2 * Copyright (c) 2014-2017, Matthew Macy (mmacy@mattmacy.io)
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
11 * 2. Neither the name of Matthew Macy nor the names of its
12 * contributors may be used to endorse or promote products derived from
13 * this software without specific prior written permission.
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 * POSSIBILITY OF SUCH DAMAGE.
34 #include <sys/cpuset.h>
35 #include <machine/bus.h>
37 #include <sys/gtaskqueue.h>
42 * The value type for indexing, limits max descriptors
43 * to 65535 can be conditionally redefined to uint32_t
44 * in the future if the need arises.
46 typedef uint16_t qidx_t;
47 #define QIDX_INVALID 0xFFFF
50 typedef struct iflib_ctx *if_ctx_t;
52 typedef struct if_shared_ctx *if_shared_ctx_t;
53 struct if_int_delay_info;
54 typedef struct if_int_delay_info *if_int_delay_info_t;
56 typedef struct if_pseudo *if_pseudo_t;
62 * - iflib utility functions
63 * - iflib core functions
66 typedef struct if_rxd_frag {
72 /* bnxt supports 64 with hardware LRO enabled */
73 #define IFLIB_MAX_RX_SEGS 64
75 typedef struct if_rxd_info {
77 uint16_t iri_qsidx; /* qset index */
78 uint16_t iri_vtag; /* vlan tag - if flag set */
79 /* XXX redundant with the new irf_len field */
80 uint16_t iri_len; /* packet length */
81 qidx_t iri_cidx; /* consumer index of cq */
82 if_t iri_ifp; /* driver may have >1 iface per softc */
84 /* updated by driver */
85 if_rxd_frag_t iri_frags;
86 uint32_t iri_flowid; /* RSS hash for packet */
87 uint32_t iri_csum_flags; /* m_pkthdr csum flags */
89 uint32_t iri_csum_data; /* m_pkthdr csum data */
90 uint8_t iri_flags; /* mbuf flags for packet */
91 uint8_t iri_nfrags; /* number of fragments in packet */
92 uint8_t iri_rsstype; /* RSS hash type */
93 uint8_t iri_pad; /* any padding in the received data */
96 typedef struct if_rxd_update {
102 uint16_t iru_buf_size;
106 #define IPI_TX_INTR 0x1 /* send an interrupt when this packet is sent */
107 #define IPI_TX_IPV4 0x2 /* ethertype IPv4 */
108 #define IPI_TX_IPV6 0x4 /* ethertype IPv6 */
110 typedef struct if_pkt_info {
111 bus_dma_segment_t *ipi_segs; /* physical addresses */
112 uint32_t ipi_len; /* packet length */
113 uint16_t ipi_qsidx; /* queue set index */
114 qidx_t ipi_nsegs; /* number of segments */
116 qidx_t ipi_ndescs; /* number of descriptors used by encap */
117 uint16_t ipi_flags; /* iflib per-packet flags */
118 qidx_t ipi_pidx; /* start pidx for encap */
119 qidx_t ipi_new_pidx; /* next available pidx post-encap */
120 /* offload handling */
121 uint8_t ipi_ehdrlen; /* ether header length */
122 uint8_t ipi_ip_hlen; /* ip header length */
123 uint8_t ipi_tcp_hlen; /* tcp header length */
124 uint8_t ipi_ipproto; /* ip protocol */
126 uint32_t ipi_csum_flags; /* packet checksum flags */
127 uint16_t ipi_tso_segsz; /* tso segment size */
128 uint16_t ipi_vtag; /* VLAN tag */
129 uint16_t ipi_etype; /* ether header type */
130 uint8_t ipi_tcp_hflags; /* tcp header flags */
131 uint8_t ipi_mflags; /* packet mbuf flags */
133 uint32_t ipi_tcp_seq; /* tcp seqno */
137 typedef struct if_irq {
138 struct resource *ii_res;
143 struct if_int_delay_info {
144 if_ctx_t iidi_ctx; /* Back-pointer to the iflib ctx (softc) */
145 int iidi_offset; /* Register offset to read/write */
146 int iidi_value; /* Current value in usecs */
147 struct sysctl_oid *iidi_oidp;
148 struct sysctl_req *iidi_req;
158 * This really belongs in pciio.h or some place more general
159 * but this is the only consumer for now.
