
1057 		ixl_iw_pf_stop(pf);
1058 #endif
1059 
1060 	ixl_disable_rings_intr(vsi);
1061 	ixl_disable_rings(pf, vsi, &pf->qtag);
1062 
1063 	/*
1064 	 * Don't set link state if only reconfiguring
1065 	 * e.g. on MTU change.
1066 	 */
1067 	if ((if_getflags(ifp) & IFF_UP) == 0 &&
1068 	    !ixl_test_state(&pf->state, IXL_STATE_LINK_ACTIVE_ON_DOWN))
1069 		ixl_set_link(pf, false);
1070 }
1071 
1072 static int
1073 ixl_if_msix_intr_assign(if_ctx_t ctx, int msix)
1074 {
1075 	struct ixl_pf *pf = iflib_get_softc(ctx);
1076 	struct ixl_vsi *vsi = &pf->vsi;
1077 	struct ixl_rx_queue *rx_que = vsi->rx_queues;
1078 	struct ixl_tx_queue *tx_que = vsi->tx_queues;
1079 	int err, i, rid, vector = 0;
1080 	char buf[16];
1081 
1082 	MPASS(vsi->shared->isc_nrxqsets > 0);
1083 	MPASS(vsi->shared->isc_ntxqsets > 0);
1084 
1085 	/* Admin Que must use vector 0*/
1086 	rid = vector + 1;
1087 	err = iflib_irq_alloc_generic(ctx, &vsi->irq, rid, IFLIB_INTR_ADMIN,
1088 	    ixl_msix_adminq, pf, 0, "aq");
1089 	if (err) {
1090 		iflib_irq_free(ctx, &vsi->irq);
1091 		device_printf(iflib_get_dev(ctx),
1092 		    "Failed to register Admin Que handler");
1093 		return (err);
1094 	}
1095 
1096 #ifdef PCI_IOV
1097 	/* Create soft IRQ for handling VFLRs */
1098 	iflib_softirq_alloc_generic(ctx, NULL, IFLIB_INTR_IOV, pf, 0, "iov");
1099 #endif
1100 
1101 	/* Now set up the stations */
1102 	for (i = 0, vector = 1; i < vsi->shared->isc_nrxqsets; i++, vector++, rx_que++) {
1103 		rid = vector + 1;
1104 
1105 		snprintf(buf, sizeof(buf), "rxq%d", i);
1106 		err = iflib_irq_alloc_generic(ctx, &rx_que->que_irq, rid,
1107 		    IFLIB_INTR_RXTX, ixl_msix_que, rx_que, rx_que->rxr.me, buf);
1108 		/* XXX: Does the driver work as expected if there are fewer num_rx_queues than
1109 		 * what's expected in the iflib context? */
1110 		if (err) {
1111 			device_printf(iflib_get_dev(ctx),
1112 			    "Failed to allocate queue RX int vector %d, err: %d\n", i, err);
1113 			vsi->num_rx_queues = i + 1;
1114 			goto fail;
1115 		}
1116 		rx_que->msix = vector;
1117 	}
1118 
1119 	bzero(buf, sizeof(buf));
1120 
1121 	for (i = 0; i < vsi->shared->isc_ntxqsets; i++, tx_que++) {
1122 		snprintf(buf, sizeof(buf), "txq%d", i);
1123 		iflib_softirq_alloc_generic(ctx,
1124 		    &vsi->rx_queues[i % vsi->shared->isc_nrxqsets].que_irq,
1125 		    IFLIB_INTR_TX, tx_que, tx_que->txr.me, buf);
1126 
1127 		/* TODO: Maybe call a strategy function for this to figure out which
1128 		* interrupts to map Tx queues to. I don't know if there's an immediately
1129 		* better way than this other than a user-supplied map, though. */
1130 		tx_que->msix = (i % vsi->shared->isc_nrxqsets) + 1;
1131 	}
1132 
1133 	return (0);
1134 fail:
1135 	iflib_irq_free(ctx, &vsi->irq);
1136 	rx_que = vsi->rx_queues;
1137 	for (int i = 0; i < vsi->num_rx_queues; i++, rx_que++)
1138 		iflib_irq_free(ctx, &rx_que->que_irq);
1139 	return (err);
1140 }
1141 
1142 /*
1143  * Enable all interrupts
1144  *
1145  * Called in:
1146  * iflib_init_locked, after ixl_if_init()
1147  */
1148 static void
1149 ixl_if_enable_intr(if_ctx_t ctx)
1150 {
1151 	struct ixl_pf *pf = iflib_get_softc(ctx);
1152 	struct ixl_vsi *vsi = &pf->vsi;
1153 	struct i40e_hw		*hw = vsi->hw;
1154 	struct ixl_rx_queue	*que = vsi->rx_queues;
1155 
1156 	ixl_enable_intr0(hw);
1157 	/* Enable queue interrupts */
1158 	for (int i = 0; i < vsi->num_rx_queues; i++, que++)
1159 		/* TODO: Queue index parameter is probably wrong */
1160 		ixl_enable_queue(hw, que->rxr.me);
1161 }
1162 
1163 /*
1164  * Disable queue interrupts
1165  *
1166  * Other interrupt causes need to remain active.
