NetBSD-5.0.2/sys/arch/arm/xscale/i80321_space.c
/* $NetBSD: i80321_space.c,v 1.11 2007/10/17 19:53:43 garbled 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.
*/
/*
* bus_space functions for i80321 I/O Processor.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: i80321_space.c,v 1.11 2007/10/17 19:53:43 garbled Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <uvm/uvm_extern.h>
#include <machine/bus.h>
#include <arm/xscale/i80321reg.h>
#include <arm/xscale/i80321var.h>
#include "opt_i80321.h"
/* Prototypes for all the bus_space structure functions */
bs_protos(i80321);
bs_protos(i80321_io);
bs_protos(i80321_mem);
bs_protos(generic);
bs_protos(generic_armv4);
bs_protos(bs_notimpl);
/*
* Template bus_space -- copied, and the bits that are NULL are
* filled in.
*/
const struct bus_space i80321_bs_tag_template = {
/* cookie */
(void *) 0,
/* mapping/unmapping */
NULL,
NULL,
i80321_bs_subregion,
/* allocation/deallocation */
NULL,
NULL,
/* get kernel virtual address */
i80321_bs_vaddr,
/* mmap */
i80321_bs_mmap,
/* barrier */
i80321_bs_barrier,
/* read (single) */
generic_bs_r_1,
generic_armv4_bs_r_2,
generic_bs_r_4,
bs_notimpl_bs_r_8,
/* read multiple */
generic_bs_rm_1,
generic_armv4_bs_rm_2,
generic_bs_rm_4,
bs_notimpl_bs_rm_8,
/* read region */
generic_bs_rr_1,
generic_armv4_bs_rr_2,
generic_bs_rr_4,
bs_notimpl_bs_rr_8,
/* write (single) */
generic_bs_w_1,
generic_armv4_bs_w_2,
generic_bs_w_4,
bs_notimpl_bs_w_8,
/* write multiple */
generic_bs_wm_1,
generic_armv4_bs_wm_2,
generic_bs_wm_4,
bs_notimpl_bs_wm_8,
/* write region */
generic_bs_wr_1,
generic_armv4_bs_wr_2,
generic_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 */
bs_notimpl_bs_sr_1,
generic_armv4_bs_sr_2,
generic_bs_sr_4,
bs_notimpl_bs_sr_8,
/* copy */
bs_notimpl_bs_c_1,
generic_armv4_bs_c_2,
bs_notimpl_bs_c_4,
bs_notimpl_bs_c_8,
};
void
i80321_bs_init(bus_space_tag_t bs, void *cookie)
{
*bs = i80321_bs_tag_template;
bs->bs_cookie = cookie;
}
void
i80321_io_bs_init(bus_space_tag_t bs, void *cookie)
{
*bs = i80321_bs_tag_template;
bs->bs_cookie = cookie;
bs->bs_map = i80321_io_bs_map;
bs->bs_unmap = i80321_io_bs_unmap;
bs->bs_alloc = i80321_io_bs_alloc;
bs->bs_free = i80321_io_bs_free;
bs->bs_vaddr = i80321_io_bs_vaddr;
}
void
i80321_mem_bs_init(bus_space_tag_t bs, void *cookie)
{
*bs = i80321_bs_tag_template;
bs->bs_cookie = cookie;
bs->bs_map = i80321_mem_bs_map;
bs->bs_unmap = i80321_mem_bs_unmap;
bs->bs_alloc = i80321_mem_bs_alloc;
bs->bs_free = i80321_mem_bs_free;
bs->bs_mmap = i80321_mem_bs_mmap;
}
/* *** Routines shared by i80321, PCI IO, and PCI MEM. *** */
int
i80321_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
i80321_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
bus_size_t len, int flags)
{
/* Nothing to do. */
}
void *
i80321_bs_vaddr(void *t, bus_space_handle_t bsh)
{
return ((void *)bsh);
}
paddr_t
i80321_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags)
{
/* Not supported. */
return (-1);
}
/* *** Routines for PCI IO. *** */
int
i80321_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
bus_space_handle_t *bshp)
{
struct i80321_softc *sc = t;
vaddr_t winvaddr;
uint32_t busbase;
if (bpa >= sc->sc_ioout_xlate &&
bpa < (sc->sc_ioout_xlate + VERDE_OUT_XLATE_IO_WIN_SIZE)) {
busbase = sc->sc_ioout_xlate;
winvaddr = sc->sc_iow_vaddr;
} else
return (EINVAL);
if ((bpa + size) >= (busbase + VERDE_OUT_XLATE_IO_WIN_SIZE))
return (EINVAL);
/*
* Found the window -- PCI I/O space is mapped at a fixed
* virtual address by board-specific code. Translate the
* bus address to the virtual address.
