/*
* Copyright (c) 1999 Matthew R. Green
* All rights reserved.
*
* 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 ``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 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.
*/
/*
* Streaming buffer control
*
* It's easy to deal w/sysio since it has a single streaming buffer, and
* flushes are done on 8-byte boundaries. But psycho is a pain since it
* has two streaming buffers and the streaming buffer flush dumps 64 bytes
* of data.
*/
struct strbuf_ctl {
struct iommu_state *sb_is; /* Pointer to our iommu */
bus_space_handle_t sb_sb; /* Handle for our regs */
paddr_t sb_flushpa; /* to flush streaming buffers */
volatile int64_t *sb_flush;
};
/*
* per-IOMMU state
*/
struct iommu_state {
paddr_t is_ptsb; /* TSB physical address */
int64_t *is_tsb; /* TSB virtual address */
int is_tsbsize; /* 0 = 8K, ... */
u_int is_dvmabase;
u_int is_dvmaend;
int64_t is_cr; /* IOMMU control register value */
vmem_t *is_dvmamap; /* DVMA map for this instance */
int is_flags;
#define IOMMU_FLUSH_CACHE 0x00000001
#define IOMMU_TSBSIZE_IN_PTSB 0x00000002 /* PCIe */
#define IOMMU_SYNC_BEFORE_UNMAP 0x00000004
struct strbuf_ctl *is_sb[2]; /* Streaming buffers if any */
/* copies of our parents state, to allow us to be self contained */
bus_space_tag_t is_bustag; /* our bus tag */
bus_space_handle_t is_iommu; /* IOMMU registers */
uint64_t is_devhandle; /* for sun4v hypervisor calls */
};
