NetBSD-5.0.2/sys/dev/pci/if_ex_pci.c
/* $NetBSD: if_ex_pci.c,v 1.49 2008/04/28 20:23:55 martin Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Frank van der Linden; Jason R. Thorpe of the Numerical Aerospace
* Simulation Facility, NASA Ames Research Center.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_ex_pci.c,v 1.49 2008/04/28 20:23:55 martin Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <sys/select.h>
#include <sys/device.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#include <sys/cpu.h>
#include <sys/bus.h>
#include <sys/intr.h>
#include <dev/mii/miivar.h>
#include <dev/mii/mii.h>
#include <dev/ic/elink3var.h>
#include <dev/ic/elink3reg.h>
#include <dev/ic/elinkxlreg.h>
#include <dev/ic/elinkxlvar.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcidevs.h>
struct ex_pci_softc {
struct ex_softc sc_ex;
/* PCI function status space. 556,556B requests it. */
bus_space_tag_t sc_funct;
bus_space_handle_t sc_funch;
pci_chipset_tag_t psc_pc; /* pci chipset tag */
pcireg_t psc_regs[0x40>>2]; /* saved PCI config regs (sparse) */
pcitag_t psc_tag; /* pci device tag */
int psc_pwrmgmt_csr_reg; /* ACPI power management register */
pcireg_t psc_pwrmgmt_csr; /* ...and the contents at D0 */
};
/*
* PCI constants.
* XXX These should be in a common file!
*/
#define PCI_CONN 0x48 /* Connector type */
#define PCI_CBIO 0x10 /* Configuration Base IO Address */
#define PCI_POWERCTL 0xe0
#define PCI_FUNCMEM 0x18
#define PCI_INTR 4
#define PCI_INTRACK 0x00008000
static int ex_pci_match(device_t, cfdata_t, void *);
static void ex_pci_attach(device_t, device_t, void *);
static void ex_pci_intr_ack(struct ex_softc *);
static int ex_pci_enable(struct ex_softc *);
static void ex_pci_disable(struct ex_softc *);
static void ex_pci_confreg_restore(struct ex_pci_softc *);
static int ex_d3tod0(pci_chipset_tag_t, pcitag_t, device_t, pcireg_t);
CFATTACH_DECL_NEW(ex_pci, sizeof(struct ex_pci_softc),
ex_pci_match, ex_pci_attach, NULL, NULL);
static const struct ex_pci_product {
uint32_t epp_prodid; /* PCI product ID */
int epp_flags; /* initial softc flags */
const char *epp_name; /* device name */
} ex_pci_products[] = {
{ PCI_PRODUCT_3COM_3C900TPO, 0,
"3c900-TPO Ethernet" },
{ PCI_PRODUCT_3COM_3C900COMBO, 0,
"3c900-COMBO Ethernet" },
{ PCI_PRODUCT_3COM_3C905TX, EX_CONF_MII,
"3c905-TX 10/100 Ethernet" },
{ PCI_PRODUCT_3COM_3C905T4, EX_CONF_MII,
"3c905-T4 10/100 Ethernet" },
{ PCI_PRODUCT_3COM_3C900BTPO, EX_CONF_90XB,
"3c900B-TPO Ethernet" },
{ PCI_PRODUCT_3COM_3C900BCOMBO, EX_CONF_90XB,
"3c900B-COMBO Ethernet" },
{ PCI_PRODUCT_3COM_3C900BTPC, EX_CONF_90XB,
"3c900B-TPC Ethernet" },
{ PCI_PRODUCT_3COM_3C905BTX, EX_CONF_90XB|EX_CONF_MII|EX_CONF_INTPHY,
"3c905B-TX 10/100 Ethernet" },
{ PCI_PRODUCT_3COM_3C905BT4, EX_CONF_90XB|EX_CONF_MII,
"3c905B-T4 10/100 Ethernet" },
{ PCI_PRODUCT_3COM_3C905BCOMBO, EX_CONF_90XB/*|EX_CONF_MII|EX_CONF_INTPHY*/,
"3c905B-COMBO 10/100 Ethernet" },
{ PCI_PRODUCT_3COM_3C905BFX, EX_CONF_90XB,
"3c905B-FX 10/100 Ethernet" },
/* XXX Internal PHY? */
{ PCI_PRODUCT_3COM_3C980SRV, EX_CONF_90XB,
"3c980 Server Adapter 10/100 Ethernet" },
{ PCI_PRODUCT_3COM_3C980CTXM, EX_CONF_90XB|EX_CONF_MII,
"3c980C-TXM 10/100 Ethernet" },
{ PCI_PRODUCT_3COM_3C905CTX, EX_CONF_90XB|EX_CONF_MII,
"3c905C-TX 10/100 Ethernet with mngmt" },
{ PCI_PRODUCT_3COM_3C450TX, EX_CONF_90XB,
"3c450-TX 10/100 Ethernet" },
{ PCI_PRODUCT_3COM_3CSOHO100TX, EX_CONF_90XB,
"3cSOHO100-TX 10/100 Ethernet" },
{ PCI_PRODUCT_3COM_3C555,
