diff options
Diffstat (limited to 'drivers/net/ethernet/sfc/nic.h')
| -rw-r--r-- | drivers/net/ethernet/sfc/nic.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/nic.h b/drivers/net/ethernet/sfc/nic.h index 5df7da8b8ebf..246c4140453c 100644 --- a/drivers/net/ethernet/sfc/nic.h +++ b/drivers/net/ethernet/sfc/nic.h @@ -169,6 +169,95 @@ static inline struct efx_mcdi_mon *efx_mcdi_mon(struct efx_nic *efx) } #endif +/* + * On the SFC9000 family each port is associated with 1 PCI physical + * function (PF) handled by sfc and a configurable number of virtual + * functions (VFs) that may be handled by some other driver, often in + * a VM guest. The queue pointer registers are mapped in both PF and + * VF BARs such that an 8K region provides access to a single RX, TX + * and event queue (collectively a Virtual Interface, VI or VNIC). + * + * The PF has access to all 1024 VIs while VFs are mapped to VIs + * according to VI_BASE and VI_SCALE: VF i has access to VIs numbered + * in range [VI_BASE + i << VI_SCALE, VI_BASE + i + 1 << VI_SCALE). + * The number of VIs and the VI_SCALE value are configurable but must + * be established at boot time by firmware. + */ + +/* Maximum VI_SCALE parameter supported by Siena */ +#define EFX_VI_SCALE_MAX 6 +/* Base VI to use for SR-IOV. Must be aligned to (1 << EFX_VI_SCALE_MAX), + * so this is the smallest allowed value. */ +#define EFX_VI_BASE 128U +/* Maximum number of VFs allowed */ +#define EFX_VF_COUNT_MAX 127 +/* Limit EVQs on VFs to be only 8k to reduce buffer table reservation */ +#define EFX_MAX_VF_EVQ_SIZE 8192UL +/* The number of buffer table entries reserved for each VI on a VF */ +#define EFX_VF_BUFTBL_PER_VI \ + ((EFX_MAX_VF_EVQ_SIZE + 2 * EFX_MAX_DMAQ_SIZE) * \ + sizeof(efx_qword_t) / EFX_BUF_SIZE) + +#ifdef CONFIG_SFC_SRIOV + +static inline bool efx_sriov_wanted(struct efx_nic *efx) +{ + return efx->vf_count != 0; +} +static inline bool efx_sriov_enabled(struct efx_nic *efx) +{ + return efx->vf_init_count != 0; +} +static inline unsigned int efx_vf_size(struct efx_nic *efx) +{ + return 1 << efx->vi_scale; +} + +extern int efx_init_sriov(void); +extern void efx_sriov_probe(struct efx_nic *efx); +extern int efx_sriov_init(struct efx_nic *efx); +extern void efx_sriov_mac_address_changed(struct efx_nic *efx); +extern void efx_sriov_tx_flush_done(struct efx_nic *efx, efx_qword_t *event); +extern void efx_sriov_rx_flush_done(struct efx_nic *efx, efx_qword_t *event); +extern void efx_sriov_event(struct efx_channel *channel, efx_qword_t *event); +extern void efx_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq); +extern void efx_sriov_flr(struct efx_nic *efx, unsigned flr); +extern void efx_sriov_reset(struct efx_nic *efx); +extern void efx_sriov_fini(struct efx_nic *efx); +extern void efx_fini_sriov(void); + +#else + +static inline bool efx_sriov_wanted(struct efx_nic *efx) { return false; } +static inline bool efx_sriov_enabled(struct efx_nic *efx) { return false; } +static inline unsigned int efx_vf_size(struct efx_nic *efx) { return 0; } + +static inline int efx_init_sriov(void) { return 0; } +static inline void efx_sriov_probe(struct efx_nic *efx) {} +static inline int efx_sriov_init(struct efx_nic *efx) { return -EOPNOTSUPP; } +static inline void efx_sriov_mac_address_changed(struct efx_nic *efx) {} +static inline void efx_sriov_tx_flush_done(struct efx_nic *efx, + efx_qword_t *event) {} +static inline void efx_sriov_rx_flush_done(struct efx_nic *efx, + efx_qword_t *event) {} +static inline void efx_sriov_event(struct efx_channel *channel, + efx_qword_t *event) {} +static inline void efx_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq) {} +static inline void efx_sriov_flr(struct efx_nic *efx, unsigned flr) {} +static inline void efx_sriov_reset(struct efx_nic *efx) {} +static inline void efx_sriov_fini(struct efx_nic *efx) {} +static inline void efx_fini_sriov(void) {} + +#endif + +extern int efx_sriov_set_vf_mac(struct net_device *dev, int vf, u8 *mac); +extern int efx_sriov_set_vf_vlan(struct net_device *dev, int vf, + u16 vlan, u8 qos); +extern int efx_sriov_get_vf_config(struct net_device *dev, int vf, + struct ifla_vf_info *ivf); +extern int efx_sriov_set_vf_spoofchk(struct net_device *net_dev, int vf, + bool spoofchk); + extern const struct efx_nic_type falcon_a1_nic_type; extern const struct efx_nic_type falcon_b0_nic_type; extern const struct efx_nic_type siena_a0_nic_type; |