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/* $OpenBSD: if_re_pci.c,v 1.6 2006/03/27 17:43:25 brad Exp $ */
/*
* Copyright (c) 2005 Peter Valchev <pvalchev@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* PCI front-end for the Realtek 8169
*/
#include <sys/param.h>
#include <sys/endian.h>
#include <sys/systm.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/if_ether.h>
#endif
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <dev/ic/rtl81x9reg.h>
#include <dev/ic/revar.h>
struct re_pci_softc {
/* General */
struct rl_softc sc_rl;
/* PCI-specific data */
void *sc_ih;
pci_chipset_tag_t sc_pc;
pcitag_t sc_pcitag;
};
const struct pci_matchid re_pci_devices[] = {
{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8111B },
{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8169 },
{ PCI_VENDOR_COREGA, PCI_PRODUCT_COREGA_CGLAPCIGT },
{ PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DGE528T },
{ PCI_VENDOR_USR2, PCI_PRODUCT_USR2_USR997902 }
};
#define RE_LINKSYS_EG1032_SUBID 0x00241737
int re_pci_probe(struct device *, void *, void *);
void re_pci_attach(struct device *, struct device *, void *);
/*
* PCI autoconfig definitions
*/
struct cfattach re_pci_ca = {
sizeof(struct re_pci_softc),
re_pci_probe,
re_pci_attach
};
/*
* Probe for a Realtek 8169/8110 chip. Check the PCI vendor and device
* IDs against our list and return a device name if we find a match.
*/
int
re_pci_probe(struct device *parent, void *match, void *aux)
{
struct pci_attach_args *pa = aux;
pci_chipset_tag_t pc = pa->pa_pc;
pcireg_t subid;
subid = pci_conf_read(pc, pa->pa_tag, PCI_SUBSYS_ID_REG);
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_LINKSYS &&
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_LINKSYS_EG1032 &&
subid == RE_LINKSYS_EG1032_SUBID)
return (1);
return (pci_matchbyid((struct pci_attach_args *)aux, re_pci_devices,
sizeof(re_pci_devices)/sizeof(re_pci_devices[0])));
}
/*
* PCI-specific attach routine
*/
void
re_pci_attach(struct device *parent, struct device *self, void *aux)
{
struct re_pci_softc *psc = (struct re_pci_softc *)self;
struct rl_softc *sc = &psc->sc_rl;
struct pci_attach_args *pa = aux;
pci_chipset_tag_t pc = pa->pa_pc;
pci_intr_handle_t ih;
const char *intrstr = NULL;
bus_size_t iosize;
pcireg_t command;
/*
* Handle power management nonsense.
*/
command = pci_conf_read(pc, pa->pa_tag, RL_PCI_CAPID) & 0x000000FF;
if (command == 0x01) {
u_int32_t iobase, membase, irq;
/* Save important PCI config data. */
iobase = pci_conf_read(pc, pa->pa_tag, RL_PCI_LOIO);
membase = pci_conf_read(pc, pa->pa_tag, RL_PCI_LOMEM);
irq = pci_conf_read(pc, pa->pa_tag, RL_PCI_INTLINE);
/* Reset the power state. */
printf("%s: chip is is in D%d power mode "
"-- setting to D0\n", sc->sc_dev.dv_xname,
command & RL_PSTATE_MASK);
command &= 0xFFFFFFFC;
/* Restore PCI config data. */
pci_conf_write(pc, pa->pa_tag, RL_PCI_LOIO, iobase);
pci_conf_write(pc, pa->pa_tag, RL_PCI_LOMEM, membase);
pci_conf_write(pc, pa->pa_tag, RL_PCI_INTLINE, irq);
}
/*
* Map control/status registers.
*/
command = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
if ((command & (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE)) == 0) {
printf(": neither i/o nor mem enabled\n");
return;
}
if (command & PCI_COMMAND_MEM_ENABLE) {
if (pci_mapreg_map(pa, RL_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0,
&sc->rl_btag, &sc->rl_bhandle, NULL, &iosize, 0)) {
printf(": can't map mem space\n");
return;
}
} else {
if (pci_mapreg_map(pa, RL_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0,
&sc->rl_btag, &sc->rl_bhandle, NULL, &iosize, 0)) {
printf(": can't map i/o space\n");
return;
}
}
/* Allocate interrupt */
if (pci_intr_map(pa, &ih)) {
printf(": couldn't map interrupt\n");
return;
}
intrstr = pci_intr_string(pc, ih);
psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, re_intr, sc,
sc->sc_dev.dv_xname);
if (psc->sc_ih == NULL) {
printf(": couldn't establish interrupt");
if (intrstr != NULL)
printf(" at %s", intrstr);
return;
}
printf(": %s", intrstr);
sc->sc_dmat = pa->pa_dmat;
sc->sc_flags |= RL_ENABLED;
sc->rl_type = RL_8169;
/* Call bus-independent attach routine */
re_attach_common(sc);
}
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