File: [local] / sys / arch / alpha / pci / lca.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:04:46 2008 UTC (16 years, 6 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
|
/* $OpenBSD: lca.c,v 1.19 2006/12/14 17:36:12 kettenis Exp $ */
/* $NetBSD: lca.c,v 1.14 1996/12/05 01:39:35 cgd Exp $ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION 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.
*/
/*
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Authors: Jeffrey Hsu and Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <uvm/uvm_extern.h>
#include <machine/autoconf.h>
#include <machine/rpb.h>
#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <alpha/pci/lcareg.h>
#include <alpha/pci/lcavar.h>
#ifdef DEC_AXPPCI_33
#include <alpha/pci/pci_axppci_33.h>
#endif
#ifdef DEC_ALPHABOOK1
#include <alpha/pci/pci_alphabook1.h>
#endif
#ifdef DEC_EB66
#include <alpha/pci/pci_eb66.h>
#endif
int lcamatch(struct device *, void *, void *);
void lcaattach(struct device *, struct device *, void *);
struct cfattach lca_ca = {
sizeof(struct device), lcamatch, lcaattach,
};
struct cfdriver lca_cd = {
NULL, "lca", DV_DULL,
};
int lcaprint(void *, const char *pnp);
#if 0
int lca_bus_get_window(int, int,
struct alpha_bus_space_translation *);
#endif
/* There can be only one. */
int lcafound;
struct lca_config lca_configuration;
int
lcamatch(parent, match, aux)
struct device *parent;
void *match;
void *aux;
{
struct mainbus_attach_args *ma = aux;
/* Make sure that we're looking for a LCA. */
if (strcmp(ma->ma_name, lca_cd.cd_name) != 0)
return (0);
if (lcafound)
return (0);
return (1);
}
/*
* Set up the chipset's function pointers.
*/
void
lca_init(lcp, mallocsafe)
struct lca_config *lcp;
int mallocsafe;
{
/*
* The LCA HAE register is WRITE-ONLY, so we can't tell where
* the second sparse window is actually mapped. Therefore,
* we have to guess where it is. This seems to be the normal
* address.
*/
lcp->lc_s_mem_w2_masked_base = 0x80000000;
if (!lcp->lc_initted) {
/* don't do these twice since they set up extents */
lca_bus_io_init(&lcp->lc_iot, lcp);
lca_bus_mem_init(&lcp->lc_memt, lcp);
#if 0
/*
* We have 1 I/O window and 3 MEM windows.
*/
alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_IO] = 1;
alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_MEM] = 3;
alpha_bus_get_window = lca_bus_get_window;
#endif
}
lcp->lc_mallocsafe = mallocsafe;
lca_pci_init(&lcp->lc_pc, lcp);
alpha_pci_chipset = &lcp->lc_pc;
alpha_pci_chipset->pc_name = "lca";
alpha_pci_chipset->pc_mem = LCA_PCI_SPARSE;
alpha_pci_chipset->pc_ports = LCA_PCI_SIO;
alpha_pci_chipset->pc_hae_mask = IOC_HAE_ADDREXT;
alpha_pci_chipset->pc_dense = LCA_PCI_DENSE;
alpha_pci_chipset->pc_bwx = 0;
/*
* Refer to ``DECchip 21066 and DECchip 21068 Alpha AXP Microprocessors
* Hardware Reference Manual''.
* ...
*/
/*
* According to section 6.4.1, all bits of the IOC_HAE register are
* undefined after reset. Bits <31:27> are write-only. However, we
* cannot blindly set it to zero. The serial ROM code that initializes
* the PCI devices' address spaces, allocates sparse memory blocks in
* the range that must use the IOC_HAE register for address translation,
* and sets this register accordingly (see section 6.4.14).
*
* IOC_HAE left AS IS.
*/
/* According to section 6.4.2, all bits of the IOC_CONF register are
* undefined after reset. Bits <1:0> are write-only. Set them to
* 0x00 for PCI Type 0 configuration access.
*
* IOC_CONF set to ZERO.
*/
REGVAL64(LCA_IOC_CONF) = 0;
lcp->lc_initted = 1;
}
void
lcaattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct lca_config *lcp;
struct pcibus_attach_args pba;
/* note that we've attached the chipset; can't have 2 LCAs. */
/* Um, not sure about this. XXX JH */
lcafound = 1;
/*
* set up the chipset's info; done once at console init time
* (maybe), but we must do it twice to take care of things
* that need to use memory allocation.
*/
lcp = &lca_configuration;
lca_init(lcp, 1);
/* XXX print chipset information */
printf("\n");
lca_dma_init(lcp);
switch (cputype) {
#ifdef DEC_AXPPCI_33
case ST_DEC_AXPPCI_33:
pci_axppci_33_pickintr(lcp);
break;
#endif
#ifdef DEC_ALPHABOOK1
case ST_ALPHABOOK1:
pci_alphabook1_pickintr(lcp);
break;
#endif
#ifdef DEC_EB66
case ST_EB66:
pci_eb66_pickintr(lcp);
break;
#endif
default:
panic("lcaattach: shouldn't be here, really...");
}
pba.pba_busname = "pci";
pba.pba_iot = &lcp->lc_iot;
pba.pba_memt = &lcp->lc_memt;
pba.pba_dmat =
alphabus_dma_get_tag(&lcp->lc_dmat_direct, ALPHA_BUS_PCI);
pba.pba_pc = &lcp->lc_pc;
pba.pba_domain = pci_ndomains++;
pba.pba_bus = 0;
pba.pba_bridgetag = NULL;
#ifdef notyet
pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED |
PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY;
#endif
config_found(self, &pba, lcaprint);
}
int
lcaprint(aux, pnp)
void *aux;
const char *pnp;
{
register struct pcibus_attach_args *pba = aux;
/* only PCIs can attach to LCAes; easy. */
if (pnp)
printf("%s at %s", pba->pba_busname, pnp);
printf(" bus %d", pba->pba_bus);
return (UNCONF);
}
#if 0
int
lca_bus_get_window(type, window, abst)
int type, window;
struct alpha_bus_space_translation *abst;
{
struct lca_config *lcp = &lca_configuration;
bus_space_tag_t st;
switch (type) {
case ALPHA_BUS_TYPE_PCI_IO:
st = &lcp->lc_iot;
break;
case ALPHA_BUS_TYPE_PCI_MEM:
st = &lcp->lc_memt;
break;
default:
panic("lca_bus_get_window");
}
return (alpha_bus_space_get_window(st, window, abst));
}
#endif