1 files changed, 290 insertions, 0 deletions
diff --git a/sys/dev/ath/if_ath_spectral.c b/sys/dev/ath/if_ath_spectral.c
new file mode 100644
index 000000000000..951d66605981
--- /dev/null
+++ b/sys/dev/ath/if_ath_spectral.c
@@ -0,0 +1,290 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2013 Adrian Chadd <adrian@FreeBSD.org>
+ * All rights reserved.
+ *
+ * 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,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
+ *    redistribution must be conditioned upon including a substantially
+ *    similar Disclaimer requirement for further binary redistribution.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
+ */
+#include <sys/cdefs.h>
+/*
+ * Implement some basic spectral scan control logic.
+ */
+#include "opt_ath.h"
+#include "opt_inet.h"
+#include "opt_wlan.h"
+
+#include <sys/param.h>
+#include <sys/systm.h> 
+#include <sys/sysctl.h>
+#include <sys/kernel.h>
+#include <sys/lock.h>
+#include <sys/malloc.h>
+#include <sys/mutex.h>
+#include <sys/errno.h>
+
+#include <machine/bus.h>
+#include <machine/resource.h>
+#include <sys/bus.h>
+
+#include <sys/socket.h>
+
+#include <net/if.h>
+#include <net/if_var.h>
+#include <net/if_media.h>
+#include <net/if_arp.h>
+#include <net/ethernet.h>		/* XXX for ether_sprintf */
+
+#include <net80211/ieee80211_var.h>
+
+#include <net/bpf.h>
+
+#ifdef INET
+#include <netinet/in.h>
+#include <netinet/if_ether.h>
+#endif
+
+#include <dev/ath/if_athvar.h>
+#include <dev/ath/if_ath_spectral.h>
+#include <dev/ath/if_ath_misc.h>
+
+#include <dev/ath/ath_hal/ah_desc.h>
+
+struct ath_spectral_state {
+	HAL_SPECTRAL_PARAM	spectral_state;
+
+	/*
+	 * Should we enable spectral scan upon
+	 * each network interface reset/change?
+	 *
+	 * This is intended to allow spectral scan
+	 * frame reporting during channel scans.
+	 *
+	 * Later on it can morph into a larger
+	 * scale config method where it pushes
+	 * a "channel scan" config into the hardware
+	 * rather than just the spectral_state
+	 * config.
+	 */
+	int spectral_enable_after_reset;
+};
+
+/*
+ * Methods which are required
+ */
+
+/*
+ * Attach spectral to the given interface
+ */
+int
+ath_spectral_attach(struct ath_softc *sc)
+{
+	struct ath_spectral_state *ss;
+
+	/*
+	 * If spectral isn't supported, don't error - just
+	 * quietly complete.
+	 */
+	if (! ath_hal_spectral_supported(sc->sc_ah))
+		return (0);
+
+	ss = malloc(sizeof(struct ath_spectral_state),
+	    M_TEMP, M_WAITOK | M_ZERO);
+	sc->sc_spectral = ss;
+
+	(void) ath_hal_spectral_get_config(sc->sc_ah, &ss->spectral_state);
+
+	return (0);
+}
+
+/*
+ * Detach spectral from the given interface
+ */
+int
+ath_spectral_detach(struct ath_softc *sc)
+{
+
+	if (! ath_hal_spectral_supported(sc->sc_ah))
+		return (0);
+
+	if (sc->sc_spectral != NULL) {
+		free(sc->sc_spectral, M_TEMP);
+	}
+	return (0);
+}
+
+/*
+ * Check whether spectral needs enabling and if so,
+ * flip it on.
+ */
+int
+ath_spectral_enable(struct ath_softc *sc, struct ieee80211_channel *ch)
+{
+	struct ath_spectral_state *ss = sc->sc_spectral;
+
+	/* Default to disable spectral PHY reporting */
+	sc->sc_dospectral = 0;
+
+	if (ss == NULL)
+		return (0);
+
+	if (ss->spectral_enable_after_reset) {
+		ath_hal_spectral_configure(sc->sc_ah,
+		    &ss->spectral_state);
+		(void) ath_hal_spectral_start(sc->sc_ah);
+		sc->sc_dospectral = 1;
+	}
+	return (0);
+}
+
+/*
+ * Handle ioctl requests from the diagnostic interface.
+ *
+ * The initial part of this code resembles ath_ioctl_diag();
+ * it's likely a good idea to reduce duplication between
+ * these two routines.