161 typedef struct pci_vendor_info {
162 uint32_t pvi_vendor_id;
163 uint32_t pvi_device_id;
164 uint32_t pvi_subvendor_id;
165 uint32_t pvi_subdevice_id;
167 uint32_t pvi_class_mask;
168 const char *pvi_name;
170 #define PVID(vendor, devid, name) {vendor, devid, 0, 0, 0, 0, name}
171 #define PVID_OEM(vendor, devid, svid, sdevid, revid, name) {vendor, devid, svid, sdevid, revid, 0, name}
172 #define PVID_END {0, 0, 0, 0, 0, 0, NULL}
174 /* No drivers in tree currently match on anything except vendor:device. */
175 #define IFLIB_PNP_DESCR "U32:vendor;U32:device;U32:#;U32:#;" \
177 #define IFLIB_PNP_INFO(b, u, t) \
178 MODULE_PNP_INFO(IFLIB_PNP_DESCR, b, u, t, nitems(t) - 1)
180 typedef struct if_txrx {
181 int (*ift_txd_encap) (void *, if_pkt_info_t);
182 void (*ift_txd_flush) (void *, uint16_t, qidx_t pidx);
183 int (*ift_txd_credits_update) (void *, uint16_t qsidx, bool clear);
185 int (*ift_rxd_available) (void *, uint16_t qsidx, qidx_t pidx, qidx_t budget);
186 int (*ift_rxd_pkt_get) (void *, if_rxd_info_t ri);
187 void (*ift_rxd_refill) (void * , if_rxd_update_t iru);
188 void (*ift_rxd_flush) (void *, uint16_t qsidx, uint8_t flidx, qidx_t pidx);
189 int (*ift_legacy_intr) (void *);
192 typedef struct if_softc_ctx {
198 int isc_msix_bar; /* can be model specific - initialize in attach_pre */
199 int isc_tx_nsegments; /* can be model specific - initialize in attach_pre */
203 uint32_t isc_txqsizes[8];
204 uint32_t isc_rxqsizes[8];
205 /* is there such thing as a descriptor that is more than 248 bytes ? */
206 uint8_t isc_txd_size[8];
207 uint8_t isc_rxd_size[8];
209 int isc_tx_tso_segments_max;
210 int isc_tx_tso_size_max;
211 int isc_tx_tso_segsize_max;
212 int isc_tx_csum_flags;
213 int isc_capabilities;
215 int isc_rss_table_size;
216 int isc_rss_table_mask;
217 int isc_nrxqsets_max;
218 int isc_ntxqsets_max;
221 iflib_intr_mode_t isc_intr;
222 uint16_t isc_rxd_buf_size[8]; /* set at init time by driver, 0
223 means use iflib-calculated size
224 based on isc_max_frame_size */
225 uint16_t isc_max_frame_size; /* set at init time by driver */
226 uint16_t isc_min_frame_size; /* set at init time by driver, only used if
227 IFLIB_NEED_ETHER_PAD is set. */
228 uint32_t isc_pause_frames; /* set by driver for iflib_timer to detect */
236 int isc_disable_msix;
238 struct ifmedia *isc_media;
242 * Initialization values for device
244 struct if_shared_ctx {
246 driver_t *isc_driver;
247 bus_size_t isc_q_align;
248 bus_size_t isc_tx_maxsize;
249 bus_size_t isc_tx_maxsegsize;
250 bus_size_t isc_tso_maxsize;
251 bus_size_t isc_tso_maxsegsize;