1167  */
1168 static void
1169 ixl_if_disable_intr(if_ctx_t ctx)
1170 {
1171 	struct ixl_pf *pf = iflib_get_softc(ctx);
1172 	struct ixl_vsi *vsi = &pf->vsi;
1173 	struct i40e_hw		*hw = vsi->hw;
1174 	struct ixl_rx_queue	*rx_que = vsi->rx_queues;
1175 
1176 	if (vsi->shared->isc_intr == IFLIB_INTR_MSIX) {
1177 		for (int i = 0; i < vsi->num_rx_queues; i++, rx_que++)
1178 			ixl_disable_queue(hw, rx_que->msix - 1);
1179 	} else {
1180 		// Set PFINT_LNKLST0 FIRSTQ_INDX to 0x7FF
1181 		// stops queues from triggering interrupts
1182 		wr32(hw, I40E_PFINT_LNKLST0, 0x7FF);
1183 	}
1184 }
1185 
1186 static int
1187 ixl_if_rx_queue_intr_enable(if_ctx_t ctx, uint16_t rxqid)
1188 {
1189 	struct ixl_pf *pf = iflib_get_softc(ctx);
1190 	struct ixl_vsi *vsi = &pf->vsi;
1191 	struct i40e_hw		*hw = vsi->hw;
1192 	struct ixl_rx_queue	*rx_que = &vsi->rx_queues[rxqid];
1193 
1194 	ixl_enable_queue(hw, rx_que->msix - 1);
1195 	return (0);
1196 }
1197 
1198 static int
1199 ixl_if_tx_queue_intr_enable(if_ctx_t ctx, uint16_t txqid)
1200 {
1201 	struct ixl_pf *pf = iflib_get_softc(ctx);
1202 	struct ixl_vsi *vsi = &pf->vsi;
1203 	struct i40e_hw *hw = vsi->hw;
1204 	struct ixl_tx_queue *tx_que = &vsi->tx_queues[txqid];
1205 
1206 	ixl_enable_queue(hw, tx_que->msix - 1);
1207 	return (0);
1208 }
1209 
1210 static int
1211 ixl_if_tx_queues_alloc(if_ctx_t ctx, caddr_t *vaddrs, uint64_t *paddrs, int ntxqs, int ntxqsets)
1212 {
1213 	struct ixl_pf *pf = iflib_get_softc(ctx);
1214 	struct ixl_vsi *vsi = &pf->vsi;
1215 	if_softc_ctx_t scctx = vsi->shared;
1216 	struct ixl_tx_queue *que;
1217 	int i, j, error = 0;
1218 
1219 	MPASS(scctx->isc_ntxqsets > 0);
1220 	MPASS(ntxqs == 1);
1221 	MPASS(scctx->isc_ntxqsets == ntxqsets);
1222 
1223 	/* Allocate queue structure memory */
1224 	if (!(vsi->tx_queues =
1225 	    (struct ixl_tx_queue *) malloc(sizeof(struct ixl_tx_queue) *ntxqsets, M_IXL, M_NOWAIT | M_ZERO))) {
1226 		device_printf(iflib_get_dev(ctx), "Unable to allocate TX ring memory\n");
1227 		return (ENOMEM);
1228 	}
1229 
1230 	for (i = 0, que = vsi->tx_queues; i < ntxqsets; i++, que++) {
1231 		struct tx_ring *txr = &que->txr;
1232 
1233 		txr->me = i;
1234 		que->vsi = vsi;
1235 
1236 		if (!vsi->enable_head_writeback) {
1237 			/* Allocate report status array */
1238 			if (!(txr->tx_rsq = malloc(sizeof(qidx_t) * scctx->isc_ntxd[0], M_IXL, M_NOWAIT))) {
1239 				device_printf(iflib_get_dev(ctx), "failed to allocate tx_rsq memory\n");
1240 				error = ENOMEM;
1241 				goto fail;
1242 			}
1243 			/* Init report status array */
1244 			for (j = 0; j < scctx->isc_ntxd[0]; j++)
1245 				txr->tx_rsq[j] = QIDX_INVALID;
1246 		}
1247 		/* get the virtual and physical address of the hardware queues */
1248 		txr->tail = I40E_QTX_TAIL(txr->me);
1249 		txr->tx_base = (struct i40e_tx_desc *)vaddrs[i * ntxqs];
1250 		txr->tx_paddr = paddrs[i * ntxqs];
1251 		txr->que = que;
1252 	}
1253 
1254 	return (0);
1255 fail:
1256 	ixl_if_queues_free(ctx);
1257 	return (error);
1258 }
1259 
1260 static int
1261 ixl_if_rx_queues_alloc(if_ctx_t ctx, caddr_t *vaddrs, uint64_t *paddrs, int nrxqs, int nrxqsets)
1262 {
1263 	struct ixl_pf *pf = iflib_get_softc(ctx);
1264 	struct ixl_vsi *vsi = &pf->vsi;
1265 	struct ixl_rx_queue *que;
1266 	int i, error = 0;
1267 
