// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2019, Intel Corporation. */ #include <net/xdp_sock_drv.h> #include "ice_base.h" #include "ice_lib.h" #include "ice_dcb_lib.h" #include "ice_sriov.h" /** * __ice_vsi_get_qs_contig - Assign a contiguous chunk of queues to VSI * @qs_cfg: gathered variables needed for PF->VSI queues assignment * * Return 0 on success and -ENOMEM in case of no left space in PF queue bitmap */ static int __ice_vsi_get_qs_contig(struct ice_qs_cfg *qs_cfg) { … } /** * __ice_vsi_get_qs_sc - Assign a scattered queues from PF to VSI * @qs_cfg: gathered variables needed for pf->vsi queues assignment * * Return 0 on success and -ENOMEM in case of no left space in PF queue bitmap */ static int __ice_vsi_get_qs_sc(struct ice_qs_cfg *qs_cfg) { … } /** * ice_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled * @pf: the PF being configured * @pf_q: the PF queue * @ena: enable or disable state of the queue * * This routine will wait for the given Rx queue of the PF to reach the * enabled or disabled state. * Returns -ETIMEDOUT in case of failing to reach the requested state after * multiple retries; else will return 0 in case of success. */ static int ice_pf_rxq_wait(struct ice_pf *pf, int pf_q, bool ena) { … } /** * ice_vsi_alloc_q_vector - Allocate memory for a single interrupt vector * @vsi: the VSI being configured * @v_idx: index of the vector in the VSI struct * * We allocate one q_vector and set default value for ITR setting associated * with this q_vector. If allocation fails we return -ENOMEM. */ static int ice_vsi_alloc_q_vector(struct ice_vsi *vsi, u16 v_idx) { … } /** * ice_free_q_vector - Free memory allocated for a specific interrupt vector * @vsi: VSI having the memory freed * @v_idx: index of the vector to be freed */ static void ice_free_q_vector(struct ice_vsi *vsi, int v_idx) { … } /** * ice_cfg_itr_gran - set the ITR granularity to 2 usecs if not already set * @hw: board specific structure */ static void ice_cfg_itr_gran(struct ice_hw *hw) { … } /** * ice_calc_txq_handle - calculate the queue handle * @vsi: VSI that ring belongs to * @ring: ring to get the absolute queue index * @tc: traffic class number */ static u16 ice_calc_txq_handle(struct ice_vsi *vsi, struct ice_tx_ring *ring, u8 tc) { … } /** * ice_cfg_xps_tx_ring - Configure XPS for a Tx ring * @ring: The Tx ring to configure * * This enables/disables XPS for a given Tx descriptor ring * based on the TCs enabled for the VSI that ring belongs to. */ static void ice_cfg_xps_tx_ring(struct ice_tx_ring *ring) { … } /** * ice_setup_tx_ctx - setup a struct ice_tlan_ctx instance * @ring: The Tx ring to configure * @tlan_ctx: Pointer to the Tx LAN queue context structure to be initialized * @pf_q: queue index in the PF space * * Configure the Tx descriptor ring in TLAN context. */ static void ice_setup_tx_ctx(struct ice_tx_ring *ring, struct ice_tlan_ctx *tlan_ctx, u16 pf_q) { … } /** * ice_rx_offset - Return expected offset into page to access data * @rx_ring: Ring we are requesting offset of * * Returns the offset value for ring into the data buffer. */ static unsigned int ice_rx_offset(struct ice_rx_ring *rx_ring) { … } /** * ice_setup_rx_ctx - Configure a receive ring context * @ring: The Rx ring to configure * * Configure the Rx descriptor ring in RLAN context. */ static int ice_setup_rx_ctx(struct ice_rx_ring *ring) { … } static void ice_xsk_pool_fill_cb(struct ice_rx_ring *ring) { … } /** * ice_get_frame_sz - calculate xdp_buff::frame_sz * @rx_ring: the ring being configured * * Return frame size based on underlying PAGE_SIZE */ static unsigned int ice_get_frame_sz(struct ice_rx_ring *rx_ring) { … } /** * ice_vsi_cfg_rxq - Configure an Rx queue * @ring: the ring being configured * * Return 0 on success and a negative value on error. */ static int ice_vsi_cfg_rxq(struct ice_rx_ring *ring) { … } int ice_vsi_cfg_single_rxq(struct ice_vsi *vsi, u16 q_idx) { … } /** * ice_vsi_cfg_frame_size - setup max frame size and Rx buffer length * @vsi: VSI */ static void ice_vsi_cfg_frame_size(struct ice_vsi *vsi) { … } /** * ice_vsi_cfg_rxqs - Configure the VSI for Rx * @vsi: the VSI being configured * * Return 0 on success and a negative value on error * Configure the Rx VSI for operation. */ int ice_vsi_cfg_rxqs(struct ice_vsi *vsi) { … } /** * __ice_vsi_get_qs - helper function for assigning queues from PF to VSI * @qs_cfg: gathered variables needed for pf->vsi queues assignment * * This function first tries to find contiguous space. If it is not successful, * it tries with the scatter approach. * * Return 0 on success and -ENOMEM in case of no left space in PF queue bitmap */ int __ice_vsi_get_qs(struct ice_qs_cfg *qs_cfg) { … } /** * ice_vsi_ctrl_one_rx_ring - start/stop VSI's Rx ring with no busy wait * @vsi: the VSI being configured * @ena: start or stop the Rx ring * @rxq_idx: 0-based Rx queue index for the VSI passed in * @wait: wait or don't wait for configuration to finish in hardware * * Return 0 on success and negative on error. */ int