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/* $OpenBSD: if_re_pci.c,v 1.53 2020/06/17 10:48:44 claudio 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/timeout.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_media.h>
#include <netinet/in.h>
#include <netinet/if_ether.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 */
pci_chipset_tag_t sc_pc;
pcitag_t sc_pcitag;
bus_size_t sc_iosize;
};
const struct pci_matchid re_pci_devices[] = {
{ PCI_VENDOR_COREGA, PCI_PRODUCT_COREGA_CGLAPCIGT },
{ PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DGE528T },
{ PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DGE530T_C1 },
{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8101E },
{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8168 },
{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8169 },
{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8169SC },
{ PCI_VENDOR_TTTECH, PCI_PRODUCT_TTTECH_MC322 },
{ 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 *);
int re_pci_detach(struct device *, int);
int re_pci_activate(struct device *, int);
/*
* PCI autoconfig definitions
*/
struct cfattach re_pci_ca = {
sizeof(struct re_pci_softc),
re_pci_probe,
re_pci_attach,
re_pci_detach,
re_pci_activate
};
/*
* 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);
/* C+ mode 8139's */
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_REALTEK &&
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_REALTEK_RT8139 &&
PCI_REVISION(pa->pa_class) == 0x20)
return (1);
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,
nitems(re_pci_devices)));
}
/*
* 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;
pcireg_t reg;
int offset;
pci_set_powerstate(pa->pa_pc, pa->pa_tag, PCI_PMCSR_STATE_D0);
#ifndef SMALL_KERNEL
/* Enable power management for wake on lan. */
pci_conf_write(pc, pa->pa_tag, RL_PCI_PMCSR, RL_PME_EN);
#endif
/*
* Map control/status registers.
*/
if (pci_mapreg_map(pa, RL_PCI_LOMEM64, PCI_MAPREG_TYPE_MEM |
PCI_MAPREG_MEM_TYPE_64BIT, 0, &sc->rl_btag, &sc->rl_bhandle,
NULL, &psc->sc_iosize, 0)) {
if (pci_mapreg_map(pa, RL_PCI_LOMEM, PCI_MAPREG_TYPE_MEM |
PCI_MAPREG_MEM_TYPE_32BIT, 0, &sc->rl_btag, &sc->rl_bhandle,
NULL, &psc->sc_iosize, 0)) {
if (pci_mapreg_map(pa, RL_PCI_LOIO, PCI_MAPREG_TYPE_IO,
0, &sc->rl_btag, &sc->rl_bhandle, NULL,
&psc->sc_iosize, 0)) {
printf(": can't map mem or i/o space\n");
return;
}
}
}
/* Allocate interrupt */
if (pci_intr_map_msi(pa, &ih) == 0)
sc->rl_flags |= RL_FLAG_MSI;
else if (pci_intr_map(pa, &ih) != 0) {
printf(": couldn't map interrupt\n");
return;
}
intrstr = pci_intr_string(pc, ih);
sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET | IPL_MPSAFE, re_intr,
sc, sc->sc_dev.dv_xname);
if (sc->sc_ih == NULL) {
printf(": couldn't establish interrupt");
if (intrstr != NULL)
printf(" at %s", intrstr);
return;
}
sc->sc_dmat = pa->pa_dmat;
psc->sc_pc = pc;
/*
* PCI Express check.
*/
if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PCIEXPRESS,
&offset, NULL)) {
/* Disable PCIe ASPM and ECPM. */
reg = pci_conf_read(pc, pa->pa_tag, offset + PCI_PCIE_LCSR);
reg &= ~(PCI_PCIE_LCSR_ASPM_L0S | PCI_PCIE_LCSR_ASPM_L1 |
PCI_PCIE_LCSR_ECPM);
pci_conf_write(pc, pa->pa_tag, offset + PCI_PCIE_LCSR, reg);
sc->rl_flags |= RL_FLAG_PCIE;
}
if (!(PCI_VENDOR(pa->pa_id) == PCI_VENDOR_REALTEK &&
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_REALTEK_RT8139)) {
u_int8_t cfg;
CSR_WRITE_1(sc, RL_EECMD, RL_EE_MODE);
cfg = CSR_READ_1(sc, RL_CFG2);
if (sc->rl_flags & RL_FLAG_MSI) {
cfg |= RL_CFG2_MSI;
CSR_WRITE_1(sc, RL_CFG2, cfg);
} else {
if ((cfg & RL_CFG2_MSI) != 0) {
cfg &= ~RL_CFG2_MSI;
CSR_WRITE_1(sc, RL_CFG2, cfg);
}
}
CSR_WRITE_1(sc, RL_EECMD, RL_EEMODE_OFF);
}
sc->sc_product = PCI_PRODUCT(pa->pa_id);
/* Call bus-independent attach routine */
if (re_attach(sc, intrstr)) {
pci_intr_disestablish(pc, sc->sc_ih);
bus_space_unmap(sc->rl_btag, sc->rl_bhandle, psc->sc_iosize);
}
}
int
re_pci_detach(struct device *self, int flags)
{
struct re_pci_softc *psc = (struct re_pci_softc *)self;
struct rl_softc *sc = &psc->sc_rl;
struct ifnet *ifp = &sc->sc_arpcom.ac_if;
/* Remove timeout handler */
timeout_del(&sc->timer_handle);
/* Detach PHY */
if (LIST_FIRST(&sc->sc_mii.mii_phys) != NULL)
mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY);
/* Delete media stuff */
ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY);
ether_ifdetach(ifp);
if_detach(ifp);
/* Disable interrupts */
if (sc->sc_ih != NULL)
pci_intr_disestablish(psc->sc_pc, sc->sc_ih);
/* Free pci resources */
bus_space_unmap(sc->rl_btag, sc->rl_bhandle, psc->sc_iosize);
return (0);
}
int
re_pci_activate(struct device *self, int act)
{
struct re_pci_softc *psc = (struct re_pci_softc *)self;
struct rl_softc *sc = &psc->sc_rl;
struct ifnet *ifp = &sc->sc_arpcom.ac_if;
switch (act) {
case DVACT_SUSPEND:
if (ifp->if_flags & IFF_RUNNING)
re_stop(ifp);
break;
case DVACT_RESUME:
if (ifp->if_flags & IFF_UP)
re_init(ifp);
break;
}
return (0);
}
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