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7a79cebfba
freebsd/sys/dev/ral/if_ral_pci.c
Gleb Smirnoff 7a79cebfba Replay r286410. Change KPI of how device drivers that provide wireless 
connectivity interact with the net80211 stack.

Historical background: originally wireless devices created an interface,
just like Ethernet devices do. Name of an interface matched the name of
the driver that created. Later, wlan(4) layer was introduced, and the
wlanX interfaces become the actual interface, leaving original ones as
"a parent interface" of wlanX. Kernelwise, the KPI between net80211 layer
and a driver became a mix of methods that pass a pointer to struct ifnet
as identifier and methods that pass pointer to struct ieee80211com. From
user point of view, the parent interface just hangs on in the ifconfig
list, and user can't do anything useful with it.

Now, the struct ifnet goes away. The struct ieee80211com is the only
KPI between a device driver and net80211. Details:

- The struct ieee80211com is embedded into drivers softc.
- Packets are sent via new ic_transmit method, which is very much like
  the previous if_transmit.
- Bringing parent up/down is done via new ic_parent method, which notifies
  driver about any changes: number of wlan(4) interfaces, number of them
  in promisc or allmulti state.
- Device specific ioctls (if any) are received on new ic_ioctl method.
- Packets/errors accounting are done by the stack. In certain cases, when
  driver experiences errors and can not attribute them to any specific
  interface, driver updates ic_oerrors or ic_ierrors counters.

Details on interface configuration with new world order:
- A sequence of commands needed to bring up wireless DOESN"T change.
- /etc/rc.conf parameters DON'T change.
- List of devices that can be used to create wlan(4) interfaces is
  now provided by net.wlan.devices sysctl.

Most drivers in this change were converted by me, except of wpi(4),
that was done by Andriy Voskoboinyk. Big thanks to Kevin Lo for testing
changes to at least 8 drivers. Thanks to pluknet@, Oliver Hartmann,
Olivier Cochard, gjb@, mmoll@, op@ and lev@, who also participated in
testing.

Reviewed by:	adrian
Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2015-08-27 08:56:39 +00:00

