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 | |
41 | int efx_siena_sriov_configure(struct efx_nic *efx, int num_vfs); |
42 | int efx_siena_sriov_init(struct efx_nic *efx); |
43 | void efx_siena_sriov_fini(struct efx_nic *efx); |
44 | int efx_siena_sriov_mac_address_changed(struct efx_nic *efx); |
45 | bool efx_siena_sriov_wanted(struct efx_nic *efx); |
46 | void efx_siena_sriov_reset(struct efx_nic *efx); |
47 | void efx_siena_sriov_flr(struct efx_nic *efx, unsigned flr); |
48 | |
49 | int efx_siena_sriov_set_vf_mac(struct efx_nic *efx, int vf, const u8 *mac); |
50 | int efx_siena_sriov_set_vf_vlan(struct efx_nic *efx, int vf, |
51 | u16 vlan, u8 qos); |
52 | int efx_siena_sriov_set_vf_spoofchk(struct efx_nic *efx, int vf, |
53 | bool spoofchk); |
54 | int 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 | |
59 | static inline bool efx_siena_sriov_enabled(struct efx_nic *efx) |
60 | { |
61 | return efx->vf_init_count != 0; |
62 | } |
63 | |
64 | int efx_init_sriov(void); |
65 | void efx_fini_sriov(void); |
66 | #else /* !CONFIG_SFC_SIENA_SRIOV */ |
67 | static inline bool efx_siena_sriov_enabled(struct efx_nic *efx) |
68 | { |
69 | return false; |
70 | } |
71 | #endif /* CONFIG_SFC_SIENA_SRIOV */ |
72 | |
73 | void efx_siena_sriov_probe(struct efx_nic *efx); |
74 | void efx_siena_sriov_tx_flush_done(struct efx_nic *efx, efx_qword_t *event); |
75 | void efx_siena_sriov_rx_flush_done(struct efx_nic *efx, efx_qword_t *event); |
76 | void efx_siena_sriov_event(struct efx_channel *channel, efx_qword_t *event); |
77 | void efx_siena_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq); |
78 | |
79 | #endif /* SIENA_SRIOV_H */ |
80 | |