120 lines
4.2 KiB
C
120 lines
4.2 KiB
C
/* $NetBSD: ahcisata_pci.c,v 1.1 2007/05/12 11:04:59 bouyer Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2006 Manuel Bouyer.
|
|
*
|
|
* 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 Manuel Bouyer.
|
|
* 4. 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 ``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 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>
|
|
__KERNEL_RCSID(0, "$NetBSD: ahcisata_pci.c,v 1.1 2007/05/12 11:04:59 bouyer Exp $");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/disklabel.h>
|
|
|
|
#include <uvm/uvm_extern.h>
|
|
|
|
#include <dev/pci/pcivar.h>
|
|
#include <dev/pci/pcidevs.h>
|
|
#include <dev/pci/pciidereg.h>
|
|
#include <dev/pci/pciidevar.h>
|
|
#include <dev/ic/ahcisatavar.h>
|
|
|
|
static int ahci_pci_match(struct device *, struct cfdata *, void *);
|
|
static void ahci_pci_attach(struct device *, struct device *, void *);
|
|
|
|
CFATTACH_DECL(ahcisata_pci, sizeof(struct ahci_softc),
|
|
ahci_pci_match, ahci_pci_attach, NULL, NULL);
|
|
|
|
static int
|
|
ahci_pci_match(struct device *parent, struct cfdata *match,
|
|
void *aux)
|
|
{
|
|
struct pci_attach_args *pa = aux;
|
|
bus_space_tag_t regt;
|
|
bus_space_handle_t regh;
|
|
bus_size_t size;
|
|
int ret = 0;
|
|
|
|
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE &&
|
|
PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_SATA &&
|
|
PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_SATA_AHCI) {
|
|
/* check if the chip is in ahci mode */
|
|
if (pci_mapreg_map(pa, AHCI_PCI_ABAR,
|
|
PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0,
|
|
®t, ®h, NULL, &size) != 0)
|
|
return (0);
|
|
if (bus_space_read_4(regt, regh, AHCI_GHC) & AHCI_GHC_AE)
|
|
ret = 3;
|
|
bus_space_unmap(regt, regh, size);
|
|
return (3);
|
|
}
|
|
|
|
return (ret);
|
|
}
|
|
|
|
static void
|
|
ahci_pci_attach(struct device *parent, struct device *self, void *aux)
|
|
{
|
|
struct pci_attach_args *pa = aux;
|
|
struct ahci_softc *sc = (struct ahci_softc *)self;
|
|
bus_size_t size;
|
|
char devinfo[256];
|
|
const char *intrstr;
|
|
pci_intr_handle_t intrhandle;
|
|
void *ih;
|
|
|
|
if (pci_mapreg_map(pa, AHCI_PCI_ABAR,
|
|
PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0,
|
|
&sc->sc_ahcit, &sc->sc_ahcih, NULL, &size) != 0) {
|
|
aprint_error("%s: can't map ahci registers\n", AHCINAME(sc));
|
|
return;
|
|
}
|
|
pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
|
|
aprint_naive(": AHCI disk controller\n");
|
|
aprint_normal(": %s\n", devinfo);
|
|
|
|
if (pci_intr_map(pa, &intrhandle) != 0) {
|
|
aprint_error("%s: couldn't map interrupt\n", AHCINAME(sc));
|
|
return;
|
|
}
|
|
intrstr = pci_intr_string(pa->pa_pc, intrhandle);
|
|
ih = pci_intr_establish(pa->pa_pc, intrhandle, IPL_BIO, ahci_intr, sc);
|
|
if (ih == NULL) {
|
|
aprint_error("%s: couldn't establish interrupt", AHCINAME(sc));
|
|
return;
|
|
}
|
|
aprint_normal("%s: interrupting at %s\n", AHCINAME(sc),
|
|
intrstr ? intrstr : "unknown interrupt");
|
|
sc->sc_dmat = pa->pa_dmat;
|
|
ahci_attach(sc);
|
|
}
|