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| Current File : //usr/src/sys/arm/xscale/ixp425/ixp425_pci_space.c |
/* $NetBSD: ixp425_pci_space.c,v 1.6 2006/04/10 03:36:03 simonb Exp $ */
/*
* Copyright (c) 2003
* Ichiro FUKUHARA <ichiro@ichiro.org>.
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Ichiro FUKUHARA.
* 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 ICHIRO FUKUHARA ``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 ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/arm/xscale/ixp425/ixp425_pci_space.c 164426 2006-11-19 23:55:23Z sam $");
/*
* bus_space PCI functions for ixp425
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/endian.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/ixp425/ixp425reg.h>
#include <arm/xscale/ixp425/ixp425var.h>
/*
* Macros to read/write registers
*/
#define CSR_READ_4(x) *(volatile uint32_t *) \
(IXP425_PCI_CSR_BASE + (x))
#define CSR_WRITE_4(x, v) *(volatile uint32_t *) \
(IXP425_PCI_CSR_BASE + (x)) = (v)
/* Proto types for all the bus_space structure functions */
bs_protos(ixp425_pci);
bs_protos(ixp425_pci_io);
bs_protos(ixp425_pci_mem);
/* special I/O functions */
static u_int8_t _pci_io_bs_r_1(void *, bus_space_handle_t, bus_size_t);
static u_int16_t _pci_io_bs_r_2(void *, bus_space_handle_t, bus_size_t);
static u_int32_t _pci_io_bs_r_4(void *, bus_space_handle_t, bus_size_t);
static void _pci_io_bs_w_1(void *, bus_space_handle_t, bus_size_t, u_int8_t);
static void _pci_io_bs_w_2(void *, bus_space_handle_t, bus_size_t, u_int16_t);
static void _pci_io_bs_w_4(void *, bus_space_handle_t, bus_size_t, u_int32_t);
#ifdef __ARMEB__
static u_int8_t _pci_io_bs_r_1_s(void *, bus_space_handle_t, bus_size_t);
static u_int16_t _pci_io_bs_r_2_s(void *, bus_space_handle_t, bus_size_t);
static u_int32_t _pci_io_bs_r_4_s(void *, bus_space_handle_t, bus_size_t);
static void _pci_io_bs_w_1_s(void *, bus_space_handle_t, bus_size_t, u_int8_t);
static void _pci_io_bs_w_2_s(void *, bus_space_handle_t, bus_size_t, u_int16_t);
static void _pci_io_bs_w_4_s(void *, bus_space_handle_t, bus_size_t, u_int32_t);
static u_int8_t _pci_mem_bs_r_1(void *, bus_space_handle_t, bus_size_t);
static u_int16_t _pci_mem_bs_r_2(void *, bus_space_handle_t, bus_size_t);
static u_int32_t _pci_mem_bs_r_4(void *, bus_space_handle_t, bus_size_t);
static void _pci_mem_bs_w_1(void *, bus_space_handle_t, bus_size_t, u_int8_t);
static void _pci_mem_bs_w_2(void *, bus_space_handle_t, bus_size_t, u_int16_t);
static void _pci_mem_bs_w_4(void *, bus_space_handle_t, bus_size_t, u_int32_t);
#endif
struct bus_space ixp425_pci_io_bs_tag_template = {
/* mapping/unmapping */
