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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
108 lines
3.2 KiB
C
108 lines
3.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright © 2021-2023 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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#ifndef _DPAA2_IO_H
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#define _DPAA2_IO_H
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#include <sys/rman.h>
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#include <sys/bus.h>
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#include <sys/queue.h>
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#include "dpaa2_types.h"
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#include "dpaa2_mcp.h"
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#include "dpaa2_swp.h"
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/* Maximum resources per DPIO: 3 SYS_MEM + 1 DPMCP. */
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#define DPAA2_IO_MAX_RESOURCES 4
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/* Maximum number of MSIs supported by the DPIO objects. */
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#define DPAA2_IO_MSI_COUNT 1
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enum dpaa2_io_chan_mode {
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DPAA2_IO_NO_CHANNEL,
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DPAA2_IO_LOCAL_CHANNEL
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};
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/**
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* @brief Attributes of the DPIO object.
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*
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* swp_ce_paddr: Physical address of the cache-enabled area.
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* swp_ci_paddr: Physical address of the cache-inhibited area.
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* swp_version: Hardware IP version of the software portal.
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* swp_clk: QBMAN clock frequency value in Hz.
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* id: DPIO object ID.
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* swp_id: Software portal ID.
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* priors_num: Number of priorities for the notification channel (1-8);
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* relevant only if channel mode is "local channel".
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* chan_mode: Notification channel mode.
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*/
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struct dpaa2_io_attr {
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uint64_t swp_ce_paddr;
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uint64_t swp_ci_paddr;
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uint32_t swp_version;
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uint32_t swp_clk;
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uint32_t id;
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uint16_t swp_id;
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uint8_t priors_num;
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enum dpaa2_io_chan_mode chan_mode;
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};
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/**
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* @brief Context used by DPIO to configure data availability notifications
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* (CDAN) on a particular WQ channel.
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*/
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struct dpaa2_io_notif_ctx {
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device_t io_dev;
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void *channel;
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uint64_t qman_ctx;
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uint16_t fq_chan_id;
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bool cdan_en;
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};
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/**
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* @brief Software context for the DPAA2 I/O driver.
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*/
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struct dpaa2_io_softc {
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device_t dev;
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struct dpaa2_swp_desc swp_desc;
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struct dpaa2_swp *swp;
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struct dpaa2_io_attr attr;
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struct resource *res[DPAA2_IO_MAX_RESOURCES];
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struct resource_map map[DPAA2_IO_MAX_RESOURCES];
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int irq_rid[DPAA2_IO_MSI_COUNT];
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struct resource *irq_resource;
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void *intr; /* interrupt handle */
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int cpu;
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cpuset_t cpu_mask;
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};
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extern struct resource_spec dpaa2_io_spec[];
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#endif /* _DPAA2_IO_H */
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