252 bus_size_t isc_rx_maxsize;
253 bus_size_t isc_rx_maxsegsize;
254 int isc_rx_nsegments;
255 int isc_admin_intrcnt; /* # of admin/link interrupts */
257 /* fields necessary for probe */
258 const pci_vendor_info_t *isc_vendor_info;
259 const char *isc_driver_version;
260 /* optional function to transform the read values to match the table*/
261 void (*isc_parse_devinfo) (uint16_t *device_id, uint16_t *subvendor_id,
262 uint16_t *subdevice_id, uint16_t *rev_id);
264 int isc_nrxd_default[8];
267 int isc_ntxd_default[8];
270 /* actively used during operation */
271 int isc_nfl __aligned(CACHE_LINE_SIZE);
272 int isc_ntxqs; /* # of tx queues per tx qset - usually 1 */
273 int isc_nrxqs; /* # of rx queues per rx qset - intel 1, chelsio 2, broadcom 3 */
275 int isc_tx_reclaim_thresh;
277 const char *isc_name;
280 typedef struct iflib_dma_info {
281 bus_addr_t idi_paddr;
283 bus_dma_tag_t idi_tag;
284 bus_dmamap_t idi_map;
288 #define IFLIB_MAGIC 0xCAFEF00D
299 * Interface has a separate completion queue for RX
301 #define IFLIB_HAS_RXCQ 0x01
303 * Driver has already allocated vectors
305 #define IFLIB_SKIP_MSIX 0x02
307 * Interface is a virtual function
309 #define IFLIB_IS_VF 0x04
311 * Interface has a separate completion queue for TX
313 #define IFLIB_HAS_TXCQ 0x08
315 * Interface does checksum in place
317 #define IFLIB_NEED_SCRATCH 0x10
319 * Interface doesn't expect in_pseudo for th_sum
321 #define IFLIB_TSO_INIT_IP 0x20
323 * Interface doesn't align IP header
325 #define IFLIB_DO_RX_FIXUP 0x40
327 * Driver needs csum zeroed for offloading
329 #define IFLIB_NEED_ZERO_CSUM 0x80
331 * Driver needs frames padded to some minimum length
333 #define IFLIB_NEED_ETHER_PAD 0x100
335 * Packets can be freed immediately after encap
337 #define IFLIB_TXD_ENCAP_PIO 0x00200
339 * Use RX completion handler
341 #define IFLIB_RX_COMPLETION 0x00400
343 * Skip refilling cluster free lists
345 #define IFLIB_SKIP_CLREFILL 0x00800
347 * Don't reset on hang
349 #define IFLIB_NO_HANG_RESET 0x01000
351 * Don't need/want most of the niceties of
354 #define IFLIB_PSEUDO 0x02000
356 * No DMA support needed / wanted
358 #define IFLIB_VIRTUAL 0x04000
360 * autogenerate a MAC address
362 #define IFLIB_GEN_MAC 0x08000
364 * Interface needs admin task to ignore interface up/down status
366 #define IFLIB_ADMIN_ALWAYS_RUN 0x10000
368 * Driver will pass the media
370 #define IFLIB_DRIVER_MEDIA 0x20000
372 * When using a single hardware interrupt for the interface, only process RX
373 * interrupts instead of doing combined RX/TX processing.