.bs_map = ixp425_pci_io_bs_map,
.bs_unmap = ixp425_pci_io_bs_unmap,
.bs_subregion = ixp425_pci_bs_subregion,
.bs_alloc = ixp425_pci_io_bs_alloc,
.bs_free = ixp425_pci_io_bs_free,
/* barrier */
.bs_barrier = ixp425_pci_bs_barrier,
/*
* IXP425 processor does not have PCI I/O windows
*/
/* read (single) */
.bs_r_1 = _pci_io_bs_r_1,
.bs_r_2 = _pci_io_bs_r_2,
.bs_r_4 = _pci_io_bs_r_4,
/* write (single) */
.bs_w_1 = _pci_io_bs_w_1,
.bs_w_2 = _pci_io_bs_w_2,
.bs_w_4 = _pci_io_bs_w_4,
#ifdef __ARMEB__
.bs_r_1_s = _pci_io_bs_r_1_s,
.bs_r_2_s = _pci_io_bs_r_2_s,
.bs_r_4_s = _pci_io_bs_r_4_s,
.bs_w_1_s = _pci_io_bs_w_1_s,
.bs_w_2_s = _pci_io_bs_w_2_s,
.bs_w_4_s = _pci_io_bs_w_4_s,
#else
.bs_r_1_s = _pci_io_bs_r_1,
.bs_r_2_s = _pci_io_bs_r_2,
.bs_r_4_s = _pci_io_bs_r_4,
.bs_w_1_s = _pci_io_bs_w_1,
.bs_w_2_s = _pci_io_bs_w_2,
.bs_w_4_s = _pci_io_bs_w_4,
#endif
};
void
ixp425_io_bs_init(bus_space_tag_t bs, void *cookie)
{
*bs = ixp425_pci_io_bs_tag_template;
bs->bs_cookie = cookie;
}
struct bus_space ixp425_pci_mem_bs_tag_template = {
/* mapping/unmapping */
.bs_map = ixp425_pci_mem_bs_map,
.bs_unmap = ixp425_pci_mem_bs_unmap,
.bs_subregion = ixp425_pci_bs_subregion,
.bs_alloc = ixp425_pci_mem_bs_alloc,
.bs_free = ixp425_pci_mem_bs_free,
/* barrier */
.bs_barrier = ixp425_pci_bs_barrier,
#ifdef __ARMEB__
/* read (single) */
.bs_r_1_s = _pci_mem_bs_r_1,
.bs_r_2_s = _pci_mem_bs_r_2,
.bs_r_4_s = _pci_mem_bs_r_4,
.bs_r_1 = ixp425_pci_mem_bs_r_1,
.bs_r_2 = ixp425_pci_mem_bs_r_2,
.bs_r_4 = ixp425_pci_mem_bs_r_4,
/* write (single) */
.bs_w_1_s = _pci_mem_bs_w_1,
.bs_w_2_s = _pci_mem_bs_w_2,
.bs_w_4_s = _pci_mem_bs_w_4,
.bs_w_1 = ixp425_pci_mem_bs_w_1,
.bs_w_2 = ixp425_pci_mem_bs_w_2,
.bs_w_4 = ixp425_pci_mem_bs_w_4,
#else
/* read (single) */
.bs_r_1 = ixp425_pci_mem_bs_r_1,
.bs_r_2 = ixp425_pci_mem_bs_r_2,
.bs_r_4 = ixp425_pci_mem_bs_r_4,
.bs_r_1_s = ixp425_pci_mem_bs_r_1,
.bs_r_2_s = ixp425_pci_mem_bs_r_2,
.bs_r_4_s = ixp425_pci_mem_bs_r_4,
/* write (single) */
.bs_w_1 = ixp425_pci_mem_bs_w_1,
.bs_w_2 = ixp425_pci_mem_bs_w_2,
.bs_w_4 = ixp425_pci_mem_bs_w_4,
.bs_w_1_s = ixp425_pci_mem_bs_w_1,
.bs_w_2_s = ixp425_pci_mem_bs_w_2,
.bs_w_4_s = ixp425_pci_mem_bs_w_4,
#endif
};
void
ixp425_mem_bs_init(bus_space_tag_t bs, void *cookie)
{
*bs = ixp425_pci_mem_bs_tag_template;
bs->bs_cookie = cookie;
}
/* common routine */
int
ixp425_pci_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
ixp425_pci_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
bus_size_t len, int flags)
{
/* NULL */
}
/* io bs */
int
ixp425_pci_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size,
int cacheable, bus_space_handle_t *bshp)
