/* Non-zero granularity of counter used to implement aggregation timeout */ #define IPA_AGGR_GRANULARITY 500 /* microseconds */
#define IPA_MTU ETH_DATA_LEN
enum ipa_endpoint_name {
IPA_ENDPOINT_AP_COMMAND_TX,
IPA_ENDPOINT_AP_LAN_RX,
IPA_ENDPOINT_AP_MODEM_TX,
IPA_ENDPOINT_AP_MODEM_RX,
IPA_ENDPOINT_MODEM_COMMAND_TX,
IPA_ENDPOINT_MODEM_LAN_TX,
IPA_ENDPOINT_MODEM_LAN_RX,
IPA_ENDPOINT_MODEM_AP_TX,
IPA_ENDPOINT_MODEM_AP_RX,
IPA_ENDPOINT_MODEM_DL_NLO_TX,
IPA_ENDPOINT_COUNT, /* Number of names (not an index) */
};
#define IPA_ENDPOINT_MAX 36 /* Max supported by driver */
/** * struct ipa_endpoint_tx - Endpoint configuration for TX endpoints * @seq_type: primary packet processing sequencer type * @seq_rep_type: sequencer type for replication processing * @status_endpoint: endpoint to which status elements are sent * * The @status_endpoint is only valid if the endpoint's @status_enable * flag is set.
*/ struct ipa_endpoint_tx { enum ipa_seq_type seq_type; enum ipa_seq_rep_type seq_rep_type; enum ipa_endpoint_name status_endpoint;
};
/** * struct ipa_endpoint_rx - Endpoint configuration for RX endpoints * @buffer_size: requested receive buffer size (bytes) * @pad_align: power-of-2 boundary to which packet payload is aligned * @aggr_time_limit: time before aggregation closes (microseconds) * @aggr_hard_limit: whether aggregation closes before or after boundary * @aggr_close_eof: whether aggregation closes on end-of-frame * @holb_drop: whether to drop packets to avoid head-of-line blocking * * The actual size of the receive buffer is rounded up if necessary * to be a power-of-2 number of pages. * * With each packet it transfers, the IPA hardware can perform certain * transformations of its packet data. One of these is adding pad bytes * to the end of the packet data so the result ends on a power-of-2 boundary. * * It is also able to aggregate multiple packets into a single receive buffer. * Aggregation is "open" while a buffer is being filled, and "closes" when * certain criteria are met. * * A time limit can be specified to close aggregation. Aggregation will be * closed if this period passes after data is first written into a receive * buffer. If not specified, no time limit is imposed. * * Insufficient space available in the receive buffer can close aggregation. * The aggregation byte limit defines the point (in units of 1024 bytes) in * the buffer where aggregation closes. With a "soft" aggregation limit, * aggregation closes when a packet written to the buffer *crosses* that * aggregation limit. With a "hard" aggregation limit, aggregation will * close *before* writing a packet that would cross that boundary.
*/ struct ipa_endpoint_rx {
u32 buffer_size;
u32 pad_align;
u32 aggr_time_limit; bool aggr_hard_limit; bool aggr_close_eof; bool holb_drop;
};
/** * struct ipa_endpoint_config - IPA endpoint hardware configuration * @resource_group: resource group to assign endpoint to * @checksum: whether checksum offload is enabled * @qmap: whether endpoint uses QMAP protocol * @aggregation: whether endpoint supports aggregation * @status_enable: whether endpoint uses status elements * @dma_mode: whether endpoint operates in DMA mode * @dma_endpoint: peer endpoint, if operating in DMA mode * @tx: TX-specific endpoint information (see above) * @rx: RX-specific endpoint information (see above)
*/ struct ipa_endpoint_config {
u32 resource_group; bool checksum; bool qmap; bool aggregation; bool status_enable; bool dma_mode; enum ipa_endpoint_name dma_endpoint; union { struct ipa_endpoint_tx tx; struct ipa_endpoint_rx rx;
};
};
/** * enum ipa_replenish_flag: RX buffer replenish flags * * @IPA_REPLENISH_ENABLED: Whether receive buffer replenishing is enabled * @IPA_REPLENISH_ACTIVE: Whether replenishing is underway * @IPA_REPLENISH_COUNT: Number of defined replenish flags
*/ enum ipa_replenish_flag {
IPA_REPLENISH_ENABLED,
IPA_REPLENISH_ACTIVE,
IPA_REPLENISH_COUNT, /* Number of flags (must be last) */
};
/** * struct ipa_endpoint - IPA endpoint information * @ipa: IPA pointer * @ee_id: Execution environmnent endpoint is associated with * @channel_id: GSI channel used by the endpoint * @endpoint_id: IPA endpoint number * @toward_ipa: Endpoint direction (true = TX, false = RX) * @config: Default endpoint configuration * @skb_frag_max: Maximum allowed number of TX SKB fragments * @evt_ring_id: GSI event ring used by the endpoint * @netdev: Network device pointer, if endpoint uses one * @replenish_flags: Replenishing state flags * @replenish_count: Total number of replenish transactions committed * @replenish_work: Work item used for repeated replenish failures
*/ struct ipa_endpoint { struct ipa *ipa; enum gsi_ee_id ee_id;
u32 channel_id;
u32 endpoint_id; bool toward_ipa; struct ipa_endpoint_config config;
u32 skb_frag_max; /* Used for netdev TX only */
u32 evt_ring_id;
/* Net device this endpoint is associated with, if any */ struct net_device *netdev;
/* Receive buffer replenishing for RX endpoints */
DECLARE_BITMAP(replenish_flags, IPA_REPLENISH_COUNT);
u64 replenish_count; struct delayed_work replenish_work; /* global wq */
};
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.