1268 #ifdef INVARIANTS
1269 	if_softc_ctx_t scctx = vsi->shared;
1270 	MPASS(scctx->isc_nrxqsets > 0);
1271 	MPASS(nrxqs == 1);
1272 	MPASS(scctx->isc_nrxqsets == nrxqsets);
1273 #endif
1274 
1275 	/* Allocate queue structure memory */
1276 	if (!(vsi->rx_queues =
1277 	    (struct ixl_rx_queue *) malloc(sizeof(struct ixl_rx_queue) *
1278 	    nrxqsets, M_IXL, M_NOWAIT | M_ZERO))) {
1279 		device_printf(iflib_get_dev(ctx), "Unable to allocate RX ring memory\n");
1280 		error = ENOMEM;
1281 		goto fail;
1282 	}
1283 
1284 	for (i = 0, que = vsi->rx_queues; i < nrxqsets; i++, que++) {
1285 		struct rx_ring *rxr = &que->rxr;
1286 
1287 		rxr->me = i;
1288 		que->vsi = vsi;
1289 
1290 		/* get the virtual and physical address of the hardware queues */
1291 		rxr->tail = I40E_QRX_TAIL(rxr->me);
1292 		rxr->rx_base = (union i40e_rx_desc *)vaddrs[i * nrxqs];
1293 		rxr->rx_paddr = paddrs[i * nrxqs];
1294 		rxr->que = que;
1295 	}
1296 
1297 	return (0);
1298 fail:
1299 	ixl_if_queues_free(ctx);
1300 	return (error);
1301 }
1302 
1303 static void
1304 ixl_if_queues_free(if_ctx_t ctx)
1305 {
1306 	struct ixl_pf *pf = iflib_get_softc(ctx);
1307 	struct ixl_vsi *vsi = &pf->vsi;
1308 
1309 	if (vsi->tx_queues != NULL && !vsi->enable_head_writeback) {
1310 		struct ixl_tx_queue *que;
1311 		int i = 0;
1312 
1313 		for (i = 0, que = vsi->tx_queues; i < vsi->num_tx_queues; i++, que++) {
1314 			struct tx_ring *txr = &que->txr;
1315 			if (txr->tx_rsq != NULL) {
1316 				free(txr->tx_rsq, M_IXL);
1317 				txr->tx_rsq = NULL;
1318 			}
1319 		}
1320 	}
1321 
1322 	if (vsi->tx_queues != NULL) {
1323 		free(vsi->tx_queues, M_IXL);
1324 		vsi->tx_queues = NULL;
1325 	}
1326 	if (vsi->rx_queues != NULL) {
1327 		free(vsi->rx_queues, M_IXL);
1328 		vsi->rx_queues = NULL;
1329 	}
1330 
1331 	if (!IXL_PF_IN_RECOVERY_MODE(pf))
1332 		sysctl_ctx_free(&vsi->sysctl_ctx);
1333 }
1334 
1335 void
1336 ixl_update_link_status(struct ixl_pf *pf)
1337 {
1338 	struct ixl_vsi *vsi = &pf->vsi;
1339 	struct i40e_hw *hw = &pf->hw;
1340 	u64 baudrate;
1341 
1342 	if (pf->link_up) {
1343 		if (vsi->link_active == FALSE) {
1344 			vsi->link_active = TRUE;
1345 			baudrate = ixl_max_aq_speed_to_value(hw->phy.link_info.link_speed);
1346 			iflib_link_state_change(vsi->ctx, LINK_STATE_UP, baudrate);
1347 			ixl_link_up_msg(pf);
1348 #ifdef PCI_IOV
1349 			ixl_broadcast_link_state(pf);
1350 #endif
1351 		}
1352 	} else { /* Link down */
1353 		if (vsi->link_active == TRUE) {
1354 			vsi->link_active = FALSE;
1355 			iflib_link_state_change(vsi->ctx, LINK_STATE_DOWN, 0);
1356 #ifdef PCI_IOV
1357 			ixl_broadcast_link_state(pf);
1358 #endif
1359 		}
1360 	}
1361 }
1362 
1363 static void
1364 ixl_handle_lan_overflow_event(struct ixl_pf *pf, struct i40e_arq_event_info *e)
1365 {
1366 	device_t dev = pf->dev;
1367 	u32 rxq_idx, qtx_ctl;
1368 
1369 	rxq_idx = (e->desc.params.external.param0 & I40E_PRTDCB_RUPTQ_RXQNUM_MASK) >>
1370 	    I40E_PRTDCB_RUPTQ_RXQNUM_SHIFT;
1371 	qtx_ctl = e->desc.params.external.param1;
1372 
1373 	device_printf(dev, "LAN overflow event: global rxq_idx %d\n", rxq_idx);
1374 	device_printf(dev, "LAN overflow event: QTX_CTL 0x%08x\n", qtx_ctl);
1375 }
1376 
1377 static int
1378 ixl_process_adminq(struct ixl_pf *pf, u16 *pending)
1379 {
