/*-
* Copyright (c) 2014-2017, Matthew Macy (mmacy@mattmacy.io)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Neither the name of Matthew Macy nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __IFLIB_H_
#define __IFLIB_H_
#include <sys/kobj.h>
#include <sys/bus.h>
#include <sys/cpuset.h>
#include <machine/bus.h>
#include <sys/nv.h>
#include <sys/gtaskqueue.h>
/*
* The value type for indexing, limits max descriptors
* to 65535 can be conditionally redefined to uint32_t
* in the future if the need arises.
*/
typedef uint16_t qidx_t;
#define QIDX_INVALID 0xFFFF
struct iflib_ctx;
typedef struct iflib_ctx *if_ctx_t;
struct if_shared_ctx;
typedef const struct if_shared_ctx *if_shared_ctx_t;
struct if_int_delay_info;
typedef struct if_int_delay_info *if_int_delay_info_t;
/*
* File organization:
* - public structures
* - iflib accessors
* - iflib utility functions
* - iflib core functions
*/
typedef struct if_rxd_frag {
uint8_t irf_flid;
qidx_t irf_idx;
uint16_t irf_len;
} *if_rxd_frag_t;
/* bnxt supports 64 with hardware LRO enabled */
#define IFLIB_MAX_RX_SEGS 64
typedef struct if_rxd_info {
/* set by iflib */
uint16_t iri_qsidx; /* qset index */
uint16_t iri_vtag; /* vlan tag - if flag set */
/* XXX redundant with the new irf_len field */
uint16_t iri_len; /* packet length */
qidx_t iri_cidx; /* consumer index of cq */
if_t iri_ifp; /* driver may have >1 iface per softc */
/* updated by driver */
if_rxd_frag_t iri_frags;
uint32_t iri_flowid; /* RSS hash for packet */
uint32_t iri_csum_flags; /* m_pkthdr csum flags */
uint32_t iri_csum_data; /* m_pkthdr csum data */
uint8_t iri_flags; /* mbuf flags for packet */
uint8_t iri_nfrags; /* number of fragments in packet */
uint8_t iri_rsstype; /* RSS hash type */
uint8_t iri_pad; /* any padding in the received data */
} *if_rxd_info_t;
typedef struct if_rxd_update {
uint64_t *iru_paddrs;
qidx_t *iru_idxs;
qidx_t iru_pidx;
uint16_t iru_qsidx;
uint16_t iru_count;
uint16_t iru_buf_size;
uint8_t iru_flidx;
} *if_rxd_update_t;
#define IPI_TX_INTR 0x1 /* send an interrupt when this packet is sent */
#define IPI_TX_IPV4 0x2 /* ethertype IPv4 */
#define IPI_TX_IPV6 0x4 /* ethertype IPv6 */
typedef struct if_pkt_info {
bus_dma_segment_t *ipi_segs; /* physical addresses */
uint32_t ipi_len; /* packet length */
uint16_t ipi_qsidx; /* queue set index */
qidx_t ipi_nsegs; /* number of segments */
qidx_t ipi_ndescs; /* number of descriptors used by encap */
uint16_t ipi_flags; /* iflib per-packet flags */
qidx_t ipi_pidx; /* start pidx for encap */
qidx_t ipi_new_pidx; /* next available pidx post-encap */
/* offload handling */
uint8_t ipi_ehdrlen; /* ether header length */
uint8_t ipi_ip_hlen; /* ip header length */
uint8_t ipi_tcp_hlen; /* tcp header length */
uint8_t ipi_ipproto; /* ip protocol */
uint32_t ipi_csum_flags; /* packet checksum flags */
uint16_t ipi_tso_segsz; /* tso segment size */
uint16_t ipi_vtag; /* VLAN tag */
uint16_t ipi_etype; /* ether header type */
uint8_t ipi_tcp_hflags; /* tcp header flags */
uint8_t ipi_mflags; /* packet mbuf flags */
uint32_t ipi_tcp_seq; /* tcp seqno */
uint8_t ipi_ip_tos; /* IP ToS field data */
uint8_t __spare0__;
uint16_t __spare1__;
} *if_pkt_info_t;
typedef struct if_irq {
struct resource *ii_res;
int __spare0__;
void *ii_tag;
} *if_irq_t;
struct if_int_delay_info {
if_ctx_t iidi_ctx; /* Back-pointer to the iflib ctx (softc) */
int iidi_offset; /* Register offset to read/write */
int iidi_value; /* Current value in usecs */
struct sysctl_oid *iidi_oidp;
struct sysctl_req *iidi_req;
};
typedef enum {
IFLIB_INTR_LEGACY,
IFLIB_INTR_MSI,
IFLIB_INTR_MSIX
} iflib_intr_mode_t;
/*
* This really belongs in pciio.h or some place more general
* but this is the only consumer for now.
