File: [local] / sys / dev / eisa / ahc_eisa.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:09:55 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: ahc_eisa.c,v 1.18 2007/04/10 17:47:55 miod Exp $ */
/* $NetBSD: ahc_eisa.c,v 1.10 1996/10/21 22:30:58 thorpej Exp $ */
/*
* Product specific probe and attach routines for:
* 27/284X and aic7770 motherboard SCSI controllers
*
* Copyright (c) 1994, 1995, 1996 Justin T. Gibbs.
* 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 immediately at the beginning of the file, without modification,
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $Id: ahc_eisa.c,v 1.1.1.1 2008/03/04 16:09:55 nbrk Exp $
*/
#include "eisa.h"
#if NEISA > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>
#include <dev/eisa/eisareg.h>
#include <dev/eisa/eisavar.h>
#include <dev/eisa/eisadevs.h>
#include <dev/ic/aic7xxx_openbsd.h>
#include <dev/ic/aic7xxx_inline.h>
#define AHC_EISA_SLOT_OFFSET 0xc00
#define AHC_EISA_IOSIZE 0x100
int ahc_eisa_irq(bus_space_tag_t, bus_space_handle_t);
int ahc_eisa_match(struct device *, void *, void *);
void ahc_eisa_attach(struct device *, struct device *, void *);
struct cfattach ahc_eisa_ca = {
sizeof(struct ahc_softc), ahc_eisa_match, ahc_eisa_attach
};
/*
* Return irq setting of the board, otherwise -1.
*/
int
ahc_eisa_irq(iot, ioh)
bus_space_tag_t iot;
bus_space_handle_t ioh;
{
int irq;
u_char intdef;
u_char hcntrl;
/* Pause the card preserving the IRQ type */
hcntrl = bus_space_read_1(iot, ioh, HCNTRL) & IRQMS;
bus_space_write_1(iot, ioh, HCNTRL, hcntrl | PAUSE);
intdef = bus_space_read_1(iot, ioh, INTDEF);
switch (irq = (intdef & VECTOR)) {
case 9:
case 10:
case 11:
case 12:
case 14:
case 15:
break;
default:
printf("ahc_eisa_irq: illegal irq setting %d\n", intdef);
return -1;
}
/* Note that we are going and return (to probe) */
return irq;
}
/*
* Check the slots looking for a board we recognise
* If we find one, note its address (slot) and call
* the actual probe routine to check it out.
*/
int
ahc_eisa_match(parent, match, aux)
struct device *parent;
void *match, *aux;
{
struct eisa_attach_args *ea = aux;
bus_space_tag_t iot = ea->ea_iot;
bus_space_handle_t ioh;
int irq;
/* must match one of our known ID strings */
if (strcmp(ea->ea_idstring, "ADP7770") &&
strcmp(ea->ea_idstring, "ADP7771")
#if 0
&& strcmp(ea->ea_idstring, "ADP7756") /* not EISA, but VL */
&& strcmp(ea->ea_idstring, "ADP7757") /* not EISA, but VL */
#endif
)
return (0);
if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
AHC_EISA_SLOT_OFFSET, AHC_EISA_IOSIZE, 0, &ioh))
return (0);
irq = ahc_eisa_irq(iot, ioh);
bus_space_unmap(iot, ioh, AHC_EISA_IOSIZE);
return (irq >= 0);
}
void
ahc_eisa_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct ahc_softc *ahc = (void *)self;
struct eisa_attach_args *ea = aux;
bus_space_tag_t iot = ea->ea_iot;
bus_space_handle_t ioh;
int irq;
eisa_chipset_tag_t ec = ea->ea_ec;
eisa_intr_handle_t ih;
const char *model, *intrstr;
u_int biosctrl;
u_int scsiconf;
u_int scsiconf1;
u_int intdef;
ahc_set_name(ahc, ahc->sc_dev.dv_xname);
ahc_set_unit(ahc, ahc->sc_dev.dv_unit);
/* set dma tags */
ahc->parent_dmat = ea->ea_dmat;
if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
AHC_EISA_SLOT_OFFSET, AHC_EISA_IOSIZE, 0, &ioh))
panic("ahc_eisa_attach: could not map I/O addresses");
if ((irq = ahc_eisa_irq(iot, ioh)) < 0)
panic("ahc_eisa_attach: ahc_eisa_irq failed!");
if (strcmp(ea->ea_idstring, "ADP7770") == 0) {
model = EISA_PRODUCT_ADP7770;
} else if (strcmp(ea->ea_idstring, "ADP7771") == 0) {
model = EISA_PRODUCT_ADP7771;
} else {
panic("ahc_eisa_attach: Unknown device type %s",
ea->ea_idstring);
}
printf(": %s\n", model);
ahc->channel = 'A';
ahc->chip = AHC_AIC7770|AHC_EISA;
ahc->features = AHC_AIC7770_FE;
ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
ahc->flags |= AHC_PAGESCBS;
if (ahc_reset(ahc, /*reinit*/FALSE) != 0)
return;
/* See if we are edge triggered */
intdef = ahc_inb(ahc, INTDEF);
if ((intdef & EDGE_TRIG) != 0)
ahc->flags |= AHC_EDGE_INTERRUPT;
if (eisa_intr_map(ec, irq, &ih)) {
printf("%s: couldn't map interrupt (%d)\n",
ahc->sc_dev.dv_xname, irq);
return;
}
/*
* Tell the user what type of interrupts we're using.