1380 	enum i40e_status_code status = I40E_SUCCESS;
1381 	struct i40e_arq_event_info event;
1382 	struct i40e_hw *hw = &pf->hw;
1383 	device_t dev = pf->dev;
1384 	u16 opcode;
1385 	u32 loop = 0, reg;
1386 
1387 	event.buf_len = IXL_AQ_BUF_SZ;
1388 	event.msg_buf = malloc(event.buf_len, M_IXL, M_NOWAIT | M_ZERO);
1389 	if (!event.msg_buf) {
1390 		device_printf(dev, "%s: Unable to allocate memory for Admin"
1391 		    " Queue event!\n", __func__);
1392 		return (ENOMEM);
1393 	}
1394 
1395 	/* clean and process any events */
1396 	do {
1397 		status = i40e_clean_arq_element(hw, &event, pending);
1398 		if (status)
1399 			break;
1400 		opcode = LE16_TO_CPU(event.desc.opcode);
1401 		ixl_dbg(pf, IXL_DBG_AQ,
1402 		    "Admin Queue event: %#06x\n", opcode);
1403 		switch (opcode) {
1404 		case i40e_aqc_opc_get_link_status:
1405 			ixl_link_event(pf, &event);
1406 			break;
1407 		case i40e_aqc_opc_send_msg_to_pf:
1408 #ifdef PCI_IOV
1409 			ixl_handle_vf_msg(pf, &event);
1410 #endif
1411 			break;
1412 		/*
1413 		 * This should only occur on no-drop queues, which
1414 		 * aren't currently configured.
1415 		 */
1416 		case i40e_aqc_opc_event_lan_overflow:
1417 			ixl_handle_lan_overflow_event(pf, &event);
1418 			break;
1419 		default:
1420 			break;
1421 		}
1422 	} while (*pending && (loop++ < IXL_ADM_LIMIT));
1423 
1424 	free(event.msg_buf, M_IXL);
1425 
1426 	/* Re-enable admin queue interrupt cause */
1427 	reg = rd32(hw, I40E_PFINT_ICR0_ENA);
1428 	reg |= I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
1429 	wr32(hw, I40E_PFINT_ICR0_ENA, reg);
1430 
1431 	return (status);
1432 }
1433 
1434 static void
1435 ixl_if_update_admin_status(if_ctx_t ctx)
1436 {
1437 	struct ixl_pf	*pf = iflib_get_softc(ctx);
1438 	struct i40e_hw	*hw = &pf->hw;
1439 	u16		pending;
1440 
1441 	if (IXL_PF_IS_RESETTING(pf))
1442 		ixl_handle_empr_reset(pf);
1443 
1444 	/*
1445 	 * Admin Queue is shut down while handling reset.
1446 	 * Don't proceed if it hasn't been re-initialized
1447 	 * e.g due to an issue with new FW.
1448 	 */
1449 	if (!i40e_check_asq_alive(&pf->hw))
1450 		return;
1451 
1452 	if (ixl_test_state(&pf->state, IXL_STATE_MDD_PENDING))
1453 		ixl_handle_mdd_event(pf);
1454 
1455 	ixl_process_adminq(pf, &pending);
1456 	ixl_update_link_status(pf);
1457 
1458 	/*
1459 	 * If there are still messages to process, reschedule ourselves.
1460 	 * Otherwise, re-enable our interrupt and go to sleep.
1461 	 */
1462 	if (pending > 0)
1463 		iflib_admin_intr_deferred(ctx);
1464 	else
1465 		ixl_enable_intr0(hw);
1466 }
1467 
1468 static void
1469 ixl_if_multi_set(if_ctx_t ctx)
1470 {
1471 	struct ixl_pf *pf = iflib_get_softc(ctx);
1472 	struct ixl_vsi *vsi = &pf->vsi;
1473 	struct i40e_hw *hw = vsi->hw;
1474 	int mcnt;
1475 
1476 	IOCTL_DEBUGOUT("ixl_if_multi_set: begin");
1477 
1478 	/* Delete filters for removed multicast addresses */
1479 	ixl_del_multi(vsi, false);
1480 
1481 	mcnt = min(if_llmaddr_count(iflib_get_ifp(ctx)), MAX_MULTICAST_ADDR);
1482 	if (__predict_false(mcnt == MAX_MULTICAST_ADDR)) {
1483 		i40e_aq_set_vsi_multicast_promiscuous(hw,
1484 		    vsi->seid, TRUE, NULL);
1485 		ixl_del_multi(vsi, true);
1486 		return;
1487 	}
1488 
1489 	ixl_add_multi(vsi);
1490 	IOCTL_DEBUGOUT("ixl_if_multi_set: end");
1491 }
1492 
1493 static int
