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, 322 insertions, 0 deletions

diff --git a/sys/dev/pci/if_atw_pci.c b/sys/dev/pci/if_atw_pci.c
new file mode 100644
index 00000000000..5e1c538f679
--- /dev/null
+++ b/sys/dev/pci/if_atw_pci.c
@@ -0,0 +1,322 @@
+/*	$OpenBSD: if_atw_pci.c,v 1.1 2004/06/22 23:55:23 millert Exp $	*/
+/*	$NetBSD: if_atw_pci.c,v 1.6 2004/02/17 21:20:55 dyoung Exp $	*/
+
+/*-
+ * Copyright (c) 1998, 1999, 2000, 2002 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; Charles M. Hannum; and 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.
+ */
+
+/*
+ * PCI bus front-end for the ADMtek ADM8211 802.11 MAC/BBP chip.
+ *
+ * Derived from the ``Tulip'' PCI bus front-end.
+ */
+
+#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>
+
+#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>
+
+/*
+ * 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_pci_softc {
+	struct atw_softc	psc_atw;	/* real ADM8211 softc */
+
+	pci_intr_handle_t	psc_ih;		/* interrupt handle */
+	void			*psc_intrcookie;
+
+	pci_chipset_tag_t	psc_pc;		/* our PCI chipset */
+	pcitag_t		psc_pcitag;	/* our PCI tag */
+};
+
+int	atw_pci_match(struct device *, void *, void *);
+void	atw_pci_attach(struct device *, struct device *, void *);
+
+struct cfattach atw_pci_ca = {
+    sizeof (struct atw_softc), atw_pci_match, atw_pci_attach
+};
+struct cfdriver atw_cd = {
+    0, "atw", DV_IFNET
+};
+
+const struct atw_pci_product {
+	u_int32_t	app_vendor;	/* PCI vendor ID */
+	u_int32_t	app_product;	/* PCI product ID */
+	const char	*app_product_name;
+} atw_pci_products[] = {
+	{ PCI_VENDOR_ADMTEK,		PCI_PRODUCT_ADMTEK_ADM8211,
+	  "ADMtek ADM8211 802.11 MAC/BBP" },
+
+	{ 0,				0,				NULL },
+};
+
+const struct atw_pci_product *atw_pci_lookup(const struct pci_attach_args *);
+
+const struct atw_pci_product *
+atw_pci_lookup(const struct pci_attach_args *pa)
+{
+	const struct atw_pci_product *app;
+
+	for (app = atw_pci_products;
+	     app->app_product_name != NULL;
+	     app++) {
+		if (PCI_VENDOR(pa->pa_id) == app->app_vendor &&
+		    PCI_PRODUCT(pa->pa_id) == app->app_product)
+			return (app);
+	}
+	return (NULL);
+}
+
+int
+atw_pci_match(struct device *parent, void *match, void *aux)
+{
+	struct pci_attach_args *pa = aux;
+
+	if (atw_pci_lookup(pa) != NULL)
+		return (1);
+
+	return (0);
+}
+
+static int
+atw_pci_enable(struct atw_softc *sc)
+{
+	struct atw_pci_softc *psc = (void *)sc;
+
+	/* Establish the interrupt. */
+	psc->psc_intrcookie = pci_intr_establish(psc->psc_pc, psc->psc_ih,
+	    IPL_NET, atw_intr, sc, sc->sc_dev.dv_xname);
+	if (psc->psc_intrcookie == NULL) {
+		printf("%s: unable to establish interrupt\n",
+		    sc->sc_dev.dv_xname);
+		return (1);
+	}
+
+	return (0);
+}
+
+static void
+atw_pci_disable(struct atw_softc *sc)
+{
+	struct atw_pci_softc *psc = (void *)sc;
+
+	/* Unhook the interrupt handler. */
+	pci_intr_disestablish(psc->psc_pc, psc->psc_intrcookie);
+	psc->psc_intrcookie = NULL;
+}
+
+void
+atw_pci_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct atw_pci_softc *psc = (void *) self;
+	struct atw_softc *sc = &psc->psc_atw;
+	struct pci_attach_args *pa = aux;
+	pci_chipset_tag_t pc = pa->pa_pc;
+	const char *intrstr = NULL;
+	bus_space_tag_t iot, memt;
+	bus_space_handle_t ioh, memh;
+	int ioh_valid, memh_valid;
+	const struct atw_pci_product *app;
+	pcireg_t reg;
+	int pmreg, rev;
+
+	psc->psc_pc = pa->pa_pc;
+	psc->psc_pcitag = pa->pa_tag;
+
+	app = atw_pci_lookup(pa);
+	if (app == NULL) {
+		printf("\n");
+		panic("atw_pci_attach: impossible");
+	}
+
+	/*
+	 * No power management hooks.