EX_CONF_90XB | EX_CONF_MII | EX_CONF_EEPROM_OFF |
EX_CONF_EEPROM_8BIT,
"3c555 MiniPCI 10/100 Ethernet" },
{ PCI_PRODUCT_3COM_3C556,
EX_CONF_90XB | EX_CONF_MII | EX_CONF_EEPROM_OFF |
EX_CONF_PCI_FUNCREG | EX_CONF_RESETHACK | EX_CONF_INV_LED_POLARITY |
EX_CONF_PHY_POWER | EX_CONF_EEPROM_8BIT,
"3c556 MiniPCI 10/100 Ethernet" },
{ PCI_PRODUCT_3COM_3C556B,
EX_CONF_90XB | EX_CONF_MII | EX_CONF_EEPROM_OFF |
EX_CONF_PCI_FUNCREG | EX_CONF_RESETHACK | EX_CONF_INV_LED_POLARITY |
EX_CONF_PHY_POWER | EX_CONF_NO_XCVR_PWR,
"3c556B MiniPCI 10/100 Ethernet" },
{ PCI_PRODUCT_3COM_3C905CXTX, EX_CONF_90XB|EX_CONF_MII,
"3c905CX-TX 10/100 Ethernet with mngmt" },
{ PCI_PRODUCT_3COM_3C920BEMBW, EX_CONF_90XB|EX_CONF_MII,
"3c920B-EMB-WNM Integrated Fast Ethernet" },
{ 0, 0,
NULL },
};
static const struct ex_pci_product *
ex_pci_lookup(const struct pci_attach_args *pa)
{
const struct ex_pci_product *epp;
if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_3COM)
return (NULL);
for (epp = ex_pci_products; epp->epp_name != NULL; epp++)
if (PCI_PRODUCT(pa->pa_id) == epp->epp_prodid)
return (epp);
return (NULL);
}
static int
ex_pci_match(device_t parent, cfdata_t match,
void *aux)
{
struct pci_attach_args *pa = (struct pci_attach_args *) aux;
if (ex_pci_lookup(pa) != NULL)
return (2); /* beat ep_pci */
return (0);
}
static void
ex_pci_attach(device_t parent, device_t self, void *aux)
{
struct ex_pci_softc *psc = device_private(self);
struct ex_softc *sc = &psc->sc_ex;
struct pci_attach_args *pa = aux;
pci_chipset_tag_t pc = pa->pa_pc;
pci_intr_handle_t ih;
const struct ex_pci_product *epp;
const char *intrstr = NULL;
int rev;
int error;
aprint_naive(": Ethernet controller\n");
sc->sc_dev = self;
if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
&sc->sc_iot, &sc->sc_ioh, NULL, NULL)) {
aprint_error(": can't map i/o space\n");
return;
}
epp = ex_pci_lookup(pa);
if (epp == NULL) {
printf("\n");
panic("ex_pci_attach: impossible");
}
rev = PCI_REVISION(pci_conf_read(pc, pa->pa_tag, PCI_CLASS_REG));
aprint_normal(": 3Com %s (rev. 0x%x)\n", epp->epp_name, rev);
sc->sc_dmat = pa->pa_dmat;
sc->ex_bustype = EX_BUS_PCI;
sc->ex_conf = epp->epp_flags;
/* Enable the card. */
pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) |
PCI_COMMAND_MASTER_ENABLE);
psc->psc_pc = pc;
psc->psc_tag = pa->pa_tag;
psc->psc_regs[PCI_COMMAND_STATUS_REG>>2] =
pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
psc->psc_regs[PCI_BHLC_REG>>2] =
pci_conf_read(pc, pa->pa_tag, PCI_BHLC_REG);
psc->psc_regs[PCI_CBIO>>2] =
pci_conf_read(pc, pa->pa_tag, PCI_CBIO);
if (sc->ex_conf & EX_CONF_PCI_FUNCREG) {
/* Map PCI function status window. */
if (pci_mapreg_map(pa, PCI_FUNCMEM, PCI_MAPREG_TYPE_MEM, 0,
&psc->sc_funct, &psc->sc_funch, NULL, NULL)) {
aprint_error_dev(self,
"unable to map function status window\n");
return;
}
sc->intr_ack = ex_pci_intr_ack;
psc->psc_regs[PCI_FUNCMEM>>2] =
pci_conf_read(pc, pa->pa_tag, PCI_FUNCMEM);
}
psc->psc_regs[PCI_INTERRUPT_REG>>2] =
pci_conf_read(pc, pa->pa_tag, PCI_INTERRUPT_REG);
/* power up chip */
error = pci_activate(pa->pa_pc, pa->pa_tag, self, ex_d3tod0);
switch (error) {
case EOPNOTSUPP:
break;
case 0:
sc->enable = ex_pci_enable;
sc->disable = ex_pci_disable;
break;
default:
aprint_error_dev(self, "cannot activate %d\n", error);
return;
}
sc->enabled = 1;
/* Map and establish the interrupt. */
if (pci_intr_map(pa, &ih)) {
aprint_error_dev(self, "couldn't map interrupt\n");
return;
}
