atw(4) driver from NetBSD (dyoung). Based in part on a port by

Matthew Gream.

Unfortunately, the adm8211 card I have with me does not work correctly
with the driver yet so real testing will have to wait until I get
my hands on an adm8211-based DWL-650 or something similar.

1 files changed, 438 insertions, 0 deletions

diff --git a/sys/dev/cardbus/if_atw_cardbus.c b/sys/dev/cardbus/if_atw_cardbus.c
new file mode 100644
index 00000000000..a7745151715
--- /dev/null
+++ b/sys/dev/cardbus/if_atw_cardbus.c
@@ -0,0 +1,438 @@
+/*	$OpenBSD: if_atw_cardbus.c,v 1.1 2004/06/22 23:55:23 millert Exp $	*/
+/*	$NetBSD: if_atw_cardbus.c,v 1.7 2004/05/08 23:40:01 dyoung Exp $	*/
+
+/*-
+ * Copyright (c) 1999, 2000, 2003 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
+ * NASA Ames Research Center.  This code was adapted for the ADMtek ADM8211
+ * by David Young.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the NetBSD
+ *	Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * 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.
+ */
+
+/*
+ * CardBus bus front-end for the ADMtek ADM8211 802.11 MAC/BBP driver.
+ */
+
+#include "bpfilter.h"
+
+#include <sys/param.h>
+#include <sys/systm.h> 
+#include <sys/mbuf.h>   
+#include <sys/malloc.h>
+#include <sys/kernel.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <sys/errno.h>
+#include <sys/device.h>
+
+#include <machine/endian.h>
+ 
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/if_media.h>
+
+#ifdef INET
+#include <netinet/in.h>
+#include <netinet/if_ether.h>
+#endif
+
+#include <net80211/ieee80211_compat.h>
+#include <net80211/ieee80211_radiotap.h>
+#include <net80211/ieee80211_var.h>
+
+#if NBPFILTER > 0 
+#include <net/bpf.h>
+#endif 
+
+#ifdef NS
+#include <netns/ns.h>
+#include <netns/ns_if.h>
+#endif
+
+#include <machine/bus.h>
+#include <machine/intr.h>
+
+#include <dev/ic/atwreg.h>
+#include <dev/ic/rf3000reg.h>
+#include <dev/ic/si4136reg.h>
+#include <dev/ic/atwvar.h>
+
+#include <dev/pci/pcivar.h>
+#include <dev/pci/pcireg.h>
+#include <dev/pci/pcidevs.h>
+
+#include <dev/cardbus/cardbusvar.h>
+#include <dev/cardbus/cardbusdevs.h>
+
+/*
+ * PCI configuration space registers used by the ADM8211.
+ */
+#define	ATW_PCI_IOBA		0x10	/* i/o mapped base */
+#define	ATW_PCI_MMBA		0x14	/* memory mapped base */
+
+struct atw_cardbus_softc {
+	struct atw_softc sc_atw;	/* real ADM8211 softc */
+
+	/* CardBus-specific goo. */
+	void	*sc_ih;			/* interrupt handle */
+	cardbus_devfunc_t sc_ct;	/* our CardBus devfuncs */
+	cardbustag_t sc_tag;		/* our CardBus tag */
+	int	sc_csr;			/* CSR bits */
+	bus_size_t sc_mapsize;		/* the size of mapped bus space
+					   region */
+