{
*bshp = bpa;
return (0);
}
void
ixp425_pci_io_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size)
{
/* Nothing to do. */
}
int
ixp425_pci_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 cacheable,
bus_addr_t *bpap, bus_space_handle_t *bshp)
{
panic("ixp425_pci_io_bs_alloc(): not implemented\n");
}
void
ixp425_pci_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
{
panic("ixp425_pci_io_bs_free(): not implemented\n");
}
/* special I/O functions */
static __inline u_int32_t
_bs_r(void *v, bus_space_handle_t ioh, bus_size_t off, u_int32_t be)
{
u_int32_t data;
CSR_WRITE_4(PCI_NP_AD, (ioh + off) & ~3);
CSR_WRITE_4(PCI_NP_CBE, be | COMMAND_NP_IO_READ);
data = CSR_READ_4(PCI_NP_RDATA);
if (CSR_READ_4(PCI_ISR) & ISR_PFE)
CSR_WRITE_4(PCI_ISR, ISR_PFE);
return data;
}
static u_int8_t
_pci_io_bs_r_1(void *v, bus_space_handle_t ioh, bus_size_t off)
{
u_int32_t data, n, be;
n = (ioh + off) % 4;
be = (0xf & ~(1U << n)) << NP_CBE_SHIFT;
data = _bs_r(v, ioh, off, be);
return data >> (8 * n);
}
static u_int16_t
_pci_io_bs_r_2(void *v, bus_space_handle_t ioh, bus_size_t off)
{
u_int32_t data, n, be;
n = (ioh + off) % 4;
be = (0xf & ~((1U << n) | (1U << (n + 1)))) << NP_CBE_SHIFT;
data = _bs_r(v, ioh, off, be);
return data >> (8 * n);
}
static u_int32_t
_pci_io_bs_r_4(void *v, bus_space_handle_t ioh, bus_size_t off)
{
u_int32_t data;
data = _bs_r(v, ioh, off, 0);
return data;
}
#ifdef __ARMEB__
static u_int8_t
_pci_io_bs_r_1_s(void *v, bus_space_handle_t ioh, bus_size_t off)
{
u_int32_t data, n, be;
n = (ioh + off) % 4;
be = (0xf & ~(1U << n)) << NP_CBE_SHIFT;
data = _bs_r(v, ioh, off, be);
return data >> (8 * n);
}
static u_int16_t
_pci_io_bs_r_2_s(void *v, bus_space_handle_t ioh, bus_size_t off)
{
u_int32_t data, n, be;
n = (ioh + off) % 4;
be = (0xf & ~((1U << n) | (1U << (n + 1)))) << NP_CBE_SHIFT;
data = _bs_r(v, ioh, off, be);
return data >> (8 * n);
}
static u_int32_t
_pci_io_bs_r_4_s(void *v, bus_space_handle_t ioh, bus_size_t off)
{
u_int32_t data;
data = _bs_r(v, ioh, off, 0);
return le32toh(data);
}
#endif /* __ARMEB__ */
static __inline void
_bs_w(void *v, bus_space_handle_t ioh, bus_size_t off,
u_int32_t be, u_int32_t data)
{
CSR_WRITE_4(PCI_NP_AD, (ioh + off) & ~3);
CSR_WRITE_4(PCI_NP_CBE, be | COMMAND_NP_IO_WRITE);
CSR_WRITE_4(PCI_NP_WDATA, data);
if (CSR_READ_4(PCI_ISR) & ISR_PFE)
CSR_WRITE_4(PCI_ISR, ISR_PFE);
}
static void
_pci_io_bs_w_1(void *v, bus_space_handle_t ioh, bus_size_t off,
u_int8_t val)
{
u_int32_t data, n, be;
n = (ioh + off) % 4;
be = (0xf & ~(1U << n)) << NP_CBE_SHIFT;
data = val << (8 * n);
_bs_w(v, ioh, off, be, data);
}
static void
