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NetBSD/sys/arch/arm/xscale/i80321.c

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/* $NetBSD: i80321.c,v 1.19 2007/05/12 14:34:03 gavan Exp $ */
/*
* Copyright (c) 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.
*/
/*
* Autoconfiguration support for the Intel i80321 I/O Processor.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: i80321.c,v 1.19 2007/05/12 14:34:03 gavan Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#define _ARM32_BUS_DMA_PRIVATE
#include <machine/bus.h>
#include <arm/xscale/i80321reg.h>
#include <arm/xscale/i80321var.h>
#include "opt_i80321.h"
/*
* Statically-allocated bus_space structure used to access the
* i80321's own registers.
*/
struct bus_space i80321_bs_tag;
/*
* There can be only one i80321, so we keep a global pointer to
* the softc, so board-specific code can use features of the
* i80321 without having to have a handle on the softc itself.
*/
struct i80321_softc *i80321_softc;
static int i80321_iopxs_print(void *, const char *);
/* Built-in devices. */
static const struct iopxs_device {
const char *id_name;
bus_addr_t id_offset;
bus_size_t id_size;
} iopxs_devices[] = {
{ "iopaau", VERDE_AAU_BASE, VERDE_AAU_SIZE },
/* { "iopdma", VERDE_DMA_BASE0, VERDE_DMA_CHSIZE }, */
/* { "iopdma", VERDE_DMA_BASE1, VERDE_DMA_CHSIZE }, */
{ "iopiic", VERDE_I2C_BASE0, VERDE_I2C_CHSIZE },
{ "iopiic", VERDE_I2C_BASE1, VERDE_I2C_CHSIZE },
/* { "iopssp", VERDE_SSP_BASE, VERDE_SSP_SIZE }, */
{ "iopmu", VERDE_MU_BASE, VERDE_MU_SIZE },
{ "iopwdog", 0, 0 },
{ NULL, 0, 0 }
};
static void i80321_pci_dma_init(struct i80321_softc *);
/*
* i80321_attach:
*
* Board-independent attach routine for the i80321.
*/
void
i80321_attach(struct i80321_softc *sc)
{
struct pcibus_attach_args pba;
const struct iopxs_device *id;
struct iopxs_attach_args ia;
pcireg_t preg;
i80321_softc = sc;
/*
* Slice off some useful subregion handles.
*/
if (bus_space_subregion(sc->sc_st, sc->sc_sh, VERDE_ATU_BASE,
VERDE_ATU_SIZE, &sc->sc_atu_sh))
panic("%s: unable to subregion ATU registers",
sc->sc_dev.dv_xname);
/* We expect the Memory Controller to be already sliced off. */
/*
* Program the Inbound windows.
*/
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IALR0,
(0xffffffff - (sc->sc_iwin[0].iwin_size - 1)) & 0xffffffc0);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IATVR0,
sc->sc_iwin[0].iwin_xlate);
if (sc->sc_is_host) {
bus_space_write_4(sc->sc_st, sc->sc_atu_sh,
PCI_MAPREG_START, sc->sc_iwin[0].iwin_base_lo);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh,
PCI_MAPREG_START + 0x04, sc->sc_iwin[0].iwin_base_hi);
} else {
sc->sc_iwin[0].iwin_base_lo = bus_space_read_4(sc->sc_st,
sc->sc_atu_sh, PCI_MAPREG_START);
sc->sc_iwin[0].iwin_base_hi = bus_space_read_4(sc->sc_st,
sc->sc_atu_sh, PCI_MAPREG_START + 0x04);
sc->sc_iwin[0].iwin_base_lo =
PCI_MAPREG_MEM_ADDR(sc->sc_iwin[0].iwin_base_lo);
}
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IALR1,
(0xffffffff - (sc->sc_iwin[1].iwin_size - 1)) & 0xffffffc0);
/* no xlate for window 1 */
if (sc->sc_is_host) {
bus_space_write_4(sc->sc_st, sc->sc_atu_sh,
PCI_MAPREG_START + 0x08, sc->sc_iwin[1].iwin_base_lo);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh,
PCI_MAPREG_START + 0x0c, sc->sc_iwin[1].iwin_base_hi);
} else {
sc->sc_iwin[1].iwin_base_lo = bus_space_read_4(sc->sc_st,
sc->sc_atu_sh, PCI_MAPREG_START + 0x08);
sc->sc_iwin[1].iwin_base_hi = bus_space_read_4(sc->sc_st,