1494 ixl_if_mtu_set(if_ctx_t ctx, uint32_t mtu)
1495 {
1496 	struct ixl_pf *pf = iflib_get_softc(ctx);
1497 	struct ixl_vsi *vsi = &pf->vsi;
1498 
1499 	IOCTL_DEBUGOUT("ioctl: SIOCSIFMTU (Set Interface MTU)");
1500 	if (mtu > IXL_MAX_FRAME - ETHER_HDR_LEN - ETHER_CRC_LEN -
1501 		ETHER_VLAN_ENCAP_LEN)
1502 		return (EINVAL);
1503 
1504 	vsi->shared->isc_max_frame_size = mtu + ETHER_HDR_LEN + ETHER_CRC_LEN +
1505 		ETHER_VLAN_ENCAP_LEN;
1506 
1507 	return (0);
1508 }
1509 
1510 static void
1511 ixl_if_media_status(if_ctx_t ctx, struct ifmediareq *ifmr)
1512 {
1513 	struct ixl_pf *pf = iflib_get_softc(ctx);
1514 	struct i40e_hw  *hw = &pf->hw;
1515 
1516 	INIT_DEBUGOUT("ixl_media_status: begin");
1517 
1518 	ifmr->ifm_status = IFM_AVALID;
1519 	ifmr->ifm_active = IFM_ETHER;
1520 
1521 	if (!pf->link_up) {
1522 		return;
1523 	}
1524 
1525 	ifmr->ifm_status |= IFM_ACTIVE;
1526 	/* Hardware is always full-duplex */
1527 	ifmr->ifm_active |= IFM_FDX;
1528 
1529 	switch (hw->phy.link_info.phy_type) {
1530 		/* 100 M */
1531 		case I40E_PHY_TYPE_100BASE_TX:
1532 			ifmr->ifm_active |= IFM_100_TX;
1533 			break;
1534 		/* 1 G */
1535 		case I40E_PHY_TYPE_1000BASE_T:
1536 			ifmr->ifm_active |= IFM_1000_T;
1537 			break;
1538 		case I40E_PHY_TYPE_1000BASE_SX:
1539 			ifmr->ifm_active |= IFM_1000_SX;
1540 			break;
1541 		case I40E_PHY_TYPE_1000BASE_LX:
1542 			ifmr->ifm_active |= IFM_1000_LX;
1543 			break;
1544 		case I40E_PHY_TYPE_1000BASE_T_OPTICAL:
1545 			ifmr->ifm_active |= IFM_1000_T;
1546 			break;
1547 		/* 2.5 G */
1548 		case I40E_PHY_TYPE_2_5GBASE_T_LINK_STATUS:
1549 			ifmr->ifm_active |= IFM_2500_T;
1550 			break;
1551 		/* 5 G */
1552 		case I40E_PHY_TYPE_5GBASE_T_LINK_STATUS:
1553 			ifmr->ifm_active |= IFM_5000_T;
1554 			break;
1555 		/* 10 G */
1556 		case I40E_PHY_TYPE_10GBASE_SFPP_CU:
1557 			ifmr->ifm_active |= IFM_10G_TWINAX;
1558 			break;
1559 		case I40E_PHY_TYPE_10GBASE_SR:
1560 			ifmr->ifm_active |= IFM_10G_SR;
1561 			break;
1562 		case I40E_PHY_TYPE_10GBASE_LR:
1563 			ifmr->ifm_active |= IFM_10G_LR;
1564 			break;
1565 		case I40E_PHY_TYPE_10GBASE_T:
1566 			ifmr->ifm_active |= IFM_10G_T;
1567 			break;
1568 		case I40E_PHY_TYPE_XAUI:
1569 		case I40E_PHY_TYPE_XFI:
1570 			ifmr->ifm_active |= IFM_10G_TWINAX;
1571 			break;
1572 		case I40E_PHY_TYPE_10GBASE_AOC:
1573 			ifmr->ifm_active |= IFM_10G_AOC;
1574 			break;
1575 		/* 25 G */
1576 		case I40E_PHY_TYPE_25GBASE_KR:
1577 			ifmr->ifm_active |= IFM_25G_KR;
1578 			break;
1579 		case I40E_PHY_TYPE_25GBASE_CR:
1580 			ifmr->ifm_active |= IFM_25G_CR;
1581 			break;
1582 		case I40E_PHY_TYPE_25GBASE_SR:
1583 			ifmr->ifm_active |= IFM_25G_SR;
1584 			break;
1585 		case I40E_PHY_TYPE_25GBASE_LR:
1586 			ifmr->ifm_active |= IFM_25G_LR;
1587 			break;
1588 		case I40E_PHY_TYPE_25GBASE_AOC:
1589 			ifmr->ifm_active |= IFM_25G_AOC;
1590 			break;
1591 		case I40E_PHY_TYPE_25GBASE_ACC:
1592 			ifmr->ifm_active |= IFM_25G_ACC;
1593 			break;
1594 		/* 40 G */
1595 		case I40E_PHY_TYPE_40GBASE_CR4:
1596 		case I40E_PHY_TYPE_40GBASE_CR4_CU:
1597 			ifmr->ifm_active |= IFM_40G_CR4;
1598 			break;
1599 		case I40E_PHY_TYPE_40GBASE_SR4:
1600 			ifmr->ifm_active |= IFM_40G_SR4;
1601 			break;
1602 		case I40E_PHY_TYPE_40GBASE_LR4:
1603 			ifmr->ifm_active |= IFM_40G_LR4;