*/
typedef struct pci_vendor_info {
uint32_t pvi_vendor_id;
uint32_t pvi_device_id;
uint32_t pvi_subvendor_id;
uint32_t pvi_subdevice_id;
uint32_t pvi_rev_id;
uint32_t pvi_class_mask;
const char *pvi_name;
} pci_vendor_info_t;
#define PVID(vendor, devid, name) {vendor, devid, 0, 0, 0, 0, name}
#define PVID_OEM(vendor, devid, svid, sdevid, revid, name) {vendor, devid, svid, sdevid, revid, 0, name}
#define PVID_END {0, 0, 0, 0, 0, 0, NULL}
/* No drivers in tree currently match on anything except vendor:device. */
#define IFLIB_PNP_DESCR "U32:vendor;U32:device;U32:#;U32:#;" \
"U32:#;U32:#;D:#"
#define IFLIB_PNP_INFO(b, u, t) \
MODULE_PNP_INFO(IFLIB_PNP_DESCR, b, u, t, nitems(t) - 1)
typedef struct if_txrx {
int (*ift_txd_encap) (void *, if_pkt_info_t);
void (*ift_txd_flush) (void *, uint16_t, qidx_t pidx);
int (*ift_txd_credits_update) (void *, uint16_t qsidx, bool clear);
int (*ift_rxd_available) (void *, uint16_t qsidx, qidx_t pidx, qidx_t budget);
int (*ift_rxd_pkt_get) (void *, if_rxd_info_t ri);
void (*ift_rxd_refill) (void * , if_rxd_update_t iru);
void (*ift_rxd_flush) (void *, uint16_t qsidx, uint8_t flidx, qidx_t pidx);
int (*ift_legacy_intr) (void *);
qidx_t (*ift_txq_select) (void *, struct mbuf *);
qidx_t (*ift_txq_select_v2) (void *, struct mbuf *, if_pkt_info_t);
} *if_txrx_t;
typedef struct if_softc_ctx {
int isc_vectors;
int isc_nrxqsets;
int isc_ntxqsets;
uint16_t __spare0__;
uint32_t __spare1__;
int isc_msix_bar; /* can be model specific - initialize in attach_pre */
int isc_tx_nsegments; /* can be model specific - initialize in attach_pre */
int isc_ntxd[8];
int isc_nrxd[8];
uint32_t isc_txqsizes[8];
uint32_t isc_rxqsizes[8];
/* is there such thing as a descriptor that is more than 248 bytes ? */
uint8_t isc_txd_size[8];
uint8_t isc_rxd_size[8];
int isc_tx_tso_segments_max;
int isc_tx_tso_size_max;
int isc_tx_tso_segsize_max;
int isc_tx_csum_flags;
int isc_capabilities;
int isc_capenable;
int isc_rss_table_size;
int isc_rss_table_mask;
int isc_nrxqsets_max;
int isc_ntxqsets_max;
uint32_t __spare2__;
iflib_intr_mode_t isc_intr;
uint16_t isc_rxd_buf_size[8]; /* set at init time by driver, 0
means use iflib-calculated size
based on isc_max_frame_size */
uint16_t isc_max_frame_size; /* set at init time by driver */
uint16_t isc_min_frame_size; /* set at init time by driver, only used if
IFLIB_NEED_ETHER_PAD is set. */
uint32_t isc_pause_frames; /* set by driver for iflib_timer to detect */
uint32_t __spare3__;
uint32_t __spare4__;
uint32_t __spare5__;
uint32_t __spare6__;
uint32_t __spare7__;
uint32_t __spare8__;
caddr_t __spare9__;
int isc_disable_msix;
if_txrx_t isc_txrx;
struct ifmedia *isc_media;
bus_size_t isc_dma_width; /* device dma width in bits, 0 means
use BUS_SPACE_MAXADDR instead */
} *if_softc_ctx_t;
/*
* Initialization values for device
*/
struct if_shared_ctx {
unsigned isc_magic;
driver_t *isc_driver;
bus_size_t isc_q_align;
bus_size_t isc_tx_maxsize;
bus_size_t isc_tx_maxsegsize;
bus_size_t isc_tso_maxsize;
bus_size_t isc_tso_maxsegsize;
bus_size_t isc_rx_maxsize;
bus_size_t isc_rx_maxsegsize;
int isc_rx_nsegments;