ice_vsi_ctrl_one_rx_ring(struct ice_vsi *vsi, bool ena, u16 rxq_idx, bool wait) { … } /** * ice_vsi_wait_one_rx_ring - wait for a VSI's Rx ring to be stopped/started * @vsi: the VSI being configured * @ena: true/false to verify Rx ring has been enabled/disabled respectively * @rxq_idx: 0-based Rx queue index for the VSI passed in * * This routine will wait for the given Rx queue of the VSI to reach the * enabled or disabled state. Returns -ETIMEDOUT in case of failing to reach * the requested state after multiple retries; else will return 0 in case of * success. */ int ice_vsi_wait_one_rx_ring(struct ice_vsi *vsi, bool ena, u16 rxq_idx) { … } /** * ice_vsi_alloc_q_vectors - Allocate memory for interrupt vectors * @vsi: the VSI being configured * * We allocate one q_vector per queue interrupt. If allocation fails we * return -ENOMEM. */ int ice_vsi_alloc_q_vectors(struct ice_vsi *vsi) { … } /** * ice_vsi_map_rings_to_vectors - Map VSI rings to interrupt vectors * @vsi: the VSI being configured * * This function maps descriptor rings to the queue-specific vectors allotted * through the MSI-X enabling code. On a constrained vector budget, we map Tx * and Rx rings to the vector as "efficiently" as possible. */ void ice_vsi_map_rings_to_vectors(struct ice_vsi *vsi) { … } /** * ice_vsi_free_q_vectors - Free memory allocated for interrupt vectors * @vsi: the VSI having memory freed */ void ice_vsi_free_q_vectors(struct ice_vsi *vsi) { … } /** * ice_vsi_cfg_txq - Configure single Tx queue * @vsi: the VSI that queue belongs to * @ring: Tx ring to be configured * @qg_buf: queue group buffer */ static int ice_vsi_cfg_txq(struct ice_vsi *vsi, struct ice_tx_ring *ring, struct ice_aqc_add_tx_qgrp *qg_buf) { … } int ice_vsi_cfg_single_txq(struct ice_vsi *vsi, struct ice_tx_ring **tx_rings, u16 q_idx) { … } /** * ice_vsi_cfg_txqs - Configure the VSI for Tx * @vsi: the VSI being configured * @rings: Tx ring array to be configured * @count: number of Tx ring array elements * * Return 0 on success and a negative value on error * Configure the Tx VSI for operation. */ static int ice_vsi_cfg_txqs(struct ice_vsi *vsi, struct ice_tx_ring **rings, u16 count) { … } /** * ice_vsi_cfg_lan_txqs - Configure the VSI for Tx * @vsi: the VSI being configured * * Return 0 on success and a negative value on error * Configure the Tx VSI for operation. */ int ice_vsi_cfg_lan_txqs(struct ice_vsi *vsi) { … } /** * ice_vsi_cfg_xdp_txqs - Configure Tx queues dedicated for XDP in given VSI * @vsi: the VSI being configured * * Return 0 on success and a negative value on error * Configure the Tx queues dedicated for XDP in given VSI for operation. */ int ice_vsi_cfg_xdp_txqs(struct ice_vsi *vsi) { … } /** * ice_cfg_itr - configure the initial interrupt throttle values * @hw: pointer to the HW structure * @q_vector: interrupt vector that's being configured * * Configure interrupt throttling values for the ring containers that are * associated with the interrupt vector passed in. */ void ice_cfg_itr(struct ice_hw *hw, struct ice_q_vector *q_vector) { … } /** * ice_cfg_txq_interrupt - configure interrupt on Tx queue * @vsi: the VSI being configured * @txq: Tx queue being mapped to MSI-X vector * @msix_idx: MSI-X vector index within the function * @itr_idx: ITR index of the interrupt cause * * Configure interrupt on Tx queue by associating Tx queue to MSI-X vector * within the function space. */ void ice_cfg_txq_interrupt(struct ice_vsi *vsi, u16 txq, u16 msix_idx, u16 itr_idx) { … } /** * ice_cfg_rxq_interrupt - configure interrupt on Rx queue * @vsi: the VSI being configured * @rxq: Rx queue being mapped to MSI-X vector * @msix_idx: MSI-X vector index within the function * @itr_idx: ITR index of the interrupt cause * * Configure interrupt on Rx queue by associating Rx queue to MSI-X vector * within the function space. */ void ice_cfg_rxq_interrupt(struct ice_vsi *vsi, u16 rxq, u16 msix_idx, u16 itr_idx) { … } /** * ice_trigger_sw_intr - trigger a software interrupt * @hw: pointer to the HW structure * @q_vector: interrupt vector to trigger the software interrupt for */ void ice_trigger_sw_intr(struct ice_hw *hw, const struct ice_q_vector *q_vector) { … } /** * ice_vsi_stop_tx_ring - Disable single Tx ring * @vsi: the VSI being configured * @rst_src: reset source * @rel_vmvf_num: Relative ID of VF/VM * @ring: Tx ring to be stopped * @txq_meta: Meta data of Tx ring to be stopped */ int ice_vsi_stop_tx_ring(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src, u16 rel_vmvf_num, struct ice_tx_ring *ring, struct ice_txq_meta *txq_meta) { … } /** * ice_fill_txq_meta - Prepare the Tx queue's meta data * @vsi: VSI that ring belongs to * @ring: ring that txq_meta will be based on * @txq_meta: a helper struct that wraps Tx queue's information * * Set up a helper struct that will contain all the necessary fields that * are needed for stopping Tx queue */ void ice_fill_txq_meta(const struct ice_vsi *vsi, struct ice_tx_ring *ring, struct ice_txq_meta *txq_meta) { … }
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