1604 			break;
1605 		case I40E_PHY_TYPE_XLAUI:
1606 			ifmr->ifm_active |= IFM_OTHER;
1607 			break;
1608 		case I40E_PHY_TYPE_1000BASE_KX:
1609 			ifmr->ifm_active |= IFM_1000_KX;
1610 			break;
1611 		case I40E_PHY_TYPE_SGMII:
1612 			ifmr->ifm_active |= IFM_1000_SGMII;
1613 			break;
1614 		/* ERJ: What's the difference between these? */
1615 		case I40E_PHY_TYPE_10GBASE_CR1_CU:
1616 		case I40E_PHY_TYPE_10GBASE_CR1:
1617 			ifmr->ifm_active |= IFM_10G_CR1;
1618 			break;
1619 		case I40E_PHY_TYPE_10GBASE_KX4:
1620 			ifmr->ifm_active |= IFM_10G_KX4;
1621 			break;
1622 		case I40E_PHY_TYPE_10GBASE_KR:
1623 			ifmr->ifm_active |= IFM_10G_KR;
1624 			break;
1625 		case I40E_PHY_TYPE_SFI:
1626 			ifmr->ifm_active |= IFM_10G_SFI;
1627 			break;
1628 		/* Our single 20G media type */
1629 		case I40E_PHY_TYPE_20GBASE_KR2:
1630 			ifmr->ifm_active |= IFM_20G_KR2;
1631 			break;
1632 		case I40E_PHY_TYPE_40GBASE_KR4:
1633 			ifmr->ifm_active |= IFM_40G_KR4;
1634 			break;
1635 		case I40E_PHY_TYPE_XLPPI:
1636 		case I40E_PHY_TYPE_40GBASE_AOC:
1637 			ifmr->ifm_active |= IFM_40G_XLPPI;
1638 			break;
1639 		/* Unknown to driver */
1640 		default:
1641 			ifmr->ifm_active |= IFM_UNKNOWN;
1642 			break;
1643 	}
1644 	/* Report flow control status as well */
1645 	if (hw->phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX)
1646 		ifmr->ifm_active |= IFM_ETH_TXPAUSE;
1647 	if (hw->phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX)
1648 		ifmr->ifm_active |= IFM_ETH_RXPAUSE;
1649 }
1650 
1651 static int
1652 ixl_if_media_change(if_ctx_t ctx)
1653 {
1654 	struct ifmedia *ifm = iflib_get_media(ctx);
1655 
1656 	INIT_DEBUGOUT("ixl_media_change: begin");
1657 
1658 	if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1659 		return (EINVAL);
1660 
1661 	if_printf(iflib_get_ifp(ctx), "Media change is not supported.\n");
1662 	return (ENODEV);
1663 }
1664 
1665 static int
1666 ixl_if_promisc_set(if_ctx_t ctx, int flags)
1667 {
1668 	struct ixl_pf *pf = iflib_get_softc(ctx);
1669 	struct ixl_vsi *vsi = &pf->vsi;
1670 	if_t ifp = iflib_get_ifp(ctx);
1671 	struct i40e_hw	*hw = vsi->hw;
1672 	int		err;
1673 	bool		uni = FALSE, multi = FALSE;
1674 
1675 	if (flags & IFF_PROMISC)
1676 		uni = multi = TRUE;
1677 	else if (flags & IFF_ALLMULTI || if_llmaddr_count(ifp) >=
1678 	    MAX_MULTICAST_ADDR)
1679 		multi = TRUE;
1680 
1681 	err = i40e_aq_set_vsi_unicast_promiscuous(hw,
1682 	    vsi->seid, uni, NULL, true);
1683 	if (err)
1684 		return (err);
1685 	err = i40e_aq_set_vsi_multicast_promiscuous(hw,
1686 	    vsi->seid, multi, NULL);
1687 	return (err);
1688 }
1689 
1690 static void
1691 ixl_if_timer(if_ctx_t ctx, uint16_t qid)
1692 {
1693 	struct ixl_pf *pf = iflib_get_softc(ctx);
1694 
1695 	if (qid != 0)
1696 		return;
1697 
1698 	ixl_update_stats_counters(pf);
1699 }
1700 
1701 static void
1702 ixl_if_vlan_register(if_ctx_t ctx, u16 vtag)
1703 {
1704 	struct ixl_pf *pf = iflib_get_softc(ctx);
1705 	struct ixl_vsi *vsi = &pf->vsi;
1706 	struct i40e_hw	*hw = vsi->hw;
1707 	if_t ifp = iflib_get_ifp(ctx);
1708 
1709 	if ((vtag == 0) || (vtag > 4095))	/* Invalid */
1710 		return;
1711 
1712 	/*
1713 	 * Keep track of registered VLANS to know what
1714 	 * filters have to be configured when VLAN_HWFILTER
1715 	 * capability is enabled.
