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[src/trunk]: src/sys/dev/pci Reorg the virtio(4) config(9) code to be explici...
details: https://anonhg.NetBSD.org/src/rev/03ddafa04c1f
branches: trunk
changeset: 825854:03ddafa04c1f
user: cherry <cherry%NetBSD.org@localhost>
date: Wed Aug 02 08:39:14 2017 +0000
description:
Reorg the virtio(4) config(9) code to be explicitly pci specific.
We'll later use this for a non-pci virtio(4) usecase.
ok martin
diffstat:
sys/dev/pci/files.pci | 28 +-----
sys/dev/pci/files.virtio | 25 +++++
sys/dev/pci/virtio.c | 165 +-------------------------------------
sys/dev/pci/virtio_pci.c | 201 +++++++++++++++++++++++++++++++++++++++++++++++
sys/dev/pci/virtiovar.h | 7 +-
5 files changed, 242 insertions(+), 184 deletions(-)
diffs (truncated from 514 to 300 lines):
diff -r 559320c2e39c -r 03ddafa04c1f sys/dev/pci/files.pci
--- a/sys/dev/pci/files.pci Wed Aug 02 07:35:47 2017 +0000
+++ b/sys/dev/pci/files.pci Wed Aug 02 08:39:14 2017 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: files.pci,v 1.388 2017/04/13 10:37:36 knakahara Exp $
+# $NetBSD: files.pci,v 1.389 2017/08/02 08:39:14 cherry Exp $
#
# Config file and device description for machine-independent PCI code.
# Included by ports that need it. Requires that the SCSI files be
@@ -1137,29 +1137,11 @@
attach sisfb at pci
file dev/pci/sisfb.c sisfb needs-flag
-# VirtIO
-device virtio {}
-attach virtio at pci
-file dev/pci/virtio.c virtio
-
-attach ld at virtio with ld_virtio
-file dev/pci/ld_virtio.c ld_virtio
-
-device viomb
-attach viomb at virtio
-file dev/pci/viomb.c viomb
+# VirtIO: XXX: move to dev/vmm/virtio
+include "dev/pci/files.virtio"
-device vioif: ether, ifnet, arp
-attach vioif at virtio
-file dev/pci/if_vioif.c vioif
-
-device viornd
-attach viornd at virtio
-file dev/pci/viornd.c viornd
-
-device vioscsi: scsi
-attach vioscsi at virtio
-file dev/pci/vioscsi.c vioscsi
+attach virtio at pci with virtio_pci
+file dev/pci/virtio_pci.c virtio_pci
# Silicon Motion SM712(LynxEM+) frame buffer
device lynxfb: wsemuldisplaydev, rasops16
diff -r 559320c2e39c -r 03ddafa04c1f sys/dev/pci/files.virtio
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/pci/files.virtio Wed Aug 02 08:39:14 2017 +0000
@@ -0,0 +1,25 @@
+# $NetBSD: files.virtio,v 1.1 2017/08/02 08:39:14 cherry Exp $
+
+# VirtIO
+device virtio {}
+file dev/pci/virtio.c virtio
+
+attach ld at virtio with ld_virtio
+file dev/pci/ld_virtio.c ld_virtio
+
+device viomb
+attach viomb at virtio
+file dev/pci/viomb.c viomb
+
+device vioif: ether, ifnet, arp
+attach vioif at virtio
+file dev/pci/if_vioif.c vioif
+
+device viornd
+attach viornd at virtio
+file dev/pci/viornd.c viornd
+
+device vioscsi: scsi
+attach vioscsi at virtio
+file dev/pci/vioscsi.c vioscsi
+
diff -r 559320c2e39c -r 03ddafa04c1f sys/dev/pci/virtio.c
--- a/sys/dev/pci/virtio.c Wed Aug 02 07:35:47 2017 +0000
+++ b/sys/dev/pci/virtio.c Wed Aug 02 08:39:14 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: virtio.c,v 1.28 2017/06/01 02:45:11 chs Exp $ */
+/* $NetBSD: virtio.c,v 1.29 2017/08/02 08:39:14 cherry Exp $ */
/*
* Copyright (c) 2010 Minoura Makoto.
