58983e4b02
Each channel gets its own DMA resources, cleanup and "bufferpool" tasks, and a separate cleanup taskqueue to isolate channels operation as much as possible to avoid various kernel panics under heavy network load. As a side-effect of this work, dpaa2_buf structure is simplified and all of the functions to re-seed those buffers are gathered now in dpaa2_buf.h and .c files; functions to work with channels are extracted into dpaa2_channel.h and .c files as well. Reported by: dch Reviewed by: bz Approved by: bz (mentor) MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D41296
115 lines
3.2 KiB
C
115 lines
3.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright © 2023 Dmitry Salychev
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <machine/bus.h>
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#include "dpaa2_types.h"
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#define COMPARE_TYPE(t, v) (strncmp((v), (t), strlen((v))) == 0)
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/**
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* @brief Convert DPAA2 device type to string.
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*/
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const char *
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dpaa2_ttos(enum dpaa2_dev_type type)
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{
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switch (type) {
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case DPAA2_DEV_MC:
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return ("mc"); /* NOTE: to print as information only. */
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case DPAA2_DEV_RC:
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return ("dprc");
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case DPAA2_DEV_IO:
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return ("dpio");
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case DPAA2_DEV_NI:
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return ("dpni");
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case DPAA2_DEV_MCP:
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return ("dpmcp");
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case DPAA2_DEV_BP:
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return ("dpbp");
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case DPAA2_DEV_CON:
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return ("dpcon");
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case DPAA2_DEV_MAC:
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return ("dpmac");
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case DPAA2_DEV_MUX:
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return ("dpdmux");
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case DPAA2_DEV_SW:
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return ("dpsw");
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default:
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break;
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}
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return ("notype");
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}
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/**
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* @brief Convert string to DPAA2 device type.
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*/
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enum dpaa2_dev_type
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dpaa2_stot(const char *str)
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{
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if (COMPARE_TYPE(str, "dprc")) {
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return (DPAA2_DEV_RC);
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} else if (COMPARE_TYPE(str, "dpio")) {
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return (DPAA2_DEV_IO);
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} else if (COMPARE_TYPE(str, "dpni")) {
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return (DPAA2_DEV_NI);
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} else if (COMPARE_TYPE(str, "dpmcp")) {
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return (DPAA2_DEV_MCP);
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} else if (COMPARE_TYPE(str, "dpbp")) {
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return (DPAA2_DEV_BP);
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} else if (COMPARE_TYPE(str, "dpcon")) {
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return (DPAA2_DEV_CON);
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} else if (COMPARE_TYPE(str, "dpmac")) {
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return (DPAA2_DEV_MAC);
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} else if (COMPARE_TYPE(str, "dpdmux")) {
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return (DPAA2_DEV_MUX);
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} else if (COMPARE_TYPE(str, "dpsw")) {
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return (DPAA2_DEV_SW);
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}
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return (DPAA2_DEV_NOTYPE);
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}
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/**
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* @brief Callback to obtain a physical address of the only DMA segment mapped.
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*/
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void
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dpaa2_dmamap_oneseg_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
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{
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if (error == 0) {
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KASSERT(nseg == 1, ("%s: too many segments: nseg=%d\n",
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__func__, nseg));
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*(bus_addr_t *)arg = segs[0].ds_addr;
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} else {
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panic("%s: error=%d\n", __func__, error);
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}
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}
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