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| Current File : //compat/linux/proc/68247/root/compat/linux/proc/68247/root/sys/arm/xscale/i8134x/i81342_space.c |
/* $NetBSD: i80321_space.c,v 1.6 2003/10/06 15:43:35 thorpej 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 i81342 I/O Processor.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/arm/xscale/i8134x/i81342_space.c 171626 2007-07-27 14:50:57Z cognet $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <machine/pcb.h>
#include <vm/vm.h>
#include <vm/vm_kern.h>
#include <vm/pmap.h>
#include <vm/vm_page.h>
#include <vm/vm_extern.h>
#include <machine/bus.h>
#include <arm/xscale/i8134x/i81342reg.h>
#include <arm/xscale/i8134x/i81342var.h>
/* Prototypes for all the bus_space structure functions */
bs_protos(i81342);
bs_protos(i81342_io);
bs_protos(i81342_mem);
bs_protos(generic);
bs_protos(generic_armv4);
/*
* Template bus_space -- copied, and the bits that are NULL are
* filled in.
*/
const struct bus_space i81342_bs_tag_template = {
/* cookie */
(void *) 0,
/* mapping/unmapping */
NULL,
NULL,
i81342_bs_subregion,
/* allocation/deallocation */
NULL,
NULL,
/* barrier */
i81342_bs_barrier,
/* read (single) */
generic_bs_r_1,
generic_armv4_bs_r_2,
generic_bs_r_4,
NULL,
/* read multiple */
generic_bs_rm_1,
generic_armv4_bs_rm_2,
generic_bs_rm_4,
NULL,
/* read region */
generic_bs_rr_1,
generic_armv4_bs_rr_2,
generic_bs_rr_4,
NULL,
/* write (single) */
generic_bs_w_1,
generic_armv4_bs_w_2,
generic_bs_w_4,
NULL,
/* write multiple */
generic_bs_wm_1,
generic_armv4_bs_wm_2,
generic_bs_wm_4,
NULL,
/* write region */
NULL,
generic_armv4_bs_wr_2,
generic_bs_wr_4,
NULL,
/* set multiple */
NULL,
NULL,
NULL,
NULL,
/* set region */
NULL,
generic_armv4_bs_sr_2,
generic_bs_sr_4,
NULL,
/* copy */
NULL,
generic_armv4_bs_c_2,
NULL,
NULL,
/* read (single) stream */
generic_bs_r_1,
generic_armv4_bs_r_2,
generic_bs_r_4,
NULL,
/* read multiple stream */
generic_bs_rm_1,
generic_armv4_bs_rm_2,
generic_bs_rm_4,
NULL,
/* read region stream */
generic_bs_rr_1,
generic_armv4_bs_rr_2,
generic_bs_rr_4,
NULL,
/* write (single) stream */
generic_bs_w_1,
generic_armv4_bs_w_2,
generic_bs_w_4,
NULL,
/* write multiple stream */
generic_bs_wm_1,
generic_armv4_bs_wm_2,
generic_bs_wm_4,
NULL,
/* write region stream */
NULL,
generic_armv4_bs_wr_2,
generic_bs_wr_4,
NULL,
};
void
i81342_bs_init(bus_space_tag_t bs, void *cookie)
{
*bs = i81342_bs_tag_template;
bs->bs_cookie = cookie;
}
void
i81342_io_bs_init(bus_space_tag_t bs, void *cookie)
{
*bs = i81342_bs_tag_template;
bs->bs_cookie = cookie;
bs->bs_map = i81342_io_bs_map;
bs->bs_unmap = i81342_io_bs_unmap;
bs->bs_alloc = i81342_io_bs_alloc;
bs->bs_free = i81342_io_bs_free;
}
void
i81342_mem_bs_init(bus_space_tag_t bs, void *cookie)
{
*bs = i81342_bs_tag_template;
bs->bs_cookie = cookie;
bs->bs_map = i81342_mem_bs_map;
bs->bs_unmap = i81342_mem_bs_unmap;
bs->bs_alloc = i81342_mem_bs_alloc;
bs->bs_free = i81342_mem_bs_free;
}
/* *** Routines shared by i81342, PCI IO, and PCI MEM. *** */
int
i81342_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
i81342_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
bus_size_t len, int flags)
{
/* Nothing to do. */
}
/* *** Routines for PCI IO. *** */
int
i81342_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
bus_space_handle_t *bshp)
{
*bshp = bpa;
return (0);
}
void
i81342_io_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size)
{
/* Nothing to do. */
}
int
i81342_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("i81342_io_bs_alloc(): not implemented");
}
void
i81342_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
{
panic("i81342_io_bs_free(): not implemented");
}
/* *** Routines for PCI MEM. *** */
extern int badaddr_read(void *, int, void *);
static vm_offset_t allocable = 0xe1000000;
int
i81342_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
bus_space_handle_t *bshp)
{
struct i81342_pci_softc *sc = (struct i81342_pci_softc *)t;
struct i81342_pci_map *tmp;
vm_offset_t addr, endaddr;
vm_paddr_t paddr;
/* Lookup to see if we already have a mapping at this address. */
tmp = sc->sc_pci_mappings;
while (tmp) {
if (tmp->paddr <= bpa && tmp->paddr + tmp->size >
bpa + size) {
*bshp = bpa - tmp->paddr + tmp->vaddr;
return (0);
}
tmp = tmp->next;
}
addr = allocable;
endaddr = ((addr + size) &~ (0x1000000 - 1)) + 0x1000000;
if (endaddr >= IOP34X_VADDR)
panic("PCI virtual memory exhausted");
allocable = endaddr;
tmp = malloc(sizeof(*tmp), M_DEVBUF, M_WAITOK);
tmp->next = NULL;
paddr = bpa &~ (0x100000 - 1);
tmp->paddr = paddr;
tmp->vaddr = addr;
tmp->size = 0;
while (addr < endaddr) {
pmap_kenter_supersection(addr, paddr + (sc->sc_is_atux ?
IOP34X_PCIX_OMBAR : IOP34X_PCIE_OMBAR), 0);
addr += 0x1000000;
paddr += 0x1000000;
tmp->size += 0x1000000;
}
tmp->next = sc->sc_pci_mappings;
sc->sc_pci_mappings = tmp;
*bshp = bpa - tmp->paddr + tmp->vaddr;
return (0);
}
void
i81342_mem_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size)
{
#if 0
vm_offset_t va, endva;
va = trunc_page((vm_offset_t)t);
endva = va + round_page(size);
/* Free the kernel virtual mapping. */
kmem_free(kernel_map, va, endva - va);
#endif
}
int
i81342_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("i81342_mem_bs_alloc(): not implemented");
}
void
i81342_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
{
panic("i81342_mem_bs_free(): not implemented");
}