^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright(c) 2020 Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #ifndef HFI1_NETDEV_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #define HFI1_NETDEV_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "hfi.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/xarray.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * struct hfi1_netdev_rxq - Receive Queue for HFI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * dummy netdev. Both IPoIB and VNIC netdevices will be working on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * top of this device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * @napi: napi object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * @priv: ptr to netdev_priv
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * @rcd: ptr to receive context data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) struct hfi1_netdev_rxq {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) struct napi_struct napi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct hfi1_netdev_priv *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct hfi1_ctxtdata *rcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * Number of netdev contexts used. Ensure it is less than or equal to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * max queues supported by VNIC (HFI1_VNIC_MAX_QUEUE).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define HFI1_MAX_NETDEV_CTXTS 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) /* Number of NETDEV RSM entries */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define NUM_NETDEV_MAP_ENTRIES HFI1_MAX_NETDEV_CTXTS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * struct hfi1_netdev_priv: data required to setup and run HFI netdev.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * @dd: hfi1_devdata
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * @rxq: pointer to dummy netdev receive queues.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * @num_rx_q: number of receive queues
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * @rmt_index: first free index in RMT Array
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * @msix_start: first free MSI-X interrupt vector.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * @dev_tbl: netdev table for unique identifier VNIC and IPoIb VLANs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * @enabled: atomic counter of netdevs enabling receive queues.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * When 0 NAPI will be disabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * @netdevs: atomic counter of netdevs using dummy netdev.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * When 0 receive queues will be freed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct hfi1_netdev_priv {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct hfi1_devdata *dd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct hfi1_netdev_rxq *rxq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) int num_rx_q;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) int rmt_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) struct xarray dev_tbl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /* count of enabled napi polls */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) atomic_t enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /* count of netdevs on top */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) atomic_t netdevs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static inline
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) struct hfi1_netdev_priv *hfi1_netdev_priv(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) return (struct hfi1_netdev_priv *)&dev[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static inline
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) int hfi1_netdev_ctxt_count(struct hfi1_devdata *dd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) struct hfi1_netdev_priv *priv = hfi1_netdev_priv(dd->dummy_netdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) return priv->num_rx_q;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) static inline
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) struct hfi1_ctxtdata *hfi1_netdev_get_ctxt(struct hfi1_devdata *dd, int ctxt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct hfi1_netdev_priv *priv = hfi1_netdev_priv(dd->dummy_netdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return priv->rxq[ctxt].rcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static inline
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) int hfi1_netdev_get_free_rmt_idx(struct hfi1_devdata *dd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) struct hfi1_netdev_priv *priv = hfi1_netdev_priv(dd->dummy_netdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) return priv->rmt_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static inline
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) void hfi1_netdev_set_free_rmt_idx(struct hfi1_devdata *dd, int rmt_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct hfi1_netdev_priv *priv = hfi1_netdev_priv(dd->dummy_netdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) priv->rmt_start = rmt_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) u32 hfi1_num_netdev_contexts(struct hfi1_devdata *dd, u32 available_contexts,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct cpumask *cpu_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) void hfi1_netdev_enable_queues(struct hfi1_devdata *dd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) void hfi1_netdev_disable_queues(struct hfi1_devdata *dd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) int hfi1_netdev_rx_init(struct hfi1_devdata *dd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) int hfi1_netdev_rx_destroy(struct hfi1_devdata *dd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) int hfi1_netdev_alloc(struct hfi1_devdata *dd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) void hfi1_netdev_free(struct hfi1_devdata *dd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) int hfi1_netdev_add_data(struct hfi1_devdata *dd, int id, void *data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) void *hfi1_netdev_remove_data(struct hfi1_devdata *dd, int id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) void *hfi1_netdev_get_data(struct hfi1_devdata *dd, int id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) void *hfi1_netdev_get_first_data(struct hfi1_devdata *dd, int *start_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) /* chip.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) int hfi1_netdev_rx_napi(struct napi_struct *napi, int budget);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) #endif /* HFI1_NETDEV_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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