+	int	sc_cben;		/* CardBus enables */
+	int	sc_bar_reg;		/* which BAR to use */
+	pcireg_t sc_bar_val;		/* value of the BAR */
+
+	int	sc_intrline;		/* interrupt line */
+};
+
+int	atw_cardbus_match(struct device *, void *, void *);
+void	atw_cardbus_attach(struct device *, struct device *, void *);
+int	atw_cardbus_detach(struct device *, int);
+
+struct cfattach atw_cardbus_ca = {
+	sizeof(struct atw_cardbus_softc), atw_cardbus_match, atw_cardbus_attach,
+	    atw_cardbus_detach
+};
+
+void	atw_cardbus_setup(struct atw_cardbus_softc *);
+
+int	atw_cardbus_enable(struct atw_softc *);
+void	atw_cardbus_disable(struct atw_softc *);
+void	atw_cardbus_power(struct atw_softc *, int);
+
+void	atw_cardbus_intr_ack(struct atw_softc *);
+
+const struct atw_cardbus_product *atw_cardbus_lookup
+   (const struct cardbus_attach_args *);
+
+const struct atw_cardbus_product {
+	u_int32_t	 acp_vendor;	/* PCI vendor ID */
+	u_int32_t	 acp_product;	/* PCI product ID */
+	const char	*acp_product_name;
+} atw_cardbus_products[] = {
+	{ PCI_VENDOR_ADMTEK,		PCI_PRODUCT_ADMTEK_ADM8211,
+	  "ADMtek ADM8211 802.11 MAC/BBP" },
+
+	{ 0,				0,	NULL },
+};
+
+const struct atw_cardbus_product *
+atw_cardbus_lookup(const struct cardbus_attach_args *ca)
+{
+	const struct atw_cardbus_product *acp;
+
+	for (acp = atw_cardbus_products;
+	     acp->acp_product_name != NULL;
+	     acp++) {
+		if (PCI_VENDOR(ca->ca_id) == acp->acp_vendor &&
+		    PCI_PRODUCT(ca->ca_id) == acp->acp_product)
+			return (acp);
+	}
+	return (NULL);
+}
+
+int
+atw_cardbus_match(struct device *parent, void *match, void *aux)
+{
+	struct cardbus_attach_args *ca = aux;
+
+	if (atw_cardbus_lookup(ca) != NULL)
+		return (1);
+
+	return (0);
+}
+
+void
+atw_cardbus_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct atw_cardbus_softc *csc = (void *)self;
+	struct atw_softc *sc = &csc->sc_atw;
+	struct cardbus_attach_args *ca = aux;
+	cardbus_devfunc_t ct = ca->ca_ct;
+	const struct atw_cardbus_product *acp;
+	bus_addr_t adr;
+	int rev;
+
+	sc->sc_dmat = ca->ca_dmat;
+	csc->sc_ct = ct;
+	csc->sc_tag = ca->ca_tag;
+
+	acp = atw_cardbus_lookup(ca);
+	if (acp == NULL) {
+		printf("\n");
+		panic("atw_cardbus_attach: impossible");
+	}
+
+	/*
+	 * Power management hooks.
+	 */
+	sc->sc_enable = atw_cardbus_enable;
+	sc->sc_disable = atw_cardbus_disable;
+	sc->sc_power = atw_cardbus_power;
+
+	sc->sc_intr_ack = atw_cardbus_intr_ack;
+
+	/* Get revision info. */
+	rev = PCI_REVISION(ca->ca_class);
+
+#if 0
+	printf(": pass %d.%d signature %08x\n%s", (rev >> 4) & 0xf, rev & 0xf,
+	    cardbus_conf_read(ct->ct_cc, ct->ct_cf, csc->sc_tag, 0x80),
+	    sc->sc_dev.dv_xname);
+#endif
+
+	/*
+	 * Map the device.