sc->sc_atu_sh, PCI_MAPREG_START + 0x0c);
sc->sc_iwin[1].iwin_base_lo =
PCI_MAPREG_MEM_ADDR(sc->sc_iwin[1].iwin_base_lo);
}
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IALR2,
(0xffffffff - (sc->sc_iwin[2].iwin_size - 1)) & 0xffffffc0);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IATVR2,
sc->sc_iwin[2].iwin_xlate);
if (sc->sc_is_host) {
bus_space_write_4(sc->sc_st, sc->sc_atu_sh,
PCI_MAPREG_START + 0x10, sc->sc_iwin[2].iwin_base_lo);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh,
PCI_MAPREG_START + 0x14, sc->sc_iwin[2].iwin_base_hi);
} else {
sc->sc_iwin[2].iwin_base_lo = bus_space_read_4(sc->sc_st,
sc->sc_atu_sh, PCI_MAPREG_START + 0x10);
sc->sc_iwin[2].iwin_base_hi = bus_space_read_4(sc->sc_st,
sc->sc_atu_sh, PCI_MAPREG_START + 0x14);
sc->sc_iwin[2].iwin_base_lo =
PCI_MAPREG_MEM_ADDR(sc->sc_iwin[2].iwin_base_lo);
}
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IALR3,
(0xffffffff - (sc->sc_iwin[3].iwin_size - 1)) & 0xffffffc0);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_IATVR3,
sc->sc_iwin[3].iwin_xlate);
if (sc->sc_is_host) {
bus_space_write_4(sc->sc_st, sc->sc_atu_sh,
ATU_IABAR3, sc->sc_iwin[3].iwin_base_lo);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh,
ATU_IAUBAR3, sc->sc_iwin[3].iwin_base_hi);
} else {
sc->sc_iwin[3].iwin_base_lo = bus_space_read_4(sc->sc_st,
sc->sc_atu_sh, ATU_IABAR3);
sc->sc_iwin[3].iwin_base_hi = bus_space_read_4(sc->sc_st,
sc->sc_atu_sh, ATU_IAUBAR3);
sc->sc_iwin[3].iwin_base_lo =
PCI_MAPREG_MEM_ADDR(sc->sc_iwin[3].iwin_base_lo);
}
/*
* Mask (disable) the ATU interrupt sources.
* XXX May want to revisit this if we encounter
* XXX an application that wants it.
*/
bus_space_write_4(sc->sc_st, sc->sc_atu_sh,
ATU_ATUIMR,
ATUIMR_IMW1BU|ATUIMR_ISCEM|ATUIMR_RSCEM|ATUIMR_PST|
ATUIMR_DPE|ATUIMR_P_SERR_ASRT|ATUIMR_PMA|ATUIMR_PTAM|
ATUIMR_PTAT|ATUIMR_PMPE);
/*
* Program the outbound windows.
*/
bus_space_write_4(sc->sc_st, sc->sc_atu_sh,
ATU_OIOWTVR, sc->sc_ioout_xlate);
if (!sc->sc_is_host) {
sc->sc_owin[0].owin_xlate_lo = sc->sc_iwin[1].iwin_base_lo;
sc->sc_owin[0].owin_xlate_hi = sc->sc_iwin[1].iwin_base_hi;
}
bus_space_write_4(sc->sc_st, sc->sc_atu_sh,
ATU_OMWTVR0, sc->sc_owin[0].owin_xlate_lo);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh,
ATU_OUMWTVR0, sc->sc_owin[0].owin_xlate_hi);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh,
ATU_OMWTVR1, sc->sc_owin[1].owin_xlate_lo);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh,
ATU_OUMWTVR1, sc->sc_owin[1].owin_xlate_hi);
/*
* Set up the ATU configuration register. All we do
* right now is enable Outbound Windows.
*/
#ifdef I80321_USE_DIRECT_WIN
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_ATUCR,
ATUCR_OUT_EN | ATUCR_DAE);
#else
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_ATUCR,
ATUCR_OUT_EN);
#endif
/*
* Enable bus mastering, memory access, SERR, and parity
* checking on the ATU.
*/
if (sc->sc_is_host) {
preg = bus_space_read_4(sc->sc_st, sc->sc_atu_sh,
PCI_COMMAND_STATUS_REG);
preg |= PCI_COMMAND_MEM_ENABLE | PCI_COMMAND_MASTER_ENABLE |
PCI_COMMAND_PARITY_ENABLE | PCI_COMMAND_SERR_ENABLE;
bus_space_write_4(sc->sc_st, sc->sc_atu_sh,
PCI_COMMAND_STATUS_REG, preg);
}
/* Initialize the bus space tags. */
i80321_io_bs_init(&sc->sc_pci_iot, sc);
i80321_mem_bs_init(&sc->sc_pci_memt, sc);
/* Initialize the PCI chipset tag. */
i80321_pci_init(&sc->sc_pci_chipset, sc);
/* Initialize the DMA tags. */
i80321_pci_dma_init(sc);
i80321_local_dma_init(sc);
/*
* Attach all the IOP built-ins.
