From de21b57d2eb1034faddaad564aab20b0f5aeb84b Mon Sep 17 00:00:00 2001
From: stsp <stsp@openbsd.org>
Date: Thu, 22 Feb 2024 09:06:11 +0000
Subject: [PATCH] add suspend/resume support to qwx(4)

testing + ok phessler@ deraadt@
---
 sys/dev/ic/qwx.c         | 32 +++++++++++++++++++++++++++++++-
 sys/dev/ic/qwxvar.h      |  3 ++-
 sys/dev/pci/if_qwx_pci.c | 18 ++----------------
 3 files changed, 35 insertions(+), 18 deletions(-)

diff --git a/sys/dev/ic/qwx.c b/sys/dev/ic/qwx.c
index 70c3cad0dd8..68fea8bf88b 100644
--- a/sys/dev/ic/qwx.c
+++ b/sys/dev/ic/qwx.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: qwx.c,v 1.48 2024/02/20 11:48:19 stsp Exp $	*/
+/*	$OpenBSD: qwx.c,v 1.49 2024/02/22 09:06:11 stsp Exp $	*/
 
 /*
  * Copyright 2023 Stefan Sperling <stsp@openbsd.org>
@@ -24762,3 +24762,33 @@ qwx_dmamem_free(bus_dma_tag_t dmat, struct qwx_dmamem *adm)
 	bus_dmamap_destroy(dmat, adm->map);
 	free(adm, M_DEVBUF, sizeof(*adm));
 }
+
+int
+qwx_activate(struct device *self, int act)
+{
+	struct qwx_softc *sc = (struct qwx_softc *)self;
+	struct ifnet *ifp = &sc->sc_ic.ic_if;
+	int err = 0;
+
+	switch (act) {
+	case DVACT_QUIESCE:
+		if (ifp->if_flags & IFF_RUNNING) {
+			rw_enter_write(&sc->ioctl_rwl);
+			qwx_stop(ifp);
+			rw_exit(&sc->ioctl_rwl);
+		}
+		break;
+	case DVACT_RESUME:
+		break;
+	case DVACT_WAKEUP:
+		if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == IFF_UP) {
+			err = qwx_init(ifp);
+			if (err)
+				printf("%s: could not initialize hardware\n",
+				    sc->sc_dev.dv_xname);
+		}
+		break;
+	}
+
+	return 0;
+}
diff --git a/sys/dev/ic/qwxvar.h b/sys/dev/ic/qwxvar.h
index 5aee2a6c551..89ab3c237ed 100644
--- a/sys/dev/ic/qwxvar.h
+++ b/sys/dev/ic/qwxvar.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: qwxvar.h,v 1.20 2024/02/16 14:13:45 stsp Exp $	*/
+/*	$OpenBSD: qwxvar.h,v 1.21 2024/02/22 09:06:11 stsp Exp $	*/
 
 /*
  * Copyright (c) 2018-2019 The Linux Foundation.
@@ -1901,6 +1901,7 @@ int	qwx_dp_service_srng(struct qwx_softc *, int);
 int	qwx_init_hw_params(struct qwx_softc *);
 int	qwx_attach(struct qwx_softc *);
 void	qwx_detach(struct qwx_softc *);
+int	qwx_activate(struct device *, int);
 
 void	qwx_core_deinit(struct qwx_softc *);
 void	qwx_ce_cleanup_pipes(struct qwx_softc *);
diff --git a/sys/dev/pci/if_qwx_pci.c b/sys/dev/pci/if_qwx_pci.c
index 05cab4d0fc2..016b456ca2a 100644
--- a/sys/dev/pci/if_qwx_pci.c
+++ b/sys/dev/pci/if_qwx_pci.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_qwx_pci.c,v 1.10 2024/02/16 16:37:42 stsp Exp $	*/
+/*	$OpenBSD: if_qwx_pci.c,v 1.11 2024/02/22 09:06:11 stsp Exp $	*/
 
 /*
  * Copyright 2023 Stefan Sperling <stsp@openbsd.org>
@@ -402,7 +402,6 @@ int	qwx_pci_match(struct device *, void *, void *);
 void	qwx_pci_attach(struct device *, struct device *, void *);
 int	qwx_pci_detach(struct device *, int);
 void	qwx_pci_attach_hook(struct device *);
-int	qwx_pci_activate(struct device *, int);
 void	qwx_pci_free_xfer_rings(struct qwx_pci_softc *);
 int	qwx_pci_alloc_xfer_ring(struct qwx_softc *, struct qwx_pci_xfer_ring *,
 	    uint32_t, uint32_t, uint32_t, size_t);
@@ -526,7 +525,7 @@ const struct cfattach qwx_pci_ca = {
 	qwx_pci_match,
 	qwx_pci_attach,
 	qwx_pci_detach,
-	qwx_pci_activate
+	qwx_activate
 };
 
 /* XXX pcidev */
@@ -1204,19 +1203,6 @@ qwx_pci_attach_hook(struct device *self)
 	splx(s);
 }
 
-int
-qwx_pci_activate(struct device *self, int act)
-{
-	switch (act) {
-	case DVACT_SUSPEND:
-		break;
-	case DVACT_WAKEUP:
-		break;
-	}
-
-	return 0;
-}
-
 void
 qwx_pci_free_xfer_rings(struct qwx_pci_softc *psc)
 {
-- 
2.20.1