321 lines
7.8 KiB
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/*-
* Copyright (c) 2005, 2006
* Damien Bergamini <damien.bergamini@free.fr>
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* PCI/Cardbus front-end for the Ralink RT2560/RT2561/RT2561S/RT2661 driver.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/rman.h>
#include <sys/socket.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_media.h>
#include <net/route.h>
#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_radiotap.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/ral/rt2560var.h>
#include <dev/ral/rt2661var.h>
#include <dev/ral/rt2860var.h>
MODULE_DEPEND(ral, pci, 1, 1, 1);
MODULE_DEPEND(ral, firmware, 1, 1, 1);
MODULE_DEPEND(ral, wlan, 1, 1, 1);
MODULE_DEPEND(ral, wlan_amrr, 1, 1, 1);
static int ral_msi_disable;
TUNABLE_INT("hw.ral.msi_disable", &ral_msi_disable);
struct ral_pci_ident {
uint16_t vendor;
uint16_t device;
const char *name;
};
static const struct ral_pci_ident ral_pci_ids[] = {
{ 0x1432, 0x7708, "Edimax RT2860" },
{ 0x1432, 0x7711, "Edimax RT3591" },
{ 0x1432, 0x7722, "Edimax RT3591" },
{ 0x1432, 0x7727, "Edimax RT2860" },
{ 0x1432, 0x7728, "Edimax RT2860" },
{ 0x1432, 0x7738, "Edimax RT2860" },
{ 0x1432, 0x7748, "Edimax RT2860" },
{ 0x1432, 0x7758, "Edimax RT2860" },
{ 0x1432, 0x7768, "Edimax RT2860" },
{ 0x1462, 0x891a, "MSI RT3090" },
{ 0x1814, 0x0201, "Ralink Technology RT2560" },
{ 0x1814, 0x0301, "Ralink Technology RT2561S" },
{ 0x1814, 0x0302, "Ralink Technology RT2561" },
{ 0x1814, 0x0401, "Ralink Technology RT2661" },
{ 0x1814, 0x0601, "Ralink Technology RT2860" },
{ 0x1814, 0x0681, "Ralink Technology RT2890" },
{ 0x1814, 0x0701, "Ralink Technology RT2760" },
{ 0x1814, 0x0781, "Ralink Technology RT2790" },
{ 0x1814, 0x3060, "Ralink Technology RT3060" },
{ 0x1814, 0x3062, "Ralink Technology RT3062" },
{ 0x1814, 0x3090, "Ralink Technology RT3090" },
{ 0x1814, 0x3091, "Ralink Technology RT3091" },
{ 0x1814, 0x3092, "Ralink Technology RT3092" },
{ 0x1814, 0x3390, "Ralink Technology RT3390" },
{ 0x1814, 0x3562, "Ralink Technology RT3562" },
{ 0x1814, 0x3592, "Ralink Technology RT3592" },
{ 0x1814, 0x3593, "Ralink Technology RT3593" },
{ 0x1814, 0x5360, "Ralink Technology RT5390" },
{ 0x1814, 0x5362, "Ralink Technology RT5392" },
{ 0x1814, 0x5390, "Ralink Technology RT5390" },
{ 0x1814, 0x5392, "Ralink Technology RT5392" },
{ 0x1814, 0x539a, "Ralink Technology RT5390" },
{ 0x1814, 0x539f, "Ralink Technology RT5390" },
{ 0x1a3b, 0x1059, "AWT RT2890" },
{ 0, 0, NULL }
};
static const struct ral_opns {
int (*attach)(device_t, int);
int (*detach)(void *);
void (*shutdown)(void *);
void (*suspend)(void *);
void (*resume)(void *);
void (*intr)(void *);
} ral_rt2560_opns = {
rt2560_attach,
rt2560_detach,
rt2560_stop,
rt2560_stop,
rt2560_resume,
rt2560_intr
}, ral_rt2661_opns = {
rt2661_attach,
rt2661_detach,
rt2661_shutdown,
rt2661_suspend,
rt2661_resume,
rt2661_intr
}, ral_rt2860_opns = {
rt2860_attach,
rt2860_detach,
rt2860_shutdown,
rt2860_suspend,
rt2860_resume,
rt2860_intr
};
struct ral_pci_softc {
union {
struct rt2560_softc sc_rt2560;
struct rt2661_softc sc_rt2661;
struct rt2860_softc sc_rt2860;
} u;
const struct ral_opns *sc_opns;
struct resource *irq;
struct resource *mem;
void *sc_ih;
};
static int ral_pci_probe(device_t);
static int ral_pci_attach(device_t);
static int ral_pci_detach(device_t);
static int ral_pci_shutdown(device_t);
static int ral_pci_suspend(device_t);
static int ral_pci_resume(device_t);
static device_method_t ral_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ral_pci_probe),
DEVMETHOD(device_attach, ral_pci_attach),
DEVMETHOD(device_detach, ral_pci_detach),
DEVMETHOD(device_shutdown, ral_pci_shutdown),
DEVMETHOD(device_suspend, ral_pci_suspend),
DEVMETHOD(device_resume, ral_pci_resume),
DEVMETHOD_END
};
static driver_t ral_pci_driver = {
"ral",
ral_pci_methods,
sizeof (struct ral_pci_softc)
};
static devclass_t ral_devclass;
DRIVER_MODULE(ral, pci, ral_pci_driver, ral_devclass, NULL, NULL);
static int
ral_pci_probe(device_t dev)
{
const struct ral_pci_ident *ident;
for (ident = ral_pci_ids; ident->name != NULL; ident++) {
if (pci_get_vendor(dev) == ident->vendor &&
pci_get_device(dev) == ident->device) {
device_set_desc(dev, ident->name);
return (BUS_PROBE_DEFAULT);
}
}
return ENXIO;
}
static int
ral_pci_attach(device_t dev)
{
struct ral_pci_softc *psc = device_get_softc(dev);
struct rt2560_softc *sc = &psc->u.sc_rt2560;
int count, error, rid;
pci_enable_busmaster(dev);
switch (pci_get_device(dev)) {
case 0x0201:
psc->sc_opns = &ral_rt2560_opns;
break;
case 0x0301:
case 0x0302:
case 0x0401:
psc->sc_opns = &ral_rt2661_opns;
break;
default:
psc->sc_opns = &ral_rt2860_opns;
break;
}
rid = PCIR_BAR(0);
psc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE);
if (psc->mem == NULL) {
device_printf(dev, "could not allocate memory resource\n");
return ENXIO;
}
sc->sc_st = rman_get_bustag(psc->mem);
sc->sc_sh = rman_get_bushandle(psc->mem);
sc->sc_invalid = 1;
rid = 0;
if (ral_msi_disable == 0) {
count = 1;
if (pci_alloc_msi(dev, &count) == 0)
rid = 1;
}
psc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE |
(rid != 0 ? 0 : RF_SHAREABLE));
if (psc->irq == NULL) {
device_printf(dev, "could not allocate interrupt resource\n");
pci_release_msi(dev);
bus_release_resource(dev, SYS_RES_MEMORY,
rman_get_rid(psc->mem), psc->mem);
return ENXIO;
}
error = (*psc->sc_opns->attach)(dev, pci_get_device(dev));
if (error != 0) {
(void)ral_pci_detach(dev);
return error;
}
/*
* Hook our interrupt after all initialization is complete.
*/
error = bus_setup_intr(dev, psc->irq, INTR_TYPE_NET | INTR_MPSAFE,
NULL, psc->sc_opns->intr, psc, &psc->sc_ih);
if (error != 0) {
device_printf(dev, "could not set up interrupt\n");
(void)ral_pci_detach(dev);
return error;
}
sc->sc_invalid = 0;
return 0;
}
static int
ral_pci_detach(device_t dev)
{
struct ral_pci_softc *psc = device_get_softc(dev);
struct rt2560_softc *sc = &psc->u.sc_rt2560;
/* check if device was removed */
sc->sc_invalid = !bus_child_present(dev);
if (psc->sc_ih != NULL)
bus_teardown_intr(dev, psc->irq, psc->sc_ih);
(*psc->sc_opns->detach)(psc);
bus_generic_detach(dev);
bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(psc->irq),
psc->irq);
pci_release_msi(dev);
bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(psc->mem),
psc->mem);
return 0;
}
static int
ral_pci_shutdown(device_t dev)
{
struct ral_pci_softc *psc = device_get_softc(dev);
(*psc->sc_opns->shutdown)(psc);
return 0;
}
static int
ral_pci_suspend(device_t dev)
{
struct ral_pci_softc *psc = device_get_softc(dev);
(*psc->sc_opns->suspend)(psc);
return 0;
}
static int
ral_pci_resume(device_t dev)
{
struct ral_pci_softc *psc = device_get_softc(dev);
(*psc->sc_opns->resume)(psc);
return 0;
}
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