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/*-
* FreeBSD, PCI product support functions
*
* Copyright (c) 1995-2001 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, this list of conditions, and the following disclaimer,
* without modification, immediately at the beginning of the file.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU Public License ("GPL").
*
* 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: //depot/aic7xxx/freebsd/dev/aic7xxx/ahd_pci.c#17 $
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <dev/aic7xxx/aic79xx_osm.h>
static int ahd_pci_probe(device_t dev);
static int ahd_pci_attach(device_t dev);
static device_method_t ahd_pci_device_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ahd_pci_probe),
DEVMETHOD(device_attach, ahd_pci_attach),
DEVMETHOD(device_detach, ahd_detach),
{ 0, 0 }
};
static driver_t ahd_pci_driver = {
"ahd",
ahd_pci_device_methods,
sizeof(struct ahd_softc)
};
static devclass_t ahd_devclass;
DRIVER_MODULE(ahd, pci, ahd_pci_driver, ahd_devclass, 0, 0);
MODULE_DEPEND(ahd_pci, ahd, 1, 1, 1);
MODULE_VERSION(ahd_pci, 1);
static int
ahd_pci_probe(device_t dev)
{
struct ahd_pci_identity *entry;
entry = ahd_find_pci_device(dev);
if (entry != NULL) {
device_set_desc(dev, entry->name);
return (BUS_PROBE_DEFAULT);
}
return (ENXIO);
}
static int
ahd_pci_attach(device_t dev)
{
struct ahd_pci_identity *entry;
struct ahd_softc *ahd;
char *name;
int error;
entry = ahd_find_pci_device(dev);
if (entry == NULL)
return (ENXIO);
/*
* Allocate a softc for this card and
* set it up for attachment by our
* common detect routine.
*/
name = malloc(strlen(device_get_nameunit(dev)) + 1, M_DEVBUF, M_NOWAIT);
if (name == NULL)
return (ENOMEM);
strcpy(name, device_get_nameunit(dev));
ahd = ahd_alloc(dev, name);
if (ahd == NULL)
return (ENOMEM);
ahd_set_unit(ahd, device_get_unit(dev));
/*
* Should we bother disabling 39Bit addressing
* based on installed memory?
*/
if (sizeof(bus_addr_t) > 4)
ahd->flags |= AHD_39BIT_ADDRESSING;
/* Allocate a dmatag for our SCB DMA maps */
error = aic_dma_tag_create(ahd, /*parent*/bus_get_dma_tag(dev),
/*alignment*/1, /*boundary*/0,
(ahd->flags & AHD_39BIT_ADDRESSING)
? 0x7FFFFFFFFF
: BUS_SPACE_MAXADDR_32BIT,
/*highaddr*/BUS_SPACE_MAXADDR,
/*filter*/NULL, /*filterarg*/NULL,
/*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
/*nsegments*/AHD_NSEG,
/*maxsegsz*/AHD_MAXTRANSFER_SIZE,
/*flags*/0,
&ahd->parent_dmat);
if (error != 0) {
printf("ahd_pci_attach: Could not allocate DMA tag "
"- error %d\n", error);
ahd_free(ahd);
return (ENOMEM);
}
ahd->dev_softc = dev;
error = ahd_pci_config(ahd, entry);
if (error != 0) {
ahd_free(ahd);
return (error);
}
ahd_sysctl(ahd);
ahd_attach(ahd);
return (0);
}
int
ahd_pci_map_registers(struct ahd_softc *ahd)
{
struct resource *regs;
struct resource *regs2;
int regs_type;
int regs_id;
int regs_id2;
int allow_memio;
regs = NULL;
regs2 = NULL;
regs_type = 0;
regs_id = 0;
/* Retrieve the per-device 'allow_memio' hint */
if (resource_int_value(device_get_name(ahd->dev_softc),
device_get_unit(ahd->dev_softc),
"allow_memio", &allow_memio) != 0) {
if (bootverbose)
device_printf(ahd->dev_softc,
"Defaulting to MEMIO on\n");
allow_memio = 1;
}
if ((ahd->bugs & AHD_PCIX_MMAPIO_BUG) == 0
&& allow_memio != 0) {
regs_type = SYS_RES_MEMORY;
regs_id = AHD_PCI_MEMADDR;
regs = bus_alloc_resource_any(ahd->dev_softc, regs_type,
®s_id, RF_ACTIVE);
if (regs != NULL) {
int error;
ahd->tags[0] = rman_get_bustag(regs);
ahd->bshs[0] = rman_get_bushandle(regs);
ahd->tags[1] = ahd->tags[0];
error = bus_space_subregion(ahd->tags[0], ahd->bshs[0],
/*offset*/0x100,
/*size*/0x100,
&ahd->bshs[1]);
/*
* Do a quick test to see if memory mapped
* I/O is functioning correctly.
*/
if (error != 0
|| ahd_pci_test_register_access(ahd) != 0) {
device_printf(ahd->dev_softc,
"PCI Device %d:%d:%d failed memory "
"mapped test. Using PIO.\n",
aic_get_pci_bus(ahd->dev_softc),
aic_get_pci_slot(ahd->dev_softc),
aic_get_pci_function(ahd->dev_softc));
bus_release_resource(ahd->dev_softc, regs_type,
regs_id, regs);
regs = NULL;
AHD_CORRECTABLE_ERROR(ahd);
}
}
}
if (regs == NULL) {
regs_type = SYS_RES_IOPORT;
regs_id = AHD_PCI_IOADDR0;
regs = bus_alloc_resource_any(ahd->dev_softc, regs_type,
®s_id, RF_ACTIVE);
if (regs == NULL) {
device_printf(ahd->dev_softc,
"can't allocate register resources\n");
AHD_UNCORRECTABLE_ERROR(ahd);
return (ENOMEM);
}
ahd->tags[0] = rman_get_bustag(regs);
ahd->bshs[0] = rman_get_bushandle(regs);
/* And now the second BAR */
regs_id2 = AHD_PCI_IOADDR1;
regs2 = bus_alloc_resource_any(ahd->dev_softc, regs_type,
®s_id2, RF_ACTIVE);
if (regs2 == NULL) {
device_printf(ahd->dev_softc,
"can't allocate register resources\n");
AHD_UNCORRECTABLE_ERROR(ahd);
return (ENOMEM);
}
ahd->tags[1] = rman_get_bustag(regs2);
ahd->bshs[1] = rman_get_bushandle(regs2);
ahd->platform_data->regs_res_type[1] = regs_type;
ahd->platform_data->regs_res_id[1] = regs_id2;
ahd->platform_data->regs[1] = regs2;
}
ahd->platform_data->regs_res_type[0] = regs_type;
ahd->platform_data->regs_res_id[0] = regs_id;
ahd->platform_data->regs[0] = regs;
return (0);
}
int
ahd_pci_map_int(struct ahd_softc *ahd)
{
int zero;
zero = 0;
ahd->platform_data->irq =
bus_alloc_resource_any(ahd->dev_softc, SYS_RES_IRQ, &zero,
RF_ACTIVE | RF_SHAREABLE);
if (ahd->platform_data->irq == NULL)
return (ENOMEM);
ahd->platform_data->irq_res_type = SYS_RES_IRQ;
return (ahd_map_int(ahd));
}
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