+	 * XXX Maybe we should add some!
+	 */
+	sc->sc_flags |= ATWF_ENABLED;
+
+	/*
+	 * Get revision info, and set some chip-specific variables.
+	 */
+	rev = PCI_REVISION(pa->pa_class);
+	printf(": %s, pass %d.%d\n", app->app_product_name,
+	    (rev >> 4) & 0xf, rev & 0xf);
+
+	/*
+	 * Check to see if the device is in power-save mode, and
+	 * being it out if necessary.
+	 *
+	 * XXX This code comes almost verbatim from if_tlp_pci.c. I do
+	 * not understand it. Tulip clears the "sleep mode" bit in the
+	 * CFDA register, first.  There is an equivalent (?) register at the
+	 * same place in the ADM8211, but the docs do not assign its bits
+	 * any meanings. -dcy
+	 */
+	if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) {
+		reg = pci_conf_read(pc, pa->pa_tag, pmreg + PCI_PMCSR);
+		switch (reg & PCI_PMCSR_STATE_MASK) {
+		case PCI_PMCSR_STATE_D1:
+		case PCI_PMCSR_STATE_D2:
+			printf(": waking up from power state D%d\n%s",
+			    reg & PCI_PMCSR_STATE_MASK, sc->sc_dev.dv_xname);
+			pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR,
+			    (reg & ~PCI_PMCSR_STATE_MASK) |
+			    PCI_PMCSR_STATE_D0);
+			break;
+		case PCI_PMCSR_STATE_D3:
+			/*
+			 * The card has lost all configuration data in
+			 * this state, so punt.
+			 */
+			printf(": unable to wake up from power state D3, "
+			       "reboot required.\n");
+			pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR,
+			    (reg & ~PCI_PMCSR_STATE_MASK) |
+			    PCI_PMCSR_STATE_D0);
+			return;
+		}
+	}
+
+	/*
+	 * Map the device.
+	 */
+	ioh_valid = (pci_mapreg_map(pa, ATW_PCI_IOBA,
+	    PCI_MAPREG_TYPE_IO, 0,
+	    &iot, &ioh, NULL, NULL, 0) == 0);
+	memh_valid = (pci_mapreg_map(pa, ATW_PCI_MMBA,
+	    PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0,
+	    &memt, &memh, NULL, NULL, 0) == 0);
+
+	if (memh_valid) {
+		sc->sc_st = memt;
+		sc->sc_sh = memh;
+	} else if (ioh_valid) {
+		sc->sc_st = iot;
+		sc->sc_sh = ioh;
+	} else {
+		printf(": unable to map device registers\n");
+		return;
+	}
+
+	sc->sc_dmat = pa->pa_dmat;
+
+	/*
+	 * Make sure bus mastering is enabled.
+	 */
+	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);
+
+	/*
+	 * Get the cacheline size.
+	 */
+	sc->sc_cacheline = PCI_CACHELINE(pci_conf_read(pc, pa->pa_tag,
+	    PCI_BHLC_REG));
+
+	/*
+	 * Get PCI data moving command info.
+	 */
+	if (pa->pa_flags & PCI_FLAGS_MRL_OKAY) /* read line */
+		sc->sc_flags |= ATWF_MRL;
+	if (pa->pa_flags & PCI_FLAGS_MRM_OKAY) /* read multiple */
+		sc->sc_flags |= ATWF_MRM;
+	if (pa->pa_flags & PCI_FLAGS_MWI_OKAY) /* write invalidate */
+		sc->sc_flags |= ATWF_MWI;
+
+	/*
+	 * Map and establish our interrupt.
+	 */
+	if (pci_intr_map(pa, &psc->psc_ih)) {
+		printf("%s: unable to map interrupt\n",
+		    sc->sc_dev.dv_xname);
+		return;
+	}
+	intrstr = pci_intr_string(pc, psc->psc_ih); 
+	psc->psc_intrcookie = pci_intr_establish(pc, psc->psc_ih, IPL_NET,
+	    atw_intr, sc, sc->sc_dev.dv_xname);
+	if (psc->psc_intrcookie == NULL) {
+		printf("%s: unable to establish interrupt",
+		    sc->sc_dev.dv_xname);
+		if (intrstr != NULL)
+			printf(" at %s", intrstr);
+		printf("\n");
+		return;
+	}
+
+	printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
+
+	sc->sc_enable = atw_pci_enable;
+	sc->sc_disable = atw_pci_disable;
+
+	/*
+	 * Finish off the attach.
+	 */
+	atw_attach(sc);
+}