+	 */
+	csc->sc_csr = CARDBUS_COMMAND_MASTER_ENABLE;
+	if (Cardbus_mapreg_map(ct, ATW_PCI_MMBA,
+	    CARDBUS_MAPREG_TYPE_MEM, 0, &sc->sc_st, &sc->sc_sh, &adr,
+	    &csc->sc_mapsize) == 0) {
+#if 0
+		printf(": atw_cardbus_attach mapped %d bytes mem space\n%s",
+		    csc->sc_mapsize, sc->sc_dev.dv_xname);
+#endif
+#if rbus
+#else
+		(*ct->ct_cf->cardbus_mem_open)(cc, 0, adr, adr+csc->sc_mapsize);
+#endif
+		csc->sc_cben = CARDBUS_MEM_ENABLE;
+		csc->sc_csr |= CARDBUS_COMMAND_MEM_ENABLE;
+		csc->sc_bar_reg = ATW_PCI_MMBA;
+		csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_MEM;
+	} else if (Cardbus_mapreg_map(ct, ATW_PCI_IOBA,
+	    CARDBUS_MAPREG_TYPE_IO, 0, &sc->sc_st, &sc->sc_sh, &adr,
+	    &csc->sc_mapsize) == 0) {
+#if 0
+		printf(": atw_cardbus_attach mapped %d bytes I/O space\n%s",
+		    csc->sc_mapsize, sc->sc_dev.dv_xname);
+#endif
+#if rbus
+#else
+		(*ct->ct_cf->cardbus_io_open)(cc, 0, adr, adr+csc->sc_mapsize);
+#endif
+		csc->sc_cben = CARDBUS_IO_ENABLE;
+		csc->sc_csr |= CARDBUS_COMMAND_IO_ENABLE;
+		csc->sc_bar_reg = ATW_PCI_IOBA;
+		csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_IO;
+	} else {
+		printf(": unable to map device registers\n");
+		return;
+	}
+
+	/*
+	 * Bring the chip out of powersave mode and initialize the
+	 * configuration registers.
+	 */
+	atw_cardbus_setup(csc);
+
+	/* Remember which interrupt line. */
+	csc->sc_intrline = ca->ca_intrline;
+
+	printf(": %s: irq %d\n", acp->acp_product_name, csc->sc_intrline);
+#if 0
+	/*
+	 * The CardBus cards will make it to store-and-forward mode as
+	 * soon as you put them under any kind of load, so just start
+	 * out there.
+	 */
+	sc->sc_txthresh = 3; /* TBD name constant */
+#endif
+
+	/*
+	 * Finish off the attach.
+	 */
+	atw_attach(sc);
+
+	ATW_WRITE(sc, ATW_FER, ATW_FER_INTR);
+
+	/*
+	 * Power down the socket.
+	 */
+	Cardbus_function_disable(csc->sc_ct);
+}
+
+void
+atw_cardbus_intr_ack(struct atw_softc *sc)
+{
+	ATW_WRITE(sc, ATW_FER, ATW_FER_INTR);
+}
+
+int
+atw_cardbus_detach(struct device *self, int flags)
+{
+	struct atw_cardbus_softc *csc = (void *)self;
+	struct atw_softc *sc = &csc->sc_atw;
+	struct cardbus_devfunc *ct = csc->sc_ct;
+	int rv;
+
+#if defined(DIAGNOSTIC)
+	if (ct == NULL)
+		panic("%s: data structure lacks", sc->sc_dev.dv_xname);
+#endif
+
+	rv = atw_detach(sc);
+	if (rv)
+		return (rv);
+
+	/*
+	 * Unhook the interrupt handler.
+	 */
+	if (csc->sc_ih != NULL)
+		cardbus_intr_disestablish(ct->ct_cc, ct->ct_cf, csc->sc_ih);
+
+	/*
+	 * Release bus space and close window.
+	 */
+	if (csc->sc_bar_reg != 0)
+		Cardbus_mapreg_unmap(ct, csc->sc_bar_reg,
+		    sc->sc_st, sc->sc_sh, csc->sc_mapsize);
+
+	return (0);
+}
+
+int
+atw_cardbus_enable(struct atw_softc *sc)
+{
+	struct atw_cardbus_softc *csc = (void *) sc;
+	cardbus_devfunc_t ct = csc->sc_ct;
+	cardbus_chipset_tag_t cc = ct->ct_cc;
+	cardbus_function_tag_t cf = ct->ct_cf;
+
+	/*
+	 * Power on the socket.
