diff options
Diffstat (limited to 'drivers/net/ethernet/google/gve/gve_adminq.h')
| -rw-r--r-- | drivers/net/ethernet/google/gve/gve_adminq.h | 50 |
1 files changed, 45 insertions, 5 deletions
diff --git a/drivers/net/ethernet/google/gve/gve_adminq.h b/drivers/net/ethernet/google/gve/gve_adminq.h index d320c2ffd87c..4b1485b11a7b 100644 --- a/drivers/net/ethernet/google/gve/gve_adminq.h +++ b/drivers/net/ethernet/google/gve/gve_adminq.h @@ -1,7 +1,7 @@ /* SPDX-License-Identifier: (GPL-2.0 OR MIT) * Google virtual Ethernet (gve) driver * - * Copyright (C) 2015-2019 Google, Inc. + * Copyright (C) 2015-2021 Google, Inc. */ #ifndef _GVE_ADMINQ_H @@ -82,14 +82,54 @@ static_assert(sizeof(struct gve_device_descriptor) == 40); struct gve_device_option { __be16 option_id; __be16 option_length; - __be32 feat_mask; + __be32 required_features_mask; }; static_assert(sizeof(struct gve_device_option) == 8); -#define GVE_DEV_OPT_ID_RAW_ADDRESSING 0x1 -#define GVE_DEV_OPT_LEN_RAW_ADDRESSING 0x0 -#define GVE_DEV_OPT_FEAT_MASK_RAW_ADDRESSING 0x0 +struct gve_device_option_gqi_rda { + __be32 supported_features_mask; +}; + +static_assert(sizeof(struct gve_device_option_gqi_rda) == 4); + +struct gve_device_option_gqi_qpl { + __be32 supported_features_mask; +}; + +static_assert(sizeof(struct gve_device_option_gqi_qpl) == 4); + +struct gve_device_option_dqo_rda { + __be32 supported_features_mask; + __be16 tx_comp_ring_entries; + __be16 rx_buff_ring_entries; +}; + +static_assert(sizeof(struct gve_device_option_dqo_rda) == 8); + +/* Terminology: + * + * RDA - Raw DMA Addressing - Buffers associated with SKBs are directly DMA + * mapped and read/updated by the device. + * + * QPL - Queue Page Lists - Driver uses bounce buffers which are DMA mapped with + * the device for read/write and data is copied from/to SKBs. + */ +enum gve_dev_opt_id { + GVE_DEV_OPT_ID_GQI_RAW_ADDRESSING = 0x1, + GVE_DEV_OPT_ID_GQI_RDA = 0x2, + GVE_DEV_OPT_ID_GQI_QPL = 0x3, + GVE_DEV_OPT_ID_DQO_RDA = 0x4, +}; + +enum gve_dev_opt_req_feat_mask { + GVE_DEV_OPT_REQ_FEAT_MASK_GQI_RAW_ADDRESSING = 0x0, + GVE_DEV_OPT_REQ_FEAT_MASK_GQI_RDA = 0x0, + GVE_DEV_OPT_REQ_FEAT_MASK_GQI_QPL = 0x0, + GVE_DEV_OPT_REQ_FEAT_MASK_DQO_RDA = 0x0, +}; + +#define GVE_DEV_OPT_LEN_GQI_RAW_ADDRESSING 0x0 struct gve_adminq_configure_device_resources { __be64 counter_array; |