1716 	 */
1717 	++vsi->num_vlans;
1718 	bit_set(vsi->vlans_map, vtag);
1719 
1720 	if ((if_getcapenable(ifp) & IFCAP_VLAN_HWFILTER) == 0)
1721 		return;
1722 
1723 	if (vsi->num_vlans < IXL_MAX_VLAN_FILTERS)
1724 		ixl_add_filter(vsi, hw->mac.addr, vtag);
1725 	else if (vsi->num_vlans == IXL_MAX_VLAN_FILTERS) {
1726 		/*
1727 		 * There is not enough HW resources to add filters
1728 		 * for all registered VLANs. Re-configure filtering
1729 		 * to allow reception of all expected traffic.
1730 		 */
1731 		device_printf(vsi->dev,
1732 		    "Not enough HW filters for all VLANs. VLAN HW filtering disabled");
1733 		ixl_del_all_vlan_filters(vsi, hw->mac.addr);
1734 		ixl_add_filter(vsi, hw->mac.addr, IXL_VLAN_ANY);
1735 	}
1736 }
1737 
1738 static void
1739 ixl_if_vlan_unregister(if_ctx_t ctx, u16 vtag)
1740 {
1741 	struct ixl_pf *pf = iflib_get_softc(ctx);
1742 	struct ixl_vsi *vsi = &pf->vsi;
1743 	struct i40e_hw	*hw = vsi->hw;
1744 	if_t ifp = iflib_get_ifp(ctx);
1745 
1746 	if ((vtag == 0) || (vtag > 4095))	/* Invalid */
1747 		return;
1748 
1749 	--vsi->num_vlans;
1750 	bit_clear(vsi->vlans_map, vtag);
1751 
1752 	if ((if_getcapenable(ifp) & IFCAP_VLAN_HWFILTER) == 0)
1753 		return;
1754 
1755 	/* One filter is used for untagged frames */
1756 	if (vsi->num_vlans < IXL_MAX_VLAN_FILTERS - 1)
1757 		ixl_del_filter(vsi, hw->mac.addr, vtag);
1758 	else if (vsi->num_vlans == IXL_MAX_VLAN_FILTERS - 1) {
1759 		ixl_del_filter(vsi, hw->mac.addr, IXL_VLAN_ANY);
1760 		ixl_add_vlan_filters(vsi, hw->mac.addr);
1761 	}
1762 }
1763 
1764 static uint64_t
1765 ixl_if_get_counter(if_ctx_t ctx, ift_counter cnt)
1766 {
1767 	struct ixl_pf *pf = iflib_get_softc(ctx);
1768 	struct ixl_vsi *vsi = &pf->vsi;
1769 	if_t ifp = iflib_get_ifp(ctx);
1770 
1771 	switch (cnt) {
1772 	case IFCOUNTER_IPACKETS:
1773 		return (vsi->ipackets);
1774 	case IFCOUNTER_IERRORS:
1775 		return (vsi->ierrors);
1776 	case IFCOUNTER_OPACKETS:
1777 		return (vsi->opackets);
1778 	case IFCOUNTER_OERRORS:
1779 		return (vsi->oerrors);
1780 	case IFCOUNTER_COLLISIONS:
1781 		/* Collisions are by standard impossible in 40G/10G Ethernet */
1782 		return (0);
1783 	case IFCOUNTER_IBYTES:
1784 		return (vsi->ibytes);
1785 	case IFCOUNTER_OBYTES:
1786 		return (vsi->obytes);
1787 	case IFCOUNTER_IMCASTS:
1788 		return (vsi->imcasts);
1789 	case IFCOUNTER_OMCASTS:
1790 		return (vsi->omcasts);
1791 	case IFCOUNTER_IQDROPS:
1792 		return (vsi->iqdrops);
1793 	case IFCOUNTER_OQDROPS:
1794 		return (vsi->oqdrops);
1795 	case IFCOUNTER_NOPROTO:
1796 		return (vsi->noproto);
1797 	default:
1798 		return (if_get_counter_default(ifp, cnt));
1799 	}
1800 }
1801 
1802 #ifdef PCI_IOV
1803 static void
1804 ixl_if_vflr_handle(if_ctx_t ctx)
1805 {
1806 	struct ixl_pf *pf = iflib_get_softc(ctx);
1807 
1808 	ixl_handle_vflr(pf);
1809 }
1810 #endif
1811 
1812 static int
1813 ixl_if_i2c_req(if_ctx_t ctx, struct ifi2creq *req)
1814 {
1815 	struct ixl_pf		*pf = iflib_get_softc(ctx);
1816 
1817 	if (pf->read_i2c_byte == NULL)
1818 		return (EINVAL);
1819 
1820 	for (int i = 0; i < req->len; i++)
1821 		if (pf->read_i2c_byte(pf, req->offset + i,
1822 		    req->dev_addr, &req->data[i]))
1823 			return (EIO);
1824 	return (0);
1825 }
1826 
1827 static int
1828 ixl_if_priv_ioctl(if_ctx_t ctx, u_long command, caddr_t data)
1829 {
1830 	struct ixl_pf *pf = iflib_get_softc(ctx);
1831 	struct ifdrv *ifd = (struct ifdrv *)data;
1832 	int error = 0;
1833 
1834 	/*
1835 	 * The iflib_if_ioctl forwards SIOCxDRVSPEC and SIOGPRIVATE_0 without
1836 	 * performing privilege checks. It is important that this function
1837 	 * perform the necessary checks for commands which should only be
1838 	 * executed by privileged threads.
