cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

siena_sriov.h (3086B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/****************************************************************************
      3 * Driver for Solarflare network controllers and boards
      4 * Copyright 2015 Solarflare Communications Inc.
      5 */
      6
      7#ifndef SIENA_SRIOV_H
      8#define SIENA_SRIOV_H
      9
     10#include "net_driver.h"
     11
     12/* On the SFC9000 family each port is associated with 1 PCI physical
     13 * function (PF) handled by sfc and a configurable number of virtual
     14 * functions (VFs) that may be handled by some other driver, often in
     15 * a VM guest.  The queue pointer registers are mapped in both PF and
     16 * VF BARs such that an 8K region provides access to a single RX, TX
     17 * and event queue (collectively a Virtual Interface, VI or VNIC).
     18 *
     19 * The PF has access to all 1024 VIs while VFs are mapped to VIs
     20 * according to VI_BASE and VI_SCALE: VF i has access to VIs numbered
     21 * in range [VI_BASE + i << VI_SCALE, VI_BASE + i + 1 << VI_SCALE).
     22 * The number of VIs and the VI_SCALE value are configurable but must
     23 * be established at boot time by firmware.
     24 */
     25
     26/* Maximum VI_SCALE parameter supported by Siena */
     27#define EFX_VI_SCALE_MAX 6
     28/* Base VI to use for SR-IOV. Must be aligned to (1 << EFX_VI_SCALE_MAX),
     29 * so this is the smallest allowed value.
     30 */
     31#define EFX_VI_BASE 128U
     32/* Maximum number of VFs allowed */
     33#define EFX_VF_COUNT_MAX 127
     34/* Limit EVQs on VFs to be only 8k to reduce buffer table reservation */
     35#define EFX_MAX_VF_EVQ_SIZE 8192UL
     36/* The number of buffer table entries reserved for each VI on a VF */
     37#define EFX_VF_BUFTBL_PER_VI					\
     38	((EFX_MAX_VF_EVQ_SIZE + 2 * EFX_MAX_DMAQ_SIZE) *	\
     39	 sizeof(efx_qword_t) / EFX_BUF_SIZE)
     40
     41int efx_siena_sriov_configure(struct efx_nic *efx, int num_vfs);
     42int efx_siena_sriov_init(struct efx_nic *efx);
     43void efx_siena_sriov_fini(struct efx_nic *efx);
     44int efx_siena_sriov_mac_address_changed(struct efx_nic *efx);
     45bool efx_siena_sriov_wanted(struct efx_nic *efx);
     46void efx_siena_sriov_reset(struct efx_nic *efx);
     47void efx_siena_sriov_flr(struct efx_nic *efx, unsigned flr);
     48
     49int efx_siena_sriov_set_vf_mac(struct efx_nic *efx, int vf, const u8 *mac);
     50int efx_siena_sriov_set_vf_vlan(struct efx_nic *efx, int vf,
     51				u16 vlan, u8 qos);
     52int efx_siena_sriov_set_vf_spoofchk(struct efx_nic *efx, int vf,
     53				    bool spoofchk);
     54int efx_siena_sriov_get_vf_config(struct efx_nic *efx, int vf,
     55				  struct ifla_vf_info *ivf);
     56
     57#ifdef CONFIG_SFC_SIENA_SRIOV
     58
     59static inline bool efx_siena_sriov_enabled(struct efx_nic *efx)
     60{
     61	return efx->vf_init_count != 0;
     62}
     63
     64int efx_init_sriov(void);
     65void efx_fini_sriov(void);
     66#else /* !CONFIG_SFC_SIENA_SRIOV */
     67static inline bool efx_siena_sriov_enabled(struct efx_nic *efx)
     68{
     69	return false;
     70}
     71#endif /* CONFIG_SFC_SIENA_SRIOV */
     72
     73void efx_siena_sriov_probe(struct efx_nic *efx);
     74void efx_siena_sriov_tx_flush_done(struct efx_nic *efx, efx_qword_t *event);
     75void efx_siena_sriov_rx_flush_done(struct efx_nic *efx, efx_qword_t *event);
     76void efx_siena_sriov_event(struct efx_channel *channel, efx_qword_t *event);
     77void efx_siena_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq);
     78
     79#endif /* SIENA_SRIOV_H */