+	 */
+	Cardbus_function_enable(ct);
+
+	/*
+	 * Set up the PCI configuration registers.
+	 */
+	atw_cardbus_setup(csc);
+
+	/*
+	 * Map and establish the interrupt.
+	 */
+	csc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline, IPL_NET,
+	    atw_intr, sc);
+	if (csc->sc_ih == NULL) {
+		printf("%s: unable to establish interrupt at %d\n",
+		    sc->sc_dev.dv_xname, csc->sc_intrline);
+		Cardbus_function_disable(csc->sc_ct);
+		return (1);
+	}
+
+	return (0);
+}
+
+void
+atw_cardbus_disable(struct atw_softc *sc)
+{
+	struct atw_cardbus_softc *csc = (void *) sc;
+	cardbus_devfunc_t ct = csc->sc_ct;
+	cardbus_chipset_tag_t cc = ct->ct_cc;
+	cardbus_function_tag_t cf = ct->ct_cf;
+
+	/* Unhook the interrupt handler. */
+	cardbus_intr_disestablish(cc, cf, csc->sc_ih);
+	csc->sc_ih = NULL;
+
+	/* Power down the socket. */
+	Cardbus_function_disable(ct);
+}
+
+void
+atw_cardbus_power(struct atw_softc *sc, int why)
+{
+	struct atw_cardbus_softc *csc = (void *) sc;
+
+	printf("%s: atw_cardbus_power\n", sc->sc_dev.dv_xname);
+
+	if (why == PWR_RESUME) {
+		/*
+		 * Give the PCI configuration registers a kick
+		 * in the head.
+		 */
+#ifdef DIAGNOSTIC
+		if (ATW_IS_ENABLED(sc) == 0)
+			panic("atw_cardbus_power");
+#endif
+		atw_cardbus_setup(csc);
+	}
+}
+
+void
+atw_cardbus_setup(struct atw_cardbus_softc *csc)
+{
+#ifdef notyet
+	struct atw_softc *sc = &csc->sc_atw;
+#endif
+	cardbus_devfunc_t ct = csc->sc_ct;
+	cardbus_chipset_tag_t cc = ct->ct_cc;
+	cardbus_function_tag_t cf = ct->ct_cf;
+	pcireg_t reg;
+
+#ifdef notyet
+	(void)cardbus_setpowerstate(sc->sc_dev.dv_xname, ct, csc->sc_tag,
+	    PCI_PWR_D0);
+#endif
+
+	/* Make sure the right access type is on the CardBus bridge. */
+	(*ct->ct_cf->cardbus_ctrl)(cc, csc->sc_cben);
+	(*ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);
+
+	/* Program the BAR. */
+	cardbus_conf_write(cc, cf, csc->sc_tag, csc->sc_bar_reg,
+	    csc->sc_bar_val);
+
+	/* Enable the appropriate bits in the PCI CSR. */
+	reg = cardbus_conf_read(cc, cf, csc->sc_tag,
+	    CARDBUS_COMMAND_STATUS_REG);
+	reg &= ~(CARDBUS_COMMAND_IO_ENABLE|CARDBUS_COMMAND_MEM_ENABLE);
+	reg |= csc->sc_csr;
+	cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_COMMAND_STATUS_REG,
+	    reg);
+
+	/*
+	 * Make sure the latency timer is set to some reasonable
+	 * value.
+	 */
+	reg = cardbus_conf_read(cc, cf, csc->sc_tag, CARDBUS_BHLC_REG);
+	if (CARDBUS_LATTIMER(reg) < 0x20) {
+		reg &= ~(CARDBUS_LATTIMER_MASK << CARDBUS_LATTIMER_SHIFT);
+		reg |= (0x20 << CARDBUS_LATTIMER_SHIFT);
+		cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_BHLC_REG, reg);
+	}
+}