* useful for debugging irq problems
*/
if (bootverbose) {
printf("%s: Using %s Interrupts\n",
ahc_name(ahc),
ahc->pause & IRQMS ?
"Level Sensitive" : "Edge Triggered");
}
/*
* Now that we know we own the resources we need, do the
* card initialization.
*
* First, the aic7770 card specific setup.
*/
biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL);
scsiconf = ahc_inb(ahc, SCSICONF);
scsiconf1 = ahc_inb(ahc, SCSICONF + 1);
/* Get the primary channel information */
if ((biosctrl & CHANNEL_B_PRIMARY) != 0)
ahc->flags |= AHC_PRIMARY_CHANNEL;
if ((biosctrl & BIOSMODE) == BIOSDISABLED) {
ahc->flags |= AHC_USEDEFAULTS;
} else if ((ahc->features & AHC_WIDE) != 0) {
ahc->our_id = scsiconf1 & HWSCSIID;
if (scsiconf & TERM_ENB)
ahc->flags |= AHC_TERM_ENB_A;
} else {
ahc->our_id = scsiconf & HSCSIID;
ahc->our_id_b = scsiconf1 & HSCSIID;
if (scsiconf & TERM_ENB)
ahc->flags |= AHC_TERM_ENB_A;
if (scsiconf1 & TERM_ENB)
ahc->flags |= AHC_TERM_ENB_B;
}
/*
* We have no way to tell, so assume extended
* translation is enabled.
*/
ahc->flags |= AHC_EXTENDED_TRANS_A|AHC_EXTENDED_TRANS_B;
/*
* See if we have a Rev E or higher aic7770. Anything below a
* Rev E will have a R/O autoflush disable configuration bit.
* It's still not clear exactly what is different about the Rev E.
* We think it allows 8 bit entries in the QOUTFIFO to support
* "paging" SCBs so you can have more than 4 commands active at
* once.
*/
{
char *id_string;
u_char sblkctl;
u_char sblkctl_orig;
sblkctl_orig = ahc_inb(ahc, SBLKCTL);
sblkctl = sblkctl_orig ^ AUTOFLUSHDIS;
ahc_outb(ahc, SBLKCTL, sblkctl);
sblkctl = ahc_inb(ahc, SBLKCTL);
if (sblkctl != sblkctl_orig) {
id_string = "aic7770 >= Rev E, ";
/*
* Ensure autoflush is enabled
*/
sblkctl &= ~AUTOFLUSHDIS;
ahc_outb(ahc, SBLKCTL, sblkctl);
/* Allow paging on this adapter */
ahc->flags |= AHC_PAGESCBS;
} else
id_string = "aic7770 <= Rev C, ";
printf("%s: %s", ahc_name(ahc), id_string);
}
/* Setup the FIFO threshold and the bus off time */
{
u_char hostconf = ahc_inb(ahc, HOSTCONF);
ahc_outb(ahc, BUSSPD, hostconf & DFTHRSH);
ahc_outb(ahc, BUSTIME, (hostconf << 2) & BOFF);
}
/*
* Generic aic7xxx initialization.
*/
if (ahc_init(ahc)) {
ahc_free(ahc);
return;
}
/*
* Link this softc in with all other ahc instances.
*/
ahc_softc_insert(ahc);
/*
* Enable the board's BUS drivers
*/
ahc_outb(ahc, BCTL, ENABLE);
intrstr = eisa_intr_string(ec, ih);
/*
* The IRQMS bit enables level sensitive interrupts only allow
* IRQ sharing if its set.
*/
ahc->ih = eisa_intr_establish(ec, ih,
ahc->pause & IRQMS ? IST_LEVEL : IST_EDGE, IPL_BIO,
ahc_platform_intr, ahc, ahc->sc_dev.dv_xname);
if (ahc->ih == NULL) {
printf("%s: couldn't establish interrupt",
ahc->sc_dev.dv_xname);
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
ahc_free(ahc);
return;
}
if (intrstr != NULL)
printf("%s: interrupting at %s\n", ahc->sc_dev.dv_xname,
intrstr);
ahc_intr_enable(ahc, TRUE);
/* Attach sub-devices - always succeeds */
ahc_attach(ahc);
}
#endif /* NEISA > 0 */