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/* $OpenBSD: armv7_space.c,v 1.6 2014/11/16 12:30:56 deraadt Exp $ */
/*
* Copyright (c) 2001, 2002 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*/
/*
* Copyright (c) 1997 Mark Brinicombe.
* Copyright (c) 1997 Causality Limited.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Ichiro FUKUHARA.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Mark Brinicombe.
* 4. The name of the company nor the name of the author may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* 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 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.
*/
/*
* bus_space functions for Intel PXA2[51]0 application processor.
* Derived from i80321_space.c.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <uvm/uvm_extern.h>
#include <machine/bus.h>
/* Prototypes for all the bus_space structure functions */
bs_protos(armv7);
bs_protos(generic);
bs_protos(bs_notimpl);
struct bus_space armv7_bs_tag = {
/* cookie */
(void *) 0,
/* mapping/unmapping */
armv7_bs_map,
armv7_bs_unmap,
armv7_bs_subregion,
/* allocation/deallocation */
armv7_bs_alloc, /* not implemented */
armv7_bs_free, /* not implemented */
/* get kernel virtual address */
armv7_bs_vaddr,
/* mmap */
bs_notimpl_bs_mmap,
/* barrier */
armv7_bs_barrier,
/* read (single) */
armv7_bs_r_1,
armv7_bs_r_2,
armv7_bs_r_4,
bs_notimpl_bs_r_8,
/* read multiple */
armv7_bs_rm_1,
armv7_bs_rm_2,
armv7_bs_rm_4,
bs_notimpl_bs_rm_8,
/* read region */
armv7_bs_rr_1,
armv7_bs_rr_2,
armv7_bs_rr_4,
bs_notimpl_bs_rr_8,
/* write (single) */
armv7_bs_w_1,
armv7_bs_w_2,
armv7_bs_w_4,
bs_notimpl_bs_w_8,
/* write multiple */
armv7_bs_wm_1,
armv7_bs_wm_2,
armv7_bs_wm_4,
bs_notimpl_bs_wm_8,
/* write region */
armv7_bs_wr_1,
armv7_bs_wr_2,
armv7_bs_wr_4,
bs_notimpl_bs_wr_8,
/* set multiple */
bs_notimpl_bs_sm_1,
bs_notimpl_bs_sm_2,
bs_notimpl_bs_sm_4,
bs_notimpl_bs_sm_8,
/* set region */
armv7_bs_sr_1,
armv7_bs_sr_2,
armv7_bs_sr_4,
bs_notimpl_bs_sr_8,
/* copy */
bs_notimpl_bs_c_1,
armv7_bs_c_2,
bs_notimpl_bs_c_4,
bs_notimpl_bs_c_8,
};
int
armv7_bs_map(void *t, bus_addr_t bpa, bus_size_t size,
int flag, bus_space_handle_t *bshp)
{
u_long startpa, endpa, pa;
vaddr_t va;
pt_entry_t *pte;
if ((u_long)bpa > (u_long)KERNEL_BASE) {
/* Some IO registers (ex. UART ports for console)
are mapped to fixed address by board specific
routine. */
*bshp = bpa;
return(0);
}
startpa = trunc_page(bpa);
endpa = round_page(bpa + size);
/* XXX use extent manager to check duplicate mapping */
va = uvm_km_valloc(kernel_map, endpa - startpa);
if (! va)
return(ENOMEM);
*bshp = (bus_space_handle_t)(va + (bpa - startpa));
for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) {
pmap_kenter_pa(va, pa, PROT_READ | PROT_WRITE);
if ((flag & BUS_SPACE_MAP_CACHEABLE) == 0) {
pte = vtopte(va);
*pte &= ~L2_S_CACHE_MASK;
*pte |= L2_B;
PTE_SYNC(pte);
/* XXX: pmap_kenter_pa() also does PTE_SYNC(). a bit of
* waste.
*/
}
}
pmap_update(pmap_kernel());
return(0);
}
void
armv7_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
{
vaddr_t va, endva;
if (bsh > (u_long)KERNEL_BASE)
return;
va = trunc_page((vaddr_t)bsh);
endva = round_page((vaddr_t)bsh + size);
pmap_kremove(va, endva - va);
pmap_update(pmap_kernel());
uvm_km_free(kernel_map, bsh, size);
}
int
armv7_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
bus_size_t size, bus_space_handle_t *nbshp)
{
*nbshp = bsh + offset;
return (0);
}
void
armv7_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
bus_size_t len, int flags)
{
cpu_drain_writebuf();
}
void *
armv7_bs_vaddr(void *t, bus_space_handle_t bsh)
{
return ((void *)bsh);
}
int
armv7_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
bus_addr_t *bpap, bus_space_handle_t *bshp)
{
panic("armv7_io_bs_alloc(): not implemented");
}
void
armv7_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
{
panic("armv7_io_bs_free(): not implemented");
}
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