int isc_admin_intrcnt; /* # of admin/link interrupts */
/* fields necessary for probe */
const pci_vendor_info_t *isc_vendor_info;
const char *isc_driver_version;
/* optional function to transform the read values to match the table*/
void (*isc_parse_devinfo) (uint16_t *device_id, uint16_t *subvendor_id,
uint16_t *subdevice_id, uint16_t *rev_id);
int isc_nrxd_min[8];
int isc_nrxd_default[8];
int isc_nrxd_max[8];
int isc_ntxd_min[8];
int isc_ntxd_default[8];
int isc_ntxd_max[8];
/* actively used during operation */
int isc_nfl __aligned(CACHE_LINE_SIZE);
int isc_ntxqs; /* # of tx queues per tx qset - usually 1 */
int isc_nrxqs; /* # of rx queues per rx qset - intel 1, chelsio 2, broadcom 3 */
int __spare0__;
int isc_tx_reclaim_thresh;
int isc_flags;
};
typedef struct iflib_dma_info {
bus_addr_t idi_paddr;
caddr_t idi_vaddr;
bus_dma_tag_t idi_tag;
bus_dmamap_t idi_map;
uint32_t idi_size;
} *iflib_dma_info_t;
#define IFLIB_MAGIC 0xCAFEF00D
typedef enum {
/* Interrupt or softirq handles only receive */
IFLIB_INTR_RX,
/* Interrupt or softirq handles only transmit */
IFLIB_INTR_TX,
/*
* Interrupt will check for both pending receive
* and available tx credits and dispatch a task
* for one or both depending on the disposition
* of the respective queues.
*/
IFLIB_INTR_RXTX,
/*
* Other interrupt - typically link status and
* or error conditions.
*/
IFLIB_INTR_ADMIN,
/* Softirq (task) for iov handling */
IFLIB_INTR_IOV,
} iflib_intr_type_t;
/*
* Interface has a separate completion queue for RX
*/
#define IFLIB_HAS_RXCQ 0x01
/*
* Driver has already allocated vectors
*/
#define IFLIB_SKIP_MSIX 0x02
/*
* Interface is a virtual function
*/
#define IFLIB_IS_VF 0x04
/*
* Interface has a separate completion queue for TX
*/
#define IFLIB_HAS_TXCQ 0x08
/*
* Interface does checksum in place
*/
#define IFLIB_NEED_SCRATCH 0x10
/*
* Interface doesn't expect in_pseudo for th_sum
*/
#define IFLIB_TSO_INIT_IP 0x20
/*
* Interface doesn't align IP header
*/
#define IFLIB_DO_RX_FIXUP 0x40
/*
* Driver needs csum zeroed for offloading
*/
#define IFLIB_NEED_ZERO_CSUM 0x80
/*
* Driver needs frames padded to some minimum length
*/
#define IFLIB_NEED_ETHER_PAD 0x100
#define IFLIB_SPARE7 0x200
#define IFLIB_SPARE6 0x400
#define IFLIB_SPARE5 0x800
#define IFLIB_SPARE4 0x1000
#define IFLIB_SPARE3 0x2000
#define IFLIB_SPARE2 0x4000
#define IFLIB_SPARE1 0x8000
/*
* Interface needs admin task to ignore interface up/down status
*/
#define IFLIB_ADMIN_ALWAYS_RUN 0x10000
/*
* Driver will pass the media
*/
#define IFLIB_DRIVER_MEDIA 0x20000
/*
* When using a single hardware interrupt for the interface, only process RX
* interrupts instead of doing combined RX/TX processing.
*/
#define IFLIB_SINGLE_IRQ_RX_ONLY 0x40000
#define IFLIB_SPARE0 0x80000
/*
* Interface has an admin completion queue
*/
#define IFLIB_HAS_ADMINCQ 0x100000
/*
* Interface needs to preserve TX ring indices across restarts.
*/
#define IFLIB_PRESERVE_TX_INDICES 0x200000
/* The following IFLIB_FEATURE_* defines are for driver modules to determine
* what features this version of iflib supports. They shall be defined to the
* first __FreeBSD_version that introduced the feature.
