| Shradha Shah | 7fa8d54 | 2015-05-06 00:55:13 +0100 | [diff] [blame^] | 1 | /**************************************************************************** |
| 2 | * Driver for Solarflare network controllers and boards |
| 3 | * Copyright 2015 Solarflare Communications Inc. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 as published |
| 7 | * by the Free Software Foundation, incorporated herein by reference. |
| 8 | */ |
| 9 | |
| 10 | #ifndef SIENA_SRIOV_H |
| 11 | #define SIENA_SRIOV_H |
| 12 | |
| 13 | #include "net_driver.h" |
| 14 | |
| 15 | /* On the SFC9000 family each port is associated with 1 PCI physical |
| 16 | * function (PF) handled by sfc and a configurable number of virtual |
| 17 | * functions (VFs) that may be handled by some other driver, often in |
| 18 | * a VM guest. The queue pointer registers are mapped in both PF and |
| 19 | * VF BARs such that an 8K region provides access to a single RX, TX |
| 20 | * and event queue (collectively a Virtual Interface, VI or VNIC). |
| 21 | * |
| 22 | * The PF has access to all 1024 VIs while VFs are mapped to VIs |
| 23 | * according to VI_BASE and VI_SCALE: VF i has access to VIs numbered |
| 24 | * in range [VI_BASE + i << VI_SCALE, VI_BASE + i + 1 << VI_SCALE). |
| 25 | * The number of VIs and the VI_SCALE value are configurable but must |
| 26 | * be established at boot time by firmware. |
| 27 | */ |
| 28 | |
| 29 | /* Maximum VI_SCALE parameter supported by Siena */ |
| 30 | #define EFX_VI_SCALE_MAX 6 |
| 31 | /* Base VI to use for SR-IOV. Must be aligned to (1 << EFX_VI_SCALE_MAX), |
| 32 | * so this is the smallest allowed value. |
| 33 | */ |
| 34 | #define EFX_VI_BASE 128U |
| 35 | /* Maximum number of VFs allowed */ |
| 36 | #define EFX_VF_COUNT_MAX 127 |
| 37 | /* Limit EVQs on VFs to be only 8k to reduce buffer table reservation */ |
| 38 | #define EFX_MAX_VF_EVQ_SIZE 8192UL |
| 39 | /* The number of buffer table entries reserved for each VI on a VF */ |
| 40 | #define EFX_VF_BUFTBL_PER_VI \ |
| 41 | ((EFX_MAX_VF_EVQ_SIZE + 2 * EFX_MAX_DMAQ_SIZE) * \ |
| 42 | sizeof(efx_qword_t) / EFX_BUF_SIZE) |
| 43 | |
| 44 | int efx_siena_sriov_init(struct efx_nic *efx); |
| 45 | void efx_siena_sriov_fini(struct efx_nic *efx); |
| 46 | void efx_siena_sriov_mac_address_changed(struct efx_nic *efx); |
| 47 | bool efx_siena_sriov_wanted(struct efx_nic *efx); |
| 48 | void efx_siena_sriov_reset(struct efx_nic *efx); |
| 49 | void efx_siena_sriov_flr(struct efx_nic *efx, unsigned flr); |
| 50 | |
| 51 | int efx_siena_sriov_set_vf_mac(struct efx_nic *efx, int vf, u8 *mac); |
| 52 | int efx_siena_sriov_set_vf_vlan(struct efx_nic *efx, int vf, |
| 53 | u16 vlan, u8 qos); |
| 54 | int efx_siena_sriov_set_vf_spoofchk(struct efx_nic *efx, int vf, |
| 55 | bool spoofchk); |
| 56 | int efx_siena_sriov_get_vf_config(struct efx_nic *efx, int vf, |
| 57 | struct ifla_vf_info *ivf); |
| 58 | |
| 59 | #ifdef CONFIG_SFC_SRIOV |
| 60 | |
| 61 | static inline bool efx_siena_sriov_enabled(struct efx_nic *efx) |
| 62 | { |
| 63 | return efx->vf_init_count != 0; |
| 64 | } |
| 65 | #else /* !CONFIG_SFC_SRIOV */ |
| 66 | static inline bool efx_siena_sriov_enabled(struct efx_nic *efx) |
| 67 | { |
| 68 | return false; |
| 69 | } |
| 70 | #endif /* CONFIG_SFC_SRIOV */ |
| 71 | |
| 72 | void efx_siena_sriov_probe(struct efx_nic *efx); |
| 73 | void efx_siena_sriov_tx_flush_done(struct efx_nic *efx, efx_qword_t *event); |
| 74 | void efx_siena_sriov_rx_flush_done(struct efx_nic *efx, efx_qword_t *event); |
| 75 | void efx_siena_sriov_event(struct efx_channel *channel, efx_qword_t *event); |
| 76 | void efx_siena_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq); |
| 77 | |
| 78 | #endif /* SIENA_SRIOV_H */ |