+ */
+int
+ath_ioctl_spectral(struct ath_softc *sc, struct ath_diag *ad)
+{
+	unsigned int id = ad->ad_id & ATH_DIAG_ID;
+	void *indata = NULL;
+	void *outdata = NULL;
+	u_int32_t insize = ad->ad_in_size;
+	u_int32_t outsize = ad->ad_out_size;
+	int error = 0;
+	HAL_SPECTRAL_PARAM peout;
+	HAL_SPECTRAL_PARAM *pe;
+	struct ath_spectral_state *ss = sc->sc_spectral;
+	int val;
+
+	if (! ath_hal_spectral_supported(sc->sc_ah))
+		return (EINVAL);
+
+	ATH_LOCK(sc);
+	ath_power_set_power_state(sc, HAL_PM_AWAKE);
+	ATH_UNLOCK(sc);
+
+	if (ad->ad_id & ATH_DIAG_IN) {
+		/*
+		 * Copy in data.
+		 */
+		indata = malloc(insize, M_TEMP, M_NOWAIT);
+		if (indata == NULL) {
+			error = ENOMEM;
+			goto bad;
+		}
+		error = copyin(ad->ad_in_data, indata, insize);
+		if (error)
+			goto bad;
+	}
+	if (ad->ad_id & ATH_DIAG_DYN) {
+		/*
+		 * Allocate a buffer for the results (otherwise the HAL
+		 * returns a pointer to a buffer where we can read the
+		 * results).  Note that we depend on the HAL leaving this
+		 * pointer for us to use below in reclaiming the buffer;
+		 * may want to be more defensive.
+		 */
+		outdata = malloc(outsize, M_TEMP, M_NOWAIT | M_ZERO);
+		if (outdata == NULL) {
+			error = ENOMEM;
+			goto bad;
+		}
+	}
+	switch (id) {
+		case SPECTRAL_CONTROL_GET_PARAMS:
+			memset(&peout, 0, sizeof(peout));
+			outsize = sizeof(HAL_SPECTRAL_PARAM);
+			ath_hal_spectral_get_config(sc->sc_ah, &peout);
+			pe = (HAL_SPECTRAL_PARAM *) outdata;
+			memcpy(pe, &peout, sizeof(*pe));
+			break;
+		case SPECTRAL_CONTROL_SET_PARAMS:
+			if (insize < sizeof(HAL_SPECTRAL_PARAM)) {
+				error = EINVAL;
+				break;
+			}
+			pe = (HAL_SPECTRAL_PARAM *) indata;
+			ath_hal_spectral_configure(sc->sc_ah, pe);
+			/* Save a local copy of the updated parameters */
+			ath_hal_spectral_get_config(sc->sc_ah,
+			    &ss->spectral_state);
+			break;
+		case SPECTRAL_CONTROL_START:
+			ath_hal_spectral_configure(sc->sc_ah,
+			    &ss->spectral_state);
+			(void) ath_hal_spectral_start(sc->sc_ah);
+			sc->sc_dospectral = 1;
+			/* XXX need to update the PHY mask in the driver */
+			break;
+		case SPECTRAL_CONTROL_STOP:
+			(void) ath_hal_spectral_stop(sc->sc_ah);
+			sc->sc_dospectral = 0;
+			/* XXX need to update the PHY mask in the driver */
+			break;
+		case SPECTRAL_CONTROL_ENABLE_AT_RESET:
+			if (insize < sizeof(int)) {
+				device_printf(sc->sc_dev, "%d != %d\n",
+				    insize,
+				    (int) sizeof(int));
+				error = EINVAL;
+				break;
+			}
+			if (indata == NULL) {
+				device_printf(sc->sc_dev, "indata=NULL\n");
+				error = EINVAL;
+				break;
+			}
+			val = * ((int *) indata);
+			if (val == 0)
+				ss->spectral_enable_after_reset = 0;
+			else
+				ss->spectral_enable_after_reset = 1;
+			break;
+		case SPECTRAL_CONTROL_ENABLE:
+			/* XXX TODO */
+		case SPECTRAL_CONTROL_DISABLE:
+			/* XXX TODO */
+		break;
+		default:
+			error = EINVAL;
+			goto bad;
+	}
+	if (outsize < ad->ad_out_size)
+		ad->ad_out_size = outsize;
+	if (outdata && copyout(outdata, ad->ad_out_data, ad->ad_out_size))
+		error = EFAULT;
+bad:
+	if ((ad->ad_id & ATH_DIAG_IN) && indata != NULL)
+		free(indata, M_TEMP);
+	if ((ad->ad_id & ATH_DIAG_DYN) && outdata != NULL)
+		free(outdata, M_TEMP);
+	ATH_LOCK(sc);
+	ath_power_restore_power_state(sc);
+	ATH_UNLOCK(sc);
+
+	return (error);
+}