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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
* Copyright (c) 2016 by Delphix. All rights reserved.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/kmem.h>
#include <sys/systm.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include <sys/sunndi.h>
#include <sys/ddidmareq.h>
#include <sys/ddi_impldefs.h>
#include <sys/ndi_impldefs.h>
#include <sys/fcode.h>
/*
* We want to call the attachment point's dma ctl op, not its parent's
* dma ctl op, so we have to code this ourselves.
*/
int
fc_ddi_dma_alloc_handle(dev_info_t *dip, ddi_dma_attr_t *attr,
int (*waitfp)(caddr_t), caddr_t arg, ddi_dma_handle_t *handlep)
{
int (*funcp)(dev_info_t *, dev_info_t *, ddi_dma_attr_t *,
int (*)(caddr_t), caddr_t, ddi_dma_handle_t *);
funcp = DEVI(dip)->devi_ops->devo_bus_ops->bus_dma_allochdl;
return ((*funcp)(dip, dip, attr, waitfp, arg, handlep));
}
int
fc_ddi_dma_buf_bind_handle(ddi_dma_handle_t handle, struct buf *bp,
uint_t flags, int (*waitfp)(caddr_t), caddr_t arg,
ddi_dma_cookie_t *cookiep, uint_t *ccountp)
{
struct ddi_dma_req dmareq;
ddi_dma_impl_t *hp;
dev_info_t *dip;
int (*funcp)(dev_info_t *, dev_info_t *, ddi_dma_handle_t,
struct ddi_dma_req *, ddi_dma_cookie_t *, uint_t *);
hp = (ddi_dma_impl_t *)handle;
dip = hp->dmai_rdip;
dmareq.dmar_flags = flags;
dmareq.dmar_fp = waitfp;
dmareq.dmar_arg = arg;
dmareq.dmar_object.dmao_size = (uint_t)bp->b_bcount;
if ((bp->b_flags & (B_PAGEIO|B_REMAPPED)) == B_PAGEIO) {
dmareq.dmar_object.dmao_type = DMA_OTYP_PAGES;
dmareq.dmar_object.dmao_obj.pp_obj.pp_pp = bp->b_pages;
dmareq.dmar_object.dmao_obj.pp_obj.pp_offset =
(uint_t)(((uintptr_t)bp->b_un.b_addr) & MMU_PAGEOFFSET);
} else {
dmareq.dmar_object.dmao_obj.virt_obj.v_addr = bp->b_un.b_addr;
if ((bp->b_flags & (B_SHADOW|B_REMAPPED)) == B_SHADOW) {
dmareq.dmar_object.dmao_obj.virt_obj.v_priv =
bp->b_shadow;
dmareq.dmar_object.dmao_type = DMA_OTYP_BUFVADDR;
} else {
dmareq.dmar_object.dmao_type =
(bp->b_flags & (B_PHYS | B_REMAPPED))?
DMA_OTYP_BUFVADDR : DMA_OTYP_VADDR;
dmareq.dmar_object.dmao_obj.virt_obj.v_priv = NULL;
}
/*
* If the buffer has no proc pointer, or the proc
* struct has the kernel address space, or the buffer has
* been marked B_REMAPPED (meaning that it is now
* mapped into the kernel's address space), then
* the address space is kas (kernel address space).
*/
if (bp->b_proc == NULL || bp->b_proc->p_as == &kas ||
(bp->b_flags & B_REMAPPED) != 0) {
dmareq.dmar_object.dmao_obj.virt_obj.v_as = 0;
} else {
dmareq.dmar_object.dmao_obj.virt_obj.v_as =
bp->b_proc->p_as;
}
}
funcp = DEVI(dip)->devi_ops->devo_bus_ops->bus_dma_bindhdl;
return ((*funcp)(dip, dip, handle, &dmareq, cookiep, ccountp));
}
int
fc_ddi_dma_unbind_handle(ddi_dma_handle_t handle)
{
int (*funcp)(dev_info_t *, dev_info_t *, ddi_dma_handle_t);
ddi_dma_impl_t *hp;
dev_info_t *dip;
hp = (ddi_dma_impl_t *)handle;
dip = hp->dmai_rdip;
funcp = DEVI(dip)->devi_ops->devo_bus_ops->bus_dma_unbindhdl;
return ((*funcp)(dip, dip, handle));
}
void
fc_ddi_dma_free_handle(ddi_dma_handle_t *handlep)
{
int (*funcp)(dev_info_t *, dev_info_t *, ddi_dma_handle_t);
ddi_dma_impl_t *hp;
dev_info_t *dip;
hp = (ddi_dma_impl_t *)*handlep;
dip = hp->dmai_rdip;
funcp = DEVI(dip)->devi_ops->devo_bus_ops->bus_dma_freehdl;
(void) (*funcp)(dip, dip, *handlep);
}
int
fc_ddi_dma_sync(ddi_dma_handle_t h, off_t o, size_t l, uint_t whom)
{
ddi_dma_impl_t *hp = (ddi_dma_impl_t *)h;
dev_info_t *dip;
int (*funcp)(dev_info_t *, dev_info_t *, ddi_dma_handle_t, off_t,
size_t, uint_t);
/*
* the DMA nexus driver will set DMP_NOSYNC if the
* platform does not require any sync operation. For
* example if the memory is uncached or consistent
* and without any I/O write buffers involved.
*/
if ((hp->dmai_rflags & DMP_NOSYNC) == DMP_NOSYNC)
return (DDI_SUCCESS);
dip = hp->dmai_rdip;
funcp = DEVI(dip)->devi_ops->devo_bus_ops->bus_dma_flush;
return ((*funcp)(dip, dip, h, o, l, whom));
}
/*
* Create untyped properties, just like 1275 properties.
* XXX: Assumes property encoding is the natural byte order.
*/
int
fc_ndi_prop_update(dev_t match_dev, dev_info_t *dip,
char *name, uchar_t *data, uint_t nelements)
{
return (ddi_prop_update_common(match_dev, dip,
DDI_PROP_HW_DEF | DDI_PROP_TYPE_ANY,
name, data, nelements, ddi_prop_fm_encode_bytes));
}
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