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NetBSD/sys/dev/pci/if_re_pci.c
jonathan 9d44c4d9b1 Snapshot of incomplete-but-working split of re(4) driver into a 
bus-independent backend, with PCI and CardBus attachment code.
The committed code has two serious bugs:

1. The driver makes no attempt to recover resources when a (Cardbus)
instance is removed; bus resources are leaked.

2. In testing with a NetGear GA-511, the Cardbus card never responded
   to a reset/wakeup if the card is powered down after attachment.
   So for now, leave cardbus instances powered up at attachment
   (insertion, or at boot if a card is already present).

That aside, it acutally works on my GA-511. Committed as-is despite
the bugs, after repeated requests to make the code available for
further testing.  Also requires sys/dev/mii/miidevs rev 1.54 -> 1.55,
and consequent regen of miidevs{,_data}.h.
2004-12-23 06:26:30 +00:00

276 lines
6.7 KiB
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/*
* RealTek 8139C+/8169/8169S/8110S PCI NIC driver
*
* Written by Bill Paul <wpaul@windriver.com>
* Senior Networking Software Engineer
* Wind River Systems
*
* NetBSD bus-specific frontends for written by
* Jonathan Stone <jonathan@netbsd.org>
*/
#include "bpfilter.h"
#include "vlan.h"
#include <sys/types.h>
#include <machine/bus.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#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/socket.h>
#include <sys/device.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/if_dl.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#include <net/if_vlanvar.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
/*
* Default to using PIO access for this driver.
*/
#define RE_USEIOSPACE
#include <dev/ic/rtl81x9reg.h>
#include <dev/ic/rtl81x9var.h>
#include <dev/ic/rtl8169var.h>
struct re_pci_softc {
struct rtk_softc sc_rtk;
void *sc_ih;
pci_chipset_tag_t sc_pc;
pcitag_t sc_pcitag;
};
static int re_pci_probe(struct device *, struct cfdata *, void *);
static void re_pci_attach(struct device *, struct device *, void *);
/*
* Various supported device vendors/types and their names.
*/
static struct rtk_type re_devs[] = {
{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8139, RTK_HWREV_8139CPLUS,
"RealTek 8139C+ 10/100BaseTX" },
{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8169, RTK_HWREV_8169,
"RealTek 8169 Gigabit Ethernet" },
{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8169, RTK_HWREV_8169S,
"RealTek 8169S Single-chip Gigabit Ethernet" },
{ PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8169, RTK_HWREV_8110S,
"RealTek 8110S Single-chip Gigabit Ethernet" },
{ 0, 0, 0, NULL }
};
static struct rtk_hwrev re_hwrevs[] = {
{ RTK_HWREV_8139, RTK_8139, "" },
{ RTK_HWREV_8139A, RTK_8139, "A" },
{ RTK_HWREV_8139AG, RTK_8139, "A-G" },
{ RTK_HWREV_8139B, RTK_8139, "B" },
{ RTK_HWREV_8130, RTK_8139, "8130" },
{ RTK_HWREV_8139C, RTK_8139, "C" },
{ RTK_HWREV_8139D, RTK_8139, "8139D/8100B/8100C" },
{ RTK_HWREV_8139CPLUS, RTK_8139CPLUS, "C+"},
{ RTK_HWREV_8169, RTK_8169, "8169"},
{ RTK_HWREV_8169S, RTK_8169, "8169S"},
{ RTK_HWREV_8110S, RTK_8169, "8110S"},
{ RTK_HWREV_8100, RTK_8139, "8100"},
{ RTK_HWREV_8101, RTK_8139, "8101"},
{ 0, 0, NULL }
};
CFATTACH_DECL(re_pci, sizeof(struct re_pci_softc), re_pci_probe, re_pci_attach,
NULL, NULL);
/*
* Probe for a RealTek 8139C+/8169/8110 chip. Check the PCI vendor and device
* IDs against our list and return a device name if we find a match.
*/
static int
re_pci_probe(struct device *parent, struct cfdata *match, void *aux)
{
struct rtk_type *t;
struct pci_attach_args *pa = aux;
bus_space_tag_t rtk_btag;
bus_space_handle_t rtk_bhandle;
bus_size_t bsize;
u_int32_t hwrev;
t = re_devs;