1839 	 */
1840 
1841 	switch(command) {
1842 	case SIOCGDRVSPEC:
1843 	case SIOCSDRVSPEC:
1844 		/* NVM update command */
1845 		if (ifd->ifd_cmd == I40E_NVM_ACCESS) {
1846 			error = priv_check(curthread, PRIV_DRIVER);
1847 			if (error)
1848 				break;
1849 			error = ixl_handle_nvmupd_cmd(pf, ifd);
1850 		} else {
1851 			error = EINVAL;
1852 		}
1853 		break;
1854 	default:
1855 		error = EOPNOTSUPP;
1856 	}
1857 
1858 	return (error);
1859 }
1860 
1861 /* ixl_if_needs_restart - Tell iflib when the driver needs to be reinitialized
1862  * @ctx: iflib context
1863  * @event: event code to check
1864  *
1865  * Defaults to returning false for every event.
1866  *
1867  * @returns true if iflib needs to reinit the interface, false otherwise
1868  */
1869 static bool
1870 ixl_if_needs_restart(if_ctx_t ctx __unused, enum iflib_restart_event event)
1871 {
1872 	switch (event) {
1873 	case IFLIB_RESTART_VLAN_CONFIG:
1874 	default:
1875 		return (false);
1876 	}
1877 }
1878 
1879 /*
1880  * Sanity check and save off tunable values.
1881  */
1882 static void
1883 ixl_save_pf_tunables(struct ixl_pf *pf)
1884 {
1885 	device_t dev = pf->dev;
1886 
1887 	/* Save tunable information */
1888 #ifdef IXL_DEBUG_FC
1889 	pf->enable_tx_fc_filter = ixl_enable_tx_fc_filter;
1890 #endif
1891 #ifdef IXL_DEBUG
1892 	pf->recovery_mode = ixl_debug_recovery_mode;
1893 #endif
1894 	pf->dbg_mask = ixl_core_debug_mask;
1895 	pf->hw.debug_mask = ixl_shared_debug_mask;
1896 	pf->vsi.enable_head_writeback = !!(ixl_enable_head_writeback);
1897 	pf->enable_vf_loopback = !!(ixl_enable_vf_loopback);
1898 #if 0
1899 	pf->dynamic_rx_itr = ixl_dynamic_rx_itr;
1900 	pf->dynamic_tx_itr = ixl_dynamic_tx_itr;
1901 #endif
1902 
1903 	if (ixl_i2c_access_method > 3 || ixl_i2c_access_method < 0)
1904 		pf->i2c_access_method = 0;
1905 	else
1906 		pf->i2c_access_method = ixl_i2c_access_method;
1907 
1908 	if (ixl_tx_itr < 0 || ixl_tx_itr > IXL_MAX_ITR) {
1909 		device_printf(dev, "Invalid tx_itr value of %d set!\n",
1910 		    ixl_tx_itr);
1911 		device_printf(dev, "tx_itr must be between %d and %d, "
1912 		    "inclusive\n",
1913 		    0, IXL_MAX_ITR);
1914 		device_printf(dev, "Using default value of %d instead\n",
1915 		    IXL_ITR_4K);
1916 		pf->tx_itr = IXL_ITR_4K;
1917 	} else
1918 		pf->tx_itr = ixl_tx_itr;
1919 
1920 	if (ixl_rx_itr < 0 || ixl_rx_itr > IXL_MAX_ITR) {
1921 		device_printf(dev, "Invalid rx_itr value of %d set!\n",
1922 		    ixl_rx_itr);
1923 		device_printf(dev, "rx_itr must be between %d and %d, "
1924 		    "inclusive\n",
1925 		    0, IXL_MAX_ITR);
1926 		device_printf(dev, "Using default value of %d instead\n",
1927 		    IXL_ITR_8K);
1928 		pf->rx_itr = IXL_ITR_8K;
1929 	} else
1930 		pf->rx_itr = ixl_rx_itr;
1931 
1932 	pf->fc = -1;
1933 	if (ixl_flow_control != -1) {
1934 		if (ixl_flow_control < 0 || ixl_flow_control > 3) {
1935 			device_printf(dev,
1936 			    "Invalid flow_control value of %d set!\n",
1937 			    ixl_flow_control);
1938 			device_printf(dev,
1939 			    "flow_control must be between %d and %d, "
1940 			    "inclusive\n", 0, 3);
1941 			device_printf(dev,
1942 			    "Using default configuration instead\n");
1943 		} else
1944 			pf->fc = ixl_flow_control;
1945 	}
1946 }
1947 
1948