intrstr = pci_intr_string(pc, ih);
sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, ex_intr, sc);
if (sc->sc_ih == NULL) {
aprint_error_dev(self, "couldn't establish interrupt");
if (intrstr != NULL)
aprint_normal(" at %s", intrstr);
aprint_normal("\n");
return;
}
aprint_normal_dev(self, "interrupting at %s\n", intrstr);
ex_config(sc);
if (sc->ex_conf & EX_CONF_PCI_FUNCREG)
bus_space_write_4(psc->sc_funct, psc->sc_funch, PCI_INTR,
PCI_INTRACK);
if (sc->disable != NULL)
ex_disable(sc);
}
static void
ex_pci_intr_ack(struct ex_softc *sc)
{
struct ex_pci_softc *psc = (struct ex_pci_softc *)sc;
bus_space_write_4(psc->sc_funct, psc->sc_funch, PCI_INTR,
PCI_INTRACK);
}
static int
ex_d3tod0(pci_chipset_tag_t pc, pcitag_t tag, device_t self, pcireg_t state)
{
#define PCI_CACHE_LAT_BIST 0x0c
#define PCI_BAR0 0x10
#define PCI_BAR1 0x14
#define PCI_BAR2 0x18
#define PCI_BAR3 0x1C
#define PCI_BAR4 0x20
#define PCI_BAR5 0x24
#define PCI_EXP_ROM_BAR 0x30
#define PCI_INT_GNT_LAT 0x3c
uint32_t base0;
uint32_t base1;
uint32_t romaddr;
uint32_t pci_command;
uint32_t pci_int_lat;
uint32_t pci_cache_lat;
if (state != PCI_PMCSR_STATE_D3)
return 0;
aprint_normal_dev(self, "found in power state D%d, "
"attempting to recover.\n", state);
pci_command = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
base0 = pci_conf_read(pc, tag, PCI_BAR0);
base1 = pci_conf_read(pc, tag, PCI_BAR1);
romaddr = pci_conf_read(pc, tag, PCI_EXP_ROM_BAR);
pci_cache_lat= pci_conf_read(pc, tag, PCI_CACHE_LAT_BIST);
pci_int_lat = pci_conf_read(pc, tag, PCI_INT_GNT_LAT);
pci_conf_write(pc, tag, PCI_POWERCTL, 0);
pci_conf_write(pc, tag, PCI_BAR0, base0);
pci_conf_write(pc, tag, PCI_BAR1, base1);
pci_conf_write(pc, tag, PCI_EXP_ROM_BAR, romaddr);
pci_conf_write(pc, tag, PCI_INT_GNT_LAT, pci_int_lat);
pci_conf_write(pc, tag, PCI_CACHE_LAT_BIST, pci_cache_lat);
pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG,
(PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_IO_ENABLE));
aprint_normal_dev(self, "changed power state to D0.\n");
return 0;
}
static void
ex_pci_confreg_restore(struct ex_pci_softc *psc)
{
struct ex_softc *sc = (void *) psc;
pcireg_t reg;
reg = pci_conf_read(psc->psc_pc, psc->psc_tag, PCI_COMMAND_STATUS_REG);
pci_conf_write(psc->psc_pc, psc->psc_tag,
PCI_COMMAND_STATUS_REG,
(reg & 0xffff0000) |
(psc->psc_regs[PCI_COMMAND_STATUS_REG>>2] & 0xffff));
pci_conf_write(psc->psc_pc, psc->psc_tag, PCI_BHLC_REG,
psc->psc_regs[PCI_BHLC_REG>>2]);
pci_conf_write(psc->psc_pc, psc->psc_tag, PCI_CBIO,
psc->psc_regs[PCI_CBIO>>2]);
if (sc->ex_conf & EX_CONF_PCI_FUNCREG)
pci_conf_write(psc->psc_pc, psc->psc_tag, PCI_FUNCMEM,
psc->psc_regs[PCI_FUNCMEM>>2]);
pci_conf_write(psc->psc_pc, psc->psc_tag, PCI_INTERRUPT_REG,
psc->psc_regs[PCI_INTERRUPT_REG>>2]);
}
static int
ex_pci_enable(struct ex_softc *sc)
{
struct ex_pci_softc *psc = (void *) sc;
aprint_debug_dev(sc->sc_dev, "going to power state D0\n");
/* Bring the device into D0 power state. */
pci_conf_write(psc->psc_pc, psc->psc_tag,
psc->psc_pwrmgmt_csr_reg, psc->psc_pwrmgmt_csr);
/* Now restore the configuration registers. */
ex_pci_confreg_restore(psc);
return (0);
}
static void
ex_pci_disable(struct ex_softc *sc)
{
struct ex_pci_softc *psc = (void *) sc;
aprint_debug_dev(sc->sc_dev, "going to power state D3\n");
/* Put the device into D3 state. */
pci_conf_write(psc->psc_pc, psc->psc_tag,
psc->psc_pwrmgmt_csr_reg, (psc->psc_pwrmgmt_csr &
~PCI_PMCSR_STATE_MASK) | PCI_PMCSR_STATE_D3);
}