*/
*bshp = winvaddr + (bpa - busbase);
return (0);
}
void
i80321_io_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
{
/* Nothing to do. */
}
int
i80321_io_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("i80321_io_bs_alloc(): not implemented");
}
void
i80321_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
{
panic("i80321_io_bs_free(): not implemented");
}
void *
i80321_io_bs_vaddr(void *t, bus_space_handle_t bsh)
{
/* Not supported. */
return (NULL);
}
/* *** Routines for PCI MEM. *** */
int
i80321_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
bus_space_handle_t *bshp)
{
#ifndef I80321_USE_DIRECT_WIN
struct i80321_softc *sc = t;
#endif
vaddr_t va;
uint32_t busbase;
paddr_t pa, endpa, physbase;
#ifdef I80321_USE_DIRECT_WIN
if (bpa >= (VERDE_OUT_DIRECT_WIN_BASE) &&
bpa < (VERDE_OUT_DIRECT_WIN_BASE + VERDE_OUT_DIRECT_WIN_SIZE)) {
busbase = VERDE_OUT_DIRECT_WIN_BASE;
physbase = VERDE_OUT_DIRECT_WIN_BASE;
} else
return (EINVAL);
if ((bpa + size) >= (VERDE_OUT_DIRECT_WIN_BASE +
VERDE_OUT_DIRECT_WIN_SIZE))
return (EINVAL);
#else
if (bpa >= sc->sc_owin[0].owin_xlate_lo &&
bpa < (sc->sc_owin[0].owin_xlate_lo +
VERDE_OUT_XLATE_MEM_WIN_SIZE)) {
busbase = sc->sc_owin[0].owin_xlate_lo;
physbase = sc->sc_iwin[1].iwin_xlate;
} else
return (EINVAL);
if ((bpa + size) >= (busbase + VERDE_OUT_XLATE_MEM_WIN_SIZE))
return (EINVAL);
#endif
/*
* Found the window -- PCI MEM space is not mapped by allocating
* some kernel VA space and mapping the pages with pmap_enter().
* pmap_enter() will map unmanaged pages as non-cacheable.
*/
pa = trunc_page((bpa - busbase) + physbase);
endpa = round_page(((bpa - busbase) + physbase) + size);
va = uvm_km_alloc(kernel_map, endpa - pa, 0,
UVM_KMF_VAONLY | UVM_KMF_NOWAIT);
if (va == 0)
return (ENOMEM);
*bshp = va + (bpa & PAGE_MASK);
for (; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) {
pmap_enter(pmap_kernel(), va, pa,
VM_PROT_READ | VM_PROT_WRITE,
VM_PROT_READ | VM_PROT_WRITE | PMAP_WIRED);
}
pmap_update(pmap_kernel());
return (0);
}
void
i80321_mem_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
{
vaddr_t va, endva;
va = trunc_page(bsh);
endva = round_page(bsh + size);
pmap_remove(pmap_kernel(), va, endva - va);
pmap_update(pmap_kernel());
/* Free the kernel virtual mapping. */
uvm_km_free(kernel_map, va, endva - va, UVM_KMF_VAONLY);
}
int
i80321_mem_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("i80321_mem_bs_alloc(): not implemented");
}
void
i80321_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
{
panic("i80321_mem_bs_free(): not implemented");
}
paddr_t
i80321_mem_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags)
{
/* XXX */
return (-1);
}