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controller
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xdma.c
(12.12 KB)
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xdma.h
(9.13 KB)
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xdma_bank.c
(2.78 KB)
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xdma_bio.c
(3 KB)
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xdma_fdt_test.c
(10.01 KB)
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xdma_if.m
(3.28 KB)
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xdma_iommu.c
(4.16 KB)
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xdma_mbuf.c
(3.67 KB)
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xdma_queue.c
(3.33 KB)
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xdma_sg.c
(14.96 KB)
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xdma_sglist.c
(2.85 KB)
Editing: xdma_bio.c
/*- * Copyright (c) 2017-2019 Ruslan Bukin <br@bsdpad.com> * All rights reserved. * * This software was developed by SRI International and the University of * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237 * ("CTSRD"), as part of the DARPA CRASH research programme. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include "opt_platform.h" #include <sys/param.h> #include <sys/conf.h> #include <sys/bus.h> #include <sys/kernel.h> #include <sys/lock.h> #include <sys/malloc.h> #include <sys/mutex.h> #include <machine/bus.h> #include <dev/xdma/xdma.h> int xdma_dequeue_bio(xdma_channel_t *xchan, struct bio **bp, xdma_transfer_status_t *status) { struct xdma_request *xr_tmp; struct xdma_request *xr; QUEUE_OUT_LOCK(xchan); TAILQ_FOREACH_SAFE(xr, &xchan->queue_out, xr_next, xr_tmp) { TAILQ_REMOVE(&xchan->queue_out, xr, xr_next); break; } QUEUE_OUT_UNLOCK(xchan); if (xr == NULL) return (-1); *bp = xr->bp; status->error = xr->status.error; status->transferred = xr->status.transferred; xchan_bank_put(xchan, xr); return (0); } int xdma_enqueue_bio(xdma_channel_t *xchan, struct bio **bp, bus_addr_t addr, uint8_t src_width, uint8_t dst_width, enum xdma_direction dir) { struct xdma_request *xr; xdma_controller_t *xdma; xdma = xchan->xdma; xr = xchan_bank_get(xchan); if (xr == NULL) return (-1); /* No space is available yet. */ xr->direction = dir; xr->bp = *bp; xr->req_type = XR_TYPE_BIO; xr->src_width = src_width; xr->dst_width = dst_width; if (dir == XDMA_MEM_TO_DEV) { xr->dst_addr = addr; xr->src_addr = 0; } else { xr->dst_addr = 0; xr->src_addr = addr; } QUEUE_IN_LOCK(xchan); TAILQ_INSERT_TAIL(&xchan->queue_in, xr, xr_next); QUEUE_IN_UNLOCK(xchan); return (0); }
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