*/
for (id = iopxs_devices; id->id_name != NULL; id++) {
ia.ia_name = id->id_name;
ia.ia_st = sc->sc_st;
ia.ia_sh = sc->sc_sh;
ia.ia_dmat = &sc->sc_local_dmat;
ia.ia_offset = id->id_offset;
ia.ia_size = id->id_size;
(void) config_found_ia(&sc->sc_dev, "iopxs", &ia,
i80321_iopxs_print);
}
/*
* Attach the PCI bus.
*/
preg = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR);
preg = PCIXSR_BUSNO(preg);
if (preg == 0xff)
preg = 0;
pba.pba_iot = &sc->sc_pci_iot;
pba.pba_memt = &sc->sc_pci_memt;
pba.pba_dmat = &sc->sc_pci_dmat;
pba.pba_dmat64 = NULL;
pba.pba_pc = &sc->sc_pci_chipset;
pba.pba_bus = preg;
pba.pba_bridgetag = NULL;
pba.pba_intrswiz = 0; /* XXX what if busno != 0? */
pba.pba_intrtag = 0;
pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED |
PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY;
(void) config_found_ia(&sc->sc_dev, "pcibus", &pba, pcibusprint);
}
/*
* i80321_iopxs_print:
*
* Autoconfiguration cfprint routine when attaching
* to the "iopxs" device.
*/
static int
i80321_iopxs_print(void *aux, const char *pnp)
{
return (QUIET);
}
/*
* i80321_pci_dma_init:
*
* Initialize the PCI DMA tag.
*/
static void
i80321_pci_dma_init(struct i80321_softc *sc)
{
bus_dma_tag_t dmat = &sc->sc_pci_dmat;
struct arm32_dma_range *dr = &sc->sc_pci_dma_range;
dr->dr_sysbase = sc->sc_iwin[2].iwin_xlate;
dr->dr_busbase = PCI_MAPREG_MEM_ADDR(sc->sc_iwin[2].iwin_base_lo);
dr->dr_len = sc->sc_iwin[2].iwin_size;
dmat->_ranges = dr;
dmat->_nranges = 1;
dmat->_dmamap_create = _bus_dmamap_create;
dmat->_dmamap_destroy = _bus_dmamap_destroy;
dmat->_dmamap_load = _bus_dmamap_load;
dmat->_dmamap_load_mbuf = _bus_dmamap_load_mbuf;
dmat->_dmamap_load_uio = _bus_dmamap_load_uio;
dmat->_dmamap_load_raw = _bus_dmamap_load_raw;
dmat->_dmamap_unload = _bus_dmamap_unload;
dmat->_dmamap_sync_pre = _bus_dmamap_sync;
dmat->_dmamap_sync_post = NULL;
dmat->_dmamem_alloc = _bus_dmamem_alloc;
dmat->_dmamem_free = _bus_dmamem_free;
dmat->_dmamem_map = _bus_dmamem_map;
dmat->_dmamem_unmap = _bus_dmamem_unmap;
dmat->_dmamem_mmap = _bus_dmamem_mmap;
}
/*
* i80321_local_dma_init:
*
* Initialize the local DMA tag.
*/
void
i80321_local_dma_init(struct i80321_softc *sc)
{
bus_dma_tag_t dmat = &sc->sc_local_dmat;
dmat->_ranges = NULL;
dmat->_nranges = 0;
dmat->_dmamap_create = _bus_dmamap_create;
dmat->_dmamap_destroy = _bus_dmamap_destroy;
dmat->_dmamap_load = _bus_dmamap_load;
dmat->_dmamap_load_mbuf = _bus_dmamap_load_mbuf;
dmat->_dmamap_load_uio = _bus_dmamap_load_uio;
dmat->_dmamap_load_raw = _bus_dmamap_load_raw;
dmat->_dmamap_unload = _bus_dmamap_unload;
dmat->_dmamap_sync_pre = _bus_dmamap_sync;
dmat->_dmamap_sync_post = NULL;
dmat->_dmamem_alloc = _bus_dmamem_alloc;
dmat->_dmamem_free = _bus_dmamem_free;
dmat->_dmamem_map = _bus_dmamem_map;
dmat->_dmamem_unmap = _bus_dmamem_unmap;
dmat->_dmamem_mmap = _bus_dmamem_mmap;
}
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