@@ -26,7 +26,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: virtio.c,v 1.28 2017/06/01 02:45:11 chs Exp $");
+__KERNEL_RCSID(0, "$NetBSD: virtio.c,v 1.29 2017/08/02 08:39:14 cherry Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -43,15 +43,11 @@
#define VIRTIO_PRIVATE
-#include <dev/pci/virtioreg.h>
-#include <dev/pci/virtiovar.h>
+#include <dev/pci/virtioreg.h> /* XXX: move to non-pci */
+#include <dev/pci/virtiovar.h> /* XXX: move to non-pci */
#define MINSEG_INDIRECT 2 /* use indirect if nsegs >= this value */
-static int virtio_match(device_t, cfdata_t, void *);
-static void virtio_attach(device_t, device_t, void *);
-static int virtio_rescan(device_t, const char *, const int *);
-static int virtio_detach(device_t, int);
static int virtio_intr(void *arg);
static int virtio_msix_queue_intr(void *);
static int virtio_msix_config_intr(void *);
@@ -66,9 +62,6 @@
static void virtio_init_vq(struct virtio_softc *,
struct virtqueue *, const bool);
-CFATTACH_DECL3_NEW(virtio, sizeof(struct virtio_softc),
- virtio_match, virtio_attach, virtio_detach, NULL, virtio_rescan, NULL,
- DVF_DETACH_SHUTDOWN);
/* we use the legacy virtio spec, so the pci registers are host native
* byte order, not pci (i.e. LE) byte order */
@@ -109,7 +102,7 @@
#define REG_LO_OFF 0
#endif
-static void
+void
virtio_set_status(struct virtio_softc *sc, int status)
{
int old = 0;
@@ -121,42 +114,6 @@
status|old);
}
-#define virtio_device_reset(sc) virtio_set_status((sc), 0)
-
-static int
-virtio_match(device_t parent, cfdata_t match, void *aux)
-{
- struct pci_attach_args *pa;
-
- pa = (struct pci_attach_args *)aux;
- switch (PCI_VENDOR(pa->pa_id)) {
- case PCI_VENDOR_QUMRANET:
- if ((PCI_PRODUCT_QUMRANET_VIRTIO_1000 <=
- PCI_PRODUCT(pa->pa_id)) &&
- (PCI_PRODUCT(pa->pa_id) <=
- PCI_PRODUCT_QUMRANET_VIRTIO_103F))
- return 1;
- break;
- }
-
- return 0;
-}
-
-static const char *virtio_device_name[] = {
- "Unknown (0)", /* 0 */
- "Network", /* 1 */
- "Block", /* 2 */
- "Console", /* 3 */
- "Entropy", /* 4 */
- "Memory Balloon", /* 5 */
- "I/O Memory", /* 6 */
- "Remote Processor Messaging", /* 7 */
- "SCSI", /* 8 */
- "9P Transport", /* 9 */
- "mac80211 wlan", /* 10 */
-};
-#define NDEVNAMES __arraycount(virtio_device_name)
-
#define VIRTIO_MSIX_CONFIG_VECTOR_INDEX 0
#define VIRTIO_MSIX_QUEUE_VECTOR_INDEX 1
@@ -383,119 +340,7 @@
sc->sc_ihs_num = 0;
}
-static void
-virtio_attach(device_t parent, device_t self, void *aux)
-{
- struct virtio_softc *sc = device_private(self);
- struct pci_attach_args *pa = (struct pci_attach_args *)aux;
- pci_chipset_tag_t pc = pa->pa_pc;
- pcitag_t tag = pa->pa_tag;
- int revision;
- pcireg_t id;
- revision = PCI_REVISION(pa->pa_class);
- if (revision != 0) {
- aprint_normal(": unknown revision 0x%02x; giving up\n",
- revision);
- return;
- }
- aprint_normal("\n");
- aprint_naive("\n");
-
- /* subsystem ID shows what I am */
- id = pci_conf_read(pc, tag, PCI_SUBSYS_ID_REG);
- aprint_normal_dev(self, "Virtio %s Device (rev. 0x%02x)\n",
- (PCI_SUBSYS_ID(id) < NDEVNAMES?