while(t->rtk_name != NULL) {
if ((PCI_VENDOR(pa->pa_id) == t->rtk_vid) &&
(PCI_PRODUCT(pa->pa_id) == t->rtk_did)) {
/*
* Temporarily map the I/O space
* so we can read the chip ID register.
*/
if (pci_mapreg_map(pa, RTK_PCI_LOIO,
PCI_MAPREG_TYPE_IO, 0, &rtk_btag,
&rtk_bhandle, NULL, &bsize)) {
printf("can't map i/o space\n");
return 0;
}
hwrev = bus_space_read_4(rtk_btag, rtk_bhandle,
RTK_TXCFG) & RTK_TXCFG_HWREV;
bus_space_unmap(rtk_btag, rtk_bhandle, bsize);
if (t->rtk_basetype == hwrev)
return 2; /* defeat rtk(4) */
}
t++;
}
return 0;
}
static void
re_pci_attach(struct device *parent, struct device *self, void *aux)
{
#if 0
u_char eaddr[ETHER_ADDR_LEN];
u_int16_t val;
struct rtk_hwrev *hw_rev;
int i, addr_len;
#endif
struct re_pci_softc *psc = (void *)self;
struct rtk_softc *sc = &psc->sc_rtk;
struct pci_attach_args *pa = aux;
pci_chipset_tag_t pc = pa->pa_pc;
pci_intr_handle_t ih;
const char *intrstr = NULL;
struct ifnet *ifp;
struct rtk_type *t;
struct rtk_hwrev *hw_rev;
int hwrev;
int error = 0;
pcireg_t command;
#if 0 /*ndef BURN_BRIDGES*/
/*
* Handle power management nonsense.
*/
if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
u_int32_t iobase, membase, irq;
/* Save important PCI config data. */
iobase = pci_read_config(dev, RTK_PCI_LOIO, 4);
membase = pci_read_config(dev, RTK_PCI_LOMEM, 4);
irq = pci_read_config(dev, RTK_PCI_INTLINE, 4);
/* Reset the power state. */
printf("%s: chip is is in D%d power mode "
"-- setting to D0\n", unit,
pci_get_powerstate(dev));
pci_set_powerstate(dev, PCI_POWERSTATE_D0);
/* Restore PCI config data. */
pci_write_config(dev, RTK_PCI_LOIO, iobase, 4);
pci_write_config(dev, RTK_PCI_LOMEM, membase, 4);
pci_write_config(dev, RTK_PCI_INTLINE, irq, 4);
}
#endif
/*
* Map control/status registers.
*/
command = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
command |= PCI_COMMAND_MASTER_ENABLE;
pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, command);
#ifdef RE_USEIOSPACE
if (pci_mapreg_map(pa, RTK_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0,
&sc->rtk_btag, &sc->rtk_bhandle, NULL, NULL)) {
printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
error = ENXIO;
goto fail;
}
#else
if (pci_mapreg_map(pa, RTK_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0,
&sc->rtk_btag, &sc->rtk_bhandle, NULL, NULL)) {
printf("%s: can't map mem space\n", sc->sc_dev.dv_xname);
error = ENXIO;
goto fail;
}
#endif
t = re_devs;
hwrev = CSR_READ_4(sc, RTK_TXCFG) & RTK_TXCFG_HWREV;
while(t->rtk_name != NULL) {
if ((PCI_VENDOR(pa->pa_id) == t->rtk_vid) &&
(PCI_PRODUCT(pa->pa_id) == t->rtk_did)) {
if (t->rtk_basetype == hwrev)
break;
}
t++;
}
hw_rev = re_hwrevs;
hwrev = CSR_READ_4(sc, RTK_TXCFG) & RTK_TXCFG_HWREV;
while (hw_rev->rtk_desc != NULL) {
if (hw_rev->rtk_rev == hwrev) {
sc->rtk_type = hw_rev->rtk_type;
break;
}
hw_rev++;
}
sc->sc_dmat = pa->pa_dmat;
/*
* No power/enable/disable machinery for PCI attac;
* mark the card enabled now.
*/
sc->sc_flags |= RTK_ENABLED;
re_attach(sc);
ifp = &sc->ethercom.ec_if;
/* Hook interrupt last to avoid having to lock softc */
/* Allocate interrupt */
if (pci_intr_map(pa, &ih)) {
printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname);
error = ENXIO;
ether_ifdetach(ifp);
if_detach(ifp);
goto fail;
}
intrstr = pci_intr_string(pc, ih);
psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, re_intr, sc);
if (psc->sc_ih == NULL) {
printf("%s: couldn't establish interrupt",
sc->sc_dev.dv_xname);
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
ether_ifdetach(ifp);
if_detach(ifp);
return;
}
aprint_normal("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
fail:
#if 0
if (error)
re_detach(sc);
#endif
return;
}
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