*/
/*
* Driver can set its own TX queue selection function
* as ift_txq_select in struct if_txrx
*/
#define IFLIB_FEATURE_QUEUE_SELECT 1400050
/*
* Driver can set its own TX queue selection function
* as ift_txq_select_v2 in struct if_txrx. This includes
* having iflib send L3+ extra header information to the
* function.
*/
#define IFLIB_FEATURE_QUEUE_SELECT_V2 1400073
/*
* These enum values are used in iflib_needs_restart to indicate to iflib
* functions whether or not the interface needs restarting when certain events
* happen.
*/
enum iflib_restart_event {
IFLIB_RESTART_VLAN_CONFIG,
};
/*
* field accessors
*/
void *iflib_get_softc(if_ctx_t ctx);
device_t iflib_get_dev(if_ctx_t ctx);
if_t iflib_get_ifp(if_ctx_t ctx);
struct ifmedia *iflib_get_media(if_ctx_t ctx);
if_softc_ctx_t iflib_get_softc_ctx(if_ctx_t ctx);
if_shared_ctx_t iflib_get_sctx(if_ctx_t ctx);
void iflib_set_mac(if_ctx_t ctx, uint8_t mac[ETHER_ADDR_LEN]);
void iflib_request_reset(if_ctx_t ctx);
uint8_t iflib_in_detach(if_ctx_t ctx);
uint32_t iflib_get_rx_mbuf_sz(if_ctx_t ctx);
/*
* If the driver can plug cleanly in to newbus use these
*/
int iflib_device_probe(device_t);
int iflib_device_attach(device_t);
int iflib_device_detach(device_t);
int iflib_device_suspend(device_t);
int iflib_device_resume(device_t);
int iflib_device_shutdown(device_t);
/*
* Use this instead of iflib_device_probe if the driver should report
* BUS_PROBE_VENDOR instead of BUS_PROBE_DEFAULT. (For example, an out-of-tree
* driver based on iflib).
*/
int iflib_device_probe_vendor(device_t);
int iflib_device_iov_init(device_t, uint16_t, const nvlist_t *);
void iflib_device_iov_uninit(device_t);
int iflib_device_iov_add_vf(device_t, uint16_t, const nvlist_t *);
/*
* If the driver can't plug cleanly in to newbus
* use these
*/
int iflib_device_register(device_t dev, void *softc, if_shared_ctx_t sctx, if_ctx_t *ctxp);
int iflib_device_deregister(if_ctx_t);
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);
int iflib_irq_alloc_generic(if_ctx_t ctx, if_irq_t irq, int rid,
iflib_intr_type_t type, driver_filter_t *filter,
void *filter_arg, int qid, const char *name);
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);
void iflib_irq_free(if_ctx_t ctx, if_irq_t irq);
void iflib_io_tqg_attach(struct grouptask *gt, void *uniq, int cpu,
const char *name);
void iflib_config_gtask_init(void *ctx, struct grouptask *gtask,
gtask_fn_t *fn, const char *name);
void iflib_config_gtask_deinit(struct grouptask *gtask);
void iflib_tx_intr_deferred(if_ctx_t ctx, int txqid);
void iflib_rx_intr_deferred(if_ctx_t ctx, int rxqid);
void iflib_admin_intr_deferred(if_ctx_t ctx);
void iflib_iov_intr_deferred(if_ctx_t ctx);
void iflib_link_state_change(if_ctx_t ctx, int linkstate, uint64_t baudrate);
int iflib_dma_alloc(if_ctx_t ctx, int size, iflib_dma_info_t dma, int mapflags);
int iflib_dma_alloc_align(if_ctx_t ctx, int size, int align, iflib_dma_info_t dma, int mapflags);
void iflib_dma_free(iflib_dma_info_t dma);
int iflib_dma_alloc_multi(if_ctx_t ctx, int *sizes, iflib_dma_info_t *dmalist, int mapflags, int count);
void iflib_dma_free_multi(iflib_dma_info_t *dmalist, int count);
struct sx *iflib_ctx_lock_get(if_ctx_t);
void iflib_led_create(if_ctx_t ctx);
void iflib_add_int_delay_sysctl(if_ctx_t, const char *, const char *,
if_int_delay_info_t, int, int);
#endif /* __IFLIB_H_ */
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