- virtio_device_name[PCI_SUBSYS_ID(id)] : "Unknown"),
- revision);
-
- sc->sc_dev = self;
- sc->sc_pc = pc;
- sc->sc_tag = tag;
- sc->sc_iot = pa->pa_iot;
- if (pci_dma64_available(pa))
- sc->sc_dmat = pa->pa_dmat64;
- else
- sc->sc_dmat = pa->pa_dmat;
- sc->sc_config_offset = VIRTIO_CONFIG_DEVICE_CONFIG_NOMSI;
-
- if (pci_mapreg_map(pa, PCI_MAPREG_START, PCI_MAPREG_TYPE_IO, 0,
- &sc->sc_iot, &sc->sc_ioh, NULL, &sc->sc_iosize)) {
- aprint_error_dev(self, "can't map i/o space\n");
- return;
- }
-
- virtio_device_reset(sc);
- virtio_set_status(sc, VIRTIO_CONFIG_DEVICE_STATUS_ACK);
- virtio_set_status(sc, VIRTIO_CONFIG_DEVICE_STATUS_DRIVER);
-
- sc->sc_childdevid = PCI_SUBSYS_ID(id);
- sc->sc_child = NULL;
- sc->sc_pa = *pa;
- virtio_rescan(self, "virtio", 0);
- return;
-}
-
-/* ARGSUSED */
-static int
-virtio_rescan(device_t self, const char *attr, const int *scan_flags)
-{
- struct virtio_softc *sc;
- struct virtio_attach_args va;
-
- sc = device_private(self);
- if (sc->sc_child) /* Child already attached? */
- return 0;
-
- memset(&va, 0, sizeof(va));
- va.sc_childdevid = sc->sc_childdevid;
-
- config_found_ia(self, attr, &va, NULL);
-
- if (sc->sc_child == NULL) {
- aprint_error_dev(self,
- "no matching child driver; not configured\n");
- return 0;
- }
-
- if (sc->sc_child == VIRTIO_CHILD_FAILED) {
- aprint_error_dev(self,
- "virtio configuration failed\n");
- return 0;
- }
-
- /*
- * Make sure child drivers initialize interrupts via call
- * to virtio_child_attach_finish().
- */
- KASSERT(sc->sc_ihs_num != 0);
-
- return 0;
-}
-
-static int
-virtio_detach(device_t self, int flags)
-{
- struct virtio_softc *sc = device_private(self);
- int r;
-
- if (sc->sc_child != NULL) {
- r = config_detach(sc->sc_child, flags);
- if (r)
- return r;
- }
-
- /* Check that child detached properly */
- KASSERT(sc->sc_child == NULL);
- KASSERT(sc->sc_vqs == NULL);
- KASSERT(sc->sc_ihs_num == 0);
-
- if (sc->sc_iosize)
- bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_iosize);
- sc->sc_iosize = 0;
-
- return 0;
-}
/*
* Reset the device.
diff -r 559320c2e39c -r 03ddafa04c1f sys/dev/pci/virtio_pci.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/pci/virtio_pci.c Wed Aug 02 08:39:14 2017 +0000
@@ -0,0 +1,201 @@
+/* $NetBSD: virtio_pci.c,v 1.1 2017/08/02 08:39:14 cherry Exp $ */
+
+/*
+ * Copyright (c) 2010 Minoura Makoto.
+ * All rights reserved.
+ *
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