_pci_io_bs_w_2(void *v, bus_space_handle_t ioh, bus_size_t off,
u_int16_t val)
{
u_int32_t data, n, be;
n = (ioh + off) % 4;
be = (0xf & ~((1U << n) | (1U << (n + 1)))) << NP_CBE_SHIFT;
data = val << (8 * n);
_bs_w(v, ioh, off, be, data);
}
static void
_pci_io_bs_w_4(void *v, bus_space_handle_t ioh, bus_size_t off,
u_int32_t val)
{
_bs_w(v, ioh, off, 0, val);
}
#ifdef __ARMEB__
static void
_pci_io_bs_w_1_s(void *v, bus_space_handle_t ioh, bus_size_t off,
u_int8_t val)
{
u_int32_t data, n, be;
n = (ioh + off) % 4;
be = (0xf & ~(1U << n)) << NP_CBE_SHIFT;
data = val << (8 * n);
_bs_w(v, ioh, off, be, data);
}
static void
_pci_io_bs_w_2_s(void *v, bus_space_handle_t ioh, bus_size_t off,
u_int16_t val)
{
u_int32_t data, n, be;
n = (ioh + off) % 4;
be = (0xf & ~((1U << n) | (1U << (n + 1)))) << NP_CBE_SHIFT;
data = val << (8 * n);
_bs_w(v, ioh, off, be, data);
}
static void
_pci_io_bs_w_4_s(void *v, bus_space_handle_t ioh, bus_size_t off,
u_int32_t val)
{
_bs_w(v, ioh, off, 0, htole32(val));
}
#endif /* __ARMEB__ */
/* mem bs */
int
ixp425_pci_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size,
int cacheable, bus_space_handle_t *bshp)
{
vm_paddr_t pa, endpa;
pa = trunc_page(bpa);
endpa = round_page(bpa + size);
*bshp = (vm_offset_t)pmap_mapdev(pa, endpa - pa);
return (0);
}
void
ixp425_pci_mem_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size)
{
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);
}
int
ixp425_pci_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 cacheable,
bus_addr_t *bpap, bus_space_handle_t *bshp)
{
panic("ixp425_mem_bs_alloc(): not implemented\n");
}
void
ixp425_pci_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
{
panic("ixp425_mem_bs_free(): not implemented\n");
}
#ifdef __ARMEB__
static u_int8_t
_pci_mem_bs_r_1(void *v, bus_space_handle_t ioh, bus_size_t off)
{
return ixp425_pci_mem_bs_r_1(v, ioh, off);
}
static u_int16_t
_pci_mem_bs_r_2(void *v, bus_space_handle_t ioh, bus_size_t off)
{
return (ixp425_pci_mem_bs_r_2(v, ioh, off));
}
static u_int32_t
_pci_mem_bs_r_4(void *v, bus_space_handle_t ioh, bus_size_t off)
{
u_int32_t data;
data = ixp425_pci_mem_bs_r_4(v, ioh, off);
return (le32toh(data));
}
static void
_pci_mem_bs_w_1(void *v, bus_space_handle_t ioh, bus_size_t off,
u_int8_t val)
{
ixp425_pci_mem_bs_w_1(v, ioh, off, val);
}
static void
_pci_mem_bs_w_2(void *v, bus_space_handle_t ioh, bus_size_t off,
u_int16_t val)
{
ixp425_pci_mem_bs_w_2(v, ioh, off, val);
}
static void
_pci_mem_bs_w_4(void *v, bus_space_handle_t ioh, bus_size_t off,
u_int32_t val)
{
ixp425_pci_mem_bs_w_4(v, ioh, off, htole32(val));
}
#endif /* __ARMEB__ */
/* End of ixp425_pci_space.c */