375 #define IFLIB_SINGLE_IRQ_RX_ONLY 0x40000
377 * Don't need/want most of the niceties of
380 #define IFLIB_PSEUDO_ETHER 0x80000
383 * These enum values are used in iflib_needs_restart to indicate to iflib
384 * functions whether or not the interface needs restarting when certain events
387 enum iflib_restart_event {
388 IFLIB_RESTART_VLAN_CONFIG,
394 void *iflib_get_softc(if_ctx_t ctx);
396 device_t iflib_get_dev(if_ctx_t ctx);
398 if_t iflib_get_ifp(if_ctx_t ctx);
400 struct ifmedia *iflib_get_media(if_ctx_t ctx);
402 if_softc_ctx_t iflib_get_softc_ctx(if_ctx_t ctx);
403 if_shared_ctx_t iflib_get_sctx(if_ctx_t ctx);
405 void iflib_set_mac(if_ctx_t ctx, uint8_t mac[ETHER_ADDR_LEN]);
406 void iflib_request_reset(if_ctx_t ctx);
407 uint8_t iflib_in_detach(if_ctx_t ctx);
409 uint32_t iflib_get_rx_mbuf_sz(if_ctx_t ctx);
412 * If the driver can plug cleanly in to newbus use these
414 int iflib_device_probe(device_t);
415 int iflib_device_attach(device_t);
416 int iflib_device_detach(device_t);
417 int iflib_device_suspend(device_t);
418 int iflib_device_resume(device_t);
419 int iflib_device_shutdown(device_t);
422 * Use this instead of iflib_device_probe if the driver should report
423 * BUS_PROBE_VENDOR instead of BUS_PROBE_DEFAULT. (For example, an out-of-tree
424 * driver based on iflib).
426 int iflib_device_probe_vendor(device_t);
428 int iflib_device_iov_init(device_t, uint16_t, const nvlist_t *);
429 void iflib_device_iov_uninit(device_t);
430 int iflib_device_iov_add_vf(device_t, uint16_t, const nvlist_t *);
433 * If the driver can't plug cleanly in to newbus
436 int iflib_device_register(device_t dev, void *softc, if_shared_ctx_t sctx, if_ctx_t *ctxp);
437 int iflib_device_deregister(if_ctx_t);
439 int iflib_irq_alloc(if_ctx_t, if_irq_t, int, driver_filter_t, void *filter_arg, driver_intr_t, void *arg, const char *name);
440 int iflib_irq_alloc_generic(if_ctx_t ctx, if_irq_t irq, int rid,
441 iflib_intr_type_t type, driver_filter_t *filter,
442 void *filter_arg, int qid, const char *name);
443 void iflib_softirq_alloc_generic(if_ctx_t ctx, if_irq_t irq, iflib_intr_type_t type, void *arg, int qid, const char *name);
445 void iflib_irq_free(if_ctx_t ctx, if_irq_t irq);
447 void iflib_io_tqg_attach(struct grouptask *gt, void *uniq, int cpu,
450 void iflib_config_gtask_init(void *ctx, struct grouptask *gtask,
451 gtask_fn_t *fn, const char *name);
452 void iflib_config_gtask_deinit(struct grouptask *gtask);
454 void iflib_tx_intr_deferred(if_ctx_t ctx, int txqid);
455 void iflib_rx_intr_deferred(if_ctx_t ctx, int rxqid);
456 void iflib_admin_intr_deferred(if_ctx_t ctx);
457 void iflib_iov_intr_deferred(if_ctx_t ctx);
459 void iflib_link_state_change(if_ctx_t ctx, int linkstate, uint64_t baudrate);
461 int iflib_dma_alloc(if_ctx_t ctx, int size, iflib_dma_info_t dma, int mapflags);
462 int iflib_dma_alloc_align(if_ctx_t ctx, int size, int align, iflib_dma_info_t dma, int mapflags);
463 void iflib_dma_free(iflib_dma_info_t dma);
464 int iflib_dma_alloc_multi(if_ctx_t ctx, int *sizes, iflib_dma_info_t *dmalist, int mapflags, int count);
466 void iflib_dma_free_multi(iflib_dma_info_t *dmalist, int count);
468 struct sx *iflib_ctx_lock_get(if_ctx_t);
470 void iflib_led_create(if_ctx_t ctx);
472 void iflib_add_int_delay_sysctl(if_ctx_t, const char *, const char *,
473 if_int_delay_info_t, int, int);
476 * Pseudo device support
478 if_pseudo_t iflib_clone_register(if_shared_ctx_t);
479 void iflib_clone_deregister(if_pseudo_t);
481 #endif /* __IFLIB_H_ */